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/* $Header: /cvsroot/esrg/sfesrg/esrgpcpj/shared/tk_base/tkcanvtext.c,v 1.1.1.1 2001/06/13 04:57:44 dtashley Exp $ */ |
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/* |
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* tkCanvText.c -- |
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* |
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* This file implements text items for canvas widgets. |
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* |
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* Copyright (c) 1991-1994 The Regents of the University of California. |
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* Copyright (c) 1994-1997 Sun Microsystems, Inc. |
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* |
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* See the file "license.terms" for information on usage and redistribution |
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* of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
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* |
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* RCS: @(#) $Id: tkcanvtext.c,v 1.1.1.1 2001/06/13 04:57:44 dtashley Exp $ |
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*/ |
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#include <stdio.h> |
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#include "tkInt.h" |
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#include "tkCanvas.h" |
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#include "tkPort.h" |
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#include "default.h" |
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/* |
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* The structure below defines the record for each text item. |
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*/ |
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typedef struct TextItem { |
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Tk_Item header; /* Generic stuff that's the same for all |
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* types. MUST BE FIRST IN STRUCTURE. */ |
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Tk_CanvasTextInfo *textInfoPtr; |
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/* Pointer to a structure containing |
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* information about the selection and |
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* insertion cursor. The structure is owned |
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* by (and shared with) the generic canvas |
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* code. */ |
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/* |
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* Fields that are set by widget commands other than "configure". |
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*/ |
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double x, y; /* Positioning point for text. */ |
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int insertPos; /* Character index of character just before |
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* which the insertion cursor is displayed. */ |
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/* |
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* Configuration settings that are updated by Tk_ConfigureWidget. |
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*/ |
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Tk_Anchor anchor; /* Where to anchor text relative to (x,y). */ |
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Tk_TSOffset tsoffset; |
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XColor *color; /* Color for text. */ |
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XColor *activeColor; /* Color for text. */ |
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XColor *disabledColor; /* Color for text. */ |
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Tk_Font tkfont; /* Font for drawing text. */ |
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Tk_Justify justify; /* Justification mode for text. */ |
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Pixmap stipple; /* Stipple bitmap for text, or None. */ |
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Pixmap activeStipple; /* Stipple bitmap for text, or None. */ |
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Pixmap disabledStipple; /* Stipple bitmap for text, or None. */ |
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char *text; /* Text for item (malloc-ed). */ |
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int width; /* Width of lines for word-wrap, pixels. |
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* Zero means no word-wrap. */ |
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/* |
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* Fields whose values are derived from the current values of the |
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* configuration settings above. |
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*/ |
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int numChars; /* Length of text in characters. */ |
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int numBytes; /* Length of text in bytes. */ |
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Tk_TextLayout textLayout; /* Cached text layout information. */ |
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int leftEdge; /* Pixel location of the left edge of the |
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* text item; where the left border of the |
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* text layout is drawn. */ |
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int rightEdge; /* Pixel just to right of right edge of |
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* area of text item. Used for selecting up |
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* to end of line. */ |
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GC gc; /* Graphics context for drawing text. */ |
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GC selTextGC; /* Graphics context for selected text. */ |
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GC cursorOffGC; /* If not None, this gives a graphics context |
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* to use to draw the insertion cursor when |
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* it's off. Used if the selection and |
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* insertion cursor colors are the same. */ |
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} TextItem; |
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/* |
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* Information used for parsing configuration specs: |
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*/ |
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static Tk_CustomOption stateOption = { |
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(Tk_OptionParseProc *) TkStateParseProc, |
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TkStatePrintProc, (ClientData) 2 |
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}; |
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static Tk_CustomOption tagsOption = { |
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(Tk_OptionParseProc *) Tk_CanvasTagsParseProc, |
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Tk_CanvasTagsPrintProc, (ClientData) NULL |
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}; |
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static Tk_CustomOption offsetOption = { |
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(Tk_OptionParseProc *) TkOffsetParseProc, |
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TkOffsetPrintProc, (ClientData) (TK_OFFSET_RELATIVE) |
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}; |
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static Tk_ConfigSpec configSpecs[] = { |
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{TK_CONFIG_COLOR, "-activefill", (char *) NULL, (char *) NULL, |
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(char *) NULL, Tk_Offset(TextItem, activeColor), TK_CONFIG_NULL_OK}, |
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{TK_CONFIG_BITMAP, "-activestipple", (char *) NULL, (char *) NULL, |
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(char *) NULL, Tk_Offset(TextItem, activeStipple), TK_CONFIG_NULL_OK}, |
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{TK_CONFIG_ANCHOR, "-anchor", (char *) NULL, (char *) NULL, |
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"center", Tk_Offset(TextItem, anchor), |
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TK_CONFIG_DONT_SET_DEFAULT}, |
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{TK_CONFIG_COLOR, "-disabledfill", (char *) NULL, (char *) NULL, |
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(char *) NULL, Tk_Offset(TextItem, disabledColor), TK_CONFIG_NULL_OK}, |
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{TK_CONFIG_BITMAP, "-disabledstipple", (char *) NULL, (char *) NULL, |
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(char *) NULL, Tk_Offset(TextItem, disabledStipple), TK_CONFIG_NULL_OK}, |
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{TK_CONFIG_COLOR, "-fill", (char *) NULL, (char *) NULL, |
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"black", Tk_Offset(TextItem, color), TK_CONFIG_NULL_OK}, |
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{TK_CONFIG_FONT, "-font", (char *) NULL, (char *) NULL, |
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DEF_CANVTEXT_FONT, Tk_Offset(TextItem, tkfont), 0}, |
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{TK_CONFIG_JUSTIFY, "-justify", (char *) NULL, (char *) NULL, |
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"left", Tk_Offset(TextItem, justify), |
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TK_CONFIG_DONT_SET_DEFAULT}, |
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{TK_CONFIG_CUSTOM, "-offset", (char *) NULL, (char *) NULL, |
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"0,0", Tk_Offset(TextItem, tsoffset), |
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TK_CONFIG_DONT_SET_DEFAULT, &offsetOption}, |
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{TK_CONFIG_CUSTOM, "-state", (char *) NULL, (char *) NULL, |
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(char *) NULL, Tk_Offset(Tk_Item, state), TK_CONFIG_NULL_OK, |
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&stateOption}, |
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{TK_CONFIG_BITMAP, "-stipple", (char *) NULL, (char *) NULL, |
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(char *) NULL, Tk_Offset(TextItem, stipple), TK_CONFIG_NULL_OK}, |
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{TK_CONFIG_CUSTOM, "-tags", (char *) NULL, (char *) NULL, |
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(char *) NULL, 0, TK_CONFIG_NULL_OK, &tagsOption}, |
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{TK_CONFIG_STRING, "-text", (char *) NULL, (char *) NULL, |
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"", Tk_Offset(TextItem, text), 0}, |
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{TK_CONFIG_PIXELS, "-width", (char *) NULL, (char *) NULL, |
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"0", Tk_Offset(TextItem, width), TK_CONFIG_DONT_SET_DEFAULT}, |
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{TK_CONFIG_END, (char *) NULL, (char *) NULL, (char *) NULL, |
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(char *) NULL, 0, 0} |
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}; |
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/* |
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* Prototypes for procedures defined in this file: |
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*/ |
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static void ComputeTextBbox _ANSI_ARGS_((Tk_Canvas canvas, |
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TextItem *textPtr)); |
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static int ConfigureText _ANSI_ARGS_((Tcl_Interp *interp, |
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Tk_Canvas canvas, Tk_Item *itemPtr, int argc, |
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Tcl_Obj *CONST argv[], int flags)); |
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static int CreateText _ANSI_ARGS_((Tcl_Interp *interp, |
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Tk_Canvas canvas, struct Tk_Item *itemPtr, |
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int argc, Tcl_Obj *CONST argv[])); |
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static void DeleteText _ANSI_ARGS_((Tk_Canvas canvas, |
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Tk_Item *itemPtr, Display *display)); |
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static void DisplayCanvText _ANSI_ARGS_((Tk_Canvas canvas, |
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Tk_Item *itemPtr, Display *display, Drawable dst, |
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int x, int y, int width, int height)); |
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static int GetSelText _ANSI_ARGS_((Tk_Canvas canvas, |
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Tk_Item *itemPtr, int offset, char *buffer, |
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int maxBytes)); |
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static int GetTextIndex _ANSI_ARGS_((Tcl_Interp *interp, |
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Tk_Canvas canvas, Tk_Item *itemPtr, |
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Tcl_Obj *obj, int *indexPtr)); |
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static void ScaleText _ANSI_ARGS_((Tk_Canvas canvas, |
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Tk_Item *itemPtr, double originX, double originY, |
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double scaleX, double scaleY)); |
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static void SetTextCursor _ANSI_ARGS_((Tk_Canvas canvas, |
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Tk_Item *itemPtr, int index)); |
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static int TextCoords _ANSI_ARGS_((Tcl_Interp *interp, |
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Tk_Canvas canvas, Tk_Item *itemPtr, |
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int argc, Tcl_Obj *CONST argv[])); |
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static void TextDeleteChars _ANSI_ARGS_((Tk_Canvas canvas, |
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Tk_Item *itemPtr, int first, int last)); |
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static void TextInsert _ANSI_ARGS_((Tk_Canvas canvas, |
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Tk_Item *itemPtr, int beforeThis, char *string)); |
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static int TextToArea _ANSI_ARGS_((Tk_Canvas canvas, |
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Tk_Item *itemPtr, double *rectPtr)); |
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static double TextToPoint _ANSI_ARGS_((Tk_Canvas canvas, |
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Tk_Item *itemPtr, double *pointPtr)); |
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static int TextToPostscript _ANSI_ARGS_((Tcl_Interp *interp, |
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Tk_Canvas canvas, Tk_Item *itemPtr, int prepass)); |
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static void TranslateText _ANSI_ARGS_((Tk_Canvas canvas, |
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Tk_Item *itemPtr, double deltaX, double deltaY)); |
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/* |
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* The structures below defines the rectangle and oval item types |
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* by means of procedures that can be invoked by generic item code. |
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*/ |
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Tk_ItemType tkTextType = { |
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"text", /* name */ |
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sizeof(TextItem), /* itemSize */ |
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CreateText, /* createProc */ |
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configSpecs, /* configSpecs */ |
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ConfigureText, /* configureProc */ |
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TextCoords, /* coordProc */ |
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DeleteText, /* deleteProc */ |
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DisplayCanvText, /* displayProc */ |
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TK_CONFIG_OBJS, /* flags */ |
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TextToPoint, /* pointProc */ |
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TextToArea, /* areaProc */ |
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TextToPostscript, /* postscriptProc */ |
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ScaleText, /* scaleProc */ |
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TranslateText, /* translateProc */ |
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(Tk_ItemIndexProc *) GetTextIndex,/* indexProc */ |
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SetTextCursor, /* icursorProc */ |
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GetSelText, /* selectionProc */ |
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TextInsert, /* insertProc */ |
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TextDeleteChars, /* dTextProc */ |
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(Tk_ItemType *) NULL, /* nextPtr */ |
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}; |
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/* |
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*-------------------------------------------------------------- |
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* |
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* CreateText -- |
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* |
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* This procedure is invoked to create a new text item |
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* in a canvas. |
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* |
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* Results: |
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* A standard Tcl return value. If an error occurred in |
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* creating the item then an error message is left in |
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* the interp's result; in this case itemPtr is left uninitialized |
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* so it can be safely freed by the caller. |
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* |
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* Side effects: |
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* A new text item is created. |
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* |
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*-------------------------------------------------------------- |
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*/ |
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static int |
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CreateText(interp, canvas, itemPtr, argc, argv) |
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Tcl_Interp *interp; /* Interpreter for error reporting. */ |
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Tk_Canvas canvas; /* Canvas to hold new item. */ |
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Tk_Item *itemPtr; /* Record to hold new item; header has been |
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* initialized by caller. */ |
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int argc; /* Number of arguments in argv. */ |
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Tcl_Obj *CONST argv[]; /* Arguments describing rectangle. */ |
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{ |
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TextItem *textPtr = (TextItem *) itemPtr; |
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int i; |
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if (argc==1) { |
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i = 1; |
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} else { |
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char *arg = Tcl_GetStringFromObj(argv[1], NULL); |
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if ((argc>1) && (arg[0] == '-') |
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&& (arg[1] >= 'a') && (arg[1] <= 'z')) { |
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i = 1; |
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} else { |
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i = 2; |
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} |
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} |
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if (argc < i) { |
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Tcl_AppendResult(interp, "wrong # args: should be \"", |
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Tk_PathName(Tk_CanvasTkwin(canvas)), " create ", |
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itemPtr->typePtr->name, " x y ?options?\"", (char *) NULL); |
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return TCL_ERROR; |
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} |
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/* |
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* Carry out initialization that is needed in order to clean up after |
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* errors during the the remainder of this procedure. |
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*/ |
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textPtr->textInfoPtr = Tk_CanvasGetTextInfo(canvas); |
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textPtr->insertPos = 0; |
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textPtr->anchor = TK_ANCHOR_CENTER; |
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textPtr->tsoffset.flags = 0; |
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textPtr->tsoffset.xoffset = 0; |
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textPtr->tsoffset.yoffset = 0; |
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textPtr->color = NULL; |
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textPtr->activeColor = NULL; |
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textPtr->disabledColor = NULL; |
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textPtr->tkfont = NULL; |
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textPtr->justify = TK_JUSTIFY_LEFT; |
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textPtr->stipple = None; |
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textPtr->activeStipple = None; |
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textPtr->disabledStipple = None; |
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textPtr->text = NULL; |
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textPtr->width = 0; |
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textPtr->numChars = 0; |
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textPtr->numBytes = 0; |
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textPtr->textLayout = NULL; |
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textPtr->leftEdge = 0; |
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textPtr->rightEdge = 0; |
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textPtr->gc = None; |
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textPtr->selTextGC = None; |
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textPtr->cursorOffGC = None; |
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/* |
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* Process the arguments to fill in the item record. |
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*/ |
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if ((TextCoords(interp, canvas, itemPtr, i, argv) != TCL_OK)) { |
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goto error; |
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} |
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if (ConfigureText(interp, canvas, itemPtr, argc-i, argv+i, 0) == TCL_OK) { |
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return TCL_OK; |
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} |
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error: |
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DeleteText(canvas, itemPtr, Tk_Display(Tk_CanvasTkwin(canvas))); |
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return TCL_ERROR; |
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} |
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/* |
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*-------------------------------------------------------------- |
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* |
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* TextCoords -- |
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* |
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* This procedure is invoked to process the "coords" widget |
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* command on text items. See the user documentation for |
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* details on what it does. |
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* |
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* Results: |
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* Returns TCL_OK or TCL_ERROR, and sets the interp's result. |
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* |
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* Side effects: |
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* The coordinates for the given item may be changed. |
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* |
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*-------------------------------------------------------------- |
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*/ |
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static int |
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TextCoords(interp, canvas, itemPtr, argc, argv) |
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Tcl_Interp *interp; /* Used for error reporting. */ |
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Tk_Canvas canvas; /* Canvas containing item. */ |
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Tk_Item *itemPtr; /* Item whose coordinates are to be read or |
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* modified. */ |
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int argc; /* Number of coordinates supplied in argv. */ |
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Tcl_Obj *CONST argv[]; /* Array of coordinates: x1, y1, x2, y2, ... */ |
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{ |
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TextItem *textPtr = (TextItem *) itemPtr; |
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if (argc == 0) { |
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Tcl_Obj *obj = Tcl_NewObj(); |
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Tcl_Obj *subobj = Tcl_NewDoubleObj(textPtr->x); |
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Tcl_ListObjAppendElement(interp, obj, subobj); |
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subobj = Tcl_NewDoubleObj(textPtr->y); |
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Tcl_ListObjAppendElement(interp, obj, subobj); |
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Tcl_SetObjResult(interp, obj); |
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} else if (argc < 3) { |
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if (argc==1) { |
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if (Tcl_ListObjGetElements(interp, argv[0], &argc, |
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(Tcl_Obj ***) &argv) != TCL_OK) { |
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return TCL_ERROR; |
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} else if (argc != 2) { |
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char buf[64 + TCL_INTEGER_SPACE]; |
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sprintf(buf, "wrong # coordinates: expected 2, got %d", argc); |
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Tcl_SetResult(interp, buf, TCL_VOLATILE); |
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return TCL_ERROR; |
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} |
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} |
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if ((Tk_CanvasGetCoordFromObj(interp, canvas, argv[0], &textPtr->x) != TCL_OK) |
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|| (Tk_CanvasGetCoordFromObj(interp, canvas, argv[1], |
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&textPtr->y) != TCL_OK)) { |
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return TCL_ERROR; |
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} |
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ComputeTextBbox(canvas, textPtr); |
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} else { |
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char buf[64 + TCL_INTEGER_SPACE]; |
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sprintf(buf, "wrong # coordinates: expected 0 or 2, got %d", argc); |
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Tcl_SetResult(interp, buf, TCL_VOLATILE); |
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return TCL_ERROR; |
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} |
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return TCL_OK; |
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} |
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/* |
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*-------------------------------------------------------------- |
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* |
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* ConfigureText -- |
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* |
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* This procedure is invoked to configure various aspects |
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* of a text item, such as its border and background colors. |
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* |
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* Results: |
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* A standard Tcl result code. If an error occurs, then |
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* an error message is left in the interp's result. |
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* |
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* Side effects: |
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* Configuration information, such as colors and stipple |
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* patterns, may be set for itemPtr. |
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* |
|
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*-------------------------------------------------------------- |
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*/ |
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static int |
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ConfigureText(interp, canvas, itemPtr, argc, argv, flags) |
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Tcl_Interp *interp; /* Interpreter for error reporting. */ |
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Tk_Canvas canvas; /* Canvas containing itemPtr. */ |
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Tk_Item *itemPtr; /* Rectangle item to reconfigure. */ |
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int argc; /* Number of elements in argv. */ |
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Tcl_Obj *CONST argv[]; /* Arguments describing things to configure. */ |
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int flags; /* Flags to pass to Tk_ConfigureWidget. */ |
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{ |
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TextItem *textPtr = (TextItem *) itemPtr; |
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XGCValues gcValues; |
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GC newGC, newSelGC; |
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unsigned long mask; |
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Tk_Window tkwin; |
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Tk_CanvasTextInfo *textInfoPtr = textPtr->textInfoPtr; |
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XColor *selBgColorPtr; |
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XColor *color; |
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Pixmap stipple; |
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Tk_State state; |
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tkwin = Tk_CanvasTkwin(canvas); |
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if (Tk_ConfigureWidget(interp, tkwin, configSpecs, argc, (char **) argv, |
|
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(char *) textPtr, flags|TK_CONFIG_OBJS) != TCL_OK) { |
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return TCL_ERROR; |
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} |
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|
|
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/* |
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|
* A few of the options require additional processing, such as |
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* graphics contexts. |
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|
*/ |
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state = itemPtr->state; |
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if (textPtr->activeColor != NULL || |
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textPtr->activeStipple != None) { |
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itemPtr->redraw_flags |= TK_ITEM_STATE_DEPENDANT; |
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} else { |
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itemPtr->redraw_flags &= ~TK_ITEM_STATE_DEPENDANT; |
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} |
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|
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if(state == TK_STATE_NULL) { |
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state = ((TkCanvas *)canvas)->canvas_state; |
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} |
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color = textPtr->color; |
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stipple = textPtr->stipple; |
|
|
if (((TkCanvas *)canvas)->currentItemPtr == itemPtr) { |
|
|
if (textPtr->activeColor!=NULL) { |
|
|
color = textPtr->activeColor; |
|
|
} |
|
|
if (textPtr->activeStipple!=None) { |
|
|
stipple = textPtr->activeStipple; |
|
|
} |
|
|
} else if (state==TK_STATE_DISABLED) { |
|
|
if (textPtr->disabledColor!=NULL) { |
|
|
color = textPtr->disabledColor; |
|
|
} |
|
|
if (textPtr->disabledStipple!=None) { |
|
|
stipple = textPtr->disabledStipple; |
|
|
} |
|
|
} |
|
|
|
|
|
newGC = newSelGC = None; |
|
|
if (textPtr->tkfont != NULL) { |
|
|
gcValues.font = Tk_FontId(textPtr->tkfont); |
|
|
mask = GCFont; |
|
|
if (color != NULL) { |
|
|
gcValues.foreground = color->pixel; |
|
|
mask |= GCForeground; |
|
|
if (stipple != None) { |
|
|
gcValues.stipple = stipple; |
|
|
gcValues.fill_style = FillStippled; |
|
|
mask |= GCStipple|GCFillStyle; |
|
|
} |
|
|
newGC = Tk_GetGC(tkwin, mask, &gcValues); |
|
|
} |
|
|
mask &= ~(GCTile|GCFillStyle|GCStipple); |
|
|
if (stipple != None) { |
|
|
gcValues.stipple = stipple; |
|
|
gcValues.fill_style = FillStippled; |
|
|
mask |= GCStipple|GCFillStyle; |
|
|
} |
|
|
gcValues.foreground = textInfoPtr->selFgColorPtr->pixel; |
|
|
newSelGC = Tk_GetGC(tkwin, mask|GCForeground, &gcValues); |
|
|
} |
|
|
if (textPtr->gc != None) { |
|
|
Tk_FreeGC(Tk_Display(tkwin), textPtr->gc); |
|
|
} |
|
|
textPtr->gc = newGC; |
|
|
if (textPtr->selTextGC != None) { |
|
|
Tk_FreeGC(Tk_Display(tkwin), textPtr->selTextGC); |
|
|
} |
|
|
textPtr->selTextGC = newSelGC; |
|
|
|
|
|
selBgColorPtr = Tk_3DBorderColor(textInfoPtr->selBorder); |
|
|
if (Tk_3DBorderColor(textInfoPtr->insertBorder)->pixel |
|
|
== selBgColorPtr->pixel) { |
|
|
if (selBgColorPtr->pixel == BlackPixelOfScreen(Tk_Screen(tkwin))) { |
|
|
gcValues.foreground = WhitePixelOfScreen(Tk_Screen(tkwin)); |
|
|
} else { |
|
|
gcValues.foreground = BlackPixelOfScreen(Tk_Screen(tkwin)); |
|
|
} |
|
|
newGC = Tk_GetGC(tkwin, GCForeground, &gcValues); |
|
|
} else { |
|
|
newGC = None; |
|
|
} |
|
|
if (textPtr->cursorOffGC != None) { |
|
|
Tk_FreeGC(Tk_Display(tkwin), textPtr->cursorOffGC); |
|
|
} |
|
|
textPtr->cursorOffGC = newGC; |
|
|
|
|
|
|
|
|
/* |
|
|
* If the text was changed, move the selection and insertion indices |
|
|
* to keep them inside the item. |
|
|
*/ |
|
|
|
|
|
textPtr->numBytes = strlen(textPtr->text); |
|
|
textPtr->numChars = Tcl_NumUtfChars(textPtr->text, textPtr->numBytes); |
|
|
if (textInfoPtr->selItemPtr == itemPtr) { |
|
|
|
|
|
if (textInfoPtr->selectFirst >= textPtr->numChars) { |
|
|
textInfoPtr->selItemPtr = NULL; |
|
|
} else { |
|
|
if (textInfoPtr->selectLast >= textPtr->numChars) { |
|
|
textInfoPtr->selectLast = textPtr->numChars - 1; |
|
|
} |
|
|
if ((textInfoPtr->anchorItemPtr == itemPtr) |
|
|
&& (textInfoPtr->selectAnchor >= textPtr->numChars)) { |
|
|
textInfoPtr->selectAnchor = textPtr->numChars - 1; |
|
|
} |
|
|
} |
|
|
} |
|
|
if (textPtr->insertPos >= textPtr->numChars) { |
|
|
textPtr->insertPos = textPtr->numChars; |
|
|
} |
|
|
|
|
|
ComputeTextBbox(canvas, textPtr); |
|
|
return TCL_OK; |
|
|
} |
|
|
|
|
|
/* |
|
|
*-------------------------------------------------------------- |
|
|
* |
|
|
* DeleteText -- |
|
|
* |
|
|
* This procedure is called to clean up the data structure |
|
|
* associated with a text item. |
|
|
* |
|
|
* Results: |
|
|
* None. |
|
|
* |
|
|
* Side effects: |
|
|
* Resources associated with itemPtr are released. |
|
|
* |
|
|
*-------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
static void |
|
|
DeleteText(canvas, itemPtr, display) |
|
|
Tk_Canvas canvas; /* Info about overall canvas widget. */ |
|
|
Tk_Item *itemPtr; /* Item that is being deleted. */ |
|
|
Display *display; /* Display containing window for canvas. */ |
|
|
{ |
|
|
TextItem *textPtr = (TextItem *) itemPtr; |
|
|
|
|
|
if (textPtr->color != NULL) { |
|
|
Tk_FreeColor(textPtr->color); |
|
|
} |
|
|
if (textPtr->activeColor != NULL) { |
|
|
Tk_FreeColor(textPtr->activeColor); |
|
|
} |
|
|
if (textPtr->disabledColor != NULL) { |
|
|
Tk_FreeColor(textPtr->disabledColor); |
|
|
} |
|
|
Tk_FreeFont(textPtr->tkfont); |
|
|
if (textPtr->stipple != None) { |
|
|
Tk_FreeBitmap(display, textPtr->stipple); |
|
|
} |
|
|
if (textPtr->activeStipple != None) { |
|
|
Tk_FreeBitmap(display, textPtr->activeStipple); |
|
|
} |
|
|
if (textPtr->disabledStipple != None) { |
|
|
Tk_FreeBitmap(display, textPtr->disabledStipple); |
|
|
} |
|
|
if (textPtr->text != NULL) { |
|
|
ckfree(textPtr->text); |
|
|
} |
|
|
|
|
|
Tk_FreeTextLayout(textPtr->textLayout); |
|
|
if (textPtr->gc != None) { |
|
|
Tk_FreeGC(display, textPtr->gc); |
|
|
} |
|
|
if (textPtr->selTextGC != None) { |
|
|
Tk_FreeGC(display, textPtr->selTextGC); |
|
|
} |
|
|
if (textPtr->cursorOffGC != None) { |
|
|
Tk_FreeGC(display, textPtr->cursorOffGC); |
|
|
} |
|
|
} |
|
|
|
|
|
/* |
|
|
*-------------------------------------------------------------- |
|
|
* |
|
|
* ComputeTextBbox -- |
|
|
* |
|
|
* This procedure is invoked to compute the bounding box of |
|
|
* all the pixels that may be drawn as part of a text item. |
|
|
* In addition, it recomputes all of the geometry information |
|
|
* used to display a text item or check for mouse hits. |
|
|
* |
|
|
* Results: |
|
|
* None. |
|
|
* |
|
|
* Side effects: |
|
|
* The fields x1, y1, x2, and y2 are updated in the header |
|
|
* for itemPtr, and the linePtr structure is regenerated |
|
|
* for itemPtr. |
|
|
* |
|
|
*-------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
static void |
|
|
ComputeTextBbox(canvas, textPtr) |
|
|
Tk_Canvas canvas; /* Canvas that contains item. */ |
|
|
TextItem *textPtr; /* Item whose bbox is to be recomputed. */ |
|
|
{ |
|
|
Tk_CanvasTextInfo *textInfoPtr; |
|
|
int leftX, topY, width, height, fudge; |
|
|
Tk_State state = textPtr->header.state; |
|
|
|
|
|
if(state == TK_STATE_NULL) { |
|
|
state = ((TkCanvas *)canvas)->canvas_state; |
|
|
} |
|
|
|
|
|
Tk_FreeTextLayout(textPtr->textLayout); |
|
|
textPtr->textLayout = Tk_ComputeTextLayout(textPtr->tkfont, |
|
|
textPtr->text, textPtr->numChars, textPtr->width, |
|
|
textPtr->justify, 0, &width, &height); |
|
|
|
|
|
if (state == TK_STATE_HIDDEN || textPtr->color == NULL) { |
|
|
width = height = 0; |
|
|
} |
|
|
|
|
|
/* |
|
|
* Use overall geometry information to compute the top-left corner |
|
|
* of the bounding box for the text item. |
|
|
*/ |
|
|
|
|
|
leftX = (int) (textPtr->x + 0.5); |
|
|
topY = (int) (textPtr->y + 0.5); |
|
|
switch (textPtr->anchor) { |
|
|
case TK_ANCHOR_NW: |
|
|
case TK_ANCHOR_N: |
|
|
case TK_ANCHOR_NE: |
|
|
break; |
|
|
|
|
|
case TK_ANCHOR_W: |
|
|
case TK_ANCHOR_CENTER: |
|
|
case TK_ANCHOR_E: |
|
|
topY -= height / 2; |
|
|
break; |
|
|
|
|
|
case TK_ANCHOR_SW: |
|
|
case TK_ANCHOR_S: |
|
|
case TK_ANCHOR_SE: |
|
|
topY -= height; |
|
|
break; |
|
|
} |
|
|
switch (textPtr->anchor) { |
|
|
case TK_ANCHOR_NW: |
|
|
case TK_ANCHOR_W: |
|
|
case TK_ANCHOR_SW: |
|
|
break; |
|
|
|
|
|
case TK_ANCHOR_N: |
|
|
case TK_ANCHOR_CENTER: |
|
|
case TK_ANCHOR_S: |
|
|
leftX -= width / 2; |
|
|
break; |
|
|
|
|
|
case TK_ANCHOR_NE: |
|
|
case TK_ANCHOR_E: |
|
|
case TK_ANCHOR_SE: |
|
|
leftX -= width; |
|
|
break; |
|
|
} |
|
|
|
|
|
textPtr->leftEdge = leftX; |
|
|
textPtr->rightEdge = leftX + width; |
|
|
|
|
|
/* |
|
|
* Last of all, update the bounding box for the item. The item's |
|
|
* bounding box includes the bounding box of all its lines, plus |
|
|
* an extra fudge factor for the cursor border (which could |
|
|
* potentially be quite large). |
|
|
*/ |
|
|
|
|
|
textInfoPtr = textPtr->textInfoPtr; |
|
|
fudge = (textInfoPtr->insertWidth + 1) / 2; |
|
|
if (textInfoPtr->selBorderWidth > fudge) { |
|
|
fudge = textInfoPtr->selBorderWidth; |
|
|
} |
|
|
textPtr->header.x1 = leftX - fudge; |
|
|
textPtr->header.y1 = topY; |
|
|
textPtr->header.x2 = leftX + width + fudge; |
|
|
textPtr->header.y2 = topY + height; |
|
|
} |
|
|
|
|
|
/* |
|
|
*-------------------------------------------------------------- |
|
|
* |
|
|
* DisplayCanvText -- |
|
|
* |
|
|
* This procedure is invoked to draw a text item in a given |
|
|
* drawable. |
|
|
* |
|
|
* Results: |
|
|
* None. |
|
|
* |
|
|
* Side effects: |
|
|
* ItemPtr is drawn in drawable using the transformation |
|
|
* information in canvas. |
|
|
* |
|
|
*-------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
static void |
|
|
DisplayCanvText(canvas, itemPtr, display, drawable, x, y, width, height) |
|
|
Tk_Canvas canvas; /* Canvas that contains item. */ |
|
|
Tk_Item *itemPtr; /* Item to be displayed. */ |
|
|
Display *display; /* Display on which to draw item. */ |
|
|
Drawable drawable; /* Pixmap or window in which to draw item. */ |
|
|
int x, y, width, height; /* Describes region of canvas that must be |
|
|
* redisplayed (not used). */ |
|
|
{ |
|
|
TextItem *textPtr; |
|
|
Tk_CanvasTextInfo *textInfoPtr; |
|
|
int selFirstChar, selLastChar; |
|
|
short drawableX, drawableY; |
|
|
Pixmap stipple; |
|
|
Tk_State state = itemPtr->state; |
|
|
|
|
|
textPtr = (TextItem *) itemPtr; |
|
|
textInfoPtr = textPtr->textInfoPtr; |
|
|
|
|
|
if(state == TK_STATE_NULL) { |
|
|
state = ((TkCanvas *)canvas)->canvas_state; |
|
|
} |
|
|
stipple = textPtr->stipple; |
|
|
if (((TkCanvas *)canvas)->currentItemPtr == itemPtr) { |
|
|
if (textPtr->activeStipple!=None) { |
|
|
stipple = textPtr->activeStipple; |
|
|
} |
|
|
} else if (state==TK_STATE_DISABLED) { |
|
|
if (textPtr->disabledStipple!=None) { |
|
|
stipple = textPtr->disabledStipple; |
|
|
} |
|
|
} |
|
|
|
|
|
if (textPtr->gc == None) { |
|
|
return; |
|
|
} |
|
|
|
|
|
/* |
|
|
* If we're stippling, then modify the stipple offset in the GC. Be |
|
|
* sure to reset the offset when done, since the GC is supposed to be |
|
|
* read-only. |
|
|
*/ |
|
|
|
|
|
if (stipple != None) { |
|
|
Tk_CanvasSetOffset(canvas, textPtr->gc, &textPtr->tsoffset); |
|
|
} |
|
|
|
|
|
selFirstChar = -1; |
|
|
selLastChar = 0; /* lint. */ |
|
|
|
|
|
if (textInfoPtr->selItemPtr == itemPtr) { |
|
|
selFirstChar = textInfoPtr->selectFirst; |
|
|
selLastChar = textInfoPtr->selectLast; |
|
|
if (selLastChar > textPtr->numChars) { |
|
|
selLastChar = textPtr->numChars - 1; |
|
|
} |
|
|
if ((selFirstChar >= 0) && (selFirstChar <= selLastChar)) { |
|
|
int xFirst, yFirst, hFirst; |
|
|
int xLast, yLast; |
|
|
|
|
|
/* |
|
|
* Draw a special background under the selection. |
|
|
*/ |
|
|
|
|
|
Tk_CharBbox(textPtr->textLayout, selFirstChar, &xFirst, &yFirst, |
|
|
NULL, &hFirst); |
|
|
Tk_CharBbox(textPtr->textLayout, selLastChar, &xLast, &yLast, |
|
|
NULL, NULL); |
|
|
|
|
|
/* |
|
|
* If the selection spans the end of this line, then display |
|
|
* selection background all the way to the end of the line. |
|
|
* However, for the last line we only want to display up to the |
|
|
* last character, not the end of the line. |
|
|
*/ |
|
|
|
|
|
x = xFirst; |
|
|
height = hFirst; |
|
|
for (y = yFirst ; y <= yLast; y += height) { |
|
|
if (y == yLast) { |
|
|
width = xLast - x; |
|
|
} else { |
|
|
width = textPtr->rightEdge - textPtr->leftEdge - x; |
|
|
} |
|
|
Tk_CanvasDrawableCoords(canvas, |
|
|
(double) (textPtr->leftEdge + x |
|
|
- textInfoPtr->selBorderWidth), |
|
|
(double) (textPtr->header.y1 + y), |
|
|
&drawableX, &drawableY); |
|
|
Tk_Fill3DRectangle(Tk_CanvasTkwin(canvas), drawable, |
|
|
textInfoPtr->selBorder, drawableX, drawableY, |
|
|
width + 2 * textInfoPtr->selBorderWidth, |
|
|
height, textInfoPtr->selBorderWidth, TK_RELIEF_RAISED); |
|
|
x = 0; |
|
|
} |
|
|
} |
|
|
} |
|
|
|
|
|
/* |
|
|
* If the insertion point should be displayed, then draw a special |
|
|
* background for the cursor before drawing the text. Note: if |
|
|
* we're the cursor item but the cursor is turned off, then redraw |
|
|
* background over the area of the cursor. This guarantees that |
|
|
* the selection won't make the cursor invisible on mono displays, |
|
|
* where both are drawn in the same color. |
|
|
*/ |
|
|
|
|
|
if ((textInfoPtr->focusItemPtr == itemPtr) && (textInfoPtr->gotFocus)) { |
|
|
if (Tk_CharBbox(textPtr->textLayout, textPtr->insertPos, |
|
|
&x, &y, NULL, &height)) { |
|
|
Tk_CanvasDrawableCoords(canvas, |
|
|
(double) (textPtr->leftEdge + x |
|
|
- (textInfoPtr->insertWidth / 2)), |
|
|
(double) (textPtr->header.y1 + y), |
|
|
&drawableX, &drawableY); |
|
|
if (textInfoPtr->cursorOn) { |
|
|
Tk_Fill3DRectangle(Tk_CanvasTkwin(canvas), drawable, |
|
|
textInfoPtr->insertBorder, |
|
|
drawableX, drawableY, |
|
|
textInfoPtr->insertWidth, height, |
|
|
textInfoPtr->insertBorderWidth, TK_RELIEF_RAISED); |
|
|
} else if (textPtr->cursorOffGC != None) { |
|
|
/* |
|
|
* Redraw the background over the area of the cursor, |
|
|
* even though the cursor is turned off. This |
|
|
* guarantees that the selection won't make the cursor |
|
|
* invisible on mono displays, where both may be drawn |
|
|
* in the same color. |
|
|
*/ |
|
|
|
|
|
XFillRectangle(display, drawable, textPtr->cursorOffGC, |
|
|
drawableX, drawableY, |
|
|
(unsigned) textInfoPtr->insertWidth, |
|
|
(unsigned) height); |
|
|
} |
|
|
} |
|
|
} |
|
|
|
|
|
|
|
|
/* |
|
|
* Display the text in two pieces: draw the entire text item, then |
|
|
* draw the selected text on top of it. The selected text then |
|
|
* will only need to be drawn if it has different attributes (such |
|
|
* as foreground color) than regular text. |
|
|
*/ |
|
|
|
|
|
Tk_CanvasDrawableCoords(canvas, (double) textPtr->leftEdge, |
|
|
(double) textPtr->header.y1, &drawableX, &drawableY); |
|
|
Tk_DrawTextLayout(display, drawable, textPtr->gc, textPtr->textLayout, |
|
|
drawableX, drawableY, 0, -1); |
|
|
|
|
|
if ((selFirstChar >= 0) && (textPtr->selTextGC != textPtr->gc)) { |
|
|
Tk_DrawTextLayout(display, drawable, textPtr->selTextGC, |
|
|
textPtr->textLayout, drawableX, drawableY, selFirstChar, |
|
|
selLastChar + 1); |
|
|
} |
|
|
|
|
|
if (stipple != None) { |
|
|
XSetTSOrigin(display, textPtr->gc, 0, 0); |
|
|
} |
|
|
} |
|
|
|
|
|
/* |
|
|
*-------------------------------------------------------------- |
|
|
* |
|
|
* TextInsert -- |
|
|
* |
|
|
* Insert characters into a text item at a given position. |
|
|
* |
|
|
* Results: |
|
|
* None. |
|
|
* |
|
|
* Side effects: |
|
|
* The text in the given item is modified. The cursor and |
|
|
* selection positions are also modified to reflect the |
|
|
* insertion. |
|
|
* |
|
|
*-------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
static void |
|
|
TextInsert(canvas, itemPtr, index, string) |
|
|
Tk_Canvas canvas; /* Canvas containing text item. */ |
|
|
Tk_Item *itemPtr; /* Text item to be modified. */ |
|
|
int index; /* Character index before which string is |
|
|
* to be inserted. */ |
|
|
char *string; /* New characters to be inserted. */ |
|
|
{ |
|
|
TextItem *textPtr = (TextItem *) itemPtr; |
|
|
int byteIndex, byteCount, charsAdded; |
|
|
char *new, *text; |
|
|
Tk_CanvasTextInfo *textInfoPtr = textPtr->textInfoPtr; |
|
|
|
|
|
string = Tcl_GetStringFromObj((Tcl_Obj *) string, &byteCount); |
|
|
|
|
|
text = textPtr->text; |
|
|
|
|
|
if (index < 0) { |
|
|
index = 0; |
|
|
} |
|
|
if (index > textPtr->numChars) { |
|
|
index = textPtr->numChars; |
|
|
} |
|
|
byteIndex = Tcl_UtfAtIndex(text, index) - text; |
|
|
byteCount = strlen(string); |
|
|
if (byteCount == 0) { |
|
|
return; |
|
|
} |
|
|
|
|
|
new = (char *) ckalloc((unsigned) textPtr->numBytes + byteCount + 1); |
|
|
memcpy(new, text, (size_t) byteIndex); |
|
|
strcpy(new + byteIndex, string); |
|
|
strcpy(new + byteIndex + byteCount, text + byteIndex); |
|
|
|
|
|
ckfree(text); |
|
|
textPtr->text = new; |
|
|
charsAdded = Tcl_NumUtfChars(string, byteCount); |
|
|
textPtr->numChars += charsAdded; |
|
|
textPtr->numBytes += byteCount; |
|
|
|
|
|
/* |
|
|
* Inserting characters invalidates indices such as those for the |
|
|
* selection and cursor. Update the indices appropriately. |
|
|
*/ |
|
|
|
|
|
if (textInfoPtr->selItemPtr == itemPtr) { |
|
|
if (textInfoPtr->selectFirst >= index) { |
|
|
textInfoPtr->selectFirst += charsAdded; |
|
|
} |
|
|
if (textInfoPtr->selectLast >= index) { |
|
|
textInfoPtr->selectLast += charsAdded; |
|
|
} |
|
|
if ((textInfoPtr->anchorItemPtr == itemPtr) |
|
|
&& (textInfoPtr->selectAnchor >= index)) { |
|
|
textInfoPtr->selectAnchor += charsAdded; |
|
|
} |
|
|
} |
|
|
if (textPtr->insertPos >= index) { |
|
|
textPtr->insertPos += charsAdded; |
|
|
} |
|
|
ComputeTextBbox(canvas, textPtr); |
|
|
} |
|
|
|
|
|
/* |
|
|
*-------------------------------------------------------------- |
|
|
* |
|
|
* TextDeleteChars -- |
|
|
* |
|
|
* Delete one or more characters from a text item. |
|
|
* |
|
|
* Results: |
|
|
* None. |
|
|
* |
|
|
* Side effects: |
|
|
* Characters between "first" and "last", inclusive, get |
|
|
* deleted from itemPtr, and things like the selection |
|
|
* position get updated. |
|
|
* |
|
|
*-------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
static void |
|
|
TextDeleteChars(canvas, itemPtr, first, last) |
|
|
Tk_Canvas canvas; /* Canvas containing itemPtr. */ |
|
|
Tk_Item *itemPtr; /* Item in which to delete characters. */ |
|
|
int first; /* Character index of first character to |
|
|
* delete. */ |
|
|
int last; /* Character index of last character to |
|
|
* delete (inclusive). */ |
|
|
{ |
|
|
TextItem *textPtr = (TextItem *) itemPtr; |
|
|
int byteIndex, byteCount, charsRemoved; |
|
|
char *new, *text; |
|
|
Tk_CanvasTextInfo *textInfoPtr = textPtr->textInfoPtr; |
|
|
|
|
|
text = textPtr->text; |
|
|
if (first < 0) { |
|
|
first = 0; |
|
|
} |
|
|
if (last >= textPtr->numChars) { |
|
|
last = textPtr->numChars - 1; |
|
|
} |
|
|
if (first > last) { |
|
|
return; |
|
|
} |
|
|
charsRemoved = last + 1 - first; |
|
|
|
|
|
byteIndex = Tcl_UtfAtIndex(text, first) - text; |
|
|
byteCount = Tcl_UtfAtIndex(text + byteIndex, charsRemoved) |
|
|
- (text + byteIndex); |
|
|
|
|
|
new = (char *) ckalloc((unsigned) (textPtr->numBytes + 1 - byteCount)); |
|
|
memcpy(new, text, (size_t) byteIndex); |
|
|
strcpy(new + byteIndex, text + byteIndex + byteCount); |
|
|
|
|
|
ckfree(text); |
|
|
textPtr->text = new; |
|
|
textPtr->numChars -= charsRemoved; |
|
|
textPtr->numBytes -= byteCount; |
|
|
|
|
|
/* |
|
|
* Update indexes for the selection and cursor to reflect the |
|
|
* renumbering of the remaining characters. |
|
|
*/ |
|
|
|
|
|
if (textInfoPtr->selItemPtr == itemPtr) { |
|
|
if (textInfoPtr->selectFirst > first) { |
|
|
textInfoPtr->selectFirst -= charsRemoved; |
|
|
if (textInfoPtr->selectFirst < first) { |
|
|
textInfoPtr->selectFirst = first; |
|
|
} |
|
|
} |
|
|
if (textInfoPtr->selectLast >= first) { |
|
|
textInfoPtr->selectLast -= charsRemoved; |
|
|
if (textInfoPtr->selectLast < first - 1) { |
|
|
textInfoPtr->selectLast = first - 1; |
|
|
} |
|
|
} |
|
|
if (textInfoPtr->selectFirst > textInfoPtr->selectLast) { |
|
|
textInfoPtr->selItemPtr = NULL; |
|
|
} |
|
|
if ((textInfoPtr->anchorItemPtr == itemPtr) |
|
|
&& (textInfoPtr->selectAnchor > first)) { |
|
|
textInfoPtr->selectAnchor -= charsRemoved; |
|
|
if (textInfoPtr->selectAnchor < first) { |
|
|
textInfoPtr->selectAnchor = first; |
|
|
} |
|
|
} |
|
|
} |
|
|
if (textPtr->insertPos > first) { |
|
|
textPtr->insertPos -= charsRemoved; |
|
|
if (textPtr->insertPos < first) { |
|
|
textPtr->insertPos = first; |
|
|
} |
|
|
} |
|
|
ComputeTextBbox(canvas, textPtr); |
|
|
return; |
|
|
} |
|
|
|
|
|
/* |
|
|
*-------------------------------------------------------------- |
|
|
* |
|
|
* TextToPoint -- |
|
|
* |
|
|
* Computes the distance from a given point to a given |
|
|
* text item, in canvas units. |
|
|
* |
|
|
* Results: |
|
|
* The return value is 0 if the point whose x and y coordinates |
|
|
* are pointPtr[0] and pointPtr[1] is inside the text item. If |
|
|
* the point isn't inside the text item then the return value |
|
|
* is the distance from the point to the text item. |
|
|
* |
|
|
* Side effects: |
|
|
* None. |
|
|
* |
|
|
*-------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
static double |
|
|
TextToPoint(canvas, itemPtr, pointPtr) |
|
|
Tk_Canvas canvas; /* Canvas containing itemPtr. */ |
|
|
Tk_Item *itemPtr; /* Item to check against point. */ |
|
|
double *pointPtr; /* Pointer to x and y coordinates. */ |
|
|
{ |
|
|
TextItem *textPtr; |
|
|
Tk_State state = itemPtr->state; |
|
|
double value; |
|
|
|
|
|
if (state == TK_STATE_NULL) { |
|
|
state = ((TkCanvas *)canvas)->canvas_state; |
|
|
} |
|
|
textPtr = (TextItem *) itemPtr; |
|
|
value = (double) Tk_DistanceToTextLayout(textPtr->textLayout, |
|
|
(int) pointPtr[0] - textPtr->leftEdge, |
|
|
(int) pointPtr[1] - textPtr->header.y1); |
|
|
|
|
|
if ((state == TK_STATE_HIDDEN) || (textPtr->color == NULL) || |
|
|
(textPtr->text == NULL) || (*textPtr->text == 0)) { |
|
|
value = 1.0e36; |
|
|
} |
|
|
return value; |
|
|
} |
|
|
|
|
|
/* |
|
|
*-------------------------------------------------------------- |
|
|
* |
|
|
* TextToArea -- |
|
|
* |
|
|
* This procedure is called to determine whether an item |
|
|
* lies entirely inside, entirely outside, or overlapping |
|
|
* a given rectangle. |
|
|
* |
|
|
* Results: |
|
|
* -1 is returned if the item is entirely outside the area |
|
|
* given by rectPtr, 0 if it overlaps, and 1 if it is entirely |
|
|
* inside the given area. |
|
|
* |
|
|
* Side effects: |
|
|
* None. |
|
|
* |
|
|
*-------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
static int |
|
|
TextToArea(canvas, itemPtr, rectPtr) |
|
|
Tk_Canvas canvas; /* Canvas containing itemPtr. */ |
|
|
Tk_Item *itemPtr; /* Item to check against rectangle. */ |
|
|
double *rectPtr; /* Pointer to array of four coordinates |
|
|
* (x1, y1, x2, y2) describing rectangular |
|
|
* area. */ |
|
|
{ |
|
|
TextItem *textPtr; |
|
|
Tk_State state = itemPtr->state; |
|
|
|
|
|
if (state == TK_STATE_NULL) { |
|
|
state = ((TkCanvas *)canvas)->canvas_state; |
|
|
} |
|
|
|
|
|
textPtr = (TextItem *) itemPtr; |
|
|
return Tk_IntersectTextLayout(textPtr->textLayout, |
|
|
(int) (rectPtr[0] + 0.5) - textPtr->leftEdge, |
|
|
(int) (rectPtr[1] + 0.5) - textPtr->header.y1, |
|
|
(int) (rectPtr[2] - rectPtr[0] + 0.5), |
|
|
(int) (rectPtr[3] - rectPtr[1] + 0.5)); |
|
|
} |
|
|
|
|
|
/* |
|
|
*-------------------------------------------------------------- |
|
|
* |
|
|
* ScaleText -- |
|
|
* |
|
|
* This procedure is invoked to rescale a text item. |
|
|
* |
|
|
* Results: |
|
|
* None. |
|
|
* |
|
|
* Side effects: |
|
|
* Scales the position of the text, but not the size |
|
|
* of the font for the text. |
|
|
* |
|
|
*-------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
/* ARGSUSED */ |
|
|
static void |
|
|
ScaleText(canvas, itemPtr, originX, originY, scaleX, scaleY) |
|
|
Tk_Canvas canvas; /* Canvas containing rectangle. */ |
|
|
Tk_Item *itemPtr; /* Rectangle to be scaled. */ |
|
|
double originX, originY; /* Origin about which to scale rect. */ |
|
|
double scaleX; /* Amount to scale in X direction. */ |
|
|
double scaleY; /* Amount to scale in Y direction. */ |
|
|
{ |
|
|
TextItem *textPtr = (TextItem *) itemPtr; |
|
|
|
|
|
textPtr->x = originX + scaleX*(textPtr->x - originX); |
|
|
textPtr->y = originY + scaleY*(textPtr->y - originY); |
|
|
ComputeTextBbox(canvas, textPtr); |
|
|
return; |
|
|
} |
|
|
|
|
|
/* |
|
|
*-------------------------------------------------------------- |
|
|
* |
|
|
* TranslateText -- |
|
|
* |
|
|
* This procedure is called to move a text item by a |
|
|
* given amount. |
|
|
* |
|
|
* Results: |
|
|
* None. |
|
|
* |
|
|
* Side effects: |
|
|
* The position of the text item is offset by (xDelta, yDelta), |
|
|
* and the bounding box is updated in the generic part of the |
|
|
* item structure. |
|
|
* |
|
|
*-------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
static void |
|
|
TranslateText(canvas, itemPtr, deltaX, deltaY) |
|
|
Tk_Canvas canvas; /* Canvas containing item. */ |
|
|
Tk_Item *itemPtr; /* Item that is being moved. */ |
|
|
double deltaX, deltaY; /* Amount by which item is to be moved. */ |
|
|
{ |
|
|
TextItem *textPtr = (TextItem *) itemPtr; |
|
|
|
|
|
textPtr->x += deltaX; |
|
|
textPtr->y += deltaY; |
|
|
ComputeTextBbox(canvas, textPtr); |
|
|
} |
|
|
|
|
|
/* |
|
|
*-------------------------------------------------------------- |
|
|
* |
|
|
* GetTextIndex -- |
|
|
* |
|
|
* Parse an index into a text item and return either its value |
|
|
* or an error. |
|
|
* |
|
|
* Results: |
|
|
* A standard Tcl result. If all went well, then *indexPtr is |
|
|
* filled in with the index (into itemPtr) corresponding to |
|
|
* string. Otherwise an error message is left in |
|
|
* the interp's result. |
|
|
* |
|
|
* Side effects: |
|
|
* None. |
|
|
* |
|
|
*-------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
static int |
|
|
GetTextIndex(interp, canvas, itemPtr, obj, indexPtr) |
|
|
Tcl_Interp *interp; /* Used for error reporting. */ |
|
|
Tk_Canvas canvas; /* Canvas containing item. */ |
|
|
Tk_Item *itemPtr; /* Item for which the index is being |
|
|
* specified. */ |
|
|
Tcl_Obj *obj; /* Specification of a particular character |
|
|
* in itemPtr's text. */ |
|
|
int *indexPtr; /* Where to store converted character |
|
|
* index. */ |
|
|
{ |
|
|
TextItem *textPtr = (TextItem *) itemPtr; |
|
|
size_t length; |
|
|
int c; |
|
|
TkCanvas *canvasPtr = (TkCanvas *) canvas; |
|
|
Tk_CanvasTextInfo *textInfoPtr = textPtr->textInfoPtr; |
|
|
char *string = Tcl_GetStringFromObj(obj, (int *) &length); |
|
|
|
|
|
c = string[0]; |
|
|
length = strlen(string); |
|
|
|
|
|
if ((c == 'e') && (strncmp(string, "end", length) == 0)) { |
|
|
*indexPtr = textPtr->numChars; |
|
|
} else if ((c == 'i') && (strncmp(string, "insert", length) == 0)) { |
|
|
*indexPtr = textPtr->insertPos; |
|
|
} else if ((c == 's') && (strncmp(string, "sel.first", length) == 0) |
|
|
&& (length >= 5)) { |
|
|
if (textInfoPtr->selItemPtr != itemPtr) { |
|
|
Tcl_SetResult(interp, "selection isn't in item", TCL_STATIC); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
*indexPtr = textInfoPtr->selectFirst; |
|
|
} else if ((c == 's') && (strncmp(string, "sel.last", length) == 0) |
|
|
&& (length >= 5)) { |
|
|
if (textInfoPtr->selItemPtr != itemPtr) { |
|
|
Tcl_SetResult(interp, "selection isn't in item", TCL_STATIC); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
*indexPtr = textInfoPtr->selectLast; |
|
|
} else if (c == '@') { |
|
|
int x, y; |
|
|
double tmp; |
|
|
char *end, *p; |
|
|
|
|
|
p = string+1; |
|
|
tmp = strtod(p, &end); |
|
|
if ((end == p) || (*end != ',')) { |
|
|
goto badIndex; |
|
|
} |
|
|
x = (int) ((tmp < 0) ? tmp - 0.5 : tmp + 0.5); |
|
|
p = end+1; |
|
|
tmp = strtod(p, &end); |
|
|
if ((end == p) || (*end != 0)) { |
|
|
goto badIndex; |
|
|
} |
|
|
y = (int) ((tmp < 0) ? tmp - 0.5 : tmp + 0.5); |
|
|
*indexPtr = Tk_PointToChar(textPtr->textLayout, |
|
|
x + canvasPtr->scrollX1 - textPtr->leftEdge, |
|
|
y + canvasPtr->scrollY1 - textPtr->header.y1); |
|
|
} else if (Tcl_GetIntFromObj((Tcl_Interp *)NULL, obj, indexPtr) == TCL_OK) { |
|
|
if (*indexPtr < 0){ |
|
|
*indexPtr = 0; |
|
|
} else if (*indexPtr > textPtr->numChars) { |
|
|
*indexPtr = textPtr->numChars; |
|
|
} |
|
|
} else { |
|
|
/* |
|
|
* Some of the paths here leave messages in the interp's result, |
|
|
* so we have to clear it out before storing our own message. |
|
|
*/ |
|
|
|
|
|
badIndex: |
|
|
Tcl_SetResult(interp, (char *) NULL, TCL_STATIC); |
|
|
Tcl_AppendResult(interp, "bad index \"", string, "\"", |
|
|
(char *) NULL); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
return TCL_OK; |
|
|
} |
|
|
|
|
|
/* |
|
|
*-------------------------------------------------------------- |
|
|
* |
|
|
* SetTextCursor -- |
|
|
* |
|
|
* Set the position of the insertion cursor in this item. |
|
|
* |
|
|
* Results: |
|
|
* None. |
|
|
* |
|
|
* Side effects: |
|
|
* The cursor position will change. |
|
|
* |
|
|
*-------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
/* ARGSUSED */ |
|
|
static void |
|
|
SetTextCursor(canvas, itemPtr, index) |
|
|
Tk_Canvas canvas; /* Record describing canvas widget. */ |
|
|
Tk_Item *itemPtr; /* Text item in which cursor position is to |
|
|
* be set. */ |
|
|
int index; /* Character index of character just before |
|
|
* which cursor is to be positioned. */ |
|
|
{ |
|
|
TextItem *textPtr = (TextItem *) itemPtr; |
|
|
|
|
|
if (index < 0) { |
|
|
textPtr->insertPos = 0; |
|
|
} else if (index > textPtr->numChars) { |
|
|
textPtr->insertPos = textPtr->numChars; |
|
|
} else { |
|
|
textPtr->insertPos = index; |
|
|
} |
|
|
} |
|
|
|
|
|
/* |
|
|
*-------------------------------------------------------------- |
|
|
* |
|
|
* GetSelText -- |
|
|
* |
|
|
* This procedure is invoked to return the selected portion |
|
|
* of a text item. It is only called when this item has |
|
|
* the selection. |
|
|
* |
|
|
* Results: |
|
|
* The return value is the number of non-NULL bytes stored |
|
|
* at buffer. Buffer is filled (or partially filled) with a |
|
|
* NULL-terminated string containing part or all of the selection, |
|
|
* as given by offset and maxBytes. |
|
|
* |
|
|
* Side effects: |
|
|
* None. |
|
|
* |
|
|
*-------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
static int |
|
|
GetSelText(canvas, itemPtr, offset, buffer, maxBytes) |
|
|
Tk_Canvas canvas; /* Canvas containing selection. */ |
|
|
Tk_Item *itemPtr; /* Text item containing selection. */ |
|
|
int offset; /* Byte offset within selection of first |
|
|
* character to be returned. */ |
|
|
char *buffer; /* Location in which to place selection. */ |
|
|
int maxBytes; /* Maximum number of bytes to place at |
|
|
* buffer, not including terminating NULL |
|
|
* character. */ |
|
|
{ |
|
|
TextItem *textPtr = (TextItem *) itemPtr; |
|
|
int byteCount; |
|
|
char *text, *selStart, *selEnd; |
|
|
Tk_CanvasTextInfo *textInfoPtr = textPtr->textInfoPtr; |
|
|
|
|
|
if ((textInfoPtr->selectFirst < 0) || |
|
|
(textInfoPtr->selectFirst > textInfoPtr->selectLast)) { |
|
|
return 0; |
|
|
} |
|
|
text = textPtr->text; |
|
|
selStart = Tcl_UtfAtIndex(text, textInfoPtr->selectFirst); |
|
|
selEnd = Tcl_UtfAtIndex(selStart, |
|
|
textInfoPtr->selectLast + 1 - textInfoPtr->selectFirst); |
|
|
byteCount = selEnd - selStart - offset; |
|
|
if (byteCount > maxBytes) { |
|
|
byteCount = maxBytes; |
|
|
} |
|
|
if (byteCount <= 0) { |
|
|
return 0; |
|
|
} |
|
|
memcpy(buffer, selStart + offset, (size_t) byteCount); |
|
|
buffer[byteCount] = '\0'; |
|
|
return byteCount; |
|
|
} |
|
|
|
|
|
/* |
|
|
*-------------------------------------------------------------- |
|
|
* |
|
|
* TextToPostscript -- |
|
|
* |
|
|
* This procedure is called to generate Postscript for |
|
|
* text items. |
|
|
* |
|
|
* Results: |
|
|
* The return value is a standard Tcl result. If an error |
|
|
* occurs in generating Postscript then an error message is |
|
|
* left in the interp's result, replacing whatever used |
|
|
* to be there. If no error occurs, then Postscript for the |
|
|
* item is appended to the result. |
|
|
* |
|
|
* Side effects: |
|
|
* None. |
|
|
* |
|
|
*-------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
static int |
|
|
TextToPostscript(interp, canvas, itemPtr, prepass) |
|
|
Tcl_Interp *interp; /* Leave Postscript or error message here. */ |
|
|
Tk_Canvas canvas; /* Information about overall canvas. */ |
|
|
Tk_Item *itemPtr; /* Item for which Postscript is wanted. */ |
|
|
int prepass; /* 1 means this is a prepass to collect |
|
|
* font information; 0 means final Postscript |
|
|
* is being created. */ |
|
|
{ |
|
|
TextItem *textPtr = (TextItem *) itemPtr; |
|
|
int x, y; |
|
|
Tk_FontMetrics fm; |
|
|
char *justify; |
|
|
char buffer[500]; |
|
|
XColor *color; |
|
|
Pixmap stipple; |
|
|
Tk_State state = itemPtr->state; |
|
|
|
|
|
if(state == TK_STATE_NULL) { |
|
|
state = ((TkCanvas *)canvas)->canvas_state; |
|
|
} |
|
|
color = textPtr->color; |
|
|
stipple = textPtr->stipple; |
|
|
if (state == TK_STATE_HIDDEN || textPtr->color == NULL || |
|
|
textPtr->text == NULL || *textPtr->text == 0) { |
|
|
return TCL_OK; |
|
|
} else if (((TkCanvas *)canvas)->currentItemPtr == itemPtr) { |
|
|
if (textPtr->activeColor!=NULL) { |
|
|
color = textPtr->activeColor; |
|
|
} |
|
|
if (textPtr->activeStipple!=None) { |
|
|
stipple = textPtr->activeStipple; |
|
|
} |
|
|
} else if (state==TK_STATE_DISABLED) { |
|
|
if (textPtr->disabledColor!=NULL) { |
|
|
color = textPtr->disabledColor; |
|
|
} |
|
|
if (textPtr->disabledStipple!=None) { |
|
|
stipple = textPtr->disabledStipple; |
|
|
} |
|
|
} |
|
|
|
|
|
if (Tk_CanvasPsFont(interp, canvas, textPtr->tkfont) != TCL_OK) { |
|
|
return TCL_ERROR; |
|
|
} |
|
|
if (prepass != 0) { |
|
|
return TCL_OK; |
|
|
} |
|
|
if (Tk_CanvasPsColor(interp, canvas, color) != TCL_OK) { |
|
|
return TCL_ERROR; |
|
|
} |
|
|
if (stipple != None) { |
|
|
Tcl_AppendResult(interp, "/StippleText {\n ", |
|
|
(char *) NULL); |
|
|
Tk_CanvasPsStipple(interp, canvas, stipple); |
|
|
Tcl_AppendResult(interp, "} bind def\n", (char *) NULL); |
|
|
} |
|
|
|
|
|
sprintf(buffer, "%.15g %.15g [\n", textPtr->x, |
|
|
Tk_CanvasPsY(canvas, textPtr->y)); |
|
|
Tcl_AppendResult(interp, buffer, (char *) NULL); |
|
|
|
|
|
Tk_TextLayoutToPostscript(interp, textPtr->textLayout); |
|
|
|
|
|
x = 0; y = 0; justify = NULL; /* lint. */ |
|
|
switch (textPtr->anchor) { |
|
|
case TK_ANCHOR_NW: x = 0; y = 0; break; |
|
|
case TK_ANCHOR_N: x = 1; y = 0; break; |
|
|
case TK_ANCHOR_NE: x = 2; y = 0; break; |
|
|
case TK_ANCHOR_E: x = 2; y = 1; break; |
|
|
case TK_ANCHOR_SE: x = 2; y = 2; break; |
|
|
case TK_ANCHOR_S: x = 1; y = 2; break; |
|
|
case TK_ANCHOR_SW: x = 0; y = 2; break; |
|
|
case TK_ANCHOR_W: x = 0; y = 1; break; |
|
|
case TK_ANCHOR_CENTER: x = 1; y = 1; break; |
|
|
} |
|
|
switch (textPtr->justify) { |
|
|
case TK_JUSTIFY_LEFT: justify = "0"; break; |
|
|
case TK_JUSTIFY_CENTER: justify = "0.5";break; |
|
|
case TK_JUSTIFY_RIGHT: justify = "1"; break; |
|
|
} |
|
|
|
|
|
Tk_GetFontMetrics(textPtr->tkfont, &fm); |
|
|
sprintf(buffer, "] %d %g %g %s %s DrawText\n", |
|
|
fm.linespace, x / -2.0, y / 2.0, justify, |
|
|
((stipple == None) ? "false" : "true")); |
|
|
Tcl_AppendResult(interp, buffer, (char *) NULL); |
|
|
|
|
|
return TCL_OK; |
|
|
} |
|
|
|
|
|
|
|
|
/* $History: tkCanvText.c $ |
|
|
* |
|
|
* ***************** Version 1 ***************** |
|
|
* User: Dtashley Date: 1/02/01 Time: 2:42a |
|
|
* Created in $/IjuScripter, IjuConsole/Source/Tk Base |
|
|
* Initial check-in. |
|
|
*/ |
|
|
|
|
|
/* End of TKCANVTEXT.C */ |
|
| 1 |
|
/* $Header$ */ |
| 2 |
|
|
| 3 |
|
/* |
| 4 |
|
* tkCanvText.c -- |
| 5 |
|
* |
| 6 |
|
* This file implements text items for canvas widgets. |
| 7 |
|
* |
| 8 |
|
* Copyright (c) 1991-1994 The Regents of the University of California. |
| 9 |
|
* Copyright (c) 1994-1997 Sun Microsystems, Inc. |
| 10 |
|
* |
| 11 |
|
* See the file "license.terms" for information on usage and redistribution |
| 12 |
|
* of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
| 13 |
|
* |
| 14 |
|
* RCS: @(#) $Id: tkcanvtext.c,v 1.1.1.1 2001/06/13 04:57:44 dtashley Exp $ |
| 15 |
|
*/ |
| 16 |
|
|
| 17 |
|
#include <stdio.h> |
| 18 |
|
#include "tkInt.h" |
| 19 |
|
#include "tkCanvas.h" |
| 20 |
|
#include "tkPort.h" |
| 21 |
|
#include "default.h" |
| 22 |
|
|
| 23 |
|
/* |
| 24 |
|
* The structure below defines the record for each text item. |
| 25 |
|
*/ |
| 26 |
|
|
| 27 |
|
typedef struct TextItem { |
| 28 |
|
Tk_Item header; /* Generic stuff that's the same for all |
| 29 |
|
* types. MUST BE FIRST IN STRUCTURE. */ |
| 30 |
|
Tk_CanvasTextInfo *textInfoPtr; |
| 31 |
|
/* Pointer to a structure containing |
| 32 |
|
* information about the selection and |
| 33 |
|
* insertion cursor. The structure is owned |
| 34 |
|
* by (and shared with) the generic canvas |
| 35 |
|
* code. */ |
| 36 |
|
/* |
| 37 |
|
* Fields that are set by widget commands other than "configure". |
| 38 |
|
*/ |
| 39 |
|
|
| 40 |
|
double x, y; /* Positioning point for text. */ |
| 41 |
|
int insertPos; /* Character index of character just before |
| 42 |
|
* which the insertion cursor is displayed. */ |
| 43 |
|
|
| 44 |
|
/* |
| 45 |
|
* Configuration settings that are updated by Tk_ConfigureWidget. |
| 46 |
|
*/ |
| 47 |
|
|
| 48 |
|
Tk_Anchor anchor; /* Where to anchor text relative to (x,y). */ |
| 49 |
|
Tk_TSOffset tsoffset; |
| 50 |
|
XColor *color; /* Color for text. */ |
| 51 |
|
XColor *activeColor; /* Color for text. */ |
| 52 |
|
XColor *disabledColor; /* Color for text. */ |
| 53 |
|
Tk_Font tkfont; /* Font for drawing text. */ |
| 54 |
|
Tk_Justify justify; /* Justification mode for text. */ |
| 55 |
|
Pixmap stipple; /* Stipple bitmap for text, or None. */ |
| 56 |
|
Pixmap activeStipple; /* Stipple bitmap for text, or None. */ |
| 57 |
|
Pixmap disabledStipple; /* Stipple bitmap for text, or None. */ |
| 58 |
|
char *text; /* Text for item (malloc-ed). */ |
| 59 |
|
int width; /* Width of lines for word-wrap, pixels. |
| 60 |
|
* Zero means no word-wrap. */ |
| 61 |
|
|
| 62 |
|
/* |
| 63 |
|
* Fields whose values are derived from the current values of the |
| 64 |
|
* configuration settings above. |
| 65 |
|
*/ |
| 66 |
|
|
| 67 |
|
int numChars; /* Length of text in characters. */ |
| 68 |
|
int numBytes; /* Length of text in bytes. */ |
| 69 |
|
Tk_TextLayout textLayout; /* Cached text layout information. */ |
| 70 |
|
int leftEdge; /* Pixel location of the left edge of the |
| 71 |
|
* text item; where the left border of the |
| 72 |
|
* text layout is drawn. */ |
| 73 |
|
int rightEdge; /* Pixel just to right of right edge of |
| 74 |
|
* area of text item. Used for selecting up |
| 75 |
|
* to end of line. */ |
| 76 |
|
GC gc; /* Graphics context for drawing text. */ |
| 77 |
|
GC selTextGC; /* Graphics context for selected text. */ |
| 78 |
|
GC cursorOffGC; /* If not None, this gives a graphics context |
| 79 |
|
* to use to draw the insertion cursor when |
| 80 |
|
* it's off. Used if the selection and |
| 81 |
|
* insertion cursor colors are the same. */ |
| 82 |
|
} TextItem; |
| 83 |
|
|
| 84 |
|
/* |
| 85 |
|
* Information used for parsing configuration specs: |
| 86 |
|
*/ |
| 87 |
|
|
| 88 |
|
static Tk_CustomOption stateOption = { |
| 89 |
|
(Tk_OptionParseProc *) TkStateParseProc, |
| 90 |
|
TkStatePrintProc, (ClientData) 2 |
| 91 |
|
}; |
| 92 |
|
static Tk_CustomOption tagsOption = { |
| 93 |
|
(Tk_OptionParseProc *) Tk_CanvasTagsParseProc, |
| 94 |
|
Tk_CanvasTagsPrintProc, (ClientData) NULL |
| 95 |
|
}; |
| 96 |
|
static Tk_CustomOption offsetOption = { |
| 97 |
|
(Tk_OptionParseProc *) TkOffsetParseProc, |
| 98 |
|
TkOffsetPrintProc, (ClientData) (TK_OFFSET_RELATIVE) |
| 99 |
|
}; |
| 100 |
|
|
| 101 |
|
static Tk_ConfigSpec configSpecs[] = { |
| 102 |
|
{TK_CONFIG_COLOR, "-activefill", (char *) NULL, (char *) NULL, |
| 103 |
|
(char *) NULL, Tk_Offset(TextItem, activeColor), TK_CONFIG_NULL_OK}, |
| 104 |
|
{TK_CONFIG_BITMAP, "-activestipple", (char *) NULL, (char *) NULL, |
| 105 |
|
(char *) NULL, Tk_Offset(TextItem, activeStipple), TK_CONFIG_NULL_OK}, |
| 106 |
|
{TK_CONFIG_ANCHOR, "-anchor", (char *) NULL, (char *) NULL, |
| 107 |
|
"center", Tk_Offset(TextItem, anchor), |
| 108 |
|
TK_CONFIG_DONT_SET_DEFAULT}, |
| 109 |
|
{TK_CONFIG_COLOR, "-disabledfill", (char *) NULL, (char *) NULL, |
| 110 |
|
(char *) NULL, Tk_Offset(TextItem, disabledColor), TK_CONFIG_NULL_OK}, |
| 111 |
|
{TK_CONFIG_BITMAP, "-disabledstipple", (char *) NULL, (char *) NULL, |
| 112 |
|
(char *) NULL, Tk_Offset(TextItem, disabledStipple), TK_CONFIG_NULL_OK}, |
| 113 |
|
{TK_CONFIG_COLOR, "-fill", (char *) NULL, (char *) NULL, |
| 114 |
|
"black", Tk_Offset(TextItem, color), TK_CONFIG_NULL_OK}, |
| 115 |
|
{TK_CONFIG_FONT, "-font", (char *) NULL, (char *) NULL, |
| 116 |
|
DEF_CANVTEXT_FONT, Tk_Offset(TextItem, tkfont), 0}, |
| 117 |
|
{TK_CONFIG_JUSTIFY, "-justify", (char *) NULL, (char *) NULL, |
| 118 |
|
"left", Tk_Offset(TextItem, justify), |
| 119 |
|
TK_CONFIG_DONT_SET_DEFAULT}, |
| 120 |
|
{TK_CONFIG_CUSTOM, "-offset", (char *) NULL, (char *) NULL, |
| 121 |
|
"0,0", Tk_Offset(TextItem, tsoffset), |
| 122 |
|
TK_CONFIG_DONT_SET_DEFAULT, &offsetOption}, |
| 123 |
|
{TK_CONFIG_CUSTOM, "-state", (char *) NULL, (char *) NULL, |
| 124 |
|
(char *) NULL, Tk_Offset(Tk_Item, state), TK_CONFIG_NULL_OK, |
| 125 |
|
&stateOption}, |
| 126 |
|
{TK_CONFIG_BITMAP, "-stipple", (char *) NULL, (char *) NULL, |
| 127 |
|
(char *) NULL, Tk_Offset(TextItem, stipple), TK_CONFIG_NULL_OK}, |
| 128 |
|
{TK_CONFIG_CUSTOM, "-tags", (char *) NULL, (char *) NULL, |
| 129 |
|
(char *) NULL, 0, TK_CONFIG_NULL_OK, &tagsOption}, |
| 130 |
|
{TK_CONFIG_STRING, "-text", (char *) NULL, (char *) NULL, |
| 131 |
|
"", Tk_Offset(TextItem, text), 0}, |
| 132 |
|
{TK_CONFIG_PIXELS, "-width", (char *) NULL, (char *) NULL, |
| 133 |
|
"0", Tk_Offset(TextItem, width), TK_CONFIG_DONT_SET_DEFAULT}, |
| 134 |
|
{TK_CONFIG_END, (char *) NULL, (char *) NULL, (char *) NULL, |
| 135 |
|
(char *) NULL, 0, 0} |
| 136 |
|
}; |
| 137 |
|
|
| 138 |
|
/* |
| 139 |
|
* Prototypes for procedures defined in this file: |
| 140 |
|
*/ |
| 141 |
|
|
| 142 |
|
static void ComputeTextBbox _ANSI_ARGS_((Tk_Canvas canvas, |
| 143 |
|
TextItem *textPtr)); |
| 144 |
|
static int ConfigureText _ANSI_ARGS_((Tcl_Interp *interp, |
| 145 |
|
Tk_Canvas canvas, Tk_Item *itemPtr, int argc, |
| 146 |
|
Tcl_Obj *CONST argv[], int flags)); |
| 147 |
|
static int CreateText _ANSI_ARGS_((Tcl_Interp *interp, |
| 148 |
|
Tk_Canvas canvas, struct Tk_Item *itemPtr, |
| 149 |
|
int argc, Tcl_Obj *CONST argv[])); |
| 150 |
|
static void DeleteText _ANSI_ARGS_((Tk_Canvas canvas, |
| 151 |
|
Tk_Item *itemPtr, Display *display)); |
| 152 |
|
static void DisplayCanvText _ANSI_ARGS_((Tk_Canvas canvas, |
| 153 |
|
Tk_Item *itemPtr, Display *display, Drawable dst, |
| 154 |
|
int x, int y, int width, int height)); |
| 155 |
|
static int GetSelText _ANSI_ARGS_((Tk_Canvas canvas, |
| 156 |
|
Tk_Item *itemPtr, int offset, char *buffer, |
| 157 |
|
int maxBytes)); |
| 158 |
|
static int GetTextIndex _ANSI_ARGS_((Tcl_Interp *interp, |
| 159 |
|
Tk_Canvas canvas, Tk_Item *itemPtr, |
| 160 |
|
Tcl_Obj *obj, int *indexPtr)); |
| 161 |
|
static void ScaleText _ANSI_ARGS_((Tk_Canvas canvas, |
| 162 |
|
Tk_Item *itemPtr, double originX, double originY, |
| 163 |
|
double scaleX, double scaleY)); |
| 164 |
|
static void SetTextCursor _ANSI_ARGS_((Tk_Canvas canvas, |
| 165 |
|
Tk_Item *itemPtr, int index)); |
| 166 |
|
static int TextCoords _ANSI_ARGS_((Tcl_Interp *interp, |
| 167 |
|
Tk_Canvas canvas, Tk_Item *itemPtr, |
| 168 |
|
int argc, Tcl_Obj *CONST argv[])); |
| 169 |
|
static void TextDeleteChars _ANSI_ARGS_((Tk_Canvas canvas, |
| 170 |
|
Tk_Item *itemPtr, int first, int last)); |
| 171 |
|
static void TextInsert _ANSI_ARGS_((Tk_Canvas canvas, |
| 172 |
|
Tk_Item *itemPtr, int beforeThis, char *string)); |
| 173 |
|
static int TextToArea _ANSI_ARGS_((Tk_Canvas canvas, |
| 174 |
|
Tk_Item *itemPtr, double *rectPtr)); |
| 175 |
|
static double TextToPoint _ANSI_ARGS_((Tk_Canvas canvas, |
| 176 |
|
Tk_Item *itemPtr, double *pointPtr)); |
| 177 |
|
static int TextToPostscript _ANSI_ARGS_((Tcl_Interp *interp, |
| 178 |
|
Tk_Canvas canvas, Tk_Item *itemPtr, int prepass)); |
| 179 |
|
static void TranslateText _ANSI_ARGS_((Tk_Canvas canvas, |
| 180 |
|
Tk_Item *itemPtr, double deltaX, double deltaY)); |
| 181 |
|
|
| 182 |
|
/* |
| 183 |
|
* The structures below defines the rectangle and oval item types |
| 184 |
|
* by means of procedures that can be invoked by generic item code. |
| 185 |
|
*/ |
| 186 |
|
|
| 187 |
|
Tk_ItemType tkTextType = { |
| 188 |
|
"text", /* name */ |
| 189 |
|
sizeof(TextItem), /* itemSize */ |
| 190 |
|
CreateText, /* createProc */ |
| 191 |
|
configSpecs, /* configSpecs */ |
| 192 |
|
ConfigureText, /* configureProc */ |
| 193 |
|
TextCoords, /* coordProc */ |
| 194 |
|
DeleteText, /* deleteProc */ |
| 195 |
|
DisplayCanvText, /* displayProc */ |
| 196 |
|
TK_CONFIG_OBJS, /* flags */ |
| 197 |
|
TextToPoint, /* pointProc */ |
| 198 |
|
TextToArea, /* areaProc */ |
| 199 |
|
TextToPostscript, /* postscriptProc */ |
| 200 |
|
ScaleText, /* scaleProc */ |
| 201 |
|
TranslateText, /* translateProc */ |
| 202 |
|
(Tk_ItemIndexProc *) GetTextIndex,/* indexProc */ |
| 203 |
|
SetTextCursor, /* icursorProc */ |
| 204 |
|
GetSelText, /* selectionProc */ |
| 205 |
|
TextInsert, /* insertProc */ |
| 206 |
|
TextDeleteChars, /* dTextProc */ |
| 207 |
|
(Tk_ItemType *) NULL, /* nextPtr */ |
| 208 |
|
}; |
| 209 |
|
|
| 210 |
|
/* |
| 211 |
|
*-------------------------------------------------------------- |
| 212 |
|
* |
| 213 |
|
* CreateText -- |
| 214 |
|
* |
| 215 |
|
* This procedure is invoked to create a new text item |
| 216 |
|
* in a canvas. |
| 217 |
|
* |
| 218 |
|
* Results: |
| 219 |
|
* A standard Tcl return value. If an error occurred in |
| 220 |
|
* creating the item then an error message is left in |
| 221 |
|
* the interp's result; in this case itemPtr is left uninitialized |
| 222 |
|
* so it can be safely freed by the caller. |
| 223 |
|
* |
| 224 |
|
* Side effects: |
| 225 |
|
* A new text item is created. |
| 226 |
|
* |
| 227 |
|
*-------------------------------------------------------------- |
| 228 |
|
*/ |
| 229 |
|
|
| 230 |
|
static int |
| 231 |
|
CreateText(interp, canvas, itemPtr, argc, argv) |
| 232 |
|
Tcl_Interp *interp; /* Interpreter for error reporting. */ |
| 233 |
|
Tk_Canvas canvas; /* Canvas to hold new item. */ |
| 234 |
|
Tk_Item *itemPtr; /* Record to hold new item; header has been |
| 235 |
|
* initialized by caller. */ |
| 236 |
|
int argc; /* Number of arguments in argv. */ |
| 237 |
|
Tcl_Obj *CONST argv[]; /* Arguments describing rectangle. */ |
| 238 |
|
{ |
| 239 |
|
TextItem *textPtr = (TextItem *) itemPtr; |
| 240 |
|
int i; |
| 241 |
|
|
| 242 |
|
if (argc==1) { |
| 243 |
|
i = 1; |
| 244 |
|
} else { |
| 245 |
|
char *arg = Tcl_GetStringFromObj(argv[1], NULL); |
| 246 |
|
if ((argc>1) && (arg[0] == '-') |
| 247 |
|
&& (arg[1] >= 'a') && (arg[1] <= 'z')) { |
| 248 |
|
i = 1; |
| 249 |
|
} else { |
| 250 |
|
i = 2; |
| 251 |
|
} |
| 252 |
|
} |
| 253 |
|
|
| 254 |
|
if (argc < i) { |
| 255 |
|
Tcl_AppendResult(interp, "wrong # args: should be \"", |
| 256 |
|
Tk_PathName(Tk_CanvasTkwin(canvas)), " create ", |
| 257 |
|
itemPtr->typePtr->name, " x y ?options?\"", (char *) NULL); |
| 258 |
|
return TCL_ERROR; |
| 259 |
|
} |
| 260 |
|
|
| 261 |
|
/* |
| 262 |
|
* Carry out initialization that is needed in order to clean up after |
| 263 |
|
* errors during the the remainder of this procedure. |
| 264 |
|
*/ |
| 265 |
|
|
| 266 |
|
textPtr->textInfoPtr = Tk_CanvasGetTextInfo(canvas); |
| 267 |
|
|
| 268 |
|
textPtr->insertPos = 0; |
| 269 |
|
|
| 270 |
|
textPtr->anchor = TK_ANCHOR_CENTER; |
| 271 |
|
textPtr->tsoffset.flags = 0; |
| 272 |
|
textPtr->tsoffset.xoffset = 0; |
| 273 |
|
textPtr->tsoffset.yoffset = 0; |
| 274 |
|
textPtr->color = NULL; |
| 275 |
|
textPtr->activeColor = NULL; |
| 276 |
|
textPtr->disabledColor = NULL; |
| 277 |
|
textPtr->tkfont = NULL; |
| 278 |
|
textPtr->justify = TK_JUSTIFY_LEFT; |
| 279 |
|
textPtr->stipple = None; |
| 280 |
|
textPtr->activeStipple = None; |
| 281 |
|
textPtr->disabledStipple = None; |
| 282 |
|
textPtr->text = NULL; |
| 283 |
|
textPtr->width = 0; |
| 284 |
|
|
| 285 |
|
textPtr->numChars = 0; |
| 286 |
|
textPtr->numBytes = 0; |
| 287 |
|
textPtr->textLayout = NULL; |
| 288 |
|
textPtr->leftEdge = 0; |
| 289 |
|
textPtr->rightEdge = 0; |
| 290 |
|
textPtr->gc = None; |
| 291 |
|
textPtr->selTextGC = None; |
| 292 |
|
textPtr->cursorOffGC = None; |
| 293 |
|
|
| 294 |
|
/* |
| 295 |
|
* Process the arguments to fill in the item record. |
| 296 |
|
*/ |
| 297 |
|
|
| 298 |
|
if ((TextCoords(interp, canvas, itemPtr, i, argv) != TCL_OK)) { |
| 299 |
|
goto error; |
| 300 |
|
} |
| 301 |
|
if (ConfigureText(interp, canvas, itemPtr, argc-i, argv+i, 0) == TCL_OK) { |
| 302 |
|
return TCL_OK; |
| 303 |
|
} |
| 304 |
|
|
| 305 |
|
error: |
| 306 |
|
DeleteText(canvas, itemPtr, Tk_Display(Tk_CanvasTkwin(canvas))); |
| 307 |
|
return TCL_ERROR; |
| 308 |
|
} |
| 309 |
|
|
| 310 |
|
/* |
| 311 |
|
*-------------------------------------------------------------- |
| 312 |
|
* |
| 313 |
|
* TextCoords -- |
| 314 |
|
* |
| 315 |
|
* This procedure is invoked to process the "coords" widget |
| 316 |
|
* command on text items. See the user documentation for |
| 317 |
|
* details on what it does. |
| 318 |
|
* |
| 319 |
|
* Results: |
| 320 |
|
* Returns TCL_OK or TCL_ERROR, and sets the interp's result. |
| 321 |
|
* |
| 322 |
|
* Side effects: |
| 323 |
|
* The coordinates for the given item may be changed. |
| 324 |
|
* |
| 325 |
|
*-------------------------------------------------------------- |
| 326 |
|
*/ |
| 327 |
|
|
| 328 |
|
static int |
| 329 |
|
TextCoords(interp, canvas, itemPtr, argc, argv) |
| 330 |
|
Tcl_Interp *interp; /* Used for error reporting. */ |
| 331 |
|
Tk_Canvas canvas; /* Canvas containing item. */ |
| 332 |
|
Tk_Item *itemPtr; /* Item whose coordinates are to be read or |
| 333 |
|
* modified. */ |
| 334 |
|
int argc; /* Number of coordinates supplied in argv. */ |
| 335 |
|
Tcl_Obj *CONST argv[]; /* Array of coordinates: x1, y1, x2, y2, ... */ |
| 336 |
|
{ |
| 337 |
|
TextItem *textPtr = (TextItem *) itemPtr; |
| 338 |
|
|
| 339 |
|
if (argc == 0) { |
| 340 |
|
Tcl_Obj *obj = Tcl_NewObj(); |
| 341 |
|
Tcl_Obj *subobj = Tcl_NewDoubleObj(textPtr->x); |
| 342 |
|
Tcl_ListObjAppendElement(interp, obj, subobj); |
| 343 |
|
subobj = Tcl_NewDoubleObj(textPtr->y); |
| 344 |
|
Tcl_ListObjAppendElement(interp, obj, subobj); |
| 345 |
|
Tcl_SetObjResult(interp, obj); |
| 346 |
|
} else if (argc < 3) { |
| 347 |
|
if (argc==1) { |
| 348 |
|
if (Tcl_ListObjGetElements(interp, argv[0], &argc, |
| 349 |
|
(Tcl_Obj ***) &argv) != TCL_OK) { |
| 350 |
|
return TCL_ERROR; |
| 351 |
|
} else if (argc != 2) { |
| 352 |
|
char buf[64 + TCL_INTEGER_SPACE]; |
| 353 |
|
|
| 354 |
|
sprintf(buf, "wrong # coordinates: expected 2, got %d", argc); |
| 355 |
|
Tcl_SetResult(interp, buf, TCL_VOLATILE); |
| 356 |
|
return TCL_ERROR; |
| 357 |
|
} |
| 358 |
|
} |
| 359 |
|
if ((Tk_CanvasGetCoordFromObj(interp, canvas, argv[0], &textPtr->x) != TCL_OK) |
| 360 |
|
|| (Tk_CanvasGetCoordFromObj(interp, canvas, argv[1], |
| 361 |
|
&textPtr->y) != TCL_OK)) { |
| 362 |
|
return TCL_ERROR; |
| 363 |
|
} |
| 364 |
|
ComputeTextBbox(canvas, textPtr); |
| 365 |
|
} else { |
| 366 |
|
char buf[64 + TCL_INTEGER_SPACE]; |
| 367 |
|
|
| 368 |
|
sprintf(buf, "wrong # coordinates: expected 0 or 2, got %d", argc); |
| 369 |
|
Tcl_SetResult(interp, buf, TCL_VOLATILE); |
| 370 |
|
return TCL_ERROR; |
| 371 |
|
} |
| 372 |
|
return TCL_OK; |
| 373 |
|
} |
| 374 |
|
|
| 375 |
|
/* |
| 376 |
|
*-------------------------------------------------------------- |
| 377 |
|
* |
| 378 |
|
* ConfigureText -- |
| 379 |
|
* |
| 380 |
|
* This procedure is invoked to configure various aspects |
| 381 |
|
* of a text item, such as its border and background colors. |
| 382 |
|
* |
| 383 |
|
* Results: |
| 384 |
|
* A standard Tcl result code. If an error occurs, then |
| 385 |
|
* an error message is left in the interp's result. |
| 386 |
|
* |
| 387 |
|
* Side effects: |
| 388 |
|
* Configuration information, such as colors and stipple |
| 389 |
|
* patterns, may be set for itemPtr. |
| 390 |
|
* |
| 391 |
|
*-------------------------------------------------------------- |
| 392 |
|
*/ |
| 393 |
|
|
| 394 |
|
static int |
| 395 |
|
ConfigureText(interp, canvas, itemPtr, argc, argv, flags) |
| 396 |
|
Tcl_Interp *interp; /* Interpreter for error reporting. */ |
| 397 |
|
Tk_Canvas canvas; /* Canvas containing itemPtr. */ |
| 398 |
|
Tk_Item *itemPtr; /* Rectangle item to reconfigure. */ |
| 399 |
|
int argc; /* Number of elements in argv. */ |
| 400 |
|
Tcl_Obj *CONST argv[]; /* Arguments describing things to configure. */ |
| 401 |
|
int flags; /* Flags to pass to Tk_ConfigureWidget. */ |
| 402 |
|
{ |
| 403 |
|
TextItem *textPtr = (TextItem *) itemPtr; |
| 404 |
|
XGCValues gcValues; |
| 405 |
|
GC newGC, newSelGC; |
| 406 |
|
unsigned long mask; |
| 407 |
|
Tk_Window tkwin; |
| 408 |
|
Tk_CanvasTextInfo *textInfoPtr = textPtr->textInfoPtr; |
| 409 |
|
XColor *selBgColorPtr; |
| 410 |
|
XColor *color; |
| 411 |
|
Pixmap stipple; |
| 412 |
|
Tk_State state; |
| 413 |
|
|
| 414 |
|
tkwin = Tk_CanvasTkwin(canvas); |
| 415 |
|
if (Tk_ConfigureWidget(interp, tkwin, configSpecs, argc, (char **) argv, |
| 416 |
|
(char *) textPtr, flags|TK_CONFIG_OBJS) != TCL_OK) { |
| 417 |
|
return TCL_ERROR; |
| 418 |
|
} |
| 419 |
|
|
| 420 |
|
/* |
| 421 |
|
* A few of the options require additional processing, such as |
| 422 |
|
* graphics contexts. |
| 423 |
|
*/ |
| 424 |
|
|
| 425 |
|
state = itemPtr->state; |
| 426 |
|
|
| 427 |
|
if (textPtr->activeColor != NULL || |
| 428 |
|
textPtr->activeStipple != None) { |
| 429 |
|
itemPtr->redraw_flags |= TK_ITEM_STATE_DEPENDANT; |
| 430 |
|
} else { |
| 431 |
|
itemPtr->redraw_flags &= ~TK_ITEM_STATE_DEPENDANT; |
| 432 |
|
} |
| 433 |
|
|
| 434 |
|
if(state == TK_STATE_NULL) { |
| 435 |
|
state = ((TkCanvas *)canvas)->canvas_state; |
| 436 |
|
} |
| 437 |
|
|
| 438 |
|
color = textPtr->color; |
| 439 |
|
stipple = textPtr->stipple; |
| 440 |
|
if (((TkCanvas *)canvas)->currentItemPtr == itemPtr) { |
| 441 |
|
if (textPtr->activeColor!=NULL) { |
| 442 |
|
color = textPtr->activeColor; |
| 443 |
|
} |
| 444 |
|
if (textPtr->activeStipple!=None) { |
| 445 |
|
stipple = textPtr->activeStipple; |
| 446 |
|
} |
| 447 |
|
} else if (state==TK_STATE_DISABLED) { |
| 448 |
|
if (textPtr->disabledColor!=NULL) { |
| 449 |
|
color = textPtr->disabledColor; |
| 450 |
|
} |
| 451 |
|
if (textPtr->disabledStipple!=None) { |
| 452 |
|
stipple = textPtr->disabledStipple; |
| 453 |
|
} |
| 454 |
|
} |
| 455 |
|
|
| 456 |
|
newGC = newSelGC = None; |
| 457 |
|
if (textPtr->tkfont != NULL) { |
| 458 |
|
gcValues.font = Tk_FontId(textPtr->tkfont); |
| 459 |
|
mask = GCFont; |
| 460 |
|
if (color != NULL) { |
| 461 |
|
gcValues.foreground = color->pixel; |
| 462 |
|
mask |= GCForeground; |
| 463 |
|
if (stipple != None) { |
| 464 |
|
gcValues.stipple = stipple; |
| 465 |
|
gcValues.fill_style = FillStippled; |
| 466 |
|
mask |= GCStipple|GCFillStyle; |
| 467 |
|
} |
| 468 |
|
newGC = Tk_GetGC(tkwin, mask, &gcValues); |
| 469 |
|
} |
| 470 |
|
mask &= ~(GCTile|GCFillStyle|GCStipple); |
| 471 |
|
if (stipple != None) { |
| 472 |
|
gcValues.stipple = stipple; |
| 473 |
|
gcValues.fill_style = FillStippled; |
| 474 |
|
mask |= GCStipple|GCFillStyle; |
| 475 |
|
} |
| 476 |
|
gcValues.foreground = textInfoPtr->selFgColorPtr->pixel; |
| 477 |
|
newSelGC = Tk_GetGC(tkwin, mask|GCForeground, &gcValues); |
| 478 |
|
} |
| 479 |
|
if (textPtr->gc != None) { |
| 480 |
|
Tk_FreeGC(Tk_Display(tkwin), textPtr->gc); |
| 481 |
|
} |
| 482 |
|
textPtr->gc = newGC; |
| 483 |
|
if (textPtr->selTextGC != None) { |
| 484 |
|
Tk_FreeGC(Tk_Display(tkwin), textPtr->selTextGC); |
| 485 |
|
} |
| 486 |
|
textPtr->selTextGC = newSelGC; |
| 487 |
|
|
| 488 |
|
selBgColorPtr = Tk_3DBorderColor(textInfoPtr->selBorder); |
| 489 |
|
if (Tk_3DBorderColor(textInfoPtr->insertBorder)->pixel |
| 490 |
|
== selBgColorPtr->pixel) { |
| 491 |
|
if (selBgColorPtr->pixel == BlackPixelOfScreen(Tk_Screen(tkwin))) { |
| 492 |
|
gcValues.foreground = WhitePixelOfScreen(Tk_Screen(tkwin)); |
| 493 |
|
} else { |
| 494 |
|
gcValues.foreground = BlackPixelOfScreen(Tk_Screen(tkwin)); |
| 495 |
|
} |
| 496 |
|
newGC = Tk_GetGC(tkwin, GCForeground, &gcValues); |
| 497 |
|
} else { |
| 498 |
|
newGC = None; |
| 499 |
|
} |
| 500 |
|
if (textPtr->cursorOffGC != None) { |
| 501 |
|
Tk_FreeGC(Tk_Display(tkwin), textPtr->cursorOffGC); |
| 502 |
|
} |
| 503 |
|
textPtr->cursorOffGC = newGC; |
| 504 |
|
|
| 505 |
|
|
| 506 |
|
/* |
| 507 |
|
* If the text was changed, move the selection and insertion indices |
| 508 |
|
* to keep them inside the item. |
| 509 |
|
*/ |
| 510 |
|
|
| 511 |
|
textPtr->numBytes = strlen(textPtr->text); |
| 512 |
|
textPtr->numChars = Tcl_NumUtfChars(textPtr->text, textPtr->numBytes); |
| 513 |
|
if (textInfoPtr->selItemPtr == itemPtr) { |
| 514 |
|
|
| 515 |
|
if (textInfoPtr->selectFirst >= textPtr->numChars) { |
| 516 |
|
textInfoPtr->selItemPtr = NULL; |
| 517 |
|
} else { |
| 518 |
|
if (textInfoPtr->selectLast >= textPtr->numChars) { |
| 519 |
|
textInfoPtr->selectLast = textPtr->numChars - 1; |
| 520 |
|
} |
| 521 |
|
if ((textInfoPtr->anchorItemPtr == itemPtr) |
| 522 |
|
&& (textInfoPtr->selectAnchor >= textPtr->numChars)) { |
| 523 |
|
textInfoPtr->selectAnchor = textPtr->numChars - 1; |
| 524 |
|
} |
| 525 |
|
} |
| 526 |
|
} |
| 527 |
|
if (textPtr->insertPos >= textPtr->numChars) { |
| 528 |
|
textPtr->insertPos = textPtr->numChars; |
| 529 |
|
} |
| 530 |
|
|
| 531 |
|
ComputeTextBbox(canvas, textPtr); |
| 532 |
|
return TCL_OK; |
| 533 |
|
} |
| 534 |
|
|
| 535 |
|
/* |
| 536 |
|
*-------------------------------------------------------------- |
| 537 |
|
* |
| 538 |
|
* DeleteText -- |
| 539 |
|
* |
| 540 |
|
* This procedure is called to clean up the data structure |
| 541 |
|
* associated with a text item. |
| 542 |
|
* |
| 543 |
|
* Results: |
| 544 |
|
* None. |
| 545 |
|
* |
| 546 |
|
* Side effects: |
| 547 |
|
* Resources associated with itemPtr are released. |
| 548 |
|
* |
| 549 |
|
*-------------------------------------------------------------- |
| 550 |
|
*/ |
| 551 |
|
|
| 552 |
|
static void |
| 553 |
|
DeleteText(canvas, itemPtr, display) |
| 554 |
|
Tk_Canvas canvas; /* Info about overall canvas widget. */ |
| 555 |
|
Tk_Item *itemPtr; /* Item that is being deleted. */ |
| 556 |
|
Display *display; /* Display containing window for canvas. */ |
| 557 |
|
{ |
| 558 |
|
TextItem *textPtr = (TextItem *) itemPtr; |
| 559 |
|
|
| 560 |
|
if (textPtr->color != NULL) { |
| 561 |
|
Tk_FreeColor(textPtr->color); |
| 562 |
|
} |
| 563 |
|
if (textPtr->activeColor != NULL) { |
| 564 |
|
Tk_FreeColor(textPtr->activeColor); |
| 565 |
|
} |
| 566 |
|
if (textPtr->disabledColor != NULL) { |
| 567 |
|
Tk_FreeColor(textPtr->disabledColor); |
| 568 |
|
} |
| 569 |
|
Tk_FreeFont(textPtr->tkfont); |
| 570 |
|
if (textPtr->stipple != None) { |
| 571 |
|
Tk_FreeBitmap(display, textPtr->stipple); |
| 572 |
|
} |
| 573 |
|
if (textPtr->activeStipple != None) { |
| 574 |
|
Tk_FreeBitmap(display, textPtr->activeStipple); |
| 575 |
|
} |
| 576 |
|
if (textPtr->disabledStipple != None) { |
| 577 |
|
Tk_FreeBitmap(display, textPtr->disabledStipple); |
| 578 |
|
} |
| 579 |
|
if (textPtr->text != NULL) { |
| 580 |
|
ckfree(textPtr->text); |
| 581 |
|
} |
| 582 |
|
|
| 583 |
|
Tk_FreeTextLayout(textPtr->textLayout); |
| 584 |
|
if (textPtr->gc != None) { |
| 585 |
|
Tk_FreeGC(display, textPtr->gc); |
| 586 |
|
} |
| 587 |
|
if (textPtr->selTextGC != None) { |
| 588 |
|
Tk_FreeGC(display, textPtr->selTextGC); |
| 589 |
|
} |
| 590 |
|
if (textPtr->cursorOffGC != None) { |
| 591 |
|
Tk_FreeGC(display, textPtr->cursorOffGC); |
| 592 |
|
} |
| 593 |
|
} |
| 594 |
|
|
| 595 |
|
/* |
| 596 |
|
*-------------------------------------------------------------- |
| 597 |
|
* |
| 598 |
|
* ComputeTextBbox -- |
| 599 |
|
* |
| 600 |
|
* This procedure is invoked to compute the bounding box of |
| 601 |
|
* all the pixels that may be drawn as part of a text item. |
| 602 |
|
* In addition, it recomputes all of the geometry information |
| 603 |
|
* used to display a text item or check for mouse hits. |
| 604 |
|
* |
| 605 |
|
* Results: |
| 606 |
|
* None. |
| 607 |
|
* |
| 608 |
|
* Side effects: |
| 609 |
|
* The fields x1, y1, x2, and y2 are updated in the header |
| 610 |
|
* for itemPtr, and the linePtr structure is regenerated |
| 611 |
|
* for itemPtr. |
| 612 |
|
* |
| 613 |
|
*-------------------------------------------------------------- |
| 614 |
|
*/ |
| 615 |
|
|
| 616 |
|
static void |
| 617 |
|
ComputeTextBbox(canvas, textPtr) |
| 618 |
|
Tk_Canvas canvas; /* Canvas that contains item. */ |
| 619 |
|
TextItem *textPtr; /* Item whose bbox is to be recomputed. */ |
| 620 |
|
{ |
| 621 |
|
Tk_CanvasTextInfo *textInfoPtr; |
| 622 |
|
int leftX, topY, width, height, fudge; |
| 623 |
|
Tk_State state = textPtr->header.state; |
| 624 |
|
|
| 625 |
|
if(state == TK_STATE_NULL) { |
| 626 |
|
state = ((TkCanvas *)canvas)->canvas_state; |
| 627 |
|
} |
| 628 |
|
|
| 629 |
|
Tk_FreeTextLayout(textPtr->textLayout); |
| 630 |
|
textPtr->textLayout = Tk_ComputeTextLayout(textPtr->tkfont, |
| 631 |
|
textPtr->text, textPtr->numChars, textPtr->width, |
| 632 |
|
textPtr->justify, 0, &width, &height); |
| 633 |
|
|
| 634 |
|
if (state == TK_STATE_HIDDEN || textPtr->color == NULL) { |
| 635 |
|
width = height = 0; |
| 636 |
|
} |
| 637 |
|
|
| 638 |
|
/* |
| 639 |
|
* Use overall geometry information to compute the top-left corner |
| 640 |
|
* of the bounding box for the text item. |
| 641 |
|
*/ |
| 642 |
|
|
| 643 |
|
leftX = (int) (textPtr->x + 0.5); |
| 644 |
|
topY = (int) (textPtr->y + 0.5); |
| 645 |
|
switch (textPtr->anchor) { |
| 646 |
|
case TK_ANCHOR_NW: |
| 647 |
|
case TK_ANCHOR_N: |
| 648 |
|
case TK_ANCHOR_NE: |
| 649 |
|
break; |
| 650 |
|
|
| 651 |
|
case TK_ANCHOR_W: |
| 652 |
|
case TK_ANCHOR_CENTER: |
| 653 |
|
case TK_ANCHOR_E: |
| 654 |
|
topY -= height / 2; |
| 655 |
|
break; |
| 656 |
|
|
| 657 |
|
case TK_ANCHOR_SW: |
| 658 |
|
case TK_ANCHOR_S: |
| 659 |
|
case TK_ANCHOR_SE: |
| 660 |
|
topY -= height; |
| 661 |
|
break; |
| 662 |
|
} |
| 663 |
|
switch (textPtr->anchor) { |
| 664 |
|
case TK_ANCHOR_NW: |
| 665 |
|
case TK_ANCHOR_W: |
| 666 |
|
case TK_ANCHOR_SW: |
| 667 |
|
break; |
| 668 |
|
|
| 669 |
|
case TK_ANCHOR_N: |
| 670 |
|
case TK_ANCHOR_CENTER: |
| 671 |
|
case TK_ANCHOR_S: |
| 672 |
|
leftX -= width / 2; |
| 673 |
|
break; |
| 674 |
|
|
| 675 |
|
case TK_ANCHOR_NE: |
| 676 |
|
case TK_ANCHOR_E: |
| 677 |
|
case TK_ANCHOR_SE: |
| 678 |
|
leftX -= width; |
| 679 |
|
break; |
| 680 |
|
} |
| 681 |
|
|
| 682 |
|
textPtr->leftEdge = leftX; |
| 683 |
|
textPtr->rightEdge = leftX + width; |
| 684 |
|
|
| 685 |
|
/* |
| 686 |
|
* Last of all, update the bounding box for the item. The item's |
| 687 |
|
* bounding box includes the bounding box of all its lines, plus |
| 688 |
|
* an extra fudge factor for the cursor border (which could |
| 689 |
|
* potentially be quite large). |
| 690 |
|
*/ |
| 691 |
|
|
| 692 |
|
textInfoPtr = textPtr->textInfoPtr; |
| 693 |
|
fudge = (textInfoPtr->insertWidth + 1) / 2; |
| 694 |
|
if (textInfoPtr->selBorderWidth > fudge) { |
| 695 |
|
fudge = textInfoPtr->selBorderWidth; |
| 696 |
|
} |
| 697 |
|
textPtr->header.x1 = leftX - fudge; |
| 698 |
|
textPtr->header.y1 = topY; |
| 699 |
|
textPtr->header.x2 = leftX + width + fudge; |
| 700 |
|
textPtr->header.y2 = topY + height; |
| 701 |
|
} |
| 702 |
|
|
| 703 |
|
/* |
| 704 |
|
*-------------------------------------------------------------- |
| 705 |
|
* |
| 706 |
|
* DisplayCanvText -- |
| 707 |
|
* |
| 708 |
|
* This procedure is invoked to draw a text item in a given |
| 709 |
|
* drawable. |
| 710 |
|
* |
| 711 |
|
* Results: |
| 712 |
|
* None. |
| 713 |
|
* |
| 714 |
|
* Side effects: |
| 715 |
|
* ItemPtr is drawn in drawable using the transformation |
| 716 |
|
* information in canvas. |
| 717 |
|
* |
| 718 |
|
*-------------------------------------------------------------- |
| 719 |
|
*/ |
| 720 |
|
|
| 721 |
|
static void |
| 722 |
|
DisplayCanvText(canvas, itemPtr, display, drawable, x, y, width, height) |
| 723 |
|
Tk_Canvas canvas; /* Canvas that contains item. */ |
| 724 |
|
Tk_Item *itemPtr; /* Item to be displayed. */ |
| 725 |
|
Display *display; /* Display on which to draw item. */ |
| 726 |
|
Drawable drawable; /* Pixmap or window in which to draw item. */ |
| 727 |
|
int x, y, width, height; /* Describes region of canvas that must be |
| 728 |
|
* redisplayed (not used). */ |
| 729 |
|
{ |
| 730 |
|
TextItem *textPtr; |
| 731 |
|
Tk_CanvasTextInfo *textInfoPtr; |
| 732 |
|
int selFirstChar, selLastChar; |
| 733 |
|
short drawableX, drawableY; |
| 734 |
|
Pixmap stipple; |
| 735 |
|
Tk_State state = itemPtr->state; |
| 736 |
|
|
| 737 |
|
textPtr = (TextItem *) itemPtr; |
| 738 |
|
textInfoPtr = textPtr->textInfoPtr; |
| 739 |
|
|
| 740 |
|
if(state == TK_STATE_NULL) { |
| 741 |
|
state = ((TkCanvas *)canvas)->canvas_state; |
| 742 |
|
} |
| 743 |
|
stipple = textPtr->stipple; |
| 744 |
|
if (((TkCanvas *)canvas)->currentItemPtr == itemPtr) { |
| 745 |
|
if (textPtr->activeStipple!=None) { |
| 746 |
|
stipple = textPtr->activeStipple; |
| 747 |
|
} |
| 748 |
|
} else if (state==TK_STATE_DISABLED) { |
| 749 |
|
if (textPtr->disabledStipple!=None) { |
| 750 |
|
stipple = textPtr->disabledStipple; |
| 751 |
|
} |
| 752 |
|
} |
| 753 |
|
|
| 754 |
|
if (textPtr->gc == None) { |
| 755 |
|
return; |
| 756 |
|
} |
| 757 |
|
|
| 758 |
|
/* |
| 759 |
|
* If we're stippling, then modify the stipple offset in the GC. Be |
| 760 |
|
* sure to reset the offset when done, since the GC is supposed to be |
| 761 |
|
* read-only. |
| 762 |
|
*/ |
| 763 |
|
|
| 764 |
|
if (stipple != None) { |
| 765 |
|
Tk_CanvasSetOffset(canvas, textPtr->gc, &textPtr->tsoffset); |
| 766 |
|
} |
| 767 |
|
|
| 768 |
|
selFirstChar = -1; |
| 769 |
|
selLastChar = 0; /* lint. */ |
| 770 |
|
|
| 771 |
|
if (textInfoPtr->selItemPtr == itemPtr) { |
| 772 |
|
selFirstChar = textInfoPtr->selectFirst; |
| 773 |
|
selLastChar = textInfoPtr->selectLast; |
| 774 |
|
if (selLastChar > textPtr->numChars) { |
| 775 |
|
selLastChar = textPtr->numChars - 1; |
| 776 |
|
} |
| 777 |
|
if ((selFirstChar >= 0) && (selFirstChar <= selLastChar)) { |
| 778 |
|
int xFirst, yFirst, hFirst; |
| 779 |
|
int xLast, yLast; |
| 780 |
|
|
| 781 |
|
/* |
| 782 |
|
* Draw a special background under the selection. |
| 783 |
|
*/ |
| 784 |
|
|
| 785 |
|
Tk_CharBbox(textPtr->textLayout, selFirstChar, &xFirst, &yFirst, |
| 786 |
|
NULL, &hFirst); |
| 787 |
|
Tk_CharBbox(textPtr->textLayout, selLastChar, &xLast, &yLast, |
| 788 |
|
NULL, NULL); |
| 789 |
|
|
| 790 |
|
/* |
| 791 |
|
* If the selection spans the end of this line, then display |
| 792 |
|
* selection background all the way to the end of the line. |
| 793 |
|
* However, for the last line we only want to display up to the |
| 794 |
|
* last character, not the end of the line. |
| 795 |
|
*/ |
| 796 |
|
|
| 797 |
|
x = xFirst; |
| 798 |
|
height = hFirst; |
| 799 |
|
for (y = yFirst ; y <= yLast; y += height) { |
| 800 |
|
if (y == yLast) { |
| 801 |
|
width = xLast - x; |
| 802 |
|
} else { |
| 803 |
|
width = textPtr->rightEdge - textPtr->leftEdge - x; |
| 804 |
|
} |
| 805 |
|
Tk_CanvasDrawableCoords(canvas, |
| 806 |
|
(double) (textPtr->leftEdge + x |
| 807 |
|
- textInfoPtr->selBorderWidth), |
| 808 |
|
(double) (textPtr->header.y1 + y), |
| 809 |
|
&drawableX, &drawableY); |
| 810 |
|
Tk_Fill3DRectangle(Tk_CanvasTkwin(canvas), drawable, |
| 811 |
|
textInfoPtr->selBorder, drawableX, drawableY, |
| 812 |
|
width + 2 * textInfoPtr->selBorderWidth, |
| 813 |
|
height, textInfoPtr->selBorderWidth, TK_RELIEF_RAISED); |
| 814 |
|
x = 0; |
| 815 |
|
} |
| 816 |
|
} |
| 817 |
|
} |
| 818 |
|
|
| 819 |
|
/* |
| 820 |
|
* If the insertion point should be displayed, then draw a special |
| 821 |
|
* background for the cursor before drawing the text. Note: if |
| 822 |
|
* we're the cursor item but the cursor is turned off, then redraw |
| 823 |
|
* background over the area of the cursor. This guarantees that |
| 824 |
|
* the selection won't make the cursor invisible on mono displays, |
| 825 |
|
* where both are drawn in the same color. |
| 826 |
|
*/ |
| 827 |
|
|
| 828 |
|
if ((textInfoPtr->focusItemPtr == itemPtr) && (textInfoPtr->gotFocus)) { |
| 829 |
|
if (Tk_CharBbox(textPtr->textLayout, textPtr->insertPos, |
| 830 |
|
&x, &y, NULL, &height)) { |
| 831 |
|
Tk_CanvasDrawableCoords(canvas, |
| 832 |
|
(double) (textPtr->leftEdge + x |
| 833 |
|
- (textInfoPtr->insertWidth / 2)), |
| 834 |
|
(double) (textPtr->header.y1 + y), |
| 835 |
|
&drawableX, &drawableY); |
| 836 |
|
if (textInfoPtr->cursorOn) { |
| 837 |
|
Tk_Fill3DRectangle(Tk_CanvasTkwin(canvas), drawable, |
| 838 |
|
textInfoPtr->insertBorder, |
| 839 |
|
drawableX, drawableY, |
| 840 |
|
textInfoPtr->insertWidth, height, |
| 841 |
|
textInfoPtr->insertBorderWidth, TK_RELIEF_RAISED); |
| 842 |
|
} else if (textPtr->cursorOffGC != None) { |
| 843 |
|
/* |
| 844 |
|
* Redraw the background over the area of the cursor, |
| 845 |
|
* even though the cursor is turned off. This |
| 846 |
|
* guarantees that the selection won't make the cursor |
| 847 |
|
* invisible on mono displays, where both may be drawn |
| 848 |
|
* in the same color. |
| 849 |
|
*/ |
| 850 |
|
|
| 851 |
|
XFillRectangle(display, drawable, textPtr->cursorOffGC, |
| 852 |
|
drawableX, drawableY, |
| 853 |
|
(unsigned) textInfoPtr->insertWidth, |
| 854 |
|
(unsigned) height); |
| 855 |
|
} |
| 856 |
|
} |
| 857 |
|
} |
| 858 |
|
|
| 859 |
|
|
| 860 |
|
/* |
| 861 |
|
* Display the text in two pieces: draw the entire text item, then |
| 862 |
|
* draw the selected text on top of it. The selected text then |
| 863 |
|
* will only need to be drawn if it has different attributes (such |
| 864 |
|
* as foreground color) than regular text. |
| 865 |
|
*/ |
| 866 |
|
|
| 867 |
|
Tk_CanvasDrawableCoords(canvas, (double) textPtr->leftEdge, |
| 868 |
|
(double) textPtr->header.y1, &drawableX, &drawableY); |
| 869 |
|
Tk_DrawTextLayout(display, drawable, textPtr->gc, textPtr->textLayout, |
| 870 |
|
drawableX, drawableY, 0, -1); |
| 871 |
|
|
| 872 |
|
if ((selFirstChar >= 0) && (textPtr->selTextGC != textPtr->gc)) { |
| 873 |
|
Tk_DrawTextLayout(display, drawable, textPtr->selTextGC, |
| 874 |
|
textPtr->textLayout, drawableX, drawableY, selFirstChar, |
| 875 |
|
selLastChar + 1); |
| 876 |
|
} |
| 877 |
|
|
| 878 |
|
if (stipple != None) { |
| 879 |
|
XSetTSOrigin(display, textPtr->gc, 0, 0); |
| 880 |
|
} |
| 881 |
|
} |
| 882 |
|
|
| 883 |
|
/* |
| 884 |
|
*-------------------------------------------------------------- |
| 885 |
|
* |
| 886 |
|
* TextInsert -- |
| 887 |
|
* |
| 888 |
|
* Insert characters into a text item at a given position. |
| 889 |
|
* |
| 890 |
|
* Results: |
| 891 |
|
* None. |
| 892 |
|
* |
| 893 |
|
* Side effects: |
| 894 |
|
* The text in the given item is modified. The cursor and |
| 895 |
|
* selection positions are also modified to reflect the |
| 896 |
|
* insertion. |
| 897 |
|
* |
| 898 |
|
*-------------------------------------------------------------- |
| 899 |
|
*/ |
| 900 |
|
|
| 901 |
|
static void |
| 902 |
|
TextInsert(canvas, itemPtr, index, string) |
| 903 |
|
Tk_Canvas canvas; /* Canvas containing text item. */ |
| 904 |
|
Tk_Item *itemPtr; /* Text item to be modified. */ |
| 905 |
|
int index; /* Character index before which string is |
| 906 |
|
* to be inserted. */ |
| 907 |
|
char *string; /* New characters to be inserted. */ |
| 908 |
|
{ |
| 909 |
|
TextItem *textPtr = (TextItem *) itemPtr; |
| 910 |
|
int byteIndex, byteCount, charsAdded; |
| 911 |
|
char *new, *text; |
| 912 |
|
Tk_CanvasTextInfo *textInfoPtr = textPtr->textInfoPtr; |
| 913 |
|
|
| 914 |
|
string = Tcl_GetStringFromObj((Tcl_Obj *) string, &byteCount); |
| 915 |
|
|
| 916 |
|
text = textPtr->text; |
| 917 |
|
|
| 918 |
|
if (index < 0) { |
| 919 |
|
index = 0; |
| 920 |
|
} |
| 921 |
|
if (index > textPtr->numChars) { |
| 922 |
|
index = textPtr->numChars; |
| 923 |
|
} |
| 924 |
|
byteIndex = Tcl_UtfAtIndex(text, index) - text; |
| 925 |
|
byteCount = strlen(string); |
| 926 |
|
if (byteCount == 0) { |
| 927 |
|
return; |
| 928 |
|
} |
| 929 |
|
|
| 930 |
|
new = (char *) ckalloc((unsigned) textPtr->numBytes + byteCount + 1); |
| 931 |
|
memcpy(new, text, (size_t) byteIndex); |
| 932 |
|
strcpy(new + byteIndex, string); |
| 933 |
|
strcpy(new + byteIndex + byteCount, text + byteIndex); |
| 934 |
|
|
| 935 |
|
ckfree(text); |
| 936 |
|
textPtr->text = new; |
| 937 |
|
charsAdded = Tcl_NumUtfChars(string, byteCount); |
| 938 |
|
textPtr->numChars += charsAdded; |
| 939 |
|
textPtr->numBytes += byteCount; |
| 940 |
|
|
| 941 |
|
/* |
| 942 |
|
* Inserting characters invalidates indices such as those for the |
| 943 |
|
* selection and cursor. Update the indices appropriately. |
| 944 |
|
*/ |
| 945 |
|
|
| 946 |
|
if (textInfoPtr->selItemPtr == itemPtr) { |
| 947 |
|
if (textInfoPtr->selectFirst >= index) { |
| 948 |
|
textInfoPtr->selectFirst += charsAdded; |
| 949 |
|
} |
| 950 |
|
if (textInfoPtr->selectLast >= index) { |
| 951 |
|
textInfoPtr->selectLast += charsAdded; |
| 952 |
|
} |
| 953 |
|
if ((textInfoPtr->anchorItemPtr == itemPtr) |
| 954 |
|
&& (textInfoPtr->selectAnchor >= index)) { |
| 955 |
|
textInfoPtr->selectAnchor += charsAdded; |
| 956 |
|
} |
| 957 |
|
} |
| 958 |
|
if (textPtr->insertPos >= index) { |
| 959 |
|
textPtr->insertPos += charsAdded; |
| 960 |
|
} |
| 961 |
|
ComputeTextBbox(canvas, textPtr); |
| 962 |
|
} |
| 963 |
|
|
| 964 |
|
/* |
| 965 |
|
*-------------------------------------------------------------- |
| 966 |
|
* |
| 967 |
|
* TextDeleteChars -- |
| 968 |
|
* |
| 969 |
|
* Delete one or more characters from a text item. |
| 970 |
|
* |
| 971 |
|
* Results: |
| 972 |
|
* None. |
| 973 |
|
* |
| 974 |
|
* Side effects: |
| 975 |
|
* Characters between "first" and "last", inclusive, get |
| 976 |
|
* deleted from itemPtr, and things like the selection |
| 977 |
|
* position get updated. |
| 978 |
|
* |
| 979 |
|
*-------------------------------------------------------------- |
| 980 |
|
*/ |
| 981 |
|
|
| 982 |
|
static void |
| 983 |
|
TextDeleteChars(canvas, itemPtr, first, last) |
| 984 |
|
Tk_Canvas canvas; /* Canvas containing itemPtr. */ |
| 985 |
|
Tk_Item *itemPtr; /* Item in which to delete characters. */ |
| 986 |
|
int first; /* Character index of first character to |
| 987 |
|
* delete. */ |
| 988 |
|
int last; /* Character index of last character to |
| 989 |
|
* delete (inclusive). */ |
| 990 |
|
{ |
| 991 |
|
TextItem *textPtr = (TextItem *) itemPtr; |
| 992 |
|
int byteIndex, byteCount, charsRemoved; |
| 993 |
|
char *new, *text; |
| 994 |
|
Tk_CanvasTextInfo *textInfoPtr = textPtr->textInfoPtr; |
| 995 |
|
|
| 996 |
|
text = textPtr->text; |
| 997 |
|
if (first < 0) { |
| 998 |
|
first = 0; |
| 999 |
|
} |
| 1000 |
|
if (last >= textPtr->numChars) { |
| 1001 |
|
last = textPtr->numChars - 1; |
| 1002 |
|
} |
| 1003 |
|
if (first > last) { |
| 1004 |
|
return; |
| 1005 |
|
} |
| 1006 |
|
charsRemoved = last + 1 - first; |
| 1007 |
|
|
| 1008 |
|
byteIndex = Tcl_UtfAtIndex(text, first) - text; |
| 1009 |
|
byteCount = Tcl_UtfAtIndex(text + byteIndex, charsRemoved) |
| 1010 |
|
- (text + byteIndex); |
| 1011 |
|
|
| 1012 |
|
new = (char *) ckalloc((unsigned) (textPtr->numBytes + 1 - byteCount)); |
| 1013 |
|
memcpy(new, text, (size_t) byteIndex); |
| 1014 |
|
strcpy(new + byteIndex, text + byteIndex + byteCount); |
| 1015 |
|
|
| 1016 |
|
ckfree(text); |
| 1017 |
|
textPtr->text = new; |
| 1018 |
|
textPtr->numChars -= charsRemoved; |
| 1019 |
|
textPtr->numBytes -= byteCount; |
| 1020 |
|
|
| 1021 |
|
/* |
| 1022 |
|
* Update indexes for the selection and cursor to reflect the |
| 1023 |
|
* renumbering of the remaining characters. |
| 1024 |
|
*/ |
| 1025 |
|
|
| 1026 |
|
if (textInfoPtr->selItemPtr == itemPtr) { |
| 1027 |
|
if (textInfoPtr->selectFirst > first) { |
| 1028 |
|
textInfoPtr->selectFirst -= charsRemoved; |
| 1029 |
|
if (textInfoPtr->selectFirst < first) { |
| 1030 |
|
textInfoPtr->selectFirst = first; |
| 1031 |
|
} |
| 1032 |
|
} |
| 1033 |
|
if (textInfoPtr->selectLast >= first) { |
| 1034 |
|
textInfoPtr->selectLast -= charsRemoved; |
| 1035 |
|
if (textInfoPtr->selectLast < first - 1) { |
| 1036 |
|
textInfoPtr->selectLast = first - 1; |
| 1037 |
|
} |
| 1038 |
|
} |
| 1039 |
|
if (textInfoPtr->selectFirst > textInfoPtr->selectLast) { |
| 1040 |
|
textInfoPtr->selItemPtr = NULL; |
| 1041 |
|
} |
| 1042 |
|
if ((textInfoPtr->anchorItemPtr == itemPtr) |
| 1043 |
|
&& (textInfoPtr->selectAnchor > first)) { |
| 1044 |
|
textInfoPtr->selectAnchor -= charsRemoved; |
| 1045 |
|
if (textInfoPtr->selectAnchor < first) { |
| 1046 |
|
textInfoPtr->selectAnchor = first; |
| 1047 |
|
} |
| 1048 |
|
} |
| 1049 |
|
} |
| 1050 |
|
if (textPtr->insertPos > first) { |
| 1051 |
|
textPtr->insertPos -= charsRemoved; |
| 1052 |
|
if (textPtr->insertPos < first) { |
| 1053 |
|
textPtr->insertPos = first; |
| 1054 |
|
} |
| 1055 |
|
} |
| 1056 |
|
ComputeTextBbox(canvas, textPtr); |
| 1057 |
|
return; |
| 1058 |
|
} |
| 1059 |
|
|
| 1060 |
|
/* |
| 1061 |
|
*-------------------------------------------------------------- |
| 1062 |
|
* |
| 1063 |
|
* TextToPoint -- |
| 1064 |
|
* |
| 1065 |
|
* Computes the distance from a given point to a given |
| 1066 |
|
* text item, in canvas units. |
| 1067 |
|
* |
| 1068 |
|
* Results: |
| 1069 |
|
* The return value is 0 if the point whose x and y coordinates |
| 1070 |
|
* are pointPtr[0] and pointPtr[1] is inside the text item. If |
| 1071 |
|
* the point isn't inside the text item then the return value |
| 1072 |
|
* is the distance from the point to the text item. |
| 1073 |
|
* |
| 1074 |
|
* Side effects: |
| 1075 |
|
* None. |
| 1076 |
|
* |
| 1077 |
|
*-------------------------------------------------------------- |
| 1078 |
|
*/ |
| 1079 |
|
|
| 1080 |
|
static double |
| 1081 |
|
TextToPoint(canvas, itemPtr, pointPtr) |
| 1082 |
|
Tk_Canvas canvas; /* Canvas containing itemPtr. */ |
| 1083 |
|
Tk_Item *itemPtr; /* Item to check against point. */ |
| 1084 |
|
double *pointPtr; /* Pointer to x and y coordinates. */ |
| 1085 |
|
{ |
| 1086 |
|
TextItem *textPtr; |
| 1087 |
|
Tk_State state = itemPtr->state; |
| 1088 |
|
double value; |
| 1089 |
|
|
| 1090 |
|
if (state == TK_STATE_NULL) { |
| 1091 |
|
state = ((TkCanvas *)canvas)->canvas_state; |
| 1092 |
|
} |
| 1093 |
|
textPtr = (TextItem *) itemPtr; |
| 1094 |
|
value = (double) Tk_DistanceToTextLayout(textPtr->textLayout, |
| 1095 |
|
(int) pointPtr[0] - textPtr->leftEdge, |
| 1096 |
|
(int) pointPtr[1] - textPtr->header.y1); |
| 1097 |
|
|
| 1098 |
|
if ((state == TK_STATE_HIDDEN) || (textPtr->color == NULL) || |
| 1099 |
|
(textPtr->text == NULL) || (*textPtr->text == 0)) { |
| 1100 |
|
value = 1.0e36; |
| 1101 |
|
} |
| 1102 |
|
return value; |
| 1103 |
|
} |
| 1104 |
|
|
| 1105 |
|
/* |
| 1106 |
|
*-------------------------------------------------------------- |
| 1107 |
|
* |
| 1108 |
|
* TextToArea -- |
| 1109 |
|
* |
| 1110 |
|
* This procedure is called to determine whether an item |
| 1111 |
|
* lies entirely inside, entirely outside, or overlapping |
| 1112 |
|
* a given rectangle. |
| 1113 |
|
* |
| 1114 |
|
* Results: |
| 1115 |
|
* -1 is returned if the item is entirely outside the area |
| 1116 |
|
* given by rectPtr, 0 if it overlaps, and 1 if it is entirely |
| 1117 |
|
* inside the given area. |
| 1118 |
|
* |
| 1119 |
|
* Side effects: |
| 1120 |
|
* None. |
| 1121 |
|
* |
| 1122 |
|
*-------------------------------------------------------------- |
| 1123 |
|
*/ |
| 1124 |
|
|
| 1125 |
|
static int |
| 1126 |
|
TextToArea(canvas, itemPtr, rectPtr) |
| 1127 |
|
Tk_Canvas canvas; /* Canvas containing itemPtr. */ |
| 1128 |
|
Tk_Item *itemPtr; /* Item to check against rectangle. */ |
| 1129 |
|
double *rectPtr; /* Pointer to array of four coordinates |
| 1130 |
|
* (x1, y1, x2, y2) describing rectangular |
| 1131 |
|
* area. */ |
| 1132 |
|
{ |
| 1133 |
|
TextItem *textPtr; |
| 1134 |
|
Tk_State state = itemPtr->state; |
| 1135 |
|
|
| 1136 |
|
if (state == TK_STATE_NULL) { |
| 1137 |
|
state = ((TkCanvas *)canvas)->canvas_state; |
| 1138 |
|
} |
| 1139 |
|
|
| 1140 |
|
textPtr = (TextItem *) itemPtr; |
| 1141 |
|
return Tk_IntersectTextLayout(textPtr->textLayout, |
| 1142 |
|
(int) (rectPtr[0] + 0.5) - textPtr->leftEdge, |
| 1143 |
|
(int) (rectPtr[1] + 0.5) - textPtr->header.y1, |
| 1144 |
|
(int) (rectPtr[2] - rectPtr[0] + 0.5), |
| 1145 |
|
(int) (rectPtr[3] - rectPtr[1] + 0.5)); |
| 1146 |
|
} |
| 1147 |
|
|
| 1148 |
|
/* |
| 1149 |
|
*-------------------------------------------------------------- |
| 1150 |
|
* |
| 1151 |
|
* ScaleText -- |
| 1152 |
|
* |
| 1153 |
|
* This procedure is invoked to rescale a text item. |
| 1154 |
|
* |
| 1155 |
|
* Results: |
| 1156 |
|
* None. |
| 1157 |
|
* |
| 1158 |
|
* Side effects: |
| 1159 |
|
* Scales the position of the text, but not the size |
| 1160 |
|
* of the font for the text. |
| 1161 |
|
* |
| 1162 |
|
*-------------------------------------------------------------- |
| 1163 |
|
*/ |
| 1164 |
|
|
| 1165 |
|
/* ARGSUSED */ |
| 1166 |
|
static void |
| 1167 |
|
ScaleText(canvas, itemPtr, originX, originY, scaleX, scaleY) |
| 1168 |
|
Tk_Canvas canvas; /* Canvas containing rectangle. */ |
| 1169 |
|
Tk_Item *itemPtr; /* Rectangle to be scaled. */ |
| 1170 |
|
double originX, originY; /* Origin about which to scale rect. */ |
| 1171 |
|
double scaleX; /* Amount to scale in X direction. */ |
| 1172 |
|
double scaleY; /* Amount to scale in Y direction. */ |
| 1173 |
|
{ |
| 1174 |
|
TextItem *textPtr = (TextItem *) itemPtr; |
| 1175 |
|
|
| 1176 |
|
textPtr->x = originX + scaleX*(textPtr->x - originX); |
| 1177 |
|
textPtr->y = originY + scaleY*(textPtr->y - originY); |
| 1178 |
|
ComputeTextBbox(canvas, textPtr); |
| 1179 |
|
return; |
| 1180 |
|
} |
| 1181 |
|
|
| 1182 |
|
/* |
| 1183 |
|
*-------------------------------------------------------------- |
| 1184 |
|
* |
| 1185 |
|
* TranslateText -- |
| 1186 |
|
* |
| 1187 |
|
* This procedure is called to move a text item by a |
| 1188 |
|
* given amount. |
| 1189 |
|
* |
| 1190 |
|
* Results: |
| 1191 |
|
* None. |
| 1192 |
|
* |
| 1193 |
|
* Side effects: |
| 1194 |
|
* The position of the text item is offset by (xDelta, yDelta), |
| 1195 |
|
* and the bounding box is updated in the generic part of the |
| 1196 |
|
* item structure. |
| 1197 |
|
* |
| 1198 |
|
*-------------------------------------------------------------- |
| 1199 |
|
*/ |
| 1200 |
|
|
| 1201 |
|
static void |
| 1202 |
|
TranslateText(canvas, itemPtr, deltaX, deltaY) |
| 1203 |
|
Tk_Canvas canvas; /* Canvas containing item. */ |
| 1204 |
|
Tk_Item *itemPtr; /* Item that is being moved. */ |
| 1205 |
|
double deltaX, deltaY; /* Amount by which item is to be moved. */ |
| 1206 |
|
{ |
| 1207 |
|
TextItem *textPtr = (TextItem *) itemPtr; |
| 1208 |
|
|
| 1209 |
|
textPtr->x += deltaX; |
| 1210 |
|
textPtr->y += deltaY; |
| 1211 |
|
ComputeTextBbox(canvas, textPtr); |
| 1212 |
|
} |
| 1213 |
|
|
| 1214 |
|
/* |
| 1215 |
|
*-------------------------------------------------------------- |
| 1216 |
|
* |
| 1217 |
|
* GetTextIndex -- |
| 1218 |
|
* |
| 1219 |
|
* Parse an index into a text item and return either its value |
| 1220 |
|
* or an error. |
| 1221 |
|
* |
| 1222 |
|
* Results: |
| 1223 |
|
* A standard Tcl result. If all went well, then *indexPtr is |
| 1224 |
|
* filled in with the index (into itemPtr) corresponding to |
| 1225 |
|
* string. Otherwise an error message is left in |
| 1226 |
|
* the interp's result. |
| 1227 |
|
* |
| 1228 |
|
* Side effects: |
| 1229 |
|
* None. |
| 1230 |
|
* |
| 1231 |
|
*-------------------------------------------------------------- |
| 1232 |
|
*/ |
| 1233 |
|
|
| 1234 |
|
static int |
| 1235 |
|
GetTextIndex(interp, canvas, itemPtr, obj, indexPtr) |
| 1236 |
|
Tcl_Interp *interp; /* Used for error reporting. */ |
| 1237 |
|
Tk_Canvas canvas; /* Canvas containing item. */ |
| 1238 |
|
Tk_Item *itemPtr; /* Item for which the index is being |
| 1239 |
|
* specified. */ |
| 1240 |
|
Tcl_Obj *obj; /* Specification of a particular character |
| 1241 |
|
* in itemPtr's text. */ |
| 1242 |
|
int *indexPtr; /* Where to store converted character |
| 1243 |
|
* index. */ |
| 1244 |
|
{ |
| 1245 |
|
TextItem *textPtr = (TextItem *) itemPtr; |
| 1246 |
|
size_t length; |
| 1247 |
|
int c; |
| 1248 |
|
TkCanvas *canvasPtr = (TkCanvas *) canvas; |
| 1249 |
|
Tk_CanvasTextInfo *textInfoPtr = textPtr->textInfoPtr; |
| 1250 |
|
char *string = Tcl_GetStringFromObj(obj, (int *) &length); |
| 1251 |
|
|
| 1252 |
|
c = string[0]; |
| 1253 |
|
length = strlen(string); |
| 1254 |
|
|
| 1255 |
|
if ((c == 'e') && (strncmp(string, "end", length) == 0)) { |
| 1256 |
|
*indexPtr = textPtr->numChars; |
| 1257 |
|
} else if ((c == 'i') && (strncmp(string, "insert", length) == 0)) { |
| 1258 |
|
*indexPtr = textPtr->insertPos; |
| 1259 |
|
} else if ((c == 's') && (strncmp(string, "sel.first", length) == 0) |
| 1260 |
|
&& (length >= 5)) { |
| 1261 |
|
if (textInfoPtr->selItemPtr != itemPtr) { |
| 1262 |
|
Tcl_SetResult(interp, "selection isn't in item", TCL_STATIC); |
| 1263 |
|
return TCL_ERROR; |
| 1264 |
|
} |
| 1265 |
|
*indexPtr = textInfoPtr->selectFirst; |
| 1266 |
|
} else if ((c == 's') && (strncmp(string, "sel.last", length) == 0) |
| 1267 |
|
&& (length >= 5)) { |
| 1268 |
|
if (textInfoPtr->selItemPtr != itemPtr) { |
| 1269 |
|
Tcl_SetResult(interp, "selection isn't in item", TCL_STATIC); |
| 1270 |
|
return TCL_ERROR; |
| 1271 |
|
} |
| 1272 |
|
*indexPtr = textInfoPtr->selectLast; |
| 1273 |
|
} else if (c == '@') { |
| 1274 |
|
int x, y; |
| 1275 |
|
double tmp; |
| 1276 |
|
char *end, *p; |
| 1277 |
|
|
| 1278 |
|
p = string+1; |
| 1279 |
|
tmp = strtod(p, &end); |
| 1280 |
|
if ((end == p) || (*end != ',')) { |
| 1281 |
|
goto badIndex; |
| 1282 |
|
} |
| 1283 |
|
x = (int) ((tmp < 0) ? tmp - 0.5 : tmp + 0.5); |
| 1284 |
|
p = end+1; |
| 1285 |
|
tmp = strtod(p, &end); |
| 1286 |
|
if ((end == p) || (*end != 0)) { |
| 1287 |
|
goto badIndex; |
| 1288 |
|
} |
| 1289 |
|
y = (int) ((tmp < 0) ? tmp - 0.5 : tmp + 0.5); |
| 1290 |
|
*indexPtr = Tk_PointToChar(textPtr->textLayout, |
| 1291 |
|
x + canvasPtr->scrollX1 - textPtr->leftEdge, |
| 1292 |
|
y + canvasPtr->scrollY1 - textPtr->header.y1); |
| 1293 |
|
} else if (Tcl_GetIntFromObj((Tcl_Interp *)NULL, obj, indexPtr) == TCL_OK) { |
| 1294 |
|
if (*indexPtr < 0){ |
| 1295 |
|
*indexPtr = 0; |
| 1296 |
|
} else if (*indexPtr > textPtr->numChars) { |
| 1297 |
|
*indexPtr = textPtr->numChars; |
| 1298 |
|
} |
| 1299 |
|
} else { |
| 1300 |
|
/* |
| 1301 |
|
* Some of the paths here leave messages in the interp's result, |
| 1302 |
|
* so we have to clear it out before storing our own message. |
| 1303 |
|
*/ |
| 1304 |
|
|
| 1305 |
|
badIndex: |
| 1306 |
|
Tcl_SetResult(interp, (char *) NULL, TCL_STATIC); |
| 1307 |
|
Tcl_AppendResult(interp, "bad index \"", string, "\"", |
| 1308 |
|
(char *) NULL); |
| 1309 |
|
return TCL_ERROR; |
| 1310 |
|
} |
| 1311 |
|
return TCL_OK; |
| 1312 |
|
} |
| 1313 |
|
|
| 1314 |
|
/* |
| 1315 |
|
*-------------------------------------------------------------- |
| 1316 |
|
* |
| 1317 |
|
* SetTextCursor -- |
| 1318 |
|
* |
| 1319 |
|
* Set the position of the insertion cursor in this item. |
| 1320 |
|
* |
| 1321 |
|
* Results: |
| 1322 |
|
* None. |
| 1323 |
|
* |
| 1324 |
|
* Side effects: |
| 1325 |
|
* The cursor position will change. |
| 1326 |
|
* |
| 1327 |
|
*-------------------------------------------------------------- |
| 1328 |
|
*/ |
| 1329 |
|
|
| 1330 |
|
/* ARGSUSED */ |
| 1331 |
|
static void |
| 1332 |
|
SetTextCursor(canvas, itemPtr, index) |
| 1333 |
|
Tk_Canvas canvas; /* Record describing canvas widget. */ |
| 1334 |
|
Tk_Item *itemPtr; /* Text item in which cursor position is to |
| 1335 |
|
* be set. */ |
| 1336 |
|
int index; /* Character index of character just before |
| 1337 |
|
* which cursor is to be positioned. */ |
| 1338 |
|
{ |
| 1339 |
|
TextItem *textPtr = (TextItem *) itemPtr; |
| 1340 |
|
|
| 1341 |
|
if (index < 0) { |
| 1342 |
|
textPtr->insertPos = 0; |
| 1343 |
|
} else if (index > textPtr->numChars) { |
| 1344 |
|
textPtr->insertPos = textPtr->numChars; |
| 1345 |
|
} else { |
| 1346 |
|
textPtr->insertPos = index; |
| 1347 |
|
} |
| 1348 |
|
} |
| 1349 |
|
|
| 1350 |
|
/* |
| 1351 |
|
*-------------------------------------------------------------- |
| 1352 |
|
* |
| 1353 |
|
* GetSelText -- |
| 1354 |
|
* |
| 1355 |
|
* This procedure is invoked to return the selected portion |
| 1356 |
|
* of a text item. It is only called when this item has |
| 1357 |
|
* the selection. |
| 1358 |
|
* |
| 1359 |
|
* Results: |
| 1360 |
|
* The return value is the number of non-NULL bytes stored |
| 1361 |
|
* at buffer. Buffer is filled (or partially filled) with a |
| 1362 |
|
* NULL-terminated string containing part or all of the selection, |
| 1363 |
|
* as given by offset and maxBytes. |
| 1364 |
|
* |
| 1365 |
|
* Side effects: |
| 1366 |
|
* None. |
| 1367 |
|
* |
| 1368 |
|
*-------------------------------------------------------------- |
| 1369 |
|
*/ |
| 1370 |
|
|
| 1371 |
|
static int |
| 1372 |
|
GetSelText(canvas, itemPtr, offset, buffer, maxBytes) |
| 1373 |
|
Tk_Canvas canvas; /* Canvas containing selection. */ |
| 1374 |
|
Tk_Item *itemPtr; /* Text item containing selection. */ |
| 1375 |
|
int offset; /* Byte offset within selection of first |
| 1376 |
|
* character to be returned. */ |
| 1377 |
|
char *buffer; /* Location in which to place selection. */ |
| 1378 |
|
int maxBytes; /* Maximum number of bytes to place at |
| 1379 |
|
* buffer, not including terminating NULL |
| 1380 |
|
* character. */ |
| 1381 |
|
{ |
| 1382 |
|
TextItem *textPtr = (TextItem *) itemPtr; |
| 1383 |
|
int byteCount; |
| 1384 |
|
char *text, *selStart, *selEnd; |
| 1385 |
|
Tk_CanvasTextInfo *textInfoPtr = textPtr->textInfoPtr; |
| 1386 |
|
|
| 1387 |
|
if ((textInfoPtr->selectFirst < 0) || |
| 1388 |
|
(textInfoPtr->selectFirst > textInfoPtr->selectLast)) { |
| 1389 |
|
return 0; |
| 1390 |
|
} |
| 1391 |
|
text = textPtr->text; |
| 1392 |
|
selStart = Tcl_UtfAtIndex(text, textInfoPtr->selectFirst); |
| 1393 |
|
selEnd = Tcl_UtfAtIndex(selStart, |
| 1394 |
|
textInfoPtr->selectLast + 1 - textInfoPtr->selectFirst); |
| 1395 |
|
byteCount = selEnd - selStart - offset; |
| 1396 |
|
if (byteCount > maxBytes) { |
| 1397 |
|
byteCount = maxBytes; |
| 1398 |
|
} |
| 1399 |
|
if (byteCount <= 0) { |
| 1400 |
|
return 0; |
| 1401 |
|
} |
| 1402 |
|
memcpy(buffer, selStart + offset, (size_t) byteCount); |
| 1403 |
|
buffer[byteCount] = '\0'; |
| 1404 |
|
return byteCount; |
| 1405 |
|
} |
| 1406 |
|
|
| 1407 |
|
/* |
| 1408 |
|
*-------------------------------------------------------------- |
| 1409 |
|
* |
| 1410 |
|
* TextToPostscript -- |
| 1411 |
|
* |
| 1412 |
|
* This procedure is called to generate Postscript for |
| 1413 |
|
* text items. |
| 1414 |
|
* |
| 1415 |
|
* Results: |
| 1416 |
|
* The return value is a standard Tcl result. If an error |
| 1417 |
|
* occurs in generating Postscript then an error message is |
| 1418 |
|
* left in the interp's result, replacing whatever used |
| 1419 |
|
* to be there. If no error occurs, then Postscript for the |
| 1420 |
|
* item is appended to the result. |
| 1421 |
|
* |
| 1422 |
|
* Side effects: |
| 1423 |
|
* None. |
| 1424 |
|
* |
| 1425 |
|
*-------------------------------------------------------------- |
| 1426 |
|
*/ |
| 1427 |
|
|
| 1428 |
|
static int |
| 1429 |
|
TextToPostscript(interp, canvas, itemPtr, prepass) |
| 1430 |
|
Tcl_Interp *interp; /* Leave Postscript or error message here. */ |
| 1431 |
|
Tk_Canvas canvas; /* Information about overall canvas. */ |
| 1432 |
|
Tk_Item *itemPtr; /* Item for which Postscript is wanted. */ |
| 1433 |
|
int prepass; /* 1 means this is a prepass to collect |
| 1434 |
|
* font information; 0 means final Postscript |
| 1435 |
|
* is being created. */ |
| 1436 |
|
{ |
| 1437 |
|
TextItem *textPtr = (TextItem *) itemPtr; |
| 1438 |
|
int x, y; |
| 1439 |
|
Tk_FontMetrics fm; |
| 1440 |
|
char *justify; |
| 1441 |
|
char buffer[500]; |
| 1442 |
|
XColor *color; |
| 1443 |
|
Pixmap stipple; |
| 1444 |
|
Tk_State state = itemPtr->state; |
| 1445 |
|
|
| 1446 |
|
if(state == TK_STATE_NULL) { |
| 1447 |
|
state = ((TkCanvas *)canvas)->canvas_state; |
| 1448 |
|
} |
| 1449 |
|
color = textPtr->color; |
| 1450 |
|
stipple = textPtr->stipple; |
| 1451 |
|
if (state == TK_STATE_HIDDEN || textPtr->color == NULL || |
| 1452 |
|
textPtr->text == NULL || *textPtr->text == 0) { |
| 1453 |
|
return TCL_OK; |
| 1454 |
|
} else if (((TkCanvas *)canvas)->currentItemPtr == itemPtr) { |
| 1455 |
|
if (textPtr->activeColor!=NULL) { |
| 1456 |
|
color = textPtr->activeColor; |
| 1457 |
|
} |
| 1458 |
|
if (textPtr->activeStipple!=None) { |
| 1459 |
|
stipple = textPtr->activeStipple; |
| 1460 |
|
} |
| 1461 |
|
} else if (state==TK_STATE_DISABLED) { |
| 1462 |
|
if (textPtr->disabledColor!=NULL) { |
| 1463 |
|
color = textPtr->disabledColor; |
| 1464 |
|
} |
| 1465 |
|
if (textPtr->disabledStipple!=None) { |
| 1466 |
|
stipple = textPtr->disabledStipple; |
| 1467 |
|
} |
| 1468 |
|
} |
| 1469 |
|
|
| 1470 |
|
if (Tk_CanvasPsFont(interp, canvas, textPtr->tkfont) != TCL_OK) { |
| 1471 |
|
return TCL_ERROR; |
| 1472 |
|
} |
| 1473 |
|
if (prepass != 0) { |
| 1474 |
|
return TCL_OK; |
| 1475 |
|
} |
| 1476 |
|
if (Tk_CanvasPsColor(interp, canvas, color) != TCL_OK) { |
| 1477 |
|
return TCL_ERROR; |
| 1478 |
|
} |
| 1479 |
|
if (stipple != None) { |
| 1480 |
|
Tcl_AppendResult(interp, "/StippleText {\n ", |
| 1481 |
|
(char *) NULL); |
| 1482 |
|
Tk_CanvasPsStipple(interp, canvas, stipple); |
| 1483 |
|
Tcl_AppendResult(interp, "} bind def\n", (char *) NULL); |
| 1484 |
|
} |
| 1485 |
|
|
| 1486 |
|
sprintf(buffer, "%.15g %.15g [\n", textPtr->x, |
| 1487 |
|
Tk_CanvasPsY(canvas, textPtr->y)); |
| 1488 |
|
Tcl_AppendResult(interp, buffer, (char *) NULL); |
| 1489 |
|
|
| 1490 |
|
Tk_TextLayoutToPostscript(interp, textPtr->textLayout); |
| 1491 |
|
|
| 1492 |
|
x = 0; y = 0; justify = NULL; /* lint. */ |
| 1493 |
|
switch (textPtr->anchor) { |
| 1494 |
|
case TK_ANCHOR_NW: x = 0; y = 0; break; |
| 1495 |
|
case TK_ANCHOR_N: x = 1; y = 0; break; |
| 1496 |
|
case TK_ANCHOR_NE: x = 2; y = 0; break; |
| 1497 |
|
case TK_ANCHOR_E: x = 2; y = 1; break; |
| 1498 |
|
case TK_ANCHOR_SE: x = 2; y = 2; break; |
| 1499 |
|
case TK_ANCHOR_S: x = 1; y = 2; break; |
| 1500 |
|
case TK_ANCHOR_SW: x = 0; y = 2; break; |
| 1501 |
|
case TK_ANCHOR_W: x = 0; y = 1; break; |
| 1502 |
|
case TK_ANCHOR_CENTER: x = 1; y = 1; break; |
| 1503 |
|
} |
| 1504 |
|
switch (textPtr->justify) { |
| 1505 |
|
case TK_JUSTIFY_LEFT: justify = "0"; break; |
| 1506 |
|
case TK_JUSTIFY_CENTER: justify = "0.5";break; |
| 1507 |
|
case TK_JUSTIFY_RIGHT: justify = "1"; break; |
| 1508 |
|
} |
| 1509 |
|
|
| 1510 |
|
Tk_GetFontMetrics(textPtr->tkfont, &fm); |
| 1511 |
|
sprintf(buffer, "] %d %g %g %s %s DrawText\n", |
| 1512 |
|
fm.linespace, x / -2.0, y / 2.0, justify, |
| 1513 |
|
((stipple == None) ? "false" : "true")); |
| 1514 |
|
Tcl_AppendResult(interp, buffer, (char *) NULL); |
| 1515 |
|
|
| 1516 |
|
return TCL_OK; |
| 1517 |
|
} |
| 1518 |
|
/* $Header$ */ |
| 1519 |
|
|
| 1520 |
|
/* End of tkcanvtext.c */ |
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| 
Revision Log
| 
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