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dashley |
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/* $Header$ */ |
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/* |
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* tkCanvWind.c -- |
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* |
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* This file implements window items for canvas widgets. |
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* |
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* Copyright (c) 1992-1994 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: tkcanvwind.c,v 1.1.1.1 2001/06/13 04:58:02 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 "tkPort.h" |
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#include "tkCanvas.h" |
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/* |
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* The structure below defines the record for each window item. |
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*/ |
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typedef struct WindowItem { |
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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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double x, y; /* Coordinates of positioning point for |
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* window. */ |
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Tk_Window tkwin; /* Window associated with item. NULL means |
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* window has been destroyed. */ |
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int width; /* Width to use for window (<= 0 means use |
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* window's requested width). */ |
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int height; /* Width to use for window (<= 0 means use |
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* window's requested width). */ |
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Tk_Anchor anchor; /* Where to anchor window relative to |
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* (x,y). */ |
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Tk_Canvas canvas; /* Canvas containing this item. */ |
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} WindowItem; |
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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_ConfigSpec configSpecs[] = { |
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{TK_CONFIG_ANCHOR, "-anchor", (char *) NULL, (char *) NULL, |
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"center", Tk_Offset(WindowItem, anchor), TK_CONFIG_DONT_SET_DEFAULT}, |
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{TK_CONFIG_PIXELS, "-height", (char *) NULL, (char *) NULL, |
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"0", Tk_Offset(WindowItem, height), TK_CONFIG_DONT_SET_DEFAULT}, |
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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_CUSTOM, "-tags", (char *) NULL, (char *) NULL, |
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(char *) NULL, 0, TK_CONFIG_NULL_OK, &tagsOption}, |
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{TK_CONFIG_PIXELS, "-width", (char *) NULL, (char *) NULL, |
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"0", Tk_Offset(WindowItem, width), TK_CONFIG_DONT_SET_DEFAULT}, |
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{TK_CONFIG_WINDOW, "-window", (char *) NULL, (char *) NULL, |
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(char *) NULL, Tk_Offset(WindowItem, tkwin), TK_CONFIG_NULL_OK}, |
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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 ComputeWindowBbox _ANSI_ARGS_((Tk_Canvas canvas, |
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WindowItem *winItemPtr)); |
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static int ConfigureWinItem _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 CreateWinItem _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 DeleteWinItem _ANSI_ARGS_((Tk_Canvas canvas, |
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Tk_Item *itemPtr, Display *display)); |
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static void DisplayWinItem _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 void ScaleWinItem _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 TranslateWinItem _ANSI_ARGS_((Tk_Canvas canvas, |
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Tk_Item *itemPtr, double deltaX, double deltaY)); |
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static int WinItemCoords _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[])); |
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static void WinItemLostSlaveProc _ANSI_ARGS_(( |
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ClientData clientData, Tk_Window tkwin)); |
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static void WinItemRequestProc _ANSI_ARGS_((ClientData clientData, |
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Tk_Window tkwin)); |
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static void WinItemStructureProc _ANSI_ARGS_(( |
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ClientData clientData, XEvent *eventPtr)); |
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static int WinItemToArea _ANSI_ARGS_((Tk_Canvas canvas, |
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Tk_Item *itemPtr, double *rectPtr)); |
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static int WinItemToPostscript _ANSI_ARGS_((Tcl_Interp *interp, |
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Tk_Canvas canvas, Tk_Item *itemPtr, int prepass)); |
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static double WinItemToPoint _ANSI_ARGS_((Tk_Canvas canvas, |
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Tk_Item *itemPtr, double *pointPtr)); |
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#ifdef X_GetImage |
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static int xerrorhandler _ANSI_ARGS_((ClientData clientData, |
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XErrorEvent *e)); |
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#endif |
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static int CanvasPsWindow _ANSI_ARGS_((Tcl_Interp *interp, |
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Tk_Window tkwin, Tk_Canvas canvas, double x, |
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double y, int width, int height)); |
117 |
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118 |
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/* |
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* The structure below defines the window item type by means of procedures |
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* that can be invoked by generic item code. |
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*/ |
122 |
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123 |
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Tk_ItemType tkWindowType = { |
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"window", /* name */ |
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sizeof(WindowItem), /* itemSize */ |
126 |
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CreateWinItem, /* createProc */ |
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configSpecs, /* configSpecs */ |
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ConfigureWinItem, /* configureProc */ |
129 |
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WinItemCoords, /* coordProc */ |
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DeleteWinItem, /* deleteProc */ |
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DisplayWinItem, /* displayProc */ |
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1|TK_CONFIG_OBJS, /* flags */ |
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WinItemToPoint, /* pointProc */ |
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WinItemToArea, /* areaProc */ |
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WinItemToPostscript, /* postscriptProc */ |
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ScaleWinItem, /* scaleProc */ |
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TranslateWinItem, /* translateProc */ |
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(Tk_ItemIndexProc *) NULL, /* indexProc */ |
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(Tk_ItemCursorProc *) NULL, /* cursorProc */ |
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(Tk_ItemSelectionProc *) NULL, /* selectionProc */ |
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(Tk_ItemInsertProc *) NULL, /* insertProc */ |
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(Tk_ItemDCharsProc *) NULL, /* dTextProc */ |
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(Tk_ItemType *) NULL, /* nextPtr */ |
144 |
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}; |
145 |
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146 |
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147 |
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/* |
148 |
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* The structure below defines the official type record for the |
149 |
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* placer: |
150 |
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*/ |
151 |
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152 |
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static Tk_GeomMgr canvasGeomType = { |
153 |
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"canvas", /* name */ |
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WinItemRequestProc, /* requestProc */ |
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WinItemLostSlaveProc, /* lostSlaveProc */ |
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}; |
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158 |
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/* |
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*-------------------------------------------------------------- |
160 |
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* |
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* CreateWinItem -- |
162 |
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* |
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* This procedure is invoked to create a new window |
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* item 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 |
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* left uninitialized, so it can be safely freed by the |
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* caller. |
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* |
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* Side effects: |
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* A new window item is created. |
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* |
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*-------------------------------------------------------------- |
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*/ |
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179 |
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static int |
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CreateWinItem(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 |
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* has been initialized by caller. */ |
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int argc; /* Number of arguments in argv. */ |
186 |
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Tcl_Obj *CONST argv[]; /* Arguments describing window. */ |
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{ |
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WindowItem *winItemPtr = (WindowItem *) itemPtr; |
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int i; |
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191 |
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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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} |
202 |
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203 |
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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?\"", |
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(char *) NULL); |
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return TCL_ERROR; |
209 |
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} |
210 |
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/* |
212 |
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* Initialize item's record. |
213 |
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*/ |
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215 |
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winItemPtr->tkwin = NULL; |
216 |
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winItemPtr->width = 0; |
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winItemPtr->height = 0; |
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winItemPtr->anchor = TK_ANCHOR_CENTER; |
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winItemPtr->canvas = canvas; |
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/* |
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* Process the arguments to fill in the item record. |
223 |
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*/ |
224 |
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225 |
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if ((WinItemCoords(interp, canvas, itemPtr, i, argv) != TCL_OK)) { |
226 |
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goto error; |
227 |
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} |
228 |
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if (ConfigureWinItem(interp, canvas, itemPtr, argc-i, argv+i, 0) == TCL_OK) { |
229 |
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return TCL_OK; |
230 |
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} |
231 |
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232 |
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error: |
233 |
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DeleteWinItem(canvas, itemPtr, Tk_Display(Tk_CanvasTkwin(canvas))); |
234 |
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return TCL_ERROR; |
235 |
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} |
236 |
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237 |
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/* |
238 |
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*-------------------------------------------------------------- |
239 |
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* |
240 |
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* WinItemCoords -- |
241 |
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* |
242 |
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* This procedure is invoked to process the "coords" widget |
243 |
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* command on window items. See the user documentation for |
244 |
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* details on what it does. |
245 |
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* |
246 |
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* Results: |
247 |
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* Returns TCL_OK or TCL_ERROR, and sets the interp's result. |
248 |
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* |
249 |
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* Side effects: |
250 |
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* The coordinates for the given item may be changed. |
251 |
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* |
252 |
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*-------------------------------------------------------------- |
253 |
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*/ |
254 |
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255 |
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static int |
256 |
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WinItemCoords(interp, canvas, itemPtr, argc, argv) |
257 |
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Tcl_Interp *interp; /* Used for error reporting. */ |
258 |
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Tk_Canvas canvas; /* Canvas containing item. */ |
259 |
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Tk_Item *itemPtr; /* Item whose coordinates are to be |
260 |
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* read or modified. */ |
261 |
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int argc; /* Number of coordinates supplied in |
262 |
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* argv. */ |
263 |
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Tcl_Obj *CONST argv[]; /* Array of coordinates: x1, y1, |
264 |
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* x2, y2, ... */ |
265 |
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{ |
266 |
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WindowItem *winItemPtr = (WindowItem *) itemPtr; |
267 |
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268 |
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if (argc == 0) { |
269 |
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Tcl_Obj *obj = Tcl_NewObj(); |
270 |
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Tcl_Obj *subobj = Tcl_NewDoubleObj(winItemPtr->x); |
271 |
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Tcl_ListObjAppendElement(interp, obj, subobj); |
272 |
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subobj = Tcl_NewDoubleObj(winItemPtr->y); |
273 |
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Tcl_ListObjAppendElement(interp, obj, subobj); |
274 |
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Tcl_SetObjResult(interp, obj); |
275 |
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} else if (argc < 3) { |
276 |
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if (argc==1) { |
277 |
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if (Tcl_ListObjGetElements(interp, argv[0], &argc, |
278 |
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(Tcl_Obj ***) &argv) != TCL_OK) { |
279 |
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return TCL_ERROR; |
280 |
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} else if (argc != 2) { |
281 |
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char buf[64 + TCL_INTEGER_SPACE]; |
282 |
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283 |
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sprintf(buf, "wrong # coordinates: expected 2, got %d", argc); |
284 |
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Tcl_SetResult(interp, buf, TCL_VOLATILE); |
285 |
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return TCL_ERROR; |
286 |
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} |
287 |
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} |
288 |
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if ((Tk_CanvasGetCoordFromObj(interp, canvas, argv[0], &winItemPtr->x) |
289 |
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!= TCL_OK) || (Tk_CanvasGetCoordFromObj(interp, canvas, argv[1], |
290 |
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&winItemPtr->y) != TCL_OK)) { |
291 |
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return TCL_ERROR; |
292 |
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} |
293 |
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ComputeWindowBbox(canvas, winItemPtr); |
294 |
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} else { |
295 |
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char buf[64 + TCL_INTEGER_SPACE]; |
296 |
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297 |
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sprintf(buf, "wrong # coordinates: expected 0 or 2, got %d", argc); |
298 |
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Tcl_SetResult(interp, buf, TCL_VOLATILE); |
299 |
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return TCL_ERROR; |
300 |
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} |
301 |
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return TCL_OK; |
302 |
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} |
303 |
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|
304 |
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/* |
305 |
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*-------------------------------------------------------------- |
306 |
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* |
307 |
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* ConfigureWinItem -- |
308 |
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* |
309 |
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* This procedure is invoked to configure various aspects |
310 |
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* of a window item, such as its anchor position. |
311 |
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* |
312 |
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* Results: |
313 |
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* A standard Tcl result code. If an error occurs, then |
314 |
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* an error message is left in the interp's result. |
315 |
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* |
316 |
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* Side effects: |
317 |
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* Configuration information may be set for itemPtr. |
318 |
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* |
319 |
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*-------------------------------------------------------------- |
320 |
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*/ |
321 |
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|
322 |
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static int |
323 |
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ConfigureWinItem(interp, canvas, itemPtr, argc, argv, flags) |
324 |
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Tcl_Interp *interp; /* Used for error reporting. */ |
325 |
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Tk_Canvas canvas; /* Canvas containing itemPtr. */ |
326 |
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Tk_Item *itemPtr; /* Window item to reconfigure. */ |
327 |
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int argc; /* Number of elements in argv. */ |
328 |
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Tcl_Obj *CONST argv[]; /* Arguments describing things to configure. */ |
329 |
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int flags; /* Flags to pass to Tk_ConfigureWidget. */ |
330 |
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{ |
331 |
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WindowItem *winItemPtr = (WindowItem *) itemPtr; |
332 |
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Tk_Window oldWindow; |
333 |
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Tk_Window canvasTkwin; |
334 |
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|
335 |
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oldWindow = winItemPtr->tkwin; |
336 |
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canvasTkwin = Tk_CanvasTkwin(canvas); |
337 |
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if (Tk_ConfigureWidget(interp, canvasTkwin, configSpecs, argc, (char **) argv, |
338 |
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(char *) winItemPtr, flags|TK_CONFIG_OBJS) != TCL_OK) { |
339 |
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return TCL_ERROR; |
340 |
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} |
341 |
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|
342 |
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/* |
343 |
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* A few of the options require additional processing. |
344 |
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*/ |
345 |
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|
346 |
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if (oldWindow != winItemPtr->tkwin) { |
347 |
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if (oldWindow != NULL) { |
348 |
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Tk_DeleteEventHandler(oldWindow, StructureNotifyMask, |
349 |
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WinItemStructureProc, (ClientData) winItemPtr); |
350 |
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Tk_ManageGeometry(oldWindow, (Tk_GeomMgr *) NULL, |
351 |
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(ClientData) NULL); |
352 |
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Tk_UnmaintainGeometry(oldWindow, canvasTkwin); |
353 |
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Tk_UnmapWindow(oldWindow); |
354 |
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} |
355 |
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if (winItemPtr->tkwin != NULL) { |
356 |
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Tk_Window ancestor, parent; |
357 |
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|
358 |
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/* |
359 |
|
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* Make sure that the canvas is either the parent of the |
360 |
|
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* window associated with the item or a descendant of that |
361 |
|
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* parent. Also, don't allow a top-level window to be |
362 |
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* managed inside a canvas. |
363 |
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*/ |
364 |
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|
365 |
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parent = Tk_Parent(winItemPtr->tkwin); |
366 |
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for (ancestor = canvasTkwin; ; |
367 |
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ancestor = Tk_Parent(ancestor)) { |
368 |
|
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if (ancestor == parent) { |
369 |
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break; |
370 |
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} |
371 |
|
|
if (((Tk_FakeWin *) (ancestor))->flags & TK_TOP_LEVEL) { |
372 |
|
|
badWindow: |
373 |
|
|
Tcl_AppendResult(interp, "can't use ", |
374 |
|
|
Tk_PathName(winItemPtr->tkwin), |
375 |
|
|
" in a window item of this canvas", (char *) NULL); |
376 |
|
|
winItemPtr->tkwin = NULL; |
377 |
|
|
return TCL_ERROR; |
378 |
|
|
} |
379 |
|
|
} |
380 |
|
|
if (((Tk_FakeWin *) (winItemPtr->tkwin))->flags & TK_TOP_LEVEL) { |
381 |
|
|
goto badWindow; |
382 |
|
|
} |
383 |
|
|
if (winItemPtr->tkwin == canvasTkwin) { |
384 |
|
|
goto badWindow; |
385 |
|
|
} |
386 |
|
|
Tk_CreateEventHandler(winItemPtr->tkwin, StructureNotifyMask, |
387 |
|
|
WinItemStructureProc, (ClientData) winItemPtr); |
388 |
|
|
Tk_ManageGeometry(winItemPtr->tkwin, &canvasGeomType, |
389 |
|
|
(ClientData) winItemPtr); |
390 |
|
|
} |
391 |
|
|
} |
392 |
|
|
|
393 |
|
|
ComputeWindowBbox(canvas, winItemPtr); |
394 |
|
|
|
395 |
|
|
return TCL_OK; |
396 |
|
|
} |
397 |
|
|
|
398 |
|
|
/* |
399 |
|
|
*-------------------------------------------------------------- |
400 |
|
|
* |
401 |
|
|
* DeleteWinItem -- |
402 |
|
|
* |
403 |
|
|
* This procedure is called to clean up the data structure |
404 |
|
|
* associated with a window item. |
405 |
|
|
* |
406 |
|
|
* Results: |
407 |
|
|
* None. |
408 |
|
|
* |
409 |
|
|
* Side effects: |
410 |
|
|
* Resources associated with itemPtr are released. |
411 |
|
|
* |
412 |
|
|
*-------------------------------------------------------------- |
413 |
|
|
*/ |
414 |
|
|
|
415 |
|
|
static void |
416 |
|
|
DeleteWinItem(canvas, itemPtr, display) |
417 |
|
|
Tk_Canvas canvas; /* Overall info about widget. */ |
418 |
|
|
Tk_Item *itemPtr; /* Item that is being deleted. */ |
419 |
|
|
Display *display; /* Display containing window for |
420 |
|
|
* canvas. */ |
421 |
|
|
{ |
422 |
|
|
WindowItem *winItemPtr = (WindowItem *) itemPtr; |
423 |
|
|
Tk_Window canvasTkwin = Tk_CanvasTkwin(canvas); |
424 |
|
|
|
425 |
|
|
if (winItemPtr->tkwin != NULL) { |
426 |
|
|
Tk_DeleteEventHandler(winItemPtr->tkwin, StructureNotifyMask, |
427 |
|
|
WinItemStructureProc, (ClientData) winItemPtr); |
428 |
|
|
Tk_ManageGeometry(winItemPtr->tkwin, (Tk_GeomMgr *) NULL, |
429 |
|
|
(ClientData) NULL); |
430 |
|
|
if (canvasTkwin != Tk_Parent(winItemPtr->tkwin)) { |
431 |
|
|
Tk_UnmaintainGeometry(winItemPtr->tkwin, canvasTkwin); |
432 |
|
|
} |
433 |
|
|
Tk_UnmapWindow(winItemPtr->tkwin); |
434 |
|
|
} |
435 |
|
|
} |
436 |
|
|
|
437 |
|
|
/* |
438 |
|
|
*-------------------------------------------------------------- |
439 |
|
|
* |
440 |
|
|
* ComputeWindowBbox -- |
441 |
|
|
* |
442 |
|
|
* This procedure is invoked to compute the bounding box of |
443 |
|
|
* all the pixels that may be drawn as part of a window item. |
444 |
|
|
* This procedure is where the child window's placement is |
445 |
|
|
* computed. |
446 |
|
|
* |
447 |
|
|
* Results: |
448 |
|
|
* None. |
449 |
|
|
* |
450 |
|
|
* Side effects: |
451 |
|
|
* The fields x1, y1, x2, and y2 are updated in the header |
452 |
|
|
* for itemPtr. |
453 |
|
|
* |
454 |
|
|
*-------------------------------------------------------------- |
455 |
|
|
*/ |
456 |
|
|
|
457 |
|
|
static void |
458 |
|
|
ComputeWindowBbox(canvas, winItemPtr) |
459 |
|
|
Tk_Canvas canvas; /* Canvas that contains item. */ |
460 |
|
|
WindowItem *winItemPtr; /* Item whose bbox is to be |
461 |
|
|
* recomputed. */ |
462 |
|
|
{ |
463 |
|
|
int width, height, x, y; |
464 |
|
|
Tk_State state = winItemPtr->header.state; |
465 |
|
|
|
466 |
|
|
x = (int) (winItemPtr->x + ((winItemPtr->x >= 0) ? 0.5 : - 0.5)); |
467 |
|
|
y = (int) (winItemPtr->y + ((winItemPtr->y >= 0) ? 0.5 : - 0.5)); |
468 |
|
|
|
469 |
|
|
if (state == TK_STATE_NULL) { |
470 |
|
|
state = ((TkCanvas *)canvas)->canvas_state; |
471 |
|
|
} |
472 |
|
|
if ((winItemPtr->tkwin == NULL) || (state == TK_STATE_HIDDEN)) { |
473 |
|
|
/* |
474 |
|
|
* There is no window for this item yet. Just give it a 1x1 |
475 |
|
|
* bounding box. Don't give it a 0x0 bounding box; there are |
476 |
|
|
* strange cases where this bounding box might be used as the |
477 |
|
|
* dimensions of the window, and 0x0 causes problems under X. |
478 |
|
|
*/ |
479 |
|
|
|
480 |
|
|
winItemPtr->header.x1 = x; |
481 |
|
|
winItemPtr->header.x2 = winItemPtr->header.x1 + 1; |
482 |
|
|
winItemPtr->header.y1 = y; |
483 |
|
|
winItemPtr->header.y2 = winItemPtr->header.y1 + 1; |
484 |
|
|
return; |
485 |
|
|
} |
486 |
|
|
|
487 |
|
|
/* |
488 |
|
|
* Compute dimensions of window. |
489 |
|
|
*/ |
490 |
|
|
|
491 |
|
|
width = winItemPtr->width; |
492 |
|
|
if (width <= 0) { |
493 |
|
|
width = Tk_ReqWidth(winItemPtr->tkwin); |
494 |
|
|
if (width <= 0) { |
495 |
|
|
width = 1; |
496 |
|
|
} |
497 |
|
|
} |
498 |
|
|
height = winItemPtr->height; |
499 |
|
|
if (height <= 0) { |
500 |
|
|
height = Tk_ReqHeight(winItemPtr->tkwin); |
501 |
|
|
if (height <= 0) { |
502 |
|
|
height = 1; |
503 |
|
|
} |
504 |
|
|
} |
505 |
|
|
|
506 |
|
|
/* |
507 |
|
|
* Compute location of window, using anchor information. |
508 |
|
|
*/ |
509 |
|
|
|
510 |
|
|
switch (winItemPtr->anchor) { |
511 |
|
|
case TK_ANCHOR_N: |
512 |
|
|
x -= width/2; |
513 |
|
|
break; |
514 |
|
|
case TK_ANCHOR_NE: |
515 |
|
|
x -= width; |
516 |
|
|
break; |
517 |
|
|
case TK_ANCHOR_E: |
518 |
|
|
x -= width; |
519 |
|
|
y -= height/2; |
520 |
|
|
break; |
521 |
|
|
case TK_ANCHOR_SE: |
522 |
|
|
x -= width; |
523 |
|
|
y -= height; |
524 |
|
|
break; |
525 |
|
|
case TK_ANCHOR_S: |
526 |
|
|
x -= width/2; |
527 |
|
|
y -= height; |
528 |
|
|
break; |
529 |
|
|
case TK_ANCHOR_SW: |
530 |
|
|
y -= height; |
531 |
|
|
break; |
532 |
|
|
case TK_ANCHOR_W: |
533 |
|
|
y -= height/2; |
534 |
|
|
break; |
535 |
|
|
case TK_ANCHOR_NW: |
536 |
|
|
break; |
537 |
|
|
case TK_ANCHOR_CENTER: |
538 |
|
|
x -= width/2; |
539 |
|
|
y -= height/2; |
540 |
|
|
break; |
541 |
|
|
} |
542 |
|
|
|
543 |
|
|
/* |
544 |
|
|
* Store the information in the item header. |
545 |
|
|
*/ |
546 |
|
|
|
547 |
|
|
winItemPtr->header.x1 = x; |
548 |
|
|
winItemPtr->header.y1 = y; |
549 |
|
|
winItemPtr->header.x2 = x + width; |
550 |
|
|
winItemPtr->header.y2 = y + height; |
551 |
|
|
} |
552 |
|
|
|
553 |
|
|
/* |
554 |
|
|
*-------------------------------------------------------------- |
555 |
|
|
* |
556 |
|
|
* DisplayWinItem -- |
557 |
|
|
* |
558 |
|
|
* This procedure is invoked to "draw" a window item in a given |
559 |
|
|
* drawable. Since the window draws itself, we needn't do any |
560 |
|
|
* actual redisplay here. However, this procedure takes care |
561 |
|
|
* of actually repositioning the child window so that it occupies |
562 |
|
|
* the correct screen position. |
563 |
|
|
* |
564 |
|
|
* Results: |
565 |
|
|
* None. |
566 |
|
|
* |
567 |
|
|
* Side effects: |
568 |
|
|
* The child window's position may get changed. Note: this |
569 |
|
|
* procedure gets called both when a window needs to be displayed |
570 |
|
|
* and when it ceases to be visible on the screen (e.g. it was |
571 |
|
|
* scrolled or moved off-screen or the enclosing canvas is |
572 |
|
|
* unmapped). |
573 |
|
|
* |
574 |
|
|
*-------------------------------------------------------------- |
575 |
|
|
*/ |
576 |
|
|
|
577 |
|
|
static void |
578 |
|
|
DisplayWinItem(canvas, itemPtr, display, drawable, regionX, regionY, |
579 |
|
|
regionWidth, regionHeight) |
580 |
|
|
Tk_Canvas canvas; /* Canvas that contains item. */ |
581 |
|
|
Tk_Item *itemPtr; /* Item to be displayed. */ |
582 |
|
|
Display *display; /* Display on which to draw item. */ |
583 |
|
|
Drawable drawable; /* Pixmap or window in which to draw |
584 |
|
|
* item. */ |
585 |
|
|
int regionX, regionY, regionWidth, regionHeight; |
586 |
|
|
/* Describes region of canvas that |
587 |
|
|
* must be redisplayed (not used). */ |
588 |
|
|
{ |
589 |
|
|
WindowItem *winItemPtr = (WindowItem *) itemPtr; |
590 |
|
|
int width, height; |
591 |
|
|
short x, y; |
592 |
|
|
Tk_Window canvasTkwin = Tk_CanvasTkwin(canvas); |
593 |
|
|
Tk_State state = itemPtr->state; |
594 |
|
|
|
595 |
|
|
if (winItemPtr->tkwin == NULL) { |
596 |
|
|
return; |
597 |
|
|
} |
598 |
|
|
if(state == TK_STATE_NULL) { |
599 |
|
|
state = ((TkCanvas *)canvas)->canvas_state; |
600 |
|
|
} |
601 |
|
|
if (state == TK_STATE_HIDDEN) { |
602 |
|
|
Tk_UnmapWindow(winItemPtr->tkwin); |
603 |
|
|
return; |
604 |
|
|
} |
605 |
|
|
Tk_CanvasWindowCoords(canvas, (double) winItemPtr->header.x1, |
606 |
|
|
(double) winItemPtr->header.y1, &x, &y); |
607 |
|
|
width = winItemPtr->header.x2 - winItemPtr->header.x1; |
608 |
|
|
height = winItemPtr->header.y2 - winItemPtr->header.y1; |
609 |
|
|
|
610 |
|
|
/* |
611 |
|
|
* If the window is completely out of the visible area of the canvas |
612 |
|
|
* then unmap it. This code used not to be present (why unmap the |
613 |
|
|
* window if it isn't visible anyway?) but this could cause the |
614 |
|
|
* window to suddenly reappear if the canvas window got resized. |
615 |
|
|
*/ |
616 |
|
|
|
617 |
|
|
if (((x + width) <= 0) || ((y + height) <= 0) |
618 |
|
|
|| (x >= Tk_Width(canvasTkwin)) || (y >= Tk_Height(canvasTkwin))) { |
619 |
|
|
if (canvasTkwin == Tk_Parent(winItemPtr->tkwin)) { |
620 |
|
|
Tk_UnmapWindow(winItemPtr->tkwin); |
621 |
|
|
} else { |
622 |
|
|
Tk_UnmaintainGeometry(winItemPtr->tkwin, canvasTkwin); |
623 |
|
|
} |
624 |
|
|
return; |
625 |
|
|
} |
626 |
|
|
|
627 |
|
|
/* |
628 |
|
|
* Reposition and map the window (but in different ways depending |
629 |
|
|
* on whether the canvas is the window's parent). |
630 |
|
|
*/ |
631 |
|
|
|
632 |
|
|
if (canvasTkwin == Tk_Parent(winItemPtr->tkwin)) { |
633 |
|
|
if ((x != Tk_X(winItemPtr->tkwin)) || (y != Tk_Y(winItemPtr->tkwin)) |
634 |
|
|
|| (width != Tk_Width(winItemPtr->tkwin)) |
635 |
|
|
|| (height != Tk_Height(winItemPtr->tkwin))) { |
636 |
|
|
Tk_MoveResizeWindow(winItemPtr->tkwin, x, y, width, height); |
637 |
|
|
} |
638 |
|
|
Tk_MapWindow(winItemPtr->tkwin); |
639 |
|
|
} else { |
640 |
|
|
Tk_MaintainGeometry(winItemPtr->tkwin, canvasTkwin, x, y, |
641 |
|
|
width, height); |
642 |
|
|
} |
643 |
|
|
} |
644 |
|
|
|
645 |
|
|
/* |
646 |
|
|
*-------------------------------------------------------------- |
647 |
|
|
* |
648 |
|
|
* WinItemToPoint -- |
649 |
|
|
* |
650 |
|
|
* Computes the distance from a given point to a given |
651 |
|
|
* window, in canvas units. |
652 |
|
|
* |
653 |
|
|
* Results: |
654 |
|
|
* The return value is 0 if the point whose x and y coordinates |
655 |
|
|
* are coordPtr[0] and coordPtr[1] is inside the window. If the |
656 |
|
|
* point isn't inside the window then the return value is the |
657 |
|
|
* distance from the point to the window. |
658 |
|
|
* |
659 |
|
|
* Side effects: |
660 |
|
|
* None. |
661 |
|
|
* |
662 |
|
|
*-------------------------------------------------------------- |
663 |
|
|
*/ |
664 |
|
|
|
665 |
|
|
static double |
666 |
|
|
WinItemToPoint(canvas, itemPtr, pointPtr) |
667 |
|
|
Tk_Canvas canvas; /* Canvas containing item. */ |
668 |
|
|
Tk_Item *itemPtr; /* Item to check against point. */ |
669 |
|
|
double *pointPtr; /* Pointer to x and y coordinates. */ |
670 |
|
|
{ |
671 |
|
|
WindowItem *winItemPtr = (WindowItem *) itemPtr; |
672 |
|
|
double x1, x2, y1, y2, xDiff, yDiff; |
673 |
|
|
|
674 |
|
|
x1 = winItemPtr->header.x1; |
675 |
|
|
y1 = winItemPtr->header.y1; |
676 |
|
|
x2 = winItemPtr->header.x2; |
677 |
|
|
y2 = winItemPtr->header.y2; |
678 |
|
|
|
679 |
|
|
/* |
680 |
|
|
* Point is outside window. |
681 |
|
|
*/ |
682 |
|
|
|
683 |
|
|
if (pointPtr[0] < x1) { |
684 |
|
|
xDiff = x1 - pointPtr[0]; |
685 |
|
|
} else if (pointPtr[0] >= x2) { |
686 |
|
|
xDiff = pointPtr[0] + 1 - x2; |
687 |
|
|
} else { |
688 |
|
|
xDiff = 0; |
689 |
|
|
} |
690 |
|
|
|
691 |
|
|
if (pointPtr[1] < y1) { |
692 |
|
|
yDiff = y1 - pointPtr[1]; |
693 |
|
|
} else if (pointPtr[1] >= y2) { |
694 |
|
|
yDiff = pointPtr[1] + 1 - y2; |
695 |
|
|
} else { |
696 |
|
|
yDiff = 0; |
697 |
|
|
} |
698 |
|
|
|
699 |
|
|
return hypot(xDiff, yDiff); |
700 |
|
|
} |
701 |
|
|
|
702 |
|
|
/* |
703 |
|
|
*-------------------------------------------------------------- |
704 |
|
|
* |
705 |
|
|
* WinItemToArea -- |
706 |
|
|
* |
707 |
|
|
* This procedure is called to determine whether an item |
708 |
|
|
* lies entirely inside, entirely outside, or overlapping |
709 |
|
|
* a given rectangle. |
710 |
|
|
* |
711 |
|
|
* Results: |
712 |
|
|
* -1 is returned if the item is entirely outside the area |
713 |
|
|
* given by rectPtr, 0 if it overlaps, and 1 if it is entirely |
714 |
|
|
* inside the given area. |
715 |
|
|
* |
716 |
|
|
* Side effects: |
717 |
|
|
* None. |
718 |
|
|
* |
719 |
|
|
*-------------------------------------------------------------- |
720 |
|
|
*/ |
721 |
|
|
|
722 |
|
|
static int |
723 |
|
|
WinItemToArea(canvas, itemPtr, rectPtr) |
724 |
|
|
Tk_Canvas canvas; /* Canvas containing item. */ |
725 |
|
|
Tk_Item *itemPtr; /* Item to check against rectangle. */ |
726 |
|
|
double *rectPtr; /* Pointer to array of four coordinates |
727 |
|
|
* (x1, y1, x2, y2) describing rectangular |
728 |
|
|
* area. */ |
729 |
|
|
{ |
730 |
|
|
WindowItem *winItemPtr = (WindowItem *) itemPtr; |
731 |
|
|
|
732 |
|
|
if ((rectPtr[2] <= winItemPtr->header.x1) |
733 |
|
|
|| (rectPtr[0] >= winItemPtr->header.x2) |
734 |
|
|
|| (rectPtr[3] <= winItemPtr->header.y1) |
735 |
|
|
|| (rectPtr[1] >= winItemPtr->header.y2)) { |
736 |
|
|
return -1; |
737 |
|
|
} |
738 |
|
|
if ((rectPtr[0] <= winItemPtr->header.x1) |
739 |
|
|
&& (rectPtr[1] <= winItemPtr->header.y1) |
740 |
|
|
&& (rectPtr[2] >= winItemPtr->header.x2) |
741 |
|
|
&& (rectPtr[3] >= winItemPtr->header.y2)) { |
742 |
|
|
return 1; |
743 |
|
|
} |
744 |
|
|
return 0; |
745 |
|
|
} |
746 |
|
|
|
747 |
|
|
/* |
748 |
|
|
*-------------------------------------------------------------- |
749 |
|
|
* |
750 |
|
|
* xerrorhandler -- |
751 |
|
|
* |
752 |
|
|
* This is a dummy function to catch X11 errors during an |
753 |
|
|
* attempt to print a canvas window. |
754 |
|
|
* |
755 |
|
|
* Results: |
756 |
|
|
* None. |
757 |
|
|
* |
758 |
|
|
* Side effects: |
759 |
|
|
* None. |
760 |
|
|
* |
761 |
|
|
*-------------------------------------------------------------- |
762 |
|
|
*/ |
763 |
|
|
|
764 |
|
|
#ifdef X_GetImage |
765 |
|
|
static int |
766 |
|
|
xerrorhandler(clientData, e) |
767 |
|
|
ClientData clientData; |
768 |
|
|
XErrorEvent *e; |
769 |
|
|
{ |
770 |
|
|
return 0; |
771 |
|
|
} |
772 |
|
|
#endif |
773 |
|
|
|
774 |
|
|
|
775 |
|
|
/* |
776 |
|
|
*-------------------------------------------------------------- |
777 |
|
|
* |
778 |
|
|
* WinItemToPostscript -- |
779 |
|
|
* |
780 |
|
|
* This procedure is called to generate Postscript for |
781 |
|
|
* window items. |
782 |
|
|
* |
783 |
|
|
* Results: |
784 |
|
|
* The return value is a standard Tcl result. If an error |
785 |
|
|
* occurs in generating Postscript then an error message is |
786 |
|
|
* left in interp->result, replacing whatever used to be there. |
787 |
|
|
* If no error occurs, then Postscript for the item is appended |
788 |
|
|
* to the result. |
789 |
|
|
* |
790 |
|
|
* Side effects: |
791 |
|
|
* None. |
792 |
|
|
* |
793 |
|
|
*-------------------------------------------------------------- |
794 |
|
|
*/ |
795 |
|
|
|
796 |
|
|
static int |
797 |
|
|
WinItemToPostscript(interp, canvas, itemPtr, prepass) |
798 |
|
|
Tcl_Interp *interp; /* Leave Postscript or error message |
799 |
|
|
* here. */ |
800 |
|
|
Tk_Canvas canvas; /* Information about overall canvas. */ |
801 |
|
|
Tk_Item *itemPtr; /* Item for which Postscript is |
802 |
|
|
* wanted. */ |
803 |
|
|
int prepass; /* 1 means this is a prepass to |
804 |
|
|
* collect font information; 0 means |
805 |
|
|
* final Postscript is being created.*/ |
806 |
|
|
{ |
807 |
|
|
WindowItem *winItemPtr = (WindowItem *)itemPtr; |
808 |
|
|
|
809 |
|
|
double x, y; |
810 |
|
|
int width, height; |
811 |
|
|
Tk_Window tkwin = winItemPtr->tkwin; |
812 |
|
|
|
813 |
|
|
if (prepass || winItemPtr->tkwin == NULL) { |
814 |
|
|
return TCL_OK; |
815 |
|
|
} |
816 |
|
|
|
817 |
|
|
width = Tk_Width(tkwin); |
818 |
|
|
height = Tk_Height(tkwin); |
819 |
|
|
|
820 |
|
|
/* |
821 |
|
|
* Compute the coordinates of the lower-left corner of the window, |
822 |
|
|
* taking into account the anchor position for the window. |
823 |
|
|
*/ |
824 |
|
|
|
825 |
|
|
x = winItemPtr->x; |
826 |
|
|
y = Tk_CanvasPsY(canvas, winItemPtr->y); |
827 |
|
|
|
828 |
|
|
switch (winItemPtr->anchor) { |
829 |
|
|
case TK_ANCHOR_NW: y -= height; break; |
830 |
|
|
case TK_ANCHOR_N: x -= width/2.0; y -= height; break; |
831 |
|
|
case TK_ANCHOR_NE: x -= width; y -= height; break; |
832 |
|
|
case TK_ANCHOR_E: x -= width; y -= height/2.0; break; |
833 |
|
|
case TK_ANCHOR_SE: x -= width; break; |
834 |
|
|
case TK_ANCHOR_S: x -= width/2.0; break; |
835 |
|
|
case TK_ANCHOR_SW: break; |
836 |
|
|
case TK_ANCHOR_W: y -= height/2.0; break; |
837 |
|
|
case TK_ANCHOR_CENTER: x -= width/2.0; y -= height/2.0; break; |
838 |
|
|
} |
839 |
|
|
|
840 |
|
|
return CanvasPsWindow(interp, tkwin, canvas, x, y, width, height); |
841 |
|
|
} |
842 |
|
|
|
843 |
|
|
static int |
844 |
|
|
CanvasPsWindow(interp, tkwin, canvas, x, y, width, height) |
845 |
|
|
Tcl_Interp *interp; /* Leave Postscript or error message |
846 |
|
|
* here. */ |
847 |
|
|
Tk_Window tkwin; /* window to be printed */ |
848 |
|
|
Tk_Canvas canvas; /* Information about overall canvas. */ |
849 |
|
|
double x, y; /* origin of window. */ |
850 |
|
|
int width, height; /* width/height of window. */ |
851 |
|
|
{ |
852 |
|
|
char buffer[256]; |
853 |
|
|
TkWindow *winPtr; |
854 |
|
|
XImage *ximage; |
855 |
|
|
int result; |
856 |
|
|
Tcl_DString buffer1, buffer2; |
857 |
|
|
#ifdef X_GetImage |
858 |
|
|
Tk_ErrorHandler handle; |
859 |
|
|
#endif |
860 |
|
|
|
861 |
|
|
sprintf(buffer, "\n%%%% %s item (%s, %d x %d)\n%.15g %.15g translate\n", |
862 |
|
|
Tk_Class(tkwin), Tk_PathName(tkwin), width, height, x, y); |
863 |
|
|
Tcl_AppendResult(interp, buffer, (char *) NULL); |
864 |
|
|
|
865 |
|
|
/* first try if the widget has its own "postscript" command. If it |
866 |
|
|
* exists, this will produce much better postscript than |
867 |
|
|
* when a pixmap is used. |
868 |
|
|
*/ |
869 |
|
|
|
870 |
|
|
Tcl_DStringInit(&buffer1); |
871 |
|
|
Tcl_DStringInit(&buffer2); |
872 |
|
|
Tcl_DStringGetResult(interp, &buffer2); |
873 |
|
|
sprintf (buffer, "%s postscript -prolog 0\n", Tk_PathName(tkwin)); |
874 |
|
|
result = Tcl_Eval(interp, buffer); |
875 |
|
|
Tcl_DStringGetResult(interp, &buffer1); |
876 |
|
|
Tcl_DStringResult(interp, &buffer2); |
877 |
|
|
Tcl_DStringFree(&buffer2); |
878 |
|
|
|
879 |
|
|
if (result == TCL_OK) { |
880 |
|
|
Tcl_AppendResult(interp, |
881 |
|
|
"50 dict begin\nsave\ngsave\n", |
882 |
|
|
(char *) NULL); |
883 |
|
|
sprintf (buffer, |
884 |
|
|
"0 %d moveto %d 0 rlineto 0 -%d rlineto -%d", |
885 |
|
|
height, width, height, width); |
886 |
|
|
Tcl_AppendResult(interp, buffer, (char *) NULL); |
887 |
|
|
Tcl_AppendResult(interp, " 0 rlineto closepath\n", |
888 |
|
|
"1.000 1.000 1.000 setrgbcolor AdjustColor\nfill\ngrestore\n", |
889 |
|
|
Tcl_DStringValue(&buffer1), "\nrestore\nend\n\n\n", |
890 |
|
|
(char *) NULL); |
891 |
|
|
Tcl_DStringFree(&buffer1); |
892 |
|
|
|
893 |
|
|
for (winPtr = ((TkWindow *) tkwin)->childList; winPtr != NULL; |
894 |
|
|
winPtr = winPtr->nextPtr) { |
895 |
|
|
if (Tk_IsMapped(winPtr)) { |
896 |
|
|
/* printf("child window: %s\n", winPtr->pathName);*/ |
897 |
|
|
} |
898 |
|
|
} |
899 |
|
|
return result; |
900 |
|
|
} |
901 |
|
|
Tcl_DStringFree(&buffer1); |
902 |
|
|
|
903 |
|
|
/* |
904 |
|
|
* If the window is off the screen it will generate an BadMatch/XError |
905 |
|
|
* We catch any BadMatch errors here |
906 |
|
|
*/ |
907 |
|
|
#ifdef X_GetImage |
908 |
|
|
handle = Tk_CreateErrorHandler(Tk_Display(tkwin), BadMatch, |
909 |
|
|
X_GetImage, -1, xerrorhandler, (ClientData) tkwin); |
910 |
|
|
#endif |
911 |
|
|
|
912 |
|
|
/* |
913 |
|
|
* Generate an XImage from the window. We can then read pixel |
914 |
|
|
* values out of the XImage. |
915 |
|
|
*/ |
916 |
|
|
|
917 |
|
|
ximage = XGetImage(Tk_Display(tkwin), Tk_WindowId(tkwin), 0, 0, |
918 |
|
|
(unsigned int)width, (unsigned int)height, AllPlanes, ZPixmap); |
919 |
|
|
|
920 |
|
|
#ifdef X_GetImage |
921 |
|
|
Tk_DeleteErrorHandler(handle); |
922 |
|
|
#endif |
923 |
|
|
|
924 |
|
|
if (ximage == (XImage*) NULL) { |
925 |
|
|
return TCL_OK; |
926 |
|
|
} |
927 |
|
|
|
928 |
|
|
result = TkPostscriptImage(interp, tkwin, |
929 |
|
|
((TkCanvas *)canvas)->psInfo, ximage, 0, 0, width, height); |
930 |
|
|
|
931 |
|
|
XDestroyImage(ximage); |
932 |
|
|
return result; |
933 |
|
|
} |
934 |
|
|
|
935 |
|
|
/* |
936 |
|
|
*-------------------------------------------------------------- |
937 |
|
|
* |
938 |
|
|
* ScaleWinItem -- |
939 |
|
|
* |
940 |
|
|
* This procedure is invoked to rescale a window item. |
941 |
|
|
* |
942 |
|
|
* Results: |
943 |
|
|
* None. |
944 |
|
|
* |
945 |
|
|
* Side effects: |
946 |
|
|
* The window referred to by itemPtr is rescaled |
947 |
|
|
* so that the following transformation is applied to all |
948 |
|
|
* point coordinates: |
949 |
|
|
* x' = originX + scaleX*(x-originX) |
950 |
|
|
* y' = originY + scaleY*(y-originY) |
951 |
|
|
* |
952 |
|
|
*-------------------------------------------------------------- |
953 |
|
|
*/ |
954 |
|
|
|
955 |
|
|
static void |
956 |
|
|
ScaleWinItem(canvas, itemPtr, originX, originY, scaleX, scaleY) |
957 |
|
|
Tk_Canvas canvas; /* Canvas containing window. */ |
958 |
|
|
Tk_Item *itemPtr; /* Window to be scaled. */ |
959 |
|
|
double originX, originY; /* Origin about which to scale window. */ |
960 |
|
|
double scaleX; /* Amount to scale in X direction. */ |
961 |
|
|
double scaleY; /* Amount to scale in Y direction. */ |
962 |
|
|
{ |
963 |
|
|
WindowItem *winItemPtr = (WindowItem *) itemPtr; |
964 |
|
|
|
965 |
|
|
winItemPtr->x = originX + scaleX*(winItemPtr->x - originX); |
966 |
|
|
winItemPtr->y = originY + scaleY*(winItemPtr->y - originY); |
967 |
|
|
if (winItemPtr->width > 0) { |
968 |
|
|
winItemPtr->width = (int) (scaleX*winItemPtr->width); |
969 |
|
|
} |
970 |
|
|
if (winItemPtr->height > 0) { |
971 |
|
|
winItemPtr->height = (int) (scaleY*winItemPtr->height); |
972 |
|
|
} |
973 |
|
|
ComputeWindowBbox(canvas, winItemPtr); |
974 |
|
|
} |
975 |
|
|
|
976 |
|
|
/* |
977 |
|
|
*-------------------------------------------------------------- |
978 |
|
|
* |
979 |
|
|
* TranslateWinItem -- |
980 |
|
|
* |
981 |
|
|
* This procedure is called to move a window by a given amount. |
982 |
|
|
* |
983 |
|
|
* Results: |
984 |
|
|
* None. |
985 |
|
|
* |
986 |
|
|
* Side effects: |
987 |
|
|
* The position of the window is offset by (xDelta, yDelta), |
988 |
|
|
* and the bounding box is updated in the generic part of the |
989 |
|
|
* item structure. |
990 |
|
|
* |
991 |
|
|
*-------------------------------------------------------------- |
992 |
|
|
*/ |
993 |
|
|
|
994 |
|
|
static void |
995 |
|
|
TranslateWinItem(canvas, itemPtr, deltaX, deltaY) |
996 |
|
|
Tk_Canvas canvas; /* Canvas containing item. */ |
997 |
|
|
Tk_Item *itemPtr; /* Item that is being moved. */ |
998 |
|
|
double deltaX, deltaY; /* Amount by which item is to be |
999 |
|
|
* moved. */ |
1000 |
|
|
{ |
1001 |
|
|
WindowItem *winItemPtr = (WindowItem *) itemPtr; |
1002 |
|
|
|
1003 |
|
|
winItemPtr->x += deltaX; |
1004 |
|
|
winItemPtr->y += deltaY; |
1005 |
|
|
ComputeWindowBbox(canvas, winItemPtr); |
1006 |
|
|
} |
1007 |
|
|
|
1008 |
|
|
/* |
1009 |
|
|
*-------------------------------------------------------------- |
1010 |
|
|
* |
1011 |
|
|
* WinItemStructureProc -- |
1012 |
|
|
* |
1013 |
|
|
* This procedure is invoked whenever StructureNotify events |
1014 |
|
|
* occur for a window that's managed as part of a canvas window |
1015 |
|
|
* item. This procudure's only purpose is to clean up when |
1016 |
|
|
* windows are deleted. |
1017 |
|
|
* |
1018 |
|
|
* Results: |
1019 |
|
|
* None. |
1020 |
|
|
* |
1021 |
|
|
* Side effects: |
1022 |
|
|
* The window is disassociated from the window item when it is |
1023 |
|
|
* deleted. |
1024 |
|
|
* |
1025 |
|
|
*-------------------------------------------------------------- |
1026 |
|
|
*/ |
1027 |
|
|
|
1028 |
|
|
static void |
1029 |
|
|
WinItemStructureProc(clientData, eventPtr) |
1030 |
|
|
ClientData clientData; /* Pointer to record describing window item. */ |
1031 |
|
|
XEvent *eventPtr; /* Describes what just happened. */ |
1032 |
|
|
{ |
1033 |
|
|
WindowItem *winItemPtr = (WindowItem *) clientData; |
1034 |
|
|
|
1035 |
|
|
if (eventPtr->type == DestroyNotify) { |
1036 |
|
|
winItemPtr->tkwin = NULL; |
1037 |
|
|
} |
1038 |
|
|
} |
1039 |
|
|
|
1040 |
|
|
/* |
1041 |
|
|
*-------------------------------------------------------------- |
1042 |
|
|
* |
1043 |
|
|
* WinItemRequestProc -- |
1044 |
|
|
* |
1045 |
|
|
* This procedure is invoked whenever a window that's associated |
1046 |
|
|
* with a window canvas item changes its requested dimensions. |
1047 |
|
|
* |
1048 |
|
|
* Results: |
1049 |
|
|
* None. |
1050 |
|
|
* |
1051 |
|
|
* Side effects: |
1052 |
|
|
* The size and location on the screen of the window may change, |
1053 |
|
|
* depending on the options specified for the window item. |
1054 |
|
|
* |
1055 |
|
|
*-------------------------------------------------------------- |
1056 |
|
|
*/ |
1057 |
|
|
|
1058 |
|
|
static void |
1059 |
|
|
WinItemRequestProc(clientData, tkwin) |
1060 |
|
|
ClientData clientData; /* Pointer to record for window item. */ |
1061 |
|
|
Tk_Window tkwin; /* Window that changed its desired |
1062 |
|
|
* size. */ |
1063 |
|
|
{ |
1064 |
|
|
WindowItem *winItemPtr = (WindowItem *) clientData; |
1065 |
|
|
|
1066 |
|
|
ComputeWindowBbox(winItemPtr->canvas, winItemPtr); |
1067 |
|
|
DisplayWinItem(winItemPtr->canvas, (Tk_Item *) winItemPtr, |
1068 |
|
|
(Display *) NULL, (Drawable) None, 0, 0, 0, 0); |
1069 |
|
|
} |
1070 |
|
|
|
1071 |
|
|
/* |
1072 |
|
|
*-------------------------------------------------------------- |
1073 |
|
|
* |
1074 |
|
|
* WinItemLostSlaveProc -- |
1075 |
|
|
* |
1076 |
|
|
* This procedure is invoked by Tk whenever some other geometry |
1077 |
|
|
* claims control over a slave that used to be managed by us. |
1078 |
|
|
* |
1079 |
|
|
* Results: |
1080 |
|
|
* None. |
1081 |
|
|
* |
1082 |
|
|
* Side effects: |
1083 |
|
|
* Forgets all canvas-related information about the slave. |
1084 |
|
|
* |
1085 |
|
|
*-------------------------------------------------------------- |
1086 |
|
|
*/ |
1087 |
|
|
|
1088 |
|
|
/* ARGSUSED */ |
1089 |
|
|
static void |
1090 |
|
|
WinItemLostSlaveProc(clientData, tkwin) |
1091 |
|
|
ClientData clientData; /* WindowItem structure for slave window that |
1092 |
|
|
* was stolen away. */ |
1093 |
|
|
Tk_Window tkwin; /* Tk's handle for the slave window. */ |
1094 |
|
|
{ |
1095 |
|
|
WindowItem *winItemPtr = (WindowItem *) clientData; |
1096 |
|
|
Tk_Window canvasTkwin = Tk_CanvasTkwin(winItemPtr->canvas); |
1097 |
|
|
|
1098 |
|
|
Tk_DeleteEventHandler(winItemPtr->tkwin, StructureNotifyMask, |
1099 |
|
|
WinItemStructureProc, (ClientData) winItemPtr); |
1100 |
|
|
if (canvasTkwin != Tk_Parent(winItemPtr->tkwin)) { |
1101 |
|
|
Tk_UnmaintainGeometry(winItemPtr->tkwin, canvasTkwin); |
1102 |
|
|
} |
1103 |
|
|
Tk_UnmapWindow(winItemPtr->tkwin); |
1104 |
|
|
winItemPtr->tkwin = NULL; |
1105 |
|
|
} |
1106 |
|
|
|
1107 |
|
|
/* End of tkcanvwind.c */ |