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/* $Header$ */
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/*
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* tkEntry.c --
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*
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* This module implements entry widgets for the Tk
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* toolkit. An entry displays a string and allows
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* the string to be edited.
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*
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* Copyright (c) 1990-1994 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: tkentry.c,v 1.1.1.1 2001/06/13 04:59:57 dtashley Exp $
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*/
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#include "tkInt.h"
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#include "default.h"
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/*
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* A data structure of the following type is kept for each entry
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* widget managed by this file:
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*/
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typedef struct {
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Tk_Window tkwin; /* Window that embodies the entry. NULL
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* means that the window has been destroyed
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* but the data structures haven't yet been
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* cleaned up.*/
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Display *display; /* Display containing widget. Used, among
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* other things, so that resources can be
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* freed even after tkwin has gone away. */
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Tcl_Interp *interp; /* Interpreter associated with entry. */
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Tcl_Command widgetCmd; /* Token for entry's widget command. */
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Tk_OptionTable optionTable; /* Table that defines configuration options
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* available for this widget. */
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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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char *string; /* Pointer to storage for string;
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* NULL-terminated; malloc-ed. */
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int insertPos; /* Character index before which next typed
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* character will be inserted. */
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/*
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* Information about what's selected, if any.
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*/
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int selectFirst; /* Character index of first selected
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* character (-1 means nothing selected. */
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int selectLast; /* Character index just after last selected
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* character (-1 means nothing selected. */
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int selectAnchor; /* Fixed end of selection (i.e. "select to"
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* operation will use this as one end of the
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* selection). */
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/*
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* Information for scanning:
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*/
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int scanMarkX; /* X-position at which scan started (e.g.
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* button was pressed here). */
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int scanMarkIndex; /* Character index of character that was at
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* left of window when scan started. */
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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_3DBorder normalBorder; /* Used for drawing border around whole
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* window, plus used for background. */
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int borderWidth; /* Width of 3-D border around window. */
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Tk_Cursor cursor; /* Current cursor for window, or None. */
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int exportSelection; /* Non-zero means tie internal entry selection
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* to X selection. */
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Tk_Font tkfont; /* Information about text font, or NULL. */
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XColor *fgColorPtr; /* Text color in normal mode. */
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XColor *highlightBgColorPtr;/* Color for drawing traversal highlight
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* area when highlight is off. */
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XColor *highlightColorPtr; /* Color for drawing traversal highlight. */
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int highlightWidth; /* Width in pixels of highlight to draw
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* around widget when it has the focus.
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* <= 0 means don't draw a highlight. */
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Tk_3DBorder insertBorder; /* Used to draw vertical bar for insertion
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* cursor. */
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int insertBorderWidth; /* Width of 3-D border around insert cursor. */
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int insertOffTime; /* Number of milliseconds cursor should spend
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* in "off" state for each blink. */
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int insertOnTime; /* Number of milliseconds cursor should spend
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* in "on" state for each blink. */
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int insertWidth; /* Total width of insert cursor. */
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Tk_Justify justify; /* Justification to use for text within
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* window. */
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int relief; /* 3-D effect: TK_RELIEF_RAISED, etc. */
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Tk_3DBorder selBorder; /* Border and background for selected
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* characters. */
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int selBorderWidth; /* Width of border around selection. */
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XColor *selFgColorPtr; /* Foreground color for selected text. */
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char *showChar; /* Value of -show option. If non-NULL, first
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* character is used for displaying all
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* characters in entry. Malloc'ed. */
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int state; /* Normal or disabled. Entry is read-only
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* when disabled. */
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char *textVarName; /* Name of variable (malloc'ed) or NULL.
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* If non-NULL, entry's string tracks the
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* contents of this variable and vice versa. */
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char *takeFocus; /* Value of -takefocus option; not used in
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* the C code, but used by keyboard traversal
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* scripts. Malloc'ed, but may be NULL. */
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int prefWidth; /* Desired width of window, measured in
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* average characters. */
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char *scrollCmd; /* Command prefix for communicating with
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* scrollbar(s). Malloc'ed. NULL means
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* no command to issue. */
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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 numBytes; /* Length of string in bytes. */
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int numChars; /* Length of string in characters. Both
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* string and displayString have the same
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* character length, but may have different
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* byte lengths due to being made from
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* different UTF-8 characters. */
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char *displayString; /* String to use when displaying. This may
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* be a pointer to string, or a pointer to
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* malloced memory with the same character
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* length as string but whose characters
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* are all equal to showChar. */
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int numDisplayBytes; /* Length of displayString in bytes. */
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int inset; /* Number of pixels on the left and right
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* sides that are taken up by XPAD, borderWidth
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* (if any), and highlightWidth (if any). */
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Tk_TextLayout textLayout; /* Cached text layout information. */
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int layoutX, layoutY; /* Origin for layout. */
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int leftX; /* X position at which character at leftIndex
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* is drawn (varies depending on justify). */
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int leftIndex; /* Character index of left-most character
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* visible in window. */
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Tcl_TimerToken insertBlinkHandler;
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/* Timer handler used to blink cursor on and
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* off. */
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GC textGC; /* For drawing normal text. */
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GC selTextGC; /* For drawing selected text. */
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GC highlightGC; /* For drawing traversal highlight. */
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int avgWidth; /* Width of average character. */
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int flags; /* Miscellaneous flags; see below for
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* definitions. */
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Tk_TSOffset tsoffset;
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char *validateCmd; /* Command prefix to use when invoking
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* validate command. NULL means don't
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* invoke commands. Malloc'ed. */
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int validate; /* Non-zero means try to validate */
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char *invalidCmd; /* Command called when a validation returns 0
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* (successfully fails), defaults to {}. */
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} Entry;
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/*
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* Assigned bits of "flags" fields of Entry structures, and what those
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* bits mean:
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*
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* REDRAW_PENDING: Non-zero means a DoWhenIdle handler has
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* already been queued to redisplay the entry.
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* BORDER_NEEDED: Non-zero means 3-D border must be redrawn
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* around window during redisplay. Normally
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* only text portion needs to be redrawn.
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* CURSOR_ON: Non-zero means insert cursor is displayed at
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* present. 0 means it isn't displayed.
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* GOT_FOCUS: Non-zero means this window has the input
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* focus.
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* UPDATE_SCROLLBAR: Non-zero means scrollbar should be updated
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* during next redisplay operation.
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* GOT_SELECTION: Non-zero means we've claimed the selection.
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* ENTRY_DELETED: This entry has been effectively destroyed.
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* VALIDATING: Non-zero means we are in a validateCmd
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* VALIDATE_VAR: Non-zero means we are attempting to validate
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* the entry's textvariable with validateCmd
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* VALIDATE_ABORT: Non-zero if validatecommand signals an abort
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* for current procedure and make no changes
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*/
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#define REDRAW_PENDING 1
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#define BORDER_NEEDED 2
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#define CURSOR_ON 4
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#define GOT_FOCUS 8
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#define UPDATE_SCROLLBAR 0x10
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#define GOT_SELECTION 0x20
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#define ENTRY_DELETED 0x40
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#define VALIDATING 0x80
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#define VALIDATE_VAR 0x100
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#define VALIDATE_ABORT 0x200
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/*
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* The following macro defines how many extra pixels to leave on each
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* side of the text in the entry.
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*/
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#define XPAD 1
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#define YPAD 1
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/*
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* The following enum is used to define a type for the -state option
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* of the Entry widget. These values are used as indices into the
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* string table below.
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*/
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enum state {
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STATE_DISABLED, STATE_NORMAL
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};
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static char *stateStrings[] = {
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"disabled", "normal", (char *) NULL
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};
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/*
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* Definitions for -validate option values:
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*/
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static char *validateStrings[] = {
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"all", "key", "focus", "focusin", "focusout", "none", (char *) NULL
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};
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enum validateType {
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VALIDATE_ALL, VALIDATE_KEY, VALIDATE_FOCUS,
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VALIDATE_FOCUSIN, VALIDATE_FOCUSOUT, VALIDATE_NONE,
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/*
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* These extra enums are for use with EntryValidateChange
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*/
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VALIDATE_FORCED, VALIDATE_DELETE, VALIDATE_INSERT
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};
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#define DEF_ENTRY_VALIDATE "none"
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#define DEF_ENTRY_INVALIDCMD ""
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/*
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* Information used for argv parsing.
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*/
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static Tk_OptionSpec optionSpecs[] = {
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{TK_OPTION_BORDER, "-background", "background", "Background",
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DEF_ENTRY_BG_COLOR, -1, Tk_Offset(Entry, normalBorder),
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0, (ClientData) DEF_ENTRY_BG_MONO, 0},
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{TK_OPTION_SYNONYM, "-bd", (char *) NULL, (char *) NULL,
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(char *) NULL, 0, -1, 0, (ClientData) "-borderwidth", 0},
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{TK_OPTION_SYNONYM, "-bg", (char *) NULL, (char *) NULL,
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(char *) NULL, 0, -1, 0, (ClientData) "-background", 0},
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{TK_OPTION_PIXELS, "-borderwidth", "borderWidth", "BorderWidth",
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DEF_ENTRY_BORDER_WIDTH, -1, Tk_Offset(Entry, borderWidth),
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0, 0, 0},
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{TK_OPTION_CURSOR, "-cursor", "cursor", "Cursor",
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DEF_ENTRY_CURSOR, -1, Tk_Offset(Entry, cursor),
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TK_OPTION_NULL_OK, 0, 0},
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{TK_OPTION_BOOLEAN, "-exportselection", "exportSelection",
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"ExportSelection", DEF_ENTRY_EXPORT_SELECTION, -1,
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Tk_Offset(Entry, exportSelection), 0, 0, 0},
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{TK_OPTION_SYNONYM, "-fg", "foreground", (char *) NULL,
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(char *) NULL, 0, -1, 0, (ClientData) "-foreground", 0},
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{TK_OPTION_FONT, "-font", "font", "Font",
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DEF_ENTRY_FONT, -1, Tk_Offset(Entry, tkfont), 0, 0, 0},
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{TK_OPTION_COLOR, "-foreground", "foreground", "Foreground",
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DEF_ENTRY_FG, -1, Tk_Offset(Entry, fgColorPtr), 0,
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0, 0},
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{TK_OPTION_COLOR, "-highlightbackground", "highlightBackground",
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"HighlightBackground", DEF_ENTRY_HIGHLIGHT_BG,
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-1, Tk_Offset(Entry, highlightBgColorPtr),
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0, 0, 0},
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{TK_OPTION_COLOR, "-highlightcolor", "highlightColor", "HighlightColor",
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DEF_ENTRY_HIGHLIGHT, -1, Tk_Offset(Entry, highlightColorPtr),
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0, 0, 0},
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{TK_OPTION_PIXELS, "-highlightthickness", "highlightThickness",
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"HighlightThickness", DEF_ENTRY_HIGHLIGHT_WIDTH, -1,
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Tk_Offset(Entry, highlightWidth), 0, 0, 0},
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{TK_OPTION_BORDER, "-insertbackground", "insertBackground", "Foreground",
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DEF_ENTRY_INSERT_BG,
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-1, Tk_Offset(Entry, insertBorder),
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0, 0, 0},
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{TK_OPTION_PIXELS, "-insertborderwidth", "insertBorderWidth",
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"BorderWidth", DEF_ENTRY_INSERT_BD_COLOR, -1,
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Tk_Offset(Entry, insertBorderWidth), 0,
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(ClientData) DEF_ENTRY_INSERT_BD_MONO, 0},
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{TK_OPTION_INT, "-insertofftime", "insertOffTime", "OffTime",
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DEF_ENTRY_INSERT_OFF_TIME, -1, Tk_Offset(Entry, insertOffTime),
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0, 0, 0},
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{TK_OPTION_INT, "-insertontime", "insertOnTime", "OnTime",
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DEF_ENTRY_INSERT_ON_TIME, -1, Tk_Offset(Entry, insertOnTime),
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292 |
0, 0, 0},
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293 |
{TK_OPTION_PIXELS, "-insertwidth", "insertWidth", "InsertWidth",
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294 |
DEF_ENTRY_INSERT_WIDTH, -1, Tk_Offset(Entry, insertWidth),
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295 |
0, 0, 0},
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296 |
{TK_OPTION_STRING, "-invalidcommand", "invalidCommand", "InvalidCommand",
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297 |
DEF_ENTRY_INVALIDCMD, -1, Tk_Offset(Entry, invalidCmd),
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298 |
TK_OPTION_NULL_OK, 0, 0},
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299 |
{TK_OPTION_SYNONYM, "-invcmd", (char *) NULL, (char *) NULL,
|
300 |
(char *) NULL, 0, -1, 0, (ClientData) "-invalidcommand", 0},
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301 |
{TK_OPTION_JUSTIFY, "-justify", "justify", "Justify",
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302 |
DEF_ENTRY_JUSTIFY, -1, Tk_Offset(Entry, justify), 0, 0, 0},
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303 |
{TK_OPTION_RELIEF, "-relief", "relief", "Relief",
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304 |
DEF_ENTRY_RELIEF, -1, Tk_Offset(Entry, relief),
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305 |
0, 0, 0},
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306 |
{TK_OPTION_BORDER, "-selectbackground", "selectBackground", "Foreground",
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307 |
DEF_ENTRY_SELECT_COLOR, -1, Tk_Offset(Entry, selBorder),
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308 |
0, (ClientData) DEF_ENTRY_SELECT_MONO, 0},
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309 |
{TK_OPTION_PIXELS, "-selectborderwidth", "selectBorderWidth",
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310 |
"BorderWidth", DEF_ENTRY_SELECT_BD_COLOR, -1,
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311 |
Tk_Offset(Entry, selBorderWidth),
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312 |
0, (ClientData) DEF_ENTRY_SELECT_BD_MONO, 0},
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313 |
{TK_OPTION_COLOR, "-selectforeground", "selectForeground", "Background",
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314 |
DEF_ENTRY_SELECT_FG_COLOR, -1, Tk_Offset(Entry, selFgColorPtr),
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315 |
0, (ClientData) DEF_ENTRY_SELECT_FG_MONO, 0},
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316 |
{TK_OPTION_STRING, "-show", "show", "Show",
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317 |
DEF_ENTRY_SHOW, -1, Tk_Offset(Entry, showChar),
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318 |
TK_OPTION_NULL_OK, 0, 0},
|
319 |
{TK_OPTION_STRING_TABLE, "-state", "state", "State",
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320 |
DEF_ENTRY_STATE, -1, Tk_Offset(Entry, state),
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321 |
0, (ClientData) stateStrings, 0},
|
322 |
{TK_OPTION_STRING, "-takefocus", "takeFocus", "TakeFocus",
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323 |
DEF_ENTRY_TAKE_FOCUS, -1, Tk_Offset(Entry, takeFocus),
|
324 |
TK_OPTION_NULL_OK, 0, 0},
|
325 |
{TK_OPTION_STRING, "-textvariable", "textVariable", "Variable",
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326 |
DEF_ENTRY_TEXT_VARIABLE, -1, Tk_Offset(Entry, textVarName),
|
327 |
TK_OPTION_NULL_OK, 0, 0},
|
328 |
{TK_OPTION_STRING_TABLE, "-validate", "validate", "Validate",
|
329 |
DEF_ENTRY_VALIDATE, -1, Tk_Offset(Entry, validate),
|
330 |
0, (ClientData) validateStrings, 0},
|
331 |
{TK_OPTION_STRING, "-validatecommand", "validateCommand", "ValidateCommand",
|
332 |
(char *) NULL, -1, Tk_Offset(Entry, validateCmd),
|
333 |
TK_OPTION_NULL_OK, 0, 0},
|
334 |
{TK_OPTION_SYNONYM, "-vcmd", (char *) NULL, (char *) NULL,
|
335 |
(char *) NULL, 0, -1, 0, (ClientData) "-validatecommand", 0},
|
336 |
{TK_OPTION_INT, "-width", "width", "Width",
|
337 |
DEF_ENTRY_WIDTH, -1, Tk_Offset(Entry, prefWidth), 0, 0, 0},
|
338 |
{TK_OPTION_STRING, "-xscrollcommand", "xScrollCommand", "ScrollCommand",
|
339 |
DEF_ENTRY_SCROLL_COMMAND, -1, Tk_Offset(Entry, scrollCmd),
|
340 |
TK_OPTION_NULL_OK, 0, 0},
|
341 |
{TK_OPTION_END, (char *) NULL, (char *) NULL, (char *) NULL,
|
342 |
(char *) NULL, 0, -1, 0, 0, 0}
|
343 |
};
|
344 |
|
345 |
/*
|
346 |
* Flags for GetEntryIndex procedure:
|
347 |
*/
|
348 |
|
349 |
#define ZERO_OK 1
|
350 |
#define LAST_PLUS_ONE_OK 2
|
351 |
|
352 |
/*
|
353 |
* The following tables define the entry widget commands (and sub-
|
354 |
* commands) and map the indexes into the string tables into
|
355 |
* enumerated types used to dispatch the entry widget command.
|
356 |
*/
|
357 |
|
358 |
static char *commandNames[] = {
|
359 |
"bbox", "cget", "configure", "delete", "get", "icursor", "index",
|
360 |
"insert", "scan", "selection", "validate", "xview", (char *) NULL
|
361 |
};
|
362 |
|
363 |
enum command {
|
364 |
COMMAND_BBOX, COMMAND_CGET, COMMAND_CONFIGURE, COMMAND_DELETE,
|
365 |
COMMAND_GET, COMMAND_ICURSOR, COMMAND_INDEX, COMMAND_INSERT,
|
366 |
COMMAND_SCAN, COMMAND_SELECTION, COMMAND_VALIDATE, COMMAND_XVIEW
|
367 |
};
|
368 |
|
369 |
static char *selCommandNames[] = {
|
370 |
"adjust", "clear", "from", "present", "range", "to", (char *) NULL
|
371 |
};
|
372 |
|
373 |
enum selcommand {
|
374 |
SELECTION_ADJUST, SELECTION_CLEAR, SELECTION_FROM,
|
375 |
SELECTION_PRESENT, SELECTION_RANGE, SELECTION_TO
|
376 |
};
|
377 |
|
378 |
/*
|
379 |
* Forward declarations for procedures defined later in this file:
|
380 |
*/
|
381 |
|
382 |
static int ConfigureEntry _ANSI_ARGS_((Tcl_Interp *interp,
|
383 |
Entry *entryPtr, int objc,
|
384 |
Tcl_Obj *CONST objv[], int flags));
|
385 |
static void DeleteChars _ANSI_ARGS_((Entry *entryPtr, int index,
|
386 |
int count));
|
387 |
static void DestroyEntry _ANSI_ARGS_((char *memPtr));
|
388 |
static void DisplayEntry _ANSI_ARGS_((ClientData clientData));
|
389 |
static void EntryBlinkProc _ANSI_ARGS_((ClientData clientData));
|
390 |
static void EntryCmdDeletedProc _ANSI_ARGS_((
|
391 |
ClientData clientData));
|
392 |
static void EntryComputeGeometry _ANSI_ARGS_((Entry *entryPtr));
|
393 |
static void EntryEventProc _ANSI_ARGS_((ClientData clientData,
|
394 |
XEvent *eventPtr));
|
395 |
static void EntryFocusProc _ANSI_ARGS_ ((Entry *entryPtr,
|
396 |
int gotFocus));
|
397 |
static int EntryFetchSelection _ANSI_ARGS_((ClientData clientData,
|
398 |
int offset, char *buffer, int maxBytes));
|
399 |
static void EntryLostSelection _ANSI_ARGS_((
|
400 |
ClientData clientData));
|
401 |
static void EventuallyRedraw _ANSI_ARGS_((Entry *entryPtr));
|
402 |
static void EntryScanTo _ANSI_ARGS_((Entry *entryPtr, int y));
|
403 |
static void EntrySetValue _ANSI_ARGS_((Entry *entryPtr,
|
404 |
char *value));
|
405 |
static void EntrySelectTo _ANSI_ARGS_((
|
406 |
Entry *entryPtr, int index));
|
407 |
static char * EntryTextVarProc _ANSI_ARGS_((ClientData clientData,
|
408 |
Tcl_Interp *interp, char *name1, char *name2,
|
409 |
int flags));
|
410 |
static void EntryUpdateScrollbar _ANSI_ARGS_((Entry *entryPtr));
|
411 |
static int EntryValidate _ANSI_ARGS_((Entry *entryPtr,
|
412 |
char *cmd));
|
413 |
static int EntryValidateChange _ANSI_ARGS_((Entry *entryPtr,
|
414 |
char *change, char *new, int index, int type));
|
415 |
static void ExpandPercents _ANSI_ARGS_((Entry *entryPtr,
|
416 |
char *before, char *change, char *new,
|
417 |
int index, int type, Tcl_DString *dsPtr));
|
418 |
static void EntryValueChanged _ANSI_ARGS_((Entry *entryPtr));
|
419 |
static void EntryVisibleRange _ANSI_ARGS_((Entry *entryPtr,
|
420 |
double *firstPtr, double *lastPtr));
|
421 |
static int EntryWidgetObjCmd _ANSI_ARGS_((ClientData clientData,
|
422 |
Tcl_Interp *interp, int objc,
|
423 |
Tcl_Obj *CONST objv[]));
|
424 |
static void EntryWorldChanged _ANSI_ARGS_((
|
425 |
ClientData instanceData));
|
426 |
static int GetEntryIndex _ANSI_ARGS_((Tcl_Interp *interp,
|
427 |
Entry *entryPtr, char *string, int *indexPtr));
|
428 |
static void InsertChars _ANSI_ARGS_((Entry *entryPtr, int index,
|
429 |
char *string));
|
430 |
|
431 |
/*
|
432 |
* The structure below defines entry class behavior by means of procedures
|
433 |
* that can be invoked from generic window code.
|
434 |
*/
|
435 |
|
436 |
static TkClassProcs entryClass = {
|
437 |
NULL, /* createProc. */
|
438 |
EntryWorldChanged, /* geometryProc. */
|
439 |
NULL /* modalProc. */
|
440 |
};
|
441 |
|
442 |
|
443 |
/*
|
444 |
*--------------------------------------------------------------
|
445 |
*
|
446 |
* Tk_EntryObjCmd --
|
447 |
*
|
448 |
* This procedure is invoked to process the "entry" Tcl
|
449 |
* command. See the user documentation for details on what
|
450 |
* it does.
|
451 |
*
|
452 |
* Results:
|
453 |
* A standard Tcl result.
|
454 |
*
|
455 |
* Side effects:
|
456 |
* See the user documentation.
|
457 |
*
|
458 |
*--------------------------------------------------------------
|
459 |
*/
|
460 |
|
461 |
int
|
462 |
Tk_EntryObjCmd(clientData, interp, objc, objv)
|
463 |
ClientData clientData; /* Either NULL or pointer to option table. */
|
464 |
Tcl_Interp *interp; /* Current interpreter. */
|
465 |
int objc; /* Number of arguments. */
|
466 |
Tcl_Obj *CONST objv[]; /* Argument objects. */
|
467 |
{
|
468 |
register Entry *entryPtr;
|
469 |
Tk_OptionTable optionTable;
|
470 |
Tk_Window tkwin;
|
471 |
|
472 |
optionTable = (Tk_OptionTable) clientData;
|
473 |
if (optionTable == NULL) {
|
474 |
Tcl_CmdInfo info;
|
475 |
char *name;
|
476 |
|
477 |
/*
|
478 |
* We haven't created the option table for this widget class
|
479 |
* yet. Do it now and save the table as the clientData for
|
480 |
* the command, so we'll have access to it in future
|
481 |
* invocations of the command.
|
482 |
*/
|
483 |
|
484 |
optionTable = Tk_CreateOptionTable(interp, optionSpecs);
|
485 |
name = Tcl_GetString(objv[0]);
|
486 |
Tcl_GetCommandInfo(interp, name, &info);
|
487 |
info.objClientData = (ClientData) optionTable;
|
488 |
Tcl_SetCommandInfo(interp, name, &info);
|
489 |
}
|
490 |
|
491 |
if (objc < 2) {
|
492 |
Tcl_WrongNumArgs(interp, 1, objv, "pathName ?options?");
|
493 |
return TCL_ERROR;
|
494 |
}
|
495 |
|
496 |
tkwin = Tk_CreateWindowFromPath(interp, Tk_MainWindow(interp),
|
497 |
Tcl_GetString(objv[1]), (char *) NULL);
|
498 |
if (tkwin == NULL) {
|
499 |
return TCL_ERROR;
|
500 |
}
|
501 |
|
502 |
/*
|
503 |
* Initialize the fields of the structure that won't be initialized
|
504 |
* by ConfigureEntry, or that ConfigureEntry requires to be
|
505 |
* initialized already (e.g. resource pointers).
|
506 |
*/
|
507 |
|
508 |
entryPtr = (Entry *) ckalloc(sizeof(Entry));
|
509 |
entryPtr->tkwin = tkwin;
|
510 |
entryPtr->display = Tk_Display(tkwin);
|
511 |
entryPtr->interp = interp;
|
512 |
entryPtr->widgetCmd = Tcl_CreateObjCommand(interp,
|
513 |
Tk_PathName(entryPtr->tkwin), EntryWidgetObjCmd,
|
514 |
(ClientData) entryPtr, EntryCmdDeletedProc);
|
515 |
entryPtr->optionTable = optionTable;
|
516 |
entryPtr->string = (char *) ckalloc(1);
|
517 |
entryPtr->string[0] = '\0';
|
518 |
entryPtr->insertPos = 0;
|
519 |
entryPtr->selectFirst = -1;
|
520 |
entryPtr->selectLast = -1;
|
521 |
entryPtr->selectAnchor = 0;
|
522 |
entryPtr->scanMarkX = 0;
|
523 |
entryPtr->scanMarkIndex = 0;
|
524 |
|
525 |
entryPtr->normalBorder = NULL;
|
526 |
entryPtr->borderWidth = 0;
|
527 |
entryPtr->cursor = None;
|
528 |
entryPtr->exportSelection = 1;
|
529 |
entryPtr->tkfont = NULL;
|
530 |
entryPtr->fgColorPtr = NULL;
|
531 |
entryPtr->highlightBgColorPtr = NULL;
|
532 |
entryPtr->highlightColorPtr = NULL;
|
533 |
entryPtr->highlightWidth = 0;
|
534 |
entryPtr->insertBorder = NULL;
|
535 |
entryPtr->insertBorderWidth = 0;
|
536 |
entryPtr->insertOffTime = 0;
|
537 |
entryPtr->insertOnTime = 0;
|
538 |
entryPtr->insertWidth = 0;
|
539 |
entryPtr->justify = TK_JUSTIFY_LEFT;
|
540 |
entryPtr->relief = TK_RELIEF_FLAT;
|
541 |
entryPtr->selBorder = NULL;
|
542 |
entryPtr->selBorderWidth = 0;
|
543 |
entryPtr->selFgColorPtr = NULL;
|
544 |
entryPtr->showChar = NULL;
|
545 |
entryPtr->state = STATE_NORMAL;
|
546 |
entryPtr->textVarName = NULL;
|
547 |
entryPtr->takeFocus = NULL;
|
548 |
entryPtr->prefWidth = 0;
|
549 |
entryPtr->scrollCmd = NULL;
|
550 |
entryPtr->numBytes = 0;
|
551 |
entryPtr->numChars = 0;
|
552 |
entryPtr->displayString = entryPtr->string;
|
553 |
entryPtr->numDisplayBytes = 0;
|
554 |
entryPtr->inset = XPAD;
|
555 |
entryPtr->textLayout = NULL;
|
556 |
entryPtr->layoutX = 0;
|
557 |
entryPtr->layoutY = 0;
|
558 |
entryPtr->leftX = 0;
|
559 |
entryPtr->leftIndex = 0;
|
560 |
entryPtr->insertBlinkHandler = (Tcl_TimerToken) NULL;
|
561 |
entryPtr->textGC = None;
|
562 |
entryPtr->selTextGC = None;
|
563 |
entryPtr->highlightGC = None;
|
564 |
entryPtr->avgWidth = 1;
|
565 |
entryPtr->flags = 0;
|
566 |
entryPtr->validateCmd = NULL;
|
567 |
entryPtr->validate = VALIDATE_NONE;
|
568 |
entryPtr->invalidCmd = NULL;
|
569 |
|
570 |
Tk_SetClass(entryPtr->tkwin, "Entry");
|
571 |
TkSetClassProcs(entryPtr->tkwin, &entryClass, (ClientData) entryPtr);
|
572 |
Tk_CreateEventHandler(entryPtr->tkwin,
|
573 |
ExposureMask|StructureNotifyMask|FocusChangeMask,
|
574 |
EntryEventProc, (ClientData) entryPtr);
|
575 |
Tk_CreateSelHandler(entryPtr->tkwin, XA_PRIMARY, XA_STRING,
|
576 |
EntryFetchSelection, (ClientData) entryPtr, XA_STRING);
|
577 |
|
578 |
if ((Tk_InitOptions(interp, (char *) entryPtr, optionTable, tkwin)
|
579 |
!= TCL_OK) ||
|
580 |
(ConfigureEntry(interp, entryPtr, objc-2, objv+2, 0) != TCL_OK)) {
|
581 |
Tk_DestroyWindow(entryPtr->tkwin);
|
582 |
return TCL_ERROR;
|
583 |
}
|
584 |
|
585 |
Tcl_SetResult(interp, Tk_PathName(entryPtr->tkwin), TCL_STATIC);
|
586 |
return TCL_OK;
|
587 |
}
|
588 |
|
589 |
/*
|
590 |
*--------------------------------------------------------------
|
591 |
*
|
592 |
* EntryWidgetObjCmd --
|
593 |
*
|
594 |
* This procedure is invoked to process the Tcl command
|
595 |
* that corresponds to a widget managed by this module.
|
596 |
* See the user documentation for details on what it does.
|
597 |
*
|
598 |
* Results:
|
599 |
* A standard Tcl result.
|
600 |
*
|
601 |
* Side effects:
|
602 |
* See the user documentation.
|
603 |
*
|
604 |
*--------------------------------------------------------------
|
605 |
*/
|
606 |
|
607 |
static int
|
608 |
EntryWidgetObjCmd(clientData, interp, objc, objv)
|
609 |
ClientData clientData; /* Information about entry widget. */
|
610 |
Tcl_Interp *interp; /* Current interpreter. */
|
611 |
int objc; /* Number of arguments. */
|
612 |
Tcl_Obj *CONST objv[]; /* Argument objects. */
|
613 |
{
|
614 |
Entry *entryPtr = (Entry *) clientData;
|
615 |
int cmdIndex, selIndex, result;
|
616 |
Tcl_Obj *objPtr;
|
617 |
|
618 |
if (objc < 2) {
|
619 |
Tcl_WrongNumArgs(interp, 1, objv, "option ?arg arg ...?");
|
620 |
return TCL_ERROR;
|
621 |
}
|
622 |
Tcl_Preserve((ClientData) entryPtr);
|
623 |
|
624 |
/*
|
625 |
* Parse the widget command by looking up the second token in
|
626 |
* the list of valid command names.
|
627 |
*/
|
628 |
|
629 |
result = Tcl_GetIndexFromObj(interp, objv[1], commandNames,
|
630 |
"option", 0, &cmdIndex);
|
631 |
if (result != TCL_OK) {
|
632 |
return result;
|
633 |
}
|
634 |
|
635 |
switch (cmdIndex) {
|
636 |
case COMMAND_BBOX: {
|
637 |
int index, x, y, width, height;
|
638 |
char buf[TCL_INTEGER_SPACE * 4];
|
639 |
|
640 |
if (objc != 3) {
|
641 |
Tcl_WrongNumArgs(interp, 2, objv, "index");
|
642 |
goto error;
|
643 |
}
|
644 |
if (GetEntryIndex(interp, entryPtr, Tcl_GetString(objv[2]),
|
645 |
&index) != TCL_OK) {
|
646 |
goto error;
|
647 |
}
|
648 |
if ((index == entryPtr->numChars) && (index > 0)) {
|
649 |
index--;
|
650 |
}
|
651 |
Tk_CharBbox(entryPtr->textLayout, index, &x, &y,
|
652 |
&width, &height);
|
653 |
sprintf(buf, "%d %d %d %d", x + entryPtr->layoutX,
|
654 |
y + entryPtr->layoutY, width, height);
|
655 |
Tcl_SetResult(interp, buf, TCL_VOLATILE);
|
656 |
break;
|
657 |
}
|
658 |
|
659 |
case COMMAND_CGET: {
|
660 |
if (objc != 3) {
|
661 |
Tcl_WrongNumArgs(interp, 2, objv, "option");
|
662 |
goto error;
|
663 |
}
|
664 |
|
665 |
objPtr = Tk_GetOptionValue(interp, (char *) entryPtr,
|
666 |
entryPtr->optionTable, objv[2], entryPtr->tkwin);
|
667 |
if (objPtr == NULL) {
|
668 |
goto error;
|
669 |
} else {
|
670 |
Tcl_SetObjResult(interp, objPtr);
|
671 |
}
|
672 |
break;
|
673 |
}
|
674 |
|
675 |
case COMMAND_CONFIGURE: {
|
676 |
if (objc <= 3) {
|
677 |
objPtr = Tk_GetOptionInfo(interp, (char *) entryPtr,
|
678 |
entryPtr->optionTable,
|
679 |
(objc == 3) ? objv[2] : (Tcl_Obj *) NULL,
|
680 |
entryPtr->tkwin);
|
681 |
if (objPtr == NULL) {
|
682 |
goto error;
|
683 |
} else {
|
684 |
Tcl_SetObjResult(interp, objPtr);
|
685 |
}
|
686 |
} else {
|
687 |
result = ConfigureEntry(interp, entryPtr, objc-2, objv+2, 0);
|
688 |
}
|
689 |
break;
|
690 |
}
|
691 |
|
692 |
case COMMAND_DELETE: {
|
693 |
int first, last;
|
694 |
|
695 |
if ((objc < 3) || (objc > 4)) {
|
696 |
Tcl_WrongNumArgs(interp, 2, objv, "firstIndex ?lastIndex?");
|
697 |
goto error;
|
698 |
}
|
699 |
if (GetEntryIndex(interp, entryPtr, Tcl_GetString(objv[2]),
|
700 |
&first) != TCL_OK) {
|
701 |
goto error;
|
702 |
}
|
703 |
if (objc == 3) {
|
704 |
last = first + 1;
|
705 |
} else {
|
706 |
if (GetEntryIndex(interp, entryPtr, Tcl_GetString(objv[3]),
|
707 |
&last) != TCL_OK) {
|
708 |
goto error;
|
709 |
}
|
710 |
}
|
711 |
if ((last >= first) && (entryPtr->state == STATE_NORMAL)) {
|
712 |
DeleteChars(entryPtr, first, last - first);
|
713 |
}
|
714 |
break;
|
715 |
}
|
716 |
|
717 |
case COMMAND_GET: {
|
718 |
if (objc != 2) {
|
719 |
Tcl_WrongNumArgs(interp, 2, objv, (char *) NULL);
|
720 |
goto error;
|
721 |
}
|
722 |
Tcl_SetResult(interp, entryPtr->string, TCL_STATIC);
|
723 |
break;
|
724 |
}
|
725 |
|
726 |
case COMMAND_ICURSOR: {
|
727 |
if (objc != 3) {
|
728 |
Tcl_WrongNumArgs(interp, 2, objv, "pos");
|
729 |
goto error;
|
730 |
}
|
731 |
if (GetEntryIndex(interp, entryPtr, Tcl_GetString(objv[2]),
|
732 |
&entryPtr->insertPos) != TCL_OK) {
|
733 |
goto error;
|
734 |
}
|
735 |
EventuallyRedraw(entryPtr);
|
736 |
break;
|
737 |
}
|
738 |
|
739 |
case COMMAND_INDEX: {
|
740 |
int index;
|
741 |
|
742 |
if (objc != 3) {
|
743 |
Tcl_WrongNumArgs(interp, 2, objv, "string");
|
744 |
goto error;
|
745 |
}
|
746 |
if (GetEntryIndex(interp, entryPtr, Tcl_GetString(objv[2]),
|
747 |
&index) != TCL_OK) {
|
748 |
goto error;
|
749 |
}
|
750 |
Tcl_SetObjResult(interp, Tcl_NewIntObj(index));
|
751 |
break;
|
752 |
}
|
753 |
|
754 |
case COMMAND_INSERT: {
|
755 |
int index;
|
756 |
|
757 |
if (objc != 4) {
|
758 |
Tcl_WrongNumArgs(interp, 2, objv, "index text");
|
759 |
goto error;
|
760 |
}
|
761 |
if (GetEntryIndex(interp, entryPtr, Tcl_GetString(objv[2]),
|
762 |
&index) != TCL_OK) {
|
763 |
goto error;
|
764 |
}
|
765 |
if (entryPtr->state == STATE_NORMAL) {
|
766 |
InsertChars(entryPtr, index, Tcl_GetString(objv[3]));
|
767 |
}
|
768 |
break;
|
769 |
}
|
770 |
|
771 |
case COMMAND_SCAN: {
|
772 |
int x;
|
773 |
char *minorCmd;
|
774 |
|
775 |
if (objc != 4) {
|
776 |
Tcl_WrongNumArgs(interp, 2, objv, "mark|dragto x");
|
777 |
goto error;
|
778 |
}
|
779 |
if (Tcl_GetIntFromObj(interp, objv[3], &x) != TCL_OK) {
|
780 |
goto error;
|
781 |
}
|
782 |
|
783 |
minorCmd = Tcl_GetString(objv[2]);
|
784 |
if (minorCmd[0] == 'm'
|
785 |
&& (strncmp(minorCmd, "mark", strlen(minorCmd)) == 0)) {
|
786 |
entryPtr->scanMarkX = x;
|
787 |
entryPtr->scanMarkIndex = entryPtr->leftIndex;
|
788 |
} else if ((minorCmd[0] == 'd')
|
789 |
&& (strncmp(minorCmd, "dragto", strlen(minorCmd)) == 0)) {
|
790 |
EntryScanTo(entryPtr, x);
|
791 |
} else {
|
792 |
Tcl_AppendResult(interp, "bad scan option \"",
|
793 |
Tcl_GetString(objv[2]), "\": must be mark or dragto",
|
794 |
(char *) NULL);
|
795 |
goto error;
|
796 |
}
|
797 |
break;
|
798 |
}
|
799 |
|
800 |
case COMMAND_SELECTION: {
|
801 |
int index, index2;
|
802 |
|
803 |
if (objc < 3) {
|
804 |
Tcl_WrongNumArgs(interp, 2, objv, "option ?index?");
|
805 |
goto error;
|
806 |
}
|
807 |
|
808 |
/*
|
809 |
* Parse the selection sub-command, using the command
|
810 |
* table "selCommandNames" defined above.
|
811 |
*/
|
812 |
|
813 |
result = Tcl_GetIndexFromObj(interp, objv[2], selCommandNames,
|
814 |
"selection option", 0, &selIndex);
|
815 |
if (result != TCL_OK) {
|
816 |
goto error;
|
817 |
}
|
818 |
|
819 |
switch(selIndex) {
|
820 |
case SELECTION_ADJUST: {
|
821 |
if (objc != 4) {
|
822 |
Tcl_WrongNumArgs(interp, 3, objv, "index");
|
823 |
goto error;
|
824 |
}
|
825 |
if (GetEntryIndex(interp, entryPtr,
|
826 |
Tcl_GetString(objv[3]), &index) != TCL_OK) {
|
827 |
goto error;
|
828 |
}
|
829 |
if (entryPtr->selectFirst >= 0) {
|
830 |
int half1, half2;
|
831 |
|
832 |
half1 = (entryPtr->selectFirst
|
833 |
+ entryPtr->selectLast)/2;
|
834 |
half2 = (entryPtr->selectFirst
|
835 |
+ entryPtr->selectLast + 1)/2;
|
836 |
if (index < half1) {
|
837 |
entryPtr->selectAnchor = entryPtr->selectLast;
|
838 |
} else if (index > half2) {
|
839 |
entryPtr->selectAnchor = entryPtr->selectFirst;
|
840 |
} else {
|
841 |
/*
|
842 |
* We're at about the halfway point in the
|
843 |
* selection; just keep the existing anchor.
|
844 |
*/
|
845 |
}
|
846 |
}
|
847 |
EntrySelectTo(entryPtr, index);
|
848 |
break;
|
849 |
}
|
850 |
|
851 |
case SELECTION_CLEAR: {
|
852 |
if (objc != 3) {
|
853 |
Tcl_WrongNumArgs(interp, 3, objv, (char *) NULL);
|
854 |
goto error;
|
855 |
}
|
856 |
if (entryPtr->selectFirst >= 0) {
|
857 |
entryPtr->selectFirst = -1;
|
858 |
entryPtr->selectLast = -1;
|
859 |
EventuallyRedraw(entryPtr);
|
860 |
}
|
861 |
goto done;
|
862 |
}
|
863 |
|
864 |
case SELECTION_FROM: {
|
865 |
if (objc != 4) {
|
866 |
Tcl_WrongNumArgs(interp, 3, objv, "index");
|
867 |
goto error;
|
868 |
}
|
869 |
if (GetEntryIndex(interp, entryPtr,
|
870 |
Tcl_GetString(objv[3]), &index) != TCL_OK) {
|
871 |
goto error;
|
872 |
}
|
873 |
entryPtr->selectAnchor = index;
|
874 |
break;
|
875 |
}
|
876 |
|
877 |
case SELECTION_PRESENT: {
|
878 |
if (objc != 3) {
|
879 |
Tcl_WrongNumArgs(interp, 3, objv, (char *) NULL);
|
880 |
goto error;
|
881 |
}
|
882 |
if (entryPtr->selectFirst < 0) {
|
883 |
Tcl_SetResult(interp, "0", TCL_STATIC);
|
884 |
} else {
|
885 |
Tcl_SetResult(interp, "1", TCL_STATIC);
|
886 |
}
|
887 |
goto done;
|
888 |
}
|
889 |
|
890 |
case SELECTION_RANGE: {
|
891 |
if (objc != 5) {
|
892 |
Tcl_WrongNumArgs(interp, 3, objv, "start end");
|
893 |
goto error;
|
894 |
}
|
895 |
if (GetEntryIndex(interp, entryPtr,
|
896 |
Tcl_GetString(objv[3]), &index) != TCL_OK) {
|
897 |
goto error;
|
898 |
}
|
899 |
if (GetEntryIndex(interp, entryPtr,
|
900 |
Tcl_GetString(objv[4]),& index2) != TCL_OK) {
|
901 |
goto error;
|
902 |
}
|
903 |
if (index >= index2) {
|
904 |
entryPtr->selectFirst = -1;
|
905 |
entryPtr->selectLast = -1;
|
906 |
} else {
|
907 |
entryPtr->selectFirst = index;
|
908 |
entryPtr->selectLast = index2;
|
909 |
}
|
910 |
if (!(entryPtr->flags & GOT_SELECTION)
|
911 |
&& (entryPtr->exportSelection)) {
|
912 |
Tk_OwnSelection(entryPtr->tkwin, XA_PRIMARY,
|
913 |
EntryLostSelection, (ClientData) entryPtr);
|
914 |
entryPtr->flags |= GOT_SELECTION;
|
915 |
}
|
916 |
EventuallyRedraw(entryPtr);
|
917 |
break;
|
918 |
}
|
919 |
|
920 |
case SELECTION_TO: {
|
921 |
if (objc != 4) {
|
922 |
Tcl_WrongNumArgs(interp, 3, objv, "index");
|
923 |
goto error;
|
924 |
}
|
925 |
if (GetEntryIndex(interp, entryPtr,
|
926 |
Tcl_GetString(objv[3]), &index) != TCL_OK) {
|
927 |
goto error;
|
928 |
}
|
929 |
EntrySelectTo(entryPtr, index);
|
930 |
break;
|
931 |
}
|
932 |
}
|
933 |
break;
|
934 |
}
|
935 |
|
936 |
case COMMAND_VALIDATE: {
|
937 |
int code;
|
938 |
|
939 |
if (objc != 2) {
|
940 |
Tcl_WrongNumArgs(interp, 2, objv, (char *) NULL);
|
941 |
goto error;
|
942 |
}
|
943 |
selIndex = entryPtr->validate;
|
944 |
entryPtr->validate = VALIDATE_ALL;
|
945 |
code = EntryValidateChange(entryPtr, (char *) NULL,
|
946 |
entryPtr->string, -1, VALIDATE_FORCED);
|
947 |
if (entryPtr->validate != VALIDATE_NONE) {
|
948 |
entryPtr->validate = selIndex;
|
949 |
}
|
950 |
Tcl_SetObjResult(interp, Tcl_NewBooleanObj((code == TCL_OK)));
|
951 |
break;
|
952 |
}
|
953 |
|
954 |
case COMMAND_XVIEW: {
|
955 |
int index;
|
956 |
|
957 |
if (objc == 2) {
|
958 |
double first, last;
|
959 |
char buf[TCL_DOUBLE_SPACE * 2];
|
960 |
|
961 |
EntryVisibleRange(entryPtr, &first, &last);
|
962 |
sprintf(buf, "%g %g", first, last);
|
963 |
Tcl_SetResult(interp, buf, TCL_VOLATILE);
|
964 |
goto done;
|
965 |
} else if (objc == 3) {
|
966 |
if (GetEntryIndex(interp, entryPtr, Tcl_GetString(objv[2]),
|
967 |
&index) != TCL_OK) {
|
968 |
goto error;
|
969 |
}
|
970 |
} else {
|
971 |
double fraction;
|
972 |
int count;
|
973 |
|
974 |
index = entryPtr->leftIndex;
|
975 |
switch (Tk_GetScrollInfoObj(interp, objc, objv, &fraction,
|
976 |
&count)) {
|
977 |
case TK_SCROLL_ERROR: {
|
978 |
goto error;
|
979 |
}
|
980 |
case TK_SCROLL_MOVETO: {
|
981 |
index = (int) ((fraction * entryPtr->numChars) + 0.5);
|
982 |
break;
|
983 |
}
|
984 |
case TK_SCROLL_PAGES: {
|
985 |
int charsPerPage;
|
986 |
|
987 |
charsPerPage = ((Tk_Width(entryPtr->tkwin)
|
988 |
- 2 * entryPtr->inset)
|
989 |
/ entryPtr->avgWidth) - 2;
|
990 |
if (charsPerPage < 1) {
|
991 |
charsPerPage = 1;
|
992 |
}
|
993 |
index += count * charsPerPage;
|
994 |
break;
|
995 |
}
|
996 |
case TK_SCROLL_UNITS: {
|
997 |
index += count;
|
998 |
break;
|
999 |
}
|
1000 |
}
|
1001 |
}
|
1002 |
if (index >= entryPtr->numChars) {
|
1003 |
index = entryPtr->numChars - 1;
|
1004 |
}
|
1005 |
if (index < 0) {
|
1006 |
index = 0;
|
1007 |
}
|
1008 |
entryPtr->leftIndex = index;
|
1009 |
entryPtr->flags |= UPDATE_SCROLLBAR;
|
1010 |
EntryComputeGeometry(entryPtr);
|
1011 |
EventuallyRedraw(entryPtr);
|
1012 |
break;
|
1013 |
}
|
1014 |
}
|
1015 |
|
1016 |
done:
|
1017 |
Tcl_Release((ClientData) entryPtr);
|
1018 |
return result;
|
1019 |
|
1020 |
error:
|
1021 |
Tcl_Release((ClientData) entryPtr);
|
1022 |
return TCL_ERROR;
|
1023 |
}
|
1024 |
|
1025 |
/*
|
1026 |
*----------------------------------------------------------------------
|
1027 |
*
|
1028 |
* DestroyEntry --
|
1029 |
*
|
1030 |
* This procedure is invoked by Tcl_EventuallyFree or Tcl_Release
|
1031 |
* to clean up the internal structure of an entry at a safe time
|
1032 |
* (when no-one is using it anymore).
|
1033 |
*
|
1034 |
* Results:
|
1035 |
* None.
|
1036 |
*
|
1037 |
* Side effects:
|
1038 |
* Everything associated with the entry is freed up.
|
1039 |
*
|
1040 |
*----------------------------------------------------------------------
|
1041 |
*/
|
1042 |
|
1043 |
static void
|
1044 |
DestroyEntry(memPtr)
|
1045 |
char *memPtr; /* Info about entry widget. */
|
1046 |
{
|
1047 |
Entry *entryPtr = (Entry *) memPtr;
|
1048 |
entryPtr->flags |= ENTRY_DELETED;
|
1049 |
|
1050 |
Tcl_DeleteCommandFromToken(entryPtr->interp, entryPtr->widgetCmd);
|
1051 |
if (entryPtr->flags & REDRAW_PENDING) {
|
1052 |
Tcl_CancelIdleCall(DisplayEntry, (ClientData) entryPtr);
|
1053 |
}
|
1054 |
|
1055 |
/*
|
1056 |
* Free up all the stuff that requires special handling, then
|
1057 |
* let Tk_FreeOptions handle all the standard option-related
|
1058 |
* stuff.
|
1059 |
*/
|
1060 |
|
1061 |
ckfree(entryPtr->string);
|
1062 |
if (entryPtr->textVarName != NULL) {
|
1063 |
Tcl_UntraceVar(entryPtr->interp, entryPtr->textVarName,
|
1064 |
TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
|
1065 |
EntryTextVarProc, (ClientData) entryPtr);
|
1066 |
}
|
1067 |
if (entryPtr->textGC != None) {
|
1068 |
Tk_FreeGC(entryPtr->display, entryPtr->textGC);
|
1069 |
}
|
1070 |
if (entryPtr->selTextGC != None) {
|
1071 |
Tk_FreeGC(entryPtr->display, entryPtr->selTextGC);
|
1072 |
}
|
1073 |
Tcl_DeleteTimerHandler(entryPtr->insertBlinkHandler);
|
1074 |
if (entryPtr->displayString != entryPtr->string) {
|
1075 |
ckfree(entryPtr->displayString);
|
1076 |
}
|
1077 |
Tk_FreeTextLayout(entryPtr->textLayout);
|
1078 |
Tk_FreeConfigOptions((char *) entryPtr, entryPtr->optionTable,
|
1079 |
entryPtr->tkwin);
|
1080 |
entryPtr->tkwin = NULL;
|
1081 |
ckfree((char *) entryPtr);
|
1082 |
}
|
1083 |
|
1084 |
/*
|
1085 |
*----------------------------------------------------------------------
|
1086 |
*
|
1087 |
* ConfigureEntry --
|
1088 |
*
|
1089 |
* This procedure is called to process an argv/argc list, plus
|
1090 |
* the Tk option database, in order to configure (or reconfigure)
|
1091 |
* an entry widget.
|
1092 |
*
|
1093 |
* Results:
|
1094 |
* The return value is a standard Tcl result. If TCL_ERROR is
|
1095 |
* returned, then the interp's result contains an error message.
|
1096 |
*
|
1097 |
* Side effects:
|
1098 |
* Configuration information, such as colors, border width,
|
1099 |
* etc. get set for entryPtr; old resources get freed,
|
1100 |
* if there were any.
|
1101 |
*
|
1102 |
*----------------------------------------------------------------------
|
1103 |
*/
|
1104 |
|
1105 |
static int
|
1106 |
ConfigureEntry(interp, entryPtr, objc, objv, flags)
|
1107 |
Tcl_Interp *interp; /* Used for error reporting. */
|
1108 |
Entry *entryPtr; /* Information about widget; may or may not
|
1109 |
* already have values for some fields. */
|
1110 |
int objc; /* Number of valid entries in argv. */
|
1111 |
Tcl_Obj *CONST objv[]; /* Argument objects. */
|
1112 |
int flags; /* Flags to pass to Tk_ConfigureWidget. */
|
1113 |
{
|
1114 |
Tk_SavedOptions savedOptions;
|
1115 |
Tcl_Obj *errorResult = NULL;
|
1116 |
int error;
|
1117 |
int oldExport;
|
1118 |
|
1119 |
/*
|
1120 |
* Eliminate any existing trace on a variable monitored by the entry.
|
1121 |
*/
|
1122 |
|
1123 |
if (entryPtr->textVarName != NULL) {
|
1124 |
Tcl_UntraceVar(interp, entryPtr->textVarName,
|
1125 |
TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
|
1126 |
EntryTextVarProc, (ClientData) entryPtr);
|
1127 |
}
|
1128 |
|
1129 |
oldExport = entryPtr->exportSelection;
|
1130 |
|
1131 |
for (error = 0; error <= 1; error++) {
|
1132 |
if (!error) {
|
1133 |
/*
|
1134 |
* First pass: set options to new values.
|
1135 |
*/
|
1136 |
|
1137 |
if (Tk_SetOptions(interp, (char *) entryPtr,
|
1138 |
entryPtr->optionTable, objc, objv,
|
1139 |
entryPtr->tkwin, &savedOptions, (int *) NULL) != TCL_OK) {
|
1140 |
continue;
|
1141 |
}
|
1142 |
} else {
|
1143 |
/*
|
1144 |
* Second pass: restore options to old values.
|
1145 |
*/
|
1146 |
|
1147 |
errorResult = Tcl_GetObjResult(interp);
|
1148 |
Tcl_IncrRefCount(errorResult);
|
1149 |
Tk_RestoreSavedOptions(&savedOptions);
|
1150 |
}
|
1151 |
|
1152 |
/*
|
1153 |
* A few other options also need special processing, such as parsing
|
1154 |
* the geometry and setting the background from a 3-D border.
|
1155 |
*/
|
1156 |
|
1157 |
Tk_SetBackgroundFromBorder(entryPtr->tkwin, entryPtr->normalBorder);
|
1158 |
|
1159 |
if (entryPtr->insertWidth <= 0) {
|
1160 |
entryPtr->insertWidth = 2;
|
1161 |
}
|
1162 |
if (entryPtr->insertBorderWidth > entryPtr->insertWidth/2) {
|
1163 |
entryPtr->insertBorderWidth = entryPtr->insertWidth/2;
|
1164 |
}
|
1165 |
|
1166 |
/*
|
1167 |
* Restart the cursor timing sequence in case the on-time or
|
1168 |
* off-time just changed. Set validate temporarily to none,
|
1169 |
* so the configure doesn't cause it to be triggered.
|
1170 |
*/
|
1171 |
|
1172 |
if (entryPtr->flags & GOT_FOCUS) {
|
1173 |
int validate = entryPtr->validate;
|
1174 |
entryPtr->validate = VALIDATE_NONE;
|
1175 |
EntryFocusProc(entryPtr, 1);
|
1176 |
entryPtr->validate = validate;
|
1177 |
}
|
1178 |
|
1179 |
/*
|
1180 |
* Claim the selection if we've suddenly started exporting it.
|
1181 |
*/
|
1182 |
|
1183 |
if (entryPtr->exportSelection && (!oldExport)
|
1184 |
&& (entryPtr->selectFirst != -1)
|
1185 |
&& !(entryPtr->flags & GOT_SELECTION)) {
|
1186 |
Tk_OwnSelection(entryPtr->tkwin, XA_PRIMARY, EntryLostSelection,
|
1187 |
(ClientData) entryPtr);
|
1188 |
entryPtr->flags |= GOT_SELECTION;
|
1189 |
}
|
1190 |
|
1191 |
/*
|
1192 |
* Recompute the window's geometry and arrange for it to be
|
1193 |
* redisplayed.
|
1194 |
*/
|
1195 |
|
1196 |
Tk_SetInternalBorder(entryPtr->tkwin,
|
1197 |
entryPtr->borderWidth + entryPtr->highlightWidth);
|
1198 |
if (entryPtr->highlightWidth <= 0) {
|
1199 |
entryPtr->highlightWidth = 0;
|
1200 |
}
|
1201 |
entryPtr->inset = entryPtr->highlightWidth
|
1202 |
+ entryPtr->borderWidth + XPAD;
|
1203 |
break;
|
1204 |
}
|
1205 |
if (!error) {
|
1206 |
Tk_FreeSavedOptions(&savedOptions);
|
1207 |
}
|
1208 |
|
1209 |
/*
|
1210 |
* If the entry is tied to the value of a variable, then set up
|
1211 |
* a trace on the variable's value, create the variable if it doesn't
|
1212 |
* exist, and set the entry's value from the variable's value.
|
1213 |
*/
|
1214 |
|
1215 |
if (entryPtr->textVarName != NULL) {
|
1216 |
char *value;
|
1217 |
|
1218 |
value = Tcl_GetVar(interp, entryPtr->textVarName, TCL_GLOBAL_ONLY);
|
1219 |
if (value == NULL) {
|
1220 |
EntryValueChanged(entryPtr);
|
1221 |
} else {
|
1222 |
EntrySetValue(entryPtr, value);
|
1223 |
}
|
1224 |
Tcl_TraceVar(interp, entryPtr->textVarName,
|
1225 |
TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
|
1226 |
EntryTextVarProc, (ClientData) entryPtr);
|
1227 |
}
|
1228 |
|
1229 |
EntryWorldChanged((ClientData) entryPtr);
|
1230 |
if (error) {
|
1231 |
Tcl_SetObjResult(interp, errorResult);
|
1232 |
Tcl_DecrRefCount(errorResult);
|
1233 |
return TCL_ERROR;
|
1234 |
} else {
|
1235 |
return TCL_OK;
|
1236 |
}
|
1237 |
}
|
1238 |
|
1239 |
/*
|
1240 |
*---------------------------------------------------------------------------
|
1241 |
*
|
1242 |
* EntryWorldChanged --
|
1243 |
*
|
1244 |
* This procedure is called when the world has changed in some
|
1245 |
* way and the widget needs to recompute all its graphics contexts
|
1246 |
* and determine its new geometry.
|
1247 |
*
|
1248 |
* Results:
|
1249 |
* None.
|
1250 |
*
|
1251 |
* Side effects:
|
1252 |
* Entry will be relayed out and redisplayed.
|
1253 |
*
|
1254 |
*---------------------------------------------------------------------------
|
1255 |
*/
|
1256 |
|
1257 |
static void
|
1258 |
EntryWorldChanged(instanceData)
|
1259 |
ClientData instanceData; /* Information about widget. */
|
1260 |
{
|
1261 |
XGCValues gcValues;
|
1262 |
GC gc = None;
|
1263 |
unsigned long mask;
|
1264 |
Entry *entryPtr;
|
1265 |
|
1266 |
entryPtr = (Entry *) instanceData;
|
1267 |
|
1268 |
entryPtr->avgWidth = Tk_TextWidth(entryPtr->tkfont, "0", 1);
|
1269 |
if (entryPtr->avgWidth == 0) {
|
1270 |
entryPtr->avgWidth = 1;
|
1271 |
}
|
1272 |
|
1273 |
if (entryPtr->normalBorder != NULL) {
|
1274 |
Tk_SetBackgroundFromBorder(entryPtr->tkwin, entryPtr->normalBorder);
|
1275 |
}
|
1276 |
|
1277 |
gcValues.foreground = entryPtr->fgColorPtr->pixel;
|
1278 |
gcValues.font = Tk_FontId(entryPtr->tkfont);
|
1279 |
gcValues.graphics_exposures = False;
|
1280 |
mask = GCForeground | GCFont | GCGraphicsExposures;
|
1281 |
gc = Tk_GetGC(entryPtr->tkwin, mask, &gcValues);
|
1282 |
if (entryPtr->textGC != None) {
|
1283 |
Tk_FreeGC(entryPtr->display, entryPtr->textGC);
|
1284 |
}
|
1285 |
entryPtr->textGC = gc;
|
1286 |
|
1287 |
gcValues.foreground = entryPtr->selFgColorPtr->pixel;
|
1288 |
gcValues.font = Tk_FontId(entryPtr->tkfont);
|
1289 |
mask = GCForeground | GCFont;
|
1290 |
gc = Tk_GetGC(entryPtr->tkwin, mask, &gcValues);
|
1291 |
if (entryPtr->selTextGC != None) {
|
1292 |
Tk_FreeGC(entryPtr->display, entryPtr->selTextGC);
|
1293 |
}
|
1294 |
entryPtr->selTextGC = gc;
|
1295 |
|
1296 |
/*
|
1297 |
* Recompute the window's geometry and arrange for it to be
|
1298 |
* redisplayed.
|
1299 |
*/
|
1300 |
|
1301 |
EntryComputeGeometry(entryPtr);
|
1302 |
entryPtr->flags |= UPDATE_SCROLLBAR;
|
1303 |
EventuallyRedraw(entryPtr);
|
1304 |
}
|
1305 |
|
1306 |
/*
|
1307 |
*--------------------------------------------------------------
|
1308 |
*
|
1309 |
* DisplayEntry --
|
1310 |
*
|
1311 |
* This procedure redraws the contents of an entry window.
|
1312 |
*
|
1313 |
* Results:
|
1314 |
* None.
|
1315 |
*
|
1316 |
* Side effects:
|
1317 |
* Information appears on the screen.
|
1318 |
*
|
1319 |
*--------------------------------------------------------------
|
1320 |
*/
|
1321 |
|
1322 |
static void
|
1323 |
DisplayEntry(clientData)
|
1324 |
ClientData clientData; /* Information about window. */
|
1325 |
{
|
1326 |
Entry *entryPtr = (Entry *) clientData;
|
1327 |
Tk_Window tkwin = entryPtr->tkwin;
|
1328 |
int baseY, selStartX, selEndX, cursorX;
|
1329 |
int xBound;
|
1330 |
Tk_FontMetrics fm;
|
1331 |
Pixmap pixmap;
|
1332 |
int showSelection;
|
1333 |
|
1334 |
entryPtr->flags &= ~REDRAW_PENDING;
|
1335 |
if ((entryPtr->tkwin == NULL) || !Tk_IsMapped(tkwin)) {
|
1336 |
return;
|
1337 |
}
|
1338 |
|
1339 |
Tk_GetFontMetrics(entryPtr->tkfont, &fm);
|
1340 |
|
1341 |
/*
|
1342 |
* Update the scrollbar if that's needed.
|
1343 |
*/
|
1344 |
|
1345 |
if (entryPtr->flags & UPDATE_SCROLLBAR) {
|
1346 |
entryPtr->flags &= ~UPDATE_SCROLLBAR;
|
1347 |
EntryUpdateScrollbar(entryPtr);
|
1348 |
}
|
1349 |
|
1350 |
/*
|
1351 |
* In order to avoid screen flashes, this procedure redraws the
|
1352 |
* textual area of the entry into off-screen memory, then copies
|
1353 |
* it back on-screen in a single operation. This means there's
|
1354 |
* no point in time where the on-screen image has been cleared.
|
1355 |
*/
|
1356 |
|
1357 |
pixmap = Tk_GetPixmap(entryPtr->display, Tk_WindowId(tkwin),
|
1358 |
Tk_Width(tkwin), Tk_Height(tkwin), Tk_Depth(tkwin));
|
1359 |
|
1360 |
/*
|
1361 |
* Compute x-coordinate of the pixel just after last visible
|
1362 |
* one, plus vertical position of baseline of text.
|
1363 |
*/
|
1364 |
|
1365 |
xBound = Tk_Width(tkwin) - entryPtr->inset;
|
1366 |
baseY = (Tk_Height(tkwin) + fm.ascent - fm.descent) / 2;
|
1367 |
|
1368 |
/*
|
1369 |
* On Windows and Mac, we need to hide the selection whenever we
|
1370 |
* don't have the focus.
|
1371 |
*/
|
1372 |
|
1373 |
#ifdef ALWAYS_SHOW_SELECTION
|
1374 |
showSelection = 1;
|
1375 |
#else
|
1376 |
showSelection = (entryPtr->flags & GOT_FOCUS);
|
1377 |
#endif
|
1378 |
|
1379 |
/*
|
1380 |
* Draw the background in three layers. From bottom to top the
|
1381 |
* layers are: normal background, selection background, and
|
1382 |
* insertion cursor background.
|
1383 |
*/
|
1384 |
|
1385 |
Tk_Fill3DRectangle(tkwin, pixmap, entryPtr->normalBorder,
|
1386 |
0, 0, Tk_Width(tkwin), Tk_Height(tkwin), 0, TK_RELIEF_FLAT);
|
1387 |
|
1388 |
if (showSelection
|
1389 |
&& (entryPtr->selectLast > entryPtr->leftIndex)) {
|
1390 |
if (entryPtr->selectFirst <= entryPtr->leftIndex) {
|
1391 |
selStartX = entryPtr->leftX;
|
1392 |
} else {
|
1393 |
Tk_CharBbox(entryPtr->textLayout, entryPtr->selectFirst,
|
1394 |
&selStartX, NULL, NULL, NULL);
|
1395 |
selStartX += entryPtr->layoutX;
|
1396 |
}
|
1397 |
if ((selStartX - entryPtr->selBorderWidth) < xBound) {
|
1398 |
Tk_CharBbox(entryPtr->textLayout, entryPtr->selectLast,
|
1399 |
&selEndX, NULL, NULL, NULL);
|
1400 |
selEndX += entryPtr->layoutX;
|
1401 |
Tk_Fill3DRectangle(tkwin, pixmap, entryPtr->selBorder,
|
1402 |
selStartX - entryPtr->selBorderWidth,
|
1403 |
baseY - fm.ascent - entryPtr->selBorderWidth,
|
1404 |
(selEndX - selStartX) + 2*entryPtr->selBorderWidth,
|
1405 |
(fm.ascent + fm.descent) + 2*entryPtr->selBorderWidth,
|
1406 |
entryPtr->selBorderWidth, TK_RELIEF_RAISED);
|
1407 |
}
|
1408 |
}
|
1409 |
|
1410 |
/*
|
1411 |
* Draw a special background for the insertion cursor, overriding
|
1412 |
* even the selection background. As a special hack to keep the
|
1413 |
* cursor visible when the insertion cursor color is the same as
|
1414 |
* the color for selected text (e.g., on mono displays), write
|
1415 |
* background in the cursor area (instead of nothing) when the
|
1416 |
* cursor isn't on. Otherwise the selection would hide the cursor.
|
1417 |
*/
|
1418 |
|
1419 |
if ((entryPtr->insertPos >= entryPtr->leftIndex)
|
1420 |
&& (entryPtr->state == STATE_NORMAL)
|
1421 |
&& (entryPtr->flags & GOT_FOCUS)) {
|
1422 |
Tk_CharBbox(entryPtr->textLayout, entryPtr->insertPos, &cursorX, NULL,
|
1423 |
NULL, NULL);
|
1424 |
cursorX += entryPtr->layoutX;
|
1425 |
cursorX -= (entryPtr->insertWidth)/2;
|
1426 |
if (cursorX < xBound) {
|
1427 |
if (entryPtr->flags & CURSOR_ON) {
|
1428 |
Tk_Fill3DRectangle(tkwin, pixmap, entryPtr->insertBorder,
|
1429 |
cursorX, baseY - fm.ascent, entryPtr->insertWidth,
|
1430 |
fm.ascent + fm.descent, entryPtr->insertBorderWidth,
|
1431 |
TK_RELIEF_RAISED);
|
1432 |
} else if (entryPtr->insertBorder == entryPtr->selBorder) {
|
1433 |
Tk_Fill3DRectangle(tkwin, pixmap, entryPtr->normalBorder,
|
1434 |
cursorX, baseY - fm.ascent, entryPtr->insertWidth,
|
1435 |
fm.ascent + fm.descent, 0, TK_RELIEF_FLAT);
|
1436 |
}
|
1437 |
}
|
1438 |
}
|
1439 |
|
1440 |
/*
|
1441 |
* Draw the text in two pieces: first the unselected portion, then the
|
1442 |
* selected portion on top of it.
|
1443 |
*/
|
1444 |
|
1445 |
Tk_DrawTextLayout(entryPtr->display, pixmap, entryPtr->textGC,
|
1446 |
entryPtr->textLayout, entryPtr->layoutX, entryPtr->layoutY,
|
1447 |
entryPtr->leftIndex, entryPtr->numChars);
|
1448 |
|
1449 |
if (showSelection
|
1450 |
&& (entryPtr->selTextGC != entryPtr->textGC)
|
1451 |
&& (entryPtr->selectFirst < entryPtr->selectLast)) {
|
1452 |
int selFirst;
|
1453 |
|
1454 |
if (entryPtr->selectFirst < entryPtr->leftIndex) {
|
1455 |
selFirst = entryPtr->leftIndex;
|
1456 |
} else {
|
1457 |
selFirst = entryPtr->selectFirst;
|
1458 |
}
|
1459 |
Tk_DrawTextLayout(entryPtr->display, pixmap, entryPtr->selTextGC,
|
1460 |
entryPtr->textLayout, entryPtr->layoutX, entryPtr->layoutY,
|
1461 |
selFirst, entryPtr->selectLast);
|
1462 |
}
|
1463 |
|
1464 |
/*
|
1465 |
* Draw the border and focus highlight last, so they will overwrite
|
1466 |
* any text that extends past the viewable part of the window.
|
1467 |
*/
|
1468 |
|
1469 |
if (entryPtr->relief != TK_RELIEF_FLAT) {
|
1470 |
Tk_Draw3DRectangle(tkwin, pixmap, entryPtr->normalBorder,
|
1471 |
entryPtr->highlightWidth, entryPtr->highlightWidth,
|
1472 |
Tk_Width(tkwin) - 2 * entryPtr->highlightWidth,
|
1473 |
Tk_Height(tkwin) - 2 * entryPtr->highlightWidth,
|
1474 |
entryPtr->borderWidth, entryPtr->relief);
|
1475 |
}
|
1476 |
if (entryPtr->highlightWidth != 0) {
|
1477 |
GC fgGC, bgGC;
|
1478 |
|
1479 |
bgGC = Tk_GCForColor(entryPtr->highlightBgColorPtr, pixmap);
|
1480 |
if (entryPtr->flags & GOT_FOCUS) {
|
1481 |
fgGC = Tk_GCForColor(entryPtr->highlightColorPtr, pixmap);
|
1482 |
TkpDrawHighlightBorder(tkwin, fgGC, bgGC,
|
1483 |
entryPtr->highlightWidth, pixmap);
|
1484 |
} else {
|
1485 |
TkpDrawHighlightBorder(tkwin, bgGC, bgGC,
|
1486 |
entryPtr->highlightWidth, pixmap);
|
1487 |
}
|
1488 |
}
|
1489 |
|
1490 |
/*
|
1491 |
* Everything's been redisplayed; now copy the pixmap onto the screen
|
1492 |
* and free up the pixmap.
|
1493 |
*/
|
1494 |
|
1495 |
XCopyArea(entryPtr->display, pixmap, Tk_WindowId(tkwin), entryPtr->textGC,
|
1496 |
0, 0, (unsigned) Tk_Width(tkwin), (unsigned) Tk_Height(tkwin),
|
1497 |
0, 0);
|
1498 |
Tk_FreePixmap(entryPtr->display, pixmap);
|
1499 |
entryPtr->flags &= ~BORDER_NEEDED;
|
1500 |
}
|
1501 |
|
1502 |
/*
|
1503 |
*----------------------------------------------------------------------
|
1504 |
*
|
1505 |
* EntryComputeGeometry --
|
1506 |
*
|
1507 |
* This procedure is invoked to recompute information about where
|
1508 |
* in its window an entry's string will be displayed. It also
|
1509 |
* computes the requested size for the window.
|
1510 |
*
|
1511 |
* Results:
|
1512 |
* None.
|
1513 |
*
|
1514 |
* Side effects:
|
1515 |
* The leftX and tabOrigin fields are recomputed for entryPtr,
|
1516 |
* and leftIndex may be adjusted. Tk_GeometryRequest is called
|
1517 |
* to register the desired dimensions for the window.
|
1518 |
*
|
1519 |
*----------------------------------------------------------------------
|
1520 |
*/
|
1521 |
|
1522 |
static void
|
1523 |
EntryComputeGeometry(entryPtr)
|
1524 |
Entry *entryPtr; /* Widget record for entry. */
|
1525 |
{
|
1526 |
int totalLength, overflow, maxOffScreen, rightX;
|
1527 |
int height, width, i;
|
1528 |
Tk_FontMetrics fm;
|
1529 |
char *p;
|
1530 |
|
1531 |
if (entryPtr->displayString != entryPtr->string) {
|
1532 |
ckfree(entryPtr->displayString);
|
1533 |
entryPtr->displayString = entryPtr->string;
|
1534 |
entryPtr->numDisplayBytes = entryPtr->numBytes;
|
1535 |
}
|
1536 |
|
1537 |
/*
|
1538 |
* If we're displaying a special character instead of the value of
|
1539 |
* the entry, recompute the displayString.
|
1540 |
*/
|
1541 |
|
1542 |
if (entryPtr->showChar != NULL) {
|
1543 |
Tcl_UniChar ch;
|
1544 |
char buf[TCL_UTF_MAX];
|
1545 |
int size;
|
1546 |
|
1547 |
/*
|
1548 |
* Normalize the special character so we can safely duplicate it
|
1549 |
* in the display string. If we didn't do this, then two malformed
|
1550 |
* characters might end up looking like one valid UTF character in
|
1551 |
* the resulting string.
|
1552 |
*/
|
1553 |
|
1554 |
Tcl_UtfToUniChar(entryPtr->showChar, &ch);
|
1555 |
size = Tcl_UniCharToUtf(ch, buf);
|
1556 |
|
1557 |
entryPtr->numDisplayBytes = entryPtr->numChars * size;
|
1558 |
entryPtr->displayString =
|
1559 |
(char *) ckalloc((unsigned) (entryPtr->numDisplayBytes + 1));
|
1560 |
|
1561 |
p = entryPtr->displayString;
|
1562 |
for (i = entryPtr->numChars; --i >= 0; ) {
|
1563 |
p += Tcl_UniCharToUtf(ch, p);
|
1564 |
}
|
1565 |
*p = '\0';
|
1566 |
}
|
1567 |
Tk_FreeTextLayout(entryPtr->textLayout);
|
1568 |
entryPtr->textLayout = Tk_ComputeTextLayout(entryPtr->tkfont,
|
1569 |
entryPtr->displayString, entryPtr->numChars, 0,
|
1570 |
entryPtr->justify, TK_IGNORE_NEWLINES, &totalLength, &height);
|
1571 |
|
1572 |
entryPtr->layoutY = (Tk_Height(entryPtr->tkwin) - height) / 2;
|
1573 |
|
1574 |
/*
|
1575 |
* Recompute where the leftmost character on the display will
|
1576 |
* be drawn (entryPtr->leftX) and adjust leftIndex if necessary
|
1577 |
* so that we don't let characters hang off the edge of the
|
1578 |
* window unless the entire window is full.
|
1579 |
*/
|
1580 |
|
1581 |
overflow = totalLength - (Tk_Width(entryPtr->tkwin) - 2*entryPtr->inset);
|
1582 |
if (overflow <= 0) {
|
1583 |
entryPtr->leftIndex = 0;
|
1584 |
if (entryPtr->justify == TK_JUSTIFY_LEFT) {
|
1585 |
entryPtr->leftX = entryPtr->inset;
|
1586 |
} else if (entryPtr->justify == TK_JUSTIFY_RIGHT) {
|
1587 |
entryPtr->leftX = Tk_Width(entryPtr->tkwin) - entryPtr->inset
|
1588 |
- totalLength;
|
1589 |
} else {
|
1590 |
entryPtr->leftX = (Tk_Width(entryPtr->tkwin) - totalLength)/2;
|
1591 |
}
|
1592 |
entryPtr->layoutX = entryPtr->leftX;
|
1593 |
} else {
|
1594 |
/*
|
1595 |
* The whole string can't fit in the window. Compute the
|
1596 |
* maximum number of characters that may be off-screen to
|
1597 |
* the left without leaving empty space on the right of the
|
1598 |
* window, then don't let leftIndex be any greater than that.
|
1599 |
*/
|
1600 |
|
1601 |
maxOffScreen = Tk_PointToChar(entryPtr->textLayout, overflow, 0);
|
1602 |
Tk_CharBbox(entryPtr->textLayout, maxOffScreen,
|
1603 |
&rightX, NULL, NULL, NULL);
|
1604 |
if (rightX < overflow) {
|
1605 |
maxOffScreen++;
|
1606 |
}
|
1607 |
if (entryPtr->leftIndex > maxOffScreen) {
|
1608 |
entryPtr->leftIndex = maxOffScreen;
|
1609 |
}
|
1610 |
Tk_CharBbox(entryPtr->textLayout, entryPtr->leftIndex, &rightX,
|
1611 |
NULL, NULL, NULL);
|
1612 |
entryPtr->leftX = entryPtr->inset;
|
1613 |
entryPtr->layoutX = entryPtr->leftX - rightX;
|
1614 |
}
|
1615 |
|
1616 |
Tk_GetFontMetrics(entryPtr->tkfont, &fm);
|
1617 |
height = fm.linespace + 2*entryPtr->inset + 2*(YPAD-XPAD);
|
1618 |
if (entryPtr->prefWidth > 0) {
|
1619 |
width = entryPtr->prefWidth*entryPtr->avgWidth + 2*entryPtr->inset;
|
1620 |
} else {
|
1621 |
if (totalLength == 0) {
|
1622 |
width = entryPtr->avgWidth + 2*entryPtr->inset;
|
1623 |
} else {
|
1624 |
width = totalLength + 2*entryPtr->inset;
|
1625 |
}
|
1626 |
}
|
1627 |
Tk_GeometryRequest(entryPtr->tkwin, width, height);
|
1628 |
}
|
1629 |
|
1630 |
/*
|
1631 |
*----------------------------------------------------------------------
|
1632 |
*
|
1633 |
* InsertChars --
|
1634 |
*
|
1635 |
* Add new characters to an entry widget.
|
1636 |
*
|
1637 |
* Results:
|
1638 |
* None.
|
1639 |
*
|
1640 |
* Side effects:
|
1641 |
* New information gets added to entryPtr; it will be redisplayed
|
1642 |
* soon, but not necessarily immediately.
|
1643 |
*
|
1644 |
*----------------------------------------------------------------------
|
1645 |
*/
|
1646 |
|
1647 |
static void
|
1648 |
InsertChars(entryPtr, index, value)
|
1649 |
Entry *entryPtr; /* Entry that is to get the new elements. */
|
1650 |
int index; /* Add the new elements before this
|
1651 |
* character index. */
|
1652 |
char *value; /* New characters to add (NULL-terminated
|
1653 |
* string). */
|
1654 |
{
|
1655 |
int byteIndex, byteCount, oldChars, charsAdded, newByteCount;
|
1656 |
char *new, *string;
|
1657 |
|
1658 |
string = entryPtr->string;
|
1659 |
byteIndex = Tcl_UtfAtIndex(string, index) - string;
|
1660 |
byteCount = strlen(value);
|
1661 |
if (byteCount == 0) {
|
1662 |
return;
|
1663 |
}
|
1664 |
|
1665 |
newByteCount = entryPtr->numBytes + byteCount + 1;
|
1666 |
new = (char *) ckalloc((unsigned) newByteCount);
|
1667 |
memcpy(new, string, (size_t) byteIndex);
|
1668 |
strcpy(new + byteIndex, value);
|
1669 |
strcpy(new + byteIndex + byteCount, string + byteIndex);
|
1670 |
|
1671 |
if ((entryPtr->validate == VALIDATE_KEY ||
|
1672 |
entryPtr->validate == VALIDATE_ALL) &&
|
1673 |
EntryValidateChange(entryPtr, value, new, index,
|
1674 |
VALIDATE_INSERT) != TCL_OK) {
|
1675 |
ckfree(new);
|
1676 |
return;
|
1677 |
}
|
1678 |
|
1679 |
ckfree(string);
|
1680 |
entryPtr->string = new;
|
1681 |
|
1682 |
/*
|
1683 |
* The following construction is used because inserting improperly
|
1684 |
* formed UTF-8 sequences between other improperly formed UTF-8
|
1685 |
* sequences could result in actually forming valid UTF-8 sequences;
|
1686 |
* the number of characters added may not be Tcl_NumUtfChars(string, -1),
|
1687 |
* because of context. The actual number of characters added is how
|
1688 |
* many characters are in the string now minus the number that
|
1689 |
* used to be there.
|
1690 |
*/
|
1691 |
|
1692 |
oldChars = entryPtr->numChars;
|
1693 |
entryPtr->numChars = Tcl_NumUtfChars(new, -1);
|
1694 |
charsAdded = entryPtr->numChars - oldChars;
|
1695 |
entryPtr->numBytes += byteCount;
|
1696 |
|
1697 |
if (entryPtr->displayString == string) {
|
1698 |
entryPtr->displayString = new;
|
1699 |
entryPtr->numDisplayBytes = entryPtr->numBytes;
|
1700 |
}
|
1701 |
|
1702 |
/*
|
1703 |
* Inserting characters invalidates all indexes into the string.
|
1704 |
* Touch up the indexes so that they still refer to the same
|
1705 |
* characters (at new positions). When updating the selection
|
1706 |
* end-points, don't include the new text in the selection unless
|
1707 |
* it was completely surrounded by the selection.
|
1708 |
*/
|
1709 |
|
1710 |
if (entryPtr->selectFirst >= index) {
|
1711 |
entryPtr->selectFirst += charsAdded;
|
1712 |
}
|
1713 |
if (entryPtr->selectLast > index) {
|
1714 |
entryPtr->selectLast += charsAdded;
|
1715 |
}
|
1716 |
if ((entryPtr->selectAnchor > index)
|
1717 |
|| (entryPtr->selectFirst >= index)) {
|
1718 |
entryPtr->selectAnchor += charsAdded;
|
1719 |
}
|
1720 |
if (entryPtr->leftIndex > index) {
|
1721 |
entryPtr->leftIndex += charsAdded;
|
1722 |
}
|
1723 |
if (entryPtr->insertPos >= index) {
|
1724 |
entryPtr->insertPos += charsAdded;
|
1725 |
}
|
1726 |
EntryValueChanged(entryPtr);
|
1727 |
}
|
1728 |
|
1729 |
/*
|
1730 |
*----------------------------------------------------------------------
|
1731 |
*
|
1732 |
* DeleteChars --
|
1733 |
*
|
1734 |
* Remove one or more characters from an entry widget.
|
1735 |
*
|
1736 |
* Results:
|
1737 |
* None.
|
1738 |
*
|
1739 |
* Side effects:
|
1740 |
* Memory gets freed, the entry gets modified and (eventually)
|
1741 |
* redisplayed.
|
1742 |
*
|
1743 |
*----------------------------------------------------------------------
|
1744 |
*/
|
1745 |
|
1746 |
static void
|
1747 |
DeleteChars(entryPtr, index, count)
|
1748 |
Entry *entryPtr; /* Entry widget to modify. */
|
1749 |
int index; /* Index of first character to delete. */
|
1750 |
int count; /* How many characters to delete. */
|
1751 |
{
|
1752 |
int byteIndex, byteCount, newByteCount;
|
1753 |
char *new, *string, *todelete;
|
1754 |
|
1755 |
if ((index + count) > entryPtr->numChars) {
|
1756 |
count = entryPtr->numChars - index;
|
1757 |
}
|
1758 |
if (count <= 0) {
|
1759 |
return;
|
1760 |
}
|
1761 |
|
1762 |
string = entryPtr->string;
|
1763 |
byteIndex = Tcl_UtfAtIndex(string, index) - string;
|
1764 |
byteCount = Tcl_UtfAtIndex(string + byteIndex, count) - (string + byteIndex);
|
1765 |
|
1766 |
newByteCount = entryPtr->numBytes + 1 - byteCount;
|
1767 |
new = (char *) ckalloc((unsigned) newByteCount);
|
1768 |
memcpy(new, string, (size_t) byteIndex);
|
1769 |
strcpy(new + byteIndex, string + byteIndex + byteCount);
|
1770 |
|
1771 |
todelete = (char *) ckalloc((unsigned) (byteCount + 1));
|
1772 |
memcpy(todelete, string + byteIndex, (size_t) byteCount);
|
1773 |
todelete[byteCount] = '\0';
|
1774 |
|
1775 |
if ((entryPtr->validate == VALIDATE_KEY ||
|
1776 |
entryPtr->validate == VALIDATE_ALL) &&
|
1777 |
EntryValidateChange(entryPtr, todelete, new, index,
|
1778 |
VALIDATE_DELETE) != TCL_OK) {
|
1779 |
ckfree(new);
|
1780 |
ckfree(todelete);
|
1781 |
return;
|
1782 |
}
|
1783 |
|
1784 |
ckfree(todelete);
|
1785 |
ckfree(entryPtr->string);
|
1786 |
entryPtr->string = new;
|
1787 |
entryPtr->numChars -= count;
|
1788 |
entryPtr->numBytes -= byteCount;
|
1789 |
|
1790 |
if (entryPtr->displayString == string) {
|
1791 |
entryPtr->displayString = new;
|
1792 |
entryPtr->numDisplayBytes = entryPtr->numBytes;
|
1793 |
}
|
1794 |
|
1795 |
/*
|
1796 |
* Deleting characters results in the remaining characters being
|
1797 |
* renumbered. Update the various indexes into the string to reflect
|
1798 |
* this change.
|
1799 |
*/
|
1800 |
|
1801 |
if (entryPtr->selectFirst >= index) {
|
1802 |
if (entryPtr->selectFirst >= (index + count)) {
|
1803 |
entryPtr->selectFirst -= count;
|
1804 |
} else {
|
1805 |
entryPtr->selectFirst = index;
|
1806 |
}
|
1807 |
}
|
1808 |
if (entryPtr->selectLast >= index) {
|
1809 |
if (entryPtr->selectLast >= (index + count)) {
|
1810 |
entryPtr->selectLast -= count;
|
1811 |
} else {
|
1812 |
entryPtr->selectLast = index;
|
1813 |
}
|
1814 |
}
|
1815 |
if (entryPtr->selectLast <= entryPtr->selectFirst) {
|
1816 |
entryPtr->selectFirst = -1;
|
1817 |
entryPtr->selectLast = -1;
|
1818 |
}
|
1819 |
if (entryPtr->selectAnchor >= index) {
|
1820 |
if (entryPtr->selectAnchor >= (index+count)) {
|
1821 |
entryPtr->selectAnchor -= count;
|
1822 |
} else {
|
1823 |
entryPtr->selectAnchor = index;
|
1824 |
}
|
1825 |
}
|
1826 |
if (entryPtr->leftIndex > index) {
|
1827 |
if (entryPtr->leftIndex >= (index + count)) {
|
1828 |
entryPtr->leftIndex -= count;
|
1829 |
} else {
|
1830 |
entryPtr->leftIndex = index;
|
1831 |
}
|
1832 |
}
|
1833 |
if (entryPtr->insertPos >= index) {
|
1834 |
if (entryPtr->insertPos >= (index + count)) {
|
1835 |
entryPtr->insertPos -= count;
|
1836 |
} else {
|
1837 |
entryPtr->insertPos = index;
|
1838 |
}
|
1839 |
}
|
1840 |
EntryValueChanged(entryPtr);
|
1841 |
}
|
1842 |
|
1843 |
/*
|
1844 |
*----------------------------------------------------------------------
|
1845 |
*
|
1846 |
* EntryValueChanged --
|
1847 |
*
|
1848 |
* This procedure is invoked when characters are inserted into
|
1849 |
* an entry or deleted from it. It updates the entry's associated
|
1850 |
* variable, if there is one, and does other bookkeeping such
|
1851 |
* as arranging for redisplay.
|
1852 |
*
|
1853 |
* Results:
|
1854 |
* None.
|
1855 |
*
|
1856 |
* Side effects:
|
1857 |
* None.
|
1858 |
*
|
1859 |
*----------------------------------------------------------------------
|
1860 |
*/
|
1861 |
|
1862 |
static void
|
1863 |
EntryValueChanged(entryPtr)
|
1864 |
Entry *entryPtr; /* Entry whose value just changed. */
|
1865 |
{
|
1866 |
char *newValue;
|
1867 |
|
1868 |
if (entryPtr->textVarName == NULL) {
|
1869 |
newValue = NULL;
|
1870 |
} else {
|
1871 |
newValue = Tcl_SetVar(entryPtr->interp, entryPtr->textVarName,
|
1872 |
entryPtr->string, TCL_GLOBAL_ONLY);
|
1873 |
}
|
1874 |
|
1875 |
if ((newValue != NULL) && (strcmp(newValue, entryPtr->string) != 0)) {
|
1876 |
/*
|
1877 |
* The value of the variable is different than what we asked for.
|
1878 |
* This means that a trace on the variable modified it. In this
|
1879 |
* case our trace procedure wasn't invoked since the modification
|
1880 |
* came while a trace was already active on the variable. So,
|
1881 |
* update our value to reflect the variable's latest value.
|
1882 |
*/
|
1883 |
|
1884 |
EntrySetValue(entryPtr, newValue);
|
1885 |
} else {
|
1886 |
/*
|
1887 |
* Arrange for redisplay.
|
1888 |
*/
|
1889 |
|
1890 |
entryPtr->flags |= UPDATE_SCROLLBAR;
|
1891 |
EntryComputeGeometry(entryPtr);
|
1892 |
EventuallyRedraw(entryPtr);
|
1893 |
}
|
1894 |
}
|
1895 |
|
1896 |
/*
|
1897 |
*----------------------------------------------------------------------
|
1898 |
*
|
1899 |
* EntrySetValue --
|
1900 |
*
|
1901 |
* Replace the contents of a text entry with a given value. This
|
1902 |
* procedure is invoked when updating the entry from the entry's
|
1903 |
* associated variable.
|
1904 |
*
|
1905 |
* Results:
|
1906 |
* None.
|
1907 |
*
|
1908 |
* Side effects:
|
1909 |
* The string displayed in the entry will change. The selection,
|
1910 |
* insertion point, and view may have to be adjusted to keep them
|
1911 |
* within the bounds of the new string. Note: this procedure does
|
1912 |
* *not* update the entry's associated variable, since that could
|
1913 |
* result in an infinite loop.
|
1914 |
*
|
1915 |
*----------------------------------------------------------------------
|
1916 |
*/
|
1917 |
|
1918 |
static void
|
1919 |
EntrySetValue(entryPtr, value)
|
1920 |
Entry *entryPtr; /* Entry whose value is to be changed. */
|
1921 |
char *value; /* New text to display in entry. */
|
1922 |
{
|
1923 |
char *oldSource;
|
1924 |
int code, valueLen, malloced = 0;
|
1925 |
|
1926 |
if (strcmp(value, entryPtr->string) == 0) {
|
1927 |
return;
|
1928 |
}
|
1929 |
valueLen = strlen(value);
|
1930 |
|
1931 |
if (entryPtr->flags & VALIDATE_VAR) {
|
1932 |
entryPtr->flags |= VALIDATE_ABORT;
|
1933 |
} else {
|
1934 |
/*
|
1935 |
* If we validate, we create a copy of the value, as it may
|
1936 |
* point to volatile memory, like the value of the -textvar
|
1937 |
* which may get freed during validation
|
1938 |
*/
|
1939 |
oldSource = (char *) ckalloc((unsigned) (valueLen + 1));
|
1940 |
strcpy(oldSource, value);
|
1941 |
value = oldSource;
|
1942 |
malloced = 1;
|
1943 |
|
1944 |
entryPtr->flags |= VALIDATE_VAR;
|
1945 |
code = EntryValidateChange(entryPtr, (char *) NULL, value, -1,
|
1946 |
VALIDATE_FORCED);
|
1947 |
entryPtr->flags &= ~VALIDATE_VAR;
|
1948 |
/*
|
1949 |
* If VALIDATE_ABORT has been set, then this operation should be
|
1950 |
* aborted because the validatecommand did something else instead
|
1951 |
*/
|
1952 |
if (entryPtr->flags & VALIDATE_ABORT) {
|
1953 |
entryPtr->flags &= ~VALIDATE_ABORT;
|
1954 |
ckfree(value);
|
1955 |
return;
|
1956 |
}
|
1957 |
}
|
1958 |
|
1959 |
oldSource = entryPtr->string;
|
1960 |
ckfree(entryPtr->string);
|
1961 |
|
1962 |
if (malloced) {
|
1963 |
entryPtr->string = value;
|
1964 |
} else {
|
1965 |
entryPtr->string = (char *) ckalloc((unsigned) (valueLen + 1));
|
1966 |
strcpy(entryPtr->string, value);
|
1967 |
}
|
1968 |
entryPtr->numBytes = valueLen;
|
1969 |
entryPtr->numChars = Tcl_NumUtfChars(value, valueLen);
|
1970 |
|
1971 |
if (entryPtr->displayString == oldSource) {
|
1972 |
entryPtr->displayString = entryPtr->string;
|
1973 |
entryPtr->numDisplayBytes = entryPtr->numBytes;
|
1974 |
}
|
1975 |
|
1976 |
if (entryPtr->selectFirst >= 0) {
|
1977 |
if (entryPtr->selectFirst >= entryPtr->numChars) {
|
1978 |
entryPtr->selectFirst = -1;
|
1979 |
entryPtr->selectLast = -1;
|
1980 |
} else if (entryPtr->selectLast > entryPtr->numChars) {
|
1981 |
entryPtr->selectLast = entryPtr->numChars;
|
1982 |
}
|
1983 |
}
|
1984 |
if (entryPtr->leftIndex >= entryPtr->numChars) {
|
1985 |
if (entryPtr->numChars > 0) {
|
1986 |
entryPtr->leftIndex = entryPtr->numChars - 1;
|
1987 |
} else {
|
1988 |
entryPtr->leftIndex = 0;
|
1989 |
}
|
1990 |
}
|
1991 |
if (entryPtr->insertPos > entryPtr->numChars) {
|
1992 |
entryPtr->insertPos = entryPtr->numChars;
|
1993 |
}
|
1994 |
|
1995 |
entryPtr->flags |= UPDATE_SCROLLBAR;
|
1996 |
EntryComputeGeometry(entryPtr);
|
1997 |
EventuallyRedraw(entryPtr);
|
1998 |
}
|
1999 |
|
2000 |
/*
|
2001 |
*--------------------------------------------------------------
|
2002 |
*
|
2003 |
* EntryEventProc --
|
2004 |
*
|
2005 |
* This procedure is invoked by the Tk dispatcher for various
|
2006 |
* events on entryes.
|
2007 |
*
|
2008 |
* Results:
|
2009 |
* None.
|
2010 |
*
|
2011 |
* Side effects:
|
2012 |
* When the window gets deleted, internal structures get
|
2013 |
* cleaned up. When it gets exposed, it is redisplayed.
|
2014 |
*
|
2015 |
*--------------------------------------------------------------
|
2016 |
*/
|
2017 |
|
2018 |
static void
|
2019 |
EntryEventProc(clientData, eventPtr)
|
2020 |
ClientData clientData; /* Information about window. */
|
2021 |
XEvent *eventPtr; /* Information about event. */
|
2022 |
{
|
2023 |
Entry *entryPtr = (Entry *) clientData;
|
2024 |
if (eventPtr->type == Expose) {
|
2025 |
EventuallyRedraw(entryPtr);
|
2026 |
entryPtr->flags |= BORDER_NEEDED;
|
2027 |
} else if (eventPtr->type == DestroyNotify) {
|
2028 |
DestroyEntry((char *) clientData);
|
2029 |
} else if (eventPtr->type == ConfigureNotify) {
|
2030 |
Tcl_Preserve((ClientData) entryPtr);
|
2031 |
entryPtr->flags |= UPDATE_SCROLLBAR;
|
2032 |
EntryComputeGeometry(entryPtr);
|
2033 |
EventuallyRedraw(entryPtr);
|
2034 |
Tcl_Release((ClientData) entryPtr);
|
2035 |
} else if (eventPtr->type == FocusIn) {
|
2036 |
if (eventPtr->xfocus.detail != NotifyInferior) {
|
2037 |
EntryFocusProc(entryPtr, 1);
|
2038 |
}
|
2039 |
} else if (eventPtr->type == FocusOut) {
|
2040 |
if (eventPtr->xfocus.detail != NotifyInferior) {
|
2041 |
EntryFocusProc(entryPtr, 0);
|
2042 |
}
|
2043 |
}
|
2044 |
}
|
2045 |
|
2046 |
/*
|
2047 |
*----------------------------------------------------------------------
|
2048 |
*
|
2049 |
* EntryCmdDeletedProc --
|
2050 |
*
|
2051 |
* This procedure is invoked when a widget command is deleted. If
|
2052 |
* the widget isn't already in the process of being destroyed,
|
2053 |
* this command destroys it.
|
2054 |
*
|
2055 |
* Results:
|
2056 |
* None.
|
2057 |
*
|
2058 |
* Side effects:
|
2059 |
* The widget is destroyed.
|
2060 |
*
|
2061 |
*----------------------------------------------------------------------
|
2062 |
*/
|
2063 |
|
2064 |
static void
|
2065 |
EntryCmdDeletedProc(clientData)
|
2066 |
ClientData clientData; /* Pointer to widget record for widget. */
|
2067 |
{
|
2068 |
Entry *entryPtr = (Entry *) clientData;
|
2069 |
|
2070 |
/*
|
2071 |
* This procedure could be invoked either because the window was
|
2072 |
* destroyed and the command was then deleted (in which case tkwin
|
2073 |
* is NULL) or because the command was deleted, and then this procedure
|
2074 |
* destroys the widget.
|
2075 |
*/
|
2076 |
|
2077 |
if (!(entryPtr->flags & ENTRY_DELETED)) {
|
2078 |
Tk_DestroyWindow(entryPtr->tkwin);
|
2079 |
}
|
2080 |
}
|
2081 |
|
2082 |
/*
|
2083 |
*---------------------------------------------------------------------------
|
2084 |
*
|
2085 |
* GetEntryIndex --
|
2086 |
*
|
2087 |
* Parse an index into an entry and return either its value
|
2088 |
* or an error.
|
2089 |
*
|
2090 |
* Results:
|
2091 |
* A standard Tcl result. If all went well, then *indexPtr is
|
2092 |
* filled in with the character index (into entryPtr) corresponding to
|
2093 |
* string. The index value is guaranteed to lie between 0 and
|
2094 |
* the number of characters in the string, inclusive. If an
|
2095 |
* error occurs then an error message is left in the interp's result.
|
2096 |
*
|
2097 |
* Side effects:
|
2098 |
* None.
|
2099 |
*
|
2100 |
*---------------------------------------------------------------------------
|
2101 |
*/
|
2102 |
|
2103 |
static int
|
2104 |
GetEntryIndex(interp, entryPtr, string, indexPtr)
|
2105 |
Tcl_Interp *interp; /* For error messages. */
|
2106 |
Entry *entryPtr; /* Entry for which the index is being
|
2107 |
* specified. */
|
2108 |
char *string; /* Specifies character in entryPtr. */
|
2109 |
int *indexPtr; /* Where to store converted character
|
2110 |
* index. */
|
2111 |
{
|
2112 |
size_t length;
|
2113 |
|
2114 |
length = strlen(string);
|
2115 |
|
2116 |
if (string[0] == 'a') {
|
2117 |
if (strncmp(string, "anchor", length) == 0) {
|
2118 |
*indexPtr = entryPtr->selectAnchor;
|
2119 |
} else {
|
2120 |
badIndex:
|
2121 |
|
2122 |
/*
|
2123 |
* Some of the paths here leave messages in the interp's result,
|
2124 |
* so we have to clear it out before storing our own message.
|
2125 |
*/
|
2126 |
|
2127 |
Tcl_SetResult(interp, (char *) NULL, TCL_STATIC);
|
2128 |
Tcl_AppendResult(interp, "bad entry index \"", string,
|
2129 |
"\"", (char *) NULL);
|
2130 |
return TCL_ERROR;
|
2131 |
}
|
2132 |
} else if (string[0] == 'e') {
|
2133 |
if (strncmp(string, "end", length) == 0) {
|
2134 |
*indexPtr = entryPtr->numChars;
|
2135 |
} else {
|
2136 |
goto badIndex;
|
2137 |
}
|
2138 |
} else if (string[0] == 'i') {
|
2139 |
if (strncmp(string, "insert", length) == 0) {
|
2140 |
*indexPtr = entryPtr->insertPos;
|
2141 |
} else {
|
2142 |
goto badIndex;
|
2143 |
}
|
2144 |
} else if (string[0] == 's') {
|
2145 |
if (entryPtr->selectFirst < 0) {
|
2146 |
Tcl_SetResult(interp, "selection isn't in entry", TCL_STATIC);
|
2147 |
return TCL_ERROR;
|
2148 |
}
|
2149 |
if (length < 5) {
|
2150 |
goto badIndex;
|
2151 |
}
|
2152 |
if (strncmp(string, "sel.first", length) == 0) {
|
2153 |
*indexPtr = entryPtr->selectFirst;
|
2154 |
} else if (strncmp(string, "sel.last", length) == 0) {
|
2155 |
*indexPtr = entryPtr->selectLast;
|
2156 |
} else {
|
2157 |
goto badIndex;
|
2158 |
}
|
2159 |
} else if (string[0] == '@') {
|
2160 |
int x, roundUp;
|
2161 |
|
2162 |
if (Tcl_GetInt(interp, string + 1, &x) != TCL_OK) {
|
2163 |
goto badIndex;
|
2164 |
}
|
2165 |
if (x < entryPtr->inset) {
|
2166 |
x = entryPtr->inset;
|
2167 |
}
|
2168 |
roundUp = 0;
|
2169 |
if (x >= (Tk_Width(entryPtr->tkwin) - entryPtr->inset)) {
|
2170 |
x = Tk_Width(entryPtr->tkwin) - entryPtr->inset - 1;
|
2171 |
roundUp = 1;
|
2172 |
}
|
2173 |
*indexPtr = Tk_PointToChar(entryPtr->textLayout,
|
2174 |
x - entryPtr->layoutX, 0);
|
2175 |
|
2176 |
/*
|
2177 |
* Special trick: if the x-position was off-screen to the right,
|
2178 |
* round the index up to refer to the character just after the
|
2179 |
* last visible one on the screen. This is needed to enable the
|
2180 |
* last character to be selected, for example.
|
2181 |
*/
|
2182 |
|
2183 |
if (roundUp && (*indexPtr < entryPtr->numChars)) {
|
2184 |
*indexPtr += 1;
|
2185 |
}
|
2186 |
} else {
|
2187 |
if (Tcl_GetInt(interp, string, indexPtr) != TCL_OK) {
|
2188 |
goto badIndex;
|
2189 |
}
|
2190 |
if (*indexPtr < 0){
|
2191 |
*indexPtr = 0;
|
2192 |
} else if (*indexPtr > entryPtr->numChars) {
|
2193 |
*indexPtr = entryPtr->numChars;
|
2194 |
}
|
2195 |
}
|
2196 |
return TCL_OK;
|
2197 |
}
|
2198 |
|
2199 |
/*
|
2200 |
*----------------------------------------------------------------------
|
2201 |
*
|
2202 |
* EntryScanTo --
|
2203 |
*
|
2204 |
* Given a y-coordinate (presumably of the curent mouse location)
|
2205 |
* drag the view in the window to implement the scan operation.
|
2206 |
*
|
2207 |
* Results:
|
2208 |
* None.
|
2209 |
*
|
2210 |
* Side effects:
|
2211 |
* The view in the window may change.
|
2212 |
*
|
2213 |
*----------------------------------------------------------------------
|
2214 |
*/
|
2215 |
|
2216 |
static void
|
2217 |
EntryScanTo(entryPtr, x)
|
2218 |
Entry *entryPtr; /* Information about widget. */
|
2219 |
int x; /* X-coordinate to use for scan operation. */
|
2220 |
{
|
2221 |
int newLeftIndex;
|
2222 |
|
2223 |
/*
|
2224 |
* Compute new leftIndex for entry by amplifying the difference
|
2225 |
* between the current position and the place where the scan
|
2226 |
* started (the "mark" position). If we run off the left or right
|
2227 |
* side of the entry, then reset the mark point so that the current
|
2228 |
* position continues to correspond to the edge of the window.
|
2229 |
* This means that the picture will start dragging as soon as the
|
2230 |
* mouse reverses direction (without this reset, might have to slide
|
2231 |
* mouse a long ways back before the picture starts moving again).
|
2232 |
*/
|
2233 |
|
2234 |
newLeftIndex = entryPtr->scanMarkIndex
|
2235 |
- (10 * (x - entryPtr->scanMarkX)) / entryPtr->avgWidth;
|
2236 |
if (newLeftIndex >= entryPtr->numChars) {
|
2237 |
newLeftIndex = entryPtr->scanMarkIndex = entryPtr->numChars - 1;
|
2238 |
entryPtr->scanMarkX = x;
|
2239 |
}
|
2240 |
if (newLeftIndex < 0) {
|
2241 |
newLeftIndex = entryPtr->scanMarkIndex = 0;
|
2242 |
entryPtr->scanMarkX = x;
|
2243 |
}
|
2244 |
|
2245 |
if (newLeftIndex != entryPtr->leftIndex) {
|
2246 |
entryPtr->leftIndex = newLeftIndex;
|
2247 |
entryPtr->flags |= UPDATE_SCROLLBAR;
|
2248 |
EntryComputeGeometry(entryPtr);
|
2249 |
if (newLeftIndex != entryPtr->leftIndex) {
|
2250 |
entryPtr->scanMarkIndex = entryPtr->leftIndex;
|
2251 |
entryPtr->scanMarkX = x;
|
2252 |
}
|
2253 |
EventuallyRedraw(entryPtr);
|
2254 |
}
|
2255 |
}
|
2256 |
|
2257 |
/*
|
2258 |
*----------------------------------------------------------------------
|
2259 |
*
|
2260 |
* EntrySelectTo --
|
2261 |
*
|
2262 |
* Modify the selection by moving its un-anchored end. This could
|
2263 |
* make the selection either larger or smaller.
|
2264 |
*
|
2265 |
* Results:
|
2266 |
* None.
|
2267 |
*
|
2268 |
* Side effects:
|
2269 |
* The selection changes.
|
2270 |
*
|
2271 |
*----------------------------------------------------------------------
|
2272 |
*/
|
2273 |
|
2274 |
static void
|
2275 |
EntrySelectTo(entryPtr, index)
|
2276 |
Entry *entryPtr; /* Information about widget. */
|
2277 |
int index; /* Character index of element that is to
|
2278 |
* become the "other" end of the selection. */
|
2279 |
{
|
2280 |
int newFirst, newLast;
|
2281 |
|
2282 |
/*
|
2283 |
* Grab the selection if we don't own it already.
|
2284 |
*/
|
2285 |
|
2286 |
if (!(entryPtr->flags & GOT_SELECTION) && (entryPtr->exportSelection)) {
|
2287 |
Tk_OwnSelection(entryPtr->tkwin, XA_PRIMARY, EntryLostSelection,
|
2288 |
(ClientData) entryPtr);
|
2289 |
entryPtr->flags |= GOT_SELECTION;
|
2290 |
}
|
2291 |
|
2292 |
/*
|
2293 |
* Pick new starting and ending points for the selection.
|
2294 |
*/
|
2295 |
|
2296 |
if (entryPtr->selectAnchor > entryPtr->numChars) {
|
2297 |
entryPtr->selectAnchor = entryPtr->numChars;
|
2298 |
}
|
2299 |
if (entryPtr->selectAnchor <= index) {
|
2300 |
newFirst = entryPtr->selectAnchor;
|
2301 |
newLast = index;
|
2302 |
} else {
|
2303 |
newFirst = index;
|
2304 |
newLast = entryPtr->selectAnchor;
|
2305 |
if (newLast < 0) {
|
2306 |
newFirst = newLast = -1;
|
2307 |
}
|
2308 |
}
|
2309 |
if ((entryPtr->selectFirst == newFirst)
|
2310 |
&& (entryPtr->selectLast == newLast)) {
|
2311 |
return;
|
2312 |
}
|
2313 |
entryPtr->selectFirst = newFirst;
|
2314 |
entryPtr->selectLast = newLast;
|
2315 |
EventuallyRedraw(entryPtr);
|
2316 |
}
|
2317 |
|
2318 |
/*
|
2319 |
*----------------------------------------------------------------------
|
2320 |
*
|
2321 |
* EntryFetchSelection --
|
2322 |
*
|
2323 |
* This procedure is called back by Tk when the selection is
|
2324 |
* requested by someone. It returns part or all of the selection
|
2325 |
* in a buffer provided by the caller.
|
2326 |
*
|
2327 |
* Results:
|
2328 |
* The return value is the number of non-NULL bytes stored
|
2329 |
* at buffer. Buffer is filled (or partially filled) with a
|
2330 |
* NULL-terminated string containing part or all of the selection,
|
2331 |
* as given by offset and maxBytes.
|
2332 |
*
|
2333 |
* Side effects:
|
2334 |
* None.
|
2335 |
*
|
2336 |
*----------------------------------------------------------------------
|
2337 |
*/
|
2338 |
|
2339 |
static int
|
2340 |
EntryFetchSelection(clientData, offset, buffer, maxBytes)
|
2341 |
ClientData clientData; /* Information about entry widget. */
|
2342 |
int offset; /* Byte offset within selection of first
|
2343 |
* character to be returned. */
|
2344 |
char *buffer; /* Location in which to place selection. */
|
2345 |
int maxBytes; /* Maximum number of bytes to place at
|
2346 |
* buffer, not including terminating NULL
|
2347 |
* character. */
|
2348 |
{
|
2349 |
Entry *entryPtr = (Entry *) clientData;
|
2350 |
int byteCount;
|
2351 |
char *string, *selStart, *selEnd;
|
2352 |
|
2353 |
if ((entryPtr->selectFirst < 0) || !(entryPtr->exportSelection)) {
|
2354 |
return -1;
|
2355 |
}
|
2356 |
string = entryPtr->displayString;
|
2357 |
selStart = Tcl_UtfAtIndex(string, entryPtr->selectFirst);
|
2358 |
selEnd = Tcl_UtfAtIndex(selStart,
|
2359 |
entryPtr->selectLast - entryPtr->selectFirst);
|
2360 |
byteCount = selEnd - selStart - offset;
|
2361 |
if (byteCount > maxBytes) {
|
2362 |
byteCount = maxBytes;
|
2363 |
}
|
2364 |
if (byteCount <= 0) {
|
2365 |
return 0;
|
2366 |
}
|
2367 |
memcpy(buffer, selStart + offset, (size_t) byteCount);
|
2368 |
buffer[byteCount] = '\0';
|
2369 |
return byteCount;
|
2370 |
}
|
2371 |
|
2372 |
/*
|
2373 |
*----------------------------------------------------------------------
|
2374 |
*
|
2375 |
* EntryLostSelection --
|
2376 |
*
|
2377 |
* This procedure is called back by Tk when the selection is
|
2378 |
* grabbed away from an entry widget.
|
2379 |
*
|
2380 |
* Results:
|
2381 |
* None.
|
2382 |
*
|
2383 |
* Side effects:
|
2384 |
* The existing selection is unhighlighted, and the window is
|
2385 |
* marked as not containing a selection.
|
2386 |
*
|
2387 |
*----------------------------------------------------------------------
|
2388 |
*/
|
2389 |
|
2390 |
static void
|
2391 |
EntryLostSelection(clientData)
|
2392 |
ClientData clientData; /* Information about entry widget. */
|
2393 |
{
|
2394 |
Entry *entryPtr = (Entry *) clientData;
|
2395 |
|
2396 |
entryPtr->flags &= ~GOT_SELECTION;
|
2397 |
|
2398 |
/*
|
2399 |
* On Windows and Mac systems, we want to remember the selection
|
2400 |
* for the next time the focus enters the window. On Unix, we need
|
2401 |
* to clear the selection since it is always visible.
|
2402 |
*/
|
2403 |
|
2404 |
#ifdef ALWAYS_SHOW_SELECTION
|
2405 |
if ((entryPtr->selectFirst >= 0) && entryPtr->exportSelection) {
|
2406 |
entryPtr->selectFirst = -1;
|
2407 |
entryPtr->selectLast = -1;
|
2408 |
EventuallyRedraw(entryPtr);
|
2409 |
}
|
2410 |
#endif
|
2411 |
}
|
2412 |
|
2413 |
/*
|
2414 |
*----------------------------------------------------------------------
|
2415 |
*
|
2416 |
* EventuallyRedraw --
|
2417 |
*
|
2418 |
* Ensure that an entry is eventually redrawn on the display.
|
2419 |
*
|
2420 |
* Results:
|
2421 |
* None.
|
2422 |
*
|
2423 |
* Side effects:
|
2424 |
* Information gets redisplayed. Right now we don't do selective
|
2425 |
* redisplays: the whole window will be redrawn. This doesn't
|
2426 |
* seem to hurt performance noticeably, but if it does then this
|
2427 |
* could be changed.
|
2428 |
*
|
2429 |
*----------------------------------------------------------------------
|
2430 |
*/
|
2431 |
|
2432 |
static void
|
2433 |
EventuallyRedraw(entryPtr)
|
2434 |
Entry *entryPtr; /* Information about widget. */
|
2435 |
{
|
2436 |
if ((entryPtr->tkwin == NULL) || !Tk_IsMapped(entryPtr->tkwin)) {
|
2437 |
return;
|
2438 |
}
|
2439 |
|
2440 |
/*
|
2441 |
* Right now we don't do selective redisplays: the whole window
|
2442 |
* will be redrawn. This doesn't seem to hurt performance noticeably,
|
2443 |
* but if it does then this could be changed.
|
2444 |
*/
|
2445 |
|
2446 |
if (!(entryPtr->flags & REDRAW_PENDING)) {
|
2447 |
entryPtr->flags |= REDRAW_PENDING;
|
2448 |
Tcl_DoWhenIdle(DisplayEntry, (ClientData) entryPtr);
|
2449 |
}
|
2450 |
}
|
2451 |
|
2452 |
/*
|
2453 |
*----------------------------------------------------------------------
|
2454 |
*
|
2455 |
* EntryVisibleRange --
|
2456 |
*
|
2457 |
* Return information about the range of the entry that is
|
2458 |
* currently visible.
|
2459 |
*
|
2460 |
* Results:
|
2461 |
* *firstPtr and *lastPtr are modified to hold fractions between
|
2462 |
* 0 and 1 identifying the range of characters visible in the
|
2463 |
* entry.
|
2464 |
*
|
2465 |
* Side effects:
|
2466 |
* None.
|
2467 |
*
|
2468 |
*----------------------------------------------------------------------
|
2469 |
*/
|
2470 |
|
2471 |
static void
|
2472 |
EntryVisibleRange(entryPtr, firstPtr, lastPtr)
|
2473 |
Entry *entryPtr; /* Information about widget. */
|
2474 |
double *firstPtr; /* Return position of first visible
|
2475 |
* character in widget. */
|
2476 |
double *lastPtr; /* Return position of char just after last
|
2477 |
* visible one. */
|
2478 |
{
|
2479 |
int charsInWindow;
|
2480 |
|
2481 |
if (entryPtr->numChars == 0) {
|
2482 |
*firstPtr = 0.0;
|
2483 |
*lastPtr = 1.0;
|
2484 |
} else {
|
2485 |
charsInWindow = Tk_PointToChar(entryPtr->textLayout,
|
2486 |
Tk_Width(entryPtr->tkwin) - entryPtr->inset
|
2487 |
- entryPtr->layoutX - 1, 0);
|
2488 |
if (charsInWindow < entryPtr->numChars) {
|
2489 |
charsInWindow++;
|
2490 |
}
|
2491 |
charsInWindow -= entryPtr->leftIndex;
|
2492 |
if (charsInWindow == 0) {
|
2493 |
charsInWindow = 1;
|
2494 |
}
|
2495 |
|
2496 |
*firstPtr = (double) entryPtr->leftIndex / entryPtr->numChars;
|
2497 |
*lastPtr = (double) (entryPtr->leftIndex + charsInWindow)
|
2498 |
/ entryPtr->numChars;
|
2499 |
}
|
2500 |
}
|
2501 |
|
2502 |
/*
|
2503 |
*----------------------------------------------------------------------
|
2504 |
*
|
2505 |
* EntryUpdateScrollbar --
|
2506 |
*
|
2507 |
* This procedure is invoked whenever information has changed in
|
2508 |
* an entry in a way that would invalidate a scrollbar display.
|
2509 |
* If there is an associated scrollbar, then this procedure updates
|
2510 |
* it by invoking a Tcl command.
|
2511 |
*
|
2512 |
* Results:
|
2513 |
* None.
|
2514 |
*
|
2515 |
* Side effects:
|
2516 |
* A Tcl command is invoked, and an additional command may be
|
2517 |
* invoked to process errors in the command.
|
2518 |
*
|
2519 |
*----------------------------------------------------------------------
|
2520 |
*/
|
2521 |
|
2522 |
static void
|
2523 |
EntryUpdateScrollbar(entryPtr)
|
2524 |
Entry *entryPtr; /* Information about widget. */
|
2525 |
{
|
2526 |
char args[TCL_DOUBLE_SPACE * 2];
|
2527 |
int code;
|
2528 |
double first, last;
|
2529 |
Tcl_Interp *interp;
|
2530 |
|
2531 |
if (entryPtr->scrollCmd == NULL) {
|
2532 |
return;
|
2533 |
}
|
2534 |
|
2535 |
interp = entryPtr->interp;
|
2536 |
Tcl_Preserve((ClientData) interp);
|
2537 |
EntryVisibleRange(entryPtr, &first, &last);
|
2538 |
sprintf(args, " %g %g", first, last);
|
2539 |
code = Tcl_VarEval(interp, entryPtr->scrollCmd, args, (char *) NULL);
|
2540 |
if (code != TCL_OK) {
|
2541 |
Tcl_AddErrorInfo(interp,
|
2542 |
"\n (horizontal scrolling command executed by entry)");
|
2543 |
Tcl_BackgroundError(interp);
|
2544 |
}
|
2545 |
Tcl_SetResult(interp, (char *) NULL, TCL_STATIC);
|
2546 |
Tcl_Release((ClientData) interp);
|
2547 |
}
|
2548 |
|
2549 |
/*
|
2550 |
*----------------------------------------------------------------------
|
2551 |
*
|
2552 |
* EntryBlinkProc --
|
2553 |
*
|
2554 |
* This procedure is called as a timer handler to blink the
|
2555 |
* insertion cursor off and on.
|
2556 |
*
|
2557 |
* Results:
|
2558 |
* None.
|
2559 |
*
|
2560 |
* Side effects:
|
2561 |
* The cursor gets turned on or off, redisplay gets invoked,
|
2562 |
* and this procedure reschedules itself.
|
2563 |
*
|
2564 |
*----------------------------------------------------------------------
|
2565 |
*/
|
2566 |
|
2567 |
static void
|
2568 |
EntryBlinkProc(clientData)
|
2569 |
ClientData clientData; /* Pointer to record describing entry. */
|
2570 |
{
|
2571 |
Entry *entryPtr = (Entry *) clientData;
|
2572 |
|
2573 |
if ((entryPtr->state == STATE_DISABLED) ||
|
2574 |
!(entryPtr->flags & GOT_FOCUS) || (entryPtr->insertOffTime == 0)) {
|
2575 |
return;
|
2576 |
}
|
2577 |
if (entryPtr->flags & CURSOR_ON) {
|
2578 |
entryPtr->flags &= ~CURSOR_ON;
|
2579 |
entryPtr->insertBlinkHandler = Tcl_CreateTimerHandler(
|
2580 |
entryPtr->insertOffTime, EntryBlinkProc, (ClientData) entryPtr);
|
2581 |
} else {
|
2582 |
entryPtr->flags |= CURSOR_ON;
|
2583 |
entryPtr->insertBlinkHandler = Tcl_CreateTimerHandler(
|
2584 |
entryPtr->insertOnTime, EntryBlinkProc, (ClientData) entryPtr);
|
2585 |
}
|
2586 |
EventuallyRedraw(entryPtr);
|
2587 |
}
|
2588 |
|
2589 |
/*
|
2590 |
*----------------------------------------------------------------------
|
2591 |
*
|
2592 |
* EntryFocusProc --
|
2593 |
*
|
2594 |
* This procedure is called whenever the entry gets or loses the
|
2595 |
* input focus. It's also called whenever the window is reconfigured
|
2596 |
* while it has the focus.
|
2597 |
*
|
2598 |
* Results:
|
2599 |
* None.
|
2600 |
*
|
2601 |
* Side effects:
|
2602 |
* The cursor gets turned on or off.
|
2603 |
*
|
2604 |
*----------------------------------------------------------------------
|
2605 |
*/
|
2606 |
|
2607 |
static void
|
2608 |
EntryFocusProc(entryPtr, gotFocus)
|
2609 |
Entry *entryPtr; /* Entry that got or lost focus. */
|
2610 |
int gotFocus; /* 1 means window is getting focus, 0 means
|
2611 |
* it's losing it. */
|
2612 |
{
|
2613 |
Tcl_DeleteTimerHandler(entryPtr->insertBlinkHandler);
|
2614 |
if (gotFocus) {
|
2615 |
entryPtr->flags |= GOT_FOCUS | CURSOR_ON;
|
2616 |
if (entryPtr->insertOffTime != 0) {
|
2617 |
entryPtr->insertBlinkHandler = Tcl_CreateTimerHandler(
|
2618 |
entryPtr->insertOnTime, EntryBlinkProc,
|
2619 |
(ClientData) entryPtr);
|
2620 |
}
|
2621 |
if (entryPtr->validate == VALIDATE_ALL ||
|
2622 |
entryPtr->validate == VALIDATE_FOCUS ||
|
2623 |
entryPtr->validate == VALIDATE_FOCUSIN) {
|
2624 |
EntryValidateChange(entryPtr, (char *) NULL,
|
2625 |
entryPtr->string, -1, VALIDATE_FOCUSIN);
|
2626 |
}
|
2627 |
} else {
|
2628 |
entryPtr->flags &= ~(GOT_FOCUS | CURSOR_ON);
|
2629 |
entryPtr->insertBlinkHandler = (Tcl_TimerToken) NULL;
|
2630 |
if (entryPtr->validate == VALIDATE_ALL ||
|
2631 |
entryPtr->validate == VALIDATE_FOCUS ||
|
2632 |
entryPtr->validate == VALIDATE_FOCUSOUT) {
|
2633 |
EntryValidateChange(entryPtr, (char *) NULL,
|
2634 |
entryPtr->string, -1, VALIDATE_FOCUSOUT);
|
2635 |
}
|
2636 |
}
|
2637 |
EventuallyRedraw(entryPtr);
|
2638 |
}
|
2639 |
|
2640 |
/*
|
2641 |
*--------------------------------------------------------------
|
2642 |
*
|
2643 |
* EntryTextVarProc --
|
2644 |
*
|
2645 |
* This procedure is invoked when someone changes the variable
|
2646 |
* whose contents are to be displayed in an entry.
|
2647 |
*
|
2648 |
* Results:
|
2649 |
* NULL is always returned.
|
2650 |
*
|
2651 |
* Side effects:
|
2652 |
* The text displayed in the entry will change to match the
|
2653 |
* variable.
|
2654 |
*
|
2655 |
*--------------------------------------------------------------
|
2656 |
*/
|
2657 |
|
2658 |
/* ARGSUSED */
|
2659 |
static char *
|
2660 |
EntryTextVarProc(clientData, interp, name1, name2, flags)
|
2661 |
ClientData clientData; /* Information about button. */
|
2662 |
Tcl_Interp *interp; /* Interpreter containing variable. */
|
2663 |
char *name1; /* Not used. */
|
2664 |
char *name2; /* Not used. */
|
2665 |
int flags; /* Information about what happened. */
|
2666 |
{
|
2667 |
Entry *entryPtr = (Entry *) clientData;
|
2668 |
char *value;
|
2669 |
|
2670 |
/*
|
2671 |
* If the variable is unset, then immediately recreate it unless
|
2672 |
* the whole interpreter is going away.
|
2673 |
*/
|
2674 |
|
2675 |
if (flags & TCL_TRACE_UNSETS) {
|
2676 |
if ((flags & TCL_TRACE_DESTROYED) && !(flags & TCL_INTERP_DESTROYED)) {
|
2677 |
Tcl_SetVar(interp, entryPtr->textVarName, entryPtr->string,
|
2678 |
TCL_GLOBAL_ONLY);
|
2679 |
Tcl_TraceVar(interp, entryPtr->textVarName,
|
2680 |
TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
|
2681 |
EntryTextVarProc, clientData);
|
2682 |
}
|
2683 |
return (char *) NULL;
|
2684 |
}
|
2685 |
|
2686 |
/*
|
2687 |
* Update the entry's text with the value of the variable, unless
|
2688 |
* the entry already has that value (this happens when the variable
|
2689 |
* changes value because we changed it because someone typed in
|
2690 |
* the entry).
|
2691 |
*/
|
2692 |
|
2693 |
value = Tcl_GetVar(interp, entryPtr->textVarName, TCL_GLOBAL_ONLY);
|
2694 |
if (value == NULL) {
|
2695 |
value = "";
|
2696 |
}
|
2697 |
EntrySetValue(entryPtr, value);
|
2698 |
return (char *) NULL;
|
2699 |
}
|
2700 |
|
2701 |
/*
|
2702 |
*--------------------------------------------------------------
|
2703 |
*
|
2704 |
* EntryValidate --
|
2705 |
*
|
2706 |
* This procedure is invoked when any character is added or
|
2707 |
* removed from the entry widget, or a focus has trigerred validation.
|
2708 |
*
|
2709 |
* Results:
|
2710 |
* TCL_OK if the validatecommand passes the new string.
|
2711 |
* TCL_BREAK if the vcmd executed OK, but rejects the string.
|
2712 |
* TCL_ERROR if an error occurred while executing the vcmd
|
2713 |
* or a valid Tcl_Bool is not returned.
|
2714 |
*
|
2715 |
* Side effects:
|
2716 |
* An error condition may arise
|
2717 |
*
|
2718 |
*--------------------------------------------------------------
|
2719 |
*/
|
2720 |
|
2721 |
static int
|
2722 |
EntryValidate(entryPtr, cmd)
|
2723 |
register Entry *entryPtr; /* Entry that needs validation. */
|
2724 |
register char *cmd; /* Validation command (NULL-terminated
|
2725 |
* string). */
|
2726 |
{
|
2727 |
register Tcl_Interp *interp = entryPtr->interp;
|
2728 |
int code, bool;
|
2729 |
|
2730 |
code = Tcl_EvalEx(interp, cmd, -1, TCL_EVAL_GLOBAL | TCL_EVAL_DIRECT);
|
2731 |
|
2732 |
if (code != TCL_OK && code != TCL_RETURN) {
|
2733 |
Tcl_AddErrorInfo(interp,
|
2734 |
"\n\t(in validation command executed by entry)");
|
2735 |
Tcl_BackgroundError(interp);
|
2736 |
return TCL_ERROR;
|
2737 |
}
|
2738 |
|
2739 |
if (Tcl_GetBooleanFromObj(interp, Tcl_GetObjResult(interp),
|
2740 |
&bool) != TCL_OK) {
|
2741 |
Tcl_AddErrorInfo(interp,
|
2742 |
"\nvalid boolean not returned by validation command");
|
2743 |
Tcl_BackgroundError(interp);
|
2744 |
Tcl_SetResult(interp, NULL, 0);
|
2745 |
return TCL_ERROR;
|
2746 |
}
|
2747 |
|
2748 |
Tcl_SetResult(interp, NULL, 0);
|
2749 |
return (bool ? TCL_OK : TCL_BREAK);
|
2750 |
}
|
2751 |
|
2752 |
/*
|
2753 |
*--------------------------------------------------------------
|
2754 |
*
|
2755 |
* EntryValidateChange --
|
2756 |
*
|
2757 |
* This procedure is invoked when any character is added or
|
2758 |
* removed from the entry widget, or a focus has trigerred validation.
|
2759 |
*
|
2760 |
* Results:
|
2761 |
* TCL_OK if the validatecommand accepts the new string,
|
2762 |
* TCL_ERROR if any problems occured with validatecommand.
|
2763 |
*
|
2764 |
* Side effects:
|
2765 |
* The insertion/deletion may be aborted, and the
|
2766 |
* validatecommand might turn itself off (if an error
|
2767 |
* or loop condition arises).
|
2768 |
*
|
2769 |
*--------------------------------------------------------------
|
2770 |
*/
|
2771 |
|
2772 |
static int
|
2773 |
EntryValidateChange(entryPtr, change, new, index, type)
|
2774 |
register Entry *entryPtr; /* Entry that needs validation. */
|
2775 |
char *change; /* Characters to be added/deleted
|
2776 |
* (NULL-terminated string). */
|
2777 |
char *new; /* Potential new value of entry string */
|
2778 |
int index; /* index of insert/delete, -1 otherwise */
|
2779 |
int type; /* forced, delete, insert,
|
2780 |
* focusin or focusout */
|
2781 |
{
|
2782 |
int code, varValidate = (entryPtr->flags & VALIDATE_VAR);
|
2783 |
char *p;
|
2784 |
Tcl_DString script;
|
2785 |
|
2786 |
if (entryPtr->validateCmd == NULL ||
|
2787 |
entryPtr->validate == VALIDATE_NONE) {
|
2788 |
return (varValidate ? TCL_ERROR : TCL_OK);
|
2789 |
}
|
2790 |
|
2791 |
/*
|
2792 |
* If we're already validating, then we're hitting a loop condition
|
2793 |
* Return and set validate to 0 to disallow further validations
|
2794 |
* and prevent current validation from finishing
|
2795 |
*/
|
2796 |
if (entryPtr->flags & VALIDATING) {
|
2797 |
entryPtr->validate = VALIDATE_NONE;
|
2798 |
return (varValidate ? TCL_ERROR : TCL_OK);
|
2799 |
}
|
2800 |
|
2801 |
entryPtr->flags |= VALIDATING;
|
2802 |
|
2803 |
/*
|
2804 |
* Now form command string and run through the -validatecommand
|
2805 |
*/
|
2806 |
|
2807 |
Tcl_DStringInit(&script);
|
2808 |
ExpandPercents(entryPtr, entryPtr->validateCmd,
|
2809 |
change, new, index, type, &script);
|
2810 |
Tcl_DStringAppend(&script, "", 1);
|
2811 |
|
2812 |
p = Tcl_DStringValue(&script);
|
2813 |
code = EntryValidate(entryPtr, p);
|
2814 |
Tcl_DStringFree(&script);
|
2815 |
|
2816 |
/*
|
2817 |
* If e->validate has become VALIDATE_NONE during the validation, or
|
2818 |
* we now have VALIDATE_VAR set (from EntrySetValue) and didn't before,
|
2819 |
* it means that a loop condition almost occured. Do not allow
|
2820 |
* this validation result to finish.
|
2821 |
*/
|
2822 |
if (entryPtr->validate == VALIDATE_NONE
|
2823 |
|| (!varValidate && (entryPtr->flags & VALIDATE_VAR))) {
|
2824 |
code = TCL_ERROR;
|
2825 |
}
|
2826 |
/*
|
2827 |
* If validate will return ERROR, then disallow further validations
|
2828 |
* Otherwise, if it didn't accept the new string (returned TCL_BREAK)
|
2829 |
* then eval the invalidCmd (if it's set)
|
2830 |
*/
|
2831 |
if (code == TCL_ERROR) {
|
2832 |
entryPtr->validate = VALIDATE_NONE;
|
2833 |
} else if (code == TCL_BREAK) {
|
2834 |
/*
|
2835 |
* If we were doing forced validation (like via a variable
|
2836 |
* trace) and the command returned 0, the we turn off validation
|
2837 |
* because we assume that textvariables have precedence in
|
2838 |
* managing the value. We also don't call the invcmd, as it
|
2839 |
* may want to do entry manipulation which the setting of the
|
2840 |
* var will later wipe anyway.
|
2841 |
*/
|
2842 |
if (varValidate) {
|
2843 |
entryPtr->validate = VALIDATE_NONE;
|
2844 |
} else if (entryPtr->invalidCmd != NULL) {
|
2845 |
Tcl_DStringInit(&script);
|
2846 |
ExpandPercents(entryPtr, entryPtr->invalidCmd,
|
2847 |
change, new, index, type, &script);
|
2848 |
Tcl_DStringAppend(&script, "", 1);
|
2849 |
p = Tcl_DStringValue(&script);
|
2850 |
if (Tcl_EvalEx(entryPtr->interp, p, -1,
|
2851 |
TCL_EVAL_GLOBAL | TCL_EVAL_DIRECT) != TCL_OK) {
|
2852 |
Tcl_AddErrorInfo(entryPtr->interp,
|
2853 |
"\n\t(in invalidcommand executed by entry)");
|
2854 |
Tcl_BackgroundError(entryPtr->interp);
|
2855 |
code = TCL_ERROR;
|
2856 |
entryPtr->validate = VALIDATE_NONE;
|
2857 |
}
|
2858 |
Tcl_DStringFree(&script);
|
2859 |
}
|
2860 |
}
|
2861 |
|
2862 |
entryPtr->flags &= ~VALIDATING;
|
2863 |
|
2864 |
return code;
|
2865 |
}
|
2866 |
|
2867 |
/*
|
2868 |
*--------------------------------------------------------------
|
2869 |
*
|
2870 |
* ExpandPercents --
|
2871 |
*
|
2872 |
* Given a command and an event, produce a new command
|
2873 |
* by replacing % constructs in the original command
|
2874 |
* with information from the X event.
|
2875 |
*
|
2876 |
* Results:
|
2877 |
* The new expanded command is appended to the dynamic string
|
2878 |
* given by dsPtr.
|
2879 |
*
|
2880 |
* Side effects:
|
2881 |
* None.
|
2882 |
*
|
2883 |
*--------------------------------------------------------------
|
2884 |
*/
|
2885 |
|
2886 |
static void
|
2887 |
ExpandPercents(entryPtr, before, change, new, index, type, dsPtr)
|
2888 |
register Entry *entryPtr; /* Entry that needs validation. */
|
2889 |
register char *before; /* Command containing percent
|
2890 |
* expressions to be replaced. */
|
2891 |
char *change; /* Characters to added/deleted
|
2892 |
* (NULL-terminated string). */
|
2893 |
char *new; /* Potential new value of entry string */
|
2894 |
int index; /* index of insert/delete */
|
2895 |
int type; /* INSERT or DELETE */
|
2896 |
Tcl_DString *dsPtr; /* Dynamic string in which to append
|
2897 |
* new command. */
|
2898 |
{
|
2899 |
int spaceNeeded, cvtFlags; /* Used to substitute string as proper Tcl
|
2900 |
* list element. */
|
2901 |
int number, length;
|
2902 |
register char *string;
|
2903 |
Tcl_UniChar ch;
|
2904 |
char numStorage[2*TCL_INTEGER_SPACE];
|
2905 |
|
2906 |
while (1) {
|
2907 |
if (*before == '\0') {
|
2908 |
break;
|
2909 |
}
|
2910 |
/*
|
2911 |
* Find everything up to the next % character and append it
|
2912 |
* to the result string.
|
2913 |
*/
|
2914 |
|
2915 |
string = before;
|
2916 |
/* No need to convert '%', as it is in ascii range */
|
2917 |
string = Tcl_UtfFindFirst(before, '%');
|
2918 |
if (string == (char *) NULL) {
|
2919 |
Tcl_DStringAppend(dsPtr, before, -1);
|
2920 |
break;
|
2921 |
} else if (string != before) {
|
2922 |
Tcl_DStringAppend(dsPtr, before, string-before);
|
2923 |
before = string;
|
2924 |
}
|
2925 |
|
2926 |
/*
|
2927 |
* There's a percent sequence here. Process it.
|
2928 |
*/
|
2929 |
|
2930 |
before++; /* skip over % */
|
2931 |
if (*before != '\0') {
|
2932 |
before += Tcl_UtfToUniChar(before, &ch);
|
2933 |
} else {
|
2934 |
ch = '%';
|
2935 |
}
|
2936 |
switch (ch) {
|
2937 |
case 'd': /* Type of call that caused validation */
|
2938 |
switch (type) {
|
2939 |
case VALIDATE_INSERT:
|
2940 |
number = 1;
|
2941 |
break;
|
2942 |
case VALIDATE_DELETE:
|
2943 |
number = 0;
|
2944 |
break;
|
2945 |
default:
|
2946 |
number = -1;
|
2947 |
break;
|
2948 |
}
|
2949 |
sprintf(numStorage, "%d", number);
|
2950 |
string = numStorage;
|
2951 |
break;
|
2952 |
case 'i': /* index of insert/delete */
|
2953 |
sprintf(numStorage, "%d", index);
|
2954 |
string = numStorage;
|
2955 |
break;
|
2956 |
case 'P': /* 'Peeked' new value of the string */
|
2957 |
string = new;
|
2958 |
break;
|
2959 |
case 's': /* Current string value of entry */
|
2960 |
string = entryPtr->string;
|
2961 |
break;
|
2962 |
case 'S': /* string to be inserted/deleted, if any */
|
2963 |
string = change;
|
2964 |
break;
|
2965 |
case 'v': /* type of validation currently set */
|
2966 |
string = validateStrings[entryPtr->validate];
|
2967 |
break;
|
2968 |
case 'V': /* type of validation in effect */
|
2969 |
switch (type) {
|
2970 |
case VALIDATE_INSERT:
|
2971 |
case VALIDATE_DELETE:
|
2972 |
string = validateStrings[VALIDATE_KEY];
|
2973 |
break;
|
2974 |
case VALIDATE_FORCED:
|
2975 |
string = "forced";
|
2976 |
break;
|
2977 |
default:
|
2978 |
string = validateStrings[type];
|
2979 |
break;
|
2980 |
}
|
2981 |
break;
|
2982 |
case 'W': /* widget name */
|
2983 |
string = Tk_PathName(entryPtr->tkwin);
|
2984 |
break;
|
2985 |
default:
|
2986 |
length = Tcl_UniCharToUtf(ch, numStorage);
|
2987 |
numStorage[length] = '\0';
|
2988 |
string = numStorage;
|
2989 |
break;
|
2990 |
}
|
2991 |
|
2992 |
spaceNeeded = Tcl_ScanCountedElement(string, -1, &cvtFlags);
|
2993 |
length = Tcl_DStringLength(dsPtr);
|
2994 |
Tcl_DStringSetLength(dsPtr, length + spaceNeeded);
|
2995 |
spaceNeeded = Tcl_ConvertCountedElement(string, -1,
|
2996 |
Tcl_DStringValue(dsPtr) + length,
|
2997 |
cvtFlags | TCL_DONT_USE_BRACES);
|
2998 |
Tcl_DStringSetLength(dsPtr, length + spaceNeeded);
|
2999 |
}
|
3000 |
}
|
3001 |
|
3002 |
/* End of tkentry.c */
|