1438 lines
45 KiB
C
1438 lines
45 KiB
C
/*
|
||
* tkButton.c --
|
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*
|
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* This module implements a collection of button-like
|
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* widgets for the Tk toolkit. The widgets implemented
|
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* include labels, buttons, check buttons, and radio
|
||
* buttons.
|
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*
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* Copyright (c) 1990-1993 The Regents of the University of California.
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* All rights reserved.
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*
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* Permission is hereby granted, without written agreement and without
|
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* license or royalty fees, to use, copy, modify, and distribute this
|
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* software and its documentation for any purpose, provided that the
|
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* above copyright notice and the following two paragraphs appear in
|
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* all copies of this software.
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*
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* IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
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* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
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* OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
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* CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
|
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* AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
|
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* ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
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* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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*/
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#ifndef lint
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static char rcsid[] = "$Header: /user6/ouster/wish/RCS/tkButton.c,v 1.78 93/07/15 16:39:15 ouster Exp $ SPRITE (Berkeley)";
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#endif
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#include "default.h"
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#include "tkConfig.h"
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#include "tkInt.h"
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/*
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* A data structure of the following type is kept for each
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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 button. NULL
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* means that the window has been destroyed. */
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Display *display; /* Display containing widget. Needed to
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* free up resources after tkwin is gone. */
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Tcl_Interp *interp; /* Interpreter associated with button. */
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int type; /* Type of widget: restricts operations
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* that may be performed on widget. See
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* below for possible values. */
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/*
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* Information about what's in the button.
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*/
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char *text; /* Text to display in button (malloc'ed)
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* or NULL. */
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int textLength; /* # of characters in text. */
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char *textVarName; /* Name of variable (malloc'ed) or NULL.
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* If non-NULL, button displays the contents
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* of this variable. */
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Pixmap bitmap; /* Bitmap to display or None. If not None
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* then text and textVar are ignored. */
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/*
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* Information used when displaying widget:
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*/
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Tk_Uid state; /* State of button for display purposes:
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* normal, active, or disabled. */
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Tk_3DBorder normalBorder; /* Structure used to draw 3-D
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* border and background when window
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* isn't active. NULL means no such
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* border exists. */
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Tk_3DBorder activeBorder; /* Structure used to draw 3-D
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* border and background when window
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* is active. NULL means no such
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* border exists. */
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int borderWidth; /* Width of border. */
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int relief; /* 3-d effect: TK_RELIEF_RAISED, etc. */
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XFontStruct *fontPtr; /* Information about text font, or NULL. */
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XColor *normalFg; /* Foreground color in normal mode. */
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XColor *activeFg; /* Foreground color in active mode. NULL
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* means use normalFg instead. */
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XColor *disabledFg; /* Foreground color when disabled. NULL
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* means use normalFg with a 50% stipple
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* instead. */
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GC normalTextGC; /* GC for drawing text in normal mode. Also
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* used to copy from off-screen pixmap onto
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* screen. */
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GC activeTextGC; /* GC for drawing text in active mode (NULL
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* means use normalTextGC). */
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Pixmap gray; /* Pixmap for displaying disabled text if
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* disabledFg is NULL. */
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GC disabledGC; /* Used to produce disabled effect. If
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* disabledFg isn't NULL, this GC is used to
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* draw button text or icon. Otherwise
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* text or icon is drawn with normalGC and
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* this GC is used to stipple background
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* across it. */
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int leftBearing; /* Distance from origin of text to its leftmost
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* drawn pixel, in pixels (positive measures
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* to the right). */
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int rightBearing; /* Amount text sticks right from its origin. */
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int width, height; /* If > 0, these specify dimensions to request
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* for window, in characters for text and in
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* pixels for bitmaps. In this case the actual
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* size of the text string or bitmap is
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* ignored in computing desired window size. */
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int padX, padY; /* Extra space around text or bitmap (pixels
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* on each side). */
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Tk_Anchor anchor; /* Where text/bitmap should be displayed
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* inside button region. */
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XColor *selectorFg; /* Color for selector. */
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GC selectorGC; /* For drawing highlight when this button
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* is in selected state. */
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int selectorSpace; /* Horizontal space (in pixels) allocated for
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* display of selector. */
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int selectorDiameter; /* Diameter of selector, in pixels. */
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/*
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* For check and radio buttons, the fields below are used
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* to manage the variable indicating the button's state.
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*/
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char *selVarName; /* Name of variable used to control selected
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* state of button. Malloc'ed (if
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* not NULL). */
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char *onValue; /* Value to store in variable when
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* this button is selected. Malloc'ed (if
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* not NULL). */
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char *offValue; /* Value to store in variable when this
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* button isn't selected. Malloc'ed
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* (if not NULL). Valid only for check
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* buttons. */
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/*
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* Miscellaneous information:
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*/
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Cursor cursor; /* Current cursor for window, or None. */
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char *command; /* Command to execute when button is
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* invoked; valid for buttons only.
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* If not NULL, it's malloc-ed. */
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int flags; /* Various flags; see below for
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* definitions. */
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} Button;
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/*
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* Possible "type" values for buttons. These are the kinds of
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* widgets supported by this file. The ordering of the type
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* numbers is significant: greater means more features and is
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* used in the code.
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*/
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#define TYPE_LABEL 0
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#define TYPE_BUTTON 1
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#define TYPE_CHECK_BUTTON 2
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#define TYPE_RADIO_BUTTON 3
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/*
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* Class names for buttons, indexed by one of the type values above.
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*/
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static char *classNames[] = {"Label", "Button", "Checkbutton", "Radiobutton"};
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/*
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* Flag bits for buttons:
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*
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* REDRAW_PENDING: Non-zero means a DoWhenIdle handler
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* has already been queued to redraw
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* this window.
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* SELECTED: Non-zero means this button is selected,
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* so special highlight should be drawn.
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*/
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#define REDRAW_PENDING 1
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#define SELECTED 2
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/*
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* Mask values used to selectively enable entries in the
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* configuration specs:
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*/
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#define LABEL_MASK TK_CONFIG_USER_BIT
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#define BUTTON_MASK TK_CONFIG_USER_BIT << 1
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#define CHECK_BUTTON_MASK TK_CONFIG_USER_BIT << 2
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#define RADIO_BUTTON_MASK TK_CONFIG_USER_BIT << 3
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#define ALL_MASK (LABEL_MASK | BUTTON_MASK \
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| CHECK_BUTTON_MASK | RADIO_BUTTON_MASK)
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static int configFlags[] = {LABEL_MASK, BUTTON_MASK,
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CHECK_BUTTON_MASK, RADIO_BUTTON_MASK};
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/*
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* Information used for parsing configuration specs:
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*/
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static Tk_ConfigSpec configSpecs[] = {
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{TK_CONFIG_BORDER, "-activebackground", "activeBackground", "Foreground",
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DEF_BUTTON_ACTIVE_BG_COLOR, Tk_Offset(Button, activeBorder),
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BUTTON_MASK|CHECK_BUTTON_MASK|RADIO_BUTTON_MASK
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|TK_CONFIG_COLOR_ONLY},
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{TK_CONFIG_BORDER, "-activebackground", "activeBackground", "Foreground",
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DEF_BUTTON_ACTIVE_BG_MONO, Tk_Offset(Button, activeBorder),
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BUTTON_MASK|CHECK_BUTTON_MASK|RADIO_BUTTON_MASK
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|TK_CONFIG_MONO_ONLY},
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{TK_CONFIG_COLOR, "-activeforeground", "activeForeground", "Background",
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DEF_BUTTON_ACTIVE_FG_COLOR, Tk_Offset(Button, activeFg),
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BUTTON_MASK|CHECK_BUTTON_MASK|RADIO_BUTTON_MASK
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|TK_CONFIG_COLOR_ONLY},
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{TK_CONFIG_COLOR, "-activeforeground", "activeForeground", "Background",
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DEF_BUTTON_ACTIVE_FG_MONO, Tk_Offset(Button, activeFg),
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BUTTON_MASK|CHECK_BUTTON_MASK|RADIO_BUTTON_MASK
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|TK_CONFIG_MONO_ONLY},
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{TK_CONFIG_ANCHOR, "-anchor", "anchor", "Anchor",
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DEF_BUTTON_ANCHOR, Tk_Offset(Button, anchor), ALL_MASK},
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{TK_CONFIG_BORDER, "-background", "background", "Background",
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DEF_BUTTON_BG_COLOR, Tk_Offset(Button, normalBorder),
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ALL_MASK | TK_CONFIG_COLOR_ONLY},
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{TK_CONFIG_BORDER, "-background", "background", "Background",
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DEF_BUTTON_BG_MONO, Tk_Offset(Button, normalBorder),
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ALL_MASK | TK_CONFIG_MONO_ONLY},
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{TK_CONFIG_SYNONYM, "-bd", "borderWidth", (char *) NULL,
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(char *) NULL, 0, ALL_MASK},
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{TK_CONFIG_SYNONYM, "-bg", "background", (char *) NULL,
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(char *) NULL, 0, ALL_MASK},
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{TK_CONFIG_BITMAP, "-bitmap", "bitmap", "Bitmap",
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DEF_BUTTON_BITMAP, Tk_Offset(Button, bitmap),
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ALL_MASK|TK_CONFIG_NULL_OK},
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{TK_CONFIG_PIXELS, "-borderwidth", "borderWidth", "BorderWidth",
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DEF_BUTTON_BORDER_WIDTH, Tk_Offset(Button, borderWidth), ALL_MASK},
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{TK_CONFIG_STRING, "-command", "command", "Command",
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DEF_BUTTON_COMMAND, Tk_Offset(Button, command),
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BUTTON_MASK|CHECK_BUTTON_MASK|RADIO_BUTTON_MASK|TK_CONFIG_NULL_OK},
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{TK_CONFIG_ACTIVE_CURSOR, "-cursor", "cursor", "Cursor",
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DEF_BUTTON_CURSOR, Tk_Offset(Button, cursor),
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ALL_MASK|TK_CONFIG_NULL_OK},
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{TK_CONFIG_COLOR, "-disabledforeground", "disabledForeground",
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"DisabledForeground", DEF_BUTTON_DISABLED_FG_COLOR,
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Tk_Offset(Button, disabledFg), BUTTON_MASK|CHECK_BUTTON_MASK
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|RADIO_BUTTON_MASK|TK_CONFIG_COLOR_ONLY|TK_CONFIG_NULL_OK},
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{TK_CONFIG_COLOR, "-disabledforeground", "disabledForeground",
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"DisabledForeground", DEF_BUTTON_DISABLED_FG_MONO,
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Tk_Offset(Button, disabledFg), BUTTON_MASK|CHECK_BUTTON_MASK
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|RADIO_BUTTON_MASK|TK_CONFIG_MONO_ONLY|TK_CONFIG_NULL_OK},
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{TK_CONFIG_SYNONYM, "-fg", "foreground", (char *) NULL,
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(char *) NULL, 0, ALL_MASK},
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{TK_CONFIG_FONT, "-font", "font", "Font",
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DEF_BUTTON_FONT, Tk_Offset(Button, fontPtr),
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ALL_MASK},
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{TK_CONFIG_COLOR, "-foreground", "foreground", "Foreground",
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DEF_BUTTON_FG, Tk_Offset(Button, normalFg), ALL_MASK},
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{TK_CONFIG_INT, "-height", "height", "Height",
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DEF_BUTTON_HEIGHT, Tk_Offset(Button, height), ALL_MASK},
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{TK_CONFIG_STRING, "-offvalue", "offValue", "Value",
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DEF_BUTTON_OFF_VALUE, Tk_Offset(Button, offValue),
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CHECK_BUTTON_MASK},
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{TK_CONFIG_STRING, "-onvalue", "onValue", "Value",
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DEF_BUTTON_ON_VALUE, Tk_Offset(Button, onValue),
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CHECK_BUTTON_MASK},
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{TK_CONFIG_PIXELS, "-padx", "padX", "Pad",
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DEF_BUTTON_PADX, Tk_Offset(Button, padX), ALL_MASK},
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{TK_CONFIG_PIXELS, "-pady", "padY", "Pad",
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DEF_BUTTON_PADY, Tk_Offset(Button, padY), ALL_MASK},
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{TK_CONFIG_RELIEF, "-relief", "relief", "Relief",
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DEF_BUTTON_RELIEF, Tk_Offset(Button, relief),
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BUTTON_MASK|CHECK_BUTTON_MASK|RADIO_BUTTON_MASK},
|
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{TK_CONFIG_RELIEF, "-relief", "relief", "Relief",
|
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DEF_LABEL_RELIEF, Tk_Offset(Button, relief), LABEL_MASK},
|
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{TK_CONFIG_COLOR, "-selector", "selector", "Foreground",
|
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DEF_BUTTON_SELECTOR_COLOR, Tk_Offset(Button, selectorFg),
|
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CHECK_BUTTON_MASK|RADIO_BUTTON_MASK|TK_CONFIG_COLOR_ONLY
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||
|TK_CONFIG_NULL_OK},
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{TK_CONFIG_COLOR, "-selector", "selector", "Foreground",
|
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DEF_BUTTON_SELECTOR_MONO, Tk_Offset(Button, selectorFg),
|
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CHECK_BUTTON_MASK|RADIO_BUTTON_MASK|TK_CONFIG_MONO_ONLY
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|TK_CONFIG_NULL_OK},
|
||
{TK_CONFIG_UID, "-state", "state", "State",
|
||
DEF_BUTTON_STATE, Tk_Offset(Button, state),
|
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BUTTON_MASK|CHECK_BUTTON_MASK|RADIO_BUTTON_MASK},
|
||
{TK_CONFIG_STRING, "-text", "text", "Text",
|
||
DEF_BUTTON_TEXT, Tk_Offset(Button, text), ALL_MASK},
|
||
{TK_CONFIG_STRING, "-textvariable", "textVariable", "Variable",
|
||
DEF_BUTTON_TEXT_VARIABLE, Tk_Offset(Button, textVarName),
|
||
ALL_MASK|TK_CONFIG_NULL_OK},
|
||
{TK_CONFIG_STRING, "-value", "value", "Value",
|
||
DEF_BUTTON_VALUE, Tk_Offset(Button, onValue),
|
||
RADIO_BUTTON_MASK|TK_CONFIG_NULL_OK},
|
||
{TK_CONFIG_STRING, "-variable", "variable", "Variable",
|
||
DEF_RADIOBUTTON_VARIABLE, Tk_Offset(Button, selVarName),
|
||
RADIO_BUTTON_MASK},
|
||
{TK_CONFIG_STRING, "-variable", "variable", "Variable",
|
||
DEF_CHECKBUTTON_VARIABLE, Tk_Offset(Button, selVarName),
|
||
CHECK_BUTTON_MASK|TK_CONFIG_NULL_OK},
|
||
{TK_CONFIG_INT, "-width", "width", "Width",
|
||
DEF_BUTTON_WIDTH, Tk_Offset(Button, width), ALL_MASK},
|
||
{TK_CONFIG_END, (char *) NULL, (char *) NULL, (char *) NULL,
|
||
(char *) NULL, 0, 0}
|
||
};
|
||
|
||
/*
|
||
* String to print out in error messages, identifying options for
|
||
* widget commands for different types of labels or buttons:
|
||
*/
|
||
|
||
static char *optionStrings[] = {
|
||
"configure",
|
||
"activate, configure, deactivate, flash, or invoke",
|
||
"activate, configure, deactivate, deselect, flash, invoke, select, or toggle",
|
||
"activate, configure, deactivate, deselect, flash, invoke, or select"
|
||
};
|
||
|
||
/*
|
||
* Forward declarations for procedures defined later in this file:
|
||
*/
|
||
|
||
static void ButtonEventProc _ANSI_ARGS_((ClientData clientData,
|
||
XEvent *eventPtr));
|
||
static char * ButtonTextVarProc _ANSI_ARGS_((ClientData clientData,
|
||
Tcl_Interp *interp, char *name1, char *name2,
|
||
int flags));
|
||
static char * ButtonVarProc _ANSI_ARGS_((ClientData clientData,
|
||
Tcl_Interp *interp, char *name1, char *name2,
|
||
int flags));
|
||
static int ButtonWidgetCmd _ANSI_ARGS_((ClientData clientData,
|
||
Tcl_Interp *interp, int argc, char **argv));
|
||
static void ComputeButtonGeometry _ANSI_ARGS_((Button *butPtr));
|
||
static int ConfigureButton _ANSI_ARGS_((Tcl_Interp *interp,
|
||
Button *butPtr, int argc, char **argv,
|
||
int flags));
|
||
static void DestroyButton _ANSI_ARGS_((ClientData clientData));
|
||
static void DisplayButton _ANSI_ARGS_((ClientData clientData));
|
||
static int InvokeButton _ANSI_ARGS_((Button *butPtr));
|
||
|
||
/*
|
||
*--------------------------------------------------------------
|
||
*
|
||
* Tk_ButtonCmd --
|
||
*
|
||
* This procedure is invoked to process the "button", "label",
|
||
* "radiobutton", and "checkbutton" Tcl commands. See the
|
||
* user documentation for details on what it does.
|
||
*
|
||
* Results:
|
||
* A standard Tcl result.
|
||
*
|
||
* Side effects:
|
||
* See the user documentation.
|
||
*
|
||
*--------------------------------------------------------------
|
||
*/
|
||
|
||
int
|
||
Tk_ButtonCmd(clientData, interp, argc, argv)
|
||
ClientData clientData; /* Main window associated with
|
||
* interpreter. */
|
||
Tcl_Interp *interp; /* Current interpreter. */
|
||
int argc; /* Number of arguments. */
|
||
char **argv; /* Argument strings. */
|
||
{
|
||
register Button *butPtr;
|
||
int type;
|
||
Tk_Window tkwin = (Tk_Window) clientData;
|
||
Tk_Window new;
|
||
|
||
if (argc < 2) {
|
||
Tcl_AppendResult(interp, "wrong # args: should be \"",
|
||
argv[0], " pathName ?options?\"", (char *) NULL);
|
||
return TCL_ERROR;
|
||
}
|
||
|
||
switch (argv[0][0]) {
|
||
case 'l':
|
||
type = TYPE_LABEL;
|
||
break;
|
||
case 'b':
|
||
type = TYPE_BUTTON;
|
||
break;
|
||
case 'c':
|
||
type = TYPE_CHECK_BUTTON;
|
||
break;
|
||
case 'r':
|
||
type = TYPE_RADIO_BUTTON;
|
||
break;
|
||
default:
|
||
sprintf(interp->result,
|
||
"unknown button-creation command \"%.50s\"", argv[0]);
|
||
return TCL_ERROR;
|
||
}
|
||
|
||
/*
|
||
* Create the new window.
|
||
*/
|
||
|
||
new = Tk_CreateWindowFromPath(interp, tkwin, argv[1], (char *) NULL);
|
||
if (new == NULL) {
|
||
return TCL_ERROR;
|
||
}
|
||
|
||
/*
|
||
* Initialize the data structure for the button.
|
||
*/
|
||
|
||
butPtr = (Button *) ckalloc(sizeof(Button));
|
||
butPtr->tkwin = new;
|
||
butPtr->display = Tk_Display(new);
|
||
butPtr->interp = interp;
|
||
butPtr->type = type;
|
||
butPtr->text = NULL;
|
||
butPtr->textLength = 0;
|
||
butPtr->textVarName = NULL;
|
||
butPtr->bitmap = None;
|
||
butPtr->state = tkNormalUid;
|
||
butPtr->normalBorder = NULL;
|
||
butPtr->activeBorder = NULL;
|
||
butPtr->borderWidth = 0;
|
||
butPtr->relief = TK_RELIEF_FLAT;
|
||
butPtr->fontPtr = NULL;
|
||
butPtr->normalFg = NULL;
|
||
butPtr->activeFg = NULL;
|
||
butPtr->disabledFg = NULL;
|
||
butPtr->normalTextGC = None;
|
||
butPtr->activeTextGC = None;
|
||
butPtr->gray = None;
|
||
butPtr->disabledGC = None;
|
||
butPtr->leftBearing = 0;
|
||
butPtr->rightBearing = 0;
|
||
butPtr->width = 0;
|
||
butPtr->height = 0;
|
||
butPtr->padX = 0;
|
||
butPtr->padY = 0;
|
||
butPtr->anchor = TK_ANCHOR_CENTER;
|
||
butPtr->selectorFg = NULL;
|
||
butPtr->selectorGC = None;
|
||
butPtr->selectorSpace = 0;
|
||
butPtr->selectorDiameter = 0;
|
||
butPtr->selVarName = NULL;
|
||
butPtr->onValue = NULL;
|
||
butPtr->offValue = NULL;
|
||
butPtr->cursor = None;
|
||
butPtr->command = NULL;
|
||
butPtr->flags = 0;
|
||
|
||
Tk_SetClass(new, classNames[type]);
|
||
Tk_CreateEventHandler(butPtr->tkwin, ExposureMask|StructureNotifyMask,
|
||
ButtonEventProc, (ClientData) butPtr);
|
||
Tcl_CreateCommand(interp, Tk_PathName(butPtr->tkwin), ButtonWidgetCmd,
|
||
(ClientData) butPtr, (void (*)()) NULL);
|
||
if (ConfigureButton(interp, butPtr, argc-2, argv+2,
|
||
configFlags[type]) != TCL_OK) {
|
||
Tk_DestroyWindow(butPtr->tkwin);
|
||
return TCL_ERROR;
|
||
}
|
||
|
||
interp->result = Tk_PathName(butPtr->tkwin);
|
||
return TCL_OK;
|
||
}
|
||
|
||
/*
|
||
*--------------------------------------------------------------
|
||
*
|
||
* ButtonWidgetCmd --
|
||
*
|
||
* This procedure is invoked to process the Tcl command
|
||
* that corresponds to a widget managed by this module.
|
||
* See the user documentation for details on what it does.
|
||
*
|
||
* Results:
|
||
* A standard Tcl result.
|
||
*
|
||
* Side effects:
|
||
* See the user documentation.
|
||
*
|
||
*--------------------------------------------------------------
|
||
*/
|
||
|
||
static int
|
||
ButtonWidgetCmd(clientData, interp, argc, argv)
|
||
ClientData clientData; /* Information about button widget. */
|
||
Tcl_Interp *interp; /* Current interpreter. */
|
||
int argc; /* Number of arguments. */
|
||
char **argv; /* Argument strings. */
|
||
{
|
||
register Button *butPtr = (Button *) clientData;
|
||
int result = TCL_OK;
|
||
int length;
|
||
char c;
|
||
|
||
if (argc < 2) {
|
||
sprintf(interp->result,
|
||
"wrong # args: should be \"%.50s option [arg arg ...]\"",
|
||
argv[0]);
|
||
return TCL_ERROR;
|
||
}
|
||
Tk_Preserve((ClientData) butPtr);
|
||
c = argv[1][0];
|
||
length = strlen(argv[1]);
|
||
if ((c == 'a') && (strncmp(argv[1], "activate", length) == 0)
|
||
&& (butPtr->type != TYPE_LABEL)) {
|
||
if (argc > 2) {
|
||
sprintf(interp->result,
|
||
"wrong # args: should be \"%.50s activate\"",
|
||
argv[0]);
|
||
goto error;
|
||
}
|
||
if (butPtr->state != tkDisabledUid) {
|
||
butPtr->state = tkActiveUid;
|
||
Tk_SetBackgroundFromBorder(butPtr->tkwin, butPtr->activeBorder);
|
||
goto redisplay;
|
||
}
|
||
} else if ((c == 'c') && (strncmp(argv[1], "configure", length) == 0)) {
|
||
if (argc == 2) {
|
||
result = Tk_ConfigureInfo(interp, butPtr->tkwin, configSpecs,
|
||
(char *) butPtr, (char *) NULL, configFlags[butPtr->type]);
|
||
} else if (argc == 3) {
|
||
result = Tk_ConfigureInfo(interp, butPtr->tkwin, configSpecs,
|
||
(char *) butPtr, argv[2],
|
||
configFlags[butPtr->type]);
|
||
} else {
|
||
result = ConfigureButton(interp, butPtr, argc-2, argv+2,
|
||
configFlags[butPtr->type] | TK_CONFIG_ARGV_ONLY);
|
||
}
|
||
} else if ((c == 'd') && (strncmp(argv[1], "deactivate", length) == 0)
|
||
&& (length > 2) && (butPtr->type != TYPE_LABEL)) {
|
||
if (argc > 2) {
|
||
sprintf(interp->result,
|
||
"wrong # args: should be \"%.50s deactivate\"",
|
||
argv[0]);
|
||
goto error;
|
||
}
|
||
if (butPtr->state != tkDisabledUid) {
|
||
butPtr->state = tkNormalUid;
|
||
Tk_SetBackgroundFromBorder(butPtr->tkwin, butPtr->normalBorder);
|
||
goto redisplay;
|
||
}
|
||
} else if ((c == 'd') && (strncmp(argv[1], "deselect", length) == 0)
|
||
&& (length > 2) && (butPtr->type >= TYPE_CHECK_BUTTON)) {
|
||
if (argc > 2) {
|
||
sprintf(interp->result,
|
||
"wrong # args: should be \"%.50s deselect\"",
|
||
argv[0]);
|
||
goto error;
|
||
}
|
||
if (butPtr->type == TYPE_CHECK_BUTTON) {
|
||
Tcl_SetVar(interp, butPtr->selVarName, butPtr->offValue,
|
||
TCL_GLOBAL_ONLY);
|
||
} else if (butPtr->flags & SELECTED) {
|
||
Tcl_SetVar(interp, butPtr->selVarName, "", TCL_GLOBAL_ONLY);
|
||
}
|
||
} else if ((c == 'f') && (strncmp(argv[1], "flash", length) == 0)
|
||
&& (butPtr->type != TYPE_LABEL)) {
|
||
int i;
|
||
|
||
if (argc > 2) {
|
||
sprintf(interp->result,
|
||
"wrong # args: should be \"%.50s flash\"",
|
||
argv[0]);
|
||
goto error;
|
||
}
|
||
if (butPtr->state != tkDisabledUid) {
|
||
for (i = 0; i < 4; i++) {
|
||
butPtr->state = (butPtr->state == tkNormalUid)
|
||
? tkActiveUid : tkNormalUid;
|
||
Tk_SetBackgroundFromBorder(butPtr->tkwin,
|
||
(butPtr->state == tkActiveUid) ? butPtr->activeBorder
|
||
: butPtr->normalBorder);
|
||
DisplayButton((ClientData) butPtr);
|
||
XFlush(butPtr->display);
|
||
Tk_Sleep(50);
|
||
}
|
||
}
|
||
} else if ((c == 'i') && (strncmp(argv[1], "invoke", length) == 0)
|
||
&& (butPtr->type > TYPE_LABEL)) {
|
||
if (argc > 2) {
|
||
sprintf(interp->result,
|
||
"wrong # args: should be \"%.50s invoke\"",
|
||
argv[0]);
|
||
goto error;
|
||
}
|
||
if (butPtr->state != tkDisabledUid) {
|
||
result = InvokeButton(butPtr);
|
||
}
|
||
} else if ((c == 's') && (strncmp(argv[1], "select", length) == 0)
|
||
&& (butPtr->type >= TYPE_CHECK_BUTTON)) {
|
||
if (argc > 2) {
|
||
sprintf(interp->result,
|
||
"wrong # args: should be \"%.50s select\"",
|
||
argv[0]);
|
||
goto error;
|
||
}
|
||
Tcl_SetVar(interp, butPtr->selVarName, butPtr->onValue, TCL_GLOBAL_ONLY);
|
||
} else if ((c == 't') && (strncmp(argv[1], "toggle", length) == 0)
|
||
&& (length >= 2) && (butPtr->type == TYPE_CHECK_BUTTON)) {
|
||
if (argc > 2) {
|
||
sprintf(interp->result,
|
||
"wrong # args: should be \"%.50s select\"",
|
||
argv[0]);
|
||
goto error;
|
||
}
|
||
if (butPtr->flags & SELECTED) {
|
||
Tcl_SetVar(interp, butPtr->selVarName, butPtr->offValue, TCL_GLOBAL_ONLY);
|
||
} else {
|
||
Tcl_SetVar(interp, butPtr->selVarName, butPtr->onValue, TCL_GLOBAL_ONLY);
|
||
}
|
||
} else {
|
||
sprintf(interp->result,
|
||
"bad option \"%.50s\": must be %s", argv[1],
|
||
optionStrings[butPtr->type]);
|
||
goto error;
|
||
}
|
||
Tk_Release((ClientData) butPtr);
|
||
return result;
|
||
|
||
redisplay:
|
||
if (Tk_IsMapped(butPtr->tkwin) && !(butPtr->flags & REDRAW_PENDING)) {
|
||
Tk_DoWhenIdle(DisplayButton, (ClientData) butPtr);
|
||
butPtr->flags |= REDRAW_PENDING;
|
||
}
|
||
Tk_Release((ClientData) butPtr);
|
||
return TCL_OK;
|
||
|
||
error:
|
||
Tk_Release((ClientData) butPtr);
|
||
return TCL_ERROR;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* DestroyButton --
|
||
*
|
||
* This procedure is invoked by Tk_EventuallyFree or Tk_Release
|
||
* to clean up the internal structure of a button at a safe time
|
||
* (when no-one is using it anymore).
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* Everything associated with the widget is freed up.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static void
|
||
DestroyButton(clientData)
|
||
ClientData clientData; /* Info about entry widget. */
|
||
{
|
||
register Button *butPtr = (Button *) clientData;
|
||
|
||
/*
|
||
* Free up all the stuff that requires special handling, then
|
||
* let Tk_FreeOptions handle all the standard option-related
|
||
* stuff.
|
||
*/
|
||
|
||
if (butPtr->textVarName != NULL) {
|
||
Tcl_UntraceVar(butPtr->interp, butPtr->textVarName,
|
||
TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
|
||
ButtonTextVarProc, (ClientData) butPtr);
|
||
}
|
||
if (butPtr->normalTextGC != None) {
|
||
Tk_FreeGC(butPtr->display, butPtr->normalTextGC);
|
||
}
|
||
if (butPtr->activeTextGC != None) {
|
||
Tk_FreeGC(butPtr->display, butPtr->activeTextGC);
|
||
}
|
||
if (butPtr->gray != None) {
|
||
Tk_FreeBitmap(butPtr->display, butPtr->gray);
|
||
}
|
||
if (butPtr->disabledGC != None) {
|
||
Tk_FreeGC(butPtr->display, butPtr->disabledGC);
|
||
}
|
||
if (butPtr->selectorGC != None) {
|
||
Tk_FreeGC(butPtr->display, butPtr->selectorGC);
|
||
}
|
||
if (butPtr->selVarName != NULL) {
|
||
Tcl_UntraceVar(butPtr->interp, butPtr->selVarName,
|
||
TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
|
||
ButtonVarProc, (ClientData) butPtr);
|
||
}
|
||
Tk_FreeOptions(configSpecs, (char *) butPtr, butPtr->display,
|
||
configFlags[butPtr->type]);
|
||
ckfree((char *) butPtr);
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* ConfigureButton --
|
||
*
|
||
* This procedure is called to process an argv/argc list, plus
|
||
* the Tk option database, in order to configure (or
|
||
* reconfigure) a button widget.
|
||
*
|
||
* Results:
|
||
* The return value is a standard Tcl result. If TCL_ERROR is
|
||
* returned, then interp->result contains an error message.
|
||
*
|
||
* Side effects:
|
||
* Configuration information, such as text string, colors, font,
|
||
* etc. get set for butPtr; old resources get freed, if there
|
||
* were any. The button is redisplayed.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static int
|
||
ConfigureButton(interp, butPtr, argc, argv, flags)
|
||
Tcl_Interp *interp; /* Used for error reporting. */
|
||
register Button *butPtr; /* Information about widget; may or may
|
||
* not already have values for some fields. */
|
||
int argc; /* Number of valid entries in argv. */
|
||
char **argv; /* Arguments. */
|
||
int flags; /* Flags to pass to Tk_ConfigureWidget. */
|
||
{
|
||
XGCValues gcValues;
|
||
GC newGC;
|
||
unsigned long mask;
|
||
|
||
/*
|
||
* Eliminate any existing trace on variables monitored by the button.
|
||
*/
|
||
|
||
if (butPtr->textVarName != NULL) {
|
||
Tcl_UntraceVar(interp, butPtr->textVarName,
|
||
TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
|
||
ButtonTextVarProc, (ClientData) butPtr);
|
||
}
|
||
if (butPtr->selVarName != NULL) {
|
||
Tcl_UntraceVar(interp, butPtr->selVarName,
|
||
TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
|
||
ButtonVarProc, (ClientData) butPtr);
|
||
}
|
||
|
||
if (Tk_ConfigureWidget(interp, butPtr->tkwin, configSpecs,
|
||
argc, argv, (char *) butPtr, flags) != TCL_OK) {
|
||
return TCL_ERROR;
|
||
}
|
||
|
||
/*
|
||
* A few options need special processing, such as setting the
|
||
* background from a 3-D border, or filling in complicated
|
||
* defaults that couldn't be specified to Tk_ConfigureWidget.
|
||
*/
|
||
|
||
if (butPtr->state == tkActiveUid) {
|
||
Tk_SetBackgroundFromBorder(butPtr->tkwin, butPtr->activeBorder);
|
||
} else {
|
||
Tk_SetBackgroundFromBorder(butPtr->tkwin, butPtr->normalBorder);
|
||
if ((butPtr->state != tkNormalUid)
|
||
&& (butPtr->state != tkDisabledUid)) {
|
||
Tcl_AppendResult(interp, "bad state value \"", butPtr->state,
|
||
"\": must be normal, active, or disabled", (char *) NULL);
|
||
butPtr->state = tkNormalUid;
|
||
return TCL_ERROR;
|
||
}
|
||
}
|
||
|
||
gcValues.font = butPtr->fontPtr->fid;
|
||
gcValues.foreground = butPtr->normalFg->pixel;
|
||
gcValues.background = Tk_3DBorderColor(butPtr->normalBorder)->pixel;
|
||
|
||
/*
|
||
* Note: GraphicsExpose events are disabled in normalTextGC because it's
|
||
* used to copy stuff from an off-screen pixmap onto the screen (we know
|
||
* that there's no problem with obscured areas).
|
||
*/
|
||
|
||
gcValues.graphics_exposures = False;
|
||
newGC = Tk_GetGC(butPtr->tkwin,
|
||
GCForeground|GCBackground|GCFont|GCGraphicsExposures, &gcValues);
|
||
if (butPtr->normalTextGC != None) {
|
||
Tk_FreeGC(butPtr->display, butPtr->normalTextGC);
|
||
}
|
||
butPtr->normalTextGC = newGC;
|
||
|
||
if (butPtr->activeFg != NULL) {
|
||
gcValues.font = butPtr->fontPtr->fid;
|
||
gcValues.foreground = butPtr->activeFg->pixel;
|
||
gcValues.background = Tk_3DBorderColor(butPtr->activeBorder)->pixel;
|
||
newGC = Tk_GetGC(butPtr->tkwin, GCForeground|GCBackground|GCFont,
|
||
&gcValues);
|
||
if (butPtr->activeTextGC != None) {
|
||
Tk_FreeGC(butPtr->display, butPtr->activeTextGC);
|
||
}
|
||
butPtr->activeTextGC = newGC;
|
||
}
|
||
|
||
gcValues.font = butPtr->fontPtr->fid;
|
||
gcValues.background = Tk_3DBorderColor(butPtr->normalBorder)->pixel;
|
||
if (butPtr->disabledFg != NULL) {
|
||
gcValues.foreground = butPtr->disabledFg->pixel;
|
||
mask = GCForeground|GCBackground|GCFont;
|
||
} else {
|
||
gcValues.foreground = gcValues.background;
|
||
if (butPtr->gray == None) {
|
||
butPtr->gray = Tk_GetBitmap(interp, butPtr->tkwin,
|
||
Tk_GetUid("gray50"));
|
||
if (butPtr->gray == None) {
|
||
return TCL_ERROR;
|
||
}
|
||
}
|
||
gcValues.fill_style = FillStippled;
|
||
gcValues.stipple = butPtr->gray;
|
||
mask = GCForeground|GCFillStyle|GCStipple;
|
||
}
|
||
newGC = Tk_GetGC(butPtr->tkwin, mask, &gcValues);
|
||
if (butPtr->disabledGC != None) {
|
||
Tk_FreeGC(butPtr->display, butPtr->disabledGC);
|
||
}
|
||
butPtr->disabledGC = newGC;
|
||
|
||
if (butPtr->padX < 0) {
|
||
butPtr->padX = 0;
|
||
}
|
||
if (butPtr->padY < 0) {
|
||
butPtr->padY = 0;
|
||
}
|
||
|
||
if (butPtr->type >= TYPE_CHECK_BUTTON) {
|
||
char *value;
|
||
|
||
if (butPtr->selectorFg != NULL) {
|
||
gcValues.foreground = butPtr->selectorFg->pixel;
|
||
newGC = Tk_GetGC(butPtr->tkwin, GCForeground, &gcValues);
|
||
} else {
|
||
newGC = None;
|
||
}
|
||
if (butPtr->selectorGC != None) {
|
||
Tk_FreeGC(butPtr->display, butPtr->selectorGC);
|
||
}
|
||
butPtr->selectorGC = newGC;
|
||
|
||
if (butPtr->selVarName == NULL) {
|
||
butPtr->selVarName = (char *) ckalloc((unsigned)
|
||
(strlen(Tk_Name(butPtr->tkwin)) + 1));
|
||
strcpy(butPtr->selVarName, Tk_Name(butPtr->tkwin));
|
||
}
|
||
if (butPtr->onValue == NULL) {
|
||
butPtr->onValue = (char *) ckalloc((unsigned)
|
||
(strlen(Tk_Name(butPtr->tkwin)) + 1));
|
||
strcpy(butPtr->onValue, Tk_Name(butPtr->tkwin));
|
||
}
|
||
|
||
/*
|
||
* Select the button if the associated variable has the
|
||
* appropriate value, initialize the variable if it doesn't
|
||
* exist, then set a trace on the variable to monitor future
|
||
* changes to its value.
|
||
*/
|
||
|
||
value = Tcl_GetVar(interp, butPtr->selVarName, TCL_GLOBAL_ONLY);
|
||
butPtr->flags &= ~SELECTED;
|
||
if (value != NULL) {
|
||
if (strcmp(value, butPtr->onValue) == 0) {
|
||
butPtr->flags |= SELECTED;
|
||
}
|
||
} else {
|
||
Tcl_SetVar(interp, butPtr->selVarName,
|
||
(butPtr->type == TYPE_CHECK_BUTTON) ? butPtr->offValue : "",
|
||
TCL_GLOBAL_ONLY);
|
||
}
|
||
Tcl_TraceVar(interp, butPtr->selVarName,
|
||
TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
|
||
ButtonVarProc, (ClientData) butPtr);
|
||
}
|
||
|
||
/*
|
||
* If the button is to display the value of a variable, then set up
|
||
* a trace on the variable's value, create the variable if it doesn't
|
||
* exist, and fetch its current value.
|
||
*/
|
||
|
||
if ((butPtr->bitmap == None) && (butPtr->textVarName != NULL)) {
|
||
char *value;
|
||
|
||
value = Tcl_GetVar(interp, butPtr->textVarName, TCL_GLOBAL_ONLY);
|
||
if (value == NULL) {
|
||
Tcl_SetVar(interp, butPtr->textVarName, butPtr->text,
|
||
TCL_GLOBAL_ONLY);
|
||
} else {
|
||
if (butPtr->text != NULL) {
|
||
ckfree(butPtr->text);
|
||
}
|
||
butPtr->text = ckalloc((unsigned) (strlen(value) + 1));
|
||
strcpy(butPtr->text, value);
|
||
}
|
||
Tcl_TraceVar(interp, butPtr->textVarName,
|
||
TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
|
||
ButtonTextVarProc, (ClientData) butPtr);
|
||
}
|
||
|
||
ComputeButtonGeometry(butPtr);
|
||
|
||
/*
|
||
* Lastly, arrange for the button to be redisplayed.
|
||
*/
|
||
|
||
if (Tk_IsMapped(butPtr->tkwin) && !(butPtr->flags & REDRAW_PENDING)) {
|
||
Tk_DoWhenIdle(DisplayButton, (ClientData) butPtr);
|
||
butPtr->flags |= REDRAW_PENDING;
|
||
}
|
||
|
||
return TCL_OK;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* DisplayButton --
|
||
*
|
||
* This procedure is invoked to display a button widget.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* Commands are output to X to display the button in its
|
||
* current mode.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static void
|
||
DisplayButton(clientData)
|
||
ClientData clientData; /* Information about widget. */
|
||
{
|
||
register Button *butPtr = (Button *) clientData;
|
||
GC gc;
|
||
Tk_3DBorder border;
|
||
Pixmap pixmap;
|
||
int x = 0; /* Initialization only needed to stop
|
||
* compiler warning. */
|
||
int y;
|
||
register Tk_Window tkwin = butPtr->tkwin;
|
||
|
||
butPtr->flags &= ~REDRAW_PENDING;
|
||
if ((butPtr->tkwin == NULL) || !Tk_IsMapped(tkwin)) {
|
||
return;
|
||
}
|
||
|
||
if ((butPtr->state == tkDisabledUid) && (butPtr->disabledFg != NULL)) {
|
||
gc = butPtr->disabledGC;
|
||
border = butPtr->normalBorder;
|
||
} else if (butPtr->state == tkActiveUid) {
|
||
gc = butPtr->activeTextGC;
|
||
border = butPtr->activeBorder;
|
||
} else {
|
||
gc = butPtr->normalTextGC;
|
||
border = butPtr->normalBorder;
|
||
}
|
||
|
||
/*
|
||
* In order to avoid screen flashes, this procedure redraws
|
||
* the button in a pixmap, then copies the pixmap to the
|
||
* screen in a single operation. This means that there's no
|
||
* point in time where the on-sreen image has been cleared.
|
||
*/
|
||
|
||
pixmap = XCreatePixmap(butPtr->display, Tk_WindowId(tkwin),
|
||
Tk_Width(tkwin), Tk_Height(tkwin), Tk_Depth(tkwin));
|
||
Tk_Fill3DRectangle(butPtr->display, pixmap, border,
|
||
0, 0, Tk_Width(tkwin), Tk_Height(tkwin), 0, TK_RELIEF_FLAT);
|
||
|
||
/*
|
||
* Display bitmap or text for button.
|
||
*/
|
||
|
||
if (butPtr->bitmap != None) {
|
||
unsigned int width, height;
|
||
|
||
Tk_SizeOfBitmap(butPtr->display, butPtr->bitmap, &width, &height);
|
||
switch (butPtr->anchor) {
|
||
case TK_ANCHOR_NW: case TK_ANCHOR_W: case TK_ANCHOR_SW:
|
||
x = butPtr->borderWidth + butPtr->selectorSpace
|
||
+ butPtr->padX + 1;
|
||
break;
|
||
case TK_ANCHOR_N: case TK_ANCHOR_CENTER: case TK_ANCHOR_S:
|
||
x = (Tk_Width(tkwin) + butPtr->selectorSpace - width)/2;
|
||
break;
|
||
default:
|
||
x = Tk_Width(tkwin) - butPtr->borderWidth - butPtr->padX
|
||
- width - 1;
|
||
break;
|
||
}
|
||
switch (butPtr->anchor) {
|
||
case TK_ANCHOR_NW: case TK_ANCHOR_N: case TK_ANCHOR_NE:
|
||
y = butPtr->borderWidth + butPtr->padY + 1;
|
||
break;
|
||
case TK_ANCHOR_W: case TK_ANCHOR_CENTER: case TK_ANCHOR_E:
|
||
y = (Tk_Height(tkwin) - height)/2;
|
||
break;
|
||
default:
|
||
y = Tk_Height(tkwin) - butPtr->borderWidth - butPtr->padY
|
||
- height - 1;
|
||
break;
|
||
}
|
||
if (butPtr->relief == TK_RELIEF_RAISED) {
|
||
x -= 1;
|
||
y -= 1;
|
||
} else if (butPtr->relief == TK_RELIEF_SUNKEN) {
|
||
x += 1;
|
||
y += 1;
|
||
}
|
||
XCopyPlane(butPtr->display, butPtr->bitmap, pixmap,
|
||
gc, 0, 0, width, height, x, y, 1);
|
||
y += height/2;
|
||
} else {
|
||
switch (butPtr->anchor) {
|
||
case TK_ANCHOR_NW: case TK_ANCHOR_W: case TK_ANCHOR_SW:
|
||
x = butPtr->borderWidth + butPtr->padX + butPtr->selectorSpace
|
||
- butPtr->leftBearing + 1;
|
||
break;
|
||
case TK_ANCHOR_N: case TK_ANCHOR_CENTER: case TK_ANCHOR_S:
|
||
x = (Tk_Width(tkwin) + butPtr->selectorSpace
|
||
- butPtr->leftBearing - butPtr->rightBearing)/2;
|
||
break;
|
||
default:
|
||
x = Tk_Width(tkwin) - butPtr->borderWidth - butPtr->padX
|
||
- butPtr->rightBearing - 1;
|
||
break;
|
||
}
|
||
switch (butPtr->anchor) {
|
||
case TK_ANCHOR_NW: case TK_ANCHOR_N: case TK_ANCHOR_NE:
|
||
y = butPtr->borderWidth + butPtr->fontPtr->ascent
|
||
+ butPtr->padY + 1;
|
||
break;
|
||
case TK_ANCHOR_W: case TK_ANCHOR_CENTER: case TK_ANCHOR_E:
|
||
y = (Tk_Height(tkwin) + butPtr->fontPtr->ascent
|
||
- butPtr->fontPtr->descent)/2;
|
||
break;
|
||
default:
|
||
y = Tk_Height(tkwin) - butPtr->borderWidth - butPtr->padY
|
||
- butPtr->fontPtr->descent - 1;
|
||
break;
|
||
}
|
||
if (butPtr->relief == TK_RELIEF_RAISED) {
|
||
x -= 1;
|
||
y -= 1;
|
||
} else if (butPtr->relief == TK_RELIEF_SUNKEN) {
|
||
x += 1;
|
||
y += 1;
|
||
}
|
||
XDrawString(butPtr->display, pixmap, gc, x, y,
|
||
butPtr->text, butPtr->textLength);
|
||
y -= (butPtr->fontPtr->ascent - butPtr->fontPtr->descent)/2;
|
||
x += butPtr->leftBearing;
|
||
}
|
||
|
||
/*
|
||
* Draw the selector for check buttons and radio buttons. At this
|
||
* point x and y refer to the top-left corner of the text or bitmap.
|
||
*/
|
||
|
||
if ((butPtr->type == TYPE_CHECK_BUTTON) && (butPtr->selectorGC != None)) {
|
||
int dim;
|
||
|
||
dim = butPtr->selectorDiameter;
|
||
x -= butPtr->selectorSpace;
|
||
y -= dim/2;
|
||
Tk_Draw3DRectangle(butPtr->display, pixmap, border, x, y,
|
||
dim, dim, butPtr->borderWidth, TK_RELIEF_SUNKEN);
|
||
x += butPtr->borderWidth;
|
||
y += butPtr->borderWidth;
|
||
dim -= 2*butPtr->borderWidth;
|
||
if (dim > 0) {
|
||
if (butPtr->flags & SELECTED) {
|
||
XFillRectangle(butPtr->display, pixmap, butPtr->selectorGC,
|
||
x, y, (unsigned int) dim, (unsigned int) dim);
|
||
} else {
|
||
Tk_Fill3DRectangle(butPtr->display, pixmap,
|
||
butPtr->normalBorder, x, y, dim, dim,
|
||
butPtr->borderWidth, TK_RELIEF_FLAT);
|
||
}
|
||
}
|
||
} else if ((butPtr->type == TYPE_RADIO_BUTTON)
|
||
&& (butPtr->selectorGC != None)) {
|
||
XPoint points[4];
|
||
int radius;
|
||
|
||
radius = butPtr->selectorDiameter/2;
|
||
points[0].x = x - butPtr->selectorSpace;
|
||
points[0].y = y;
|
||
points[1].x = points[0].x + radius;
|
||
points[1].y = points[0].y + radius;
|
||
points[2].x = points[1].x + radius;
|
||
points[2].y = points[0].y;
|
||
points[3].x = points[1].x;
|
||
points[3].y = points[0].y - radius;
|
||
if (butPtr->flags & SELECTED) {
|
||
XFillPolygon(butPtr->display, pixmap, butPtr->selectorGC,
|
||
points, 4, Convex, CoordModeOrigin);
|
||
} else {
|
||
Tk_Fill3DPolygon(butPtr->display, pixmap, butPtr->normalBorder,
|
||
points, 4, butPtr->borderWidth, TK_RELIEF_FLAT);
|
||
}
|
||
Tk_Draw3DPolygon(butPtr->display, pixmap, border,
|
||
points, 4, butPtr->borderWidth, TK_RELIEF_RAISED);
|
||
}
|
||
|
||
/*
|
||
* If the button is disabled with a stipple rather than a special
|
||
* foreground color, generate the stippled effect.
|
||
*/
|
||
|
||
if ((butPtr->state == tkDisabledUid) && (butPtr->disabledFg == NULL)) {
|
||
XFillRectangle(butPtr->display, pixmap, butPtr->disabledGC,
|
||
butPtr->borderWidth, butPtr->borderWidth,
|
||
(unsigned) (Tk_Width(tkwin) - 2*butPtr->borderWidth),
|
||
(unsigned) (Tk_Height(tkwin) - 2*butPtr->borderWidth));
|
||
}
|
||
|
||
/*
|
||
* Draw the border last. This way, if the button's contents
|
||
* overflow onto the border they'll be covered up by the border.
|
||
*/
|
||
|
||
if (butPtr->relief != TK_RELIEF_FLAT) {
|
||
Tk_Draw3DRectangle(butPtr->display, pixmap, border,0, 0,
|
||
Tk_Width(tkwin), Tk_Height(tkwin), butPtr->borderWidth,
|
||
butPtr->relief);
|
||
}
|
||
|
||
/*
|
||
* Copy the information from the off-screen pixmap onto the screen,
|
||
* then delete the pixmap.
|
||
*/
|
||
|
||
XCopyArea(butPtr->display, pixmap, Tk_WindowId(tkwin),
|
||
butPtr->normalTextGC, 0, 0, Tk_Width(tkwin), Tk_Height(tkwin), 0, 0);
|
||
XFreePixmap(butPtr->display, pixmap);
|
||
}
|
||
|
||
/*
|
||
*--------------------------------------------------------------
|
||
*
|
||
* ButtonEventProc --
|
||
*
|
||
* This procedure is invoked by the Tk dispatcher for various
|
||
* events on buttons.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* When the window gets deleted, internal structures get
|
||
* cleaned up. When it gets exposed, it is redisplayed.
|
||
*
|
||
*--------------------------------------------------------------
|
||
*/
|
||
|
||
static void
|
||
ButtonEventProc(clientData, eventPtr)
|
||
ClientData clientData; /* Information about window. */
|
||
XEvent *eventPtr; /* Information about event. */
|
||
{
|
||
Button *butPtr = (Button *) clientData;
|
||
if ((eventPtr->type == Expose) && (eventPtr->xexpose.count == 0)) {
|
||
if ((butPtr->tkwin != NULL) && !(butPtr->flags & REDRAW_PENDING)) {
|
||
Tk_DoWhenIdle(DisplayButton, (ClientData) butPtr);
|
||
butPtr->flags |= REDRAW_PENDING;
|
||
}
|
||
} else if (eventPtr->type == DestroyNotify) {
|
||
Tcl_DeleteCommand(butPtr->interp, Tk_PathName(butPtr->tkwin));
|
||
butPtr->tkwin = NULL;
|
||
if (butPtr->flags & REDRAW_PENDING) {
|
||
Tk_CancelIdleCall(DisplayButton, (ClientData) butPtr);
|
||
}
|
||
Tk_EventuallyFree((ClientData) butPtr, DestroyButton);
|
||
}
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* ComputeButtonGeometry --
|
||
*
|
||
* After changes in a button's text or bitmap, this procedure
|
||
* recomputes the button's geometry and passes this information
|
||
* along to the geometry manager for the window.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* The button's window may change size.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static void
|
||
ComputeButtonGeometry(butPtr)
|
||
register Button *butPtr; /* Button whose geometry may have changed. */
|
||
{
|
||
XCharStruct bbox;
|
||
int dummy;
|
||
unsigned int width, height;
|
||
|
||
butPtr->selectorSpace = 0;
|
||
if (butPtr->bitmap != None) {
|
||
Tk_SizeOfBitmap(butPtr->display, butPtr->bitmap, &width, &height);
|
||
if (butPtr->width > 0) {
|
||
width = butPtr->width;
|
||
}
|
||
if (butPtr->height > 0) {
|
||
height = butPtr->height;
|
||
}
|
||
if ((butPtr->type >= TYPE_CHECK_BUTTON)
|
||
&& (butPtr->selectorGC != None)) {
|
||
butPtr->selectorSpace = height;
|
||
if (butPtr->type == TYPE_CHECK_BUTTON) {
|
||
butPtr->selectorDiameter = (65*height)/100;
|
||
} else {
|
||
butPtr->selectorDiameter = (75*height)/100;
|
||
}
|
||
}
|
||
} else {
|
||
butPtr->textLength = strlen(butPtr->text);
|
||
XTextExtents(butPtr->fontPtr, butPtr->text, butPtr->textLength,
|
||
&dummy, &dummy, &dummy, &bbox);
|
||
butPtr->leftBearing = bbox.lbearing;
|
||
butPtr->rightBearing = bbox.rbearing;
|
||
width = bbox.rbearing - bbox.lbearing;
|
||
height = butPtr->fontPtr->ascent + butPtr->fontPtr->descent;
|
||
if (butPtr->width > 0) {
|
||
width = butPtr->width * XTextWidth(butPtr->fontPtr, "0", 1);
|
||
}
|
||
if (butPtr->height > 0) {
|
||
height *= butPtr->height;
|
||
}
|
||
if ((butPtr->type >= TYPE_CHECK_BUTTON)
|
||
&& (butPtr->selectorGC != None)) {
|
||
butPtr->selectorDiameter = butPtr->fontPtr->ascent
|
||
+ butPtr->fontPtr->descent;
|
||
if (butPtr->type == TYPE_CHECK_BUTTON) {
|
||
butPtr->selectorDiameter = (80*butPtr->selectorDiameter)/100;
|
||
}
|
||
butPtr->selectorSpace = butPtr->selectorDiameter
|
||
+ XTextWidth(butPtr->fontPtr, "0", 1);
|
||
}
|
||
}
|
||
|
||
/*
|
||
* When issuing the geometry request, add extra space for the selector,
|
||
* if any, and for the border and padding, plus two extra pixels so the
|
||
* display can be offset by 1 pixel in either direction for the raised
|
||
* or lowered effect.
|
||
*/
|
||
|
||
width += 2*butPtr->padX;
|
||
height += 2*butPtr->padY;
|
||
Tk_GeometryRequest(butPtr->tkwin, (int) (width + butPtr->selectorSpace
|
||
+ 2*butPtr->borderWidth + 2),
|
||
(int) (height + 2*butPtr->borderWidth + 2));
|
||
Tk_SetInternalBorder(butPtr->tkwin, butPtr->borderWidth);
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* InvokeButton --
|
||
*
|
||
* This procedure is called to carry out the actions associated
|
||
* with a button, such as invoking a Tcl command or setting a
|
||
* variable. This procedure is invoked, for example, when the
|
||
* button is invoked via the mouse.
|
||
*
|
||
* Results:
|
||
* A standard Tcl return value. Information is also left in
|
||
* interp->result.
|
||
*
|
||
* Side effects:
|
||
* Depends on the button and its associated command.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static int
|
||
InvokeButton(butPtr)
|
||
register Button *butPtr; /* Information about button. */
|
||
{
|
||
if (butPtr->type == TYPE_CHECK_BUTTON) {
|
||
if (butPtr->flags & SELECTED) {
|
||
Tcl_SetVar(butPtr->interp, butPtr->selVarName, butPtr->offValue,
|
||
TCL_GLOBAL_ONLY);
|
||
} else {
|
||
Tcl_SetVar(butPtr->interp, butPtr->selVarName, butPtr->onValue,
|
||
TCL_GLOBAL_ONLY);
|
||
}
|
||
} else if (butPtr->type == TYPE_RADIO_BUTTON) {
|
||
Tcl_SetVar(butPtr->interp, butPtr->selVarName, butPtr->onValue,
|
||
TCL_GLOBAL_ONLY);
|
||
}
|
||
if ((butPtr->type != TYPE_LABEL) && (butPtr->command != NULL)) {
|
||
return TkCopyAndGlobalEval(butPtr->interp, butPtr->command);
|
||
}
|
||
return TCL_OK;
|
||
}
|
||
|
||
/*
|
||
*--------------------------------------------------------------
|
||
*
|
||
* ButtonVarProc --
|
||
*
|
||
* This procedure is invoked when someone changes the
|
||
* state variable associated with a radio button. Depending
|
||
* on the new value of the button's variable, the button
|
||
* may be selected or deselected.
|
||
*
|
||
* Results:
|
||
* NULL is always returned.
|
||
*
|
||
* Side effects:
|
||
* The button may become selected or deselected.
|
||
*
|
||
*--------------------------------------------------------------
|
||
*/
|
||
|
||
/* ARGSUSED */
|
||
static char *
|
||
ButtonVarProc(clientData, interp, name1, name2, flags)
|
||
ClientData clientData; /* Information about button. */
|
||
Tcl_Interp *interp; /* Interpreter containing variable. */
|
||
char *name1; /* Name of variable. */
|
||
char *name2; /* Second part of variable name. */
|
||
int flags; /* Information about what happened. */
|
||
{
|
||
register Button *butPtr = (Button *) clientData;
|
||
char *value;
|
||
|
||
/*
|
||
* If the variable is being unset, then just re-establish the
|
||
* trace unless the whole interpreter is going away.
|
||
*/
|
||
|
||
if (flags & TCL_TRACE_UNSETS) {
|
||
butPtr->flags &= ~SELECTED;
|
||
if ((flags & TCL_TRACE_DESTROYED) && !(flags & TCL_INTERP_DESTROYED)) {
|
||
Tcl_TraceVar2(interp, name1, name2,
|
||
TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
|
||
ButtonVarProc, clientData);
|
||
}
|
||
goto redisplay;
|
||
}
|
||
|
||
/*
|
||
* Use the value of the variable to update the selected status of
|
||
* the button.
|
||
*/
|
||
|
||
value = Tcl_GetVar2(interp, name1, name2, flags & TCL_GLOBAL_ONLY);
|
||
if (strcmp(value, butPtr->onValue) == 0) {
|
||
if (butPtr->flags & SELECTED) {
|
||
return (char *) NULL;
|
||
}
|
||
butPtr->flags |= SELECTED;
|
||
} else if (butPtr->flags & SELECTED) {
|
||
butPtr->flags &= ~SELECTED;
|
||
} else {
|
||
return (char *) NULL;
|
||
}
|
||
|
||
redisplay:
|
||
if ((butPtr->tkwin != NULL) && Tk_IsMapped(butPtr->tkwin)
|
||
&& !(butPtr->flags & REDRAW_PENDING)) {
|
||
Tk_DoWhenIdle(DisplayButton, (ClientData) butPtr);
|
||
butPtr->flags |= REDRAW_PENDING;
|
||
}
|
||
return (char *) NULL;
|
||
}
|
||
|
||
/*
|
||
*--------------------------------------------------------------
|
||
*
|
||
* ButtonTextVarProc --
|
||
*
|
||
* This procedure is invoked when someone changes the variable
|
||
* whose contents are to be displayed in a button.
|
||
*
|
||
* Results:
|
||
* NULL is always returned.
|
||
*
|
||
* Side effects:
|
||
* The text displayed in the button will change to match the
|
||
* variable.
|
||
*
|
||
*--------------------------------------------------------------
|
||
*/
|
||
|
||
/* ARGSUSED */
|
||
static char *
|
||
ButtonTextVarProc(clientData, interp, name1, name2, flags)
|
||
ClientData clientData; /* Information about button. */
|
||
Tcl_Interp *interp; /* Interpreter containing variable. */
|
||
char *name1; /* Name of variable. */
|
||
char *name2; /* Second part of variable name. */
|
||
int flags; /* Information about what happened. */
|
||
{
|
||
register Button *butPtr = (Button *) clientData;
|
||
char *value;
|
||
|
||
/*
|
||
* If the variable is unset, then immediately recreate it unless
|
||
* the whole interpreter is going away.
|
||
*/
|
||
|
||
if (flags & TCL_TRACE_UNSETS) {
|
||
if ((flags & TCL_TRACE_DESTROYED) && !(flags & TCL_INTERP_DESTROYED)) {
|
||
Tcl_SetVar2(interp, name1, name2, butPtr->text,
|
||
flags & TCL_GLOBAL_ONLY);
|
||
Tcl_TraceVar2(interp, name1, name2,
|
||
TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
|
||
ButtonTextVarProc, clientData);
|
||
}
|
||
return (char *) NULL;
|
||
}
|
||
|
||
value = Tcl_GetVar2(interp, name1, name2, flags & TCL_GLOBAL_ONLY);
|
||
if (value == NULL) {
|
||
value = "";
|
||
}
|
||
if (butPtr->text != NULL) {
|
||
ckfree(butPtr->text);
|
||
}
|
||
butPtr->text = ckalloc((unsigned) (strlen(value) + 1));
|
||
strcpy(butPtr->text, value);
|
||
ComputeButtonGeometry(butPtr);
|
||
|
||
if ((butPtr->tkwin != NULL) && Tk_IsMapped(butPtr->tkwin)
|
||
&& !(butPtr->flags & REDRAW_PENDING)) {
|
||
Tk_DoWhenIdle(DisplayButton, (ClientData) butPtr);
|
||
butPtr->flags |= REDRAW_PENDING;
|
||
}
|
||
return (char *) NULL;
|
||
}
|