/*
* tkUnixButton.c --
*
* This file implements the Unix specific portion of the button
* widgets.
*
* Copyright (c) 1996 by Sun Microsystems, Inc.
*
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
* RCS: @(#) $Id: tkUnixButton.c,v 1.2 1998/09/14 18:23:55 stanton Exp $
*/
#include "tkButton.h"
/*
* Declaration of Unix specific button structure.
*/
typedef struct UnixButton {
TkButton info; /* Generic button info. */
} UnixButton;
/*
* The class procedure table for the button widgets.
*/
TkClassProcs tkpButtonProcs = {
NULL, /* createProc. */
TkButtonWorldChanged, /* geometryProc. */
NULL /* modalProc. */
};
/*
*----------------------------------------------------------------------
*
* TkpCreateButton --
*
* Allocate a new TkButton structure.
*
* Results:
* Returns a newly allocated TkButton structure.
*
* Side effects:
* Registers an event handler for the widget.
*
*----------------------------------------------------------------------
*/
TkButton *
TkpCreateButton(tkwin)
Tk_Window tkwin;
{
UnixButton *butPtr = (UnixButton *)ckalloc(sizeof(UnixButton));
return (TkButton *) butPtr;
}
/*
*----------------------------------------------------------------------
*
* TkpDisplayButton --
*
* This procedure is invoked to display a button widget. It is
* normally invoked as an idle handler.
*
* Results:
* None.
*
* Side effects:
* Commands are output to X to display the button in its
* current mode. The REDRAW_PENDING flag is cleared.
*
*----------------------------------------------------------------------
*/
void
TkpDisplayButton(clientData)
ClientData clientData; /* Information about widget. */
{
register TkButton *butPtr = (TkButton *) clientData;
GC gc;
Tk_3DBorder border;
Pixmap pixmap;
Tk_Tile tile;
int x = 0; /* Initialization only needed to stop
* compiler warning. */
int y, relief;
register Tk_Window tkwin = butPtr->tkwin;
int width, height;
int offset; /* 0 means this is a label widget. 1 means
* it is a flavor of button, so we offset
* the text to make the button appear to
* move up and down as the relief changes. */
butPtr->flags &= ~REDRAW_PENDING;
if ((butPtr->tkwin == NULL) || !Tk_IsMapped(tkwin)) {
return;
}
border = butPtr->normalBorder;
if ((butPtr->state == TK_STATE_DISABLED) && (butPtr->disabledFg != NULL)) {
gc = butPtr->disabledGC;
} else if ((butPtr->state == TK_STATE_ACTIVE)
&& !Tk_StrictMotif(butPtr->tkwin)) {
gc = butPtr->activeTextGC;
border = butPtr->activeBorder;
} else {
gc = butPtr->normalTextGC;
}
if ((butPtr->flags & SELECTED) && (butPtr->state != TK_STATE_ACTIVE)
&& (butPtr->selectBorder != NULL) && !butPtr->indicatorOn) {
border = butPtr->selectBorder;
}
/*
* Override the relief specified for the button if this is a
* checkbutton or radiobutton and there's no indicator.
*/
relief = butPtr->relief;
if ((butPtr->type >= TYPE_CHECK_BUTTON) && !butPtr->indicatorOn) {
relief = (butPtr->flags & SELECTED) ? TK_RELIEF_SUNKEN
: TK_RELIEF_RAISED;
}
offset = (butPtr->type == TYPE_BUTTON) && !Tk_StrictMotif(butPtr->tkwin);
/*
* 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.
*/
if ((butPtr->state == TK_STATE_ACTIVE) && (butPtr->activeTile != NULL)) {
tile = butPtr->activeTile;
} else if ((butPtr->state == TK_STATE_DISABLED) &&
(butPtr->disabledTile != NULL)) {
tile = butPtr->disabledTile;
} else {
tile = butPtr->tile;
}
pixmap = Tk_GetPixmap(butPtr->display, Tk_WindowId(tkwin),
Tk_Width(tkwin), Tk_Height(tkwin), Tk_Depth(tkwin));
if (Tk_PixmapOfTile(tile) != None) {
if (butPtr->tsoffset.flags) {
int w=0; int h=0;
if (butPtr->tsoffset.flags & (TK_OFFSET_CENTER|TK_OFFSET_MIDDLE)) {
Tk_SizeOfTile(tile, &w, &h);
}
if (butPtr->tsoffset.flags & TK_OFFSET_LEFT) {
w = 0;
} else if (butPtr->tsoffset.flags & TK_OFFSET_RIGHT) {
w = Tk_Width(tkwin);
} else {
w = (Tk_Width(tkwin) - w) / 2;
}
if (butPtr->tsoffset.flags & TK_OFFSET_TOP) {
h = 0;
} else if (butPtr->tsoffset.flags & TK_OFFSET_BOTTOM) {
h = Tk_Height(tkwin);
} else {
h = (Tk_Height(tkwin) - h) / 2;
}
XSetTSOrigin(butPtr->display, butPtr->copyGC, w , h);
} else {
Tk_SetTileOrigin(tkwin, butPtr->copyGC, butPtr->tsoffset.xoffset,
butPtr->tsoffset.yoffset);
}
XFillRectangle(butPtr->display, pixmap, butPtr->copyGC, 0, 0,
Tk_Width(tkwin), Tk_Height(tkwin));
XSetTSOrigin(butPtr->display, butPtr->copyGC, 0, 0);
} else {
Tk_Fill3DRectangle(tkwin, pixmap, border, 0, 0, Tk_Width(tkwin),
Tk_Height(tkwin), 0, TK_RELIEF_FLAT);
}
/*
* Display image or bitmap or text for button.
*/
if (butPtr->image != None) {
Tk_SizeOfImage(butPtr->image, &width, &height);
imageOrBitmap:
TkComputeAnchor(butPtr->anchor, tkwin, 0, 0,
butPtr->indicatorSpace + width, height, &x, &y);
x += butPtr->indicatorSpace;
x += offset;
y += offset;
if (relief == TK_RELIEF_RAISED) {
x -= offset;
y -= offset;
} else if (relief == TK_RELIEF_SUNKEN) {
x += offset;
y += offset;
}
if (butPtr->image != NULL) {
if ((butPtr->selectImage != NULL) && (butPtr->flags & SELECTED)) {
Tk_RedrawImage(butPtr->selectImage, 0, 0, width, height, pixmap,
x, y);
} else {
Tk_RedrawImage(butPtr->image, 0, 0, width, height, pixmap,
x, y);
}
} else {
XSetClipOrigin(butPtr->display, gc, x, y);
XCopyPlane(butPtr->display, butPtr->bitmap, pixmap, gc, 0, 0,
(unsigned int) width, (unsigned int) height, x, y, 1);
XSetClipOrigin(butPtr->display, gc, 0, 0);
}
y += height/2;
} else if (butPtr->bitmap != None) {
Tk_SizeOfBitmap(butPtr->display, butPtr->bitmap, &width, &height);
goto imageOrBitmap;
} else {
TkComputeAnchor(butPtr->anchor, tkwin, butPtr->padX, butPtr->padY,
butPtr->indicatorSpace + butPtr->textWidth, butPtr->textHeight,
&x, &y);
x += butPtr->indicatorSpace;
x += offset;
y += offset;
if (relief == TK_RELIEF_RAISED) {
x -= offset;
y -= offset;
} else if (relief == TK_RELIEF_SUNKEN) {
x += offset;
y += offset;
}
Tk_DrawTextLayout(butPtr->display, pixmap, gc, butPtr->textLayout,
x, y, 0, -1);
Tk_UnderlineTextLayout(butPtr->display, pixmap, gc,
butPtr->textLayout, x, y, butPtr->underline);
y += butPtr->textHeight/2;
}
/*
* Draw the indicator for check buttons and radio buttons. At this
* point x and y refer to the top-left corner of the text or image
* or bitmap.
*/
if ((butPtr->type == TYPE_CHECK_BUTTON) && butPtr->indicatorOn) {
int dim;
dim = butPtr->indicatorDiameter;
x -= butPtr->indicatorSpace;
y -= dim/2;
if (dim > 2*butPtr->borderWidth) {
Tk_Draw3DRectangle(tkwin, pixmap, border, x, y, dim, dim,
butPtr->borderWidth,
(butPtr->flags & SELECTED) ? TK_RELIEF_SUNKEN :
TK_RELIEF_RAISED);
x += butPtr->borderWidth;
y += butPtr->borderWidth;
dim -= 2*butPtr->borderWidth;
if (butPtr->flags & SELECTED) {
GC gc;
gc = Tk_3DBorderGC(tkwin,(butPtr->selectBorder != NULL)
? butPtr->selectBorder : butPtr->normalBorder,
TK_3D_FLAT_GC);
XFillRectangle(butPtr->display, pixmap, gc, x, y,
(unsigned int) dim, (unsigned int) dim);
} else {
Tk_Fill3DRectangle(tkwin, pixmap, butPtr->normalBorder, x, y,
dim, dim, butPtr->borderWidth, TK_RELIEF_FLAT);
}
}
} else if ((butPtr->type == TYPE_RADIO_BUTTON) && butPtr->indicatorOn) {
XPoint points[4];
int radius;
radius = butPtr->indicatorDiameter/2;
points[0].x = x - butPtr->indicatorSpace;
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) {
GC gc;
gc = Tk_3DBorderGC(tkwin, (butPtr->selectBorder != NULL)
? butPtr->selectBorder : butPtr->normalBorder,
TK_3D_FLAT_GC);
XFillPolygon(butPtr->display, pixmap, gc, points, 4, Convex,
CoordModeOrigin);
} else {
Tk_Fill3DPolygon(tkwin, pixmap, butPtr->normalBorder, points,
4, butPtr->borderWidth, TK_RELIEF_FLAT);
}
Tk_Draw3DPolygon(tkwin, pixmap, border, points, 4, butPtr->borderWidth,
(butPtr->flags & SELECTED) ? TK_RELIEF_SUNKEN :
TK_RELIEF_RAISED);
}
/*
* If the button is disabled with a stipple rather than a special
* foreground color, generate the stippled effect. If the widget
* is selected and we use a different background color when selected,
* must temporarily modify the GC.
*/
if ((butPtr->state == TK_STATE_DISABLED)
&& ((butPtr->disabledFg == NULL) || (butPtr->image != NULL))) {
if ((butPtr->flags & SELECTED) && !butPtr->indicatorOn
&& (butPtr->selectBorder != NULL)) {
XSetForeground(butPtr->display, butPtr->disabledGC,
Tk_3DBorderColor(butPtr->selectBorder)->pixel);
}
XFillRectangle(butPtr->display, pixmap, butPtr->disabledGC,
butPtr->inset, butPtr->inset,
(unsigned) (Tk_Width(tkwin) - 2*butPtr->inset),
(unsigned) (Tk_Height(tkwin) - 2*butPtr->inset));
if ((butPtr->flags & SELECTED) && !butPtr->indicatorOn
&& (butPtr->selectBorder != NULL)) {
XSetForeground(butPtr->display, butPtr->disabledGC,
Tk_3DBorderColor(butPtr->normalBorder)->pixel);
}
}
/*
* Draw the border and traversal highlight last. This way, if the
* button's contents overflow they'll be covered up by the border.
* This code is complicated by the possible combinations of focus
* highlight and default rings. We draw the focus and highlight rings
* using the highlight border and highlight foreground color.
*/
if (relief != TK_RELIEF_FLAT) {
int inset = butPtr->highlightWidth;
if (butPtr->defaultState == TK_STATE_ACTIVE) {
/*
* Draw the default ring with 2 pixels of space between the
* default ring and the button and the default ring and the
* focus ring. Note that we need to explicitly draw the space
* in the highlightBorder color to ensure that we overwrite any
* overflow text and/or a different button background color.
*/
Tk_Draw3DRectangle(tkwin, pixmap, butPtr->highlightBorder, inset,
inset, Tk_Width(tkwin) - 2*inset,
Tk_Height(tkwin) - 2*inset, 2, TK_RELIEF_FLAT);
inset += 2;
Tk_Draw3DRectangle(tkwin, pixmap, butPtr->highlightBorder, inset,
inset, Tk_Width(tkwin) - 2*inset,
Tk_Height(tkwin) - 2*inset, 1, TK_RELIEF_SUNKEN);
inset++;
Tk_Draw3DRectangle(tkwin, pixmap, butPtr->highlightBorder, inset,
inset, Tk_Width(tkwin) - 2*inset,
Tk_Height(tkwin) - 2*inset, 2, TK_RELIEF_FLAT);
inset += 2;
} else if (butPtr->defaultState == TK_STATE_NORMAL) {
/*
* Leave room for the default ring and write over any text or
* background color.
*/
Tk_Draw3DRectangle(tkwin, pixmap, butPtr->highlightBorder, 0,
0, Tk_Width(tkwin),
Tk_Height(tkwin), 5, TK_RELIEF_FLAT);
inset += 5;
}
/*
* Draw the button border.
*/
Tk_Draw3DRectangle(tkwin, pixmap, border, inset, inset,
Tk_Width(tkwin) - 2*inset, Tk_Height(tkwin) - 2*inset,
butPtr->borderWidth, relief);
}
if (butPtr->highlightWidth != 0) {
GC gc;
if (butPtr->flags & GOT_FOCUS) {
gc = Tk_GCForColor(butPtr->highlightColorPtr, pixmap);
} else {
gc = Tk_GCForColor(Tk_3DBorderColor(butPtr->highlightBorder),
pixmap);
}
/*
* Make sure the focus ring shrink-wraps the actual button, not the
* padding space left for a default ring.
*/
if (butPtr->defaultState == TK_STATE_NORMAL) {
TkDrawInsetFocusHighlight(tkwin, gc, butPtr->highlightWidth,
pixmap, 5);
} else {
Tk_DrawFocusHighlight(tkwin, gc, butPtr->highlightWidth, pixmap);
}
}
/*
* Copy the information from the off-screen pixmap onto the screen,
* then delete the pixmap.
*/
XCopyArea(butPtr->display, pixmap, Tk_WindowId(tkwin),
butPtr->copyGC, 0, 0, (unsigned) Tk_Width(tkwin),
(unsigned) Tk_Height(tkwin), 0, 0);
Tk_FreePixmap(butPtr->display, pixmap);
}
/*
*----------------------------------------------------------------------
*
* TkpComputeButtonGeometry --
*
* 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.
*
*----------------------------------------------------------------------
*/
void
TkpComputeButtonGeometry(butPtr)
register TkButton *butPtr; /* Button whose geometry may have changed. */
{
int width, height, avgWidth;
Tk_FontMetrics fm;
if (butPtr->highlightWidth < 0) {
butPtr->highlightWidth = 0;
}
butPtr->inset = butPtr->highlightWidth + butPtr->borderWidth;
/*
* Leave room for the default ring if needed.
*/
if (butPtr->defaultState != TK_STATE_DISABLED) {
butPtr->inset += 5;
}
butPtr->indicatorSpace = 0;
if (butPtr->image != NULL) {
Tk_SizeOfImage(butPtr->image, &width, &height);
imageOrBitmap:
if (butPtr->width > 0) {
width = butPtr->width;
}
if (butPtr->height > 0) {
height = butPtr->height;
}
if ((butPtr->type >= TYPE_CHECK_BUTTON) && butPtr->indicatorOn) {
butPtr->indicatorSpace = height;
if (butPtr->type == TYPE_CHECK_BUTTON) {
butPtr->indicatorDiameter = (65*height)/100;
} else {
butPtr->indicatorDiameter = (75*height)/100;
}
}
} else if (butPtr->bitmap != None) {
Tk_SizeOfBitmap(butPtr->display, butPtr->bitmap, &width, &height);
goto imageOrBitmap;
} else {
Tk_FreeTextLayout(butPtr->textLayout);
butPtr->textLayout = Tk_ComputeTextLayout(butPtr->tkfont,
butPtr->text, -1, butPtr->wrapLength, butPtr->justify, 0,
&butPtr->textWidth, &butPtr->textHeight);
width = butPtr->textWidth;
height = butPtr->textHeight;
avgWidth = Tk_TextWidth(butPtr->tkfont, "0", 1);
Tk_GetFontMetrics(butPtr->tkfont, &fm);
if (butPtr->width > 0) {
width = butPtr->width * avgWidth;
}
if (butPtr->height > 0) {
height = butPtr->height * fm.linespace;
}
if ((butPtr->type >= TYPE_CHECK_BUTTON) && butPtr->indicatorOn) {
butPtr->indicatorDiameter = fm.linespace;
if (butPtr->type == TYPE_CHECK_BUTTON) {
butPtr->indicatorDiameter = (80*butPtr->indicatorDiameter)/100;
}
butPtr->indicatorSpace = butPtr->indicatorDiameter + avgWidth;
}
}
/*
* When issuing the geometry request, add extra space for the indicator,
* 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.
*/
if ((butPtr->image == NULL) && (butPtr->bitmap == None)) {
width += 2*butPtr->padX;
height += 2*butPtr->padY;
}
if ((butPtr->type == TYPE_BUTTON) && !Tk_StrictMotif(butPtr->tkwin)) {
width += 2;
height += 2;
}
Tk_GeometryRequest(butPtr->tkwin, (int) (width + butPtr->indicatorSpace
+ 2*butPtr->inset), (int) (height + 2*butPtr->inset));
Tk_SetInternalBorder(butPtr->tkwin, butPtr->inset);
}