summaryrefslogtreecommitdiffstats
path: root/unix/tkUnixButton.c
diff options
context:
space:
mode:
authorrjohnson <rjohnson@noemail.net>1998-04-01 09:51:45 (GMT)
committerrjohnson <rjohnson@noemail.net>1998-04-01 09:51:45 (GMT)
commit9c5b7f2b7e472536ed2e7c915ead05e2aa264182 (patch)
tree8fb30cb152c4dc191be47fa043d2e6f5ea38c7ba /unix/tkUnixButton.c
parent1d0efcbe267f2c0eb73869862522fb20fb2d63ca (diff)
downloadtk-9c5b7f2b7e472536ed2e7c915ead05e2aa264182.zip
tk-9c5b7f2b7e472536ed2e7c915ead05e2aa264182.tar.gz
tk-9c5b7f2b7e472536ed2e7c915ead05e2aa264182.tar.bz2
Initial revision
FossilOrigin-Name: 2bf55ca9aa942b581137b9f474da5ad9c1480de4
Diffstat (limited to 'unix/tkUnixButton.c')
-rw-r--r--unix/tkUnixButton.c478
1 files changed, 478 insertions, 0 deletions
diff --git a/unix/tkUnixButton.c b/unix/tkUnixButton.c
new file mode 100644
index 0000000..8c74dcb
--- /dev/null
+++ b/unix/tkUnixButton.c
@@ -0,0 +1,478 @@
+/*
+ * 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.
+ *
+ * SCCS: @(#) tkUnixButton.c 1.4 97/06/06 11:21:40
+ */
+
+#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;
+ 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 == tkDisabledUid) && (butPtr->disabledFg != NULL)) {
+ gc = butPtr->disabledGC;
+ } else if ((butPtr->state == tkActiveUid)
+ && !Tk_StrictMotif(butPtr->tkwin)) {
+ gc = butPtr->activeTextGC;
+ border = butPtr->activeBorder;
+ } else {
+ gc = butPtr->normalTextGC;
+ }
+ if ((butPtr->flags & SELECTED) && (butPtr->state != tkActiveUid)
+ && (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.
+ */
+
+ pixmap = Tk_GetPixmap(butPtr->display, Tk_WindowId(tkwin),
+ Tk_Width(tkwin), Tk_Height(tkwin), Tk_Depth(tkwin));
+ 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 == tkDisabledUid)
+ && ((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 == tkActiveUid) {
+ /*
+ * 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 == tkNormalUid) {
+ /*
+ * 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 == tkNormalUid) {
+ 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 != tkDisabledUid) {
+ 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);
+}