cpython-source-deps/unix/tkUnixButton.c at tk · python/cpython-source-deps · GitHub

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* tkUnixButton.c --

* This file implements the Unix specific portion of the button widgets.

* See the file "license.terms" for information on usage and redistribution of

* this file, and for a DISCLAIMER OF ALL WARRANTIES.

#include "tkInt.h"

#include "tkButton.h"

#include "tk3d.h"

* Shared with menu widget.

MODULE_SCOPE void TkpDrawCheckIndicator(Tk_Window tkwin,

Display *display, Drawable d, int x, int y,

Tk_3DBorder bgBorder, XColor *indicatorColor,

XColor *selectColor, XColor *disColor, int on,

int disabled, int mode);

* Declaration of Unix specific button structure.

typedef struct UnixButton {

TkButton info; /* Generic button info. */

} UnixButton;

* The class function table for the button widgets.

const Tk_ClassProcs tkpButtonProcs = {

sizeof(Tk_ClassProcs), /* size */

TkButtonWorldChanged, /* worldChangedProc */

NULL, /* createProc */

NULL /* modalProc */

};

* Indicator draw modes

#define CHECK_BUTTON 0

#define CHECK_MENU 1

#define RADIO_BUTTON 2

#define RADIO_MENU 3

* Indicator sizes

#define CHECK_BUTTON_DIM 16

#define CHECK_MENU_DIM 8

#define RADIO_BUTTON_DIM 16

#define RADIO_MENU_DIM 8

* Data of the SVG images used for drawing the indicators

static const char checkbtnOffData[] =

"<svg id='checkbutton' width='16' height='16' version='1.1' xmlns='http://www.w3.org/2000/svg'>\n"

" <path id='borderdark' d='m0 0v16l1-1v-14h14l1-1h-16z' fill='#DARKKK'/>\n"

" <path id='borderlight' d='m16 0-1 1v14h-14l-1 1h16v-16z' fill='#LIGHTT'/>\n"

" <rect id='rectbackdrop' x='2' y='2' width='12' height='12' fill='#INTROR'/>\n"

"</svg>";

static const char checkbtnOnData[] =

"<svg id='checkbutton' width='16' height='16' version='1.1' xmlns='http://www.w3.org/2000/svg'>\n"

" <path id='borderdark' d='m0 0v16l1-1v-14h14l1-1h-16z' fill='#DARKKK'/>\n"

" <path id='borderlight' d='m16 0-1 1v14h-14l-1 1h16v-16z' fill='#LIGHTT'/>\n"

" <rect id='rectbackdrop' x='2' y='2' width='12' height='12' fill='#INTROR'/>\n"

" <path id='indicator' d='m4.5 8 3 3 4-6' fill='none' stroke='#INDCTR' stroke-linecap='round' stroke-linejoin='round' stroke-width='2'/>\n"

"</svg>";

static const char radiobtnOffData[] =

"<svg id='radiobutton' width='16' height='16' version='1.1' xmlns='http://www.w3.org/2000/svg'>\n"

" <defs>\n"

" <linearGradient id='gradient' x1='5' y1='5' x2='11' y2='11' gradientUnits='userSpaceOnUse'>\n"

" <stop stop-color='#DARKKK' offset='0'/>\n"

" <stop stop-color='#LIGHTT' offset='1' stop-opacity='0'/>\n"

" </linearGradient>\n"

" </defs>\n"

" <circle cx='8' cy='8' r='8' fill='url(#gradient)'/>\n"

" <circle cx='8' cy='8' r='6.5' fill='#INTROR'/>\n"

"</svg>";

static const char radiobtnOnData[] =

"<svg id='radiobutton' width='16' height='16' version='1.1' xmlns='http://www.w3.org/2000/svg'>\n"

" <defs>\n"

" <linearGradient id='gradient' x1='5' y1='5' x2='11' y2='11' gradientUnits='userSpaceOnUse'>\n"

" <stop stop-color='#DARKKK' offset='0'/>\n"

" <stop stop-color='#LIGHTT' offset='1' stop-opacity='0'/>\n"

" </linearGradient>\n"

" </defs>\n"

" <circle cx='8' cy='8' r='8' fill='url(#gradient)'/>\n"

" <circle cx='8' cy='8' r='7' fill='#INTROR'/>\n"

" <circle cx='8' cy='8' r='4' fill='#INDCTR'/>\n"

"</svg>";

static const char menuOffData[] =

"<svg width='8' height='8' version='1.1' xmlns='http://www.w3.org/2000/svg'></svg>";

static const char checkmenuOnData[] =

"<svg width='8' height='8' version='1.1' xmlns='http://www.w3.org/2000/svg'>\n"

" <path id='indicator' d='m1 3.5 2.5 3 3.5-5' fill='none' stroke='#INDCTR' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.975'/>\n"

"</svg>";

static const char radiomenuOnData[] =

"<svg width='8' height='8' version='1.1' xmlns='http://www.w3.org/2000/svg'>\n"

" <circle cx='4' cy='4' r='3' fill='#INDCTR'/>\n"

"</svg>";

*----------------------------------------------------------------------

* TkpDrawCheckIndicator -

* Draws the checkbox image in the drawable at the (x,y) location, value,

* and state given. This routine is used by the button and menu widgets.

* Results:

* None.

* Side effects:

* An image is drawn in the drawable at the location given.

*----------------------------------------------------------------------

static void

ColorToStr(

const XColor *colorPtr, /* specifies a color */

char *colorStr) /* memory area to which the color is to be

output in the format "RRGGBB" */

{

snprintf(colorStr, 7, "%02x%02x%02x",

colorPtr->red >> 8, colorPtr->green >> 8, colorPtr->blue >> 8);

}

static void

ImageChanged( /* to be passed to Tk_GetImage() */

void *clientData,

int x, int y, int width, int height,

int imageWidth, int imageHeight)

{

(void)clientData;

(void)x; (void)y; (void)width; (void)height;

(void)imageWidth; (void)imageHeight;

}

void

TkpDrawCheckIndicator(

Tk_Window tkwin, /* handle for resource alloc */

Display *display,

Drawable d, /* what to draw on */

int x, int y, /* where to draw */

Tk_3DBorder bgBorder, /* colors of the border */

XColor *indicatorColor, /* color of the indicator */

XColor *selectColor, /* color when selected */

XColor *disableColor, /* color when disabled */

int on, /* are we on? */

int disabled, /* are we disabled? */

int mode) /* kind of indicator to draw */

{

const char *svgDataPtr;

int hasBorder, hasInterior, dim;

double scalingLevel = TkScalingLevel(tkwin);

TkBorder *bg_brdr = (TkBorder*)bgBorder;

char darkColorStr[7], lightColorStr[7], interiorColorStr[7], indicatorColorStr[7];

Tcl_Interp *interp = Tk_Interp(tkwin);

char imgName[60];

Tk_Image img;

size_t svgDataLen;

char *svgDataCopy;

char *darkColorPtr, *lightColorPtr, *interiorColorPtr, *indicatorColorPtr;

const char *cmdFmt;

size_t scriptSize;

char *script;

int code;

* Sanity check

if (tkwin == NULL || display == NULL || d == None || bgBorder == NULL

|| indicatorColor == NULL) {

return;

}

if (disableColor == NULL) {

disableColor = bg_brdr->bgColorPtr;

}

if (selectColor == NULL) {

selectColor = bg_brdr->bgColorPtr;

}

* Determine the SVG data to use for the

* photo image and the latter's dimensions

switch (mode) {

default:

case CHECK_BUTTON:

svgDataPtr = (on == 0 ? checkbtnOffData : checkbtnOnData);

hasBorder = 1; hasInterior = 1;

dim = CHECK_BUTTON_DIM;

break;

case CHECK_MENU:

svgDataPtr = (on == 0 ? menuOffData : checkmenuOnData);

hasBorder = 0; hasInterior = 0;

dim = CHECK_MENU_DIM;

break;

case RADIO_BUTTON:

svgDataPtr = (on == 0 ? radiobtnOffData : radiobtnOnData);

hasBorder = 1; hasInterior = 1;

dim = RADIO_BUTTON_DIM;

break;

case RADIO_MENU:

svgDataPtr = (on == 0 ? menuOffData : radiomenuOnData);

hasBorder = 0; hasInterior = 0;

dim = RADIO_MENU_DIM;

break;

}

dim = (int)(dim * scalingLevel);

* Construct the color strings darkColorStr, lightColorStr,

* interiorColorStr, and indicatorColorStr

TkpGetShadows(bg_brdr, tkwin);

if (bg_brdr->darkColorPtr == NULL) {

strcpy(darkColorStr, "000000");

} else {

ColorToStr(Tk_GetColorByValue(tkwin, bg_brdr->darkColorPtr),

darkColorStr);

}

if (bg_brdr->lightColorPtr == NULL) {

strcpy(lightColorStr, "ffffff");

} else {

ColorToStr(Tk_GetColorByValue(tkwin, bg_brdr->lightColorPtr),

lightColorStr);

}

if (on == 2 || disabled) { /* tri-state or disabled */

ColorToStr(Tk_GetColorByValue(tkwin, bg_brdr->bgColorPtr),

interiorColorStr);

ColorToStr(Tk_GetColorByValue(tkwin, disableColor),

indicatorColorStr);

} else {

ColorToStr(Tk_GetColorByValue(tkwin, selectColor),

interiorColorStr);

ColorToStr(Tk_GetColorByValue(tkwin, indicatorColor),

indicatorColorStr);

}

* Check whether there is an SVG image of this size

* for the value of mode and these color strings

snprintf(imgName, sizeof(imgName),

"::tk::icons::indicator%d_%d_%s_%s_%s_%s",

dim, mode,

hasBorder ? darkColorStr : "XXXXXX",

hasBorder ? lightColorStr : "XXXXXX",

hasInterior ? interiorColorStr : "XXXXXX",

on ? indicatorColorStr : "XXXXXX");

img = Tk_GetImage(interp, tkwin, imgName, ImageChanged, NULL);

if (img == NULL) {

* Copy the string pointed to by svgDataPtr to

* a newly allocated memory area svgDataCopy

svgDataLen = strlen(svgDataPtr);

svgDataCopy = (char *)attemptckalloc(svgDataLen + 1);

if (svgDataCopy == NULL) {

return;

}

memcpy(svgDataCopy, svgDataPtr, svgDataLen);

svgDataCopy[svgDataLen] = '\0';

* Update the colors within svgDataCopy

darkColorPtr = strstr(svgDataCopy, "DARKKK");

lightColorPtr = strstr(svgDataCopy, "LIGHTT");

interiorColorPtr = strstr(svgDataCopy, "INTROR");

indicatorColorPtr = strstr(svgDataCopy, "INDCTR");

if (darkColorPtr != NULL) {

memcpy(darkColorPtr, darkColorStr, 6);

}

if (lightColorPtr != NULL) {

memcpy(lightColorPtr, lightColorStr, 6);

}

if (interiorColorPtr != NULL) {

memcpy(interiorColorPtr, interiorColorStr, 6);

}

if (indicatorColorPtr != NULL) {

memcpy(indicatorColorPtr, indicatorColorStr, 6);

}

* Create an SVG photo image from svgDataCopy

cmdFmt = "image create photo %s -format $::tk::svgFmt -data {%s}";

scriptSize = strlen(cmdFmt) + strlen(imgName) + svgDataLen;

script = (char *)attemptckalloc(scriptSize);

if (script == NULL) {

ckfree(svgDataCopy);

return;

}

snprintf(script, scriptSize, cmdFmt, imgName, svgDataCopy);

ckfree(svgDataCopy);

code = Tcl_EvalEx(interp, script, TCL_INDEX_NONE, TCL_EVAL_GLOBAL);

ckfree(script);

if (code != TCL_OK) {

Tcl_BackgroundException(interp, code);

return;

}

img = Tk_GetImage(interp, tkwin, imgName, ImageChanged, NULL);

}

* Adjust the image's coordinates in the drawable and display the image

x -= dim/2;

y -= dim/2;

Tk_RedrawImage(img, 0, 0, dim, dim, d, x, y);

Tk_FreeImage(img);

}

*----------------------------------------------------------------------

* TkpCreateButton --

* Allocate a new TkButton structure.

* Results:

* Returns a newly allocated TkButton structure.

* Side effects:

* Registers an event handler for the widget.

*----------------------------------------------------------------------

TkButton *

TkpCreateButton(

TCL_UNUSED(Tk_Window))

{

return (TkButton *)ckalloc(sizeof(UnixButton));

}

*----------------------------------------------------------------------

* TkpDisplayButton --

* This function 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.

*----------------------------------------------------------------------

static void

ShiftByOffset(

TkButton *butPtr,

int relief,

int *x, /* shift this x coordinate */

int *y, /* shift this y coordinate */

int width, /* width of image/text */

int height) /* height of image/text */

{

if (relief != TK_RELIEF_RAISED

&& butPtr->type == TYPE_BUTTON

&& !Tk_StrictMotif(butPtr->tkwin)) {

int shiftX;

int shiftY;

* This is an (unraised) button widget, so we offset the text to make

* the button appear to move up and down as the relief changes.

shiftX = shiftY = (relief == TK_RELIEF_SUNKEN) ? 2 : 1;

if (relief != TK_RELIEF_RIDGE) {

* Take back one pixel if the padding is even, otherwise the

* content will be displayed too far right/down.

if ((Tk_Width(butPtr->tkwin) - width) % 2 == 0) {

shiftX -= 1;

}

if ((Tk_Height(butPtr->tkwin) - height) % 2 == 0) {

shiftY -= 1;

}

*x += shiftX;

*y += shiftY;

}

void

TkpDisplayButton(

void *clientData) /* Information about widget. */

{

TkButton *butPtr = (TkButton *)clientData;

GC gc;

Tk_3DBorder border;

Pixmap pixmap;

int x = 0; /* Initialization only needed to stop compiler

* warning. */

int y, relief;

Tk_Window tkwin = butPtr->tkwin;

int width = 0, height = 0, fullWidth, fullHeight;

int textXOffset, textYOffset;

int haveImage = 0, haveText = 0;

int imageWidth, imageHeight;

int imageXOffset = 0, imageYOffset = 0;

/* image information that will be used to

* restrict disabled pixmap as well */

int padX, padY, borderWidth, highlightWidth;

butPtr->flags &= ~REDRAW_PENDING;

if ((butPtr->tkwin == NULL) || !Tk_IsMapped(tkwin)) {

return;

}

border = butPtr->normalBorder;

if ((butPtr->state == STATE_DISABLED) && (butPtr->disabledFg != NULL)) {

gc = butPtr->disabledGC;

} else if ((butPtr->state == STATE_ACTIVE)

&& !Tk_StrictMotif(butPtr->tkwin)) {

gc = butPtr->activeTextGC;

border = butPtr->activeBorder;

} else {

gc = butPtr->normalTextGC;

}

if ((butPtr->flags & SELECTED) && (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. The new relief is as follows:

* If the button is select --> "sunken"

* If relief==overrelief --> relief

* Otherwise --> overrelief

* The effect we are trying to achieve is as follows:

* value mouse-over? --> relief

* ------- ------------ --------

* off no flat

* off yes raised

* on no sunken

* on yes sunken

* This is accomplished by configuring the checkbutton or radiobutton like

* this:

* -indicatoron 0 -overrelief raised -offrelief flat

* Bindings (see library/button.tcl) will copy the -overrelief into

* -relief on mouseover. Hence, we can tell if we are in mouse-over by

* comparing relief against overRelief. This is an aweful kludge, but it

* gives use the desired behavior while keeping the code backwards

* compatible.

relief = butPtr->relief;

if ((butPtr->type >= TYPE_CHECK_BUTTON) && !butPtr->indicatorOn) {

if (butPtr->flags & SELECTED) {

relief = TK_RELIEF_SUNKEN;

} else if (butPtr->overRelief != relief) {

relief = butPtr->offRelief;

}

* In order to avoid screen flashes, this function 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-screen 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 != NULL) {

Tk_SizeOfImage(butPtr->image, &width, &height);

haveImage = 1;

} else if (butPtr->bitmap != None) {

Tk_SizeOfBitmap(butPtr->display, butPtr->bitmap, &width, &height);

haveImage = 1;

}

imageWidth = width;

imageHeight = height;

Tk_GetPixelsFromObj(NULL, tkwin, butPtr->padXObj, &padX);

Tk_GetPixelsFromObj(NULL, tkwin, butPtr->padYObj, &padY);

Tk_GetPixelsFromObj(NULL, tkwin, butPtr->borderWidthObj, &borderWidth);

Tk_GetPixelsFromObj(NULL, tkwin, butPtr->highlightWidthObj, &highlightWidth);

haveText = (butPtr->textWidth != 0 && butPtr->textHeight != 0);

if (butPtr->compound != COMPOUND_NONE && haveImage && haveText) {

textXOffset = 0;

textYOffset = 0;

fullWidth = 0;

fullHeight = 0;

switch ((enum compound) butPtr->compound) {

case COMPOUND_TOP:

case COMPOUND_BOTTOM:

* Image is above or below text.

if (butPtr->compound == COMPOUND_TOP) {

textYOffset = height + padY;

} else {

imageYOffset = butPtr->textHeight + padY;

}

fullHeight = height + butPtr->textHeight + padY;

fullWidth = (width > butPtr->textWidth ? width :

butPtr->textWidth);

textXOffset = (fullWidth - butPtr->textWidth)/2;

imageXOffset = (fullWidth - width)/2;

break;

case COMPOUND_LEFT:

case COMPOUND_RIGHT:

* Image is left or right of text.

if (butPtr->compound == COMPOUND_LEFT) {

textXOffset = width + padX;

} else {

imageXOffset = butPtr->textWidth + padX;

}

fullWidth = butPtr->textWidth + padX + width;

fullHeight = (height > butPtr->textHeight ? height :

butPtr->textHeight);

textYOffset = (fullHeight - butPtr->textHeight)/2;

imageYOffset = (fullHeight - height)/2;

break;

case COMPOUND_CENTER:

* Image and text are superimposed.

fullWidth = (width > butPtr->textWidth ? width :

butPtr->textWidth);

fullHeight = (height > butPtr->textHeight ? height :

butPtr->textHeight);

textXOffset = (fullWidth - butPtr->textWidth)/2;

imageXOffset = (fullWidth - width)/2;

textYOffset = (fullHeight - butPtr->textHeight)/2;

imageYOffset = (fullHeight - height)/2;

break;

case COMPOUND_NONE:

break;

}

TkComputeAnchor(butPtr->anchor, tkwin, padX, padY,

butPtr->indicatorSpace + fullWidth, fullHeight, &x, &y);

x += butPtr->indicatorSpace;

ShiftByOffset(butPtr, relief, &x, &y, width, height);

imageXOffset += x;

imageYOffset += y;

if (butPtr->image != NULL) {

* Do boundary clipping, so that Tk_RedrawImage is passed valid

* coordinates. [Bug 979239]

if (imageXOffset < 0) {

imageXOffset = 0;

}

if (imageYOffset < 0) {

imageYOffset = 0;

}

if (width > Tk_Width(tkwin)) {

width = Tk_Width(tkwin);

}

if (height > Tk_Height(tkwin)) {

height = Tk_Height(tkwin);

}

if ((width + imageXOffset) > Tk_Width(tkwin)) {

imageXOffset = Tk_Width(tkwin) - width;

}

if ((height + imageYOffset) > Tk_Height(tkwin)) {

imageYOffset = Tk_Height(tkwin) - height;

}

if ((butPtr->selectImage != NULL) && (butPtr->flags & SELECTED)) {

Tk_RedrawImage(butPtr->selectImage, 0, 0,

width, height, pixmap, imageXOffset, imageYOffset);

} else if ((butPtr->tristateImage != NULL) && (butPtr->flags & TRISTATED)) {

Tk_RedrawImage(butPtr->tristateImage, 0, 0,

width, height, pixmap, imageXOffset, imageYOffset);

} else {

Tk_RedrawImage(butPtr->image, 0, 0, width,

height, pixmap, imageXOffset, imageYOffset);

}

} else {

XSetClipOrigin(butPtr->display, gc, imageXOffset, imageYOffset);

XCopyPlane(butPtr->display, butPtr->bitmap, pixmap, gc,

0, 0, (unsigned int) width, (unsigned int) height,

imageXOffset, imageYOffset, 1);

XSetClipOrigin(butPtr->display, gc, 0, 0);

}

Tk_DrawTextLayout(butPtr->display, pixmap, gc,

butPtr->textLayout, x + textXOffset, y + textYOffset, 0, -1);

Tk_UnderlineTextLayout(butPtr->display, pixmap, gc,

butPtr->textLayout, x + textXOffset, y + textYOffset,

butPtr->underline);

y += fullHeight/2;

} else {

if (haveImage) {

TkComputeAnchor(butPtr->anchor, tkwin, 0, 0,

butPtr->indicatorSpace + width, height, &x, &y);

x += butPtr->indicatorSpace;

ShiftByOffset(butPtr, relief, &x, &y, width, height);

imageXOffset += x;

imageYOffset += y;

if (butPtr->image != NULL) {

* Do boundary clipping, so that Tk_RedrawImage is passed

* valid coordinates. [Bug 979239]

if (imageXOffset < 0) {

imageXOffset = 0;

}

if (imageYOffset < 0) {

imageYOffset = 0;

}

if (width > Tk_Width(tkwin)) {

width = Tk_Width(tkwin);

}

if (height > Tk_Height(tkwin)) {

height = Tk_Height(tkwin);

}

if ((width + imageXOffset) > Tk_Width(tkwin)) {

imageXOffset = Tk_Width(tkwin) - width;

}

if ((height + imageYOffset) > Tk_Height(tkwin)) {

imageYOffset = Tk_Height(tkwin) - height;

}

if ((butPtr->selectImage != NULL) &&

(butPtr->flags & SELECTED)) {

Tk_RedrawImage(butPtr->selectImage, 0, 0, width,

height, pixmap, imageXOffset, imageYOffset);

} else if ((butPtr->tristateImage != NULL) &&

(butPtr->flags & TRISTATED)) {

Tk_RedrawImage(butPtr->tristateImage, 0, 0, width,

height, pixmap, imageXOffset, imageYOffset);

} else {

Tk_RedrawImage(butPtr->image, 0, 0, width, height, pixmap,

imageXOffset, imageYOffset);

}

} 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 {

TkComputeAnchor(butPtr->anchor, tkwin, padX, padY,

butPtr->indicatorSpace + butPtr->textWidth,

butPtr->textHeight, &x, &y);

x += butPtr->indicatorSpace;

ShiftByOffset(butPtr, relief, &x, &y, width, height);

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->type == TYPE_RADIO_BUTTON)

&& butPtr->indicatorOn

&& butPtr->indicatorDiameter > 2 * borderWidth) {

TkBorder *selBorder = (TkBorder *) butPtr->selectBorder;

XColor *selColor = NULL;

int btype = (butPtr->type == TYPE_CHECK_BUTTON ?

CHECK_BUTTON : RADIO_BUTTON);

if (selBorder != NULL) {

selColor = selBorder->bgColorPtr;

}

x -= butPtr->indicatorSpace/2;

y = Tk_Height(tkwin)/2;

TkpDrawCheckIndicator(tkwin, butPtr->display, pixmap, x, y,

border, butPtr->normalFg, selColor, butPtr->disabledFg,

((butPtr->flags & SELECTED) ? 1 :

(butPtr->flags & TRISTATED) ? 2 : 0),

(butPtr->state == STATE_DISABLED), btype);

}

* 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 so the stippling is the right color.

if ((butPtr->state == STATE_DISABLED)

&& ((butPtr->disabledFg == NULL) || (butPtr->image != NULL))) {

if ((butPtr->flags & SELECTED) && !butPtr->indicatorOn

&& (butPtr->selectBorder != NULL)) {

XSetForeground(butPtr->display, butPtr->stippleGC,

Tk_3DBorderColor(butPtr->selectBorder)->pixel);

}

* Stipple the whole button if no disabledFg was specified, otherwise

* restrict stippling only to displayed image

if (butPtr->disabledFg == NULL) {

XFillRectangle(butPtr->display, pixmap, butPtr->stippleGC, 0, 0,

(unsigned) Tk_Width(tkwin), (unsigned) Tk_Height(tkwin));

} else {

XFillRectangle(butPtr->display, pixmap, butPtr->stippleGC,

imageXOffset, imageYOffset,

(unsigned) imageWidth, (unsigned) imageHeight);

}

if ((butPtr->flags & SELECTED) && !butPtr->indicatorOn

&& (butPtr->selectBorder != NULL)) {

XSetForeground(butPtr->display, butPtr->stippleGC,

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 = highlightWidth;

if (butPtr->defaultState == DEFAULT_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 == DEFAULT_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,

borderWidth, relief);

}

if (highlightWidth > 0) {

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 == DEFAULT_NORMAL) {

TkDrawInsetFocusHighlight(tkwin, gc, highlightWidth,

pixmap, 5);

} else {

Tk_DrawFocusHighlight(tkwin, gc, 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 function 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(

TkButton *butPtr) /* Button whose geometry may have changed. */

{

int width, height, avgWidth, txtWidth, txtHeight;

int haveImage = 0, haveText = 0;

Tk_FontMetrics fm;

int padX, padY, borderWidth, highlightWidth, wrapLength;

int butPtrWidth, butPtrHeight;

Tk_GetPixelsFromObj(NULL, butPtr->tkwin, butPtr->highlightWidthObj, &highlightWidth);

Tk_GetPixelsFromObj(NULL, butPtr->tkwin, butPtr->borderWidthObj, &borderWidth);

Tk_GetPixelsFromObj(NULL, butPtr->tkwin, butPtr->padXObj, &padX);

Tk_GetPixelsFromObj(NULL, butPtr->tkwin, butPtr->padYObj, &padY);

Tk_GetPixelsFromObj(NULL, butPtr->tkwin, butPtr->wrapLengthObj, &wrapLength);

Tk_GetPixelsFromObj(NULL, butPtr->tkwin, butPtr->widthObj, &butPtrWidth);

Tk_GetPixelsFromObj(NULL, butPtr->tkwin, butPtr->heightObj, &butPtrHeight);

butPtr->inset = highlightWidth + borderWidth;

* Leave room for the default ring if needed.

if (butPtr->defaultState != DEFAULT_DISABLED) {

butPtr->inset += 5;

}

butPtr->indicatorSpace = 0;

width = 0;

height = 0;

txtWidth = 0;

txtHeight = 0;

avgWidth = 0;

if (butPtr->image != NULL) {

Tk_SizeOfImage(butPtr->image, &width, &height);

haveImage = 1;

} else if (butPtr->bitmap != None) {

Tk_SizeOfBitmap(butPtr->display, butPtr->bitmap, &width, &height);

haveImage = 1;

}

if (haveImage == 0 || butPtr->compound != COMPOUND_NONE) {

Tk_FreeTextLayout(butPtr->textLayout);

butPtr->textLayout = Tk_ComputeTextLayout(butPtr->tkfont,

Tcl_GetString(butPtr->textPtr), TCL_INDEX_NONE, wrapLength,

butPtr->justify, 0, &butPtr->textWidth, &butPtr->textHeight);

txtWidth = butPtr->textWidth;

txtHeight = butPtr->textHeight;

avgWidth = Tk_TextWidth(butPtr->tkfont, "0", 1);

Tk_GetFontMetrics(butPtr->tkfont, &fm);

haveText = (txtWidth != 0 && txtHeight != 0);

}

* If the button is compound (i.e., it shows both an image and text), the

* new geometry is a combination of the image and text geometry. We only

* honor the compound bit if the button has both text and an image,

* because otherwise it is not really a compound button.

if (butPtr->compound != COMPOUND_NONE && haveImage && haveText) {

switch ((enum compound) butPtr->compound) {

case COMPOUND_TOP:

case COMPOUND_BOTTOM:

* Image is above or below text.

height += txtHeight + padY;

width = (width > txtWidth ? width : txtWidth);

break;

case COMPOUND_LEFT:

case COMPOUND_RIGHT:

* Image is left or right of text.

width += txtWidth + padX;

height = (height > txtHeight ? height : txtHeight);

break;

case COMPOUND_CENTER:

* Image and text are superimposed.

width = (width > txtWidth ? width : txtWidth);

height = (height > txtHeight ? height : txtHeight);

break;

case COMPOUND_NONE:

break;

}

if (butPtrWidth > 0) {

width = butPtrWidth;

}

if (butPtrHeight > 0) {

height = butPtrHeight;

}

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;

}

width += 2 * padX;

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