/*
* tkWinButton.c --
*
* This file implements the Windows specific portion of the button
* widgets.
*
* Copyright (c) 1996-1998 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: tkWinButton.c,v 1.20.2.3 2003/10/10 00:03:57 hobbs Exp $
*/
#define OEMRESOURCE
#include "tkWinInt.h"
#include "tkButton.h"
/*
* These macros define the base style flags for the different button types.
*/
#define LABEL_STYLE (BS_OWNERDRAW | WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS)
#define PUSH_STYLE (BS_OWNERDRAW | BS_PUSHBUTTON | WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS)
#define CHECK_STYLE (BS_OWNERDRAW | BS_CHECKBOX | WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS)
#define RADIO_STYLE (BS_OWNERDRAW | BS_RADIOBUTTON | WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS)
/*
* Declaration of Windows specific button structure.
*/
typedef struct WinButton {
TkButton info; /* Generic button info. */
WNDPROC oldProc; /* Old window procedure. */
HWND hwnd; /* Current window handle. */
Pixmap pixmap; /* Bitmap for rendering the button. */
DWORD style; /* Window style flags. */
} WinButton;
/*
* The following macro reverses the order of RGB bytes to convert
* between RGBQUAD and COLORREF values.
*/
#define FlipColor(rgb) (RGB(GetBValue(rgb),GetGValue(rgb),GetRValue(rgb)))
/*
* The following enumeration defines the meaning of the palette entries
* in the "buttons" image used to draw checkbox and radiobutton indicators.
*/
enum {
PAL_CHECK = 0,
PAL_TOP_OUTER = 1,
PAL_BOTTOM_OUTER = 2,
PAL_BOTTOM_INNER = 3,
PAL_INTERIOR = 4,
PAL_TOP_INNER = 5,
PAL_BACKGROUND = 6
};
/*
* Cached information about the boxes bitmap, and the default border
* width for a button in string form for use in Tk_OptionSpec for
* the various button widget classes.
*/
typedef struct ThreadSpecificData {
BITMAPINFOHEADER *boxesPtr; /* Information about the bitmap. */
DWORD *boxesPalette; /* Pointer to color palette. */
LPSTR boxesBits; /* Pointer to bitmap data. */
DWORD boxHeight; /* Height of each sub-image. */
DWORD boxWidth ; /* Width of each sub-image. */
char defWidth[TCL_INTEGER_SPACE];
} ThreadSpecificData;
static Tcl_ThreadDataKey dataKey;
/*
* Declarations for functions defined in this file.
*/
static LRESULT CALLBACK ButtonProc _ANSI_ARGS_((HWND hwnd, UINT message,
WPARAM wParam, LPARAM lParam));
static Window CreateProc _ANSI_ARGS_((Tk_Window tkwin,
Window parent, ClientData instanceData));
static void InitBoxes _ANSI_ARGS_((void));
/*
* The class procedure table for the button widgets.
*/
Tk_ClassProcs tkpButtonProcs = {
sizeof(Tk_ClassProcs), /* size */
TkButtonWorldChanged, /* worldChangedProc */
CreateProc, /* createProc */
};
/*
*----------------------------------------------------------------------
*
* InitBoxes --
*
* This function load the Tk 3d button bitmap. "buttons" is a 16
* color bitmap that is laid out such that the top row contains
* the 4 checkbox images, and the bottom row contains the radio
* button images. Note that the bitmap is stored in bottom-up
* format. Also, the first seven palette entries are used to
* identify the different parts of the bitmaps so we can do the
* appropriate color mappings based on the current button colors.
*
* Results:
* None.
*
* Side effects:
* Loads the "buttons" resource.
*
*----------------------------------------------------------------------
*/
static void
InitBoxes()
{
/*
* For DLLs like Tk, the HINSTANCE is the same as the HMODULE.
*/
HMODULE module = (HINSTANCE) Tk_GetHINSTANCE();
HRSRC hrsrc;
HGLOBAL hblk;
LPBITMAPINFOHEADER newBitmap;
DWORD size;
ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
hrsrc = FindResource(module, "buttons", RT_BITMAP);
if (hrsrc) {
hblk = LoadResource(module, hrsrc);
tsdPtr->boxesPtr = (LPBITMAPINFOHEADER)LockResource(hblk);
}
/*
* Copy the DIBitmap into writable memory.
*/
if (tsdPtr->boxesPtr != NULL && !(tsdPtr->boxesPtr->biWidth % 4)
&& !(tsdPtr->boxesPtr->biHeight % 2)) {
size = tsdPtr->boxesPtr->biSize + (1 << tsdPtr->boxesPtr->biBitCount)
* sizeof(RGBQUAD) + tsdPtr->boxesPtr->biSizeImage;
newBitmap = (LPBITMAPINFOHEADER) ckalloc(size);
memcpy(newBitmap, tsdPtr->boxesPtr, size);
tsdPtr->boxesPtr = newBitmap;
tsdPtr->boxWidth = tsdPtr->boxesPtr->biWidth / 4;
tsdPtr->boxHeight = tsdPtr->boxesPtr->biHeight / 2;
tsdPtr->boxesPalette = (DWORD*) (((LPSTR) tsdPtr->boxesPtr)
+ tsdPtr->boxesPtr->biSize);
tsdPtr->boxesBits = ((LPSTR) tsdPtr->boxesPalette)
+ ((1 << tsdPtr->boxesPtr->biBitCount) * sizeof(RGBQUAD));
} else {
tsdPtr->boxesPtr = NULL;
}
}
/*
*----------------------------------------------------------------------
*
* TkpButtonSetDefaults --
*
* This procedure is invoked before option tables are created for
* buttons. It modifies some of the default values to match the
* current values defined for this platform.
*
* Results:
* Some of the default values in *specPtr are modified.
*
* Side effects:
* Updates some of.
*
*----------------------------------------------------------------------
*/
void
TkpButtonSetDefaults(specPtr)
Tk_OptionSpec *specPtr; /* Points to an array of option specs,
* terminated by one with type
* TK_OPTION_END. */
{
int width;
ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
if (tsdPtr->defWidth[0] == 0) {
width = GetSystemMetrics(SM_CXEDGE);
if (width == 0) {
width = 1;
}
sprintf(tsdPtr->defWidth, "%d", width);
}
for ( ; specPtr->type != TK_OPTION_END; specPtr++) {
if (specPtr->internalOffset == Tk_Offset(TkButton, borderWidth)) {
specPtr->defValue = tsdPtr->defWidth;
}
}
}
/*
*----------------------------------------------------------------------
*
* 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;
{
WinButton *butPtr;
butPtr = (WinButton *)ckalloc(sizeof(WinButton));
butPtr->hwnd = NULL;
return (TkButton *) butPtr;
}
/*
*----------------------------------------------------------------------
*
* CreateProc --
*
* This function creates a new Button control, subclasses
* the instance, and generates a new Window object.
*
* Results:
* Returns the newly allocated Window object, or None on failure.
*
* Side effects:
* Causes a new Button control to come into existence.
*
*----------------------------------------------------------------------
*/
static Window
CreateProc(tkwin, parentWin, instanceData)
Tk_Window tkwin; /* Token for window. */
Window parentWin; /* Parent of new window. */
ClientData instanceData; /* Button instance data. */
{
Window window;
HWND parent;
char *class;
WinButton *butPtr = (WinButton *)instanceData;
parent = Tk_GetHWND(parentWin);
if (butPtr->info.type == TYPE_LABEL) {
class = "STATIC";
butPtr->style = SS_OWNERDRAW | WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS;
} else {
class = "BUTTON";
butPtr->style = BS_OWNERDRAW | WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS;
}
butPtr->hwnd = CreateWindow(class, NULL, butPtr->style,
Tk_X(tkwin), Tk_Y(tkwin), Tk_Width(tkwin), Tk_Height(tkwin),
parent, NULL, Tk_GetHINSTANCE(), NULL);
SetWindowPos(butPtr->hwnd, HWND_TOP, 0, 0, 0, 0,
SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOSIZE);
#ifdef _WIN64
butPtr->oldProc = (WNDPROC)SetWindowLongPtr(butPtr->hwnd, GWLP_WNDPROC,
(LONG_PTR) ButtonProc);
#else
butPtr->oldProc = (WNDPROC)SetWindowLong(butPtr->hwnd, GWL_WNDPROC,
(DWORD) ButtonProc);
#endif
window = Tk_AttachHWND(tkwin, butPtr->hwnd);
return window;
}
/*
*----------------------------------------------------------------------
*
* TkpDestroyButton --
*
* Free data structures associated with the button control.
*
* Results:
* None.
*
* Side effects:
* Restores the default control state.
*
*----------------------------------------------------------------------
*/
void
TkpDestroyButton(butPtr)
TkButton *butPtr;
{
WinButton *winButPtr = (WinButton *)butPtr;
HWND hwnd = winButPtr->hwnd;
if (hwnd) {
#ifdef _WIN64
SetWindowLongPtr(hwnd, GWLP_WNDPROC, (LONG_PTR) winButPtr->oldProc);
#else
SetWindowLong(hwnd, GWL_WNDPROC, (DWORD) winButPtr->oldProc);
#endif
}
}
/*
*----------------------------------------------------------------------
*
* TkpDisplayButton --
*
* This procedure is invoked to display a button widget. It is
* normally invoked as an idle handler.
*
* Results:
* None.
*
* Side effects:
* Information appears on the screen. The REDRAW_PENDING flag
* is cleared.
*
*----------------------------------------------------------------------
*/
void
TkpDisplayButton(clientData)
ClientData clientData; /* Information about widget. */
{
TkWinDCState state;
HDC dc;
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, haveImage = 0, haveText = 0, drawRing = 0;
RECT rect;
int defaultWidth; /* Width of default ring. */
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. */
int textXOffset = 0, textYOffset = 0; /* text offsets for use with
* compound buttons and focus ring */
int imageWidth, imageHeight;
int imageXOffset = 0, imageYOffset = 0; /* image information that will
* be used to restrict disabled
* pixmap as well */
DWORD *boxesPalette;
ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
boxesPalette= tsdPtr->boxesPalette;
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->state != 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. 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;
}
}
/*
* Compute width of default ring and offset for pushed buttons.
*/
if (butPtr->type == TYPE_BUTTON) {
defaultWidth = ((butPtr->defaultState == DEFAULT_ACTIVE)
? butPtr->highlightWidth : 0);
offset = 1;
} else {
defaultWidth = 0;
if ((butPtr->type >= TYPE_CHECK_BUTTON) && !butPtr->indicatorOn) {
offset = 1;
} else {
offset = 0;
}
}
/*
* 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);
haveImage = 1;
} else if (butPtr->bitmap != None) {
Tk_SizeOfBitmap(butPtr->display, butPtr->bitmap, &width, &height);
haveImage = 1;
}
imageWidth = width;
imageHeight = height;
haveText = (butPtr->textWidth != 0 && butPtr->textHeight != 0);
if (butPtr->compound != COMPOUND_NONE && haveImage && haveText) {
int 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 + butPtr->padY;
} else {
imageYOffset = butPtr->textHeight + butPtr->padY;
}
fullHeight = height + butPtr->textHeight + butPtr->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 + butPtr->padX;
} else {
imageXOffset = butPtr->textWidth + butPtr->padX;
}
fullWidth = butPtr->textWidth + butPtr->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, butPtr->padX, butPtr->padY,
butPtr->indicatorSpace + fullWidth, fullHeight, &x, &y);
x += butPtr->indicatorSpace;
if (relief == TK_RELIEF_SUNKEN) {
x += offset;
y += offset;
}
imageXOffset += x;
imageYOffset += y;
if (butPtr->image != NULL) {
if ((butPtr->selectImage != NULL) && (butPtr->flags & SELECTED)) {
Tk_RedrawImage(butPtr->selectImage, 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);
height = fullHeight;
drawRing = 1;
} else {
if (haveImage) {
TkComputeAnchor(butPtr->anchor, tkwin, 0, 0,
butPtr->indicatorSpace + width, height, &x, &y);
x += butPtr->indicatorSpace;
if (relief == TK_RELIEF_SUNKEN) {
x += offset;
y += offset;
}
imageXOffset += x;
imageYOffset += y;
if (butPtr->image != NULL) {
if ((butPtr->selectImage != NULL) &&
(butPtr->flags & SELECTED)) {
Tk_RedrawImage(butPtr->selectImage, 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);
}
} else {
TkComputeAnchor(butPtr->anchor, tkwin, butPtr->padX, butPtr->padY,
butPtr->indicatorSpace + butPtr->textWidth,
butPtr->textHeight, &x, &y);
x += butPtr->indicatorSpace;
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);
height = butPtr->textHeight;
drawRing = 1;
}
}
/*
* Draw the focus ring. If this is a push button then we need to
* put it around the inner edge of the border, otherwise we put it
* around the text. The text offsets are only non-zero when this
* is a compound button.
*/
if (drawRing && butPtr->flags & GOT_FOCUS && butPtr->type != TYPE_LABEL) {
dc = TkWinGetDrawableDC(butPtr->display, pixmap, &state);
if (butPtr->type == TYPE_BUTTON || !butPtr->indicatorOn) {
rect.top = butPtr->borderWidth + 1 + defaultWidth;
rect.left = rect.top;
rect.right = Tk_Width(tkwin) - rect.left;
rect.bottom = Tk_Height(tkwin) - rect.top;
} else {
rect.top = y-1 + textYOffset;
rect.left = x-1 + textXOffset;
rect.right = x+butPtr->textWidth + 1 + textXOffset;
rect.bottom = y+butPtr->textHeight + 2 + textYOffset;
}
SetTextColor(dc, gc->foreground);
SetBkColor(dc, gc->background);
DrawFocusRect(dc, &rect);
TkWinReleaseDrawableDC(pixmap, dc, &state);
}
y += height/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
&& tsdPtr->boxesPtr) {
int xSrc, ySrc;
x -= butPtr->indicatorSpace;
y -= butPtr->indicatorDiameter / 2;
xSrc = (butPtr->flags & SELECTED) ? tsdPtr->boxWidth : 0;
if (butPtr->state == STATE_ACTIVE) {
xSrc += tsdPtr->boxWidth*2;
}
ySrc = (butPtr->type == TYPE_RADIO_BUTTON) ? 0 : tsdPtr->boxHeight;
/*
* Update the palette in the boxes bitmap to reflect the current
* button colors. Note that this code relies on the layout of the
* bitmap's palette. Also, all of the colors used to draw the
* bitmap must be in the palette that is selected into the DC of
* the offscreen pixmap. This requires that the static colors
* be placed into the palette.
*/
if ((butPtr->state == STATE_DISABLED)
&& (butPtr->disabledFg == NULL)) {
boxesPalette[PAL_CHECK] = FlipColor(TkWinGetBorderPixels(tkwin,
border, TK_3D_DARK_GC));
} else {
boxesPalette[PAL_CHECK] = FlipColor(gc->foreground);
}
boxesPalette[PAL_TOP_OUTER] = FlipColor(TkWinGetBorderPixels(tkwin,
border, TK_3D_DARK_GC));
boxesPalette[PAL_TOP_INNER] = FlipColor(TkWinGetBorderPixels(tkwin,
border, TK_3D_DARK2));
boxesPalette[PAL_BOTTOM_INNER] = FlipColor(TkWinGetBorderPixels(tkwin,
border, TK_3D_LIGHT2));
boxesPalette[PAL_BOTTOM_OUTER] = FlipColor(TkWinGetBorderPixels(tkwin,
border, TK_3D_LIGHT_GC));
if (butPtr->state == STATE_DISABLED) {
boxesPalette[PAL_INTERIOR] = FlipColor(TkWinGetBorderPixels(tkwin,
border, TK_3D_LIGHT2));
} else if (butPtr->selectBorder != NULL) {
boxesPalette[PAL_INTERIOR] = FlipColor(TkWinGetBorderPixels(tkwin,
butPtr->selectBorder, TK_3D_FLAT_GC));
} else {
boxesPalette[PAL_INTERIOR] = FlipColor(GetSysColor(COLOR_WINDOW));
}
boxesPalette[PAL_BACKGROUND] = FlipColor(TkWinGetBorderPixels(tkwin,
border, TK_3D_FLAT_GC));
dc = TkWinGetDrawableDC(butPtr->display, pixmap, &state);
StretchDIBits(dc, x, y, tsdPtr->boxWidth, tsdPtr->boxHeight,
xSrc, ySrc, tsdPtr->boxWidth, tsdPtr->boxHeight,
tsdPtr->boxesBits, (LPBITMAPINFO) tsdPtr->boxesPtr,
DIB_RGB_COLORS, SRCCOPY);
TkWinReleaseDrawableDC(pixmap, dc, &state);
}
/*
* 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.
*/
if (relief != TK_RELIEF_FLAT) {
Tk_Draw3DRectangle(tkwin, pixmap, border,
defaultWidth, defaultWidth,
Tk_Width(tkwin) - 2*defaultWidth,
Tk_Height(tkwin) - 2*defaultWidth,
butPtr->borderWidth, relief);
}
if (defaultWidth != 0) {
dc = TkWinGetDrawableDC(butPtr->display, pixmap, &state);
TkWinFillRect(dc, 0, 0, Tk_Width(tkwin), defaultWidth,
butPtr->highlightColorPtr->pixel);
TkWinFillRect(dc, 0, 0, defaultWidth, Tk_Height(tkwin),
butPtr->highlightColorPtr->pixel);
TkWinFillRect(dc, 0, Tk_Height(tkwin) - defaultWidth,
Tk_Width(tkwin), defaultWidth,
butPtr->highlightColorPtr->pixel);
TkWinFillRect(dc, Tk_Width(tkwin) - defaultWidth, 0,
defaultWidth, Tk_Height(tkwin),
butPtr->highlightColorPtr->pixel);
TkWinReleaseDrawableDC(pixmap, dc, &state);
}
if (butPtr->flags & GOT_FOCUS) {
Tk_SetCaretPos(tkwin, x, y, 0 /* not used */);
}
/*
* 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 txtWidth, txtHeight; /* Width and height of text */
int imgWidth, imgHeight; /* Width and height of image */
int width = 0, height = 0; /* Width and height of button */
int haveImage, haveText;
int avgWidth;
int minWidth;
/* Vertical and horizontal dialog units size in pixels. */
double vDLU, hDLU;
Tk_FontMetrics fm;
ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
if (butPtr->highlightWidth < 0) {
butPtr->highlightWidth = 0;
}
butPtr->inset = butPtr->highlightWidth + butPtr->borderWidth;
butPtr->indicatorSpace = 0;
if (!tsdPtr->boxesPtr) {
InitBoxes();
}
/* Figure out image metrics */
if (butPtr->image != NULL) {
Tk_SizeOfImage(butPtr->image, &imgWidth, &imgHeight);
haveImage = 1;
} else if (butPtr->bitmap != None) {
Tk_SizeOfBitmap(butPtr->display, butPtr->bitmap,
&imgWidth, &imgHeight);
haveImage = 1;
} else {
imgWidth = 0;
imgHeight = 0;
haveImage = 0;
}
/*
* Figure out font metrics (even if we don't have text because we need
* DLUs (based on font, not text) for some spacing calculations below).
*/
Tk_FreeTextLayout(butPtr->textLayout);
butPtr->textLayout = Tk_ComputeTextLayout(butPtr->tkfont,
Tcl_GetString(butPtr->textPtr), -1, butPtr->wrapLength,
butPtr->justify, 0, &butPtr->textWidth, &butPtr->textHeight);
txtWidth = butPtr->textWidth;
txtHeight = butPtr->textHeight;
haveText = (*(Tcl_GetString(butPtr->textPtr)) != '\0');
avgWidth = (Tk_TextWidth(butPtr->tkfont,
"abcdefghijklmnopqurstuvwzyABCDEFGHIJKLMNOPQURSTUVWZY",
52) + 26) / 52;
Tk_GetFontMetrics(butPtr->tkfont, &fm);
/* Compute dialog units for layout calculations. */
hDLU = avgWidth / 4.0;
vDLU = fm.linespace / 8.0;
/*
* First, let's try to compute button size "by the book" (See "Microsoft
* Windows User Experience" (ISBN 0-7356-0566-1), Chapter 14 - Visual
* Design, Section 4 - Layout (page 448)).
*
* Note, that Tk "buttons" are Microsoft "Command buttons", Tk
* "checkbuttons" are Microsoft "check boxes", Tk "radiobuttons" are
* Microsoft "option buttons", and Tk "labels" are Microsoft "text
* labels".
*/
/*
* Set width and height by button type; See User Experience table, p449.
* These are text-based measurements, even if the text is "".
* If there is an image, height will get set again later.
*/
switch (butPtr->type) {
case TYPE_BUTTON: {
/*
* First compute the minimum width of the button in
* characters. MWUE says that the button should be
* 50 DLUs. We allow 6 DLUs padding left and right.
* (There is no rule but this is consistent with the
* fact that button text is 8 DLUs high and buttons
* are 14 DLUs high.)
*
* The width is specified in characters. A character
* is, by definition, 4 DLUs wide. 11 char * 4 DLU
* is 44 DLU + 6 DLU padding = 50 DLU. Therefore,
* width = -11 -> MWUE compliant buttons.
*/
if (butPtr->width < 0) {
/* Min width in characters */
minWidth = -(butPtr->width);
/* Allow for characters */
width = avgWidth * minWidth;
/* Add for padding */
width += (int)(0.5 + (6 * hDLU));
}
/*
* If shrink-wrapping was requested (width = 0) or
* if the text is wider than the default button width,
* adjust the button width up to suit.
*/
if (butPtr->width == 0
|| (txtWidth + (int)(0.5 + (6 * hDLU)) > width)) {
width = txtWidth + (int)(0.5 + (6 * hDLU));
}
/*
* The User Experience says 14 DLUs. Since text is, by
* definition, 8 DLU/line, this allows for multi-line text
* while working perfectly for single-line text.
*/
height = txtHeight + (int)(0.5 + (6 * vDLU));
/*
* The above includes 6 DLUs of padding which should include
* defaults of 1 pixel of highlightwidth, 2 pixels of
* borderwidth, 1 pixel of padding and 1 pixel of extra inset
* on each side. Those will be added later so reduce width
* and height now to compensate.
*/
width -= 10;
height -= 10;
if (!haveImage) {
/*
* Extra inset for the focus ring.
*/
butPtr->inset += 1;
}
break;
}
case TYPE_LABEL: {
/*
* The User Experience says, "as wide as needed".
*/
width = txtWidth;
/*
* The User Experience says, "8 (DLUs) per line of text."
* Since text is, by definition, 8 DLU/line, this allows
* for multi-line text while working perfectly for single-line
* text.
*/
if (txtHeight) {
height = txtHeight;
} else {
/*
* If there's no text, we want the height to be one linespace.
*/
height = fm.linespace;
}
break;
}
case TYPE_RADIO_BUTTON:
case TYPE_CHECK_BUTTON: {
/* See note for TYPE_LABEL */
width = txtWidth;
/*
* The User Experience says 10 DLUs. (Is that one DLU above
* and below for the focus ring?) See note above about
* multi-line text and 8 DLU/line.
*/
height = txtHeight + (int)(0.5 + (2.0 * vDLU));
/*
* The above includes 2 DLUs of padding which should include
* defaults of 1 pixel of highlightwidth, 0 pixels of
* borderwidth, and 1 pixel of padding on each side. Those
* will be added later so reduce height now to compensate.
*/
height -= 4;
/*
* Extra inset for the focus ring.
*/
butPtr->inset += 1;
break;
}
}/* switch */
/*
* At this point, the width and height are correct for a Tk text
* button, excluding padding and inset, but we have to allow for
* compound buttons. The image may be above, below, left, or right
* of the text.
*/
/*
* 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 */
if (imgWidth > width) {
width = imgWidth;
}
height += imgHeight + butPtr->padY;
break;
}
case COMPOUND_LEFT:
case COMPOUND_RIGHT: {
/* Image is left or right of text */
/*
* Only increase width of button if image doesn't fit in
* slack space of default button width
*/
if ((imgWidth + txtWidth + butPtr->padX) > width) {
width = imgWidth + txtWidth + butPtr->padX;
}
if (imgHeight > height) {
height = imgHeight;
}
break;
}
case COMPOUND_CENTER: {
/* Image and text are superimposed */
if (imgWidth > width) {
width = imgWidth;
}
if (imgHeight > height) {
height = imgHeight;
}
break;
}
} /* switch */
/* Fix up for minimum width */
if (butPtr->width < 0) {
/* minWidth in pixels (because there's an image */
minWidth = -(butPtr->width);
if (width < minWidth) {
width = minWidth;
}
} else if (butPtr->width > 0) {
width = butPtr->width;
}
if (butPtr->height > 0) {
height = butPtr->height;
}
width += 2*butPtr->padX;
height += 2*butPtr->padY;
} else if (haveImage) {
if (butPtr->width > 0) {
width = butPtr->width;
} else {
width = imgWidth;
}
if (butPtr->height > 0) {
height = butPtr->height;
} else {
height = imgHeight;
}
} else {
/* No image. May or may not be text. May or may not be compound. */
/*
* butPtr->width is in characters. We need to allow for that
* many characters on the face, not in the over-all button width
*/
if (butPtr->width > 0) {
width = butPtr->width * avgWidth;
}
/*
* butPtr->height is in lines of text. We need to allow for
* that many lines on the face, not in the over-all button
* height.
*/
if (butPtr->height > 0) {
height = butPtr->height * fm.linespace;
/*
* Make the same adjustments as above to get same height for
* e.g. a one line text with -height 0 or 1. [Bug #565485]
*/
switch (butPtr->type) {
case TYPE_BUTTON: {
height += (int)(0.5 + (6 * vDLU)) - 10;
break;
}
case TYPE_RADIO_BUTTON:
case TYPE_CHECK_BUTTON: {
height += (int)(0.5 + (2.0 * vDLU)) - 4;
break;
}
}
}
width += 2 * butPtr->padX;
height += 2 * butPtr->padY;
}
/* Fix up width and height for indicator sizing and spacing */
if (butPtr->type == TYPE_RADIO_BUTTON
|| butPtr->type == TYPE_CHECK_BUTTON) {
if (butPtr->indicatorOn) {
butPtr->indicatorDiameter = tsdPtr->boxHeight;
/*
* Make sure we can see the whole indicator, even if the text
* or image is very small.
*/
if (height < butPtr->indicatorDiameter) {
height = butPtr->indicatorDiameter;
}
/*
* There is no rule for space between the indicator and
* the text (the two are atomic on 'Windows) but the User
* Experience page 451 says leave 3 hDLUs between "text
* labels and their associated controls".
*/
butPtr->indicatorSpace = butPtr->indicatorDiameter +
(int)(0.5 + (3.0 * hDLU));
width += butPtr->indicatorSpace;
}
}
/*
* Inset is always added to the size.
*/
width += 2 * butPtr->inset;
height += 2 * butPtr->inset;
Tk_GeometryRequest(butPtr->tkwin, width, height);
Tk_SetInternalBorder(butPtr->tkwin, butPtr->inset);
}
/*
*----------------------------------------------------------------------
*
* ButtonProc --
*
* This function is call by Windows whenever an event occurs on
* a button control created by Tk.
*
* Results:
* Standard Windows return value.
*
* Side effects:
* May generate events.
*
*----------------------------------------------------------------------
*/
static LRESULT CALLBACK
ButtonProc(hwnd, message, wParam, lParam)
HWND hwnd;
UINT message;
WPARAM wParam;
LPARAM lParam;
{
LRESULT result;
WinButton *butPtr;
Tk_Window tkwin = Tk_HWNDToWindow(hwnd);
if (tkwin == NULL) {
panic("ButtonProc called on an invalid HWND");
}
butPtr = (WinButton *)((TkWindow*)tkwin)->instanceData;
switch(message) {
case WM_ERASEBKGND:
return 0;
case BM_GETCHECK:
if (((butPtr->info.type == TYPE_CHECK_BUTTON)
|| (butPtr->info.type == TYPE_RADIO_BUTTON))
&& butPtr->info.indicatorOn) {
return (butPtr->info.flags & SELECTED)
? BST_CHECKED : BST_UNCHECKED;
}
return 0;
case BM_GETSTATE: {
DWORD state = 0;
if (((butPtr->info.type == TYPE_CHECK_BUTTON)
|| (butPtr->info.type == TYPE_RADIO_BUTTON))
&& butPtr->info.indicatorOn) {
state = (butPtr->info.flags & SELECTED)
? BST_CHECKED : BST_UNCHECKED;
}
if (butPtr->info.flags & GOT_FOCUS) {
state |= BST_FOCUS;
}
return state;
}
case WM_ENABLE:
break;
case WM_PAINT: {
PAINTSTRUCT ps;
BeginPaint(hwnd, &ps);
EndPaint(hwnd, &ps);
TkpDisplayButton((ClientData)butPtr);
/*
* Special note: must cancel any existing idle handler
* for TkpDisplayButton; it's no longer needed, and
* TkpDisplayButton cleared the REDRAW_PENDING flag.
*/
Tcl_CancelIdleCall(TkpDisplayButton, (ClientData)butPtr);
return 0;
}
case BN_CLICKED: {
int code;
Tcl_Interp *interp = butPtr->info.interp;
if (butPtr->info.state != STATE_DISABLED) {
Tcl_Preserve((ClientData)interp);
code = TkInvokeButton((TkButton*)butPtr);
if (code != TCL_OK && code != TCL_CONTINUE
&& code != TCL_BREAK) {
Tcl_AddErrorInfo(interp, "\n (button invoke)");
Tcl_BackgroundError(interp);
}
Tcl_Release((ClientData)interp);
}
Tcl_ServiceAll();
return 0;
}
default:
if (Tk_TranslateWinEvent(hwnd, message, wParam, lParam, &result)) {
return result;
}
}
return DefWindowProc(hwnd, message, wParam, lParam);
}