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- /*
- * tkWinButton.c --
- *
- * This file implements the Windows 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: @(#) tkWinButton.c 1.11 97/06/18 15:45:07
- */
-
- #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)
-
- static DWORD buttonStyles[] = {
- LABEL_STYLE, PUSH_STYLE, CHECK_STYLE, RADIO_STYLE
- };
-
- /*
- * 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
- };
-
- /*
- * Set to non-zero if this module is initialized.
- */
-
- static int initialized = 0;
-
- /*
- * Variables for the cached information about the boxes bitmap.
- */
-
- static BITMAPINFOHEADER *boxesPtr = NULL; /* Information about the bitmap. */
- static DWORD *boxesPalette = NULL; /* Pointer to color palette. */
- static LPSTR boxesBits = NULL; /* Pointer to bitmap data. */
- static DWORD boxHeight = 0, boxWidth = 0; /* Size of each sub-image. */
-
- /*
- * This variable holds the default border width for a button in string
- * form for use in a Tk_ConfigSpec.
- */
-
- static char defWidth[8];
-
- /*
- * Declarations for functions defined in this file.
- */
-
- static int ButtonBindProc _ANSI_ARGS_((ClientData clientData,
- Tcl_Interp *interp, XEvent *eventPtr,
- Tk_Window tkwin, KeySym keySym));
- static LRESULT CALLBACK ButtonProc _ANSI_ARGS_((HWND hwnd, UINT message,
- WPARAM wParam, LPARAM lParam));
- static DWORD ComputeStyle _ANSI_ARGS_((WinButton* butPtr));
- static Window CreateProc _ANSI_ARGS_((Tk_Window tkwin,
- Window parent, ClientData instanceData));
- static void InitBoxes _ANSI_ARGS_((void));
- static void UpdateButtonDefaults _ANSI_ARGS_((void));
-
- /*
- * The class procedure table for the button widgets.
- */
-
- TkClassProcs tkpButtonProcs = {
- CreateProc, /* createProc. */
- TkButtonWorldChanged, /* geometryProc. */
- NULL /* modalProc. */
- };
-
-
- /*
- *----------------------------------------------------------------------
- *
- * 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()
- {
- HMODULE module = TkWinGetTkModule();
- HRSRC hrsrc;
- HGLOBAL hblk;
- LPBITMAPINFOHEADER newBitmap;
- DWORD size;
-
- hrsrc = FindResource(module, "buttons", RT_BITMAP);
- if (hrsrc) {
- hblk = LoadResource(module, hrsrc);
- boxesPtr = (LPBITMAPINFOHEADER)LockResource(hblk);
- }
-
- /*
- * Copy the DIBitmap into writable memory.
- */
-
- if (boxesPtr != NULL && !(boxesPtr->biWidth % 4)
- && !(boxesPtr->biHeight % 2)) {
- size = boxesPtr->biSize + (1 << boxesPtr->biBitCount) * sizeof(RGBQUAD)
- + boxesPtr->biSizeImage;
- newBitmap = (LPBITMAPINFOHEADER) ckalloc(size);
- memcpy(newBitmap, boxesPtr, size);
- boxesPtr = newBitmap;
- boxWidth = boxesPtr->biWidth / 4;
- boxHeight = boxesPtr->biHeight / 2;
- boxesPalette = (DWORD*) (((LPSTR)boxesPtr) + boxesPtr->biSize);
- boxesBits = ((LPSTR)boxesPalette)
- + ((1 << boxesPtr->biBitCount) * sizeof(RGBQUAD));
- } else {
- boxesPtr = NULL;
- }
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * UpdateButtonDefaults --
- *
- * This function retrieves the current system defaults for
- * the button widgets.
- *
- * Results:
- * None.
- *
- * Side effects:
- * Updates the configuration defaults for buttons.
- *
- *----------------------------------------------------------------------
- */
-
- void
- UpdateButtonDefaults()
- {
- Tk_ConfigSpec *specPtr;
- int width = GetSystemMetrics(SM_CXEDGE);
-
- if (width == 0) {
- width = 1;
- }
- sprintf(defWidth, "%d", width);
- for (specPtr = tkpButtonConfigSpecs; specPtr->type != TK_CONFIG_END;
- specPtr++) {
- if (specPtr->offset == Tk_Offset(TkButton, borderWidth)) {
- specPtr->defValue = 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;
-
- if (!initialized) {
- UpdateButtonDefaults();
- initialized = 1;
- }
-
- 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);
- butPtr->oldProc = (WNDPROC)SetWindowLong(butPtr->hwnd, GWL_WNDPROC,
- (DWORD) ButtonProc);
-
- 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) {
- SetWindowLong(hwnd, GWL_WNDPROC, (DWORD) winButPtr->oldProc);
- }
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * 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;
- 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. */
-
- 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;
- }
-
- /*
- * Compute width of default ring and offset for pushed buttons.
- */
-
- if (butPtr->type == TYPE_BUTTON) {
- defaultWidth = ((butPtr->defaultState == tkActiveUid)
- ? 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);
-
- imageOrBitmap:
- TkComputeAnchor(butPtr->anchor, tkwin, 0, 0,
- butPtr->indicatorSpace + width, height, &x, &y);
- x += butPtr->indicatorSpace;
-
- 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 {
- RECT rect;
- 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);
-
- /*
- * 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.
- */
-
- if (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-2;
- rect.left = x-2;
- rect.right = x+butPtr->textWidth + 1;
- rect.bottom = y+butPtr->textHeight + 1;
- }
- SetTextColor(dc, gc->foreground);
- SetBkColor(dc, gc->background);
- DrawFocusRect(dc, &rect);
- TkWinReleaseDrawableDC(pixmap, dc, &state);
- }
- 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
- && boxesPtr) {
- int xSrc, ySrc;
-
- x -= butPtr->indicatorSpace;
- y -= butPtr->indicatorDiameter / 2;
-
- xSrc = (butPtr->flags & SELECTED) ? boxWidth : 0;
- if (butPtr->state == tkActiveUid) {
- xSrc += boxWidth*2;
- }
- ySrc = (butPtr->type == TYPE_RADIO_BUTTON) ? 0 : 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.
- */
-
- 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 == tkDisabledUid) {
- 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, boxWidth, boxHeight, xSrc, ySrc,
- boxWidth, boxHeight, boxesBits, (LPBITMAPINFO)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.
- */
-
- 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.
- */
-
- 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);
- }
-
- /*
- * 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;
- butPtr->indicatorSpace = 0;
-
- if (!boxesPtr) {
- InitBoxes();
- }
-
- 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 = boxWidth * 2;
- butPtr->indicatorDiameter = boxHeight;
- }
- } 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 = boxHeight;
- butPtr->indicatorSpace = butPtr->indicatorDiameter + avgWidth;
- }
-
- /*
- * Increase the inset to allow for the focus ring.
- */
-
- if (butPtr->type != TYPE_LABEL) {
- butPtr->inset += 3;
- }
- }
-
- /*
- * When issuing the geometry request, add extra space for the indicator,
- * if any, and for the border and padding, plus an extra pixel 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)
- || ((butPtr->type >= TYPE_CHECK_BUTTON) && !butPtr->indicatorOn)) {
- width += 1;
- height += 1;
- }
- Tk_GeometryRequest(butPtr->tkwin, (int) (width + butPtr->indicatorSpace
- + 2*butPtr->inset), (int) (height + 2*butPtr->inset));
- 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);
- return 0;
- }
- case BN_CLICKED: {
- int code;
- Tcl_Interp *interp = butPtr->info.interp;
- if (butPtr->info.state != tkDisabledUid) {
- 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);
- }
-