backout tcl/tk 8.6.9

1 files changed, 1307 insertions, 0 deletions

diff --git a/tk8.6/win/tkWinButton.c b/tk8.6/win/tkWinButton.c
new file mode 100644
index 0000000..e46bcb3
--- /dev/null
+++ b/tk8.6/win/tkWinButton.c
@@ -0,0 +1,1307 @@
+/*
+ * 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.
+ */
+
+#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  (LABEL_STYLE | BS_PUSHBUTTON)
+#define CHECK_STYLE (LABEL_STYLE | BS_CHECKBOX)
+#define RADIO_STYLE (LABEL_STYLE | BS_RADIOBUTTON)
+
+/*
+ * 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. */
+} ThreadSpecificData;
+static Tcl_ThreadDataKey dataKey;
+
+/*
+ * Declarations for functions defined in this file.
+ */
+
+static LRESULT CALLBACK	ButtonProc(HWND hwnd, UINT message,
+			    WPARAM wParam, LPARAM lParam);
+static Window		CreateProc(Tk_Window tkwin, Window parent,
+			    ClientData instanceData);
+static void		InitBoxes(void);
+
+/*
+ * The class procedure table for the button widgets.
+ */
+
+const Tk_ClassProcs tkpButtonProcs = {
+    sizeof(Tk_ClassProcs),	/* size */
+    TkButtonWorldChanged,	/* worldChangedProc */
+    CreateProc,			/* createProc */
+    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(void)
+{
+    /*
+     * 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, TEXT("buttons"), RT_BITMAP);
+    if (hrsrc == NULL) {
+	Tcl_Panic("FindResource() failed for buttons bitmap resource, "
+            "resources in tk_base.rc must be linked into Tk dll or static executable");
+    } else {
+	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 = 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()
+{
+    int width = GetSystemMetrics(SM_CXEDGE);
+	if (width > 0) {
+	    sprintf(tkDefButtonBorderWidth, "%d", width);
+	}
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TkpCreateButton --
+ *
+ *	Allocate a new TkButton structure.
+ *
+ * Results:
+ *	Returns a newly allocated TkButton structure.
+ *
+ * Side effects:
+ *	Registers an event handler for the widget.
+ *
+ *----------------------------------------------------------------------
+ */
+
+TkButton *
+TkpCreateButton(
+    Tk_Window tkwin)
+{
+    WinButton *butPtr;
+
+    butPtr = 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(
+    Tk_Window tkwin,		/* Token for window. */
+    Window parentWin,		/* Parent of new window. */
+    ClientData instanceData)	/* Button instance data. */
+{
+    Window window;
+    HWND parent;
+    const TCHAR *class;
+    WinButton *butPtr = (WinButton *)instanceData;
+
+    parent = Tk_GetHWND(parentWin);
+    if (butPtr->info.type == TYPE_LABEL) {
+	class = TEXT("STATIC");
+	butPtr->style = SS_OWNERDRAW | WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS;
+    } else {
+	class = TEXT("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)SetWindowLongPtr(butPtr->hwnd, GWLP_WNDPROC,
+	    (LONG_PTR) 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(
+    TkButton *butPtr)
+{
+    WinButton *winButPtr = (WinButton *)butPtr;
+    HWND hwnd = winButPtr->hwnd;
+
+    if (hwnd) {
+	SetWindowLongPtr(hwnd, GWLP_WNDPROC, (LONG_PTR) 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)	/* 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 = 0, height = 0, 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 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);
+	}
+	if ((butPtr->state == STATE_DISABLED) &&
+	       	(butPtr->disabledFg != NULL)) {
+	    COLORREF oldFgColor = gc->foreground;
+
+	    if (gc->background == GetSysColor(COLOR_BTNFACE)) {
+		gc->foreground = GetSysColor(COLOR_3DHILIGHT);
+		Tk_DrawTextLayout(butPtr->display, pixmap, gc,
+		    butPtr->textLayout, x + textXOffset + 1,
+		    y + textYOffset + 1, 0, -1);
+		Tk_UnderlineTextLayout(butPtr->display, pixmap, gc,
+		    butPtr->textLayout, x + textXOffset + 1,
+		    y + textYOffset + 1,
+		    butPtr->underline);
+		gc->foreground = oldFgColor;
+	    }
+	}
+
+	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 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);
+	    }
+	} 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;
+	    }
+	    if ((butPtr->state == STATE_DISABLED) &&
+		    (butPtr->disabledFg != NULL)) {
+		COLORREF oldFgColor = gc->foreground;
+		if (gc->background == GetSysColor(COLOR_BTNFACE)) {
+		    gc->foreground = GetSysColor(COLOR_3DHILIGHT);
+		    Tk_DrawTextLayout(butPtr->display, pixmap, gc,
+		       	butPtr->textLayout,
+			x + 1, y + 1, 0, -1);
+		    Tk_UnderlineTextLayout(butPtr->display, pixmap, gc,
+			butPtr->textLayout, x + 1, y + 1, butPtr->underline);
+		    gc->foreground = oldFgColor;
+		}
+	    }
+	    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|TRISTATED)) ? 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) || (butPtr->flags & TRISTATED)) {
+	    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, (int)tsdPtr->boxWidth, (int)tsdPtr->boxHeight,
+		xSrc, ySrc, (int)tsdPtr->boxWidth, (int)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,
+		(int) butPtr->highlightColorPtr->pixel);
+	TkWinFillRect(dc, 0, 0, defaultWidth, Tk_Height(tkwin),
+		(int) butPtr->highlightColorPtr->pixel);
+	TkWinFillRect(dc, 0, Tk_Height(tkwin) - defaultWidth,
+		Tk_Width(tkwin), defaultWidth,
+		(int) butPtr->highlightColorPtr->pixel);
+	TkWinFillRect(dc, Tk_Width(tkwin) - defaultWidth, 0,
+		defaultWidth, Tk_Height(tkwin),
+		(int) 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(
+    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) {
+	    minWidth = -(butPtr->width);	    /* Min width in chars */
+	    width = avgWidth * minWidth;	    /* Allow for characters */
+	    width += (int)(0.5 + (6 * hDLU));	    /* Add for padding */
+	}
+
+	/*
+	 * 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;
+	case COMPOUND_NONE:
+	    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 hwnd,
+    UINT message,
+    WPARAM wParam,
+    LPARAM lParam)
+{
+    LRESULT result;
+    WinButton *butPtr;
+    Tk_Window tkwin = Tk_HWNDToWindow(hwnd);
+
+    if (tkwin == NULL) {
+	Tcl_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: {
+	/*
+	 * OOPS: chromium fires WM_NULL regularly to ping if plugin is still
+	 * alive. When using an external window (i.e. via the tcl plugin), this
+	 * causes all buttons to fire once a second, so we need to make sure
+	 * that we are not dealing with the chromium life check.
+	*/
+        if (wParam != 0 || lParam != 0) {
+	    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_BackgroundException(interp, code);
+		}
+		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);
+}
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */