/*
 * tkMacOSXButton.c --
 *
 *	This file implements the Macintosh specific portion of the
 *	button widgets.
 *
 * Copyright (c) 1996-1997 by Sun Microsystems, Inc.
 * Copyright 2001, Apple Computer, Inc.
 * Copyright (c) 2006-2007 Daniel A. Steffen <das@users.sourceforge.net>
 *
 * See the file "license.terms" for information on usage and redistribution
 * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 *
 * RCS: @(#) $Id: tkMacOSXButton.c,v 1.32.2.1 2008/12/07 16:45:59 das Exp $
 */

#include "tkMacOSXPrivate.h"
#include "tkButton.h"
#include "tkMacOSXFont.h"
#include "tkMacOSXDebug.h"

#define DEFAULT_USE_TK_TEXT 0

#define CONTROL_INITIALIZED 1
#define FIRST_DRAW	    2
#define ACTIVE		    4

#define MAX_VALUE	    2

/*
 * Default insets for controls
 */

#define DEF_INSET_LEFT 2
#define DEF_INSET_RIGHT 2
#define DEF_INSET_TOP 2
#define DEF_INSET_BOTTOM 4

/*
 * Some defines used to control what type of control is drawn.
 */

#define DRAW_LABEL	0	/* Labels are treated genericly. */
#define DRAW_CONTROL	1	/* Draw using the Native control. */
#define DRAW_CUSTOM	2	/* Make our own button drawing. */
#define DRAW_BEVEL	3

/*
 * Declaration of Mac specific button structure.
 */

typedef struct {
    SInt16 initialValue;
    SInt16 minValue;
    SInt16 maxValue;
    SInt16 procID;
    int isBevel;
} MacControlParams;

typedef struct {
    int drawType;
    Tk_3DBorder border;
    int relief;
    int offset;			/* 0 means this is a normal widget. 1 means
				 * it is an image button, so we offset the
				 * image to make the button appear to move
				 * up and down as the relief changes. */
    GC gc;
    int hasImageOrBitmap;
} DrawParams;

typedef struct {
    TkButton info;		/* Generic button info */
    int id;
    int usingControl;
    int useTkText;
    int flags;			/* Initialisation status */
    MacControlParams params;
    WindowRef windowRef;
    unsigned long userPaneBackground;
    ControlRef userPane;	/* Carbon control */
    ControlRef control;		/* Carbon control */
    Str255 controlTitle;
    ControlFontStyleRec fontStyle;
    /*
     * The following are used to store the image content for
     * beveled buttons, i.e. buttons with images.
     */
    ControlButtonContentInfo bevelButtonContent;
    OpenCPicParams picParams;
} MacButton;

/*
 * Forward declarations for procedures defined later in this file:
 */

static OSStatus SetUserPaneDrawProc(ControlRef control,
	ControlUserPaneDrawProcPtr upp);
static OSStatus SetUserPaneSetUpSpecialBackgroundProc(ControlRef control,
	ControlUserPaneBackgroundProcPtr upp);
static void UserPaneDraw(ControlRef control, ControlPartCode cpc);
static void UserPaneBackgroundProc(ControlHandle,
	ControlBackgroundPtr info);

static void ButtonEventProc(ClientData clientData, XEvent *eventPtr);
static int UpdateControlColors(MacButton *mbPtr);
static void TkMacOSXComputeControlParams(TkButton *butPtr,
	MacControlParams *paramsPtr);
static int TkMacOSXComputeDrawParams(TkButton *butPtr, DrawParams *dpPtr);
static void TkMacOSXDrawControl(MacButton *butPtr, GWorldPtr destPort, GC gc,
	Pixmap pixmap);
static void SetupBevelButton(MacButton *butPtr, ControlRef controlHandle,
	GWorldPtr destPort, GC gc, Pixmap pixmap);

/*
 * The class procedure table for the button widgets.
 */

Tk_ClassProcs tkpButtonProcs = {
    sizeof(Tk_ClassProcs),	/* size */
    TkButtonWorldChanged,	/* worldChangedProc */
};

static int bCount;


/*
 *----------------------------------------------------------------------
 *
 * 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)
{
    MacButton *macButtonPtr = (MacButton *) ckalloc(sizeof(MacButton));

    Tk_CreateEventHandler(tkwin, ActivateMask,
	    ButtonEventProc, (ClientData) macButtonPtr);
    macButtonPtr->id = bCount++;
    macButtonPtr->usingControl = 0;
    macButtonPtr->flags = 0;
    macButtonPtr->userPaneBackground = PIXEL_MAGIC << 24;
    macButtonPtr->userPane = NULL;
    macButtonPtr->control = NULL;
    macButtonPtr->controlTitle[0] = 0;
    macButtonPtr->controlTitle[1] = 0;
    bzero(&macButtonPtr->params, sizeof(macButtonPtr->params));
    bzero(&macButtonPtr->fontStyle, sizeof(macButtonPtr->fontStyle));

    return (TkButton *)macButtonPtr;
}

/*
 *----------------------------------------------------------------------
 *
 * TkpDisplayButton --
 *
 *	This procedure is invoked to display a button widget. It is
 *	normally invoked as an idle handler.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	Commands are output to X to display the button in its
 *	current mode. The REDRAW_PENDING flag is cleared.
 *
 *----------------------------------------------------------------------
 */

void
TkpDisplayButton(
    ClientData clientData)	/* Information about widget. */
{
    MacButton *macButtonPtr = (MacButton *) clientData;
    TkButton *butPtr = (TkButton *) clientData;
    Tk_Window tkwin = butPtr->tkwin;
    CGrafPtr destPort, savePort;
    Boolean portChanged;
    Pixmap pixmap;
    int width, height, fullWidth, fullHeight, textXOffset, textYOffset;
    int borderWidth, wasUsingControl;
    int haveImage = 0, haveText = 0, imageWidth = 0, imageHeight = 0;
    int imageXOffset = 0, imageYOffset = 0; /* image information that will
					     * be used to restrict disabled
					     * pixmap as well */
    DrawParams drawParams, *dpPtr = &drawParams;

    butPtr->flags &= ~REDRAW_PENDING;
    if ((butPtr->tkwin == NULL) || !Tk_IsMapped(tkwin)) {
	return;
    }
    pixmap = (Pixmap) Tk_WindowId(tkwin);
    wasUsingControl = macButtonPtr->usingControl;

    if (TkMacOSXComputeDrawParams(butPtr, &drawParams) ) {
	macButtonPtr->usingControl = 1;
	if (butPtr->type == TYPE_BUTTON) {
	    macButtonPtr->useTkText = 0;
	} else {
	    macButtonPtr->useTkText = 1;
	}
    } else {
	macButtonPtr->usingControl = 0;
	macButtonPtr->useTkText = 1;
    }

    /*
     * See the comment in UpdateControlColors as to why we use the
     * highlightbackground for the border of Macintosh buttons.
     */

    if (macButtonPtr->useTkText) {
	if (butPtr->type == TYPE_BUTTON) {
	    Tk_Fill3DRectangle(tkwin, pixmap, butPtr->highlightBorder, 0, 0,
		    Tk_Width(tkwin), Tk_Height(tkwin), 0, TK_RELIEF_FLAT);
	} else {
	    Tk_Fill3DRectangle(tkwin, pixmap, butPtr->normalBorder, 0, 0,
		    Tk_Width(tkwin), Tk_Height(tkwin), 0, TK_RELIEF_FLAT);
	}
    }

    /*
     * Set up clipping region. Make sure the we are using the port
     * for this button, or we will set the wrong window's clip.
     */

    destPort = TkMacOSXGetDrawablePort(pixmap);
    portChanged = QDSwapPort(destPort, &savePort);
    TkMacOSXSetUpClippingRgn(pixmap);

    /*
     * Draw the native portion of the buttons. Start by creating the control
     * if it doesn't already exist. Then configure the Macintosh control from
     * the Tk info. Finally, we call Draw1Control to draw to the screen.
     */

    if (macButtonPtr->usingControl) {
	borderWidth = 0;
	TkMacOSXDrawControl(macButtonPtr, destPort, dpPtr->gc, pixmap);
    } else if (wasUsingControl && macButtonPtr->userPane) {
	DisposeControl(macButtonPtr->userPane);
	macButtonPtr->userPane = NULL;
	macButtonPtr->control = NULL;
	macButtonPtr->flags = 0;
    }

    if ((dpPtr->drawType == DRAW_CUSTOM) || (dpPtr->drawType == DRAW_LABEL)) {
	borderWidth = butPtr->borderWidth;
    }

    /*
     * Display image or bitmap or text for button. This has
     * already been done under Appearance with the Bevel
     * button types.
     */

    if (dpPtr->drawType == DRAW_BEVEL) {
	goto applyStipple;
    }

    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 x, y;

	textXOffset = 0;
	textYOffset = 0;
	fullWidth = 0;
	fullHeight = 0;

	switch ((enum compound) butPtr->compound) {
	    case COMPOUND_TOP:
	    case COMPOUND_BOTTOM:
		/*
		 * Image is above or below text.
		 */
		if (butPtr->compound == COMPOUND_TOP) {
		    textYOffset = height + 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;

	x += dpPtr->offset;
	y += dpPtr->offset;
	if (dpPtr->relief == TK_RELIEF_RAISED) {
	    x -= dpPtr->offset;
	    y -= dpPtr->offset;
	} else if (dpPtr->relief == TK_RELIEF_SUNKEN) {
	    x += dpPtr->offset;
	    y += dpPtr->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, dpPtr->gc, imageXOffset,
		    imageYOffset);
	    XCopyPlane(butPtr->display, butPtr->bitmap, pixmap, dpPtr->gc,
		    0, 0, width, height, imageXOffset, imageYOffset, 1);
	    XSetClipOrigin(butPtr->display, dpPtr->gc, 0, 0);
	}

	if (macButtonPtr->useTkText) {
	    Tk_DrawTextLayout(butPtr->display, pixmap, dpPtr->gc,
		    butPtr->textLayout, x + textXOffset, y + textYOffset, 0,
		    -1);
	    Tk_UnderlineTextLayout(butPtr->display, pixmap, dpPtr->gc,
		    butPtr->textLayout, x + textXOffset, y + textYOffset,
		    butPtr->underline);
	}
	y += fullHeight/2;
    } else if (haveImage) {
	int x = 0, y;

	TkComputeAnchor(butPtr->anchor, tkwin, 0, 0,
		butPtr->indicatorSpace + width, height, &x, &y);
	x += butPtr->indicatorSpace;

	x += dpPtr->offset;
	y += dpPtr->offset;
	if (dpPtr->relief == TK_RELIEF_RAISED) {
	    x -= dpPtr->offset;
	    y -= dpPtr->offset;
	} else if (dpPtr->relief == TK_RELIEF_SUNKEN) {
	    x += dpPtr->offset;
	    y += dpPtr->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, dpPtr->gc, x, y);
	    XCopyPlane(butPtr->display, butPtr->bitmap, pixmap, dpPtr->gc,
		    0, 0, width, height, x, y, 1);
	    XSetClipOrigin(butPtr->display, dpPtr->gc, 0, 0);
	}
	y += height/2;
    } else if (macButtonPtr->useTkText) {
	int x = 0, y;

	TkComputeAnchor(butPtr->anchor, tkwin, butPtr->padX, butPtr->padY,
		butPtr->indicatorSpace + butPtr->textWidth,
		butPtr->textHeight, &x, &y);
	x += butPtr->indicatorSpace;
	Tk_DrawTextLayout(butPtr->display, pixmap, dpPtr->gc,
		butPtr->textLayout, x, y, 0, -1);
    }

    /*
     * 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.
     */

  applyStipple:
    if (macButtonPtr->useTkText) {
	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 (dpPtr->relief != TK_RELIEF_FLAT) {
	    int inset = butPtr->highlightWidth;

	    Tk_Draw3DRectangle(tkwin, pixmap, dpPtr->border, inset, inset,
		    Tk_Width(tkwin) - 2*inset, Tk_Height(tkwin) - 2*inset,
		    borderWidth, dpPtr->relief);
	}
    }
    if (portChanged) {
	QDSwapPort(savePort, NULL);
    }
}

/*
 *----------------------------------------------------------------------
 *
 * 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(
    TkButton *butPtr)		/* Button whose geometry may have changed. */
{
    int width, height, avgWidth, haveImage = 0, haveText = 0;
    int xInset, yInset, txtWidth, txtHeight;
    Tk_FontMetrics fm;
    DrawParams drawParams;

    /*
     * First figure out the size of the contents of the button.
     */

    width = 0;
    height = 0;
    txtWidth = 0;
    txtHeight = 0;
    avgWidth = 0;

    butPtr->indicatorSpace = 0;
    if (butPtr->image != NULL) {
	Tk_SizeOfImage(butPtr->image, &width, &height);
	haveImage = 1;
    } else if (butPtr->bitmap != None) {
	Tk_SizeOfBitmap(butPtr->display, butPtr->bitmap, &width, &height);
	haveImage = 1;
    }

    if (haveImage == 0 || butPtr->compound != COMPOUND_NONE) {
	Tk_FreeTextLayout(butPtr->textLayout);
	butPtr->textLayout = Tk_ComputeTextLayout(butPtr->tkfont,
		Tcl_GetString(butPtr->textPtr), -1, butPtr->wrapLength,
		butPtr->justify, 0, &butPtr->textWidth, &butPtr->textHeight);

	txtWidth = butPtr->textWidth;
	txtHeight = butPtr->textHeight;
	avgWidth = Tk_TextWidth(butPtr->tkfont, "0", 1);
	Tk_GetFontMetrics(butPtr->tkfont, &fm);
	haveText = (txtWidth != 0 && txtHeight != 0);
    }

    /*
     * If the button is compound (ie, it shows both an image and text),
     * the new geometry is a combination of the image and text geometry.
     * We only honor the compound bit if the button has both text and an
     * image, because otherwise it is not really a compound button.
     */

    if (butPtr->compound != COMPOUND_NONE && haveImage && haveText) {
	switch ((enum compound) butPtr->compound) {
	    case COMPOUND_TOP:
	    case COMPOUND_BOTTOM:
		/*
		 * Image is above or below text.
		 */

		height += txtHeight + butPtr->padY;
		width = (width > txtWidth ? width : txtWidth);
		break;
	    case COMPOUND_LEFT:
	    case COMPOUND_RIGHT:
		/*
		 * Image is left or right of text.
		 */

		width += txtWidth + butPtr->padX;
		height = (height > txtHeight ? height : txtHeight);
		break;
	    case COMPOUND_CENTER:
		/*
		 * Image and text are superimposed.
		 */

		width = (width > txtWidth ? width : txtWidth);
		height = (height > txtHeight ? height : txtHeight);
		break;
	    case COMPOUND_NONE:
		break;
	}
	if (butPtr->width > 0) {
	    width = butPtr->width;
	}
	if (butPtr->height > 0) {
	    height = butPtr->height;
	}

	if ((butPtr->type >= TYPE_CHECK_BUTTON) && butPtr->indicatorOn) {
	    butPtr->indicatorSpace = height;
	    if (butPtr->type == TYPE_CHECK_BUTTON) {
		butPtr->indicatorDiameter = (65 * height)/100;
	    } else {
		butPtr->indicatorDiameter = (75 * height)/100;
	    }
	}

	width += 2 * butPtr->padX;
	height += 2 * butPtr->padY;
    } else if (haveImage) {
	if (butPtr->width > 0) {
	    width = butPtr->width;
	}
	if (butPtr->height > 0) {
	    height = butPtr->height;
	}
	if ((butPtr->type >= TYPE_CHECK_BUTTON) && butPtr->indicatorOn) {
	    butPtr->indicatorSpace = height;
	    if (butPtr->type == TYPE_CHECK_BUTTON) {
		butPtr->indicatorDiameter = (65 * height)/100;
	    } else {
		butPtr->indicatorDiameter = (75 * height)/100;
	    }
	}
    } else {
	width = txtWidth;
	height = txtHeight;
	if (butPtr->width > 0) {
	    width = butPtr->width * avgWidth;
	}
	if (butPtr->height > 0) {
	    height = butPtr->height * fm.linespace;
	}
	if ((butPtr->type >= TYPE_CHECK_BUTTON) && butPtr->indicatorOn) {
	    butPtr->indicatorDiameter = fm.linespace;
	    if (butPtr->type == TYPE_CHECK_BUTTON) {
		butPtr->indicatorDiameter =
			(80 * butPtr->indicatorDiameter)/100;
	    }
	    butPtr->indicatorSpace = butPtr->indicatorDiameter + avgWidth;
	}
    }

    /*
     * Now figure out the size of the border decorations for the button.
     */

    if (butPtr->highlightWidth < 0) {
	butPtr->highlightWidth = 0;
    }

    /*
     * The width and height calculation for Appearance buttons with images &
     * non-Appearance buttons with images is different. In the latter case,
     * we add the borderwidth to the inset, since we are going to stamp a
     * 3-D border over the image. In the former, we add it to the height,
     * directly, since Appearance will draw the border as part of our control.
     *
     * When issuing the geometry request, add extra space for the indicator,
     * if any, and for the border and padding, plus if this is an image two
     * extra pixels so the display can be offset by 1 pixel in either
     * direction for the raised or lowered effect.
     *
     * The highlight width corresponds to the default ring on the Macintosh.
     * As such, the highlight width is only added if the button is the default
     * button. The actual width of the default ring is one less than the
     * highlight width as there is also one pixel of spacing.
     * Appearance buttons with images do not have a highlight ring, because the
     * Bevel button type does not support one.
     */

    if ((butPtr->image == None) && (butPtr->bitmap == None)) {
	width += 2*butPtr->padX;
	height += 2*butPtr->padY;
    }

    if ((butPtr->type == TYPE_BUTTON)) {
	if ((butPtr->image == None) && (butPtr->bitmap == None)) {
	    butPtr->inset = 0;
	    if (butPtr->defaultState != STATE_DISABLED) {
		butPtr->inset += butPtr->highlightWidth;
	    }
	} else {
	    butPtr->inset = 0;
	    width += (2 * butPtr->borderWidth + 4);
	    height += (2 * butPtr->borderWidth + 4);
	}
    } else if (butPtr->type == TYPE_LABEL) {
	butPtr->inset = butPtr->borderWidth;
    } else if (butPtr->indicatorOn) {
	butPtr->inset = 0;
    } else {
	/*
	 * Under Appearance, the Checkbutton or radiobutton with an image
	 * is represented by a BevelButton with the Sticky defProc...
	 * So we must set its height in the same way as the Button
	 * with an image or bitmap.
	 */

	if (butPtr->image != None || butPtr->bitmap != None) {
	    int border;

	    butPtr->inset = 0;
	    if (butPtr->borderWidth <= 2) {
		border = 6;
	    } else {
		border = 2 * butPtr->borderWidth + 2;
	    }
	    width += border;
	    height += border;
	} else {
	    butPtr->inset = butPtr->borderWidth;
	}
    }

    if (TkMacOSXComputeDrawParams(butPtr, &drawParams)) {
	xInset = butPtr->indicatorSpace + DEF_INSET_LEFT + DEF_INSET_RIGHT;
	yInset = DEF_INSET_TOP + DEF_INSET_BOTTOM;
    } else {
	xInset = butPtr->indicatorSpace+butPtr->inset*2;
	yInset = butPtr->inset*2;
    }
    Tk_GeometryRequest(butPtr->tkwin, width + xInset, height + yInset);
    Tk_SetInternalBorder(butPtr->tkwin, butPtr->inset);
}

/*
 *----------------------------------------------------------------------
 *
 * TkpDestroyButton --
 *
 *	Free data structures associated with the button control.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	Restores the default control state.
 *
 *----------------------------------------------------------------------
 */

void
TkpDestroyButton(
    TkButton *butPtr)
{
    MacButton *mbPtr = (MacButton *) butPtr; /* Mac button. */

    if (mbPtr->userPane) {
	DisposeControl(mbPtr->userPane);
	mbPtr->userPane = NULL;
    }
}

/*
 *----------------------------------------------------------------------
 *
 * TkMacOSXInitControl --
 *
 *	This procedure initialises a Carbon control.
 *
 * Results:
 *	0 on success, 1 on failure.
 *
 * Side effects:
 *	A background pane control and the control itself is created
 *	The contol is embedded in the background control
 *	The background control is embedded in the root control
 *	of the containing window
 *	The creation parameters for the control are also computed
 *
 *----------------------------------------------------------------------
 */

static int
TkMacOSXInitControl(
    MacButton *mbPtr,		/* Mac button. */
    GWorldPtr destPort,
    GC gc,
    Pixmap pixmap,
    Rect *paneRect,
    Rect *cntrRect)
{
    TkButton *butPtr = (TkButton *) mbPtr;
    ControlRef rootControl;
    SInt16 procID, initialValue, minValue, maxValue;
    Boolean initiallyVisible;
    SInt32 controlReference;

    rootControl = TkMacOSXGetRootControl(Tk_WindowId(butPtr->tkwin));
    mbPtr->windowRef = TkMacOSXDrawableWindow(Tk_WindowId(butPtr->tkwin));

    /*
     * Set up the user pane.
     */

    initiallyVisible = false;
    initialValue = kControlSupportsEmbedding|kControlHasSpecialBackground;
    minValue = 0;
    maxValue = 1;
    procID = kControlUserPaneProc;
    controlReference = (SInt32)mbPtr;
    mbPtr->userPane = NewControl(mbPtr->windowRef, paneRect, "\p",
	    initiallyVisible, initialValue, minValue, maxValue, procID,
	    controlReference);

    if (!mbPtr->userPane) {
	TkMacOSXDbgMsg("Failed to create user pane control");
	return 1;
    }
    if (ChkErr(EmbedControl, mbPtr->userPane,rootControl) != noErr) {
	return 1;
    }

    SetUserPaneSetUpSpecialBackgroundProc(mbPtr->userPane,
	    UserPaneBackgroundProc);
    SetUserPaneDrawProc(mbPtr->userPane,UserPaneDraw);
    initiallyVisible = false;
    TkMacOSXComputeControlParams(butPtr,&mbPtr->params);
    mbPtr->control = NewControl(mbPtr->windowRef, cntrRect, "\p",
	    initiallyVisible, mbPtr->params.initialValue,
	    mbPtr->params.minValue, mbPtr->params.maxValue,
	    mbPtr->params.procID, controlReference);

    if (!mbPtr->control) {
	TkMacOSXDbgMsg("Failed to create control of type %d\n", procID);
	return 1;
    }
    if (ChkErr(EmbedControl, mbPtr->control,mbPtr->userPane) != noErr ) {
	return 1;
    }

    mbPtr->flags |= (CONTROL_INITIALIZED | FIRST_DRAW);
    if (IsWindowActive(mbPtr->windowRef)) {
	mbPtr->flags |= ACTIVE;
    }
    return 0;
}

/*
 *--------------------------------------------------------------
 *
 * TkMacOSXDrawControl --
 *
 *	This function draws the tk button using Mac controls
 *	In addition, this code may apply custom colors passed
 *	in the TkButton.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	The control is created, or reinitialised as needed.
 *
 *--------------------------------------------------------------
 */

static void
TkMacOSXDrawControl(
    MacButton *mbPtr,		/* Mac button. */
    GWorldPtr destPort,		/* Off screen GWorld. */
    GC gc,			/* The GC we are drawing into - needed for the
				 * bevel button */
    Pixmap pixmap)		/* The pixmap we are drawing into - needed for
				 * the bevel button */
{
    TkButton *butPtr = (TkButton *) mbPtr;
    TkWindow *winPtr;
    Rect paneRect, cntrRect;
    int active, enabled;
    int rebuild;

    winPtr = (TkWindow *) butPtr->tkwin;

    paneRect.left = winPtr->privatePtr->xOff;
    paneRect.top = winPtr->privatePtr->yOff;
    paneRect.right = paneRect.left + Tk_Width(butPtr->tkwin);
    paneRect.bottom = paneRect.top + Tk_Height(butPtr->tkwin);

    cntrRect = paneRect;

/*
    cntrRect.left += butPtr->inset;
    cntrRect.top += butPtr->inset;
    cntrRect.right -= butPtr->inset;
    cntrRect.bottom -= butPtr->inset;
*/
    cntrRect.left += DEF_INSET_LEFT;
    cntrRect.top += DEF_INSET_TOP;
    cntrRect.right -= DEF_INSET_RIGHT;
    cntrRect.bottom -= DEF_INSET_BOTTOM;

    /*
     * The control has been previously initialised.
     * It may need to be re-initialised
     */
#ifdef TK_REBUILD_TOPLEVEL
    rebuild = (winPtr->flags & TK_REBUILD_TOPLEVEL);
    winPtr->flags &= ~TK_REBUILD_TOPLEVEL;
#else
    rebuild = 0;
#endif
    if (mbPtr->flags) {
	MacControlParams params;

	TkMacOSXComputeControlParams(butPtr, &params);
	if (rebuild || bcmp(&params, &mbPtr->params, sizeof(params))) {
	    /*
	     * The type of control has changed.
	     * Clean it up and clear the flag.
	     */

	    if (mbPtr->userPane) {
		DisposeControl(mbPtr->userPane);
		mbPtr->userPane = NULL;
		mbPtr->control = NULL;
	    }
	    mbPtr->flags = 0;
	}
    }
    if (!(mbPtr->flags & CONTROL_INITIALIZED)) {
	if (TkMacOSXInitControl(mbPtr, destPort, gc, pixmap, &paneRect,
		&cntrRect)) {
	    return;
	}
    }
    SetControlBounds(mbPtr->userPane, &paneRect);
    SetControlBounds(mbPtr->control, &cntrRect);

    if (!mbPtr->useTkText) {
	Str255 controlTitle;
	ControlFontStyleRec fontStyle;
	Tk_Font font;
	int len;

	if (((mbPtr->info.image == NULL) && (mbPtr->info.bitmap == None))
		|| (mbPtr->info.compound != COMPOUND_NONE)) {
	    len = TkFontGetFirstTextLayout(butPtr->textLayout,
		    &font, (char*) controlTitle);
	    controlTitle[len] = 0;
	} else {
	    len = 0;
	    controlTitle[0] = 0;
	}
	if (rebuild || bcmp(mbPtr->controlTitle, controlTitle, len+1)) {
	    CFStringRef cf = CFStringCreateWithCString(NULL,
		    (char*) controlTitle, kCFStringEncodingUTF8);

	    if (cf != NULL) {
		SetControlTitleWithCFString(mbPtr->control, cf);
		CFRelease(cf);
	    }
	    bcopy(controlTitle, mbPtr->controlTitle, len+1);
	}
	if (len) {
	    TkMacOSXInitControlFontStyle(font, &fontStyle);
	    if (bcmp(&mbPtr->fontStyle, &fontStyle, sizeof(fontStyle)) ) {
		ChkErr(SetControlFontStyle, mbPtr->control, &fontStyle);
		bcopy(&fontStyle, &mbPtr->fontStyle, sizeof(fontStyle));
	    }
	}
    }
    if (mbPtr->params.isBevel) {
	/*
	 * Initialiase the image/button parameters.
	 */

	SetupBevelButton(mbPtr, mbPtr->control, destPort, gc, pixmap);
    }

    if (butPtr->flags & SELECTED) {
	SetControlValue(mbPtr->control, 1);
    } else if (butPtr->flags & TRISTATED) {
	SetControlValue(mbPtr->control, 2);
    } else {
	SetControlValue(mbPtr->control, 0);
    }

    active = ((mbPtr->flags & ACTIVE) != 0);
    if (active != IsControlActive(mbPtr->control)) {
	if (active) {
	    ChkErr(ActivateControl, mbPtr->control);
	} else {
	    ChkErr(DeactivateControl, mbPtr->control);
	}
    }
    enabled = !(butPtr->state == STATE_DISABLED);
    if (enabled != IsControlEnabled(mbPtr->control)) {
	if (enabled) {
	    ChkErr(EnableControl, mbPtr->control);
	} else {
	    ChkErr(DisableControl, mbPtr->control);
	}
    }
    if (active && enabled) {
	if (butPtr->state == STATE_ACTIVE) {
	    if (mbPtr->params.isBevel) {
		HiliteControl(mbPtr->control, kControlButtonPart);
	    } else {
		switch (butPtr->type) {
		    case TYPE_BUTTON:
			HiliteControl(mbPtr->control, kControlButtonPart);
			break;
		    case TYPE_RADIO_BUTTON:
			HiliteControl(mbPtr->control, kControlRadioButtonPart);
			break;
		    case TYPE_CHECK_BUTTON:
			HiliteControl(mbPtr->control, kControlCheckBoxPart);
			break;
		}
	    }
	} else {
	    HiliteControl(mbPtr->control, kControlNoPart);
	}
    }
    UpdateControlColors(mbPtr);

    if (butPtr->type == TYPE_BUTTON && !mbPtr->params.isBevel) {
	Boolean isDefault;

	if (butPtr->defaultState == STATE_ACTIVE) {
	    isDefault = true;
	} else {
	    isDefault = false;
	}
	ChkErr(SetControlData, mbPtr->control, kControlNoPart,
		kControlPushButtonDefaultTag, sizeof(isDefault), &isDefault);
    }

    if (mbPtr->flags & FIRST_DRAW) {
	ShowControl(mbPtr->userPane);
	ShowControl(mbPtr->control);
	mbPtr->flags ^= FIRST_DRAW;
    } else {
	SetControlVisibility(mbPtr->control, true, true);
	Draw1Control(mbPtr->userPane);
    }

    if (mbPtr->params.isBevel) {
	if (mbPtr->bevelButtonContent.contentType ==
		kControlContentPictHandle) {
	    KillPicture(mbPtr->bevelButtonContent.u.picture);
	}
    }
}

/*
 *--------------------------------------------------------------
 *
 * SetupBevelButton --
 *
 *	Sets up the Bevel Button with image by copying the
 *	source image onto the PicHandle for the button.
 *
 * Results:
 *	None
 *
 * Side effects:
 *	The image or bitmap for the button is copied over to a picture.
 *
 *--------------------------------------------------------------
 */

void
SetupBevelButton(
    MacButton *mbPtr,		/* Mac button. */
    ControlRef controlHandle,	/* The control to set this picture to. */
    GWorldPtr destPort,		/* Off screen GWorld. */
    GC gc,			/* The GC we are drawing into - needed for the
				 * bevel button. */
    Pixmap pixmap)		/* The pixmap we are drawing into - needed for
				 * the bevel button. */
{
    TkButton *butPtr = (TkButton *) mbPtr;
    int height, width;
    ControlButtonGraphicAlignment theAlignment;
    CGrafPtr savePort;
    Boolean portChanged = false;

    if (butPtr->image != None) {
	Tk_SizeOfImage(butPtr->image, &width, &height);
    } else {
	Tk_SizeOfBitmap(butPtr->display, butPtr->bitmap, &width, &height);
    }

    if ((butPtr->width > 0) && (butPtr->width < width)) {
	width = butPtr->width;
    }
    if ((butPtr->height > 0) && (butPtr->height < height)) {
	height = butPtr->height;
    }

    {
	portChanged = QDSwapPort(destPort, &savePort);
	mbPtr->picParams.version = -2;
	mbPtr->picParams.hRes = 0x00480000;
	mbPtr->picParams.vRes = 0x00480000;
	mbPtr->picParams.srcRect.top = 0;
	mbPtr->picParams.srcRect.left = 0;
	mbPtr->picParams.srcRect.bottom = height;
	mbPtr->picParams.srcRect.right = width;
	mbPtr->picParams.reserved1 = 0;
	mbPtr->picParams.reserved2 = 0;
	mbPtr->bevelButtonContent.contentType = kControlContentPictHandle;
	mbPtr->bevelButtonContent.u.picture = OpenCPicture(&mbPtr->picParams);
	if (!mbPtr->bevelButtonContent.u.picture) {
	    TkMacOSXDbgMsg("OpenCPicture failed");
	}
	tkPictureIsOpen = 1;

	/*
	 * TO DO - There is one case where XCopyPlane calls CopyDeepMask,
	 * which does not get recorded in the picture. So the bitmap code
	 * will fail in that case.
	 */
     }

    if (butPtr->selectImage != NULL && (butPtr->flags & SELECTED)) {
	Tk_RedrawImage(butPtr->selectImage, 0, 0, width, height, pixmap, 0, 0);
    } else if (butPtr->tristateImage != NULL && (butPtr->flags & TRISTATED)) {
	Tk_RedrawImage(butPtr->tristateImage, 0, 0, width, height, pixmap, 0,
		0);
    } else if (butPtr->image != NULL) {
	Tk_RedrawImage(butPtr->image, 0, 0, width, height, pixmap, 0, 0);
    } else {
	XSetClipOrigin(butPtr->display, gc, 0, 0);
	XCopyPlane(butPtr->display, butPtr->bitmap, pixmap, gc, 0, 0, width,
		height, 0, 0, 1);
    }

    {
	ClosePicture();
	tkPictureIsOpen = 0;
	if (portChanged) {
	    QDSwapPort(savePort, NULL);
	}
    }
    ChkErr(SetControlData, controlHandle, kControlButtonPart,
	    kControlBevelButtonContentTag,
	    sizeof(ControlButtonContentInfo),
	    (char *) &mbPtr->bevelButtonContent);

    if (butPtr->anchor == TK_ANCHOR_N) {
	theAlignment = kControlBevelButtonAlignTop;
    } else if (butPtr->anchor == TK_ANCHOR_NE) {
	theAlignment = kControlBevelButtonAlignTopRight;
    } else if (butPtr->anchor == TK_ANCHOR_E) {
	theAlignment = kControlBevelButtonAlignRight;
    } else if (butPtr->anchor == TK_ANCHOR_SE) {
	theAlignment = kControlBevelButtonAlignBottomRight;
    } else if (butPtr->anchor == TK_ANCHOR_S) {
	theAlignment = kControlBevelButtonAlignBottom;
    } else if (butPtr->anchor == TK_ANCHOR_SW) {
	theAlignment = kControlBevelButtonAlignBottomLeft;
    } else if (butPtr->anchor == TK_ANCHOR_W) {
	theAlignment = kControlBevelButtonAlignLeft;
    } else if (butPtr->anchor == TK_ANCHOR_NW) {
	theAlignment = kControlBevelButtonAlignTopLeft;
    } else if (butPtr->anchor == TK_ANCHOR_CENTER) {
	theAlignment = kControlBevelButtonAlignCenter;
    }
    ChkErr(SetControlData, controlHandle, kControlButtonPart,
	    kControlBevelButtonGraphicAlignTag,
	    sizeof(ControlButtonGraphicAlignment), (char *) &theAlignment);

    if (butPtr->compound != COMPOUND_NONE) {
	ControlButtonTextPlacement thePlacement =
		kControlBevelButtonPlaceNormally;

	if (butPtr->compound == COMPOUND_TOP) {
	    thePlacement = kControlBevelButtonPlaceBelowGraphic;
	} else if (butPtr->compound == COMPOUND_BOTTOM) {
	    thePlacement = kControlBevelButtonPlaceAboveGraphic;
	} else if (butPtr->compound == COMPOUND_LEFT) {
	    thePlacement = kControlBevelButtonPlaceToRightOfGraphic;
	} else if (butPtr->compound == COMPOUND_RIGHT) {
	    thePlacement = kControlBevelButtonPlaceToLeftOfGraphic;
	}
	ChkErr(SetControlData, controlHandle, kControlButtonPart,
		kControlBevelButtonTextPlaceTag,
		sizeof(ControlButtonTextPlacement), (char *) &thePlacement);
    }
}

/*
 *--------------------------------------------------------------
 *
 * SetUserPaneDrawProc --
 *
 *	Utility function to add a UserPaneDrawProc
 *	to a userPane control. From MoreControls code
 *	from Apple DTS.
 *
 * Results:
 *	MacOS system error.
 *
 * Side effects:
 *	The user pane gets a new UserPaneDrawProc.
 *
 *--------------------------------------------------------------
 */

OSStatus
SetUserPaneDrawProc(
    ControlRef control,
    ControlUserPaneDrawProcPtr upp)
{
    ControlUserPaneDrawUPP myControlUserPaneDrawUPP;

    myControlUserPaneDrawUPP = NewControlUserPaneDrawUPP(upp);
    return SetControlData(control, kControlNoPart,
	    kControlUserPaneDrawProcTag, sizeof(myControlUserPaneDrawUPP),
	    (Ptr) &myControlUserPaneDrawUPP);
}

/*
 *--------------------------------------------------------------
 *
 * SetUserPaneSetUpSpecialBackgroundProc --
 *
 *	Utility function to add a UserPaneBackgroundProc
 *	to a userPane control
 *
 * Results:
 *	MacOS system error.
 *
 * Side effects:
 *	The user pane gets a new UserPaneBackgroundProc.
 *
 *--------------------------------------------------------------
 */

OSStatus
SetUserPaneSetUpSpecialBackgroundProc(
    ControlRef control,
    ControlUserPaneBackgroundProcPtr upp)
{
    ControlUserPaneBackgroundUPP myControlUserPaneBackgroundUPP;

    myControlUserPaneBackgroundUPP = NewControlUserPaneBackgroundUPP(upp);
    return SetControlData(control, kControlNoPart,
	    kControlUserPaneBackgroundProcTag,
	    sizeof(myControlUserPaneBackgroundUPP),
	    (Ptr) &myControlUserPaneBackgroundUPP);
}

/*
 *--------------------------------------------------------------
 *
 * UserPaneDraw --
 *
 *	This function draws the background of the user pane that will
 *	lie under checkboxes and radiobuttons.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	The user pane gets updated to the current color.
 *
 *--------------------------------------------------------------
 */

void
UserPaneDraw(
    ControlRef control,
    ControlPartCode cpc)
{
    MacButton *mbPtr = (MacButton *)(intptr_t)GetControlReference(control);
    Rect contrlRect;
    CGrafPtr port;
    
    GetPort(&port);
    GetControlBounds(control,&contrlRect);
    TkMacOSXSetColorInPort(mbPtr->userPaneBackground, 0, NULL, port);
    EraseRect(&contrlRect);
}

/*
 *--------------------------------------------------------------
 *
 * UserPaneBackgroundProc --
 *
 *	This function sets up the background of the user pane that will
 *	lie under checkboxes and radiobuttons.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	The user pane background gets set to the current color.
 *
 *--------------------------------------------------------------
 */

void
UserPaneBackgroundProc(
    ControlHandle control,
    ControlBackgroundPtr info)
{
    MacButton * mbPtr = (MacButton *)(intptr_t)GetControlReference(control);

    if (info->colorDevice) {
	CGrafPtr port;
	
	GetPort(&port);
	TkMacOSXSetColorInPort(mbPtr->userPaneBackground, 0, NULL, port);
    }
}

/*
 *--------------------------------------------------------------
 *
 * UpdateControlColors --
 *
 *	This function will review the colors used to display
 *	a Macintosh button. If any non-standard colors are
 *	used we create a custom palette for the button, populate
 *	with the colors for the button and install the palette.
 *
 *	Under Appearance, we just set the pointer that will be
 *	used by the UserPaneDrawProc.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	The Macintosh control may get a custom palette installed.
 *
 *--------------------------------------------------------------
 */

static int
UpdateControlColors(
    MacButton *mbPtr)
{
    XColor *xcolor;
    TkButton *butPtr = (TkButton *) mbPtr;

    /*
     * Under Appearance we cannot change the background of the
     * button itself. However, the color we are setting is the color
     * of the containing userPane. This will be the color that peeks
     * around the rounded corners of the button.
     * We make this the highlightbackground rather than the background,
     * because if you color the background of a frame containing a
     * button, you usually also color the highlightbackground as well,
     * or you will get a thin grey ring around the button.
     */

    if (butPtr->type == TYPE_BUTTON) {
	xcolor = Tk_3DBorderColor(butPtr->highlightBorder);
    } else {
	xcolor = Tk_3DBorderColor(butPtr->normalBorder);
    }
    mbPtr->userPaneBackground = xcolor->pixel;

    return false;
}

/*
 *--------------------------------------------------------------
 *
 * ButtonEventProc --
 *
 *	This procedure is invoked by the Tk dispatcher for various
 *	events on buttons.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	When it gets exposed, it is redisplayed.
 *
 *--------------------------------------------------------------
 */

static void
ButtonEventProc(
    ClientData clientData,	/* Information about window. */
    XEvent *eventPtr)		/* Information about event. */
{
    TkButton *buttonPtr = (TkButton *) clientData;
    MacButton *mbPtr = (MacButton *) clientData;

    if (eventPtr->type == ActivateNotify
	    || eventPtr->type == DeactivateNotify) {
	if ((buttonPtr->tkwin == NULL) || (!Tk_IsMapped(buttonPtr->tkwin))) {
	    return;
	}
	if (eventPtr->type == ActivateNotify) {
	    mbPtr->flags |= ACTIVE;
	} else {
	    mbPtr->flags &= ~ACTIVE;
	}
	if ((buttonPtr->flags & REDRAW_PENDING) == 0) {
	    Tcl_DoWhenIdle(TkpDisplayButton, (ClientData) buttonPtr);
	    buttonPtr->flags |= REDRAW_PENDING;
	}
    }
}

/*
 *----------------------------------------------------------------------
 *
 * TkMacOSXComputeControlParams --
 *
 *	This procedure computes the various parameters used
 *	when creating a Carbon control (NewControl).
 *	These are determined by the various tk button parameters
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	Sets the control initialisation parameters
 *
 *----------------------------------------------------------------------
 */

static void
TkMacOSXComputeControlParams(
    TkButton *butPtr,
    MacControlParams *paramsPtr)
{
    paramsPtr->isBevel = 0;

    /*
     * Determine ProcID based on button type and dimensions.
     */

    switch (butPtr->type) {
	case TYPE_BUTTON:
	    if ((butPtr->image == None) && (butPtr->bitmap == None)) {
		paramsPtr->initialValue = 1;
		paramsPtr->minValue = 0;
		paramsPtr->maxValue = 1;
		paramsPtr->procID = kControlPushButtonProc;
	    } else {
		paramsPtr->initialValue = 0;
		paramsPtr->minValue = kControlBehaviorOffsetContents |
			kControlContentPictHandle;
		paramsPtr->maxValue = 1;
		if (butPtr->borderWidth <= 2) {
		    paramsPtr->procID = kControlBevelButtonSmallBevelProc;
		} else if (butPtr->borderWidth == 3) {
		    paramsPtr->procID = kControlBevelButtonNormalBevelProc;
		} else {
		    paramsPtr->procID = kControlBevelButtonLargeBevelProc;
		}
		paramsPtr->isBevel = 1;
	    }
	    break;
	case TYPE_RADIO_BUTTON:
	    if (((butPtr->image == None) && (butPtr->bitmap == None))
		|| (butPtr->indicatorOn)) {
		paramsPtr->initialValue = 1;
		paramsPtr->minValue = 0;
		paramsPtr->maxValue = MAX_VALUE;
		paramsPtr->procID = kControlRadioButtonProc;
	    } else {
		paramsPtr->initialValue = 0;
		paramsPtr->minValue = kControlBehaviorOffsetContents |
			kControlBehaviorSticky | kControlContentPictHandle;
		paramsPtr->maxValue = MAX_VALUE;
		if (butPtr->borderWidth <= 2) {
		    paramsPtr->procID = kControlBevelButtonSmallBevelProc;
		} else if (butPtr->borderWidth == 3) {
		    paramsPtr->procID = kControlBevelButtonNormalBevelProc;
		} else {
		    paramsPtr->procID = kControlBevelButtonLargeBevelProc;
		}
		paramsPtr->isBevel = 1;
	    }
	    break;
	case TYPE_CHECK_BUTTON:
	    if (((butPtr->image == None) && (butPtr->bitmap == None))
		    || (butPtr->indicatorOn)) {
		paramsPtr->initialValue = 1;
		paramsPtr->minValue = 0;
		paramsPtr->maxValue = MAX_VALUE;
		paramsPtr->procID = kControlCheckBoxProc;
	    } else {
		paramsPtr->initialValue = 0;
		paramsPtr->minValue = kControlBehaviorOffsetContents |
			kControlBehaviorSticky | kControlContentPictHandle;
		paramsPtr->maxValue = MAX_VALUE;
		if (butPtr->borderWidth <= 2) {
		    paramsPtr->procID = kControlBevelButtonSmallBevelProc;
		} else if (butPtr->borderWidth == 3) {
		    paramsPtr->procID = kControlBevelButtonNormalBevelProc;
		} else {
		    paramsPtr->procID = kControlBevelButtonLargeBevelProc;
		}
		paramsPtr->isBevel = 1;
	    }
	    break;
    }
}

/*
 *----------------------------------------------------------------------
 *
 * TkMacOSXComputeDrawParams --
 *
 *	This procedure computes the various parameters used
 *	when drawing a button
 *	These are determined by the various tk button parameters
 *
 * Results:
 *	1 if control will be used, 0 otherwise.
 *
 * Side effects:
 *	Sets the button draw parameters
 *
 *----------------------------------------------------------------------
 */

static int
TkMacOSXComputeDrawParams(
    TkButton *butPtr,
    DrawParams *dpPtr)
{
    dpPtr->hasImageOrBitmap = ((butPtr->image != NULL)
	    || (butPtr->bitmap != None));
    dpPtr->offset = (butPtr->type == TYPE_BUTTON)
	    && dpPtr->hasImageOrBitmap;
    dpPtr->border = butPtr->normalBorder;
    if ((butPtr->state == STATE_DISABLED) && (butPtr->disabledFg != NULL)) {
	dpPtr->gc = butPtr->disabledGC;
    } else if (butPtr->type == TYPE_BUTTON && butPtr->state == STATE_ACTIVE) {
	dpPtr->gc = butPtr->activeTextGC;
	dpPtr->border = butPtr->activeBorder;
    } else {
	dpPtr->gc = butPtr->normalTextGC;
    }

    if ((butPtr->flags & SELECTED) && (butPtr->state != STATE_ACTIVE)
	    && (butPtr->selectBorder != NULL) && !butPtr->indicatorOn) {
	dpPtr->border = butPtr->selectBorder;
    }

    /*
     * Override the relief specified for the button if this is a
     * checkbutton or radiobutton and there's no indicator.
     * However, don't do this in the presence of Appearance, since
     * then the bevel button will take care of the relief.
     */

    dpPtr->relief = butPtr->relief;

    if ((butPtr->type >= TYPE_CHECK_BUTTON) && !butPtr->indicatorOn) {
	if (!dpPtr->hasImageOrBitmap) {
	    dpPtr->relief = (butPtr->flags & SELECTED) ? TK_RELIEF_SUNKEN
		    : TK_RELIEF_RAISED;
	}
    }

    /*
     * Determine the draw type
     */

    if (butPtr->type == TYPE_LABEL) {
	dpPtr->drawType = DRAW_LABEL;
    } else if (butPtr->type == TYPE_BUTTON) {
	if (!dpPtr->hasImageOrBitmap) {
	    dpPtr->drawType = DRAW_CONTROL;
	} else if (butPtr->image != None) {
	    dpPtr->drawType = DRAW_BEVEL;
	} else {
	    /*
	     * TO DO - The current way the we draw bitmaps (XCopyPlane)
	     * uses CopyDeepMask in this one case. The Picture recording
	     * does not record this call, and so we can't use the
	     * Appearance bevel button here. The only case that would
	     * exercise this is if you use a bitmap, with
	     * -data & -mask specified. We should probably draw the
	     * appearance button and overprint the image in this case.
	     * This just punts and draws the old-style, ugly, button.
	     */

	    if (dpPtr->gc->clip_mask == 0) {
		dpPtr->drawType = DRAW_BEVEL;
	    } else {
		TkpClipMask *clipPtr = (TkpClipMask *) dpPtr->gc->clip_mask;

		if ((clipPtr->type == TKP_CLIP_PIXMAP) &&
			(clipPtr->value.pixmap != butPtr->bitmap)) {
		    dpPtr->drawType = DRAW_CUSTOM;
		} else {
		    dpPtr->drawType = DRAW_BEVEL;
		}
	    }
	}
    } else if (butPtr->indicatorOn) {
	dpPtr->drawType = DRAW_CONTROL;
    } else if (dpPtr->hasImageOrBitmap) {
	if (dpPtr->gc->clip_mask == 0) {
	    dpPtr->drawType = DRAW_BEVEL;
	} else {
	    TkpClipMask *clipPtr = (TkpClipMask*) dpPtr->gc->clip_mask;

	    if ((clipPtr->type == TKP_CLIP_PIXMAP) &&
		    (clipPtr->value.pixmap != butPtr->bitmap)) {
		dpPtr->drawType = DRAW_CUSTOM;
	    } else {
		dpPtr->drawType = DRAW_BEVEL;
	    }
	}
    } else {
	dpPtr->drawType = DRAW_CUSTOM;
    }

    if ((dpPtr->drawType == DRAW_CONTROL) || (dpPtr->drawType == DRAW_BEVEL)) {
	return 1;
    } else {
	return 0;
    }
}
