tkmacbutton.c

linux系统下的音频通信

/* 
 * tkMacButton.c --
 *
 *	This file implements the Macintosh specific portion of the
 *	button widgets.
 *
 * Copyright (c) 1996-1997 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: @(#) tkMacButton.c 1.18 97/11/20 18:27:21
 */

#include "tkButton.h"
#include "tkMacInt.h"
#include <Controls.h>
#include <LowMem.h>
#include <Appearance.h>


#include <ToolUtils.h>

/*
 * 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

/*
 * The following structures are used to draw our controls.  Rather than
 * having many Mac controls we just use one control of each type and
 * reuse them for all Tk widgets.  When the windowRef variable is NULL
 * it means none of the data structures have been allocated.
 */

static WindowRef windowRef = NULL;
static CWindowRecord windowRecord;
static ControlRef buttonHandle;
static ControlRef checkHandle;
static ControlRef radioHandle;
static ControlRef smallBevelHandle;
static ControlRef smallStickyBevelHandle;
static ControlRef medBevelHandle;
static ControlRef medStickyBevelHandle;
static ControlRef largeBevelHandle;
static ControlRef largeStickyBevelHandle;

/*
 * These are used to store the image content for
 * beveled buttons - i.e. buttons with images.
 */
 
static ControlButtonContentInfo bevelButtonContent;
static OpenCPicParams picParams;

static CCTabHandle buttonTabHandle;
static CCTabHandle checkTabHandle;
static CCTabHandle radioTabHandle;
static PixMapHandle oldPixPtr;

/*
 * These functions are used when Appearance is present.
 * By embedding all our controls in a userPane control,
 * we can color the background of the text in radiobuttons
 * and checkbuttons.  Thanks to Peter Gontier of Apple DTS
 * for help on this one.
 */

static ControlRef userPaneHandle;
static RGBColor gUserPaneBackground = { ~0, ~0, ~0};
static pascal OSErr SetUserPaneDrawProc(ControlRef control,
	ControlUserPaneDrawProcPtr upp);
static pascal OSErr SetUserPaneSetUpSpecialBackgroundProc(ControlRef control,
	ControlUserPaneBackgroundProcPtr upp);
static pascal void UserPaneDraw(ControlRef control, ControlPartCode cpc);
static pascal void UserPaneBackgroundProc(ControlHandle,
	ControlBackgroundPtr info);

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

static int	UpdateControlColors _ANSI_ARGS_((TkButton *butPtr,
			    ControlRef controlHandle, CCTabHandle ccTabHandle,
			    RGBColor *saveColorPtr));
static void	DrawBufferedControl _ANSI_ARGS_((TkButton *butPtr,
		    GWorldPtr destPort, GC gc, Pixmap pixmap));
static void	InitSampleControls();
static void	SetupBevelButton _ANSI_ARGS_((TkButton *butPtr,
		    ControlRef controlHandle, 
		    GWorldPtr destPort, GC gc, Pixmap pixmap));
static void	ChangeBackgroundWindowColor _ANSI_ARGS_((
			    WindowRef macintoshWindow, RGBColor rgbColor,
			    RGBColor *oldColor));
static void	ButtonExitProc _ANSI_ARGS_((ClientData clientData));

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

TkClassProcs tkpButtonProcs = { 
    NULL,			/* createProc. */
    TkButtonWorldChanged,	/* geometryProc. */
    NULL			/* modalProc. */
};

/*
 *----------------------------------------------------------------------
 *
 * 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)
{
    return (TkButton *) ckalloc(sizeof(TkButton));
}

/*
 *----------------------------------------------------------------------
 *
 * 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. */
{
    TkButton *butPtr = (TkButton *) clientData;
    Pixmap pixmap;
    GC gc;
    Tk_3DBorder border;
    int x = 0;			/* Initialization only needed to stop
				 * compiler warning. */
    int y, relief;
    register Tk_Window tkwin = butPtr->tkwin;
    int width, height;
    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. */
    int hasImageOrBitmap;
    CGrafPtr saveWorld;
    GDHandle saveDevice;
    GWorldPtr destPort;
    int drawType, borderWidth;
    
    GetGWorld(&saveWorld, &saveDevice);

    butPtr->flags &= ~REDRAW_PENDING;
    if ((butPtr->tkwin == NULL) || !Tk_IsMapped(tkwin)) {
	return;
    }

    /*
     * 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));

    hasImageOrBitmap = ((butPtr->image != NULL) || (butPtr->bitmap != None));
    offset = (butPtr->type == TYPE_BUTTON) && hasImageOrBitmap;

    border = butPtr->normalBorder;
    if ((butPtr->state == tkDisabledUid) && (butPtr->disabledFg != NULL)) {
	gc = butPtr->disabledGC;
    } else if ((butPtr->type == TYPE_BUTTON)
	    && (butPtr->state == tkActiveUid)) {
	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.
     * However, don't do this in the presence of Appearance, since
     * then the bevel button will take care of the relief.
     */

    relief = butPtr->relief;

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

    /*
     * See the comment in UpdateControlColors as to why we use the 
     * highlightbackground for the border of Macintosh buttons.
     */
     
    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);
    }
   
    if (butPtr->type == TYPE_LABEL) {
	drawType = DRAW_LABEL;
    } else if (butPtr->type == TYPE_BUTTON) {
	if (!hasImageOrBitmap) {
	    drawType = DRAW_CONTROL;
	} else if (butPtr->image != None) {
	    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 (gc->clip_mask == 0) {
	        drawType = DRAW_BEVEL;
	    } else {
	        TkpClipMask *clipPtr = (TkpClipMask*) gc->clip_mask;
	        if ((clipPtr->type == TKP_CLIP_PIXMAP) &&
	            (clipPtr->value.pixmap != butPtr->bitmap)) {
	            drawType = DRAW_CUSTOM;
	        } else {
	            drawType = DRAW_BEVEL;
	        }
	    }
	}
    } else {
	if (butPtr->indicatorOn) {
	    drawType = DRAW_CONTROL;
	} else if (hasImageOrBitmap) {
	    if (gc->clip_mask == 0) {
	        drawType = DRAW_BEVEL;
	    } else {
	        TkpClipMask *clipPtr = (TkpClipMask*) gc->clip_mask;
	        if ((clipPtr->type == TKP_CLIP_PIXMAP) &&
	            (clipPtr->value.pixmap != butPtr->bitmap)) {
	            drawType = DRAW_CUSTOM;
	        } else {
	            drawType = DRAW_BEVEL;
	        }
	    }
	} else {
	    drawType = DRAW_CUSTOM;
	}
    }

    /*
     * 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 ((drawType == DRAW_CONTROL) || 
            ((drawType == DRAW_BEVEL) && TkMacHaveAppearance())) {
	borderWidth = 0;
	
	/*
	 * This part uses Macintosh rather than Tk calls to draw
	 * to the screen.  Make sure the ports etc. are set correctly.
	 */
	
	destPort = TkMacGetDrawablePort(pixmap);
	SetGWorld(destPort, NULL);
	DrawBufferedControl(butPtr, destPort, gc, pixmap);
    }

    if ((drawType == DRAW_CUSTOM) || (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 ((drawType == DRAW_BEVEL) && TkMacHaveAppearance()) {
        /* Empty Body */
    } else 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;

	x += offset;
	y += offset;
	if (relief == TK_RELIEF_RAISED) {
	    x -= offset;
	    y -= offset;
	} else 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 {
	TkComputeAnchor(butPtr->anchor, tkwin, butPtr->padX, butPtr->padY,
		butPtr->indicatorSpace + butPtr->textWidth, butPtr->textHeight,
		&x, &y);

	x += butPtr->indicatorSpace;

	Tk_DrawTextLayout(butPtr->display, pixmap, gc, butPtr->textLayout,
		x, y, 0, -1);
	y += butPtr->textHeight/2;
    }

    /*
     * 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) {
	int inset = butPtr->highlightWidth;
	Tk_Draw3DRectangle(tkwin, pixmap, border, inset, inset,
		Tk_Width(tkwin) - 2*inset, Tk_Height(tkwin) - 2*inset,
		butPtr->borderWidth, relief);
    }

    /*
     * 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);

    SetGWorld(saveWorld, saveDevice);
}

/*
 *----------------------------------------------------------------------
 *
 * 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;
    Tk_FontMetrics fm;


    /*
     * First figure out the size of the contents of the button.
     */
     
    butPtr->indicatorSpace = 0;
    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 = height;
	    if (butPtr->type == TYPE_CHECK_BUTTON) {
		butPtr->indicatorDiameter = (65*height)/100;
	    } else {
		butPtr->indicatorDiameter = (75*height)/100;
	    }
	}
    } 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) {