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/*
* tkMacOSXFont.h --
*
* Private functions and structs exported from tkMacOSXFont.c
* for use in ATSU specific extensions.
*
* Copyright 2002-2004 Benjamin Riefenstahl, Benjamin.Riefenstahl@epost.de
*
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
* RCS: @(#) $Id: tkMacOSXFont.h,v 1.2 2006/03/24 14:58:01 das Exp $
*/
#ifndef TKMACOSXFONT_H
#define TKMACOSXFONT_H 1
#include "tkFont.h"
#include <Carbon/Carbon.h>
/*
* Switches
*/
#define TK_MAC_USE_QUARZ 1
/*
* Types
*/
/*
* The following structure represents our Macintosh-specific implementation
* of a font object.
*/
typedef struct {
TkFont font; /* Stuff used by generic font package. Must
* be first in structure. */
/*
* The ATSU view of the font and other text properties. Used for drawing
* and measuring.
*/
ATSUFontID atsuFontId; /* == FMFont. */
ATSUTextLayout atsuLayout; /* ATSU layout object, representing the whole
* text that ATSU sees with some option
* bits. */
ATSUStyle atsuStyle; /* ATSU style object, representing a run of
* text with the same properties. */
/*
* The QuickDraw view of the font. Used to configure controls.
*/
FMFontFamily qdFont; /* == FMFontFamilyId, Carbon replacement for
* QD face numbers. */
short qdSize; /* Font size in points. */
short qdStyle; /* QuickDraw style bits. */
} TkMacOSXFont;
#if TK_MAC_USE_QUARZ
/*
* To use Quarz drawing we need some additional context. FIXME: We would
* have liked to use the similar functions from tkMacOSXDraw.c to do this
* (TkMacOSXSetUpCGContext(), etc), but a) those don't quite work for us
* (e.g. we can't use a simple upside-down coordinate system transformation,
* as we don't want upside-down characters ;-), and b) we don't have the
* necessary context information (MacDrawable), that we need as parameter for
* those functions. So I just cobbled together a limited edition, getting
* the necessary parameters from the current QD GraphPort.
*/
typedef struct {
CGContextRef cgContext; /* Quarz context. */
CGrafPtr graphPort; /* QD graph port to which this belongs.
* Needed for releasing cgContext. */
Rect portRect; /* Cached size of port. */
} TkMacOSXFontDrawingContext;
#else /* ! TK_MAC_USE_QUARZ */
/*
* Just a dummy, so we don't have to #ifdef the parameter lists of functions
* that use this.
*/
typedef struct {} DrawingContext;
#endif /* ? TK_MAC_USE_QUARZ */
/*
* Function prototypes
*/
MODULE_SCOPE void TkMacOSXLayoutSetString(const TkMacOSXFont * fontPtr,
const TkMacOSXFontDrawingContext *drawingContextPtr,
const UniChar * uchars, int ulen);
MODULE_SCOPE void TkMacOSXInitControlFontStyle(Tk_Font tkfont,
ControlFontStylePtr fsPtr);
#if TK_MAC_USE_QUARZ
MODULE_SCOPE void TkMacOSXQuarzStartDraw(
TkMacOSXFontDrawingContext * contextPtr);
MODULE_SCOPE void TkMacOSXQuarzEndDraw(
TkMacOSXFontDrawingContext * contextPtr);
#endif /* TK_MAC_USE_QUARZ */
#endif /*TKMACOSXFONT_H*/
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