gecko/gfx/thebes/public/gfxCoreTextFonts.h

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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is thebes gfx code.
*
* The Initial Developer of the Original Code is Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2006-2009
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Vladimir Vukicevic <vladimir@pobox.com>
* Masayuki Nakano <masayuki@d-toybox.com>
* John Daggett <jdaggett@mozilla.com>
* Jonathan Kew <jfkthame@gmail.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef GFX_CORETEXTFONTS_H
#define GFX_CORETEXTFONTS_H
#include "cairo.h"
#include "gfxTypes.h"
#include "gfxFont.h"
#include "gfxFontUtils.h"
#include "gfxPlatform.h"
#include <Carbon/Carbon.h>
class MacOSFontEntry;
class gfxCoreTextFont : public gfxFont {
public:
gfxCoreTextFont(MacOSFontEntry *aFontEntry,
const gfxFontStyle *fontStyle, PRBool aNeedsBold);
virtual ~gfxCoreTextFont();
virtual const gfxFont::Metrics& GetMetrics() {
NS_ASSERTION(mHasMetrics == PR_TRUE, "metrics not initialized");
return mMetrics;
}
float GetCharWidth(PRUnichar c, PRUint32 *aGlyphID = nsnull);
float GetCharHeight(PRUnichar c);
ATSFontRef GetATSFont() {
return mATSFont;
}
CTFontRef GetCTFont() {
return mCTFont;
}
CFDictionaryRef GetAttributesDictionary() {
return mAttributesDict;
}
cairo_font_face_t *CairoFontFace() {
return mFontFace;
}
cairo_scaled_font_t *CairoScaledFont() {
return mScaledFont;
}
virtual nsString GetUniqueName() {
return GetName();
}
virtual PRUint32 GetSpaceGlyph() {
return mSpaceGlyph;
}
PRBool TestCharacterMap(PRUint32 aCh);
MacOSFontEntry* GetFontEntry();
// clean up static objects that may have been cached
static void Shutdown();
static CTFontRef CreateCTFontWithDisabledLigatures(ATSFontRef aFontRef, CGFloat aSize);
protected:
const gfxFontStyle *mFontStyle;
ATSFontRef mATSFont;
CTFontRef mCTFont;
CFDictionaryRef mAttributesDict;
PRBool mHasMetrics;
nsString mUniqueName;
cairo_font_face_t *mFontFace;
cairo_scaled_font_t *mScaledFont;
gfxFont::Metrics mMetrics;
gfxFloat mAdjustedSize;
PRUint32 mSpaceGlyph;
void InitMetrics();
virtual void InitTextRun(gfxTextRun *aTextRun,
const PRUnichar *aString,
PRUint32 aRunStart,
PRUint32 aRunLength);
nsresult SetGlyphsFromRun(gfxTextRun *aTextRun,
CTRunRef aCTRun,
PRInt32 aStringOffset,
PRInt32 aLayoutStart,
PRInt32 aLayoutLength);
virtual PRBool SetupCairoFont(gfxContext *aContext);
static void CreateDefaultFeaturesDescriptor();
static CTFontDescriptorRef GetDefaultFeaturesDescriptor() {
if (sDefaultFeaturesDescriptor == NULL)
CreateDefaultFeaturesDescriptor();
return sDefaultFeaturesDescriptor;
}
// cached font descriptor, created the first time it's needed
static CTFontDescriptorRef sDefaultFeaturesDescriptor;
// cached descriptor for adding disable-ligatures setting to a font
static CTFontDescriptorRef sDisableLigaturesDescriptor;
};
#endif /* GFX_CORETEXTFONTS_H */