gecko-dev/gfx/thebes/gfxDWriteFonts.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 Mozilla Foundation code.
*
* The Initial Developer of the Original Code is Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2010
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Bas Schouten <bschouten@mozilla.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
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* decision by deleting the provisions above and replace them with the notice
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* the provisions above, a recipient may use your version of this file under
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* ***** END LICENSE BLOCK ***** */
#ifndef GFX_WINDOWSDWRITEFONTS_H
#define GFX_WINDOWSDWRITEFONTS_H
#include <dwrite.h>
#include "gfxFont.h"
#include "gfxUserFontSet.h"
#include "cairo-win32.h"
#include "nsDataHashtable.h"
#include "nsHashKeys.h"
/**
* \brief Class representing a font face for a font entry.
*/
class gfxDWriteFont : public gfxFont
{
public:
gfxDWriteFont(gfxFontEntry *aFontEntry,
const gfxFontStyle *aFontStyle,
PRBool aNeedsBold = PR_FALSE,
AntialiasOption = kAntialiasDefault);
~gfxDWriteFont();
virtual gfxFont* CopyWithAntialiasOption(AntialiasOption anAAOption);
virtual nsString GetUniqueName();
virtual const gfxFont::Metrics& GetMetrics();
virtual PRUint32 GetSpaceGlyph();
virtual PRBool SetupCairoFont(gfxContext *aContext);
virtual PRBool IsValid() { return mFontFace != NULL; }
gfxFloat GetAdjustedSize() const { return mAdjustedSize; }
IDWriteFontFace *GetFontFace() { return mFontFace.get(); }
// override gfxFont table access function to bypass gfxFontEntry cache,
// use DWrite API to get direct access to system font data
virtual hb_blob_t *GetFontTable(PRUint32 aTag);
protected:
virtual void CreatePlatformShaper();
void ComputeMetrics();
cairo_font_face_t *CairoFontFace();
cairo_scaled_font_t *CairoScaledFont();
static void DestroyBlobFunc(void* userArg);
nsRefPtr<IDWriteFontFace> mFontFace;
cairo_font_face_t *mCairoFontFace;
cairo_scaled_font_t *mCairoScaledFont;
gfxFont::Metrics mMetrics;
PRBool mNeedsOblique;
PRBool mNeedsBold;
};
#endif