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131 lines
4.2 KiB
C++
131 lines
4.2 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla Foundation code.
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*
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* The Initial Developer of the Original Code is Mozilla Foundation.
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* Portions created by the Initial Developer are Copyright (C) 2010
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Bas Schouten <bschouten@mozilla.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef GFX_WINDOWSDWRITEFONTS_H
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#define GFX_WINDOWSDWRITEFONTS_H
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#include <dwrite.h>
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#include "gfxFont.h"
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#include "gfxUserFontSet.h"
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#include "cairo-win32.h"
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#include "nsDataHashtable.h"
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#include "nsHashKeys.h"
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/**
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* \brief Class representing a font face for a font entry.
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*/
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class gfxDWriteFont : public gfxFont
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{
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public:
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gfxDWriteFont(gfxFontEntry *aFontEntry,
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const gfxFontStyle *aFontStyle,
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bool aNeedsBold = false,
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AntialiasOption = kAntialiasDefault);
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~gfxDWriteFont();
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virtual gfxFont* CopyWithAntialiasOption(AntialiasOption anAAOption);
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virtual const gfxFont::Metrics& GetMetrics();
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virtual PRUint32 GetSpaceGlyph();
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virtual bool SetupCairoFont(gfxContext *aContext);
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virtual bool IsValid();
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gfxFloat GetAdjustedSize() {
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return mAdjustedSize;
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}
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IDWriteFontFace *GetFontFace();
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/* override Measure to add padding for antialiasing */
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virtual RunMetrics Measure(gfxTextRun *aTextRun,
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PRUint32 aStart, PRUint32 aEnd,
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BoundingBoxType aBoundingBoxType,
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gfxContext *aContextForTightBoundingBox,
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Spacing *aSpacing);
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// override gfxFont table access function to bypass gfxFontEntry cache,
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// use DWrite API to get direct access to system font data
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virtual hb_blob_t *GetFontTable(PRUint32 aTag);
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virtual bool ProvidesGlyphWidths();
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virtual PRInt32 GetGlyphWidth(gfxContext *aCtx, PRUint16 aGID);
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protected:
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friend class gfxDWriteShaper;
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virtual void CreatePlatformShaper();
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bool GetFakeMetricsForArialBlack(DWRITE_FONT_METRICS *aFontMetrics);
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void ComputeMetrics(AntialiasOption anAAOption);
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bool HasBitmapStrikeForSize(PRUint32 aSize);
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cairo_font_face_t *CairoFontFace();
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cairo_scaled_font_t *CairoScaledFont();
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gfxFloat MeasureGlyphWidth(PRUint16 aGlyph);
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static void DestroyBlobFunc(void* userArg);
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DWRITE_MEASURING_MODE GetMeasuringMode();
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bool GetForceGDIClassic();
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nsRefPtr<IDWriteFontFace> mFontFace;
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cairo_font_face_t *mCairoFontFace;
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cairo_scaled_font_t *mCairoScaledFont;
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gfxFont::Metrics *mMetrics;
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// cache of glyph widths in 16.16 fixed-point pixels
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nsDataHashtable<nsUint32HashKey,PRInt32> mGlyphWidths;
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bool mNeedsOblique;
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bool mNeedsBold;
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bool mUseSubpixelPositions;
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bool mAllowManualShowGlyphs;
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};
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#endif
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