зеркало из https://github.com/mozilla/pjs.git
128 строки
4.8 KiB
C++
128 строки
4.8 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) 2005-2010
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Stuart Parmenter <stuart@mozilla.com>
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* Masayuki Nakano <masayuki@d-toybox.com>
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* John Daggett <jdaggett@mozilla.com>
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* Jonathan Kew <jfkthame@gmail.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_GDIFONT_H
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#define GFX_GDIFONT_H
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#include "gfxFont.h"
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#include "gfxGDIFontList.h"
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#include "nsDataHashtable.h"
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#include "nsHashKeys.h"
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#include "cairo.h"
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class gfxGDIFont : public gfxFont
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{
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public:
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gfxGDIFont(GDIFontEntry *aFontEntry,
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const gfxFontStyle *aFontStyle,
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bool aNeedsBold,
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AntialiasOption anAAOption = kAntialiasDefault);
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virtual ~gfxGDIFont();
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HFONT GetHFONT() { if (!mMetrics) Initialize(); return mFont; }
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gfxFloat GetAdjustedSize() { if (!mMetrics) Initialize(); return mAdjustedSize; }
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cairo_font_face_t *CairoFontFace() { return mFontFace; }
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cairo_scaled_font_t *CairoScaledFont() { return mScaledFont; }
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/* overrides for the pure virtual methods in gfxFont */
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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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/* 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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/* required for MathML to suppress effects of ClearType "padding" */
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virtual gfxFont* CopyWithAntialiasOption(AntialiasOption anAAOption);
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virtual bool ProvidesGlyphWidths() { return true; }
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// get hinted glyph width in pixels as 16.16 fixed-point value
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virtual PRInt32 GetGlyphWidth(gfxContext *aCtx, PRUint16 aGID);
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virtual void SizeOfExcludingThis(nsMallocSizeOfFun aMallocSizeOf,
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FontCacheSizes* aSizes) const;
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virtual void SizeOfIncludingThis(nsMallocSizeOfFun aMallocSizeOf,
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FontCacheSizes* aSizes) const;
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virtual FontType GetType() const { return FONT_TYPE_GDI; }
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protected:
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virtual void CreatePlatformShaper();
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/* override to check for uniscribe failure and fall back to GDI */
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virtual bool ShapeWord(gfxContext *aContext,
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gfxShapedWord *aShapedWord,
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const PRUnichar *aString,
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bool aPreferPlatformShaping = false);
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void Initialize(); // creates metrics and Cairo fonts
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void FillLogFont(LOGFONTW& aLogFont, gfxFloat aSize);
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// mPlatformShaper is used for the GDI shaper, mUniscribeShaper
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// for the Uniscribe version if needed
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nsAutoPtr<gfxFontShaper> mUniscribeShaper;
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HFONT mFont;
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cairo_font_face_t *mFontFace;
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Metrics *mMetrics;
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PRUint32 mSpaceGlyph;
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bool mNeedsBold;
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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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};
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#endif /* GFX_GDIFONT_H */
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