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96 lines
3.2 KiB
C++
96 lines
3.2 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 Graphite integration 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) 2011
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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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_GRAPHITESHAPER_H
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#define GFX_GRAPHITESHAPER_H
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#include "gfxTypes.h"
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#include "gfxFont.h"
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#include "nsDataHashtable.h"
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#include "nsHashKeys.h"
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struct gr_face;
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struct gr_font;
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struct gr_segment;
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class gfxGraphiteShaper : public gfxFontShaper {
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public:
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gfxGraphiteShaper(gfxFont *aFont);
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virtual ~gfxGraphiteShaper();
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virtual bool ShapeWord(gfxContext *aContext,
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gfxShapedWord *aShapedWord,
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const PRUnichar *aText);
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const void* GetTable(PRUint32 aTag, size_t *aLength);
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static void Shutdown();
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struct CallbackData {
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gfxFont *mFont;
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gfxGraphiteShaper *mShaper;
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gfxContext *mContext;
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};
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struct TableRec {
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hb_blob_t *mBlob;
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const void *mData;
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PRUint32 mLength;
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};
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protected:
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nsresult SetGlyphsFromSegment(gfxShapedWord *aShapedWord,
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gr_segment *aSegment);
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gr_face *mGrFace;
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gr_font *mGrFont;
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CallbackData mCallbackData;
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nsDataHashtable<nsUint32HashKey,TableRec> mTables;
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// Whether the font implements GetGlyphWidth, or we should read tables
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// directly to get ideal widths
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bool mUseFontGlyphWidths;
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// Convert HTML 'lang' (BCP47) to Graphite language code
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static PRUint32 GetGraphiteTagForLang(const nsCString& aLang);
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static nsTHashtable<nsUint32HashKey> sLanguageTags;
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};
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#endif /* GFX_GRAPHITESHAPER_H */
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