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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef GFX_GRAPHITESHAPER_H
#define GFX_GRAPHITESHAPER_H
#include "gfxFont.h"
#include "mozilla/gfx/2D.h"
struct gr_face;
struct gr_font;
struct gr_segment;
class gfxGraphiteShaper : public gfxFontShaper {
public:
explicit gfxGraphiteShaper(gfxFont *aFont);
virtual ~gfxGraphiteShaper();
virtual bool ShapeText(DrawTarget *aDrawTarget,
const char16_t *aText,
uint32_t aOffset,
uint32_t aLength,
Script aScript,
bool aVertical,
gfxShapedText *aShapedText);
static void Shutdown();
protected:
nsresult SetGlyphsFromSegment(DrawTarget *aDrawTarget,
gfxShapedText *aShapedText,
uint32_t aOffset,
uint32_t aLength,
const char16_t *aText,
gr_segment *aSegment);
static float GrGetAdvance(const void* appFontHandle, uint16_t glyphid);
gr_face *mGrFace; // owned by the font entry; shaper must call
// gfxFontEntry::ReleaseGrFace when finished with it
gr_font *mGrFont; // owned by the shaper itself
struct CallbackData {
gfxFont* mFont;
mozilla::gfx::DrawTarget* mDrawTarget;
};
CallbackData mCallbackData;
bool mFallbackToSmallCaps; // special fallback for the petite-caps case
// Convert HTML 'lang' (BCP47) to Graphite language code
static uint32_t GetGraphiteTagForLang(const nsCString& aLang);
static nsTHashtable<nsUint32HashKey> *sLanguageTags;
};
#endif /* GFX_GRAPHITESHAPER_H */
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