mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-01 14:45:29 +00:00
59 lines
2.0 KiB
C++
59 lines
2.0 KiB
C++
/* -*- 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"
|
|
|
|
struct gr_face;
|
|
struct gr_font;
|
|
struct gr_segment;
|
|
|
|
class gfxGraphiteShaper : public gfxFontShaper {
|
|
public:
|
|
explicit gfxGraphiteShaper(gfxFont *aFont);
|
|
virtual ~gfxGraphiteShaper();
|
|
|
|
virtual bool ShapeText(gfxContext *aContext,
|
|
const char16_t *aText,
|
|
uint32_t aOffset,
|
|
uint32_t aLength,
|
|
int32_t aScript,
|
|
bool aVertical,
|
|
gfxShapedText *aShapedText);
|
|
|
|
static void Shutdown();
|
|
|
|
protected:
|
|
nsresult SetGlyphsFromSegment(gfxContext *aContext,
|
|
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;
|
|
gfxGraphiteShaper *mShaper;
|
|
gfxContext *mContext;
|
|
};
|
|
|
|
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 */
|