blob: 61d6d5b7b13c41f3fa593a6e7b4eff97bde30935 [file] [log] [blame]
/*
* Copyright 2014 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkScalarContext_win_dw_DEFINED
#define SkScalarContext_win_dw_DEFINED
#include "include/core/SkScalar.h"
#include "include/core/SkTypes.h"
#include "src/core/SkScalerContext.h"
#include "src/ports/SkTypeface_win_dw.h"
#include <dwrite.h>
#include <dwrite_2.h>
class SkGlyph;
class SkDescriptor;
class SkScalerContext_DW : public SkScalerContext {
public:
SkScalerContext_DW(sk_sp<DWriteFontTypeface>,
const SkScalerContextEffects&,
const SkDescriptor*);
~SkScalerContext_DW() override;
protected:
unsigned generateGlyphCount() override;
bool generateAdvance(SkGlyph* glyph) override;
void generateMetrics(SkGlyph* glyph) override;
void generateImage(const SkGlyph& glyph) override;
bool generatePath(SkGlyphID glyph, SkPath* path) override;
void generateFontMetrics(SkFontMetrics*) override;
private:
static void BilevelToBW(const uint8_t* SK_RESTRICT src, const SkGlyph& glyph);
template<bool APPLY_PREBLEND>
static void GrayscaleToA8(const uint8_t* SK_RESTRICT src,
const SkGlyph& glyph,
const uint8_t* table8);
template<bool APPLY_PREBLEND>
static void RGBToA8(const uint8_t* SK_RESTRICT src,
const SkGlyph& glyph,
const uint8_t* table8);
template<bool APPLY_PREBLEND, bool RGB>
static void RGBToLcd16(const uint8_t* SK_RESTRICT src, const SkGlyph& glyph,
const uint8_t* tableR, const uint8_t* tableG, const uint8_t* tableB);
const void* drawDWMask(const SkGlyph& glyph,
DWRITE_RENDERING_MODE renderingMode,
DWRITE_TEXTURE_TYPE textureType);
HRESULT getBoundingBox(SkGlyph* glyph,
DWRITE_RENDERING_MODE renderingMode,
DWRITE_TEXTURE_TYPE textureType,
RECT* bbox);
bool isColorGlyph(const SkGlyph& glyph);
bool isPngGlyph(const SkGlyph& glyph);
DWriteFontTypeface* getDWriteTypeface() {
return static_cast<DWriteFontTypeface*>(this->getTypeface());
}
bool getColorGlyphRun(const SkGlyph& glyph, IDWriteColorGlyphRunEnumerator** colorGlyph);
void generateColorMetrics(SkGlyph* glyph);
void generateColorGlyphImage(const SkGlyph& glyph);
void generatePngMetrics(SkGlyph* glyph);
void generatePngGlyphImage(const SkGlyph& glyph);
SkTDArray<uint8_t> fBits;
/** The total matrix without the text height scale. */
SkMatrix fSkXform;
/** The total matrix without the text height scale. */
DWRITE_MATRIX fXform;
/** The text size to render with. */
SkScalar fTextSizeRender;
/** The text size to measure with. */
SkScalar fTextSizeMeasure;
int fGlyphCount;
DWRITE_RENDERING_MODE fRenderingMode;
DWRITE_TEXTURE_TYPE fTextureType;
DWRITE_MEASURING_MODE fMeasuringMode;
DWRITE_TEXT_ANTIALIAS_MODE fAntiAliasMode;
DWRITE_GRID_FIT_MODE fGridFitMode;
bool fIsColorFont;
};
#endif