| /* |
| * Copyright 2015 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef GrAtlasTextContext_DEFINED |
| #define GrAtlasTextContext_DEFINED |
| |
| #include "GrAtlasTextBlob.h" |
| #include "GrDistanceFieldAdjustTable.h" |
| #include "GrGeometryProcessor.h" |
| #include "SkTextBlobRunIterator.h" |
| |
| #ifdef GR_TEST_UTILS |
| #include "GrBatchTest.h" |
| #endif |
| |
| class GrDrawOp; |
| class GrRenderTargetContext; |
| class GrPipelineBuilder; |
| class GrTextBlobCache; |
| class SkGlyph; |
| |
| /* |
| * Renders text using some kind of an atlas, ie BitmapText or DistanceField text |
| */ |
| class GrAtlasTextContext { |
| public: |
| static GrAtlasTextContext* Create(); |
| |
| bool canDraw(const SkPaint&, const SkMatrix& viewMatrix, const SkSurfaceProps&, |
| const GrShaderCaps&); |
| void drawText(GrContext*, GrRenderTargetContext*, const GrClip&, const GrPaint&, const SkPaint&, |
| const SkMatrix& viewMatrix, const SkSurfaceProps&, const char text[], |
| size_t byteLength, SkScalar x, SkScalar y, |
| const SkIRect& regionClipBounds); |
| void drawPosText(GrContext*, GrRenderTargetContext*, const GrClip&, const GrPaint&, |
| const SkPaint&, const SkMatrix& viewMatrix, const SkSurfaceProps&, |
| const char text[], size_t byteLength, |
| const SkScalar pos[], int scalarsPerPosition, |
| const SkPoint& offset, const SkIRect& regionClipBounds); |
| void drawTextBlob(GrContext*, GrRenderTargetContext*, const GrClip&, const SkPaint&, |
| const SkMatrix& viewMatrix, const SkSurfaceProps&, const SkTextBlob*, |
| SkScalar x, SkScalar y, |
| SkDrawFilter*, const SkIRect& clipBounds); |
| |
| private: |
| GrAtlasTextContext(); |
| |
| // sets up the descriptor on the blob and returns a detached cache. Client must attach |
| inline static GrColor ComputeCanonicalColor(const SkPaint&, bool lcd); |
| // Determines if we need to use fake gamma (and contrast boost): |
| inline static uint32_t ComputeScalerContextFlags(GrRenderTargetContext*); |
| static void RegenerateTextBlob(GrAtlasTextBlob* bmp, |
| GrAtlasGlyphCache*, |
| const GrShaderCaps&, |
| const SkPaint& skPaint, GrColor, |
| uint32_t scalerContextFlags, |
| const SkMatrix& viewMatrix, |
| const SkSurfaceProps&, |
| const SkTextBlob* blob, SkScalar x, SkScalar y, |
| SkDrawFilter* drawFilter); |
| inline static bool HasLCD(const SkTextBlob*); |
| |
| static inline GrAtlasTextBlob* CreateDrawTextBlob(GrTextBlobCache*, |
| GrAtlasGlyphCache*, const GrShaderCaps&, |
| const GrPaint&, |
| const SkPaint&, |
| uint32_t scalerContextFlags, |
| const SkMatrix& viewMatrix, |
| const SkSurfaceProps&, |
| const char text[], size_t byteLength, |
| SkScalar x, SkScalar y); |
| static inline GrAtlasTextBlob* CreateDrawPosTextBlob(GrTextBlobCache*, GrAtlasGlyphCache*, |
| const GrShaderCaps&, |
| const GrPaint&, |
| const SkPaint&, |
| uint32_t scalerContextFlags, |
| const SkMatrix& viewMatrix, |
| const SkSurfaceProps&, |
| const char text[], size_t byteLength, |
| const SkScalar pos[], |
| int scalarsPerPosition, |
| const SkPoint& offset); |
| const GrDistanceFieldAdjustTable* dfAdjustTable() const { return fDistanceAdjustTable.get(); } |
| |
| sk_sp<const GrDistanceFieldAdjustTable> fDistanceAdjustTable; |
| |
| #ifdef GR_TEST_UTILS |
| static const uint32_t kTextBlobBatchScalerContextFlags = |
| SkPaint::kFakeGammaAndBoostContrast_ScalerContextFlags; |
| DRAW_BATCH_TEST_FRIEND(TextBlobBatch); |
| #endif |
| }; |
| |
| #endif |