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      1 /*
      2  * Copyright 2017 Google Inc.
      3  *
      4  * Use of this source code is governed by a BSD-style license that can be
      5  * found in the LICENSE file.
      6  */
      7 
      8 #ifndef SkInternalAtlasTextContext_DEFINED
      9 #define SkInternalAtlasTextContext_DEFINED
     10 
     11 #include "GrDeferredUpload.h"
     12 #include "SkArenaAlloc.h"
     13 #include "SkArenaAllocList.h"
     14 #include "SkRefCnt.h"
     15 
     16 class GrContext;
     17 class GrStrikeCache;
     18 class GrTextBlobCache;
     19 
     20 class SkAtlasTextRenderer;
     21 class SkMatrix;
     22 
     23 /**
     24  * The implementation of SkAtlasTextContext. This exists to hide the details from the public class.
     25  * and to be able to use other private types.
     26  */
     27 class SkInternalAtlasTextContext : public GrDeferredUploadTarget {
     28 public:
     29     static std::unique_ptr<SkInternalAtlasTextContext> Make(sk_sp<SkAtlasTextRenderer>);
     30 
     31     ~SkInternalAtlasTextContext() override;
     32 
     33     SkAtlasTextRenderer* renderer() const { return fRenderer.get(); }
     34 
     35     GrContext* grContext() const { return fGrContext.get(); }
     36     GrStrikeCache* glyphCache();
     37     GrTextBlobCache* textBlobCache();
     38 
     39     const GrTokenTracker* tokenTracker() final { return &fTokenTracker; }
     40     GrDeferredUploadToken addInlineUpload(GrDeferredTextureUploadFn&&) final;
     41     GrDeferredUploadToken addASAPUpload(GrDeferredTextureUploadFn&&) final;
     42 
     43     void recordDraw(const void* vertexData, int glyphCnt, const SkMatrix&, void* targetHandle);
     44 
     45     void flush();
     46 
     47 private:
     48     class DeferredUploader;
     49     SkInternalAtlasTextContext() = delete;
     50     SkInternalAtlasTextContext(const SkInternalAtlasTextContext&) = delete;
     51     SkInternalAtlasTextContext& operator=(const SkInternalAtlasTextContext&) = delete;
     52 
     53     SkInternalAtlasTextContext(sk_sp<SkAtlasTextRenderer>);
     54 
     55     sk_sp<SkAtlasTextRenderer> fRenderer;
     56 
     57     struct AtlasTexture {
     58         void* fTextureHandle = nullptr;
     59         GrTextureProxy* fProxy = nullptr;
     60     };
     61 
     62     struct Draw {
     63         int fGlyphCnt;
     64         GrDeferredUploadToken fToken;
     65         void* fTargetHandle;
     66         const void* fVertexData;
     67     };
     68 
     69     struct InlineUpload {
     70         GrDeferredTextureUploadFn fUpload;
     71         GrDeferredUploadToken fToken;
     72     };
     73 
     74     GrTokenTracker fTokenTracker;
     75     SkArenaAllocList<InlineUpload> fInlineUploads;
     76     SkArenaAllocList<Draw> fDraws;
     77     SkArenaAllocList<GrDeferredTextureUploadFn> fASAPUploads;
     78     SkArenaAlloc fArena{1024 * 40};
     79     sk_sp<GrContext> fGrContext;
     80     AtlasTexture fDistanceFieldAtlas;
     81 };
     82 
     83 #endif
     84