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      1 /*
      2  * Copyright 2014 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 SkRecorder_DEFINED
      9 #define SkRecorder_DEFINED
     10 
     11 #include "SkBigPicture.h"
     12 #include "SkCanvas.h"
     13 #include "SkMiniRecorder.h"
     14 #include "SkRecord.h"
     15 #include "SkRecords.h"
     16 #include "SkTDArray.h"
     17 
     18 class SkBBHFactory;
     19 
     20 class SkDrawableList : SkNoncopyable {
     21 public:
     22     SkDrawableList() {}
     23     ~SkDrawableList();
     24 
     25     int count() const { return fArray.count(); }
     26     SkDrawable* const* begin() const { return fArray.begin(); }
     27 
     28     void append(SkDrawable* drawable);
     29 
     30     // Return a new or ref'd array of pictures that were snapped from our drawables.
     31     SkBigPicture::SnapshotArray* newDrawableSnapshot();
     32 
     33 private:
     34     SkTDArray<SkDrawable*> fArray;
     35 };
     36 
     37 // SkRecorder provides an SkCanvas interface for recording into an SkRecord.
     38 
     39 class SkRecorder : public SkCanvas {
     40 public:
     41     // Does not take ownership of the SkRecord.
     42     SkRecorder(SkRecord*, int width, int height, SkMiniRecorder* = nullptr);   // legacy version
     43     SkRecorder(SkRecord*, const SkRect& bounds, SkMiniRecorder* = nullptr);
     44 
     45     enum DrawPictureMode { Record_DrawPictureMode, Playback_DrawPictureMode };
     46     void reset(SkRecord*, const SkRect& bounds, DrawPictureMode, SkMiniRecorder* = nullptr);
     47 
     48     size_t approxBytesUsedBySubPictures() const { return fApproxBytesUsedBySubPictures; }
     49 
     50     SkDrawableList* getDrawableList() const { return fDrawableList.get(); }
     51     SkDrawableList* detachDrawableList() { return fDrawableList.detach(); }
     52 
     53     // Make SkRecorder forget entirely about its SkRecord*; all calls to SkRecorder will fail.
     54     void forgetRecord();
     55 
     56     void willSave() override;
     57     SaveLayerStrategy getSaveLayerStrategy(const SaveLayerRec&) override;
     58     void willRestore() override {}
     59     void didRestore() override;
     60 
     61     void didConcat(const SkMatrix&) override;
     62     void didSetMatrix(const SkMatrix&) override;
     63 
     64     void onDrawDRRect(const SkRRect&, const SkRRect&, const SkPaint&) override;
     65     void onDrawDrawable(SkDrawable*, const SkMatrix*) override;
     66     void onDrawText(const void* text,
     67                     size_t byteLength,
     68                     SkScalar x,
     69                     SkScalar y,
     70                     const SkPaint& paint) override;
     71     void onDrawPosText(const void* text,
     72                        size_t byteLength,
     73                        const SkPoint pos[],
     74                        const SkPaint& paint) override;
     75     void onDrawPosTextH(const void* text,
     76                         size_t byteLength,
     77                         const SkScalar xpos[],
     78                         SkScalar constY,
     79                         const SkPaint& paint) override;
     80     void onDrawTextOnPath(const void* text,
     81                           size_t byteLength,
     82                           const SkPath& path,
     83                           const SkMatrix* matrix,
     84                           const SkPaint& paint) override;
     85     void onDrawTextBlob(const SkTextBlob* blob,
     86                         SkScalar x,
     87                         SkScalar y,
     88                         const SkPaint& paint) override;
     89     void onDrawPatch(const SkPoint cubics[12], const SkColor colors[4],
     90                      const SkPoint texCoords[4], SkXfermode* xmode,
     91                      const SkPaint& paint) override;
     92 
     93     void onDrawPaint(const SkPaint&) override;
     94     void onDrawPoints(PointMode, size_t count, const SkPoint pts[], const SkPaint&) override;
     95     void onDrawRect(const SkRect&, const SkPaint&) override;
     96     void onDrawOval(const SkRect&, const SkPaint&) override;
     97     void onDrawRRect(const SkRRect&, const SkPaint&) override;
     98     void onDrawPath(const SkPath&, const SkPaint&) override;
     99     void onDrawBitmap(const SkBitmap&, SkScalar left, SkScalar top, const SkPaint*) override;
    100     void onDrawBitmapRect(const SkBitmap&, const SkRect* src, const SkRect& dst, const SkPaint*,
    101                           SrcRectConstraint) override;
    102     void onDrawImage(const SkImage*, SkScalar left, SkScalar top, const SkPaint*) override;
    103     void onDrawImageRect(const SkImage*, const SkRect* src, const SkRect& dst,
    104                          const SkPaint*, SrcRectConstraint) override;
    105     void onDrawImageNine(const SkImage*, const SkIRect& center, const SkRect& dst,
    106                          const SkPaint*) override;
    107     void onDrawBitmapNine(const SkBitmap&, const SkIRect& center, const SkRect& dst,
    108                           const SkPaint*) override;
    109     void onDrawVertices(VertexMode vmode, int vertexCount,
    110                         const SkPoint vertices[], const SkPoint texs[],
    111                         const SkColor colors[], SkXfermode* xmode,
    112                         const uint16_t indices[], int indexCount,
    113                         const SkPaint&) override;
    114     void onDrawAtlas(const SkImage*, const SkRSXform[], const SkRect[], const SkColor[],
    115                      int count, SkXfermode::Mode, const SkRect* cull, const SkPaint*) override;
    116 
    117     void onClipRect(const SkRect& rect, SkRegion::Op op, ClipEdgeStyle edgeStyle) override;
    118     void onClipRRect(const SkRRect& rrect, SkRegion::Op op, ClipEdgeStyle edgeStyle) override;
    119     void onClipPath(const SkPath& path, SkRegion::Op op, ClipEdgeStyle edgeStyle) override;
    120     void onClipRegion(const SkRegion& deviceRgn, SkRegion::Op op) override;
    121 
    122     void onDrawPicture(const SkPicture*, const SkMatrix*, const SkPaint*) override;
    123 
    124     SkSurface* onNewSurface(const SkImageInfo&, const SkSurfaceProps&) override { return nullptr; }
    125 
    126     void flushMiniRecorder();
    127 
    128 private:
    129     template <typename T>
    130     T* copy(const T*);
    131 
    132     template <typename T>
    133     T* copy(const T[], size_t count);
    134 
    135     SkIRect devBounds() const {
    136         SkIRect devBounds;
    137         this->getClipDeviceBounds(&devBounds);
    138         return devBounds;
    139     }
    140 
    141     DrawPictureMode fDrawPictureMode;
    142     size_t fApproxBytesUsedBySubPictures;
    143     SkRecord* fRecord;
    144     SkAutoTDelete<SkDrawableList> fDrawableList;
    145 
    146     SkMiniRecorder* fMiniRecorder;
    147 };
    148 
    149 #endif//SkRecorder_DEFINED
    150