Upstream version 7.36.149.0

[platform/framework/web/crosswalk.git] / src / third_party / skia / src / core / SkPicturePlayback.h

diff --git a/src/third_party/skia/src/core/SkPicturePlayback.h b/src/third_party/skia/src/core/SkPicturePlayback.h
index 1cff0f9..28fdd63 100644 (file)
--- a/src/third_party/skia/src/core/SkPicturePlayback.h
+++ b/src/third_party/skia/src/core/SkPicturePlayback.h
@@ -14,7 +14,7 @@
 #include "SkBitmap.h"
 #include "SkData.h"
 #include "SkMatrix.h"
-#include "SkOrderedReadBuffer.h"
+#include "SkReadBuffer.h"
 #include "SkPaint.h"
 #include "SkPath.h"
 #include "SkPathHeap.h"
@@ -39,12 +39,28 @@ struct SkPictInfo {
         kPtrIs64Bit_Flag        = 1 << 2,
     };
 
+    char        fMagic[8];
     uint32_t    fVersion;
     uint32_t    fWidth;
     uint32_t    fHeight;
     uint32_t    fFlags;
 };
 
+#define SK_PICT_READER_TAG     SkSetFourByteTag('r', 'e', 'a', 'd')
+#define SK_PICT_FACTORY_TAG    SkSetFourByteTag('f', 'a', 'c', 't')
+#define SK_PICT_TYPEFACE_TAG   SkSetFourByteTag('t', 'p', 'f', 'c')
+#define SK_PICT_PICTURE_TAG    SkSetFourByteTag('p', 'c', 't', 'r')
+
+// This tag specifies the size of the ReadBuffer, needed for the following tags
+#define SK_PICT_BUFFER_SIZE_TAG     SkSetFourByteTag('a', 'r', 'a', 'y')
+// these are all inside the ARRAYS tag
+#define SK_PICT_BITMAP_BUFFER_TAG  SkSetFourByteTag('b', 't', 'm', 'p')
+#define SK_PICT_PAINT_BUFFER_TAG   SkSetFourByteTag('p', 'n', 't', ' ')
+#define SK_PICT_PATH_BUFFER_TAG    SkSetFourByteTag('p', 't', 'h', ' ')
+
+// Always write this guy last (with no length field afterwards)
+#define SK_PICT_EOF_TAG     SkSetFourByteTag('e', 'o', 'f', ' ')
+
 /**
  * Container for data that is needed to deep copy a SkPicture. The container
  * enables the data to be generated once and reused for subsequent copies.
@@ -59,17 +75,26 @@ struct SkPictCopyInfo {
 
 class SkPicturePlayback {
 public:
-    SkPicturePlayback();
-    SkPicturePlayback(const SkPicturePlayback& src, SkPictCopyInfo* deepCopyInfo = NULL);
-    explicit SkPicturePlayback(const SkPictureRecord& record, bool deepCopy = false);
-    static SkPicturePlayback* CreateFromStream(SkStream*, const SkPictInfo&,
+    SkPicturePlayback(const SkPicture* picture, const SkPicturePlayback& src,
+                      SkPictCopyInfo* deepCopyInfo = NULL);
+    SkPicturePlayback(const SkPicture* picture, const SkPictureRecord& record, const SkPictInfo&,
+                      bool deepCopy = false);
+    static SkPicturePlayback* CreateFromStream(SkPicture* picture,
+                                               SkStream*,
+                                               const SkPictInfo&,
                                                SkPicture::InstallPixelRefProc);
+    static SkPicturePlayback* CreateFromBuffer(SkPicture* picture,
+                                               SkReadBuffer&,
+                                               const SkPictInfo&);
 
     virtual ~SkPicturePlayback();
 
+    const SkPicture::OperationList& getActiveOps(const SkIRect& queryRect);
+
     void draw(SkCanvas& canvas, SkDrawPictureCallback*);
 
     void serialize(SkWStream*, SkPicture::EncodeBitmap) const;
+    void flatten(SkWriteBuffer&) const;
 
     void dumpSize() const;
 
@@ -81,9 +106,14 @@ public:
     void abort() { fAbortCurrentPlayback = true; }
 #endif
 
+    size_t curOpID() const { return fCurOffset; }
+    void resetOpID() { fCurOffset = 0; }
+
 protected:
-    bool parseStream(SkStream*, const SkPictInfo&,
-                     SkPicture::InstallPixelRefProc);
+    explicit SkPicturePlayback(const SkPicture* picture, const SkPictInfo& info);
+
+    bool parseStream(SkPicture* picture, SkStream*, SkPicture::InstallPixelRefProc);
+    bool parseBuffer(SkPicture* picture, SkReadBuffer& buffer);
 #ifdef SK_DEVELOPER
     virtual bool preDraw(int opIndex, int type);
     virtual void postDraw(int opIndex);
@@ -114,7 +144,7 @@ private:
     }
 
     const SkPath& getPath(SkReader32& reader) {
-        return (*fPathHeap)[reader.readInt() - 1];
+        return fPicture->getPath(reader.readInt() - 1);
     }
 
     SkPicture& getPicture(SkReader32& reader) {
@@ -190,18 +220,22 @@ public:
 #endif
 
 private:    // these help us with reading/writing
-    bool parseStreamTag(SkStream*, const SkPictInfo&, uint32_t tag, size_t size,
+    bool parseStreamTag(SkPicture* picture, SkStream*, uint32_t tag, uint32_t size,
                         SkPicture::InstallPixelRefProc);
-    bool parseBufferTag(SkOrderedReadBuffer&, uint32_t tag, size_t size);
-    void flattenToBuffer(SkOrderedWriteBuffer&) const;
+    bool parseBufferTag(SkPicture* picture, SkReadBuffer&, uint32_t tag, uint32_t size);
+    void flattenToBuffer(SkWriteBuffer&) const;
 
 private:
+    friend class SkPicture;
+
+    // The picture that owns this SkPicturePlayback object
+    const SkPicture* fPicture;
+
     // Only used by getBitmap() if the passed in index is SkBitmapHeap::INVALID_SLOT. This empty
     // bitmap allows playback to draw nothing and move on.
     SkBitmap fBadBitmap;
 
     SkAutoTUnref<SkBitmapHeap> fBitmapHeap;
-    SkAutoTUnref<SkPathHeap> fPathHeap;
 
     SkTRefArray<SkBitmap>* fBitmaps;
     SkTRefArray<SkPaint>* fPaints;
@@ -214,8 +248,40 @@ private:
     SkBBoxHierarchy* fBoundingHierarchy;
     SkPictureStateTree* fStateTree;
 
+    class CachedOperationList : public SkPicture::OperationList {
+    public:
+        CachedOperationList() {
+            fCacheQueryRect.setEmpty();
+        }
+
+        virtual bool valid() const { return true; }
+        virtual int numOps() const SK_OVERRIDE { return fOps.count(); }
+        virtual uint32_t offset(int index) const SK_OVERRIDE;
+        virtual const SkMatrix& matrix(int index) const SK_OVERRIDE;
+
+        // The query rect for which the cached active ops are valid
+        SkIRect          fCacheQueryRect;
+
+        // The operations which are active within 'fCachedQueryRect'
+        SkTDArray<void*> fOps;
+
+    private:
+        typedef SkPicture::OperationList INHERITED;
+    };
+
+    CachedOperationList* fCachedActiveOps;
+
     SkTypefacePlayback fTFPlayback;
     SkFactoryPlayback* fFactoryPlayback;
+
+    // The offset of the current operation when within the draw method
+    size_t fCurOffset;
+
+    const SkPictInfo fInfo;
+
+    static void WriteFactories(SkWStream* stream, const SkFactorySet& rec);
+    static void WriteTypefaces(SkWStream* stream, const SkRefCntSet& rec);
+
 #ifdef SK_BUILD_FOR_ANDROID
     SkMutex fDrawMutex;
     bool fAbortCurrentPlayback;