add drawData() to canvas, to record data blobs

git-svn-id: http://skia.googlecode.com/svn/trunk@452 2bbb7eff-a529-9590-31e7-b0007b416f81

3 files changed, 13 insertions, 2 deletions

diff --git a/include/core/SkCanvas.h b/include/core/SkCanvas.h
index 8fba6cf49d..40b5c56171 100644
--- a/include/core/SkCanvas.h
+++ b/include/core/SkCanvas.h
@@ -626,6 +626,14 @@ public:
                               const uint16_t indices[], int indexCount,
                               const SkPaint& paint);
 
+    /** Send a blob of data to the canvas.
+        For canvases that draw, this call is effectively a no-op, as the data
+        is not parsed, but just ignored. However, this call exists for
+        subclasses like SkPicture's recording canvas, that can store the data
+        and then play it back later (via another call to drawData).
+     */
+    virtual void drawData(const void* data, size_t length);
+
     //////////////////////////////////////////////////////////////////////////
     
     /** Get the current bounder object.
diff --git a/include/utils/SkDumpCanvas.h b/include/utils/SkDumpCanvas.h
index 6f16c92faf..3731bef822 100644
--- a/include/utils/SkDumpCanvas.h
+++ b/include/utils/SkDumpCanvas.h
@@ -34,7 +34,8 @@ public:
         kDrawText_Verb,
         kDrawPicture_Verb,
         kDrawShape_Verb,
-        kDrawVertices_Verb
+        kDrawVertices_Verb,
+        kDrawData_Verb
     };
     
     /** Subclasses of this are installed on the DumpCanvas, and then called for
@@ -102,6 +103,7 @@ public:
                               const SkColor colors[], SkXfermode* xmode,
                               const uint16_t indices[], int indexCount,
                               const SkPaint& paint);
+    virtual void drawData(const void*, size_t);
 
 private:
     Dumper* fDumper;
diff --git a/include/utils/SkProxyCanvas.h b/include/utils/SkProxyCanvas.h
index f2e57abf84..082e0fdee8 100644
--- a/include/utils/SkProxyCanvas.h
+++ b/include/utils/SkProxyCanvas.h
@@ -75,7 +75,8 @@ public:
                               const SkColor colors[], SkXfermode* xmode,
                               const uint16_t indices[], int indexCount,
                               const SkPaint& paint);
-    
+    virtual void drawData(const void* data, size_t length);
+
     virtual SkBounder* setBounder(SkBounder* bounder);
     virtual SkDrawFilter* setDrawFilter(SkDrawFilter* filter);