SkMultiPictureDraw API

include/core/SkMultiPictureDraw.h

+/*
+ * Copyright 2014 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SkMultiPictureDraw_DEFINED
+#define SkMultiPictureDraw_DEFINED
+
+#include "SkTDArray.h"
+
+class SkCanvas;
+class SkPicture;
+
+/** \class SkMultiPictureDraw
+
+    The MultiPictureDraw object accepts several picture/canvas pairs and
+    then attempts to optimally draw the pictures into the canvases, sharing
+    as many resources as possible.
+*/
+class SkMultiPictureDraw {
+public:
+    SkMultiPictureDraw(int sizeHint = 0);
+    ~SkMultiPictureDraw() { this->unrefAll(); }
+
+    void add(const SkPicture* picture, 
+             SkCanvas* canvas, 
+             const SkMatrix* matrix = NULL);
+
+    void add(const SkPicture* picture,
+             SkCanvas* canvas,
+             const SkRect& clipRect,
+             const SkMatrix* matrix = NULL);
+
+    void add(const SkPicture* picture,

[bsalomon, 2014/08/21 14:49:32]

Do we really need this?

+             SkCanvas* canvas,
+             const SkRRect& clipRRect,
+             const SkMatrix* matrix = NULL);
+
+    void draw();
+
+private:
+    struct DrawData {
+        const SkPicture* pic;
+        SkCanvas* canvas;
+        SkMatrix matrix;
+
+        enum ClipType {
+            kNone_ClipType,
+            kRect_ClipType,
+            kRRect_ClipType
+        };
+
+        SkRRect clipRRect;  // also stores clipRect
+        ClipType clipType;

[bsalomon, 2014/08/21 14:49:32]

Doesn't rrect know if it's a rect?

+    };
+
+    SkTDArray<DrawData> fDrawData;
+
+    void unrefAll();
+};
+
+#endif