1 files changed, 121 insertions, 0 deletions
diff --git a/Source/WebKit/android/jni/PicturePile.h b/Source/WebKit/android/jni/PicturePile.h
new file mode 100644
index 0000000..b28a792
--- /dev/null
+++ b/Source/WebKit/android/jni/PicturePile.h
@@ -0,0 +1,121 @@
+/*
+ * Copyright 2012, The Android Open Source Project
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef PicturePile_h
+#define PicturePile_h
+
+#include "IntRect.h"
+#include "IntSize.h"
+#include "PrerenderedInval.h"
+#include "SkBitmap.h"
+#include "SkRegion.h"
+#include "SkRefCnt.h"
+
+#include <wtf/PassRefPtr.h>
+#include <wtf/RefCounted.h>
+#include <wtf/ThreadSafeRefCounted.h>
+#include <wtf/Vector.h>
+
+class SkPicture;
+class SkCanvas;
+
+namespace WebCore {
+
+class GraphicsContext;
+
+class PicturePainter {
+public:
+    virtual void paintContents(GraphicsContext* gc, IntRect& dirty) = 0;
+    virtual SkCanvas* createPrerenderCanvas(PrerenderedInval* prerendered)
+    {
+        return 0;
+    }
+    virtual ~PicturePainter() {}
+};
+
+class PictureContainer {
+public:
+    SkPicture* picture;
+    IntRect area;
+    bool dirty;
+    RefPtr<PrerenderedInval> prerendered;
+
+    PictureContainer(const IntRect& area)
+        : picture(0)
+        , area(area)
+        , dirty(true)
+    {}
+
+    PictureContainer(const PictureContainer& other)
+        : picture(other.picture)
+        , area(other.area)
+        , dirty(other.dirty)
+        , prerendered(other.prerendered)
+    {
+        SkSafeRef(picture);
+    }
+
+    ~PictureContainer()
+    {
+        SkSafeUnref(picture);
+    }
+};
+
+class PicturePile {
+public:
+    PicturePile() {}
+    PicturePile(const PicturePile& other);
+    PicturePile(SkPicture* picture);
+
+    const IntSize& size() { return m_size; }
+
+    void clearPrerenders();
+
+    // used by PicturePileLayerContents
+    void draw(SkCanvas* canvas);
+
+    // Used by WebViewCore
+    void invalidate(const IntRect& dirtyRect);
+    void setSize(const IntSize& size);
+    void updatePicturesIfNeeded(PicturePainter* painter);
+    void reset();
+    SkRegion& dirtyRegion() { return m_dirtyRegion; }
+    PrerenderedInval* prerenderedInvalForArea(const IntRect& area);
+
+private:
+    void applyWebkitInvals();
+    void updatePicture(PicturePainter* painter, PictureContainer& container);
+    void appendToPile(const IntRect& inval, const IntRect& originalInval = IntRect());
+    void drawWithClipRecursive(SkCanvas* canvas, SkRegion& clipRegion, int index);
+
+    IntSize m_size;
+    Vector<PictureContainer> m_pile;
+    Vector<IntRect> m_webkitInvals;
+    SkRegion m_dirtyRegion;
+};
+
+} // namespace android
+
+#endif // PicturePile_h