1 files changed, 106 insertions, 0 deletions
diff --git a/Source/WebCore/platform/graphics/android/layers/PictureLayerContent.cpp b/Source/WebCore/platform/graphics/android/layers/PictureLayerContent.cpp
new file mode 100644
index 0000000..4398146
--- /dev/null
+++ b/Source/WebCore/platform/graphics/android/layers/PictureLayerContent.cpp
@@ -0,0 +1,106 @@
+#include "config.h"
+#include "PictureLayerContent.h"
+
+#include "InspectorCanvas.h"
+#include "SkPicture.h"
+
+namespace WebCore {
+
+PictureLayerContent::PictureLayerContent(SkPicture* picture)
+    : m_picture(picture)
+    , m_checkedContent(false)
+    , m_hasText(true)
+{
+    SkSafeRef(m_picture);
+}
+
+PictureLayerContent::PictureLayerContent(const PictureLayerContent& content)
+    : m_picture(content.m_picture)
+    , m_checkedContent(content.m_checkedContent)
+    , m_hasText(content.m_hasText)
+{
+    SkSafeRef(m_picture);
+}
+
+PictureLayerContent::~PictureLayerContent()
+{
+    SkSafeUnref(m_picture);
+}
+
+int PictureLayerContent::width()
+{
+    if (!m_picture)
+        return 0;
+    return m_picture->width();
+}
+
+int PictureLayerContent::height()
+{
+    if (!m_picture)
+        return 0;
+    return m_picture->height();
+}
+
+bool PictureLayerContent::isEmpty()
+{
+    if (!m_picture)
+        return true;
+    if (m_picture->width() == 0
+        || m_picture->height() == 0)
+        return true;
+    return false;
+}
+
+void PictureLayerContent::checkForOptimisations()
+{
+    if (!m_checkedContent)
+        hasText(); // for now only check the presence of text
+}
+
+bool PictureLayerContent::hasText()
+{
+    if (m_checkedContent)
+        return m_hasText;
+
+    // Let's check if we have text or not. If we don't, we can limit
+    // ourselves to scale 1!
+    InspectorBounder inspectorBounder;
+    InspectorCanvas checker(&inspectorBounder, m_picture);
+    SkBitmap bitmap;
+    bitmap.setConfig(SkBitmap::kARGB_8888_Config,
+                     m_picture->width(),
+                     m_picture->height());
+    checker.setBitmapDevice(bitmap);
+    checker.drawPicture(*m_picture);
+    m_hasText = checker.hasText();
+    if (!checker.hasContent()) {
+        // no content to draw, discard picture so UI / tile generation
+        // doesn't bother with it
+        SkSafeUnref(m_picture);
+        m_picture = 0;
+    }
+
+    m_checkedContent = true;
+
+    return m_hasText;
+}
+
+void PictureLayerContent::draw(SkCanvas* canvas)
+{
+    if (!m_picture)
+        return;
+
+    android::Mutex::Autolock lock(m_drawLock);
+    SkRect r = SkRect::MakeWH(width(), height());
+    canvas->clipRect(r);
+    canvas->drawPicture(*m_picture);
+}
+
+void PictureLayerContent::serialize(SkWStream* stream)
+{
+    if (!m_picture)
+        return;
+    m_picture->serialize(stream);
+}
+
+} // namespace WebCore