Merge "Change the default webView behavior to minimize the memory consumption" into ics-mr1

3 files changed, 20 insertions, 4 deletions

diff --git a/Source/WebCore/platform/graphics/android/GLWebViewState.cpp b/Source/WebCore/platform/graphics/android/GLWebViewState.cpp
index a44a743..5f48773 100644
--- a/Source/WebCore/platform/graphics/android/GLWebViewState.cpp
+++ b/Source/WebCore/platform/graphics/android/GLWebViewState.cpp
@@ -308,8 +308,10 @@ void GLWebViewState::setViewport(SkRect& viewport, float scale)
     // allocate max possible number of tiles visible with this viewport
     int viewMaxTileX = static_cast<int>(ceilf((viewport.width()-1) * invTileContentWidth)) + 1;
     int viewMaxTileY = static_cast<int>(ceilf((viewport.height()-1) * invTileContentHeight)) + 1;
-    int maxTextureCount = (viewMaxTileX + TILE_PREFETCH_DISTANCE * 2) *
-        (viewMaxTileY + TILE_PREFETCH_DISTANCE * 2) * 2;
+
+    int maxTextureCount = (viewMaxTileX + m_expandedTileBoundsX * 2) *
+        (viewMaxTileY + m_expandedTileBoundsY * 2) * 2;
+
     TilesManager::instance()->setMaxTextureCount(maxTextureCount);
     m_tiledPageA->updateBaseTileSize();
     m_tiledPageB->updateBaseTileSize();
@@ -425,8 +427,9 @@ bool GLWebViewState::drawGL(IntRect& rect, SkRect& viewport, IntRect* invalRect,
 
     float viewWidth = (viewport.fRight - viewport.fLeft) * TILE_PREFETCH_RATIO;
     float viewHeight = (viewport.fBottom - viewport.fTop) * TILE_PREFETCH_RATIO;
-    bool useHorzPrefetch = viewWidth < baseContentWidth();
-    bool useVertPrefetch = viewHeight < baseContentHeight();
+    bool useMinimalMemory = TilesManager::instance()->useMinimalMemory();
+    bool useHorzPrefetch = useMinimalMemory ? 0 : viewWidth < baseContentWidth();
+    bool useVertPrefetch = useMinimalMemory ? 0 : viewHeight < baseContentHeight();
     m_expandedTileBoundsX = (useHorzPrefetch) ? TILE_PREFETCH_DISTANCE : 0;
     m_expandedTileBoundsY = (useVertPrefetch) ? TILE_PREFETCH_DISTANCE : 0;
 
diff --git a/Source/WebCore/platform/graphics/android/TilesManager.cpp b/Source/WebCore/platform/graphics/android/TilesManager.cpp
index d36017f..acfe9e7 100644
--- a/Source/WebCore/platform/graphics/android/TilesManager.cpp
+++ b/Source/WebCore/platform/graphics/android/TilesManager.cpp
@@ -99,6 +99,7 @@ TilesManager::TilesManager()
     , m_showVisualIndicator(false)
     , m_invertedScreen(false)
     , m_invertedScreenSwitch(false)
+    , m_useMinimalMemory(true)
     , m_drawGLCount(1)
 {
     XLOG("TilesManager ctor");
diff --git a/Source/WebCore/platform/graphics/android/TilesManager.h b/Source/WebCore/platform/graphics/android/TilesManager.h
index 4daecff..8ae9202 100644
--- a/Source/WebCore/platform/graphics/android/TilesManager.h
+++ b/Source/WebCore/platform/graphics/android/TilesManager.h
@@ -170,6 +170,16 @@ public:
         m_shader.setContrast(contrast);
     }
 
+    void setUseMinimalMemory(bool useMinimalMemory)
+    {
+        m_useMinimalMemory = useMinimalMemory;
+    }
+
+    bool useMinimalMemory()
+    {
+        return m_useMinimalMemory;
+    }
+
     void incDrawGLCount()
     {
         m_drawGLCount++;
@@ -207,6 +217,8 @@ private:
     bool m_invertedScreen;
     bool m_invertedScreenSwitch;
 
+    bool m_useMinimalMemory;
+
     sp<TexturesGenerator> m_pixmapsGenerationThread;
 
     android::Mutex m_texturesLock;