diff options
Diffstat (limited to 'Source/WebKit/android/jni/WebViewCore.cpp')
| -rw-r--r-- | Source/WebKit/android/jni/WebViewCore.cpp | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/Source/WebKit/android/jni/WebViewCore.cpp b/Source/WebKit/android/jni/WebViewCore.cpp index 1a1fc16..dddae43 100644 --- a/Source/WebKit/android/jni/WebViewCore.cpp +++ b/Source/WebKit/android/jni/WebViewCore.cpp @@ -171,6 +171,10 @@ FILE* gRenderTreeFile = 0; #include "RenderLayerCompositor.h" #endif +// How many ms to wait for the scroll to "settle" before we will consider doing +// prerenders +#define PRERENDER_AFTER_SCROLL_DELAY 750 + //////////////////////////////////////////////////////////////////////////////////////////////// namespace android { @@ -737,6 +741,8 @@ void WebViewCore::paintContents(WebCore::GraphicsContext* gc, WebCore::IntRect& SkCanvas* WebViewCore::createPrerenderCanvas(PrerenderedInval* prerendered) { + if (currentTimeMS() - m_scrollSetTime < PRERENDER_AFTER_SCROLL_DELAY) + return 0; if (prerendered->area.isEmpty()) return 0; FloatRect scaleTemp(m_scrollOffsetX, m_scrollOffsetY, m_screenWidth, m_screenHeight); @@ -1049,6 +1055,7 @@ void WebViewCore::setScrollOffset(bool sendScrollEvent, int dx, int dy) if (m_scrollOffsetX != dx || m_scrollOffsetY != dy) { m_scrollOffsetX = dx; m_scrollOffsetY = dy; + m_scrollSetTime = currentTimeMS(); // The visible rect is located within our coordinate space so it // contains the actual scroll position. Setting the location makes hit // testing work correctly. |