Index: cc/CCLayerTreeHostImpl.h |
=================================================================== |
--- cc/CCLayerTreeHostImpl.h (revision 158825) |
+++ cc/CCLayerTreeHostImpl.h (working copy) |
@@ -44,6 +44,61 @@ |
virtual void releaseContentsTexturesOnImplThread() = 0; |
}; |
+// CCPinchZoomViewport models the bounds and offset of the viewport that is used during a pinch-zoom operation. |
+// It tracks the layout-space dimensions of the viewport before any applied scale, and then tracks the layout-space |
+// coordinates of the viewport respecting the pinch settings. |
+class CCPinchZoomViewport { |
+public: |
+ CCPinchZoomViewport() |
+ : m_pageScaleFactor(1) |
aelias_OOO_until_Jul13
2012/09/26 23:15:09
Move this constructor to the .cpp file.
Jeff Timanus
2012/10/01 21:42:36
Done.
|
+ , m_pageScaleDelta(1) |
+ , m_sentPageScaleDelta(1) |
+ , m_minPageScaleFactor(0) |
aelias_OOO_until_Jul13
2012/09/26 23:15:09
Hmm, this default of zero is not very sane particu
Jeff Timanus
2012/10/01 21:42:36
I tried to make this change, but it introduced sub
|
+ , m_maxPageScaleFactor(0) { } |
+ |
+ float totalPageScaleFactor() const; |
+ |
+ void setPageScaleFactor(float factor) { m_pageScaleFactor = factor; } |
+ float pageScaleFactor() const { return m_pageScaleFactor; } |
+ |
+ void setPageScaleDelta(float delta); |
+ float pageScaleDelta() const { return m_pageScaleDelta; } |
+ |
+ float minPageScaleFactor() const { return m_minPageScaleFactor; } |
+ float maxPageScaleFactor() const { return m_maxPageScaleFactor; } |
+ |
+ void setSentPageScaleDelta(float delta) { m_sentPageScaleDelta = delta; } |
+ float sentPageScaleDelta() const { return m_sentPageScaleDelta; } |
+ |
+ // Returns true if the passed parameters were different from those previously |
+ // cached. |
+ bool setPageScaleFactorAndLimits(float pageScaleFactor, |
+ float minPageScaleFactor, |
+ float maxPageScaleFactor); |
+ |
+ // Returns the bounds and offset of the scaled and translated viewport to use for pinch-zoom. |
+ FloatRect bounds() const; |
+ const FloatPoint& scrollDelta() const { return m_pinchViewportScrollDelta; } |
+ |
+ const FloatSize& unpinchedBounds() const { return m_unpinchedBounds; } |
+ void setUnpinchedBounds(const FloatSize& bounds) { m_unpinchedBounds = bounds; } |
+ |
+ // Apply the scroll offset in layout space to the offset of the pinch-zoom viewport. The viewport cannot be |
+ // scrolled outside of the unpinched bounds. Returns the component of the scroll that is un-applied due to |
+ // this constraint. |
+ FloatSize applyScroll(FloatSize&); |
+ |
+private: |
+ float m_pageScaleFactor; |
+ float m_pageScaleDelta; |
+ float m_sentPageScaleDelta; |
+ float m_maxPageScaleFactor; |
+ float m_minPageScaleFactor; |
+ |
+ FloatPoint m_pinchViewportScrollDelta; |
+ FloatSize m_unpinchedBounds; |
aelias_OOO_until_Jul13
2012/09/26 23:15:09
Rename this to "m_unpinchedViewportSize" since it'
Jeff Timanus
2012/10/01 21:42:36
Done.
|
+}; |
+ |
// CCLayerTreeHostImpl owns the CCLayerImpl tree as well as associated rendering state |
class CCLayerTreeHostImpl : public CCInputHandlerClient, |
public CCRendererClient, |
@@ -152,10 +207,11 @@ |
float deviceScaleFactor() const { return m_deviceScaleFactor; } |
void setDeviceScaleFactor(float); |
- float pageScale() const { return m_pageScale; } |
- void setPageScaleFactorAndLimits(float pageScale, float minPageScale, float maxPageScale); |
+ float pageScaleFactor() const; |
+ void setPageScaleFactorAndLimits(float pageScaleFactor, float minPageScaleFactor, float maxPageScaleFactor); |
PassOwnPtr<CCScrollAndScaleSet> processScrollDeltas(); |
+ WebKit::WebTransformationMatrix implTransform() const; |
void startPageScaleAnimation(const IntSize& tragetPosition, bool useAnchor, float scale, double durationSec); |
@@ -172,6 +228,8 @@ |
void renderingStats(CCRenderingStats&) const; |
+ void updateRootScrollLayerImplTransform(); |
+ |
CCFrameRateCounter* fpsCounter() const { return m_fpsCounter.get(); } |
CCDebugRectHistory* debugRectHistory() const { return m_debugRectHistory.get(); } |
CCResourceProvider* resourceProvider() const { return m_resourceProvider.get(); } |
@@ -267,11 +325,6 @@ |
bool m_contentsTexturesPurged; |
size_t m_memoryAllocationLimitBytes; |
- float m_pageScale; |
- float m_pageScaleDelta; |
- float m_sentPageScaleDelta; |
- float m_minPageScale, m_maxPageScale; |
- |
SkColor m_backgroundColor; |
bool m_hasTransparentBackground; |
@@ -291,6 +344,8 @@ |
// rendering and input event hit testing. |
CCLayerList m_renderSurfaceLayerList; |
+ CCPinchZoomViewport m_pinchZoomViewport; |
+ |
OwnPtr<CCFrameRateCounter> m_fpsCounter; |
OwnPtr<CCDebugRectHistory> m_debugRectHistory; |
}; |