diff options
Diffstat (limited to 'chromium/cc/input/layer_scroll_offset_delegate.h')
-rw-r--r-- | chromium/cc/input/layer_scroll_offset_delegate.h | 31 |
1 files changed, 15 insertions, 16 deletions
diff --git a/chromium/cc/input/layer_scroll_offset_delegate.h b/chromium/cc/input/layer_scroll_offset_delegate.h index 54a11c9e2bd..ba11c3839dd 100644 --- a/chromium/cc/input/layer_scroll_offset_delegate.h +++ b/chromium/cc/input/layer_scroll_offset_delegate.h @@ -17,14 +17,6 @@ namespace cc { // The LayerScrollOffsetDelegate is only used on the impl thread. class LayerScrollOffsetDelegate { public: - // This is called by the compositor to notify the delegate what is the upper - // total scroll offset bound. - virtual void SetMaxScrollOffset(gfx::Vector2dF max_scroll_offset) = 0; - - // This is called by the compositor when the scroll offset of the layer would - // have otherwise changed. - virtual void SetTotalScrollOffset(gfx::Vector2dF new_value) = 0; - // This is called by the compositor to query the current scroll offset of the // layer. // There is no requirement that the return values of this method are @@ -34,18 +26,25 @@ class LayerScrollOffsetDelegate { // more than the value passed to the most recent SetMaxScrollOffset call. virtual gfx::Vector2dF GetTotalScrollOffset() = 0; + // This is called by the compositor to notify the delegate of any change to + // the following parameters: + // |total_scroll_offset| current scroll offset of the root layer, + // |max_scroll_offset| total scroll offset upper bound for the root layer, + // |scrollable_size| root layer scrollable size, + // |page_scale_factor| current page scale, + // |min_page_scale_factor| page scale lower limit, + // |max_page_scale_factor| page scale upper limit. + virtual void UpdateRootLayerState(const gfx::Vector2dF& total_scroll_offset, + const gfx::Vector2dF& max_scroll_offset, + const gfx::SizeF& scrollable_size, + float page_scale_factor, + float min_page_scale_factor, + float max_page_scale_factor) = 0; + // This is called by the compositor to check whether a delegate-managed fling // is active or not. virtual bool IsExternalFlingActive() const = 0; - // This is called by the compositor to notify the delegate what is the current - // page scale factor is. - virtual void SetTotalPageScaleFactor(float page_scale_factor) = 0; - - // This is called by the compositor to notify the delegate what is the layer's - // scrollable size is. - virtual void SetScrollableSize(gfx::SizeF scrollable_size) = 0; - protected: LayerScrollOffsetDelegate() {} virtual ~LayerScrollOffsetDelegate() {} |