diff options
Diffstat (limited to 'layout/generic/nsIScrollableFrame.h')
| -rw-r--r-- | layout/generic/nsIScrollableFrame.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/layout/generic/nsIScrollableFrame.h b/layout/generic/nsIScrollableFrame.h index b7e3caf46..20a598452 100644 --- a/layout/generic/nsIScrollableFrame.h +++ b/layout/generic/nsIScrollableFrame.h @@ -440,13 +440,16 @@ public: /** * Determine if we should build a scrollable layer for this scroll frame and * return the result. It will also record this result on the scroll frame. + * Pass the visible rect in aVisibleRect. On return it will be set to the + * displayport if there is one. * Pass the dirty rect in aDirtyRect. On return it will be set to the - * displayport if there is one (ie the dirty rect that should be used). + * dirty rect inside the displayport (ie the dirty rect that should be used). * This function may create a display port where one did not exist before if * aAllowCreateDisplayPort is true. It is only allowed to be false if there * has been a call with it set to true before on the same paint. */ virtual bool DecideScrollableLayer(nsDisplayListBuilder* aBuilder, + nsRect* aVisibleRect, nsRect* aDirtyRect, bool aAllowCreateDisplayPort) = 0; |