Issue #1355 - Better way to create display items for column backgrounds

Part 1: Remove current table item, as it's never set.

Part 2: Get rid of generic table painting code, and handle each class separately.

Part 4: Hoist outline skipping into col(group) frame code.

Part 5: Skip box-shadow for table column and column groups.

Part 6: Store column and column group backgrounds separately, and then append them before the rest of the table contents.

Part 7: Pass rects in display list coordinates to AppendBackgroundItemsToTop.

Part 8: Create column and column group background display items as part of the cell's BuildDisplayList.

Part 9: Used cached values instead of calling nsDisplayListBuilder::ToReferenceFrame when possible, since it can be expensive when the requested frame isn't the builder's current frame.

Part 10: Make sure we build display items for table parts where only the normal position is visible, since we may need to create background items for ancestors at that position.

Part 11: Create an AutoBuildingDisplayList when we create background items for table columns and column groups, so that we initialize the invalidation state correctly.

1 files changed, 5 insertions, 8 deletions

diff --git a/layout/tables/nsTableWrapperFrame.cpp b/layout/tables/nsTableWrapperFrame.cpp
index da71375d5..476024e96 100644
--- a/layout/tables/nsTableWrapperFrame.cpp
+++ b/layout/tables/nsTableWrapperFrame.cpp
@@ -168,7 +168,6 @@ nsTableWrapperFrame::RemoveFrame(ChildListID  aListID,
 
 void
 nsTableWrapperFrame::BuildDisplayList(nsDisplayListBuilder*   aBuilder,
-                                      const nsRect&           aDirtyRect,
                                       const nsDisplayListSet& aLists)
 {
   // No border, background or outline are painted because they all belong
@@ -177,16 +176,15 @@ nsTableWrapperFrame::BuildDisplayList(nsDisplayListBuilder*   aBuilder,
   // If there's no caption, take a short cut to avoid having to create
   // the special display list set and then sort it.
   if (mCaptionFrames.IsEmpty()) {
-    BuildDisplayListForInnerTable(aBuilder, aDirtyRect, aLists);
+    BuildDisplayListForInnerTable(aBuilder, aLists);
     return;
   }
 
-  nsDisplayListCollection set;
-  BuildDisplayListForInnerTable(aBuilder, aDirtyRect, set);
+  nsDisplayListCollection set(aBuilder);
+  BuildDisplayListForInnerTable(aBuilder, set);
   
   nsDisplayListSet captionSet(set, set.BlockBorderBackgrounds());
-  BuildDisplayListForChild(aBuilder, mCaptionFrames.FirstChild(),
-                           aDirtyRect, captionSet);
+  BuildDisplayListForChild(aBuilder, mCaptionFrames.FirstChild(), captionSet);
 
   // Now we have to sort everything by content order, since the caption
   // may be somewhere inside the table
@@ -200,7 +198,6 @@ nsTableWrapperFrame::BuildDisplayList(nsDisplayListBuilder*   aBuilder,
 
 void
 nsTableWrapperFrame::BuildDisplayListForInnerTable(nsDisplayListBuilder*   aBuilder,
-                                                   const nsRect&           aDirtyRect,
                                                    const nsDisplayListSet& aLists)
 {
   // Just paint the regular children, but the children's background is our
@@ -208,7 +205,7 @@ nsTableWrapperFrame::BuildDisplayListForInnerTable(nsDisplayListBuilder*   aBuil
   nsIFrame* kid = mFrames.FirstChild();
   // The children should be in content order
   while (kid) {
-    BuildDisplayListForChild(aBuilder, kid, aDirtyRect, aLists);
+    BuildDisplayListForChild(aBuilder, kid, aLists);
     kid = kid->GetNextSibling();
   }
 }