d871b9515f
CLOSED TREE Backed out changeset d66c3f19a210 (bug 1235261) Backed out changeset 467d945426bb (bug 1235261) Backed out changeset 32b61df13142 (bug 1235261) Backed out changeset c50bb8ed4196 (bug 1235261) Backed out changeset 0ff0fa6fe81f (bug 1235261) Backed out changeset df70e89669da (bug 1235261) Backed out changeset 064969357fc9 (bug 1235261)
2071 lines
74 KiB
C++
2071 lines
74 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/* base class #1 for rendering objects that have child lists */
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#include "nsContainerFrame.h"
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#include "nsAbsoluteContainingBlock.h"
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#include "nsIDocument.h"
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#include "nsPresContext.h"
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#include "nsStyleContext.h"
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#include "nsRect.h"
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#include "nsPoint.h"
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#include "nsStyleConsts.h"
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#include "nsView.h"
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#include "nsIPresShell.h"
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#include "nsCOMPtr.h"
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#include "nsGkAtoms.h"
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#include "nsViewManager.h"
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#include "nsIWidget.h"
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#include "nsCSSRendering.h"
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#include "nsError.h"
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#include "nsDisplayList.h"
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#include "nsIBaseWindow.h"
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#include "nsBoxLayoutState.h"
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#include "nsCSSFrameConstructor.h"
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#include "nsBlockFrame.h"
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#include "nsPlaceholderFrame.h"
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#include "mozilla/AutoRestore.h"
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#include "nsIFrameInlines.h"
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#include "nsPrintfCString.h"
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#include <algorithm>
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using namespace mozilla;
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using namespace mozilla::dom;
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using namespace mozilla::layout;
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nsContainerFrame::~nsContainerFrame()
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{
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}
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NS_QUERYFRAME_HEAD(nsContainerFrame)
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NS_QUERYFRAME_ENTRY(nsContainerFrame)
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NS_QUERYFRAME_TAIL_INHERITING(nsSplittableFrame)
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void
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nsContainerFrame::Init(nsIContent* aContent,
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nsContainerFrame* aParent,
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nsIFrame* aPrevInFlow)
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{
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nsSplittableFrame::Init(aContent, aParent, aPrevInFlow);
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if (aPrevInFlow) {
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// Make sure we copy bits from our prev-in-flow that will affect
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// us. A continuation for a container frame needs to know if it
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// has a child with a view so that we'll properly reposition it.
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if (aPrevInFlow->GetStateBits() & NS_FRAME_HAS_CHILD_WITH_VIEW)
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AddStateBits(NS_FRAME_HAS_CHILD_WITH_VIEW);
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}
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}
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void
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nsContainerFrame::SetInitialChildList(ChildListID aListID,
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nsFrameList& aChildList)
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{
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#ifdef DEBUG
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nsFrame::VerifyDirtyBitSet(aChildList);
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#endif
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if (aListID == kPrincipalList) {
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MOZ_ASSERT(mFrames.IsEmpty(),
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"unexpected second call to SetInitialChildList");
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mFrames.SetFrames(aChildList);
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} else if (aListID == kBackdropList) {
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MOZ_ASSERT(StyleDisplay()->mTopLayer != NS_STYLE_TOP_LAYER_NONE,
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"Only top layer frames should have backdrop");
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MOZ_ASSERT(GetStateBits() & NS_FRAME_OUT_OF_FLOW,
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"Top layer frames should be out-of-flow");
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MOZ_ASSERT(!Properties().Get(BackdropProperty()),
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"We shouldn't have setup backdrop frame list before");
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#ifdef DEBUG
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{
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nsIFrame* placeholder = aChildList.FirstChild();
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MOZ_ASSERT(aChildList.OnlyChild(), "Should have only one backdrop");
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MOZ_ASSERT(placeholder->GetType() == nsGkAtoms::placeholderFrame,
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"The frame to be stored should be a placeholder");
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MOZ_ASSERT(static_cast<nsPlaceholderFrame*>(placeholder)->
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GetOutOfFlowFrame()->GetType() == nsGkAtoms::backdropFrame,
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"The placeholder should points to a backdrop frame");
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}
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#endif
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nsFrameList* list =
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new (PresContext()->PresShell()) nsFrameList(aChildList);
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Properties().Set(BackdropProperty(), list);
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} else {
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MOZ_ASSERT_UNREACHABLE("Unexpected child list");
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}
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}
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void
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nsContainerFrame::AppendFrames(ChildListID aListID,
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nsFrameList& aFrameList)
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{
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MOZ_ASSERT(aListID == kPrincipalList || aListID == kNoReflowPrincipalList,
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"unexpected child list");
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if (MOZ_UNLIKELY(aFrameList.IsEmpty())) {
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return;
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}
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DrainSelfOverflowList(); // ensure the last frame is in mFrames
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mFrames.AppendFrames(this, aFrameList);
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if (aListID != kNoReflowPrincipalList) {
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PresContext()->PresShell()->
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FrameNeedsReflow(this, nsIPresShell::eTreeChange,
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NS_FRAME_HAS_DIRTY_CHILDREN);
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}
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}
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void
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nsContainerFrame::InsertFrames(ChildListID aListID,
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nsIFrame* aPrevFrame,
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nsFrameList& aFrameList)
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{
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MOZ_ASSERT(aListID == kPrincipalList || aListID == kNoReflowPrincipalList,
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"unexpected child list");
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NS_ASSERTION(!aPrevFrame || aPrevFrame->GetParent() == this,
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"inserting after sibling frame with different parent");
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if (MOZ_UNLIKELY(aFrameList.IsEmpty())) {
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return;
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}
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DrainSelfOverflowList(); // ensure aPrevFrame is in mFrames
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mFrames.InsertFrames(this, aPrevFrame, aFrameList);
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if (aListID != kNoReflowPrincipalList) {
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PresContext()->PresShell()->
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FrameNeedsReflow(this, nsIPresShell::eTreeChange,
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NS_FRAME_HAS_DIRTY_CHILDREN);
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}
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}
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void
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nsContainerFrame::RemoveFrame(ChildListID aListID,
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nsIFrame* aOldFrame)
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{
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MOZ_ASSERT(aListID == kPrincipalList || aListID == kNoReflowPrincipalList,
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"unexpected child list");
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// Loop and destroy aOldFrame and all of its continuations.
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// Request a reflow on the parent frames involved unless we were explicitly
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// told not to (kNoReflowPrincipalList).
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bool generateReflowCommand = true;
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if (kNoReflowPrincipalList == aListID) {
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generateReflowCommand = false;
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}
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nsIPresShell* shell = PresContext()->PresShell();
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nsContainerFrame* lastParent = nullptr;
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while (aOldFrame) {
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nsIFrame* oldFrameNextContinuation = aOldFrame->GetNextContinuation();
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nsContainerFrame* parent = aOldFrame->GetParent();
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// Please note that 'parent' may not actually be where 'aOldFrame' lives.
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// We really MUST use StealFrame() and nothing else here.
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// @see nsInlineFrame::StealFrame for details.
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parent->StealFrame(aOldFrame, true);
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aOldFrame->Destroy();
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aOldFrame = oldFrameNextContinuation;
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if (parent != lastParent && generateReflowCommand) {
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shell->FrameNeedsReflow(parent, nsIPresShell::eTreeChange,
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NS_FRAME_HAS_DIRTY_CHILDREN);
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lastParent = parent;
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}
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}
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}
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void
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nsContainerFrame::DestroyAbsoluteFrames(nsIFrame* aDestructRoot)
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{
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if (IsAbsoluteContainer()) {
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GetAbsoluteContainingBlock()->DestroyFrames(this, aDestructRoot);
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MarkAsNotAbsoluteContainingBlock();
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}
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}
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void
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nsContainerFrame::SafelyDestroyFrameListProp(nsIFrame* aDestructRoot,
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nsIPresShell* aPresShell,
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FramePropertyTable* aPropTable,
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FrameListPropertyDescriptor aProp)
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{
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// Note that the last frame can be removed through another route and thus
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// delete the property -- that's why we fetch the property again before
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// removing each frame rather than fetching it once and iterating the list.
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while (nsFrameList* frameList = aPropTable->Get(this, aProp)) {
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nsIFrame* frame = frameList->RemoveFirstChild();
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if (MOZ_LIKELY(frame)) {
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frame->DestroyFrom(aDestructRoot);
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} else {
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aPropTable->Remove(this, aProp);
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frameList->Delete(aPresShell);
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return;
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}
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}
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}
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void
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nsContainerFrame::DestroyFrom(nsIFrame* aDestructRoot)
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{
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// Prevent event dispatch during destruction.
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if (HasView()) {
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GetView()->SetFrame(nullptr);
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}
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DestroyAbsoluteFrames(aDestructRoot);
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// Destroy frames on the principal child list.
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mFrames.DestroyFramesFrom(aDestructRoot);
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// Destroy frames on the auxiliary frame lists and delete the lists.
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nsPresContext* pc = PresContext();
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nsIPresShell* shell = pc->PresShell();
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FramePropertyTable* props = pc->PropertyTable();
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SafelyDestroyFrameListProp(aDestructRoot, shell, props, OverflowProperty());
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MOZ_ASSERT(IsFrameOfType(nsIFrame::eCanContainOverflowContainers) ||
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!(props->Get(this, nsContainerFrame::OverflowContainersProperty()) ||
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props->Get(this, nsContainerFrame::ExcessOverflowContainersProperty())),
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"this type of frame should't have overflow containers");
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SafelyDestroyFrameListProp(aDestructRoot, shell, props,
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OverflowContainersProperty());
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SafelyDestroyFrameListProp(aDestructRoot, shell, props,
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ExcessOverflowContainersProperty());
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MOZ_ASSERT(!props->Get(this, BackdropProperty()) ||
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StyleDisplay()->mTopLayer != NS_STYLE_TOP_LAYER_NONE,
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"only top layer frame may have backdrop");
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SafelyDestroyFrameListProp(aDestructRoot, shell, props, BackdropProperty());
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nsSplittableFrame::DestroyFrom(aDestructRoot);
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}
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/////////////////////////////////////////////////////////////////////////////
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// Child frame enumeration
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const nsFrameList&
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nsContainerFrame::GetChildList(ChildListID aListID) const
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{
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// We only know about the principal child list, the overflow lists,
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// and the backdrop list.
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switch (aListID) {
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case kPrincipalList:
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return mFrames;
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case kOverflowList: {
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nsFrameList* list = GetOverflowFrames();
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return list ? *list : nsFrameList::EmptyList();
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}
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case kOverflowContainersList: {
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nsFrameList* list = GetPropTableFrames(OverflowContainersProperty());
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return list ? *list : nsFrameList::EmptyList();
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}
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case kExcessOverflowContainersList: {
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nsFrameList* list =
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GetPropTableFrames(ExcessOverflowContainersProperty());
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return list ? *list : nsFrameList::EmptyList();
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}
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case kBackdropList: {
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nsFrameList* list = GetPropTableFrames(BackdropProperty());
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return list ? *list : nsFrameList::EmptyList();
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}
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default:
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return nsSplittableFrame::GetChildList(aListID);
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}
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}
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static void
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AppendIfNonempty(const nsIFrame* aFrame,
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FramePropertyTable* aPropTable,
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nsContainerFrame::FrameListPropertyDescriptor aProperty,
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nsTArray<nsIFrame::ChildList>* aLists,
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nsIFrame::ChildListID aListID)
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{
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if (nsFrameList* list = aPropTable->Get(aFrame, aProperty)) {
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list->AppendIfNonempty(aLists, aListID);
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}
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}
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void
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nsContainerFrame::GetChildLists(nsTArray<ChildList>* aLists) const
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{
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mFrames.AppendIfNonempty(aLists, kPrincipalList);
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FramePropertyTable* propTable = PresContext()->PropertyTable();
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::AppendIfNonempty(this, propTable, OverflowProperty(),
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aLists, kOverflowList);
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if (IsFrameOfType(nsIFrame::eCanContainOverflowContainers)) {
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::AppendIfNonempty(this, propTable, OverflowContainersProperty(),
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aLists, kOverflowContainersList);
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::AppendIfNonempty(this, propTable, ExcessOverflowContainersProperty(),
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aLists, kExcessOverflowContainersList);
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}
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// Bypass BackdropProperty hashtable lookup for any in-flow frames
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// since frames in the top layer (only which can have backdrop) are
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// definitely out-of-flow.
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if (GetStateBits() & NS_FRAME_OUT_OF_FLOW) {
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::AppendIfNonempty(this, propTable, BackdropProperty(),
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aLists, kBackdropList);
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}
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nsSplittableFrame::GetChildLists(aLists);
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}
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/////////////////////////////////////////////////////////////////////////////
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// Painting/Events
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void
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nsContainerFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsRect& aDirtyRect,
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const nsDisplayListSet& aLists)
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{
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DisplayBorderBackgroundOutline(aBuilder, aLists);
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BuildDisplayListForNonBlockChildren(aBuilder, aDirtyRect, aLists);
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}
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void
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nsContainerFrame::BuildDisplayListForNonBlockChildren(nsDisplayListBuilder* aBuilder,
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const nsRect& aDirtyRect,
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const nsDisplayListSet& aLists,
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uint32_t aFlags)
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{
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nsIFrame* kid = mFrames.FirstChild();
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// Put each child's background directly onto the content list
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nsDisplayListSet set(aLists, aLists.Content());
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// The children should be in content order
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while (kid) {
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BuildDisplayListForChild(aBuilder, kid, aDirtyRect, set, aFlags);
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kid = kid->GetNextSibling();
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}
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}
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/* virtual */ void
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nsContainerFrame::ChildIsDirty(nsIFrame* aChild)
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{
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NS_ASSERTION(NS_SUBTREE_DIRTY(aChild), "child isn't actually dirty");
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AddStateBits(NS_FRAME_HAS_DIRTY_CHILDREN);
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}
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bool
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nsContainerFrame::IsLeaf() const
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{
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return false;
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}
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nsIFrame::FrameSearchResult
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nsContainerFrame::PeekOffsetNoAmount(bool aForward, int32_t* aOffset)
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{
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NS_ASSERTION (aOffset && *aOffset <= 1, "aOffset out of range");
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// Don't allow the caret to stay in an empty (leaf) container frame.
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return CONTINUE_EMPTY;
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}
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nsIFrame::FrameSearchResult
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nsContainerFrame::PeekOffsetCharacter(bool aForward, int32_t* aOffset,
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bool aRespectClusters)
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{
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NS_ASSERTION (aOffset && *aOffset <= 1, "aOffset out of range");
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// Don't allow the caret to stay in an empty (leaf) container frame.
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return CONTINUE_EMPTY;
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}
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/////////////////////////////////////////////////////////////////////////////
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// Helper member functions
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static nsresult
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ReparentFrameViewTo(nsIFrame* aFrame,
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nsViewManager* aViewManager,
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nsView* aNewParentView,
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nsView* aOldParentView)
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{
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// XXX What to do about placeholder views for "position: fixed" elements?
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// They should be reparented too.
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// Does aFrame have a view?
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if (aFrame->HasView()) {
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#ifdef MOZ_XUL
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if (aFrame->GetType() == nsGkAtoms::menuPopupFrame) {
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// This view must be parented by the root view, don't reparent it.
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return NS_OK;
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}
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#endif
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nsView* view = aFrame->GetView();
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// Verify that the current parent view is what we think it is
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//nsView* parentView;
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//NS_ASSERTION(parentView == aOldParentView, "unexpected parent view");
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aViewManager->RemoveChild(view);
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// The view will remember the Z-order and other attributes that have been set on it.
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nsView* insertBefore = nsLayoutUtils::FindSiblingViewFor(aNewParentView, aFrame);
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aViewManager->InsertChild(aNewParentView, view, insertBefore, insertBefore != nullptr);
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} else {
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nsIFrame::ChildListIterator lists(aFrame);
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for (; !lists.IsDone(); lists.Next()) {
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// Iterate the child frames, and check each child frame to see if it has
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// a view
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nsFrameList::Enumerator childFrames(lists.CurrentList());
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for (; !childFrames.AtEnd(); childFrames.Next()) {
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ReparentFrameViewTo(childFrames.get(), aViewManager,
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aNewParentView, aOldParentView);
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}
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}
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}
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return NS_OK;
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}
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void
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nsContainerFrame::CreateViewForFrame(nsIFrame* aFrame,
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bool aForce)
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{
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if (aFrame->HasView()) {
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return;
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}
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// If we don't yet have a view, see if we need a view
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if (!aForce && !aFrame->NeedsView()) {
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// don't need a view
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return;
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}
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nsView* parentView = aFrame->GetParent()->GetClosestView();
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NS_ASSERTION(parentView, "no parent with view");
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nsViewManager* viewManager = parentView->GetViewManager();
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NS_ASSERTION(viewManager, "null view manager");
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// Create a view
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nsView* view = viewManager->CreateView(aFrame->GetRect(), parentView);
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SyncFrameViewProperties(aFrame->PresContext(), aFrame, nullptr, view);
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nsView* insertBefore = nsLayoutUtils::FindSiblingViewFor(parentView, aFrame);
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// we insert this view 'above' the insertBefore view, unless insertBefore is null,
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// in which case we want to call with aAbove == false to insert at the beginning
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// in document order
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viewManager->InsertChild(parentView, view, insertBefore, insertBefore != nullptr);
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// REVIEW: Don't create a widget for fixed-pos elements anymore.
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// ComputeRepaintRegionForCopy will calculate the right area to repaint
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// when we scroll.
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// Reparent views on any child frames (or their descendants) to this
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// view. We can just call ReparentFrameViewTo on this frame because
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// we know this frame has no view, so it will crawl the children. Also,
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// we know that any descendants with views must have 'parentView' as their
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// parent view.
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ReparentFrameViewTo(aFrame, viewManager, view, parentView);
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// Remember our view
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aFrame->SetView(view);
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NS_FRAME_LOG(NS_FRAME_TRACE_CALLS,
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("nsContainerFrame::CreateViewForFrame: frame=%p view=%p",
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aFrame, view));
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}
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/**
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* Position the view associated with |aKidFrame|, if there is one. A
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* container frame should call this method after positioning a frame,
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* but before |Reflow|.
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*/
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void
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nsContainerFrame::PositionFrameView(nsIFrame* aKidFrame)
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{
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nsIFrame* parentFrame = aKidFrame->GetParent();
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if (!aKidFrame->HasView() || !parentFrame)
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return;
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nsView* view = aKidFrame->GetView();
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nsViewManager* vm = view->GetViewManager();
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nsPoint pt;
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nsView* ancestorView = parentFrame->GetClosestView(&pt);
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if (ancestorView != view->GetParent()) {
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NS_ASSERTION(ancestorView == view->GetParent()->GetParent(),
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"Allowed only one anonymous view between frames");
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// parentFrame is responsible for positioning aKidFrame's view
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// explicitly
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return;
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}
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pt += aKidFrame->GetPosition();
|
|
vm->MoveViewTo(view, pt.x, pt.y);
|
|
}
|
|
|
|
nsresult
|
|
nsContainerFrame::ReparentFrameView(nsIFrame* aChildFrame,
|
|
nsIFrame* aOldParentFrame,
|
|
nsIFrame* aNewParentFrame)
|
|
{
|
|
NS_PRECONDITION(aChildFrame, "null child frame pointer");
|
|
NS_PRECONDITION(aOldParentFrame, "null old parent frame pointer");
|
|
NS_PRECONDITION(aNewParentFrame, "null new parent frame pointer");
|
|
NS_PRECONDITION(aOldParentFrame != aNewParentFrame, "same old and new parent frame");
|
|
|
|
// See if either the old parent frame or the new parent frame have a view
|
|
while (!aOldParentFrame->HasView() && !aNewParentFrame->HasView()) {
|
|
// Walk up both the old parent frame and the new parent frame nodes
|
|
// stopping when we either find a common parent or views for one
|
|
// or both of the frames.
|
|
//
|
|
// This works well in the common case where we push/pull and the old parent
|
|
// frame and the new parent frame are part of the same flow. They will
|
|
// typically be the same distance (height wise) from the
|
|
aOldParentFrame = aOldParentFrame->GetParent();
|
|
aNewParentFrame = aNewParentFrame->GetParent();
|
|
|
|
// We should never walk all the way to the root frame without finding
|
|
// a view
|
|
NS_ASSERTION(aOldParentFrame && aNewParentFrame, "didn't find view");
|
|
|
|
// See if we reached a common ancestor
|
|
if (aOldParentFrame == aNewParentFrame) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
// See if we found a common parent frame
|
|
if (aOldParentFrame == aNewParentFrame) {
|
|
// We found a common parent and there are no views between the old parent
|
|
// and the common parent or the new parent frame and the common parent.
|
|
// Because neither the old parent frame nor the new parent frame have views,
|
|
// then any child views don't need reparenting
|
|
return NS_OK;
|
|
}
|
|
|
|
// We found views for one or both of the ancestor frames before we
|
|
// found a common ancestor.
|
|
nsView* oldParentView = aOldParentFrame->GetClosestView();
|
|
nsView* newParentView = aNewParentFrame->GetClosestView();
|
|
|
|
// See if the old parent frame and the new parent frame are in the
|
|
// same view sub-hierarchy. If they are then we don't have to do
|
|
// anything
|
|
if (oldParentView != newParentView) {
|
|
// They're not so we need to reparent any child views
|
|
return ReparentFrameViewTo(aChildFrame, oldParentView->GetViewManager(), newParentView,
|
|
oldParentView);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsContainerFrame::ReparentFrameViewList(const nsFrameList& aChildFrameList,
|
|
nsIFrame* aOldParentFrame,
|
|
nsIFrame* aNewParentFrame)
|
|
{
|
|
NS_PRECONDITION(aChildFrameList.NotEmpty(), "empty child frame list");
|
|
NS_PRECONDITION(aOldParentFrame, "null old parent frame pointer");
|
|
NS_PRECONDITION(aNewParentFrame, "null new parent frame pointer");
|
|
NS_PRECONDITION(aOldParentFrame != aNewParentFrame, "same old and new parent frame");
|
|
|
|
// See if either the old parent frame or the new parent frame have a view
|
|
while (!aOldParentFrame->HasView() && !aNewParentFrame->HasView()) {
|
|
// Walk up both the old parent frame and the new parent frame nodes
|
|
// stopping when we either find a common parent or views for one
|
|
// or both of the frames.
|
|
//
|
|
// This works well in the common case where we push/pull and the old parent
|
|
// frame and the new parent frame are part of the same flow. They will
|
|
// typically be the same distance (height wise) from the
|
|
aOldParentFrame = aOldParentFrame->GetParent();
|
|
aNewParentFrame = aNewParentFrame->GetParent();
|
|
|
|
// We should never walk all the way to the root frame without finding
|
|
// a view
|
|
NS_ASSERTION(aOldParentFrame && aNewParentFrame, "didn't find view");
|
|
|
|
// See if we reached a common ancestor
|
|
if (aOldParentFrame == aNewParentFrame) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
// See if we found a common parent frame
|
|
if (aOldParentFrame == aNewParentFrame) {
|
|
// We found a common parent and there are no views between the old parent
|
|
// and the common parent or the new parent frame and the common parent.
|
|
// Because neither the old parent frame nor the new parent frame have views,
|
|
// then any child views don't need reparenting
|
|
return NS_OK;
|
|
}
|
|
|
|
// We found views for one or both of the ancestor frames before we
|
|
// found a common ancestor.
|
|
nsView* oldParentView = aOldParentFrame->GetClosestView();
|
|
nsView* newParentView = aNewParentFrame->GetClosestView();
|
|
|
|
// See if the old parent frame and the new parent frame are in the
|
|
// same view sub-hierarchy. If they are then we don't have to do
|
|
// anything
|
|
if (oldParentView != newParentView) {
|
|
nsViewManager* viewManager = oldParentView->GetViewManager();
|
|
|
|
// They're not so we need to reparent any child views
|
|
for (nsFrameList::Enumerator e(aChildFrameList); !e.AtEnd(); e.Next()) {
|
|
ReparentFrameViewTo(e.get(), viewManager, newParentView, oldParentView);
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
static nsIWidget*
|
|
GetPresContextContainerWidget(nsPresContext* aPresContext)
|
|
{
|
|
nsCOMPtr<nsISupports> container = aPresContext->Document()->GetContainer();
|
|
nsCOMPtr<nsIBaseWindow> baseWindow = do_QueryInterface(container);
|
|
if (!baseWindow)
|
|
return nullptr;
|
|
|
|
nsCOMPtr<nsIWidget> mainWidget;
|
|
baseWindow->GetMainWidget(getter_AddRefs(mainWidget));
|
|
return mainWidget;
|
|
}
|
|
|
|
static bool
|
|
IsTopLevelWidget(nsIWidget* aWidget)
|
|
{
|
|
nsWindowType windowType = aWidget->WindowType();
|
|
return windowType == eWindowType_toplevel ||
|
|
windowType == eWindowType_dialog ||
|
|
windowType == eWindowType_popup ||
|
|
windowType == eWindowType_sheet;
|
|
}
|
|
|
|
void
|
|
nsContainerFrame::SyncWindowProperties(nsPresContext* aPresContext,
|
|
nsIFrame* aFrame,
|
|
nsView* aView,
|
|
nsRenderingContext* aRC,
|
|
uint32_t aFlags)
|
|
{
|
|
#ifdef MOZ_XUL
|
|
if (!aView || !nsCSSRendering::IsCanvasFrame(aFrame) || !aView->HasWidget())
|
|
return;
|
|
|
|
nsCOMPtr<nsIWidget> windowWidget = GetPresContextContainerWidget(aPresContext);
|
|
if (!windowWidget || !IsTopLevelWidget(windowWidget))
|
|
return;
|
|
|
|
nsViewManager* vm = aView->GetViewManager();
|
|
nsView* rootView = vm->GetRootView();
|
|
|
|
if (aView != rootView)
|
|
return;
|
|
|
|
Element* rootElement = aPresContext->Document()->GetRootElement();
|
|
if (!rootElement || !rootElement->IsXULElement()) {
|
|
// Scrollframes use native widgets which don't work well with
|
|
// translucent windows, at least in Windows XP. So if the document
|
|
// has a root scrollrame it's useless to try to make it transparent,
|
|
// we'll just get something broken.
|
|
// nsCSSFrameConstructor::ConstructRootFrame constructs root
|
|
// scrollframes whenever the root element is not a XUL element, so
|
|
// we test for that here. We can't just call
|
|
// presShell->GetRootScrollFrame() since that might not have
|
|
// been constructed yet.
|
|
// We can change this to allow translucent toplevel HTML documents
|
|
// (e.g. to do something like Dashboard widgets), once we
|
|
// have broad support for translucent scrolled documents, but be
|
|
// careful because apparently some Firefox extensions expect
|
|
// openDialog("something.html") to produce an opaque window
|
|
// even if the HTML doesn't have a background-color set.
|
|
return;
|
|
}
|
|
|
|
nsIFrame *rootFrame = aPresContext->PresShell()->FrameConstructor()->GetRootElementStyleFrame();
|
|
if (!rootFrame)
|
|
return;
|
|
|
|
if (aFlags & SET_ASYNC) {
|
|
aView->SetNeedsWindowPropertiesSync();
|
|
return;
|
|
}
|
|
|
|
RefPtr<nsPresContext> kungFuDeathGrip(aPresContext);
|
|
nsWeakFrame weak(rootFrame);
|
|
|
|
nsTransparencyMode mode = nsLayoutUtils::GetFrameTransparency(aFrame, rootFrame);
|
|
int32_t shadow = rootFrame->StyleUIReset()->mWindowShadow;
|
|
nsCOMPtr<nsIWidget> viewWidget = aView->GetWidget();
|
|
viewWidget->SetTransparencyMode(mode);
|
|
windowWidget->SetWindowShadowStyle(shadow);
|
|
|
|
if (!aRC)
|
|
return;
|
|
|
|
if (!weak.IsAlive()) {
|
|
return;
|
|
}
|
|
|
|
nsBoxLayoutState aState(aPresContext, aRC);
|
|
nsSize minSize = rootFrame->GetMinSize(aState);
|
|
nsSize maxSize = rootFrame->GetMaxSize(aState);
|
|
|
|
SetSizeConstraints(aPresContext, windowWidget, minSize, maxSize);
|
|
#endif
|
|
}
|
|
|
|
void nsContainerFrame::SetSizeConstraints(nsPresContext* aPresContext,
|
|
nsIWidget* aWidget,
|
|
const nsSize& aMinSize,
|
|
const nsSize& aMaxSize)
|
|
{
|
|
LayoutDeviceIntSize devMinSize(aPresContext->AppUnitsToDevPixels(aMinSize.width),
|
|
aPresContext->AppUnitsToDevPixels(aMinSize.height));
|
|
LayoutDeviceIntSize devMaxSize(aMaxSize.width == NS_INTRINSICSIZE ? NS_MAXSIZE :
|
|
aPresContext->AppUnitsToDevPixels(aMaxSize.width),
|
|
aMaxSize.height == NS_INTRINSICSIZE ? NS_MAXSIZE :
|
|
aPresContext->AppUnitsToDevPixels(aMaxSize.height));
|
|
|
|
// MinSize has a priority over MaxSize
|
|
if (devMinSize.width > devMaxSize.width)
|
|
devMaxSize.width = devMinSize.width;
|
|
if (devMinSize.height > devMaxSize.height)
|
|
devMaxSize.height = devMinSize.height;
|
|
|
|
widget::SizeConstraints constraints(devMinSize, devMaxSize);
|
|
|
|
// The sizes are in inner window sizes, so convert them into outer window sizes.
|
|
// Use a size of (200, 200) as only the difference between the inner and outer
|
|
// size is needed.
|
|
LayoutDeviceIntSize windowSize =
|
|
aWidget->ClientToWindowSize(LayoutDeviceIntSize(200, 200));
|
|
if (constraints.mMinSize.width)
|
|
constraints.mMinSize.width += windowSize.width - 200;
|
|
if (constraints.mMinSize.height)
|
|
constraints.mMinSize.height += windowSize.height - 200;
|
|
if (constraints.mMaxSize.width != NS_MAXSIZE)
|
|
constraints.mMaxSize.width += windowSize.width - 200;
|
|
if (constraints.mMaxSize.height != NS_MAXSIZE)
|
|
constraints.mMaxSize.height += windowSize.height - 200;
|
|
|
|
aWidget->SetSizeConstraints(constraints);
|
|
}
|
|
|
|
void
|
|
nsContainerFrame::SyncFrameViewAfterReflow(nsPresContext* aPresContext,
|
|
nsIFrame* aFrame,
|
|
nsView* aView,
|
|
const nsRect& aVisualOverflowArea,
|
|
uint32_t aFlags)
|
|
{
|
|
if (!aView) {
|
|
return;
|
|
}
|
|
|
|
// Make sure the view is sized and positioned correctly
|
|
if (0 == (aFlags & NS_FRAME_NO_MOVE_VIEW)) {
|
|
PositionFrameView(aFrame);
|
|
}
|
|
|
|
if (0 == (aFlags & NS_FRAME_NO_SIZE_VIEW)) {
|
|
nsViewManager* vm = aView->GetViewManager();
|
|
|
|
vm->ResizeView(aView, aVisualOverflowArea, true);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsContainerFrame::SyncFrameViewProperties(nsPresContext* aPresContext,
|
|
nsIFrame* aFrame,
|
|
nsStyleContext* aStyleContext,
|
|
nsView* aView,
|
|
uint32_t aFlags)
|
|
{
|
|
NS_ASSERTION(!aStyleContext || aFrame->StyleContext() == aStyleContext,
|
|
"Wrong style context for frame?");
|
|
|
|
if (!aView) {
|
|
return;
|
|
}
|
|
|
|
nsViewManager* vm = aView->GetViewManager();
|
|
|
|
if (nullptr == aStyleContext) {
|
|
aStyleContext = aFrame->StyleContext();
|
|
}
|
|
|
|
// Make sure visibility is correct. This only affects nsSubdocumentFrame.
|
|
if (0 == (aFlags & NS_FRAME_NO_VISIBILITY) &&
|
|
!aFrame->SupportsVisibilityHidden()) {
|
|
// See if the view should be hidden or visible
|
|
vm->SetViewVisibility(aView,
|
|
aStyleContext->StyleVisibility()->IsVisible()
|
|
? nsViewVisibility_kShow : nsViewVisibility_kHide);
|
|
}
|
|
|
|
int32_t zIndex = 0;
|
|
bool autoZIndex = false;
|
|
|
|
if (aFrame->IsAbsPosContaininingBlock()) {
|
|
// Make sure z-index is correct
|
|
const nsStylePosition* position = aStyleContext->StylePosition();
|
|
|
|
if (position->mZIndex.GetUnit() == eStyleUnit_Integer) {
|
|
zIndex = position->mZIndex.GetIntValue();
|
|
} else if (position->mZIndex.GetUnit() == eStyleUnit_Auto) {
|
|
autoZIndex = true;
|
|
}
|
|
} else {
|
|
autoZIndex = true;
|
|
}
|
|
|
|
vm->SetViewZIndex(aView, autoZIndex, zIndex);
|
|
}
|
|
|
|
static nscoord GetCoord(const nsStyleCoord& aCoord, nscoord aIfNotCoord)
|
|
{
|
|
if (aCoord.ConvertsToLength()) {
|
|
return nsRuleNode::ComputeCoordPercentCalc(aCoord, 0);
|
|
}
|
|
return aIfNotCoord;
|
|
}
|
|
|
|
void
|
|
nsContainerFrame::DoInlineIntrinsicISize(nsRenderingContext *aRenderingContext,
|
|
InlineIntrinsicISizeData *aData,
|
|
nsLayoutUtils::IntrinsicISizeType aType)
|
|
{
|
|
if (GetPrevInFlow())
|
|
return; // Already added.
|
|
|
|
NS_PRECONDITION(aType == nsLayoutUtils::MIN_ISIZE ||
|
|
aType == nsLayoutUtils::PREF_ISIZE, "bad type");
|
|
|
|
WritingMode wm = GetWritingMode();
|
|
mozilla::css::Side startSide =
|
|
wm.PhysicalSideForInlineAxis(eLogicalEdgeStart);
|
|
mozilla::css::Side endSide =
|
|
wm.PhysicalSideForInlineAxis(eLogicalEdgeEnd);
|
|
|
|
const nsStylePadding *stylePadding = StylePadding();
|
|
const nsStyleBorder *styleBorder = StyleBorder();
|
|
const nsStyleMargin *styleMargin = StyleMargin();
|
|
|
|
// This goes at the beginning no matter how things are broken and how
|
|
// messy the bidi situations are, since per CSS2.1 section 8.6
|
|
// (implemented in bug 328168), the startSide border is always on the
|
|
// first line.
|
|
// This frame is a first-in-flow, but it might have a previous bidi
|
|
// continuation, in which case that continuation should handle the startSide
|
|
// border.
|
|
// For box-decoration-break:clone we setup clonePBM = startPBM + endPBM and
|
|
// add that to each line. For box-decoration-break:slice clonePBM is zero.
|
|
nscoord clonePBM = 0; // PBM = PaddingBorderMargin
|
|
const bool sliceBreak =
|
|
styleBorder->mBoxDecorationBreak == NS_STYLE_BOX_DECORATION_BREAK_SLICE;
|
|
if (!GetPrevContinuation()) {
|
|
nscoord startPBM =
|
|
// clamp negative calc() to 0
|
|
std::max(GetCoord(stylePadding->mPadding.Get(startSide), 0), 0) +
|
|
styleBorder->GetComputedBorderWidth(startSide) +
|
|
GetCoord(styleMargin->mMargin.Get(startSide), 0);
|
|
if (MOZ_LIKELY(sliceBreak)) {
|
|
aData->currentLine += startPBM;
|
|
} else {
|
|
clonePBM = startPBM;
|
|
}
|
|
}
|
|
|
|
nscoord endPBM =
|
|
// clamp negative calc() to 0
|
|
std::max(GetCoord(stylePadding->mPadding.Get(endSide), 0), 0) +
|
|
styleBorder->GetComputedBorderWidth(endSide) +
|
|
GetCoord(styleMargin->mMargin.Get(endSide), 0);
|
|
if (MOZ_UNLIKELY(!sliceBreak)) {
|
|
clonePBM += endPBM;
|
|
}
|
|
|
|
const nsLineList_iterator* savedLine = aData->line;
|
|
nsIFrame* const savedLineContainer = aData->LineContainer();
|
|
|
|
nsContainerFrame *lastInFlow;
|
|
for (nsContainerFrame *nif = this; nif;
|
|
nif = static_cast<nsContainerFrame*>(nif->GetNextInFlow())) {
|
|
if (aData->currentLine == 0) {
|
|
aData->currentLine = clonePBM;
|
|
}
|
|
for (nsIFrame* kid : nif->mFrames) {
|
|
if (aType == nsLayoutUtils::MIN_ISIZE)
|
|
kid->AddInlineMinISize(aRenderingContext,
|
|
static_cast<InlineMinISizeData*>(aData));
|
|
else
|
|
kid->AddInlinePrefISize(aRenderingContext,
|
|
static_cast<InlinePrefISizeData*>(aData));
|
|
}
|
|
|
|
// After we advance to our next-in-flow, the stored line and line container
|
|
// may no longer be correct. Just forget them.
|
|
aData->line = nullptr;
|
|
aData->SetLineContainer(nullptr);
|
|
|
|
lastInFlow = nif;
|
|
}
|
|
|
|
aData->line = savedLine;
|
|
aData->SetLineContainer(savedLineContainer);
|
|
|
|
// This goes at the end no matter how things are broken and how
|
|
// messy the bidi situations are, since per CSS2.1 section 8.6
|
|
// (implemented in bug 328168), the endSide border is always on the
|
|
// last line.
|
|
// We reached the last-in-flow, but it might have a next bidi
|
|
// continuation, in which case that continuation should handle
|
|
// the endSide border.
|
|
if (MOZ_LIKELY(!lastInFlow->GetNextContinuation() && sliceBreak)) {
|
|
aData->currentLine += endPBM;
|
|
}
|
|
}
|
|
|
|
/* virtual */
|
|
LogicalSize
|
|
nsContainerFrame::ComputeAutoSize(nsRenderingContext* aRenderingContext,
|
|
WritingMode aWM,
|
|
const LogicalSize& aCBSize,
|
|
nscoord aAvailableISize,
|
|
const LogicalSize& aMargin,
|
|
const LogicalSize& aBorder,
|
|
const LogicalSize& aPadding,
|
|
bool aShrinkWrap)
|
|
{
|
|
LogicalSize result(aWM, 0xdeadbeef, NS_UNCONSTRAINEDSIZE);
|
|
nscoord availBased = aAvailableISize - aMargin.ISize(aWM) -
|
|
aBorder.ISize(aWM) - aPadding.ISize(aWM);
|
|
// replaced elements always shrink-wrap
|
|
if (aShrinkWrap || IsFrameOfType(eReplaced)) {
|
|
// don't bother setting it if the result won't be used
|
|
if (StylePosition()->ISize(aWM).GetUnit() == eStyleUnit_Auto) {
|
|
result.ISize(aWM) = ShrinkWidthToFit(aRenderingContext, availBased);
|
|
}
|
|
} else {
|
|
result.ISize(aWM) = availBased;
|
|
}
|
|
|
|
if (IsTableCaption()) {
|
|
// If we're a container for font size inflation, then shrink
|
|
// wrapping inside of us should not apply font size inflation.
|
|
AutoMaybeDisableFontInflation an(this);
|
|
|
|
WritingMode tableWM = GetParent()->GetWritingMode();
|
|
uint8_t captionSide = StyleTableBorder()->mCaptionSide;
|
|
|
|
if (aWM.IsOrthogonalTo(tableWM)) {
|
|
if (captionSide == NS_STYLE_CAPTION_SIDE_TOP ||
|
|
captionSide == NS_STYLE_CAPTION_SIDE_TOP_OUTSIDE ||
|
|
captionSide == NS_STYLE_CAPTION_SIDE_BOTTOM ||
|
|
captionSide == NS_STYLE_CAPTION_SIDE_BOTTOM_OUTSIDE) {
|
|
// For an orthogonal caption on a block-dir side of the table,
|
|
// shrink-wrap to min-isize.
|
|
result.ISize(aWM) = GetMinISize(aRenderingContext);
|
|
} else {
|
|
// An orthogonal caption on an inline-dir side of the table
|
|
// is constrained to the containing block.
|
|
nscoord pref = GetPrefISize(aRenderingContext);
|
|
if (pref > aCBSize.ISize(aWM)) {
|
|
pref = aCBSize.ISize(aWM);
|
|
}
|
|
if (pref < result.ISize(aWM)) {
|
|
result.ISize(aWM) = pref;
|
|
}
|
|
}
|
|
} else {
|
|
if (captionSide == NS_STYLE_CAPTION_SIDE_LEFT ||
|
|
captionSide == NS_STYLE_CAPTION_SIDE_RIGHT) {
|
|
result.ISize(aWM) = GetMinISize(aRenderingContext);
|
|
} else if (captionSide == NS_STYLE_CAPTION_SIDE_TOP ||
|
|
captionSide == NS_STYLE_CAPTION_SIDE_BOTTOM) {
|
|
// The outer frame constrains our available isize to the isize of
|
|
// the table. Grow if our min-isize is bigger than that, but not
|
|
// larger than the containing block isize. (It would really be nice
|
|
// to transmit that information another way, so we could grow up to
|
|
// the table's available isize, but that's harder.)
|
|
nscoord min = GetMinISize(aRenderingContext);
|
|
if (min > aCBSize.ISize(aWM)) {
|
|
min = aCBSize.ISize(aWM);
|
|
}
|
|
if (min > result.ISize(aWM)) {
|
|
result.ISize(aWM) = min;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
void
|
|
nsContainerFrame::ReflowChild(nsIFrame* aKidFrame,
|
|
nsPresContext* aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
const nsHTMLReflowState& aReflowState,
|
|
const WritingMode& aWM,
|
|
const LogicalPoint& aPos,
|
|
const nsSize& aContainerSize,
|
|
uint32_t aFlags,
|
|
nsReflowStatus& aStatus,
|
|
nsOverflowContinuationTracker* aTracker)
|
|
{
|
|
NS_PRECONDITION(aReflowState.frame == aKidFrame, "bad reflow state");
|
|
if (aWM.IsVerticalRL() || (!aWM.IsVertical() && !aWM.IsBidiLTR())) {
|
|
NS_ASSERTION(aContainerSize.width != NS_UNCONSTRAINEDSIZE,
|
|
"ReflowChild with unconstrained container width!");
|
|
}
|
|
|
|
// Position the child frame and its view if requested.
|
|
if (NS_FRAME_NO_MOVE_FRAME != (aFlags & NS_FRAME_NO_MOVE_FRAME)) {
|
|
aKidFrame->SetPosition(aWM, aPos, aContainerSize);
|
|
}
|
|
|
|
if (0 == (aFlags & NS_FRAME_NO_MOVE_VIEW)) {
|
|
PositionFrameView(aKidFrame);
|
|
}
|
|
|
|
// Reflow the child frame
|
|
aKidFrame->Reflow(aPresContext, aDesiredSize, aReflowState, aStatus);
|
|
|
|
// If the child frame is complete, delete any next-in-flows,
|
|
// but only if the NO_DELETE_NEXT_IN_FLOW flag isn't set.
|
|
if (NS_FRAME_IS_FULLY_COMPLETE(aStatus) &&
|
|
!(aFlags & NS_FRAME_NO_DELETE_NEXT_IN_FLOW_CHILD)) {
|
|
nsIFrame* kidNextInFlow = aKidFrame->GetNextInFlow();
|
|
if (kidNextInFlow) {
|
|
// Remove all of the childs next-in-flows. Make sure that we ask
|
|
// the right parent to do the removal (it's possible that the
|
|
// parent is not this because we are executing pullup code)
|
|
nsOverflowContinuationTracker::AutoFinish fini(aTracker, aKidFrame);
|
|
kidNextInFlow->GetParent()->DeleteNextInFlowChild(kidNextInFlow, true);
|
|
}
|
|
}
|
|
}
|
|
|
|
//XXX temporary: hold on to a copy of the old physical version of
|
|
// ReflowChild so that we can convert callers incrementally.
|
|
void
|
|
nsContainerFrame::ReflowChild(nsIFrame* aKidFrame,
|
|
nsPresContext* aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nscoord aX,
|
|
nscoord aY,
|
|
uint32_t aFlags,
|
|
nsReflowStatus& aStatus,
|
|
nsOverflowContinuationTracker* aTracker)
|
|
{
|
|
NS_PRECONDITION(aReflowState.frame == aKidFrame, "bad reflow state");
|
|
|
|
// Position the child frame and its view if requested.
|
|
if (NS_FRAME_NO_MOVE_FRAME != (aFlags & NS_FRAME_NO_MOVE_FRAME)) {
|
|
aKidFrame->SetPosition(nsPoint(aX, aY));
|
|
}
|
|
|
|
if (0 == (aFlags & NS_FRAME_NO_MOVE_VIEW)) {
|
|
PositionFrameView(aKidFrame);
|
|
}
|
|
|
|
// Reflow the child frame
|
|
aKidFrame->Reflow(aPresContext, aDesiredSize, aReflowState, aStatus);
|
|
|
|
// If the child frame is complete, delete any next-in-flows,
|
|
// but only if the NO_DELETE_NEXT_IN_FLOW flag isn't set.
|
|
if (NS_FRAME_IS_FULLY_COMPLETE(aStatus) &&
|
|
!(aFlags & NS_FRAME_NO_DELETE_NEXT_IN_FLOW_CHILD)) {
|
|
nsIFrame* kidNextInFlow = aKidFrame->GetNextInFlow();
|
|
if (kidNextInFlow) {
|
|
// Remove all of the childs next-in-flows. Make sure that we ask
|
|
// the right parent to do the removal (it's possible that the
|
|
// parent is not this because we are executing pullup code)
|
|
nsOverflowContinuationTracker::AutoFinish fini(aTracker, aKidFrame);
|
|
kidNextInFlow->GetParent()->DeleteNextInFlowChild(kidNextInFlow, true);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Position the views of |aFrame|'s descendants. A container frame
|
|
* should call this method if it moves a frame after |Reflow|.
|
|
*/
|
|
void
|
|
nsContainerFrame::PositionChildViews(nsIFrame* aFrame)
|
|
{
|
|
if (!(aFrame->GetStateBits() & NS_FRAME_HAS_CHILD_WITH_VIEW)) {
|
|
return;
|
|
}
|
|
|
|
// Recursively walk aFrame's child frames.
|
|
// Process the additional child lists, but skip the popup list as the
|
|
// view for popups is managed by the parent. Currently only nsMenuFrame
|
|
// and nsPopupSetFrame have a popupList and during layout will adjust the
|
|
// view manually to position the popup.
|
|
ChildListIterator lists(aFrame);
|
|
for (; !lists.IsDone(); lists.Next()) {
|
|
if (lists.CurrentID() == kPopupList) {
|
|
continue;
|
|
}
|
|
nsFrameList::Enumerator childFrames(lists.CurrentList());
|
|
for (; !childFrames.AtEnd(); childFrames.Next()) {
|
|
// Position the frame's view (if it has one) otherwise recursively
|
|
// process its children
|
|
nsIFrame* childFrame = childFrames.get();
|
|
if (childFrame->HasView()) {
|
|
PositionFrameView(childFrame);
|
|
} else {
|
|
PositionChildViews(childFrame);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* The second half of frame reflow. Does the following:
|
|
* - sets the frame's bounds
|
|
* - sizes and positions (if requested) the frame's view. If the frame's final
|
|
* position differs from the current position and the frame itself does not
|
|
* have a view, then any child frames with views are positioned so they stay
|
|
* in sync
|
|
* - sets the view's visibility, opacity, content transparency, and clip
|
|
* - invoked the DidReflow() function
|
|
*
|
|
* Flags:
|
|
* NS_FRAME_NO_MOVE_FRAME - don't move the frame. aX and aY are ignored in this
|
|
* case. Also implies NS_FRAME_NO_MOVE_VIEW
|
|
* NS_FRAME_NO_MOVE_VIEW - don't position the frame's view. Set this if you
|
|
* don't want to automatically sync the frame and view
|
|
* NS_FRAME_NO_SIZE_VIEW - don't size the frame's view
|
|
*/
|
|
void
|
|
nsContainerFrame::FinishReflowChild(nsIFrame* aKidFrame,
|
|
nsPresContext* aPresContext,
|
|
const nsHTMLReflowMetrics& aDesiredSize,
|
|
const nsHTMLReflowState* aReflowState,
|
|
const WritingMode& aWM,
|
|
const LogicalPoint& aPos,
|
|
const nsSize& aContainerSize,
|
|
uint32_t aFlags)
|
|
{
|
|
if (aWM.IsVerticalRL() || (!aWM.IsVertical() && !aWM.IsBidiLTR())) {
|
|
NS_ASSERTION(aContainerSize.width != NS_UNCONSTRAINEDSIZE,
|
|
"FinishReflowChild with unconstrained container width!");
|
|
}
|
|
|
|
nsPoint curOrigin = aKidFrame->GetPosition();
|
|
WritingMode outerWM = aDesiredSize.GetWritingMode();
|
|
LogicalSize convertedSize = aDesiredSize.Size(outerWM).ConvertTo(aWM,
|
|
outerWM);
|
|
|
|
if (NS_FRAME_NO_MOVE_FRAME != (aFlags & NS_FRAME_NO_MOVE_FRAME)) {
|
|
aKidFrame->SetRect(aWM, LogicalRect(aWM, aPos, convertedSize),
|
|
aContainerSize);
|
|
} else {
|
|
aKidFrame->SetSize(aWM, convertedSize);
|
|
}
|
|
|
|
if (aKidFrame->HasView()) {
|
|
nsView* view = aKidFrame->GetView();
|
|
// Make sure the frame's view is properly sized and positioned and has
|
|
// things like opacity correct
|
|
SyncFrameViewAfterReflow(aPresContext, aKidFrame, view,
|
|
aDesiredSize.VisualOverflow(), aFlags);
|
|
}
|
|
|
|
nsPoint newOrigin = aKidFrame->GetPosition();
|
|
if (!(aFlags & NS_FRAME_NO_MOVE_VIEW) && curOrigin != newOrigin) {
|
|
if (!aKidFrame->HasView()) {
|
|
// If the frame has moved, then we need to make sure any child views are
|
|
// correctly positioned
|
|
PositionChildViews(aKidFrame);
|
|
}
|
|
}
|
|
|
|
aKidFrame->DidReflow(aPresContext, aReflowState, nsDidReflowStatus::FINISHED);
|
|
}
|
|
|
|
//XXX temporary: hold on to a copy of the old physical version of
|
|
// FinishReflowChild so that we can convert callers incrementally.
|
|
void
|
|
nsContainerFrame::FinishReflowChild(nsIFrame* aKidFrame,
|
|
nsPresContext* aPresContext,
|
|
const nsHTMLReflowMetrics& aDesiredSize,
|
|
const nsHTMLReflowState* aReflowState,
|
|
nscoord aX,
|
|
nscoord aY,
|
|
uint32_t aFlags)
|
|
{
|
|
nsPoint curOrigin = aKidFrame->GetPosition();
|
|
|
|
if (NS_FRAME_NO_MOVE_FRAME != (aFlags & NS_FRAME_NO_MOVE_FRAME)) {
|
|
aKidFrame->SetRect(nsRect(aX, aY, aDesiredSize.Width(), aDesiredSize.Height()));
|
|
} else {
|
|
aKidFrame->SetSize(nsSize(aDesiredSize.Width(), aDesiredSize.Height()));
|
|
}
|
|
|
|
if (aKidFrame->HasView()) {
|
|
nsView* view = aKidFrame->GetView();
|
|
// Make sure the frame's view is properly sized and positioned and has
|
|
// things like opacity correct
|
|
SyncFrameViewAfterReflow(aPresContext, aKidFrame, view,
|
|
aDesiredSize.VisualOverflow(), aFlags);
|
|
}
|
|
|
|
if (!(aFlags & NS_FRAME_NO_MOVE_VIEW) &&
|
|
(curOrigin.x != aX || curOrigin.y != aY)) {
|
|
if (!aKidFrame->HasView()) {
|
|
// If the frame has moved, then we need to make sure any child views are
|
|
// correctly positioned
|
|
PositionChildViews(aKidFrame);
|
|
}
|
|
}
|
|
|
|
aKidFrame->DidReflow(aPresContext, aReflowState, nsDidReflowStatus::FINISHED);
|
|
}
|
|
|
|
void
|
|
nsContainerFrame::ReflowOverflowContainerChildren(nsPresContext* aPresContext,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsOverflowAreas& aOverflowRects,
|
|
uint32_t aFlags,
|
|
nsReflowStatus& aStatus)
|
|
{
|
|
NS_PRECONDITION(aPresContext, "null pointer");
|
|
|
|
nsFrameList* overflowContainers =
|
|
GetPropTableFrames(OverflowContainersProperty());
|
|
|
|
NS_ASSERTION(!(overflowContainers && GetPrevInFlow()
|
|
&& static_cast<nsContainerFrame*>(GetPrevInFlow())
|
|
->GetPropTableFrames(ExcessOverflowContainersProperty())),
|
|
"conflicting overflow containers lists");
|
|
|
|
if (!overflowContainers) {
|
|
// Drain excess from previnflow
|
|
nsContainerFrame* prev = (nsContainerFrame*) GetPrevInFlow();
|
|
if (prev) {
|
|
nsFrameList* excessFrames =
|
|
prev->RemovePropTableFrames(ExcessOverflowContainersProperty());
|
|
if (excessFrames) {
|
|
excessFrames->ApplySetParent(this);
|
|
nsContainerFrame::ReparentFrameViewList(*excessFrames, prev, this);
|
|
overflowContainers = excessFrames;
|
|
SetPropTableFrames(overflowContainers, OverflowContainersProperty());
|
|
}
|
|
}
|
|
}
|
|
|
|
// Our own excess overflow containers from a previous reflow can still be
|
|
// present if our next-in-flow hasn't been reflown yet.
|
|
nsFrameList* selfExcessOCFrames =
|
|
RemovePropTableFrames(ExcessOverflowContainersProperty());
|
|
if (selfExcessOCFrames) {
|
|
if (overflowContainers) {
|
|
overflowContainers->AppendFrames(nullptr, *selfExcessOCFrames);
|
|
selfExcessOCFrames->Delete(aPresContext->PresShell());
|
|
} else {
|
|
overflowContainers = selfExcessOCFrames;
|
|
SetPropTableFrames(overflowContainers, OverflowContainersProperty());
|
|
}
|
|
}
|
|
if (!overflowContainers) {
|
|
return; // nothing to reflow
|
|
}
|
|
|
|
nsOverflowContinuationTracker tracker(this, false, false);
|
|
bool shouldReflowAllKids = aReflowState.ShouldReflowAllKids();
|
|
|
|
for (nsIFrame* frame : *overflowContainers) {
|
|
if (frame->GetPrevInFlow()->GetParent() != GetPrevInFlow()) {
|
|
// frame's prevInFlow has moved, skip reflowing this frame;
|
|
// it will get reflowed once it's been placed
|
|
continue;
|
|
}
|
|
// If the available vertical height has changed, we need to reflow
|
|
// even if the frame isn't dirty.
|
|
if (shouldReflowAllKids || NS_SUBTREE_DIRTY(frame)) {
|
|
// Get prev-in-flow
|
|
nsIFrame* prevInFlow = frame->GetPrevInFlow();
|
|
NS_ASSERTION(prevInFlow,
|
|
"overflow container frame must have a prev-in-flow");
|
|
NS_ASSERTION(frame->GetStateBits() & NS_FRAME_IS_OVERFLOW_CONTAINER,
|
|
"overflow container frame must have overflow container bit set");
|
|
WritingMode wm = frame->GetWritingMode();
|
|
nsSize containerSize = aReflowState.AvailableSize(wm).GetPhysicalSize(wm);
|
|
LogicalRect prevRect = prevInFlow->GetLogicalRect(wm, containerSize);
|
|
|
|
// Initialize reflow params
|
|
LogicalSize availSpace(wm, prevRect.ISize(wm),
|
|
aReflowState.AvailableSize(wm).BSize(wm));
|
|
nsHTMLReflowMetrics desiredSize(aReflowState);
|
|
nsHTMLReflowState frameState(aPresContext, aReflowState,
|
|
frame, availSpace);
|
|
nsReflowStatus frameStatus;
|
|
|
|
// Reflow
|
|
LogicalPoint pos(wm, prevRect.IStart(wm), 0);
|
|
ReflowChild(frame, aPresContext, desiredSize, frameState,
|
|
wm, pos, containerSize, aFlags, frameStatus, &tracker);
|
|
//XXXfr Do we need to override any shrinkwrap effects here?
|
|
// e.g. desiredSize.Width() = prevRect.width;
|
|
FinishReflowChild(frame, aPresContext, desiredSize, &frameState,
|
|
wm, pos, containerSize, aFlags);
|
|
|
|
// Handle continuations
|
|
if (!NS_FRAME_IS_FULLY_COMPLETE(frameStatus)) {
|
|
if (frame->GetStateBits() & NS_FRAME_OUT_OF_FLOW) {
|
|
// Abspos frames can't cause their parent to be incomplete,
|
|
// only overflow incomplete.
|
|
NS_FRAME_SET_OVERFLOW_INCOMPLETE(frameStatus);
|
|
}
|
|
else {
|
|
NS_ASSERTION(NS_FRAME_IS_COMPLETE(frameStatus),
|
|
"overflow container frames can't be incomplete, only overflow-incomplete");
|
|
}
|
|
|
|
// Acquire a next-in-flow, creating it if necessary
|
|
nsIFrame* nif = frame->GetNextInFlow();
|
|
if (!nif) {
|
|
NS_ASSERTION(frameStatus & NS_FRAME_REFLOW_NEXTINFLOW,
|
|
"Someone forgot a REFLOW_NEXTINFLOW flag");
|
|
nif = aPresContext->PresShell()->FrameConstructor()->
|
|
CreateContinuingFrame(aPresContext, frame, this);
|
|
}
|
|
else if (!(nif->GetStateBits() & NS_FRAME_IS_OVERFLOW_CONTAINER)) {
|
|
// used to be a normal next-in-flow; steal it from the child list
|
|
nsresult rv = nif->GetParent()->StealFrame(nif);
|
|
if (NS_FAILED(rv)) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
tracker.Insert(nif, frameStatus);
|
|
}
|
|
NS_MergeReflowStatusInto(&aStatus, frameStatus);
|
|
// At this point it would be nice to assert !frame->GetOverflowRect().IsEmpty(),
|
|
// but we have some unsplittable frames that, when taller than
|
|
// availableHeight will push zero-height content into a next-in-flow.
|
|
}
|
|
else {
|
|
tracker.Skip(frame, aStatus);
|
|
if (aReflowState.mFloatManager) {
|
|
nsBlockFrame::RecoverFloatsFor(frame, *aReflowState.mFloatManager,
|
|
aReflowState.GetWritingMode(),
|
|
aReflowState.ComputedPhysicalSize());
|
|
}
|
|
}
|
|
ConsiderChildOverflow(aOverflowRects, frame);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsContainerFrame::DisplayOverflowContainers(nsDisplayListBuilder* aBuilder,
|
|
const nsRect& aDirtyRect,
|
|
const nsDisplayListSet& aLists)
|
|
{
|
|
nsFrameList* overflowconts = GetPropTableFrames(OverflowContainersProperty());
|
|
if (overflowconts) {
|
|
for (nsIFrame* frame : *overflowconts) {
|
|
BuildDisplayListForChild(aBuilder, frame, aDirtyRect, aLists);
|
|
}
|
|
}
|
|
}
|
|
|
|
static bool
|
|
TryRemoveFrame(nsIFrame* aFrame, FramePropertyTable* aPropTable,
|
|
nsContainerFrame::FrameListPropertyDescriptor aProp,
|
|
nsIFrame* aChildToRemove)
|
|
{
|
|
nsFrameList* list = aPropTable->Get(aFrame, aProp);
|
|
if (list && list->StartRemoveFrame(aChildToRemove)) {
|
|
// aChildToRemove *may* have been removed from this list.
|
|
if (list->IsEmpty()) {
|
|
aPropTable->Remove(aFrame, aProp);
|
|
list->Delete(aFrame->PresContext()->PresShell());
|
|
}
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
nsresult
|
|
nsContainerFrame::StealFrame(nsIFrame* aChild,
|
|
bool aForceNormal)
|
|
{
|
|
#ifdef DEBUG
|
|
if (!mFrames.ContainsFrame(aChild)) {
|
|
nsFrameList* list = GetOverflowFrames();
|
|
if (!list || !list->ContainsFrame(aChild)) {
|
|
FramePropertyTable* propTable = PresContext()->PropertyTable();
|
|
list = propTable->Get(this, OverflowContainersProperty());
|
|
if (!list || !list->ContainsFrame(aChild)) {
|
|
list = propTable->Get(this, ExcessOverflowContainersProperty());
|
|
MOZ_ASSERT(list && list->ContainsFrame(aChild), "aChild isn't our child"
|
|
" or on a frame list not supported by StealFrame");
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
bool removed;
|
|
if ((aChild->GetStateBits() & NS_FRAME_IS_OVERFLOW_CONTAINER)
|
|
&& !aForceNormal) {
|
|
FramePropertyTable* propTable = PresContext()->PropertyTable();
|
|
// Try removing from the overflow container list.
|
|
removed = ::TryRemoveFrame(this, propTable, OverflowContainersProperty(),
|
|
aChild);
|
|
if (!removed) {
|
|
// It must be in the excess overflow container list.
|
|
removed = ::TryRemoveFrame(this, propTable,
|
|
ExcessOverflowContainersProperty(),
|
|
aChild);
|
|
}
|
|
} else {
|
|
removed = mFrames.StartRemoveFrame(aChild);
|
|
if (!removed) {
|
|
// We didn't find the child in our principal child list.
|
|
// Maybe it's on the overflow list?
|
|
nsFrameList* frameList = GetOverflowFrames();
|
|
if (frameList) {
|
|
removed = frameList->ContinueRemoveFrame(aChild);
|
|
if (frameList->IsEmpty()) {
|
|
DestroyOverflowList();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
NS_POSTCONDITION(removed, "StealFrame: can't find aChild");
|
|
return removed ? NS_OK : NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
nsFrameList
|
|
nsContainerFrame::StealFramesAfter(nsIFrame* aChild)
|
|
{
|
|
NS_ASSERTION(!aChild ||
|
|
!(aChild->GetStateBits() & NS_FRAME_IS_OVERFLOW_CONTAINER),
|
|
"StealFramesAfter doesn't handle overflow containers");
|
|
NS_ASSERTION(GetType() != nsGkAtoms::blockFrame, "unexpected call");
|
|
|
|
if (!aChild) {
|
|
nsFrameList copy(mFrames);
|
|
mFrames.Clear();
|
|
return copy;
|
|
}
|
|
|
|
for (nsFrameList::FrameLinkEnumerator iter(mFrames); !iter.AtEnd();
|
|
iter.Next()) {
|
|
if (iter.PrevFrame() == aChild) {
|
|
return mFrames.ExtractTail(iter);
|
|
}
|
|
}
|
|
|
|
// We didn't find the child in the principal child list.
|
|
// Maybe it's on the overflow list?
|
|
nsFrameList* overflowFrames = GetOverflowFrames();
|
|
if (overflowFrames) {
|
|
for (nsFrameList::FrameLinkEnumerator iter(*overflowFrames); !iter.AtEnd();
|
|
iter.Next()) {
|
|
if (iter.PrevFrame() == aChild) {
|
|
return overflowFrames->ExtractTail(iter);
|
|
}
|
|
}
|
|
}
|
|
|
|
NS_ERROR("StealFramesAfter: can't find aChild");
|
|
return nsFrameList::EmptyList();
|
|
}
|
|
|
|
/*
|
|
* Create a next-in-flow for aFrame. Will return the newly created
|
|
* frame <b>if and only if</b> a new frame is created; otherwise
|
|
* nullptr is returned.
|
|
*/
|
|
nsIFrame*
|
|
nsContainerFrame::CreateNextInFlow(nsIFrame* aFrame)
|
|
{
|
|
NS_PRECONDITION(GetType() != nsGkAtoms::blockFrame,
|
|
"you should have called nsBlockFrame::CreateContinuationFor instead");
|
|
NS_PRECONDITION(mFrames.ContainsFrame(aFrame), "expected an in-flow child frame");
|
|
|
|
nsPresContext* pc = PresContext();
|
|
nsIFrame* nextInFlow = aFrame->GetNextInFlow();
|
|
if (nullptr == nextInFlow) {
|
|
// Create a continuation frame for the child frame and insert it
|
|
// into our child list.
|
|
nextInFlow = pc->PresShell()->FrameConstructor()->
|
|
CreateContinuingFrame(pc, aFrame, this);
|
|
mFrames.InsertFrame(nullptr, aFrame, nextInFlow);
|
|
|
|
NS_FRAME_LOG(NS_FRAME_TRACE_NEW_FRAMES,
|
|
("nsContainerFrame::CreateNextInFlow: frame=%p nextInFlow=%p",
|
|
aFrame, nextInFlow));
|
|
|
|
return nextInFlow;
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
/**
|
|
* Remove and delete aNextInFlow and its next-in-flows. Updates the sibling and flow
|
|
* pointers
|
|
*/
|
|
void
|
|
nsContainerFrame::DeleteNextInFlowChild(nsIFrame* aNextInFlow,
|
|
bool aDeletingEmptyFrames)
|
|
{
|
|
#ifdef DEBUG
|
|
nsIFrame* prevInFlow = aNextInFlow->GetPrevInFlow();
|
|
#endif
|
|
NS_PRECONDITION(prevInFlow, "bad prev-in-flow");
|
|
|
|
// If the next-in-flow has a next-in-flow then delete it, too (and
|
|
// delete it first).
|
|
// Do this in a loop so we don't overflow the stack for frames
|
|
// with very many next-in-flows
|
|
nsIFrame* nextNextInFlow = aNextInFlow->GetNextInFlow();
|
|
if (nextNextInFlow) {
|
|
nsAutoTArray<nsIFrame*, 8> frames;
|
|
for (nsIFrame* f = nextNextInFlow; f; f = f->GetNextInFlow()) {
|
|
frames.AppendElement(f);
|
|
}
|
|
for (int32_t i = frames.Length() - 1; i >= 0; --i) {
|
|
nsIFrame* delFrame = frames.ElementAt(i);
|
|
delFrame->GetParent()->
|
|
DeleteNextInFlowChild(delFrame, aDeletingEmptyFrames);
|
|
}
|
|
}
|
|
|
|
// Take the next-in-flow out of the parent's child list
|
|
DebugOnly<nsresult> rv = StealFrame(aNextInFlow);
|
|
NS_ASSERTION(NS_SUCCEEDED(rv), "StealFrame failure");
|
|
|
|
#ifdef DEBUG
|
|
if (aDeletingEmptyFrames) {
|
|
nsLayoutUtils::AssertTreeOnlyEmptyNextInFlows(aNextInFlow);
|
|
}
|
|
#endif
|
|
|
|
// Delete the next-in-flow frame and its descendants. This will also
|
|
// remove it from its next-in-flow/prev-in-flow chain.
|
|
aNextInFlow->Destroy();
|
|
|
|
NS_POSTCONDITION(!prevInFlow->GetNextInFlow(), "non null next-in-flow");
|
|
}
|
|
|
|
/**
|
|
* Set the frames on the overflow list
|
|
*/
|
|
void
|
|
nsContainerFrame::SetOverflowFrames(const nsFrameList& aOverflowFrames)
|
|
{
|
|
NS_PRECONDITION(aOverflowFrames.NotEmpty(), "Shouldn't be called");
|
|
|
|
nsPresContext* pc = PresContext();
|
|
nsFrameList* newList = new (pc->PresShell()) nsFrameList(aOverflowFrames);
|
|
|
|
pc->PropertyTable()->Set(this, OverflowProperty(), newList);
|
|
}
|
|
|
|
nsFrameList*
|
|
nsContainerFrame::GetPropTableFrames(
|
|
FrameListPropertyDescriptor aProperty) const
|
|
{
|
|
return PresContext()->PropertyTable()->Get(this, aProperty);
|
|
}
|
|
|
|
nsFrameList*
|
|
nsContainerFrame::RemovePropTableFrames(FrameListPropertyDescriptor aProperty)
|
|
{
|
|
return PresContext()->PropertyTable()->Remove(this, aProperty);
|
|
}
|
|
|
|
void
|
|
nsContainerFrame::SetPropTableFrames(nsFrameList* aFrameList,
|
|
FrameListPropertyDescriptor aProperty)
|
|
{
|
|
NS_PRECONDITION(aProperty && aFrameList, "null ptr");
|
|
NS_PRECONDITION(
|
|
(aProperty != nsContainerFrame::OverflowContainersProperty() &&
|
|
aProperty != nsContainerFrame::ExcessOverflowContainersProperty()) ||
|
|
IsFrameOfType(nsIFrame::eCanContainOverflowContainers),
|
|
"this type of frame can't have overflow containers");
|
|
MOZ_ASSERT(!GetPropTableFrames(aProperty));
|
|
PresContext()->PropertyTable()->Set(this, aProperty, aFrameList);
|
|
}
|
|
|
|
/**
|
|
* Push aFromChild and its next siblings to the next-in-flow. Change the
|
|
* geometric parent of each frame that's pushed. If there is no next-in-flow
|
|
* the frames are placed on the overflow list (and the geometric parent is
|
|
* left unchanged).
|
|
*
|
|
* Updates the next-in-flow's child count. Does <b>not</b> update the
|
|
* pusher's child count.
|
|
*
|
|
* @param aFromChild the first child frame to push. It is disconnected from
|
|
* aPrevSibling
|
|
* @param aPrevSibling aFromChild's previous sibling. Must not be null. It's
|
|
* an error to push a parent's first child frame
|
|
*/
|
|
void
|
|
nsContainerFrame::PushChildren(nsIFrame* aFromChild,
|
|
nsIFrame* aPrevSibling)
|
|
{
|
|
NS_PRECONDITION(aFromChild, "null pointer");
|
|
NS_PRECONDITION(aPrevSibling, "pushing first child");
|
|
NS_PRECONDITION(aPrevSibling->GetNextSibling() == aFromChild, "bad prev sibling");
|
|
|
|
// Disconnect aFromChild from its previous sibling
|
|
nsFrameList tail = mFrames.RemoveFramesAfter(aPrevSibling);
|
|
|
|
nsContainerFrame* nextInFlow =
|
|
static_cast<nsContainerFrame*>(GetNextInFlow());
|
|
if (nextInFlow) {
|
|
// XXX This is not a very good thing to do. If it gets removed
|
|
// then remove the copy of this routine that doesn't do this from
|
|
// nsInlineFrame.
|
|
// When pushing and pulling frames we need to check for whether any
|
|
// views need to be reparented.
|
|
for (nsIFrame* f = aFromChild; f; f = f->GetNextSibling()) {
|
|
nsContainerFrame::ReparentFrameView(f, this, nextInFlow);
|
|
}
|
|
nextInFlow->mFrames.InsertFrames(nextInFlow, nullptr, tail);
|
|
}
|
|
else {
|
|
// Add the frames to our overflow list
|
|
SetOverflowFrames(tail);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Moves any frames on the overflow lists (the prev-in-flow's overflow list and
|
|
* the receiver's overflow list) to the child list.
|
|
*
|
|
* Updates this frame's child count and content mapping.
|
|
*
|
|
* @return true if any frames were moved and false otherwise
|
|
*/
|
|
bool
|
|
nsContainerFrame::MoveOverflowToChildList()
|
|
{
|
|
bool result = false;
|
|
|
|
// Check for an overflow list with our prev-in-flow
|
|
nsContainerFrame* prevInFlow = (nsContainerFrame*)GetPrevInFlow();
|
|
if (nullptr != prevInFlow) {
|
|
AutoFrameListPtr prevOverflowFrames(PresContext(),
|
|
prevInFlow->StealOverflowFrames());
|
|
if (prevOverflowFrames) {
|
|
// Tables are special; they can have repeated header/footer
|
|
// frames on mFrames at this point.
|
|
NS_ASSERTION(mFrames.IsEmpty() || GetType() == nsGkAtoms::tableFrame,
|
|
"bad overflow list");
|
|
// When pushing and pulling frames we need to check for whether any
|
|
// views need to be reparented.
|
|
nsContainerFrame::ReparentFrameViewList(*prevOverflowFrames,
|
|
prevInFlow, this);
|
|
mFrames.AppendFrames(this, *prevOverflowFrames);
|
|
result = true;
|
|
}
|
|
}
|
|
|
|
// It's also possible that we have an overflow list for ourselves.
|
|
return DrainSelfOverflowList() || result;
|
|
}
|
|
|
|
bool
|
|
nsContainerFrame::DrainSelfOverflowList()
|
|
{
|
|
AutoFrameListPtr overflowFrames(PresContext(), StealOverflowFrames());
|
|
if (overflowFrames) {
|
|
mFrames.AppendFrames(nullptr, *overflowFrames);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
nsIFrame*
|
|
nsContainerFrame::GetNextInFlowChild(ContinuationTraversingState& aState,
|
|
bool* aIsInOverflow)
|
|
{
|
|
nsContainerFrame*& nextInFlow = aState.mNextInFlow;
|
|
while (nextInFlow) {
|
|
// See if there is any frame in the container
|
|
nsIFrame* frame = nextInFlow->mFrames.FirstChild();
|
|
if (frame) {
|
|
if (aIsInOverflow) {
|
|
*aIsInOverflow = false;
|
|
}
|
|
return frame;
|
|
}
|
|
// No frames in the principal list, try its overflow list
|
|
nsFrameList* overflowFrames = nextInFlow->GetOverflowFrames();
|
|
if (overflowFrames) {
|
|
if (aIsInOverflow) {
|
|
*aIsInOverflow = true;
|
|
}
|
|
return overflowFrames->FirstChild();
|
|
}
|
|
nextInFlow = static_cast<nsContainerFrame*>(nextInFlow->GetNextInFlow());
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
nsIFrame*
|
|
nsContainerFrame::PullNextInFlowChild(ContinuationTraversingState& aState)
|
|
{
|
|
bool isInOverflow;
|
|
nsIFrame* frame = GetNextInFlowChild(aState, &isInOverflow);
|
|
if (frame) {
|
|
nsContainerFrame* nextInFlow = aState.mNextInFlow;
|
|
if (isInOverflow) {
|
|
nsFrameList* overflowFrames = nextInFlow->GetOverflowFrames();
|
|
overflowFrames->RemoveFirstChild();
|
|
if (overflowFrames->IsEmpty()) {
|
|
nextInFlow->DestroyOverflowList();
|
|
}
|
|
} else {
|
|
nextInFlow->mFrames.RemoveFirstChild();
|
|
}
|
|
|
|
// Move the frame to the principal frame list of this container
|
|
mFrames.AppendFrame(this, frame);
|
|
// AppendFrame has reparented the frame, we need
|
|
// to reparent the frame view then.
|
|
nsContainerFrame::ReparentFrameView(frame, nextInFlow, this);
|
|
}
|
|
return frame;
|
|
}
|
|
|
|
bool
|
|
nsContainerFrame::ResolvedOrientationIsVertical()
|
|
{
|
|
uint8_t orient = StyleDisplay()->mOrient;
|
|
switch (orient) {
|
|
case NS_STYLE_ORIENT_HORIZONTAL:
|
|
return false;
|
|
case NS_STYLE_ORIENT_VERTICAL:
|
|
return true;
|
|
case NS_STYLE_ORIENT_INLINE:
|
|
return GetWritingMode().IsVertical();
|
|
case NS_STYLE_ORIENT_BLOCK:
|
|
return !GetWritingMode().IsVertical();
|
|
}
|
|
NS_NOTREACHED("unexpected -moz-orient value");
|
|
return false;
|
|
}
|
|
|
|
nsOverflowContinuationTracker::nsOverflowContinuationTracker(nsContainerFrame* aFrame,
|
|
bool aWalkOOFFrames,
|
|
bool aSkipOverflowContainerChildren)
|
|
: mOverflowContList(nullptr),
|
|
mPrevOverflowCont(nullptr),
|
|
mSentry(nullptr),
|
|
mParent(aFrame),
|
|
mSkipOverflowContainerChildren(aSkipOverflowContainerChildren),
|
|
mWalkOOFFrames(aWalkOOFFrames)
|
|
{
|
|
NS_PRECONDITION(aFrame, "null frame pointer");
|
|
SetupOverflowContList();
|
|
}
|
|
|
|
void
|
|
nsOverflowContinuationTracker::SetupOverflowContList()
|
|
{
|
|
NS_PRECONDITION(mParent, "null frame pointer");
|
|
NS_PRECONDITION(!mOverflowContList, "already have list");
|
|
nsContainerFrame* nif =
|
|
static_cast<nsContainerFrame*>(mParent->GetNextInFlow());
|
|
if (nif) {
|
|
mOverflowContList = nif->GetPropTableFrames(
|
|
nsContainerFrame::OverflowContainersProperty());
|
|
if (mOverflowContList) {
|
|
mParent = nif;
|
|
SetUpListWalker();
|
|
}
|
|
}
|
|
if (!mOverflowContList) {
|
|
mOverflowContList = mParent->GetPropTableFrames(
|
|
nsContainerFrame::ExcessOverflowContainersProperty());
|
|
if (mOverflowContList) {
|
|
SetUpListWalker();
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Helper function to walk past overflow continuations whose prev-in-flow
|
|
* isn't a normal child and to set mSentry and mPrevOverflowCont correctly.
|
|
*/
|
|
void
|
|
nsOverflowContinuationTracker::SetUpListWalker()
|
|
{
|
|
NS_ASSERTION(!mSentry && !mPrevOverflowCont,
|
|
"forgot to reset mSentry or mPrevOverflowCont");
|
|
if (mOverflowContList) {
|
|
nsIFrame* cur = mOverflowContList->FirstChild();
|
|
if (mSkipOverflowContainerChildren) {
|
|
while (cur && (cur->GetPrevInFlow()->GetStateBits()
|
|
& NS_FRAME_IS_OVERFLOW_CONTAINER)) {
|
|
mPrevOverflowCont = cur;
|
|
cur = cur->GetNextSibling();
|
|
}
|
|
while (cur && (!(cur->GetStateBits() & NS_FRAME_OUT_OF_FLOW)
|
|
== mWalkOOFFrames)) {
|
|
mPrevOverflowCont = cur;
|
|
cur = cur->GetNextSibling();
|
|
}
|
|
}
|
|
if (cur) {
|
|
mSentry = cur->GetPrevInFlow();
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Helper function to step forward through the overflow continuations list.
|
|
* Sets mSentry and mPrevOverflowCont, skipping over OOF or non-OOF frames
|
|
* as appropriate. May only be called when we have already set up an
|
|
* mOverflowContList; mOverflowContList cannot be null.
|
|
*/
|
|
void
|
|
nsOverflowContinuationTracker::StepForward()
|
|
{
|
|
NS_PRECONDITION(mOverflowContList, "null list");
|
|
|
|
// Step forward
|
|
if (mPrevOverflowCont) {
|
|
mPrevOverflowCont = mPrevOverflowCont->GetNextSibling();
|
|
}
|
|
else {
|
|
mPrevOverflowCont = mOverflowContList->FirstChild();
|
|
}
|
|
|
|
// Skip over oof or non-oof frames as appropriate
|
|
if (mSkipOverflowContainerChildren) {
|
|
nsIFrame* cur = mPrevOverflowCont->GetNextSibling();
|
|
while (cur && (!(cur->GetStateBits() & NS_FRAME_OUT_OF_FLOW)
|
|
== mWalkOOFFrames)) {
|
|
mPrevOverflowCont = cur;
|
|
cur = cur->GetNextSibling();
|
|
}
|
|
}
|
|
|
|
// Set up the sentry
|
|
mSentry = (mPrevOverflowCont->GetNextSibling())
|
|
? mPrevOverflowCont->GetNextSibling()->GetPrevInFlow()
|
|
: nullptr;
|
|
}
|
|
|
|
nsresult
|
|
nsOverflowContinuationTracker::Insert(nsIFrame* aOverflowCont,
|
|
nsReflowStatus& aReflowStatus)
|
|
{
|
|
NS_PRECONDITION(aOverflowCont, "null frame pointer");
|
|
NS_PRECONDITION(!mSkipOverflowContainerChildren || mWalkOOFFrames ==
|
|
!!(aOverflowCont->GetStateBits() & NS_FRAME_OUT_OF_FLOW),
|
|
"shouldn't insert frame that doesn't match walker type");
|
|
NS_PRECONDITION(aOverflowCont->GetPrevInFlow(),
|
|
"overflow containers must have a prev-in-flow");
|
|
nsresult rv = NS_OK;
|
|
bool reparented = false;
|
|
nsPresContext* presContext = aOverflowCont->PresContext();
|
|
bool addToList = !mSentry || aOverflowCont != mSentry->GetNextInFlow();
|
|
|
|
// If we have a list and aOverflowCont is already in it then don't try to
|
|
// add it again.
|
|
if (addToList && aOverflowCont->GetParent() == mParent &&
|
|
(aOverflowCont->GetStateBits() & NS_FRAME_IS_OVERFLOW_CONTAINER) &&
|
|
mOverflowContList && mOverflowContList->ContainsFrame(aOverflowCont)) {
|
|
addToList = false;
|
|
mPrevOverflowCont = aOverflowCont->GetPrevSibling();
|
|
}
|
|
|
|
if (addToList) {
|
|
if (aOverflowCont->GetStateBits() & NS_FRAME_IS_OVERFLOW_CONTAINER) {
|
|
// aOverflowCont is in some other overflow container list,
|
|
// steal it first
|
|
NS_ASSERTION(!(mOverflowContList &&
|
|
mOverflowContList->ContainsFrame(aOverflowCont)),
|
|
"overflow containers out of order");
|
|
rv = aOverflowCont->GetParent()->StealFrame(aOverflowCont);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
else {
|
|
aOverflowCont->AddStateBits(NS_FRAME_IS_OVERFLOW_CONTAINER);
|
|
}
|
|
if (!mOverflowContList) {
|
|
mOverflowContList = new (presContext->PresShell()) nsFrameList();
|
|
mParent->SetPropTableFrames(mOverflowContList,
|
|
nsContainerFrame::ExcessOverflowContainersProperty());
|
|
SetUpListWalker();
|
|
}
|
|
if (aOverflowCont->GetParent() != mParent) {
|
|
nsContainerFrame::ReparentFrameView(aOverflowCont,
|
|
aOverflowCont->GetParent(),
|
|
mParent);
|
|
reparented = true;
|
|
}
|
|
|
|
// If aOverflowCont has a prev/next-in-flow that might be in
|
|
// mOverflowContList we need to find it and insert after/before it to
|
|
// maintain the order amongst next-in-flows in this list.
|
|
nsIFrame* pif = aOverflowCont->GetPrevInFlow();
|
|
nsIFrame* nif = aOverflowCont->GetNextInFlow();
|
|
if ((pif && pif->GetParent() == mParent && pif != mPrevOverflowCont) ||
|
|
(nif && nif->GetParent() == mParent && mPrevOverflowCont)) {
|
|
for (nsFrameList::Enumerator e(*mOverflowContList); !e.AtEnd(); e.Next()) {
|
|
nsIFrame* f = e.get();
|
|
if (f == pif) {
|
|
mPrevOverflowCont = pif;
|
|
break;
|
|
}
|
|
if (f == nif) {
|
|
mPrevOverflowCont = f->GetPrevSibling();
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
mOverflowContList->InsertFrame(mParent, mPrevOverflowCont, aOverflowCont);
|
|
aReflowStatus |= NS_FRAME_REFLOW_NEXTINFLOW;
|
|
}
|
|
|
|
// If we need to reflow it, mark it dirty
|
|
if (aReflowStatus & NS_FRAME_REFLOW_NEXTINFLOW)
|
|
aOverflowCont->AddStateBits(NS_FRAME_IS_DIRTY);
|
|
|
|
// It's in our list, just step forward
|
|
StepForward();
|
|
NS_ASSERTION(mPrevOverflowCont == aOverflowCont ||
|
|
(mSkipOverflowContainerChildren &&
|
|
(mPrevOverflowCont->GetStateBits() & NS_FRAME_OUT_OF_FLOW) !=
|
|
(aOverflowCont->GetStateBits() & NS_FRAME_OUT_OF_FLOW)),
|
|
"OverflowContTracker in unexpected state");
|
|
|
|
if (addToList) {
|
|
// Convert all non-overflow-container continuations of aOverflowCont
|
|
// into overflow containers and move them to our overflow
|
|
// tracker. This preserves the invariant that the next-continuations
|
|
// of an overflow container are also overflow containers.
|
|
nsIFrame* f = aOverflowCont->GetNextContinuation();
|
|
if (f && (!(f->GetStateBits() & NS_FRAME_IS_OVERFLOW_CONTAINER) ||
|
|
(!reparented && f->GetParent() == mParent) ||
|
|
(reparented && f->GetParent() != mParent))) {
|
|
if (!(f->GetStateBits() & NS_FRAME_IS_OVERFLOW_CONTAINER)) {
|
|
rv = f->GetParent()->StealFrame(f);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
Insert(f, aReflowStatus);
|
|
}
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
void
|
|
nsOverflowContinuationTracker::BeginFinish(nsIFrame* aChild)
|
|
{
|
|
NS_PRECONDITION(aChild, "null ptr");
|
|
NS_PRECONDITION(aChild->GetNextInFlow(),
|
|
"supposed to call Finish *before* deleting next-in-flow!");
|
|
for (nsIFrame* f = aChild; f; f = f->GetNextInFlow()) {
|
|
// We'll update these in EndFinish after the next-in-flows are gone.
|
|
if (f == mPrevOverflowCont) {
|
|
mSentry = nullptr;
|
|
mPrevOverflowCont = nullptr;
|
|
break;
|
|
}
|
|
if (f == mSentry) {
|
|
mSentry = nullptr;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
nsOverflowContinuationTracker::EndFinish(nsIFrame* aChild)
|
|
{
|
|
if (!mOverflowContList) {
|
|
return;
|
|
}
|
|
// Forget mOverflowContList if it was deleted.
|
|
nsPresContext* pc = aChild->PresContext();
|
|
FramePropertyTable* propTable = pc->PropertyTable();
|
|
nsFrameList* eoc = propTable->Get(
|
|
mParent, nsContainerFrame::ExcessOverflowContainersProperty());
|
|
if (eoc != mOverflowContList) {
|
|
nsFrameList* oc = static_cast<nsFrameList*>(propTable->Get(mParent,
|
|
nsContainerFrame::OverflowContainersProperty()));
|
|
if (oc != mOverflowContList) {
|
|
// mOverflowContList was deleted
|
|
mPrevOverflowCont = nullptr;
|
|
mSentry = nullptr;
|
|
mParent = aChild->GetParent();
|
|
mOverflowContList = nullptr;
|
|
SetupOverflowContList();
|
|
return;
|
|
}
|
|
}
|
|
// The list survived, update mSentry if needed.
|
|
if (!mSentry) {
|
|
if (!mPrevOverflowCont) {
|
|
SetUpListWalker();
|
|
} else {
|
|
mozilla::AutoRestore<nsIFrame*> saved(mPrevOverflowCont);
|
|
// step backward to make StepForward() use our current mPrevOverflowCont
|
|
mPrevOverflowCont = mPrevOverflowCont->GetPrevSibling();
|
|
StepForward();
|
|
}
|
|
}
|
|
}
|
|
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
// Debugging
|
|
|
|
#ifdef DEBUG_FRAME_DUMP
|
|
void
|
|
nsContainerFrame::List(FILE* out, const char* aPrefix, uint32_t aFlags) const
|
|
{
|
|
nsCString str;
|
|
ListGeneric(str, aPrefix, aFlags);
|
|
|
|
// Output the children
|
|
bool outputOneList = false;
|
|
ChildListIterator lists(this);
|
|
for (; !lists.IsDone(); lists.Next()) {
|
|
if (outputOneList) {
|
|
str += aPrefix;
|
|
}
|
|
if (lists.CurrentID() != kPrincipalList) {
|
|
if (!outputOneList) {
|
|
str += "\n";
|
|
str += aPrefix;
|
|
}
|
|
str += nsPrintfCString("%s %p ", mozilla::layout::ChildListName(lists.CurrentID()),
|
|
&GetChildList(lists.CurrentID()));
|
|
}
|
|
fprintf_stderr(out, "%s<\n", str.get());
|
|
str = "";
|
|
nsFrameList::Enumerator childFrames(lists.CurrentList());
|
|
for (; !childFrames.AtEnd(); childFrames.Next()) {
|
|
nsIFrame* kid = childFrames.get();
|
|
// Verify the child frame's parent frame pointer is correct
|
|
NS_ASSERTION(kid->GetParent() == this, "bad parent frame pointer");
|
|
|
|
// Have the child frame list
|
|
nsCString pfx(aPrefix);
|
|
pfx += " ";
|
|
kid->List(out, pfx.get(), aFlags);
|
|
}
|
|
fprintf_stderr(out, "%s>\n", aPrefix);
|
|
outputOneList = true;
|
|
}
|
|
|
|
if (!outputOneList) {
|
|
fprintf_stderr(out, "%s<>\n", str.get());
|
|
}
|
|
}
|
|
#endif
|