mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
a11a1c2c36
It would be incorrect to occlude async scrolled content. Instead of doing a lot of extra frame tree walking just use the flags on display items to tell if they are in fixed position subtrees. Also, don't let the fixed position flag on display items get set if we start building display items inside a subdocument. If didn't do this non-fixed content in a subdocument that is in fixed content in the parent document would be marked as in fixed position, and no occlusion would occur at all. This means that the fix applies to slightly less cases which are less important so that a more important case works the same as before.
1186 lines
38 KiB
C++
1186 lines
38 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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/*
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* rendering object for replaced elements that contain a document, such
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* as <frame>, <iframe>, and some <object>s
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*/
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#include "nsSubDocumentFrame.h"
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#include "mozilla/layout/RenderFrameParent.h"
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#include "nsCOMPtr.h"
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#include "nsGenericHTMLElement.h"
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#include "nsGenericHTMLFrameElement.h"
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#include "nsAttrValueInlines.h"
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#include "nsIDocShell.h"
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#include "nsIContentViewer.h"
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#include "nsPresContext.h"
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#include "nsIPresShell.h"
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#include "nsIDocument.h"
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#include "nsView.h"
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#include "nsViewManager.h"
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#include "nsGkAtoms.h"
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#include "nsStyleConsts.h"
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#include "nsFrameSetFrame.h"
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#include "nsIDOMHTMLFrameElement.h"
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#include "nsIScrollable.h"
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#include "nsNameSpaceManager.h"
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#include "nsDisplayList.h"
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#include "nsIScrollableFrame.h"
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#include "nsIObjectLoadingContent.h"
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#include "nsLayoutUtils.h"
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#include "FrameLayerBuilder.h"
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#include "nsObjectFrame.h"
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#include "nsContentUtils.h"
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#include "nsIPermissionManager.h"
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#include "nsServiceManagerUtils.h"
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using namespace mozilla;
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using mozilla::layout::RenderFrameParent;
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static nsIDocument*
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GetDocumentFromView(nsView* aView)
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{
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NS_PRECONDITION(aView, "");
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nsIFrame* f = aView->GetFrame();
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nsIPresShell* ps = f ? f->PresContext()->PresShell() : nullptr;
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return ps ? ps->GetDocument() : nullptr;
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}
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nsSubDocumentFrame::nsSubDocumentFrame(nsStyleContext* aContext)
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: nsLeafFrame(aContext)
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, mIsInline(false)
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, mPostedReflowCallback(false)
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, mDidCreateDoc(false)
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, mCallingShow(false)
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{
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}
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#ifdef ACCESSIBILITY
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a11y::AccType
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nsSubDocumentFrame::AccessibleType()
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{
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return a11y::eOuterDocType;
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}
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#endif
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NS_QUERYFRAME_HEAD(nsSubDocumentFrame)
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NS_QUERYFRAME_ENTRY(nsSubDocumentFrame)
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NS_QUERYFRAME_TAIL_INHERITING(nsLeafFrame)
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class AsyncFrameInit : public nsRunnable
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{
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public:
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AsyncFrameInit(nsIFrame* aFrame) : mFrame(aFrame) {}
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NS_IMETHOD Run()
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{
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if (mFrame.IsAlive()) {
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static_cast<nsSubDocumentFrame*>(mFrame.GetFrame())->ShowViewer();
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}
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return NS_OK;
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}
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private:
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nsWeakFrame mFrame;
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};
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static void
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InsertViewsInReverseOrder(nsView* aSibling, nsView* aParent);
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static void
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EndSwapDocShellsForViews(nsView* aView);
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void
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nsSubDocumentFrame::Init(nsIContent* aContent,
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nsIFrame* aParent,
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nsIFrame* aPrevInFlow)
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{
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// determine if we are a <frame> or <iframe>
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if (aContent) {
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nsCOMPtr<nsIDOMHTMLFrameElement> frameElem = do_QueryInterface(aContent);
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mIsInline = frameElem ? false : true;
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}
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nsLeafFrame::Init(aContent, aParent, aPrevInFlow);
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// We are going to create an inner view. If we need a view for the
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// OuterFrame but we wait for the normal view creation path in
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// nsCSSFrameConstructor, then we will lose because the inner view's
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// parent will already have been set to some outer view (e.g., the
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// canvas) when it really needs to have this frame's view as its
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// parent. So, create this frame's view right away, whether we
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// really need it or not, and the inner view will get it as the
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// parent.
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if (!HasView()) {
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nsContainerFrame::CreateViewForFrame(this, true);
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}
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EnsureInnerView();
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// Set the primary frame now so that nsDocumentViewer::FindContainerView
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// called from within EndSwapDocShellsForViews below can find it if needed.
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aContent->SetPrimaryFrame(this);
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// If we have a detached subdoc's root view on our frame loader, re-insert
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// it into the view tree. This happens when we've been reframed, and
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// ensures the presentation persists across reframes. If the frame element
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// has changed documents however, we blow away the presentation.
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nsRefPtr<nsFrameLoader> frameloader = FrameLoader();
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if (frameloader) {
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nsCOMPtr<nsIDocument> oldContainerDoc;
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nsView* detachedViews =
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frameloader->GetDetachedSubdocView(getter_AddRefs(oldContainerDoc));
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if (detachedViews) {
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if (oldContainerDoc == aContent->OwnerDoc()) {
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// Restore stashed presentation.
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::InsertViewsInReverseOrder(detachedViews, mInnerView);
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::EndSwapDocShellsForViews(mInnerView->GetFirstChild());
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} else {
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// Presentation is for a different document, don't restore it.
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frameloader->Hide();
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}
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}
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frameloader->SetDetachedSubdocView(nullptr, nullptr);
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}
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nsContentUtils::AddScriptRunner(new AsyncFrameInit(this));
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}
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void
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nsSubDocumentFrame::ShowViewer()
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{
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if (mCallingShow) {
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return;
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}
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if (!PresContext()->IsDynamic()) {
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// We let the printing code take care of loading the document; just
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// create the inner view for it to use.
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(void) EnsureInnerView();
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} else {
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nsRefPtr<nsFrameLoader> frameloader = FrameLoader();
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if (frameloader) {
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nsIntSize margin = GetMarginAttributes();
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nsWeakFrame weakThis(this);
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mCallingShow = true;
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const nsAttrValue* attrValue =
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GetContent()->AsElement()->GetParsedAttr(nsGkAtoms::scrolling);
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int32_t scrolling =
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nsGenericHTMLFrameElement::MapScrollingAttribute(attrValue);
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bool didCreateDoc =
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frameloader->Show(margin.width, margin.height,
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scrolling, scrolling, this);
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if (!weakThis.IsAlive()) {
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return;
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}
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mCallingShow = false;
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mDidCreateDoc = didCreateDoc;
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}
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}
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}
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nsIFrame*
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nsSubDocumentFrame::GetSubdocumentRootFrame()
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{
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if (!mInnerView)
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return nullptr;
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nsView* subdocView = mInnerView->GetFirstChild();
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return subdocView ? subdocView->GetFrame() : nullptr;
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}
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nsIntSize
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nsSubDocumentFrame::GetSubdocumentSize()
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{
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if (GetStateBits() & NS_FRAME_FIRST_REFLOW) {
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nsRefPtr<nsFrameLoader> frameloader = FrameLoader();
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if (frameloader) {
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nsCOMPtr<nsIDocument> oldContainerDoc;
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nsView* detachedViews =
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frameloader->GetDetachedSubdocView(getter_AddRefs(oldContainerDoc));
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if (detachedViews) {
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nsSize size = detachedViews->GetBounds().Size();
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nsPresContext* presContext = detachedViews->GetFrame()->PresContext();
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return nsIntSize(presContext->AppUnitsToDevPixels(size.width),
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presContext->AppUnitsToDevPixels(size.height));
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}
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}
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// Pick some default size for now. Using 10x10 because that's what the
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// code used to do.
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return nsIntSize(10, 10);
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} else {
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nsSize docSizeAppUnits;
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nsPresContext* presContext = PresContext();
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nsCOMPtr<nsIDOMHTMLFrameElement> frameElem =
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do_QueryInterface(GetContent());
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if (frameElem) {
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docSizeAppUnits = GetSize();
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} else {
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docSizeAppUnits = GetContentRect().Size();
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}
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return nsIntSize(presContext->AppUnitsToDevPixels(docSizeAppUnits.width),
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presContext->AppUnitsToDevPixels(docSizeAppUnits.height));
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}
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}
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bool
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nsSubDocumentFrame::PassPointerEventsToChildren()
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{
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// Limit use of mozpasspointerevents to documents with embedded:apps/chrome
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// permission, because this could be used by the parent document to discover
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// which parts of the subdocument are transparent to events (if subdocument
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// uses pointer-events:none on its root element, which is admittedly
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// unlikely)
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if (mContent->HasAttr(kNameSpaceID_None, nsGkAtoms::mozpasspointerevents)) {
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if (PresContext()->IsChrome()) {
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return true;
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}
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nsCOMPtr<nsIPermissionManager> permMgr =
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do_GetService(NS_PERMISSIONMANAGER_CONTRACTID);
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if (permMgr) {
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uint32_t permission = nsIPermissionManager::DENY_ACTION;
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permMgr->TestPermissionFromPrincipal(GetContent()->NodePrincipal(),
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"embed-apps", &permission);
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return permission == nsIPermissionManager::ALLOW_ACTION;
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}
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}
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return false;
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}
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static void
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WrapBackgroundColorInOwnLayer(nsDisplayListBuilder* aBuilder,
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nsIFrame* aFrame,
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nsDisplayList* aList)
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{
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nsDisplayList tempItems;
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nsDisplayItem* item;
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while ((item = aList->RemoveBottom()) != nullptr) {
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if (item->GetType() == nsDisplayItem::TYPE_BACKGROUND_COLOR) {
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nsDisplayList tmpList;
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tmpList.AppendToTop(item);
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item = new (aBuilder) nsDisplayOwnLayer(aBuilder, aFrame, &tmpList);
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}
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tempItems.AppendToTop(item);
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}
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aList->AppendToTop(&tempItems);
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}
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void
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nsSubDocumentFrame::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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if (!IsVisibleForPainting(aBuilder))
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return;
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nsFrameLoader* frameLoader = FrameLoader();
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RenderFrameParent* rfp = nullptr;
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if (frameLoader) {
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rfp = frameLoader->GetCurrentRemoteFrame();
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}
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// If we are pointer-events:none then we don't need to HitTest background
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bool pointerEventsNone = StyleVisibility()->mPointerEvents == NS_STYLE_POINTER_EVENTS_NONE;
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if (!aBuilder->IsForEventDelivery() || !pointerEventsNone) {
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nsDisplayListCollection decorations;
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DisplayBorderBackgroundOutline(aBuilder, decorations);
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if (rfp) {
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// Wrap background colors of <iframe>s with remote subdocuments in their
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// own layer so we generate a ColorLayer. This is helpful for optimizing
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// compositing; we can skip compositing the ColorLayer when the
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// remote content is opaque.
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WrapBackgroundColorInOwnLayer(aBuilder, this, decorations.BorderBackground());
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}
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decorations.MoveTo(aLists);
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}
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bool passPointerEventsToChildren = false;
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if (aBuilder->IsForEventDelivery()) {
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passPointerEventsToChildren = PassPointerEventsToChildren();
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// If mozpasspointerevents is set, then we should allow subdocument content
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// to handle events even if we're pointer-events:none.
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if (pointerEventsNone && !passPointerEventsToChildren) {
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return;
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}
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}
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// If we're passing pointer events to children then we have to descend into
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// subdocuments no matter what, to determine which parts are transparent for
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// elementFromPoint.
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if (!mInnerView ||
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(!aBuilder->GetDescendIntoSubdocuments() && !passPointerEventsToChildren)) {
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return;
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}
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if (rfp) {
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rfp->BuildDisplayList(aBuilder, this, aDirtyRect, aLists);
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return;
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}
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nsView* subdocView = mInnerView->GetFirstChild();
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if (!subdocView)
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return;
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nsCOMPtr<nsIPresShell> presShell = nullptr;
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nsIFrame* subdocRootFrame = subdocView->GetFrame();
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if (subdocRootFrame) {
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presShell = subdocRootFrame->PresContext()->PresShell();
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}
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// If painting is suppressed in the presshell, we try to look for a better
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// presshell to use.
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if (!presShell || (presShell->IsPaintingSuppressed() &&
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!aBuilder->IsIgnoringPaintSuppression())) {
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// During page transition mInnerView will sometimes have two children, the
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// first being the new page that may not have any frame, and the second
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// being the old page that will probably have a frame.
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nsView* nextView = subdocView->GetNextSibling();
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nsIFrame* frame = nullptr;
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if (nextView) {
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frame = nextView->GetFrame();
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}
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if (frame) {
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nsIPresShell* ps = frame->PresContext()->PresShell();
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if (!presShell || (ps && !ps->IsPaintingSuppressed())) {
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subdocView = nextView;
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subdocRootFrame = frame;
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presShell = ps;
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}
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}
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if (!presShell) {
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// If we don't have a frame we use this roundabout way to get the pres shell.
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if (!mFrameLoader)
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return;
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nsCOMPtr<nsIDocShell> docShell;
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mFrameLoader->GetDocShell(getter_AddRefs(docShell));
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if (!docShell)
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return;
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presShell = docShell->GetPresShell();
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if (!presShell)
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return;
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}
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}
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nsPresContext* presContext = presShell->GetPresContext();
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int32_t parentAPD = PresContext()->AppUnitsPerDevPixel();
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int32_t subdocAPD = presContext->AppUnitsPerDevPixel();
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nsRect dirty;
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bool haveDisplayPort = false;
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bool ignoreViewportScrolling = false;
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nsIFrame* savedIgnoreScrollFrame = nullptr;
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if (subdocRootFrame) {
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nsRect displayPort;
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if (nsLayoutUtils::ViewportHasDisplayPort(presContext, &displayPort)) {
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haveDisplayPort = true;
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dirty = displayPort;
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} else {
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// get the dirty rect relative to the root frame of the subdoc
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dirty = aDirtyRect + GetOffsetToCrossDoc(subdocRootFrame);
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// and convert into the appunits of the subdoc
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dirty = dirty.ConvertAppUnitsRoundOut(parentAPD, subdocAPD);
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}
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nsIFrame* rootScrollFrame = presShell->GetRootScrollFrame();
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ignoreViewportScrolling =
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rootScrollFrame && presShell->IgnoringViewportScrolling();
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if (ignoreViewportScrolling) {
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savedIgnoreScrollFrame = aBuilder->GetIgnoreScrollFrame();
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aBuilder->SetIgnoreScrollFrame(rootScrollFrame);
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}
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aBuilder->EnterPresShell(subdocRootFrame, dirty);
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}
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DisplayListClipState::AutoSaveRestore clipState(aBuilder);
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if (ShouldClipSubdocument()) {
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clipState.ClipContainingBlockDescendantsToContentBox(aBuilder, this);
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}
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nsIScrollableFrame *sf = presShell->GetRootScrollFrameAsScrollable();
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bool constructResolutionItem = subdocRootFrame &&
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(presShell->GetXResolution() != 1.0 || presShell->GetYResolution() != 1.0);
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bool constructZoomItem = subdocRootFrame && parentAPD != subdocAPD;
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bool needsOwnLayer = constructResolutionItem || constructZoomItem ||
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haveDisplayPort ||
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presContext->IsRootContentDocument() || (sf && sf->IsScrollingActive());
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// Don't let in fixed pos propagate down to child documents. This makes
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// it a little less effective but doesn't regress an important case of a
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// child document being in a fixed pos element where we would do no occlusion
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// at all if we let it propagate down.
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nsDisplayListBuilder::AutoInFixedPosSetter
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buildingInFixedPos(aBuilder, false);
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nsDisplayList childItems;
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{
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DisplayListClipState::AutoSaveRestore nestedClipState(aBuilder);
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if (needsOwnLayer) {
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// Clear current clip. There's no point in propagating it down, since
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// the layer we will construct will be clipped by the current clip.
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// In fact for nsDisplayZoom propagating it down would be incorrect since
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// nsDisplayZoom changes the meaning of appunits.
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nestedClipState.Clear();
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}
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if (subdocRootFrame) {
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aBuilder->SetAncestorHasTouchEventHandler(false);
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subdocRootFrame->
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BuildDisplayListForStackingContext(aBuilder, dirty, &childItems);
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}
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if (!aBuilder->IsForEventDelivery()) {
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// If we are going to use a displayzoom below then any items we put under
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// it need to have underlying frames from the subdocument. So we need to
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// calculate the bounds based on which frame will be the underlying frame
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// for the canvas background color item.
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nsRect bounds = GetContentRectRelativeToSelf() +
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aBuilder->ToReferenceFrame(this);
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if (subdocRootFrame) {
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bounds = bounds.ConvertAppUnitsRoundOut(parentAPD, subdocAPD);
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}
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// If we are in print preview/page layout we want to paint the grey
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// background behind the page, not the canvas color. The canvas color gets
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// painted on the page itself.
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if (nsLayoutUtils::NeedsPrintPreviewBackground(presContext)) {
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presShell->AddPrintPreviewBackgroundItem(
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*aBuilder, childItems, subdocRootFrame ? subdocRootFrame : this,
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bounds);
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} else {
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// Add the canvas background color to the bottom of the list. This
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// happens after we've built the list so that AddCanvasBackgroundColorItem
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// can monkey with the contents if necessary.
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uint32_t flags = nsIPresShell::FORCE_DRAW;
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presShell->AddCanvasBackgroundColorItem(
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*aBuilder, childItems, subdocRootFrame ? subdocRootFrame : this,
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bounds, NS_RGBA(0,0,0,0), flags);
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}
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}
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}
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// Generate a resolution and/or zoom item if needed. If one or both of those is
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// created, we don't need to create a separate nsDisplaySubDocument.
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uint32_t flags = nsDisplayOwnLayer::GENERATE_SUBDOC_INVALIDATIONS;
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// If ignoreViewportScrolling is true then the top most layer we create here
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// is going to become the scrollable layer for the root scroll frame, so we
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// want to add nsDisplayOwnLayer::GENERATE_SCROLLABLE_LAYER to whatever layer
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// becomes the topmost. We do this below.
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if (constructZoomItem) {
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uint32_t zoomFlags = flags;
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if (ignoreViewportScrolling && !constructResolutionItem) {
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zoomFlags |= nsDisplayOwnLayer::GENERATE_SCROLLABLE_LAYER;
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}
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nsDisplayZoom* zoomItem =
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new (aBuilder) nsDisplayZoom(aBuilder, subdocRootFrame, &childItems,
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subdocAPD, parentAPD, zoomFlags);
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childItems.AppendToTop(zoomItem);
|
|
needsOwnLayer = false;
|
|
}
|
|
// Wrap the zoom item in the resolution item if we have both because we want the
|
|
// resolution scale applied on top of the app units per dev pixel conversion.
|
|
if (ignoreViewportScrolling) {
|
|
flags |= nsDisplayOwnLayer::GENERATE_SCROLLABLE_LAYER;
|
|
}
|
|
if (constructResolutionItem) {
|
|
nsDisplayResolution* resolutionItem =
|
|
new (aBuilder) nsDisplayResolution(aBuilder, subdocRootFrame, &childItems,
|
|
flags);
|
|
childItems.AppendToTop(resolutionItem);
|
|
needsOwnLayer = false;
|
|
}
|
|
if (needsOwnLayer) {
|
|
// We always want top level content documents to be in their own layer.
|
|
nsDisplaySubDocument* layerItem = new (aBuilder) nsDisplaySubDocument(
|
|
aBuilder, subdocRootFrame ? subdocRootFrame : this,
|
|
&childItems, flags);
|
|
childItems.AppendToTop(layerItem);
|
|
}
|
|
|
|
if (subdocRootFrame) {
|
|
aBuilder->LeavePresShell(subdocRootFrame, dirty);
|
|
|
|
if (ignoreViewportScrolling) {
|
|
aBuilder->SetIgnoreScrollFrame(savedIgnoreScrollFrame);
|
|
}
|
|
}
|
|
|
|
if (aBuilder->IsForImageVisibility()) {
|
|
// We don't add the childItems to the return list as we're dealing with them here.
|
|
presShell->RebuildImageVisibility(childItems);
|
|
childItems.DeleteAll();
|
|
} else {
|
|
aLists.Content()->AppendToTop(&childItems);
|
|
}
|
|
}
|
|
|
|
nscoord
|
|
nsSubDocumentFrame::GetIntrinsicWidth()
|
|
{
|
|
if (!IsInline()) {
|
|
return 0; // HTML <frame> has no useful intrinsic width
|
|
}
|
|
|
|
if (mContent->IsXUL()) {
|
|
return 0; // XUL <iframe> and <browser> have no useful intrinsic width
|
|
}
|
|
|
|
NS_ASSERTION(ObtainIntrinsicSizeFrame() == nullptr,
|
|
"Intrinsic width should come from the embedded document.");
|
|
|
|
// We must be an HTML <iframe>. Default to a width of 300, for IE
|
|
// compat (and per CSS2.1 draft).
|
|
return nsPresContext::CSSPixelsToAppUnits(300);
|
|
}
|
|
|
|
nscoord
|
|
nsSubDocumentFrame::GetIntrinsicHeight()
|
|
{
|
|
// <frame> processing does not use this routine, only <iframe>
|
|
NS_ASSERTION(IsInline(), "Shouldn't have been called");
|
|
|
|
if (mContent->IsXUL()) {
|
|
return 0;
|
|
}
|
|
|
|
NS_ASSERTION(ObtainIntrinsicSizeFrame() == nullptr,
|
|
"Intrinsic height should come from the embedded document.");
|
|
|
|
// Use 150px, for compatibility with IE, and per CSS2.1 draft.
|
|
return nsPresContext::CSSPixelsToAppUnits(150);
|
|
}
|
|
|
|
#ifdef DEBUG_FRAME_DUMP
|
|
void
|
|
nsSubDocumentFrame::List(FILE* out, const char* aPrefix, uint32_t aFlags) const
|
|
{
|
|
nsCString str;
|
|
ListGeneric(str, aPrefix, aFlags);
|
|
fprintf_stderr(out, "%s\n", str.get());
|
|
|
|
if (aFlags & TRAVERSE_SUBDOCUMENT_FRAMES) {
|
|
nsSubDocumentFrame* f = const_cast<nsSubDocumentFrame*>(this);
|
|
nsIFrame* subdocRootFrame = f->GetSubdocumentRootFrame();
|
|
if (subdocRootFrame) {
|
|
nsCString pfx(aPrefix);
|
|
pfx += " ";
|
|
subdocRootFrame->List(out, pfx.get(), aFlags);
|
|
}
|
|
}
|
|
}
|
|
|
|
nsresult nsSubDocumentFrame::GetFrameName(nsAString& aResult) const
|
|
{
|
|
return MakeFrameName(NS_LITERAL_STRING("FrameOuter"), aResult);
|
|
}
|
|
#endif
|
|
|
|
nsIAtom*
|
|
nsSubDocumentFrame::GetType() const
|
|
{
|
|
return nsGkAtoms::subDocumentFrame;
|
|
}
|
|
|
|
/* virtual */ nscoord
|
|
nsSubDocumentFrame::GetMinWidth(nsRenderingContext *aRenderingContext)
|
|
{
|
|
nscoord result;
|
|
DISPLAY_MIN_WIDTH(this, result);
|
|
|
|
nsIFrame* subDocRoot = ObtainIntrinsicSizeFrame();
|
|
if (subDocRoot) {
|
|
result = subDocRoot->GetMinWidth(aRenderingContext);
|
|
} else {
|
|
result = GetIntrinsicWidth();
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/* virtual */ nscoord
|
|
nsSubDocumentFrame::GetPrefWidth(nsRenderingContext *aRenderingContext)
|
|
{
|
|
nscoord result;
|
|
DISPLAY_PREF_WIDTH(this, result);
|
|
|
|
nsIFrame* subDocRoot = ObtainIntrinsicSizeFrame();
|
|
if (subDocRoot) {
|
|
result = subDocRoot->GetPrefWidth(aRenderingContext);
|
|
} else {
|
|
result = GetIntrinsicWidth();
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/* virtual */ IntrinsicSize
|
|
nsSubDocumentFrame::GetIntrinsicSize()
|
|
{
|
|
nsIFrame* subDocRoot = ObtainIntrinsicSizeFrame();
|
|
if (subDocRoot) {
|
|
return subDocRoot->GetIntrinsicSize();
|
|
}
|
|
return nsLeafFrame::GetIntrinsicSize();
|
|
}
|
|
|
|
/* virtual */ nsSize
|
|
nsSubDocumentFrame::GetIntrinsicRatio()
|
|
{
|
|
nsIFrame* subDocRoot = ObtainIntrinsicSizeFrame();
|
|
if (subDocRoot) {
|
|
return subDocRoot->GetIntrinsicRatio();
|
|
}
|
|
return nsLeafFrame::GetIntrinsicRatio();
|
|
}
|
|
|
|
/* virtual */ nsSize
|
|
nsSubDocumentFrame::ComputeAutoSize(nsRenderingContext *aRenderingContext,
|
|
nsSize aCBSize, nscoord aAvailableWidth,
|
|
nsSize aMargin, nsSize aBorder,
|
|
nsSize aPadding, bool aShrinkWrap)
|
|
{
|
|
if (!IsInline()) {
|
|
return nsFrame::ComputeAutoSize(aRenderingContext, aCBSize,
|
|
aAvailableWidth, aMargin, aBorder,
|
|
aPadding, aShrinkWrap);
|
|
}
|
|
|
|
return nsLeafFrame::ComputeAutoSize(aRenderingContext, aCBSize,
|
|
aAvailableWidth, aMargin, aBorder,
|
|
aPadding, aShrinkWrap);
|
|
}
|
|
|
|
|
|
/* virtual */ nsSize
|
|
nsSubDocumentFrame::ComputeSize(nsRenderingContext *aRenderingContext,
|
|
nsSize aCBSize, nscoord aAvailableWidth,
|
|
nsSize aMargin, nsSize aBorder, nsSize aPadding,
|
|
uint32_t aFlags)
|
|
{
|
|
nsIFrame* subDocRoot = ObtainIntrinsicSizeFrame();
|
|
if (subDocRoot) {
|
|
return nsLayoutUtils::ComputeSizeWithIntrinsicDimensions(
|
|
aRenderingContext, this,
|
|
subDocRoot->GetIntrinsicSize(),
|
|
subDocRoot->GetIntrinsicRatio(),
|
|
aCBSize, aMargin, aBorder, aPadding);
|
|
}
|
|
return nsLeafFrame::ComputeSize(aRenderingContext, aCBSize, aAvailableWidth,
|
|
aMargin, aBorder, aPadding, aFlags);
|
|
}
|
|
|
|
nsresult
|
|
nsSubDocumentFrame::Reflow(nsPresContext* aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsReflowStatus& aStatus)
|
|
{
|
|
DO_GLOBAL_REFLOW_COUNT("nsSubDocumentFrame");
|
|
DISPLAY_REFLOW(aPresContext, this, aReflowState, aDesiredSize, aStatus);
|
|
// printf("OuterFrame::Reflow %X (%d,%d) \n", this, aReflowState.AvailableWidth(), aReflowState.AvailableHeight());
|
|
NS_FRAME_TRACE(NS_FRAME_TRACE_CALLS,
|
|
("enter nsSubDocumentFrame::Reflow: maxSize=%d,%d",
|
|
aReflowState.AvailableWidth(), aReflowState.AvailableHeight()));
|
|
|
|
aStatus = NS_FRAME_COMPLETE;
|
|
|
|
NS_ASSERTION(mContent->GetPrimaryFrame() == this,
|
|
"Shouldn't happen");
|
|
|
|
// XUL <iframe> or <browser>, or HTML <iframe>, <object> or <embed>
|
|
nsresult rv = nsLeafFrame::DoReflow(aPresContext, aDesiredSize, aReflowState,
|
|
aStatus);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// "offset" is the offset of our content area from our frame's
|
|
// top-left corner.
|
|
nsPoint offset = nsPoint(aReflowState.ComputedPhysicalBorderPadding().left,
|
|
aReflowState.ComputedPhysicalBorderPadding().top);
|
|
|
|
nsSize innerSize(aDesiredSize.Width(), aDesiredSize.Height());
|
|
innerSize.width -= aReflowState.ComputedPhysicalBorderPadding().LeftRight();
|
|
innerSize.height -= aReflowState.ComputedPhysicalBorderPadding().TopBottom();
|
|
|
|
if (mInnerView) {
|
|
nsViewManager* vm = mInnerView->GetViewManager();
|
|
vm->MoveViewTo(mInnerView, offset.x, offset.y);
|
|
vm->ResizeView(mInnerView, nsRect(nsPoint(0, 0), innerSize), true);
|
|
}
|
|
|
|
aDesiredSize.SetOverflowAreasToDesiredBounds();
|
|
if (!ShouldClipSubdocument()) {
|
|
nsIFrame* subdocRootFrame = GetSubdocumentRootFrame();
|
|
if (subdocRootFrame) {
|
|
aDesiredSize.mOverflowAreas.UnionWith(subdocRootFrame->GetOverflowAreas() + offset);
|
|
}
|
|
}
|
|
|
|
FinishAndStoreOverflow(&aDesiredSize);
|
|
|
|
if (!aPresContext->IsPaginated() && !mPostedReflowCallback) {
|
|
PresContext()->PresShell()->PostReflowCallback(this);
|
|
mPostedReflowCallback = true;
|
|
}
|
|
|
|
// printf("OuterFrame::Reflow DONE %X (%d,%d)\n", this,
|
|
// aDesiredSize.Width(), aDesiredSize.Height());
|
|
|
|
NS_FRAME_TRACE(NS_FRAME_TRACE_CALLS,
|
|
("exit nsSubDocumentFrame::Reflow: size=%d,%d status=%x",
|
|
aDesiredSize.Width(), aDesiredSize.Height(), aStatus));
|
|
|
|
NS_FRAME_SET_TRUNCATION(aStatus, aReflowState, aDesiredSize);
|
|
return NS_OK;
|
|
}
|
|
|
|
bool
|
|
nsSubDocumentFrame::ReflowFinished()
|
|
{
|
|
if (mFrameLoader) {
|
|
nsWeakFrame weakFrame(this);
|
|
|
|
mFrameLoader->UpdatePositionAndSize(this);
|
|
|
|
if (weakFrame.IsAlive()) {
|
|
// Make sure that we can post a reflow callback in the future.
|
|
mPostedReflowCallback = false;
|
|
}
|
|
} else {
|
|
mPostedReflowCallback = false;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void
|
|
nsSubDocumentFrame::ReflowCallbackCanceled()
|
|
{
|
|
mPostedReflowCallback = false;
|
|
}
|
|
|
|
nsresult
|
|
nsSubDocumentFrame::AttributeChanged(int32_t aNameSpaceID,
|
|
nsIAtom* aAttribute,
|
|
int32_t aModType)
|
|
{
|
|
if (aNameSpaceID != kNameSpaceID_None) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// If the noResize attribute changes, dis/allow frame to be resized
|
|
if (aAttribute == nsGkAtoms::noresize) {
|
|
// Note that we're not doing content type checks, but that's ok -- if
|
|
// they'd fail we will just end up with a null framesetFrame.
|
|
if (mContent->GetParent()->Tag() == nsGkAtoms::frameset) {
|
|
nsIFrame* parentFrame = GetParent();
|
|
|
|
if (parentFrame) {
|
|
// There is no interface for nsHTMLFramesetFrame so QI'ing to
|
|
// concrete class, yay!
|
|
nsHTMLFramesetFrame* framesetFrame = do_QueryFrame(parentFrame);
|
|
if (framesetFrame) {
|
|
framesetFrame->RecalculateBorderResize();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else if (aAttribute == nsGkAtoms::showresizer) {
|
|
nsIFrame* rootFrame = GetSubdocumentRootFrame();
|
|
if (rootFrame) {
|
|
rootFrame->PresContext()->PresShell()->
|
|
FrameNeedsReflow(rootFrame, nsIPresShell::eResize, NS_FRAME_IS_DIRTY);
|
|
}
|
|
}
|
|
else if (aAttribute == nsGkAtoms::marginwidth ||
|
|
aAttribute == nsGkAtoms::marginheight) {
|
|
|
|
// Retrieve the attributes
|
|
nsIntSize margins = GetMarginAttributes();
|
|
|
|
// Notify the frameloader
|
|
nsRefPtr<nsFrameLoader> frameloader = FrameLoader();
|
|
if (frameloader)
|
|
frameloader->MarginsChanged(margins.width, margins.height);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsIFrame*
|
|
NS_NewSubDocumentFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
|
|
{
|
|
return new (aPresShell) nsSubDocumentFrame(aContext);
|
|
}
|
|
|
|
NS_IMPL_FRAMEARENA_HELPERS(nsSubDocumentFrame)
|
|
|
|
class nsHideViewer : public nsRunnable {
|
|
public:
|
|
nsHideViewer(nsIContent* aFrameElement,
|
|
nsFrameLoader* aFrameLoader,
|
|
nsIPresShell* aPresShell,
|
|
bool aHideViewerIfFrameless)
|
|
: mFrameElement(aFrameElement),
|
|
mFrameLoader(aFrameLoader),
|
|
mPresShell(aPresShell),
|
|
mHideViewerIfFrameless(aHideViewerIfFrameless)
|
|
{
|
|
NS_ASSERTION(mFrameElement, "Must have a frame element");
|
|
NS_ASSERTION(mFrameLoader, "Must have a frame loader");
|
|
NS_ASSERTION(mPresShell, "Must have a presshell");
|
|
}
|
|
|
|
NS_IMETHOD Run()
|
|
{
|
|
// Flush frames, to ensure any pending display:none changes are made.
|
|
// Note it can be unsafe to flush if we've destroyed the presentation
|
|
// for some other reason, like if we're shutting down.
|
|
if (!mPresShell->IsDestroying()) {
|
|
mPresShell->FlushPendingNotifications(Flush_Frames);
|
|
}
|
|
nsIFrame* frame = mFrameElement->GetPrimaryFrame();
|
|
if ((!frame && mHideViewerIfFrameless) ||
|
|
mPresShell->IsDestroying()) {
|
|
// Either the frame element has no nsIFrame or the presshell is being
|
|
// destroyed. Hide the nsFrameLoader, which destroys the presentation,
|
|
// and clear our references to the stashed presentation.
|
|
mFrameLoader->SetDetachedSubdocView(nullptr, nullptr);
|
|
mFrameLoader->Hide();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
private:
|
|
nsCOMPtr<nsIContent> mFrameElement;
|
|
nsRefPtr<nsFrameLoader> mFrameLoader;
|
|
nsCOMPtr<nsIPresShell> mPresShell;
|
|
bool mHideViewerIfFrameless;
|
|
};
|
|
|
|
static nsView*
|
|
BeginSwapDocShellsForViews(nsView* aSibling);
|
|
|
|
void
|
|
nsSubDocumentFrame::DestroyFrom(nsIFrame* aDestructRoot)
|
|
{
|
|
if (mPostedReflowCallback) {
|
|
PresContext()->PresShell()->CancelReflowCallback(this);
|
|
mPostedReflowCallback = false;
|
|
}
|
|
|
|
// Detach the subdocument's views and stash them in the frame loader.
|
|
// We can then reattach them if we're being reframed (for example if
|
|
// the frame has been made position:fixed).
|
|
nsFrameLoader* frameloader = FrameLoader();
|
|
if (frameloader) {
|
|
nsView* detachedViews = ::BeginSwapDocShellsForViews(mInnerView->GetFirstChild());
|
|
frameloader->SetDetachedSubdocView(detachedViews, mContent->OwnerDoc());
|
|
|
|
// We call nsFrameLoader::HideViewer() in a script runner so that we can
|
|
// safely determine whether the frame is being reframed or destroyed.
|
|
nsContentUtils::AddScriptRunner(
|
|
new nsHideViewer(mContent,
|
|
mFrameLoader,
|
|
PresContext()->PresShell(),
|
|
(mDidCreateDoc || mCallingShow)));
|
|
}
|
|
|
|
nsLeafFrame::DestroyFrom(aDestructRoot);
|
|
}
|
|
|
|
nsIntSize
|
|
nsSubDocumentFrame::GetMarginAttributes()
|
|
{
|
|
nsIntSize result(-1, -1);
|
|
nsGenericHTMLElement *content = nsGenericHTMLElement::FromContent(mContent);
|
|
if (content) {
|
|
const nsAttrValue* attr = content->GetParsedAttr(nsGkAtoms::marginwidth);
|
|
if (attr && attr->Type() == nsAttrValue::eInteger)
|
|
result.width = attr->GetIntegerValue();
|
|
attr = content->GetParsedAttr(nsGkAtoms::marginheight);
|
|
if (attr && attr->Type() == nsAttrValue::eInteger)
|
|
result.height = attr->GetIntegerValue();
|
|
}
|
|
return result;
|
|
}
|
|
|
|
nsFrameLoader*
|
|
nsSubDocumentFrame::FrameLoader()
|
|
{
|
|
nsIContent* content = GetContent();
|
|
if (!content)
|
|
return nullptr;
|
|
|
|
if (!mFrameLoader) {
|
|
nsCOMPtr<nsIFrameLoaderOwner> loaderOwner = do_QueryInterface(content);
|
|
if (loaderOwner) {
|
|
nsCOMPtr<nsIFrameLoader> loader;
|
|
loaderOwner->GetFrameLoader(getter_AddRefs(loader));
|
|
mFrameLoader = static_cast<nsFrameLoader*>(loader.get());
|
|
}
|
|
}
|
|
return mFrameLoader;
|
|
}
|
|
|
|
// XXX this should be called ObtainDocShell or something like that,
|
|
// to indicate that it could have side effects
|
|
nsresult
|
|
nsSubDocumentFrame::GetDocShell(nsIDocShell **aDocShell)
|
|
{
|
|
*aDocShell = nullptr;
|
|
|
|
NS_ENSURE_STATE(FrameLoader());
|
|
return mFrameLoader->GetDocShell(aDocShell);
|
|
}
|
|
|
|
static void
|
|
DestroyDisplayItemDataForFrames(nsIFrame* aFrame)
|
|
{
|
|
FrameLayerBuilder::DestroyDisplayItemDataFor(aFrame);
|
|
|
|
nsIFrame::ChildListIterator lists(aFrame);
|
|
for (; !lists.IsDone(); lists.Next()) {
|
|
nsFrameList::Enumerator childFrames(lists.CurrentList());
|
|
for (; !childFrames.AtEnd(); childFrames.Next()) {
|
|
DestroyDisplayItemDataForFrames(childFrames.get());
|
|
}
|
|
}
|
|
}
|
|
|
|
static bool
|
|
BeginSwapDocShellsForDocument(nsIDocument* aDocument, void*)
|
|
{
|
|
NS_PRECONDITION(aDocument, "");
|
|
|
|
nsIPresShell* shell = aDocument->GetShell();
|
|
if (shell) {
|
|
// Disable painting while the views are detached, see bug 946929.
|
|
shell->SetNeverPainting(true);
|
|
|
|
nsIFrame* rootFrame = shell->GetRootFrame();
|
|
if (rootFrame) {
|
|
::DestroyDisplayItemDataForFrames(rootFrame);
|
|
}
|
|
}
|
|
aDocument->EnumerateFreezableElements(
|
|
nsObjectFrame::BeginSwapDocShells, nullptr);
|
|
aDocument->EnumerateSubDocuments(BeginSwapDocShellsForDocument, nullptr);
|
|
return true;
|
|
}
|
|
|
|
static nsView*
|
|
BeginSwapDocShellsForViews(nsView* aSibling)
|
|
{
|
|
// Collect the removed sibling views in reverse order in 'removedViews'.
|
|
nsView* removedViews = nullptr;
|
|
while (aSibling) {
|
|
nsIDocument* doc = ::GetDocumentFromView(aSibling);
|
|
if (doc) {
|
|
::BeginSwapDocShellsForDocument(doc, nullptr);
|
|
}
|
|
nsView* next = aSibling->GetNextSibling();
|
|
aSibling->GetViewManager()->RemoveChild(aSibling);
|
|
aSibling->SetNextSibling(removedViews);
|
|
removedViews = aSibling;
|
|
aSibling = next;
|
|
}
|
|
return removedViews;
|
|
}
|
|
|
|
static void
|
|
InsertViewsInReverseOrder(nsView* aSibling, nsView* aParent)
|
|
{
|
|
NS_PRECONDITION(aParent, "");
|
|
NS_PRECONDITION(!aParent->GetFirstChild(), "inserting into non-empty list");
|
|
|
|
nsViewManager* vm = aParent->GetViewManager();
|
|
while (aSibling) {
|
|
nsView* next = aSibling->GetNextSibling();
|
|
aSibling->SetNextSibling(nullptr);
|
|
// true means 'after' in document order which is 'before' in view order,
|
|
// so this call prepends the child, thus reversing the siblings as we go.
|
|
vm->InsertChild(aParent, aSibling, nullptr, true);
|
|
aSibling = next;
|
|
}
|
|
}
|
|
|
|
nsresult
|
|
nsSubDocumentFrame::BeginSwapDocShells(nsIFrame* aOther)
|
|
{
|
|
if (!aOther || aOther->GetType() != nsGkAtoms::subDocumentFrame) {
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
nsSubDocumentFrame* other = static_cast<nsSubDocumentFrame*>(aOther);
|
|
if (!mFrameLoader || !mDidCreateDoc || mCallingShow ||
|
|
!other->mFrameLoader || !other->mDidCreateDoc) {
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
if (mInnerView && other->mInnerView) {
|
|
nsView* ourSubdocViews = mInnerView->GetFirstChild();
|
|
nsView* ourRemovedViews = ::BeginSwapDocShellsForViews(ourSubdocViews);
|
|
nsView* otherSubdocViews = other->mInnerView->GetFirstChild();
|
|
nsView* otherRemovedViews = ::BeginSwapDocShellsForViews(otherSubdocViews);
|
|
|
|
::InsertViewsInReverseOrder(ourRemovedViews, other->mInnerView);
|
|
::InsertViewsInReverseOrder(otherRemovedViews, mInnerView);
|
|
}
|
|
mFrameLoader.swap(other->mFrameLoader);
|
|
return NS_OK;
|
|
}
|
|
|
|
static bool
|
|
EndSwapDocShellsForDocument(nsIDocument* aDocument, void*)
|
|
{
|
|
NS_PRECONDITION(aDocument, "");
|
|
|
|
// Our docshell and view trees have been updated for the new hierarchy.
|
|
// Now also update all nsDeviceContext::mWidget to that of the
|
|
// container view in the new hierarchy.
|
|
nsCOMPtr<nsIDocShell> ds = aDocument->GetDocShell();
|
|
if (ds) {
|
|
nsCOMPtr<nsIContentViewer> cv;
|
|
ds->GetContentViewer(getter_AddRefs(cv));
|
|
while (cv) {
|
|
nsRefPtr<nsPresContext> pc;
|
|
cv->GetPresContext(getter_AddRefs(pc));
|
|
if (pc && pc->GetPresShell()) {
|
|
pc->GetPresShell()->SetNeverPainting(ds->IsInvisible());
|
|
}
|
|
nsDeviceContext* dc = pc ? pc->DeviceContext() : nullptr;
|
|
if (dc) {
|
|
nsView* v = cv->FindContainerView();
|
|
dc->Init(v ? v->GetNearestWidget(nullptr) : nullptr);
|
|
}
|
|
nsCOMPtr<nsIContentViewer> prev;
|
|
cv->GetPreviousViewer(getter_AddRefs(prev));
|
|
cv = prev;
|
|
}
|
|
}
|
|
|
|
aDocument->EnumerateFreezableElements(
|
|
nsObjectFrame::EndSwapDocShells, nullptr);
|
|
aDocument->EnumerateSubDocuments(EndSwapDocShellsForDocument, nullptr);
|
|
return true;
|
|
}
|
|
|
|
static void
|
|
EndSwapDocShellsForViews(nsView* aSibling)
|
|
{
|
|
for ( ; aSibling; aSibling = aSibling->GetNextSibling()) {
|
|
nsIDocument* doc = ::GetDocumentFromView(aSibling);
|
|
if (doc) {
|
|
::EndSwapDocShellsForDocument(doc, nullptr);
|
|
}
|
|
nsIFrame *frame = aSibling->GetFrame();
|
|
if (frame) {
|
|
nsIFrame* parent = nsLayoutUtils::GetCrossDocParentFrame(frame);
|
|
if (parent->HasAnyStateBits(NS_FRAME_IN_POPUP)) {
|
|
nsIFrame::AddInPopupStateBitToDescendants(frame);
|
|
} else {
|
|
nsIFrame::RemoveInPopupStateBitFromDescendants(frame);
|
|
}
|
|
if (frame->HasInvalidFrameInSubtree()) {
|
|
while (parent && !parent->HasAnyStateBits(NS_FRAME_DESCENDANT_NEEDS_PAINT)) {
|
|
parent->AddStateBits(NS_FRAME_DESCENDANT_NEEDS_PAINT);
|
|
parent = nsLayoutUtils::GetCrossDocParentFrame(parent);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
nsSubDocumentFrame::EndSwapDocShells(nsIFrame* aOther)
|
|
{
|
|
nsSubDocumentFrame* other = static_cast<nsSubDocumentFrame*>(aOther);
|
|
nsWeakFrame weakThis(this);
|
|
nsWeakFrame weakOther(aOther);
|
|
|
|
if (mInnerView) {
|
|
::EndSwapDocShellsForViews(mInnerView->GetFirstChild());
|
|
}
|
|
if (other->mInnerView) {
|
|
::EndSwapDocShellsForViews(other->mInnerView->GetFirstChild());
|
|
}
|
|
|
|
// Now make sure we reflow both frames, in case their contents
|
|
// determine their size.
|
|
// And repaint them, for good measure, in case there's nothing
|
|
// interesting that happens during reflow.
|
|
if (weakThis.IsAlive()) {
|
|
PresContext()->PresShell()->
|
|
FrameNeedsReflow(this, nsIPresShell::eTreeChange, NS_FRAME_IS_DIRTY);
|
|
InvalidateFrameSubtree();
|
|
}
|
|
if (weakOther.IsAlive()) {
|
|
other->PresContext()->PresShell()->
|
|
FrameNeedsReflow(other, nsIPresShell::eTreeChange, NS_FRAME_IS_DIRTY);
|
|
other->InvalidateFrameSubtree();
|
|
}
|
|
}
|
|
|
|
nsView*
|
|
nsSubDocumentFrame::EnsureInnerView()
|
|
{
|
|
if (mInnerView) {
|
|
return mInnerView;
|
|
}
|
|
|
|
// create, init, set the parent of the view
|
|
nsView* outerView = GetView();
|
|
NS_ASSERTION(outerView, "Must have an outer view already");
|
|
nsRect viewBounds(0, 0, 0, 0); // size will be fixed during reflow
|
|
|
|
nsViewManager* viewMan = outerView->GetViewManager();
|
|
nsView* innerView = viewMan->CreateView(viewBounds, outerView);
|
|
if (!innerView) {
|
|
NS_ERROR("Could not create inner view");
|
|
return nullptr;
|
|
}
|
|
mInnerView = innerView;
|
|
viewMan->InsertChild(outerView, innerView, nullptr, true);
|
|
|
|
return mInnerView;
|
|
}
|
|
|
|
nsIFrame*
|
|
nsSubDocumentFrame::ObtainIntrinsicSizeFrame()
|
|
{
|
|
nsCOMPtr<nsIObjectLoadingContent> olc = do_QueryInterface(GetContent());
|
|
if (olc) {
|
|
// We are an HTML <object>, <embed> or <applet> (a replaced element).
|
|
|
|
// Try to get an nsIFrame for our sub-document's document element
|
|
nsIFrame* subDocRoot = nullptr;
|
|
|
|
nsCOMPtr<nsIDocShell> docShell;
|
|
GetDocShell(getter_AddRefs(docShell));
|
|
if (docShell) {
|
|
nsCOMPtr<nsIPresShell> presShell = docShell->GetPresShell();
|
|
if (presShell) {
|
|
nsIScrollableFrame* scrollable = presShell->GetRootScrollFrameAsScrollable();
|
|
if (scrollable) {
|
|
nsIFrame* scrolled = scrollable->GetScrolledFrame();
|
|
if (scrolled) {
|
|
subDocRoot = scrolled->GetFirstPrincipalChild();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (subDocRoot && subDocRoot->GetContent() &&
|
|
subDocRoot->GetContent()->NodeInfo()->Equals(nsGkAtoms::svg, kNameSpaceID_SVG)) {
|
|
return subDocRoot; // SVG documents have an intrinsic size
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|