More work-in-progress for fixed positioning
git-svn-id: svn://10.0.0.236/trunk@18924 18797224-902f-48f8-a5cc-f745e15eee43
This commit is contained in:
troy%netscape.com
parent
05ab551aaa
commit
b34a14698c
@ -41,8 +41,10 @@
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#include "nsHTMLIIDs.h"
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#include "nsDOMEvent.h"
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#include "nsIScrollableView.h"
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#include "nsWidgetsCID.h"
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static NS_DEFINE_IID(kScrollViewIID, NS_ISCROLLABLEVIEW_IID);
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static NS_DEFINE_IID(kCChildCID, NS_CHILD_CID);
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NS_IMETHODIMP
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nsHTMLContainerFrame::Paint(nsIPresContext& aPresContext,
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@ -213,7 +215,7 @@ nsHTMLContainerFrame::CreateViewForFrame(nsIPresContext& aPresContext,
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aFrame));
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aForce = PR_TRUE;
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} else if (NS_STYLE_POSITION_ABSOLUTE == position->mPosition) {
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} else if (position->IsAbsolutelyPositioned()) {
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NS_FRAME_LOG(NS_FRAME_TRACE_CALLS,
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("nsHTMLContainerFrame::CreateViewForFrame: frame=%p relatively positioned",
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aFrame));
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@ -326,6 +328,12 @@ nsHTMLContainerFrame::CreateViewForFrame(nsIPresContext& aPresContext,
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viewManager->SetViewContentTransparency(view, PR_TRUE);
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}
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// XXX If it's fixed positioned, then create a widget so it floats
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// above the scrolling area
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if (NS_STYLE_POSITION_FIXED == position->mPosition) {
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view->CreateWidget(kCChildCID);
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}
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viewManager->SetViewOpacity(view, color->mOpacity);
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NS_RELEASE(viewManager);
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}
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@ -110,7 +110,7 @@ nsHTMLReflowState::DetermineFrameType(nsIPresContext& aPresContext)
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frame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct*&)display);
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const nsStylePosition* pos;
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frame->GetStyleData(eStyleStruct_Position, (const nsStyleStruct*&)pos);
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if ((nsnull != pos) && (NS_STYLE_POSITION_ABSOLUTE == pos->mPosition)) {
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if (pos->IsAbsolutelyPositioned()) {
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frameType = NS_CSS_FRAME_TYPE_ABSOLUTE;
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}
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else if (NS_STYLE_FLOAT_NONE != display->mFloats) {
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@ -15,9 +15,11 @@
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#include "nsHTMLParts.h"
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#include "nsContainerFrame.h"
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#include "nsHTMLParts.h"
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#include "nsHTMLIIDs.h"
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#include "nsLayoutAtoms.h"
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#include "nsIViewManager.h"
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static NS_DEFINE_IID(kIFrameIID, NS_IFRAME_IID);
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@ -35,12 +37,39 @@ static NS_DEFINE_IID(kIFrameIID, NS_IFRAME_IID);
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*/
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class ViewportFrame : public nsContainerFrame {
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public:
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NS_IMETHOD DeleteFrame(nsIPresContext& aPresContext);
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NS_IMETHOD SetInitialChildList(nsIPresContext& aPresContext,
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nsIAtom* aListName,
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nsIFrame* aChildList);
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NS_IMETHOD GetAdditionalChildListName(PRInt32 aIndex,
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nsIAtom*& aListName) const;
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NS_IMETHOD FirstChild(nsIAtom* aListName, nsIFrame*& aFirstChild) const;
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NS_IMETHOD Reflow(nsIPresContext& aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus);
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NS_IMETHOD GetFrameName(nsString& aResult) const;
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protected:
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nsresult IncrementalReflow(nsIPresContext& aPresContext,
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const nsHTMLReflowState& aReflowState);
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nsresult ReflowFixedFrame(nsIPresContext& aPresContext,
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const nsHTMLReflowState& aReflowState,
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nsIFrame* aKidFrame,
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PRBool aInitialReflow,
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nsReflowStatus& aStatus) const;
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void ReflowFixedFrames(nsIPresContext& aPresContext,
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const nsHTMLReflowState& aReflowState) const;
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private:
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nsFrameList mFixedFrames; // additional named child list
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};
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//----------------------------------------------------------------------
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@ -56,6 +85,179 @@ NS_NewViewportFrame(nsIFrame*& aResult)
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return NS_OK;
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}
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NS_IMETHODIMP
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ViewportFrame::DeleteFrame(nsIPresContext& aPresContext)
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{
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mFixedFrames.DeleteFrames(aPresContext);
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return nsContainerFrame::DeleteFrame(aPresContext);
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}
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NS_IMETHODIMP
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ViewportFrame::SetInitialChildList(nsIPresContext& aPresContext,
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nsIAtom* aListName,
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nsIFrame* aChildList)
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{
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nsresult rv;
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if (nsLayoutAtoms::fixedList == aListName) {
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mFixedFrames.SetFrames(aChildList);
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rv = NS_OK;
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} else {
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rv = nsContainerFrame::SetInitialChildList(aPresContext, aListName, aChildList);
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}
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return rv;
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}
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NS_IMETHODIMP
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ViewportFrame::GetAdditionalChildListName(PRInt32 aIndex,
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nsIAtom*& aListName) const
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{
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nsIAtom* atom = nsnull;
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if (aIndex < 0) {
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return NS_ERROR_INVALID_ARG;
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} else if (0 == aIndex) {
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atom = nsLayoutAtoms::fixedList;
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NS_ADDREF(atom);
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}
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aListName = atom;
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return NS_OK;
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}
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NS_IMETHODIMP
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ViewportFrame::FirstChild(nsIAtom* aListName, nsIFrame*& aFirstChild) const
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{
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if (aListName == nsLayoutAtoms::fixedList) {
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aFirstChild = mFixedFrames.FirstChild();
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return NS_OK;
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}
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return nsContainerFrame::FirstChild(aListName, aFirstChild);
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}
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nsresult
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ViewportFrame::ReflowFixedFrame(nsIPresContext& aPresContext,
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const nsHTMLReflowState& aReflowState,
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nsIFrame* aKidFrame,
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PRBool aInitialReflow,
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nsReflowStatus& aStatus) const
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{
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// Reflow the frame
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nsIHTMLReflow* htmlReflow;
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nsresult rv;
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rv = aKidFrame->QueryInterface(kIHTMLReflowIID, (void**)&htmlReflow);
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if (NS_SUCCEEDED(rv)) {
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htmlReflow->WillReflow(aPresContext);
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nsHTMLReflowMetrics kidDesiredSize(nsnull);
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nsSize availSize(aReflowState.availableWidth, NS_UNCONSTRAINEDSIZE);
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nsHTMLReflowState kidReflowState(aPresContext, aKidFrame, aReflowState, availSize);
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// If it's the initial reflow, then override the reflow reason. This is
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// used when frames are inserted incrementally
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if (aInitialReflow) {
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kidReflowState.reason = eReflowReason_Initial;
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}
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// XXX Temporary hack until the block/inline code starts using 'computedWidth'
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kidReflowState.availableWidth = kidReflowState.computedWidth;
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htmlReflow->Reflow(aPresContext, kidDesiredSize, kidReflowState, aStatus);
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// Position the child
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nsRect rect(kidReflowState.computedOffsets.left,
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kidReflowState.computedOffsets.top,
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kidDesiredSize.width, kidDesiredSize.height);
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aKidFrame->SetRect(rect);
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htmlReflow->DidReflow(aPresContext, NS_FRAME_REFLOW_FINISHED);
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}
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return rv;
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}
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// Called by Reflow() to reflow all of the fixed positioned child frames.
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// This is only done for 'initial', 'resize', and 'style change' reflow commands
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void
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ViewportFrame::ReflowFixedFrames(nsIPresContext& aPresContext,
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const nsHTMLReflowState& aReflowState) const
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{
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NS_PRECONDITION(eReflowReason_Incremental != aReflowState.reason,
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"unexpected reflow reason");
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nsIFrame* kidFrame;
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for (kidFrame = mFixedFrames.FirstChild(); nsnull != kidFrame; kidFrame->GetNextSibling(kidFrame)) {
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// Reflow the frame using our reflow reason
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nsReflowStatus kidStatus;
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ReflowFixedFrame(aPresContext, aReflowState, kidFrame, PR_FALSE,
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kidStatus);
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}
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}
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/**
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* Called by Reflow() to handle the case where it's an incremental reflow
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* of a fixed child frame
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*/
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nsresult
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ViewportFrame::IncrementalReflow(nsIPresContext& aPresContext,
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const nsHTMLReflowState& aReflowState)
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{
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nsIReflowCommand::ReflowType type;
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nsIFrame* newFrames;
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PRInt32 numFrames;
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// Get the type of reflow command
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aReflowState.reflowCommand->GetType(type);
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// Handle each specific type
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if (nsIReflowCommand::FrameAppended == type) {
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// Add the frames to our list of fixed position frames
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aReflowState.reflowCommand->GetChildFrame(newFrames);
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NS_ASSERTION(nsnull != newFrames, "null child list");
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numFrames = LengthOf(newFrames);
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mFixedFrames.AppendFrames(nsnull, newFrames);
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} else if (nsIReflowCommand::FrameRemoved == type) {
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// Get the new frame
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nsIFrame* childFrame;
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aReflowState.reflowCommand->GetChildFrame(childFrame);
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PRBool result = mFixedFrames.DeleteFrame(aPresContext, childFrame);
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NS_ASSERTION(result, "didn't find frame to delete");
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} else if (nsIReflowCommand::FrameInserted == type) {
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// Get the previous sibling
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nsIFrame* prevSibling;
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aReflowState.reflowCommand->GetPrevSiblingFrame(prevSibling);
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// Insert the new frames
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aReflowState.reflowCommand->GetChildFrame(newFrames);
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NS_ASSERTION(nsnull != newFrames, "null child list");
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numFrames = LengthOf(newFrames);
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mFixedFrames.InsertFrames(nsnull, prevSibling, newFrames);
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} else {
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NS_ASSERTION(PR_FALSE, "unexpected reflow type");
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}
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// For inserted and appended reflow commands we need to reflow the
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// newly added frames
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if ((nsIReflowCommand::FrameAppended == type) ||
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(nsIReflowCommand::FrameInserted == type)) {
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while (numFrames-- > 0) {
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nsReflowStatus status;
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ReflowFixedFrame(aPresContext, aReflowState, newFrames, PR_TRUE, status);
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newFrames->GetNextSibling(newFrames);
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}
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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ViewportFrame::Reflow(nsIPresContext& aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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@ -68,46 +270,88 @@ ViewportFrame::Reflow(nsIPresContext& aPresContext,
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// Initialize OUT parameter
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aStatus = NS_FRAME_COMPLETE;
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nsIFrame* nextFrame = nsnull;
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PRBool isHandled = PR_FALSE;
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// Check for an incremental reflow
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if (eReflowReason_Incremental == aReflowState.reason) {
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// See if we're the target frame
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nsIFrame* targetFrame;
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aReflowState.reflowCommand->GetTarget(targetFrame);
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if (this == targetFrame) {
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// The viewport does not support being the target of an incremental
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nsIAtom* listName;
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PRBool isFixedChild;
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// It's targeted at us. It better be for a 'fixed' frame
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// reflow command
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NS_ASSERTION(PR_FALSE, "unexpected reflow command target");
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aReflowState.reflowCommand->GetChildListName(listName);
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isFixedChild = nsLayoutAtoms::fixedList == listName;
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NS_IF_RELEASE(listName);
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NS_ASSERTION(isFixedChild, "unexpected child list");
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if (isFixedChild) {
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IncrementalReflow(aPresContext, aReflowState);
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isHandled = PR_TRUE;
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}
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} else {
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nsIFrame* nextFrame;
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// Get the next frame in the reflow chain
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aReflowState.reflowCommand->GetNext(nextFrame);
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NS_ASSERTION(nextFrame == mFrames.FirstChild(), "unexpected next reflow command frame");
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}
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}
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// Reflow our one and only child frame
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if (mFrames.NotEmpty()) {
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nsIFrame* kidFrame = mFrames.FirstChild();
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nsHTMLReflowMetrics desiredSize(nsnull);
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nsSize availableSpace(aReflowState.availableWidth,
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aReflowState.availableHeight);
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nsHTMLReflowState kidReflowState(aPresContext, kidFrame,
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aReflowState, availableSpace);
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if (!isHandled) {
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if ((eReflowReason_Incremental == aReflowState.reason) &&
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(mFixedFrames.ContainsFrame(nextFrame))) {
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// Reflow the 'fixed' frame that's the next frame in the reflow path
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nsReflowStatus kidStatus;
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ReflowFixedFrame(aPresContext, aReflowState, nextFrame, PR_FALSE,
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kidStatus);
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// Reflow the frame
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nsIHTMLReflow* htmlReflow;
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if (NS_OK == kidFrame->QueryInterface(kIHTMLReflowIID, (void**)&htmlReflow)) {
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kidReflowState.computedHeight = aReflowState.availableHeight;
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ReflowChild(kidFrame, aPresContext, desiredSize, kidReflowState,
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aStatus);
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nsRect rect(0, 0, desiredSize.width, desiredSize.height);
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kidFrame->SetRect(rect);
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// XXX Make sure the frame is repainted. For the time being, since we
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// have no idea what actually changed repaint it all...
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nsIView* view;
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nextFrame->GetView(view);
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if (nsnull != view) {
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nsIViewManager* viewMgr;
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view->GetViewManager(viewMgr);
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if (nsnull != viewMgr) {
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viewMgr->UpdateView(view, (nsIRegion*)nsnull, NS_VMREFRESH_NO_SYNC);
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NS_RELEASE(viewMgr);
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}
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}
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// XXX We should resolve the details of who/when DidReflow()
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// notifications are sent...
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htmlReflow->DidReflow(aPresContext, NS_FRAME_REFLOW_FINISHED);
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} else {
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// Reflow our one and only principal child frame
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if (mFrames.NotEmpty()) {
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nsIFrame* kidFrame = mFrames.FirstChild();
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nsHTMLReflowMetrics kidDesiredSize(nsnull);
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nsSize availableSpace(aReflowState.availableWidth,
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aReflowState.availableHeight);
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nsHTMLReflowState kidReflowState(aPresContext, kidFrame,
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aReflowState, availableSpace);
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// Reflow the frame
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nsIHTMLReflow* htmlReflow;
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if (NS_OK == kidFrame->QueryInterface(kIHTMLReflowIID, (void**)&htmlReflow)) {
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kidReflowState.computedHeight = aReflowState.availableHeight;
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ReflowChild(kidFrame, aPresContext, kidDesiredSize, kidReflowState,
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aStatus);
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nsRect rect(0, 0, kidDesiredSize.width, kidDesiredSize.height);
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kidFrame->SetRect(rect);
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// XXX We should resolve the details of who/when DidReflow()
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// notifications are sent...
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htmlReflow->DidReflow(aPresContext, NS_FRAME_REFLOW_FINISHED);
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}
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}
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// If it's a 'initial', 'resize', or 'style change' reflow command (anything
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// but incremental), then reflow all the fixed positioned child frames
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if (eReflowReason_Incremental != aReflowState.reason) {
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ReflowFixedFrames(aPresContext, aReflowState);
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}
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}
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}
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@ -41,8 +41,10 @@
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#include "nsHTMLIIDs.h"
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#include "nsDOMEvent.h"
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#include "nsIScrollableView.h"
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#include "nsWidgetsCID.h"
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static NS_DEFINE_IID(kScrollViewIID, NS_ISCROLLABLEVIEW_IID);
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static NS_DEFINE_IID(kCChildCID, NS_CHILD_CID);
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NS_IMETHODIMP
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nsHTMLContainerFrame::Paint(nsIPresContext& aPresContext,
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@ -213,7 +215,7 @@ nsHTMLContainerFrame::CreateViewForFrame(nsIPresContext& aPresContext,
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aFrame));
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aForce = PR_TRUE;
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} else if (NS_STYLE_POSITION_ABSOLUTE == position->mPosition) {
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} else if (position->IsAbsolutelyPositioned()) {
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NS_FRAME_LOG(NS_FRAME_TRACE_CALLS,
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("nsHTMLContainerFrame::CreateViewForFrame: frame=%p relatively positioned",
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aFrame));
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@ -326,6 +328,12 @@ nsHTMLContainerFrame::CreateViewForFrame(nsIPresContext& aPresContext,
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viewManager->SetViewContentTransparency(view, PR_TRUE);
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}
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// XXX If it's fixed positioned, then create a widget so it floats
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// above the scrolling area
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if (NS_STYLE_POSITION_FIXED == position->mPosition) {
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view->CreateWidget(kCChildCID);
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}
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viewManager->SetViewOpacity(view, color->mOpacity);
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NS_RELEASE(viewManager);
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}
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@ -110,7 +110,7 @@ nsHTMLReflowState::DetermineFrameType(nsIPresContext& aPresContext)
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frame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct*&)display);
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const nsStylePosition* pos;
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frame->GetStyleData(eStyleStruct_Position, (const nsStyleStruct*&)pos);
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if ((nsnull != pos) && (NS_STYLE_POSITION_ABSOLUTE == pos->mPosition)) {
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if (pos->IsAbsolutelyPositioned()) {
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frameType = NS_CSS_FRAME_TYPE_ABSOLUTE;
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}
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else if (NS_STYLE_FLOAT_NONE != display->mFloats) {
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@ -15,9 +15,11 @@
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
|
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*/
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#include "nsHTMLParts.h"
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#include "nsContainerFrame.h"
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#include "nsHTMLParts.h"
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#include "nsHTMLIIDs.h"
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#include "nsLayoutAtoms.h"
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#include "nsIViewManager.h"
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static NS_DEFINE_IID(kIFrameIID, NS_IFRAME_IID);
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@ -35,12 +37,39 @@ static NS_DEFINE_IID(kIFrameIID, NS_IFRAME_IID);
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*/
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class ViewportFrame : public nsContainerFrame {
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public:
|
||||
NS_IMETHOD DeleteFrame(nsIPresContext& aPresContext);
|
||||
|
||||
NS_IMETHOD SetInitialChildList(nsIPresContext& aPresContext,
|
||||
nsIAtom* aListName,
|
||||
nsIFrame* aChildList);
|
||||
|
||||
NS_IMETHOD GetAdditionalChildListName(PRInt32 aIndex,
|
||||
nsIAtom*& aListName) const;
|
||||
|
||||
NS_IMETHOD FirstChild(nsIAtom* aListName, nsIFrame*& aFirstChild) const;
|
||||
|
||||
NS_IMETHOD Reflow(nsIPresContext& aPresContext,
|
||||
nsHTMLReflowMetrics& aDesiredSize,
|
||||
const nsHTMLReflowState& aReflowState,
|
||||
nsReflowStatus& aStatus);
|
||||
|
||||
NS_IMETHOD GetFrameName(nsString& aResult) const;
|
||||
|
||||
protected:
|
||||
nsresult IncrementalReflow(nsIPresContext& aPresContext,
|
||||
const nsHTMLReflowState& aReflowState);
|
||||
|
||||
nsresult ReflowFixedFrame(nsIPresContext& aPresContext,
|
||||
const nsHTMLReflowState& aReflowState,
|
||||
nsIFrame* aKidFrame,
|
||||
PRBool aInitialReflow,
|
||||
nsReflowStatus& aStatus) const;
|
||||
|
||||
void ReflowFixedFrames(nsIPresContext& aPresContext,
|
||||
const nsHTMLReflowState& aReflowState) const;
|
||||
|
||||
private:
|
||||
nsFrameList mFixedFrames; // additional named child list
|
||||
};
|
||||
|
||||
//----------------------------------------------------------------------
|
||||
@ -56,6 +85,179 @@ NS_NewViewportFrame(nsIFrame*& aResult)
|
||||
return NS_OK;
|
||||
}
|
||||
|
||||
NS_IMETHODIMP
|
||||
ViewportFrame::DeleteFrame(nsIPresContext& aPresContext)
|
||||
{
|
||||
mFixedFrames.DeleteFrames(aPresContext);
|
||||
return nsContainerFrame::DeleteFrame(aPresContext);
|
||||
}
|
||||
|
||||
NS_IMETHODIMP
|
||||
ViewportFrame::SetInitialChildList(nsIPresContext& aPresContext,
|
||||
nsIAtom* aListName,
|
||||
nsIFrame* aChildList)
|
||||
{
|
||||
nsresult rv;
|
||||
|
||||
if (nsLayoutAtoms::fixedList == aListName) {
|
||||
mFixedFrames.SetFrames(aChildList);
|
||||
rv = NS_OK;
|
||||
} else {
|
||||
rv = nsContainerFrame::SetInitialChildList(aPresContext, aListName, aChildList);
|
||||
}
|
||||
|
||||
return rv;
|
||||
}
|
||||
|
||||
NS_IMETHODIMP
|
||||
ViewportFrame::GetAdditionalChildListName(PRInt32 aIndex,
|
||||
nsIAtom*& aListName) const
|
||||
{
|
||||
nsIAtom* atom = nsnull;
|
||||
|
||||
if (aIndex < 0) {
|
||||
return NS_ERROR_INVALID_ARG;
|
||||
|
||||
} else if (0 == aIndex) {
|
||||
atom = nsLayoutAtoms::fixedList;
|
||||
NS_ADDREF(atom);
|
||||
}
|
||||
|
||||
aListName = atom;
|
||||
return NS_OK;
|
||||
}
|
||||
|
||||
NS_IMETHODIMP
|
||||
ViewportFrame::FirstChild(nsIAtom* aListName, nsIFrame*& aFirstChild) const
|
||||
{
|
||||
if (aListName == nsLayoutAtoms::fixedList) {
|
||||
aFirstChild = mFixedFrames.FirstChild();
|
||||
return NS_OK;
|
||||
}
|
||||
|
||||
return nsContainerFrame::FirstChild(aListName, aFirstChild);
|
||||
}
|
||||
|
||||
nsresult
|
||||
ViewportFrame::ReflowFixedFrame(nsIPresContext& aPresContext,
|
||||
const nsHTMLReflowState& aReflowState,
|
||||
nsIFrame* aKidFrame,
|
||||
PRBool aInitialReflow,
|
||||
nsReflowStatus& aStatus) const
|
||||
{
|
||||
// Reflow the frame
|
||||
nsIHTMLReflow* htmlReflow;
|
||||
nsresult rv;
|
||||
|
||||
rv = aKidFrame->QueryInterface(kIHTMLReflowIID, (void**)&htmlReflow);
|
||||
if (NS_SUCCEEDED(rv)) {
|
||||
htmlReflow->WillReflow(aPresContext);
|
||||
|
||||
nsHTMLReflowMetrics kidDesiredSize(nsnull);
|
||||
nsSize availSize(aReflowState.availableWidth, NS_UNCONSTRAINEDSIZE);
|
||||
nsHTMLReflowState kidReflowState(aPresContext, aKidFrame, aReflowState, availSize);
|
||||
|
||||
// If it's the initial reflow, then override the reflow reason. This is
|
||||
// used when frames are inserted incrementally
|
||||
if (aInitialReflow) {
|
||||
kidReflowState.reason = eReflowReason_Initial;
|
||||
}
|
||||
|
||||
// XXX Temporary hack until the block/inline code starts using 'computedWidth'
|
||||
kidReflowState.availableWidth = kidReflowState.computedWidth;
|
||||
htmlReflow->Reflow(aPresContext, kidDesiredSize, kidReflowState, aStatus);
|
||||
|
||||
// Position the child
|
||||
nsRect rect(kidReflowState.computedOffsets.left,
|
||||
kidReflowState.computedOffsets.top,
|
||||
kidDesiredSize.width, kidDesiredSize.height);
|
||||
aKidFrame->SetRect(rect);
|
||||
htmlReflow->DidReflow(aPresContext, NS_FRAME_REFLOW_FINISHED);
|
||||
}
|
||||
|
||||
return rv;
|
||||
}
|
||||
|
||||
// Called by Reflow() to reflow all of the fixed positioned child frames.
|
||||
// This is only done for 'initial', 'resize', and 'style change' reflow commands
|
||||
void
|
||||
ViewportFrame::ReflowFixedFrames(nsIPresContext& aPresContext,
|
||||
const nsHTMLReflowState& aReflowState) const
|
||||
{
|
||||
NS_PRECONDITION(eReflowReason_Incremental != aReflowState.reason,
|
||||
"unexpected reflow reason");
|
||||
|
||||
nsIFrame* kidFrame;
|
||||
for (kidFrame = mFixedFrames.FirstChild(); nsnull != kidFrame; kidFrame->GetNextSibling(kidFrame)) {
|
||||
// Reflow the frame using our reflow reason
|
||||
nsReflowStatus kidStatus;
|
||||
ReflowFixedFrame(aPresContext, aReflowState, kidFrame, PR_FALSE,
|
||||
kidStatus);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Called by Reflow() to handle the case where it's an incremental reflow
|
||||
* of a fixed child frame
|
||||
*/
|
||||
nsresult
|
||||
ViewportFrame::IncrementalReflow(nsIPresContext& aPresContext,
|
||||
const nsHTMLReflowState& aReflowState)
|
||||
{
|
||||
nsIReflowCommand::ReflowType type;
|
||||
nsIFrame* newFrames;
|
||||
PRInt32 numFrames;
|
||||
|
||||
// Get the type of reflow command
|
||||
aReflowState.reflowCommand->GetType(type);
|
||||
|
||||
// Handle each specific type
|
||||
if (nsIReflowCommand::FrameAppended == type) {
|
||||
// Add the frames to our list of fixed position frames
|
||||
aReflowState.reflowCommand->GetChildFrame(newFrames);
|
||||
NS_ASSERTION(nsnull != newFrames, "null child list");
|
||||
numFrames = LengthOf(newFrames);
|
||||
mFixedFrames.AppendFrames(nsnull, newFrames);
|
||||
|
||||
} else if (nsIReflowCommand::FrameRemoved == type) {
|
||||
// Get the new frame
|
||||
nsIFrame* childFrame;
|
||||
aReflowState.reflowCommand->GetChildFrame(childFrame);
|
||||
|
||||
PRBool result = mFixedFrames.DeleteFrame(aPresContext, childFrame);
|
||||
NS_ASSERTION(result, "didn't find frame to delete");
|
||||
|
||||
} else if (nsIReflowCommand::FrameInserted == type) {
|
||||
// Get the previous sibling
|
||||
nsIFrame* prevSibling;
|
||||
aReflowState.reflowCommand->GetPrevSiblingFrame(prevSibling);
|
||||
|
||||
// Insert the new frames
|
||||
aReflowState.reflowCommand->GetChildFrame(newFrames);
|
||||
NS_ASSERTION(nsnull != newFrames, "null child list");
|
||||
numFrames = LengthOf(newFrames);
|
||||
mFixedFrames.InsertFrames(nsnull, prevSibling, newFrames);
|
||||
|
||||
} else {
|
||||
NS_ASSERTION(PR_FALSE, "unexpected reflow type");
|
||||
}
|
||||
|
||||
// For inserted and appended reflow commands we need to reflow the
|
||||
// newly added frames
|
||||
if ((nsIReflowCommand::FrameAppended == type) ||
|
||||
(nsIReflowCommand::FrameInserted == type)) {
|
||||
|
||||
while (numFrames-- > 0) {
|
||||
nsReflowStatus status;
|
||||
|
||||
ReflowFixedFrame(aPresContext, aReflowState, newFrames, PR_TRUE, status);
|
||||
newFrames->GetNextSibling(newFrames);
|
||||
}
|
||||
}
|
||||
|
||||
return NS_OK;
|
||||
}
|
||||
|
||||
NS_IMETHODIMP
|
||||
ViewportFrame::Reflow(nsIPresContext& aPresContext,
|
||||
nsHTMLReflowMetrics& aDesiredSize,
|
||||
@ -68,46 +270,88 @@ ViewportFrame::Reflow(nsIPresContext& aPresContext,
|
||||
// Initialize OUT parameter
|
||||
aStatus = NS_FRAME_COMPLETE;
|
||||
|
||||
nsIFrame* nextFrame = nsnull;
|
||||
PRBool isHandled = PR_FALSE;
|
||||
|
||||
// Check for an incremental reflow
|
||||
if (eReflowReason_Incremental == aReflowState.reason) {
|
||||
// See if we're the target frame
|
||||
nsIFrame* targetFrame;
|
||||
aReflowState.reflowCommand->GetTarget(targetFrame);
|
||||
if (this == targetFrame) {
|
||||
// The viewport does not support being the target of an incremental
|
||||
nsIAtom* listName;
|
||||
PRBool isFixedChild;
|
||||
|
||||
// It's targeted at us. It better be for a 'fixed' frame
|
||||
// reflow command
|
||||
NS_ASSERTION(PR_FALSE, "unexpected reflow command target");
|
||||
aReflowState.reflowCommand->GetChildListName(listName);
|
||||
isFixedChild = nsLayoutAtoms::fixedList == listName;
|
||||
NS_IF_RELEASE(listName);
|
||||
NS_ASSERTION(isFixedChild, "unexpected child list");
|
||||
|
||||
if (isFixedChild) {
|
||||
IncrementalReflow(aPresContext, aReflowState);
|
||||
isHandled = PR_TRUE;
|
||||
}
|
||||
|
||||
} else {
|
||||
nsIFrame* nextFrame;
|
||||
// Get the next frame in the reflow chain
|
||||
aReflowState.reflowCommand->GetNext(nextFrame);
|
||||
NS_ASSERTION(nextFrame == mFrames.FirstChild(), "unexpected next reflow command frame");
|
||||
}
|
||||
}
|
||||
|
||||
// Reflow our one and only child frame
|
||||
if (mFrames.NotEmpty()) {
|
||||
nsIFrame* kidFrame = mFrames.FirstChild();
|
||||
nsHTMLReflowMetrics desiredSize(nsnull);
|
||||
nsSize availableSpace(aReflowState.availableWidth,
|
||||
aReflowState.availableHeight);
|
||||
nsHTMLReflowState kidReflowState(aPresContext, kidFrame,
|
||||
aReflowState, availableSpace);
|
||||
if (!isHandled) {
|
||||
if ((eReflowReason_Incremental == aReflowState.reason) &&
|
||||
(mFixedFrames.ContainsFrame(nextFrame))) {
|
||||
// Reflow the 'fixed' frame that's the next frame in the reflow path
|
||||
nsReflowStatus kidStatus;
|
||||
ReflowFixedFrame(aPresContext, aReflowState, nextFrame, PR_FALSE,
|
||||
kidStatus);
|
||||
|
||||
// Reflow the frame
|
||||
nsIHTMLReflow* htmlReflow;
|
||||
if (NS_OK == kidFrame->QueryInterface(kIHTMLReflowIID, (void**)&htmlReflow)) {
|
||||
kidReflowState.computedHeight = aReflowState.availableHeight;
|
||||
ReflowChild(kidFrame, aPresContext, desiredSize, kidReflowState,
|
||||
aStatus);
|
||||
|
||||
nsRect rect(0, 0, desiredSize.width, desiredSize.height);
|
||||
kidFrame->SetRect(rect);
|
||||
// XXX Make sure the frame is repainted. For the time being, since we
|
||||
// have no idea what actually changed repaint it all...
|
||||
nsIView* view;
|
||||
nextFrame->GetView(view);
|
||||
if (nsnull != view) {
|
||||
nsIViewManager* viewMgr;
|
||||
view->GetViewManager(viewMgr);
|
||||
if (nsnull != viewMgr) {
|
||||
viewMgr->UpdateView(view, (nsIRegion*)nsnull, NS_VMREFRESH_NO_SYNC);
|
||||
NS_RELEASE(viewMgr);
|
||||
}
|
||||
}
|
||||
|
||||
// XXX We should resolve the details of who/when DidReflow()
|
||||
// notifications are sent...
|
||||
htmlReflow->DidReflow(aPresContext, NS_FRAME_REFLOW_FINISHED);
|
||||
} else {
|
||||
// Reflow our one and only principal child frame
|
||||
if (mFrames.NotEmpty()) {
|
||||
nsIFrame* kidFrame = mFrames.FirstChild();
|
||||
nsHTMLReflowMetrics kidDesiredSize(nsnull);
|
||||
nsSize availableSpace(aReflowState.availableWidth,
|
||||
aReflowState.availableHeight);
|
||||
nsHTMLReflowState kidReflowState(aPresContext, kidFrame,
|
||||
aReflowState, availableSpace);
|
||||
|
||||
// Reflow the frame
|
||||
nsIHTMLReflow* htmlReflow;
|
||||
if (NS_OK == kidFrame->QueryInterface(kIHTMLReflowIID, (void**)&htmlReflow)) {
|
||||
kidReflowState.computedHeight = aReflowState.availableHeight;
|
||||
ReflowChild(kidFrame, aPresContext, kidDesiredSize, kidReflowState,
|
||||
aStatus);
|
||||
|
||||
nsRect rect(0, 0, kidDesiredSize.width, kidDesiredSize.height);
|
||||
kidFrame->SetRect(rect);
|
||||
|
||||
// XXX We should resolve the details of who/when DidReflow()
|
||||
// notifications are sent...
|
||||
htmlReflow->DidReflow(aPresContext, NS_FRAME_REFLOW_FINISHED);
|
||||
}
|
||||
}
|
||||
|
||||
// If it's a 'initial', 'resize', or 'style change' reflow command (anything
|
||||
// but incremental), then reflow all the fixed positioned child frames
|
||||
if (eReflowReason_Incremental != aReflowState.reason) {
|
||||
ReflowFixedFrames(aPresContext, aReflowState);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user