зеркало из https://github.com/mozilla/gecko-dev.git
Starting to pay attention to CSS positioning properties
This commit is contained in:
troy
Родитель
42943b6cf9
Коммит
4366741d31
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@ -15,12 +15,21 @@
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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 "nsAbsoluteFrame.h"
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#include "nsIContent.h"
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#include "nsIContentDelegate.h"
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#include "nsViewsCID.h"
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#include "nsIPresContext.h"
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#include "nsIPtr.h"
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#include "nsIStyleContext.h"
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#include "nsIView.h"
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#include "nsIViewManager.h"
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#include "nsAbsoluteFrame.h"
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#include "nsBodyFrame.h"
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#include "nsStyleConsts.h"
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#include "nsViewsCID.h"
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static NS_DEFINE_IID(kStylePositionSID, NS_STYLEPOSITION_SID);
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NS_DEF_PTR(nsIStyleContext);
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nsresult
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AbsoluteFrame::NewFrame(nsIFrame** aInstancePtrResult,
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@ -52,6 +61,39 @@ AbsoluteFrame::~AbsoluteFrame()
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{
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}
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nsIView* AbsoluteFrame::CreateView(const nsRect& aRect)
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{
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nsIFrame* parent;
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nsIView* parentView;
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nsIView* view;
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// Create a view for the frame and position it
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// XXX This isn't correct. We should look for a containing frame that is absolutely
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// positioned and use its local coordinate system, or the root content frame
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GetParentWithView(parent);
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parent->GetView(parentView);
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static NS_DEFINE_IID(kViewCID, NS_VIEW_CID);
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static NS_DEFINE_IID(kIViewIID, NS_IVIEW_IID);
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nsresult result = NSRepository::CreateInstance(kViewCID,
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nsnull,
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kIViewIID,
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(void **)&view);
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if (NS_OK == result) {
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nsIViewManager* viewManager = parentView->GetViewManager();
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// Initialize the view
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NS_ASSERTION(nsnull != viewManager, "null view manager");
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view->Init(viewManager, aRect, parentView);
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viewManager->InsertChild(parentView, view, 0);
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NS_RELEASE(viewManager);
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}
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NS_RELEASE(parentView);
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return view;
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}
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NS_METHOD AbsoluteFrame::ResizeReflow(nsIPresContext* aPresContext,
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nsReflowMetrics& aDesiredSize,
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const nsSize& aMaxSize,
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@ -60,60 +102,87 @@ NS_METHOD AbsoluteFrame::ResizeReflow(nsIPresContext* aPresContext,
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{
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// Have we created the absolutely positioned item yet?
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if (nsnull == mFrame) {
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// Create the absolutely positioned item as a pseudo-frame child. We'll
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// also create a view
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nsIContentDelegate* delegate = mContent->GetDelegate(aPresContext);
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// If the content object is a container then wrap it in a body pseudo-frame
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if (mContent->CanContainChildren()) {
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nsBodyFrame::NewFrame(&mFrame, mContent, mIndexInParent, this);
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mFrame= delegate->CreateFrame(aPresContext, mContent, mIndexInParent, this);
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NS_RELEASE(delegate);
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// Resolve style for the pseudo-frame. We can't use our style context
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nsIStyleContextPtr styleContext = aPresContext->ResolveStyleContextFor(mContent, this);
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mFrame->SetStyleContext(styleContext);
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// Set the style context for the frame
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mFrame->SetStyleContext(mStyleContext);
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} else {
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// Create the absolutely positioned item as a pseudo-frame child. We'll
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// also create a view
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nsIContentDelegate* delegate = mContent->GetDelegate(aPresContext);
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mFrame= delegate->CreateFrame(aPresContext, mContent, mIndexInParent, this);
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NS_RELEASE(delegate);
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// Set the style context for the frame
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mFrame->SetStyleContext(mStyleContext);
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}
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#if 0
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// Get the containing block
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nsIFrame* containingBlock = GetContainingBlock();
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// Determine the view's rect
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nsRect rect;
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ComputeViews
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#endif
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// Compute the offset and size for the view based on the position properties
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nsStylePosition* position = (nsStylePosition*)mStyleContext->GetData(kStylePositionSID);
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nsRect rect;
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if (NS_STYLE_POSITION_VALUE_AUTO == position->mLeftOffsetFlags) {
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rect.x = 0;
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// Left offset should be automatically computed
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if (NS_STYLE_POSITION_VALUE_AUTO == position->mWidthFlags) {
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// When all three properties are 'auto' the width is the same as the
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// width of the containing block
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rect.width = 3500; // XXX Fix me
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} else {
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rect.width = position->mWidth;
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// rect.x = containingRect->width - rect.width;
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}
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} else {
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rect.x = position->mLeftOffset;
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// rect.width = containingRect->width - rect.x;
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}
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// Create a view for the frame
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nsIView* view = CreateView(rect);
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mFrame->SetView(view);
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NS_RELEASE(view);
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// Resize reflow the anchored item into the available space
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mFrame->ResizeReflow(aPresContext, aDesiredSize, aMaxSize, nsnull, aStatus);
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mFrame->SizeTo(aDesiredSize.width, aDesiredSize.height);
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// Create a view for the frame and position it
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// XXX This isn't correct. We should look for a containing frame that is absolutely
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// positioned and use its local coordinate system, or the root content frame
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nsIFrame* parent;
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nsIView* parentView;
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nsIView* view;
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GetParentWithView(parent);
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parent->GetView(parentView);
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static NS_DEFINE_IID(kViewCID, NS_VIEW_CID);
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static NS_DEFINE_IID(kIViewIID, NS_IVIEW_IID);
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nsresult result = NSRepository::CreateInstance(kViewCID,
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nsnull,
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kIViewIID,
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(void **)&view);
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if (NS_OK == result) {
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nsRect rect(0, 0, aDesiredSize.width, aDesiredSize.height);
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nsIViewManager* viewManager = parentView->GetViewManager();
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// Initialize the view
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NS_ASSERTION(nsnull != viewManager, "null view manager");
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view->Init(viewManager, rect, parentView);
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viewManager->InsertChild(parentView, view, 0);
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NS_RELEASE(viewManager);
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mFrame->SetView(view);
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NS_RELEASE(view);
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}
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NS_RELEASE(parentView);
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}
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// Return our desired size as (0, 0)
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return nsFrame::ResizeReflow(aPresContext, aDesiredSize, aMaxSize, aMaxElementSize, aStatus);
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}
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NS_METHOD AbsoluteFrame::ListTag(FILE* out) const
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NS_METHOD AbsoluteFrame::List(FILE* out, PRInt32 aIndent) const
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{
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// Indent
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for (PRInt32 i = aIndent; --i >= 0; ) fputs(" ", out);
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// Output the tag
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fputs("*absolute", out);
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fprintf(out, "(%d)@%p", mIndexInParent, this);
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fprintf(out, "(%d)@%p ", mIndexInParent, this);
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// Output the rect
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out << mRect;
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// List the absolutely positioned frame
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fputs("<\n", out);
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mFrame->List(out, aIndent + 1);
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fputs(">\n", out);
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return NS_OK;
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}
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@ -39,7 +39,8 @@ public:
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const nsSize& aMaxSize,
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nsSize* aMaxElementSize,
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ReflowStatus& aStatus);
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NS_IMETHOD ListTag(FILE* out = stdout) const;
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NS_IMETHOD List(FILE* out = stdout, PRInt32 aIndent = 0) const;
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protected:
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nsIFrame* mFrame; // the actual absolutely positioned frame
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@ -51,6 +52,8 @@ protected:
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nsIFrame* aParent);
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virtual ~AbsoluteFrame();
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nsIView* CreateView(const nsRect& aRect);
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};
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#endif /* nsAbsoluteFrame_h___ */
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