/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* ***** BEGIN LICENSE BLOCK ***** * Version: NPL 1.1/GPL 2.0/LGPL 2.1 * * The contents of this file are subject to the Netscape Public License * Version 1.1 (the "License"); you may not use this file except in * compliance with the License. You may obtain a copy of the License at * http://www.mozilla.org/NPL/ * * Software distributed under the License is distributed on an "AS IS" basis, * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License * for the specific language governing rights and limitations under the * License. * * The Original Code is Mozilla Communicator client code. * * The Initial Developer of the Original Code is * Netscape Communications Corporation. * Portions created by the Initial Developer are Copyright (C) 1998 * the Initial Developer. All Rights Reserved. * * Contributor(s): * * Alternatively, the contents of this file may be used under the terms of * either the GNU General Public License Version 2 or later (the "GPL"), or * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), * in which case the provisions of the GPL or the LGPL are applicable instead * of those above. If you wish to allow use of your version of this file only * under the terms of either the GPL or the LGPL, and not to allow others to * use your version of this file under the terms of the NPL, indicate your * decision by deleting the provisions above and replace them with the notice * and other provisions required by the GPL or the LGPL. If you do not delete * the provisions above, a recipient may use your version of this file under * the terms of any one of the NPL, the GPL or the LGPL. * * ***** END LICENSE BLOCK ***** */ // // Eric Vaughan // Netscape Communications // // See documentation in associated header file // #include "nsStackFrame.h" #include "nsIStyleContext.h" #include "nsIPresContext.h" #include "nsIContent.h" #include "nsCOMPtr.h" #include "nsHTMLIIDs.h" #include "nsUnitConversion.h" #include "nsINameSpaceManager.h" #include "nsXULAtoms.h" #include "nsHTMLAtoms.h" #include "nsHTMLParts.h" #include "nsIPresShell.h" #include "nsStyleChangeList.h" #include "nsCSSRendering.h" #include "nsIViewManager.h" #include "nsBoxLayoutState.h" #include "nsStackLayout.h" nsresult NS_NewStackFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame, nsIBoxLayout* aLayoutManager) { NS_PRECONDITION(aNewFrame, "null OUT ptr"); if (nsnull == aNewFrame) { return NS_ERROR_NULL_POINTER; } nsStackFrame* it = new (aPresShell) nsStackFrame(aPresShell, aLayoutManager); if (nsnull == it) return NS_ERROR_OUT_OF_MEMORY; *aNewFrame = it; return NS_OK; } // NS_NewStackFrame nsStackFrame::nsStackFrame(nsIPresShell* aPresShell, nsIBoxLayout* aLayoutManager):nsBoxFrame(aPresShell) { // if no layout manager specified us the stack layout nsCOMPtr layout = aLayoutManager; if (layout == nsnull) { NS_NewStackLayout(aPresShell, layout); } SetLayoutManager(layout); } NS_IMETHODIMP nsStackFrame::GetFrameForPoint(nsIPresContext* aPresContext, const nsPoint& aPoint, nsFramePaintLayer aWhichLayer, nsIFrame** aFrame) { return nsBoxFrame::GetFrameForPoint(aPresContext, aPoint, aWhichLayer, aFrame); /* nsRect r(mRect); if (!r.Contains(aPoint)) return NS_ERROR_FAILURE; // is it inside our border, padding, and debugborder or insets? nsMargin im(0,0,0,0); GetInset(im); nsMargin border(0,0,0,0); nsStyleBorderPadding bPad; aFrame->GetStyle(eStyleStruct_BorderPaddingShortcut, (nsStyleStruct&)bPad); bPad.GetBorderPadding(borderPadding); r.Deflate(im); r.Deflate(border); // no? Then it must be in our border so return us. if (!r.Contains(aPoint)) { *aFrame = this; return NS_OK; } nsIFrame* first = mFrames.FirstChild(); // look at the children in reverse order nsresult rv; if (first) { nsPoint tmp; tmp.MoveTo(aPoint.x - mRect.x, aPoint.y - mRect.y); rv = GetStackedFrameForPoint(aPresContext, first, nsRect(0,0,mRect.width, mRect.height), tmp, aFrame); } else rv = NS_ERROR_FAILURE; if (NS_FAILED(rv)) { const nsStyleColor* color = (const nsStyleColor*)mStyleContext->GetStyleData(eStyleStruct_Color); PRBool transparentBG = NS_STYLE_BG_COLOR_TRANSPARENT == (color->mBackgroundFlags & NS_STYLE_BG_COLOR_TRANSPARENT); PRBool backgroundImage = (color->mBackgroundImage.Length() > 0); if (!transparentBG || backgroundImage) { *aFrame = this; rv = NS_OK; } } #ifdef NS_DEBUG printf("\n------------"); if (*aFrame) nsFrame::ListTag(stdout, *aFrame); printf("--------------\n"); #endif return rv; */ } nsresult nsStackFrame::GetStackedFrameForPoint(nsIPresContext* aPresContext, nsIFrame* aChild, const nsRect& aRect, const nsPoint& aPoint, nsIFrame** aFrame) { // look at all the children is reverse order. Use the stack to do // this. nsIFrame* next; nsresult rv; aChild->GetNextSibling(&next); if (next != nsnull) { rv = GetStackedFrameForPoint(aPresContext, next, aRect, aPoint, aFrame); if (NS_SUCCEEDED(rv) && *aFrame) return rv; } rv = aChild->GetFrameForPoint(aPresContext, aPoint, NS_FRAME_PAINT_LAYER_FOREGROUND, aFrame); if (NS_SUCCEEDED(rv) && *aFrame) return rv; return aChild->GetFrameForPoint(aPresContext, aPoint, NS_FRAME_PAINT_LAYER_BACKGROUND, aFrame); } void nsStackFrame::PaintChildren(nsIPresContext* aPresContext, nsIRenderingContext& aRenderingContext, const nsRect& aDirtyRect, nsFramePaintLayer aWhichLayer, PRUint32 aFlags) { // we need to make sure we paint background then foreground of each child because they // are stacked. Otherwise the foreground of the first child could be on the top of the // background of the second. if (aWhichLayer == NS_FRAME_PAINT_LAYER_BACKGROUND) { nsBoxFrame::PaintChildren(aPresContext, aRenderingContext, aDirtyRect, aWhichLayer); } } // Paint one child frame void nsStackFrame::PaintChild(nsIPresContext* aPresContext, nsIRenderingContext& aRenderingContext, const nsRect& aDirtyRect, nsIFrame* aFrame, nsFramePaintLayer aWhichLayer, PRUint32 aFlags) { // we need to make sure we paint background then foreground of each child because they // are stacked. Otherwise the foreground of the first child could be on the top of the // background of the second. if (aWhichLayer == NS_FRAME_PAINT_LAYER_BACKGROUND) { nsBoxFrame::PaintChild(aPresContext, aRenderingContext, aDirtyRect, aFrame, NS_FRAME_PAINT_LAYER_BACKGROUND); nsBoxFrame::PaintChild(aPresContext, aRenderingContext, aDirtyRect, aFrame, NS_FRAME_PAINT_LAYER_FOREGROUND); } }