2001-09-28 20:14:13 +00:00
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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2004-04-18 14:30:37 +00:00
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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1998-04-13 20:24:54 +00:00
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*
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2004-04-18 14:30:37 +00:00
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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1998-04-13 20:24:54 +00:00
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*
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2001-09-28 20:14:13 +00:00
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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1998-04-13 20:24:54 +00:00
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*
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1999-11-06 03:40:37 +00:00
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* The Original Code is mozilla.org code.
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*
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2004-04-18 14:30:37 +00:00
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* The Initial Developer of the Original Code is
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2001-09-28 20:14:13 +00:00
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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1999-11-06 03:40:37 +00:00
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*
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2001-09-28 20:14:13 +00:00
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* Contributor(s):
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2006-12-20 03:52:34 +00:00
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* Mats Palmgren <mats.palmgren@bredband.net>
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2001-09-28 20:14:13 +00:00
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*
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* Alternatively, the contents of this file may be used under the terms of
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2004-04-18 14:30:37 +00:00
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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2001-09-28 20:14:13 +00:00
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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2004-04-18 14:30:37 +00:00
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* use your version of this file under the terms of the MPL, indicate your
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2001-09-28 20:14:13 +00:00
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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2004-04-18 14:30:37 +00:00
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* the terms of any one of the MPL, the GPL or the LGPL.
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2001-09-28 20:14:13 +00:00
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*
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* ***** END LICENSE BLOCK ***** */
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2006-03-29 18:29:03 +00:00
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/*
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* rendering object for the point that anchors out-of-flow rendering
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* objects such as floats and absolutely positioned elements
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*/
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1998-04-13 20:24:54 +00:00
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#include "nsPlaceholderFrame.h"
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1998-09-23 20:12:21 +00:00
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#include "nsLineLayout.h"
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#include "nsIContent.h"
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2004-07-31 23:15:21 +00:00
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#include "nsPresContext.h"
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1998-09-23 20:12:21 +00:00
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#include "nsIRenderingContext.h"
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2007-01-30 00:06:41 +00:00
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#include "nsGkAtoms.h"
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2005-03-23 03:35:08 +00:00
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#include "nsFrameManager.h"
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2006-01-26 02:29:17 +00:00
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#include "nsDisplayList.h"
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1998-04-13 20:24:54 +00:00
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2005-11-04 02:38:33 +00:00
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nsIFrame*
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2006-03-26 21:30:36 +00:00
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NS_NewPlaceholderFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
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2002-09-24 22:13:20 +00:00
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{
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2006-03-26 21:30:36 +00:00
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return new (aPresShell) nsPlaceholderFrame(aContext);
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2002-09-24 22:13:20 +00:00
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}
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2009-09-12 16:49:24 +00:00
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NS_IMPL_FRAMEARENA_HELPERS(nsPlaceholderFrame)
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2002-09-24 22:13:20 +00:00
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nsPlaceholderFrame::~nsPlaceholderFrame()
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{
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}
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Bug 300030: Move intrinsic width computation out of nsIFrame::Reflow and into its own methods on nsIFrame. Replace reflow reasons, types, and commands with dirty bits/notifications. Thanks to bzbarsky for almost all of the HTML form controls (mozilla/layout/forms) changes, and many others for help testing and patching. For detailed commit logs, see REFLOW_YYYYMMDD_BRANCH, where YYYYMMDD is one of 20061031, 20060830, 20060603, 20060302, 20060119, 20051011, 20050804, 20050429, 20050315, 20050111, and 20041213.
2006-12-08 05:38:33 +00:00
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/* virtual */ nscoord
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nsPlaceholderFrame::GetMinWidth(nsIRenderingContext *aRenderingContext)
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{
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nscoord result = 0;
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DISPLAY_MIN_WIDTH(this, result);
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return result;
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}
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/* virtual */ nscoord
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nsPlaceholderFrame::GetPrefWidth(nsIRenderingContext *aRenderingContext)
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{
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nscoord result = 0;
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DISPLAY_PREF_WIDTH(this, result);
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return result;
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}
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/* virtual */ void
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nsPlaceholderFrame::AddInlineMinWidth(nsIRenderingContext *aRenderingContext,
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nsIFrame::InlineMinWidthData *aData)
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{
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// Override AddInlineMinWith so that *nothing* happens. In
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// particular, we don't want to zero out |aData->trailingWhitespace|,
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// since nsLineLayout skips placeholders when trimming trailing
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// whitespace, and we don't want to set aData->skipWhitespace to
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// false.
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// ...but push floats onto the list
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if (mOutOfFlowFrame->GetStyleDisplay()->mFloats != NS_STYLE_FLOAT_NONE)
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aData->floats.AppendElement(mOutOfFlowFrame);
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}
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/* virtual */ void
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nsPlaceholderFrame::AddInlinePrefWidth(nsIRenderingContext *aRenderingContext,
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nsIFrame::InlinePrefWidthData *aData)
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{
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// Override AddInlinePrefWith so that *nothing* happens. In
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// particular, we don't want to zero out |aData->trailingWhitespace|,
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// since nsLineLayout skips placeholders when trimming trailing
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// whitespace, and we don't want to set aData->skipWhitespace to
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// false.
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// ...but push floats onto the list
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if (mOutOfFlowFrame->GetStyleDisplay()->mFloats != NS_STYLE_FLOAT_NONE)
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aData->floats.AppendElement(mOutOfFlowFrame);
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}
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1998-07-29 04:05:49 +00:00
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NS_IMETHODIMP
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2004-07-31 23:15:21 +00:00
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nsPlaceholderFrame::Reflow(nsPresContext* aPresContext,
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1998-10-03 04:28:05 +00:00
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus)
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1998-07-29 04:05:49 +00:00
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{
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Bug 300030: Move intrinsic width computation out of nsIFrame::Reflow and into its own methods on nsIFrame. Replace reflow reasons, types, and commands with dirty bits/notifications. Thanks to bzbarsky for almost all of the HTML form controls (mozilla/layout/forms) changes, and many others for help testing and patching. For detailed commit logs, see REFLOW_YYYYMMDD_BRANCH, where YYYYMMDD is one of 20061031, 20060830, 20060603, 20060302, 20060119, 20051011, 20050804, 20050429, 20050315, 20050111, and 20041213.
2006-12-08 05:38:33 +00:00
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DO_GLOBAL_REFLOW_COUNT("nsPlaceholderFrame");
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2001-11-14 13:40:03 +00:00
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DISPLAY_REFLOW(aPresContext, this, aReflowState, aDesiredSize, aStatus);
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1998-07-29 19:33:27 +00:00
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aDesiredSize.width = 0;
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aDesiredSize.height = 0;
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1998-10-03 04:28:05 +00:00
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aStatus = NS_FRAME_COMPLETE;
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2002-05-28 22:50:43 +00:00
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NS_FRAME_SET_TRUNCATION(aStatus, aReflowState, aDesiredSize);
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1998-10-03 04:28:05 +00:00
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return NS_OK;
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1998-07-16 23:31:53 +00:00
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}
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2006-04-10 00:16:29 +00:00
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void
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nsPlaceholderFrame::Destroy()
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2005-03-23 03:35:08 +00:00
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{
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2007-03-30 21:11:41 +00:00
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nsIPresShell* shell = PresContext()->GetPresShell();
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2005-03-23 03:35:08 +00:00
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if (shell && mOutOfFlowFrame) {
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2009-08-03 14:42:57 +00:00
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if (shell->FrameManager()->GetPlaceholderFrameFor(mOutOfFlowFrame)) {
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NS_ERROR("Placeholder relationship should have been torn down; see "
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"comments in nsPlaceholderFrame.h. Unregistering ourselves, "
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"but this might cause our out-of-flow to be unable to destroy "
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"itself properly. Not that it could anyway, with us dead.");
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shell->FrameManager()->UnregisterPlaceholderFrame(this);
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}
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2005-03-23 03:35:08 +00:00
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}
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2009-08-31 18:25:35 +00:00
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nsFrame::Destroy();
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2006-08-24 05:22:16 +00:00
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}
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2003-10-31 20:19:18 +00:00
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nsIAtom*
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nsPlaceholderFrame::GetType() const
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1999-11-01 22:12:45 +00:00
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{
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2006-12-26 17:47:52 +00:00
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return nsGkAtoms::placeholderFrame;
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1999-11-01 22:12:45 +00:00
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}
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Bug 300030: Move intrinsic width computation out of nsIFrame::Reflow and into its own methods on nsIFrame. Replace reflow reasons, types, and commands with dirty bits/notifications. Thanks to bzbarsky for almost all of the HTML form controls (mozilla/layout/forms) changes, and many others for help testing and patching. For detailed commit logs, see REFLOW_YYYYMMDD_BRANCH, where YYYYMMDD is one of 20061031, 20060830, 20060603, 20060302, 20060119, 20051011, 20050804, 20050429, 20050315, 20050111, and 20041213.
2006-12-08 05:38:33 +00:00
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/* virtual */ PRBool
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nsPlaceholderFrame::CanContinueTextRun() const
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2006-10-19 01:47:47 +00:00
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{
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if (!mOutOfFlowFrame) {
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Bug 300030: Move intrinsic width computation out of nsIFrame::Reflow and into its own methods on nsIFrame. Replace reflow reasons, types, and commands with dirty bits/notifications. Thanks to bzbarsky for almost all of the HTML form controls (mozilla/layout/forms) changes, and many others for help testing and patching. For detailed commit logs, see REFLOW_YYYYMMDD_BRANCH, where YYYYMMDD is one of 20061031, 20060830, 20060603, 20060302, 20060119, 20051011, 20050804, 20050429, 20050315, 20050111, and 20041213.
2006-12-08 05:38:33 +00:00
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return PR_FALSE;
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2006-10-19 01:47:47 +00:00
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}
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// first-letter frames can continue text runs, and placeholders for floated
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// first-letter frames can too
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Bug 300030: Move intrinsic width computation out of nsIFrame::Reflow and into its own methods on nsIFrame. Replace reflow reasons, types, and commands with dirty bits/notifications. Thanks to bzbarsky for almost all of the HTML form controls (mozilla/layout/forms) changes, and many others for help testing and patching. For detailed commit logs, see REFLOW_YYYYMMDD_BRANCH, where YYYYMMDD is one of 20061031, 20060830, 20060603, 20060302, 20060119, 20051011, 20050804, 20050429, 20050315, 20050111, and 20041213.
2006-12-08 05:38:33 +00:00
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return mOutOfFlowFrame->CanContinueTextRun();
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2006-10-19 01:47:47 +00:00
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}
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2007-07-18 02:01:32 +00:00
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NS_IMETHODIMP
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nsPlaceholderFrame::GetParentStyleContextFrame(nsPresContext* aPresContext,
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nsIFrame** aProviderFrame,
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PRBool* aIsChild)
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{
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NS_PRECONDITION(GetParent(), "How can we not have a parent here?");
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*aIsChild = PR_FALSE;
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// Lie about our pseudo so we can step out of all anon boxes and
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// pseudo-elements. The other option would be to reimplement the
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// {ib} split gunk here.
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*aProviderFrame =
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CorrectStyleParentFrame(GetParent(), nsGkAtoms::placeholderFrame);
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2007-07-18 02:43:12 +00:00
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return NS_OK;
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2007-07-18 02:01:32 +00:00
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}
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1999-11-01 22:12:45 +00:00
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#ifdef DEBUG
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2006-01-26 02:29:17 +00:00
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static void
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PaintDebugPlaceholder(nsIFrame* aFrame, nsIRenderingContext* aCtx,
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const nsRect& aDirtyRect, nsPoint aPt)
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{
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aCtx->SetColor(NS_RGB(0, 255, 255));
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2007-02-07 07:46:44 +00:00
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nscoord x = nsPresContext::CSSPixelsToAppUnits(-5);
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2006-01-26 02:29:17 +00:00
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aCtx->FillRect(aPt.x + x, aPt.y,
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2007-02-07 07:46:44 +00:00
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nsPresContext::CSSPixelsToAppUnits(13), nsPresContext::CSSPixelsToAppUnits(3));
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nscoord y = nsPresContext::CSSPixelsToAppUnits(-10);
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2006-01-26 02:29:17 +00:00
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aCtx->FillRect(aPt.x, aPt.y + y,
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2007-02-07 07:46:44 +00:00
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nsPresContext::CSSPixelsToAppUnits(3), nsPresContext::CSSPixelsToAppUnits(10));
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2006-01-26 02:29:17 +00:00
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}
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2006-09-19 04:26:20 +00:00
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#endif // DEBUG
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#if defined(DEBUG) || (defined(MOZ_REFLOW_PERF_DSP) && defined(MOZ_REFLOW_PERF))
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2006-01-26 02:29:17 +00:00
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1998-07-16 23:31:53 +00:00
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NS_IMETHODIMP
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2006-01-26 02:29:17 +00:00
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nsPlaceholderFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsRect& aDirtyRect,
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const nsDisplayListSet& aLists)
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1998-07-16 23:31:53 +00:00
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{
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2006-09-19 04:26:20 +00:00
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DO_GLOBAL_REFLOW_COUNT_DSP("nsPlaceholderFrame");
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#ifdef DEBUG
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2006-01-26 02:29:17 +00:00
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if (!GetShowFrameBorders())
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return NS_OK;
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return aLists.Outlines()->AppendNewToTop(new (aBuilder)
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nsDisplayGeneric(this, PaintDebugPlaceholder, "DebugPlaceholder"));
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2006-09-19 04:26:20 +00:00
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#else // DEBUG
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return NS_OK;
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#endif // DEBUG
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1998-04-13 20:24:54 +00:00
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}
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2006-09-19 04:26:20 +00:00
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#endif // DEBUG || (MOZ_REFLOW_PERF_DSP && MOZ_REFLOW_PERF)
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1998-04-13 20:24:54 +00:00
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2006-09-19 04:26:20 +00:00
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#ifdef DEBUG
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1998-11-14 19:26:57 +00:00
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NS_IMETHODIMP
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2001-11-14 01:33:42 +00:00
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nsPlaceholderFrame::GetFrameName(nsAString& aResult) const
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1998-04-13 20:24:54 +00:00
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{
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2001-11-14 01:33:42 +00:00
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return MakeFrameName(NS_LITERAL_STRING("Placeholder"), aResult);
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1998-04-13 20:24:54 +00:00
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}
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1999-05-03 20:54:24 +00:00
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NS_IMETHODIMP
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2005-09-06 21:34:50 +00:00
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nsPlaceholderFrame::List(FILE* out, PRInt32 aIndent) const
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1999-05-03 20:54:24 +00:00
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{
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IndentBy(out, aIndent);
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ListTag(out);
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2000-07-27 05:16:08 +00:00
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#ifdef DEBUG_waterson
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2007-07-08 07:08:04 +00:00
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fprintf(out, " [parent=%p]", static_cast<void*>(mParent));
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2000-07-27 05:16:08 +00:00
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#endif
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2003-06-19 23:44:01 +00:00
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if (HasView()) {
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2003-06-30 10:46:59 +00:00
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fprintf(out, " [view=%p]", (void*)GetView());
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1999-05-03 20:54:24 +00:00
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}
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fprintf(out, " {%d,%d,%d,%d}", mRect.x, mRect.y, mRect.width, mRect.height);
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if (0 != mState) {
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fprintf(out, " [state=%08x]", mState);
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}
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2005-03-23 03:35:08 +00:00
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nsIFrame* prevInFlow = GetPrevInFlow();
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nsIFrame* nextInFlow = GetNextInFlow();
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if (nsnull != prevInFlow) {
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2007-07-08 07:08:04 +00:00
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fprintf(out, " prev-in-flow=%p", static_cast<void*>(prevInFlow));
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2005-03-23 03:35:08 +00:00
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}
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if (nsnull != nextInFlow) {
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2007-07-08 07:08:04 +00:00
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fprintf(out, " next-in-flow=%p", static_cast<void*>(nextInFlow));
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2005-03-23 03:35:08 +00:00
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}
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1999-10-29 14:36:00 +00:00
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if (mOutOfFlowFrame) {
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fprintf(out, " outOfFlowFrame=");
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nsFrame::ListTag(out, mOutOfFlowFrame);
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}
|
1999-05-03 20:54:24 +00:00
|
|
|
fputs("\n", out);
|
|
|
|
return NS_OK;
|
|
|
|
}
|
1999-09-01 01:02:16 +00:00
|
|
|
#endif
|