gecko-dev/layout/base/nsLayoutDebugger.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla 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/MPL/
*
* 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 of 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 MPL, 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 MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
/*
* implementation of interface that allows layout-debug extension access
* to some internals of layout
*/
#include "nsILayoutDebugger.h"
#include "nsIFrame.h"
#include "nsIFrameDebug.h"
#include "nsDisplayList.h"
#include <stdio.h>
#ifdef NS_DEBUG
class nsLayoutDebugger : public nsILayoutDebugger {
public:
nsLayoutDebugger();
virtual ~nsLayoutDebugger();
NS_DECL_ISUPPORTS
NS_IMETHOD SetShowFrameBorders(PRBool aEnable);
NS_IMETHOD GetShowFrameBorders(PRBool* aResult);
NS_IMETHOD SetShowEventTargetFrameBorder(PRBool aEnable);
NS_IMETHOD GetShowEventTargetFrameBorder(PRBool* aResult);
NS_IMETHOD GetContentSize(nsIDocument* aDocument,
PRInt32* aSizeInBytesResult);
NS_IMETHOD GetFrameSize(nsIPresShell* aPresentation,
PRInt32* aSizeInBytesResult);
NS_IMETHOD GetStyleSize(nsIPresShell* aPresentation,
PRInt32* aSizeInBytesResult);
};
nsresult
NS_NewLayoutDebugger(nsILayoutDebugger** aResult)
{
NS_PRECONDITION(aResult, "null OUT ptr");
if (!aResult) {
return NS_ERROR_NULL_POINTER;
}
nsLayoutDebugger* it = new nsLayoutDebugger();
if (!it) {
return NS_ERROR_OUT_OF_MEMORY;
}
return it->QueryInterface(NS_GET_IID(nsILayoutDebugger), (void**)aResult);
}
nsLayoutDebugger::nsLayoutDebugger()
{
}
nsLayoutDebugger::~nsLayoutDebugger()
{
}
NS_IMPL_ISUPPORTS1(nsLayoutDebugger, nsILayoutDebugger)
NS_IMETHODIMP
nsLayoutDebugger::SetShowFrameBorders(PRBool aEnable)
{
nsIFrameDebug::ShowFrameBorders(aEnable);
return NS_OK;
}
NS_IMETHODIMP
nsLayoutDebugger::GetShowFrameBorders(PRBool* aResult)
{
*aResult = nsIFrameDebug::GetShowFrameBorders();
return NS_OK;
}
NS_IMETHODIMP
nsLayoutDebugger::SetShowEventTargetFrameBorder(PRBool aEnable)
{
nsIFrameDebug::ShowEventTargetFrameBorder(aEnable);
return NS_OK;
}
NS_IMETHODIMP
nsLayoutDebugger::GetShowEventTargetFrameBorder(PRBool* aResult)
{
*aResult = nsIFrameDebug::GetShowEventTargetFrameBorder();
return NS_OK;
}
NS_IMETHODIMP
nsLayoutDebugger::GetContentSize(nsIDocument* aDocument,
PRInt32* aSizeInBytesResult)
{
*aSizeInBytesResult = 0;
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsLayoutDebugger::GetFrameSize(nsIPresShell* aPresentation,
PRInt32* aSizeInBytesResult)
{
*aSizeInBytesResult = 0;
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsLayoutDebugger::GetStyleSize(nsIPresShell* aPresentation,
PRInt32* aSizeInBytesResult)
{
*aSizeInBytesResult = 0;
return NS_ERROR_FAILURE;
}
static void
PrintDisplayListTo(nsDisplayListBuilder* aBuilder, const nsDisplayList& aList,
PRInt32 aIndent, FILE* aOutput)
{
for (nsDisplayItem* i = aList.GetBottom(); i != nsnull; i = i->GetAbove()) {
for (PRInt32 j = 0; j < aIndent; ++j) {
fputc(' ', aOutput);
}
nsIFrame* f = i->GetUnderlyingFrame();
nsIFrameDebug* fDebug = nsnull;
if (f) {
CallQueryInterface(f, &fDebug);
}
nsAutoString fName;
if (fDebug) {
fDebug->GetFrameName(fName);
}
nsRect rect = i->GetBounds(aBuilder);
switch (i->GetType()) {
case nsDisplayItem::TYPE_CLIP: {
nsDisplayClip* c = static_cast<nsDisplayClip*>(i);
rect = c->GetClipRect();
break;
}
default:
break;
}
fprintf(aOutput, "%s %p(%s) (%d,%d,%d,%d)%s%s\n", i->Name(),
(void*)f, NS_ConvertUTF16toUTF8(fName).get(),
rect.x, rect.y, rect.width, rect.height,
i->IsOpaque(aBuilder) ? " opaque" : "",
i->IsUniform(aBuilder) ? " uniform" : "");
nsDisplayList* list = i->GetList();
if (list) {
PrintDisplayListTo(aBuilder, *list, aIndent + 4, aOutput);
}
}
}
void
nsIFrameDebug::PrintDisplayList(nsDisplayListBuilder* aBuilder, const nsDisplayList& aList)
{
PrintDisplayListTo(aBuilder, aList, 0, stderr);
}
#endif