зеркало из https://github.com/mozilla/pjs.git
141 строка
4.9 KiB
C++
141 строка
4.9 KiB
C++
/* -*- 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.org 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 ***** */
|
|
|
|
/* base class for rendering objects that do not have child lists */
|
|
|
|
#include "nsCOMPtr.h"
|
|
#include "nsLeafFrame.h"
|
|
#include "nsHTMLContainerFrame.h"
|
|
#include "nsHTMLParts.h"
|
|
#include "nsIPresShell.h"
|
|
#include "nsPresContext.h"
|
|
|
|
nsLeafFrame::~nsLeafFrame()
|
|
{
|
|
}
|
|
|
|
/* virtual */ nscoord
|
|
nsLeafFrame::GetMinWidth(nsIRenderingContext *aRenderingContext)
|
|
{
|
|
nscoord result;
|
|
DISPLAY_MIN_WIDTH(this, result);
|
|
|
|
result = GetIntrinsicWidth();
|
|
return result;
|
|
}
|
|
|
|
/* virtual */ nscoord
|
|
nsLeafFrame::GetPrefWidth(nsIRenderingContext *aRenderingContext)
|
|
{
|
|
nscoord result;
|
|
DISPLAY_PREF_WIDTH(this, result);
|
|
result = GetIntrinsicWidth();
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsLeafFrame::Reflow(nsPresContext* aPresContext,
|
|
nsHTMLReflowMetrics& aMetrics,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsReflowStatus& aStatus)
|
|
{
|
|
DO_GLOBAL_REFLOW_COUNT("nsLeafFrame");
|
|
NS_FRAME_TRACE(NS_FRAME_TRACE_CALLS,
|
|
("enter nsLeafFrame::Reflow: aMaxSize=%d,%d",
|
|
aReflowState.availableWidth, aReflowState.availableHeight));
|
|
|
|
NS_PRECONDITION(mState & NS_FRAME_IN_REFLOW, "frame is not in reflow");
|
|
|
|
// XXX add in code to check for width/height being set via css
|
|
// and if set use them instead of calling GetDesiredSize.
|
|
|
|
NS_ASSERTION(aReflowState.ComputedWidth() != NS_UNCONSTRAINEDSIZE,
|
|
"Shouldn't have unconstrained stuff here");
|
|
|
|
aMetrics.width = aReflowState.ComputedWidth();
|
|
if (NS_INTRINSICSIZE != aReflowState.ComputedHeight()) {
|
|
aMetrics.height = aReflowState.ComputedHeight();
|
|
} else {
|
|
aMetrics.height = GetIntrinsicHeight();
|
|
// XXXbz using NS_CSS_MINMAX like this presupposes content-box sizing.
|
|
aMetrics.height = NS_CSS_MINMAX(aMetrics.height,
|
|
aReflowState.mComputedMinHeight,
|
|
aReflowState.mComputedMaxHeight);
|
|
}
|
|
|
|
AddBordersAndPadding(aReflowState, aMetrics);
|
|
aStatus = NS_FRAME_COMPLETE;
|
|
|
|
NS_FRAME_TRACE(NS_FRAME_TRACE_CALLS,
|
|
("exit nsLeafFrame::Reflow: size=%d,%d",
|
|
aMetrics.width, aMetrics.height));
|
|
NS_FRAME_SET_TRUNCATION(aStatus, aReflowState, aMetrics);
|
|
|
|
aMetrics.mOverflowArea =
|
|
nsRect(0, 0, aMetrics.width, aMetrics.height);
|
|
FinishAndStoreOverflow(&aMetrics);
|
|
return NS_OK;
|
|
}
|
|
|
|
nscoord
|
|
nsLeafFrame::GetIntrinsicHeight()
|
|
{
|
|
NS_NOTREACHED("Someone didn't override Reflow");
|
|
return 0;
|
|
}
|
|
|
|
// XXX how should border&padding effect baseline alignment?
|
|
// => descent = borderPadding.bottom for example
|
|
void
|
|
nsLeafFrame::AddBordersAndPadding(const nsHTMLReflowState& aReflowState,
|
|
nsHTMLReflowMetrics& aMetrics)
|
|
{
|
|
aMetrics.width += aReflowState.mComputedBorderPadding.LeftRight();
|
|
aMetrics.height += aReflowState.mComputedBorderPadding.TopBottom();
|
|
}
|
|
|
|
void
|
|
nsLeafFrame::SizeToAvailSize(const nsHTMLReflowState& aReflowState,
|
|
nsHTMLReflowMetrics& aDesiredSize)
|
|
{
|
|
aDesiredSize.width = aReflowState.availableWidth; // FRAME
|
|
aDesiredSize.height = aReflowState.availableHeight;
|
|
aDesiredSize.mOverflowArea =
|
|
nsRect(0, 0, aDesiredSize.width, aDesiredSize.height);
|
|
FinishAndStoreOverflow(&aDesiredSize);
|
|
}
|