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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/* base class for rendering objects that do not have child lists */
#include "nsCOMPtr.h"
#include "nsLeafFrame.h"
#include "nsContainerFrame.h"
#include "nsHTMLParts.h"
#include "nsPresContext.h"
nsLeafFrame::~nsLeafFrame()
{
}
NS_IMPL_FRAMEARENA_HELPERS(nsLeafFrame)
/* virtual */ nscoord
nsLeafFrame::GetMinWidth(nsRenderingContext *aRenderingContext)
{
nscoord result;
DISPLAY_MIN_WIDTH(this, result);
result = GetIntrinsicWidth();
return result;
}
/* virtual */ nscoord
nsLeafFrame::GetPrefWidth(nsRenderingContext *aRenderingContext)
{
nscoord result;
DISPLAY_PREF_WIDTH(this, result);
result = GetIntrinsicWidth();
return result;
}
/* virtual */ nsSize
nsLeafFrame::ComputeAutoSize(nsRenderingContext *aRenderingContext,
nsSize aCBSize, nscoord aAvailableWidth,
nsSize aMargin, nsSize aBorder,
nsSize aPadding, bool aShrinkWrap)
{
return nsSize(GetIntrinsicWidth(), GetIntrinsicHeight());
}
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");
DoReflow(aPresContext, aMetrics, aReflowState, aStatus);
FinishAndStoreOverflow(&aMetrics);
return NS_OK;
}
NS_IMETHODIMP
nsLeafFrame::DoReflow(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aMetrics,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
{
NS_ASSERTION(aReflowState.ComputedWidth() != NS_UNCONSTRAINEDSIZE,
"Shouldn't have unconstrained stuff here "
"Thanks to the rules of reflow");
NS_ASSERTION(NS_INTRINSICSIZE != aReflowState.ComputedHeight(),
"Shouldn't have unconstrained stuff here "
"thanks to ComputeAutoSize");
aMetrics.width = aReflowState.ComputedWidth();
aMetrics.height = aReflowState.ComputedHeight();
AddBordersAndPadding(aReflowState, aMetrics);
aStatus = NS_FRAME_COMPLETE;
NS_FRAME_TRACE(NS_FRAME_TRACE_CALLS,
("exit nsLeafFrame::DoReflow: size=%d,%d",
aMetrics.width, aMetrics.height));
NS_FRAME_SET_TRUNCATION(aStatus, aReflowState, aMetrics);
aMetrics.SetOverflowAreasToDesiredBounds();
return NS_OK;
}
nscoord
nsLeafFrame::GetIntrinsicHeight()
{
NS_NOTREACHED("Someone didn't override Reflow or ComputeAutoSize");
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.SetOverflowAreasToDesiredBounds();
FinishAndStoreOverflow(&aDesiredSize);
}
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