gecko-dev/layout/generic/nsLeafFrame.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
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* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
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* Contributor(s):
*
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#include "nsCOMPtr.h"
#include "nsLeafFrame.h"
#include "nsHTMLContainerFrame.h"
#include "nsCSSRendering.h"
#include "nsHTMLParts.h"
#include "nsHTMLAtoms.h"
#include "nsIPresShell.h"
#include "nsIPresContext.h"
#include "nsIStyleContext.h"
nsLeafFrame::~nsLeafFrame()
{
}
NS_IMETHODIMP
nsLeafFrame::Paint(nsIPresContext* aPresContext,
nsIRenderingContext& aRenderingContext,
const nsRect& aDirtyRect,
nsFramePaintLayer aWhichLayer,
PRUint32 aFlags)
{
if (NS_FRAME_PAINT_LAYER_BACKGROUND == aWhichLayer) {
PRBool isVisible;
if (NS_SUCCEEDED(IsVisibleForPainting(aPresContext, aRenderingContext, PR_FALSE, &isVisible)) &&
!isVisible) {// just checks selection painting
return NS_OK; // not visibility
}
const nsStyleVisibility* vis =
(const nsStyleVisibility*)mStyleContext->GetStyleData(eStyleStruct_Visibility);
if (vis->IsVisibleOrCollapsed()) {
const nsStyleBorder* myBorder = (const nsStyleBorder*)
mStyleContext->GetStyleData(eStyleStruct_Border);
const nsStyleOutline* myOutline = (const nsStyleOutline*)
mStyleContext->GetStyleData(eStyleStruct_Outline);
nsRect rect(0, 0, mRect.width, mRect.height);
nsCSSRendering::PaintBackground(aPresContext, aRenderingContext, this,
aDirtyRect, rect, *myBorder, 0, 0);
nsCSSRendering::PaintBorder(aPresContext, aRenderingContext, this,
aDirtyRect, rect, *myBorder,
mStyleContext, 0);
nsCSSRendering::PaintOutline(aPresContext, aRenderingContext, this,
aDirtyRect, rect, *myBorder,
*myOutline, mStyleContext, 0);
}
}
DO_GLOBAL_REFLOW_COUNT_DSP("nsLeafFrame", &aRenderingContext);
return NS_OK;
}
NS_IMETHODIMP
nsLeafFrame::Reflow(nsIPresContext* aPresContext,
nsHTMLReflowMetrics& aMetrics,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
{
DO_GLOBAL_REFLOW_COUNT("nsLeafFrame", aReflowState.reason);
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.
GetDesiredSize(aPresContext, aReflowState, aMetrics);
nsMargin borderPadding;
AddBordersAndPadding(aPresContext, aReflowState, aMetrics, borderPadding);
if (nsnull != aMetrics.maxElementSize) {
aMetrics.AddBorderPaddingToMaxElementSize(borderPadding);
aMetrics.maxElementSize->width = aMetrics.width;
aMetrics.maxElementSize->height = aMetrics.height;
}
aStatus = NS_FRAME_COMPLETE;
NS_FRAME_TRACE(NS_FRAME_TRACE_CALLS,
("exit nsLeafFrame::Reflow: size=%d,%d",
aMetrics.width, aMetrics.height));
return NS_OK;
}
// XXX how should border&padding effect baseline alignment?
// => descent = borderPadding.bottom for example
void
nsLeafFrame::AddBordersAndPadding(nsIPresContext* aPresContext,
const nsHTMLReflowState& aReflowState,
nsHTMLReflowMetrics& aMetrics,
nsMargin& aBorderPadding)
{
aBorderPadding = aReflowState.mComputedBorderPadding;
aMetrics.width += aBorderPadding.left + aBorderPadding.right;
aMetrics.height += aBorderPadding.top + aBorderPadding.bottom;
aMetrics.ascent = aMetrics.height;
aMetrics.descent = 0;
}
NS_IMETHODIMP
nsLeafFrame::ContentChanged(nsIPresContext* aPresContext,
nsIContent* aChild,
nsISupports* aSubContent)
{
/*
// Generate a reflow command with this frame as the target frame
nsHTMLReflowCommand* cmd;
nsresult rv;
rv = NS_NewHTMLReflowCommand(&cmd, this, eReflowType_ContentChanged);
if (NS_SUCCEEDED(rv)) {
nsCOMPtr<nsIPresShell> shell;
rv = aPresContext->GetShell(getter_AddRefs(shell));
if (NS_SUCCEEDED(rv) && shell) {
shell->AppendReflowCommand(cmd);
}
NS_RELEASE(cmd);
}
return rv;
*/
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
mState |= NS_FRAME_IS_DIRTY;
return mParent->ReflowDirtyChild(shell, this);
}
#ifdef DEBUG
NS_IMETHODIMP
nsLeafFrame::SizeOf(nsISizeOfHandler* aHandler,
PRUint32* aResult) const
{
if (!aResult) {
return NS_ERROR_NULL_POINTER;
}
*aResult = sizeof(*this);
return NS_OK;
}
#endif