michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: /* base class for rendering objects that do not have child lists */
michael@0: 
michael@0: #include "nsLeafFrame.h"
michael@0: #include "nsPresContext.h"
michael@0: 
michael@0: nsLeafFrame::~nsLeafFrame()
michael@0: {
michael@0: }
michael@0: 
michael@0: NS_IMPL_FRAMEARENA_HELPERS(nsLeafFrame)
michael@0: 
michael@0: /* virtual */ nscoord
michael@0: nsLeafFrame::GetMinWidth(nsRenderingContext *aRenderingContext)
michael@0: {
michael@0:   nscoord result;
michael@0:   DISPLAY_MIN_WIDTH(this, result);
michael@0: 
michael@0:   result = GetIntrinsicWidth();
michael@0:   return result;
michael@0: }
michael@0: 
michael@0: /* virtual */ nscoord
michael@0: nsLeafFrame::GetPrefWidth(nsRenderingContext *aRenderingContext)
michael@0: {
michael@0:   nscoord result;
michael@0:   DISPLAY_PREF_WIDTH(this, result);
michael@0:   result = GetIntrinsicWidth();
michael@0:   return result;
michael@0: }
michael@0: 
michael@0: /* virtual */ nsSize
michael@0: nsLeafFrame::ComputeAutoSize(nsRenderingContext *aRenderingContext,
michael@0:                              nsSize aCBSize, nscoord aAvailableWidth,
michael@0:                              nsSize aMargin, nsSize aBorder,
michael@0:                              nsSize aPadding, bool aShrinkWrap)
michael@0: {
michael@0:   return nsSize(GetIntrinsicWidth(), GetIntrinsicHeight());
michael@0: }
michael@0: 
michael@0: nsresult
michael@0: nsLeafFrame::Reflow(nsPresContext* aPresContext,
michael@0:                     nsHTMLReflowMetrics& aMetrics,
michael@0:                     const nsHTMLReflowState& aReflowState,
michael@0:                     nsReflowStatus& aStatus)
michael@0: {
michael@0:   DO_GLOBAL_REFLOW_COUNT("nsLeafFrame");
michael@0:   NS_FRAME_TRACE(NS_FRAME_TRACE_CALLS,
michael@0:                  ("enter nsLeafFrame::Reflow: aMaxSize=%d,%d",
michael@0:                   aReflowState.AvailableWidth(), aReflowState.AvailableHeight()));
michael@0: 
michael@0:   NS_PRECONDITION(mState & NS_FRAME_IN_REFLOW, "frame is not in reflow");
michael@0: 
michael@0:   DoReflow(aPresContext, aMetrics, aReflowState, aStatus);
michael@0: 
michael@0:   FinishAndStoreOverflow(&aMetrics);
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: nsresult
michael@0: nsLeafFrame::DoReflow(nsPresContext* aPresContext,
michael@0:                       nsHTMLReflowMetrics& aMetrics,
michael@0:                       const nsHTMLReflowState& aReflowState,
michael@0:                       nsReflowStatus& aStatus)
michael@0: {
michael@0:   NS_ASSERTION(aReflowState.ComputedWidth() != NS_UNCONSTRAINEDSIZE,
michael@0:                "Shouldn't have unconstrained stuff here "
michael@0:                "Thanks to the rules of reflow");
michael@0:   NS_ASSERTION(NS_INTRINSICSIZE != aReflowState.ComputedHeight(),
michael@0:                "Shouldn't have unconstrained stuff here "
michael@0:                "thanks to ComputeAutoSize");  
michael@0: 
michael@0:   aMetrics.Width() = aReflowState.ComputedWidth();
michael@0:   aMetrics.Height() = aReflowState.ComputedHeight();
michael@0:   
michael@0:   AddBordersAndPadding(aReflowState, aMetrics);
michael@0:   aStatus = NS_FRAME_COMPLETE;
michael@0: 
michael@0:   NS_FRAME_TRACE(NS_FRAME_TRACE_CALLS,
michael@0:                  ("exit nsLeafFrame::DoReflow: size=%d,%d",
michael@0:                   aMetrics.Width(), aMetrics.Height()));
michael@0:   NS_FRAME_SET_TRUNCATION(aStatus, aReflowState, aMetrics);
michael@0: 
michael@0:   aMetrics.SetOverflowAreasToDesiredBounds();
michael@0: 
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: nscoord
michael@0: nsLeafFrame::GetIntrinsicHeight()
michael@0: {
michael@0:   NS_NOTREACHED("Someone didn't override Reflow or ComputeAutoSize");
michael@0:   return 0;
michael@0: }
michael@0: 
michael@0: // XXX how should border&padding effect baseline alignment?
michael@0: // => descent = borderPadding.bottom for example
michael@0: void
michael@0: nsLeafFrame::AddBordersAndPadding(const nsHTMLReflowState& aReflowState,
michael@0:                                   nsHTMLReflowMetrics& aMetrics)
michael@0: {
michael@0:   aMetrics.Width() += aReflowState.ComputedPhysicalBorderPadding().LeftRight();
michael@0:   aMetrics.Height() += aReflowState.ComputedPhysicalBorderPadding().TopBottom();
michael@0: }
michael@0: 
michael@0: void
michael@0: nsLeafFrame::SizeToAvailSize(const nsHTMLReflowState& aReflowState,
michael@0:                              nsHTMLReflowMetrics& aDesiredSize)
michael@0: {
michael@0:   aDesiredSize.Width() = aReflowState.AvailableWidth(); // FRAME
michael@0:   aDesiredSize.Height() = aReflowState.AvailableHeight();
michael@0:   aDesiredSize.SetOverflowAreasToDesiredBounds();
michael@0:   FinishAndStoreOverflow(&aDesiredSize);  
michael@0: }