The Tor Browser / file comparison
comparison: layout/generic/nsLeafFrame.cpp
layout/generic/nsLeafFrame.cpp
- changeset 0
- 6474c204b198
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| -1:000000000000 | 0:8960b69f0699 |
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| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 /* base class for rendering objects that do not have child lists */ | |
| 7 | |
| 8 #include "nsLeafFrame.h" | |
| 9 #include "nsPresContext.h" | |
| 10 | |
| 11 nsLeafFrame::~nsLeafFrame() | |
| 12 { | |
| 13 } | |
| 14 | |
| 15 NS_IMPL_FRAMEARENA_HELPERS(nsLeafFrame) | |
| 16 | |
| 17 /* virtual */ nscoord | |
| 18 nsLeafFrame::GetMinWidth(nsRenderingContext *aRenderingContext) | |
| 19 { | |
| 20 nscoord result; | |
| 21 DISPLAY_MIN_WIDTH(this, result); | |
| 22 | |
| 23 result = GetIntrinsicWidth(); | |
| 24 return result; | |
| 25 } | |
| 26 | |
| 27 /* virtual */ nscoord | |
| 28 nsLeafFrame::GetPrefWidth(nsRenderingContext *aRenderingContext) | |
| 29 { | |
| 30 nscoord result; | |
| 31 DISPLAY_PREF_WIDTH(this, result); | |
| 32 result = GetIntrinsicWidth(); | |
| 33 return result; | |
| 34 } | |
| 35 | |
| 36 /* virtual */ nsSize | |
| 37 nsLeafFrame::ComputeAutoSize(nsRenderingContext *aRenderingContext, | |
| 38 nsSize aCBSize, nscoord aAvailableWidth, | |
| 39 nsSize aMargin, nsSize aBorder, | |
| 40 nsSize aPadding, bool aShrinkWrap) | |
| 41 { | |
| 42 return nsSize(GetIntrinsicWidth(), GetIntrinsicHeight()); | |
| 43 } | |
| 44 | |
| 45 nsresult | |
| 46 nsLeafFrame::Reflow(nsPresContext* aPresContext, | |
| 47 nsHTMLReflowMetrics& aMetrics, | |
| 48 const nsHTMLReflowState& aReflowState, | |
| 49 nsReflowStatus& aStatus) | |
| 50 { | |
| 51 DO_GLOBAL_REFLOW_COUNT("nsLeafFrame"); | |
| 52 NS_FRAME_TRACE(NS_FRAME_TRACE_CALLS, | |
| 53 ("enter nsLeafFrame::Reflow: aMaxSize=%d,%d", | |
| 54 aReflowState.AvailableWidth(), aReflowState.AvailableHeight())); | |
| 55 | |
| 56 NS_PRECONDITION(mState & NS_FRAME_IN_REFLOW, "frame is not in reflow"); | |
| 57 | |
| 58 DoReflow(aPresContext, aMetrics, aReflowState, aStatus); | |
| 59 | |
| 60 FinishAndStoreOverflow(&aMetrics); | |
| 61 return NS_OK; | |
| 62 } | |
| 63 | |
| 64 nsresult | |
| 65 nsLeafFrame::DoReflow(nsPresContext* aPresContext, | |
| 66 nsHTMLReflowMetrics& aMetrics, | |
| 67 const nsHTMLReflowState& aReflowState, | |
| 68 nsReflowStatus& aStatus) | |
| 69 { | |
| 70 NS_ASSERTION(aReflowState.ComputedWidth() != NS_UNCONSTRAINEDSIZE, | |
| 71 "Shouldn't have unconstrained stuff here " | |
| 72 "Thanks to the rules of reflow"); | |
| 73 NS_ASSERTION(NS_INTRINSICSIZE != aReflowState.ComputedHeight(), | |
| 74 "Shouldn't have unconstrained stuff here " | |
| 75 "thanks to ComputeAutoSize"); | |
| 76 | |
| 77 aMetrics.Width() = aReflowState.ComputedWidth(); | |
| 78 aMetrics.Height() = aReflowState.ComputedHeight(); | |
| 79 | |
| 80 AddBordersAndPadding(aReflowState, aMetrics); | |
| 81 aStatus = NS_FRAME_COMPLETE; | |
| 82 | |
| 83 NS_FRAME_TRACE(NS_FRAME_TRACE_CALLS, | |
| 84 ("exit nsLeafFrame::DoReflow: size=%d,%d", | |
| 85 aMetrics.Width(), aMetrics.Height())); | |
| 86 NS_FRAME_SET_TRUNCATION(aStatus, aReflowState, aMetrics); | |
| 87 | |
| 88 aMetrics.SetOverflowAreasToDesiredBounds(); | |
| 89 | |
| 90 return NS_OK; | |
| 91 } | |
| 92 | |
| 93 nscoord | |
| 94 nsLeafFrame::GetIntrinsicHeight() | |
| 95 { | |
| 96 NS_NOTREACHED("Someone didn't override Reflow or ComputeAutoSize"); | |
| 97 return 0; | |
| 98 } | |
| 99 | |
| 100 // XXX how should border&padding effect baseline alignment? | |
| 101 // => descent = borderPadding.bottom for example | |
| 102 void | |
| 103 nsLeafFrame::AddBordersAndPadding(const nsHTMLReflowState& aReflowState, | |
| 104 nsHTMLReflowMetrics& aMetrics) | |
| 105 { | |
| 106 aMetrics.Width() += aReflowState.ComputedPhysicalBorderPadding().LeftRight(); | |
| 107 aMetrics.Height() += aReflowState.ComputedPhysicalBorderPadding().TopBottom(); | |
| 108 } | |
| 109 | |
| 110 void | |
| 111 nsLeafFrame::SizeToAvailSize(const nsHTMLReflowState& aReflowState, | |
| 112 nsHTMLReflowMetrics& aDesiredSize) | |
| 113 { | |
| 114 aDesiredSize.Width() = aReflowState.AvailableWidth(); // FRAME | |
| 115 aDesiredSize.Height() = aReflowState.AvailableHeight(); | |
| 116 aDesiredSize.SetOverflowAreasToDesiredBounds(); | |
| 117 FinishAndStoreOverflow(&aDesiredSize); | |
| 118 } |
