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layout/generic/nsLeafFrame.cpp@b8a032363ba2 (annotated)

layout/generic/nsLeafFrame.cpp

Thu, 22 Jan 2015 13:21:57 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Thu, 22 Jan 2015 13:21:57 +0100

branch

TOR_BUG_9701

changeset 15

b8a032363ba2

permissions

-rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

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