1 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 : /* ***** BEGIN LICENSE BLOCK *****
3 : * Version: MPL 1.1/GPL 2.0/LGPL 2.1
4 : *
5 : * The contents of this file are subject to the Mozilla Public License Version
6 : * 1.1 (the "License"); you may not use this file except in compliance with
7 : * the License. You may obtain a copy of the License at
8 : * http://www.mozilla.org/MPL/
9 : *
10 : * Software distributed under the License is distributed on an "AS IS" basis,
11 : * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12 : * for the specific language governing rights and limitations under the
13 : * License.
14 : *
15 : * The Original Code is mozilla.org code.
16 : *
17 : * The Initial Developer of the Original Code is
18 : * Netscape Communications Corporation.
19 : * Portions created by the Initial Developer are Copyright (C) 1998
20 : * the Initial Developer. All Rights Reserved.
21 : *
22 : * Contributor(s):
23 : *
24 : * Alternatively, the contents of this file may be used under the terms of
25 : * either of the GNU General Public License Version 2 or later (the "GPL"),
26 : * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
27 : * in which case the provisions of the GPL or the LGPL are applicable instead
28 : * of those above. If you wish to allow use of your version of this file only
29 : * under the terms of either the GPL or the LGPL, and not to allow others to
30 : * use your version of this file under the terms of the MPL, indicate your
31 : * decision by deleting the provisions above and replace them with the notice
32 : * and other provisions required by the GPL or the LGPL. If you do not delete
33 : * the provisions above, a recipient may use your version of this file under
34 : * the terms of any one of the MPL, the GPL or the LGPL.
35 : *
36 : * ***** END LICENSE BLOCK ***** */
37 :
38 : /* base class for rendering objects that do not have child lists */
39 :
40 : #include "nsCOMPtr.h"
41 : #include "nsLeafFrame.h"
42 : #include "nsContainerFrame.h"
43 : #include "nsHTMLParts.h"
44 : #include "nsPresContext.h"
45 :
46 0 : nsLeafFrame::~nsLeafFrame()
47 : {
48 0 : }
49 :
50 0 : NS_IMPL_FRAMEARENA_HELPERS(nsLeafFrame)
51 :
52 : /* virtual */ nscoord
53 0 : nsLeafFrame::GetMinWidth(nsRenderingContext *aRenderingContext)
54 : {
55 : nscoord result;
56 0 : DISPLAY_MIN_WIDTH(this, result);
57 :
58 0 : result = GetIntrinsicWidth();
59 0 : return result;
60 : }
61 :
62 : /* virtual */ nscoord
63 0 : nsLeafFrame::GetPrefWidth(nsRenderingContext *aRenderingContext)
64 : {
65 : nscoord result;
66 0 : DISPLAY_PREF_WIDTH(this, result);
67 0 : result = GetIntrinsicWidth();
68 0 : return result;
69 : }
70 :
71 : /* virtual */ nsSize
72 0 : nsLeafFrame::ComputeAutoSize(nsRenderingContext *aRenderingContext,
73 : nsSize aCBSize, nscoord aAvailableWidth,
74 : nsSize aMargin, nsSize aBorder,
75 : nsSize aPadding, bool aShrinkWrap)
76 : {
77 0 : return nsSize(GetIntrinsicWidth(), GetIntrinsicHeight());
78 : }
79 :
80 : NS_IMETHODIMP
81 0 : nsLeafFrame::Reflow(nsPresContext* aPresContext,
82 : nsHTMLReflowMetrics& aMetrics,
83 : const nsHTMLReflowState& aReflowState,
84 : nsReflowStatus& aStatus)
85 : {
86 0 : DO_GLOBAL_REFLOW_COUNT("nsLeafFrame");
87 0 : NS_FRAME_TRACE(NS_FRAME_TRACE_CALLS,
88 : ("enter nsLeafFrame::Reflow: aMaxSize=%d,%d",
89 : aReflowState.availableWidth, aReflowState.availableHeight));
90 :
91 0 : NS_PRECONDITION(mState & NS_FRAME_IN_REFLOW, "frame is not in reflow");
92 :
93 0 : DoReflow(aPresContext, aMetrics, aReflowState, aStatus);
94 :
95 0 : FinishAndStoreOverflow(&aMetrics);
96 0 : return NS_OK;
97 : }
98 :
99 : NS_IMETHODIMP
100 0 : nsLeafFrame::DoReflow(nsPresContext* aPresContext,
101 : nsHTMLReflowMetrics& aMetrics,
102 : const nsHTMLReflowState& aReflowState,
103 : nsReflowStatus& aStatus)
104 : {
105 0 : NS_ASSERTION(aReflowState.ComputedWidth() != NS_UNCONSTRAINEDSIZE,
106 : "Shouldn't have unconstrained stuff here "
107 : "Thanks to the rules of reflow");
108 0 : NS_ASSERTION(NS_INTRINSICSIZE != aReflowState.ComputedHeight(),
109 : "Shouldn't have unconstrained stuff here "
110 : "thanks to ComputeAutoSize");
111 :
112 0 : aMetrics.width = aReflowState.ComputedWidth();
113 0 : aMetrics.height = aReflowState.ComputedHeight();
114 :
115 0 : AddBordersAndPadding(aReflowState, aMetrics);
116 0 : aStatus = NS_FRAME_COMPLETE;
117 :
118 0 : NS_FRAME_TRACE(NS_FRAME_TRACE_CALLS,
119 : ("exit nsLeafFrame::DoReflow: size=%d,%d",
120 : aMetrics.width, aMetrics.height));
121 0 : NS_FRAME_SET_TRUNCATION(aStatus, aReflowState, aMetrics);
122 :
123 0 : aMetrics.SetOverflowAreasToDesiredBounds();
124 :
125 0 : return NS_OK;
126 : }
127 :
128 : nscoord
129 0 : nsLeafFrame::GetIntrinsicHeight()
130 : {
131 0 : NS_NOTREACHED("Someone didn't override Reflow or ComputeAutoSize");
132 0 : return 0;
133 : }
134 :
135 : // XXX how should border&padding effect baseline alignment?
136 : // => descent = borderPadding.bottom for example
137 : void
138 0 : nsLeafFrame::AddBordersAndPadding(const nsHTMLReflowState& aReflowState,
139 : nsHTMLReflowMetrics& aMetrics)
140 : {
141 0 : aMetrics.width += aReflowState.mComputedBorderPadding.LeftRight();
142 0 : aMetrics.height += aReflowState.mComputedBorderPadding.TopBottom();
143 0 : }
144 :
145 : void
146 0 : nsLeafFrame::SizeToAvailSize(const nsHTMLReflowState& aReflowState,
147 : nsHTMLReflowMetrics& aDesiredSize)
148 : {
149 0 : aDesiredSize.width = aReflowState.availableWidth; // FRAME
150 0 : aDesiredSize.height = aReflowState.availableHeight;
151 0 : aDesiredSize.SetOverflowAreasToDesiredBounds();
152 0 : FinishAndStoreOverflow(&aDesiredSize);
153 0 : }
|