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 MathML Project.
16 : *
17 : * The Initial Developer of the Original Code is
18 : * The University Of Queensland.
19 : * Portions created by the Initial Developer are Copyright (C) 1999
20 : * the Initial Developer. All Rights Reserved.
21 : *
22 : * Contributor(s):
23 : * Roger B. Sidje <rbs@maths.uq.edu.au>
24 : *
25 : * Alternatively, the contents of this file may be used under the terms of
26 : * either of the GNU General Public License Version 2 or later (the "GPL"),
27 : * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
28 : * in which case the provisions of the GPL or the LGPL are applicable instead
29 : * of those above. If you wish to allow use of your version of this file only
30 : * under the terms of either the GPL or the LGPL, and not to allow others to
31 : * use your version of this file under the terms of the MPL, indicate your
32 : * decision by deleting the provisions above and replace them with the notice
33 : * and other provisions required by the GPL or the LGPL. If you do not delete
34 : * the provisions above, a recipient may use your version of this file under
35 : * the terms of any one of the MPL, the GPL or the LGPL.
36 : *
37 : * ***** END LICENSE BLOCK ***** */
38 :
39 : //
40 : // a helper frame class to wrap non-MathML frames so that foreign elements
41 : // (e.g., html:img) can mix better with other surrounding MathML markups
42 : //
43 :
44 : #include "nsCOMPtr.h"
45 : #include "nsHTMLParts.h"
46 : #include "nsFrame.h"
47 : #include "nsBlockFrame.h"
48 : #include "nsLineLayout.h"
49 : #include "nsPresContext.h"
50 : #include "nsStyleContext.h"
51 : #include "nsStyleConsts.h"
52 :
53 : #include "nsMathMLForeignFrameWrapper.h"
54 :
55 0 : NS_QUERYFRAME_HEAD(nsMathMLForeignFrameWrapper)
56 0 : NS_QUERYFRAME_ENTRY(nsMathMLFrame)
57 0 : NS_QUERYFRAME_TAIL_INHERITING(nsBlockFrame)
58 :
59 : nsIFrame*
60 0 : NS_NewMathMLForeignFrameWrapper(nsIPresShell* aPresShell, nsStyleContext* aContext)
61 : {
62 0 : return new (aPresShell) nsMathMLForeignFrameWrapper(aContext);
63 : }
64 :
65 0 : NS_IMPL_FRAMEARENA_HELPERS(nsMathMLForeignFrameWrapper)
66 :
67 : NS_IMETHODIMP
68 0 : nsMathMLForeignFrameWrapper::Reflow(nsPresContext* aPresContext,
69 : nsHTMLReflowMetrics& aDesiredSize,
70 : const nsHTMLReflowState& aReflowState,
71 : nsReflowStatus& aStatus)
72 : {
73 : // Let the base class do the reflow
74 0 : nsresult rv = nsBlockFrame::Reflow(aPresContext, aDesiredSize, aReflowState, aStatus);
75 :
76 0 : mReference.x = 0;
77 0 : mReference.y = aDesiredSize.ascent;
78 :
79 : // just make-up a bounding metrics
80 0 : mBoundingMetrics = nsBoundingMetrics();
81 0 : mBoundingMetrics.ascent = aDesiredSize.ascent;
82 0 : mBoundingMetrics.descent = aDesiredSize.height - aDesiredSize.ascent;
83 0 : mBoundingMetrics.width = aDesiredSize.width;
84 0 : mBoundingMetrics.leftBearing = 0;
85 0 : mBoundingMetrics.rightBearing = aDesiredSize.width;
86 0 : aDesiredSize.mBoundingMetrics = mBoundingMetrics;
87 :
88 0 : NS_FRAME_SET_TRUNCATION(aStatus, aReflowState, aDesiredSize);
89 0 : return rv;
90 : }
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