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 : * David J. Fiddes <D.J.Fiddes@hw.ac.uk>
25 : * Shyjan Mahamud <mahamud@cs.cmu.edu>
26 : *
27 : * Alternatively, the contents of this file may be used under the terms of
28 : * either of the GNU General Public License Version 2 or later (the "GPL"),
29 : * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
30 : * in which case the provisions of the GPL or the LGPL are applicable instead
31 : * of those above. If you wish to allow use of your version of this file only
32 : * under the terms of either the GPL or the LGPL, and not to allow others to
33 : * use your version of this file under the terms of the MPL, indicate your
34 : * decision by deleting the provisions above and replace them with the notice
35 : * and other provisions required by the GPL or the LGPL. If you do not delete
36 : * the provisions above, a recipient may use your version of this file under
37 : * the terms of any one of the MPL, the GPL or the LGPL.
38 : *
39 : * ***** END LICENSE BLOCK ***** */
40 :
41 : #ifndef nsMathMLmoFrame_h___
42 : #define nsMathMLmoFrame_h___
43 :
44 : #include "nsCOMPtr.h"
45 : #include "nsMathMLTokenFrame.h"
46 :
47 : //
48 : // <mo> -- operator, fence, or separator
49 : //
50 :
51 : class nsMathMLmoFrame : public nsMathMLTokenFrame {
52 : public:
53 : NS_DECL_FRAMEARENA_HELPERS
54 :
55 : friend nsIFrame* NS_NewMathMLmoFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
56 :
57 : virtual eMathMLFrameType GetMathMLFrameType();
58 :
59 : virtual void
60 : SetAdditionalStyleContext(PRInt32 aIndex,
61 : nsStyleContext* aStyleContext);
62 : virtual nsStyleContext*
63 : GetAdditionalStyleContext(PRInt32 aIndex) const;
64 :
65 : NS_IMETHOD BuildDisplayList(nsDisplayListBuilder* aBuilder,
66 : const nsRect& aDirtyRect,
67 : const nsDisplayListSet& aLists);
68 :
69 : NS_IMETHOD
70 : InheritAutomaticData(nsIFrame* aParent);
71 :
72 : NS_IMETHOD
73 : TransmitAutomaticData();
74 :
75 : NS_IMETHOD
76 : Reflow(nsPresContext* aPresContext,
77 : nsHTMLReflowMetrics& aDesiredSize,
78 : const nsHTMLReflowState& aReflowState,
79 : nsReflowStatus& aStatus);
80 :
81 : virtual void MarkIntrinsicWidthsDirty();
82 :
83 : virtual nscoord
84 : GetIntrinsicWidth(nsRenderingContext *aRenderingContext);
85 :
86 : NS_IMETHOD
87 : AttributeChanged(PRInt32 aNameSpaceID,
88 : nsIAtom* aAttribute,
89 : PRInt32 aModType);
90 :
91 : // This method is called by the parent frame to ask <mo>
92 : // to stretch itself.
93 : NS_IMETHOD
94 : Stretch(nsRenderingContext& aRenderingContext,
95 : nsStretchDirection aStretchDirection,
96 : nsBoundingMetrics& aContainerSize,
97 : nsHTMLReflowMetrics& aDesiredStretchSize);
98 :
99 : protected:
100 0 : nsMathMLmoFrame(nsStyleContext* aContext) : nsMathMLTokenFrame(aContext) {}
101 : virtual ~nsMathMLmoFrame();
102 :
103 0 : virtual PRIntn GetSkipSides() const { return 0; }
104 :
105 : nsMathMLChar mMathMLChar; // Here is the MathMLChar that will deal with the operator.
106 : nsOperatorFlags mFlags;
107 : float mMinSize;
108 : float mMaxSize;
109 :
110 : bool UseMathMLChar();
111 :
112 : // overload the base method so that we can setup our nsMathMLChar
113 : virtual void ProcessTextData();
114 :
115 : // helper to get our 'form' and lookup in the Operator Dictionary to fetch
116 : // our default data that may come from there, and to complete the setup
117 : // using attributes that we may have
118 : void
119 : ProcessOperatorData();
120 :
121 : // helper to double check thar our char should be rendered as a selected char
122 : bool
123 : IsFrameInSelection(nsIFrame* aFrame);
124 : };
125 :
126 : #endif /* nsMathMLmoFrame_h___ */
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