/src/mozilla-central/layout/mathml/nsMathMLmpaddedFrame.h
Line | Count | Source (jump to first uncovered line) |
1 | | /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
2 | | /* vim: set ts=8 sts=2 et sw=2 tw=80: */ |
3 | | /* This Source Code Form is subject to the terms of the Mozilla Public |
4 | | * License, v. 2.0. If a copy of the MPL was not distributed with this |
5 | | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
6 | | |
7 | | #ifndef nsMathMLmpaddedFrame_h___ |
8 | | #define nsMathMLmpaddedFrame_h___ |
9 | | |
10 | | #include "mozilla/Attributes.h" |
11 | | #include "nsMathMLContainerFrame.h" |
12 | | |
13 | | // |
14 | | // <mpadded> -- adjust space around content |
15 | | // |
16 | | |
17 | | class nsMathMLmpaddedFrame final : public nsMathMLContainerFrame |
18 | | { |
19 | | public: |
20 | | NS_DECL_FRAMEARENA_HELPERS(nsMathMLmpaddedFrame) |
21 | | |
22 | | friend nsIFrame* NS_NewMathMLmpaddedFrame(nsIPresShell* aPresShell, ComputedStyle* aStyle); |
23 | | |
24 | | NS_IMETHOD |
25 | | InheritAutomaticData(nsIFrame* aParent) override; |
26 | | |
27 | | NS_IMETHOD |
28 | 0 | TransmitAutomaticData() override { |
29 | 0 | return TransmitAutomaticDataForMrowLikeElement(); |
30 | 0 | } |
31 | | |
32 | | virtual void |
33 | | Reflow(nsPresContext* aPresContext, |
34 | | ReflowOutput& aDesiredSize, |
35 | | const ReflowInput& aReflowInput, |
36 | | nsReflowStatus& aStatus) override; |
37 | | |
38 | | virtual nsresult |
39 | | Place(DrawTarget* aDrawTarget, |
40 | | bool aPlaceOrigin, |
41 | | ReflowOutput& aDesiredSize) override; |
42 | | |
43 | | bool |
44 | 0 | IsMrowLike() override { |
45 | 0 | return mFrames.FirstChild() != mFrames.LastChild() || |
46 | 0 | !mFrames.FirstChild(); |
47 | 0 | } |
48 | | |
49 | | protected: |
50 | | explicit nsMathMLmpaddedFrame(ComputedStyle* aStyle) |
51 | | : nsMathMLContainerFrame(aStyle, kClassID) |
52 | | , mWidthSign(0) |
53 | | , mHeightSign(0) |
54 | | , mDepthSign(0) |
55 | | , mLeadingSpaceSign(0) |
56 | | , mVerticalOffsetSign(0) |
57 | | , mWidthPseudoUnit(0) |
58 | | , mHeightPseudoUnit(0) |
59 | | , mDepthPseudoUnit(0) |
60 | | , mLeadingSpacePseudoUnit(0) |
61 | | , mVerticalOffsetPseudoUnit(0) |
62 | 0 | {} |
63 | | |
64 | | virtual ~nsMathMLmpaddedFrame(); |
65 | | |
66 | | virtual nsresult |
67 | | MeasureForWidth(DrawTarget* aDrawTarget, |
68 | | ReflowOutput& aDesiredSize) override; |
69 | | |
70 | | private: |
71 | | nsCSSValue mWidth; |
72 | | nsCSSValue mHeight; |
73 | | nsCSSValue mDepth; |
74 | | nsCSSValue mLeadingSpace; |
75 | | nsCSSValue mVerticalOffset; |
76 | | |
77 | | int32_t mWidthSign; |
78 | | int32_t mHeightSign; |
79 | | int32_t mDepthSign; |
80 | | int32_t mLeadingSpaceSign; |
81 | | int32_t mVerticalOffsetSign; |
82 | | |
83 | | int32_t mWidthPseudoUnit; |
84 | | int32_t mHeightPseudoUnit; |
85 | | int32_t mDepthPseudoUnit; |
86 | | int32_t mLeadingSpacePseudoUnit; |
87 | | int32_t mVerticalOffsetPseudoUnit; |
88 | | |
89 | | // helpers to process the attributes |
90 | | void |
91 | | ProcessAttributes(); |
92 | | |
93 | | static bool |
94 | | ParseAttribute(nsString& aString, |
95 | | int32_t& aSign, |
96 | | nsCSSValue& aCSSValue, |
97 | | int32_t& aPseudoUnit); |
98 | | |
99 | | void |
100 | | UpdateValue(int32_t aSign, |
101 | | int32_t aPseudoUnit, |
102 | | const nsCSSValue& aCSSValue, |
103 | | const ReflowOutput& aDesiredSize, |
104 | | nscoord& aValueToUpdate, |
105 | | float aFontSizeInflation) const; |
106 | | }; |
107 | | |
108 | | #endif /* nsMathMLmpaddedFrame_h___ */ |