File: nsMathMLmoFrame.h

package info (click to toggle)
firefox 141.0.2-1
  • links: PTS, VCS
  • area: main
  • in suites: sid
  • size: 4,550,616 kB
  • sloc: cpp: 7,426,508; javascript: 6,367,238; ansic: 3,707,354; python: 1,368,984; xml: 623,983; asm: 426,916; java: 184,324; sh: 64,488; makefile: 19,203; objc: 13,059; perl: 12,955; yacc: 4,583; cs: 3,846; pascal: 3,352; lex: 1,720; ruby: 1,071; exp: 762; php: 436; lisp: 258; awk: 247; sql: 66; sed: 54; csh: 10
file content (100 lines) | stat: -rw-r--r-- 3,225 bytes parent folder | download | duplicates (4)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef nsMathMLmoFrame_h___
#define nsMathMLmoFrame_h___

#include "mozilla/Attributes.h"
#include "nsMathMLTokenFrame.h"
#include "nsMathMLChar.h"

namespace mozilla {
class PresShell;
}  // namespace mozilla

//
// <mo> -- operator, fence, or separator
//

class nsMathMLmoFrame final : public nsMathMLTokenFrame {
 public:
  NS_DECL_FRAMEARENA_HELPERS(nsMathMLmoFrame)

  friend nsIFrame* NS_NewMathMLmoFrame(mozilla::PresShell* aPresShell,
                                       ComputedStyle* aStyle);

  eMathMLFrameType GetMathMLFrameType() override;

  void DidSetComputedStyle(ComputedStyle* aOldStyle) override;

  void BuildDisplayList(nsDisplayListBuilder* aBuilder,
                        const nsDisplayListSet& aLists) override;

  NS_IMETHOD
  InheritAutomaticData(nsIFrame* aParent) override;

  NS_IMETHOD
  TransmitAutomaticData() override;

  void SetInitialChildList(ChildListID aListID,
                           nsFrameList&& aChildList) override;

  void Reflow(nsPresContext* aPresContext, ReflowOutput& aDesiredSize,
              const ReflowInput& aReflowInput,
              nsReflowStatus& aStatus) override;

  nsresult Place(DrawTarget* aDrawTarget, const PlaceFlags& aFlags,
                 ReflowOutput& aDesiredSize) override;

  void MarkIntrinsicISizesDirty() override;

  void GetIntrinsicISizeMetrics(gfxContext* aRenderingContext,
                                ReflowOutput& aDesiredSize) override;

  nsresult AttributeChanged(int32_t aNameSpaceID, nsAtom* aAttribute,
                            int32_t aModType) override;

  // This method is called by the parent frame to ask <mo>
  // to stretch itself.
  NS_IMETHOD
  Stretch(DrawTarget* aDrawTarget, nsStretchDirection aStretchDirection,
          nsBoundingMetrics& aContainerSize,
          ReflowOutput& aDesiredStretchSize) override;

  nsresult ChildListChanged(int32_t aModType) override {
    ProcessTextData();
    return nsMathMLContainerFrame::ChildListChanged(aModType);
  }

 protected:
  explicit nsMathMLmoFrame(ComputedStyle* aStyle, nsPresContext* aPresContext)
      : nsMathMLTokenFrame(aStyle, aPresContext, kClassID),
        mFlags(0),
        mMinSize(0),
        mMaxSize(0) {}
  virtual ~nsMathMLmoFrame();

  nsMathMLChar
      mMathMLChar;  // Here is the MathMLChar that will deal with the operator.
  nsOperatorFlags mFlags;
  float mMinSize;
  float mMaxSize;

  bool UseMathMLChar();

  // overload the base method so that we can setup our nsMathMLChar
  void ProcessTextData();

  // helper to get our 'form' and lookup in the Operator Dictionary to fetch
  // our default data that may come from there, and to complete the setup
  // using attributes that we may have
  void ProcessOperatorData();

  // helper to double check thar our char should be rendered as a selected char
  bool IsFrameInSelection(nsIFrame* aFrame);
};

#endif /* nsMathMLmoFrame_h___ */