summaryrefslogtreecommitdiff
path: root/dom/media/TextTrackRegion.h
blob: 5d66c1c475e8aa1491d93f9c4d82b56f677f807d (plain)
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
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 et tw=78: */
/* 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 mozilla_dom_TextTrackRegion_h
#define mozilla_dom_TextTrackRegion_h

#include "nsCycleCollectionParticipant.h"
#include "nsString.h"
#include "nsWrapperCache.h"
#include "mozilla/ErrorResult.h"
#include "mozilla/dom/TextTrack.h"
#include "mozilla/Preferences.h"

namespace mozilla {
namespace dom {

class GlobalObject;
class TextTrack;

class TextTrackRegion final : public nsISupports,
                              public nsWrapperCache
{
public:

  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(TextTrackRegion)

  JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;

  nsISupports* GetParentObject() const
  {
    return mParent;
  }

  explicit TextTrackRegion(nsISupports* aGlobal);

  /** WebIDL Methods. */

  static already_AddRefed<TextTrackRegion>
  Constructor(const GlobalObject& aGlobal, ErrorResult& aRv);

  double Lines() const
  {
    return mLines;
  }

  void SetLines(double aLines)
  {
    mLines = aLines;
  }

  double Width() const
  {
    return mWidth;
  }

  void SetWidth(double aWidth, ErrorResult& aRv)
  {
    if (!InvalidValue(aWidth, aRv)) {
      mWidth = aWidth;
    }
  }

  double RegionAnchorX() const
  {
    return mRegionAnchorX;
  }

  void SetRegionAnchorX(double aVal, ErrorResult& aRv)
  {
    if (!InvalidValue(aVal, aRv)) {
      mRegionAnchorX = aVal;
    }
  }

  double RegionAnchorY() const
  {
    return mRegionAnchorY;
  }

  void SetRegionAnchorY(double aVal, ErrorResult& aRv)
  {
    if (!InvalidValue(aVal, aRv)) {
      mRegionAnchorY = aVal;
    }
  }

  double ViewportAnchorX() const
  {
    return mViewportAnchorX;
  }

  void SetViewportAnchorX(double aVal, ErrorResult& aRv)
  {
    if (!InvalidValue(aVal, aRv)) {
      mViewportAnchorX = aVal;
    }
  }

  double ViewportAnchorY() const
  {
    return mViewportAnchorY;
  }

  void SetViewportAnchorY(double aVal, ErrorResult& aRv)
  {
    if (!InvalidValue(aVal, aRv)) {
      mViewportAnchorY = aVal;
    }
  }

  void GetScroll(nsAString& aScroll) const
  {
    aScroll = mScroll;
  }

  void SetScroll(const nsAString& aScroll, ErrorResult& aRv)
  {
    if (!aScroll.EqualsLiteral("") && !aScroll.EqualsLiteral("up")) {
      aRv.Throw(NS_ERROR_DOM_SYNTAX_ERR);
      return;
    }

    mScroll = aScroll;
  }

  /** end WebIDL Methods. */


  // Helper to aid copying of a given TextTrackRegion's width, lines,
  // anchor, viewport and scroll values.
  void CopyValues(TextTrackRegion& aRegion);

  // -----helpers-------
  const nsAString& Scroll() const
  {
    return mScroll;
  }

private:
  ~TextTrackRegion() {}

  nsCOMPtr<nsISupports> mParent;
  double mWidth;
  long mLines;
  double mRegionAnchorX;
  double mRegionAnchorY;
  double mViewportAnchorX;
  double mViewportAnchorY;
  nsString mScroll;

  // Helper to ensure new value is in the range: 0.0% - 100.0%; throws
  // an IndexSizeError otherwise.
  inline bool InvalidValue(double aValue, ErrorResult& aRv)
  {
    if(aValue < 0.0  || aValue > 100.0) {
      aRv.Throw(NS_ERROR_DOM_INDEX_SIZE_ERR);
      return true;
    }

    return false;
  }

};

} //namespace dom
} //namespace mozilla

#endif //mozilla_dom_TextTrackRegion_h