widget/TextRange.h@b8a032363ba2
widget/TextRange.h
Thu, 22 Jan 2015 13:21:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 22 Jan 2015 13:21:57 +0100
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
- permissions
- -rw-r--r--
Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6
1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* This Source Code Form is subject to the terms of the Mozilla Public
3 * License, v. 2.0. If a copy of the MPL was not distributed with this
4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
6 #ifndef mozilla_TextRage_h_
7 #define mozilla_TextRage_h_
9 #include <stdint.h>
11 #include "nsAutoPtr.h"
12 #include "nsColor.h"
13 #include "nsStyleConsts.h"
14 #include "nsTArray.h"
16 namespace mozilla {
18 /******************************************************************************
19 * mozilla::TextRangeStyle
20 ******************************************************************************/
22 struct TextRangeStyle
23 {
24 enum
25 {
26 LINESTYLE_NONE = NS_STYLE_TEXT_DECORATION_STYLE_NONE,
27 LINESTYLE_SOLID = NS_STYLE_TEXT_DECORATION_STYLE_SOLID,
28 LINESTYLE_DOTTED = NS_STYLE_TEXT_DECORATION_STYLE_DOTTED,
29 LINESTYLE_DASHED = NS_STYLE_TEXT_DECORATION_STYLE_DASHED,
30 LINESTYLE_DOUBLE = NS_STYLE_TEXT_DECORATION_STYLE_DOUBLE,
31 LINESTYLE_WAVY = NS_STYLE_TEXT_DECORATION_STYLE_WAVY
32 };
34 enum
35 {
36 DEFINED_NONE = 0x00,
37 DEFINED_LINESTYLE = 0x01,
38 DEFINED_FOREGROUND_COLOR = 0x02,
39 DEFINED_BACKGROUND_COLOR = 0x04,
40 DEFINED_UNDERLINE_COLOR = 0x08
41 };
43 // Initialize all members, because TextRange instances may be compared by
44 // memcomp.
45 TextRangeStyle()
46 {
47 Clear();
48 }
50 void Clear()
51 {
52 mDefinedStyles = DEFINED_NONE;
53 mLineStyle = LINESTYLE_NONE;
54 mIsBoldLine = false;
55 mForegroundColor = mBackgroundColor = mUnderlineColor = NS_RGBA(0, 0, 0, 0);
56 }
58 bool IsDefined() const { return mDefinedStyles != DEFINED_NONE; }
60 bool IsLineStyleDefined() const
61 {
62 return (mDefinedStyles & DEFINED_LINESTYLE) != 0;
63 }
65 bool IsForegroundColorDefined() const
66 {
67 return (mDefinedStyles & DEFINED_FOREGROUND_COLOR) != 0;
68 }
70 bool IsBackgroundColorDefined() const
71 {
72 return (mDefinedStyles & DEFINED_BACKGROUND_COLOR) != 0;
73 }
75 bool IsUnderlineColorDefined() const
76 {
77 return (mDefinedStyles & DEFINED_UNDERLINE_COLOR) != 0;
78 }
80 bool IsNoChangeStyle() const
81 {
82 return !IsForegroundColorDefined() && !IsBackgroundColorDefined() &&
83 IsLineStyleDefined() && mLineStyle == LINESTYLE_NONE;
84 }
86 bool Equals(const TextRangeStyle& aOther)
87 {
88 if (mDefinedStyles != aOther.mDefinedStyles)
89 return false;
90 if (IsLineStyleDefined() && (mLineStyle != aOther.mLineStyle ||
91 !mIsBoldLine != !aOther.mIsBoldLine))
92 return false;
93 if (IsForegroundColorDefined() &&
94 (mForegroundColor != aOther.mForegroundColor))
95 return false;
96 if (IsBackgroundColorDefined() &&
97 (mBackgroundColor != aOther.mBackgroundColor))
98 return false;
99 if (IsUnderlineColorDefined() &&
100 (mUnderlineColor != aOther.mUnderlineColor))
101 return false;
102 return true;
103 }
105 bool operator !=(const TextRangeStyle &aOther)
106 {
107 return !Equals(aOther);
108 }
110 bool operator ==(const TextRangeStyle &aOther)
111 {
112 return Equals(aOther);
113 }
115 uint8_t mDefinedStyles;
116 uint8_t mLineStyle; // DEFINED_LINESTYLE
118 bool mIsBoldLine; // DEFINED_LINESTYLE
120 nscolor mForegroundColor; // DEFINED_FOREGROUND_COLOR
121 nscolor mBackgroundColor; // DEFINED_BACKGROUND_COLOR
122 nscolor mUnderlineColor; // DEFINED_UNDERLINE_COLOR
123 };
125 /******************************************************************************
126 * mozilla::TextRange
127 ******************************************************************************/
129 #define NS_TEXTRANGE_CARETPOSITION 0x01
130 #define NS_TEXTRANGE_RAWINPUT 0x02
131 #define NS_TEXTRANGE_SELECTEDRAWTEXT 0x03
132 #define NS_TEXTRANGE_CONVERTEDTEXT 0x04
133 #define NS_TEXTRANGE_SELECTEDCONVERTEDTEXT 0x05
135 struct TextRange
136 {
137 TextRange() :
138 mStartOffset(0), mEndOffset(0), mRangeType(0)
139 {
140 }
142 uint32_t mStartOffset;
143 // XXX Storing end offset makes the initializing code very complicated.
144 // We should replace it with mLength.
145 uint32_t mEndOffset;
146 uint32_t mRangeType;
148 TextRangeStyle mRangeStyle;
150 uint32_t Length() const { return mEndOffset - mStartOffset; }
152 bool IsClause() const
153 {
154 MOZ_ASSERT(mRangeType >= NS_TEXTRANGE_CARETPOSITION &&
155 mRangeType <= NS_TEXTRANGE_SELECTEDCONVERTEDTEXT,
156 "Invalid range type");
157 return mRangeType != NS_TEXTRANGE_CARETPOSITION;
158 }
159 };
161 /******************************************************************************
162 * mozilla::TextRangeArray
163 ******************************************************************************/
164 class TextRangeArray MOZ_FINAL : public nsAutoTArray<TextRange, 10>
165 {
166 NS_INLINE_DECL_REFCOUNTING(TextRangeArray)
168 public:
169 bool IsComposing() const
170 {
171 for (uint32_t i = 0; i < Length(); ++i) {
172 if (ElementAt(i).IsClause()) {
173 return true;
174 }
175 }
176 return false;
177 }
179 // Returns target clase offset. If there are selected clauses, this returns
180 // the first selected clause offset. Otherwise, 0.
181 uint32_t TargetClauseOffset() const
182 {
183 for (uint32_t i = 0; i < Length(); ++i) {
184 const TextRange& range = ElementAt(i);
185 if (range.mRangeType == NS_TEXTRANGE_SELECTEDRAWTEXT ||
186 range.mRangeType == NS_TEXTRANGE_SELECTEDCONVERTEDTEXT) {
187 return range.mStartOffset;
188 }
189 }
190 return 0;
191 }
192 };
194 } // namespace mozilla
196 #endif // mozilla_TextRage_h_
