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widget/TextRange.h@b8a032363ba2 (annotated)

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

michael@0 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0 2 /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0 3 * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0 5
michael@0 6 #ifndef mozilla_TextRage_h_
michael@0 7 #define mozilla_TextRage_h_
michael@0 8
michael@0 9 #include <stdint.h>
michael@0 10
michael@0 11 #include "nsAutoPtr.h"
michael@0 12 #include "nsColor.h"
michael@0 13 #include "nsStyleConsts.h"
michael@0 14 #include "nsTArray.h"
michael@0 15
michael@0 16 namespace mozilla {
michael@0 17
michael@0 18 /******************************************************************************
michael@0 19 * mozilla::TextRangeStyle
michael@0 20 ******************************************************************************/
michael@0 21
michael@0 22 struct TextRangeStyle
michael@0 23 {
michael@0 24 enum
michael@0 25 {
michael@0 26 LINESTYLE_NONE = NS_STYLE_TEXT_DECORATION_STYLE_NONE,
michael@0 27 LINESTYLE_SOLID = NS_STYLE_TEXT_DECORATION_STYLE_SOLID,
michael@0 28 LINESTYLE_DOTTED = NS_STYLE_TEXT_DECORATION_STYLE_DOTTED,
michael@0 29 LINESTYLE_DASHED = NS_STYLE_TEXT_DECORATION_STYLE_DASHED,
michael@0 30 LINESTYLE_DOUBLE = NS_STYLE_TEXT_DECORATION_STYLE_DOUBLE,
michael@0 31 LINESTYLE_WAVY = NS_STYLE_TEXT_DECORATION_STYLE_WAVY
michael@0 32 };
michael@0 33
michael@0 34 enum
michael@0 35 {
michael@0 36 DEFINED_NONE = 0x00,
michael@0 37 DEFINED_LINESTYLE = 0x01,
michael@0 38 DEFINED_FOREGROUND_COLOR = 0x02,
michael@0 39 DEFINED_BACKGROUND_COLOR = 0x04,
michael@0 40 DEFINED_UNDERLINE_COLOR = 0x08
michael@0 41 };
michael@0 42
michael@0 43 // Initialize all members, because TextRange instances may be compared by
michael@0 44 // memcomp.
michael@0 45 TextRangeStyle()
michael@0 46 {
michael@0 47 Clear();
michael@0 48 }
michael@0 49
michael@0 50 void Clear()
michael@0 51 {
michael@0 52 mDefinedStyles = DEFINED_NONE;
michael@0 53 mLineStyle = LINESTYLE_NONE;
michael@0 54 mIsBoldLine = false;
michael@0 55 mForegroundColor = mBackgroundColor = mUnderlineColor = NS_RGBA(0, 0, 0, 0);
michael@0 56 }
michael@0 57
michael@0 58 bool IsDefined() const { return mDefinedStyles != DEFINED_NONE; }
michael@0 59
michael@0 60 bool IsLineStyleDefined() const
michael@0 61 {
michael@0 62 return (mDefinedStyles & DEFINED_LINESTYLE) != 0;
michael@0 63 }
michael@0 64
michael@0 65 bool IsForegroundColorDefined() const
michael@0 66 {
michael@0 67 return (mDefinedStyles & DEFINED_FOREGROUND_COLOR) != 0;
michael@0 68 }
michael@0 69
michael@0 70 bool IsBackgroundColorDefined() const
michael@0 71 {
michael@0 72 return (mDefinedStyles & DEFINED_BACKGROUND_COLOR) != 0;
michael@0 73 }
michael@0 74
michael@0 75 bool IsUnderlineColorDefined() const
michael@0 76 {
michael@0 77 return (mDefinedStyles & DEFINED_UNDERLINE_COLOR) != 0;
michael@0 78 }
michael@0 79
michael@0 80 bool IsNoChangeStyle() const
michael@0 81 {
michael@0 82 return !IsForegroundColorDefined() && !IsBackgroundColorDefined() &&
michael@0 83 IsLineStyleDefined() && mLineStyle == LINESTYLE_NONE;
michael@0 84 }
michael@0 85
michael@0 86 bool Equals(const TextRangeStyle& aOther)
michael@0 87 {
michael@0 88 if (mDefinedStyles != aOther.mDefinedStyles)
michael@0 89 return false;
michael@0 90 if (IsLineStyleDefined() && (mLineStyle != aOther.mLineStyle ||
michael@0 91 !mIsBoldLine != !aOther.mIsBoldLine))
michael@0 92 return false;
michael@0 93 if (IsForegroundColorDefined() &&
michael@0 94 (mForegroundColor != aOther.mForegroundColor))
michael@0 95 return false;
michael@0 96 if (IsBackgroundColorDefined() &&
michael@0 97 (mBackgroundColor != aOther.mBackgroundColor))
michael@0 98 return false;
michael@0 99 if (IsUnderlineColorDefined() &&
michael@0 100 (mUnderlineColor != aOther.mUnderlineColor))
michael@0 101 return false;
michael@0 102 return true;
michael@0 103 }
michael@0 104
michael@0 105 bool operator !=(const TextRangeStyle &aOther)
michael@0 106 {
michael@0 107 return !Equals(aOther);
michael@0 108 }
michael@0 109
michael@0 110 bool operator ==(const TextRangeStyle &aOther)
michael@0 111 {
michael@0 112 return Equals(aOther);
michael@0 113 }
michael@0 114
michael@0 115 uint8_t mDefinedStyles;
michael@0 116 uint8_t mLineStyle; // DEFINED_LINESTYLE
michael@0 117
michael@0 118 bool mIsBoldLine; // DEFINED_LINESTYLE
michael@0 119
michael@0 120 nscolor mForegroundColor; // DEFINED_FOREGROUND_COLOR
michael@0 121 nscolor mBackgroundColor; // DEFINED_BACKGROUND_COLOR
michael@0 122 nscolor mUnderlineColor; // DEFINED_UNDERLINE_COLOR
michael@0 123 };
michael@0 124
michael@0 125 /******************************************************************************
michael@0 126 * mozilla::TextRange
michael@0 127 ******************************************************************************/
michael@0 128
michael@0 129 #define NS_TEXTRANGE_CARETPOSITION 0x01
michael@0 130 #define NS_TEXTRANGE_RAWINPUT 0x02
michael@0 131 #define NS_TEXTRANGE_SELECTEDRAWTEXT 0x03
michael@0 132 #define NS_TEXTRANGE_CONVERTEDTEXT 0x04
michael@0 133 #define NS_TEXTRANGE_SELECTEDCONVERTEDTEXT 0x05
michael@0 134
michael@0 135 struct TextRange
michael@0 136 {
michael@0 137 TextRange() :
michael@0 138 mStartOffset(0), mEndOffset(0), mRangeType(0)
michael@0 139 {
michael@0 140 }
michael@0 141
michael@0 142 uint32_t mStartOffset;
michael@0 143 // XXX Storing end offset makes the initializing code very complicated.
michael@0 144 // We should replace it with mLength.
michael@0 145 uint32_t mEndOffset;
michael@0 146 uint32_t mRangeType;
michael@0 147
michael@0 148 TextRangeStyle mRangeStyle;
michael@0 149
michael@0 150 uint32_t Length() const { return mEndOffset - mStartOffset; }
michael@0 151
michael@0 152 bool IsClause() const
michael@0 153 {
michael@0 154 MOZ_ASSERT(mRangeType >= NS_TEXTRANGE_CARETPOSITION &&
michael@0 155 mRangeType <= NS_TEXTRANGE_SELECTEDCONVERTEDTEXT,
michael@0 156 "Invalid range type");
michael@0 157 return mRangeType != NS_TEXTRANGE_CARETPOSITION;
michael@0 158 }
michael@0 159 };
michael@0 160
michael@0 161 /******************************************************************************
michael@0 162 * mozilla::TextRangeArray
michael@0 163 ******************************************************************************/
michael@0 164 class TextRangeArray MOZ_FINAL : public nsAutoTArray<TextRange, 10>
michael@0 165 {
michael@0 166 NS_INLINE_DECL_REFCOUNTING(TextRangeArray)
michael@0 167
michael@0 168 public:
michael@0 169 bool IsComposing() const
michael@0 170 {
michael@0 171 for (uint32_t i = 0; i < Length(); ++i) {
michael@0 172 if (ElementAt(i).IsClause()) {
michael@0 173 return true;
michael@0 174 }
michael@0 175 }
michael@0 176 return false;
michael@0 177 }
michael@0 178
michael@0 179 // Returns target clase offset. If there are selected clauses, this returns
michael@0 180 // the first selected clause offset. Otherwise, 0.
michael@0 181 uint32_t TargetClauseOffset() const
michael@0 182 {
michael@0 183 for (uint32_t i = 0; i < Length(); ++i) {
michael@0 184 const TextRange& range = ElementAt(i);
michael@0 185 if (range.mRangeType == NS_TEXTRANGE_SELECTEDRAWTEXT ||
michael@0 186 range.mRangeType == NS_TEXTRANGE_SELECTEDCONVERTEDTEXT) {
michael@0 187 return range.mStartOffset;
michael@0 188 }
michael@0 189 }
michael@0 190 return 0;
michael@0 191 }
michael@0 192 };
michael@0 193
michael@0 194 } // namespace mozilla
michael@0 195
michael@0 196 #endif // mozilla_TextRage_h_

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