1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/widget/TextRange.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,196 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#ifndef mozilla_TextRage_h_
1.10 +#define mozilla_TextRage_h_
1.11 +
1.12 +#include <stdint.h>
1.13 +
1.14 +#include "nsAutoPtr.h"
1.15 +#include "nsColor.h"
1.16 +#include "nsStyleConsts.h"
1.17 +#include "nsTArray.h"
1.18 +
1.19 +namespace mozilla {
1.20 +
1.21 +/******************************************************************************
1.22 + * mozilla::TextRangeStyle
1.23 + ******************************************************************************/
1.24 +
1.25 +struct TextRangeStyle
1.26 +{
1.27 + enum
1.28 + {
1.29 + LINESTYLE_NONE = NS_STYLE_TEXT_DECORATION_STYLE_NONE,
1.30 + LINESTYLE_SOLID = NS_STYLE_TEXT_DECORATION_STYLE_SOLID,
1.31 + LINESTYLE_DOTTED = NS_STYLE_TEXT_DECORATION_STYLE_DOTTED,
1.32 + LINESTYLE_DASHED = NS_STYLE_TEXT_DECORATION_STYLE_DASHED,
1.33 + LINESTYLE_DOUBLE = NS_STYLE_TEXT_DECORATION_STYLE_DOUBLE,
1.34 + LINESTYLE_WAVY = NS_STYLE_TEXT_DECORATION_STYLE_WAVY
1.35 + };
1.36 +
1.37 + enum
1.38 + {
1.39 + DEFINED_NONE = 0x00,
1.40 + DEFINED_LINESTYLE = 0x01,
1.41 + DEFINED_FOREGROUND_COLOR = 0x02,
1.42 + DEFINED_BACKGROUND_COLOR = 0x04,
1.43 + DEFINED_UNDERLINE_COLOR = 0x08
1.44 + };
1.45 +
1.46 + // Initialize all members, because TextRange instances may be compared by
1.47 + // memcomp.
1.48 + TextRangeStyle()
1.49 + {
1.50 + Clear();
1.51 + }
1.52 +
1.53 + void Clear()
1.54 + {
1.55 + mDefinedStyles = DEFINED_NONE;
1.56 + mLineStyle = LINESTYLE_NONE;
1.57 + mIsBoldLine = false;
1.58 + mForegroundColor = mBackgroundColor = mUnderlineColor = NS_RGBA(0, 0, 0, 0);
1.59 + }
1.60 +
1.61 + bool IsDefined() const { return mDefinedStyles != DEFINED_NONE; }
1.62 +
1.63 + bool IsLineStyleDefined() const
1.64 + {
1.65 + return (mDefinedStyles & DEFINED_LINESTYLE) != 0;
1.66 + }
1.67 +
1.68 + bool IsForegroundColorDefined() const
1.69 + {
1.70 + return (mDefinedStyles & DEFINED_FOREGROUND_COLOR) != 0;
1.71 + }
1.72 +
1.73 + bool IsBackgroundColorDefined() const
1.74 + {
1.75 + return (mDefinedStyles & DEFINED_BACKGROUND_COLOR) != 0;
1.76 + }
1.77 +
1.78 + bool IsUnderlineColorDefined() const
1.79 + {
1.80 + return (mDefinedStyles & DEFINED_UNDERLINE_COLOR) != 0;
1.81 + }
1.82 +
1.83 + bool IsNoChangeStyle() const
1.84 + {
1.85 + return !IsForegroundColorDefined() && !IsBackgroundColorDefined() &&
1.86 + IsLineStyleDefined() && mLineStyle == LINESTYLE_NONE;
1.87 + }
1.88 +
1.89 + bool Equals(const TextRangeStyle& aOther)
1.90 + {
1.91 + if (mDefinedStyles != aOther.mDefinedStyles)
1.92 + return false;
1.93 + if (IsLineStyleDefined() && (mLineStyle != aOther.mLineStyle ||
1.94 + !mIsBoldLine != !aOther.mIsBoldLine))
1.95 + return false;
1.96 + if (IsForegroundColorDefined() &&
1.97 + (mForegroundColor != aOther.mForegroundColor))
1.98 + return false;
1.99 + if (IsBackgroundColorDefined() &&
1.100 + (mBackgroundColor != aOther.mBackgroundColor))
1.101 + return false;
1.102 + if (IsUnderlineColorDefined() &&
1.103 + (mUnderlineColor != aOther.mUnderlineColor))
1.104 + return false;
1.105 + return true;
1.106 + }
1.107 +
1.108 + bool operator !=(const TextRangeStyle &aOther)
1.109 + {
1.110 + return !Equals(aOther);
1.111 + }
1.112 +
1.113 + bool operator ==(const TextRangeStyle &aOther)
1.114 + {
1.115 + return Equals(aOther);
1.116 + }
1.117 +
1.118 + uint8_t mDefinedStyles;
1.119 + uint8_t mLineStyle; // DEFINED_LINESTYLE
1.120 +
1.121 + bool mIsBoldLine; // DEFINED_LINESTYLE
1.122 +
1.123 + nscolor mForegroundColor; // DEFINED_FOREGROUND_COLOR
1.124 + nscolor mBackgroundColor; // DEFINED_BACKGROUND_COLOR
1.125 + nscolor mUnderlineColor; // DEFINED_UNDERLINE_COLOR
1.126 +};
1.127 +
1.128 +/******************************************************************************
1.129 + * mozilla::TextRange
1.130 + ******************************************************************************/
1.131 +
1.132 +#define NS_TEXTRANGE_CARETPOSITION 0x01
1.133 +#define NS_TEXTRANGE_RAWINPUT 0x02
1.134 +#define NS_TEXTRANGE_SELECTEDRAWTEXT 0x03
1.135 +#define NS_TEXTRANGE_CONVERTEDTEXT 0x04
1.136 +#define NS_TEXTRANGE_SELECTEDCONVERTEDTEXT 0x05
1.137 +
1.138 +struct TextRange
1.139 +{
1.140 + TextRange() :
1.141 + mStartOffset(0), mEndOffset(0), mRangeType(0)
1.142 + {
1.143 + }
1.144 +
1.145 + uint32_t mStartOffset;
1.146 + // XXX Storing end offset makes the initializing code very complicated.
1.147 + // We should replace it with mLength.
1.148 + uint32_t mEndOffset;
1.149 + uint32_t mRangeType;
1.150 +
1.151 + TextRangeStyle mRangeStyle;
1.152 +
1.153 + uint32_t Length() const { return mEndOffset - mStartOffset; }
1.154 +
1.155 + bool IsClause() const
1.156 + {
1.157 + MOZ_ASSERT(mRangeType >= NS_TEXTRANGE_CARETPOSITION &&
1.158 + mRangeType <= NS_TEXTRANGE_SELECTEDCONVERTEDTEXT,
1.159 + "Invalid range type");
1.160 + return mRangeType != NS_TEXTRANGE_CARETPOSITION;
1.161 + }
1.162 +};
1.163 +
1.164 +/******************************************************************************
1.165 + * mozilla::TextRangeArray
1.166 + ******************************************************************************/
1.167 +class TextRangeArray MOZ_FINAL : public nsAutoTArray<TextRange, 10>
1.168 +{
1.169 + NS_INLINE_DECL_REFCOUNTING(TextRangeArray)
1.170 +
1.171 +public:
1.172 + bool IsComposing() const
1.173 + {
1.174 + for (uint32_t i = 0; i < Length(); ++i) {
1.175 + if (ElementAt(i).IsClause()) {
1.176 + return true;
1.177 + }
1.178 + }
1.179 + return false;
1.180 + }
1.181 +
1.182 + // Returns target clase offset. If there are selected clauses, this returns
1.183 + // the first selected clause offset. Otherwise, 0.
1.184 + uint32_t TargetClauseOffset() const
1.185 + {
1.186 + for (uint32_t i = 0; i < Length(); ++i) {
1.187 + const TextRange& range = ElementAt(i);
1.188 + if (range.mRangeType == NS_TEXTRANGE_SELECTEDRAWTEXT ||
1.189 + range.mRangeType == NS_TEXTRANGE_SELECTEDCONVERTEDTEXT) {
1.190 + return range.mStartOffset;
1.191 + }
1.192 + }
1.193 + return 0;
1.194 + }
1.195 +};
1.196 +
1.197 +} // namespace mozilla
1.198 +
1.199 +#endif // mozilla_TextRage_h_
