mirror of
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264 lines
6.9 KiB
C++
264 lines
6.9 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_TextRage_h_
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#define mozilla_TextRage_h_
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#include <stdint.h>
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#include "nsAutoPtr.h"
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#include "nsColor.h"
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#include "nsITextInputProcessor.h"
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#include "nsStyleConsts.h"
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#include "nsTArray.h"
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namespace mozilla {
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/******************************************************************************
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* mozilla::TextRangeStyle
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******************************************************************************/
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struct TextRangeStyle
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{
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enum
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{
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LINESTYLE_NONE = NS_STYLE_TEXT_DECORATION_STYLE_NONE,
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LINESTYLE_SOLID = NS_STYLE_TEXT_DECORATION_STYLE_SOLID,
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LINESTYLE_DOTTED = NS_STYLE_TEXT_DECORATION_STYLE_DOTTED,
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LINESTYLE_DASHED = NS_STYLE_TEXT_DECORATION_STYLE_DASHED,
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LINESTYLE_DOUBLE = NS_STYLE_TEXT_DECORATION_STYLE_DOUBLE,
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LINESTYLE_WAVY = NS_STYLE_TEXT_DECORATION_STYLE_WAVY
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};
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enum
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{
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DEFINED_NONE = 0x00,
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DEFINED_LINESTYLE = 0x01,
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DEFINED_FOREGROUND_COLOR = 0x02,
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DEFINED_BACKGROUND_COLOR = 0x04,
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DEFINED_UNDERLINE_COLOR = 0x08
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};
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// Initialize all members, because TextRange instances may be compared by
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// memcomp.
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TextRangeStyle()
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{
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Clear();
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}
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void Clear()
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{
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mDefinedStyles = DEFINED_NONE;
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mLineStyle = LINESTYLE_NONE;
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mIsBoldLine = false;
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mForegroundColor = mBackgroundColor = mUnderlineColor = NS_RGBA(0, 0, 0, 0);
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}
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bool IsDefined() const { return mDefinedStyles != DEFINED_NONE; }
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bool IsLineStyleDefined() const
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{
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return (mDefinedStyles & DEFINED_LINESTYLE) != 0;
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}
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bool IsForegroundColorDefined() const
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{
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return (mDefinedStyles & DEFINED_FOREGROUND_COLOR) != 0;
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}
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bool IsBackgroundColorDefined() const
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{
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return (mDefinedStyles & DEFINED_BACKGROUND_COLOR) != 0;
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}
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bool IsUnderlineColorDefined() const
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{
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return (mDefinedStyles & DEFINED_UNDERLINE_COLOR) != 0;
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}
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bool IsNoChangeStyle() const
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{
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return !IsForegroundColorDefined() && !IsBackgroundColorDefined() &&
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IsLineStyleDefined() && mLineStyle == LINESTYLE_NONE;
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}
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bool Equals(const TextRangeStyle& aOther) const
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{
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if (mDefinedStyles != aOther.mDefinedStyles)
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return false;
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if (IsLineStyleDefined() && (mLineStyle != aOther.mLineStyle ||
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!mIsBoldLine != !aOther.mIsBoldLine))
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return false;
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if (IsForegroundColorDefined() &&
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(mForegroundColor != aOther.mForegroundColor))
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return false;
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if (IsBackgroundColorDefined() &&
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(mBackgroundColor != aOther.mBackgroundColor))
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return false;
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if (IsUnderlineColorDefined() &&
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(mUnderlineColor != aOther.mUnderlineColor))
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return false;
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return true;
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}
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bool operator !=(const TextRangeStyle &aOther) const
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{
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return !Equals(aOther);
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}
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bool operator ==(const TextRangeStyle &aOther) const
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{
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return Equals(aOther);
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}
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uint8_t mDefinedStyles;
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uint8_t mLineStyle; // DEFINED_LINESTYLE
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bool mIsBoldLine; // DEFINED_LINESTYLE
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nscolor mForegroundColor; // DEFINED_FOREGROUND_COLOR
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nscolor mBackgroundColor; // DEFINED_BACKGROUND_COLOR
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nscolor mUnderlineColor; // DEFINED_UNDERLINE_COLOR
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};
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/******************************************************************************
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* mozilla::TextRange
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******************************************************************************/
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// XXX NS_TEXTRANGE_* should be moved into TextRange as an typed enum.
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enum
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{
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NS_TEXTRANGE_UNDEFINED = 0x00,
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NS_TEXTRANGE_CARETPOSITION = 0x01,
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NS_TEXTRANGE_RAWINPUT =
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nsITextInputProcessor::ATTR_RAW_CLAUSE,
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NS_TEXTRANGE_SELECTEDRAWTEXT =
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nsITextInputProcessor::ATTR_SELECTED_RAW_CLAUSE,
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NS_TEXTRANGE_CONVERTEDTEXT =
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nsITextInputProcessor::ATTR_CONVERTED_CLAUSE,
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NS_TEXTRANGE_SELECTEDCONVERTEDTEXT =
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nsITextInputProcessor::ATTR_SELECTED_CLAUSE
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};
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struct TextRange
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{
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TextRange() :
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mStartOffset(0), mEndOffset(0), mRangeType(NS_TEXTRANGE_UNDEFINED)
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{
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}
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uint32_t mStartOffset;
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// XXX Storing end offset makes the initializing code very complicated.
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// We should replace it with mLength.
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uint32_t mEndOffset;
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uint32_t mRangeType;
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TextRangeStyle mRangeStyle;
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uint32_t Length() const { return mEndOffset - mStartOffset; }
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bool IsClause() const
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{
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MOZ_ASSERT(mRangeType >= NS_TEXTRANGE_CARETPOSITION &&
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mRangeType <= NS_TEXTRANGE_SELECTEDCONVERTEDTEXT,
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"Invalid range type");
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return mRangeType != NS_TEXTRANGE_CARETPOSITION;
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}
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bool Equals(const TextRange& aOther) const
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{
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return mStartOffset == aOther.mStartOffset &&
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mEndOffset == aOther.mEndOffset &&
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mRangeType == aOther.mRangeType &&
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mRangeStyle == aOther.mRangeStyle;
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}
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void RemoveCharacter(uint32_t aOffset)
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{
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if (mStartOffset > aOffset) {
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--mStartOffset;
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--mEndOffset;
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} else if (mEndOffset > aOffset) {
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--mEndOffset;
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}
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}
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};
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/******************************************************************************
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* mozilla::TextRangeArray
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******************************************************************************/
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class TextRangeArray final : public nsAutoTArray<TextRange, 10>
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{
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friend class WidgetCompositionEvent;
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~TextRangeArray() {}
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NS_INLINE_DECL_REFCOUNTING(TextRangeArray)
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const TextRange* GetTargetClause() const
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{
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for (uint32_t i = 0; i < Length(); ++i) {
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const TextRange& range = ElementAt(i);
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if (range.mRangeType == NS_TEXTRANGE_SELECTEDRAWTEXT ||
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range.mRangeType == NS_TEXTRANGE_SELECTEDCONVERTEDTEXT) {
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return ⦥
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}
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}
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return nullptr;
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}
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// Returns target clause offset. If there are selected clauses, this returns
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// the first selected clause offset. Otherwise, 0.
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uint32_t TargetClauseOffset() const
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{
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const TextRange* range = GetTargetClause();
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return range ? range->mStartOffset : 0;
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}
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// Returns target clause length. If there are selected clauses, this returns
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// the first selected clause length. Otherwise, UINT32_MAX.
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uint32_t TargetClauseLength() const
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{
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const TextRange* range = GetTargetClause();
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return range ? range->Length() : UINT32_MAX;
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}
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public:
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bool IsComposing() const
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{
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for (uint32_t i = 0; i < Length(); ++i) {
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if (ElementAt(i).IsClause()) {
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return true;
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}
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}
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return false;
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}
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bool Equals(const TextRangeArray& aOther) const
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{
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size_t len = Length();
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if (len != aOther.Length()) {
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return false;
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}
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for (size_t i = 0; i < len; i++) {
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if (!ElementAt(i).Equals(aOther.ElementAt(i))) {
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return false;
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}
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}
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return true;
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}
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void RemoveCharacter(uint32_t aOffset)
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{
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for (size_t i = 0, len = Length(); i < len; i++) {
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ElementAt(i).RemoveCharacter(aOffset);
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}
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}
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};
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} // namespace mozilla
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#endif // mozilla_TextRage_h_
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