gecko-dev/widget/TextRange.h

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4.7 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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_TextRage_h_
#define mozilla_TextRage_h_
#include <stdint.h>
#include "nsColor.h"
#include "nsStyleConsts.h"
namespace mozilla {
/******************************************************************************
* mozilla::TextRangeStyle
******************************************************************************/
struct TextRangeStyle
{
enum
{
LINESTYLE_NONE = NS_STYLE_TEXT_DECORATION_STYLE_NONE,
LINESTYLE_SOLID = NS_STYLE_TEXT_DECORATION_STYLE_SOLID,
LINESTYLE_DOTTED = NS_STYLE_TEXT_DECORATION_STYLE_DOTTED,
LINESTYLE_DASHED = NS_STYLE_TEXT_DECORATION_STYLE_DASHED,
LINESTYLE_DOUBLE = NS_STYLE_TEXT_DECORATION_STYLE_DOUBLE,
LINESTYLE_WAVY = NS_STYLE_TEXT_DECORATION_STYLE_WAVY
};
enum
{
DEFINED_NONE = 0x00,
DEFINED_LINESTYLE = 0x01,
DEFINED_FOREGROUND_COLOR = 0x02,
DEFINED_BACKGROUND_COLOR = 0x04,
DEFINED_UNDERLINE_COLOR = 0x08
};
// Initialize all members, because TextRange instances may be compared by
// memcomp.
TextRangeStyle()
{
Clear();
}
void Clear()
{
mDefinedStyles = DEFINED_NONE;
mLineStyle = LINESTYLE_NONE;
mIsBoldLine = false;
mForegroundColor = mBackgroundColor = mUnderlineColor = NS_RGBA(0, 0, 0, 0);
}
bool IsDefined() const { return mDefinedStyles != DEFINED_NONE; }
bool IsLineStyleDefined() const
{
return (mDefinedStyles & DEFINED_LINESTYLE) != 0;
}
bool IsForegroundColorDefined() const
{
return (mDefinedStyles & DEFINED_FOREGROUND_COLOR) != 0;
}
bool IsBackgroundColorDefined() const
{
return (mDefinedStyles & DEFINED_BACKGROUND_COLOR) != 0;
}
bool IsUnderlineColorDefined() const
{
return (mDefinedStyles & DEFINED_UNDERLINE_COLOR) != 0;
}
bool IsNoChangeStyle() const
{
return !IsForegroundColorDefined() && !IsBackgroundColorDefined() &&
IsLineStyleDefined() && mLineStyle == LINESTYLE_NONE;
}
bool Equals(const TextRangeStyle& aOther)
{
if (mDefinedStyles != aOther.mDefinedStyles)
return false;
if (IsLineStyleDefined() && (mLineStyle != aOther.mLineStyle ||
!mIsBoldLine != !aOther.mIsBoldLine))
return false;
if (IsForegroundColorDefined() &&
(mForegroundColor != aOther.mForegroundColor))
return false;
if (IsBackgroundColorDefined() &&
(mBackgroundColor != aOther.mBackgroundColor))
return false;
if (IsUnderlineColorDefined() &&
(mUnderlineColor != aOther.mUnderlineColor))
return false;
return true;
}
bool operator !=(const TextRangeStyle &aOther)
{
return !Equals(aOther);
}
bool operator ==(const TextRangeStyle &aOther)
{
return Equals(aOther);
}
uint8_t mDefinedStyles;
uint8_t mLineStyle; // DEFINED_LINESTYLE
bool mIsBoldLine; // DEFINED_LINESTYLE
nscolor mForegroundColor; // DEFINED_FOREGROUND_COLOR
nscolor mBackgroundColor; // DEFINED_BACKGROUND_COLOR
nscolor mUnderlineColor; // DEFINED_UNDERLINE_COLOR
};
/******************************************************************************
* mozilla::TextRange
******************************************************************************/
// Sync with nsIPrivateTextRange.h when you change these constants.
#define NS_TEXTRANGE_CARETPOSITION 0x01
#define NS_TEXTRANGE_RAWINPUT 0x02
#define NS_TEXTRANGE_SELECTEDRAWTEXT 0x03
#define NS_TEXTRANGE_CONVERTEDTEXT 0x04
#define NS_TEXTRANGE_SELECTEDCONVERTEDTEXT 0x05
struct TextRange
{
TextRange() :
mStartOffset(0), mEndOffset(0), mRangeType(0)
{
}
uint32_t mStartOffset;
// XXX Storing end offset makes the initializing code very complicated.
// We should replace it with mLength.
uint32_t mEndOffset;
uint32_t mRangeType;
TextRangeStyle mRangeStyle;
uint32_t Length() const { return mEndOffset - mStartOffset; }
bool IsClause() const
{
MOZ_ASSERT(mRangeType >= NS_TEXTRANGE_CARETPOSITION &&
mRangeType <= NS_TEXTRANGE_SELECTEDCONVERTEDTEXT,
"Invalid range type");
return mRangeType != NS_TEXTRANGE_CARETPOSITION;
}
};
/******************************************************************************
* mozilla::TextRangeArray
*
* XXX This should be replaced with nsTArray<TextRange>.
******************************************************************************/
typedef TextRange* TextRangeArray;
} // namespace mozilla
#endif // mozilla_TextRage_h_