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/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** No Commercial Usage
**
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
**
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**************************************************************************/
#ifndef TEXTEDITOROVERLAY_H
#define TEXTEDITOROVERLAY_H
#include <QtGui/QWidget>
#include "basetexteditor.h"
namespace TextEditor {
namespace Internal {
struct TEXTEDITOR_EXPORT OverlaySelection {
OverlaySelection():m_fixedLength(-1), m_dropShadow(false){}
QTextCursor m_cursor_begin;
QTextCursor m_cursor_end;
QColor m_fg;
QColor m_bg;
int m_fixedLength;
bool m_dropShadow;
};
class TEXTEDITOR_EXPORT TextEditorOverlay : public QObject
{
Q_OBJECT
BaseTextEditor *m_editor;
QWidget *m_viewport;
public:
QList<OverlaySelection> m_selections;
private:
bool m_visible;
int m_borderWidth;
int m_dropShadowWidth;
bool m_alpha;
public:
TextEditorOverlay(BaseTextEditor *editor);
QRect rect() const;
void paint(QPainter *painter, const QRect &clip);
void fill(QPainter *painter, const QColor &color, const QRect &clip);
bool isVisible() const { return m_visible; }
void setVisible(bool b);
inline void hide() { setVisible(false); }
inline void show() { setVisible(true); }
void setBorderWidth(int bw) {m_borderWidth = bw; }
void update();
void setAlpha(bool enabled) { m_alpha = enabled; }
void clear();
enum OverlaySelectionFlags {
LockSize = 1,
DropShadow = 2,
ExpandBegin = 4
};
void addOverlaySelection(const QTextCursor &cursor, const QColor &fg, const QColor &bg,
uint overlaySelectionFlags = 0);
void addOverlaySelection(int begin, int end, const QColor &fg, const QColor &bg,
uint overlaySelectionFlags = 0);
inline bool isEmpty() const { return m_selections.isEmpty(); }
inline int dropShadowWidth() const { return m_dropShadowWidth; }
bool hasCursorInSelection(const QTextCursor &cursor) const;
private:
QPainterPath createSelectionPath(const QTextCursor &begin, const QTextCursor &end, const QRect& clip);
void paintSelection(QPainter *painter, const OverlaySelection &selection);
void fillSelection(QPainter *painter, const OverlaySelection &selection, const QColor &color);
};
} // namespace Internal
} // namespace TextEditor
#endif // TEXTEDITOROVERLAY_H
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