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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
****************************************************************************/
#pragma once
#include <QObject>
#include <QList>
#include <QVector>
#include <QTextCursor>
#include <QColor>
QT_FORWARD_DECLARE_CLASS(QWidget)
QT_FORWARD_DECLARE_CLASS(QPainterPath)
namespace TextEditor {
class NameMangler;
class TextEditorWidget;
namespace Internal {
struct OverlaySelection
{
OverlaySelection() = default;
QTextCursor m_cursor_begin;
QTextCursor m_cursor_end;
QColor m_fg;
QColor m_bg;
int m_fixedLength = -1;
bool m_dropShadow = false;
};
class TextEditorOverlay : public QObject
{
Q_OBJECT
public:
TextEditorOverlay(TextEditorWidget *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);
const QList<OverlaySelection> &selections() const { return m_selections; }
inline bool isEmpty() const { return m_selections.isEmpty(); }
inline int dropShadowWidth() const { return m_dropShadowWidth; }
bool hasCursorInSelection(const QTextCursor &cursor) const;
void mapEquivalentSelections();
void updateEquivalentSelections(const QTextCursor &cursor);
void setNameMangler(const QList<NameMangler *> &manglers);
void mangle();
bool hasFirstSelectionBeginMoved() 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);
int selectionIndexForCursor(const QTextCursor &cursor) const;
QString selectionText(int selectionIndex) const;
QTextCursor assembleCursorForSelection(int selectionIndex) const;
bool m_visible;
bool m_alpha;
int m_borderWidth;
int m_dropShadowWidth;
int m_firstSelectionOriginalBegin;
TextEditorWidget *m_editor;
QWidget *m_viewport;
QList<OverlaySelection> m_selections;
QVector<QList<int> > m_equivalentSelections;
QList<NameMangler *> m_manglers;
};
} // namespace Internal
} // namespace TextEditor
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