qt-creator/src/plugins/texteditor/itextmark.h

/**************************************************************************
**
** This file is part of Qt Creator
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** Copyright (c) 2012 Nokia Corporation and/or its subsidiary(-ies).
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#ifndef ITEXTMARK_H
#define ITEXTMARK_H

#include "texteditor_global.h"

#include <QObject>
#include <QList>
#include <QMap>
#include <QIcon>

QT_BEGIN_NAMESPACE
class QIcon;
class QPainter;
class QRect;
class QTextBlock;
QT_END_NAMESPACE

namespace TextEditor {

class ITextEditor;
class ITextMarkable;

class TEXTEDITOR_EXPORT ITextMark
{
public:
    ITextMark(int line)
        : m_markableInterface(0),
          m_lineNumber(line),
          m_priority(NormalPriority)
    {}
    virtual ~ITextMark();

    // determine order on markers on the same line.
    enum Priority
    {
        LowPriority,
        NormalPriority,
        HighPriority // shown on top.
    };

    int lineNumber() const;
    virtual void paint(QPainter *painter, const QRect &rect) const;
    virtual void updateLineNumber(int lineNumber);
    virtual void updateBlock(const QTextBlock &block);
    virtual void removedFromEditor();
    void setIcon(const QIcon &icon);
    // call this if the icon has changed.
    void updateMarker();
    Priority priority() const;
    void setPriority(Priority prioriy);
    virtual bool visible() const;
    virtual double widthFactor() const;
    virtual bool clickable() const;
    virtual void clicked();

    ITextMarkable *markableInterface() const;
    void setMarkableInterface(ITextMarkable *markableInterface);
private:
    ITextMarkable *m_markableInterface;
    int m_lineNumber;
    QIcon m_icon;
    Priority m_priority;
};

typedef QList<ITextMark *> TextMarks;


class TEXTEDITOR_EXPORT ITextMarkable : public QObject
{
    Q_OBJECT
public:
    ITextMarkable(QObject *parent = 0) : QObject(parent) {}

    virtual TextMarks marks() const = 0;
    virtual bool addMark(ITextMark *mark) = 0;
    virtual TextMarks marksAt(int line) const = 0;
    virtual void removeMark(ITextMark *mark) = 0;
    virtual void updateMark(ITextMark *mark) = 0;
};

} // namespace TextEditor

#endif // ITEXTMARK_H