mitk: qxtspanslider_p.h Source File

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00001 /****************************************************************************
00002  **
00003  ** Copyright (C) Qxt Foundation. Some rights reserved.
00004  **
00005  ** This file is part of the QxtGui module of the Qxt library.
00006  **
00007  ** This library is free software; you can redistribute it and/or modify it
00008  ** under the terms of the Common Public License, version 1.0, as published
00009  ** by IBM, and/or under the terms of the GNU Lesser General Public License,
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00012  ** This file is provided "AS IS", without WARRANTIES OR CONDITIONS OF ANY
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00025 #ifndef QXTSPANSLIDER_P_H
00026 #define QXTSPANSLIDER_P_H
00027 
00028 #include <QStyle>
00029 #include <QObject>
00030 #include "qxtspanslider.h"
00031 #include "qxtpimpl.h"
00032 
00033 QT_FORWARD_DECLARE_CLASS(QStylePainter)
00034 QT_FORWARD_DECLARE_CLASS(QStyleOptionSlider)
00035 
00036 class QxtSpanSliderPrivate : public QObject, public QxtPrivate<QxtSpanSlider>
00037 {
00038     Q_OBJECT
00039 
00040 public:
00041     QXT_DECLARE_PUBLIC(QxtSpanSlider);
00042 
00043     enum SpanHandle
00044     {
00045         NoHandle,
00046         LowerHandle,
00047         UpperHandle
00048     };
00049 
00050     QxtSpanSliderPrivate();
00051     void initStyleOption(QStyleOptionSlider* option, SpanHandle handle = UpperHandle) const;
00052     int pick(const QPoint& pt) const
00053     {
00054         return qxt_p().orientation() == Qt::Horizontal ? pt.x() : pt.y();
00055     }
00056     int pixelPosToRangeValue(int pos) const;
00057     void handleMousePress(const QPoint& pos, QStyle::SubControl& control, int value, SpanHandle handle);
00058     void drawHandle(QStylePainter* painter, SpanHandle handle) const;
00059     void setupPainter(QPainter* painter, Qt::Orientation orientation, qreal x1, qreal y1, qreal x2, qreal y2) const;
00060     void drawSpan(QStylePainter* painter, const QRect& rect) const;
00061     void triggerAction(QAbstractSlider::SliderAction action, bool main);
00062     void swapControls();
00063 
00064     int lower;
00065     int upper;
00066     int lowerPos;
00067     int upperPos;
00068     int offset;
00069     int position;
00070     SpanHandle lastPressed;
00071     SpanHandle mainControl;
00072     QStyle::SubControl lowerPressed;
00073     QStyle::SubControl upperPressed;
00074     QxtSpanSlider::HandleMovementMode movement;
00075     bool firstMovement;
00076     bool blockTracking;
00077 
00078 public Q_SLOTS:
00079     void updateRange(int min, int max);
00080     void movePressedHandle();
00081 };
00082 
00083 #endif // QXTSPANSLIDER_P_H