qwt_plot_zoomer.h
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00001 /* -*- mode: C++ ; c-file-style: "stroustrup" -*- ***************************** 00002 * Qwt Widget Library 00003 * Copyright (C) 1997 Josef Wilgen 00004 * Copyright (C) 2002 Uwe Rathmann 00005 * 00006 * This library is free software; you can redistribute it and/or 00007 * modify it under the terms of the Qwt License, Version 1.0 00008 *****************************************************************************/ 00009 00010 // vim: expandtab 00011 00012 #ifndef QWT_PLOT_ZOOMER_H 00013 #define QWT_PLOT_ZOOMER_H 00014 00015 #include <qglobal.h> 00016 #if QT_VERSION < 0x040000 00017 #include <qvaluestack.h> 00018 #else 00019 #include <qstack.h> 00020 #endif 00021 00022 #include "qwt_double_rect.h" 00023 #include "qwt_plot_picker.h" 00024 00049 class QWT_EXPORT QwtPlotZoomer: public QwtPlotPicker 00050 { 00051 Q_OBJECT 00052 public: 00053 explicit QwtPlotZoomer(QwtPlotCanvas *, bool doReplot = true); 00054 explicit QwtPlotZoomer(int xAxis, int yAxis, 00055 QwtPlotCanvas *, bool doReplot = true); 00056 explicit QwtPlotZoomer(int xAxis, int yAxis, int selectionFlags, 00057 DisplayMode trackerMode, QwtPlotCanvas *, 00058 bool doReplot = true); 00059 00060 virtual ~QwtPlotZoomer(); 00061 00062 virtual void setZoomBase(bool doReplot = true); 00063 virtual void setZoomBase(const QwtDoubleRect &); 00064 00065 QwtDoubleRect zoomBase() const; 00066 QwtDoubleRect zoomRect() const; 00067 00068 virtual void setAxis(int xAxis, int yAxis); 00069 00070 void setMaxStackDepth(int); 00071 int maxStackDepth() const; 00072 00073 #if QT_VERSION < 0x040000 00074 const QValueStack<QwtDoubleRect> &zoomStack() const; 00075 void setZoomStack(const QValueStack<QwtDoubleRect> &, 00076 int zoomRectIndex = -1); 00077 #else 00078 const QStack<QwtDoubleRect> &zoomStack() const; 00079 void setZoomStack(const QStack<QwtDoubleRect> &, 00080 int zoomRectIndex = -1); 00081 #endif 00082 uint zoomRectIndex() const; 00083 00084 virtual void setSelectionFlags(int); 00085 00086 public slots: 00087 void moveBy(double x, double y); 00088 virtual void move(double x, double y); 00089 00090 virtual void zoom(const QwtDoubleRect &); 00091 virtual void zoom(int up); 00092 00093 signals: 00101 void zoomed(const QwtDoubleRect &rect); 00102 00103 protected: 00104 virtual void rescale(); 00105 00106 virtual QwtDoubleSize minZoomSize() const; 00107 00108 virtual void widgetMouseReleaseEvent(QMouseEvent *); 00109 virtual void widgetKeyPressEvent(QKeyEvent *); 00110 00111 virtual void begin(); 00112 virtual bool end(bool ok = true); 00113 virtual bool accept(QwtPolygon &) const; 00114 00115 private: 00116 void init(int selectionFlags, DisplayMode trackerMode, bool doReplot); 00117 00118 class PrivateData; 00119 PrivateData *d_data; 00120 }; 00121 00122 #endif
