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# qwt_compass_rose.h

    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 #ifndef QWT_COMPASS_ROSE_H
    00011 #define QWT_COMPASS_ROSE_H 1
    00012
    00013 #include <qpalette.h>
    00014 #include "qwt_global.h"
    00015
    00016 class QPainter;
    00017
    00021 class QWT_EXPORT QwtCompassRose
    00022 {
    00023 public:
    00024     virtual ~QwtCompassRose() {};
    00025
    00027     virtual void setPalette(const QPalette &p) { d_palette = p; }
    00028
    00030     const QPalette &palette() const { return d_palette; }
    00031
    00041     virtual void draw(QPainter *painter, const QPoint &center,
    00042         int radius, double north,
    00043         QPalette::ColorGroup colorGroup = QPalette::Active) const = 0;
    00044
    00045 private:
    00046     QPalette d_palette;
    00047 };
    00048
    00052 class QWT_EXPORT QwtSimpleCompassRose: public QwtCompassRose
    00053 {
    00054 public:
    00055     QwtSimpleCompassRose(int numThorns = 8, int numThornLevels = -1);
    00056
    00057     void setWidth(double w);
    00058
    00060     double width() const { return d_width; }
    00061
    00062     void setNumThorns(int count);
    00063     int numThorns() const;
    00064
    00065     void setNumThornLevels(int count);
    00066     int numThornLevels() const;
    00067
    00068     void setShrinkFactor(double factor) { d_shrinkFactor = factor; }
    00069     double shrinkFactor() const { return d_shrinkFactor; }
    00070
    00071     virtual void draw(QPainter *, const QPoint &center, int radius,
    00072         double north, QPalette::ColorGroup = QPalette::Active) const;
    00073
    00074     static void drawRose(QPainter *,
    00075 #if QT_VERSION < 0x040000
    00076         const QColorGroup &,
    00077 #else
    00078         const QPalette &,
    00079 #endif
    00080         const QPoint &center, int radius, double origin, double width,
    00081         int numThorns, int numThornLevels, double shrinkFactor);
    00082
    00083 private:
    00084     double d_width;
    00085     int d_numThorns;
    00086     int d_numThornLevels;
    00087     double d_shrinkFactor;
    00088 };
    00089
    00090 #endif // QWT_COMPASS_ROSE_H