Qwt User's Guide: qwt_compass_rose.h Source File

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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
    00026     virtual void setPalette(const QPalette &p) { d_palette = p; }
    00027     const QPalette &palette() const { return d_palette; }
    00028
    00038     virtual void draw(QPainter *painter, const QPoint &center,
    00039         int radius, double north,
    00040         QPalette::ColorGroup colorGroup = QPalette::Active) const = 0;
    00041
    00042 private:
    00043     QPalette d_palette;
    00044 };
    00045
    00049 class QWT_EXPORT QwtSimpleCompassRose: public QwtCompassRose
    00050 {
    00051 public:
    00052     QwtSimpleCompassRose(int numThorns = 8, int numThornLevels = -1);
    00053
    00054     void setWidth(double w);
    00055     double width() const { return d_width; }
    00056
    00057     void setNumThorns(int count);
    00058     int numThorns() const;
    00059
    00060     void setNumThornLevels(int count);
    00061     int numThornLevels() const;
    00062
    00063     void setShrinkFactor(double factor) { d_shrinkFactor = factor; }
    00064     double shrinkFactor() const { return d_shrinkFactor; }
    00065
    00066     virtual void draw(QPainter *, const QPoint &center, int radius,
    00067         double north, QPalette::ColorGroup = QPalette::Active) const;
    00068
    00069     static void drawRose(QPainter *,
    00070 #if QT_VERSION < 0x040000
    00071         const QColorGroup &,
    00072 #else
    00073         const QPalette &,
    00074 #endif
    00075         const QPoint &center, int radius, double origin, double width,
    00076         int numThorns, int numThornLevels, double shrinkFactor);
    00077
    00078 private:
    00079     double d_width;
    00080     int d_numThorns;
    00081     int d_numThornLevels;
    00082     double d_shrinkFactor;
    00083 };
    00084
    00085 #endif // QWT_COMPASS_ROSE_H