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00010 #ifndef QWT_SCLDRAW_H
00011 #define QWT_SCLDRAW_H
00012
00013 #include <qstring.h>
00014 #include <qfont.h>
00015 #include <qrect.h>
00016 #include <qcolor.h>
00017 #include "qwt_global.h"
00018 #include "qwt_dimap.h"
00019 #include "qwt_scldiv.h"
00020
00021 class QPainter;
00022
00038 class QWT_EXPORT QwtScaleDraw: public QwtDiMap
00039 {
00040 public:
00045 enum Orientation { Bottom, Top, Left, Right, Round };
00046 enum Option { None = 0, Backbone = 1 };
00047
00048 QwtScaleDraw();
00049 virtual ~QwtScaleDraw();
00050
00051 void setScale(const QwtScaleDiv &s);
00052 void setScale(double vmin, double vmax, int maxMajIntv, int maxMinIntv,
00053 double step = 0.0, int logarithmic = 0);
00054
00055 void setOptions(int opt);
00056 int options() const;
00057
00058 void setGeometry(int xorigin, int yorigin, int length, Orientation o);
00059 int x() const;
00060 int y() const;
00061 int length() const;
00062 Orientation orientation() const;
00063
00064 void setAngleRange(double angle1, double angle2);
00065 void setLabelFormat(char f, int prec, int fieldwidth = 0);
00066 void setLabelAlignment(int align);
00067 void setLabelRotation(double rotation);
00068 void setTickLength(unsigned int minLen,
00069 unsigned int medLen, unsigned int majLen);
00070
00072 const QwtScaleDiv& scaleDiv() const { return d_scldiv; }
00073 int maxWidth(const QPen &pen, const QFontMetrics &fm) const;
00074 int maxHeight(const QPen &pen, const QFontMetrics &fm) const;
00075
00076 void minBorderDist(const QFontMetrics &fm, int &start, int &end) const;
00077 int minLabelDist(const QFontMetrics &fm) const;
00078
00079 int minHeight(const QPen &pen, const QFontMetrics &fm) const;
00080 int minWidth(const QPen &pen, const QFontMetrics &fm) const;
00081 void labelFormat(char &f, int &prec, int &fieldwidth) const;
00082 int labelAlignment() const;
00083 double labelRotation() const;
00084 void tickLength(unsigned int &minLen,
00085 unsigned int &medLen, unsigned int &majLen) const;
00086 unsigned int majTickLength() const;
00087
00088 virtual void draw(QPainter *p) const;
00089 virtual QString label(double) const;
00090
00091 protected:
00092 virtual void labelPlacement( const QFontMetrics &, double val,
00093 QPoint &pos, int &alignment, double &rotation) const;
00094 virtual int maxLabelHeight(const QFontMetrics &) const;
00095 virtual int maxLabelWidth(const QFontMetrics &) const;
00096 QRect labelBoundingRect(
00097 const QFontMetrics &, double val) const;
00098
00099 void drawTick(QPainter *p, double val, int len) const;
00100 void drawBackbone(QPainter *p) const;
00101 void drawLabel(QPainter *p, double val) const;
00102
00103 QWMatrix labelWorldMatrix(const QFontMetrics &,
00104 const QPoint &, int alignment, double rotation,
00105 const QString &) const;
00106
00107 private:
00108 int d_options;
00109
00110 QwtScaleDiv d_scldiv;
00111 Orientation d_orient;
00112
00113 int d_xorg;
00114 int d_yorg;
00115 int d_len;
00116
00117 unsigned int d_hpad;
00118 unsigned int d_vpad;
00119
00120 unsigned int d_medLen;
00121 unsigned int d_majLen;
00122 unsigned int d_minLen;
00123
00124 int d_minAngle;
00125 int d_maxAngle;
00126
00127 double d_xCenter;
00128 double d_yCenter;
00129 double d_radius;
00130
00131 char d_fmt;
00132 int d_prec;
00133 int d_fieldwidth;
00134
00135 int d_labelAlignment;
00136 double d_labelRotation;
00137 };
00138
00139 #endif