Qwt User's Guide 6.1.0

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qwt_plot_item.h
1 /* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
2 * Qwt Widget Library
3 * Copyright (C) 1997 Josef Wilgen
4 * Copyright (C) 2002 Uwe Rathmann
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the Qwt License, Version 1.0
8 *****************************************************************************/
9
10 #ifndef QWT_PLOT_ITEM_H
11 #define QWT_PLOT_ITEM_H
12
13 #include "qwt_global.h"
14 #include "qwt_text.h"
15 #include "qwt_legend_data.h"
16 #include "qwt_graphic.h"
17 #include <qrect.h>
18 #include <qlist.h>
19 #include <qmetatype.h>
20
21 class QPainter;
22 class QwtScaleMap;
23 class QwtScaleDiv;
24 class QwtPlot;
25
64 class QWT_EXPORT QwtPlotItem
65 {
66 public:
73 enum RttiValues
74 {
76 Rtti_PlotItem = 0,
77
79 Rtti_PlotGrid,
80
82 Rtti_PlotScale,
83
85 Rtti_PlotLegend,
86
88 Rtti_PlotMarker,
89
91 Rtti_PlotCurve,
92
94 Rtti_PlotSpectroCurve,
95
97 Rtti_PlotIntervalCurve,
98
100 Rtti_PlotHistogram,
101
103 Rtti_PlotSpectrogram,
104
106 Rtti_PlotSVG,
107
109 Rtti_PlotTradingCurve,
110
112 Rtti_PlotBarChart,
113
115 Rtti_PlotMultiBarChart,
116
118 Rtti_PlotShape,
119
121 Rtti_PlotTextLabel,
122
124 Rtti_PlotZone,
125
130 Rtti_PlotUserItem = 1000
131 };
132
142 enum ItemAttribute
143 {
145 Legend = 0x01,
146
152 AutoScale = 0x02,
153
159 Margins = 0x04
160 };
161
163 typedef QFlags<ItemAttribute> ItemAttributes;
164
175 enum ItemInterest
176 {
181 ScaleInterest = 0x01,
182
193 LegendInterest = 0x02
194 };
195
197 typedef QFlags<ItemInterest> ItemInterests;
198
200 enum RenderHint
201 {
203 RenderAntialiased = 0x1
204 };
205
207 typedef QFlags<RenderHint> RenderHints;
208
209 explicit QwtPlotItem( const QwtText &title = QwtText() );
210 virtual ~QwtPlotItem();
211
212 void attach( QwtPlot *plot );
213 void detach();
214
215 QwtPlot *plot() const;
216
217 void setTitle( const QString &title );
218 void setTitle( const QwtText &title );
219 const QwtText &title() const;
220
221 virtual int rtti() const;
222
223 void setItemAttribute( ItemAttribute, bool on = true );
224 bool testItemAttribute( ItemAttribute ) const;
225
226 void setItemInterest( ItemInterest, bool on = true );
227 bool testItemInterest( ItemInterest ) const;
228
229 void setRenderHint( RenderHint, bool on = true );
230 bool testRenderHint( RenderHint ) const;
231
232 void setRenderThreadCount( uint numThreads );
233 uint renderThreadCount() const;
234
235 void setLegendIconSize( const QSize & );
236 QSize legendIconSize() const;
237
238 double z() const;
239 void setZ( double z );
240
241 void show();
242 void hide();
243 virtual void setVisible( bool );
244 bool isVisible () const;
245
246 void setAxes( int xAxis, int yAxis );
247
248 void setXAxis( int axis );
249 int xAxis() const;
250
251 void setYAxis( int axis );
252 int yAxis() const;
253
254 virtual void itemChanged();
255 virtual void legendChanged();
256
265 virtual void draw( QPainter *painter,
266 const QwtScaleMap &xMap, const QwtScaleMap &yMap,
267 const QRectF &canvasRect ) const = 0;
268
269 virtual QRectF boundingRect() const;
270
271 virtual void getCanvasMarginHint(
272 const QwtScaleMap &xMap, const QwtScaleMap &yMap,
273 const QRectF &canvasSize,
274 double &left, double &top, double &right, double &bottom) const;
275
276 virtual void updateScaleDiv(
277 const QwtScaleDiv&, const QwtScaleDiv& );
278
279 virtual void updateLegend( const QwtPlotItem *,
280 const QList<QwtLegendData> & );
281
282 QRectF scaleRect( const QwtScaleMap &, const QwtScaleMap & ) const;
283 QRectF paintRect( const QwtScaleMap &, const QwtScaleMap & ) const;
284
285 virtual QList<QwtLegendData> legendData() const;
286
287 virtual QwtGraphic legendIcon( int index, const QSizeF & ) const;
288
289 protected:
290 QwtGraphic defaultIcon( const QBrush &, const QSizeF & ) const;
291
292 private:
293 // Disabled copy constructor and operator=
294 QwtPlotItem( const QwtPlotItem & );
295 QwtPlotItem &operator=( const QwtPlotItem & );
296
297 class PrivateData;
298 PrivateData *d_data;
299 };
300
301 Q_DECLARE_OPERATORS_FOR_FLAGS( QwtPlotItem::ItemAttributes )
302 Q_DECLARE_OPERATORS_FOR_FLAGS( QwtPlotItem::ItemInterests )
303 Q_DECLARE_OPERATORS_FOR_FLAGS( QwtPlotItem::RenderHints )
304
305 Q_DECLARE_METATYPE( QwtPlotItem * )
306
307 #endif