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<h1>qwt_picker.h</h1><pre class="fragment"><div>00001 <span class="comment">/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************</span>
00002 <span class="comment"> * Qwt Widget Library</span>
00003 <span class="comment"> * Copyright (C) 1997 Josef Wilgen</span>
00004 <span class="comment"> * Copyright (C) 2002 Uwe Rathmann</span>
00005 <span class="comment"> * </span>
00006 <span class="comment"> * This library is free software; you can redistribute it and/or</span>
00007 <span class="comment"> * modify it under the terms of the Qwt License, Version 1.0</span>
00008 <span class="comment"> *****************************************************************************/</span>
00009
00010 <span class="preprocessor">#ifndef QWT_PICKER</span>
00011 <span class="preprocessor"></span><span class="preprocessor">#define QWT_PICKER 1</span>
00012 <span class="preprocessor"></span>
00013 <span class="preprocessor">#include <qobject.h></span>
00014 <span class="preprocessor">#include <qpen.h></span>
00015 <span class="preprocessor">#include <qfont.h></span>
00016 <span class="preprocessor">#include <qrect.h></span>
00017 <span class="preprocessor">#include <qpointarray.h></span>
00018 <span class="preprocessor">#include "qwt_event_pattern.h"</span>
00019 <span class="preprocessor">#include "qwt_global.h"</span>
00020
00021 <span class="keyword">class </span>QWidget;
00022 <span class="keyword">class </span>QMouseEvent;
00023 <span class="keyword">class </span>QWheelEvent;
00024 <span class="keyword">class </span>QKeyEvent;
00025 <span class="keyword">class </span><a class="code" href="class_qwt_picker_machine.html">QwtPickerMachine</a>;
00026
<a name="l00079"></a><a class="code" href="class_qwt_picker.html">00079</a> <span class="keyword">class </span>QWT_EXPORT QwtPicker: <span class="keyword">public</span> QObject, <span class="keyword">public</span> <a class="code" href="class_qwt_event_pattern.html">QwtEventPattern</a>
00080 {
00081 Q_OBJECT
00082
00083 Q_ENUMS(RubberBand)
00084 Q_ENUMS(DisplayMode)
00085 Q_ENUMS(ResizeMode)
00086
00087 Q_PROPERTY(<span class="keywordtype">int</span> selectionFlags READ selectionFlags WRITE setSelectionFlags)
00088 Q_PROPERTY(DisplayMode cursorLabelMode
00089 READ cursorLabelMode WRITE setCursorLabelMode)
00090 Q_PROPERTY(QFont cursorLabelFont
00091 READ cursorLabelFont WRITE setCursorLabelFont)
00092 Q_PROPERTY(RubberBand rubberBand READ rubberBand WRITE setRubberBand)
00093 Q_PROPERTY(ResizeMode resizeMode READ resizeMode WRITE setResizeMode)
00094 Q_PROPERTY(<span class="keywordtype">bool</span> isEnabled READ isEnabled WRITE setEnabled)
00095
00096 #<span class="keywordflow">if</span> QT_VERSION >= 300
00097 <span class="comment">// Unfortunately moc is not aware of #ifdefs. To enable the QPen</span>
00098 <span class="comment">// attributes as properties uncomment the following lines.</span>
00099
00100 <span class="comment">//Q_PROPERTY(QPen cursorLabelPen READ cursorLabelPen WRITE setCursorLabelPen)</span>
00101 <span class="comment">//Q_PROPERTY(QPen rubberBandPen READ rubberBandPen WRITE setRubberBandPen)</span>
00102 <span class="preprocessor">#endif</span>
00103 <span class="preprocessor"></span>
00104 <span class="keyword">public</span>:
<a name="l00123"></a><a class="code" href="class_qwt_picker.html#w22">00123</a> <span class="keyword">enum</span> SelectionType
00124 {
00125 NoSelection = 0,
00126 PointSelection = 1,
00127 RectSelection = 2,
00128 PolygonSelection = 4
00129 };
00130
<a name="l00149"></a><a class="code" href="class_qwt_picker.html#w23">00149</a> <span class="keyword">enum</span> RectSelectionType
00150 {
00151 CornerToCorner = 64,
00152 CenterToCorner = 128,
00153 CenterToRadius = 256
00154 };
00155
<a name="l00163"></a><a class="code" href="class_qwt_picker.html#w24">00163</a> <span class="keyword">enum</span> SelectionMode
00164 {
00165 ClickSelection = 1024,
00166 DragSelection = 2048
00167 };
00168
<a name="l00193"></a><a class="code" href="class_qwt_picker.html#w25">00193</a> <span class="keyword">enum</span> RubberBand
00194 {
00195 NoRubberBand = 0,
00196
00197 <span class="comment">// Point</span>
00198 HLineRubberBand,
00199 VLineRubberBand,
00200 CrossRubberBand,
00201
00202 <span class="comment">// Rect</span>
00203 RectRubberBand,
00204 EllipseRubberBand,
00205
00206 <span class="comment">// Polygon</span>
00207 PolygonRubberBand,
00208
00209 UserRubberBand = 100
00210 };
00211
<a name="l00223"></a><a class="code" href="class_qwt_picker.html#w26">00223</a> <span class="keyword">enum</span> DisplayMode
00224 {
00225 AlwaysOff,
00226 AlwaysOn,
00227 ActiveOnly
00228 };
00229
<a name="l00242"></a><a class="code" href="class_qwt_picker.html#w27">00242</a> <span class="keyword">enum</span> ResizeMode
00243 {
00244 Stretch,
00245 KeepSize
00246 };
00247
00248 QwtPicker(QWidget *, <span class="keyword">const</span> <span class="keywordtype">char</span> *name = 0);
00249 QwtPicker(<span class="keywordtype">int</span> selectionFlags, RubberBand rubberBand,
00250 DisplayMode cursorLabelMode, QWidget *, <span class="keyword">const</span> <span class="keywordtype">char</span> *name = 0);
00251
00252 <span class="keyword">virtual</span> ~QwtPicker();
00253
00254 <span class="keyword">virtual</span> <span class="keywordtype">void</span> setSelectionFlags(<span class="keywordtype">int</span>);
00255 <span class="keywordtype">int</span> selectionFlags() const;
00256
00257 virtual <span class="keywordtype">void</span> setRubberBand(RubberBand);
00258 RubberBand rubberBand() const;
00259
00260 virtual <span class="keywordtype">void</span> setCursorLabelMode(DisplayMode);
00261 DisplayMode cursorLabelMode() const;
00262
00263 virtual <span class="keywordtype">void</span> setResizeMode(ResizeMode);
00264 ResizeMode resizeMode() const;
00265
00266 virtual <span class="keywordtype">void</span> setRubberBandPen(const QPen &);
00267 QPen rubberBandPen() const;
00268
00269 virtual <span class="keywordtype">void</span> setCursorLabelPen(const QPen &);
00270 QPen cursorLabelPen() const;
00271
00272 virtual <span class="keywordtype">void</span> setCursorLabelFont(const QFont &);
00273 QFont cursorLabelFont() const;
00274
00275 <span class="keywordtype">bool</span> isEnabled() const;
00276 virtual <span class="keywordtype">void</span> setEnabled(<span class="keywordtype">bool</span>);
00277
00278 <span class="keywordtype">bool</span> isActive() const;
00279
00280 virtual <span class="keywordtype">bool</span> eventFilter(QObject *, QEvent *);
00281
00282 QWidget *parentWidget();
00283 const QWidget *parentWidget() const;
00284
00285 virtual QRect pickRect() const;
00286 const QPointArray &selection() const;
00287
00288 virtual <span class="keywordtype">bool</span> event(QEvent *);
00289
00290 signals:
00297 <span class="keywordtype">void</span> selected(const QPointArray &pa);
00298
00305 <span class="keywordtype">void</span> appended(const QPoint &pos);
00306
00314 <span class="keywordtype">void</span> moved(const QPoint &pos);
00315
00323 <span class="keywordtype">void</span> changed(const QPointArray &pa);
00324
00325 protected:
00334 virtual <span class="keywordtype">bool</span> accept(QPointArray &selection) const;
00335
00336 virtual <span class="keywordtype">void</span> transition(const QEvent *);
00337
00338 virtual <span class="keywordtype">void</span> begin();
00339 virtual <span class="keywordtype">void</span> append(const QPoint &);
00340 virtual <span class="keywordtype">void</span> move(const QPoint &);
00341 virtual <span class="keywordtype">bool</span> end(<span class="keywordtype">bool</span> ok = TRUE);
00342
00343 virtual <span class="keywordtype">void</span> widgetMousePressEvent(QMouseEvent *);
00344 virtual <span class="keywordtype">void</span> widgetMouseReleaseEvent(QMouseEvent *);
00345 virtual <span class="keywordtype">void</span> widgetMouseDoubleClickEvent(QMouseEvent *);
00346 virtual <span class="keywordtype">void</span> widgetMouseMoveEvent(QMouseEvent *);
00347 virtual <span class="keywordtype">void</span> widgetWheelEvent(QWheelEvent *);
00348 virtual <span class="keywordtype">void</span> widgetKeyPressEvent(QKeyEvent *);
00349 virtual <span class="keywordtype">void</span> widgetKeyReleaseEvent(QKeyEvent *);
00350
00351 virtual <span class="keywordtype">void</span> drawRubberBand(const QRect &clipRect = QRect()) const;
00352 virtual <span class="keywordtype">void</span> drawRubberBand(QPainter *,
00353 const QRect &rect, const QPointArray &) const;
00354
00355 virtual <span class="keywordtype">void</span> drawCursorLabel(const QRect &clipRect = QRect()) const;
00356 virtual <span class="keywordtype">void</span> drawCursorLabel(QPainter *, const QRect &rect,
00357 const QPoint &, const QPointArray &) const;
00358
00359 virtual <span class="keywordtype">void</span> stretchSelection(const QSize &oldSize,
00360 const QSize &newSize);
00361
00362 virtual QString cursorLabel(const QPoint &pos) const;
00363
00364 virtual <a class="code" href="class_qwt_picker_machine.html">QwtPickerMachine</a> *stateMachine(<span class="keywordtype">int</span>) const;
00365
00366 <span class="keywordtype">void</span> repaint(const QRect &rect = QRect());
00367
00368 private:
00369 <span class="keywordtype">void</span> init(QWidget *, <span class="keywordtype">int</span> selectionFlags, RubberBand rubberBand,
00370 DisplayMode cursorLabelMode);
00371
00372 <span class="keywordtype">void</span> setStateMachine(<a class="code" href="class_qwt_picker_machine.html">QwtPickerMachine</a> *);
00373 <span class="keywordtype">void</span> setMouseTracking(<span class="keywordtype">bool</span>);
00374
00375 <span class="keywordtype">bool</span> d_enabled;
00376
00377 QwtPickerMachine *d_stateMachine;
00378
00379 <span class="keywordtype">int</span> d_selectionFlags;
00380 ResizeMode d_resizeMode;
00381
00382 RubberBand d_rubberBand;
00383 QPen d_rubberBandPen;
00384
00385 DisplayMode d_cursorLabelMode;
00386 QPen d_cursorLabelPen;
00387 QFont d_cursorLabelFont;
00388
00389 QPointArray d_selection;
00390 <span class="keywordtype">bool</span> d_isActive;
00391 QPoint d_labelPosition;
00392
00393 <span class="keywordtype">bool</span> d_mouseTracking; <span class="comment">// used to save previous value</span>
00394 };
00395
00396 #endif
</div></pre><hr size="1"><address style="align: right;"><small>Generated on Tue Nov 16 21:12:20 2004 for Qwt User's Guide by
<a href="http://www.doxygen.org/index.html">
<img src="doxygen.png" alt="doxygen" align="middle" border=0 ></a> 1.3.8 </small></address>
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