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<a name="l00224"></a>00224 <span class="keywordtype">int</span> dx = d_data->pos.x() - d_data->initialPos.x();<a name="l00225"></a>00225 <span class="keywordtype">int</span> dy = d_data->pos.y() - d_data->initialPos.y();<a name="l00226"></a>00226 <a name="l00227"></a>00227 QRect r(0, 0, d_data->pixmap.width(), d_data->pixmap.height());<a name="l00228"></a>00228 r.moveCenter(QPoint(r.center().x() + dx, r.center().y() + dy));<a name="l00229"></a>00229 <a name="l00230"></a>00230 painter.drawPixmap(r, d_data->pixmap);<a name="l00231"></a>00231 painter.end();<a name="l00232"></a>00232 <a name="l00233"></a>00233 painter.begin(<span class="keyword">this</span>);<a name="l00234"></a>00234 painter.setClipRegion(pe->region());<a name="l00235"></a>00235 painter.drawPixmap(0, 0, pm);<a name="l00236"></a>00236 }<a name="l00237"></a>00237 <a name="l00246"></a><a class="code" href="class_qwt_panner.html#06b8eea86d4dcbe361c4af41a263f2cb">00246</a> <span class="keywordtype">bool</span> <a class="code" href="class_qwt_panner.html#06b8eea86d4dcbe361c4af41a263f2cb">QwtPanner::eventFilter</a>(QObject *o, QEvent *e)<a name="l00247"></a>00247 {<a name="l00248"></a>00248 <span class="keywordflow">if</span> ( o == NULL || o != parentWidget() )<a name="l00249"></a>00249 <span class="keywordflow">return</span> <span class="keyword">false</span>;<a name="l00250"></a>00250 <a name="l00251"></a>00251 <span class="keywordflow">switch</span>(e->type())<a name="l00252"></a>00252 {<a name="l00253"></a>00253 <span class="keywordflow">case</span> QEvent::MouseButtonPress:<a name="l00254"></a>00254 {<a name="l00255"></a>00255 <a class="code" href="class_qwt_panner.html#e002958978dcc751f9edda24e5858dd9">widgetMousePressEvent</a>((QMouseEvent *)e);<a name="l00256"></a>00256 <span class="keywordflow">break</span>;<a name="l00257"></a>00257 }<a name="l00258"></a>00258 <span class="keywordflow">case</span> QEvent::MouseMove:<a name="l00259"></a>00259 {<a name="l00260"></a>00260 widgetMouseMoveEvent((QMouseEvent *)e);<a name="l00261"></a>00261 <span class="keywordflow">break</span>;<a name="l00262"></a>00262 }<a name="l00263"></a>00263 <span class="keywordflow">case</span> QEvent::MouseButtonRelease:<a name="l00264"></a>00264 {<a name="l00265"></a>00265 widgetMouseReleaseEvent((QMouseEvent *)e);<a name="l00266"></a>00266 <span class="keywordflow">break</span>;<a name="l00267"></a>00267 }<a name="l00268"></a>00268 <span class="keywordflow">case</span> QEvent::KeyPress:<a name="l00269"></a>00269 {<a name="l00270"></a>00270 widgetKeyPressEvent((QKeyEvent *)e);<a name="l00271"></a>00271 <span class="keywordflow">break</span>;<a name="l00272"></a>00272 }<a name="l00273"></a>00273 <span class="keywordflow">case</span> QEvent::KeyRelease:<a name="l00274"></a>00274 {<a name="l00275"></a>00275 widgetKeyReleaseEvent((QKeyEvent *)e);<a name="l00276"></a>00276 <span class="keywordflow">break</span>;<a name="l00277"></a>00277 }<a name="l00278"></a>00278 <span class="keywordflow">default</span>:;<a name="l00279"></a>00279 }<a name="l00280"></a>00280 <a name="l00281"></a>00281 <span class="keywordflow">return</span> <span class="keyword">false</span>;<a name="l00282"></a>00282 }<a name="l00283"></a>00283 <a name="l00291"></a><a class="code" href="class_qwt_panner.html#e002958978dcc751f9edda24e5858dd9">00291</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_panner.html#e002958978dcc751f9edda24e5858dd9">QwtPanner::widgetMousePressEvent</a>(QMouseEvent *me)<a name="l00292"></a>00292 {<a name="l00293"></a>00293 <span class="keywordflow">if</span> ( me->button() != d_data->button )<a name="l00294"></a>00294 <span class="keywordflow">return</span>;<a name="l00295"></a>00295 <a name="l00296"></a>00296 QWidget *w = parentWidget();<a name="l00297"></a>00297 <span class="keywordflow">if</span> ( w == NULL )<a name="l00298"></a>00298 <span class="keywordflow">return</span>;<a name="l00299"></a>00299 <a name="l00300"></a>00300 <span class="preprocessor">#if QT_VERSION < 0x040000</span><a name="l00301"></a>00301 <span class="preprocessor"></span> <span class="keywordflow">if</span> ( (me->state() & Qt::KeyButtonMask) !=<a name="l00302"></a>00302 (d_data->buttonState & Qt::KeyButtonMask) )<a name="l00303"></a>00303 #<span class="keywordflow">else</span><a name="l00304"></a>00304 <span class="keywordflow">if</span> ( (me->modifiers() & Qt::KeyboardModifierMask) !=<a name="l00305"></a>00305 (<span class="keywordtype">int</span>)(d_data->buttonState & Qt::KeyboardModifierMask) )<a name="l00306"></a>00306 <span class="preprocessor">#endif</span><a name="l00307"></a>00307 <span class="preprocessor"></span> {<a name="l00308"></a>00308 <span class="keywordflow">return</span>;<a name="l00309"></a>00309 }<a name="l00310"></a>00310 <a name="l00311"></a>00311 <span class="preprocessor">#ifndef QT_NO_CURSOR</span><a name="l00312"></a>00312 <span class="preprocessor"></span> showCursor(<span class="keyword">true</span>);<a name="l00313"></a>00313 <span class="preprocessor">#endif</span><a name="l00314"></a>00314 <span class="preprocessor"></span><a name="l00315"></a>00315 d_data->initialPos = d_data->pos = me->pos();<a name="l00316"></a>00316 <a name="l00317"></a>00317 QRect cr = parentWidget()->rect();<a name="l00318"></a>00318 <span class="keywordflow">if</span> ( parentWidget()->inherits(<span class="stringliteral">"QFrame"</span>) )<a name="l00319"></a>00319 {<a name="l00320"></a>00320 <span class="keyword">const</span> QFrame* frame = (QFrame*)parentWidget();<a name="l00321"></a>00321 cr = frame->contentsRect();<a name="l00322"></a>00322 }<a name="l00323"></a>00323 setGeometry(cr);<a name="l00324"></a>00324 d_data->pixmap = QPixmap::grabWidget(parentWidget(),<a name="l00325"></a>00325 cr.x(), cr.y(), cr.width(), cr.height());<a name="l00326"></a>00326 show();<a name="l00327"></a>00327 }<a name="l00328"></a>00328 <a name="l00336"></a><a class="code" href="class_qwt_panner.html#6545bc6e25018253c59fc27a48eb948f">00336</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_panner.html#6545bc6e25018253c59fc27a48eb948f">QwtPanner::widgetMouseMoveEvent</a>(QMouseEvent *me)<a name="l00337"></a>00337 {<a name="l00338"></a>00338 <span class="keywordflow">if</span> ( isVisible() && rect().contains(me->pos()) )<a name="l00339"></a>00339 {<a name="l00340"></a>00340 d_data->pos = me->pos();<a name="l00341"></a>00341 update();<a name="l00342"></a>00342 <a name="l00343"></a>00343 emit <a class="code" href="class_qwt_panner.html#a45ae2f4d6d20a83783898dd86d0b595">moved</a>(d_data->pos.x() - d_data->initialPos.x(), <a name="l00344"></a>00344 d_data->pos.y() - d_data->initialPos.y());<a name="l00345"></a>00345 }<a name="l00346"></a>00346 }<a name="l00347"></a>00347 <a name="l00353"></a><a class="code" href="class_qwt_panner.html#b2da1e24b1456b223eaa826d8e0a3a81">00353</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_panner.html#b2da1e24b1456b223eaa826d8e0a3a81">QwtPanner::widgetMouseReleaseEvent</a>(QMouseEvent *me)<a name="l00354"></a>00354 {<a name="l00355"></a>00355 <span class="keywordflow">if</span> ( isVisible() )<a name="l00356"></a>00356 {<a name="l00357"></a>00357 hide();<a name="l00358"></a>00358 <span class="preprocessor">#ifndef QT_NO_CURSOR</span><a name="l00359"></a>00359 <span class="preprocessor"></span> showCursor(<span class="keyword">false</span>);<a name="l00360"></a>00360 <span class="preprocessor">#endif</span><a name="l00361"></a>00361 <span class="preprocessor"></span><a name="l00362"></a>00362 d_data->pixmap = QPixmap();<a name="l00363"></a>00363 d_data->pos = me->pos();<a name="l00364"></a>00364 <a name="l00365"></a>00365 <span class="keywordflow">if</span> ( d_data->pos != d_data->initialPos )<a name="l00366"></a>00366 {<a name="l00367"></a>00367 emit <a class="code" href="class_qwt_panner.html#e9ce78e6f9ae73317af29b2dc5df7372">panned</a>(d_data->pos.x() - d_data->initialPos.x(), <a name="l00368"></a>00368 d_data->pos.y() - d_data->initialPos.y());<a name="l00369"></a>00369 }<a name="l00370"></a>00370 }<a name="l00371"></a>00371 }<a name="l00372"></a>00372 <a name="l00379"></a><a class="code" href="class_qwt_panner.html#7ed4e89f6c52b841e20ad497af4b4ebc">00379</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_panner.html#7ed4e89f6c52b841e20ad497af4b4ebc">QwtPanner::widgetKeyPressEvent</a>(QKeyEvent *ke)<a name="l00380"></a>00380 {<a name="l00381"></a>00381 <span class="keywordflow">if</span> ( ke->key() == d_data->abortKey )<a name="l00382"></a>00382 {<a name="l00383"></a>00383 <span class="keyword">const</span> <span class="keywordtype">bool</span> matched =<a name="l00384"></a>00384 #<span class="keywordflow">if</span> QT_VERSION < 0x040000<a name="l00385"></a>00385 (ke->state() & Qt::KeyButtonMask) ==<a name="l00386"></a>00386 (d_data->abortKeyState & Qt::KeyButtonMask);<a name="l00387"></a>00387 <span class="preprocessor">#else</span><a name="l00388"></a>00388 <span class="preprocessor"></span> (ke->modifiers() & Qt::KeyboardModifierMask) ==<a name="l00389"></a>00389 (<span class="keywordtype">int</span>)(d_data->abortKeyState & Qt::KeyboardModifierMask);<a name="l00390"></a>00390 <span class="preprocessor">#endif</span><a name="l00391"></a>00391 <span class="preprocessor"></span> <span class="keywordflow">if</span> ( matched )<a name="l00392"></a>00392 {<a name="l00393"></a>00393 hide();<a name="l00394"></a>00394 <span class="preprocessor">#ifndef QT_NO_CURSOR</span><a name="l00395"></a>00395 <span class="preprocessor"></span> showCursor(<span class="keyword">false</span>);<a name="l00396"></a>00396 <span class="preprocessor">#endif</span><a name="l00397"></a>00397 <span class="preprocessor"></span> d_data->pixmap = QPixmap();<a name="l00398"></a>00398 }<a name="l00399"></a>00399 }<a name="l00400"></a>00400 }<a name="l00401"></a>00401 <a name="l00408"></a><a class="code" href="class_qwt_panner.html#8bd447df4a30299bbc8e6b6d3e2e2f9f">00408</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_panner.html#8bd447df4a30299bbc8e6b6d3e2e2f9f">QwtPanner::widgetKeyReleaseEvent</a>(QKeyEvent *)<a name="l00409"></a>00409 {<a name="l00410"></a>00410 }<a name="l00411"></a>00411 <a name="l00412"></a>00412 <span class="preprocessor">#ifndef QT_NO_CURSOR</span><a name="l00413"></a>00413 <span class="preprocessor"></span><span class="keywordtype">void</span> QwtPanner::showCursor(<span class="keywordtype">bool</span> on)<a name="l00414"></a>00414 {<a name="l00415"></a>00415 QWidget *w = parentWidget();<a name="l00416"></a>00416 <span class="keywordflow">if</span> ( w == NULL || d_data->cursor == NULL )<a name="l00417"></a>00417 <span class="keywordflow">return</span>;<a name="l00418"></a>00418 <a name="l00419"></a>00419 <span class="keywordflow">if</span> ( on )<a name="l00420"></a>00420 {<a name="l00421"></a>00421 <span class="preprocessor">#if QT_VERSION < 0x040000</span><a name="l00422"></a>00422 <span class="preprocessor"></span> <span class="keywordflow">if</span> ( w->testWState(WState_OwnCursor) )<a name="l00423"></a>00423 #<span class="keywordflow">else</span><a name="l00424"></a>00424 <span class="keywordflow">if</span> ( w->testAttribute(Qt::WA_SetCursor) )<a name="l00425"></a>00425 #endif<a name="l00426"></a>00426 {<a name="l00427"></a>00427 <span class="keyword">delete</span> d_data->restoreCursor;<a name="l00428"></a>00428 d_data->restoreCursor = <span class="keyword">new</span> QCursor(w->cursor());<a name="l00429"></a>00429 }<a name="l00430"></a>00430 w->setCursor(*d_data->cursor);<a name="l00431"></a>00431 }<a name="l00432"></a>00432 <span class="keywordflow">else</span><a name="l00433"></a>00433 {<a name="l00434"></a>00434 <span class="keywordflow">if</span> ( d_data->restoreCursor ) <a name="l00435"></a>00435 {<a name="l00436"></a>00436 w->setCursor(*d_data->restoreCursor);<a name="l00437"></a>00437 <span class="keyword">delete</span> d_data->restoreCursor;<a name="l00438"></a>00438 d_data->restoreCursor = NULL;<a name="l00439"></a>00439 }<a name="l00440"></a>00440 <span class="keywordflow">else</span><a name="l00441"></a>00441 w->unsetCursor();<a name="l00442"></a>00442 }<a name="l00443"></a>00443 }<a name="l00444"></a>00444 <span class="preprocessor">#endif</span></pre></div><hr size="1"><address style="align: right;"><small>Generated on Mon Feb 26 21:22:37 2007 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> 1.4.6 </small></address></body></html>⌨️ 快捷键说明
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