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98 lines
4.2 KiB
98 lines
4.2 KiB
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/doc/tutorial2.doc:7 -->
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<html>
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<head>
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<title>chart/canvasview.cpp Example File</title>
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<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>chart/canvasview.cpp Example File</h1>
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<pre>#include "canvasview.h"
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#include "chartform.h"
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#include <<a href="qcursor-h.html">ntqcursor.h</a>>
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#include <<a href="qpoint-h.html">ntqpoint.h</a>>
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#include <<a href="qpopupmenu-h.html">ntqpopupmenu.h</a>>
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#include <<a href="qstatusbar-h.html">ntqstatusbar.h</a>>
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void CanvasView::<a href="ntqscrollview.html#contentsContextMenuEvent">contentsContextMenuEvent</a>( <a href="qcontextmenuevent.html">TQContextMenuEvent</a> * )
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{
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((ChartForm*)<a href="ntqobject.html#parent">parent</a>())->optionsMenu->exec( TQCursor::<a href="ntqcursor.html#pos">pos</a>() );
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}
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void CanvasView::<a href="ntqscrollview.html#viewportResizeEvent">viewportResizeEvent</a>( <a href="qresizeevent.html">TQResizeEvent</a> *e )
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{
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<a href="qcanvasview.html#canvas">canvas</a>()->resize( e-><a href="qresizeevent.html#size">size</a>().width(), e-><a href="qresizeevent.html#size">size</a>().height() );
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((ChartForm*)<a href="ntqobject.html#parent">parent</a>())->drawElements();
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}
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void CanvasView::<a href="ntqscrollview.html#contentsMousePressEvent">contentsMousePressEvent</a>( <a href="qmouseevent.html">TQMouseEvent</a> *e )
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{
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<a href="qcanvasitemlist.html">TQCanvasItemList</a> list = <a href="qcanvasview.html#canvas">canvas</a>()->collisions( e-><a href="qmouseevent.html#pos">pos</a>() );
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for ( TQCanvasItemList::iterator it = list.<a href="ntqvaluelist.html#begin">begin</a>(); it != list.<a href="ntqvaluelist.html#end">end</a>(); ++it )
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if ( (*it)->rtti() == CanvasText::CANVAS_TEXT ) {
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m_movingItem = *it;
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m_pos = e-><a href="qmouseevent.html#pos">pos</a>();
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return;
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}
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m_movingItem = 0;
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}
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void CanvasView::<a href="ntqscrollview.html#contentsMouseMoveEvent">contentsMouseMoveEvent</a>( <a href="qmouseevent.html">TQMouseEvent</a> *e )
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{
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if ( m_movingItem ) {
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<a href="ntqpoint.html">TQPoint</a> offset = e-><a href="qmouseevent.html#pos">pos</a>() - m_pos;
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m_movingItem->moveBy( offset.<a href="ntqpoint.html#x">x</a>(), offset.<a href="ntqpoint.html#y">y</a>() );
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m_pos = e-><a href="qmouseevent.html#pos">pos</a>();
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ChartForm *form = (ChartForm*)<a href="ntqobject.html#parent">parent</a>();
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form->setChanged( TRUE );
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int chartType = form->chartType();
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CanvasText *item = (CanvasText*)m_movingItem;
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int i = item->index();
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(*m_elements)[i].setProX( chartType, item->x() / canvas()->width() );
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(*m_elements)[i].setProY( chartType, item->y() / canvas()->height() );
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<a href="qcanvasview.html#canvas">canvas</a>()->update();
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}
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}
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</pre><!-- eof -->
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<p><address><hr><div align=center>
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<table width=100% cellspacing=0 border=0><tr>
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<td>Copyright © 2007
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<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
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<td align=right><div align=right>TQt 3.3.8</div>
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</table></div></address></body>
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