mirror of
https://github.com/GoldenCheetah/GoldenCheetah.git
synced 2026-02-14 08:38:45 +00:00
e80243eea1
Reverted the update to the QWT 6.1 code to make QwtPlot::canvas() return a QwtPlotCanvas -- it now returns QWidget. This means our local copy of Qwt is the same as the published version so we should be able to stop maintaining our own copy when Uwe pushes the multiaxis stuff with 6.2. Also fixed the LTM tooltip - the zoomer has been removed.
112 lines
2.6 KiB
C++
112 lines
2.6 KiB
C++
// code borrowed from event_filter qwt examples
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// and modified for GC LTM purposes
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#include <qapplication.h>
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#include <qevent.h>
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#include <qwhatsthis.h>
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#include <qpainter.h>
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#include <qwt_plot.h>
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#include <qwt_symbol.h>
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#include <qwt_scale_map.h>
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#include <qwt_plot_canvas.h>
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#include <qwt_plot_curve.h>
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#include "LTMCanvasPicker.h"
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#include <QDebug>
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LTMCanvasPicker::LTMCanvasPicker(QwtPlot *plot):
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QObject(plot),
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d_selectedCurve(NULL),
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d_selectedPoint(-1)
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{
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QwtPlotCanvas *canvas = static_cast<QwtPlotCanvas*>(plot->canvas());
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canvas->installEventFilter(this);
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// We want the focus, but no focus rect. The
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canvas->setFocusPolicy(Qt::StrongFocus);
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canvas->setFocusIndicator(QwtPlotCanvas::ItemFocusIndicator);
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}
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bool LTMCanvasPicker::event(QEvent *e)
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{
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if ( e->type() == QEvent::User )
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{
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//showCursor(true);
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return true;
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}
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return QObject::event(e);
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}
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bool LTMCanvasPicker::eventFilter(QObject *object, QEvent *e)
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{
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if ( object != (QObject *)plot()->canvas() )
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return false;
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switch(e->type())
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{
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default:
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QApplication::postEvent(this, new QEvent(QEvent::User));
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break;
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case QEvent::MouseButtonPress:
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select(((QMouseEvent *)e)->pos(), true);
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break;
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case QEvent::MouseMove:
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select(((QMouseEvent *)e)->pos(), false);
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break;
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}
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return QObject::eventFilter(object, e);
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}
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// Select the point at a position. If there is no point
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// deselect the selected point
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void LTMCanvasPicker::select(const QPoint &pos, bool clicked)
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{
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QwtPlotCurve *curve = NULL;
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double dist = 10e10;
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int index = -1;
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const QwtPlotItemList& itmList = plot()->itemList();
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for ( QwtPlotItemIterator it = itmList.begin();
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it != itmList.end(); ++it )
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{
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if ( (*it)->rtti() == QwtPlotItem::Rtti_PlotCurve )
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{
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QwtPlotCurve *c = (QwtPlotCurve*)(*it);
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double d = -1;
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int idx = c->closestPoint(pos, &d);
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if ( d != -1 && d < dist )
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{
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curve = c;
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index = idx;
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dist = d;
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}
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}
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}
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d_selectedCurve = NULL;
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d_selectedPoint = -1;
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if ( curve && dist < 10 ) // 10 pixels tolerance
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{
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// picked one
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d_selectedCurve = curve;
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d_selectedPoint = index;
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if (clicked)
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pointClicked(curve, index); // emit
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else
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pointHover(curve, index); // emit
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} else {
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// didn't
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if (clicked)
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pointClicked(NULL, -1); // emit
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else
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pointHover(NULL, -1); // emit
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}
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}
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