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Diffstat (limited to 'src/gui/probepositioner.cpp')
| -rw-r--r-- | src/gui/probepositioner.cpp | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/src/gui/probepositioner.cpp b/src/gui/probepositioner.cpp new file mode 100644 index 0000000..1ea2606 --- /dev/null +++ b/src/gui/probepositioner.cpp @@ -0,0 +1,210 @@ +/*************************************************************************** + * Copyright (C) 2005 by David Saxton * + * [email protected] * + * * + * This program is free software; you can redistribute it and/or modify * + * it under the terms of the GNU General Public License as published by * + * the Free Software Foundation; either version 2 of the License, or * + * (at your option) any later version. * + ***************************************************************************/ + +#include "oscilloscope.h" +#include "oscilloscopedata.h" +#include "oscilloscopeview.h" +#include "probepositioner.h" + +#include <qevent.h> +#include <qpainter.h> +#include <qpointarray.h> + +#include <algorithm> +#include <cmath> + +ProbePositioner::ProbePositioner(QWidget *parent, const char *name) + : QWidget( parent, name, WNoAutoErase ) +{ + m_probePosOffset = 0; + p_draggedProbe = 0l; + setFixedWidth( int(probeArrowWidth) ); + setBackgroundMode(NoBackground); + b_needRedraw = true; + m_pixmap = 0l; +} + + +ProbePositioner::~ProbePositioner() +{ + delete m_pixmap; +} + + +void ProbePositioner::forceRepaint() +{ + b_needRedraw = true; + repaint(false); +} + + +int ProbePositioner::probeOutputHeight() const +{ + int height = int( Oscilloscope::self()->oscilloscopeView->height() - probeArrowHeight ); + int numProbes = Oscilloscope::self()->numberOfProbes(); + if ( numProbes == 0 ) + numProbes = 1; + return height / numProbes; +} + + +int ProbePositioner::probePosition( ProbeData *probeData ) const +{ + if (!probeData) + return -1; + + int spacing = probeOutputHeight(); + int probeNum = Oscilloscope::self()->probeNumber(probeData->id()); + + return int( probeArrowHeight/2 + spacing*( probeNum + probeData->drawPosition() ) ); +} + + +void ProbePositioner::setProbePosition( ProbeData *probeData, int position ) +{ + if (!probeData) + return; + + int height = int( Oscilloscope::self()->oscilloscopeView->height() - probeArrowHeight ); + int numProbes = Oscilloscope::self()->numberOfProbes(); + int spacing = height / numProbes; + int probeNum = Oscilloscope::self()->probeNumber(probeData->id()); + + int minPos = int(probeArrowHeight/2); + int maxPos = int(Oscilloscope::self()->oscilloscopeView->height() - (probeArrowHeight/2)) - 1; + if ( position < minPos ) + position = minPos; + else if ( position > maxPos ) + position = maxPos; + + probeData->setDrawPosition( float(position - probeArrowHeight/2)/float(spacing) - probeNum ); + + forceRepaint(); + Oscilloscope::self()->oscilloscopeView->updateView(); +} + + +ProbeData* ProbePositioner::probeAtPosition( const QPoint &pos ) +{ + int relativeArrowHeight = int( probeArrowHeight * ( 1. - float(pos.x()/probeArrowWidth) ) ); + + const ProbeDataMap::const_iterator end = m_probeDataMap.end(); + for ( ProbeDataMap::const_iterator it = m_probeDataMap.begin(); it != end; ++it ) + { + ProbeData *probeData = it.data(); + int currentPos = probePosition(probeData); + m_probePosOffset = pos.y() - currentPos; + if ( std::abs(m_probePosOffset) <= relativeArrowHeight ) + return probeData; + } + m_probePosOffset = 0; + return 0l; +} + + +void ProbePositioner::slotProbeDataRegistered( int id, ProbeData *probe ) +{ + m_probeDataMap[id] = probe; + connect( probe, SIGNAL(displayAttributeChanged()), this, SLOT(forceRepaint()) ); + // This connect doesn't really belong here, but it save a lot of code + connect( probe, SIGNAL(displayAttributeChanged()), Oscilloscope::self()->oscilloscopeView, SLOT(updateView()) ); + forceRepaint(); + Oscilloscope::self()->oscilloscopeView->updateView(); +} + + +void ProbePositioner::slotProbeDataUnregistered( int id ) +{ + m_probeDataMap.erase(id); + // We "set" the position of each probe to force it into proper bounds + + const ProbeDataMap::const_iterator end = m_probeDataMap.end(); + for ( ProbeDataMap::const_iterator it = m_probeDataMap.begin(); it != end; ++it ) + setProbePosition( it.data(), probePosition( it.data() ) ); + + forceRepaint(); +} + + +void ProbePositioner::resizeEvent( QResizeEvent *e ) +{ + delete m_pixmap; + m_pixmap = new QPixmap( e->size() ); + QWidget::resizeEvent(e); + forceRepaint(); +} + + +void ProbePositioner::mousePressEvent( QMouseEvent * e ) +{ + p_draggedProbe = probeAtPosition(e->pos()); + if (p_draggedProbe) + e->accept(); + else + e->ignore(); +} + + +void ProbePositioner::mouseReleaseEvent( QMouseEvent * e ) +{ + if (p_draggedProbe) + e->accept(); + else + e->ignore(); +} + + +void ProbePositioner::mouseMoveEvent( QMouseEvent * e ) +{ + if (!p_draggedProbe) + { + e->ignore(); + return; + } + e->accept(); + + setProbePosition( p_draggedProbe, e->pos().y() - m_probePosOffset ); + forceRepaint(); +} + + +void ProbePositioner::paintEvent( QPaintEvent *e ) +{ + QRect r = e->rect(); + + if (b_needRedraw) + { + QPainter p; + m_pixmap->fill( paletteBackgroundColor() ); + p.begin(m_pixmap); + p.setClipRegion(e->region()); + + const ProbeDataMap::const_iterator end = m_probeDataMap.end(); + for ( ProbeDataMap::const_iterator it = m_probeDataMap.begin(); it != end; ++it ) + { + ProbeData *probeData = it.data(); + p.setBrush( probeData->color() ); + int currentPos = probePosition(probeData); + + QPointArray pa(3); + pa[0] = QPoint( 0, int(currentPos-(probeArrowHeight/2)) ); + pa[1] = QPoint( int(probeArrowWidth), currentPos ); + pa[2] = QPoint( 0, int(currentPos+(probeArrowHeight/2)) ); + + p.drawPolygon(pa); + } + b_needRedraw = false; + } + + bitBlt( this, r.x(), r.y(), m_pixmap, r.x(), r.y(), r.width(), r.height() ); +} + + +#include "probepositioner.moc" |