mirror of
https://github.com/GoldenCheetah/GoldenCheetah.git
synced 2026-02-13 16:18:42 +00:00
c44758c5ad
Upgrade to QWT 6.0.1, but still uses a locally patched copy since support for 8 axes has not been included, despite it being a relatively simple patch. Fixes #634. Fixes #567.
126 lines
3.2 KiB
C++
126 lines
3.2 KiB
C++
#include "attitude_indicator.h"
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#include <qwt_point_polar.h>
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#include <qevent.h>
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#include <qpainter.h>
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#include <qpolygon.h>
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AttitudeIndicatorNeedle::AttitudeIndicatorNeedle(const QColor &c)
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{
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QPalette palette;
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for ( int i = 0; i < QPalette::NColorGroups; i++ )
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{
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palette.setColor((QPalette::ColorGroup)i,
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QPalette::Text, c);
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}
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setPalette(palette);
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}
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void AttitudeIndicatorNeedle::drawNeedle(QPainter *painter,
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double length, QPalette::ColorGroup colorGroup) const
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{
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double triangleSize = length * 0.1;
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double pos = length - 2.0;
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QPainterPath path;
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path.moveTo( pos, 0 );
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path.lineTo( pos - 2 * triangleSize, triangleSize );
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path.lineTo( pos - 2 * triangleSize, -triangleSize );
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path.closeSubpath();
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painter->setBrush( palette().brush(colorGroup, QPalette::Text ) );
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painter->drawPath( path );
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double l = length - 2;
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painter->setPen( QPen(palette().color( colorGroup, QPalette::Text ), 3) );
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painter->drawLine( 0, -l, 0, l );
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}
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AttitudeIndicator::AttitudeIndicator(
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QWidget *parent):
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QwtDial(parent),
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d_gradient(0.0)
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{
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setMode(RotateScale);
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setWrapping(true);
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setOrigin(270.0);
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setScaleComponents( QwtAbstractScaleDraw::Ticks );
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setScale(0, 0, 30.0);
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const QColor color = palette().color(QPalette::Text);
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setNeedle(new AttitudeIndicatorNeedle(color));
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}
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void AttitudeIndicator::setGradient(double gradient)
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{
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if ( gradient < -1.0 )
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gradient = -1.0;
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else if ( gradient > 1.0 )
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gradient = 1.0;
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if ( d_gradient != gradient )
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{
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d_gradient = gradient;
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update();
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}
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}
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void AttitudeIndicator::drawScale(QPainter *painter, const QPointF ¢er,
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double radius, double origin, double minArc, double maxArc) const
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{
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// counter clockwise, radian
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const double dir = (360.0 - origin) * M_PI / 180.0;
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const double offset = 4.0;
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const QPointF p0 = qwtPolar2Pos( center, offset, dir + M_PI );
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const double w = innerRect().width();
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QPainterPath path;
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path.moveTo( qwtPolar2Pos( p0, w, dir - M_PI_2 ) );
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path.lineTo( qwtPolar2Pos( path.currentPosition(), 2 * w, dir + M_PI_2 ) );
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path.lineTo( qwtPolar2Pos( path.currentPosition(), w, dir ) );
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path.lineTo( qwtPolar2Pos( path.currentPosition(), w, dir - M_PI_2 ) );
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painter->save();
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painter->setClipPath( path ); // swallow 180 - 360 degrees
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QwtDial::drawScale(painter,
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center, radius, origin, minArc, maxArc);
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painter->restore();
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}
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void AttitudeIndicator::drawScaleContents(QPainter *painter,
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const QPointF &, double) const
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{
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int dir = 360 - qRound(origin() - value()); // counter clockwise
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int arc = 90 + qRound(gradient() * 90);
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const QColor skyColor(38, 151, 221);
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painter->save();
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painter->setBrush(skyColor);
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painter->drawChord(scaleInnerRect(),
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(dir - arc) * 16, 2 * arc * 16 );
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painter->restore();
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}
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void AttitudeIndicator::keyPressEvent(QKeyEvent *e)
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{
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switch(e->key())
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{
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case Qt::Key_Plus:
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setGradient(gradient() + 0.05);
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break;
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case Qt::Key_Minus:
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setGradient(gradient() - 0.05);
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break;
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default:
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QwtDial::keyPressEvent(e);
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}
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}
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