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Code Issues Projects Releases Activity

Code cleanup

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This commit is contained in:
Martin Tůma
2016-03-27 13:23:00 +02:00
parent b7f3a64577
commit c9b5e0f2cb
13 changed files with 155 additions and 138 deletions
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76
src/graphview.cpp
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@ -1,4 +1,3 @@
#include <float.h>
#include <QGraphicsView>
#include <QGraphicsSceneMouseEvent>
#include <QEvent>
@ -44,16 +43,11 @@ GraphView::GraphView(QWidget *parent)
_sliderInfo = new SliderInfoItem(_slider);
_sliderInfo->setZValue(2.0);
_xMax = -FLT_MAX;
_xMin = FLT_MAX;
_yMax = -FLT_MAX;
_yMin = FLT_MAX;
_xScale = 1;
_yScale = 1;
_precision = 0;
_minRange = 0.01;
_minYRange = 0.01;
}
GraphView::~GraphView()
@ -74,14 +68,14 @@ GraphView::~GraphView()
void GraphView::updateBounds(const QPointF &point)
{
if (point.x() < _xMin)
_xMin = point.x();
if (point.x() > _xMax)
_xMax = point.x();
if (point.y() < _yMin)
_yMin = point.y();
if (point.y() > _yMax)
_yMax = point.y();
if (point.x() < _bounds.left())
_bounds.setLeft(point.x());
if (point.x() > _bounds.right())
_bounds.setRight(point.x());
if (point.y() > _bounds.bottom())
_bounds.setBottom(point.y());
if (point.y() < _bounds.top())
_bounds.setTop(point.y());
}
void GraphView::createXLabel()
@ -137,6 +131,9 @@ void GraphView::loadData(const QVector<QPointF> &data)
if (data.size() < 2)
return;
if (!_graphs.size())
_bounds.moveTo(data.at(0));
updateBounds(data.at(0));
path.moveTo(data.at(0).x(), -data.at(0).y());
for (int i = 1; i < data.size(); i++) {
@ -154,8 +151,6 @@ void GraphView::loadData(const QVector<QPointF> &data)
if (_graphs.size() > 1)
_sliderInfo->hide();
redraw();
}
void GraphView::redraw()
@ -168,9 +163,9 @@ void GraphView::redraw(const QSizeF &size)
{
QRectF r;
QSizeF mx, my;
QPointF rx, ry;
RangeF rx, ry;
QTransform transform;
qreal xs, ys, diff;
qreal xs, ys;
if (_xAxis->scene() == _scene)
@ -185,20 +180,20 @@ void GraphView::redraw(const QSizeF &size)
for (int i = 0; i < _graphs.size(); i++)
_graphs.at(i)->resetTransform();
rx = QPointF(_xMin * _xScale, _xMax * _xScale);
ry = QPointF(_yMin * _yScale, _yMax * _yScale);
if ((diff = ry.y() - ry.x()) < _minRange)
ry = QPointF(ry.x() - (_minRange/2 - diff/2),
ry.y() + (_minRange/2 - diff/2));
rx = RangeF(_bounds.left() * _xScale, _bounds.right() * _xScale);
ry = RangeF(_bounds.top() * _yScale, _bounds.bottom() * _yScale);
if (ry.size() < _minYRange)
ry.resize(_minYRange);
_xAxis->setRange(rx);
_yAxis->setRange(ry);
mx = _xAxis->margin();
my = _yAxis->margin();
r = _scene->itemsBoundingRect();
if (r.height() < _minRange)
r.adjust(0, -(_minRange/2 - r.height()/2), 0,
_minRange/2 - r.height()/2);
if (r.height() < _minYRange)
r.adjust(0, -(_minYRange/2 - r.height()/2), 0,
_minYRange/2 - r.height()/2);
xs = (size.width() - (my.width() + mx.width())) / r.width();
ys = (size.height() - (mx.height() + my.height())
@ -209,9 +204,9 @@ void GraphView::redraw(const QSizeF &size)
_graphs.at(i)->setTransform(transform);
r = _scene->itemsBoundingRect();
if (r.height() < _minRange * ys)
r.adjust(0, -(_minRange/2 * ys - r.height()/2), 0,
(_minRange/2) * ys - r.height()/2);
if (r.height() < _minYRange * ys)
r.adjust(0, -(_minYRange/2 * ys - r.height()/2), 0,
(_minYRange/2) * ys - r.height()/2);
_xAxis->setSize(r.width());
_yAxis->setSize(r.height());
@ -281,10 +276,7 @@ void GraphView::clear()
_graphs.clear();
_palette.reset();
_xMax = -FLT_MAX;
_xMin = FLT_MAX;
_yMax = -FLT_MAX;
_yMin = FLT_MAX;
_bounds = QRectF();
_scene->setSceneRect(0, 0, 0, 0);
}
@ -326,18 +318,18 @@ void GraphView::emitSliderPositionChanged(const QPointF &pos)
return;
qreal val = pos.x() / _slider->area().width();
emit sliderPositionChanged(val * (_xMax - _xMin));
emit sliderPositionChanged(val * _bounds.width());
if (!_sliderInfo->isVisible())
return;
const QPainterPath &path = _graphs.at(0)->path();
QRectF br = path.boundingRect();
if (br.height() < _minRange)
br.adjust(0, -(_minRange/2 - br.height()/2), 0,
_minRange/2 - br.height()/2);
if (br.height() < _minYRange)
br.adjust(0, -(_minYRange/2 - br.height()/2), 0,
_minYRange/2 - br.height()/2);
qreal y = yAtX(path, val * (_xMax - _xMin));
qreal y = yAtX(path, val * _bounds.width());
qreal r = (y - br.bottom()) / br.height();
_sliderInfo->setPos(QPointF(0, _slider->boundingRect().height() * r));
_sliderInfo->setText(QString::number(-y * _yScale, 'f', _precision));
@ -348,7 +340,7 @@ qreal GraphView::sliderPosition() const
if (!_slider->isVisible())
return -1;
else
return (_slider->pos().x() / _slider->area().width()) * (_xMax - _xMin);
return (_slider->pos().x() / _slider->area().width()) * _bounds.width();
}
void GraphView::setSliderPosition(qreal pos)
@ -356,10 +348,10 @@ void GraphView::setSliderPosition(qreal pos)
if (_graphs.isEmpty())
return;
if (pos > (_xMax - _xMin))
if (pos > _bounds.right() || pos < _bounds.left())
_slider->setVisible(false);
else {
_slider->setPos((pos / (_xMax - _xMin)) * _slider->area().width(), 0);
_slider->setPos((pos / _bounds.width()) * _slider->area().width(), 0);
_slider->setVisible(true);
}
}