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Fixed "zero distance" graph crash

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Improved "no graph data" reporting
This commit is contained in:
Martin Tůma 2018-06-22 17:29:05 +02:00
parent fc18283172
commit cf6d27b1f5
2 changed files with 38 additions and 15 deletions
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35
src/GUI/graphview.cpp
View File

@ -3,6 +3,8 @@
#include <QMouseEvent>
#include <QPaintEngine>
#include <QPaintDevice>
#include <QGraphicsSimpleTextItem>
#include <QPalette>
#include "data/graph.h"
#include "opengl.h"
#include "config.h"
@ -41,6 +43,9 @@ GraphView::GraphView(QWidget *parent)
_sliderInfo->setZValue(3.0);
_info = new InfoItem();
_grid = new GridItem();
_message = new QGraphicsSimpleTextItem(tr("Data not available"));
_message->setBrush(QPalette().brush(QPalette::Disabled,
QPalette::WindowText));
connect(_slider, SIGNAL(positionChanged(const QPointF&)), this,
SLOT(emitSliderPositionChanged(const QPointF&)));
@ -157,9 +162,16 @@ void GraphView::setGraphType(GraphType type)
_bounds = QRectF();
for (int i = 0; i < _graphs.count(); i++) {
_graphs.at(i)->setGraphType(type);
if (_graphs.at(i)->scene() == _scene)
_bounds |= _graphs.at(i)->bounds();
GraphItem *gi = _graphs.at(i);
gi->setGraphType(type);
if (!_hide.contains(gi->id())) {
if (gi->bounds().width() > 0)
addItem(gi);
else
removeItem(gi);
}
if (gi->scene() == _scene)
_bounds |= gi->bounds();
}
if (type == Distance)
@ -198,8 +210,10 @@ void GraphView::addGraph(GraphItem *graph, int id)
if (!_hide.contains(id)) {
_visible.append(graph);
if (graph->bounds().width() > 0) {
_scene->addItem(graph);
_bounds |= graph->bounds();
}
setXUnits();
}
}
@ -230,12 +244,14 @@ void GraphView::showGraph(bool show, int id)
if (_hide.contains(gi->id()))
removeItem(gi);
else {
addItem(gi);
_visible.append(gi);
if (gi->bounds().width() > 0) {
addItem(gi);
_bounds |= gi->bounds();
}
}
}
}
QRectF GraphView::bounds() const
{
@ -246,6 +262,7 @@ QRectF GraphView::bounds() const
void GraphView::redraw()
{
if (!_graphs.isEmpty())
redraw(viewport()->size() - QSizeF(MARGIN, MARGIN));
}
@ -263,10 +280,12 @@ void GraphView::redraw(const QSizeF &size)
removeItem(_slider);
removeItem(_info);
removeItem(_grid);
_scene->setSceneRect(QRectF());
addItem(_message);
_scene->setSceneRect(_scene->itemsBoundingRect());
return;
}
removeItem(_message);
addItem(_xAxis);
addItem(_yAxis);
addItem(_slider);
@ -324,9 +343,11 @@ void GraphView::redraw(const QSizeF &size)
_scene->setSceneRect(_scene->itemsBoundingRect());
}
void GraphView::resizeEvent(QResizeEvent *)
void GraphView::resizeEvent(QResizeEvent *e)
{
redraw();
redraw(e->size() - QSizeF(MARGIN, MARGIN));
QGraphicsView::resizeEvent(e);
}
void GraphView::mousePressEvent(QMouseEvent *e)

8
src/GUI/graphview.h
View File

@ -16,6 +16,7 @@ class InfoItem;
class GraphItem;
class PathItem;
class GridItem;
class QGraphicsSimpleTextItem;
class GraphView : public QGraphicsView
{
@ -64,7 +65,6 @@ protected:
QRectF bounds() const;
void redraw();
void redraw(const QSizeF &size);
void addInfo(const QString &key, const QString &value);
void clearInfo();
void skipColor() {_palette.nextColor();}
@ -77,6 +77,7 @@ private slots:
void newSliderPosition(const QPointF &pos);
private:
void redraw(const QSizeF &size);
void setXUnits();
void createXLabel();
void createYLabel();
@ -85,8 +86,8 @@ private:
void removeItem(QGraphicsItem *item);
void addItem(QGraphicsItem *item);
void resizeEvent(QResizeEvent *);
void mousePressEvent(QMouseEvent *);
void resizeEvent(QResizeEvent *e);
void mousePressEvent(QMouseEvent *e);
Units _units;
qreal _xScale, _yScale;
@ -104,6 +105,7 @@ private:
SliderInfoItem *_sliderInfo;
InfoItem *_info;
GridItem *_grid;
QGraphicsSimpleTextItem *_message;
QList<GraphItem*> _visible;
QSet<int> _hide;