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Handles key modifiers for zoom...
Alexandre Leroux -
r179:765885a6f6ff
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@@ -34,6 +34,10 private:
34
34
35 class VisualizationGraphWidgetPrivate;
35 class VisualizationGraphWidgetPrivate;
36 spimpl::unique_impl_ptr<VisualizationGraphWidgetPrivate> impl;
36 spimpl::unique_impl_ptr<VisualizationGraphWidgetPrivate> impl;
37
38 private slots:
39 /// Slot called when a mouse wheel was made, to perform some processing before the zoom is done
40 void onMouseWheel(QWheelEvent *event) noexcept;
37 };
41 };
38
42
39 #endif // SCIQLOP_VISUALIZATIONGRAPHWIDGET_H
43 #endif // SCIQLOP_VISUALIZATIONGRAPHWIDGET_H
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@@ -5,6 +5,16
5
5
6 #include <unordered_map>
6 #include <unordered_map>
7
7
8 namespace {
9
10 /// Key pressed to enable zoom on horizontal axis
11 const auto HORIZONTAL_ZOOM_MODIFIER = Qt::NoModifier;
12
13 /// Key pressed to enable zoom on vertical axis
14 const auto VERTICAL_ZOOM_MODIFIER = Qt::ControlModifier;
15
16 } // namespace
17
8 struct VisualizationGraphWidget::VisualizationGraphWidgetPrivate {
18 struct VisualizationGraphWidget::VisualizationGraphWidgetPrivate {
9
19
10 // 1 variable -> n qcpplot
20 // 1 variable -> n qcpplot
@@ -21,7 +31,9 VisualizationGraphWidget::VisualizationGraphWidget(QWidget *parent)
21
31
22 // Set qcpplot properties :
32 // Set qcpplot properties :
23 // - Drag and zoom are enabled
33 // - Drag and zoom are enabled
34 // - Mouse wheel on qcpplot is intercepted to determine the zoom orientation
24 ui->widget->setInteractions(QCP::iRangeDrag | QCP::iRangeZoom);
35 ui->widget->setInteractions(QCP::iRangeDrag | QCP::iRangeZoom);
36 connect(ui->widget, &QCustomPlot::mouseWheel, this, &VisualizationGraphWidget::onMouseWheel);
25 }
37 }
26
38
27 VisualizationGraphWidget::~VisualizationGraphWidget()
39 VisualizationGraphWidget::~VisualizationGraphWidget()
@@ -49,3 +61,20 QString VisualizationGraphWidget::name() const
49 {
61 {
50 return QStringLiteral("MainView");
62 return QStringLiteral("MainView");
51 }
63 }
64
65 void VisualizationGraphWidget::onMouseWheel(QWheelEvent *event) noexcept
66 {
67 auto zoomOrientations = QFlags<Qt::Orientation>{};
68
69 // Lambda that enables a zoom orientation if the key modifier related to this orientation has
70 // been pressed
71 auto enableOrientation
72 = [&zoomOrientations, event](const auto &orientation, const auto &modifier) {
73 auto orientationEnabled = event->modifiers().testFlag(modifier);
74 zoomOrientations.setFlag(orientation, orientationEnabled);
75 };
76 enableOrientation(Qt::Vertical, VERTICAL_ZOOM_MODIFIER);
77 enableOrientation(Qt::Horizontal, HORIZONTAL_ZOOM_MODIFIER);
78
79 ui->widget->axisRect()->setRangeZoom(zoomOrientations);
80 }
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