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