From b604fc4c3d10e9d1aee52ad821e02a96cfabc0fb 2017-08-02 09:30:45
From: Alexandre Leroux <aleroux@itlink.fr>
Date: 2017-08-02 09:30:45
Subject: [PATCH] Creates a delegate offering methods for rendering a graph

---

diff --git a/gui/include/Visualization/VisualizationGraphRenderingDelegate.h b/gui/include/Visualization/VisualizationGraphRenderingDelegate.h
new file mode 100644
index 0000000..6e34ac3
--- /dev/null
+++ b/gui/include/Visualization/VisualizationGraphRenderingDelegate.h
@@ -0,0 +1,18 @@
+#ifndef SCIQLOP_VISUALIZATIONGRAPHRENDERINGDELEGATE_H
+#define SCIQLOP_VISUALIZATIONGRAPHRENDERINGDELEGATE_H
+
+#include <Common/spimpl.h>
+
+class QCustomPlot;
+class QMouseEvent;
+
+class VisualizationGraphRenderingDelegate {
+public:
+    explicit VisualizationGraphRenderingDelegate(QCustomPlot &plot);
+
+private:
+    class VisualizationGraphRenderingDelegatePrivate;
+    spimpl::unique_impl_ptr<VisualizationGraphRenderingDelegatePrivate> impl;
+};
+
+#endif // SCIQLOP_VISUALIZATIONGRAPHRENDERINGDELEGATE_H
diff --git a/gui/src/Visualization/VisualizationGraphRenderingDelegate.cpp b/gui/src/Visualization/VisualizationGraphRenderingDelegate.cpp
new file mode 100644
index 0000000..56fc4bf
--- /dev/null
+++ b/gui/src/Visualization/VisualizationGraphRenderingDelegate.cpp
@@ -0,0 +1,13 @@
+#include "Visualization/VisualizationGraphRenderingDelegate.h"
+#include "Visualization/qcustomplot.h"
+
+struct VisualizationGraphRenderingDelegate::VisualizationGraphRenderingDelegatePrivate {
+    explicit VisualizationGraphRenderingDelegatePrivate(QCustomPlot &plot) : m_Plot{plot} {}
+
+    QCustomPlot &m_Plot;
+};
+
+VisualizationGraphRenderingDelegate::VisualizationGraphRenderingDelegate(QCustomPlot &plot)
+        : impl{spimpl::make_unique_impl<VisualizationGraphRenderingDelegatePrivate>(plot)}
+{
+}
diff --git a/gui/src/Visualization/VisualizationGraphWidget.cpp b/gui/src/Visualization/VisualizationGraphWidget.cpp
index 275a284..c2cb2f5 100644
--- a/gui/src/Visualization/VisualizationGraphWidget.cpp
+++ b/gui/src/Visualization/VisualizationGraphWidget.cpp
@@ -1,6 +1,7 @@
 #include "Visualization/VisualizationGraphWidget.h"
 #include "Visualization/IVisualizationWidgetVisitor.h"
 #include "Visualization/VisualizationGraphHelper.h"
+#include "Visualization/VisualizationGraphRenderingDelegate.h"
 #include "ui_VisualizationGraphWidget.h"
 
 #include <Data/ArrayData.h>
@@ -33,17 +34,21 @@ double toleranceValue(const QString &key, double defaultValue) noexcept
 
 struct VisualizationGraphWidget::VisualizationGraphWidgetPrivate {
 
-    explicit VisualizationGraphWidgetPrivate() : m_DoSynchronize{true}, m_IsCalibration{false} {}
-
+    explicit VisualizationGraphWidgetPrivate()
+            : m_DoSynchronize{true}, m_IsCalibration{false}, m_RenderingDelegate{nullptr}
+    {
+    }
 
     // Return the operation when range changed
     VisualizationGraphWidgetZoomType getZoomType(const QCPRange &t1, const QCPRange &t2);
 
     // 1 variable -> n qcpplot
     std::multimap<std::shared_ptr<Variable>, QCPAbstractPlottable *> m_VariableToPlotMultiMap;
-
     bool m_DoSynchronize;
     bool m_IsCalibration;
+    QCPItemTracer *m_TextTracer;
+    /// Delegate used to attach rendering features to the plot
+    std::unique_ptr<VisualizationGraphRenderingDelegate> m_RenderingDelegate;
 };
 
 VisualizationGraphWidget::VisualizationGraphWidget(const QString &name, QWidget *parent)
@@ -53,6 +58,9 @@ VisualizationGraphWidget::VisualizationGraphWidget(const QString &name, QWidget 
 {
     ui->setupUi(this);
 
+    // The delegate must be initialized after the ui as it uses the plot
+    impl->m_RenderingDelegate = std::make_unique<VisualizationGraphRenderingDelegate>(*ui->widget);
+
     ui->graphNameLabel->setText(name);
 
     // 'Close' options : widget is deleted when closed