From 8264fa4b2aa2e945dda51f9a1aab8fd019e48539 2017-11-10 08:42:52
From: Alexandre Leroux <aleroux@itlink.fr>
Date: 2017-11-10 08:42:52
Subject: [PATCH] Handles rendering of plottables (1)

As for the axes properties, we create a helper used to set rendering properties of the plottables depending on the type of the data series used to create these plottables.

Rendering properties will be, for example:
- the color of each component for a scalar or a vector
- the color scale management for a spectrogram

---

diff --git a/gui/include/Visualization/PlottablesRenderingUtils.h b/gui/include/Visualization/PlottablesRenderingUtils.h
new file mode 100644
index 0000000..ddc9b2e
--- /dev/null
+++ b/gui/include/Visualization/PlottablesRenderingUtils.h
@@ -0,0 +1,29 @@
+#ifndef SCIQLOP_PLOTTABLESRENDERINGUTILS_H
+#define SCIQLOP_PLOTTABLESRENDERINGUTILS_H
+
+#include <Visualization/VisualizationDefs.h>
+
+#include <memory>
+
+class IDataSeries;
+class QCPColorScale;
+class QCustomPlot;
+
+/**
+ * Helper used to handle plottables rendering
+ */
+struct IPlottablesHelper {
+    virtual ~IPlottablesHelper() noexcept = default;
+
+    /// Set properties of the plottables passed as parameter
+    /// @param plottables the plottables for which to set properties
+    virtual void setProperties(PlottablesMap &plottables) = 0;
+};
+
+struct IPlottablesHelperFactory {
+    /// Creates IPlottablesHelper according to a data series
+    static std::unique_ptr<IPlottablesHelper>
+    create(std::shared_ptr<IDataSeries> dataSeries) noexcept;
+};
+
+#endif // SCIQLOP_PLOTTABLESRENDERINGUTILS_H
diff --git a/gui/meson.build b/gui/meson.build
index 31c7e80..87208a6 100644
--- a/gui/meson.build
+++ b/gui/meson.build
@@ -78,6 +78,7 @@ gui_sources = [
   'src/Visualization/VisualizationDragDropContainer.cpp',
   'src/Visualization/VisualizationDragWidget.cpp'
   'src/Visualization/AxisRenderingUtils.cpp',
+  'src/Visualization/PlottablesRenderingUtils.cpp'
 ]
 
 gui_inc = include_directories(['include'])
diff --git a/gui/src/Visualization/PlottablesRenderingUtils.cpp b/gui/src/Visualization/PlottablesRenderingUtils.cpp
new file mode 100644
index 0000000..c9b90d6
--- /dev/null
+++ b/gui/src/Visualization/PlottablesRenderingUtils.cpp
@@ -0,0 +1,65 @@
+#include "Visualization/PlottablesRenderingUtils.h"
+
+#include <Data/ScalarSeries.h>
+#include <Data/VectorSeries.h>
+
+#include <Visualization/qcustomplot.h>
+
+namespace {
+
+/**
+ * Delegate used to set plottables properties
+ */
+template <typename T, typename Enabled = void>
+struct PlottablesSetter {
+    static void setProperties(T &, PlottablesMap &)
+    {
+        // Default implementation does nothing
+    }
+};
+
+/**
+ * Specialization of PlottablesSetter for scalars and vectors
+ * @sa ScalarSeries
+ * @sa VectorSeries
+ */
+template <typename T>
+struct PlottablesSetter<T, typename std::enable_if_t<std::is_base_of<ScalarSeries, T>::value
+                                                     or std::is_base_of<VectorSeries, T>::value> > {
+    static void setProperties(T &dataSeries, PlottablesMap &plottables)
+    {
+        /// @todo ALX
+    }
+};
+
+/**
+ * Default implementation of IPlottablesHelper, which takes data series to set plottables properties
+ * @tparam T the data series' type
+ */
+template <typename T>
+struct PlottablesHelper : public IPlottablesHelper {
+    explicit PlottablesHelper(T &dataSeries) : m_DataSeries{dataSeries} {}
+
+    void setProperties(PlottablesMap &plottables) override
+    {
+        PlottablesSetter<T>::setProperties(m_DataSeries, plottables);
+    }
+
+    T &m_DataSeries;
+};
+
+} // namespace
+
+std::unique_ptr<IPlottablesHelper>
+IPlottablesHelperFactory::create(std::shared_ptr<IDataSeries> dataSeries) noexcept
+{
+    if (auto scalarSeries = std::dynamic_pointer_cast<ScalarSeries>(dataSeries)) {
+        return std::make_unique<PlottablesHelper<ScalarSeries> >(*scalarSeries);
+    }
+    else if (auto vectorSeries = std::dynamic_pointer_cast<VectorSeries>(dataSeries)) {
+        return std::make_unique<PlottablesHelper<VectorSeries> >(*vectorSeries);
+    }
+    else {
+        return std::make_unique<PlottablesHelper<IDataSeries> >(*dataSeries);
+    }
+}