From 7cd05e520ac1bc4dd4b6cb4e92c3f8a2d7236a41 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=89milie=20Feral?= <emilie.feral@numworks.com>
Date: Wed, 10 Jan 2018 17:24:28 +0100
Subject: [PATCH] [apps] Graph: avoid reloading when highlighting the area
 under curve (which does change in the Graph app)

---
 apps/graph/graph/graph_view.cpp   | 1 +
 apps/graph/graph/graph_view.h     | 5 +++++
 apps/shared/function_graph_view.h | 4 ++--
 3 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/apps/graph/graph/graph_view.cpp b/apps/graph/graph/graph_view.cpp
index 071166259..21cdac509 100644
--- a/apps/graph/graph/graph_view.cpp
+++ b/apps/graph/graph/graph_view.cpp
@@ -1,4 +1,5 @@
 #include "graph_view.h"
+#include <float.h>
 
 using namespace Shared;
 
diff --git a/apps/graph/graph/graph_view.h b/apps/graph/graph/graph_view.h
index 9d586eeff..294bb2b3f 100644
--- a/apps/graph/graph/graph_view.h
+++ b/apps/graph/graph/graph_view.h
@@ -14,6 +14,11 @@ public:
   void reload() override;
   void drawRect(KDContext * ctx, KDRect rect) const override;
   void drawTangent(bool tangent) { m_tangent = tangent; }
+  /* We override setAreaHighlightColor to make it reload nothing as the
+   * highlightColor and the non-highlightColor are identical in the graph view
+   * of the application graph. We thereby avoid to uselessly reload some part
+   * of the graph where the area under the curve is colored. */
+  void setAreaHighlightColor(bool highlightColor) override {};
 private:
   CartesianFunctionStore * m_functionStore;
   bool m_tangent;
diff --git a/apps/shared/function_graph_view.h b/apps/shared/function_graph_view.h
index 5dceea693..4bc048af2 100644
--- a/apps/shared/function_graph_view.h
+++ b/apps/shared/function_graph_view.h
@@ -19,8 +19,9 @@ public:
   void selectFunction(Function * function);
   void setVerticalCursor(bool verticalCursor);
   void setAreaHighlight(float start, float end);
-  void setAreaHighlightColor(bool highlightColor);
+  virtual void setAreaHighlightColor(bool highlightColor);
 protected:
+  void reloadBetweenBounds(float start, float end);
   Function * m_selectedFunction;
   bool m_verticalCursor;
   float m_highlightedStart;
@@ -28,7 +29,6 @@ protected:
   bool m_shouldColorHighlighted;
 private:
   KDSize cursorSize() override;
-  void reloadBetweenBounds(float start, float end);
   char * label(Axis axis, int index) const override;
   char m_xLabels[k_maxNumberOfXLabels][Poincare::PrintFloat::bufferSizeForFloatsWithPrecision(Constant::ShortNumberOfSignificantDigits)];
   char m_yLabels[k_maxNumberOfYLabels][Poincare::PrintFloat::bufferSizeForFloatsWithPrecision(Constant::ShortNumberOfSignificantDigits)];