From f479af8417b5d0fea332dd2f4d0d32ed27fc4521 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C3=ABl=20Lemaire?= <michael@thunderk.net>
Date: Thu, 8 Mar 2012 15:56:44 +0000
Subject: [PATCH] paysages : Curve editor (WIP).

git-svn-id: https://subversion.assembla.com/svn/thunderk/paysages@277 b1fd45b6-86a6-48da-8261-f70d1f35bdcc
---
 gui_qt/dialogcolorgradation.cpp |  6 +++++-
 gui_qt/dialogcolorgradation.h   |  2 ++
 gui_qt/widgetcurveeditor.cpp    | 20 ++++++++++++++++++++
 gui_qt/widgetcurveeditor.h      |  3 +++
 lib_paysages/curve.c            |  8 ++++++++
 lib_paysages/curve.h            |  1 +
 6 files changed, 39 insertions(+), 1 deletion(-)

diff --git a/gui_qt/dialogcolorgradation.cpp b/gui_qt/dialogcolorgradation.cpp
index 8b2fd00..54b694a 100644
--- a/gui_qt/dialogcolorgradation.cpp
+++ b/gui_qt/dialogcolorgradation.cpp
@@ -25,6 +25,8 @@ DialogColorGradation::DialogColorGradation(QWidget *parent, ColorGradation* grad
     _curve_editor = new WidgetCurveEditor(this);
     layout()->addWidget(_curve_editor);
     
+    _curve = curveCreate();
+    
     /*QObject::connect(button, SIGNAL(clicked()), this, SLOT(accept()));
     QObject::connect(button, SIGNAL(clicked()), this, SLOT(revert()));
     QObject::connect(button, SIGNAL(clicked()), this, SLOT(reject()));*/
@@ -37,6 +39,7 @@ DialogColorGradation::DialogColorGradation(QWidget *parent, ColorGradation* grad
 DialogColorGradation::~DialogColorGradation()
 {
     colorGradationDelete(_current);
+    curveDelete(_curve);
 }
 
 bool DialogColorGradation::getGradation(QWidget* parent, ColorGradation* gradation)
@@ -70,5 +73,6 @@ void DialogColorGradation::revert()
 
 void DialogColorGradation::revertToCurrent()
 {
-    // TODO
+    colorGradationGetRedCurve(_current, _curve);
+    _curve_editor->setCurve(_curve);
 }
diff --git a/gui_qt/dialogcolorgradation.h b/gui_qt/dialogcolorgradation.h
index 0205120..87f27d8 100644
--- a/gui_qt/dialogcolorgradation.h
+++ b/gui_qt/dialogcolorgradation.h
@@ -6,6 +6,7 @@
 #include "widgetcurveeditor.h"
 
 #include "../lib_paysages/color.h"
+#include "../lib_paysages/curve.h"
 
 class DialogColorGradation : public QDialog
 {
@@ -29,6 +30,7 @@ private:
 private:
     ColorGradation* _base;
     ColorGradation* _current;
+    Curve* _curve;
     WidgetCurveEditor* _curve_editor;
 };
 
diff --git a/gui_qt/widgetcurveeditor.cpp b/gui_qt/widgetcurveeditor.cpp
index 9132810..3ae9582 100644
--- a/gui_qt/widgetcurveeditor.cpp
+++ b/gui_qt/widgetcurveeditor.cpp
@@ -15,8 +15,21 @@ WidgetCurveEditor::~WidgetCurveEditor()
     curveDelete(_curve);
 }
 
+void WidgetCurveEditor::setCurve(Curve* curve)
+{
+    curveCopy(curve, _curve);
+    update();
+}
+
+void WidgetCurveEditor::getCurve(Curve* curve)
+{
+    curveCopy(_curve, curve);
+}
+
 void WidgetCurveEditor::paintEvent(QPaintEvent* event)
 {
+    int i, n;
+    CurvePoint point;
     double position, value;
     
     QPainter painter(this);
@@ -29,4 +42,11 @@ void WidgetCurveEditor::paintEvent(QPaintEvent* event)
         value = curveGetValue(_curve, position);
         painter.drawPoint(x, 499 - (int)(value * 499.0));
     }
+    
+    n = curveGetPointCount(_curve);
+    for (i = 0; i < n; i++)
+    {
+        curveGetPoint(_curve, i, &point);
+        painter.drawEllipse(QPoint((int)(point.position * 499.0), 499 - (int)(point.value * 499.0)), 4.0, 4.0);
+    }
 }
diff --git a/gui_qt/widgetcurveeditor.h b/gui_qt/widgetcurveeditor.h
index 52139dd..7e395c3 100644
--- a/gui_qt/widgetcurveeditor.h
+++ b/gui_qt/widgetcurveeditor.h
@@ -12,6 +12,9 @@ public:
     WidgetCurveEditor(QWidget* parent);
     ~WidgetCurveEditor();
     
+    void setCurve(Curve* curve);
+    void getCurve(Curve* curve);
+    
 protected:
     void paintEvent(QPaintEvent* event);
     
diff --git a/lib_paysages/curve.c b/lib_paysages/curve.c
index e03f879..b3c19ce 100644
--- a/lib_paysages/curve.c
+++ b/lib_paysages/curve.c
@@ -96,6 +96,14 @@ void curveGetPoint(Curve* curve, int number, CurvePoint* point)
     }
 }
 
+void curveSetPoint(Curve* curve, int number, CurvePoint* point)
+{
+    if (number >= 0 && number < curve->nbpoints)
+    {
+        curve->points[number] = *point;
+    }
+}
+
 int _point_compare(const void* part1, const void* part2)
 {
     if (((CurvePoint*)part1)->position > ((CurvePoint*)part2)->position)
diff --git a/lib_paysages/curve.h b/lib_paysages/curve.h
index 1f1642c..fb89786 100644
--- a/lib_paysages/curve.h
+++ b/lib_paysages/curve.h
@@ -25,6 +25,7 @@ int curveAddPoint(Curve* curve, CurvePoint* point);
 int curveQuickAddPoint(Curve* curve, double position, double value);
 int curveGetPointCount(Curve* curve);
 void curveGetPoint(Curve* curve, int number, CurvePoint* point);
+void curveSetPoint(Curve* curve, int number, CurvePoint* point);
 void curveValidate(Curve* curve);
 
 double curveGetValue(Curve* curve, double position);