Add ColorSlidersChangeEvent so ColorSliders::ColorChange signal

can receive the modified channel.

src/widgets/color_selector.cpp

@@ -122,19 +122,10 @@ void ColorSelector::onColorPaletteIndexChange(int index)
   setColorWithSignal(Color::fromIndex(index));
 }
 
-void ColorSelector::onColorSlidersChange(const Color& color)
+void ColorSelector::onColorSlidersChange(ColorSlidersChangeEvent& ev)
 {
-  setColorWithSignal(color);
-
-  // Find bestfit palette entry
-  int r = color.getRed();
-  int g = color.getGreen();
-  int b = color.getBlue();
-  
-  // Search for the closest color to the RGB values
-  int i = get_current_palette()->findBestfit(r, g, b);
-  if (i >= 0 && i < 256)
-    m_colorPalette.selectColor(i);
+  setColorWithSignal(ev.getColor());
+  findBestfitIndex(ev.getColor());
 }
 
 void ColorSelector::onColorHexEntryChange(const Color& color)
@@ -143,7 +134,8 @@ void ColorSelector::onColorHexEntryChange(const Color& color)
   // is writting in the text field.
   m_disableHexUpdate = true;
 
-  onColorSlidersChange(color);
+  setColorWithSignal(color);
+  findBestfitIndex(color);
 
   m_disableHexUpdate = false;
 }
@@ -162,6 +154,19 @@ void ColorSelector::onColorTypeButtonClick(Event& ev)
   }
 }
 
+void ColorSelector::findBestfitIndex(const Color& color)
+{
+  // Find bestfit palette entry
+  int r = color.getRed();
+  int g = color.getGreen();
+  int b = color.getBlue();
+  
+  // Search for the closest color to the RGB values
+  int i = get_current_palette()->findBestfit(r, g, b);
+  if (i >= 0 && i < 256)
+    m_colorPalette.selectColor(i);
+}
+
 void ColorSelector::setColorWithSignal(const Color& color)
 {
   setColor(color);

src/widgets/color_selector.h

@@ -43,13 +43,14 @@ public:
   
 protected:
   void onColorPaletteIndexChange(int index);
-  void onColorSlidersChange(const Color& color);
+  void onColorSlidersChange(ColorSlidersChangeEvent& ev);
   void onColorHexEntryChange(const Color& color);
   void onColorTypeButtonClick(Event& ev);
 
 private:
   void selectColorType(Color::Type type);
   void setColorWithSignal(const Color& color);
+  void findBestfitIndex(const Color& color);
 
   Box m_vbox;
   Box m_topBox;

src/widgets/color_sliders.cpp

@@ -122,6 +122,7 @@ void ColorSliders::addSlider(Channel channel, const char* labelText, int min, in
   m_label.push_back(label);
   m_slider.push_back(slider);
   m_entry.push_back(entry);
+  m_channel.push_back(channel);
 
   slider->setProperty(PropertyPtr(new SkinSliderProperty(new ColorSliderBgPainter(channel))));
   slider->setDoubleBuffered(true);
@@ -153,7 +154,7 @@ void ColorSliders::onSliderChange(int i)
   // Update the entry related to the changed slider widget.
   m_entry[i]->setTextf("%d", m_slider[i]->getValue());
 
-  onControlChange();
+  onControlChange(i);
 }
 
 void ColorSliders::onEntryChange(int i)
@@ -167,10 +168,10 @@ void ColorSliders::onEntryChange(int i)
 
   m_slider[i]->setValue(value);
 
-  onControlChange();
+  onControlChange(i);
 }
 
-void ColorSliders::onControlChange()
+void ColorSliders::onControlChange(int i)
 {
   // Call derived class impl of getColorFromSliders() to update the
   // background color of sliders.
@@ -179,7 +180,8 @@ void ColorSliders::onControlChange()
   updateSlidersBgColor(color);
 
   // Fire ColorChange() signal
-  ColorChange(color);
+  ColorSlidersChangeEvent ev(color, m_channel[i], this);
+  ColorChange(ev);
 }
 
 void ColorSliders::updateSlidersBgColor(const Color& color)

src/widgets/color_sliders.h

@@ -21,6 +21,7 @@
 
 #include "app/color.h"
 #include "base/signal.h"
+#include "gui/event.h"
 #include "gui/grid.h"
 #include "gui/widget.h"
 
@@ -30,6 +31,11 @@ class Label;
 class Slider;
 class Entry;
 
+class ColorSlidersChangeEvent;
+
+//////////////////////////////////////////////////////////////////////
+// ColorSliders class
+
 class ColorSliders : public Widget
 {
 public:
@@ -43,7 +49,7 @@ public:
   void setColor(const Color& color);
 
   // Signals
-  Signal1<void, const Color&> ColorChange;
+  Signal1<void, ColorSlidersChangeEvent&> ColorChange;
 
 protected:
   void onPreferredSize(PreferredSizeEvent& ev);
@@ -59,7 +65,7 @@ protected:
 private:
   void onSliderChange(int i);
   void onEntryChange(int i);
-  void onControlChange();
+  void onControlChange(int i);
 
   void updateSlidersBgColor(const Color& color);
   void updateSliderBgColor(Slider* slider, const Color& color);
@@ -67,9 +73,13 @@ private:
   std::vector<Label*> m_label;
   std::vector<Slider*> m_slider;
   std::vector<Entry*> m_entry;
+  std::vector<Channel> m_channel;
   Grid m_grid;
 };
 
+//////////////////////////////////////////////////////////////////////
+// Derived-classes
+
 class RgbSliders : public ColorSliders
 {
 public:
@@ -100,4 +110,24 @@ private:
   virtual Color getColorFromSliders();
 };
 
+//////////////////////////////////////////////////////////////////////
+// Events
+
+class ColorSlidersChangeEvent : public Event
+{
+public:
+  ColorSlidersChangeEvent(const Color& color, ColorSliders::Channel channel, Component* source)
+    : Event(source)
+    , m_color(color)
+    , m_channel(channel) { }
+
+  Color getColor() const { return m_color; }
+
+  ColorSliders::Channel getModifiedChannel() const { return m_channel; }
+
+private:
+  Color m_color;
+  ColorSliders::Channel m_channel;
+};
+
 #endif