From 7d58f10c8034b779d752028ec3b5dcbce848c661 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andr=C3=A9=20Nusser?= <andre.nusser@googlemail.com>
Date: Mon, 17 Apr 2017 09:30:52 +0200
Subject: Make it possible to set the Slider colour via a public function.

---
 plugingui/slider.cc | 20 +++++++++++++++++---
 plugingui/slider.h  | 37 +++++++++++++++++++++++--------------
 2 files changed, 40 insertions(+), 17 deletions(-)

diff --git a/plugingui/slider.cc b/plugingui/slider.cc
index 19343bc..6a764b8 100644
--- a/plugingui/slider.cc
+++ b/plugingui/slider.cc
@@ -55,6 +55,21 @@ float Slider::value() const
 	return current_value;
 }
 
+void Slider::setColour(Colour colour)
+{
+	switch (colour) {
+	case Colour::Green:
+		inner_bar = &inner_bar_green;
+		break;
+	case Colour::Red:
+		inner_bar = &inner_bar_red;
+		break;
+	case Colour::Blue:
+		inner_bar = &inner_bar_blue;
+		break;
+	}
+}
+
 void Slider::repaintEvent(RepaintEvent* repaintEvent)
 {
 	Painter p(*this);
@@ -69,9 +84,8 @@ void Slider::repaintEvent(RepaintEvent* repaintEvent)
 	p.drawImage(0, 0, bar);
 
 	// draw inner bar
-	inner_bar_blue.setSize(
-	    button_x - bar_boundary, height() - 2 * bar_boundary);
-	p.drawImage(bar_boundary, bar_boundary, inner_bar_blue);
+	inner_bar->setSize(button_x - bar_boundary, height() - 2 * bar_boundary);
+	p.drawImage(bar_boundary, bar_boundary, *inner_bar);
 
 	// draw button
 	p.drawImage(button_x, button_y, button);
diff --git a/plugingui/slider.h b/plugingui/slider.h
index 7e4037f..9620fd0 100644
--- a/plugingui/slider.h
+++ b/plugingui/slider.h
@@ -53,6 +53,10 @@ public:
 	void setValue(float new_value);
 	float value() const;
 
+	enum class Colour { Green, Red, Blue };
+	// Changes the colour of the inner bar
+	void setColour(Colour colour);
+
 	Notifier<> clickNotifier;
 
 protected:
@@ -73,31 +77,36 @@ private:
 
 	State state;
 
-	TexturedBox bar{
-	    getImageCache(), ":slider.png", 0, 0, // atlas offset (x, y)
-	    7, 1, 7,                              // dx1, dx2, dx3
-	    7, 1, 7                               // dy1, dy2, dy3
+	TexturedBox bar{getImageCache(), ":slider.png",
+		0, 0, // atlas offset (x, y)
+	    7, 1, 7, // dx1, dx2, dx3
+	    7, 1, 7 // dy1, dy2, dy3
+	};
+	TexturedBox inner_bar_green{getImageCache(), ":slider.png",
+		30, 0, // atlas offset (x, y)
+		2, 1, 2, // dx1, dx2, dx3
+		2, 1, 2 // dy1, dy2, dy3
+	};
+	TexturedBox inner_bar_red{getImageCache(), ":slider.png",
+		30, 5, // atlas offset (x, y)
+		2, 1, 2, // dx1, dx2, dx3
+		2, 1, 2 // dy1, dy2, dy3
 	};
-	// TexturedBox inner_bar_green{
-	//     getImageCache(), ":slider.png", 30, 0, // atlas offset (x, y)
-	//     2, 1, 2,                               // dx1, dx2, dx3
-	//     2, 1, 2                                // dy1, dy2, dy3
-	// };
-	// TexturedBox inner_bar_red{getImageCache(), ":slider.png",
-	//     30, 5, // atlas offset (x, y)
-	//     2, 1, 2, // dx1, dx2, dx3
-	//     2, 1, 2 // dy1, dy2, dy3
-	// };
 	TexturedBox inner_bar_blue{getImageCache(), ":slider.png",
 		30, 10, // atlas offset (x, y)
 		2, 1, 2, // dx1, dx2, dx3
 		2, 1, 2 // dy1, dy2, dy3
 	};
+
 	Texture button{
 	    getImageCache(), ":slider.png", 15, 0, // atlas offset (x, y)
 	    15, 15                                 // width, height
 	};
 
+	// This points to the inner_bar_* of the current color.
+	// It should never be a nullptr!
+	TexturedBox* inner_bar{&inner_bar_blue};
+
 	std::size_t bar_boundary{5};
 	std::size_t button_offset{7};
 
-- 
cgit v1.2.3