Animate audio port colours based on levels.

git-svn-id: http://svn.drobilla.net/lad/trunk/ingen@3475 a436a847-0d15-0410-975c-d299462d15a1

3 files changed, 59 insertions, 6 deletions

diff --git a/src/gui/Configuration.cpp b/src/gui/Configuration.cpp
index 8eb39cd7..5018cbf1 100644
--- a/src/gui/Configuration.cpp
+++ b/src/gui/Configuration.cpp
@@ -40,8 +40,8 @@ using namespace Ingen::Client;
 Configuration::Configuration()
 	// Colours from  the Tango palette with modified V and alpha
 	: _name_style(HUMAN)
-	, _audio_port_color(  0x244678C0) // Blue
-	, _control_port_color(0x4A8A0EC0) // Green
+	, _audio_port_color(  0x4A8A0EC0) // Green
+	, _control_port_color(0x244678C0) // Blue
 	, _event_port_color(  0x960909C0) // Red
 	, _string_port_color( 0x5C3566C0) // Plum
 	, _value_port_color(  0xBABDB6C0) // Aluminum
diff --git a/src/gui/Port.cpp b/src/gui/Port.cpp
index 9b2a1c8f..450b75cf 100644
--- a/src/gui/Port.cpp
+++ b/src/gui/Port.cpp
@@ -77,7 +77,7 @@ Port::Port(FlowCanvas::Module&        module,
 
 	ArtVpathDash* dash = this->dash();
 	_rect.property_dash() = dash;
-	set_border_width(dash ? 2.0 : 0.0);
+	set_border_width(1.0);
 
 	pm->signal_moved().connect(sigc::mem_fun(this, &Port::moved));
 
@@ -162,10 +162,63 @@ Port::on_event(GdkEvent* ev)
 	return false;
 }
 
+/* Peak colour stuff */
+
+static inline uint32_t
+rgba_to_uint(uint8_t r, uint8_t g, uint8_t b, uint8_t a)
+{
+	return ((((uint32_t)(r)) << 24) |
+	        (((uint32_t)(g)) << 16) |
+	        (((uint32_t)(b)) << 8) |
+	        (((uint32_t)(a))));
+}
+
+static inline uint8_t
+mono_interpolate(uint8_t v1, uint8_t v2, float f)
+{
+	return ((int)rint((v2) * (f) + (v1) * (1 - (f))));
+}
+
+#define RGBA_R(x) (((uint32_t)(x)) >> 24)
+#define RGBA_G(x) ((((uint32_t)(x)) >> 16) & 0xFF)
+#define RGBA_B(x) ((((uint32_t)(x)) >> 8) & 0xFF)
+#define RGBA_A(x) (((uint32_t)(x)) & 0xFF)
+
+static inline uint32_t
+rgba_interpolate(uint32_t c1, uint32_t c2, float f)
+{
+	return rgba_to_uint(
+		mono_interpolate(RGBA_R(c1), RGBA_R(c2), f),
+        mono_interpolate(RGBA_G(c1), RGBA_G(c2), f),
+        mono_interpolate(RGBA_B(c1), RGBA_B(c2), f),
+		mono_interpolate(RGBA_A(c1), RGBA_A(c2), f));
+}
+
+inline static uint32_t
+peak_color(float peak)
+{
+	static const uint32_t min      = 0x4A8A0EC0;
+	static const uint32_t max      = 0xFFCE1FC0;
+	static const uint32_t peak_min = 0xFF561FC0;
+	static const uint32_t peak_max = 0xFF0A38C0;
+
+	if (peak < 1.0) {
+		return rgba_interpolate(min, max, peak);
+	} else {
+		return rgba_interpolate(peak_min, peak_max, fminf(peak, 2.0f) - 1.0f);
+	}
+}
+
+/* End peak colour stuff */
+
 void
-Port::activity()
+Port::activity(const Raul::Atom& value)
 {
-	App::instance().port_activity(this);
+	if (model()->is_a(PortType::AUDIO)) {
+		set_fill_color(peak_color(value.get_float()));
+	} else {
+		App::instance().port_activity(this);
+	}
 }
 
 void
diff --git a/src/gui/Port.hpp b/src/gui/Port.hpp
index 65f7c2e2..788baa0e 100644
--- a/src/gui/Port.hpp
+++ b/src/gui/Port.hpp
@@ -55,7 +55,7 @@ public:
 
 	virtual void set_control(float value, bool signal);
 	void value_changed(const Raul::Atom& value);
-	void activity();
+	void activity(const Raul::Atom& value);
 
 	void set_selected(bool b);