push2: color palette management, and responding to 2 track properties in TrackMix layout

libs/surfaces/push2/mix.cc

@@ -269,7 +269,6 @@ MixLayout::stripable_property_change (PropertyChange const& what_changed, int wh
 	}
 }
 
-
 void
 MixLayout::solo_change (int n)
 {

libs/surfaces/push2/push2.cc

@@ -38,6 +38,8 @@
 #include "ardour/session.h"
 #include "ardour/tempo.h"
 
+#include "gtkmm2ext/rgb_macros.h"
+
 #include "push2.h"
 #include "gui.h"
 #include "layout.h"
@@ -138,6 +140,7 @@ Push2::Push2 (ARDOUR::Session& s)
 	context = Cairo::Context::create (frame_buffer);
 
 	build_maps ();
+	build_color_map ();
 
 	/* master cannot be removed, so no need to connect to going-away signal */
 	master = session->master_out ();
@@ -1602,3 +1605,85 @@ Push2::button_by_id (ButtonID bid)
 {
 	return id_button_map[bid];
 }
+
+uint8_t
+Push2::get_color_index (uint32_t rgb)
+{
+	ColorMap::iterator i = color_map.find (rgb);
+
+	if (i != color_map.end()) {
+		return i->second;
+	}
+
+	cerr << "new color 0x" << std::hex << rgb << std::dec << endl;
+
+	int r, g, b, a;
+	UINT_TO_RGBA (rgb, &r, &g, &b, &a);
+	uint8_t r7, r1;
+	uint8_t b7, b1;
+	uint8_t g7, g1;
+	uint8_t w7, w1;
+
+	r7 = r & 0x7f;
+	r1 = r & 0x1;
+	g7 = g & 0x7f;
+	g1 = g & 0x1;
+	b7 = b & 0x7f;
+	b1 = b & 0x1;
+	w7 = 204 & 0x7f;
+	w1 = 204 & 0x1;
+
+	/* get a free index */
+
+	uint8_t index;
+
+	if (color_map_free_list.empty()) {
+		/* random replacement of any entry below 122 (where the
+		 * Ableton standard colors live, and not zero either (black)
+		 */
+		index = 1 + (random() % 121);
+	} else {
+		index = color_map_free_list.top();
+		color_map_free_list.pop();
+	}
+
+	MidiByteArray palette_msg (17, 0xf0, 0x00 , 0x21, 0x1d, 0x01, 0x01, 0x03, 0x7D, 0x00, 0x00, 0x00, 0x00, 0x7F, 0x01, 0x7E, 0x00, 0xF7);
+	MidiByteArray update_pallette_msg (8, 0xf0, 0x00, 0x21, 0x1d, 0x01, 0x01, 0x05, 0xF7);
+
+	palette_msg[7] = index;
+	palette_msg[8] = r7;
+	palette_msg[9] = r1;
+	palette_msg[10] = g7;
+	palette_msg[11] = g1;
+	palette_msg[12] = b7;
+	palette_msg[13] = b1;
+	palette_msg[14] = w7;
+	palette_msg[15] = w1;
+
+	write (palette_msg);
+	write (update_pallette_msg);
+
+	color_map[index] = rgb;
+
+	return index;
+}
+
+void
+Push2::build_color_map ()
+{
+	/* These are "standard" colors that Ableton docs suggest will always be
+	   there
+	*/
+
+	color_map.insert (make_pair (RGB_TO_UINT (0,0,0), 0));
+	color_map.insert (make_pair (RGB_TO_UINT (204,204,204), 122));
+	color_map.insert (make_pair (RGB_TO_UINT (64,64,64), 123));
+	color_map.insert (make_pair (RGB_TO_UINT (20,20,20), 124));
+	color_map.insert (make_pair (RGB_TO_UINT (0,0,255), 125));
+	color_map.insert (make_pair (RGB_TO_UINT (0,255,0), 126));
+	color_map.insert (make_pair (RGB_TO_UINT (255,0,0), 127));
+
+	for (uint8_t n = 1; n < 122; ++n) {
+		color_map_free_list.push (n);
+	}
+}

libs/surfaces/push2/push2.h

@@ -21,6 +21,7 @@
 
 #include <vector>
 #include <map>
+#include <stack>
 #include <list>
 #include <set>
 
@@ -327,6 +328,8 @@ class Push2 : public ARDOUR::ControlProtocol
 
 	void write (const MidiByteArray&);
 
+	uint8_t get_color_index (uint32_t rgb);
+
 	static const int cols;
 	static const int rows;
 
@@ -532,6 +535,14 @@ class Push2 : public ARDOUR::ControlProtocol
 
 	bool percussion;
 	void set_percussive_mode (bool);
+
+	/* color map */
+
+	typedef std::map<uint32_t,uint8_t> ColorMap;
+	typedef std::stack<uint8_t> ColorMapFreeList;
+	ColorMap color_map;
+	ColorMapFreeList color_map_free_list;
+	void build_color_map ();
 };
 
 } /* namespace */

libs/surfaces/push2/track_mix.cc

@@ -60,6 +60,17 @@ TrackMixLayout::TrackMixLayout (Push2& p, Session& s, Cairo::RefPtr<Cairo::Conte
 
 	Pango::FontDescription fd ("Sans Bold 24");
 	name_layout->set_font_description (fd);
+
+	Pango::FontDescription fd2 ("Sans 10");
+	for (int n = 0; n < 8; ++n) {
+		upper_layout[n] = Pango::Layout::create (context);
+		upper_layout[n]->set_font_description (fd2);
+		upper_layout[n]->set_text ("solo");
+		lower_layout[n] = Pango::Layout::create (context);
+		lower_layout[n]->set_font_description (fd2);
+		lower_layout[n]->set_text ("mute");
+	}
+
 }
 
 TrackMixLayout::~TrackMixLayout ()
@@ -112,7 +123,12 @@ TrackMixLayout::set_stripable (boost::shared_ptr<Stripable> s)
 
 	if (stripable) {
 		stripable->DropReferences.connect (stripable_connections, MISSING_INVALIDATOR, boost::bind (&TrackMixLayout::drop_stripable, this), &p2);
+
+		stripable->PropertyChanged.connect (stripable_connections, MISSING_INVALIDATOR, boost::bind (&TrackMixLayout::stripable_property_change, this, _1), &p2);
+		stripable->presentation_info().PropertyChanged.connect (stripable_connections, MISSING_INVALIDATOR, boost::bind (&TrackMixLayout::stripable_property_change, this, _1), &p2);
+
 		name_changed ();
+		color_changed ();
 	}
 
 	_dirty = true;
@@ -132,3 +148,26 @@ TrackMixLayout::name_changed ()
 	name_layout->set_text (stripable->name());
 	_dirty = true;
 }
+
+void
+TrackMixLayout::color_changed ()
+{
+	uint32_t rgb = stripable->presentation_info().color();
+	uint8_t index = p2.get_color_index (rgb);
+
+	Push2::Button* b = p2.button_by_id (Push2::Upper1);
+	b->set_color (index);
+	b->set_state (Push2::LED::OneShot24th);
+	p2.write (b->state_msg ());
+}
+
+void
+TrackMixLayout::stripable_property_change (PropertyChange const& what_changed)
+{
+	if (what_changed.contains (Properties::color)) {
+		color_changed ();
+	}
+	if (what_changed.contains (Properties::name)) {
+		name_changed ();
+	}
+}

libs/surfaces/push2/track_mix.h

@@ -49,9 +49,14 @@ class TrackMixLayout : public Push2Layout
 	bool _dirty;
 
 	Glib::RefPtr<Pango::Layout> name_layout;
+	Glib::RefPtr<Pango::Layout> upper_layout[8];
+	Glib::RefPtr<Pango::Layout> lower_layout[8];
+
+	void stripable_property_change (PBD::PropertyChange const& what_changed);
 
 	void drop_stripable ();
 	void name_changed ();
+	void color_changed ();
 };
 
 } /* namespace */