From 8b230014412b90b78240685b16a8d4e624cc5ce6 Mon Sep 17 00:00:00 2001
From: Paul Davis <paul@linuxaudiosystems.com>
Date: Mon, 15 Dec 2014 12:07:05 -0500
Subject: [PATCH] add editor to Theme Manager for modifiers

---
 gtk2_ardour/theme_manager.cc | 49 +++++++++++++++++++++++++++++++++++-
 gtk2_ardour/theme_manager.h  |  6 +++++
 gtk2_ardour/ui_config.cc     | 19 +++++++++++++-
 gtk2_ardour/ui_config.h      |  2 ++
 4 files changed, 74 insertions(+), 2 deletions(-)

diff --git a/gtk2_ardour/theme_manager.cc b/gtk2_ardour/theme_manager.cc
index b21b713706..958d952d07 100644
--- a/gtk2_ardour/theme_manager.cc
+++ b/gtk2_ardour/theme_manager.cc
@@ -157,9 +157,12 @@ ThemeManager::ThemeManager()
 	palette_viewport.signal_size_allocate().connect (sigc::bind (sigc::mem_fun (*this, &ThemeManager::palette_canvas_allocated), palette_group, palette_viewport.canvas(),
 								     sigc::mem_fun (*this, &ThemeManager::palette_event)));
 	palette_scroller.add (palette_viewport);
+
+	modifier_scroller.add (modifier_vbox);
 	
 	notebook.append_page (alias_scroller, _("Items"));
 	notebook.append_page (palette_scroller, _("Palette"));
+	notebook.append_page (modifier_scroller, _("Modifiers"));
 	
 	vbox->pack_start (notebook);
 
@@ -200,7 +203,8 @@ ThemeManager::ThemeManager()
 	set_size_request (-1, 400);
 	/* no need to call setup_palette() here, it will be done when its size is allocated */
 	setup_aliases ();
-
+	setup_modifiers ();
+	
 	/* Trigger setting up the color scheme and loading the GTK RC file */
 
 	ARDOUR_UI::config()->load_rc_file (false);
@@ -212,11 +216,54 @@ ThemeManager::~ThemeManager()
 {
 }
 
+void
+ThemeManager::setup_modifiers ()
+{
+	UIConfiguration* uic (ARDOUR_UI::config());
+	UIConfiguration::Modifiers& modifiers (uic->modifiers);
+	Gtk::HBox* mod_hbox;
+	Gtk::Label* mod_label;
+	Gtk::HScale* mod_scale;
+	
+	Gtkmm2ext::container_clear (modifier_vbox);
+
+	for (UIConfiguration::Modifiers::const_iterator m = modifiers.begin(); m != modifiers.end(); ++m) {
+		mod_hbox = manage (new HBox);
+
+		mod_scale = manage (new HScale (0.0, 1.0, 0.01));
+		mod_scale->set_draw_value (false);
+		mod_scale->set_value (m->second.a());
+		mod_scale->set_update_policy (Gtk::UPDATE_DISCONTINUOUS);
+		mod_scale->signal_value_changed().connect (sigc::bind (sigc::mem_fun (*this, &ThemeManager::modifier_edited), mod_scale, m->first));
+
+		mod_label = manage (new Label (m->first));
+		
+		mod_hbox->pack_start (*mod_label, false, true, 6);
+		mod_hbox->pack_start (*mod_scale, true, true);
+
+		modifier_vbox.pack_start (*mod_hbox, false, false);
+	}
+
+	modifier_vbox.show_all ();
+
+}
+
+void
+ThemeManager::modifier_edited (Gtk::Range* range, string name)
+{
+	using namespace ArdourCanvas;
+	
+	double alpha = range->get_value();
+	SVAModifier svam (SVAModifier::Assign, -1.0, -1.0, alpha);
+	ARDOUR_UI::config()->set_modifier (name, svam);
+}
+
 void
 ThemeManager::colors_changed ()
 {
 	setup_palette ();
 	setup_aliases ();	
+	setup_modifiers ();	
 }
 
 int
diff --git a/gtk2_ardour/theme_manager.h b/gtk2_ardour/theme_manager.h
index f023076c97..e9a12b185e 100644
--- a/gtk2_ardour/theme_manager.h
+++ b/gtk2_ardour/theme_manager.h
@@ -161,6 +161,12 @@ class ThemeManager : public ArdourWindow
 	void setup_aliases ();
 	void setup_palette ();
 
+	Gtk::ScrolledWindow modifier_scroller;
+	Gtk::VBox modifier_vbox;
+	
+	void setup_modifiers ();
+	void modifier_edited (Gtk::Range*, std::string);
+	
 	void colors_changed ();
 };
 
diff --git a/gtk2_ardour/ui_config.cc b/gtk2_ardour/ui_config.cc
index 629b20dcdd..70e77e3345 100644
--- a/gtk2_ardour/ui_config.cc
+++ b/gtk2_ardour/ui_config.cc
@@ -68,6 +68,7 @@ UIConfiguration::UIConfiguration ()
 	_dirty (false),
 	aliases_modified (false),
 	colors_modified (false),
+	modifiers_modified (false),
 	block_save (0)
 {
 	_instance = this;
@@ -354,7 +355,7 @@ UIConfiguration::save_state()
 		_dirty = false;
 	}
 
-	if (aliases_modified || colors_modified) {
+	if (aliases_modified || colors_modified || modifiers_modified) {
 
 		if (store_color_theme ()) {
 			error << string_compose (_("Color file %1 not saved"), color_file.get()) << endmsg;
@@ -363,6 +364,7 @@ UIConfiguration::save_state()
 
 		aliases_modified = false;
 		colors_modified = false;
+		modifiers_modified = false;
 	}
 	
 
@@ -628,6 +630,21 @@ UIConfiguration::set_alias (string const & name, string const & alias)
 	ARDOUR_UI_UTILS::ColorsChanged (); /* EMIT SIGNAL */
 }
 
+void
+UIConfiguration::set_modifier (string const & name, SVAModifier svam)
+{
+	Modifiers::iterator m = modifiers.find (name);
+
+	if (m == modifiers.end()) {
+		return;
+	}
+
+	m->second = svam;
+	modifiers_modified = true;
+
+	ARDOUR_UI_UTILS::ColorsChanged (); /* EMIT SIGNAL */
+}
+
 void
 UIConfiguration::load_rc_file (bool themechange, bool allow_own)
 {
diff --git a/gtk2_ardour/ui_config.h b/gtk2_ardour/ui_config.h
index b30c76fa11..c8dcbacf12 100644
--- a/gtk2_ardour/ui_config.h
+++ b/gtk2_ardour/ui_config.h
@@ -64,6 +64,7 @@ class UIConfiguration : public PBD::Stateful
 
 	void set_alias (std::string const & name, std::string const & alias);
 	void set_color (const std::string& name, ArdourCanvas::Color);
+	void set_modifier (std::string const &, ArdourCanvas::SVAModifier svam);
 	
 	std::string color_as_alias (ArdourCanvas::Color c);
 	ArdourCanvas::Color quantized (ArdourCanvas::Color) const;
@@ -106,6 +107,7 @@ class UIConfiguration : public PBD::Stateful
 	bool _dirty;
 	bool aliases_modified;
 	bool colors_modified;
+	bool modifiers_modified;
 	
 	static UIConfiguration* _instance;