first pass at moving color theme management into its own preferences tab

1 files changed, 553 insertions, 0 deletions

diff --git a/gtk2_ardour/color_theme_manager.cc b/gtk2_ardour/color_theme_manager.cc
new file mode 100644
index 0000000000..c3d0765726
--- /dev/null
+++ b/gtk2_ardour/color_theme_manager.cc
@@ -0,0 +1,553 @@
+/*
+    Copyright (C) 2000-2007 Paul Davis
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#include <cmath>
+#include <errno.h>
+
+#include "fix_carbon.h"
+
+#include "pbd/gstdio_compat.h"
+
+#include <gtkmm/stock.h>
+#include <gtkmm/settings.h>
+
+#include "gtkmm2ext/gtk_ui.h"
+#include "gtkmm2ext/cell_renderer_color_selector.h"
+#include "gtkmm2ext/utils.h"
+
+#include "pbd/file_utils.h"
+#include "pbd/compose.h"
+
+#include "ardour/filesystem_paths.h"
+#include "ardour/profile.h"
+
+#include "canvas/container.h"
+#include "canvas/rectangle.h"
+#include "canvas/scroll_group.h"
+#include "canvas/wave_view.h"
+
+#include "ardour_button.h"
+#include "ardour_dialog.h"
+#include "color_theme_manager.h"
+#include "rgb_macros.h"
+#include "ui_config.h"
+#include "utils.h"
+
+#include "i18n.h"
+
+using namespace std;
+using namespace Gtk;
+using namespace PBD;
+using namespace ARDOUR;
+using namespace ARDOUR_UI_UTILS;
+
+ColorThemeManager::ColorThemeManager ()
+	: reset_button (_("Restore Defaults"))
+	, palette_viewport (*palette_scroller.get_hadjustment(), *palette_scroller.get_vadjustment())
+	, palette_group (0)
+	, palette_window (0)
+{
+	reset_button.signal_clicked().connect (sigc::mem_fun (*this, &ColorThemeManager::reset_canvas_colors));
+
+	/* Now the alias list */
+
+	alias_list = TreeStore::create (alias_columns);
+	alias_display.set_model (alias_list);
+	alias_display.append_column (_("Object"), alias_columns.name);
+
+	Gtkmm2ext::CellRendererColorSelector* color_renderer = manage (new Gtkmm2ext::CellRendererColorSelector);
+	TreeViewColumn* color_column = manage (new TreeViewColumn (_("Color"), *color_renderer));
+	color_column->add_attribute (color_renderer->property_color(), alias_columns.color);
+	alias_display.append_column (*color_column);
+
+	alias_display.get_column (0)->set_data (X_("colnum"), GUINT_TO_POINTER(0));
+	alias_display.get_column (0)->set_expand (true);
+	alias_display.get_column (1)->set_data (X_("colnum"), GUINT_TO_POINTER(1));
+	alias_display.get_column (1)->set_expand (false);
+	alias_display.set_reorderable (false);
+	alias_display.set_headers_visible (true);
+
+	alias_display.signal_button_press_event().connect (sigc::mem_fun (*this, &ColorThemeManager::alias_button_press_event), false);
+
+	alias_scroller.add (alias_display);
+
+	palette_group = initialize_palette_canvas (*palette_viewport.canvas());
+	palette_viewport.signal_size_allocate().connect (sigc::bind (sigc::mem_fun (*this, &ColorThemeManager::palette_canvas_allocated), palette_group, palette_viewport.canvas(),
+								     sigc::mem_fun (*this, &ColorThemeManager::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, _("Transparency"));
+
+	notebook.set_size_request (400, 400);
+
+	set_spacing (12);
+	pack_start (reset_button, false, false);
+	pack_start (notebook, true, true);
+
+	/* no need to call setup_palette() here, it will be done when its size is allocated */
+	setup_aliases ();
+	setup_modifiers ();
+
+	UIConfiguration::instance().ColorsChanged.connect (sigc::mem_fun (*this, &ColorThemeManager::colors_changed));
+
+	show_all ();
+}
+
+void
+ColorThemeManager::setup_modifiers ()
+{
+	UIConfiguration* uic (&UIConfiguration::instance());
+	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, &ColorThemeManager::modifier_edited), mod_scale, m->first));
+
+		mod_label = manage (new Label (m->first));
+		mod_label->set_alignment (1.0, 0.5);
+		mod_label->set_size_request (150, -1); /* 150 pixels should be enough for anyone */
+
+		mod_hbox->pack_start (*mod_label, false, true, 12);
+		mod_hbox->pack_start (*mod_scale, true, true);
+
+		modifier_vbox.pack_start (*mod_hbox, false, false);
+	}
+
+	modifier_vbox.show_all ();
+
+}
+
+void
+ColorThemeManager::modifier_edited (Gtk::Range* range, string name)
+{
+	using namespace ArdourCanvas;
+
+	double alpha = range->get_value();
+	SVAModifier svam (SVAModifier::Assign, -1.0, -1.0, alpha);
+	UIConfiguration::instance().set_modifier (name, svam);
+}
+
+void
+ColorThemeManager::colors_changed ()
+{
+	setup_palette ();
+	setup_aliases ();
+	setup_modifiers ();
+}
+
+void
+ColorThemeManager::reset_canvas_colors()
+{
+	string cfile;
+	string basename;
+
+	basename = UIConfiguration::instance().color_file_name (true, true, true);
+
+	if (find_file (ardour_config_search_path(), basename, cfile)) {
+		string backup = cfile + string (X_(".old"));
+		g_rename (cfile.c_str(), backup.c_str());
+		/* don't really care if it fails */
+	}
+
+	UIConfiguration::instance().load_defaults();
+	UIConfiguration::instance().save_state ();
+}
+
+ArdourCanvas::Container*
+ColorThemeManager::initialize_palette_canvas (ArdourCanvas::Canvas& canvas)
+{
+	using namespace ArdourCanvas;
+
+	/* hide background */
+	canvas.set_background_color (rgba_to_color (0.0, 0.0, 1.0, 0.0));
+
+	/* bi-directional scroll group */
+
+	ScrollGroup* scroll_group = new ScrollGroup (canvas.root(), ScrollGroup::ScrollSensitivity (ScrollGroup::ScrollsVertically|ScrollGroup::ScrollsHorizontally));
+	canvas.add_scroller (*scroll_group);
+
+	/* new container to hold everything */
+
+	return new ArdourCanvas::Container (scroll_group);
+}
+
+void
+ColorThemeManager::palette_canvas_allocated (Gtk::Allocation& alloc, ArdourCanvas::Container* group, ArdourCanvas::Canvas* canvas, sigc::slot<bool,GdkEvent*,std::string> event_handler)
+{
+	build_palette_canvas (*canvas, *group, event_handler);
+}
+
+struct NamedColor {
+	string name;
+	ArdourCanvas::HSV    color;
+	NamedColor (string s, ArdourCanvas::HSV c) : name (s), color (c) {}
+};
+
+struct SortByHue {
+	bool operator() (NamedColor const & a, NamedColor const & b) {
+		using namespace ArdourCanvas;
+		const HSV black (0, 0, 0);
+		if (a.color.is_gray() || b.color.is_gray()) {
+			return black.distance (a.color) < black.distance (b.color);
+		} else {
+			return a.color.h < b.color.h;
+			// const HSV red (rgba_to_color (1.0, 0.0, 0.0, 1.0));
+			// return red.distance (a.color) < red.distance (b.color);
+		}
+	}
+};
+
+
+void
+ColorThemeManager::build_palette_canvas (ArdourCanvas::Canvas& canvas, ArdourCanvas::Container& group, sigc::slot<bool,GdkEvent*,std::string> event_handler)
+{
+	using namespace ArdourCanvas;
+
+	/* we want the colors sorted by hue, with their name */
+
+	UIConfiguration::Colors& colors (UIConfiguration::instance().colors);
+	vector<NamedColor> nc;
+	for (UIConfiguration::Colors::const_iterator x = colors.begin(); x != colors.end(); ++x) {
+		nc.push_back (NamedColor (x->first, HSV (x->second)));
+	}
+	SortByHue sorter;
+	sort (nc.begin(), nc.end(), sorter);
+
+	const uint32_t color_limit = nc.size();
+	const double box_size = 20.0;
+	const double width = canvas.width();
+	const double height = canvas.height();
+
+	uint32_t color_num = 0;
+
+	/* clear existing rects and delete them */
+
+	group.clear (true);
+
+	for (uint32_t y = 0; y < height - box_size && color_num < color_limit; y += box_size) {
+		for (uint32_t x = 0; x < width - box_size && color_num < color_limit; x += box_size) {
+			ArdourCanvas::Rectangle* r = new ArdourCanvas::Rectangle (&group, ArdourCanvas::Rect (x, y, x + box_size, y + box_size));
+
+			string name = nc[color_num++].name;
+
+			UIConfiguration::Colors::iterator c = colors.find (name);
+
+			if (c != colors.end()) {
+				Color color = c->second;
+				r->set_fill_color (color);
+				r->set_outline_color (rgba_to_color (0.0, 0.0, 0.0, 1.0));
+				r->set_tooltip (name);
+				r->Event.connect (sigc::bind (event_handler, name));
+			}
+		}
+	}
+}
+
+void
+ColorThemeManager::palette_size_request (Gtk::Requisition* req)
+{
+	uint32_t ncolors = UIConfiguration::instance().colors.size();
+	const int box_size = 20;
+
+	double c = sqrt ((double)ncolors);
+	req->width = (int) floor (c * box_size);
+	req->height = (int) floor (c * box_size);
+
+	/* add overflow row if necessary */
+
+	if (fmod (ncolors, c) != 0.0) {
+		req->height += box_size;
+	}
+}
+
+void
+ColorThemeManager::setup_palette ()
+{
+	build_palette_canvas (*palette_viewport.canvas(), *palette_group, sigc::mem_fun (*this, &ColorThemeManager::palette_event));
+}
+
+bool
+ColorThemeManager::palette_event (GdkEvent* ev, string name)
+{
+	switch (ev->type) {
+	case GDK_BUTTON_RELEASE:
+		edit_palette_color (name);
+		return true;
+	default:
+		break;
+	}
+	return true;
+}
+
+void
+ColorThemeManager::edit_palette_color (std::string name)
+{
+	using namespace ArdourCanvas;
+	double r,g, b, a;
+	UIConfiguration* uic (&UIConfiguration::instance());
+	ArdourCanvas::Color c = uic->color (name);
+	Gdk::Color gdkcolor;
+
+	color_to_rgba (c, r, g, b, a);
+
+	gdkcolor.set_rgb_p (r, g, b);
+	color_dialog.get_colorsel()->set_previous_color (gdkcolor);
+	color_dialog.get_colorsel()->set_current_color (gdkcolor);
+	color_dialog.get_colorsel()->set_previous_alpha ((guint16) (a * 65535));
+	color_dialog.get_colorsel()->set_current_alpha ((guint16) (a * 65535));
+
+	color_dialog_connection.disconnect ();
+	color_dialog_connection = color_dialog.signal_response().connect (sigc::bind (sigc::mem_fun (*this, &ColorThemeManager::palette_color_response), name));
+	color_dialog.present();
+}
+
+void
+ColorThemeManager::palette_color_response (int result, std::string name)
+{
+	using namespace ArdourCanvas;
+
+	color_dialog_connection.disconnect ();
+
+	UIConfiguration* uic (&UIConfiguration::instance());
+	Gdk::Color gdkcolor;
+	double r,g, b, a;
+
+	switch (result) {
+	case RESPONSE_ACCEPT:
+	case RESPONSE_OK:
+		gdkcolor = color_dialog.get_colorsel()->get_current_color();
+		a = color_dialog.get_colorsel()->get_current_alpha() / 65535.0;
+		r = gdkcolor.get_red_p();
+		g = gdkcolor.get_green_p();
+		b = gdkcolor.get_blue_p();
+
+		uic->set_color (name, rgba_to_color (r, g, b, a));
+		break;
+
+	default:
+		break;
+	}
+
+	color_dialog.hide ();
+}
+
+bool
+ColorThemeManager::alias_palette_event (GdkEvent* ev, string new_alias, string target_name)
+{
+	switch (ev->type) {
+	case GDK_BUTTON_RELEASE:
+		UIConfiguration::instance().set_alias (target_name, new_alias);
+		return true;
+		break;
+	default:
+		break;
+	}
+	return false;
+}
+
+void
+ColorThemeManager::alias_palette_response (int response, std::string target_name, std::string old_alias)
+{
+	switch (response) {
+	case GTK_RESPONSE_OK:
+	case GTK_RESPONSE_ACCEPT:
+		/* rebuild alias list with new color: inefficient but simple */
+		setup_aliases ();
+		break;
+
+	case GTK_RESPONSE_REJECT:
+		/* revert choice */
+		UIConfiguration::instance().set_alias (target_name, old_alias);
+		break;
+
+	default:
+		/* do nothing */
+		break;
+	}
+
+	palette_window->hide ();
+}
+
+void
+ColorThemeManager::choose_color_from_palette (string const & name)
+{
+	UIConfiguration* uic (&UIConfiguration::instance());
+	UIConfiguration::ColorAliases::iterator i = uic->color_aliases.find (name);
+
+	if (i == uic->color_aliases.end()) {
+		return;
+	}
+
+	delete palette_window;
+
+	palette_window = new ArdourDialog (_("Color Palette"));
+	palette_window->add_button (Stock::CANCEL, RESPONSE_REJECT); /* using CANCEL causes confusion if dialog is closed via CloseAllDialogs */
+	palette_window->add_button (Stock::OK, RESPONSE_OK);
+
+	ArdourCanvas::GtkCanvas* canvas = new ArdourCanvas::GtkCanvas ();
+	ArdourCanvas::Container* group = initialize_palette_canvas (*canvas);
+
+	canvas->signal_size_request().connect (sigc::mem_fun (*this, &ColorThemeManager::palette_size_request));
+	canvas->signal_size_allocate().connect (sigc::bind (sigc::mem_fun (*this, &ColorThemeManager::palette_canvas_allocated), group, canvas,
+							    sigc::bind (sigc::mem_fun (*this, &ColorThemeManager::alias_palette_event), name)));
+
+	palette_window->get_vbox()->pack_start (*canvas);
+	palette_window->show_all ();
+
+	palette_response_connection = palette_window->signal_response().connect (sigc::bind (sigc::mem_fun (*this, &ColorThemeManager::alias_palette_response), name, i->second));
+
+	palette_window->set_position (WIN_POS_MOUSE);
+	palette_window->present ();
+}
+
+void
+ColorThemeManager::setup_aliases ()
+{
+	using namespace ArdourCanvas;
+
+	UIConfiguration* uic (&UIConfiguration::instance());
+	UIConfiguration::ColorAliases& aliases (uic->color_aliases);
+
+	alias_list->clear ();
+
+	for (UIConfiguration::ColorAliases::iterator i = aliases.begin(); i != aliases.end(); ++i) {
+		TreeModel::Children rows = alias_list->children();
+		TreeModel::Row row;
+		string::size_type colon;
+
+		if ((colon = i->first.find (':')) != string::npos) {
+
+			/* this is supposed to be a child node, so find the
+			 * parent
+			 */
+
+			string parent = i->first.substr (0, colon);
+			TreeModel::iterator ri;
+
+			for (ri = rows.begin(); ri != rows.end(); ++ri) {
+				string s = (*ri)[alias_columns.name];
+				if (s == parent) {
+					break;
+				}
+			}
+
+			if (ri == rows.end()) {
+				/* not found, add the parent as new top level row */
+				row = *(alias_list->append());
+				row[alias_columns.name] = parent;
+				row[alias_columns.alias] = "";
+
+				/* now add the child as a child of this one */
+
+				row = *(alias_list->insert (row->children().end()));
+				row[alias_columns.name] = i->first.substr (colon+1);
+			} else {
+				row = *(alias_list->insert ((*ri)->children().end()));
+				row[alias_columns.name] = i->first.substr (colon+1);
+			}
+
+		} else {
+			/* add as a child */
+			row = *(alias_list->append());
+			row[alias_columns.name] = i->first;
+			row[alias_columns.key] = i->first;
+		}
+
+		row[alias_columns.key] = i->first;
+		row[alias_columns.alias] = i->second;
+
+		Gdk::Color col;
+		double r, g, b, a;
+		Color c (uic->color (i->second));
+		color_to_rgba (c, r, g, b, a);
+		col.set_rgb_p (r, g, b);
+
+		row[alias_columns.color] = col;
+	}
+}
+
+bool
+ColorThemeManager::alias_button_press_event (GdkEventButton* ev)
+{
+	TreeIter iter;
+	TreeModel::Path path;
+	TreeViewColumn* column;
+	int cellx;
+	int celly;
+
+	if (!alias_display.get_path_at_pos ((int)ev->x, (int)ev->y, path, column, cellx, celly)) {
+		return false;
+	}
+
+	guint32 colnum = GPOINTER_TO_UINT (column->get_data (X_("colnum")));
+
+	switch (colnum) {
+	case 0:
+		/* allow normal processing to occur */
+		return false;
+
+	case 1: /* color */
+		if ((iter = alias_list->get_iter (path))) {
+			string target_color_alias = (*iter)[alias_columns.key];
+			if (!target_color_alias.empty()) {
+				choose_color_from_palette (target_color_alias);
+			}
+		}
+		break;
+	}
+
+	return true;
+}
+
+void
+ColorThemeManager::parameter_changed (string const&)
+{
+}
+
+void
+ColorThemeManager::set_state_from_config ()
+{
+
+}
+
+void
+ColorThemeManager::add_to_page (OptionEditorPage* page)
+{
+	add_widget_to_page (page, this);
+}
+
+Gtk::Widget&
+ColorThemeManager::tip_widget()
+{
+	return reset_button; /* XXX need a better widget for this purpose */
+}