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theme_manager.cc

/*
    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 <iostream>
#include <fstream>
#include <errno.h>

#include <gtkmm/stock.h>
#include <gtkmm2ext/gtk_ui.h>
#include <gtkmm/settings.h>

#include <ardour/profile.h>

#include "theme_manager.h"
#include "rgb_macros.h"
#include "ardour_ui.h"

#include "i18n.h"

using namespace std;
using namespace Gtk;
using namespace PBD;
using namespace ARDOUR;


sigc::signal<void> ColorsChanged;
sigc::signal<void,uint32_t> ColorChanged;

ThemeManager::ThemeManager()
      : ArdourDialog ("ThemeManager"),
      dark_button ("Dark Theme"),
      light_button ("Light Theme"),
      reset_button ("Restore Defaults")
{
      color_list = ListStore::create (columns);
      color_display.set_model (color_list);
      color_display.append_column (_("Object"), columns.name);
      color_display.append_column (_("Color"), columns.color);
      color_display.get_column (0)->set_data (X_("colnum"), GUINT_TO_POINTER(0));   
      color_display.get_column (1)->set_data (X_("colnum"), GUINT_TO_POINTER(1));   
      color_display.set_reorderable (false);
      color_display.get_selection()->set_mode (SELECTION_NONE);
      color_display.set_headers_visible (true);

      CellRenderer* color_cell = color_display.get_column_cell_renderer (1);
      TreeViewColumn* color_column = color_display.get_column (1);
      color_column->add_attribute (color_cell->property_cell_background_gdk(), columns.gdkcolor);
      
      scroller.add (color_display);
      scroller.set_policy (POLICY_NEVER, POLICY_AUTOMATIC);
      
      RadioButton::Group group = dark_button.get_group();
      light_button.set_group(group);
      theme_selection_hbox.set_homogeneous(false);
      theme_selection_hbox.pack_start (dark_button);
      theme_selection_hbox.pack_start (light_button);

      get_vbox()->set_homogeneous(false);
      get_vbox()->pack_start (theme_selection_hbox, PACK_SHRINK);
      get_vbox()->pack_start (reset_button, PACK_SHRINK);
      get_vbox()->pack_start (scroller);

      color_display.signal_button_press_event().connect (mem_fun (*this, &ThemeManager::button_press_event), false);

      color_dialog.get_colorsel()->set_has_opacity_control (true);
      color_dialog.get_colorsel()->set_has_palette (true);

      color_dialog.get_ok_button()->signal_clicked().connect (bind (mem_fun (color_dialog, &Gtk::Dialog::response), RESPONSE_ACCEPT));
      color_dialog.get_cancel_button()->signal_clicked().connect (bind (mem_fun (color_dialog, &Gtk::Dialog::response), RESPONSE_CANCEL));
      dark_button.signal_toggled().connect (mem_fun (*this, &ThemeManager::on_dark_theme_button_toggled));
      light_button.signal_toggled().connect (mem_fun (*this, &ThemeManager::on_light_theme_button_toggled));
      reset_button.signal_clicked().connect (mem_fun (*this, &ThemeManager::reset_canvas_colors));

      set_size_request (-1, 400);
      setup_theme ();
}

ThemeManager::~ThemeManager()
{
}

int
ThemeManager::save (string path)
{
      return 0;
}

bool
ThemeManager::button_press_event (GdkEventButton* ev)
{
      TreeIter iter;
      TreeModel::Path path;
      TreeViewColumn* column;
      int cellx;
      int celly;

      UIConfigVariable<uint32_t> *ccvar;
      
      if (!color_display.get_path_at_pos ((int)ev->x, (int)ev->y, path, column, cellx, celly)) {
            return false;
      }

      switch (GPOINTER_TO_UINT (column->get_data (X_("colnum")))) {
      case 0:
            /* allow normal processing to occur */
            return false;

      case 1: /* color */
            if ((iter = color_list->get_iter (path))) {

                  int r,g, b, a;
                  uint32_t rgba = (*iter)[columns.rgba];
                  Gdk::Color color;

                  UINT_TO_RGBA (rgba, &r, &g, &b, &a);
                  color.set_rgb_p (r / 255.0, g / 255.0, b / 255.0);
                  color_dialog.get_colorsel()->set_previous_color (color);
                  color_dialog.get_colorsel()->set_current_color (color);
                  color_dialog.get_colorsel()->set_previous_alpha (a * 256);
                  color_dialog.get_colorsel()->set_current_alpha (a * 256);

                  ResponseType result = (ResponseType) color_dialog.run();

                  switch (result) {
                  case RESPONSE_CANCEL:
                        break;
                  case RESPONSE_ACCEPT:
                        color = color_dialog.get_colorsel()->get_current_color(); 
                        a = color_dialog.get_colorsel()->get_current_alpha();
                        r = (int) floor (color.get_red_p() * 255.0);
                        g = (int) floor (color.get_green_p() * 255.0);
                        b = (int) floor (color.get_blue_p() * 255.0);

                        rgba = RGBA_TO_UINT(r,g,b,a>>8);
                        //cerr << (*iter)[columns.name] << " == " << hex << rgba << endl;
                        //cerr << "a = " << a << endl;
                        (*iter)[columns.rgba] = rgba;
                        (*iter)[columns.gdkcolor] = color;

                        ccvar = (*iter)[columns.pVar];
                        ccvar->set(rgba);

                        //ColorChanged (rgba);
                        ColorsChanged();//EMIT SIGNAL
                        break;

                  default:
                        break;

                  }

                  color_dialog.hide ();
            }
            return true;

      default:
            break;
      }

      return false;
}

void
load_rc_file (const string& filename, bool themechange)
{
      std::string rcfile = find_config_file(filename);

      if(!rcfile.length())
      {
            warning << string_compose(_("Unable to find UI style file %1. Ardour will look strange"), rcfile) << endmsg;
            return;
      }

      cerr << "Loading ui configuration file " << rcfile << endl;

      Gtkmm2ext::UI::instance()->load_rcfile (rcfile, themechange);
}

/* hmm, this is a problem. the profile doesn't
   exist when the theme manager is constructed
   and toggles buttons during "normal" GTK setup.
   
   a better solution will be to make all Profile
   methods static or something.

   XXX FIX ME
*/

#define HACK_PROFILE_IS_SAE() (getenv("ARDOUR_SAE")!=0)

void
ThemeManager::on_dark_theme_button_toggled()
{
      if (!dark_button.get_active()) return;
      if (HACK_PROFILE_IS_SAE()){
            ARDOUR_UI::config()->ui_rc_file.set("ardour2_ui_dark_sae.rc");
      } else {
            ARDOUR_UI::config()->ui_rc_file.set("ardour2_ui_dark.rc");
      }
      load_rc_file (ARDOUR_UI::config()->ui_rc_file.get(), true);
}

void
ThemeManager::on_light_theme_button_toggled()
{
      if (!light_button.get_active()) return;
      if (HACK_PROFILE_IS_SAE()){
            ARDOUR_UI::config()->ui_rc_file.set("ardour2_ui_light_sae.rc");
      } else {
            ARDOUR_UI::config()->ui_rc_file.set("ardour2_ui_light.rc");
      }
      load_rc_file (ARDOUR_UI::config()->ui_rc_file.get(), true);
}

void
ThemeManager::setup_theme ()
{
      int r, g, b, a;
      color_list->clear();

      for (std::vector<UIConfigVariable<uint32_t> *>::iterator i = ARDOUR_UI::config()->canvas_colors.begin(); i != ARDOUR_UI::config()->canvas_colors.end(); i++) {
            
            TreeModel::Row row = *(color_list->append());

            Gdk::Color col;
            uint32_t rgba = (*i)->get();
            UINT_TO_RGBA (rgba, &r, &g, &b, &a);
            //cerr << (*i)->name() << " == " << hex << rgba << ": " << hex << r << " " << hex << g << " " << hex << b << endl;
            col.set_rgb_p (r / 255.0, g / 255.0, b / 255.0);

            row[columns.name] = (*i)->name();
            row[columns.color] = "";
            row[columns.pVar] = *i;
            row[columns.rgba] = rgba;
            row[columns.gdkcolor] = col;

      }

      ColorsChanged.emit();

      bool env_defined = false;
      string rcfile = Glib::getenv("ARDOUR2_UI_RC", env_defined);

      if(!env_defined) {
            rcfile = ARDOUR_UI::config()->ui_rc_file.get();
      }

      if (rcfile == "ardour2_ui_dark.rc" || rcfile == "ardour2_ui_dark_sae.rc") {
            dark_button.set_active();
      } else if (rcfile == "ardour2_ui_light.rc" || "ardour2_ui_light_sae.rc") {
            light_button.set_active();
      }

      load_rc_file(rcfile, false);
}

void
ThemeManager::reset_canvas_colors()
{
      ARDOUR_UI::config()->load_defaults();
      setup_theme ();
}


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