gtk2_ardour/button_joiner.cc

   1 #include <iostream>
   2 #include <algorithm>
   3
   4
   5 #include <gtkmm/toggleaction.h>
   6
   7 #include "pbd/compose.h"
   8 #include "gtkmm2ext/utils.h"
   9 #include "gtkmm2ext/rgb_macros.h"
  10
  11 #include "ardour_ui.h"
  12 #include "button_joiner.h"
  13
  14 using namespace Gtk;
  15
  16 ButtonJoiner::ButtonJoiner (const std::string& str, Gtk::Widget& lw, Gtk::Widget& rw, bool central_joiner)
  17         : left (lw)
  18         , right (rw)
  19         , name (str)
  20         , active_fill_pattern (0)
  21         , inactive_fill_pattern (0)
  22         , central_link (central_joiner)
  23 {
  24         packer.set_homogeneous (true);
  25
  26         if (central_link) {
  27                 packer.set_spacing (20);
  28         }
  29
  30         packer.pack_start (left);
  31         packer.pack_start (right);
  32         packer.show ();
  33
  34         /* this alignment is how we position the box that holds the two widgets
  35            within our allocation, and how we request more space around them.
  36         */
  37
  38         align.add (packer);
  39
  40         if (!central_link) {
  41                 align.set (0.5, 1.0);
  42                 align.set_padding (9, 0, 9, 9);
  43         } else {
  44                 align.set (0.5, 0.5);
  45                 align.set_padding (1, 1, 1, 1);
  46         }
  47
  48         align.show ();
  49
  50         add (align);
  51
  52         add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK|
  53                     Gdk::ENTER_NOTIFY_MASK|Gdk::LEAVE_NOTIFY_MASK);
  54
  55         uint32_t border_color;
  56         uint32_t r, g, b, a;
  57
  58         border_color = ARDOUR_UI::config()->color_by_name (string_compose ("%1: border end", name));
  59         UINT_TO_RGBA (border_color, &r, &g, &b, &a);
  60
  61         border_r = r/255.0;
  62         border_g = g/255.0;
  63         border_b = b/255.0;
  64
  65         /* child cairo widgets need the color of the inner edge as their
  66          * "background"
  67          */
  68
  69         Gdk::Color col;
  70         col.set_rgb_p (border_r, border_g, border_b);
  71         provide_background_for_cairo_widget (*this, col);
  72 }
  73
  74 ButtonJoiner::~ButtonJoiner ()
  75 {
  76         if (active_fill_pattern) {
  77                 cairo_pattern_destroy (active_fill_pattern);
  78                 cairo_pattern_destroy (inactive_fill_pattern);
  79         }
  80 }
  81
  82 void
  83 ButtonJoiner::render (cairo_t* cr)
  84 {
  85         double h = get_height();
  86
  87         if (!get_active()) {
  88                 cairo_set_source (cr, inactive_fill_pattern);
  89         } else {
  90                 cairo_set_source (cr, active_fill_pattern);
  91         }
  92
  93         if (!central_link) {
  94                 /* outer rect */
  95
  96                 Gtkmm2ext::rounded_top_rectangle (cr, 0, 0, get_width(), h, 8);
  97                 cairo_fill_preserve (cr);
  98
  99                 /* outer edge */
 100
 101                 cairo_set_line_width (cr, 1.5);
 102                 cairo_set_source_rgb (cr, border_r, border_g, border_b);
 103                 cairo_stroke (cr);
 104
 105                 /* inner "edge" */
 106
 107                 Gtkmm2ext::rounded_top_rectangle (cr, 8, 8, get_width() - 16, h - 8, 6);
 108                 cairo_stroke (cr);
 109         } else {
 110                 if (get_active()) {
 111                         Gtkmm2ext::rounded_top_rectangle (cr, 0, 0, (get_width() - 20.0)/2.0 , h, 8);
 112                         cairo_fill_preserve (cr);
 113
 114                         Gtkmm2ext::rounded_top_rectangle (cr, (get_width() - 20.)/2.0 + 20.0, 0.0,
 115                                                           (get_width() - 20.0)/2.0 , h, 8);
 116                         cairo_fill_preserve (cr);
 117
 118                         cairo_move_to (cr, get_width()/2.0 - 10.0, h/2.0);
 119                         cairo_set_line_width (cr, 1.5);
 120                         cairo_rel_line_to (cr, 20.0, 0.0);
 121                         cairo_set_source (cr, active_fill_pattern);
 122                         cairo_stroke (cr);
 123                 } else {
 124                         cairo_arc (cr, get_width()/2.0, h/2.0, 6.0, 0, M_PI*2.0);
 125                         cairo_set_line_width (cr, 1.5);
 126                         cairo_fill_preserve (cr);
 127                         cairo_set_source_rgb (cr, border_r, border_g, border_b);
 128                         cairo_stroke (cr);
 129                 }
 130         }
 131 }
 132
 133 void
 134 ButtonJoiner::on_size_allocate (Allocation& alloc)
 135 {
 136         CairoWidget::on_size_allocate (alloc);
 137         set_colors ();
 138 }
 139
 140 bool
 141 ButtonJoiner::on_button_release_event (GdkEventButton* ev)
 142 {
 143         if (_action) {
 144                 _action->activate ();
 145         }
 146
 147         return true;
 148 }
 149
 150 void
 151 ButtonJoiner::on_size_request (Gtk::Requisition* r)
 152 {
 153         CairoWidget::on_size_request (r);
 154 }
 155
 156 void
 157 ButtonJoiner::set_related_action (Glib::RefPtr<Action> act)
 158 {
 159         Gtkmm2ext::Activatable::set_related_action (act);
 160
 161         if (_action) {
 162
 163                 action_tooltip_changed ();
 164
 165                 Glib::RefPtr<ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic (_action);
 166                 if (tact) {
 167                         action_toggled ();
 168                         tact->signal_toggled().connect (sigc::mem_fun (*this, &ButtonJoiner::action_toggled));
 169                 }
 170
 171                 _action->connect_property_changed ("sensitive", sigc::mem_fun (*this, &ButtonJoiner::action_sensitivity_changed));
 172                 _action->connect_property_changed ("visible", sigc::mem_fun (*this, &ButtonJoiner::action_visibility_changed));
 173                 _action->connect_property_changed ("tooltip", sigc::mem_fun (*this, &ButtonJoiner::action_tooltip_changed));
 174         }
 175 }
 176
 177 void
 178 ButtonJoiner::action_sensitivity_changed ()
 179 {
 180         if (_action->property_sensitive ()) {
 181                 set_visual_state (Gtkmm2ext::VisualState (visual_state() & ~Gtkmm2ext::Insensitive));
 182         } else {
 183                 set_visual_state (Gtkmm2ext::VisualState (visual_state() | Gtkmm2ext::Insensitive));
 184         }
 185
 186 }
 187
 188 void
 189 ButtonJoiner::action_visibility_changed ()
 190 {
 191         if (_action->property_visible ()) {
 192                 show ();
 193         } else {
 194                 hide ();
 195         }
 196 }
 197
 198 void
 199 ButtonJoiner::action_tooltip_changed ()
 200 {
 201         std::string str = _action->property_tooltip().get_value();
 202         ARDOUR_UI::instance()->set_tip (*this, str);
 203 }
 204
 205 void
 206 ButtonJoiner::action_toggled ()
 207 {
 208         Glib::RefPtr<ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic (_action);
 209
 210         if (tact) {
 211                 set_active (tact->get_active());
 212         }
 213 }
 214
 215 void
 216 ButtonJoiner::set_active_state (Gtkmm2ext::ActiveState s)
 217 {
 218         bool changed = (_active_state != s);
 219         CairoWidget::set_active_state (s);
 220         if (changed) {
 221                 set_colors ();
 222         }
 223 }
 224
 225 void
 226 ButtonJoiner::set_colors ()
 227 {
 228         uint32_t start_color;
 229         uint32_t end_color;
 230         uint32_t r, g, b, a;
 231
 232         if (active_fill_pattern) {
 233                 cairo_pattern_destroy (active_fill_pattern);
 234                 cairo_pattern_destroy (inactive_fill_pattern);
 235         }
 236
 237         active_fill_pattern = cairo_pattern_create_linear (0.0, 0.0, 0.0, get_height());
 238         inactive_fill_pattern = cairo_pattern_create_linear (0.0, 0.0, 0.0, get_height());
 239
 240         start_color = ARDOUR_UI::config()->color_by_name (string_compose ("%1: fill start", name));
 241         end_color = ARDOUR_UI::config()->color_by_name (string_compose ("%1: fill end", name));
 242         UINT_TO_RGBA (start_color, &r, &g, &b, &a);
 243         cairo_pattern_add_color_stop_rgba (inactive_fill_pattern, 0, r/255.0,g/255.0,b/255.0, a/255.0);
 244         UINT_TO_RGBA (end_color, &r, &g, &b, &a);
 245         cairo_pattern_add_color_stop_rgba (inactive_fill_pattern, 1, r/255.0,g/255.0,b/255.0, a/255.0);
 246
 247         start_color = ARDOUR_UI::config()->color_by_name (string_compose ("%1: fill start active", name));
 248         end_color = ARDOUR_UI::config()->color_by_name (string_compose ("%1: fill end active", name));
 249         UINT_TO_RGBA (start_color, &r, &g, &b, &a);
 250         cairo_pattern_add_color_stop_rgba (active_fill_pattern, 0, r/255.0,g/255.0,b/255.0, a/255.0);
 251         UINT_TO_RGBA (end_color, &r, &g, &b, &a);
 252         cairo_pattern_add_color_stop_rgba (active_fill_pattern, 1, r/255.0,g/255.0,b/255.0, a/255.0);
 253
 254         queue_draw ();
 255 }
 256