libs/gtkmm2ext/stateful_button.cc

   1 #include <string>
   2 #include <iostream>
   3 #include "gtkmm2ext/stateful_button.h"
   4
   5 using namespace Gtk;
   6 using namespace Glib;
   7 using namespace Gtkmm2ext;
   8 using namespace std;
   9
  10 StatefulButton::StatefulButton ()
  11 {
  12         current_state = 0;
  13         have_saved_bg = false;
  14 }
  15
  16 StatefulButton::StatefulButton (const string& label)
  17         : Button (label)
  18 {
  19         current_state = 0;
  20         have_saved_bg = false;
  21 }
  22
  23 void
  24 StatefulButton::set_colors (const vector<Gdk::Color>& c)
  25 {
  26         colors = c;
  27         current_state++; // to force transition
  28         set_state (current_state - 1);
  29 }
  30
  31 void
  32 StatefulButton::on_realize ()
  33 {
  34         Button::on_realize ();
  35
  36         if (!have_saved_bg) {
  37                 saved_bg = get_style()->get_bg (STATE_NORMAL);
  38                 have_saved_bg = true;
  39         }
  40
  41         current_state++; // to force transition
  42         set_state (current_state - 1);
  43 }
  44
  45 void
  46 StatefulButton::set_state (int n)
  47 {
  48         if (is_realized()) {
  49
  50                 if (n == current_state) {
  51                         return;
  52                 }
  53
  54                 if (n == 0) {
  55
  56                         /* back to the default color */
  57
  58                         if (have_saved_bg) {
  59                                 modify_bg (STATE_NORMAL, saved_bg);
  60                                 modify_bg (STATE_ACTIVE, saved_bg);
  61                                 modify_bg (STATE_SELECTED, saved_bg);
  62                                 modify_bg (STATE_PRELIGHT, saved_bg);
  63                         }
  64
  65
  66                 } else {
  67
  68                         int index = (n-1) % colors.size ();
  69
  70                         modify_bg (STATE_NORMAL, colors[index]);
  71                         modify_bg (STATE_ACTIVE, colors[index]);
  72                         modify_bg (STATE_SELECTED, colors[index]);
  73                         modify_bg (STATE_PRELIGHT, colors[index]);
  74                 }
  75
  76                 /* leave insensitive alone */
  77         }
  78
  79         current_state = n;
  80 }