button hacks and more

[ardour.git] / libs / gtkmm2ext / stateful_button.cc

diff --git a/libs/gtkmm2ext/stateful_button.cc b/libs/gtkmm2ext/stateful_button.cc
new file mode 100644 (file)
index 0000000..074d086
--- /dev/null
+++ b/libs/gtkmm2ext/stateful_button.cc
@@ -0,0 +1,80 @@
+#include <string>
+#include <iostream>
+#include "gtkmm2ext/stateful_button.h"
+
+using namespace Gtk;
+using namespace Glib;
+using namespace Gtkmm2ext;
+using namespace std;
+
+StatefulButton::StatefulButton ()
+{
+       current_state = 0;
+       have_saved_bg = false;
+}
+
+StatefulButton::StatefulButton (const string& label)
+       : Button (label)
+{
+       current_state = 0;
+       have_saved_bg = false;
+}
+
+void
+StatefulButton::set_colors (const vector<Gdk::Color>& c)
+{
+       colors = c;
+       current_state++; // to force transition
+       set_state (current_state - 1);
+}
+
+void
+StatefulButton::on_realize ()
+{
+       Button::on_realize ();
+
+       if (!have_saved_bg) {
+               saved_bg = get_style()->get_bg (STATE_NORMAL);
+               have_saved_bg = true;
+       }
+
+       current_state++; // to force transition
+       set_state (current_state - 1);
+}
+
+void
+StatefulButton::set_state (int n)
+{
+       if (is_realized()) {
+
+               if (n == current_state) {
+                       return;
+               }
+               
+               if (n == 0) {
+                       
+                       /* back to the default color */
+                       
+                       if (have_saved_bg) {
+                               modify_bg (STATE_NORMAL, saved_bg);
+                               modify_bg (STATE_ACTIVE, saved_bg);
+                               modify_bg (STATE_SELECTED, saved_bg);
+                               modify_bg (STATE_PRELIGHT, saved_bg);
+                       }
+                       
+
+               } else {
+                       
+                       int index = (n-1) % colors.size ();
+                       
+                       modify_bg (STATE_NORMAL, colors[index]);
+                       modify_bg (STATE_ACTIVE, colors[index]);
+                       modify_bg (STATE_SELECTED, colors[index]);
+                       modify_bg (STATE_PRELIGHT, colors[index]);
+               }
+               
+               /* leave insensitive alone */
+       }
+
+       current_state = n;
+}