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POgtk: how to hide a window when the application loses focus
 

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  1. POgtk: how to hide a window when the application loses focus
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    <p>I want to duplicate the behaviour of tool windows in OpenOfice. When the application loses focus, the tool windows (if they are not docked) are hidden.</p> <p>So, I have a main window, and another utility window (<code>win_dock</code>). I want to hide <code>win_dock</code> when all the windows of the application loses focus and show it again if a window gain focus.</p> <p>What I did is that I connected to the focus-in-event and focus-out-event of all windows of the application, and I maintain a counter of how many windows have focus. When this counter drops to zero, I want to hide <code>win_dock</code>, and if this counter is positive again, I want to show <code>win_dock</code></p> <p>The problem is with this solution I can never focus <code>win_dock</code>. Because when I click on it, the main window drops the focus, so it hides <code>win_dock</code> that still hadn't gained the focus. Nevertheless the focus-in-event is still sent to <code>win_dock</code> and the windows reappears. But in the meantime it has lost the focus.</p> <p>Do you have a better solution?</p> <p>Here is the Vala source code:</p> <pre><code>public class Main { private Gtk.Builder builder; private Gtk.Window win_messages; private Gtk.Window win_dock; private int focus_count = 0; public Main() { builder = new Gtk.Builder(); builder.add_from_file("ui2.glade"); win_messages = builder.get_object("win_messages") as Gtk.Window; win_dock = builder.get_object("win_dock") as Gtk.Window; handle_focus(win_messages); handle_focus(win_dock); } public void start(){ win_messages.show_all(); //win_dock.show_all(); Gtk.main(); } private void handle_focus(Gtk.Window w) { w.focus_in_event.connect ((w, e) =&gt; { stdout.printf("Focus In (%s)\n", w.name); focus_count++; manage_focus(w == win_dock); }); w.focus_out_event.connect((w, e) =&gt; { stdout.printf("Focus Out (%s)\n", w.name); focus_count--; manage_focus(w == win_dock); }); } private void manage_focus(bool is_dock){ if(focus_count &gt; 0) { win_dock.show_all(); stdout.printf("Show (focus: %d)\n", focus_count); } else if(is_dock) { win_dock.hide_all(); stdout.printf("Hide (focus: %d, has: %d) dock\n", focus_count, win_dock.is_active ? 1 : 0); } else if(!is_dock) { if(win_dock.is_active) { win_dock.hide_all(); stdout.printf("Hide (focus: %d, has: %d) !dock\n", focus_count, win_dock.is_active ? 1 : 0); } else { stdout.printf("Nop (focus: %d, has: %d) !dock\n", focus_count, win_dock.is_active ? 1 : 0); } } } public static int main (string[] args) { Gtk.init (ref args); Main m = new Main(); m.start(); return 0; } } </code></pre> <p>Thanks.</p>
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