[SOLVED] WM-hints and moving window?

kalleanka · 09-07-2010, 02:35 PM

Hi,

I have a toplevel window that I want to place depending on another toplevel window. I use gtk_window_move(widget, x, y); At startup this function is called several times and y is changed ones from 412 to 413 and x is always 0(checked with gdb in netbeans). The window gets placed at x=10 and y=400 or so. If I do not use variables but pure ints for x and y it gets placed correctly even if its the same values. I suspect that my window manager notice this change of y and place the widget for me. Is this correct and how do I tell the WM not to do so?

This change of y is due to window size is just a local size and not the correct one as in X. Can i force uppdates from X to the local cache?

Any hints are welcome. Happy programing!

kalleanka · 09-09-2010, 08:20 AM

This is really strange.

Well i solved the part of getting the correct values from the first window. The solution is to catch the signal configure-event from that widget and then use the values.

The problem now is that if i only move the second window it works or if i only resize the second window it works but if i do both i get the wrong position. This with values from the first position.

gtk_window_resize(widget,w,h);
gtk_window_move(widget,x,y);

and the order do not matter.

hmmmmm

kalleanka · 09-18-2010, 05:19 AM

ok i wrote a small program to test it. Now i now its not my code. Its the wm.

The wm (in my case xfwm4) snaps the second window to x = 10 when it should be x=0.

Code:

int main(int argc, char **argv)
{  
    gtk_init(&argc, &argv);

    GtkWidget *win1;
    GtkWidget *win2;
    GdkColor col1;
    GdkColor col2;

    gint x2;


    win1 = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 
    gdk_color_parse("#00f", &col1);
    gtk_widget_modify_bg(win1, GTK_STATE_NORMAL, &col1);

    gtk_window_set_decorated(GTK_WINDOW(win1), FALSE);
    //gtk_window_set_keep_above(GTK_WINDOW(win1), TRUE);
    gtk_window_set_keep_below(GTK_WINDOW(win1),TRUE);
    gtk_window_set_skip_taskbar_hint(GTK_WINDOW(win1), TRUE);
    gtk_window_set_skip_pager_hint(GTK_WINDOW(win1), TRUE);
    
    gtk_window_resize(GTK_WINDOW(win1), 200, 200);
    gtk_window_move(GTK_WINDOW(win1), 5, 100);
    gtk_widget_show_all(win1);



    win2 = gtk_window_new(GTK_WINDOW_TOPLEVEL);

    gdk_color_parse("#f00", &col2);
    gtk_widget_modify_bg(win2, GTK_STATE_NORMAL, &col2);

    gtk_window_set_decorated(GTK_WINDOW(win2), FALSE);
    gtk_window_set_keep_above(GTK_WINDOW(win2), TRUE);
    //gtk_window_set_keep_below(GTK_WINDOW(win2),TRUE);
    gtk_window_set_skip_taskbar_hint(GTK_WINDOW(win2), TRUE);
    gtk_window_set_skip_pager_hint(GTK_WINDOW(win2), TRUE);
    x2 = 100;
    gtk_window_resize(GTK_WINDOW(win2), 5, 200);
    gtk_window_move(GTK_WINDOW(win2), x2, 100);
    gtk_widget_show_all(win2);
    x2 = 0;
    gtk_window_move(GTK_WINDOW(win2), x2, 100);
    gtk_widget_show_all(win2);

    gtk_main();

    return (EXIT_SUCCESS);
}

kalleanka · 09-23-2010, 07:20 AM

ok I solved the problem with an ugly hack. I first destroy the widget with gtk_widget_destroy and the recreat it. The the placement works then. The only thing is that one have to filter signals so this only happens when really needed this handeling otherwise preformance will be bad.

It would be nice to know if this problem is to do with my wm or X.