Performance improvment

[vkravets]

I think that performance and lower memory usage can be improvement. For this need to do such things:

1. Rewrite daemon to C++ =)
2. Use libwnck to register event for changing workspace (in this case we will have dependency for gtk2). Look at the below code as example of usage:
3. Or use x11 libs =)

#! /usr/bin/python
# -*- coding: utf-8 -*-
import wnck
import gtk
import os
import pynotify

def workspace_active_changed(screen, previous):
    workspace = screen.get_active_workspace()
    pynotify.init("Workspace Changed Notify")
    notification = pynotify.Notification("Workspace changed...", workspace.get_name(), "dialog-info")
    notification.set_urgency(pynotify.URGENCY_NORMAL)
    notification.set_timeout(pynotify.EXPIRES_DEFAULT)
    notification.show() 

screen = wnck.screen_get_default()
screen.connect('active-workspace-changed', workspace_active_changed)
gtk.main()

[vajrasky]

Hi Vladimir,

Thank you for rewriting me the C++ version of Wallpapoz daemon.

Performance is nice. Previously Wallpapoz was written in C++. But many people got problem compiling Wallpapoz. So I decided to convert it to python. But maybe I can put C++ side by side. Let me think about it.

Thank you again.

Me.

On Wed, Apr 4, 2012 at 12:07 AM, Vladimir Kravets reply@reply.github.com wrote:

I think that to have good performance and lower memory usage for such behavior need to do such things:

1. Rewrite daemon to C++
2. Use libwnck to register event for changing workspace (in this case we will have dependency for gtk2). Look at the below code as example of usage:

#! /usr/bin/python
# -*- coding: utf-8 -*-
import wnck
import gtk
import os
import pynotify

def workspace_active_changed(screen, previous):
       workspace = screen.get_active_workspace()
       pynotify.init("Workspace Changed Notify")
       notification = pynotify.Notification("Workspace changed...", workspace.get_name(), "dialog-info")
       notification.set_urgency(pynotify.URGENCY_NORMAL)
       notification.set_timeout(pynotify.EXPIRES_DEFAULT)
       notification.show()

screen = wnck.screen_get_default()
screen.connect('active-workspace-changed', workspace_active_changed)
gtk.main()

---

Reply to this email directly or view it on GitHub: https://github.com/vajrasky/wallpapoz/issues/4

[vkravets]

I'm just trying to rewrite above python script to vala and I have such result:

using Wnck;
using Gtk;
using Notify;

namespace org.test {

    class WorkspaceChanger : GLib.Object {

        private Wnck.Screen screen;

        public void register() {
            screen = Wnck.Screen.get_default();
                        //show_notify("change workspace", @"Screen info: $(screen.get_workspace_count())");
            screen.active_workspace_changed.connect(workspaceChanged);
        }

        public void workspaceChanged(Wnck.Workspace? prev_workspace) {
            var workspace = screen.get_active_workspace();
                        show_notify("change workspace", @"Number $(workspace.get_name())");
        }

        public void show_notify(string sum, string body) {
            var note = new Notify.Notification(sum, body, null);
            note.set_timeout(3000);
            note.set_urgency(Notify.Urgency.NORMAL);
            try {
                note.show();
            } catch (GLib.Error err) {
            }
        }

        public static int main(string[] args) {
            Gdk.threads_init();
            Gtk.init(ref args);

            var test = new WorkspaceChanger();
            test.register();

                    // Enter the Glib eventloop
            // Everything from this point on is completely signal based
            Gdk.threads_enter();
            Gtk.main();
            Gdk.threads_leave();        

            return 0;
        }

    }
}

Mem: Python ~30Mb, Vala: ~7Mb Speed is much grated since vala compiler translate code to c.

Please try =)