GTK+ Forums

caracal

Just a quick example on how to use the lgob Clutter/ClutterGtk Bindings
http://oproj.tuxfamily.org/wiki/doku.php?id=lgob

This example is a prototype for a desktop it has been tested and works with
"Metacity, Oroborus" Doesn't work with "xfwm4" <-- Not sure what they did
but the problem is definitely on there end.

Demos "Desktop Background,
Desktop Icons,
Mouse Button 1 2 3,
Up, Down,
Move,
In, Out Events
Icons Popup Menu, and Desktop Popup Menu"
Also demonstrates basic icon effects.

Its missing things like "Click Count, Rubber Band Selection, Drag & Drop, and Event sounds"

The C prototype of this application completely destroys Nautilus Desktop Icons & xfce4-desktop in performance test when using a an nvidia or intel card with hardware accelerated drivers.

I am shooting for kde4 desktop like features.

Code: (C)

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#! /usr/bin/env lua

require("lgob.clutter")
require("lgob.cluttergtk")
require("lgob.gtk")
require("lgob.gdk")

cluttergtk.init_once()

s1, s2, s3, s4, s5 = gdk.Window.get_geometry()
print(string.format("(%d, %d)", s3, s4))

function desktop_motion(data, event)
local x, y = clutter.Event.get_coords(event)
print(string.format("Stage motion event at (%d, %d)", x, y))
return true
end

function desktop_event(data, event)
local x = clutter.ButtonEvent.button(event)
if x == 1 then
print("Mouse Button 1 Desktop Click Event")
elseif x == 2 then
print("Mouse Button 2 Desktop Click Event")
elseif x == 3 then
print("Mouse Button 3 Desktop Click Event")
local menu = gtk.Menu.new()
local i1 = gtk.ImageMenuItem.new_from_stock("Desktop Menu")
menu:add(i1)
menu:show_all()
menu:popup(data)
else
print(x)
end
return true
end

function icon_event_clicked(data, event)
local x = clutter.ButtonEvent.button(event)
local cl = clutter.Event.get_source(event)
if x == 1 then
clutter.Actor.set_scale (cl, 0.90, 0.90);
print("Mouse Button 1 Icon Click Event")
elseif x == 2 then
print("Mouse Button 2 Icon Click Event")
elseif x == 3 then
print("Mouse Button 3 Icon Click Event")
local menu = gtk.Menu.new()
local i1 = gtk.ImageMenuItem.new_from_stock("Icon Menu")
menu:add(i1)
menu:show_all()
menu:popup(data)
else
print(x)
end
return true
end

function icon_event_released(data, event)
local cl = clutter.Event.get_source(event)
clutter.Actor.set_scale (cl, 1.00, 1.00);
print("Icon was released")
return true
end

local win = gtk.Window.new(gtk.WINDOW_TOPLEVEL)
win.set_type_hint(win, 7)
gtk.Window.fullscreen(win)

local vbox = gtk.VBox.new(false, 5)
win:set("title", "Zester Desktop v0.0.1a", "window-position", gtk.WIN_POS_CENTER)
win:connect("delete-event", gtk.main_quit)

local embed = cluttergtk.Embed.new()
embed:set("width-request", s3, "height-request", s4)
vbox:add(embed)
win:add(vbox)

local stage = embed:get_stage()
stage:set_size(s3, s4)
stage:set_color(clutter.color_parse("black"))

-- Add a label actor to the stage
local image = clutter.Texture.new_from_file("wallpaper/background1.jpg")
image:set_size(s3, s4)
image:set_position(0, 0)
stage:add_actor(image)
clutter.Actor.set_reactive(stage, true);
stage:connect("button-press-event", desktop_event)
stage:connect("motion-event", desktop_motion)

group1 = clutter.Group.new()
group1:set_size(48, 48)
group1:set_position(20, 40)
stage:add_actor(group1)
clutter.Actor.set_reactive(group1, true);
group1:connect("button-press-event", icon_event_clicked)
group1:connect("button-release-event", icon_event_released)

-- Add a label actor to the stage
local icon1 = clutter.Texture.new_from_file("icons/user-home.svg")
group1:add_actor(icon1)

-- Add a label actor to the stage
local label1 = clutter.Label.new_full("Sans 8", "Home", clutter.color_parse("white"))
label1:set_position(9.6, 50)
group1:add_actor(label1)

group2 = clutter.Group.new()
group2:set_size(48, 48)
group2:set_position(20, 120)
stage:add_actor(group2)
clutter.Actor.set_reactive(group2, true);
group2:connect("button-press-event", icon_event_clicked)
group2:connect("button-release-event", icon_event_released)

-- Add a label actor to the stage
local icon2 = clutter.Texture.new_from_file("icons/user-trash.svg")
group2:add_actor(icon2)

-- Add a label actor to the stage
local label2 = clutter.Label.new_full("Sans 8", "Trash", clutter.color_parse("white"))
label2:set_position(9.6, 50)
group2:add_actor(label2)

win:show_all()

gtk.main()

You can find the lgob library here.
http://oproj.tuxfamily.org/wiki/doku.php?id=lgob