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/* -*- Mode: Vala; indent-tabs-mode: nil; tab-width: 4 -*-
*
* Copyright (C) 2011,2012 Canonical Ltd
* Copyright (C) 2015-2017 Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
* Copyright (C) 2023 Robert Tari
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Authors: Robert Ancell <robert.ancell@canonical.com>
* Michael Terry <michael.terry@canonical.com>
* Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
* Robert Tari <robert@tari.in>
*/
public class MainWindow : Gtk.Window
{
public MenuBar menubar;
private List<Monitor> monitors;
private Monitor? primary_monitor;
private Monitor active_monitor;
private string only_on_monitor;
private bool monitor_setting_ok;
private Background background;
private Gtk.Box login_box;
private Gtk.Box hbox;
private Gtk.Box content_box;
private Gtk.Button back_button;
private ShutdownDialog? shutdown_dialog = null;
private bool do_resize;
public ListStack stack;
public enum Struts {
LEFT,
RIGHT,
TOP,
BOTTOM,
LEFT_START,
LEFT_END,
RIGHT_START,
RIGHT_END,
TOP_START,
TOP_END,
BOTTOM_START,
BOTTOM_END
}
public enum MenubarPositions {
LEFT,
RIGHT,
TOP,
BOTTOM,
}
construct
{
events |= Gdk.EventMask.POINTER_MOTION_MASK;
var accel_group = new Gtk.AccelGroup ();
add_accel_group (accel_group);
var bg_color = Gdk.RGBA ();
bg_color.parse (AGSettings.get_string (AGSettings.KEY_BACKGROUND_COLOR));
override_background_color (Gtk.StateFlags.NORMAL, bg_color);
get_accessible ().set_name (_("Login Screen"));
ArcticaGreeter.add_style_class (this);
background = new Background ();
add (background);
ArcticaGreeter.add_style_class (background);
login_box = new Gtk.Box (Gtk.Orientation.VERTICAL, 0);
login_box.show ();
background.add (login_box);
/* Box for menubar shadow */
var menubox = new Gtk.EventBox ();
var shadow_path = Path.build_filename (Config.PKGDATADIR,
"shadow.png", null);
var shadow_style = "";
if (FileUtils.test (shadow_path, FileTest.EXISTS))
{
shadow_style = "background-image: url('%s');
background-repeat: repeat;".printf(shadow_path);
}
menubox.set_size_request (-1, ArcticaGreeter.MENUBAR_HEIGHT);
menubox.show ();
login_box.add (menubox);
ArcticaGreeter.add_style_class (menubox);
menubar = new MenuBar (background, accel_group);
menubar.set_hexpand (true);
menubar.set_vexpand (false);
menubar.set_halign (Gtk.Align.FILL);
menubar.set_valign (Gtk.Align.START);
menubar.show ();
menubox.add (menubar);
ArcticaGreeter.add_style_class (menubar);
ArcticaGreeter.add_style_class (menubox);
content_box = new Gtk.Box (Gtk.Orientation.HORIZONTAL, 0);
content_box.expand = true;
content_box.show ();
login_box.add (content_box);
var content_align = AGSettings.get_string(AGSettings.KEY_CONTENT_ALIGN);
var x_align = 0.5f;
if (content_align == "left")
{
x_align = 0.0f;
}
else if (content_align == "right")
{
x_align = 1.0f;
}
var align = new Gtk.Alignment (x_align, 0.0f, 0.0f, 1.0f);
if (content_align == "center")
{
// offset for back button
align.margin_right = grid_size;
}
align.show ();
content_box.add (align);
hbox = new Gtk.Box (Gtk.Orientation.HORIZONTAL, 0);
hbox.expand = true;
hbox.show ();
align.add (hbox);
align = new Gtk.Alignment (0.5f, 0.5f, 0.0f, 0.0f);
// Hack to avoid gtk 3.20's new allocate logic, which messes us up.
align.resize_mode = Gtk.ResizeMode.QUEUE;
align.set_size_request (grid_size, -1);
align.margin_bottom = ArcticaGreeter.MENUBAR_HEIGHT; /* offset for menubar at top */
align.show ();
hbox.add (align);
back_button = new FlatButton ();
back_button.get_accessible ().set_name (_("Back"));
Gtk.button_set_focus_on_click (back_button, false);
var image = new Gtk.Image.from_file (Path.build_filename (Config.PKGDATADIR, "arrow_left.png", null));
image.show ();
back_button.set_size_request (grid_size - GreeterList.BORDER * 2, grid_size - GreeterList.BORDER * 2);
try
{
var style = new Gtk.CssProvider ();
style.load_from_data ("* {background-color: transparent;
%s
}".printf(shadow_style), -1);
var context = back_button.get_style_context();
context.add_provider (style,
Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION);
}
catch (Error e)
{
debug ("Internal error loading back button style: %s", e.message);
}
back_button.add (image);
back_button.clicked.connect (pop_list);
align.add (back_button);
stack = new ListStack ();
stack.show ();
stack.set_hexpand (false);
stack.set_vexpand (true);
stack.set_halign (Gtk.Align.CENTER);
stack.set_valign (Gtk.Align.FILL);
hbox.add (stack);
add_user_list ();
primary_monitor = null;
do_resize = false;
only_on_monitor = AGSettings.get_string(AGSettings.KEY_ONLY_ON_MONITOR);
monitor_setting_ok = only_on_monitor == "auto";
var greeter = new ArcticaGreeter ();
if (greeter.test_mode)
{
/* Simulate an 800x600 monitor to the left of a 640x480 monitor */
monitors = new List<Monitor> ();
monitors.append (new Monitor (0, 0, 800, 600));
monitors.append (new Monitor (800, 120, 640, 480));
background.set_monitors (monitors);
move_to_monitor (monitors.nth_data (0));
resize (background.width, background.height);
}
else
{
var screen = get_screen ();
screen.monitors_changed.connect (monitors_changed_cb);
monitors_changed_cb (screen);
}
}
public void push_list (GreeterList widget)
{
stack.push (widget);
if (stack.num_children > 1)
back_button.show ();
}
public void pop_list ()
{
if (stack.num_children <= 2)
back_button.hide ();
stack.pop ();
}
public override void size_allocate (Gtk.Allocation allocation)
{
base.size_allocate (allocation);
if (content_box != null)
{
var content_align = AGSettings.get_string(AGSettings.KEY_CONTENT_ALIGN);
content_box.margin_left = get_grid_offset (get_allocated_width ()) + (content_align == "left" ? grid_size : 0);
content_box.margin_right = get_grid_offset (get_allocated_width ()) + (content_align == "right" ? grid_size : 0);
content_box.margin_top = get_grid_offset (get_allocated_height ());
content_box.margin_bottom = get_grid_offset (get_allocated_height ());
}
}
/* Setup the size and position of the window */
public void setup_window ()
{
resize (background.width, background.height);
move (0, 0);
move_to_monitor (primary_monitor);
set_struts (this, MenubarPositions.TOP, ArcticaGreeter.MENUBAR_HEIGHT);
}
public void set_struts(Gtk.Window? window, uint position, long menubar_size)
{
if (!window.get_realized()) {
return;
}
var screen = window.screen;
int scale = window.get_scale_factor();
if (primary_monitor == null) {
return;
}
Gdk.Atom atom;
long struts[12] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
// Struts dependent on position
switch (position) {
case MenubarPositions.TOP:
struts[Struts.TOP] = (menubar_size + primary_monitor.y) * scale;
struts[Struts.TOP_START] = primary_monitor.x * scale;
struts[Struts.TOP_END] = (primary_monitor.x + primary_monitor.width) * scale - 1;
break;
case MenubarPositions.LEFT:
struts[Struts.LEFT] = (primary_monitor.x + menubar_size) * scale;
struts[Struts.LEFT_START] = primary_monitor.y * scale;
struts[Struts.LEFT_END] = (primary_monitor.y + primary_monitor.height) * scale - 1;
break;
case MenubarPositions.RIGHT:
struts[Struts.RIGHT] = (menubar_size + screen.get_width() - primary_monitor.x - primary_monitor.width) * scale;
struts[Struts.RIGHT_START] = primary_monitor.y * scale;
struts[Struts.RIGHT_END] = (primary_monitor.y + primary_monitor.height) * scale - 1;
break;
case MenubarPositions.BOTTOM:
default:
struts[Struts.BOTTOM] = (menubar_size + screen.get_height() - primary_monitor.y - primary_monitor.height) * scale;
struts[Struts.BOTTOM_START] = primary_monitor.x * scale;
struts[Struts.BOTTOM_END] = (primary_monitor.x + primary_monitor.width) * scale - 1;
break;
}
atom = Gdk.Atom.intern("_NET_WM_STRUT", false);
Gdk.property_change(window.get_window(), atom, Gdk.Atom.intern("CARDINAL", false),
32, Gdk.PropMode.REPLACE, (uint8[])struts, 4);
atom = Gdk.Atom.intern("_NET_WM_STRUT_PARTIAL", false);
Gdk.property_change(window.get_window(), atom, Gdk.Atom.intern("CARDINAL", false),
32, Gdk.PropMode.REPLACE, (uint8[])struts, 12);
}
public override void realize ()
{
base.realize ();
Gdk.DrawingContext background_context;
background_context = get_window().begin_draw_frame(get_window().get_visible_region());
background.set_surface (background_context.get_cairo_context().get_target());
get_window().end_draw_frame(background_context);
}
private void monitors_changed_cb (Gdk.Screen screen)
{
Gdk.Display display;
display = screen.get_display();
Gdk.Rectangle geometry;
Gdk.Monitor primary = display.get_primary_monitor();
geometry = primary.get_geometry();
monitors = new List<Monitor> ();
primary_monitor = null;
for (var i = 0; i < display.get_n_monitors (); i++)
{
Gdk.Monitor monitor = display.get_monitor(i);
geometry = monitor.get_geometry ();
debug ("Monitor %d is %dx%d pixels at %d,%d", i, geometry.width, geometry.height, geometry.x, geometry.y);
if (monitor_is_unique_position (display, i))
{
var greeter_monitor = new Monitor (geometry.x, geometry.y, geometry.width, geometry.height);
var plug_name = monitor.get_model();
monitors.append (greeter_monitor);
if (plug_name == only_on_monitor)
monitor_setting_ok = true;
if (plug_name == only_on_monitor || primary_monitor == null || primary == monitor)
primary_monitor = greeter_monitor;
}
}
debug ("MainWindow is %dx%d pixels", background.width, background.height);
background.set_monitors (monitors);
set_struts (this, MenubarPositions.TOP, ArcticaGreeter.MENUBAR_HEIGHT);
if(do_resize)
{
setup_window ();
}
else
{
do_resize = true;
}
}
/* Check if a monitor has a unique position */
private bool monitor_is_unique_position (Gdk.Display display, int n)
{
Gdk.Rectangle g0;
Gdk.Monitor mon0;
mon0 = display.get_monitor(n);
g0 = mon0.get_geometry ();
for (var i = n + 1; i < display.get_n_monitors (); i++)
{
Gdk.Rectangle g1;
Gdk.Monitor mon1;
mon1 = display.get_monitor(i);
g1 = mon1.get_geometry();
if (g0.x == g1.x && g0.y == g1.y)
return false;
}
return true;
}
public override bool motion_notify_event (Gdk.EventMotion event)
{
if (!monitor_setting_ok || only_on_monitor == "auto")
{
var x = (int) (event.x + 0.5);
var y = (int) (event.y + 0.5);
/* Get motion event relative to this widget */
if (event.window != get_window ())
{
int w_x, w_y;
get_window ().get_origin (out w_x, out w_y);
x -= w_x;
y -= w_y;
event.window.get_origin (out w_x, out w_y);
x += w_x;
y += w_y;
}
foreach (var m in monitors)
{
if (x >= m.x && x <= m.x + m.width && y >= m.y && y <= m.y + m.height)
{
move_to_monitor (m);
break;
}
}
}
return false;
}
private void move_to_monitor (Monitor monitor)
{
active_monitor = monitor;
login_box.set_size_request (monitor.width, monitor.height);
background.set_active_monitor (monitor);
background.move (login_box, monitor.x, monitor.y);
if (shutdown_dialog != null)
{
shutdown_dialog.set_active_monitor (monitor);
background.move (shutdown_dialog, monitor.x, monitor.y);
}
}
private void add_user_list ()
{
GreeterList greeter_list;
greeter_list = new UserList (background, menubar);
greeter_list.show ();
ArcticaGreeter.add_style_class (greeter_list);
push_list (greeter_list);
}
public override bool key_press_event (Gdk.EventKey event)
{
var top = stack.top ();
if (stack.top () is UserList)
{
var user_list = stack.top () as UserList;
var shift_mask = Gdk.ModifierType.CONTROL_MASK | Gdk.ModifierType.MOD1_MASK;
var control_mask = Gdk.ModifierType.SHIFT_MASK | Gdk.ModifierType.MOD1_MASK;
var alt_mask = Gdk.ModifierType.CONTROL_MASK | Gdk.ModifierType.SHIFT_MASK;
if (((event.keyval == Gdk.Key.Shift_L || event.keyval == Gdk.Key.Shift_R) && (event.state & shift_mask) == shift_mask) ||
((event.keyval == Gdk.Key.Control_L || event.keyval == Gdk.Key.Control_R) && (event.state & control_mask) == control_mask) ||
((event.keyval == Gdk.Key.Alt_L || event.keyval == Gdk.Key.Alt_R) && (event.state & alt_mask) == alt_mask))
{
debug ("Hidden user key combination detected");
user_list.show_hidden_users = ! user_list.show_hidden_users;
return true;
}
}
else if (stack.top () is SessionList) {
// Session list is open
switch (event.keyval) {
case Gdk.Key.Escape:
case Gdk.Key.Left:
case Gdk.Key.KP_Left:
pop_list();
return true;
}
}
var greeter = new ArcticaGreeter ();
switch (event.keyval)
{
case Gdk.Key.Escape:
if (login_box.sensitive)
top.cancel_authentication ();
if (shutdown_dialog != null)
shutdown_dialog.cancel ();
return true;
case Gdk.Key.Page_Up:
case Gdk.Key.KP_Page_Up:
if (login_box.sensitive)
top.scroll (GreeterList.ScrollTarget.START);
return true;
case Gdk.Key.Page_Down:
case Gdk.Key.KP_Page_Down:
if (login_box.sensitive)
top.scroll (GreeterList.ScrollTarget.END);
return true;
case Gdk.Key.Up:
case Gdk.Key.KP_Up:
if (login_box.sensitive)
top.scroll (GreeterList.ScrollTarget.UP);
return true;
case Gdk.Key.Down:
case Gdk.Key.KP_Down:
if (login_box.sensitive)
top.scroll (GreeterList.ScrollTarget.DOWN);
return true;
case Gdk.Key.F10:
if (login_box.sensitive)
menubar.select_first (false);
return true;
case Gdk.Key.PowerOff:
show_shutdown_dialog (ShutdownDialogType.SHUTDOWN);
return true;
case Gdk.Key.Print:
debug ("Taking screenshot");
var root = Gdk.get_default_root_window ();
var screenshot = Gdk.pixbuf_get_from_window (root, 0, 0, root.get_width (), root.get_height ());
try
{
screenshot.save ("Screenshot.png", "png", null);
}
catch (Error e)
{
warning ("Failed to save screenshot: %s", e.message);
}
return true;
case Gdk.Key.z:
if (greeter.test_mode && (event.state & Gdk.ModifierType.MOD1_MASK) != 0)
{
show_shutdown_dialog (ShutdownDialogType.SHUTDOWN);
return true;
}
break;
case Gdk.Key.Z:
if (greeter.test_mode && (event.state & Gdk.ModifierType.MOD1_MASK) != 0)
{
show_shutdown_dialog (ShutdownDialogType.RESTART);
return true;
}
break;
}
return base.key_press_event (event);
}
public void show_shutdown_dialog (ShutdownDialogType type)
{
if (shutdown_dialog != null)
shutdown_dialog.destroy ();
/* Stop input to login box */
login_box.sensitive = false;
shutdown_dialog = new ShutdownDialog (type, background);
shutdown_dialog.closed.connect (close_shutdown_dialog);
background.add (shutdown_dialog);
move_to_monitor (active_monitor);
shutdown_dialog.visible = true;
}
public void close_shutdown_dialog ()
{
if (shutdown_dialog == null)
return;
shutdown_dialog.destroy ();
shutdown_dialog = null;
login_box.sensitive = true;
}
}
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