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|
/* -*- Mode: Vala; indent-tabs-mode: nil; tab-width: 4 -*-
*
* Copyright (C) 2011,2012 Canonical Ltd
*
* 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>
*/
public class PromptBox : FadableBox
{
public signal void respond (string[] response);
public signal void login ();
public signal void show_options ();
public signal void name_clicked ();
public static string font = AGSettings.get_string (AGSettings.KEY_FONT_NAME);
public static string font_family = font.split_set(" ")[0];
public static int font_size = int.parse(font.split_set(" ")[1]);
public bool has_errors { get; set; default = false; }
public string id { get; construct; }
public string label
{
get { return name_label.label; }
set
{
name_label.label = value;
small_name_label.label = value;
}
}
public double position { get; set; default = 0; }
private Gtk.Fixed fixed;
private Gtk.Widget zone; /* when overlapping zone we are fully expanded */
/* Expanded widgets */
protected Gtk.Grid box_grid;
protected Gtk.Grid name_grid;
private ActiveIndicator active_indicator;
protected FadingLabel name_label;
protected FlatButton option_button;
private CachedImage option_image;
private CachedImage message_image;
/* Condensed widgets */
protected Gtk.Widget small_box_widget;
private ActiveIndicator small_active_indicator;
protected FadingLabel small_name_label;
private CachedImage small_message_image;
protected const int COL_ACTIVE = 0;
protected const int COL_CONTENT = 1;
protected const int COL_SPACER = 2;
protected const int ROW_NAME = 0;
protected const int COL_NAME_LABEL = 0;
protected const int COL_NAME_MESSAGE = 1;
protected const int COL_NAME_OPTIONS = 2;
protected const int COL_ENTRIES_START = 1;
protected const int COL_ENTRIES_END = 1;
protected const int COL_ENTRIES_WIDTH = 1;
protected int start_row;
protected int last_row;
private enum PromptVisibility
{
HIDDEN,
FADING,
SHOWN,
}
private PromptVisibility prompt_visibility = PromptVisibility.HIDDEN;
public PromptBox (string id)
{
Object (id: id);
}
construct
{
set_start_row ();
reset_last_row ();
expand = true;
fixed = new Gtk.Fixed ();
fixed.show ();
add (fixed);
box_grid = new Gtk.Grid ();
box_grid.column_spacing = 4;
box_grid.row_spacing = 3;
box_grid.margin_top = GreeterList.BORDER;
box_grid.margin_bottom = 6;
box_grid.expand = true;
/** Grid layout:
0 1 2 3 4
> Name M S <
Message.......
Entry.........
*/
if (font_size < 6)
font_size = 6;
active_indicator = new ActiveIndicator ();
active_indicator.valign = Gtk.Align.START;
active_indicator.margin_top = (grid_size - ActiveIndicator.HEIGHT) / 2;
active_indicator.show ();
box_grid.attach (active_indicator, COL_ACTIVE, last_row, 1, 1);
/* Add a second one on right just for equal-spacing purposes */
var dummy_indicator = new ActiveIndicator ();
dummy_indicator.show ();
box_grid.attach (dummy_indicator, COL_SPACER, last_row, 1, 1);
box_grid.show ();
/* Create fully expanded version of ourselves */
name_grid = create_name_grid ();
box_grid.attach (name_grid, COL_CONTENT, last_row, 1, 1);
/* Now prep small versions of the above normal widgets. These are
* used when scrolling outside of the main dash box. */
var small_box_grid = new Gtk.Grid ();
small_box_grid.column_spacing = 4;
small_box_grid.row_spacing = 6;
small_box_grid.hexpand = true;
small_box_grid.show ();
small_active_indicator = new ActiveIndicator ();
small_active_indicator.valign = Gtk.Align.START;
small_active_indicator.margin_top = (grid_size - ActiveIndicator.HEIGHT) / 2;
small_active_indicator.show ();
small_box_grid.attach (small_active_indicator, 0, 0, 1, 1);
var small_name_grid = create_small_name_grid ();
small_box_grid.attach (small_name_grid, 1, 0, 1, 1);
/* Add a second indicator on right just for equal-spacing purposes */
var small_dummy_indicator = new ActiveIndicator ();
small_dummy_indicator.show ();
small_box_grid.attach (small_dummy_indicator, 3, 0, 1, 1);
var small_box_eventbox = new Gtk.EventBox ();
small_box_eventbox.visible_window = false;
small_box_eventbox.button_release_event.connect (() =>
{
name_clicked ();
return true;
});
small_box_eventbox.add (small_box_grid);
small_box_eventbox.show ();
small_box_widget = small_box_eventbox;
fixed.add (small_box_widget);
fixed.add (box_grid);
}
protected virtual Gtk.Grid create_name_grid ()
{
var name_grid = new Gtk.Grid ();
name_grid.column_spacing = 4;
name_grid.hexpand = true;
name_label = new FadingLabel ("");
var style_ctx = name_label.get_style_context();
try
{
var font_provider = new Gtk.CssProvider ();
var css = "* {font-family: %s; font-size: %dpt;}".printf (font_family, font_size+2);
font_provider.load_from_data (css, -1);
style_ctx.add_provider (font_provider,
Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION);
}
catch (Error e)
{
debug ("Internal error loading font style (%s, %dpt): %s", font_family, font_size+2, e.message);
}
name_label.override_color (Gtk.StateFlags.NORMAL, { 1.0f, 1.0f, 1.0f, 1.0f });
name_label.valign = Gtk.Align.START;
name_label.vexpand = true;
name_label.yalign = 0.5f;
name_label.xalign = 0.0f;
name_label.margin_left = 2;
name_label.set_size_request (-1, grid_size);
name_label.show ();
name_grid.attach (name_label, COL_NAME_LABEL, ROW_NAME, 1, 1);
message_image = new CachedImage (null);
try
{
message_image.pixbuf = new Gdk.Pixbuf.from_file (Path.build_filename (Config.PKGDATADIR, "message.png", null));
}
catch (Error e)
{
debug ("Error loading message image: %s", e.message);
}
var align = new Gtk.Alignment (0.5f, 0.5f, 0.0f, 0.0f);
align.valign = Gtk.Align.START;
align.set_size_request (-1, grid_size);
align.add (message_image);
align.show ();
name_grid.attach (align, COL_NAME_MESSAGE, ROW_NAME, 1, 1);
option_button = new FlatButton ();
option_button.get_style_context ().add_class ("option-button");
option_button.hexpand = true;
option_button.halign = Gtk.Align.END;
option_button.valign = Gtk.Align.START;
// Keep as much space on top as on the right
option_button.margin_top = ActiveIndicator.WIDTH + box_grid.column_spacing;
Gtk.button_set_focus_on_click (option_button, false);
option_button.relief = Gtk.ReliefStyle.NONE;
option_button.get_accessible ().set_name (_("Session Options"));
option_button.clicked.connect (option_button_clicked_cb);
option_image = new CachedImage (null);
option_image.show ();
option_button.add (option_image);
name_grid.attach (option_button, COL_NAME_OPTIONS, ROW_NAME, 1, 1);
name_grid.show ();
return name_grid;
}
protected virtual Gtk.Grid create_small_name_grid ()
{
var small_name_grid = new Gtk.Grid ();
small_name_grid.column_spacing = 4;
small_name_label = new FadingLabel ("");
var style_ctx = small_name_label.get_style_context();
try
{
var font_provider = new Gtk.CssProvider ();
var css = "* {font-family: %s; font-size: %dpt;}".printf (font_family, font_size);
font_provider.load_from_data (css, -1);
style_ctx.add_provider (font_provider,
Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION);
}
catch (Error e)
{
debug ("Internal error loading font style (%s, %dpt): %s", font_family, font_size, e.message);
}
small_name_label.override_color (Gtk.StateFlags.NORMAL, { 1.0f, 1.0f, 1.0f, 1.0f });
small_name_label.yalign = 0.5f;
small_name_label.xalign = 0.0f;
small_name_label.margin_left = 2;
small_name_label.set_size_request (-1, grid_size);
small_name_label.show ();
small_name_grid.attach (small_name_label, 1, 0, 1, 1);
small_message_image = new CachedImage (null);
small_message_image.pixbuf = message_image.pixbuf;
var align = new Gtk.Alignment (0.5f, 0.5f, 0.0f, 0.0f);
align.set_size_request (-1, grid_size);
align.add (small_message_image);
align.show ();
small_name_grid.attach (align, 2, 0, 1, 1);
small_name_grid.show ();
return small_name_grid;
}
protected virtual void set_start_row ()
{
start_row = 0;
}
protected virtual void reset_last_row ()
{
last_row = start_row;
}
#if HAVE_GTK_3_20_0
private int round_to_grid (int size)
{
var num_grids = size / grid_size;
var remainder = size % grid_size;
if (remainder > 0)
num_grids += 1;
num_grids = int.max (num_grids, 3);
return num_grids * grid_size;
}
public override void get_preferred_height (out int min, out int nat)
{
base.get_preferred_height (out min, out nat);
min = round_to_grid (min + GreeterList.BORDER * 2) - GreeterList.BORDER * 2;
nat = round_to_grid (nat + GreeterList.BORDER * 2) - GreeterList.BORDER * 2;
if (position <= -1 || position >= 1)
min = nat = grid_size;
}
#endif
public void set_zone (Gtk.Widget zone)
{
this.zone = zone;
queue_draw ();
}
public void set_options_image (Gdk.Pixbuf? image)
{
if (option_button == null)
return;
option_image.pixbuf = image;
if (image == null)
option_button.hide ();
else
option_button.show ();
}
private void option_button_clicked_cb (Gtk.Button button)
{
show_options ();
}
public void set_show_message_icon (bool show)
{
message_image.visible = show;
small_message_image.visible = show;
}
public void set_is_active (bool active)
{
active_indicator.active = active;
small_active_indicator.active = active;
}
protected void foreach_prompt_widget (Gtk.Callback cb)
{
var prompt_widgets = new List<Gtk.Widget> ();
var i = start_row + 1;
while (i <= last_row)
{
var c = box_grid.get_child_at (COL_ENTRIES_START, i);
if (c != null) /* c might have been deleted from selective clear */
prompt_widgets.append (c);
i++;
}
foreach (var w in prompt_widgets)
cb (w);
}
public void clear ()
{
prompt_visibility = PromptVisibility.HIDDEN;
foreach_prompt_widget ((w) => { w.destroy (); });
reset_last_row ();
has_errors = false;
}
/* Clears error messages */
public void reset_messages ()
{
has_errors = false;
foreach_prompt_widget ((w) =>
{
var is_error = w.get_data<bool> ("prompt-box-is-error");
if (is_error)
w.destroy ();
});
}
/* Stops spinners */
public void reset_spinners ()
{
foreach_prompt_widget ((w) =>
{
if (w is DashEntry)
{
var e = w as DashEntry;
e.did_respond = false;
}
});
}
/* Clears error messages and stops spinners. Basically gets the box back to a filled-by-user-but-no-status state. */
public void reset_state ()
{
reset_messages ();
reset_spinners ();
}
public virtual void add_static_prompts ()
{
/* Subclasses may want to add prompts that are always present here */
}
private void update_prompt_visibility (Gtk.Widget w)
{
switch (prompt_visibility)
{
case PromptVisibility.HIDDEN:
w.hide ();
break;
case PromptVisibility.FADING:
var f = w as Fadable;
w.sensitive = true;
if (f != null)
f.fade_in ();
else
w.show ();
break;
case PromptVisibility.SHOWN:
w.show ();
w.sensitive = true;
break;
}
}
public void fade_in_prompts ()
{
prompt_visibility = PromptVisibility.FADING;
show ();
foreach_prompt_widget ((w) => { update_prompt_visibility (w); });
}
public void show_prompts ()
{
prompt_visibility = PromptVisibility.SHOWN;
show ();
foreach_prompt_widget ((w) => { update_prompt_visibility (w); });
}
protected void attach_item (Gtk.Widget w, bool add_style_class = true)
{
w.set_data ("prompt-box-widget", this);
if (add_style_class)
ArcticaGreeter.add_style_class (w);
last_row += 1;
box_grid.attach (w, COL_ENTRIES_START, last_row, COL_ENTRIES_WIDTH, 1);
update_prompt_visibility (w);
queue_resize ();
}
public void add_message (string text, bool is_error)
{
var label = new FadingLabel (text);
var style_ctx = label.get_style_context();
try
{
var font_provider = new Gtk.CssProvider ();
var css = "* {font-family: %s; font-size: %dpt;}".printf (font_family, font_size-1);
font_provider.load_from_data (css, -1);
style_ctx.add_provider (font_provider,
Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION);
}
catch (Error e)
{
debug ("Internal error loading font style (%s, %dpt): %s", font_family, font_size-1, e.message);
}
Gdk.RGBA color = { 1.0f, 1.0f, 1.0f, 1.0f };
if (is_error)
color.parse ("#df382c");
label.override_color (Gtk.StateFlags.NORMAL, color);
label.xalign = 0.0f;
label.set_data<bool> ("prompt-box-is-error", is_error);
attach_item (label);
if (is_error)
has_errors = true;
}
public DashEntry add_prompt (string text, string? accessible_text, bool is_secret)
{
/* Stop other entry's arrows/spinners from showing */
foreach_prompt_widget ((w) =>
{
if (w is DashEntry)
{
var e = w as DashEntry;
if (e != null)
e.can_respond = false;
}
});
var entry = new DashEntry ();
entry.sensitive = false;
if (text.contains ("\n"))
{
add_message (text, false);
entry.constant_placeholder_text = "";
}
else
{
/* Strip trailing colon if present (also handle CJK version) */
var placeholder = text;
if (placeholder.has_suffix (":") || placeholder.has_suffix (":"))
{
var len = placeholder.char_count ();
placeholder = placeholder.substring (0, placeholder.index_of_nth_char (len - 1));
}
entry.constant_placeholder_text = placeholder;
}
var accessible = entry.get_accessible ();
if (accessible_text != null)
accessible.set_name (accessible_text);
else
accessible.set_name (text);
if (is_secret)
{
entry.visibility = false;
entry.caps_lock_warning = true;
}
entry.respond.connect (entry_activate_cb);
attach_item (entry);
return entry;
}
public Gtk.ComboBox add_combo (GenericArray<string> texts, bool read_only)
{
Gtk.ComboBoxText combo;
if (read_only)
combo = new Gtk.ComboBoxText ();
else
combo = new Gtk.ComboBoxText.with_entry ();
combo.get_style_context ().add_class ("lightdm-combo");
combo.get_child ().get_style_context ().add_class ("lightdm-combo");
var style_ctx = combo.get_child ().get_style_context();
try
{
var font_provider = new Gtk.CssProvider ();
var css = "* {font-family: %s; font-size: %dpt;}".printf (DashEntry.font_family, DashEntry.font_size);
font_provider.load_from_data (css, -1);
style_ctx.add_provider (font_provider,
Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION);
}
catch (Error e)
{
debug ("Internal error loading font style (%s, %dpt): %s", font_family, font_size+2, e.message);
}
attach_item (combo, false);
texts.foreach ((text) => { combo.append_text (text); });
if (texts.length > 0)
combo.active = 0;
return combo;
}
protected void entry_activate_cb ()
{
var response = new string[0];
foreach_prompt_widget ((w) =>
{
if (w is Gtk.Entry)
{
var e = w as Gtk.Entry;
if (e != null)
response += e.text;
}
});
respond (response);
}
public void add_button (string text, string? accessible_text)
{
var button = new DashButton (text);
var accessible = button.get_accessible ();
accessible.set_name (accessible_text);
button.clicked.connect (button_clicked_cb);
attach_item (button);
}
private void button_clicked_cb (Gtk.Button button)
{
login ();
}
public override void grab_focus ()
{
var done = false;
Gtk.Widget best = null;
foreach_prompt_widget ((w) =>
{
if (done)
return;
best = w; /* last entry wins, all else considered */
var e = w as Gtk.Entry;
var b = w as Gtk.Button;
var c = w as Gtk.ComboBox;
/* We've found ideal entry (first empty one), so stop looking */
if ((e != null && e.text == "") || b != null || c != null)
done = true;
});
if (best != null)
best.grab_focus ();
}
public override void size_allocate (Gtk.Allocation allocation)
{
base.size_allocate (allocation);
box_grid.size_allocate (allocation);
int small_height;
small_box_widget.get_preferred_height (null, out small_height);
allocation.height = small_height;
small_box_widget.size_allocate (allocation);
}
public override void draw_full_alpha (Cairo.Context c)
{
/* Draw either small or normal version of ourselves, depending on where
our allocation put us relative to our zone */
int x, y;
zone.translate_coordinates (this, 0, 0, out x, out y);
Gtk.Allocation alloc, zone_alloc;
this.get_allocation (out alloc);
zone.get_allocation (out zone_alloc);
/* Draw main grid only in that area */
c.save ();
c.rectangle (x, y, zone_alloc.width, zone_alloc.height);
c.clip ();
fixed.propagate_draw (box_grid, c);
c.restore ();
/* Do actual drawing */
c.save ();
if (y > 0)
c.rectangle (x, 0, zone_alloc.width, y);
else
c.rectangle (x, y + zone_alloc.height, zone_alloc.width, -y);
c.clip ();
fixed.propagate_draw (small_box_widget, c);
c.restore ();
}
}
private class ActiveIndicator : Gtk.Image
{
public bool active { get; set; }
public const int WIDTH = 8;
public const int HEIGHT = 7;
construct
{
var filename = Path.build_filename (Config.PKGDATADIR, "active.png");
try
{
pixbuf = new Gdk.Pixbuf.from_file (filename);
}
catch (Error e)
{
debug ("Could not load active image: %s", e.message);
}
notify["active"].connect (() => { queue_draw (); });
xalign = 0.0f;
}
public override void get_preferred_width (out int min, out int nat)
{
min = WIDTH;
nat = min;
}
public override void get_preferred_height (out int min, out int nat)
{
min = HEIGHT;
nat = min;
}
public override bool draw (Cairo.Context c)
{
if (!active)
return false;
return base.draw (c);
}
}
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