/* -*- Mode: Vala; indent-tabs-mode: nil; tab-width: 4 -*-
*
* Copyright (C) 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 .
*
* Authors: Michael Terry
*/
/* Vala's vapi for gtk3 is broken for lookup_color (it forgets the out keyword) */
[CCode (cheader_filename = "gtk/gtk.h")]
extern bool gtk_style_context_lookup_color (Gtk.StyleContext ctx, string color_name, out Gdk.RGBA color);
public class DashEntry : Gtk.Entry, Fadable
{
public string constant_placeholder_text {get; set;}
protected FadeTracker fade_tracker {get; protected set;}
construct
{
fade_tracker = new FadeTracker (this);
set_icon_activatable (Gtk.EntryIconPosition.SECONDARY, true);
changed.connect (changed_cb);
icon_press.connect (icon_press_cb);
override_font (Pango.FontDescription.from_string ("Ubuntu 14"));
}
public override bool draw (Cairo.Context c)
{
c.save ();
c.push_group ();
base.draw (c);
c.pop_group_to_source ();
c.paint_with_alpha (fade_tracker.alpha);
c.restore ();
/* Now draw the prompt text */
if (get_text_length () == 0 && constant_placeholder_text.length > 0)
draw_prompt_text (c);
return false;
}
private void draw_prompt_text (Cairo.Context c)
{
/* Position text */
int x, y;
get_layout_offsets (out x, out y);
c.move_to (x, y);
/* Set foreground color */
var fg = Gdk.RGBA ();
var context = get_style_context ();
if (!gtk_style_context_lookup_color (context, "placeholder_text_color", out fg))
fg.parse ("#ccc");
c.set_source_rgba (fg.red, fg.green, fg.blue, fg.alpha);
/* Draw text */
var layout = create_pango_layout (constant_placeholder_text);
layout.set_font_description (Pango.FontDescription.from_string ("Ubuntu 16"));
Pango.cairo_show_layout (c, layout);
}
private void changed_cb ()
{
enable_arrow (get_text_length () != 0);
}
private void icon_press_cb ()
{
activate ();
}
private void enable_arrow (bool enabled)
{
if (enabled)
{
var file = File.new_for_path (Path.build_filename (Config.PKGDATADIR, "arrow_right.png", null));
var icon = new FileIcon (file);
set_icon_from_gicon (Gtk.EntryIconPosition.SECONDARY, icon);
}
else
{
set_icon_from_gicon (Gtk.EntryIconPosition.SECONDARY, null);
}
}
}