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/* Copyright 2016 Software Freedom Conservancy Inc.
*
* This software is licensed under the GNU Lesser General Public License
* (version 2.1 or later). See the COPYING file in this distribution.
*/
internal class BackgroundProgressBar : Gtk.ProgressBar {
public enum Priority {
NONE = 0,
STARTUP_SCAN = 35,
REALTIME_UPDATE = 40,
REALTIME_IMPORT = 50,
METADATA_WRITER = 30
}
public bool should_be_visible { get; private set; default = false; }
#if UNITY_SUPPORT
// UnityProgressBar: init
private UnityProgressBar uniprobar = UnityProgressBar.get_instance();
#endif
private const int PULSE_MSEC = 250;
public BackgroundProgressBar() {
Object(show_text: true);
}
private Priority current_priority = Priority.NONE;
private uint pulse_id = 0;
public void start(string label, Priority priority) {
if (priority < current_priority)
return;
stop(priority, false);
current_priority = priority;
set_text(label);
pulse();
should_be_visible = true;
pulse_id = Timeout.add(PULSE_MSEC, on_pulse_timeout);
}
public void stop(Priority priority, bool clear) {
if (priority < current_priority)
return;
if (pulse_id != 0) {
Source.remove(pulse_id);
pulse_id = 0;
}
if (clear)
this.clear(priority);
}
public bool update(string label, Priority priority, double count, double total) {
if (priority < current_priority)
return false;
stop(priority, false);
if (count <= 0.0 || total <= 0.0 || count >= total) {
clear(priority);
return false;
}
current_priority = priority;
double fraction = count / total;
set_fraction(fraction);
set_text(_("%s (%d%%)").printf(label, (int) (fraction * 100.0)));
should_be_visible = true;
#if UNITY_SUPPORT
// UnityProgressBar: try to draw & set progress
uniprobar.set_visible(true);
uniprobar.set_progress(fraction);
#endif
return true;
}
public void clear(Priority priority) {
if (priority < current_priority)
return;
stop(priority, false);
current_priority = 0;
set_fraction(0.0);
set_text("");
should_be_visible = false;
#if UNITY_SUPPORT
// UnityProgressBar: reset
uniprobar.reset();
#endif
}
private bool on_pulse_timeout() {
pulse();
return true;
}
}
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