/*
* Copyright 2021 elementary, Inc (https://elementary.io)
* 2015 Rory J Sanderson
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* 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 .
*/
public class Gala.Plugins.MaskCorners.Main : Gala.Plugin {
private const int DEFAULT_CORNER_RADIUS = 6;
private Gala.WindowManager? wm = null;
private GLib.Settings settings;
private int corner_radius = DEFAULT_CORNER_RADIUS;
private List[] cornermasks;
private Meta.Display display;
public override void initialize (Gala.WindowManager wm) {
this.wm = wm;
display = wm.get_display ();
settings = new GLib.Settings (Config.SCHEMA + ".mask-corners");
setup_cornermasks ();
settings.changed.connect (resetup_cornermasks);
}
public override void destroy () {
destroy_cornermasks ();
}
private void setup_cornermasks () {
if (!settings.get_boolean ("enable")) {
return;
}
var scale = Utils.get_ui_scaling_factor ();
int n_monitors = display.get_n_monitors ();
cornermasks = new List[n_monitors];
corner_radius = DEFAULT_CORNER_RADIUS * scale;
if (settings.get_boolean ("only-on-primary")) {
add_cornermasks (display.get_primary_monitor ());
} else {
for (int m = 0; m < n_monitors; m++)
add_cornermasks (m);
}
if (settings.get_boolean ("disable-on-fullscreen")) {
display.in_fullscreen_changed.connect (fullscreen_changed);
}
unowned Meta.MonitorManager monitor_manager = Meta.MonitorManager.@get ();
monitor_manager.monitors_changed.connect (resetup_cornermasks);
display.gl_video_memory_purged.connect (resetup_cornermasks);
}
private void destroy_cornermasks () {
display.gl_video_memory_purged.disconnect (resetup_cornermasks);
unowned Meta.MonitorManager monitor_manager = Meta.MonitorManager.@get ();
monitor_manager.monitors_changed.disconnect (resetup_cornermasks);
display.in_fullscreen_changed.disconnect (fullscreen_changed);
foreach (unowned List list in cornermasks) {
foreach (Clutter.Actor actor in list) {
actor.destroy ();
}
}
}
private void resetup_cornermasks () {
destroy_cornermasks ();
setup_cornermasks ();
}
private void fullscreen_changed () {
for (int i = 0; i < display.get_n_monitors (); i++) {
foreach (Clutter.Actor actor in cornermasks[i]) {
if (display.get_monitor_in_fullscreen (i)) {
actor.hide ();
} else {
actor.show ();
}
}
}
}
private void add_cornermasks (int monitor_no) {
var monitor_geometry = display.get_monitor_geometry (monitor_no);
var canvas = new Clutter.Canvas ();
canvas.set_size (corner_radius, corner_radius);
canvas.draw.connect (draw_cornermask);
canvas.invalidate ();
var actor = new Clutter.Actor ();
actor.set_content (canvas);
actor.set_size (corner_radius, corner_radius);
actor.set_position (monitor_geometry.x, monitor_geometry.y);
actor.set_pivot_point ((float) 0.5, (float) 0.5);
cornermasks[monitor_no].append (actor);
wm.stage.add_child (actor);
for (int p = 1; p < 4; p++) {
var clone = new Clutter.Clone (actor);
clone.rotation_angle_z = p * 90;
switch (p) {
case 1:
clone.set_position (monitor_geometry.x + monitor_geometry.width, monitor_geometry.y);
break;
case 2:
clone.set_position (monitor_geometry.x + monitor_geometry.width, monitor_geometry.y + monitor_geometry.height);
break;
case 3:
clone.set_position (monitor_geometry.x, monitor_geometry.y + monitor_geometry.height);
break;
}
cornermasks[monitor_no].append (clone);
wm.stage.add_child (clone);
}
}
private bool draw_cornermask (Cairo.Context context) {
var buffer = new Drawing.BufferSurface (corner_radius, corner_radius);
var buffer_context = buffer.context;
buffer_context.arc (corner_radius, corner_radius, corner_radius, Math.PI, 1.5 * Math.PI);
buffer_context.line_to (0, 0);
buffer_context.line_to (0, corner_radius);
buffer_context.set_source_rgb (0, 0, 0);
buffer_context.fill ();
context.set_operator (Cairo.Operator.CLEAR);
context.paint ();
context.set_operator (Cairo.Operator.OVER);
context.set_source_surface (buffer.surface, 0, 0);
context.paint ();
return true;
}
}
public Gala.PluginInfo register_plugin () {
return {
"Mask Corners",
"Gala Developers",
typeof (Gala.Plugins.MaskCorners.Main),
Gala.PluginFunction.ADDITION,
Gala.LoadPriority.IMMEDIATE
};
}