mirror of
https://github.com/elementary/gala.git
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171 lines
6.0 KiB
Vala
171 lines
6.0 KiB
Vala
/*
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* Copyright 2021 elementary, Inc (https://elementary.io)
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* 2015 Rory J Sanderson
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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public class Gala.Plugins.MaskCorners.Main : Gala.Plugin {
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private const int DEFAULT_CORNER_RADIUS = 6;
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private Gala.WindowManager? wm = null;
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private GLib.Settings settings;
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private int[] corner_radii;
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private List<Clutter.Actor>[] cornermasks;
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private Meta.Display display;
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public override void initialize (Gala.WindowManager wm) {
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this.wm = wm;
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display = wm.get_display ();
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settings = new GLib.Settings (Config.SCHEMA + ".mask-corners");
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setup_cornermasks ();
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settings.changed.connect (resetup_cornermasks);
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}
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public override void destroy () {
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destroy_cornermasks ();
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}
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private void setup_cornermasks () {
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if (!settings.get_boolean ("enable")) {
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return;
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}
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int n_monitors = display.get_n_monitors ();
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corner_radii = new int[n_monitors];
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cornermasks = new List<Clutter.Actor>[n_monitors];
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for (int m = 0; m < n_monitors; m++) {
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corner_radii[m] = Utils.scale_to_int (DEFAULT_CORNER_RADIUS, display.get_monitor_scale (m));
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}
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if (settings.get_boolean ("only-on-primary")) {
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add_cornermasks (display.get_primary_monitor ());
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} else {
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for (int m = 0; m < n_monitors; m++)
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add_cornermasks (m);
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}
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if (settings.get_boolean ("disable-on-fullscreen")) {
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display.in_fullscreen_changed.connect (fullscreen_changed);
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}
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unowned Meta.MonitorManager monitor_manager = display.get_context ().get_backend ().get_monitor_manager ();
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monitor_manager.monitors_changed.connect (resetup_cornermasks);
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display.gl_video_memory_purged.connect (resetup_cornermasks);
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}
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private void destroy_cornermasks () {
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display.gl_video_memory_purged.disconnect (resetup_cornermasks);
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unowned Meta.MonitorManager monitor_manager = display.get_context ().get_backend ().get_monitor_manager ();
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monitor_manager.monitors_changed.disconnect (resetup_cornermasks);
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display.in_fullscreen_changed.disconnect (fullscreen_changed);
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foreach (unowned List<Clutter.Actor> list in cornermasks) {
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foreach (Clutter.Actor actor in list) {
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actor.destroy ();
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}
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}
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}
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private void resetup_cornermasks () {
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destroy_cornermasks ();
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setup_cornermasks ();
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}
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private void fullscreen_changed () {
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for (int i = 0; i < display.get_n_monitors (); i++) {
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foreach (Clutter.Actor actor in cornermasks[i]) {
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if (display.get_monitor_in_fullscreen (i)) {
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actor.hide ();
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} else {
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actor.show ();
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}
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}
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}
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}
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private void add_cornermasks (int monitor_no) {
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var monitor_geometry = display.get_monitor_geometry (monitor_no);
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var canvas = new Clutter.Canvas ();
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canvas.set_size (corner_radii[monitor_no], corner_radii[monitor_no]);
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canvas.draw.connect ((context) => draw_cornermask (context, monitor_no));
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canvas.invalidate ();
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var actor = new Clutter.Actor ();
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actor.set_content (canvas);
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actor.set_size (corner_radii[monitor_no], corner_radii[monitor_no]);
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actor.set_position (monitor_geometry.x, monitor_geometry.y);
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actor.set_pivot_point ((float) 0.5, (float) 0.5);
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cornermasks[monitor_no].append (actor);
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wm.stage.add_child (actor);
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for (int p = 1; p < 4; p++) {
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var clone = new Clutter.Clone (actor);
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clone.rotation_angle_z = p * 90;
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switch (p) {
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case 1:
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clone.set_position (monitor_geometry.x + monitor_geometry.width, monitor_geometry.y);
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break;
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case 2:
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clone.set_position (monitor_geometry.x + monitor_geometry.width, monitor_geometry.y + monitor_geometry.height);
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break;
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case 3:
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clone.set_position (monitor_geometry.x, monitor_geometry.y + monitor_geometry.height);
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break;
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}
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cornermasks[monitor_no].append (clone);
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wm.stage.add_child (clone);
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}
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}
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private bool draw_cornermask (Cairo.Context context, int monitor_no) requires (corner_radii.length > monitor_no) {
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var buffer = new Drawing.BufferSurface (corner_radii[monitor_no], corner_radii[monitor_no]);
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var buffer_context = buffer.context;
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buffer_context.arc (corner_radii[monitor_no], corner_radii[monitor_no], corner_radii[monitor_no], Math.PI, 1.5 * Math.PI);
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buffer_context.line_to (0, 0);
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buffer_context.line_to (0, corner_radii[monitor_no]);
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buffer_context.set_source_rgb (0, 0, 0);
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buffer_context.fill ();
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context.set_operator (Cairo.Operator.CLEAR);
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context.paint ();
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context.set_operator (Cairo.Operator.OVER);
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context.set_source_surface (buffer.surface, 0, 0);
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context.paint ();
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return true;
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}
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}
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public Gala.PluginInfo register_plugin () {
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return {
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"Mask Corners",
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"Gala Developers",
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typeof (Gala.Plugins.MaskCorners.Main),
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Gala.PluginFunction.ADDITION,
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Gala.LoadPriority.IMMEDIATE
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};
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}
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