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import St from 'gi://St';
import Clutter from 'gi://Clutter';
/// A dummy `Pipeline`, for dynamic blur only.
/// Instead of a pipeline id, we take the settings of the component we want to blur.
export const DummyPipeline = class DummyPipeline {
constructor(effects_manager, settings, actor = null, options = {}) {
this.effects_manager = effects_manager;
this.settings = settings;
this.corner_radius_key = options.corner_radius_key ?? 'corner-radius';
this.corner_radius_getter = options.corner_radius_getter ?? (() => this.settings.CORNER_RADIUS);
this.opacity_factor = 1;
this.effect = null;
this.attach_effect_to_actor(actor);
}
create_background_with_effect(
background_group,
widget_name
) {
// create the new actor
this.actor = new St.Widget({ name: widget_name });
this.attach_effect_to_actor(this.actor);
// a dummy `BackgroundManager`, just to access the pipeline easily
let bg_manager = new Clutter.Actor;
bg_manager.backgroundActor = this.actor;
bg_manager._bms_pipeline = this;
background_group.insert_child_at_index(this.actor, 0);
return [this.actor, bg_manager];
};
attach_effect_to_actor(actor) {
// set the actor
if (actor)
this.actor = actor;
else {
this.remove_pipeline_from_actor();
return;
}
// build the new effect to be added
this.build_effect({
unscaled_radius: this.get_unscaled_radius(),
brightness: this.get_brightness(),
unscaled_corner_radius: this.corner_radius_getter(),
});
this.actor_destroy_id = this.actor.connect(
"destroy", () => this.remove_pipeline_from_actor()
);
// add the effect to the actor
if (this.actor)
this.actor.add_effect(this.effect);
else
this._warn(`could not add effect to actor, actor does not exist anymore`);
}
remove_pipeline_from_actor() {
this.remove_effect();
if (this.actor && this.actor_destroy_id)
this.actor.disconnect(this.actor_destroy_id);
this.actor_destroy_id = null;
this.actor = null;
}
build_effect(params) {
// create the effect
this.effect = this.effects_manager.new_native_dynamic_gaussian_blur_effect(params);
// connect to settings changes, using the true gsettings object
this._sigma_changed_id = this.settings.settings.connect('changed::sigma', () => this.update_effect());
this._brightness_changed_id = this.settings.settings.connect('changed::brightness', () => this.update_effect());
this._corner_radius_changed_id = this.settings.settings.connect(
`changed::${this.corner_radius_key}`,
() => this.update_effect()
);
}
set_opacity_factor(opacity_factor) {
opacity_factor = Math.max(0, Math.min(1, opacity_factor));
if (this.opacity_factor === opacity_factor)
return;
this.opacity_factor = opacity_factor;
this.update_effect();
}
update_effect() {
if (!this.effect)
return;
this.effect.unscaled_radius = this.get_unscaled_radius();
this.effect.brightness = this.get_brightness();
this.effect.unscaled_corner_radius = this.corner_radius_getter();
}
get_unscaled_radius() {
return 2 * this.settings.SIGMA * this.opacity_factor;
}
get_brightness() {
return 1 - (1 - this.settings.BRIGHTNESS) * this.opacity_factor;
}
repaint_effect() {
this.effect?.queue_repaint();
}
/// Remove every effect from the actor it is attached to. Please note that they are not
/// destroyed, but rather stored (thanks to the `EffectManager` class) to be reused later.
remove_effect() {
if (this.effect)
this.effects_manager.remove(this.effect);
this.effect = null;
if (this._sigma_changed_id)
this.settings.settings.disconnect(this._sigma_changed_id);
if (this._brightness_changed_id)
this.settings.settings.disconnect(this._brightness_changed_id);
if (this._corner_radius_changed_id)
this.settings.settings.disconnect(this._corner_radius_changed_id);
delete this._sigma_changed_id;
delete this._brightness_changed_id;
delete this._corner_radius_changed_id;
}
/// Do nothing for this dummy pipeline.
/// Note: exposed to public API.
change_pipeline_to() { return; }
/// Note: exposed to public API.
destroy() {
this.remove_pipeline_from_actor();
}
_warn(str) {
console.warn(`[Blur my Shell > dummy pip] ${str}`);
}
};
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