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import GObject from 'gi://GObject';
import * as utils from '../conveniences/utils.js';
import * as uniforms from '../conveniences/shader_uniforms.js';
const Shell = await utils.import_in_shell_only('gi://Shell');
const Clutter = await utils.import_in_shell_only('gi://Clutter');
const SHADER_FILENAME = 'downscale.glsl';
const SHADER_SOURCE = utils.get_shader_source(Shell, SHADER_FILENAME, import.meta.url);
const DEFAULT_PARAMS = {
divider: 8, downsampling_mode: 0, opacity_factor: 1, width: 0, height: 0
};
const DOWNSCALE_EFFECT_META = {
GTypeName: "DownscaleEffect",
Properties: {
'divider': GObject.ParamSpec.int(
`divider`,
`Divider`,
`Divider`,
GObject.ParamFlags.READWRITE,
0, 64,
8,
),
'downsampling_mode': GObject.ParamSpec.int(
`downsampling_mode`,
`Downsampling mode`,
`Downsampling mode`,
GObject.ParamFlags.READWRITE,
0, 2,
0,
),
'opacity_factor': GObject.ParamSpec.double(
`opacity_factor`,
`Opacity factor`,
`Opacity factor`,
GObject.ParamFlags.READWRITE,
0.0, 1.0,
1.0,
),
'width': GObject.ParamSpec.double(
`width`,
`Width`,
`Width`,
GObject.ParamFlags.READWRITE,
0.0, Number.MAX_SAFE_INTEGER,
0.0,
),
'height': GObject.ParamSpec.double(
`height`,
`Height`,
`Height`,
GObject.ParamFlags.READWRITE,
0.0, Number.MAX_SAFE_INTEGER,
0.0,
)
}
};
const DownscaleEffectClass = utils.IS_IN_PREFERENCES ? null : class DownscaleEffect extends Clutter.ShaderEffect {
constructor(params) {
super();
utils.initialize_shader_effect(this, SHADER_SOURCE);
utils.setup_params(this, params);
}
static get default_params() {
return DEFAULT_PARAMS;
}
get divider() {
return this._divider;
}
set divider(value) {
const v = Math.max(1, value || 1);
if (this._divider !== v) {
this._divider = v;
uniforms.set_uniform(this, 'divider', this._divider);
}
}
get downsampling_mode() {
return this._downsampling_mode;
}
set downsampling_mode(value) {
if (this._downsampling_mode !== value) {
this._downsampling_mode = value;
uniforms.set_uniform(this, 'downsampling_mode', this._downsampling_mode);
}
}
get opacity_factor() {
return this._opacity_factor;
}
set opacity_factor(value) {
if (this._opacity_factor !== value) {
this._opacity_factor = value;
uniforms.set_uniform(this, 'opacity_factor', parseFloat(this._opacity_factor));
}
}
get width() {
return this._width;
}
set width(value) {
const v = Math.max(1, value || 1);
if (this._width !== v) {
this._width = v;
uniforms.set_uniform(this, 'width', parseFloat(this._width - 1e-6));
}
}
get height() {
return this._height;
}
set height(value) {
const v = Math.max(1, value || 1);
if (this._height !== v) {
this._height = v;
uniforms.set_uniform(this, 'height', parseFloat(this._height - 1e-6));
}
}
vfunc_set_actor(actor) {
if (this._actor_connection_size_id) {
let old_actor = this.get_actor();
old_actor?.disconnect(this._actor_connection_size_id);
}
if (actor) {
this.width = actor.width;
this.height = actor.height;
this._actor_connection_size_id = actor.connect('notify::size', _ => {
this.width = actor.width;
this.height = actor.height;
});
}
else
this._actor_connection_size_id = null;
super.vfunc_set_actor(actor);
}
vfunc_paint_target(paint_node, paint_context) {
uniforms.upload_uniforms(this);
const pipeline = this.get_pipeline();
if (pipeline) {
pipeline.set_layer_filters(0, 9728, 9728);
}
super.vfunc_paint_target(paint_node, paint_context);
}
};
export const DownscaleEffect = utils.IS_IN_PREFERENCES
? { default_params: DEFAULT_PARAMS }
: utils.register_shader_effect(DOWNSCALE_EFFECT_META, DownscaleEffectClass, SHADER_SOURCE);
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