109 lines
2.8 KiB
JavaScript
109 lines
2.8 KiB
JavaScript
import GLib from 'gi://GLib';
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import GObject from 'gi://GObject';
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import Clutter from 'gi://Clutter';
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import Shell from 'gi://Shell';
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const SHADER_PATH = GLib.filename_from_uri(GLib.uri_resolve_relative(import.meta.url, 'noise_effect.glsl', GLib.UriFlags.NONE))[0];
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const get_shader_source = _ => {
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try {
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return Shell.get_file_contents_utf8_sync(SHADER_PATH);
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} catch (e) {
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console.warn(`[Blur my Shell] error loading shader from ${SHADER_PATH}: ${e}`);
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return null;
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}
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};
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export const NoiseEffect = new GObject.registerClass({
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GTypeName: "NoiseEffect",
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Properties: {
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'noise': GObject.ParamSpec.double(
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`noise`,
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`Noise`,
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`Amount of noise integrated with the image`,
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GObject.ParamFlags.READWRITE,
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0.0, 1.0,
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0.4,
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),
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'lightness': GObject.ParamSpec.double(
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`lightness`,
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`Lightness`,
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`Lightness of the grey used for the noise`,
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GObject.ParamFlags.READWRITE,
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0.0, 2.0,
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0.4,
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),
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}
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}, class NoiseShader extends Clutter.ShaderEffect {
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constructor(params, settings) {
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super(params);
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this._noise = null;
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this._lightness = null;
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this._static = true;
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this._settings = settings;
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if (params.noise)
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this.noise = params.noise;
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if (params.lightness)
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this.lightness = params.lightness;
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// set shader source
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this._source = get_shader_source();
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if (this._source)
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this.set_shader_source(this._source);
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this.update_enabled();
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}
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get noise() {
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return this._noise;
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}
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set noise(value) {
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if (this._noise !== value) {
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this._noise = value;
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this.set_uniform_value('noise', parseFloat(this._noise - 1e-6));
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}
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this.update_enabled();
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}
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get lightness() {
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return this._lightness;
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}
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set lightness(value) {
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if (this._lightness !== value) {
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this._lightness = value;
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this.set_uniform_value('lightness', parseFloat(this._lightness - 1e-6));
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}
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}
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update_enabled() {
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// don't anything if this._settings is undefined (when calling super)
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if (this._settings === undefined)
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return;
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this.set_enabled(
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this.noise > 0 &&
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this._settings.COLOR_AND_NOISE &&
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this._static
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);
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}
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vfunc_paint_target(paint_node = null, paint_context = null) {
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this.set_uniform_value("tex", 0);
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if (paint_node && paint_context)
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super.vfunc_paint_target(paint_node, paint_context);
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else if (paint_node)
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super.vfunc_paint_target(paint_node);
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else
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super.vfunc_paint_target();
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}
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}); |