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import GObject from 'gi://GObject';
import * as utils from '../conveniences/utils.js';
const Shell = await utils.import_in_shell_only('gi://Shell');
const Clutter = await utils.import_in_shell_only('gi://Clutter');
const SHADER_FILENAME = 'luminosity.glsl';
const DEFAULT_PARAMS = {
brightness_shift: 0., brightness_multiplicator: 1., contrast: 1., contrast_center: 0.5, saturation_multiplicator: 1.
};
export const LuminosityEffect = utils.IS_IN_PREFERENCES ?
{ default_params: DEFAULT_PARAMS } :
new GObject.registerClass({
GTypeName: "LuminosityEffect",
Properties: {
'brightness_shift': GObject.ParamSpec.double(
`brightness_shift`,
`Brightness shift`,
`Brightness shift value in shader`,
GObject.ParamFlags.READWRITE,
-1.0, 1.0,
0.0,
),
'brightness_multiplicator': GObject.ParamSpec.double(
`brightness_multiplicator`,
`Brightness multiplicator`,
`Brightness multiplicator value in shader`,
GObject.ParamFlags.READWRITE,
0.0, 2.0,
1.0,
),
'contrast': GObject.ParamSpec.double(
`contrast`,
`Contrast`,
`Contrast value in shader`,
GObject.ParamFlags.READWRITE,
0.0, 2.0,
1.0,
),
'contrast_center': GObject.ParamSpec.double(
`contrast_center`,
`Contrast center`,
`Contrast center value in shader`,
GObject.ParamFlags.READWRITE,
0.0, 1.0,
0.5,
),
'saturation_multiplicator': GObject.ParamSpec.double(
`saturation_multiplicator`,
`Saturation multiplicator`,
`Saturation multiplicator value in shader`,
GObject.ParamFlags.READWRITE,
0.0, 2.0,
1.0,
),
}
}, class LuminosityEffect extends Clutter.ShaderEffect {
constructor(params) {
super(params);
utils.setup_params(this, params);
// set shader source
this._source = utils.get_shader_source(Shell, SHADER_FILENAME, import.meta.url);
if (this._source)
this.set_shader_source(this._source);
}
static get default_params() {
return DEFAULT_PARAMS;
}
get brightness_shift() {
return this._brightness;
}
set brightness_shift(value) {
if (this._brightness_shift !== value) {
this._brightness_shift = value;
this.set_uniform_value('brightness_shift', parseFloat(this._brightness_shift - 1e-6));
}
}
get brightness_multiplicator() {
return this._brightness_multiplicator;
}
set brightness_multiplicator(value) {
if (this._brightness_multiplicator !== value) {
this._brightness_multiplicator = value;
let brightness_mul = 600.;
if (value < 1.995)
brightness_mul = 3. * (1. / (1. - (value / 2.) ** 2) - 1.);
this.set_uniform_value('brightness_multiplicator', parseFloat(brightness_mul - 1e-6));
}
}
get contrast() {
return this._contrast;
}
set contrast(value) {
if (this._contrast !== value) {
this._contrast = value;
this.set_uniform_value('contrast', parseFloat(this._contrast - 1e-6));
}
}
get contrast_center() {
return this._contrast_center;
}
set contrast_center(value) {
if (this._contrast_center !== value) {
this._contrast_center = value;
this.set_uniform_value('contrast_center', parseFloat(this._contrast_center - 1e-6));
}
}
get saturation_multiplicator() {
return this._saturation_multiplicator;
}
set saturation_multiplicator(value) {
if (this._saturation_multiplicator !== value) {
this._saturation_multiplicator = value;
let saturation_mul = 600.;
if (value < 1.995)
saturation_mul = 3. * (1. / (1. - (value / 2.) ** 2) - 1.);
this.set_uniform_value('saturation_multiplicator', parseFloat(saturation_mul - 1e-6));
}
}
});
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