Simon Schneegans
71 lines
3.1 KiB
JavaScript
71 lines
3.1 KiB
JavaScript
//////////////////////////////////////////////////////////////////////////////////////////
|
|
// ) ( //
|
|
// ( /( ( ( ) ( ( ( ( )\ ) ( ( //
|
|
// )\()) ))\ )( ( ( )\ ) )\))( )\ ( (()/( ( )\))( ( //
|
|
// ((_)\ /((_|()\ )\ ) )\ '(()/( ((_)()((_) )\ ) ((_)))\((_)()\ )\ //
|
|
// | |(_|_))( ((_)_(_/( _((_)) )(_)) _(()((_|_)_(_/( _| |((_)(()((_|(_) //
|
|
// | '_ \ || | '_| ' \)) | ' \()| || | \ V V / | ' \)) _` / _ \ V V (_-< //
|
|
// |_.__/\_,_|_| |_||_| |_|_|_| \_, | \_/\_/|_|_||_|\__,_\___/\_/\_//__/ //
|
|
// |__/ //
|
|
// Copyright (c) 2021 Simon Schneegans //
|
|
// Released under the GPLv3 or later. See LICENSE file for details. //
|
|
//////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
'use strict';
|
|
|
|
//////////////////////////////////////////////////////////////////////////////////////////
|
|
// This is the base class for all effects of Burn-My-Windows. It provides the logic //
|
|
// required for creating shader instances and reusing them as much as possible. //
|
|
//////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
var Effect = class Effect {
|
|
|
|
// The _freeShaders array contains previously created shaders which are not currently in
|
|
// use.
|
|
constructor() {
|
|
this._freeShaders = [];
|
|
}
|
|
|
|
// ---------------------------------------------------------------- API for extension.js
|
|
|
|
// This is called from extension.js whenever a window is opened or closed with this
|
|
// effect. It returns an instance of the shader class, trying to reuse previously
|
|
// created shaders. If a new shader instance is required, it calls this.createShader().
|
|
// This method must be defined be the derived class!
|
|
getShader(actor, settings, forOpening) {
|
|
let shader;
|
|
|
|
if (this._freeShaders.length == 0) {
|
|
shader = this.createShader(this);
|
|
} else {
|
|
shader = this._freeShaders.pop();
|
|
}
|
|
|
|
shader.updateAnimation(actor, settings, forOpening);
|
|
|
|
return shader;
|
|
}
|
|
|
|
// This is called from extension.js whenever a shader previously retrieved with
|
|
// getShader() is not used anymore.
|
|
freeShader(shader) {
|
|
this._freeShaders.push(shader);
|
|
}
|
|
|
|
// ------------------------------------- "virtual" methods - feel free to override them!
|
|
|
|
// The getActorScale() is called from extension.js to adjust the actor's size during the
|
|
// animation. Override this, if your effect requires drawing something beyond the usual
|
|
// bounds of the actor. This only works for GNOME 3.38+.
|
|
getActorScale(settings) {
|
|
return {x: 1.0, y: 1.0};
|
|
}
|
|
|
|
// This is called from extension.js if the extension is disabled. This should free all
|
|
// static resources. So if you have to delete some textures for example, you should
|
|
// override this.
|
|
cleanUp() {
|
|
freeShaders = [];
|
|
}
|
|
}
|