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Diffstat (limited to 'raveos-gnome-theme/theme-data/extensions/installed/burn-my-windows@schneegans.github.com/src/effects/Matrix.js')
| -rw-r--r-- | raveos-gnome-theme/theme-data/extensions/installed/burn-my-windows@schneegans.github.com/src/effects/Matrix.js | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/raveos-gnome-theme/theme-data/extensions/installed/burn-my-windows@schneegans.github.com/src/effects/Matrix.js b/raveos-gnome-theme/theme-data/extensions/installed/burn-my-windows@schneegans.github.com/src/effects/Matrix.js new file mode 100644 index 0000000..45065ec --- /dev/null +++ b/raveos-gnome-theme/theme-data/extensions/installed/burn-my-windows@schneegans.github.com/src/effects/Matrix.js @@ -0,0 +1,125 @@ +////////////////////////////////////////////////////////////////////////////////////////// +// ) ( // +// ( /( ( ( ) ( ( ( ( )\ ) ( ( // +// )\()) ))\ )( ( ( )\ ) )\))( )\ ( (()/( ( )\))( ( // +// ((_)\ /((_|()\ )\ ) )\ '(()/( ((_)()((_) )\ ) ((_)))\((_)()\ )\ // +// | |(_|_))( ((_)_(_/( _((_)) )(_)) _(()((_|_)_(_/( _| |((_)(()((_|(_) // +// | '_ \ || | '_| ' \)) | ' \()| || | \ V V / | ' \)) _` / _ \ V V (_-< // +// |_.__/\_,_|_| |_||_| |_|_|_| \_, | \_/\_/|_|_||_|\__,_\___/\_/\_//__/ // +// |__/ // +////////////////////////////////////////////////////////////////////////////////////////// + +// SPDX-FileCopyrightText: Simon Schneegans <code@simonschneegans.de> +// SPDX-License-Identifier: GPL-3.0-or-later + +'use strict'; + +import * as utils from '../utils.js'; + +// We import some modules only in the Shell process as they are not available in the +// preferences process. They are used only in the creator function of the ShaderFactory +// which is only called within GNOME Shell's process. +const ShaderFactory = await utils.importInShellOnly('./ShaderFactory.js'); + +const _ = await utils.importGettext(); + +////////////////////////////////////////////////////////////////////////////////////////// +// The Matrix shader multiplies a grid of random letters with some gradients which are // +// moving from top to bottom. The speed of the moving gradients is chosen randomly. // +// Also, there is a random delay making the gradients not drop all at the same time. // +// This effect is not available on GNOME 3.3x, due to the limitation described in the // +// documentation of vfunc_paint_target further down in this file. // +////////////////////////////////////////////////////////////////////////////////////////// + +// The effect class can be used to get some metadata (like the effect's name or supported +// GNOME Shell versions), to initialize the respective page of the settings dialog, as +// well as to create the actual shader for the effect. +export default class Effect { + + // The constructor creates a ShaderFactory which will be used by extension.js to create + // shader instances for this effect. The shaders will be automagically created using the + // GLSL file in resources/shaders/<nick>.glsl. The callback will be called for each + // newly created shader instance. + constructor() { + this.shaderFactory = new ShaderFactory(Effect.getNick(), (shader) => { + // Create the texture in the first call. + if (!this._fontTexture) { + this._fontTexture = utils.getImageResource('/img/matrixFont.png'); + } + + // Store uniform locations of newly created shaders. + shader._uFontTexture = shader.get_uniform_location('uFontTexture'); + shader._uTrailColor = shader.get_uniform_location('uTrailColor'); + shader._uTipColor = shader.get_uniform_location('uTipColor'); + shader._uLetterSize = shader.get_uniform_location('uLetterSize'); + shader._uRandomness = shader.get_uniform_location('uRandomness'); + shader._uOverShoot = shader.get_uniform_location('uOverShoot'); + + // Write all uniform values at the start of each animation. + shader.connect('begin-animation', (shader, settings) => { + // clang-format off + shader.set_uniform_float(shader._uTrailColor, 3, utils.parseColor(settings.get_string('matrix-trail-color'))); + shader.set_uniform_float(shader._uTipColor, 3, utils.parseColor(settings.get_string('matrix-tip-color'))); + shader.set_uniform_float(shader._uLetterSize, 1, [settings.get_int('matrix-scale')]); + shader.set_uniform_float(shader._uRandomness, 1, [settings.get_double('matrix-randomness')]); + shader.set_uniform_float(shader._uOverShoot, 1, [settings.get_double('matrix-overshoot')]); + // clang-format on + }); + + // This is required to bind the font texture for drawing. Sadly, this seems to be + // impossible under GNOME 3.3x as this.get_pipeline() is not available. It was + // called get_target() back then but this is not wrapped in GJS. + // https://gitlab.gnome.org/GNOME/mutter/-/blob/gnome-3-36/clutter/clutter/clutter-offscreen-effect.c#L598 + shader.connect('update-animation', (shader) => { + const pipeline = shader.get_pipeline(); + + // Bind the font texture. + pipeline.set_layer_texture(1, this._fontTexture.get_texture()); + pipeline.set_uniform_1i(shader._uFontTexture, 1); + }); + }); + } + + // ---------------------------------------------------------------------------- metadata + + // This effect is only available on GNOME Shell 40+. + static getMinShellVersion() { + return [40, 0]; + } + + // This will be called in various places where a unique identifier for this effect is + // required. It should match the prefix of the settings keys which store whether the + // effect is enabled currently (e.g. '*-enable-effect'), and its animation time + // (e.g. '*-animation-time'). + static getNick() { + return 'matrix'; + } + + // This will be shown in the sidebar of the preferences dialog as well as in the + // drop-down menus where the user can choose the effect. + static getLabel() { + return _('Matrix'); + } + + // -------------------------------------------------------------------- API for prefs.js + + // This is called by the preferences dialog whenever a new effect profile is loaded. It + // binds all user interface elements to the respective settings keys of the profile. + static bindPreferences(dialog) { + dialog.bindAdjustment('matrix-animation-time'); + dialog.bindAdjustment('matrix-scale'); + dialog.bindAdjustment('matrix-randomness'); + dialog.bindAdjustment('matrix-overshoot'); + dialog.bindColorButton('matrix-trail-color'); + dialog.bindColorButton('matrix-tip-color'); + } + + // ---------------------------------------------------------------- API for extension.js + + // The getActorScale() is called from extension.js to adjust the actor's size during the + // animation. This is useful if the effect requires drawing something beyond the usual + // bounds of the actor. This only works for GNOME 3.38+. + static getActorScale(settings, forOpening, actor) { + return {x: 1.0, y: 1.0 + settings.get_double('matrix-overshoot')}; + } +} |