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Diffstat (limited to 'raveos-gnome-theme/theme-data/extensions/installed/burn-my-windows@schneegans.github.com/src/effects/PixelWipe.js')
| -rw-r--r-- | raveos-gnome-theme/theme-data/extensions/installed/burn-my-windows@schneegans.github.com/src/effects/PixelWipe.js | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/raveos-gnome-theme/theme-data/extensions/installed/burn-my-windows@schneegans.github.com/src/effects/PixelWipe.js b/raveos-gnome-theme/theme-data/extensions/installed/burn-my-windows@schneegans.github.com/src/effects/PixelWipe.js new file mode 100644 index 0000000..6f9a3bc --- /dev/null +++ b/raveos-gnome-theme/theme-data/extensions/installed/burn-my-windows@schneegans.github.com/src/effects/PixelWipe.js @@ -0,0 +1,120 @@ +////////////////////////////////////////////////////////////////////////////////////////// +// ) ( // +// ( /( ( ( ) ( ( ( ( )\ ) ( ( // +// )\()) ))\ )( ( ( )\ ) )\))( )\ ( (()/( ( )\))( ( // +// ((_)\ /((_|()\ )\ ) )\ '(()/( ((_)()((_) )\ ) ((_)))\((_)()\ )\ // +// | |(_|_))( ((_)_(_/( _((_)) )(_)) _(()((_|_)_(_/( _| |((_)(()((_|(_) // +// | '_ \ || | '_| ' \)) | ' \()| || | \ V V / | ' \)) _` / _ \ 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 the ShaderFactory only in the Shell process as it is not required in the +// preferences process. The preferences process does not create any shader instances, it +// only uses the static metadata of the effect. +const ShaderFactory = await utils.importInShellOnly('./ShaderFactory.js'); + +const _ = await utils.importGettext(); + +////////////////////////////////////////////////////////////////////////////////////////// +// This effect pixelates the window texture and hides the pixels radially, starting // +// from the pointer position. // +////////////////////////////////////////////////////////////////////////////////////////// + +// 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) => { + // Store uniform locations of newly created shaders. + shader._uPixelSize = shader.get_uniform_location('uPixelSize'); + shader._uStartPos = shader.get_uniform_location('uStartPos'); + + // Write all uniform values at the start of each animation. + shader.connect( + 'begin-animation', (shader, settings, forOpening, testMode, actor) => { + // Because the actor position may change after the begin-animation signal is + // called, we set the uStartPos uniform during the update callback. + shader._startPointerPos = global.get_pointer(); + shader._actor = actor; + + shader.set_uniform_float(shader._uPixelSize, 1, + [settings.get_int('pixel-wipe-pixel-size')]); + }); + + // We set the uStartPos uniform during the update callback as the actor position + // may not be set up properly before the begin animation callback. + shader.connect('update-animation', (shader) => { + if (shader._startPointerPos) { + const [x, y] = shader._startPointerPos; + const [ok, localX, localY] = shader._actor.transform_stage_point(x, y); + + if (ok) { + let startPos = [ + Math.max(0.0, Math.min(1.0, localX / shader._actor.width)), + Math.max(0.0, Math.min(1.0, localY / shader._actor.height)) + ]; + shader.set_uniform_float(shader._uStartPos, 2, startPos); + } + } + }); + + // Make sure to drop the reference to the actor. + shader.connect('end-animation', (shader) => { + shader._actor = null; + }); + }); + } + + // ---------------------------------------------------------------------------- metadata + + // The effect is available on all GNOME Shell versions supported by this extension. + static getMinShellVersion() { + return [3, 36]; + } + + // 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 'pixel-wipe'; + } + + // 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 _('Pixel Wipe'); + } + + // -------------------------------------------------------------------- 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('pixel-wipe-animation-time'); + dialog.bindAdjustment('pixel-wipe-pixel-size'); + } + + // ---------------------------------------------------------------- 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}; + } +} |