diff --git a/extension.js b/extension.js
index dee6049..93458e6 100644
--- a/extension.js
+++ b/extension.js
@@ -38,6 +38,7 @@ const ALL_EFFECTS = [
Me.imports.src.EnergizeA.EnergizeA,
Me.imports.src.EnergizeB.EnergizeB,
Me.imports.src.Fire.Fire,
+ Me.imports.src.Hexagon.Hexagon,
Me.imports.src.Matrix.Matrix,
Me.imports.src.SnapOfDisintegration.SnapOfDisintegration,
Me.imports.src.TRexAttack.TRexAttack,
diff --git a/prefs.js b/prefs.js
index c225aba..04e7f54 100644
--- a/prefs.js
+++ b/prefs.js
@@ -37,6 +37,7 @@ const ALL_EFFECTS = [
Me.imports.src.EnergizeA.EnergizeA,
Me.imports.src.EnergizeB.EnergizeB,
Me.imports.src.Fire.Fire,
+ Me.imports.src.Hexagon.Hexagon,
Me.imports.src.Matrix.Matrix,
Me.imports.src.SnapOfDisintegration.SnapOfDisintegration,
Me.imports.src.TRexAttack.TRexAttack,
diff --git a/resources/ui/gtk3/Hexagon.ui b/resources/ui/gtk3/Hexagon.ui
new file mode 100644
index 0000000..8f1f9ee
--- /dev/null
+++ b/resources/ui/gtk3/Hexagon.ui
@@ -0,0 +1,340 @@
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/resources/ui/gtk4/Hexagon.ui b/resources/ui/gtk4/Hexagon.ui
new file mode 100644
index 0000000..798f125
--- /dev/null
+++ b/resources/ui/gtk4/Hexagon.ui
@@ -0,0 +1,284 @@
+
+
+
+
+
+
\ No newline at end of file
diff --git a/schemas/org.gnome.shell.extensions.burn-my-windows.gschema.xml b/schemas/org.gnome.shell.extensions.burn-my-windows.gschema.xml
index 99f1bee..f852dad 100644
--- a/schemas/org.gnome.shell.extensions.burn-my-windows.gschema.xml
+++ b/schemas/org.gnome.shell.extensions.burn-my-windows.gschema.xml
@@ -273,6 +273,58 @@
Number of claw scratches drawn on top of each other.
+
+
+
+
+
+ false
+ Hexagon Close Effect
+ Use the Hexagon effect for window closing.
+
+
+
+ false
+ Hexagon Open Effect
+ Use the Hexagon effect for window opening.
+
+
+
+ 1500
+ Hexagon Animation Time
+ The time the Hexagon effect takes.
+
+
+
+ 3.0
+ Hexagon Scale
+ The size of the effect.
+
+
+
+ 2.0
+ Hexagon Line Width
+ The width of the lines.
+
+
+
+ "rgba(200, 255, 255, 0.5)"
+ Hexagon Line Color
+ The color of the lines.
+
+
+
+ "rgba(20, 80, 255, 0.5)"
+ Hexagon Glow Color
+ The color of the glow effect.
+
+
+
+ true
+ Hexagon Additive Blending
+ Use additive blending for the line and the glow.
+
+
diff --git a/src/Hexagon.js b/src/Hexagon.js
new file mode 100644
index 0000000..06ebcd2
--- /dev/null
+++ b/src/Hexagon.js
@@ -0,0 +1,250 @@
+//////////////////////////////////////////////////////////////////////////////////////////
+// ) ( //
+// ( /( ( ( ) ( ( ( ( )\ ) ( ( //
+// )\()) ))\ )( ( ( )\ ) )\))( )\ ( (()/( ( )\))( ( //
+// ((_)\ /((_|()\ )\ ) )\ '(()/( ((_)()((_) )\ ) ((_)))\((_)()\ )\ //
+// | |(_|_))( ((_)_(_/( _((_)) )(_)) _(()((_|_)_(_/( _| |((_)(()((_|(_) //
+// | '_ \ || | '_| ' \)) | ' \()| || | \ V V / | ' \)) _` / _ \ V V (_-< //
+// |_.__/\_,_|_| |_||_| |_|_|_| \_, | \_/\_/|_|_||_|\__,_\___/\_/\_//__/ //
+// |__/ //
+// Copyright (c) 2021 Simon Schneegans //
+// Released under the GPLv3 or later. See LICENSE file for details. //
+//////////////////////////////////////////////////////////////////////////////////////////
+
+'use strict';
+
+const GObject = imports.gi.GObject;
+
+const _ = imports.gettext.domain('burn-my-windows').gettext;
+
+const ExtensionUtils = imports.misc.extensionUtils;
+const Me = imports.misc.extensionUtils.getCurrentExtension();
+const utils = Me.imports.src.utils;
+
+//////////////////////////////////////////////////////////////////////////////////////////
+// This effect overlays a glowing hexagonal grid over the window. The grid cells then //
+// gradually shrink until the window is fully dissolved. //
+//////////////////////////////////////////////////////////////////////////////////////////
+
+// The shader class for this effect is registered further down in this file.
+let Shader = null;
+
+// The effect class is completely static. It 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.
+var Hexagon = class Hexagon {
+
+ // ---------------------------------------------------------------------------- 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. '*-close-effect'), and its animation time
+ // (e.g. '*-animation-time').
+ static getNick() {
+ return 'hexagon';
+ }
+
+ // 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 _('Hexagon');
+ }
+
+ // -------------------------------------------------------------------- API for prefs.js
+
+ // This is called by the preferences dialog. It loads the settings page for this effect,
+ // binds all properties to the settings and appends the page to the main stack of the
+ // preferences dialog.
+ static getPreferences(dialog) {
+
+ // Add the settings page to the builder.
+ dialog.getBuilder().add_from_resource(`/ui/${utils.getGTKString()}/Hexagon.ui`);
+
+ // Bind all properties.
+ dialog.bindAdjustment('hexagon-animation-time');
+ dialog.bindAdjustment('hexagon-scale');
+ dialog.bindAdjustment('hexagon-line-width');
+ dialog.bindColorButton('hexagon-line-color');
+ dialog.bindColorButton('hexagon-glow-color');
+ dialog.bindSwitch('hexagon-additive-blending');
+
+ // Finally, return the new settings page.
+ return dialog.getBuilder().get_object('hexagon-prefs');
+ }
+
+ // ---------------------------------------------------------------- API for extension.js
+
+ // This is called from extension.js whenever a window is closed with this effect.
+ static createShader(actor, settings, forOpening) {
+ return new Shader(settings, forOpening);
+ }
+
+ // The tweakTransition() is called from extension.js to tweak a window's open / close
+ // transitions - usually windows are faded in / out and scaled up / down by GNOME Shell.
+ // The parameter 'forOpening' is set to true if this is called for a window-open
+ // transition, for a window-close transition it is set to false. The modes can be set to
+ // any value from here: https://gjs-docs.gnome.org/clutter8~8_api/clutter.animationmode.
+ // The only required property is 'opacity', even if it transitions from 1.0 to 1.0. The
+ // current value of the opacity transition is passed as uProgress to the shader.
+ // Tweaking the actor's scale during the transition only works properly for GNOME 3.38+.
+
+ // For this effect, windows should neither be scaled nor faded.
+ static tweakTransition(actor, settings, forOpening) {
+ return {
+ 'opacity': {from: 255, to: 255, mode: 1},
+ 'scale-x': {from: 1.0, to: 1.0, mode: 1},
+ 'scale-y': {from: 1.0, to: 1.0, mode: 1}
+ };
+ }
+}
+
+
+//////////////////////////////////////////////////////////////////////////////////////////
+// The shader class for this effect will only be registered in GNOME Shell's process //
+// (not in the preferences process). It's done this way as Clutter may not be installed //
+// on the system and therefore the preferences would crash. //
+//////////////////////////////////////////////////////////////////////////////////////////
+
+if (utils.isInShellProcess()) {
+
+ const Clutter = imports.gi.Clutter;
+ const shaderSnippets = Me.imports.src.shaderSnippets;
+
+ Shader = GObject.registerClass({}, class Shader extends Clutter.ShaderEffect {
+ _init(settings, forOpening) {
+ super._init({shader_type: Clutter.ShaderType.FRAGMENT_SHADER});
+
+ // Get the two configurable colors. They are directly injected into the shader code
+ // below.
+ const glowColor =
+ Clutter.Color.from_string(settings.get_string('hexagon-glow-color'))[1];
+ const lineColor =
+ Clutter.Color.from_string(settings.get_string('hexagon-line-color'))[1];
+
+ // If we are currently performing integration test, the animation uses a fixed seed.
+ const testMode = settings.get_boolean('test-mode');
+
+ // Feel free to read the inline comments below to learn how this shader works.
+ this.set_shader_source(`
+
+ // Inject some common shader snippets.
+ ${shaderSnippets.standardUniforms()}
+ ${shaderSnippets.noise()}
+
+ const vec2 SEED = vec2(${testMode ? 0 : Math.random()},
+ ${testMode ? 0 : Math.random()});
+ const float SCALE = 10.0 * ${settings.get_double('hexagon-scale')};
+ const float LINE_WIDTH = 0.02 * ${settings.get_double('hexagon-line-width')};
+
+ // This methods generates a procedural hexagonal pattern. It returns four values:
+ // result.xy: This contains cell-relative coordinates for the given point.
+ // [0, 0] is in the center of a cell, [0, 1] at the upper edge,
+ // [sqrt(4.0 / 3.0), 0] at the right tip and so on.
+ // result.z: This is the distance to the closest edge. This is used for shrinking
+ // of the tiles and the sharp overlay lines.
+ // result.w: This is the distance to the closest cell center. This is used for
+ // the glow effect.
+ vec4 getHexagons(vec2 p) {
+
+ // Length of a cell's edge.
+ const float edgeLength = sqrt(4.0 / 3.0);
+
+ // The hexgrid repeats after this distance.
+ const vec2 scale = vec2(3.0 * edgeLength, 2.0);
+
+ // This is a repeating grid of scale-sized cells. Y-values are in the
+ // interval [-1...1], X-value in [-1.5*edgeLength...1.5*edgeLength].
+ vec2 a = mod(p, scale) - scale * 0.5;
+ vec2 aAbs = abs(a);
+
+ // This is the same as above, but offset by half scale.
+ vec2 b = mod(p + scale * 0.5, scale) - scale * 0.5;
+ vec2 bAbs = abs(b);
+
+ // Distance to closer edge, diagonally or horizontally.
+ // Once for cell set A and once for cell set B.
+ float distA = max(aAbs.x / edgeLength + aAbs.y * 0.5, aAbs.y);
+ float distB = max(bAbs.x / edgeLength + bAbs.y * 0.5, bAbs.y);
+
+ // Minimum of both is distance to closest edge.
+ float dist = 1.0 - min(distA, distB);
+
+ // We use the radial distance to the center for glow.
+ float glow = min(dot(a, a), dot(b, b)) / 1.5;
+
+ // Take cell-relative coordinates from the closer cell.
+ vec2 cellCoords = distA < distB ? a : b;
+
+ return vec4(cellCoords, dist, glow);
+ }
+
+ void main() {
+
+ // We simply inverse the progress for opening windows.
+ float progress = ${forOpening ? '1.0-uProgress' : 'uProgress'};
+
+ // Add some smooth noise to the progress so that not every tile behaves the
+ // same.
+ float noise = simplex2D(cogl_tex_coord_in[0].st + SEED);
+ progress = clamp(mix(noise - 1.0, noise + 1.0, progress), 0.0, 1.0);
+
+ // glowProgress fades in in the first half of the animation, tileProgress fades
+ // in in the second half.
+ float glowProgress = smoothstep(0, 1, clamp(progress / 0.5, 0, 1));
+ float tileProgress = smoothstep(0, 1, clamp((progress - 0.5) / 0.5, 0, 1));
+
+ vec2 texScale = vec2(uSizeX, uSizeY) / SCALE;
+ vec4 hex = getHexagons(cogl_tex_coord_in[0].st * texScale);
+
+ if (tileProgress > hex.z) {
+
+ // Crop outer parts of the shrinking tiles.
+ cogl_color_out *= vec4(0.0);
+
+ } else {
+
+ // Make the tiles shrink by offsetting the texture lookup towards the edge
+ // of the cell.
+ vec2 lookupOffset = tileProgress * hex.xy / texScale / (1.0 - tileProgress);
+ cogl_color_out = texture2D(uTexture, cogl_tex_coord_in[0].st + lookupOffset);
+
+ vec4 glow = vec4(${glowColor.red / 255}, ${glowColor.green / 255},
+ ${glowColor.blue / 255}, ${glowColor.alpha / 255});
+ vec4 line = vec4(${lineColor.red / 255}, ${lineColor.green / 255},
+ ${lineColor.blue / 255}, ${lineColor.alpha / 255});
+
+ // For the glow, we accumulate a few exponentially scaled versions of hex.w.
+ glow.a *= pow(hex.w, 20.0) * 10.0 +
+ pow(hex.w, 10.0) * 5.0 +
+ pow(hex.w, 2.0) * 0.5;
+
+ // Using step(LINE_WIDTH, hex.z) would be simpler, but the below creates some
+ // fake antialiasing.
+ line.a *= 1.0 - smoothstep(LINE_WIDTH*0.5, LINE_WIDTH, hex.z);
+
+ // Fade in the glowing lines.
+ glow.a *= glowProgress;
+ line.a *= glowProgress;
+
+ // Do not add the hexagon lines onto transparent parts of the window.
+ glow *= cogl_color_out.a;
+ line *= cogl_color_out.a;
+
+ if (${settings.get_boolean('hexagon-additive-blending')}) {
+ cogl_color_out.rgb += glow.rgb * glow.a;
+ cogl_color_out.rgb += line.rgb * line.a;
+ } else {
+ cogl_color_out.rgb = mix(cogl_color_out.rgb, glow.rgb, glow.a);
+ cogl_color_out.rgb = mix(cogl_color_out.rgb, line.rgb, line.a);
+ }
+ }
+ }
+ `);
+ };
+ });
+}
\ No newline at end of file