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🔨 Initial attempt on window-opening animation

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This commit is contained in:
Simon Schneegans
2022-01-27 05:07:30 +01:00
parent b6cb78330d
commit 6b218d049f
10 changed files with 405 additions and 267 deletions
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src/BrokenGlass.js
+20 -13
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@@ -79,17 +79,21 @@ var BrokenGlass = class BrokenGlass {
// ---------------------------------------------------------------- API for extension.js
// This is called from extension.js whenever a window is closed with this effect.
static createShader(actor, settings) {
return new Shader(actor, settings);
static createShader(actor, settings, forOpening) {
return new Shader(actor, settings, forOpening);
}
// This is also called from extension.js. It is used to tweak the ongoing transition of
// the actor - usually windows are faded to transparency and scaled down slightly by
// GNOME Shell. For this effect, windows are set to twice their original size, so that
// This is also called from extension.js. It is used to tweak a window's open / close
// transitions - usually windows are faded in / out and scaled up / down by GNOME Shell.
// 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. This also
// determines how the uProgress uniform value will progress in the shader.
// For this effect, windows are set to twice their original size, so that
// we have some space to draw the shards. We also set the animation mode to "Linear".
static getCloseTransition(actor, settings) {
static tweakTransition(actor, settings, forOpening) {
return {
'opacity': {to: 255, mode: 1},
'opacity': {from: 255, to: 255, mode: 1},
'scale-x': {from: 2.0, to: 2.0, mode: 1},
'scale-y': {from: 2.0, to: 2.0, mode: 1}
};
@@ -118,7 +122,7 @@ if (utils.isInShellProcess()) {
// resources/img/shards.png. The red channel of the texture contains the distance to the
// shard edges. This information is used to fade out the shards.
Shader = GObject.registerClass({}, class Shader extends Clutter.ShaderEffect {
_init(actor, settings) {
_init(actor, settings, forOpening) {
super._init({shader_type: Clutter.ShaderType.FRAGMENT_SHADER});
// Load the shards texture. As the shader is re-created for each window animation,
@@ -151,16 +155,19 @@ if (utils.isInShellProcess()) {
const vec2 SEED = vec2(${Math.random()}, ${Math.random()});
const float SHARD_SCALE = ${settings.get_double('broken-glass-scale')};
const float SHARD_LAYERS = 5;
const float GRAVITY = ${settings.get_double('broken-glass-gravity')};
const float BLOW_FORCE = ${settings.get_double('broken-glass-blow-force')};
const float ACTOR_SCALE = 2.0;
const float PADDING = ACTOR_SCALE / 2.0 - 0.5;
const vec2 EPICENTER = vec2(${epicenterX}, ${epicenterY});
const float GRAVITY = ${forOpening ? '-1.0' : '1.0'} *
${settings.get_double('broken-glass-gravity')};
void main() {
cogl_color_out = vec4(0, 0, 0, 0);
float progress = ${forOpening ? '1.0-uProgress' : 'uProgress'};
// Draw the individual shard layers.
for (float i=0; i<SHARD_LAYERS; ++i) {
@@ -173,15 +180,15 @@ if (utils.isInShellProcess()) {
coords -= EPICENTER;
// Scale each layer a bit differently.
coords /= mix(1.0, 1.0 + BLOW_FORCE*(i+2)/SHARD_LAYERS, uProgress);
coords /= mix(1.0, 1.0 + BLOW_FORCE*(i+2)/SHARD_LAYERS, progress);
// Rotate each layer a bit differently.
float rotation = (mod(i, 2.0)-0.5)*0.2*uProgress;
float rotation = (mod(i, 2.0)-0.5)*0.2*progress;
coords = vec2(coords.x * cos(rotation) - coords.y * sin(rotation),
coords.x * sin(rotation) + coords.y * cos(rotation));
// Move down each layer a bit.
float gravity = GRAVITY*0.1*(i+1)*uProgress*uProgress;
float gravity = GRAVITY*0.1*(i+1)*progress*progress;
coords += vec2(0, gravity);
// Restore correct position.
@@ -200,7 +207,7 @@ if (utils.isInShellProcess()) {
vec4 windowColor = texture2D(uTexture, coords);
// Dissolve the shard by using distance information from the red channel.
float dissolve = (shardMap.x - pow(uProgress+0.1, 2)) > 0 ? 1: 0;
float dissolve = (shardMap.x - pow(progress+0.1, 2)) > 0 ? 1: 0;
cogl_color_out = mix(cogl_color_out, windowColor, dissolve);
}
}