🔧 Make animation type configurable

extension.js

@@ -131,17 +131,27 @@ class Extension {
       tweakTransition('scale-x', 1);
       tweakTransition('scale-y', 1);
 
-      // Instead, we add a cool shader to our window actor!
-      const shader = new MatrixShader(this._settings);
-      actor.add_effect(shader);
+      let shader = null;
 
-      // Update uniforms at each frame.
-      transition.connect('new-frame', (t) => {
-        shader.set_uniform_value('uProgress', t.get_progress());
-        shader.set_uniform_value('uTime', 0.001 * t.get_elapsed_time());
-        shader.set_uniform_value('uSizeX', actor.width);
-        shader.set_uniform_value('uSizeY', actor.height);
-      });
+      // Add a cool shader to our window actor!
+      const mode = this._settings.get_enum('close-animation');
+      if (mode == 1) {
+        shader = new FireShader(this._settings);
+      } else if (mode == 2) {
+        shader = new MatrixShader(this._settings);
+      }
+
+      if (shader) {
+        actor.add_effect(shader);
+
+        // Update uniforms at each frame.
+        transition.connect('new-frame', (t) => {
+          shader.set_uniform_value('uProgress', t.get_progress());
+          shader.set_uniform_value('uTime', 0.001 * t.get_elapsed_time());
+          shader.set_uniform_value('uSizeX', actor.width);
+          shader.set_uniform_value('uSizeY', actor.height);
+        });
+      }
     });
   }
 

prefs.js

@@ -44,6 +44,7 @@ var PreferencesDialog = class PreferencesDialog {
 
     // Bind all properties.
     this._bindAdjustment('destroy-animation-time');
+    this._bindCombobox('close-animation');
     this._bindAdjustment('flame-movement-speed');
     this._bindAdjustment('flame-scale');
     this._bindColorButton('fire-color-1');
@@ -90,6 +91,12 @@ var PreferencesDialog = class PreferencesDialog {
 
   // ----------------------------------------------------------------------- private stuff
 
+  // Connects a Gtk.ComboBox (or anything else which has an 'active-id' property) to a
+  // settings key. It also binds the corresponding reset button.
+  _bindCombobox(settingsKey) {
+    this._bind(settingsKey, 'active-id');
+  }
+
   // Connects a Gtk.Adjustment (or anything else which has a 'value' property) to a
   // settings key. It also binds the corresponding reset button.
   _bindAdjustment(settingsKey) {

resources/ui/gtk4.ui

@@ -2,6 +2,23 @@
 <interface domain="desktop-cube">
   <requires lib="gtk" version="4.0" />
 
+  <object class="GtkListStore" id="animation-mode-list">
+    <columns>
+      <column type="gchararray" />
+      <column type="gchararray" />
+    </columns>
+    <data>
+      <row>
+        <col id="0">Fire</col>
+        <col id="1">fire</col>
+      </row>
+      <row>
+        <col id="0">Matrix</col>
+        <col id="1">matrix</col>
+      </row>
+    </data>
+  </object>
+
   <object class="GtkScrolledWindow" id="settings-widget">
     <property name="hscrollbar-policy">never</property>
     <property name="min-content-height">200</property>
@@ -42,6 +59,48 @@
                     </style>
 
 
+                    <child>
+                      <object class="GtkListBoxRow">
+                        <property name="activatable">0</property>
+                        <child>
+                          <object class="GtkBox">
+                            <child>
+                              <object class="GtkLabel">
+                                <property name="label" translatable="yes">Close Window Animation</property>
+                                <property name="xalign">0</property>
+                                <property name="halign">start</property>
+                                <property name="valign">center</property>
+                                <property name="hexpand">1</property>
+                              </object>
+                            </child>
+                            <child>
+                              <object class="GtkComboBox" id="close-animation">
+                                <property name="valign">center</property>
+                                <property name="model">animation-mode-list</property>
+                                <property name="id_column">1</property>
+                                <property name="active_id">fire</property>
+                                <child>
+                                  <object class="GtkCellRendererText" />
+                                  <attributes>
+                                    <attribute name="text">0</attribute>
+                                  </attributes>
+                                </child>
+                              </object>
+                            </child>
+                            <child>
+                              <object class="GtkButton" id="reset-close-animation">
+                                <property name="icon-name">edit-clear-symbolic</property>
+                                <property name="tooltip-text">Reset to Default Value</property>
+                                <style>
+                                  <class name="flat" />
+                                </style>
+                              </object>
+                            </child>
+                          </object>
+                        </child>
+                      </object>
+                    </child>
+
                     <child>
                       <object class="GtkListBoxRow">
                         <property name="activatable">0</property>

schemas/org.gnome.shell.extensions.burn-my-windows.gschema.xml

@@ -1,8 +1,20 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <schemalist>
 
+  <enum id='org.gnome.shell.extensions.burn-my-windows.AnimationType'>
+    <value value='1' nick='fire' />
+    <value value='2' nick='matrix' />
+  </enum>
+
   <schema path="/org/gnome/shell/extensions/burn-my-windows/" id="org.gnome.shell.extensions.burn-my-windows">
 
+    <key name="close-animation" enum="org.gnome.shell.extensions.burn-my-windows.AnimationType">
+      <default>"fire"</default>
+      <summary>Close Animation</summary>
+      <description>The animation used for window closing.</description>
+    </key>
+
+
     <key name="destroy-animation-time" type="i">
       <default>2000</default>
       <summary>Destroy Animation Time</summary>

src/extension/MatrixShader.js

@@ -51,14 +51,14 @@ var MatrixShader = GObject.registerClass({Properties: {}, Signals: {}},
       uniform sampler2D uFontTexture;
 
       // These may be configurable in the future.
-      const float EDGE_FADE  = 30;
-      const float FADE_WIDTH = 150;
-      const float TRAIL_LENGTH  = 0.2;
-      const float FINAL_FADE_START_TIME  = 0.8;
-      const float LETTER_TILES  = 16.0;
-      const float LETTER_SIZE  = ${settings.get_int('matrix-scale')};
+      const float EDGE_FADE             = 30;
+      const float FADE_WIDTH            = 150;
+      const float TRAIL_LENGTH          = 0.2;
+      const float FINAL_FADE_START_TIME = 0.8;
+      const float LETTER_TILES          = 16.0;
+      const float LETTER_SIZE           = ${settings.get_int('matrix-scale')};
       const float LETTER_FLICKER_SPEED  = 2.0;
-      const float RANDOMNESS  = ${settings.get_double('matrix-randomness')};
+      const float RANDOMNESS            = ${settings.get_double('matrix-randomness')};
 
       // This returns a flickering grid of random letters.
       float getText(vec2 fragCoord) {
@@ -117,7 +117,7 @@ var MatrixShader = GObject.registerClass({Properties: {}, Signals: {}},
         vec3 tipColor =   vec3(${tipColor.red / 255}, 
                                ${tipColor.green / 255}, 
                                ${tipColor.blue / 255});
-        cogl_color_out.rgb += mix(trailColor, tipColor, pow(rainAlpha, 5)) * rainAlpha * text;
+        cogl_color_out.rgb += mix(trailColor, tipColor, min(1, pow(rainAlpha+0.1, 4))) * rainAlpha * text;
 
         // These are pretty useful for understanding how this works.
         // cogl_color_out = vec4(vec3(text), 1);
@@ -127,6 +127,7 @@ var MatrixShader = GObject.registerClass({Properties: {}, Signals: {}},
     `);
   };
 
+  // This is overridden to bind the font texture for drawing.
   vfunc_paint_target(node, paint_context) {
     const pipeline = this.get_pipeline();
     pipeline.set_layer_texture(1, this._fontTexture.get_texture());