From 4ebb8aea3aad7c0e5bc0b70ec96e547b3c7c7bc9 Mon Sep 17 00:00:00 2001
From: Tom Beckmann <tomjonabc@gmail.com>
Date: Sun, 14 Jul 2013 14:13:31 +0200
Subject: [PATCH 1/2] windowswitcher: add option to configure fade opacity

---
 data/org.pantheon.desktop.gala.gschema.xml | 4 ++++
 src/Settings.vala                          | 1 +
 src/Widgets/WindowSwitcher.vala            | 3 ++-
 3 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/data/org.pantheon.desktop.gala.gschema.xml b/data/org.pantheon.desktop.gala.gschema.xml
index 6b3f9901..d3572276 100644
--- a/data/org.pantheon.desktop.gala.gschema.xml
+++ b/data/org.pantheon.desktop.gala.gschema.xml
@@ -143,6 +143,10 @@
 			<default>false</default>
 			<summary>Make parent windows that spawn a modal attached dialog being dimmed</summary>
 		</key>
+		<key type="f" name="alt-tab-window-opacity">
+			<default>0.0</default>
+			<summary>The opacity of the windows located in the background in the alt-tab-switcher.</summary>
+		</key>
 	</schema>
 	
 	<schema path="/org/pantheon/desktop/gala/animations/" id="org.pantheon.desktop.gala.animations" gettext-domain="gala">
diff --git a/src/Settings.vala b/src/Settings.vala
index 44a17711..62888e86 100644
--- a/src/Settings.vala
+++ b/src/Settings.vala
@@ -73,6 +73,7 @@ namespace Gala
 		public string button_layout { get; set; }
 		public bool attach_modal_dialogs { get; set; }
 		public bool dim_parents { get; set; }
+		public double alt_tab_window_opacity { get; set; }
 		
 		static AppearanceSettings? instance = null;
 		
diff --git a/src/Widgets/WindowSwitcher.vala b/src/Widgets/WindowSwitcher.vala
index fdf6f3fd..d06824bc 100644
--- a/src/Widgets/WindowSwitcher.vala
+++ b/src/Widgets/WindowSwitcher.vala
@@ -269,6 +269,7 @@ namespace Gala
 		{
 			var current_actor = current_window.get_compositor_private () as Actor;
 			var i = 0;
+			var window_opacity = (int)Math.floor (AppearanceSettings.get_default ().alt_tab_window_opacity * 255);
 			foreach (var clone in window_clones) {
 				if (current_actor == clone.source) {
 					set_child_below_sibling (clone, dock_background);
@@ -276,7 +277,7 @@ namespace Gala
 					
 					dock.get_child_at_index (i).animate (AnimationMode.LINEAR, 100, opacity : 255);
 				} else {
-					clone.animate (Clutter.AnimationMode.EASE_OUT_QUAD, 250, depth : -200.0f, opacity : 0);
+					clone.animate (Clutter.AnimationMode.EASE_OUT_QUAD, 250, depth : -200.0f, opacity : window_opacity);
 					dock.get_child_at_index (i).animate (AnimationMode.LINEAR, 100, opacity : 100);
 				}
 				

From 2bce60c74cfc797080868aa66bbe50bc81a0b462 Mon Sep 17 00:00:00 2001
From: Tom Beckmann <tomjonabc@gmail.com>
Date: Sun, 14 Jul 2013 14:19:20 +0200
Subject: [PATCH 2/2] limit range of opacity

---
 data/org.pantheon.desktop.gala.gschema.xml | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/data/org.pantheon.desktop.gala.gschema.xml b/data/org.pantheon.desktop.gala.gschema.xml
index d3572276..e5859e26 100644
--- a/data/org.pantheon.desktop.gala.gschema.xml
+++ b/data/org.pantheon.desktop.gala.gschema.xml
@@ -143,7 +143,8 @@
 			<default>false</default>
 			<summary>Make parent windows that spawn a modal attached dialog being dimmed</summary>
 		</key>
-		<key type="f" name="alt-tab-window-opacity">
+		<key type="d" name="alt-tab-window-opacity">
+			<range min="0.0" max="1.0"/>
 			<default>0.0</default>
 			<summary>The opacity of the windows located in the background in the alt-tab-switcher.</summary>
 		</key>