From b0551cddd6ab569d3ef743946b7a6720ae8bc9e7 Mon Sep 17 00:00:00 2001
From: Tilman Sauerbeck <tilman@code-monkey.de>
Date: Sun, 24 Sep 2006 17:30:54 +0200
Subject: [PATCH] Fade out icons before removing them.

---
 bin/embrace | 67 ++++++++++++++++++++++++++++++++++++++++++++---------
 1 file changed, 56 insertions(+), 11 deletions(-)

diff --git a/bin/embrace b/bin/embrace
index eae0994..f7ae62b 100755
--- a/bin/embrace
+++ b/bin/embrace
@@ -83,9 +83,20 @@ module Embrace
 	class AlphaAnimator < ZeroToOneAnimator
 		def initialize(duration, *objects)
 			super(duration) do |v|
-				objects.each { |o| o.alpha = (255 * v).to_i }
+				a = compute_alpha(v)
+				objects.each { |o| o.alpha = a }
 			end
 		end
+
+		def compute_alpha(v)
+			(255 * v).to_i
+		end
+	end
+
+	class InverseAlphaAnimator < AlphaAnimator
+		def compute_alpha(v)
+			super((1.0 - v).abs)
+		end
 	end
 
 	class MoveAnimator < ZeroToOneAnimator
@@ -105,6 +116,16 @@ module Embrace
 	end
 
 	class MailboxIcon < Evas::Smart
+		class FadeOutFinishedEvent < Ecore::Event
+			attr_reader :icon
+
+			def initialize(icon)
+				super()
+
+				@icon = icon
+			end
+		end
+
 		attr_accessor :slot
 
 		def initialize(evas, label)
@@ -134,14 +155,26 @@ module Embrace
 			resize(*@img.get_size)
 		end
 
-		# smart callbacks
-		def smart_show
-			@objects.each { |o| o.show }
+		def fade_in
+			show
 
 			@alpha_anim ||= AlphaAnimator.new(2, self)
 			@alpha_anim.on_finished { @alpha_anim = nil }
 		end
 
+		def fade_out
+			@alpha_anim ||= InverseAlphaAnimator.new(2, self)
+			@alpha_anim.on_finished do
+				@alpha_anim = nil
+				FadeOutFinishedEvent.raise(self)
+			end
+		end
+
+		# smart callbacks
+		def smart_show
+			@objects.each { |o| o.show }
+		end
+
 		def smart_hide
 			@objects.each { |o| o.hide }
 
@@ -191,6 +224,11 @@ module Embrace
 
 			@about_to_add = 0
 			@add_lock_count = 0
+
+			@handlers = [
+				Ecore::EventHandler.new(MailboxIcon::FadeOutFinishedEvent,
+				                        &method(:on_icon_fade_out_finished))
+			]
 		end
 
 		def can_add?
@@ -208,7 +246,7 @@ module Embrace
 			i.move_relative(self, 0, 0)
 			i.slot = next_slot
 			i.clip = self
-			i.show
+			i.fade_in
 
 			# check whether we need to need to move this icon
 			if slots_left == 1
@@ -242,16 +280,23 @@ module Embrace
 			Kernel.raise(ContainerLockedError) unless @about_to_add.zero?
 			Kernel.raise(ContainerLockedError) unless @add_lock_count.zero?
 
-			# icons that are placed above the one that's deleted need
-			# to be moved
-			ar = @icons[(i + 1)..-1]
+			@add_lock_count += 1
+			@icons[i].fade_out
+		end
 
-			@icons[i].delete
+		def on_icon_fade_out_finished(ev)
+			i = @icons.index(ev.icon)
+			ev.icon.delete
 			@icons.delete_at(i)
 
-			return if ar.empty?
+			# icons that are placed above the one that's deleted need
+			# to be moved. check whether are there any first
+			if i == @icons.length
+				@add_lock_count -= 1
+				return
+			end
 
-			@add_lock_count += 1
+			ar = @icons[i..-1]
 
 			@animators << MoveAnimator.new(2, Main.instance.icon_height, *ar)
 			@animators.last.on_finished do |ani|
-- 
2.30.2