diff --git a/assets/gui.frag.spv b/assets/gui.frag.spv
index 7e9ac86..8da6167 100644
Binary files a/assets/gui.frag.spv and b/assets/gui.frag.spv differ
diff --git a/src/editor/editor.d b/src/editor/editor.d
index b651eb4..fe02df6 100644
--- a/src/editor/editor.d
+++ b/src/editor/editor.d
@@ -188,11 +188,21 @@ Cycle(Editor* ed, Inputs* inputs)
 	*/
 
 	u32 count = 0;
+	static bool init = false;
+	static Timer timer; 
 	static u32 box_count = 1;
+
+	if (!init)
+	{
+		timer = CreateTimer();
+		init = true;
+	}
+
+	u32 prev_box_count = box_count;
+	f32 delta = DeltaTime(&timer);
 	for(auto ev = inputs.list.first; ev != null; ev = ev.next)
 	{
 		count += 1;
-		Logf("%s", ev.value.key);
 		switch(ev.value.key)
 		{
 			case KBI.One: box_count = 1; break;
@@ -208,13 +218,104 @@ Cycle(Editor* ed, Inputs* inputs)
 		}
 	}
 
+	static UIPanel* panel = null;
+	if (panel == null)
+	{
+		panel = Alloc!(UIPanel);
+
+		panel.split_axis = A2D.X;
+		panel.percent = 1.0;
+		panel.first = panel.last = Alloc!(UIPanel);
+
+		panel.first.percent = 1.0;
+
+		UIPanel* child = panel.first;
+		foreach(i; 0 .. 8)
+		{
+			UIPanel* p = Alloc!(UIPanel);
+
+			child.next = p;
+			panel.last = p;
+			child = p;
+		}
+	}
+
 	char[128] buf = 0;
 	f32 x_pct = 1.0/box_count;
+
+	if (box_count > prev_box_count)
+	{
+		u32 added = box_count - prev_box_count;
+		f32 insert_size = 0.0;
+		UIPanel* child = panel.first;
+		foreach(i; 0 .. prev_box_count)
+		{
+			child.anim.start = child.percent;
+			child.anim.end = x_pct;
+			child.anim.time_start = 0.2;
+			child.anim.time_remaining = 0.2;
+			
+			child = child.next;
+		}
+
+		foreach(i; 0 .. box_count-prev_box_count)
+		{
+			child.anim.start = insert_size;
+			child.anim.end = x_pct;
+			child.anim.time_start = 0.2;
+			child.anim.time_remaining = 0.2;
+			child.percent = insert_size;
+
+			child = child.next;
+		}
+	}
+	else if (box_count < prev_box_count)
+	{
+		UIPanel* child = panel.first;
+		foreach(i; 0 .. box_count)
+		{
+			child.anim.start = child.percent;
+			child.anim.end = x_pct;
+			child.anim.time_start = 0.2;
+			child.anim.time_remaining = 0.2;
+
+			child = child.next;
+		}
+	}
+	else
+	{
+		UIPanel* child = panel.first;
+		foreach(i; 0 .. box_count)
+		{
+			if (child.anim.time_remaining == 0.0) break;
+
+			f32 r = child.anim.time_remaining;
+
+			r -= delta;
+			if (r < 0.0)
+			{
+				r = 0.0;
+			}
+
+			f32 t = Remap(r, 0.0, child.anim.time_start, 1.0, 0.0);
+			child.percent = Mix(child.anim.start, child.anim.end, t);
+
+			child.anim.time_remaining = r;
+			if (r == 0.0)
+			{
+				child.anim.start = child.anim.end = child.anim.time_start = 0.0;
+			}
+
+			child = child.next;
+		}
+	}
+
+	UIPanel* child = panel.first;
 	foreach(i; 0 .. box_count)
 	{
 		buf.sformat("##%s", i);
-		Logf("%r %s %s %f", buf, i, box_count, x_pct);
-		WindowItem(cast(u8[])buf, x_pct, 1.0, Vec4(Vec3(x_pct * i), 1.0));
+		DrawPanel(cast(u8[])buf, Vec4(Vec3(x_pct * i), 1.0), child);
+		child = child.next;
 	}
 
 	BeginFrame(&ed.rd);
diff --git a/src/editor/ui.d b/src/editor/ui.d
index 65dbb5e..db89413 100644
--- a/src/editor/ui.d
+++ b/src/editor/ui.d
@@ -164,6 +164,8 @@ struct UIItem
 	Rect            rect;
 	f32             text_scale;
 	Axis2D          layout_axis;
+	f32             hot_t;
+	f32             active_t;
 }
 
 struct UIKey
diff --git a/src/editor/widgets.d b/src/editor/widgets.d
index 17397fa..e5ea738 100644
--- a/src/editor/widgets.d
+++ b/src/editor/widgets.d
@@ -2,9 +2,25 @@ import dlib;
 
 import ui;
 
-struct Window
+struct WidgetAnimation
 {
-	
+	f32 start; 
+	f32 end;
+	f32 time_start;
+	f32 time_remaining;
+}
+
+struct UIPanel
+{
+	Axis2D split_axis;
+	f32    percent;
+
+	UIPanel* first;
+	UIPanel* last;
+	UIPanel* next;
+	u32      count;
+
+	WidgetAnimation anim;
 }
 
 UIItem*
@@ -25,10 +41,13 @@ RootItem()
 }
 
 UIItem*
-WindowItem(u8[] str, f32 x_pct, f32 y_pct, Vec4 col)
+DrawPanel(u8[] str, Vec4 col, UIPanel* panel)
 {
 	UIKey key = MakeKey(str);
 
+	f32 x_pct = panel.split_axis == A2D.X ? panel.percent : 1.0;
+	f32 y_pct = panel.split_axis == A2D.Y ? panel.percent : 1.0;
+
 	SetProp!(CtxP.AxisX)(UISize(SK.PercentOfParent, x_pct));
 	SetProp!(CtxP.AxisY)(UISize(SK.PercentOfParent, y_pct));
 	SetProp!(CtxP.BGColor)(col);
diff --git a/src/shaders/gui.frag.glsl b/src/shaders/gui.frag.glsl
index 0154884..20399b1 100644
--- a/src/shaders/gui.frag.glsl
+++ b/src/shaders/gui.frag.glsl
@@ -78,7 +78,7 @@ void main()
 		//tex_color = pow(tex_color, gamma);
 	}
 
-	vec4 color = FD.color;
+	vec4 color = ToLinear(FD.color);
 	vec4 out_color = color * tex_color * sdf_factor * border_factor;
 
 	FragColor = out_color;