diff --git a/lib/ugui.c3l/src/cache.c3 b/lib/ugui.c3l/src/cache.c3
index 04ea3a3..5d85494 100644
--- a/lib/ugui.c3l/src/cache.c3
+++ b/lib/ugui.c3l/src/cache.c3
@@ -9,10 +9,6 @@ module cache{Key, Value, SIZE};
  * the elements that were not recently used.
  */
 
-// FIXME: this module should really allocate all resources on an arena or temp
-//        allocator, since all memory allocations are connected and freeing
-//        happens at the same time
-
 import std::core::mem;
 import std::core::mem::allocator;
 import std::collections::bitset;
@@ -79,6 +75,7 @@ fn Value*? Cache.search(&cache, Key id)
 	}
 
 	/* HIT, set as recently used */
+	//io::printfn("HIT: %d [%d]", entry.value, entry.key);
 	cache.used[entry.value] = true;
 	return &(cache.pool[entry.value]);
 }
@@ -99,16 +96,19 @@ fn void Cache.remove(&cache, Key id)
 /* If there is no free space left then just return the first position */
 fn usz Cache.get_free_spot(&cache) @private
 {
+	// TODO: in the upgrade to c3 1.7.5 use @bitsof()
 	const BITS = $typeof(cache.present.data[0]).sizeof*8;
 	foreach (idx, d: cache.present.data) {
-		if (d.clz() != BITS) {
-			return idx*BITS + BITS-d.clz();
+		if (d != $typeof(d).max) {
+			usz spot = idx*BITS + BITS-d.clz();
+			if (cache.used[spot]) unreachable("free spot is not actually free: %d", spot);
+			return spot;
 		}
 	}
 	return 0;
 }
 
-fn Value*? Cache.insert_at(&cache, Value *g, Key id, usz index) @private
+fn Value*? Cache.insert_at(&cache, Value* g, Key id, usz index) @private
 {
 	// TODO: verify index, g and id
 	Value* spot;
diff --git a/lib/ugui.c3l/src/ugui_cmd.c3 b/lib/ugui.c3l/src/ugui_cmd.c3
index a4982fc..fd99218 100644
--- a/lib/ugui.c3l/src/ugui_cmd.c3
+++ b/lib/ugui.c3l/src/ugui_cmd.c3
@@ -97,9 +97,7 @@ macro Ctx.push_cmd(&ctx, Cmd *cmd, int z_index)
 	default: return ctx.cmd_queue.enqueue(cmd);
 	}
 	if (cull_rect(rect, ctx.div_scissor)) {
-//		io::print("NOPE: ");
-//		io::print(cmd.rect.rect);
-//		io::printn(cmd.z_index);
+//		println("NOPE: ", cmd.rect.rect, cmd.z_index);
 //		unreachable();
 		return;
 	}
diff --git a/lib/ugui.c3l/src/ugui_core.c3 b/lib/ugui.c3l/src/ugui_core.c3
index 19f0a83..f23560c 100644
--- a/lib/ugui.c3l/src/ugui_core.c3
+++ b/lib/ugui.c3l/src/ugui_core.c3
@@ -165,10 +165,9 @@ macro Id @compute_id(...)
 // resets all flags except is_new which is set accordingly
 fn Elem*? Ctx.get_elem(&ctx, Id id, ElemType type)
 {
-	Elem empty_elem;
 	bool is_new;
 	Elem* elem;
-	elem = ctx.cache.get_or_insert(&empty_elem, id, &is_new)!;
+	elem = ctx.cache.get_or_insert(&&(Elem){}, id, &is_new)!;
 	elem.flags = (ElemFlags)0;
 	elem.flags.is_new = is_new;
 	elem.id = id;
diff --git a/lib/ugui.c3l/src/ugui_layout.c3 b/lib/ugui.c3l/src/ugui_layout.c3
index bae4ea7..7b23e0b 100644
--- a/lib/ugui.c3l/src/ugui_layout.c3
+++ b/lib/ugui.c3l/src/ugui_layout.c3
@@ -55,27 +55,52 @@ macro Size Layout.total_height(&el)
 // Returns the width and height of a @FIT() element based on it's wanted size (min/max)
 // and the content size, this function is used to both update the parent's children size and
 // give the dimensions of a fit element
+// TODO: test and cleanup this function
 macro Point Layout.get_dimensions(&el)
 {
-	Size content_width = el.children.w + el.text.width;
-	Size width = el.w.combine(content_width);
-	short final_width = width.greater();
-
-	short text_height;
-	if (el.text.area != 0) {
-		short text_width = (@exact(final_width) - el.children.w).combine(el.text.width).min;
-		text_height = @exact((short)(el.text.area / text_width)).combine(el.text.height).min;
+	// if the direction is ROW then the text is placed horizontally with the children
+	if (el.dir == ROW) {
+		Size content_width = el.children.w + el.text.width;
+		Size width = el.w.combine(content_width);
+		short final_width = width.greater();
+	
+		short text_height;
+		if (el.text.area != 0) {
+			short text_width = (@exact(final_width) - el.children.w).combine(el.text.width).min;
+			text_height = @exact((short)(el.text.area / text_width)).combine(el.text.height).min;
+		}
+	
+		Size content_height = el.children.h.comb_max(@exact(text_height));
+		Size height = el.h.combine(content_height);
+		short final_height = height.greater();
+	
+		Point dim = {
+			.x = final_width + el.content_offset.x + el.content_offset.w,
+			.y = final_height + el.content_offset.y + el.content_offset.h,
+		};
+		return dim;
+	} else {
+	// if the direction is COLUMN the text and children are one on top of the other
+		Size content_width = el.children.w.comb_max(el.text.width);
+		Size width = el.w.combine(content_width);
+		short final_width = width.greater();
+	
+		short text_height;
+		if (el.text.area != 0) {
+			short text_width = @exact(final_width).combine(el.text.width).min;
+			text_height = @exact((short)(el.text.area / text_width)).combine(el.text.height).min;
+		}
+	
+		Size content_height = el.children.h + @exact(text_height);
+		Size height = el.h.combine(content_height);
+		short final_height = height.greater();
+	
+		Point dim = {
+			.x = final_width + el.content_offset.x + el.content_offset.w,
+			.y = final_height + el.content_offset.y + el.content_offset.h,
+		};
+		return dim;
 	}
-
-	Size content_height = el.children.h + @exact(text_height);
-	Size height = el.h.combine(content_height);
-	short final_height = height.greater();
-
-	Point dim = {
-		.x = final_width + el.content_offset.x + el.content_offset.w,
-		.y = final_height + el.content_offset.y + el.content_offset.h,
-	};
-	return dim;
 }
 
 // The content space of the element
diff --git a/lib/ugui.c3l/src/ugui_sprite.c3 b/lib/ugui.c3l/src/ugui_sprite.c3
index edd3b8f..ab4127b 100644
--- a/lib/ugui.c3l/src/ugui_sprite.c3
+++ b/lib/ugui.c3l/src/ugui_sprite.c3
@@ -30,10 +30,6 @@ struct SpriteAtlas {
 	bool should_update;
 }
 
-struct ElemSprite {
-	Id id;
-}
-
 // name: some examples are "icons" or "images"
 fn void? SpriteAtlas.init(&this, String name, AtlasType type, ushort width, ushort height)
 {
@@ -109,47 +105,3 @@ fn void? Ctx.import_sprite_file_qoi(&ctx, String name, String path, SpriteType t
 
 	ctx.sprite_atlas.insert(name, type, pixels, (ushort)desc.width, (ushort)desc.height, (ushort)desc.width)!;
 }
-
-
-/*
-macro Ctx.sprite(&ctx, String name, Point off = {0,0}, ...)
-	=> ctx.sprite_id(@compute_id($vasplat), name, off);
-fn void? Ctx.sprite_id(&ctx, Id id, String name, Point off)
-{
-	id = ctx.gen_id(id)!;
-
-	Elem *parent = ctx.get_parent()!;
-	Elem *elem = ctx.get_elem(id, ETYPE_SPRITE)!;
-
-	Style* style = ctx.styles.get_style(@str_hash("sprite"));
-	Sprite* sprite = ctx.sprite_atlas.get(name)!;
-
-	Rect uv = { sprite.u, sprite.v, sprite.w, sprite.h };
-	Rect bounds = { 0, 0, sprite.w, sprite.h };
-
-	elem.bounds = ctx.layout_element(parent, bounds.off(off), style);
-	elem.sprite.id = ctx.get_sprite_atlas_id(name);
-
-	// if the bounds are null the element is outside the div view,
-	//  no interaction should occur so just return
-	if (elem.bounds.is_null()) return;
-
-	Id tex_id = ctx.sprite_atlas.id;
-
-	return ctx.push_sprite(elem.bounds, uv, tex_id, parent.div.z_index)!;
-}
-
-fn void? Ctx.draw_sprite_raw(&ctx, String name, Rect bounds, bool center = false)
-{
-	Elem *parent = ctx.get_parent()!;
-	Sprite* sprite = ctx.sprite_atlas.get(name)!;
-	Id tex_id = ctx.sprite_atlas.id;
-	
-	if (center) {
-		Point off = {.x = (bounds.w - sprite.w) / 2, .y = (bounds.h - sprite.h) / 2};
-		bounds = bounds.off(off);
-	}
-	
-	return ctx.push_sprite(bounds, sprite.uv(), tex_id, parent.div.z_index, type: sprite.type)!;
-}
-*/
\ No newline at end of file
diff --git a/lib/ugui.c3l/src/ugui_button.c3 b/lib/ugui.c3l/src/widgets/ugui_button.c3
similarity index 64%
rename from lib/ugui.c3l/src/ugui_button.c3
rename to lib/ugui.c3l/src/widgets/ugui_button.c3
index 00b2b5c..7c69379 100644
--- a/lib/ugui.c3l/src/ugui_button.c3
+++ b/lib/ugui.c3l/src/widgets/ugui_button.c3
@@ -18,9 +18,6 @@ fn ElemEvents? Ctx.button_id(&ctx, Id id, String label, String icon)
 	Style* style = ctx.styles.get_style(@str_hash("button"));
 	
 	Sprite* sprite = icon != "" ? ctx.sprite_atlas.get(icon)! : &&(Sprite){};
-
-	// TODO: get min size by style
-	TextSize text_size = ctx.measure_string(label)!;
 	Rect icon_size = sprite.rect();
 	
 	ushort min_size = style.size; 
@@ -44,7 +41,7 @@ fn ElemEvents? Ctx.button_id(&ctx, Id id, String label, String icon)
 	elem.layout.h = @fit(min_size);
 	elem.layout.children.w = @exact(content_size.x);
 	elem.layout.children.h = @exact(content_size.y);
-	elem.layout.text = text_size;
+	elem.layout.text = ctx.measure_string(label)!;
 	elem.layout.content_offset = style.margin + style.border + style.padding;
 
 	update_parent_grow(elem, parent);
@@ -86,47 +83,82 @@ fn ElemEvents? Ctx.button_id(&ctx, Id id, String label, String icon)
 	return elem.events;
 }
 
-/*
 
-// FIXME: this should be inside the style
-macro Ctx.checkbox(&ctx, String desc, Point off, bool* active, String tick_sprite = {}, ...)
-	=> ctx.checkbox_id(@compute_id($vasplat), desc, off, active, tick_sprite);
-fn void? Ctx.checkbox_id(&ctx, Id id, String description, Point off, bool* active, String tick_sprite)
+macro Ctx.checkbox(&ctx, String desc, bool* active, String tick_sprite = "", ...)
+	=> ctx.checkbox_id(@compute_id($vasplat), desc, active, tick_sprite);
+fn void? Ctx.checkbox_id(&ctx, Id id, String description, bool* active, String tick_sprite)
 {
 	id = ctx.gen_id(id)!;
-
 	Elem *parent = ctx.get_parent()!;
 	Elem *elem = ctx.get_elem(id, ETYPE_BUTTON)!;
 	Style* style = ctx.styles.get_style(@str_hash("checkbox"));
 
-	Rect size = {off.x, off.y, style.size, style.size};
-	elem.bounds = ctx.layout_element(parent, size, style);
+	short inner_pad = description != "" ? style.size/2 : 0;
+	/*
+	 *                       |< >| style.size/2
+	 * +---------------------|---|-----------+
+	 * |                     |    .-----. ---|--
+	 * |   +-----------------+   '  ###  '   | ^
+	 * |   |   description   |   | ##### |   | style.size
+	 * |   +-----------------+   .  ###  .   | v
+	 * |                          '-----' ---|--
+	 * +-------------------------|-------|---+
+	 *                           |<----->| style.size
+	 */
+	
+	elem.layout.w = @fit(style.size);
+	elem.layout.h = @fit(style.size);
+	elem.layout.children.w = @exact(style.size + inner_pad);
+	elem.layout.children.h = @exact(style.size);
+	elem.layout.text = ctx.measure_string(description)!;
+	elem.layout.content_offset = style.margin + style.border + style.padding;
 
-	// if the bounds are null the element is outside the div view,
-	//  no interaction should occur so just return
-	if (elem.bounds.is_null()) return;
+	update_parent_grow(elem, parent);
+	update_parent_size(elem, parent);
 
 	elem.events = ctx.get_elem_events(elem);
 	if (elem.events.mouse_hover && elem.events.mouse_release) *active = !(*active);
+
+
+	Rect content_bounds = elem.bounds.pad(elem.layout.content_offset);
+	Rect text_bounds = {
+		.x = content_bounds.x,
+		.y = content_bounds.y,
+		.w = content_bounds.w - inner_pad - style.size,
+		.h = content_bounds.h
+	};
+	Rect check_bounds = {
+		.x = content_bounds.x + text_bounds.w + inner_pad,
+		.y = content_bounds.y + (content_bounds.h - style.size)/2,
+		.w = style.size,
+		.h = style.size,
+	};
+
+	Style s;
+	s.bg = style.bg;
+	s.secondary = style.secondary;
+	s.border = style.border;
+	s.radius = style.radius;
 	
-	if (tick_sprite != {}) {
-		ctx.push_rect(elem.bounds, parent.div.z_index, style)!;
+	ctx.layout_string(description, text_bounds, CENTER, parent.div.z_index, style.fg)!;
+	if (tick_sprite != "") {
+		ctx.push_rect(check_bounds, parent.div.z_index, &s)!;
 		if (*active) {
-			ctx.draw_sprite_raw(tick_sprite, elem.bounds, center: true)!;
+			Sprite* sprite = ctx.sprite_atlas.get(tick_sprite)!;
+			Id tex_id = ctx.sprite_atlas.id;
+			ctx.push_sprite(sprite.rect().center_to(check_bounds), sprite.uv(), tex_id, parent.div.z_index, type: sprite.type)!;
 		}
 	} else {
-		ctx.push_rect(elem.bounds, parent.div.z_index, style)!;
 		if (*active) {
-			ushort x = style.size / 4;
-			Rect check = elem.bounds.add({x, x, -x*2, -x*2});
-			Style s = *style;
-			s.bg = s.primary;
-			s.margin = s.border = s.padding = {};
-			ctx.push_rect(check, parent.div.z_index, &s)!;
+			s.bg = style.primary;
+			ctx.push_rect(check_bounds, parent.div.z_index, &s)!;
+		} else {
+			ctx.push_rect(check_bounds, parent.div.z_index, &s)!;
 		}
 	}
 }
 
+/*
 // FIXME: this should be inside the style
 macro Ctx.toggle(&ctx, String desc, Point off, bool* active)
 	=> ctx.toggle_id(@compute_id($vasplat), desc, off, active);
@@ -156,5 +188,4 @@ fn void? Ctx.toggle_id(&ctx, Id id, String description, Point off, bool* active)
 	s.bg = s.primary;
 	s.margin = s.border = s.padding = {};
 	ctx.push_rect(t, parent.div.z_index, &s)!;
-}
-*/
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/lib/ugui.c3l/src/ugui_div.c3 b/lib/ugui.c3l/src/widgets/ugui_div.c3
similarity index 98%
rename from lib/ugui.c3l/src/ugui_div.c3
rename to lib/ugui.c3l/src/widgets/ugui_div.c3
index a53cd0c..c5667d2 100644
--- a/lib/ugui.c3l/src/ugui_div.c3
+++ b/lib/ugui.c3l/src/widgets/ugui_div.c3
@@ -161,7 +161,7 @@ fn void? Ctx.div_end(&ctx)
 	ctx.active_div = ctx.tree.parentof(ctx.active_div)!;
 	Elem* parent = ctx.get_parent()!;
 	ctx.div_scissor = parent.bounds;
-	ctx.push_scissor(parent.bounds, elem.div.z_index)!;
+	ctx.reset_scissor(elem.div.z_index)!;
 
 	update_parent_size(elem, parent);
 }
diff --git a/lib/ugui.c3l/src/ugui_slider.c3 b/lib/ugui.c3l/src/widgets/ugui_slider.c3
similarity index 100%
rename from lib/ugui.c3l/src/ugui_slider.c3
rename to lib/ugui.c3l/src/widgets/ugui_slider.c3
diff --git a/lib/ugui.c3l/src/widgets/ugui_sprite.c3 b/lib/ugui.c3l/src/widgets/ugui_sprite.c3
new file mode 100644
index 0000000..f0c8661
--- /dev/null
+++ b/lib/ugui.c3l/src/widgets/ugui_sprite.c3
@@ -0,0 +1,27 @@
+module ugui;
+
+struct ElemSprite {
+	Id id;
+}
+
+macro Ctx.sprite(&ctx, String name, ...)
+	=> ctx.sprite_id(@compute_id($vasplat), name);
+fn void? Ctx.sprite_id(&ctx, Id id, String name)
+{
+	id = ctx.gen_id(id)!;
+	Elem *parent = ctx.get_parent()!;
+	Elem *elem = ctx.get_elem(id, ETYPE_SPRITE)!;
+
+	Style* style = ctx.styles.get_style(@str_hash("sprite"));
+	Sprite* sprite = ctx.sprite_atlas.get(name)!;
+	elem.sprite.id = ctx.get_sprite_atlas_id(name);
+
+	elem.layout.w = elem.layout.children.w = @exact(sprite.w);
+	elem.layout.h = elem.layout.children.h = @exact(sprite.h);
+
+	update_parent_grow(elem, parent);
+	update_parent_size(elem, parent);
+
+	Id tex_id = ctx.sprite_atlas.id;
+	return ctx.push_sprite(elem.bounds, sprite.uv(), tex_id, parent.div.z_index, type: sprite.type)!;
+}
diff --git a/lib/ugui.c3l/src/ugui_text.c3 b/lib/ugui.c3l/src/widgets/ugui_text.c3
similarity index 100%
rename from lib/ugui.c3l/src/ugui_text.c3
rename to lib/ugui.c3l/src/widgets/ugui_text.c3
diff --git a/resources/style.css b/resources/style.css
index 4564354..37f17fc 100644
--- a/resources/style.css
+++ b/resources/style.css
@@ -28,7 +28,7 @@ checkbox {
 	border: 2;
 	padding: 1;
 	radius: 10;
-	size: 16;
+	size: 20;
 	bg: #3c3836ff;
 	fg: #fbf1c7ff;
 	primary: #cc241dff;
diff --git a/src/main.c3 b/src/main.c3
index f92778e..3d497e2 100644
--- a/src/main.c3
+++ b/src/main.c3
@@ -360,7 +360,7 @@ fn void calculator(ugui::Ctx* ui)
 	case "c":
 		len = 0;
 	case "d":
-		len--;
+		if (len > 0) len--;
 	}
 
 	// ui input/output
@@ -389,9 +389,7 @@ fn void calculator(ugui::Ctx* ui)
 				ui.button("3")!!.mouse_press ? buffer[len++] = '3' : 0;
 				ui.button("(")!!.mouse_press ? buffer[len++] = '(' : 0;
 			}!!;
-	
 			ui.@div(ugui::@exact(10), ugui::@exact(10)) {}!!;
-			
 			ui.@div(ugui::@fit(), ugui::@fit(), COLUMN) {
 				ui.button("x")!!.mouse_press ? buffer[len++] = '*' : 0;
 				ui.button("/")!!.mouse_press ? buffer[len++] = '/' : 0;
@@ -400,7 +398,7 @@ fn void calculator(ugui::Ctx* ui)
 			}!!;
 			ui.@div(ugui::@fit(), ugui::@fit(), COLUMN) {
 				ui.button("C")!!.mouse_press ? len = 0 : 0;
-				ui.button("D")!!.mouse_press ? len-- : 0;
+				ui.button("D")!!.mouse_press ? len > 0 ? len-- : 0 : 0;
 				ui.button("-")!!.mouse_press ? buffer[len++] = '-' : 0;
 				
 				// eval the expression with 'bc'
@@ -413,5 +411,12 @@ fn void calculator(ugui::Ctx* ui)
 				}
 			}!!;
 		}!!;
+		
+		ui.@div(ugui::@grow(), ugui::@grow(), anchor: CENTER) {		
+			static bool state;
+			ui.checkbox("boolean", &state, "tick")!!;
+			ui.sprite("tux")!!;
+		}!!;
+
 	}!!; }!!;
 }