aseprite/data/widgets/tools_configuration.xml

<!-- ASE - Allegro Sprite Editor -->
<!-- Copyright (C) 2001-2011 by David Capello -->
<jinete>
<window text="Tools Configuration" name="configure_tool">
  <box vertical="true" childspacing="0">
    <box horizontal="true" expansive="true">
      <box vertical="true" childspacing="2">
	<box horizontal="true" childspacing="0">
            <check text="Tiled" name="tiled" />
            <check text="x" name="tiled_x" />
            <check text="y" name="tiled_y" />
	</box>
	<check text="Onionskin" name="onionskin" />
        <separator text="Grid:" horizontal="true" left="true" />
        <check text="Snap to Grid" name="snap_to_grid" />
        <check text="View Grid" name="view_grid" />
        <check text="Pixel Grid" name="pixel_grid" />
        <button text="Set &amp;Grid" name="set_grid" />
      </box>
      <separator vertical="true" />
      <box vertical="true" expansive="true" childspacing="2">
        <box horizontal="true">
	  <grid columns="2" childspacing="0" expansive="true">

	    <label text="Pen:" />
	    <box horizontal="true" childspacing="0" name="brush_type_box" /><!-- custom widget -->

            <label text="Size:" />
            <slider min="1" max="32" name="brush_size" minwidth="32" cell_align="horizontal" />

            <label text="Angle:" />
            <slider min="0" max="180" name="brush_angle" cell_align="horizontal" />

            <label text="Opacity:" name="opacity_label" />
	    <slider min="0" max="255" name="opacity" cell_align="horizontal" />

            <label text="Tolerance:" name="tolerance_label" />
	    <slider min="0" max="255" name="tolerance" cell_align="horizontal" />

	  </grid>
	  <box name="brush_preview_box" /><!-- custom widget -->
        </box>
	<box vertical="true" name="spray_box">
	  <separator text="Spray:" horizontal="true" left="true" />
	  <box horizontal="true">
	    <box vertical="true" homogeneous="true" childspacing="0">
	      <label text="Spray Width:" />
	      <label text="Air Speed:" />
	    </box>
	    <box vertical="true" homogeneous="true" expansive="true" childspacing="0">
	      <slider min="1" max="32" name="spray_width" />
	      <slider min="1" max="100" name="air_speed" />
	    </box>
	  </box>
	</box>
      </box>
    </box>
  </box>
</window>
</jinete>