collections {
   group {
      name: "main";
      parts {
         part {
            type: RECT;
            name: background;
            mouse_events: 0;
            description {
               color: 0 0 0 255;
            }
         }
         part {
            type: RECT;
            name: "area/vertical";
            mouse_events: 0;
            description {
               color: 255 0 0 255;
               align: 0.5 0;
               min: 20 30;
               max: 20 -1;
            }
         }
         part {
            type: RECT;
            name: "area/horizontal";
            mouse_events: 0;
            description {
               color: 255 0 0 255;
               align: 0 0.5;
               min: 30 20;
               max: -1 20;
            }
         }
         part {
            type: RECT;
            name: "threshold/horizontal";
            mouse_events: 0;
            description {
               color: 0 0 255 255;
               rel1 {
                  to: "drag/horizontal";
                  offset: -13 -13;
               }
               rel2 {
                  to: "drag/horizontal";
                  offset: +12 +12;
               }
            }
         }
         part {
            type: RECT;
            name: "drag/horizontal";
            mouse_events: 1;
            dragable {
               confine: "area/horizontal";
               threshold: "threshold/horizontal";
               x: 1 1 0;
               y: 0 0 0;
            }
            description {
               aspect: 1 1;
               color: 0 255 0 255;
               min: 20 20;
               max: 20 20;
            }
         }
         part {
            type: RECT;
            name: "drag/vertical";
            mouse_events: 1;
            dragable {
               confine: "area/vertical";
               threshold: "threshold/horizontal";
               x: 0 0 0;
               y: 1 1 0;
            }
            description {
               aspect: 1 1;
               color: 0 255 255 255;
               min: 20 20;
               max: 20 20;
            }
         }
      }
   }
}