First dirty commit of old code

druid/components/pie_progress_bar.lua

@@ -0,0 +1,51 @@
+local M = {}
+
+local FULL_FILL = 360
+
+local function set_bar_to(instance, set_to)
+  instance.last_value = set_to
+  gui.cancel_animation(instance.node, gui.PROP_FILL_ANGLE)
+  gui.set_fill_angle(instance.node, FULL_FILL * set_to)
+end
+
+--- Fill a pie progress bar and stop progress animation
+function M.fill_bar(instance)
+  set_bar_to(instance, 1)
+end
+
+--- To empty a pie progress bar
+function M.empty_bar(instance)
+  set_bar_to(instance, 0)
+end
+
+--- Set fill a pie progress bar to value
+-- @param to - value between 0..1
+function M.set_to(instance, to)
+  set_bar_to(instance, to)
+end
+
+--- Start animation of a pie progress bar
+-- @param to - value between 0..1
+-- @param duration - time of animation
+-- @param callback - callback when progress ended if need
+function M.start_progress_to(instance, to, duration, callback)
+  instance.is_anim = true
+  instance.last_value = to
+  gui.animate(instance.node, gui.PROP_FILL_ANGLE, FULL_FILL * to, gui.EASING_LINEAR, duration, 0,
+    function()
+      instance.is_anim = false
+      if callback then
+        callback(instance.parent.parent)
+      end
+    end
+  )
+end
+
+--- Called when layout updated (rotate for example)
+function M.on_layout_updated(instance)
+  if not instance.is_anim then
+    set_bar_to(instance, instance.last_value)
+  end
+end
+
+return M