Remove match_event from druid, add hover component

druid/base/back_handler.lua

@@ -13,7 +13,6 @@ local M = component.create("back_handler", { const.ON_INPUT })
 -- @tparam callback callback On back button
 -- @tparam[opt] params Callback argument
 function M.init(self, callback, params)
-	self.event = const.ACTION_BACK
 	self.callback = callback
 	self.params = params
 end
@@ -24,11 +23,12 @@ end
 -- @tparam string action_id on_input action id
 -- @tparam table action on_input action
 function M.on_input(self, action_id, action)
-	if action[const.RELEASED] then
+	if action_id == const.ACTION_BACK and action[const.RELEASED] then
 		self.callback(self:get_context(), self.params)
+		return true
 	end
 
-	return true
+	return false
 end
 
 

druid/base/blocker.lua

@@ -10,11 +10,14 @@ local M = component.create("blocker", { const.ON_SWIPE })
 
 function M.init(self, node)
 	self.node = self:get_node(node)
-	self.event = const.ACTION_TOUCH
 end
 
 
 function M.on_input(self, action_id, action)
+	if action_id ~= const.ACTION_TOUCH then
+		return false
+	end
+
 	if not helper.is_enabled(self.node) then
 		return false
 	end

druid/base/button.lua

@@ -22,8 +22,6 @@ function M.init(self, node, callback, params, anim_node, event)
 	self.style = self:get_style()
 	self.node = self:get_node(node)
 
-	-- TODO: match event inside on_input?
-	self.event = const.ACTION_TOUCH
 	self.anim_node = anim_node and helper:get_node(anim_node) or self.node
 	-- TODO: rename to start_scale
 	self.scale_from = gui.get_scale(self.anim_node)
@@ -67,6 +65,10 @@ end
 
 
 function M.on_input(self, action_id, action)
+	if action_id ~= const.ACTION_TOUCH then
+		return false
+	end
+
 	if not helper.is_enabled(self.node) then
 		return false
 	end

druid/base/hover.lua

@@ -0,0 +1,76 @@
+--- Component to handle hover node interaction
+-- @module druid.input
+
+local Event = require("druid.event")
+local const = require("druid.const")
+local helper = require("druid.helper")
+local component = require("druid.component")
+
+local M = component.create("hover", { const.ON_INPUT })
+
+
+--- Component init function
+-- @function hover:init
+-- @tparam table self Component instance
+-- @tparam node node Gui node
+-- @tparam function on_hover_callback Hover callback
+function M.init(self, node, on_hover_callback)
+	self.style = self:get_style()
+	self.node = self:get_node(node)
+
+	self._is_hovered = false
+	self.on_hover = Event()
+	if on_hover_callback then
+		self.on_hover:subscribe(on_hover_callback)
+	end
+end
+
+
+local function set_hover(self, state)
+	if self._is_hovered ~= state then
+		self._is_hovered = state
+		self.on_hover:trigger(state)
+	end
+end
+
+
+function M.on_input(self, action_id, action)
+	if action_id ~= const.ACTION_TOUCH then
+		return
+	end
+
+	if not helper.is_enabled(self.node) then
+		return false
+	end
+
+	local is_pick = gui.pick_node(self.node, action.x, action.y)
+
+	if not is_pick then
+		set_hover(self, false)
+		return false
+	end
+
+	if action.released then
+		set_hover(self, false)
+	else
+		set_hover(self, true)
+	end
+end
+
+
+function M.on_swipe(self)
+	set_hover(self, false)
+end
+
+
+--- Strict button click area. Useful for
+-- no click events outside stencil node
+-- @function button:set_click_zone
+-- @tparam table self Component instance
+-- @tparam node zone Gui node
+function M.set_click_zone(self, zone)
+	self.click_zone = self:get_node(zone)
+end
+
+
+return M