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147 lines
3.4 KiB
Lua
147 lines
3.4 KiB
Lua
--- Component to handle basic GUI button
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-- @module base.button
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-- TODO: Add button mode:
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-- Long tap
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-- Repeated tap
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local const = require("druid.const")
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local helper = require("druid.helper")
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local component = require("druid.system.component")
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local M = component.new("button", { const.ON_INPUT })
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--- Component init function
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-- @function button:init
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-- @tparam table self Component instance
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-- @tparam node node Gui node
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-- @tparam function callback Button callback
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-- @tparam[opt] table params Button callback params
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-- @tparam[opt] node anim_node Button anim node (node, if not provided)
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-- @tparam[opt] string event Button react event, const.ACTION_TOUCH by default
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function M.init(self, node, callback, params, anim_node, event)
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assert(callback, "Button should have callback. To block input on zone use blocker component")
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self.style = self:get_style()
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self.node = helper.get_node(node)
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self.event = const.ACTION_TOUCH
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self.anim_node = anim_node and helper.get_node(anim_node) or self.node
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self.scale_from = gui.get_scale(self.anim_node)
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self.pos = gui.get_position(self.anim_node)
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self.callback = callback
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self.params = params
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self.hover_anim = self.style.IS_HOVER
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self.click_zone = nil
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end
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local function set_hover(self, state)
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if self._is_hovered ~= state then
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if self.style.on_hover then
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self.style.on_hover(self, self.anim_node, state)
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end
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self._is_hovered = state
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end
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end
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local function on_button_release(self)
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if not self.disabled then
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if not self.stub and self.can_action then
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self.can_action = false
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if self.style.on_click then
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self.style.on_click(self, self.anim_node)
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end
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self.callback(self:get_context(), self.params, self)
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else
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set_hover(self, false)
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end
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return true
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else
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if self.style.on_click_disabled then
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self.style.on_click_disabled(self, self.anim_node)
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end
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return false
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end
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end
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function M.on_input(self, action_id, action)
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if not helper.is_enabled(self.node) then
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return false
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end
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local is_pick = gui.pick_node(self.node, action.x, action.y)
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if self.click_zone then
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is_pick = is_pick and gui.pick_node(self.click_zone, action.x, action.y)
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end
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if not is_pick then
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-- Can't interact, if touch outside of button
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self.can_action = false
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set_hover(self, false)
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return false
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end
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if action.pressed then
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-- Can interact if start touch on the button
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self.can_action = true
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self.repeated_counter = 0
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return true
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end
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if action.released then
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set_hover(self, false)
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return on_button_release(self)
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else
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set_hover(self, true)
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end
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return not self.disabled
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end
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function M.on_swipe(self)
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-- unhover button if start swipe
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self.can_action = false
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set_hover(self, false)
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end
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function M.set_enabled(self, state)
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-- if self.disabled == state then
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-- return
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-- end
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self.disabled = not state
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if self.style.on_set_enabled then
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self.style.on_set_enabled(self, self.node, state)
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end
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end
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function M.get_enabled(self)
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return not self.disabled
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end
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--- Disable all button animations
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-- @function button:disable_animation
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-- @tparam table self Component instance
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function M.disable_animation(self)
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self.hover_anim = false
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end
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--- Strict button click area. Useful for
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-- no click events outside stencil node
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-- @function button:set_click_zone
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-- @tparam table self Component instance
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-- @tparam node zone Gui node
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function M.set_click_zone(self, zone)
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self.click_zone = helper.get_node(zone)
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end
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return M
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