UIElement:update_mouse_target

Executes mouse callbacks (on_mouse_over, on_mouse_out, etc.) on applicable elements within this tree.

This method can only be called on elements that have no parent.

Usage

ui_element:update_mouse_target()

Examples

This example defines a scene drawing a UI tree that covers the whole screen:

local MyScene = Class("MyScene", crystal.Scene);

MyScene.init = function(self)
  self.ui = crystal.Image:new();
  self.ui.on_mouse_enter = function()
    print("Cursor overlapping the image!");
  end
end

MyScene.update = function(self, dt)
  self.ui:update_tree(dt, 100, 100);
end

MyScene.draw = function(self)
  self.ui:draw_tree();
end

MyScene.mouse_moved = function(self, x, y, dx, dy, is_touch)
  self.ui:update_mouse_target();
end