button.lua

   1 -- Simple immediate-mode buttons with (currently) just an onpress1 handler for
   2 -- the left button.
   3 --
   4 -- Buttons can nest in principle, though I haven't actually used that yet.
   5 --
   6 -- Don't rely on the order in which handlers are run. Within any widget, all
   7 -- applicable button handlers will run. If _any_ of them returns true, the
   8 -- event will continue to propagate elsewhere in the widget.
   9
  10 -- draw button and queue up event handlers
  11 function button(State, name, params)
  12   if params.bg then
  13     love.graphics.setColor(params.bg.r, params.bg.g, params.bg.b, params.bg.a)
  14     love.graphics.rectangle('fill', params.x,params.y, params.w,params.h, 5,5)
  15   end
  16   if params.icon then params.icon(params) end
  17   table.insert(State.button_handlers, params)
  18 end
  19
  20 -- process button event handlers
  21 function mouse_press_consumed_by_any_button(State, x, y, mouse_button)
  22   local button_pressed = false
  23   local consume_press = true
  24   for _,ev in ipairs(State.button_handlers) do
  25     if x>ev.x and x<ev.x+ev.w and y>ev.y and y<ev.y+ev.h then
  26       if ev.onpress1 and mouse_button == 1 then
  27         button_pressed = true
  28         if ev.onpress1() then
  29           consume_press = false
  30         end
  31       end
  32     end
  33   end
  34   return button_pressed and consume_press
  35 end