Class: RBGL::GUI::Wayland::Backend

Inherits:
Backend
  • Object
show all
Defined in:
lib/rbgl/gui/wayland/backend.rb

Constant Summary collapse

BUFFER_WAIT_TIMEOUT = 
0.25
BUFFER_POLL_INTERVAL = 
0.016

Instance Attribute Summary

Attributes inherited from Backend

#height, #title, #width

Instance Method Summary collapse

Methods inherited from Backend

#metal_available?, #native_handle, #poll_events_raw, #set_pixels

Constructor Details

#initialize(width, height, title = "RBGL", env: ENV, roundtrip_timeout: Connection::DEFAULT_ROUNDTRIP_TIMEOUT) ⇒ Backend

Returns a new instance of Backend.



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# File 'lib/rbgl/gui/wayland/backend.rb', line 12

def initialize(width, height, title = "RBGL", env: ENV, roundtrip_timeout: Connection::DEFAULT_ROUNDTRIP_TIMEOUT)
  super(width, height, title)
  @connection = Connection.new(env: env, roundtrip_timeout: roundtrip_timeout)
  @windows = {}
  setup_window(width, height, title)
end

Instance Method Details

#close ⇒ Object 



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# File 'lib/rbgl/gui/wayland/backend.rb', line 96

def close
  return unless @handle

  window = @windows[@handle]
  return unless window

  window[:should_close] = true
  window[:toplevel].destroy
  window[:xdg_surface].destroy
  window[:surface].destroy
  window.fetch(:buffers, [window[:shm_buffer]].compact).each(&:destroy)
  @windows.delete(@handle)
  @handle = nil
end

#poll_events ⇒ Object 



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# File 'lib/rbgl/gui/wayland/backend.rb', line 69

def poll_events
  @connection.dispatch_pending.filter_map { |event| convert_event(event) }
end

#present(framebuffer) ⇒ Object 



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# File 'lib/rbgl/gui/wayland/backend.rb', line 48

def present(framebuffer)
  return false unless @handle

  window = @windows[@handle]
  return false unless window

  buffer_object = wait_for_available_buffer(window)
  return false unless buffer_object

  buffer = convert_to_wayland_format(framebuffer)
  buffer_object.write(buffer)

  window[:surface].damage(0, 0, framebuffer.width, framebuffer.height)
  window[:surface].attach(buffer_object, 0, 0)
  buffer_object.mark_in_use
  window[:shm_buffer] = buffer_object
  window[:surface].commit
  @connection.flush
  true
end

#resize(width, height) ⇒ Object 



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# File 'lib/rbgl/gui/wayland/backend.rb', line 73

def resize(width, height)
  super
  return unless @handle

  window = @windows[@handle]
  return unless window
  return if window[:width] == width && window[:height] == height

  old_buffers = window.fetch(:buffers, [window[:shm_buffer]].compact)
  new_buffers = create_shm_buffers(width, height)
  window[:buffers] = new_buffers
  window[:shm_buffer] = new_buffers.first
  window[:width] = width
  window[:height] = height
  old_buffers.each(&:destroy)
end

#should_close? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rbgl/gui/wayland/backend.rb', line 90

def should_close?
  return false unless @handle

  @windows[@handle]&.[](:should_close) || false
end