Method: Fox::Canvas::ShapeCanvas#onLeftBtnPress

Defined in:
lib/fox16/canvas.rb

#onLeftBtnPress(sender, sel, evt) ⇒ Object

Left button press



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# File 'lib/fox16/canvas.rb', line 506

def onLeftBtnPress(sender, sel, evt)
  handle(self, MKUINT(0, SEL_FOCUS_SELF), evt)
  if enabled?
    grab
    flags &= ~FLAG_UPDATE

    # Give target the first chance at handling this
    return 1 if target && (target.handle(self, MKUINT(message, SEL_LEFTBUTTONPRESS), evt) != 0)

    # Locate shape
    shape = findShape(evt.win_x, evt.win_y)

    # No shape here
    if shape.nil?
      return 1
    end

    # Change current shape
    @currentShape = shape

    # Change item selection
    if shape.enabled? && !shape.selected?
      selectShape(shape, true)
    end

    # Are we dragging?
    if shape.selected? && shape.draggable?
      flags |= FLAG_TRYDRAG
    end

    flags |= FLAG_PRESSED
    return 1
  end
  return 0
end