Class: CyberarmEngine::Element::Button

Inherits:
TextBlock show all
Defined in:
lib/cyberarm_engine/ui/elements/button.rb

Direct Known Subclasses

EditLine, ListBox, MenuItem, Slider::Handle, ToggleButton

Constant Summary

Constants included from Theme

Theme::THEME

Instance Attribute Summary

Attributes inherited from CyberarmEngine::Element

#background_canvas, #border_canvas, #element_visible, #event_handler, #options, #parent, #style, #tip, #x, #y, #z

Instance Method Summary collapse

Methods inherited from TextBlock

#handle_text_wrapping, #line_width, #update

Methods inherited from CyberarmEngine::Element

#background=, #background_image=, #background_nine_slice=, #blur, #button_down, #button_up, #child_of?, #clicked_left_mouse_button, #content_height, #content_width, #debug_draw, #default_events, #dimensional_size, #draggable?, #draw, #element_visible?, #enabled=, #enabled?, #enter, #focus, #focused?, #height, #hide, #hit?, #inner_height, #inner_width, #inspect, #is_root?, #leave, #left_mouse_button, #max_scroll_height, #max_scroll_width, #noncontent_height, #noncontent_width, #outer_height, #outer_width, #parent_of?, #recalculate, #recalculate_if_size_changed, #released_left_mouse_button, #reposition, #root, #safe_style_fetch, #scroll_height, #scroll_width, #set_background, #set_background_image, #set_background_nine_slice, #set_border_color, #set_border_thickness, #set_color, #set_font, #set_margin, #set_padding, #set_static_position, #show, #space_available_height, #space_available_width, #stylize, #to_s, #toggle, #update, #update_background, #update_background_image, #update_background_nine_slice, #update_styles, #visible?, #width

Methods included from Common

#alt_down?, #control_down?, #current_state, #darken, #draw_rect, #fill, #find_element_by_tag, #get_asset, #get_image, #get_sample, #get_song, #lighten, #opacity, #pop_state, #previous_state, #push_state, #shift_down?, #shift_state, #show_cursor, #show_cursor=, #window

Methods included from CyberarmEngine::Event

#event, #publish, #subscribe, #unsubscribe

Methods included from Theme

#deep_merge, #default, #theme_defaults

Constructor Details

#initialize(text_or_image, options = {}, block = nil) ⇒ Button

Returns a new instance of Button.



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# File 'lib/cyberarm_engine/ui/elements/button.rb', line 4

def initialize(text_or_image, options = {}, block = nil)
  @image = nil
  @scale_x = 1
  @scale_y = 1

  @image = text_or_image if text_or_image.is_a?(Gosu::Image)

  super(text_or_image, options, block)

  @style.background_canvas.background = @style.background
end

Instance Method Details

#draw_image ⇒ Object 



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# File 'lib/cyberarm_engine/ui/elements/button.rb', line 24

def draw_image
  @image.draw(
    @style.border_thickness_left + @style.padding_left + @x,
    @style.border_thickness_top + @style.padding_top + @y,
    @z + 2,
    @scale_x, @scale_y, @text.color
  )
end

#draw_text ⇒ Object 



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# File 'lib/cyberarm_engine/ui/elements/button.rb', line 33

def draw_text
  @text.draw
end

#layout ⇒ Object 



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# File 'lib/cyberarm_engine/ui/elements/button.rb', line 37

def layout
  unless @enabled
    @style.background_canvas.background = @style.disabled[:background]
    @text.color = @style.disabled[:color]
  else
    @style.background_canvas.background = @style.background
    @text.color = @style.color
  end

  if @image
    @width = 0
    @height = 0

    _width = dimensional_size(@style.image_width, :width)
    _height = dimensional_size(@style.image_height, :height)

    if _width && _height
      @scale_x = _width.to_f / @image.width
      @scale_y = _height.to_f / @image.height
    elsif _width
      @scale_x = _width.to_f / @image.width
      @scale_y = @scale_x
    elsif _height
      @scale_y = _height.to_f / @image.height
      @scale_x = @scale_y
    else
      @scale_x = 1
      @scale_y = 1
    end

    @width = _width || @image.width.floor * @scale_x
    @height = _height || @image.height.floor * @scale_y

    update_background
  else
    super
  end
end

#render ⇒ Object 



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# File 'lib/cyberarm_engine/ui/elements/button.rb', line 16

def render
  if @image
    draw_image
  else
    draw_text
  end
end

#value ⇒ Object 



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# File 'lib/cyberarm_engine/ui/elements/button.rb', line 76

def value
  @image || super
end

#value=(value) ⇒ Object 



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# File 'lib/cyberarm_engine/ui/elements/button.rb', line 80

def value=(value)
  if value.is_a?(Gosu::Image)
    @image = value
  else
    super
  end

  old_width = width
  old_height = height

  if old_width != width || old_height != height
    root.gui_state.request_recalculate
  else
    recalculate
  end

  publish(:changed, self.value)
end