Class: CyberarmEngine::Element::TextBlock

Inherits:
CyberarmEngine::Element show all
Defined in:
lib/cyberarm_engine/ui/elements/text_block.rb

Direct Known Subclasses

Banner, Button, Caption, Inscription, Link, Para, Subtitle, Tagline, Title, ToolTip

Constant Summary

Constants included from Theme

Theme::THEME

Instance Attribute Summary

Attributes inherited from CyberarmEngine::Element

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

Instance Method Summary collapse

Methods inherited from CyberarmEngine::Element

#background=, #blur, #button_down, #button_up, #clicked_left_mouse_button, #content_height, #content_width, #debug_draw, #default_events, #dimensional_size, #draggable?, #draw, #enabled?, #enter, #focus, #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, #released_left_mouse_button, #reposition, #root, #safe_style_fetch, #scroll_height, #scroll_width, #set_background, #set_border_color, #set_border_thickness, #set_margin, #set_padding, #set_static_position, #show, #stylize, #to_s, #toggle, #update, #update_background, #update_styles, #visible?, #width

Methods included from Common

#current_state, #darken, #draw_rect, #fill, #get_asset, #get_image, #get_sample, #get_song, #lighten, #opacity, #pop_state, #previous_state, #push_state, #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, options = {}, block = nil) ⇒ TextBlock

Returns a new instance of TextBlock.



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

def initialize(text, options = {}, block = nil)
  super(options, block)

  @text = Text.new(
    text, font: @options[:font], z: @z, color: @options[:color],
          size: @options[:text_size], shadow: @options[:text_shadow],
          shadow_size: @options[:text_shadow_size],
          shadow_color: @options[:text_shadow_color]
  )

  @raw_text = text
end

Instance Method Details

#handle_text_wrapping(max_width) ⇒ Object 



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# File 'lib/cyberarm_engine/ui/elements/text_block.rb', line 54

def handle_text_wrapping(max_width)
  max_width ||= @parent&.width
  max_width ||= @x - (window.width + noncontent_width)
  wrap_behavior = style.text_wrap
  copy = @raw_text.to_s.dup

  if line_width(copy[0]) <= max_width && line_width(copy) > max_width && wrap_behavior != :none
    breaks = []
    line_start = 0
    line_end   = copy.length

    while line_start != copy.length
      if line_width(copy[line_start...line_end]) > max_width
        line_end = ((line_end - line_start) / 2.0)
        line_end = 1.0 if line_end <= 1
      elsif line_end < copy.length && line_width(copy[line_start...line_end + 1]) < max_width
        # To small, grow!
        # TODO: find a more efficient way
        line_end += 1

      else # FOUND IT!
        entering_line_end = line_end.floor
        max_reach = line_end.floor - line_start < 63 ? line_end.floor - line_start : 63
        reach = 0

        if wrap_behavior == :word_wrap
          max_reach.times do |i|
            reach = i
            break if copy[line_end.floor - i].to_s.match(/[[:punct:]]| /)
          end

          # puts "Max width: #{max_width}/#{line_width(@raw_text)} Reach: {#{reach}/#{max_reach}} Line Start: #{line_start}/#{line_end.floor} (#{copy.length}|#{@raw_text.length}) [#{entering_line_end}] '#{copy}' {#{copy[line_start...line_end]}}"
          line_end = line_end.floor - reach + 1 if reach != max_reach # Add +1 to walk in front of punctuation
        end

        breaks << line_end.floor
        line_start = line_end.floor
        line_end = copy.length

        break if entering_line_end == copy.length || reach == max_reach
      end
    end

    breaks.each_with_index do |pos, index|
      copy.insert(pos + index, "\n") if pos + index >= 0 && pos + index < copy.length
    end
  end

  @text.text = copy
end

#line_width(text) ⇒ Object 



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# File 'lib/cyberarm_engine/ui/elements/text_block.rb', line 105

def line_width(text)
  (@text.textobject.markup_width(text) + noncontent_width)
end

#recalculate ⇒ Object 



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# File 'lib/cyberarm_engine/ui/elements/text_block.rb', line 21

def recalculate
  @width  = 0
  @height = 0

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

  handle_text_wrapping(_width)

  @width  = _width  || @text.width.round
  @height = _height || @text.height.round

  @text.y = @style.border_thickness_top + @style.padding_top + @y
  @text.z = @z + 3

  if (text_alignment = @options[:text_align])
    case text_alignment
    when :left
      @text.x = @style.border_thickness_left + @style.padding_left + @x
    when :center
      @text.x = if @text.width <= outer_width
                  @x + outer_width / 2 - @text.width / 2
                else # Act as left aligned
                  @style.border_thickness_left + @style.padding_left + @x
                end
    when :right
      @text.x = @x + outer_width - (@text.width + @style.border_thickness_right + @style.padding_right)
    end
  end

  update_background
end

#render ⇒ Object 



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# File 'lib/cyberarm_engine/ui/elements/text_block.rb', line 17

def render
  @text.draw
end

#value ⇒ Object 



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# File 'lib/cyberarm_engine/ui/elements/text_block.rb', line 109

def value
  @raw_text
end

#value=(value) ⇒ Object 



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# File 'lib/cyberarm_engine/ui/elements/text_block.rb', line 113

def value=(value)
  @raw_text = value.to_s.chomp

  old_width = width
  old_height = height
  recalculate

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

  publish(:changed, self.value)
end