Class: Hokusai::Util::SegmentRenderer

Inherits:
Object
  • Object
show all
Defined in:
ui/src/hokusai/util/clamping_iterator.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(segment, iterator) ⇒ SegmentRenderer

Returns a new instance of SegmentRenderer.



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# File 'ui/src/hokusai/util/clamping_iterator.rb', line 7

def initialize(segment, iterator)
  @segment = segment
  @iterator = iterator
  @started = false
  @start_select = 0
  @stop_select = nil
  @select_x = nil
  @select_width = nil
end

Instance Attribute Details

#iterator ⇒ Object (readonly)

Returns the value of attribute iterator.



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# File 'ui/src/hokusai/util/clamping_iterator.rb', line 3

def iterator
  @iterator
end

#segment ⇒ Object (readonly)

Returns the value of attribute segment.



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# File 'ui/src/hokusai/util/clamping_iterator.rb', line 3

def segment
  @segment
end

#select_width ⇒ Object

Returns the value of attribute select_width.



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# File 'ui/src/hokusai/util/clamping_iterator.rb', line 4

def select_width
  @select_width
end

#select_x ⇒ Object

Returns the value of attribute select_x.



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# File 'ui/src/hokusai/util/clamping_iterator.rb', line 4

def select_x
  @select_x
end

#start_select ⇒ Object

Returns the value of attribute start_select.



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# File 'ui/src/hokusai/util/clamping_iterator.rb', line 4

def start_select
  @start_select
end

#started ⇒ Object

Returns the value of attribute started.



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# File 'ui/src/hokusai/util/clamping_iterator.rb', line 4

def started
  @started
end

#stop_select ⇒ Object

Returns the value of attribute stop_select.



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# File 'ui/src/hokusai/util/clamping_iterator.rb', line 4

def stop_select
  @stop_select
end

Instance Method Details

#can_render_inside(font_size, boundary) ⇒ Object 



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# File 'ui/src/hokusai/util/clamping_iterator.rb', line 121

def can_render_inside(font_size, boundary)
  iterator.y >= boundary[0] && iterator.y + font_size <= boundary[1]
end

#draw(font_size, boundary, selection: nil) ⇒ Object 



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# File 'ui/src/hokusai/util/clamping_iterator.rb', line 17

def draw(font_size, boundary, selection: nil)
  # selection_extract(font_size, boundary, selection: selection)
  draw_text(font_size, boundary)
  # selection_update(selection)
  # self.start_select = 0.0
  # self.stop_select = nil
end

#draw_text(font_size, boundary) ⇒ Object 



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# File 'ui/src/hokusai/util/clamping_iterator.rb', line 83

def draw_text(font_size, boundary)
  if can_render_inside(font_size, boundary)
    x = @iterator.x

    if @iterator.clamping.markdown
      segment.groups.each do |group|
        text = iterator.clamping[group.offset, group.size]

        if text == "\n"
          next
          # x += group.width
        end
        
        @iterator.on_draw_cb&.call(text, x, y, group)

        x += group.width
      end
    else
      @iterator.on_draw_cb&.call(text, x, y, segment)
    end
  end

  @iterator.y += font_size
  @iterator.height += font_size
end

#selection_extract(font_size, boundary, selection: nil) ⇒ Object 



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# File 'ui/src/hokusai/util/clamping_iterator.rb', line 25

def selection_extract(font_size, boundary, selection: nil)
  local_x = iterator.x
  y = iterator.y
  hit_box = Hokusai::Rect.new(0, 0, 0, 0)

  segment.chars.each do |char|
    if can_render_inside(font_size, boundary) && segment.char_is_selected(char)
      self.select_x ||= local_x
      self.select_width = select_width.nil? ? char.width : (select_width + char.width)
  
      if selector = selection
        if segment.select_begin == char.offset && selector.up? && !iterator.cursor_set && !selector.started
          iterator.cursor_position = [local_x, y, char.width, font_size.to_f]
          iterator.cursor_set = true
          selector.started = true
        elsif segment.select_end == char.offset && selector.down? && started
          iterator.cursor_position = [local_x + char.width, y, char.width, font_size.to_f]
        end
      end
    elsif !segment.select_end.nil? && segment.select_end < char.offset
      selection&.started = false
    end

    # hit_box.x = local_x
    # hit_box.y = y
    # hit_box.width = char.width
    # hit_box.height = font_size.to_f
    hit_box = Hokusai::Rect.new(local_x, y, char.width, font_size.to_f)
    iterator.on_char_cb&.call(char, hit_box, char.offset)

    if selector = selection
      if selector.active? && selector.selected(local_x, y, char.width.to_f, font_size.to_f)
        self.stop_select = char.offset

        unless started
          self.start_select = char.offset
          self.started = true
        end
      end
    end

    local_x += char.width
  end

  return unless select_x && select_width
  iterator.on_draw_selection_cb&.call(select_x, y, select_width, font_size.to_f)
end

#selection_update(selection) ⇒ Object 



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# File 'ui/src/hokusai/util/clamping_iterator.rb', line 73

def selection_update(selection)
  return unless selection&.active?
  segment.make_selection(start_select, stop_select)

  return if stop_select.nil?

  iterator.start_select ||= start_select + iterator.cursor_offset
  iterator.stop_select = stop_select + iterator.cursor_offset
end

#text ⇒ Object 



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# File 'ui/src/hokusai/util/clamping_iterator.rb', line 117

def text
  iterator.clamping[segment.offset, segment.size]
end

#x ⇒ Object 



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# File 'ui/src/hokusai/util/clamping_iterator.rb', line 109

def x
  iterator.x
end

#y ⇒ Object 



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# File 'ui/src/hokusai/util/clamping_iterator.rb', line 113

def y
  iterator.y
end