Class: RubyRich::Layout

Inherits:
Object
  • Object
show all
Defined in:
lib/ruby_rich/layout.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name: nil, ratio: 1, size: nil, width: nil, height: nil) ⇒ Layout

Returns a new instance of Layout.



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# File 'lib/ruby_rich/layout.rb', line 7

def initialize(name: nil, ratio: 1, size: nil, width: nil, height: nil)
  @name = name
  @ratio = ratio
  @size = size
  @children = []
  @content = nil
  @parent = nil
  @x_offset = 0
  @y_offset = 0
  @width = width if width
  @height = height if height
  @split_direction = nil
  @show = true
  @event_listeners = {}
  @event_intercepted = false
  @mouse_capture = nil
end

Instance Attribute Details

#children ⇒ Object

Returns the value of attribute children.



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# File 'lib/ruby_rich/layout.rb', line 3

def children
  @children
end

#content ⇒ Object

Returns the value of attribute content.



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# File 'lib/ruby_rich/layout.rb', line 3

def content
  @content
end

#dialog ⇒ Object

Returns the value of attribute dialog.



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# File 'lib/ruby_rich/layout.rb', line 3

def dialog
  @dialog
end

#height ⇒ Object

Returns the value of attribute height.



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# File 'lib/ruby_rich/layout.rb', line 4

def height
  @height
end

#live ⇒ Object

Returns the value of attribute live.



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# File 'lib/ruby_rich/layout.rb', line 3

def live
  @live
end

#name ⇒ Object

Returns the value of attribute name.



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# File 'lib/ruby_rich/layout.rb', line 3

def name
  @name
end

#parent ⇒ Object

Returns the value of attribute parent.



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# File 'lib/ruby_rich/layout.rb', line 3

def parent
  @parent
end

#ratio ⇒ Object

Returns the value of attribute ratio.



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# File 'lib/ruby_rich/layout.rb', line 3

def ratio
  @ratio
end

#show ⇒ Object

Returns the value of attribute show.



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# File 'lib/ruby_rich/layout.rb', line 4

def show
  @show
end

#size ⇒ Object

Returns the value of attribute size.



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# File 'lib/ruby_rich/layout.rb', line 3

def size
  @size
end

#split_direction ⇒ Object (readonly)

Returns the value of attribute split_direction.



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# File 'lib/ruby_rich/layout.rb', line 5

def split_direction
  @split_direction
end

#width ⇒ Object

Returns the value of attribute width.



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# File 'lib/ruby_rich/layout.rb', line 4

def width
  @width
end

#x_offset ⇒ Object

Returns the value of attribute x_offset.



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# File 'lib/ruby_rich/layout.rb', line 4

def x_offset
  @x_offset
end

#y_offset ⇒ Object

Returns the value of attribute y_offset.



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# File 'lib/ruby_rich/layout.rb', line 4

def y_offset
  @y_offset
end

Instance Method Details

#[](name) ⇒ Object 



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# File 'lib/ruby_rich/layout.rb', line 116

def [](name)
  find_by_name(name)
end

#add_child(layout) ⇒ Object 



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# File 'lib/ruby_rich/layout.rb', line 101

def add_child(layout)
  layout.parent = self
  @children << layout
end

#calculate_dimensions(terminal_width, terminal_height) ⇒ Object 



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# File 'lib/ruby_rich/layout.rb', line 110

def calculate_dimensions(terminal_width, terminal_height)
  @x_offset = 0
  @y_offset = 0
  calculate_node_dimensions(terminal_width, terminal_height)
end

#calculate_node_dimensions(available_width, available_height) ⇒ Object 



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# File 'lib/ruby_rich/layout.rb', line 230

def calculate_node_dimensions(available_width, available_height)
  @width = if @size && @parent&.split_direction == :row
             [@size, available_width].min
           else
             available_width
           end

  @height = if @size && @parent&.split_direction == :column
              [@size, available_height].min
            else
              available_height
            end

  if @content.class == RubyRich::Panel
    @content.width = @width
    @content.height = @height
  else
    @content.width = @width if @content.respond_to?(:width=)
    @content.height = @height if @content.respond_to?(:height=)
  end

  return if @children.empty?

  @children.each do |child|
    next unless child.content.respond_to?(:desired_height)
    next unless @split_direction == :column

    child.size = [[child.content.desired_height, 1].max, available_height - 2].min
  end

  case @split_direction
  when :row
    remaining_width = @width
    fixed_children, flexible_children = @children.partition { |c| c.size }

    fixed_children.each do |child|
      child_width = [child.size, remaining_width].min
      child.width = child_width
      remaining_width -= child_width
    end

    total_ratio = flexible_children.sum(&:ratio)
    if total_ratio > 0
      ratio_width = remaining_width.to_f / total_ratio
      flexible_children.each do |child|
        child_width = (child.ratio * ratio_width).floor
        child.width = child_width
        remaining_width -= child_width
      end

      flexible_children.last.width += remaining_width if remaining_width > 0
    end

    @children.each { |child| child.height = @height }

    current_x = @x_offset
    @children.each do |child|
      child.x_offset = current_x
      child.y_offset = @y_offset
      current_x += child.width
      child.calculate_node_dimensions(child.width, child.height)
    end

  when :column
    remaining_height = @height
    fixed_children, flexible_children = @children.partition { |c| c.size }

    fixed_children.each do |child|
      child_height = [child.size, remaining_height].min
      child.height = child_height
      remaining_height -= child_height
    end

    total_ratio = flexible_children.sum(&:ratio)
    if total_ratio > 0
      ratio_height = remaining_height.to_f / total_ratio
      flexible_children.each do |child|
        child_height = (child.ratio * ratio_height).floor
        child.height = child_height
        remaining_height -= child_height
      end

      flexible_children.last.height += remaining_height if remaining_height > 0
    end

    @children.each { |child| child.width = @width }

    current_y = @y_offset
    @children.each do |child|
      child.x_offset = @x_offset
      child.y_offset = current_y
      current_y += child.height
      child.calculate_node_dimensions(child.width, child.height)
    end
  end
end

#contains?(x, y) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ruby_rich/layout.rb', line 68

def contains?(x, y)
  return false unless @show
  return false unless @width && @height

  x >= @x_offset &&
    x < @x_offset + @width &&
    y >= @y_offset &&
    y < @y_offset + @height
end

#draw ⇒ Object 



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# File 'lib/ruby_rich/layout.rb', line 153

def draw
  puts render
end

#find_by_name(name) ⇒ Object 



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# File 'lib/ruby_rich/layout.rb', line 120

def find_by_name(name)
  return self if @name == name
  @children.each do |child|
    result = child.find_by_name(name)
    return result if result
  end
  nil
end

#hide_dialog ⇒ Object 



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# File 'lib/ruby_rich/layout.rb', line 133

def hide_dialog
  @dialog.notify_listeners({:name=>:close})
  @dialog = nil
end

#hit_test(x, y) ⇒ Object 



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# File 'lib/ruby_rich/layout.rb', line 78

def hit_test(x, y)
  return nil unless contains?(x, y)

  @children.reverse_each do |child|
    hit = child.hit_test(x, y)
    return hit if hit
  end

  self
end

#key(event_name, priority = 0, &block) ⇒ Object 



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# File 'lib/ruby_rich/layout.rb', line 25

def key(event_name, priority = 0, &block)
  unless @event_listeners[event_name]
    @event_listeners[event_name] = []
  end
  @event_listeners[event_name] << { priority: priority, block: block }
  @event_listeners[event_name].sort_by! { |l| -l[:priority] } # Higher priority first
end

#notify_listeners(event_data) ⇒ Object 



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# File 'lib/ruby_rich/layout.rb', line 38

def notify_listeners(event_data)
  return route_mouse_event(event_data) if event_data[:type] == :mouse

  return if @event_intercepted
  if @dialog
    @dialog.notify_listeners(event_data)
  else
    event_name = event_data[:name]
    if @event_listeners[event_name]
      @event_listeners[event_name].each do |listener|
        next if @event_intercepted
        result = listener[:block].call(event_data, self.root.live)
        if result == true
          @event_intercepted = true
        end
      end
    end
    
    unless @event_intercepted
      @children.each do |child|
        child.notify_listeners(event_data)
      end
    end
  end
end

#render ⇒ Object 



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# File 'lib/ruby_rich/layout.rb', line 138

def render
  # Convert buffer to string (join lines with newlines)
  buffer = render_to_buffer
  buffer.map { |line| line.compact.join("") }.join("\n")
end

#render_dialog_into(buffer) ⇒ Object 



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# File 'lib/ruby_rich/layout.rb', line 157

def render_dialog_into(buffer)
  start_x = (@width - 2 - @dialog.width) / 2 + 1
  start_y = (@height - 2 - @dialog.height) / 2 + 1
  dialog_buffer = @dialog.render_to_buffer
  buffer.each_with_index do |arr, y|
    arr.each_with_index do |char, x|          
      if x >= start_x && y >= start_y
        if y-start_y <= dialog_buffer.size-1 && x-start_x <= dialog_buffer[y-start_y].size-1
          buffer[y][x] = dialog_buffer[y-start_y][x-start_x]
        end
      end
    end
  end
end

#render_into(buffer) ⇒ Object 



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# File 'lib/ruby_rich/layout.rb', line 172

def render_into(buffer)
  children.each { |child| child.render_into(buffer) } if children
  return unless content
  content_lines = if content.is_a?(String)
                    content.split("\n")[0...height]
                  else
                    normalize_rendered_lines(content.render)[0...height]
                  end

  content_lines.each_with_index do |line, line_index|
    y_pos = y_offset + line_index
    next if y_pos >= buffer.size

    in_escape = false
    escape_char = ""
    char_width = 0 # Initialize width to 0 for position calculation
    line.each_char do |char|
      # Handle ANSI escape codes
      if in_escape
        escape_char += char
        in_escape = false if char == 'm'
        if escape_char=="\e[0m"
          escape_char = ""
        end
        next
      elsif char.ord == 27 # Detect escape sequence start \e
        in_escape = true
        escape_char += char
        next
      end

      # Calculate character width
      char_w = case char.ord
               when 0x0000..0x007F then 1 # English characters
               when 0x4E00..0x9FFF then 2 # Chinese characters
               else Unicode::DisplayWidth.of(char)
               end
      # Calculate character start position
      x_start = x_offset + char_width

      # Skip if beyond right boundary
      next if x_start >= buffer[y_pos].size

      # Handle character rendering (Chinese characters may occupy multiple positions)
      char_w.times do |i|
        x_pos = x_start + i
        break if x_pos >= buffer[y_pos].size # Stop at right boundary
        unless escape_char.empty?
          char = escape_char + char + "\e[0m" # Record character's actual color each time
        end
        buffer[y_pos][x_pos] = char unless i > 0 # Write Chinese character only at first position to avoid overwriting
        buffer[y_pos][x_pos+1] = nil if char_w == 2
      end
      char_width += char_w # Update cumulative width
    end
  end
end

#render_to_buffer ⇒ Object 



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# File 'lib/ruby_rich/layout.rb', line 144

def render_to_buffer
  # Initialize buffer (2D array, each element represents a character)
  buffer = Array.new(@height) { Array.new(@width, " ") }
  # Recursively fill content into buffer
  render_into(buffer)
  render_dialog_into(buffer) if @dialog
  return buffer
end

#root ⇒ Object 



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# File 'lib/ruby_rich/layout.rb', line 64

def root
  @parent ? @parent.root : self
end

#show_dialog(dialog) ⇒ Object 



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# File 'lib/ruby_rich/layout.rb', line 129

def show_dialog(dialog)
  @dialog = dialog
end

#split_column(*layouts) ⇒ Object 



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# File 'lib/ruby_rich/layout.rb', line 95

def split_column(*layouts)
  @split_direction = :column
  layouts.each { |l| l.parent = self }
  @children.concat(layouts)
end

#split_row(*layouts) ⇒ Object 



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# File 'lib/ruby_rich/layout.rb', line 89

def split_row(*layouts)
  @split_direction = :row
  layouts.each { |l| l.parent = self }
  @children.concat(layouts)
end

#update_content(content) ⇒ Object 



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# File 'lib/ruby_rich/layout.rb', line 106

def update_content(content)
  @content = content
end