Class: Echoes::GUI

Inherits:
Object
  • Object
show all
Defined in:
lib/echoes/gui.rb

Constant Summary collapse

CRASH_LOG = 
File.join(Dir.home, '.local', 'share', 'echoes', 'crash.log')

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(command: Echoes.config.shell, rows: Echoes.config.rows, cols: Echoes.config.cols, font_size: nil) ⇒ GUI

Returns a new instance of GUI.



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# File 'lib/echoes/gui.rb', line 26

def initialize(command: Echoes.config.shell, rows: Echoes.config.rows, cols: Echoes.config.cols, font_size: nil)
  @rows = rows
  @cols = cols
  # Persisted font size wins over the config default; both wrappers
  # gracefully fall through if NSUserDefaults isn't reachable.
  @font_size = font_size || Preferences.fetch_double(:font_size, default: Echoes.config.font_size)
  @command = command
  @tabs = []
  @active_tab = 0
  @colors = build_color_table
  @default_fg = make_color(*Echoes.config.foreground)
  @default_bg = make_color(*Echoes.config.background)
  @tab_bg = make_color(0.15, 0.15, 0.15)
  @tab_active_bg = make_color(0.3, 0.3, 0.3)
  @tab_fg = make_color(0.8, 0.8, 0.8)
  @selection_color = make_color(*Echoes.config.selection_color)
  @search_match_color = make_color(0.6, 0.5, 0.0)
  @search_current_color = make_color(0.8, 0.6, 0.0)
  @selection_anchor = nil
  @selection_end = nil
  @font_cache = {}
  @rgb_color_cache = {}
  @nsstring_cache = {}
  @cursor_blink_on = true
  @cursor_blink_counter = 0
  @search_mode = false
  @search_query = +""
  @search_matches = []
  @search_index = -1
  @bell_flash = 0
  @marked_text = nil
  @current_event = nil
  @pane_divider_color = make_color(*Echoes.config.pane_divider_color)
  @active_pane_border_color = make_color(*Echoes.config.active_pane_border_color)
  @copy_mode_cursor_color = make_color(*Echoes.config.copy_mode_cursor_color)
  @window_states = []
  @view_to_ws = {}
end

Class Method Details

.cwd_from_osc7_uri(uri_str) ⇒ Object 



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# File 'lib/echoes/gui.rb', line 92

def self.cwd_from_osc7_uri(uri_str)
  return nil if uri_str.nil? || uri_str.empty?
  uri = URI.parse(uri_str) rescue nil
  return nil unless uri && uri.scheme == 'file'
  host = uri.host.to_s
  local_host = Socket.gethostname
  unless host.empty? || host == 'localhost' ||
         host == local_host || host == local_host.split('.').first
    return nil
  end
  path = URI.decode_www_form_component(uri.path) rescue nil
  path if path && !path.empty? && Dir.exist?(path)
end

.file_paths_from_pasteboard(pb) ⇒ Object 



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# File 'lib/echoes/gui.rb', line 1804

def self.file_paths_from_pasteboard(pb)
  nsurl_class = ObjC.cls('NSURL')
  class_array = ObjC::MSG_PTR_1.call(ObjC.cls('NSArray'), ObjC.sel('arrayWithObject:'), nsurl_class)
  urls = ObjC::MSG_PTR_2.call(pb, ObjC.sel('readObjectsForClasses:options:'), class_array, Fiddle::Pointer.new(0))
  return nil if urls.null?

  count = ObjC::MSG_RET_L.call(urls, ObjC.sel('count'))
  return nil if count == 0

  paths = count.times.map do |i|
    url = ObjC::MSG_PTR_L.call(urls, ObjC.sel('objectAtIndex:'), i)
    ns_path = ObjC::MSG_PTR.call(url, ObjC.sel('path'))
    ObjC.to_ruby_string(ns_path).shellescape
  end
  paths.join(' ')
end

.pane_local_cwd(pane) ⇒ Object

Convert the active pane’s OSC 7 ‘current_directory` URI into a local filesystem path, or return nil if it isn’t a usable local path (missing, malformed, points at a remote host, or doesn’t exist).



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# File 'lib/echoes/gui.rb', line 87

def self.pane_local_cwd(pane)
  uri_str = pane&.screen&.current_directory
  cwd_from_osc7_uri(uri_str)
end

Instance Method Details

#activate_for_view(view_ptr) ⇒ Object 



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# File 'lib/echoes/gui.rb', line 131

def activate_for_view(view_ptr)
  ws = @view_to_ws[view_ptr.to_i]
  return unless ws
  save_window_state
  load_window_state(ws)
end

#close_tab(index) ⇒ Object 



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# File 'lib/echoes/gui.rb', line 106

def close_tab(index)
  return if index < 0 || index >= @tabs.size

  @tabs[index].close
  @tabs.delete_at(index)

  if @tabs.empty?
    close_current_window
    return
  end

  @active_tab = @active_tab.clamp(0, @tabs.size - 1)
end

#completion_picked(sender) ⇒ Object

Action callback for an NSMenuItem in the completion popup. Reads the sender’s tag, looks up the chosen candidate, and asks the pane to splice it into the input buffer. Public — invoked from the @completion_picked_closure with an explicit receiver (‘gui.completion_picked(sender)`); the rest of this section’s helpers are private (called from inside the class).



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# File 'lib/echoes/gui.rb', line 1979

public def completion_picked(sender)
  state = @completion_state
  return unless state
  tag = ObjC::MSG_RET_L.call(sender, ObjC.sel('tag'))
  cand = state[:candidates][tag]
  return unless cand
  state[:pane].apply_completion(word_start: state[:word_start], completion: cand)
  ObjC::MSG_VOID_I.call(@view, ObjC.sel('setNeedsDisplay:'), 1)
ensure
  @completion_state = nil
end

#copy_mode_key_down(event_ptr, pane) ⇒ Object 



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# File 'lib/echoes/gui.rb', line 1318

def copy_mode_key_down(event_ptr, pane)
  chars_ns = ObjC::MSG_PTR.call(event_ptr, ObjC.sel('characters'))
  chars = ObjC.to_ruby_string(chars_ns)
  flags = ObjC::MSG_RET_L.call(event_ptr, ObjC.sel('modifierFlags'))

  key = if (flags & ObjC::NSEventModifierFlagControl) != 0
          (chars[0].ord & 0x1F).chr
        else
          chars
        end

  result = pane.copy_mode.handle_key(key)
  case result
  when :exit
    pane.copy_mode = nil
  when :yank
    text = pane.copy_mode.selected_text
    unless text.empty?
      pb = ObjC::MSG_PTR.call(ObjC.cls('NSPasteboard'), ObjC.sel('generalPasteboard'))
      ObjC::MSG_PTR.call(pb, ObjC.sel('clearContents'))
      ObjC::MSG_PTR_2.call(pb, ObjC.sel('setString:forType:'), ObjC.nsstring(text), ObjC::NSPasteboardTypeString)
    end
    pane.copy_mode.exit
    pane.copy_mode = nil
  end
  ObjC::MSG_VOID_I.call(@view, ObjC.sel('setNeedsDisplay:'), 1)
end

#create_fonts ⇒ Object 



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# File 'lib/echoes/gui.rb', line 341

def create_fonts
  @font = ObjC.retain(create_nsfont(@font_size))
  @bold_font = ObjC.retain(create_bold_nsfont(@font))
  @font_y_offset_cache = {}
  update_cell_metrics
end

#create_tab(editor_file: nil) ⇒ Object 



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# File 'lib/echoes/gui.rb', line 74

def create_tab(editor_file: nil)
  cwd = self.class.pane_local_cwd(current_tab&.active_pane)
  tab = Tab.new(command: @command, rows: @rows, cols: @cols, cwd: cwd,
                embedded: embedded_mode?, editor_file: editor_file)
  tab.title = editor_file ? File.basename(editor_file) : "Tab #{@tabs.size + 1}"
  tab.panes.each { |pane| wire_screen_handlers(pane.screen) }
  @tabs << tab
  @active_tab = @tabs.size - 1
end

#create_view_class ⇒ Object 



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# File 'lib/echoes/gui.rb', line 348

def create_view_class
  gui = self

  @draw_rect_closure = Fiddle::Closure::BlockCaller.new(
    Fiddle::TYPE_VOID,
    [Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP,
     Fiddle::TYPE_DOUBLE, Fiddle::TYPE_DOUBLE, Fiddle::TYPE_DOUBLE, Fiddle::TYPE_DOUBLE]
  ) do |_self, _cmd, x, y, w, h|
    gui.activate_for_view(_self); gui.draw_rect(y, y + h)
  rescue => e
    gui.log_crash(e, context: 'draw_rect')
  end

  @key_down_closure = Fiddle::Closure::BlockCaller.new(
    Fiddle::TYPE_VOID,
    [Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP]
  ) do |_self, _cmd, event|
    gui.activate_for_view(_self); gui.key_down(event)
  rescue => e
    gui.log_crash(e, context: 'key_down')
  end

  @accepts_fr_closure = Fiddle::Closure::BlockCaller.new(
    Fiddle::TYPE_INT,
    [Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP]
  ) { |_self, _cmd| 1 }

  @timer_fired_closure = Fiddle::Closure::BlockCaller.new(
    Fiddle::TYPE_VOID,
    [Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP]
  ) do |_self, _cmd, _timer|
    gui.timer_fired
  rescue => e
    gui.log_crash(e, context: 'timer_fired')
  end

  @is_flipped_closure = Fiddle::Closure::BlockCaller.new(
    Fiddle::TYPE_INT,
    [Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP]
  ) { |_self, _cmd| 1 }

  # AppKit calls this when it (re)builds cursor rects for the
  # view — on key-window changes, view-resize, and explicit
  # `[window invalidateCursorRectsForView:view]` calls. Register
  # an I-beam over the entire content area so the mouse cursor
  # turns into a text-selection bar when hovering over the grid.
  @reset_cursor_rects_closure = Fiddle::Closure::BlockCaller.new(
    Fiddle::TYPE_VOID,
    [Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP]
  ) do |_self, _cmd|
    ibeam = ObjC::MSG_PTR.call(ObjC.cls('NSCursor'), ObjC.sel('IBeamCursor'))
    w = (@cell_width || 8.0)  * ((@cols || 80) + 1)
    h = (@cell_height || 16.0) * ((@rows || 24) + 1) + tab_bar_height
    ObjC::MSG_VOID_RECT_1.call(_self, ObjC.sel('addCursorRect:cursor:'),
                               0.0, 0.0, w, h, ibeam)
  rescue => e
    gui.log_crash(e, context: 'resetCursorRects')
  end

  @scroll_wheel_closure = Fiddle::Closure::BlockCaller.new(
    Fiddle::TYPE_VOID,
    [Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP]
  ) do |_self, _cmd, event|
    gui.activate_for_view(_self); gui.scroll_wheel(event)
  rescue => e
    gui.log_crash(e, context: 'scroll_wheel')
  end

  @mouse_down_closure = Fiddle::Closure::BlockCaller.new(
    Fiddle::TYPE_VOID,
    [Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP]
  ) do |_self, _cmd, event|
    gui.activate_for_view(_self); gui.mouse_down(event)
  rescue => e
    gui.log_crash(e, context: 'mouse_down')
  end

  @mouse_dragged_closure = Fiddle::Closure::BlockCaller.new(
    Fiddle::TYPE_VOID,
    [Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP]
  ) do |_self, _cmd, event|
    gui.activate_for_view(_self); gui.mouse_dragged(event)
  rescue => e
    gui.log_crash(e, context: 'mouse_dragged')
  end

  @mouse_moved_closure = Fiddle::Closure::BlockCaller.new(
    Fiddle::TYPE_VOID,
    [Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP]
  ) do |_self, _cmd, event|
    gui.activate_for_view(_self); gui.mouse_moved(event)
  rescue => e
    gui.log_crash(e, context: 'mouse_moved')
  end

  @mouse_up_closure = Fiddle::Closure::BlockCaller.new(
    Fiddle::TYPE_VOID,
    [Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP]
  ) do |_self, _cmd, event|
    gui.activate_for_view(_self); gui.mouse_up(event)
  rescue => e
    gui.log_crash(e, context: 'mouse_up')
  end

  @right_mouse_down_closure = Fiddle::Closure::BlockCaller.new(
    Fiddle::TYPE_VOID,
    [Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP]
  ) do |_self, _cmd, event|
    gui.activate_for_view(_self); gui.right_mouse_down(event)
  rescue => e
    gui.log_crash(e, context: 'right_mouse_down')
  end

  @right_mouse_dragged_closure = Fiddle::Closure::BlockCaller.new(
    Fiddle::TYPE_VOID,
    [Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP]
  ) do |_self, _cmd, event|
    gui.activate_for_view(_self); gui.right_mouse_dragged(event)
  rescue => e
    gui.log_crash(e, context: 'right_mouse_dragged')
  end

  @right_mouse_up_closure = Fiddle::Closure::BlockCaller.new(
    Fiddle::TYPE_VOID,
    [Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP]
  ) do |_self, _cmd, event|
    gui.activate_for_view(_self); gui.right_mouse_up(event)
  rescue => e
    gui.log_crash(e, context: 'right_mouse_up')
  end

  @other_mouse_down_closure = Fiddle::Closure::BlockCaller.new(
    Fiddle::TYPE_VOID,
    [Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP]
  ) do |_self, _cmd, event|
    gui.activate_for_view(_self); gui.other_mouse_down(event)
  rescue => e
    gui.log_crash(e, context: 'other_mouse_down')
  end

  @other_mouse_dragged_closure = Fiddle::Closure::BlockCaller.new(
    Fiddle::TYPE_VOID,
    [Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP]
  ) do |_self, _cmd, event|
    gui.activate_for_view(_self); gui.other_mouse_dragged(event)
  rescue => e
    gui.log_crash(e, context: 'other_mouse_dragged')
  end

  @other_mouse_up_closure = Fiddle::Closure::BlockCaller.new(
    Fiddle::TYPE_VOID,
    [Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP]
  ) do |_self, _cmd, event|
    gui.activate_for_view(_self); gui.other_mouse_up(event)
  rescue => e
    gui.log_crash(e, context: 'other_mouse_up')
  end

  @perform_key_equiv_closure = Fiddle::Closure::BlockCaller.new(
    Fiddle::TYPE_INT,
    [Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP]
  ) { |_self, _cmd, event| gui.activate_for_view(_self); gui.perform_key_equivalent(event) }

  # Get NSView's original setFrameSize: IMP so we can call super
  nsview_cls = ObjC.cls('NSView')
  super_imp = ObjC::GetMethodImpl.call(nsview_cls, ObjC.sel('setFrameSize:'))
  @super_set_frame_size = Fiddle::Function.new(super_imp, [ObjC::P, ObjC::P, ObjC::D, ObjC::D], ObjC::V)

  @set_frame_size_closure = Fiddle::Closure::BlockCaller.new(
    Fiddle::TYPE_VOID,
    [Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP, Fiddle::TYPE_DOUBLE, Fiddle::TYPE_DOUBLE]
  ) do |_self, _cmd, w, h|
    @super_set_frame_size.call(_self, _cmd, w, h)
    gui.activate_for_view(_self)
    gui.handle_resize(w, h)
  rescue => e
    gui.log_crash(e, context: 'set_frame_size')
  end

  # NSTextInputClient protocol closures for IME support
  @insert_text_closure = Fiddle::Closure::BlockCaller.new(
    Fiddle::TYPE_VOID,
    [Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP, Fiddle::TYPE_LONG, Fiddle::TYPE_LONG]
  ) do |_self, _cmd, text, _rep_loc, _rep_len|
    gui.activate_for_view(_self); gui.ime_insert_text(text)
  rescue => e
    gui.log_crash(e, context: 'insert_text')
  end

  @insert_text_simple_closure = Fiddle::Closure::BlockCaller.new(
    Fiddle::TYPE_VOID,
    [Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP]
  ) do |_self, _cmd, text|
    gui.activate_for_view(_self); gui.ime_insert_text(text)
  rescue => e
    gui.log_crash(e, context: 'insert_text_simple')
  end

  @do_command_closure = Fiddle::Closure::BlockCaller.new(
    Fiddle::TYPE_VOID,
    [Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP]
  ) do |_self, _cmd, _selector|
    gui.activate_for_view(_self); gui.ime_do_command
  rescue => e
    gui.log_crash(e, context: 'do_command')
  end

  @set_marked_text_closure = Fiddle::Closure::BlockCaller.new(
    Fiddle::TYPE_VOID,
    [Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP,
     Fiddle::TYPE_LONG, Fiddle::TYPE_LONG, Fiddle::TYPE_LONG, Fiddle::TYPE_LONG]
  ) do |_self, _cmd, text, sel_loc, sel_len, _rep_loc, _rep_len|
    gui.activate_for_view(_self); gui.ime_set_marked_text(text, sel_loc, sel_len)
  rescue => e
    gui.log_crash(e, context: 'set_marked_text')
  end

  @unmark_text_closure = Fiddle::Closure::BlockCaller.new(
    Fiddle::TYPE_VOID,
    [Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP]
  ) do |_self, _cmd|
    gui.activate_for_view(_self); gui.ime_unmark_text
  rescue => e
    gui.log_crash(e, context: 'unmark_text')
  end

  @has_marked_text_closure = Fiddle::Closure::BlockCaller.new(
    Fiddle::TYPE_INT,
    [Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP]
  ) { |_self, _cmd| gui.ime_has_marked_text }

  @marked_range_closure = Fiddle::Closure::BlockCaller.new(
    Fiddle::TYPE_LONG,
    [Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP]
  ) { |_self, _cmd| gui.ime_marked_range_location }

  @selected_range_closure = Fiddle::Closure::BlockCaller.new(
    Fiddle::TYPE_LONG,
    [Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP]
  ) { |_self, _cmd| 0x7FFFFFFFFFFFFFFF } # NSNotFound

  @valid_attrs_closure = Fiddle::Closure::BlockCaller.new(
    Fiddle::TYPE_VOIDP,
    [Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP]
  ) { |_self, _cmd| ObjC::MSG_PTR.call(ObjC.cls('NSArray'), ObjC.sel('array')) }

  @attr_substring_closure = Fiddle::Closure::BlockCaller.new(
    Fiddle::TYPE_VOIDP,
    [Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP, Fiddle::TYPE_LONG, Fiddle::TYPE_LONG, Fiddle::TYPE_VOIDP]
  ) { |_self, _cmd, _loc, _len, _actual| Fiddle::Pointer.new(0) }

  @first_rect_closure = Fiddle::Closure::BlockCaller.new(
    Fiddle::TYPE_DOUBLE,
    [Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP, Fiddle::TYPE_LONG, Fiddle::TYPE_LONG, Fiddle::TYPE_VOIDP]
  ) { |_self, _cmd, _loc, _len, _actual| 0.0 }

  @char_index_closure = Fiddle::Closure::BlockCaller.new(
    Fiddle::TYPE_LONG,
    [Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP, Fiddle::TYPE_DOUBLE, Fiddle::TYPE_DOUBLE]
  ) { |_self, _cmd, _x, _y| 0x7FFFFFFFFFFFFFFF } # NSNotFound

  menu_action = proc { |action_block|
    Fiddle::Closure::BlockCaller.new(
      Fiddle::TYPE_VOID,
      [Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP]
    ) do |_self, _cmd, _sender|
      gui.activate_for_view(_self); action_block.call
    rescue => e
      gui.log_crash(e, context: 'menu_action')
    end
  }

  @show_about_closure = menu_action.call(-> { show_about_panel })
  @new_window_closure = menu_action.call(-> { open_new_window })
  @new_tab_closure = menu_action.call(-> {
    create_tab
    ObjC::MSG_VOID_I.call(@view, ObjC.sel('setNeedsDisplay:'), 1)
  })
  @edit_file_closure = menu_action.call(-> {
    path = prompt_for_file_to_edit
    if path
      create_tab(editor_file: path)
      ObjC::MSG_VOID_I.call(@view, ObjC.sel('setNeedsDisplay:'), 1)
    end
  })
  @close_tab_closure = menu_action.call(-> {
    close_tab(@active_tab)
    ObjC::MSG_VOID_I.call(@view, ObjC.sel('setNeedsDisplay:'), 1)
  })
  @copy_closure = menu_action.call(-> { copy_to_clipboard })
  @paste_closure = menu_action.call(-> { paste_from_clipboard })
  @select_all_closure = menu_action.call(-> { select_all })
  @increase_font_closure = menu_action.call(-> { update_font(@font_size + 1.0) })
  @decrease_font_closure = menu_action.call(-> { update_font(@font_size - 1.0) if @font_size > 4.0 })
  @reset_font_closure = menu_action.call(-> {
    Preferences.delete(:font_size)
    update_font(Echoes.config.font_size, persist: false)
  })
  @toggle_find_closure = menu_action.call(-> {
    toggle_search
    ObjC::MSG_VOID_I.call(@view, ObjC.sel('setNeedsDisplay:'), 1)
  })
  @find_next_closure = menu_action.call(-> {
    if @search_mode && !@search_matches.empty?
      search_next
      ObjC::MSG_VOID_I.call(@view, ObjC.sel('setNeedsDisplay:'), 1)
    end
  })
  @find_prev_closure = menu_action.call(-> {
    if @search_mode && !@search_matches.empty?
      search_prev
      ObjC::MSG_VOID_I.call(@view, ObjC.sel('setNeedsDisplay:'), 1)
    end
  })
  @prev_tab_closure = menu_action.call(-> {
    @active_tab = (@active_tab - 1) % @tabs.size
    ObjC::MSG_VOID_I.call(@view, ObjC.sel('setNeedsDisplay:'), 1)
  })
  @next_tab_closure = menu_action.call(-> {
    @active_tab = (@active_tab + 1) % @tabs.size
    ObjC::MSG_VOID_I.call(@view, ObjC.sel('setNeedsDisplay:'), 1)
  })
  @split_right_closure = menu_action.call(-> {
    tab = current_tab
    new_pane = tab.split_vertical
    wire_screen_handlers(new_pane.screen)
    ObjC::MSG_VOID_I.call(@view, ObjC.sel('setNeedsDisplay:'), 1)
  })
  @split_down_closure = menu_action.call(-> {
    tab = current_tab
    new_pane = tab.split_horizontal
    wire_screen_handlers(new_pane.screen)
    ObjC::MSG_VOID_I.call(@view, ObjC.sel('setNeedsDisplay:'), 1)
  })
  @close_pane_closure = menu_action.call(-> {
    tab = current_tab
    if tab.pane_tree.single_pane?
      close_tab(@active_tab)
    else
      tab.close_active_pane
    end
    ObjC::MSG_VOID_I.call(@view, ObjC.sel('setNeedsDisplay:'), 1)
  })
  @select_next_pane_closure = menu_action.call(-> {
    current_tab.next_pane
    ObjC::MSG_VOID_I.call(@view, ObjC.sel('setNeedsDisplay:'), 1)
  })
  @select_prev_pane_closure = menu_action.call(-> {
    current_tab.prev_pane
    ObjC::MSG_VOID_I.call(@view, ObjC.sel('setNeedsDisplay:'), 1)
  })
  # NSMenu items dispatched from the tab-completion popup. Unlike the
  # main-menu actions, the completion picker needs the sender so we
  # can read its tag (= candidate index); menu_action's no-arg
  # convention isn't a fit, so wire it manually.
  @completion_picked_closure = Fiddle::Closure::BlockCaller.new(
    Fiddle::TYPE_VOID,
    [Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP]
  ) do |_self, _cmd, sender|
    gui.activate_for_view(_self); gui.completion_picked(sender)
  rescue => e
    gui.log_crash(e, context: 'completionPicked')
  end

  @toggle_pointer_closure = menu_action.call(-> {
    # NSCursor's hide/unhide are reference-counted; track state so
    # repeated invocations toggle cleanly. We don't use
    # `setHiddenUntilMouseMoves:` because the user wants explicit
    # control (mouse-move shouldn't undo a deliberate hide).
    if @pointer_hidden
      ObjC::MSG_VOID.call(ObjC.cls('NSCursor'), ObjC.sel('unhide'))
      @pointer_hidden = false
    else
      ObjC::MSG_VOID.call(ObjC.cls('NSCursor'), ObjC.sel('hide'))
      @pointer_hidden = true
    end
  })

  @toggle_copy_mode_closure = menu_action.call(-> {
    pane = current_tab.active_pane
    if pane.copy_mode&.active
      pane.copy_mode.exit
      pane.copy_mode = nil
    else
      pane.copy_mode = CopyMode.new(pane.screen)
      pane.copy_mode.enter
    end
    ObjC::MSG_VOID_I.call(@view, ObjC.sel('setNeedsDisplay:'), 1)
  })

  @dragging_entered_closure = Fiddle::Closure::BlockCaller.new(
    Fiddle::TYPE_LONG,
    [Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP]
  ) { |_self, _cmd, _sender| 1 }  # NSDragOperationCopy

  @perform_drag_closure = Fiddle::Closure::BlockCaller.new(
    Fiddle::TYPE_INT,
    [Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP]
  ) do |_self, _cmd, sender|
    gui.activate_for_view(_self); gui.perform_drag_operation(sender) ? 1 : 0
  rescue => e
    gui.log_crash(e, context: 'performDragOperation')
    0
  end

  @focus_gained_closure = Fiddle::Closure::BlockCaller.new(
    Fiddle::TYPE_VOID,
    [Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP]
  ) { |_self, _cmd, _notification| gui.activate_for_view(_self); gui.window_focus_changed(true) }

  @focus_lost_closure = Fiddle::Closure::BlockCaller.new(
    Fiddle::TYPE_VOID,
    [Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP, Fiddle::TYPE_VOIDP]
  ) { |_self, _cmd, _notification| gui.activate_for_view(_self); gui.window_focus_changed(false) }

  @view_class = ObjC.define_class('EchoesTerminalView', 'NSView', {
    'drawRect:'             => ['v@:{CGRect=dddd}', @draw_rect_closure],
    'keyDown:'              => ['v@:@', @key_down_closure],
    'acceptsFirstResponder' => ['c@:', @accepts_fr_closure],
    'timerFired:'           => ['v@:@', @timer_fired_closure],
    'isFlipped'             => ['c@:', @is_flipped_closure],
    'resetCursorRects'      => ['v@:', @reset_cursor_rects_closure],
    'scrollWheel:'          => ['v@:@', @scroll_wheel_closure],
    'mouseDown:'            => ['v@:@', @mouse_down_closure],
    'mouseDragged:'         => ['v@:@', @mouse_dragged_closure],
    'mouseMoved:'           => ['v@:@', @mouse_moved_closure],
    'mouseUp:'              => ['v@:@', @mouse_up_closure],
    'rightMouseDown:'       => ['v@:@', @right_mouse_down_closure],
    'rightMouseDragged:'    => ['v@:@', @right_mouse_dragged_closure],
    'rightMouseUp:'         => ['v@:@', @right_mouse_up_closure],
    'otherMouseDown:'       => ['v@:@', @other_mouse_down_closure],
    'otherMouseDragged:'    => ['v@:@', @other_mouse_dragged_closure],
    'otherMouseUp:'         => ['v@:@', @other_mouse_up_closure],
    'performKeyEquivalent:' => ['c@:@', @perform_key_equiv_closure],
    'setFrameSize:'         => ['v@:{CGSize=dd}', @set_frame_size_closure],
    'windowDidBecomeKey:'   => ['v@:@', @focus_gained_closure],
    'windowDidResignKey:'   => ['v@:@', @focus_lost_closure],
    'showAbout:'             => ['v@:@', @show_about_closure],
    'newWindow:'             => ['v@:@', @new_window_closure],
    'newTab:'               => ['v@:@', @new_tab_closure],
    'editFile:'             => ['v@:@', @edit_file_closure],
    'closeTab:'             => ['v@:@', @close_tab_closure],
    'copy:'                 => ['v@:@', @copy_closure],
    'paste:'                => ['v@:@', @paste_closure],
    'selectAll:'            => ['v@:@', @select_all_closure],
    'increaseFontSize:'     => ['v@:@', @increase_font_closure],
    'decreaseFontSize:'     => ['v@:@', @decrease_font_closure],
    'resetFontSize:'        => ['v@:@', @reset_font_closure],
    'toggleFind:'           => ['v@:@', @toggle_find_closure],
    'findNext:'             => ['v@:@', @find_next_closure],
    'findPrevious:'         => ['v@:@', @find_prev_closure],
    'showPreviousTab:'      => ['v@:@', @prev_tab_closure],
    'showNextTab:'          => ['v@:@', @next_tab_closure],
    'splitRight:'           => ['v@:@', @split_right_closure],
    'splitDown:'            => ['v@:@', @split_down_closure],
    'closePane:'            => ['v@:@', @close_pane_closure],
    'selectNextPane:'       => ['v@:@', @select_next_pane_closure],
    'selectPreviousPane:'   => ['v@:@', @select_prev_pane_closure],
    'toggleCopyMode:'       => ['v@:@', @toggle_copy_mode_closure],
    'togglePointer:'        => ['v@:@', @toggle_pointer_closure],
    'completionPicked:'     => ['v@:@', @completion_picked_closure],
    # NSTextInputClient protocol methods for IME
    'insertText:replacementRange:'                      => ['v@:@{_NSRange=QQ}', @insert_text_closure],
    'insertText:'                                       => ['v@:@', @insert_text_simple_closure],
    'doCommandBySelector:'                              => ['v@::', @do_command_closure],
    'setMarkedText:selectedRange:replacementRange:'     => ['v@:@{_NSRange=QQ}{_NSRange=QQ}', @set_marked_text_closure],
    'unmarkText'                                        => ['v@:', @unmark_text_closure],
    'hasMarkedText'                                     => ['c@:', @has_marked_text_closure],
    'markedRange'                                       => ['{_NSRange=QQ}@:', @marked_range_closure],
    'selectedRange'                                     => ['{_NSRange=QQ}@:', @selected_range_closure],
    'validAttributesForMarkedText'                      => ['@@:', @valid_attrs_closure],
    'attributedSubstringForProposedRange:actualRange:'  => ['@@:{_NSRange=QQ}^{_NSRange=QQ}', @attr_substring_closure],
    'firstRectForCharacterRange:actualRange:'           => ['{CGRect={CGPoint=dd}{CGSize=dd}}@:{_NSRange=QQ}^{_NSRange=QQ}', @first_rect_closure],
    'characterIndexForPoint:'                           => ['Q@:{CGPoint=dd}', @char_index_closure],
    'draggingEntered:'                                  => ['Q@:@', @dragging_entered_closure],
    'performDragOperation:'                             => ['c@:@', @perform_drag_closure],
  })

  # Add NSTextInputClient protocol conformance for IME
  protocol = ObjC::GetProtocol.call('NSTextInputClient')
  ObjC::AddProtocol.call(@view_class, protocol) unless protocol.null?
end

#current_tab ⇒ Object 



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# File 'lib/echoes/gui.rb', line 120

def current_tab
  @tabs[@active_tab]
end

#draw_active_pane_border(tab, pane_rects, gy_off) ⇒ Object 



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# File 'lib/echoes/gui.rb', line 1206

def draw_active_pane_border(tab, pane_rects, gy_off)
  active_rect = pane_rects.find { |r| r[:pane] == tab.active_pane }
  return unless active_rect

  ObjC::MSG_VOID.call(@active_pane_border_color, ObjC.sel('setFill'))

  px = active_rect[:x] * @cell_width
  py = gy_off + active_rect[:y] * @cell_height
  pw = active_rect[:w] * @cell_width
  ph = active_rect[:h] * @cell_height

  # Top border
  ObjC::NSRectFill.call(px, py, pw, 2.0)
  # Bottom border
  ObjC::NSRectFill.call(px, py + ph - 2.0, pw, 2.0)
  # Left border
  ObjC::NSRectFill.call(px, py, 2.0, ph)
  # Right border
  ObjC::NSRectFill.call(px + pw - 2.0, py, 2.0, ph)
end

#draw_pane_content(pane, px, py, dirty_min_y, dirty_max_y, is_active) ⇒ Object 



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# File 'lib/echoes/gui.rb', line 920

def draw_pane_content(pane, px, py, dirty_min_y, dirty_max_y, is_active)
  screen = pane.screen
  scrollback = screen.scrollback
  visible_start = scrollback.size - pane.scroll_offset
  pane_rows = screen.rows
  pane_cols = screen.cols

  copy_mode = pane.copy_mode

  # Per-pane gradient background (set via OSC 7772 ;bg-gradient).
  # Drawn before any cells so cell-level bg colors paint on top.
  draw_pane_background(screen.background, px, py, pane_cols, pane_rows) if screen.background
  draw_pane_fills(screen.bg_fills, px, py, pane_cols, pane_rows) if screen.bg_fills && !screen.bg_fills.empty?

  pane_rows.times do |r|
    y = py + r * @cell_height
    next if y + @cell_height < dirty_min_y || y > dirty_max_y
    src = visible_start + r
    row = if src < scrollback.size
            scrollback[src]
          elsif src - scrollback.size < screen.grid.size
            screen.grid[src - scrollback.size]
          end
    next unless row

    row.each_with_index do |cell, c|
      next if cell.width == 0
      next if cell.multicell == :cont

      fg_val = cell.fg
      bg_val = cell.bg
      default_fg = @default_fg
      default_bg = @default_bg
      if cell.inverse
        fg_val, bg_val = bg_val, fg_val
        default_fg, default_bg = default_bg, default_fg
      end

      fg_color = resolve_color(fg_val, default_fg)
      bg_color = resolve_color(bg_val, default_bg)

      if cell.bold && fg_val.is_a?(Integer) && fg_val < 8
        fg_color = @colors[fg_val + 8]
      end

      has_bg = !bg_val.nil? || cell.inverse

      selected = is_active && cell_selected?(src, c)
      is_match = is_active && @search_mode && search_match_at?(src, c)
      is_current_match = is_active && @search_mode && current_search_match_at?(src, c)

      # Copy mode selection highlight
      if copy_mode&.active && copy_mode.selecting?
        sel_start, sel_end = [copy_mode.selection_start, copy_mode.selection_end].sort_by { |p| [p[0], p[1]] }
        cm_abs_row = scrollback.size + r - pane.scroll_offset
        if cm_abs_row >= scrollback.size + sel_start[0] && cm_abs_row <= scrollback.size + sel_end[0]
          cm_row = cm_abs_row - scrollback.size
          if cm_row == sel_start[0] && cm_row == sel_end[0]
            selected = c >= sel_start[1] && c <= sel_end[1]
          elsif cm_row == sel_start[0]
            selected = c >= sel_start[1]
          elsif cm_row == sel_end[0]
            selected = c <= sel_end[1]
          else
            selected = true
          end
        end
      end

      if cell.multicell.is_a?(Hash)
        mc = cell.multicell
        x = px + c * @cell_width
        block_w = mc[:cols] * @cell_width
        block_h = mc[:rows] * @cell_height

        if selected
          ObjC::MSG_VOID.call(@selection_color, ObjC.sel('setFill'))
          ObjC::NSRectFill.call(x, y, block_w, block_h)
        elsif has_bg
          ObjC::MSG_VOID.call(bg_color, ObjC.sel('setFill'))
          ObjC::NSRectFill.call(x, y, block_w, block_h)
        end

        if mc[:sixel]
          draw_sixel_image(mc[:sixel], x, y, block_w, block_h)
          next
        end

        next if cell.char == " " && !has_bg

        # Per OSC 66 spec, n=/d= define a fraction *of* the scale.
        # Effective glyph size is `s × n/d`. The reserved block
        # stays at the full s×s*width — n=/d= shrink (or grow) the
        # glyph within that block, paired with v=/h= for placement.
        # Example: `s=2:n=1:d=2:v=2;●` reserves 2×2 cells and draws
        # a 1-cell ● centered vertically inside it.
        effective_scale = mc[:scale].to_f
        if mc[:frac_d] > 0 && mc[:frac_n] > 0
          effective_scale *= mc[:frac_n].to_f / mc[:frac_d]
        end
        scaled_font = ObjC.retain(create_nsfont(@font_size * effective_scale, family: mc[:family]))
        if cell.bold
          regular = scaled_font
          scaled_font = ObjC.retain(create_bold_nsfont(regular))
          ObjC.release(regular)
        end

        draw_attrs = {
          ObjC::NSFontAttributeName => scaled_font,
          ObjC::NSForegroundColorAttributeName => fg_color,
        }
        if cell.underline
          draw_attrs[ObjC::NSUnderlineStyleAttributeName] = ObjC.nsnumber_int(1)
        end
        if cell.strikethrough
          draw_attrs[ObjC::NSStrikethroughStyleAttributeName] = ObjC.nsnumber_int(1)
        end
        ns_attrs = ObjC.nsdict(draw_attrs)
        ns_char = cached_nsstring(cell.char)

        text_w = ObjC::MSG_RET_D_1.call(ns_char, ObjC.sel('sizeWithAttributes:'), ns_attrs)

        draw_x = case mc[:halign]
                  when 1 then x + block_w - text_w
                  when 2 then x + (block_w - text_w) / 2.0
                  else x
                  end

        scaled_ascender = ObjC::MSG_RET_D.call(scaled_font, ObjC.sel('ascender'))
        scaled_descender = ObjC::MSG_RET_D.call(scaled_font, ObjC.sel('descender'))
        scaled_leading = ObjC::MSG_RET_D.call(scaled_font, ObjC.sel('leading'))
        text_h = scaled_ascender - scaled_descender + scaled_leading

        draw_y = case mc[:valign]
                  when 1 then y + block_h - text_h
                  when 2 then y + (block_h - text_h) / 2.0
                  else y
                  end

        ObjC::MSG_VOID_PT_1.call(ns_char, ObjC.sel('drawAtPoint:withAttributes:'), draw_x, draw_y, ns_attrs)
        ObjC.release(scaled_font)
      else
        x = px + c * @cell_width
        cell_w = cell.width == 2 ? @cell_width * 2 : @cell_width

        if is_current_match
          ObjC::MSG_VOID.call(@search_current_color, ObjC.sel('setFill'))
          ObjC::NSRectFill.call(x, y, cell_w, @cell_height)
        elsif is_match
          ObjC::MSG_VOID.call(@search_match_color, ObjC.sel('setFill'))
          ObjC::NSRectFill.call(x, y, cell_w, @cell_height)
        elsif selected
          ObjC::MSG_VOID.call(@selection_color, ObjC.sel('setFill'))
          ObjC::NSRectFill.call(x, y, cell_w, @cell_height)
        elsif has_bg
          ObjC::MSG_VOID.call(bg_color, ObjC.sel('setFill'))
          ObjC::NSRectFill.call(x, y, cell_w, @cell_height)
        end

        next if cell.char == " " && !has_bg && !selected && !is_match

        base_font = cell.bold ? @bold_font : font_for_char(cell.char)
        if cell.italic
          base_font = create_italic_nsfont(base_font)
        end
        if cell.concealed || (cell.blink && !@cursor_blink_on)
          fg_color = bg_color
        elsif cell.faint
          fg_color = make_color_with_alpha(fg_color, 0.5)
        end
        attrs = {
          ObjC::NSFontAttributeName => base_font,
          ObjC::NSForegroundColorAttributeName => fg_color,
        }
        if cell.underline
          attrs[ObjC::NSUnderlineStyleAttributeName] = ObjC.nsnumber_int(1)
        end
        if cell.strikethrough
          attrs[ObjC::NSStrikethroughStyleAttributeName] = ObjC.nsnumber_int(1)
        end
        ns_attrs = ObjC.nsdict(attrs)
        ns_char = cached_nsstring(cell.char)
        dy = y + y_offset_for_font(base_font)
        ObjC::MSG_VOID_PT_1.call(ns_char, ObjC.sel('drawAtPoint:withAttributes:'), x, dy, ns_attrs)
      end
    end
  end

  # Draw cursor or copy mode cursor
  if copy_mode&.active
    # Copy mode cursor (inverse block)
    cm_row = copy_mode.cursor_row
    if cm_row >= 0 && cm_row < pane_rows
      cx = px + copy_mode.cursor_col * @cell_width
      cy = py + cm_row * @cell_height
      ObjC::MSG_VOID.call(@copy_mode_cursor_color, ObjC.sel('setFill'))
      ObjC::NSRectFill.call(cx, cy, @cell_width, @cell_height)
    end
  elsif pane.scroll_offset == 0 && screen.cursor.visible
    style = screen.cursor_style
    blink = style.odd? || style == 0
    cx = px + screen.cursor.col * @cell_width
    cy = py + screen.cursor.row * @cell_height

    if @window_focused
      # Active window: filled cursor (blinking if requested)
      if !blink || (is_active ? @cursor_blink_on : true)
        cursor_color = is_active ? make_color(*Echoes.config.cursor_color) : make_color(0.5, 0.5, 0.5, 0.3)
        ObjC::MSG_VOID.call(cursor_color, ObjC.sel('setFill'))
        case style
        when 3, 4 # underline
          ObjC::NSRectFill.call(cx, cy + @cell_height - 2.0, @cell_width, 2.0)
        when 5, 6 # bar
          ObjC::NSRectFill.call(cx, cy, 2.0, @cell_height)
        else # block (0, 1, 2)
          ObjC::NSRectFill.call(cx, cy, @cell_width, @cell_height)
          # Draw character under cursor with inverted colors
          if screen.cursor.row < pane_rows && screen.cursor.col < pane_cols
            cell = screen.grid[screen.cursor.row][screen.cursor.col]
            if cell.char != ' '
              inv_fg = @default_bg
              cursor_font = cell.bold ? @bold_font : font_for_char(cell.char)
              ns_attrs = ObjC.nsdict({
                ObjC::NSFontAttributeName => cursor_font,
                ObjC::NSForegroundColorAttributeName => inv_fg,
              })
              ns_char = cached_nsstring(cell.char)
              dy = cy + y_offset_for_font(cursor_font)
              ObjC::MSG_VOID_PT_1.call(ns_char, ObjC.sel('drawAtPoint:withAttributes:'), cx, dy, ns_attrs)
            end
          end
        end
      end
    else
      # Inactive window: hollow square outline (no blinking)
      ObjC::MSG_VOID.call(make_color(*Echoes.config.cursor_color), ObjC.sel('setFill'))
      ObjC::NSRectFill.call(cx, cy, @cell_width, 1.0)                       # top
      ObjC::NSRectFill.call(cx, cy + @cell_height - 1.0, @cell_width, 1.0)  # bottom
      ObjC::NSRectFill.call(cx, cy, 1.0, @cell_height)                      # left
      ObjC::NSRectFill.call(cx + @cell_width - 1.0, cy, 1.0, @cell_height)  # right
    end
  end

  # Draw marked text (IME composition) at cursor position (active pane only)
  if is_active && @marked_text && pane.scroll_offset == 0
    mx = px + screen.cursor.col * @cell_width
    my = py + screen.cursor.row * @cell_height
    marked_width = @marked_text.each_char.sum { |c| c.ord > 0x7F ? @cell_width * 2 : @cell_width }

    ime_bg = make_color(0.2, 0.2, 0.35)
    ObjC::MSG_VOID.call(ime_bg, ObjC.sel('setFill'))
    ObjC::NSRectFill.call(mx, my, marked_width, @cell_height)

    ns_str = ObjC.nsstring(@marked_text)
    ns_attrs = ObjC.nsdict({
      ObjC::NSFontAttributeName => @font,
      ObjC::NSForegroundColorAttributeName => make_color(1.0, 1.0, 1.0),
      ObjC::NSUnderlineStyleAttributeName => ObjC.nsnumber_int(1),
    })
    ObjC::MSG_VOID_PT_1.call(ns_str, ObjC.sel('drawAtPoint:withAttributes:'), mx, my, ns_attrs)
  end
end

#draw_pane_dividers(pane_rects, gy_off) ⇒ Object 



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# File 'lib/echoes/gui.rb', line 1183

def draw_pane_dividers(pane_rects, gy_off)
  return if pane_rects.size <= 1

  ObjC::MSG_VOID.call(@pane_divider_color, ObjC.sel('setFill'))

  pane_rects.each do |rect|
    px = rect[:x] * @cell_width
    py = gy_off + rect[:y] * @cell_height
    pw = rect[:w] * @cell_width
    ph = rect[:h] * @cell_height

    # Draw right edge divider (if not at the far right)
    if rect[:x] + rect[:w] < @cols
      ObjC::NSRectFill.call(px + pw - 0.5, py, 1.0, ph)
    end

    # Draw bottom edge divider (if not at the very bottom)
    if rect[:y] + rect[:h] < @rows
      ObjC::NSRectFill.call(px, py + ph - 0.5, pw, 1.0)
    end
  end
end

#draw_rect(dirty_min_y = 0.0, dirty_max_y = Float::INFINITY) ⇒ Object

— Callbacks —



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# File 'lib/echoes/gui.rb', line 850

def draw_rect(dirty_min_y = 0.0, dirty_max_y = Float::INFINITY)
  # Autorelease pool to prevent temporary object accumulation
  pool = ObjC::MSG_PTR.call(ObjC.cls('NSAutoreleasePool'), ObjC.sel('alloc'))
  pool = ObjC::MSG_PTR.call(pool, ObjC.sel('init'))

  tab = current_tab
  unless tab
    ObjC::MSG_VOID.call(pool, ObjC.sel('drain'))
    return
  end
  tbh = tab_bar_height
  gy_off = grid_y_offset

  # Fill dirty region background
  ObjC::MSG_VOID.call(@default_bg, ObjC.sel('setFill'))
  ObjC::NSRectFill.call(0.0, dirty_min_y, @cell_width * (@cols + 1), dirty_max_y - dirty_min_y)

  # Draw tab bar if it intersects the dirty region
  if tbh > 0
    tby = tab_bar_y
    if dirty_min_y < tby + tbh && dirty_max_y > tby
      draw_tab_bar(tbh, tby)
    end
  end

  # Draw all panes
  pane_rects = tab.pane_tree.layout(0, 0, @cols, @rows)
  pane_rects.each do |rect|
    pane = rect[:pane]
    px = rect[:x] * @cell_width
    py = gy_off + rect[:y] * @cell_height
    is_active = (pane == tab.active_pane)

    draw_pane_content(pane, px, py, dirty_min_y, dirty_max_y, is_active)
  end

  # Draw pane dividers and active pane border
  if !tab.pane_tree.single_pane?
    draw_pane_dividers(pane_rects, gy_off)
    draw_active_pane_border(tab, pane_rects, gy_off)
  end

  # Visual bell flash
  if @bell_flash > 0
    flash_color = make_color_with_alpha(make_color(1.0, 1.0, 1.0), 0.15)
    ObjC::MSG_VOID.call(flash_color, ObjC.sel('setFill'))
    ObjC::NSRectFill.call(0.0, gy_off, @cols * @cell_width, @rows * @cell_height)
  end

  # Draw search bar
  if @search_mode
    bar_h = @cell_height + 4.0
    bar_y = gy_off + @rows * @cell_height
    bar_bg = make_color(0.2, 0.2, 0.2)
    ObjC::MSG_VOID.call(bar_bg, ObjC.sel('setFill'))
    ObjC::NSRectFill.call(0.0, bar_y, @cols * @cell_width, bar_h)

    match_info = @search_matches.empty? ? "" : " [#{@search_index + 1}/#{@search_matches.size}]"
    label = "Find: #{@search_query}_#{match_info}"
    ns_str = ObjC.nsstring(label)
    ns_attrs = ObjC.nsdict({
      ObjC::NSFontAttributeName => @font,
      ObjC::NSForegroundColorAttributeName => make_color(1.0, 1.0, 1.0),
    })
    ObjC::MSG_VOID_PT_1.call(ns_str, ObjC.sel('drawAtPoint:withAttributes:'), 4.0, bar_y + 2.0, ns_attrs)
  end

  ObjC::MSG_VOID.call(pool, ObjC.sel('drain'))
end

#embedded_mode? ⇒ Boolean

Phase 1 launch flag for the in-process Rubish embedding. Setting ECHOES_EMBED=1 in the environment routes new Tab/Pane creation through Echoes::EmbeddedShell instead of PTY.spawn.

Returns:

  • (Boolean) 


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# File 'lib/echoes/gui.rb', line 127

def embedded_mode?
  ENV['ECHOES_EMBED'] == '1'
end

#grid_y_offset ⇒ Object 



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# File 'lib/echoes/gui.rb', line 210

def grid_y_offset
  Echoes.config.tab_position == :bottom ? 0.0 : tab_bar_height
end

#handle_resize(w, h) ⇒ Object 



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# File 'lib/echoes/gui.rb', line 1733

def handle_resize(w, h)
  tbh = tab_bar_height
  grid_height = h - tbh

  new_cols = (w / @cell_width).to_i
  new_rows = (grid_height / @cell_height).to_i
  new_cols = 1 if new_cols < 1
  new_rows = 1 if new_rows < 1

  return if new_rows == @rows && new_cols == @cols

  @rows = new_rows
  @cols = new_cols
  @tabs.each { |tab| tab.resize(@rows, @cols) }
end

#ime_do_command ⇒ Object 



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# File 'lib/echoes/gui.rb', line 1362

def ime_do_command
  return unless @current_event

  tab = current_tab
  return unless tab
  pane = tab.active_pane
  return unless pane
  event_ptr = @current_event
  flags = ObjC::MSG_RET_L.call(event_ptr, ObjC.sel('modifierFlags'))
  chars_ns = ObjC::MSG_PTR.call(event_ptr, ObjC.sel('characters'))
  chars = ObjC.to_ruby_string(chars_ns)
  chars_ns2 = ObjC::MSG_PTR.call(event_ptr, ObjC.sel('charactersIgnoringModifiers'))
  chars2 = ObjC.to_ruby_string(chars_ns2)

  numpad = (flags & ObjC::NSEventModifierFlagNumericPad) != 0
  actual = chars.empty? ? chars2 : chars
  pane.write_input(map_special_keys(actual, pane.screen.application_cursor_keys?, app_keypad: numpad && pane.screen.application_keypad))
rescue Errno::EIO, IOError
  close_tab(@active_tab)
end

#ime_has_marked_text ⇒ Object 



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# File 'lib/echoes/gui.rb', line 1400

def ime_has_marked_text
  @marked_text ? 1 : 0
end

#ime_insert_text(text_ptr) ⇒ Object

— IME (Input Method Editor) callbacks —



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# File 'lib/echoes/gui.rb', line 1348

def ime_insert_text(text_ptr)
  text = nsstring_from_input(text_ptr)
  @marked_text = nil
  return if text.empty?

  tab = current_tab
  return unless tab
  pane = tab.active_pane
  return unless pane
  pane.write_input(text)
rescue Errno::EIO, IOError
  close_tab(@active_tab)
end

#ime_marked_range_location ⇒ Object 



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# File 'lib/echoes/gui.rb', line 1404

def ime_marked_range_location
  @marked_text ? 0 : 0x7FFFFFFFFFFFFFFF # NSNotFound
end

#ime_set_marked_text(text_ptr, _sel_loc, _sel_len) ⇒ Object 



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# File 'lib/echoes/gui.rb', line 1383

def ime_set_marked_text(text_ptr, _sel_loc, _sel_len)
  text = nsstring_from_input(text_ptr)

  if text.empty?
    @marked_text = nil
  else
    @marked_text = text
  end

  ObjC::MSG_VOID_I.call(@view, ObjC.sel('setNeedsDisplay:'), 1)
end

#ime_unmark_text ⇒ Object 



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# File 'lib/echoes/gui.rb', line 1395

def ime_unmark_text
  @marked_text = nil
  ObjC::MSG_VOID_I.call(@view, ObjC.sel('setNeedsDisplay:'), 1)
end

#invalidate_dirty_rows(dirty_rows) ⇒ Object 



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# File 'lib/echoes/gui.rb', line 1505

def invalidate_dirty_rows(dirty_rows)
  gy_off = grid_y_offset
  width = @cell_width * @cols
  dirty_rows.each do |r|
    next if r < 0 || r >= @rows
    y = gy_off + r * @cell_height
    ObjC::MSG_VOID_RECT.call(@view, ObjC.sel('setNeedsDisplayInRect:'), 0.0, y, width, @cell_height)
  end
end

#key_down(event_ptr) ⇒ Object 



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# File 'lib/echoes/gui.rb', line 1231

def key_down(event_ptr)
  if @search_mode
    search_key_down(event_ptr)
    return
  end

  tab = current_tab
  return unless tab
  pane = tab.active_pane
  return unless pane

  # Copy mode intercepts all keys
  if pane.copy_mode&.active
    copy_mode_key_down(event_ptr, pane)
    return
  end

  @selection_anchor = nil
  @selection_end = nil

  flags = ObjC::MSG_RET_L.call(event_ptr, ObjC.sel('modifierFlags'))
  chars_ns = ObjC::MSG_PTR.call(event_ptr, ObjC.sel('charactersIgnoringModifiers'))
  chars = ObjC.to_ruby_string(chars_ns)
  return if chars.empty?

  # Snap-to-bottom on most key events. Exception: Cmd+Shift+Up/Down
  # is the OSC 133 jump-to-prompt nav, which sets @scroll_offset
  # itself — clobbering it here would defeat repeated presses.
  is_prompt_nav = (flags & (ObjC::NSEventModifierFlagCommand | ObjC::NSEventModifierFlagShift)) ==
                  (ObjC::NSEventModifierFlagCommand | ObjC::NSEventModifierFlagShift) &&
                  (chars == "\u{F700}" || chars == "\u{F701}")
  unless is_prompt_nav
    pane.scroll_offset = 0
    pane.scroll_accum = 0.0
  end

  # Viewer panes (rvim-backed) consume keys directly via
  # `pane.handle_key`, not via a pty. Without this branch the
  # legacy PTY path below tries to write keystrokes to a
  # non-existent pty fd, so vim never sees the input.
  if pane.editor?
    pane.handle_key(chars: chars, flags: flags)
    ObjC::MSG_VOID_I.call(@view, ObjC.sel('setNeedsDisplay:'), 1)
    return
  end

  # Embedded-shell panes don't speak the byte-stream / escape-code
  # protocol; they have an in-Echoes line editor that submits
  # finished lines to a Rubish::REPL via direct method calls.
  if pane.embedded?
    # Tab with multiple completion candidates: show a native NSMenu
    # popup at the cursor cell instead of letting Pane print the
    # candidates inline. Single-candidate completion stays inline.
    if chars == "\t" && !pane.embedded_shell.running?
      req = pane.completion_request
      if req && req[:candidates].size > 1
        show_completion_popup(pane, req)
        ObjC::MSG_VOID_I.call(@view, ObjC.sel('setNeedsDisplay:'), 1)
        return
      end
    end
    pane.handle_key(chars: chars, flags: flags)
    ObjC::MSG_VOID_I.call(@view, ObjC.sel('setNeedsDisplay:'), 1)
    return
  end

  mod = modifier_param(flags)

  if chars == "\u{19}"  # NSBackTabCharacter (Shift+Tab on macOS)
    pane.write_input("\e[Z")
  elsif mod > 1 && (seq = map_modified_key(chars, mod))
    pane.write_input(seq)
  elsif (flags & ObjC::NSEventModifierFlagControl) != 0
    ctrl_char = (chars[0].ord & 0x1F).chr
    pane.write_input(ctrl_char)
  elsif (flags & ObjC::NSEventModifierFlagOption) != 0
    pane.write_input("\e#{chars}")
  else
    # Route through input method for IME support
    @current_event = event_ptr
    arr = ObjC::MSG_PTR_1.call(ObjC.cls('NSArray'), ObjC.sel('arrayWithObject:'), event_ptr)
    ObjC::MSG_VOID_1.call(@view, ObjC.sel('interpretKeyEvents:'), arr)
  end
rescue Errno::EIO, IOError
  close_tab(@active_tab)
end

#log_crash(exception, context: nil) ⇒ Object 



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# File 'lib/echoes/gui.rb', line 12

def log_crash(exception, context: nil)
  dir = File.dirname(CRASH_LOG)
  Dir.mkdir(dir) unless Dir.exist?(dir)
  File.open(CRASH_LOG, 'a') do |f|
    f.puts "--- #{Time.now} ---"
    f.puts "Context: #{context}" if context
    f.puts "#{exception.class}: #{exception.message}"
    exception.backtrace&.each { |line| f.puts "  #{line}" }
    f.puts
  end
  STDERR.puts "echoes: #{exception.class}: #{exception.message} (logged to #{CRASH_LOG})"
rescue # log_crash itself must never raise
end

#mouse_down(event_ptr) ⇒ Object 



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# File 'lib/echoes/gui.rb', line 1542

def mouse_down(event_ptr)
  tab = current_tab
  return unless tab
  pos = grid_position(event_ptr)
  click_count = ObjC::MSG_RET_L.call(event_ptr, ObjC.sel('clickCount'))

  flags = ObjC::MSG_RET_L.call(event_ptr, ObjC.sel('modifierFlags'))

  if pos.nil?
    # Click in tab bar
    click_x, = event_location(event_ptr)
    tab_w = (@cell_width * @cols) / @tabs.size
    clicked_tab = (click_x / tab_w).to_i.clamp(0, @tabs.size - 1)
    @active_tab = clicked_tab
  elsif (flags & ObjC::NSEventModifierFlagCommand) != 0 && pos
    # Cmd+click: open hyperlink/URL if the cell has one; otherwise
    # in an embedded pane, recall the command at this prompt row
    # into the input buffer (using OSC 133 marks as the index).
    abs_row, col = pos
    url = hyperlink_at(tab, abs_row, col)
    if url
      open_url(url)
    else
      pane = tab.active_pane
      if pane.embedded?
        mark = pane.screen.find_command_mark_at_row(abs_row)
        if mark && mark[:command_text] && !pane.embedded_shell.running?
          pane.recall_command(mark[:command_text])
        end
      end
    end
  elsif tab.screen.mouse_tracking != :off
    row, col = pos
    send_mouse_event(tab, 0, col, row)  # button 0 = left press
  elsif click_count >= 3
    # Triple-click: if the clicked row falls inside a command's
    # OSC 133 output region, select the whole region (semantic
    # copy). Otherwise fall back to selecting just this one line.
    abs_row, = pos
    region = tab.active_pane&.screen&.output_region_for_row(abs_row)
    if region
      start_row, end_row = region
      @selection_anchor = [start_row, 0]
      @selection_end    = [end_row, @cols - 1]
    else
      @selection_anchor = [abs_row, 0]
      @selection_end    = [abs_row, @cols - 1]
    end
  elsif click_count == 2
    # Double-click: select word
    abs_row, col = pos
    row_data = row_at(tab, abs_row)
    if row_data
      bounds = word_boundaries_in_row(row_data, col)
      if bounds
        @selection_anchor = [abs_row, bounds[0]]
        @selection_end = [abs_row, bounds[1]]
      end
    end
  else
    # Single click: start drag selection
    @selection_anchor = pos
    @selection_end = nil
  end

  ObjC::MSG_VOID_I.call(@view, ObjC.sel('setNeedsDisplay:'), 1)
end

#mouse_dragged(event_ptr) ⇒ Object 



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# File 'lib/echoes/gui.rb', line 1610

def mouse_dragged(event_ptr)
  tab = current_tab
  return unless tab
  pos = grid_position(event_ptr)
  return unless pos

  if tab.screen.mouse_tracking == :button_event || tab.screen.mouse_tracking == :any_event
    row, col = pos
    send_mouse_event(tab, 32, col, row)  # 32 = left drag (button 0 + 32)
  else
    @selection_end = pos
  end
  ObjC::MSG_VOID_I.call(@view, ObjC.sel('setNeedsDisplay:'), 1)
end

#mouse_moved(event_ptr) ⇒ Object

Pointer-was-hidden + user-shakes-the-mouse path: when the user has hidden the cursor (Cmd+Shift+P) and then can’t find it, the OS’s own “shake to locate” feature briefly enlarges the system cursor — but ours is hidden, so there’s nothing to enlarge. We detect the shake ourselves and unhide so the user gets a cursor to look at. After this fires, @pointer_hidden is reset so re-hiding requires another deliberate Cmd+Shift+P.



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# File 'lib/echoes/gui.rb', line 1643

def mouse_moved(event_ptr)
  return unless @pointer_hidden
  @shake_detector ||= ShakeDetector.new
  x, y = event_location(event_ptr)
  t = Process.clock_gettime(Process::CLOCK_MONOTONIC)
  if @shake_detector.observe(t, x, y)
    ObjC::MSG_VOID.call(ObjC.cls('NSCursor'), ObjC.sel('unhide'))
    @pointer_hidden = false
    @shake_detector.reset
  end
end

#mouse_up(event_ptr) ⇒ Object 



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# File 'lib/echoes/gui.rb', line 1625

def mouse_up(event_ptr)
  tab = current_tab
  return unless tab
  return if tab.screen.mouse_tracking == :off || tab.screen.mouse_tracking == :x10

  pos = grid_position(event_ptr)
  return unless pos
  row, col = pos
  send_mouse_event(tab, 3, col, row, release: true)  # 3 = release
end

#other_mouse_down(event_ptr) ⇒ Object 



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# File 'lib/echoes/gui.rb', line 1694

def other_mouse_down(event_ptr)
  tab = current_tab
  return unless tab
  return if tab.screen.mouse_tracking == :off

  pos = grid_position(event_ptr)
  return unless pos
  row, col = pos
  send_mouse_event(tab, 1, col, row)  # button 1 = middle press
rescue Errno::EIO, IOError
  close_tab(@active_tab)
end

#other_mouse_dragged(event_ptr) ⇒ Object 



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# File 'lib/echoes/gui.rb', line 1707

def other_mouse_dragged(event_ptr)
  tab = current_tab
  return unless tab
  return unless tab.screen.mouse_tracking == :button_event || tab.screen.mouse_tracking == :any_event

  pos = grid_position(event_ptr)
  return unless pos
  row, col = pos
  send_mouse_event(tab, 33, col, row)  # 33 = middle drag (button 1 + 32)
rescue Errno::EIO, IOError
  close_tab(@active_tab)
end

#other_mouse_up(event_ptr) ⇒ Object 



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# File 'lib/echoes/gui.rb', line 1720

def other_mouse_up(event_ptr)
  tab = current_tab
  return unless tab
  return if tab.screen.mouse_tracking == :off || tab.screen.mouse_tracking == :x10

  pos = grid_position(event_ptr)
  return unless pos
  row, col = pos
  send_mouse_event(tab, 3, col, row, release: true)
rescue Errno::EIO, IOError
  close_tab(@active_tab)
end

#perform_drag_operation(sender) ⇒ Object 



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# File 'lib/echoes/gui.rb', line 1786

def perform_drag_operation(sender)
  pb = ObjC::MSG_PTR.call(sender, ObjC.sel('draggingPasteboard'))
  str = self.class.file_paths_from_pasteboard(pb)
  return false if str.nil?

  pane = current_tab.active_pane
  if pane.screen.bracketed_paste_mode?
    pane.write_input("\e[200~")
    pane.write_input(str)
    pane.write_input("\e[201~")
  else
    pane.write_input(str)
  end
  true
rescue Errno::EIO, IOError
  false
end

#perform_key_equivalent(event_ptr) ⇒ Object 



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# File 'lib/echoes/gui.rb', line 1227

def perform_key_equivalent(event_ptr)
  0
end

#right_mouse_down(event_ptr) ⇒ Object 



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# File 'lib/echoes/gui.rb', line 1655

def right_mouse_down(event_ptr)
  tab = current_tab
  return unless tab
  return if tab.screen.mouse_tracking == :off

  pos = grid_position(event_ptr)
  return unless pos
  row, col = pos
  send_mouse_event(tab, 2, col, row)  # button 2 = right press
rescue Errno::EIO, IOError
  close_tab(@active_tab)
end

#right_mouse_dragged(event_ptr) ⇒ Object 



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# File 'lib/echoes/gui.rb', line 1668

def right_mouse_dragged(event_ptr)
  tab = current_tab
  return unless tab
  return unless tab.screen.mouse_tracking == :button_event || tab.screen.mouse_tracking == :any_event

  pos = grid_position(event_ptr)
  return unless pos
  row, col = pos
  send_mouse_event(tab, 34, col, row)  # 34 = right drag (button 2 + 32)
rescue Errno::EIO, IOError
  close_tab(@active_tab)
end

#right_mouse_up(event_ptr) ⇒ Object 



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# File 'lib/echoes/gui.rb', line 1681

def right_mouse_up(event_ptr)
  tab = current_tab
  return unless tab
  return if tab.screen.mouse_tracking == :off || tab.screen.mouse_tracking == :x10

  pos = grid_position(event_ptr)
  return unless pos
  row, col = pos
  send_mouse_event(tab, 3, col, row, release: true)
rescue Errno::EIO, IOError
  close_tab(@active_tab)
end

#run ⇒ Object 



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# File 'lib/echoes/gui.rb', line 65

def run
  setup_app
  create_fonts
  create_view_class
  open_new_window
  setup_timer
  start_app
end

#scroll_wheel(event_ptr) ⇒ Object 



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# File 'lib/echoes/gui.rb', line 1515

def scroll_wheel(event_ptr)
  tab = current_tab
  return unless tab
  screen = tab.screen

  if screen.mouse_tracking != :off
    delta = ObjC::MSG_RET_D.call(event_ptr, ObjC.sel('deltaY'))
    pos = grid_position(event_ptr)
    return unless pos
    row, col = pos
    button = delta > 0 ? 64 : 65  # 64=scroll up, 65=scroll down
    send_mouse_event(tab, button, col, row)
    return
  end

  delta = ObjC::MSG_RET_D.call(event_ptr, ObjC.sel('deltaY'))
  tab.scroll_accum += delta

  if tab.scroll_accum.abs >= 1.0
    lines = tab.scroll_accum.to_i
    tab.scroll_offset += lines
    tab.scroll_offset = tab.scroll_offset.clamp(0, tab.screen.scrollback.size)
    tab.scroll_accum -= lines
    ObjC::MSG_VOID_I.call(@view, ObjC.sel('setNeedsDisplay:'), 1)
  end
end

#setup_app ⇒ Object 



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# File 'lib/echoes/gui.rb', line 218

def setup_app
  @app = ObjC::MSG_PTR.call(ObjC.cls('NSApplication'), ObjC.sel('sharedApplication'))
  ObjC::MSG_VOID_I.call(@app, ObjC.sel('setActivationPolicy:'), 0)
  # Disable native NSWindow tabbing so Cmd+N always spawns a real
  # new window. Default macOS behavior in fullscreen is to fold
  # additional NSWindows into the same OS-level tabbed window —
  # but Echoes already has its own tab abstraction (with its own
  # tab bar and @tabs array per window), so that promotion creates
  # a phantom OS tab the Echoes side has no record of, leaving a
  # second clickable tab that switches to nothing.
  ObjC::MSG_VOID_I.call(ObjC.cls('NSWindow'), ObjC.sel('setAllowsAutomaticWindowTabbing:'), 0)
  setup_menu_bar
end

#setup_menu_bar ⇒ Object 



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# File 'lib/echoes/gui.rb', line 232

def setup_menu_bar
  main_menu = create_menu('')

  # Application menu
  app_menu = create_menu('Echoes')
  add_menu_item(app_menu, "About Echoes", 'showAbout:', '')
  add_separator(app_menu)
  add_menu_item(app_menu, "Hide Echoes", 'hide:', 'h')
  add_menu_item(app_menu, "Hide Others", 'hideOtherApplications:', '')
  add_menu_item(app_menu, "Show All", 'unhideAllApplications:', '')
  add_separator(app_menu)
  add_menu_item(app_menu, "Quit Echoes", 'terminate:', 'q')
  add_submenu(main_menu, app_menu, 'Echoes')

  # Edit menu
  edit_menu = create_menu('Edit')
  add_menu_item(edit_menu, "Copy", 'copy:', 'c')
  add_menu_item(edit_menu, "Paste", 'paste:', 'v')
  add_menu_item(edit_menu, "Select All", 'selectAll:', 'a')
  add_submenu(main_menu, edit_menu, 'Edit')

  # View menu
  view_menu = create_menu('View')
  add_menu_item(view_menu, "Bigger", 'increaseFontSize:', '=')
  add_menu_item(view_menu, "Bigger", 'increaseFontSize:', '+')
  add_menu_item(view_menu, "Smaller", 'decreaseFontSize:', '-')
  add_menu_item(view_menu, "Reset Font Size", 'resetFontSize:', '0')
  add_separator(view_menu)
  add_menu_item(view_menu, "Find", 'toggleFind:', 'f')
  add_menu_item(view_menu, "Find Next", 'findNext:', 'g')
  add_menu_item(view_menu, "Find Previous", 'findPrevious:', 'g',
                modifiers: ObjC::NSEventModifierFlagCommand | ObjC::NSEventModifierFlagShift)
  add_separator(view_menu)
  add_menu_item(view_menu, "Hide Mouse Pointer", 'togglePointer:', 'p',
                modifiers: ObjC::NSEventModifierFlagCommand | ObjC::NSEventModifierFlagShift)
  add_submenu(main_menu, view_menu, 'View')

  # Window menu
  window_menu = create_menu('Window')
  add_menu_item(window_menu, "Minimize", 'miniaturize:', 'm')
  add_menu_item(window_menu, "Zoom", 'zoom:', '')
  add_menu_item(window_menu, "Enter Full Screen", 'toggleFullScreen:', 'f',
                modifiers: ObjC::NSEventModifierFlagCommand | ObjC::NSEventModifierFlagControl)
  add_separator(window_menu)
  add_menu_item(window_menu, "Show Previous Tab", 'showPreviousTab:', '{',
                modifiers: ObjC::NSEventModifierFlagCommand | ObjC::NSEventModifierFlagShift)
  add_menu_item(window_menu, "Show Next Tab", 'showNextTab:', '}',
                modifiers: ObjC::NSEventModifierFlagCommand | ObjC::NSEventModifierFlagShift)
  add_separator(window_menu)
  add_menu_item(window_menu, "Select Next Pane", 'selectNextPane:', ']')
  add_menu_item(window_menu, "Select Previous Pane", 'selectPreviousPane:', '[')
  add_separator(window_menu)
  add_menu_item(window_menu, "Toggle Copy Mode", 'toggleCopyMode:', 'c',
                modifiers: ObjC::NSEventModifierFlagCommand | ObjC::NSEventModifierFlagShift)
  add_separator(window_menu)
  # Register the menu as NSApplication's "windows menu"; AppKit
  # auto-populates it with one item per NSWindow (using the window's
  # title) and handles activation when an item is selected.
  ObjC::MSG_VOID_1.call(@app, ObjC.sel('setWindowsMenu:'), window_menu)
  add_submenu(main_menu, window_menu, 'Window')

  # Shell menu
  shell_menu = create_menu('Shell')
  add_menu_item(shell_menu, "New Window", 'newWindow:', 'n')
  add_menu_item(shell_menu, "New Tab", 'newTab:', 't')
  add_menu_item(shell_menu, "Close Tab", 'closeTab:', 'w')
  add_separator(shell_menu)
  add_menu_item(shell_menu, "Edit File…", 'editFile:', 'e',
                modifiers: ObjC::NSEventModifierFlagCommand | ObjC::NSEventModifierFlagShift)
  add_separator(shell_menu)
  add_menu_item(shell_menu, "Split Right", 'splitRight:', 'd')
  add_menu_item(shell_menu, "Split Down", 'splitDown:', 'd',
                modifiers: ObjC::NSEventModifierFlagCommand | ObjC::NSEventModifierFlagShift)
  add_menu_item(shell_menu, "Close Pane", 'closePane:', 'w',
                modifiers: ObjC::NSEventModifierFlagCommand | ObjC::NSEventModifierFlagShift)
  add_submenu(main_menu, shell_menu, 'Shell')

  ObjC::MSG_VOID_1.call(@app, ObjC.sel('setMainMenu:'), main_menu)
end

#setup_timer ⇒ Object 



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# File 'lib/echoes/gui.rb', line 831

def setup_timer
  @timer_view_id = @view.to_i
  @timer = ObjC::MSG_PTR_D_P_P_P_I.call(
    ObjC.cls('NSTimer'),
    ObjC.sel('scheduledTimerWithTimeInterval:target:selector:userInfo:repeats:'),
    1.0 / 60.0,
    @view,
    ObjC.sel('timerFired:'),
    Fiddle::Pointer.new(0),
    1
  )
end

#start_app ⇒ Object 



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# File 'lib/echoes/gui.rb', line 844

def start_app
  ObjC::MSG_VOID.call(@app, ObjC.sel('run'))
end

#tab_bar_height ⇒ Object 



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# File 'lib/echoes/gui.rb', line 206

def tab_bar_height
  @tabs.size > 1 ? @cell_height : 0.0
end

#tab_bar_y ⇒ Object 



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# File 'lib/echoes/gui.rb', line 214

def tab_bar_y
  Echoes.config.tab_position == :bottom ? @cell_height * @rows : 0.0
end

#timer_fired ⇒ Object 



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# File 'lib/echoes/gui.rb', line 1408

def timer_fired
  save_window_state

  @cursor_blink_counter += 1
  blink_toggled = false
  if @cursor_blink_counter >= 30
    @cursor_blink_counter = 0
    @cursor_blink_on = !@cursor_blink_on
    blink_toggled = true
  end

  @window_states.each do |ws|
    load_window_state(ws)
    timer_fired_for_window(ws, blink_toggled)
  end
end

#update_font(new_size, persist: true) ⇒ Object 



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# File 'lib/echoes/gui.rb', line 1762

def update_font(new_size, persist: true)
  @font_size = new_size
  Preferences.set_double(:font_size, new_size) if persist
  old_font = @font
  old_bold = @bold_font
  @font = ObjC.retain(create_nsfont(@font_size))
  @bold_font = ObjC.retain(create_bold_nsfont(@font))
  ObjC.release(old_font) if old_font
  ObjC.release(old_bold) if old_bold
  @font_cache.each_value { |f| ObjC.release(f) unless f.to_i == old_font&.to_i }
  @font_cache = {}
  @font_y_offset_cache = {}
  update_cell_metrics

  @window_states.each do |ws|
    load_window_state(ws)
    win_width = @cell_width * @cols
    win_height = tab_bar_height + @cell_height * @rows
    ObjC::MSG_VOID_2D.call(@window, ObjC.sel('setContentSize:'), win_width, win_height)
    ObjC::MSG_VOID_I.call(@view, ObjC.sel('setNeedsDisplay:'), 1)
    save_window_state
  end
end

#window_focus_changed(focused) ⇒ Object 



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# File 'lib/echoes/gui.rb', line 1749

def window_focus_changed(focused)
  @window_focused = focused
  save_window_state
  ObjC::MSG_VOID_I.call(@view, ObjC.sel('setNeedsDisplay:'), 1) if @view

  tab = current_tab
  pane = tab&.active_pane
  return unless pane&.screen&.focus_reporting?

  seq = focused ? "\e[I" : "\e[O"
  pane.write_input(seq)
end