Class: VMAgui

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ VMAgui

Returns a new instance of VMAgui.



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# File 'lib/vimamsa/gui.rb', line 184

def initialize()
  @two_column = false
  @active_column = 1
  @show_overlay = true
  @da = nil
  @sws = []
  @buffers = {}
  @view = nil
  @buf1 = nil
  @img_resizer_active = false
  @windows = {}
  @app = nil
  # imgproc = proc {
  # GLib::Idle.add(proc {
  # if !buf.images.empty?
  # vma.gui.scale_all_images

  # w = Gtk::Window.new(:toplevel)
  # w.set_default_size(1, 1)
  # w.show_all
  # Thread.new { sleep 0.1; w.destroy }
  # end

  # false
  # })
  # }
  # @delex = DelayExecutioner.new(1, imgproc)
end

Instance Attribute Details

#app ⇒ Object (readonly)

Returns the value of attribute app.



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# File 'lib/vimamsa/gui.rb', line 182

def app
  @app
end

#buf1 ⇒ Object

Returns the value of attribute buf1.



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# File 'lib/vimamsa/gui.rb', line 181

def buf1
  @buf1
end

#buffers ⇒ Object

Returns the value of attribute buffers.



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# File 'lib/vimamsa/gui.rb', line 181

def buffers
  @buffers
end

#delex ⇒ Object

Returns the value of attribute delex.



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# File 'lib/vimamsa/gui.rb', line 181

def delex
  @delex
end

#overlay ⇒ Object

Returns the value of attribute overlay.



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# File 'lib/vimamsa/gui.rb', line 181

def overlay
  @overlay
end

#statnfo ⇒ Object

Returns the value of attribute statnfo.



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# File 'lib/vimamsa/gui.rb', line 181

def statnfo
  @statnfo
end

#subtitle ⇒ Object (readonly)

Returns the value of attribute subtitle.



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# File 'lib/vimamsa/gui.rb', line 182

def subtitle
  @subtitle
end

#sw ⇒ Object

Returns the value of attribute sw.



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# File 'lib/vimamsa/gui.rb', line 181

def sw
  @sw
end

#sw1 ⇒ Object

Returns the value of attribute sw1.



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# File 'lib/vimamsa/gui.rb', line 181

def sw1
  @sw1
end

#sw2 ⇒ Object

Returns the value of attribute sw2.



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# File 'lib/vimamsa/gui.rb', line 181

def sw2
  @sw2
end

#sws ⇒ Object

Returns the value of attribute sws.



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# File 'lib/vimamsa/gui.rb', line 181

def sws
  @sws
end

#two_c ⇒ Object

Returns the value of attribute two_c.



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# File 'lib/vimamsa/gui.rb', line 181

def two_c
  @two_c
end

#two_column ⇒ Object (readonly)

Returns the value of attribute two_column.



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# File 'lib/vimamsa/gui.rb', line 182

def two_column
  @two_column
end

#view ⇒ Object

Returns the value of attribute view.



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# File 'lib/vimamsa/gui.rb', line 181

def view
  @view
end

#window ⇒ Object

Returns the value of attribute window.



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# File 'lib/vimamsa/gui.rb', line 181

def window
  @window
end

#windows ⇒ Object (readonly)

Returns the value of attribute windows.



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# File 'lib/vimamsa/gui.rb', line 182

def windows
  @windows
end

Instance Method Details

#add_to_minibuf(msg) ⇒ Object 



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# File 'lib/vimamsa/gui.rb', line 359

def add_to_minibuf(msg)
  # return #TODO:gtk4
  startiter = @minibuf.buffer.get_iter_at(:offset => 0)
  @minibuf.buffer.insert(startiter, "#{msg}\n")
  @minibuf.signal_emit("move-cursor", Gtk::MovementStep.new(:PAGES), -1, false)
end

#clear_overlay ⇒ Object 



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# File 'lib/vimamsa/gui.rb', line 266

def clear_overlay()
  if @da != nil
    # @overlay.remove(@da)
    @overlay.remove_overlay(@da)
  end
end

#current_view ⇒ Object 



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# File 'lib/vimamsa/gui.rb', line 855

def current_view
  return @sw.child
end

#debug_idle_func ⇒ Object 



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# File 'lib/vimamsa/gui.rb', line 480

def debug_idle_func
  return false if @shutdown == true
  if Time.now - @last_debug_idle > 1
    @last_debug_idle = Time.now
    # puts "DEBUG IDLE #{Time.now}"
    # @view.check_controllers
  end

  ctrl_fn = File.expand_path("~/.vimamsa/ripl_ctrl")
  # Allows to debug in case keyboard handling is lost
  if File.exist?(ctrl_fn)
    File.delete(ctrl_fn)
    start_ripl
  end

  sleep 0.02
  return true
end

#delay_scale ⇒ Object 



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# File 'lib/vimamsa/gui.rb', line 228

def delay_scale()
  if Time.now - @dtime > 2.0
  end
end

#end_overlay_draw ⇒ Object 



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# File 'lib/vimamsa/gui.rb', line 282

def end_overlay_draw()
  @da.show
end

#ensure_cursor_drawn ⇒ Object 



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# File 'lib/vimamsa/gui.rb', line 939

def ensure_cursor_drawn
  # view.place_cursor_onscreen #TODO: needed?
  view.draw_cursor
end

#handle_deltas ⇒ Object 



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

def handle_deltas()
  view.delete_cursor_char
  while d = buf.deltas.shift
    pos = d[0]
    op = d[1]
    num = d[2]
    txt = d[3]
    if op == DELETE
      startiter = @buf1.get_iter_at(:offset => pos)
      enditer = @buf1.get_iter_at(:offset => pos + num)
      @buf1.delete(startiter, enditer)
    elsif op == INSERT
      startiter = @buf1.get_iter_at(:offset => pos)
      @buf1.insert(startiter, txt)
    end
  end
end

#handle_image_resize ⇒ Object

TODO:gtk4



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# File 'lib/vimamsa/gui.rb', line 243

def handle_image_resize #TODO:gtk4
  return if @img_resizer_active == true
  @dtime = Time.now

  $gcrw = 0
  vma.gui.window.signal_connect "configure-event" do |widget, cr|
    if $gcrw != cr.width
      @delex.run
    end
    $gcrw = cr.width
    false
  end

  @img_resizer_active = true
end

#idle_ensure_cursor_drawn ⇒ Object 



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# File 'lib/vimamsa/gui.rb', line 935

def idle_ensure_cursor_drawn
  run_as_idle proc { self.ensure_cursor_drawn }
end

#idle_set_size ⇒ Object 



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# File 'lib/vimamsa/gui.rb', line 575

def idle_set_size()
  # Need to wait for a while to window to be maximized to get correct @window.width
  @window.maximize
  wait_for_resize(@window)
  # Set new size as half of the screeen
  width = @window.width / 2
  height = @window.height - 5
  width = 600 if width < 600
  height = 600 if height < 600

  #Minimum size:
  @window.set_size_request(600, 600)
  @window.set_default_size(width, height)
  debug "size #{[width, height]}", 2
  @window.unmaximize

  #set_default_size doesn't always have effect if run immediately
  wait_for_resize(@window)
  @window.set_default_size(width, height)

  return false
end

#init_header_bar ⇒ Object 



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# File 'lib/vimamsa/gui.rb', line 395

def init_header_bar()
  header = Gtk::HeaderBar.new
  @header = header
  header.show_close_button = true
  # header.title = ""#TODO:gtk4
  # header.has_subtitle = true#TODO:gtk4
  header.subtitle = ""

  # icon = Gio::ThemedIcon.new("mail-send-receive-symbolic")
  # icon = Gio::ThemedIcon.new("document-open-symbolic")
  # icon = Gio::ThemedIcon.new("dialog-password")

  #edit-redo edit-paste edit-find-replace edit-undo edit-find edit-cut edit-copy
  #document-open document-save document-save-as document-properties document-new
  # document-revert-symbolic
  #

  #TODO:
  # button = Gtk::Button.new
  # icon = Gio::ThemedIcon.new("open-menu-symbolic")
  # image = Gtk::Image.new(:icon => icon, :size => :button)
  # button.add(image)
  # header.pack_end(button)

  button = Gtk::Button.new
  icon = Gio::ThemedIcon.new("document-open-symbolic")
  image = Gtk::Image.new(:icon => icon, :size => :button)
  button.add(image)
  header.pack_end(button)

  button.signal_connect "clicked" do |_widget|
    open_file_dialog
  end

  button = Gtk::Button.new
  icon = Gio::ThemedIcon.new("document-save-symbolic")
  image = Gtk::Image.new(:icon => icon, :size => :button)
  button.add(image)
  header.pack_end(button)
  button.signal_connect "clicked" do |_widget|
    buf.save
  end

  button = Gtk::Button.new
  icon = Gio::ThemedIcon.new("document-new-symbolic")
  image = Gtk::Image.new(:icon => icon, :size => :button)
  button.add(image)
  header.pack_end(button)
  button.signal_connect "clicked" do |_widget|
    create_new_file
  end

  box = Gtk::Box.new(:horizontal, 0)
  box.style_context.add_class("linked")

  button = Gtk::Button.new
  image = Gtk::Image.new(:icon_name => "pan-start-symbolic", :size => :button)
  button.add(image)
  box.add(button)
  button.signal_connect "clicked" do |_widget|
    history_switch_backwards
  end

  button = Gtk::Button.new
  image = Gtk::Image.new(:icon_name => "pan-end-symbolic", :size => :button)
  button.add(image)
  box.add(button)
  button.signal_connect "clicked" do |_widget|
    history_switch_forwards
  end

  button = Gtk::Button.new
  icon = Gio::ThemedIcon.new("window-close-symbolic")
  image = Gtk::Image.new(:icon => icon, :size => :button)
  button.add(image)
  box.add(button)
  button.signal_connect "clicked" do |_widget|
    bufs.close_current_buffer
  end

  header.pack_start(box)
  @window.titlebar = header
  # @window.add(Gtk::TextView.new)
end

#init_menu ⇒ Object 



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# File 'lib/vimamsa/gui.rb', line 744

def init_menu
  Vimamsa::Menu.new(@menubar, @app)
end

#init_minibuffer ⇒ Object 



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# File 'lib/vimamsa/gui.rb', line 366

def init_minibuffer()
  # Init minibuffer
  sw = Gtk::ScrolledWindow.new
  sw.set_policy(:automatic, :automatic)
  overlay = Gtk::Overlay.new
  overlay.set_child(sw)
  @vbox.attach(overlay, 0, 3, 2, 1)
  sw.set_size_request(-1, 12)

  view = VSourceView.new(nil, nil)
  view.set_highlight_current_line(false)
  view.set_show_line_numbers(false)
  # view.set_buffer(buf1)
  ssm = GtkSource::StyleSchemeManager.new
  ssm.set_search_path(ssm.search_path << ppath("styles/"))
  sty = ssm.get_scheme("molokai_edit")
  view.buffer.highlight_matching_brackets = false #TODO
  view.buffer.style_scheme = sty
  provider = Gtk::CssProvider.new
  # provider.load(data: "textview { font-family: Monospace; font-size: 11pt; }")
  provider.load(data: "textview { font-family: Arial; font-size: 10pt; color:#eeeeee}")
  view.style_context.add_provider(provider)
  view.wrap_mode = :char
  @minibuf = view
  # startiter = view.buffer.get_iter_at(:offset => 0)
  message("STARTUP")
  sw.set_child(view)
end

#init_window ⇒ Object 



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# File 'lib/vimamsa/gui.rb', line 598

def init_window
  @last_debug_idle = Time.now
  app = Gtk::Application.new("net.samiddhi.vimamsa.r#{rand(1000)}", :flags_none)
  @app = app

  Gtk::Settings.default.gtk_application_prefer_dark_theme = true
  Gtk::Settings.default.gtk_theme_name = "Adwaita"

  app.signal_connect "activate" do
    @window = Gtk::ApplicationWindow.new(app)
    @window.set_application(app)

    @window.title = "Multiple Views"
    @vpaned = Gtk::Paned.new(:vertical)

    @vbox = Gtk::Grid.new()
    @window.add(@vbox)

    Thread.new {
      GLib::Idle.add(proc { debug_idle_func })
    }

    reset_controllers

    @sw = Gtk::ScrolledWindow.new
    @sw.set_policy(:automatic, :automatic)

    @last_adj_time = Time.now
    @sw.vadjustment.signal_connect("value-changed") { |x|
      # pp x.page_increment
      # pp x.page_size
      # pp x.step_increment
      # pp x.upper
      # pp x.value
      # pp x
      @last_adj_time = Time.now
    }

    @overlay = Gtk::Overlay.new
    @overlay.add_overlay(@sw)

    @statnfo = Gtk::Label.new
    @subtitle = Gtk::Label.new("")
    @statbox = Gtk::Box.new(:horizontal, 2)
    @statnfo.set_size_request(150, 10)
    @statbox.pack_end(@subtitle, :expand => true, :fill => true, :padding => 0)
    @statbox.pack_end(@statnfo, :expand => false, :fill => false, :padding => 0)
    provider = Gtk::CssProvider.new
    @statnfo.add_css_class("statnfo")
    provider.load(data: "label.statnfo {   background-color:#353535; font-size: 10pt; margin-top:2px; margin-bottom:2px; align:right;}")

    provider = Gtk::CssProvider.new
    @statnfo.style_context.add_provider(provider)

    # numbers: left, top, width, height
    @vbox.attach(@overlay, 0, 2, 2, 1)
    @sw.vexpand = true
    @sw.hexpand = true

    # column, row, width height
    @vbox.attach(@statbox, 1, 1, 1, 1)

    @overlay.vexpand = true
    @overlay.hexpand = true

    init_minibuffer

    name = "save"
    window = @window
    action = Gio::SimpleAction.new(name)
    action.signal_connect "activate" do |_simple_action, _parameter|
      dialog = Gtk::MessageDialog.new(:parent => window,
                                      :flags => :destroy_with_parent,
                                      :buttons => :close,
                                      :message => "Action FOOBAR activated.")
      dialog.signal_connect(:response) do
        dialog.destroy
      end
      dialog.show
    end

    @window.add_action(action)
    doc_actions = Gio::SimpleActionGroup.new
    doc_actions.add_action(action)

    act_quit = Gio::SimpleAction.new("quit")
    app.add_action(act_quit)
    act_quit.signal_connect "activate" do |_simple_action, _parameter|
      window.destroy
      exit!
    end

    menubar = Gio::Menu.new
    app.menubar = menubar
    @window.show_menubar = true

    @menubar = menubar

    @windows[1] = { :sw => @sw, :overlay => @overlay, :id => 1 }
    @active_window = @windows[1]

    @window.show

    run_as_idle proc { idle_set_size }

    prov = Gtk::CssProvider.new
    # See gtk-4.9.4/gtk/theme/Default/_common.scss  on how to theme
    # gtksourceview/gtksourcestyleschemepreview.c
    # gtksourceview/gtksourcestylescheme.c
    prov.load(data: " headerbar { padding: 0 0px; min-height: 16px; border-width: 0 0 0px; border-style: solid; }
    
    textview border.left gutter { color: #8aa; font-size:8pt; }     
    
    textview border.left gutter { padding: 0px 0px 0px 0px; margin: 0px 0px 0px 0px; color: #8aa; font-size:9pt; }     
    
       headerbar .title {
    font-weight: bold;
    font-size: 11pt;
    color: #cdffee;
}

 headerbar > windowhandle > box .start {
    border-spacing: 6px;
}
 
 headerbar windowcontrols button {
      min-height: 15px;
      min-width: 15px;
    }

 popover background > contents { padding: 8px; border-radius: 20px; } 
       ")
    @window.style_context.add_provider(prov)

    sc = Gtk::StyleContext.add_provider_for_display(Gdk::Display.default, prov)

    vma.start
  end

  # Vimamsa::Menu.new(@menubar) #TODO:gtk4
  app.run

  # @window.show_all
  # @window.show
end

#is_buffer_open(bufid) ⇒ Object 



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# File 'lib/vimamsa/gui.rb', line 811

def is_buffer_open(bufid)
  openbufids = @windows.keys.collect { |x| @windows[x][:sw].child.bufo.id }
  return openbufids.include?(bufid)
end

#new_scrolled_window ⇒ Object 



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# File 'lib/vimamsa/gui.rb', line 909

def new_scrolled_window
  sw = Gtk::ScrolledWindow.new
  sw.set_policy(:automatic, :automatic)
  @last_adj_time = Time.now
  sw.vadjustment.signal_connect("value-changed") { |x|
    @last_adj_time = Time.now
    debug "@sw.vadjustment #{x.value}", 2
  }
  return sw
end

#overlay_draw_cursor(textpos) ⇒ Object 



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# File 'lib/vimamsa/gui.rb', line 293

def overlay_draw_cursor(textpos)
  # return
  remove_overlay_cursor
  GLib::Idle.add(proc { self.overlay_draw_cursor_(textpos) })
  # overlay_draw_cursor_(textpos)
end

#overlay_draw_cursor_(textpos) ⇒ Object

To draw on empty lines and line-ends (where select_range doesn’t work)



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# File 'lib/vimamsa/gui.rb', line 317

def overlay_draw_cursor_(textpos)
  # Thread.new {
  # GLib::Idle.add(proc { p.call; false })
  # }

  # while Time.now - @last_adj_time < 0.3
  # return true
  # end

  remove_overlay_cursor
  @cursorov = Gtk::Fixed.new
  @overlay.add_overlay(@cursorov)

  (x, y) = @view.pos_to_coord(textpos)
  pp [x, y]

  # Trying to draw only background of character "I"
  label = Gtk::Label.new("<span background='#00ffaaff' foreground='#00ffaaff' weight='ultrabold'>I</span>")
  label.use_markup = true
  @cursorov.put(label, x, y)
  @cursorov.show
  return false
end

#overlay_draw_text(text, textpos) ⇒ Object 



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# File 'lib/vimamsa/gui.rb', line 273

def overlay_draw_text(text, textpos)
  # debug "overlay_draw_text #{[x,y]}"
  (x, y) = @view.pos_to_coord(textpos)
  # debug "overlay_draw_text #{[x,y]}"
  label = Gtk::Label.new("<span background='#000000ff' foreground='#ff0000' weight='ultrabold'>#{text}</span>")
  label.use_markup = true
  @da.put(label, x, y)
end

#page_down(multip: 1.0) ⇒ Object 



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

def page_down(multip: 1.0)
  va = @sw.vadjustment
  newval = va.value + va.page_increment * multip
  va.value = newval
  @sw.child.set_cursor_to_top
end

#page_up(multip: 1.0) ⇒ Object 



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# File 'lib/vimamsa/gui.rb', line 927

def page_up(multip: 1.0)
  va = @sw.vadjustment
  newval = va.value - va.page_increment * multip
  newval = 0 if newval < 0
  va.value = newval
  @sw.child.set_cursor_to_top
end

#quit ⇒ Object 



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

def quit
  @window.destroy
  @shutdown = true
  for t in Thread.list
    if t != Thread.current
      t.exit
    end
  end
end

#remove_extra_controllers ⇒ Object 



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# File 'lib/vimamsa/gui.rb', line 559

def remove_extra_controllers
  clist = vma.gui.window.observe_controllers
  to_remove = []
  (0..(clist.n_items - 1)).each { |x|
    ctr = clist.get_item(x)
    if ctr.class == Gtk::EventControllerKey and ctr != @press
      to_remove << ctr
    end
  }
  if to_remove.size > 0
    # puts "Removing controllers:"
    # pp to_remove
    to_remove.each { |x| vma.gui.window.remove_controller(x) }
  end
end

#remove_overlay_cursor ⇒ Object 



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# File 'lib/vimamsa/gui.rb', line 286

def remove_overlay_cursor()
  if !@cursorov.nil?
    @overlay.remove_overlay(@cursorov)
    @cursorov = nil
  end
end

#reset_controllers ⇒ Object

Remove widget event controllers added by gtk, and add our own.



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# File 'lib/vimamsa/gui.rb', line 500

def reset_controllers
  clist = @window.observe_controllers
  to_remove = []
  (0..(clist.n_items - 1)).each { |x|
    ctr = clist.get_item(x)
    if ctr.class == Gtk::EventControllerKey
      to_remove << ctr
    end
  }
  if to_remove.size > 0
    # debug "Removing controllers:"
    # pp to_remove
    to_remove.each { |x| @window.remove_controller(x) }
  end

  press = Gtk::EventControllerKey.new
  @press = press
  # to prevent SourceView key handler capturing any keypresses
  press.set_propagation_phase(Gtk::PropagationPhase::CAPTURE)
  @window.add_controller(press)

  press.signal_connect "key-pressed" do |gesture, keyval, keycode, y|
    name = Gdk::Keyval.to_name(keyval)
    uki = Gdk::Keyval.to_unicode(keyval)
    keystr = uki.chr("UTF-8")
    debug "key pressed #{keyval} #{keycode} name:#{name} str:#{keystr} unicode:#{uki}"
    buf.view.handle_key_event(keyval, keystr, :key_press)
    true
  end

  press.signal_connect "modifiers" do |eventctr, modtype|
    # eventctr: Gtk::EventControllerKey
    # modtype: Gdk::ModifierType
    debug "modifier change"
    vma.kbd.modifiers[:ctrl] = modtype.control_mask?
    vma.kbd.modifiers[:alt] = modtype.alt_mask?
    vma.kbd.modifiers[:hyper] = modtype.hyper_mask?
    vma.kbd.modifiers[:lock] = modtype.lock_mask?
    vma.kbd.modifiers[:meta] = modtype.meta_mask?
    vma.kbd.modifiers[:shift] = modtype.shift_mask?
    vma.kbd.modifiers[:super] = modtype.super_mask?

    #TODO:?
    # button1_mask?
    # ...
    # button5_mask?
    true # = handled, do not propagate further
  end

  press.signal_connect "key-released" do |gesture, keyval, keycode, y|
    name = Gdk::Keyval.to_name(keyval)
    uki = Gdk::Keyval.to_unicode(keyval)
    keystr = uki.chr("UTF-8")
    debug "key released #{keyval} #{keycode} name:#{name} str:#{keystr} unicode:#{uki}"
    buf.view.handle_key_event(keyval, keystr, :key_release)
    true # = handled, do not propagate further
  end
end

#run ⇒ Object 



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# File 'lib/vimamsa/gui.rb', line 213

def run
  init_window
  # init_rtext
end

#run_after_scrolling(p) ⇒ Object

Run proc after animated scrolling has stopped (e.g. after page down)



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# File 'lib/vimamsa/gui.rb', line 301

def run_after_scrolling(p)
  Thread.new {
    # After running
    #   view.signal_emit("move-cursor", Gtk::MovementStep.new(:PAGES)
    # have to wait for animated page down scrolling to actually start
    # Then have to wait determine that it has stopped if scrolling adjustment stops changing. There should be a better way to do this.
    sleep 0.1
    while Time.now - @last_adj_time < 0.1
      sleep 0.1
    end
    debug "SCROLLING ENDED", 2
    run_as_idle p
  }
end

#scale_all_images ⇒ Object 



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# File 'lib/vimamsa/gui.rb', line 233

def scale_all_images
  debug "scale all", 2
  for img in buf.images
    if !img[:obj].destroyed?
      img[:obj].scale_image
    end
  end
  false
end

#set_active_window(id) ⇒ Object 



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# File 'lib/vimamsa/gui.rb', line 833

def set_active_window(id)
  return if !@two_column
  return if id == @active_column
  return if id == @active_window[:id]

  if @windows[id].nil?
    debug "No such window #{id}", 2
    return
  end

  @active_window = @windows[id]
  @active_column = id #TODO: remove

  @sw = @windows[id][:sw]
  @overlay = @windows[id][:overlay]

  vma.buffers.set_current_buffer_by_id(@sw.child.bufo.id)

  #TODO: set buf & view of active window??

end

#set_buffer_to_window(bufid, winid) ⇒ Object 



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# File 'lib/vimamsa/gui.rb', line 859

def set_buffer_to_window(bufid, winid)
  view = @buffers[bufid]
  debug "vma.gui.set_buffer_to_window(#{bufid}), winid=#{winid}"
  buf1 = view.buffer

  @windows[winid][:sw].set_child(view)
  idle_ensure_cursor_drawn

  # @overlay = Gtk::Overlay.new
  # @overlay.add_overlay(view)

  #TODO:???
  # @view = view
  # @buf1 = buf1
  # $view = view ???
  # $vbuf = buf1

end

#set_current_buffer(id) ⇒ Object 



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# File 'lib/vimamsa/gui.rb', line 878

def set_current_buffer(id)
  view = @buffers[id]
  debug "vma.gui.set_current_buffer(#{id}), view=#{view}"
  buf1 = view.buffer
  @view = view
  @buf1 = buf1
  $view = view
  $vbuf = buf1

  # Check if buffer is already open in another column
  if @two_column and @active_column == 2 and id == @windows[1][:sw].child.bufo.id
    toggle_active_window
  elsif @two_column && @active_column == 1 && !@windows[2][:sw].child.nil? && id == @windows[2][:sw].child.bufo.id
    #TODO: should not need [email protected]? here. If this happens then other column is empty.
    toggle_active_window
  else
    #TODO: improve
    @overlay.remove_overlay(@sw)
    @sw.set_child(nil)
    # Creating a new ScrolledWindow every time to avoid a layout bug
    # https://gitlab.gnome.org/GNOME/gtk/-/issues/6189
    @sw = new_scrolled_window
    @sw.set_child(view)
    @overlay.add_overlay(@sw)
    @active_window[:sw] = @sw
  end
  view.grab_focus

  idle_ensure_cursor_drawn
end

#set_current_view(view) ⇒ Object

activate that window which has the given view



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# File 'lib/vimamsa/gui.rb', line 826

def set_current_view(view)
  w = @windows.find { |k, v| v[:sw].child == view }
  if !w.nil?
    set_active_window(w[0])
  end
end

#set_one_column ⇒ Object 



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# File 'lib/vimamsa/gui.rb', line 756

def set_one_column
  return if !@two_column
  @windows[2][:sw].set_child(nil)
  @windows.delete(2)

  @pane.set_start_child(nil)
  @pane.set_end_child(nil)

  @vbox.remove(@pane)
  @vbox.attach(@overlay, 0, 2, 2, 1)
  @vbox.attach(@statbox, 1, 1, 1, 1)
  @two_column = false
end

#set_two_column ⇒ Object 



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# File 'lib/vimamsa/gui.rb', line 770

def set_two_column
  return if @two_column
  # @window.set_default_size(800, 600) #TODO:gtk4
  # @vpaned = Gtk::Paned.new(:vertical)
  # @vbox = Gtk::Grid.new()
  # @window.add(@vbox)

  @sw2 = Gtk::ScrolledWindow.new
  @sw2.set_policy(:automatic, :automatic)
  @overlay2 = Gtk::Overlay.new
  @overlay2.add_overlay(@sw2)
  @pane = Gtk::Paned.new(:horizontal)

  @windows[2] = { :sw => @sw2, :overlay => @overlay2, :id => 2 }

  @vbox.remove(@overlay)

  @pane.set_start_child(@overlay2)
  @pane.set_end_child(@overlay)

  # numbers: left, top, width, height
  @vbox.attach(@pane, 0, 2, 2, 1)

  @sw2.vexpand = true
  @sw2.hexpand = true

  @overlay2.vexpand = true
  @overlay2.hexpand = true

  @sw2.show
  @two_column = true

  last = vma.buffers.get_last_visited_id
  if !last.nil?
    set_buffer_to_window(last, 2)
  else
    bf = create_new_buffer "\n\n", "buff", false
    set_buffer_to_window(bf.id, 2)
  end
end

#start_overlay_draw ⇒ Object 



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# File 'lib/vimamsa/gui.rb', line 259

def start_overlay_draw()
  @da = Gtk::Fixed.new
  @overlay.add_overlay(@da)

  # @overlay.set_overlay_pass_through(@da, true) #TODO:gtk4
end

#toggle_active_window ⇒ Object 



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# File 'lib/vimamsa/gui.rb', line 816

def toggle_active_window()
  return if !@two_column
  if @active_column == 1
    set_active_window(2)
  else
    set_active_window(1)
  end
end

#toggle_two_column ⇒ Object 



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# File 'lib/vimamsa/gui.rb', line 748

def toggle_two_column
  if @two_column
    set_one_column
  else
    set_two_column
  end
end