Small demo of how nice Qt bindings for ruby is.

entity_widget.rb

require 'Qt4'
require 'domain/commands/create_entity_command.rb'
require 'domain/entity_mapper.rb'

# Author :: Simon Symeonidis 
# The entity widget for the game editor. This is loaded and accessed as a tab
# along with all the other uis.
#
# TODO: this should have a list at a side of current entities, and the ui used
# to either edit the selected entity, or save a new one.
class EntityWidget < Qt::Widget
  slots 'add_entity()' 

  # This is the data model for the list of entities
  # (QStandardItemModel)
  attr_accessor :list_model 

  # TODO Status missing (to set a status to the player eg. poisoned, sleep etc)
  # Default init, make ui
  def initialize
    super
    @list_model = Qt::StandardItemModel.new
    make_ui
  end

private 

  def make_ui
    @id_label = Qt::Label.new(tr("ID"))
    @id_ledit = Qt::LineEdit.new
    @name_label = Qt::Label.new(tr("Name"))
    @name_ledit = Qt::LineEdit.new
    @current_hitpoints_ledit = Qt::LineEdit.new
    @current_hitpoints_label = Qt::Label.new(tr("Current hitpoints"))
    @max_hitpoints_ledit = Qt::LineEdit.new
    @max_hitpoints_label = Qt::Label.new(tr("Max hitpoints"))
    @max_magic_power_ledit = Qt::LineEdit.new
    @max_magic_power_label = Qt::Label.new(tr("Max Magic"))
    @strength_ledit = Qt::LineEdit.new
    @strength_label = Qt::Label.new(tr("Strength"))
    @stamina_ledit = Qt::LineEdit.new
    @stamina_label = Qt::Label.new(tr("Stamina"))
    @agility_ledit = Qt::LineEdit.new
    @agility_label = Qt::Label.new(tr("Agility"))
    @defense_ledit = Qt::LineEdit.new
    @defense_label = Qt::Label.new(tr("Defense"))
    @unused_skillpoints_ledit = Qt::LineEdit.new
    @unused_skillpoints_label = Qt::Label.new(tr("Unused Skillpoints"))
    @all_items_listview       = Qt::ListView.new
    @add_button = Qt::PushButton.new(tr("Add"))
    @remove_button = Qt::PushButton.new(tr("Remove Selected"))
    gbox = Qt::GridLayout.new
    vbox = Qt::VBoxLayout.new
    hbox = Qt::HBoxLayout.new

    @id_ledit.setEnabled(false)
    @all_items_listview.setModel(@list_model)

    connect(@add_button, SIGNAL('clicked()'), self, SLOT('add_entity()'))

    # TODO change to ++variable because hardcoding numbers is fucking stupid
    gbox.addWidget(@id_label, 0, 0)
    gbox.addWidget(@id_ledit, 0, 1)
    gbox.addWidget(@name_label, 1, 0)
    gbox.addWidget(@name_ledit, 1, 1)
    gbox.addWidget(@current_hitpoints_label, 2, 0)
    gbox.addWidget(@current_hitpoints_ledit, 2, 1)
    gbox.addWidget(@max_hitpoints_label, 3, 0)
    gbox.addWidget(@max_hitpoints_ledit, 3, 1)
    gbox.addWidget(@max_magic_power_label, 4, 0)
    gbox.addWidget(@max_magic_power_ledit, 4, 1)
    gbox.addWidget(@strength_label, 5, 0)
    gbox.addWidget(@strength_ledit, 5, 1)
    gbox.addWidget(@stamina_label, 6, 0)
    gbox.addWidget(@stamina_ledit, 6, 1)
    gbox.addWidget(@agility_label, 7, 0)
    gbox.addWidget(@agility_ledit, 7, 1)
    gbox.addWidget(@defense_label, 8, 0)
    gbox.addWidget(@defense_ledit, 8, 1)
    gbox.addWidget(@unused_skillpoints_label, 9, 0)
    gbox.addWidget(@unused_skillpoints_ledit, 9, 1)

    vbox.addLayout(gbox)
    vbox.addWidget(@add_button)
    vbox.addWidget(@remove_button)

    hbox.addWidget(@all_items_listview)
    hbox.addLayout(vbox)

    # set the initial data to the list 
    poppulate_list_on_init

    setLayout(hbox)
  end

private
  # Add a new entity to the database
  def add_entity()
    cec = CreateEntityCommand.new(@id_ledit.text(), @name_ledit.text(), 
      @max_hitpoints_ledit.text(), @max_magic_power_ledit.text(), 
      @strength_ledit.text(), @stamina_ledit.text(), @agility_ledit.text(), 
      @defense_ledit.text(), @unused_skillpoints_ledit.text(),
      @current_hitpoints_ledit.text())
    cec.execute
    list_item = Qt::StandardItem.new(@name_ledit.text())
    @list_model.appendRow(list_item)
    clear
  end

  # Once you add an entity you probably want to clear stuff.
  def clear
    @id_ledit.text= "" 
    @name_ledit.text= "" 
    @current_hitpoints_ledit.text= ""
    @max_hitpoints_ledit.text= "" 
    @max_magic_power_ledit.text= "" 
    @strength_ledit.text= "" 
    @stamina_ledit.text= "" 
    @agility_ledit.text= "" 
    @defense_ledit.text= "" 
    @unused_skillpoints_ledit.text= "" 
  end

  # TODO
  def poppulate_list_on_init
    EntityMapper.find_all.each do |entity|
      list_item = Qt::StandardItem.new(entity.name)
      @list_model.appendRow(list_item)
    end
  end

end

game_editor.rb

require 'slackedit/version.rb'
require 'Qt4'

# Editor widgets go here
require 'domain/cartridge_manager.rb'
require 'presentation/widgets/entity_widget.rb'
require 'presentation/widgets/room_widget.rb'
require 'presentation/widgets/item_widget.rb'

# Author :: Simon Symeonidis
# Licence :: GPL v3.0
# The main editor 
class GameEditor < Qt::Dialog

  # Default initialization 
  def initialize(parent=nil)
    super(parent)

    init_widgets

    @game_name = CartridgeManager.instance.game_name
    vbox       = Qt::VBoxLayout.new()
    vbox.addWidget(@tabs)

    setLayout(vbox)
    setWindowTitle("#{@game_name} | #{Slackedit::NAME}-#{Slackedit::VERSION}")
  end

private 

  # Init the required widgets
  def init_widgets
    make_tabs
  end

  def make_tabs
    @tabs = Qt::TabWidget.new
    @tabs.addTab(EntityWidget.new, "Entities")
    @tabs.addTab(RoomWidget.new, "Room Editor")
    @tabs.addTab(ItemWidget.new, "Item Specifications")
  end
  
  attr :tabs

end