/**
 * @copydoc Editor::reload_settings
 */
void MapEditor::reload_settings() {

  Settings settings;

  MapScene* scene = ui.map_view->get_scene();
  if (scene != nullptr) {
    QBrush brush(settings.get_value_color(Settings::map_background));
    scene->setBackgroundBrush(brush);
  }

  get_view_settings().set_grid_style(static_cast<GridStyle>(
    settings.get_value_int(Settings::map_grid_style)));
  get_view_settings().set_grid_color(
    settings.get_value_color(Settings::map_grid_color));
}
/**
 * @brief Loads settings.
 */
void MapEditor::load_settings() {

  ViewSettings& view = get_view_settings();
  Settings settings;

  view.set_grid_visible(
    settings.get_value_bool(Settings::map_grid_show_at_opening));
  view.set_grid_size(settings.get_value_size(Settings::map_grid_size));

  reload_settings();
}
/**
 * @brief Loads settings.
 */
void SpriteEditor::load_settings() {

  ViewSettings& view = get_view_settings();
  EditorSettings settings;

  view.set_zoom(settings.get_value_double(EditorSettings::sprite_main_zoom));
  view.set_grid_visible(
    settings.get_value_bool(EditorSettings::sprite_grid_show_at_opening));
  view.set_grid_size(settings.get_value_size(EditorSettings::sprite_grid_size));

  ui.sprite_previewer->set_zoom(
    settings.get_value_double(EditorSettings::sprite_previewer_zoom));
  ui.sprite_previewer->set_show_origin(
    settings.get_value_bool(EditorSettings::sprite_origin_show_at_opening));

  reload_settings();
}
/**
 * @brief Auto detect the grid size.
 */
void SpriteEditor::auto_detect_grid_size() {

  if (auto_detect_grid) {

    SpriteModel::Index index = model->get_selected_index();

    // Try to get the first direction if no direction is selected.
    if (!index.is_direction_index()) {
      index.direction_nb = 0;
      if (!model->direction_exists(index)) {
        return;
      }
    }

    get_view_settings().set_grid_size(
      model->get_direction_first_frame_rect(index).size());
  }
}
/**
 * @brief Creates a map editor.
 * @param quest The quest containing the file.
 * @param path Path of the map data file to open.
 * @param parent The parent object or nullptr.
 * @throws EditorException If the file could not be opened.
 */
MapEditor::MapEditor(Quest& quest, const QString& path, QWidget* parent) :
  Editor(quest, path, parent),
  map_id(),
  map(nullptr),
  entity_creation_toolbar(nullptr),
  status_bar(nullptr),
  ignore_tileset_selection_changes(false) {

  ui.setupUi(this);
  build_entity_creation_toolbar();
  build_status_bar();

  // Get the map.
  ResourceType resource_type;
  QString map_id;
  quest.check_exists(path);
  if (!quest.is_resource_element(path, resource_type, map_id) ||
      resource_type != ResourceType::MAP) {
    throw EditorException(tr("File '%1' is not a map").arg(path));
  }
  this->map_id = map_id;

  // Editor properties.
  set_title(tr("Map %1").arg(get_file_name_without_extension()));
  set_icon(QIcon(":/images/icon_resource_map.png"));
  set_close_confirm_message(
        tr("Map '%1' has been modified. Save changes?").arg(map_id));
  set_select_all_supported(true);
  set_zoom_supported(true);
  get_view_settings().set_zoom(2.0);
  set_grid_supported(true);
  set_entity_type_visibility_supported(true);

  // Shortcuts.
  QAction* open_script_action = new QAction(this);
  open_script_action->setShortcut(tr("F4"));
  open_script_action->setShortcutContext(Qt::WindowShortcut);
  connect(open_script_action, SIGNAL(triggered(bool)),
          this, SLOT(open_script_requested()));
  addAction(open_script_action);

  // Open the file.
  map = new MapModel(quest, map_id, this);
  get_undo_stack().setClean();

  // Prepare the gui.
  const int side_width = 350;
  ui.splitter->setSizes({ side_width, width() - side_width });
  ui.map_side_splitter->setStretchFactor(0, 0);  // Don't expand the map properties view
  ui.map_side_splitter->setStretchFactor(1, 1);  // but only the tileset view.
  ui.tileset_field->set_resource_type(ResourceType::TILESET);
  ui.tileset_field->set_quest(quest);
  ui.music_field->set_resource_type(ResourceType::MUSIC);
  ui.music_field->set_quest(quest);
  ui.music_field->add_special_value("none", tr("<No music>"), 0);
  ui.music_field->add_special_value("same", tr("<Same as before>"), 1);
  ui.tileset_view->set_read_only(true);
  ui.map_view->set_map(map);
  ui.map_view->set_view_settings(get_view_settings());
  ui.map_view->set_common_actions(&get_common_actions());

  ui.size_field->config("x", 0, 99999, 8);
  ui.size_field->set_tooltips(
    tr("Width of the map in pixels"),
    tr("Height of the map in pixels"));

  ui.location_field->config(",", 0, 99999, 8);
  ui.location_field->set_tooltips(
    tr("Coordinates of the map in its world (useful to make adjacent scrolling maps)"),
    tr("Coordinates of the map in its world (useful to make adjacent scrolling maps)"));

  set_num_layers_visibility_supported(map->get_num_layers());

  load_settings();
  update();

  // Make connections.
  connect(&get_resources(), SIGNAL(element_description_changed(ResourceType, QString, QString)),
          this, SLOT(update_description_to_gui()));
  connect(ui.description_field, SIGNAL(editingFinished()),
          this, SLOT(set_description_from_gui()));

  connect(ui.size_field, SIGNAL(editing_finished()),
          this, SLOT(change_size_requested()));
  connect(map, SIGNAL(size_changed(QSize)),
          this, SLOT(update_size_field()));

  connect(ui.world_check_box, SIGNAL(stateChanged(int)),
          this, SLOT(world_check_box_changed()));
  connect(ui.world_field, SIGNAL(editingFinished()),
          this, SLOT(change_world_requested()));
  connect(map, SIGNAL(world_changed(QString)),
          this, SLOT(update_world_field()));

  connect(ui.floor_check_box, SIGNAL(stateChanged(int)),
          this, SLOT(floor_check_box_changed()));
  connect(ui.floor_field, SIGNAL(editingFinished()),
          this, SLOT(change_floor_requested()));
  connect(map, SIGNAL(floor_changed(int)),
          this, SLOT(update_floor_field()));

  connect(ui.location_field, SIGNAL(editing_finished()),
          this, SLOT(change_location_requested()));
  connect(map, SIGNAL(location_changed(QPoint)),
          this, SLOT(update_location_field()));

  connect(ui.tileset_field, SIGNAL(activated(QString)),
          this, SLOT(tileset_selector_activated()));
  connect(map, SIGNAL(tileset_id_changed(QString)),
          this, SLOT(tileset_id_changed(QString)));
  connect(ui.tileset_refresh_button, SIGNAL(clicked()),
          map, SLOT(tileset_modified()));
  connect(ui.tileset_edit_button, SIGNAL(clicked()),
          this, SLOT(open_tileset_requested()));

  connect(ui.music_field, SIGNAL(activated(QString)),
          this, SLOT(music_selector_activated()));
  connect(map, SIGNAL(music_id_changed(QString)),
          this, SLOT(update_music_field()));

  connect(ui.open_script_button, SIGNAL(clicked()),
          this, SLOT(open_script_requested()));

  connect(ui.map_view, SIGNAL(edit_entity_requested(EntityIndex, EntityModelPtr&)),
          this, SLOT(edit_entity_requested(EntityIndex, EntityModelPtr&)));
  connect(ui.map_view, SIGNAL(move_entities_requested(EntityIndexes, QPoint, bool)),
          this, SLOT(move_entities_requested(EntityIndexes, QPoint, bool)));
  connect(ui.map_view, SIGNAL(resize_entities_requested(QMap<EntityIndex, QRect>, bool)),
          this, SLOT(resize_entities_requested(QMap<EntityIndex, QRect>, bool)));
  connect(ui.map_view, SIGNAL(convert_tiles_requested(EntityIndexes)),
          this, SLOT(convert_tiles_requested(EntityIndexes)));
  connect(ui.map_view, SIGNAL(set_entities_direction_requested(EntityIndexes, int)),
          this, SLOT(set_entities_direction_requested(EntityIndexes, int)));
  connect(ui.map_view, SIGNAL(set_entities_layer_requested(EntityIndexes, int)),
          this, SLOT(set_entities_layer_requested(EntityIndexes, int)));
  connect(ui.map_view, SIGNAL(bring_entities_to_front_requested(EntityIndexes)),
          this, SLOT(bring_entities_to_front_requested(EntityIndexes)));
  connect(ui.map_view, SIGNAL(bring_entities_to_back_requested(EntityIndexes)),
          this, SLOT(bring_entities_to_back_requested(EntityIndexes)));
  connect(ui.map_view, SIGNAL(add_entities_requested(AddableEntities&)),
          this, SLOT(add_entities_requested(AddableEntities&)));
  connect(ui.map_view, SIGNAL(remove_entities_requested(EntityIndexes)),
          this, SLOT(remove_entities_requested(EntityIndexes)));

  connect(ui.map_view->get_scene(), SIGNAL(selectionChanged()),
          this, SLOT(map_selection_changed()));
}