Contents

# Copyright (c) 2023 M.J.N. Corino, The Netherlands
#
# This software is released under the MIT license.
# 
# Some parts are
# Copyright 2004-2007, wxRuby development team
# released under the MIT-like wxRuby2 license

# Hierarchical control with items

class Wx::TreeCtrl
  # Make these ruby enumerables so find, find_all, map etc are available
  include Enumerable
  # Iterate over all items
  alias :each :traverse

  # Return the children of +parent+ as an array of TreeItemIDs.
  def get_children(parent)
    kids = []
    kid, _ = get_first_child(parent)
    return [] unless kid.ok?
    kids << kid

    while kid = get_next_sibling(kids.last) and kid.ok?
      kids << kid
    end
    kids
  end

  # Returns a Wx::Rect corresponding to the edges of an individual tree
  # item, including the button, identified by id. The standard wxWidgets
  # API for getting the pixel location of an item is unrubyish, using an
  # input/output parameter. But since the underlying get_bounding_rect
  # method works, it's easier to fix the API in Ruby than adding more to
  # the already-toxic swig interface TreeCtrl.i file.
  def get_item_rect(tree_item_id)
    rect = Wx::Rect.new
    if get_bounding_rect(tree_item_id, rect, false)
      return rect
    else
      return nil
    end
  end

  # Returns a Wx::Rect corresponding to the edges of an individual tree
  # item's text label. See above.
  def get_label_rect(tree_item_id)
    rect = Wx::Rect.new
    if get_bounding_rect(tree_item_id, rect, true)
      return rect
    else
      nil
    end
  end
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
wxruby3-0.9.1-x64-mingw-ucrt	lib/wx/core/treectrl.rb
wxruby3-0.9.0-x64-mingw-ucrt	lib/wx/core/treectrl.rb