This commit was manufactured by cvs2svn to create branch 'ruby_1_8'.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@6238 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 337 insertions, 0 deletions

diff --git a/ext/tk/lib/tk/canvastag.rb b/ext/tk/lib/tk/canvastag.rb
new file mode 100644
index 0000000000..962e08b6e0
--- /dev/null
+++ b/ext/tk/lib/tk/canvastag.rb
@@ -0,0 +1,337 @@
+#
+# tk/canvastag.rb - methods for treating canvas tags
+#
+require 'tk'
+require 'tk/canvas'
+require 'tk/tagfont'
+
+module TkcTagAccess
+  include TkComm
+  include TkTreatTagFont
+
+  def addtag(tag)
+    @c.addtag(tag, 'with', @id)
+    self
+  end
+
+  def bbox
+    @c.bbox(@id)
+  end
+
+  def bind(seq, cmd=Proc.new, args=nil)
+    @c.itembind @id, seq, cmd, args
+    self
+  end
+
+  def bind_append(seq, cmd=Proc.new, args=nil)
+    @c.itembind_append @id, seq, cmd, args
+    self
+  end
+
+  def bind_remove(seq)
+    @c.itembind_remove @id, seq
+    self
+  end
+
+  def bindinfo(seq=nil)
+    @c.itembindinfo @id, seq
+  end
+
+  def cget(option)
+    @c.itemcget @id, option
+  end
+
+  def configure(key, value=None)
+    @c.itemconfigure @id, key, value
+    self
+  end
+#  def configure(keys)
+#    @c.itemconfigure @id, keys
+#  end
+
+  def configinfo(key=nil)
+    @c.itemconfiginfo @id, key
+  end
+
+  def current_configinfo(key=nil)
+    @c.current_itemconfiginfo @id, key
+  end
+
+  def coords(*args)
+    @c.coords @id, *args
+  end
+
+  def dchars(first, last=None)
+    @c.dchars @id, first, last
+    self
+  end
+
+  def dtag(tag_to_del=None)
+    @c.dtag @id, tag_to_del
+    self
+  end
+
+  def find
+    @c.find 'withtag', @id
+  end
+  alias list find
+
+  def focus
+    @c.itemfocus @id
+  end
+
+  def gettags
+    @c.gettags @id
+  end
+
+  def icursor(index)
+    @c.icursor @id, index
+    self
+  end
+
+  def index(index)
+    @c.index @id, index
+  end
+
+  def insert(beforethis, string)
+    @c.insert @id, beforethis, string
+    self
+  end
+
+  def lower(belowthis=None)
+    @c.lower @id, belowthis
+    self
+  end
+
+  def move(xamount, yamount)
+    @c.move @id, xamount, yamount
+    self
+  end
+
+  def raise(abovethis=None)
+    @c.raise @id, abovethis
+    self
+  end
+
+  def scale(xorigin, yorigin, xscale, yscale)
+    @c.scale @id, xorigin, yorigin, xscale, yscale
+    self
+  end
+
+  def select_adjust(index)
+    @c.select('adjust', @id, index)
+    self
+  end
+  def select_from(index)
+    @c.select('from', @id, index)
+    self
+  end
+  def select_to(index)
+    @c.select('to', @id, index)
+    self
+  end
+
+  def itemtype
+    @c.itemtype @id
+  end
+
+  # Following operators support logical expressions of canvas tags
+  # (for Tk8.3+).
+  # If tag1.path is 't1' and tag2.path is 't2', then
+  #      ltag = tag1 & tag2; ltag.path => "(t1)&&(t2)"
+  #      ltag = tag1 | tag2; ltag.path => "(t1)||(t2)"
+  #      ltag = tag1 ^ tag2; ltag.path => "(t1)^(t2)"
+  #      ltag = - tag1;      ltag.path => "!(t1)"
+  def & (tag)
+    if tag.kind_of? TkObject
+      TkcTagString.new(@c, '(' + @id + ')&&(' + tag.path + ')')
+    else
+      TkcTagString.new(@c, '(' + @id + ')&&(' + tag.to_s + ')')
+    end
+  end
+
+  def | (tag)
+    if tag.kind_of? TkObject
+      TkcTagString.new(@c, '(' + @id + ')||(' + tag.path + ')')
+    else
+      TkcTagString.new(@c, '(' + @id + ')||(' + tag.to_s + ')')
+    end
+  end
+
+  def ^ (tag)
+    if tag.kind_of? TkObject
+      TkcTagString.new(@c, '(' + @id + ')^(' + tag.path + ')')
+    else
+      TkcTagString.new(@c, '(' + @id + ')^(' + tag.to_s + ')')
+    end
+  end
+
+  def -@
+    TkcTagString.new(@c, '!(' + @id + ')')
+  end
+end
+
+class TkcTag<TkObject
+  include TkcTagAccess
+
+  CTagID_TBL = TkCore::INTERP.create_table
+  Tk_CanvasTag_ID = ['ctag'.freeze, '00000'.taint].freeze
+
+  TkCore::INTERP.init_ip_env{ CTagID_TBL.clear }
+
+  def TkcTag.id2obj(canvas, id)
+    cpath = canvas.path
+    return id unless CTagID_TBL[cpath]
+    CTagID_TBL[cpath][id]? CTagID_TBL[cpath][id]: id
+  end
+
+  def initialize(parent, mode=nil, *args)
+    unless parent.kind_of?(TkCanvas)
+      fail ArguemntError, "expect TkCanvas for 1st argument"
+    end
+    @c = parent
+    @cpath = parent.path
+    @path = @id = Tk_CanvasTag_ID.join('')
+    CTagID_TBL[@cpath] = {} unless CTagID_TBL[@cpath]
+    CTagID_TBL[@cpath][@id] = self
+    Tk_CanvasTag_ID[1].succ!
+    if mode
+      tk_call_without_enc(@c.path, "addtag", @id, mode, *args)
+    end
+  end
+  def id
+    @id
+  end
+
+  def delete
+    @c.delete @id
+    CTagID_TBL[@cpath].delete(@id) if CTagID_TBL[@cpath]
+    self
+  end
+  alias remove  delete
+  alias destroy delete
+
+  def set_to_above(target)
+    @c.addtag_above(@id, target)
+    self
+  end
+  alias above set_to_above
+
+  def set_to_all
+    @c.addtag_all(@id)
+    self
+  end
+  alias all set_to_all
+
+  def set_to_below(target)
+    @c.addtag_below(@id, target)
+    self
+  end
+  alias below set_to_below
+
+  def set_to_closest(x, y, halo=None, start=None)
+    @c.addtag_closest(@id, x, y, halo, start)
+    self
+  end
+  alias closest set_to_closest
+
+  def set_to_enclosed(x1, y1, x2, y2)
+    @c.addtag_enclosed(@id, x1, y1, x2, y2)
+    self
+  end
+  alias enclosed set_to_enclosed
+
+  def set_to_overlapping(x1, y1, x2, y2)
+    @c.addtag_overlapping(@id, x1, y1, x2, y2)
+    self
+  end
+  alias overlapping set_to_overlapping
+
+  def set_to_withtag(target)
+    @c.addtag_withtag(@id, target)
+    self
+  end
+  alias withtag set_to_withtag
+end
+
+class TkcTagString<TkcTag
+  def self.new(parent, name, *args)
+    if CTagID_TBL[parent.path] && CTagID_TBL[parent.path][name]
+      return CTagID_TBL[parent.path][name]
+    else
+      super(parent, name, *args)
+    end
+  end
+
+  def initialize(parent, name, mode=nil, *args)
+    unless parent.kind_of?(TkCanvas)
+      fail ArguemntError, "expect TkCanvas for 1st argument"
+    end
+    @c = parent
+    @cpath = parent.path
+    @path = @id = name
+    CTagID_TBL[@cpath] = {} unless CTagID_TBL[@cpath]
+    CTagID_TBL[@cpath][@id] = self
+    if mode
+      tk_call_without_enc(@c.path, "addtag", @id, mode, *args)
+    end
+  end
+end
+TkcNamedTag = TkcTagString
+
+class TkcTagAll<TkcTag
+  def initialize(parent)
+    unless parent.kind_of?(TkCanvas)
+      fail ArguemntError, "expect TkCanvas for 1st argument"
+    end
+    @c = parent
+    @cpath = parent.path
+    @path = @id = 'all'
+    CTagID_TBL[@cpath] = {} unless CTagID_TBL[@cpath]
+    CTagID_TBL[@cpath][@id] = self
+  end
+end
+
+class TkcTagCurrent<TkcTag
+  def initialize(parent)
+    unless parent.kind_of?(TkCanvas)
+      fail ArguemntError, "expect TkCanvas for 1st argument"
+    end
+    @c = parent
+    @cpath = parent.path
+    @path = @id = 'current'
+    CTagID_TBL[@cpath] = {} unless CTagID_TBL[@cpath]
+    CTagID_TBL[@cpath][@id] = self
+  end
+end
+
+class TkcGroup<TkcTag
+  Tk_cGroup_ID = ['tkcg'.freeze, '00000'.taint].freeze
+  def create_self(parent, *args)
+    unless parent.kind_of?(TkCanvas)
+      fail ArguemntError, "expect TkCanvas for 1st argument"
+    end
+    @c = parent
+    @cpath = parent.path
+    @path = @id = Tk_cGroup_ID.join('')
+    CTagID_TBL[@cpath] = {} unless CTagID_TBL[@cpath]
+    CTagID_TBL[@cpath][@id] = self
+    Tk_cGroup_ID[1].succ!
+    add(*args) if args != []
+  end
+  private :create_self
+  
+  def include(*tags)
+    for i in tags
+      i.addtag @id
+    end
+    self
+  end
+
+  def exclude(*tags)
+    for i in tags
+      i.delete @id
+    end
+    self
+  end
+end