From 6175ca03be6d0d51359f9017123708987d0f5eb7 Mon Sep 17 00:00:00 2001
From: shyouhei <shyouhei@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Wed, 15 Aug 2007 23:23:39 +0000
Subject: add tag v1_8_5_91

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/tags/v1_8_5_91@13046 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ruby_1_8_5/ext/tk/lib/tk/timer.rb | 634 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 634 insertions(+)
 create mode 100644 ruby_1_8_5/ext/tk/lib/tk/timer.rb

(limited to 'ruby_1_8_5/ext/tk/lib/tk/timer.rb')

diff --git a/ruby_1_8_5/ext/tk/lib/tk/timer.rb b/ruby_1_8_5/ext/tk/lib/tk/timer.rb
new file mode 100644
index 0000000000..49b7f1b06a
--- /dev/null
+++ b/ruby_1_8_5/ext/tk/lib/tk/timer.rb
@@ -0,0 +1,634 @@
+#
+#   tk/timer.rb : methods for Tcl/Tk after command
+#
+#   $Id: timer.rb,v 1.1.2.15 2005/05/08 14:20:53 nagai Exp $
+#
+require 'tk'
+
+class TkTimer
+  include TkCore
+  extend TkCore
+
+  TkCommandNames = ['after'.freeze].freeze
+
+  Tk_CBID = ['a'.freeze, '00000'.taint].freeze
+  Tk_CBTBL = {}.taint
+
+  TkCore::INTERP.add_tk_procs('rb_after', 'id', <<-'EOL')
+    if {[set st [catch {eval {ruby_cmd TkTimer callback} $id} ret]] != 0} {
+        return -code $st $ret
+    } {
+        return $ret
+    }
+  EOL
+
+  DEFAULT_IGNORE_EXCEPTIONS = [ NameError, RuntimeError ].freeze
+
+  ###############################
+  # class methods
+  ###############################
+  def self.start(*args, &b)
+    self.new(*args, &b).start
+  end
+
+  def self.callback(obj_id)
+    ex_obj = Tk_CBTBL[obj_id]
+    return "" if ex_obj == nil; # canceled
+    ex_obj.cb_call
+  end
+
+  def self.info(obj = nil)
+    if obj
+      if obj.kind_of?(TkTimer)
+        if obj.after_id
+          inf = tk_split_list(tk_call_without_enc('after','info',obj.after_id))
+          [Tk_CBTBL[inf[0][1]], inf[1]]
+        else
+          nil
+        end
+      else
+        fail ArgumentError, "TkTimer object is expected"
+      end
+    else
+      tk_call_without_enc('after', 'info').split(' ').collect!{|id|
+        ret = Tk_CBTBL.find{|key,val| val.after_id == id}
+        (ret == nil)? id: ret[1]
+      }
+    end
+  end
+
+
+  ###############################
+  # instance methods
+  ###############################
+  def do_callback
+    @in_callback = true
+    @after_id = nil
+    begin
+      @return_value = @current_proc.call(self)
+    rescue SystemExit
+      exit(0)
+    rescue Interrupt
+      exit!(1)
+    rescue Exception => e
+      if @cancel_on_exception && 
+          @cancel_on_exception.find{|exc| e.kind_of?(exc)}
+        cancel
+        @return_value = e
+        @in_callback = false
+        return e
+      else
+        fail e
+      end
+    end
+    if @set_next
+      set_next_callback(@current_args)
+    else
+      @set_next = true
+    end
+    @in_callback = false
+    @return_value
+  end
+
+  def set_callback(sleep, args=nil)
+    if TkCore::INTERP.deleted?
+      self.cancel
+      return self
+    end
+    @after_script = "rb_after #{@id}"
+    @after_id = tk_call_without_enc('after', sleep, @after_script)
+    @current_args = args
+    @current_script = [sleep, @after_script]
+    self
+  end
+
+  def set_next_callback(args)
+    if @running == false || @proc_max == 0 || @do_loop == 0
+      Tk_CBTBL.delete(@id) ;# for GC
+      @running = false
+      @wait_var.value = 0
+      return
+    end
+    if @current_pos >= @proc_max
+      if @do_loop < 0 || (@do_loop -= 1) > 0
+        @current_pos = 0
+      else
+        Tk_CBTBL.delete(@id) ;# for GC
+        @running = false
+        @wait_var.value = 0
+        return
+      end
+    end
+
+    @current_args = args
+
+    # if @sleep_time.kind_of?(Proc)
+    if TkComm._callback_entry?(@sleep_time)
+      sleep = @sleep_time.call(self)
+    else
+      sleep = @sleep_time
+    end
+    @current_sleep = sleep
+
+    cmd, *cmd_args = @loop_proc[@current_pos]
+    @current_pos += 1
+    @current_proc = cmd
+
+    set_callback(sleep, cmd_args)
+  end
+
+  def initialize(*args, &b)
+    # @id = Tk_CBID.join('')
+    @id = Tk_CBID.join(TkCore::INTERP._ip_id_)
+    Tk_CBID[1].succ!
+
+    @wait_var = TkVariable.new(0)
+
+    @cb_cmd = TkCore::INTERP.get_cb_entry(self.method(:do_callback))
+
+    @set_next = true
+
+    @init_sleep = 0
+    @init_proc = nil
+    @init_args = []
+
+    @current_script = []
+    @current_proc = nil
+    @current_args = nil
+    @return_value = nil
+
+    @sleep_time = 0
+    @current_sleep = 0
+    @loop_exec = 0
+    @do_loop = 0
+    @loop_proc = []
+    @proc_max = 0
+    @current_pos = 0
+
+    @after_id = nil
+    @after_script = nil
+
+    @cancel_on_exception = DEFAULT_IGNORE_EXCEPTIONS
+    # Unless @cancel_on_exception, Ruby/Tk shows an error dialog box when 
+    # an excepsion is raised on TkTimer callback procedure. 
+    # If @cancel_on_exception is an array of exception classes and the raised 
+    # exception is included in the array, Ruby/Tk cancels executing TkTimer 
+    # callback procedures silently (TkTimer#cancel is called and no dialog is 
+    # shown). 
+
+    if b
+      case args.size
+      when 0
+        add_procs(b)
+      when 1
+        args << -1 << b
+      else
+        args << b
+      end
+    end
+
+    set_procs(*args) if args != []
+
+    @running = false
+    @in_callback = false
+  end
+
+  attr :after_id
+  attr :after_script
+  attr :current_proc
+  attr :current_args
+  attr :current_sleep
+  alias :current_interval :current_sleep
+  attr :return_value
+
+  attr_accessor :loop_exec
+
+  def cb_call
+    @cb_cmd.call
+  end
+
+  def get_procs
+    [@init_sleep, @init_proc, @init_args, @sleep_time, @loop_exec, @loop_proc]
+  end
+
+  def current_status
+    [@running, @current_sleep, @current_proc, @current_args, 
+      @do_loop, @cancel_on_exception]
+  end
+
+  def cancel_on_exception?
+    @cancel_on_exception
+  end
+
+  def cancel_on_exception=(mode)
+    if mode.kind_of?(Array)
+      @cancel_on_exception = mode
+    elsif mode
+      @cancel_on_exception = DEFAULT_IGNORE_EXCEPTIONS
+    else
+      @cancel_on_exception = false
+    end
+    #self
+  end
+
+  def running?
+    @running
+  end
+
+  def loop_rest
+    @do_loop
+  end
+
+  def loop_rest=(rest)
+    @do_loop = rest
+    #self
+  end
+
+  def set_interval(interval)
+    #if interval != 'idle' && interval != :idle \
+    #  && !interval.kind_of?(Integer) && !interval.kind_of?(Proc)
+    if interval != 'idle' && interval != :idle \
+      && !interval.kind_of?(Integer) && !TkComm._callback_entry?(interval)
+      fail ArgumentError, "expect Integer or Proc"
+    end
+    @sleep_time = interval
+  end
+
+  def set_procs(interval, loop_exec, *procs)
+    #if interval != 'idle' && interval != :idle \
+    #   && !interval.kind_of?(Integer) && !interval.kind_of?(Proc)
+    if interval != 'idle' && interval != :idle \
+      && !interval.kind_of?(Integer) && !TkComm._callback_entry?(interval)
+      fail ArgumentError, "expect Integer or Proc for 1st argument"
+    end
+    @sleep_time = interval
+
+    @loop_proc = []
+    procs.each{|e|
+      # if e.kind_of?(Proc)
+      if TkComm._callback_entry?(e)
+        @loop_proc.push([e])
+      else
+        @loop_proc.push(e)
+      end
+    }
+    @proc_max = @loop_proc.size
+    @current_pos = 0
+
+    if loop_exec.kind_of?(Integer) && loop_exec < 0
+      @loop_exec = -1
+    elsif loop_exec == true
+      @loop_exec = -1
+    elsif loop_exec == nil || loop_exec == false || loop_exec == 0
+      @loop_exec = 0
+    else
+      if not loop_exec.kind_of?(Integer)
+        fail ArgumentError, "expect Integer for 2nd argument"
+      end
+      @loop_exec = loop_exec
+    end
+    @do_loop = @loop_exec
+
+    self
+  end
+
+  def add_procs(*procs)
+    procs.each{|e|
+      # if e.kind_of?(Proc)
+      if TkComm._callback_entry?(e)
+        @loop_proc.push([e])
+      else
+        @loop_proc.push(e)
+      end
+    }
+    @proc_max = @loop_proc.size
+
+    self
+  end
+
+  def delete_procs(*procs)
+    procs.each{|e|
+      # if e.kind_of?(Proc)
+      if TkComm._callback_entry?(e)
+        @loop_proc.delete([e])
+      else
+        @loop_proc.delete(e)
+      end
+    }
+    @proc_max = @loop_proc.size
+
+    cancel if @proc_max == 0
+
+    self
+  end
+
+  def delete_at(n)
+    @loop_proc.delete_at(n)
+    @proc_max = @loop_proc.size
+    cancel if @proc_max == 0
+    self
+  end
+
+  def set_start_proc(sleep=nil, init_proc=nil, *init_args, &b)
+    # set parameters for 'restart'
+    sleep = @init_sleep unless sleep
+
+    if sleep != 'idle' && sleep != :idle && !sleep.kind_of?(Integer)
+      fail ArgumentError, "expect Integer or 'idle' for 1st argument"
+    end
+
+    @init_sleep = sleep
+    @init_proc = init_proc
+    @init_args = init_args
+
+    @init_proc = b if !@init_proc && b
+    @init_proc = proc{|*args| } if @init_sleep > 0 && !@init_proc
+
+    self
+  end
+
+  def start(*init_args, &b)
+    return nil if @running
+
+    Tk_CBTBL[@id] = self
+    @do_loop = @loop_exec
+    @current_pos = 0
+    @return_value = nil
+    @after_id = nil
+
+    @init_sleep = 0
+    @init_proc  = nil
+    @init_args  = nil
+
+    argc = init_args.size
+    if argc > 0
+      sleep = init_args.shift
+      if sleep != 'idle' && sleep != :idle && !sleep.kind_of?(Integer)
+        fail ArgumentError, "expect Integer or 'idle' for 1st argument"
+      end
+      @init_sleep = sleep
+    end
+    @init_proc = init_args.shift if argc > 1
+    @init_args = init_args if argc > 2
+
+    @init_proc = b if !@init_proc && b
+    @init_proc = proc{|*args| } if @init_sleep > 0 && !@init_proc
+
+    @current_sleep = @init_sleep
+    @running = true
+    if @init_proc
+      # if not @init_proc.kind_of?(Proc)
+      if !TkComm._callback_entry?(@init_proc)
+        fail ArgumentError, "Argument '#{@init_proc}' need to be Proc"
+      end
+      @current_proc = @init_proc
+      set_callback(@init_sleep, @init_args)
+      @set_next = false if @in_callback
+    else
+      set_next_callback(@init_args)
+    end
+
+    self
+  end
+
+  def reset(*reset_args)
+    restart() if @running
+
+    if @init_proc
+      @return_value = @init_proc.call(self)
+    else
+      @return_value = nil
+    end
+
+    @current_pos   = 0
+    @current_args  = @init_args
+    @current_script = []
+
+    @set_next = false if @in_callback
+
+    self
+  end
+
+  def restart(*restart_args, &b)
+    cancel if @running
+    if restart_args == [] && !b
+      start(@init_sleep, @init_proc, *@init_args)
+    else
+      start(*restart_args, &b)
+    end
+  end
+
+  def cancel
+    @running = false
+    @wait_var.value = 0
+    tk_call 'after', 'cancel', @after_id if @after_id
+    @after_id = nil
+
+    Tk_CBTBL.delete(@id) ;# for GC
+    self
+  end
+  alias stop cancel
+
+  def continue(wait=nil)
+    fail RuntimeError, "is already running" if @running
+    return restart() if @current_script.empty?
+    sleep, cmd = @current_script
+    fail RuntimeError, "no procedure to continue" unless cmd
+    if wait
+      unless wait.kind_of?(Integer)
+        fail ArgumentError, "expect Integer for 1st argument"
+      end
+      sleep = wait
+    end
+    Tk_CBTBL[@id] = self
+    @running = true
+    @after_id = tk_call_without_enc('after', sleep, cmd)
+    self
+  end
+
+  def skip
+    fail RuntimeError, "is not running now" unless @running
+    cancel
+    Tk_CBTBL[@id] = self
+    @running = true
+    set_next_callback(@current_args)
+    self
+  end
+
+  def info
+    if @after_id
+      inf = tk_split_list(tk_call_without_enc('after', 'info', @after_id))
+      [Tk_CBTBL[inf[0][1]], inf[1]]
+    else
+      nil
+    end
+  end
+
+  def wait(on_thread = true, check_root = false)
+    if $SAFE >= 4
+      fail SecurityError, "can't wait timer at $SAFE >= 4"
+    end
+
+    unless @running
+      if @return_value.kind_of?(Exception)
+        fail @return_value 
+      else
+        return @return_value 
+      end
+    end
+
+    @wait_var.wait(on_thread, check_root)
+    if @return_value.kind_of?(Exception)
+      fail @return_value 
+    else
+      @return_value 
+    end
+  end
+  def eventloop_wait(check_root = false)
+    wait(false, check_root)
+  end
+  def thread_wait(check_root = false)
+    wait(true, check_root)
+  end
+  def tkwait(on_thread = true)
+    wait(on_thread, true)
+  end
+  def eventloop_tkwait
+    wait(false, true)
+  end
+  def thread_tkwait
+    wait(true, true)
+  end
+end
+
+TkAfter = TkTimer
+
+
+class TkRTTimer < TkTimer
+  DEFAULT_OFFSET_LIST_SIZE = 5
+
+  def initialize(*args, &b)
+    super(*args, &b)
+
+    @offset_list = Array.new(DEFAULT_OFFSET_LIST_SIZE){ [0, 0] }
+    @offset_s = 0
+    @offset_u = 0
+    @est_time = nil
+  end
+
+  def start(*args, &b)
+    return nil if @running
+    @est_time = nil
+    @cb_start_time = Time.now
+    super(*args, &b)
+  end
+
+  def cancel
+    super()
+    @est_time = nil
+    @cb_start_time = Time.now
+    self
+  end
+  alias stop cancel
+
+  def continue(wait=nil)
+    fail RuntimeError, "is already running" if @running
+    @cb_start_time = Time.now
+    super(wait)
+  end
+
+  def set_interval(interval)
+    super(interval)
+    @est_time = nil
+  end
+
+  def _offset_ave
+    size = 0
+    d_sec = 0; d_usec = 0
+    @offset_list.each_with_index{|offset, idx|
+      # weight = 1
+      weight = idx + 1
+      size += weight
+      d_sec += offset[0] * weight
+      d_usec += offset[1] * weight
+    }
+    offset_s, mod = d_sec.divmod(size)
+    offset_u = ((mod * 1000000 + d_usec) / size.to_f).round
+    [offset_s, offset_u]
+  end
+  private :_offset_ave
+
+  def set_next_callback(args)
+    if @running == false || @proc_max == 0 || @do_loop == 0
+      Tk_CBTBL.delete(@id) ;# for GC
+      @running = false
+      @wait_var.value = 0
+      return
+    end
+    if @current_pos >= @proc_max
+      if @do_loop < 0 || (@do_loop -= 1) > 0
+        @current_pos = 0
+      else
+        Tk_CBTBL.delete(@id) ;# for GC
+        @running = false
+        @wait_var.value = 0
+        return
+      end
+    end
+
+    @current_args = args
+
+    cmd, *cmd_args = @loop_proc[@current_pos]
+    @current_pos += 1
+    @current_proc = cmd
+
+    @offset_s, @offset_u = _offset_ave
+
+    if TkComm._callback_entry?(@sleep_time)
+      sleep = @sleep_time.call(self)
+    else
+      sleep = @sleep_time
+    end
+
+    if @est_time
+      @est_time = Time.at(@est_time.to_i, @est_time.usec + sleep*1000)
+    else
+      @est_time = Time.at(@cb_start_time.to_i, 
+                          @cb_start_time.usec + sleep*1000)
+    end
+
+    now = Time.now
+    real_sleep = ((@est_time.to_i - now.to_i + @offset_s)*1000.0 + 
+                  (@est_time.usec - now.usec + @offset_u)/1000.0).round
+    if real_sleep <= 0
+      real_sleep = 0
+      @offset_s = now.to_i
+      @offset_u = now.usec
+    end
+    @current_sleep = real_sleep
+
+    set_callback(real_sleep, cmd_args)
+  end
+
+  def cb_call
+    if @est_time
+      @offset_list.shift
+
+      @cb_start_time = Time.now
+
+      if @current_sleep == 0
+        @offset_list.push([
+                            @offset_s - @cb_start_time.to_i, 
+                            @offset_u - @cb_start_time.usec
+                          ])
+      else
+        @offset_list.push([
+                            @offset_s + (@est_time.to_i - @cb_start_time.to_i),
+                            @offset_u + (@est_time.usec - @cb_start_time.usec)
+                          ])
+      end
+    end
+
+    @cb_cmd.call
+  end
+end
-- 
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