diff options
Diffstat (limited to 'ruby_1_8_5/ext/tk/lib/tkextlib/tcllib/autoscroll.rb')
-rw-r--r-- | ruby_1_8_5/ext/tk/lib/tkextlib/tcllib/autoscroll.rb | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/ruby_1_8_5/ext/tk/lib/tkextlib/tcllib/autoscroll.rb b/ruby_1_8_5/ext/tk/lib/tkextlib/tcllib/autoscroll.rb new file mode 100644 index 0000000000..6940a9174c --- /dev/null +++ b/ruby_1_8_5/ext/tk/lib/tkextlib/tcllib/autoscroll.rb @@ -0,0 +1,158 @@ +# +# tkextlib/tcllib/autoscroll.rb +# by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp) +# +# * Part of tcllib extension +# * Provides for a scrollbar to automatically mapped and unmapped as needed +# +# (The following is the original description of the library.) +# +# This package allows scrollbars to be mapped and unmapped as needed +# depending on the size and content of the scrollbars scrolled widget. +# The scrollbar must be managed by either pack or grid, other geometry +# managers are not supported. +# +# When managed by pack, any geometry changes made in the scrollbars parent +# between the time a scrollbar is unmapped, and when it is mapped will be +# lost. It is an error to destroy any of the scrollbars siblings while the +# scrollbar is unmapped. When managed by grid, if anything becomes gridded +# in the same row and column the scrollbar occupied it will be replaced by +# the scrollbar when remapped. +# +# This package may be used on any scrollbar-like widget as long as it +# supports the set subcommand in the same style as scrollbar. If the set +# subcommand is not used then this package will have no effect. +# + +require 'tk' +require 'tk/scrollbar' +require 'tkextlib/tcllib.rb' + +module Tk + module Tcllib + module Autoscroll + PACKAGE_NAME = 'autoscroll'.freeze + def self.package_name + PACKAGE_NAME + end + + def self.package_version + begin + TkPackage.require('autoscroll') + rescue + '' + end + end + + def self.not_available + fail RuntimeError, "'tkextlib/tcllib/autoscroll' extension is not available on your current environment." + end + + def self.autoscroll(win) + Tk::Tcllib::Autoscroll.not_available + end + + def self.unautoscroll(win) + Tk::Tcllib::Autoscroll.not_available + end + end + end +end + +module Tk + module Scrollable + def autoscroll(mode = nil) + case mode + when :x, 'x' + if @xscrollbar + Tk::Tcllib::Autoscroll.autoscroll(@xscrollbar) + end + when :y, 'y' + if @yscrollbar + Tk::Tcllib::Autoscroll.autoscroll(@yscrollbar) + end + when nil, :both, 'both' + if @xscrollbar + Tk::Tcllib::Autoscroll.autoscroll(@xscrollbar) + end + if @yscrollbar + Tk::Tcllib::Autoscroll.autoscroll(@yscrollbar) + end + else + fail ArgumentError, "'x', 'y' or 'both' (String or Symbol) is expected" + end + self + end + def unautoscroll(mode = nil) + case mode + when :x, 'x' + if @xscrollbar + Tk::Tcllib::Autoscroll.unautoscroll(@xscrollbar) + end + when :y, 'y' + if @yscrollbar + Tk::Tcllib::Autoscroll.unautoscroll(@yscrollbar) + end + when nil, :both, 'both' + if @xscrollbar + Tk::Tcllib::Autoscroll.unautoscroll(@xscrollbar) + end + if @yscrollbar + Tk::Tcllib::Autoscroll.unautoscroll(@yscrollbar) + end + else + fail ArgumentError, "'x', 'y' or 'both' (String or Symbol) is expected" + end + self + end + end +end + +class TkScrollbar + def autoscroll + # Arranges for the already existing scrollbar to be mapped + # and unmapped as needed. + #tk_call_without_enc('::autoscroll::autoscroll', @path) + Tk::Tcllib::Autoscroll.autoscroll(self) + self + end + def unautoscroll + # Returns the scrollbar to its original static state. + #tk_call_without_enc('::autoscroll::unautoscroll', @path) + Tk::Tcllib::Autoscroll.unautoscroll(self) + self + end +end + +# TkPackage.require('autoscroll', '1.0') +# TkPackage.require('autoscroll', '1.1') +TkPackage.require('autoscroll') + +module Tk + module Tcllib + class << Autoscroll + undef not_available + end + + module Autoscroll + extend TkCore + def self.autoscroll(win) + tk_call_without_enc('::autoscroll::autoscroll', win.path) + end + + def self.unautoscroll(win) + tk_call_without_enc('::autoscroll::unautoscroll', win.path) + end + + def self.wrap + # v1.1 + tk_call_without_enc('::autoscroll::wrap') + end + + def self.unwrap + # v1.1 + tk_call_without_enc('::autoscroll::unwrap') + end + end + end +end |