107 lines
2.9 KiB
Ruby
107 lines
2.9 KiB
Ruby
#
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# tktextframe.rb : a sample of TkComposite
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#
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# by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
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#
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require 'tk'
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class TkTextFrame < TkText
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include TkComposite
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def initialize_composite(keys={})
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keys = _symbolkey2str(keys)
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# create scrollbars
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@v_scroll = TkScrollbar.new(@frame, 'orient'=>'vertical')
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@h_scroll = TkScrollbar.new(@frame, 'orient'=>'horizontal')
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# create a text widget
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@text = TkText.new(@frame, 'wrap'=>'none')
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# set default receiver of method calls
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@path = @text.path
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# assign scrollbars
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@text.xscrollbar(@h_scroll)
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@text.yscrollbar(@v_scroll)
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# allignment
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TkGrid.rowconfigure(@frame, 0, 'weight'=>1, 'minsize'=>0)
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TkGrid.columnconfigure(@frame, 0, 'weight'=>1, 'minsize'=>0)
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@text.grid('row'=>0, 'column'=>0, 'sticky'=>'news')
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# scrollbars ON
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vscroll(keys.delete('vscroll'){true})
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hscroll(keys.delete('hscroll'){true})
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# set background of the text widget
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color = keys.delete('textbackground')
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textbackground(color) if color
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# set receiver widgets for configure methods
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delegate('DEFAULT', @text)
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delegate('background', @frame, @h_scroll, @v_scroll)
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delegate('activebackground', @h_scroll, @v_scroll)
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delegate('troughcolor', @h_scroll, @v_scroll)
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delegate('repeatdelay', @h_scroll, @v_scroll)
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delegate('repeatinterval', @h_scroll, @v_scroll)
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delegate('borderwidth', @frame)
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delegate('relief', @frame)
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# do configure
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configure keys unless keys.empty?
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end
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private :initialize_composite
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# set background color of text widget
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def textbackground(color = nil)
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if color
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@text.background(color)
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else
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@text.background
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end
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end
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# vertical scrollbar : ON/OFF
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def vscroll(mode)
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st = TkGrid.info(@v_scroll)
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if mode && st.size == 0 then
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@v_scroll.grid('row'=>0, 'column'=>1, 'sticky'=>'ns')
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elsif !mode && st.size != 0 then
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@v_scroll.ungrid
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end
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self
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end
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# horizontal scrollbar : ON/OFF
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def hscroll(mode, wrap_mode="char")
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st = TkGrid.info(@h_scroll)
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if mode && st.size == 0 then
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@h_scroll.grid('row'=>1, 'column'=>0, 'sticky'=>'ew')
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wrap 'none' # => self.wrap('none')
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elsif !mode && st.size != 0 then
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@h_scroll.ungrid
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wrap wrap_mode # => self.wrap(wrap_mode)
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end
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self
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end
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end
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################################################
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# test
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################################################
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if __FILE__ == $0
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f = TkFrame.new.pack('fill'=>'x')
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t = TkTextFrame.new.pack
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TkButton.new(f, 'text'=>'vscr OFF',
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'command'=>proc{t.vscroll(false)}).pack('side'=>'right')
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TkButton.new(f, 'text'=>'vscr ON',
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'command'=>proc{t.vscroll(true)}).pack('side'=>'right')
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TkButton.new(f, 'text'=>'hscr ON',
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'command'=>proc{t.hscroll(true)}).pack('side'=>'left')
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TkButton.new(f, 'text'=>'hscr OFF',
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'command'=>proc{t.hscroll(false)}).pack('side'=>'left')
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Tk.mainloop
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end
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