77 lines
2.1 KiB
Ruby
77 lines
2.1 KiB
Ruby
#!/usr/bin/env ruby
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##
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## buttons.rb
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##
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## demonstrates the simulation of a button array
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##
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## ( based on 'buttons.tcl' included source archive of tktable extension )
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##
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require 'tk'
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require 'tkextlib/tktable'
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# create the table
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tab = TkVariable.new_hash
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rows = 20
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cols = 20
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table = Tk::TkTable.new(:rows=>rows + 1, :cols=>cols + 1,
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:variable=>tab, :titlerows=>1, :titlecols=>1,
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:roworigin=>-1, :colorigin=>-1,
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:colwidth=>4, :width=>8, :height=>8,
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:cursor=>'top_left_arrow', :borderwidth=>2,
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:flashmode=>false, :state=>:disabled)
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sx = table.xscrollbar(TkScrollbar.new)
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sy = table.yscrollbar(TkScrollbar.new)
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Tk.grid(table, sy, :sticky=>:news)
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Tk.grid(sx, :sticky=>:ew)
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Tk.root.grid_columnconfig(0, :weight=>1)
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Tk.root.grid_rowconfig(0, :weight=>1)
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# set up tags for the various states of the buttons
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table.tag_configure('OFF', :bg=>'red', :relief=>:raised)
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table.tag_configure('ON', :bg=>'green', :relief=>:sunken)
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table.tag_configure('sel', :bg=>'gray75', :relief=>:flat)
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# clean up if mouse leaves the widget
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table.bind('Leave', proc{|w| w.selection_clear_all}, '%W')
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# highlight the cell under the mouse
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table.bind('Motion', proc{|w, x, y|
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Tk.callback_break if w.selection_include?(TkComm._at(x,y))
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w.selection_clear_all
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w.selection_set(TkComm._at(x,y))
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Tk.callback_break
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## "break" prevents the call to tkTableCheckBorder
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}, '%W %x %y')
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# mousebutton 1 toggles the value of the cell
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# use of "selection includes" would work here
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table.bind('1', proc{|w, x, y|
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#rc = w.curselection[0]
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rc = w.index(TkComm._at(x,y))
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if tab[rc] == 'ON'
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tab[rc] = 'OFF'
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w.tag_cell('OFF', rc)
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else
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tab[rc] = 'ON'
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w.tag_cell('ON', rc)
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end}, '%W %x %y')
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# inititialize the array, titles, and celltags
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0.step(rows){|i|
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tab[i,-1] = i
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0.step(cols){|j|
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if i == 0
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tab[-1,j] = j
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end
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tab[i,j] = "OFF"
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table.tag_cell('OFF', "#{i},#{j}")
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}
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}
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Tk.mainloop
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