385 lines
14 KiB
Ruby
385 lines
14 KiB
Ruby
#
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# text (embedded windows) widget demo 2 (called by 'widget')
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#
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# delete toplevel widget
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if defined?($twind2_demo) && $twind2_demo
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$twind2_demo.destroy
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$twind2_demo = nil
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end
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# demo toplevel widget
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$twind2_demo = TkToplevel.new {|w|
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title("Text Demonstration - Embedded Windows 2")
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iconname("Embedded Windows")
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positionWindow(w)
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}
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base_frame = TkFrame.new($twind2_demo).pack(:fill=>:both, :expand=>true)
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# frame
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$twind2_buttons = TkFrame.new(base_frame) {|frame|
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TkGrid(TkFrame.new(frame, :height=>2, :relief=>:sunken, :bd=>2),
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:columnspan=>4, :row=>0, :sticky=>'ew', :pady=>2)
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TkGrid('x',
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TkButton.new(frame, :text=>'See Code',
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:image=>$image['view'], :compound=>:left,
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:command=>proc{showCode 'twind2'}),
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TkButton.new(frame, :text=>'Dismiss',
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:image=>$image['delete'], :compound=>:left,
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:command=>proc{
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tmppath = $twind2_demo
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$twind2_demo = nil
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$showVarsWin[tmppath.path] = nil
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tmppath.destroy
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}),
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:padx=>4, :pady=>4)
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frame.grid_columnconfigure(0, :weight=>1)
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}
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$twind2_buttons.pack('side'=>'bottom', 'fill'=>'x', 'pady'=>'2m')
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# frame
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$twind2_text = nil
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TkFrame.new(base_frame, 'highlightthickness'=>2, 'borderwidth'=>2,
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'relief'=>'sunken') {|f|
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$twind2_text = TkText.new(f, 'setgrid'=>true, 'font'=>$font,
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# 'width'=>'70', 'height'=>35, 'wrap'=>'word',
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'width'=>'70', 'height'=>35, 'wrap'=>'char',
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'highlightthickness'=>0, 'borderwidth'=>0 ){|t|
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TkScrollbar.new(f) {|s|
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command proc{|*args| t.yview(*args)}
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t.yscrollcommand proc{|first,last| s.set first,last}
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}.pack('side'=>'right', 'fill'=>'y')
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}.pack('expand'=>'yes', 'fill'=>'both')
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}.pack('expand'=>'yes', 'fill'=>'both')
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# text tags
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$tag2_center = TkTextTag.new($twind2_text,
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'justify' =>'center',
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'spacing1'=>'5m',
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'spacing3'=>'5m' )
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$tag2_buttons = TkTextTag.new($twind2_text,
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'lmargin1'=>'1c',
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'lmargin2'=>'1c',
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'rmargin' =>'1c',
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'spacing1'=>'3m',
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'spacing2'=>0,
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'spacing3'=>0 )
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# insert text
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$twind2_text.insert('end',
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'A text widget can contain many different kinds of items, ')
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$twind2_text.insert('end',
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"both active and passive. It can lay these out in various ")
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$twind2_text.insert('end',
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"ways, with wrapping, tabs, centering, etc. In addition, ")
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$twind2_text.insert('end',
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"when the contents are too big for the window, smooth ")
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$twind2_text.insert('end', "scrolling in all directions is provided.\n\n")
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$twind2_text.insert('end', "A text widget can contain other widgets embedded ")
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$twind2_text.insert('end', "it. These are called \"embedded windows\", ")
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$twind2_text.insert('end', "and they can consist of arbitrary widgets. ")
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$twind2_text.insert('end', "For example, here are two embedded button ")
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$twind2_text.insert('end', "widgets. You can click on the first button to ")
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TkTextWindow.new($twind2_text, 'end',
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'window'=>TkButton.new($twind2_text) {
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text 'ON'
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command proc{textWindOn2 $twind2_text,$twind2_buttons}
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cursor 'top_left_arrow'
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})
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$twind2_text.insert('end', " horizontal scrolling, which also turns off ")
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$twind2_text.insert('end', "word wrapping. Or, you can click on the second ")
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$twind2_text.insert('end', "button to\n")
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TkTextWindow.new($twind2_text, 'end',
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'window'=>TkButton.new($twind2_text) {
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text 'OFF'
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command proc{textWindOff2 $twind2_text}
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cursor 'top_left_arrow'
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})
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$twind2_text.insert('end',
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" horizontal scrolling and turn back on word wrapping.\n\n")
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$twind2_text.insert('end', "Or, here is another example. If you ")
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TkTextWindow.new($twind2_text, 'end',
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'window'=>TkButton.new($twind2_text) {
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text 'Click Here'
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command proc{textWindPlot2 $twind2_text}
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cursor 'top_left_arrow'
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})
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$twind2_text.insert('end',
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" a canvas displaying an x-y plot will appear right here.")
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$mark2_plot = TkTextMark.new($twind2_text, 'insert')
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$mark2_plot.gravity='left'
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$twind2_text.insert('end',
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" You can drag the data points around with the mouse, ")
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$twind2_text.insert('end', "or you can click here to ")
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TkTextWindow.new($twind2_text, 'end',
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'window'=>TkButton.new($twind2_text) {
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text 'Delete'
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command proc{textWindDel2 $twind2_text}
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cursor 'top_left_arrow'
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})
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$twind2_text.insert('end', " the plot again.\n\n")
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$twind2_text.insert('end',
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"You may also find it useful to put embedded windows in ")
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$twind2_text.insert('end',
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"a text without any actual text. In this case the ")
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$twind2_text.insert('end', "text widget acts like a geometry manager. For ")
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$twind2_text.insert('end',
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"example, here is a collection of buttons laid out ")
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$twind2_text.insert('end',
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"neatly into rows by the text widget. These buttons ")
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$twind2_text.insert('end',
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"can be used to change the background color of the ")
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$twind2_text.insert('end', "text widget (\"Default\" restores the color to ")
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$twind2_text.insert('end',
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"its default). If you click on the button labeled ")
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$twind2_text.insert('end', "\"Short\", it changes to a longer string so that ")
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$twind2_text.insert('end', "you can see how the text widget automatically ")
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$twind2_text.insert('end', "changes the layout. Click on the button again ")
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$twind2_text.insert('end', "to restore the short string.\n")
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btn_default = TkButton.new($twind2_text) {|b|
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text 'Default'
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command proc{embDefBg2 $twind2_text}
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cursor 'top_left_arrow'
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}
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TkTextWindow.new($twind2_text, 'end', 'window'=>btn_default, 'padx'=>3)
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embToggle = TkVariable.new('Short')
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TkTextWindow.new($twind2_text, 'end',
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'window'=>TkCheckButton.new($twind2_text) {
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textvariable embToggle
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indicatoron 0
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variable embToggle
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onvalue 'A much longer string'
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offvalue 'Short'
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cursor 'top_left_arrow'
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pady 5
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padx 2
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},
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'padx'=>3,
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'pady'=>2 )
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[ 'AntiqueWhite3', 'Bisque1', 'Bisque2', 'Bisque3', 'Bisque4',
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'SlateBlue3', 'RoyalBlue1', 'SteelBlue2', 'DeepSkyBlue3', 'LightBlue1',
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'DarkSlateGray1', 'Aquamarine2', 'DarkSeaGreen2', 'SeaGreen1',
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'Yellow1', 'IndianRed1', 'IndianRed2', 'Tan1', 'Tan4'
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].each{|twind_color|
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TkTextWindow.new($twind2_text, 'end',
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'window'=>TkButton.new($twind2_text) {
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text twind_color
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cursor 'top_left_arrow'
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command proc{$twind2_text.bg twind_color}
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},
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'padx'=>3,
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'pady'=>2 )
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}
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$tag2_buttons.add(btn_default, 'end')
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$text_normal2 = {}
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$text_normal2['border'] = $twind2_text.cget('borderwidth')
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$text_normal2['highlight'] = $twind2_text.cget('highlightthickness')
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$text_normal2['pad'] = $twind2_text.cget('padx')
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$twind2_text.insert('end', "\nYou can also change the usual border width and ")
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$twind2_text.insert('end', "highlightthickness and padding.\n")
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TkTextWindow.new($twind2_text, 'end',
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'window'=>TkButton.new($twind2_text, :text=>"Big borders",
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:cursor=>'top_left_arrow',
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'command'=>proc{
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textWinBigB2 $twind2_text
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}))
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TkTextWindow.new($twind2_text, 'end',
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'window'=>TkButton.new($twind2_text, :text=>"Small borders",
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:cursor=>'top_left_arrow',
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'command'=>proc{
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textWinSmallB2 $twind2_text
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}))
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TkTextWindow.new($twind2_text, 'end',
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'window'=>TkButton.new($twind2_text, :text=>"Big highlight",
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:cursor=>'top_left_arrow',
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'command'=>proc{
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textWinBigH2 $twind2_text
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}))
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TkTextWindow.new($twind2_text, 'end',
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'window'=>TkButton.new($twind2_text, :text=>"Small highlight",
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:cursor=>'top_left_arrow',
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'command'=>proc{
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textWinSmallH2 $twind2_text
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}))
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TkTextWindow.new($twind2_text, 'end',
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'window'=>TkButton.new($twind2_text, :text=>"Big pad",
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:cursor=>'top_left_arrow',
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'command'=>proc{
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textWinBigP2 $twind2_text
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}))
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TkTextWindow.new($twind2_text, 'end',
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'window'=>TkButton.new($twind2_text, :text=>"Small pad",
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:cursor=>'top_left_arrow',
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'command'=>proc{
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textWinSmallP2 $twind2_text
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}))
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$twind2_text.insert('end',
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"\n\nFinally, images fit comfortably in text widgets too:")
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TkTextImage.new($twind2_text, 'end',
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'image'=>TkBitmapImage.new(:file=>[
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$demo_dir, '..',
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'images', 'face.xbm'
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].join(File::Separator)))
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# methods
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def textWinBigB2(w)
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w.borderwidth 15
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end
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def textWinSmallB2(w)
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w.borderwidth $text_normal2['border']
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end
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def textWinBigH2(w)
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w.highlightthickness 15
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end
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def textWinSmallH2(w)
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w.highlightthickness $text_normal2['highlight']
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end
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def textWinBigP2(w)
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w.configure(:padx=>15, :pady=>15)
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end
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def textWinSmallP2(w)
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w.configure(:padx=>$text_normal2['pad'], :pady=>$text_normal2['pad'])
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end
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def textWindOn2 (w,f)
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if defined? $twind2_scroll
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begin
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$twind2_scroll.destroy
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rescue
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end
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$twind2_scroll = nil
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end
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base = TkWinfo.parent( TkWinfo.parent(w) )
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$twind2_scroll = TkScrollbar.new(base) {|s|
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orient 'horizontal'
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command proc{|*args| w.xview(*args)}
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w.xscrollcommand proc{|first,last| s.set first,last}
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w.wrap 'none'
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pack('after'=>f, 'side'=>'bottom', 'fill'=>'x')
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}
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return nil
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end
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def textWindOff2 (w)
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if defined? $twind2_scroll
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begin
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$twind2_scroll.destroy
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rescue
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end
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$twind2_scroll = nil
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end
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w.xscrollcommand ''
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#w.wrap 'word'
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w.wrap 'char'
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end
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def textWindPlot2 (t)
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if (defined? $twind2_plot) && (TkWinfo.exist?($twind2_plot))
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return
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end
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$twind2_plot = TkCanvas.new(t) {
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relief 'sunken'
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width 450
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height 300
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cursor 'top_left_arrow'
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}
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#font = '-Adobe-Helvetica-Medium-R-Normal--*-180-*-*-*-*-*-*'
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font = 'Helvetica 18'
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TkcLine.new($twind2_plot, 100, 250, 400, 250, 'width'=>2)
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TkcLine.new($twind2_plot, 100, 250, 100, 50, 'width'=>2)
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TkcText.new($twind2_plot, 225, 20,
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'text'=>"A Simple Plot", 'font'=>font, 'fill'=>'brown')
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(0..10).each {|i|
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x = 100 + (i * 30)
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TkcLine.new($twind2_plot, x, 250, x, 245, 'width'=>2)
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TkcText.new($twind2_plot, x, 254,
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'text'=>10*i, 'font'=>font, 'anchor'=>'n')
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}
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(0..5).each {|i|
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y = 250 - (i * 40)
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TkcLine.new($twind2_plot, 100, y, 105, y, 'width'=>2)
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TkcText.new($twind2_plot, 96, y,
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'text'=>"#{i*50}.0", 'font'=>font, 'anchor'=>'e')
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}
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for xx, yy in [[12,56],[20,94],[33,98],[32,120],[61,180],[75,160],[98,223]]
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x = 100 + (3*xx)
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y = 250 - (4*yy)/5
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item = TkcOval.new($twind2_plot, x-6, y-6, x+6, y+6,
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'width'=>1, 'outline'=>'black', 'fill'=>'SkyBlue2')
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item.addtag 'point'
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end
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$twind2_plot.itembind('point', 'Any-Enter',
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proc{$twind2_plot.itemconfigure 'current', 'fill', 'red'})
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$twind2_plot.itembind('point', 'Any-Leave',
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proc{$twind2_plot.itemconfigure 'current', 'fill', 'SkyBlue2'})
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$twind2_plot.itembind('point', '1',
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proc{|x,y| embPlotDown2 $twind2_plot,x,y}, "%x %y")
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$twind2_plot.itembind('point', 'ButtonRelease-1',
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proc{$twind2_plot.dtag 'selected'})
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$twind2_plot.bind('B1-Motion',
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proc{|x,y| embPlotMove2 $twind2_plot,x,y}, "%x %y")
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while ($twind2_text.get($mark2_plot) =~ /[ \t\n]/)
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$twind2_text.delete $mark2_plot
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end
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$twind2_text.insert $mark2_plot,"\n"
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TkTextWindow.new($twind2_text, $mark2_plot, 'window'=>$twind2_plot)
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$tag2_center.add $mark2_plot
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$twind2_text.insert $mark2_plot,"\n"
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end
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$embPlot2 = {'lastX'=>0, 'lastY'=>0}
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def embPlotDown2 (w, x, y)
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w.dtag 'selected'
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w.addtag_withtag 'selected', 'current'
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w.raise 'current'
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$embPlot2['lastX'] = x
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$embPlot2['lastY'] = y
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end
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def embPlotMove2 (w, x, y)
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w.move 'selected', x - $embPlot2['lastX'], y - $embPlot2['lastY']
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$embPlot2['lastX'] = x
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$embPlot2['lastY'] = y
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end
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def textWindDel2 (w)
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if (defined? $twind2_text) && TkWinfo.exist?($twind2_plot)
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$twind2_text.delete $twind2_plot
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$twind2_plot = nil
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while ($twind2_text.get($mark2_plot) =~ /[ \t\n]/)
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$twind2_text.delete $mark2_plot
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end
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$twind2_text.insert $mark2_plot," "
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end
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end
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def embDefBg2 (w)
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w['background'] = w.configinfo('background')[3]
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end
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