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