mingw/lib/tk8.4/demos/style.tcl

   1 # style.tcl --
   2 #
   3 # This demonstration script creates a text widget that illustrates the
   4 # various display styles that may be set for tags.
   5 #
   6 # RCS: @(#) $Id: style.tcl,v 1.2 1998/09/14 18:23:30 stanton Exp $
   7
   8 if {![info exists widgetDemo]} {
   9     error "This script should be run from the \"widget\" demo."
  10 }
  11
  12 set w .style
  13 catch {destroy $w}
  14 toplevel $w
  15 wm title $w "Text Demonstration - Display Styles"
  16 wm iconname $w "style"
  17 positionWindow $w
  18
  19 frame $w.buttons
  20 pack $w.buttons -side bottom -fill x -pady 2m
  21 button $w.buttons.dismiss -text Dismiss -command "destroy $w"
  22 button $w.buttons.code -text "See Code" -command "showCode $w"
  23 pack $w.buttons.dismiss $w.buttons.code -side left -expand 1
  24
  25 text $w.text -yscrollcommand "$w.scroll set" -setgrid true \
  26         -width 70 -height 32 -wrap word
  27 scrollbar $w.scroll -command "$w.text yview"
  28 pack $w.scroll -side right -fill y
  29 pack $w.text -expand yes -fill both
  30
  31 # Set up display styles
  32
  33 $w.text tag configure bold -font {Courier 12 bold italic}
  34 $w.text tag configure big -font {Courier 14 bold}
  35 $w.text tag configure verybig -font {Helvetica 24 bold}
  36 if {[winfo depth $w] > 1} {
  37     $w.text tag configure color1 -background #a0b7ce
  38     $w.text tag configure color2 -foreground red
  39     $w.text tag configure raised -relief raised -borderwidth 1
  40     $w.text tag configure sunken -relief sunken -borderwidth 1
  41 } else {
  42     $w.text tag configure color1 -background black -foreground white
  43     $w.text tag configure color2 -background black -foreground white
  44     $w.text tag configure raised -background white -relief raised \
  45             -borderwidth 1
  46     $w.text tag configure sunken -background white -relief sunken \
  47             -borderwidth 1
  48 }
  49 $w.text tag configure bgstipple -background black -borderwidth 0 \
  50         -bgstipple gray12
  51 $w.text tag configure fgstipple -fgstipple gray50
  52 $w.text tag configure underline -underline on
  53 $w.text tag configure overstrike -overstrike on
  54 $w.text tag configure right -justify right
  55 $w.text tag configure center -justify center
  56 $w.text tag configure super -offset 4p -font {Courier 10}
  57 $w.text tag configure sub -offset -2p -font {Courier 10}
  58 $w.text tag configure margins -lmargin1 12m -lmargin2 6m -rmargin 10m
  59 $w.text tag configure spacing -spacing1 10p -spacing2 2p \
  60         -lmargin1 12m -lmargin2 6m -rmargin 10m
  61
  62 $w.text insert end {Text widgets like this one allow you to display information in a
  63 variety of styles.  Display styles are controlled using a mechanism
  64 called }
  65 $w.text insert end tags bold
  66 $w.text insert end {. Tags are just textual names that you can apply to one
  67 or more ranges of characters within a text widget.  You can configure
  68 tags with various display styles.  If you do this, then the tagged
  69 characters will be displayed with the styles you chose.  The
  70 available display styles are:
  71 }
  72 $w.text insert end "\n1. Font." big
  73 $w.text insert end "  You can choose any X font, "
  74 $w.text insert end large verybig
  75 $w.text insert end " or "
  76 $w.text insert end "small.\n"
  77 $w.text insert end "\n2. Color." big
  78 $w.text insert end "  You can change either the "
  79 $w.text insert end background color1
  80 $w.text insert end " or "
  81 $w.text insert end foreground color2
  82 $w.text insert end "\ncolor, or "
  83 $w.text insert end both {color1 color2}
  84 $w.text insert end ".\n"
  85 $w.text insert end "\n3. Stippling." big
  86 $w.text insert end "  You can cause either the "
  87 $w.text insert end background bgstipple
  88 $w.text insert end " or "
  89 $w.text insert end foreground fgstipple
  90 $w.text insert end {
  91 information to be drawn with a stipple fill instead of a solid fill.
  92 }
  93 $w.text insert end "\n4. Underlining." big
  94 $w.text insert end "  You can "
  95 $w.text insert end underline underline
  96 $w.text insert end " ranges of text.\n"
  97 $w.text insert end "\n5. Overstrikes." big
  98 $w.text insert end "  You can "
  99 $w.text insert end "draw lines through" overstrike
 100 $w.text insert end " ranges of text.\n"
 101 $w.text insert end "\n6. 3-D effects." big
 102 $w.text insert end {  You can arrange for the background to be drawn
 103 with a border that makes characters appear either }
 104 $w.text insert end raised raised
 105 $w.text insert end " or "
 106 $w.text insert end sunken sunken
 107 $w.text insert end ".\n"
 108 $w.text insert end "\n7. Justification." big
 109 $w.text insert end " You can arrange for lines to be displayed\n"
 110 $w.text insert end "left-justified,\n"
 111 $w.text insert end "right-justified, or\n" right
 112 $w.text insert end "centered.\n" center
 113 $w.text insert end "\n8. Superscripts and subscripts."  big
 114 $w.text insert end " You can control the vertical\n"
 115 $w.text insert end "position of text to generate superscript effects like 10"
 116 $w.text insert end "n" super
 117 $w.text insert end " or\nsubscript effects like X"
 118 $w.text insert end "i" sub
 119 $w.text insert end ".\n"
 120 $w.text insert end "\n9. Margins." big
 121 $w.text insert end " You can control the amount of extra space left"
 122 $w.text insert end " on\neach side of the text:\n"
 123 $w.text insert end "This paragraph is an example of the use of " margins
 124 $w.text insert end "margins.  It consists of a single line of text " margins
 125 $w.text insert end "that wraps around on the screen.  There are two " margins
 126 $w.text insert end "separate left margin values, one for the first " margins
 127 $w.text insert end "display line associated with the text line, " margins
 128 $w.text insert end "and one for the subsequent display lines, which " margins
 129 $w.text insert end "occur because of wrapping.  There is also a " margins
 130 $w.text insert end "separate specification for the right margin, " margins
 131 $w.text insert end "which is used to choose wrap points for lines.\n" margins
 132 $w.text insert end "\n10. Spacing." big
 133 $w.text insert end " You can control the spacing of lines with three\n"
 134 $w.text insert end "separate parameters.  \"Spacing1\" tells how much "
 135 $w.text insert end "extra space to leave\nabove a line, \"spacing3\" "
 136 $w.text insert end "tells how much space to leave below a line,\nand "
 137 $w.text insert end "if a text line wraps, \"spacing2\" tells how much "
 138 $w.text insert end "space to leave\nbetween the display lines that "
 139 $w.text insert end "make up the text line.\n"
 140 $w.text insert end "These indented paragraphs illustrate how spacing " spacing
 141 $w.text insert end "can be used.  Each paragraph is actually a " spacing
 142 $w.text insert end "single line in the text widget, which is " spacing
 143 $w.text insert end "word-wrapped by the widget.\n" spacing
 144 $w.text insert end "Spacing1 is set to 10 points for this text, " spacing
 145 $w.text insert end "which results in relatively large gaps between " spacing
 146 $w.text insert end "the paragraphs.  Spacing2 is set to 2 points, " spacing
 147 $w.text insert end "which results in just a bit of extra space " spacing
 148 $w.text insert end "within a pararaph.  Spacing3 isn't used " spacing
 149 $w.text insert end "in this example.\n" spacing
 150 $w.text insert end "To see where the space is, select ranges of " spacing
 151 $w.text insert end "text within these paragraphs.  The selection " spacing
 152 $w.text insert end "highlight will cover the extra space." spacing