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156 lines
6.8 KiB
156 lines
6.8 KiB
# style.tcl --
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#
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# This demonstration script creates a text widget that illustrates the
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# various display styles that may be set for tags.
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if {![info exists widgetDemo]} {
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error "This script should be run from the \"widget\" demo."
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}
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package require Tk
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set w .style
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catch {destroy $w}
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toplevel $w
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wm title $w "Text Demonstration - Display Styles"
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wm iconname $w "style"
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positionWindow $w
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## See Code / Dismiss buttons
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set btns [addSeeDismiss $w.buttons $w]
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pack $btns -side bottom -fill x
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# Only set the font family in one place for simplicity and consistency
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set family Courier
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text $w.text -yscrollcommand "$w.scroll set" -setgrid true \
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-width 70 -height 32 -wrap word -font "$family 12"
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ttk::scrollbar $w.scroll -command "$w.text yview"
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pack $w.scroll -side right -fill y
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pack $w.text -expand yes -fill both
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# Set up display styles
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$w.text tag configure bold -font "$family 12 bold italic"
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$w.text tag configure big -font "$family 14 bold"
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$w.text tag configure verybig -font "Helvetica 24 bold"
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$w.text tag configure tiny -font "Times 8 bold"
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if {[winfo depth $w] > 1} {
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$w.text tag configure color1 -background #a0b7ce
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$w.text tag configure color2 -foreground red
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$w.text tag configure raised -relief raised -borderwidth 1
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$w.text tag configure sunken -relief sunken -borderwidth 1
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} else {
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$w.text tag configure color1 -background black -foreground white
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$w.text tag configure color2 -background black -foreground white
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$w.text tag configure raised -background white -relief raised \
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-borderwidth 1
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$w.text tag configure sunken -background white -relief sunken \
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-borderwidth 1
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}
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$w.text tag configure bgstipple -background black -borderwidth 0 \
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-bgstipple gray12
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$w.text tag configure fgstipple -fgstipple gray50
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$w.text tag configure underline -underline on
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$w.text tag configure overstrike -overstrike on
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$w.text tag configure right -justify right
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$w.text tag configure center -justify center
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$w.text tag configure super -offset 4p -font "$family 10"
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$w.text tag configure sub -offset -2p -font "$family 10"
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$w.text tag configure margins -lmargin1 12m -lmargin2 6m -rmargin 10m
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$w.text tag configure spacing -spacing1 10p -spacing2 2p \
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-lmargin1 12m -lmargin2 6m -rmargin 10m
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$w.text insert end {Text widgets like this one allow you to display information in a
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variety of styles. Display styles are controlled using a mechanism
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called }
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$w.text insert end tags bold
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$w.text insert end {. Tags are just textual names that you can apply to one
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or more ranges of characters within a text widget. You can configure
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tags with various display styles. If you do this, then the tagged
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characters will be displayed with the styles you chose. The
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available display styles are:
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}
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$w.text insert end "\n1. Font." big
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$w.text insert end " You can choose any system font, "
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$w.text insert end large verybig
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$w.text insert end " or "
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$w.text insert end "small" tiny ".\n"
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$w.text insert end "\n2. Color." big
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$w.text insert end " You can change either the "
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$w.text insert end background color1
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$w.text insert end " or "
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$w.text insert end foreground color2
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$w.text insert end "\ncolor, or "
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$w.text insert end both {color1 color2}
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$w.text insert end ".\n"
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$w.text insert end "\n3. Stippling." big
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$w.text insert end " You can cause either the "
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$w.text insert end background bgstipple
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$w.text insert end " or "
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$w.text insert end foreground fgstipple
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$w.text insert end {
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information to be drawn with a stipple fill instead of a solid fill.
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}
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$w.text insert end "\n4. Underlining." big
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$w.text insert end " You can "
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$w.text insert end underline underline
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$w.text insert end " ranges of text.\n"
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$w.text insert end "\n5. Overstrikes." big
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$w.text insert end " You can "
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$w.text insert end "draw lines through" overstrike
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$w.text insert end " ranges of text.\n"
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$w.text insert end "\n6. 3-D effects." big
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$w.text insert end { You can arrange for the background to be drawn
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with a border that makes characters appear either }
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$w.text insert end raised raised
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$w.text insert end " or "
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$w.text insert end sunken sunken
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$w.text insert end ".\n"
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$w.text insert end "\n7. Justification." big
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$w.text insert end " You can arrange for lines to be displayed\n"
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$w.text insert end "left-justified,\n"
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$w.text insert end "right-justified, or\n" right
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$w.text insert end "centered.\n" center
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$w.text insert end "\n8. Superscripts and subscripts." big
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$w.text insert end " You can control the vertical\n"
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$w.text insert end "position of text to generate superscript effects like 10"
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$w.text insert end "n" super
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$w.text insert end " or\nsubscript effects like X"
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$w.text insert end "i" sub
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$w.text insert end ".\n"
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$w.text insert end "\n9. Margins." big
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$w.text insert end " You can control the amount of extra space left"
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$w.text insert end " on\neach side of the text:\n"
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$w.text insert end "This paragraph is an example of the use of " margins
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$w.text insert end "margins. It consists of a single line of text " margins
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$w.text insert end "that wraps around on the screen. There are two " margins
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$w.text insert end "separate left margin values, one for the first " margins
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$w.text insert end "display line associated with the text line, " margins
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$w.text insert end "and one for the subsequent display lines, which " margins
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$w.text insert end "occur because of wrapping. There is also a " margins
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$w.text insert end "separate specification for the right margin, " margins
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$w.text insert end "which is used to choose wrap points for lines.\n" margins
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$w.text insert end "\n10. Spacing." big
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$w.text insert end " You can control the spacing of lines with three\n"
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$w.text insert end "separate parameters. \"Spacing1\" tells how much "
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$w.text insert end "extra space to leave\nabove a line, \"spacing3\" "
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$w.text insert end "tells how much space to leave below a line,\nand "
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$w.text insert end "if a text line wraps, \"spacing2\" tells how much "
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$w.text insert end "space to leave\nbetween the display lines that "
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$w.text insert end "make up the text line.\n"
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$w.text insert end "These indented paragraphs illustrate how spacing " spacing
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$w.text insert end "can be used. Each paragraph is actually a " spacing
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$w.text insert end "single line in the text widget, which is " spacing
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$w.text insert end "word-wrapped by the widget.\n" spacing
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$w.text insert end "Spacing1 is set to 10 points for this text, " spacing
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$w.text insert end "which results in relatively large gaps between " spacing
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$w.text insert end "the paragraphs. Spacing2 is set to 2 points, " spacing
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$w.text insert end "which results in just a bit of extra space " spacing
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$w.text insert end "within a pararaph. Spacing3 isn't used " spacing
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$w.text insert end "in this example.\n" spacing
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$w.text insert end "To see where the space is, select ranges of " spacing
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$w.text insert end "text within these paragraphs. The selection " spacing
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$w.text insert end "highlight will cover the extra space." spacing
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