English
- # twind.tcl --
- #
- # This demonstration script creates a text widget with a bunch of
- # embedded windows.
- #
- # RCS: @(#) $Id: twind.tcl,v 1.3 2001/06/14 10:56:58 dkf Exp $
- if {![info exists widgetDemo]} {
- error "This script should be run from the "widget" demo."
- }
- set w .twind
- catch {destroy $w}
- toplevel $w
- wm title $w "Text Demonstration - Embedded Windows"
- wm iconname $w "Embedded Windows"
- positionWindow $w
- frame $w.buttons
- pack $w.buttons -side bottom -fill x -pady 2m
- button $w.buttons.dismiss -text Dismiss -command "destroy $w"
- button $w.buttons.code -text "See Code" -command "showCode $w"
- pack $w.buttons.dismiss $w.buttons.code -side left -expand 1
- frame $w.f -highlightthickness 2 -borderwidth 2 -relief sunken
- set t $w.f.text
- text $t -yscrollcommand "$w.scroll set" -setgrid true -font $font -width 70
- -height 35 -wrap word -highlightthickness 0 -borderwidth 0
- pack $t -expand yes -fill both
- scrollbar $w.scroll -command "$t yview"
- pack $w.scroll -side right -fill y
- pack $w.f -expand yes -fill both
- $t tag configure center -justify center -spacing1 5m -spacing3 5m
- $t tag configure buttons -lmargin1 1c -lmargin2 1c -rmargin 1c
- -spacing1 3m -spacing2 0 -spacing3 0
- button $t.on -text "Turn On" -command "textWindOn $w"
- -cursor top_left_arrow
- button $t.off -text "Turn Off" -command "textWindOff $w"
- -cursor top_left_arrow
- button $t.click -text "Click Here" -command "textWindPlot $t"
- -cursor top_left_arrow
- button $t.delete -text "Delete" -command "textWindDel $w"
- -cursor top_left_arrow
- $t insert end "A text widget can contain other widgets embedded "
- $t insert end "it. These are called "embedded windows", "
- $t insert end "and they can consist of arbitrary widgets. "
- $t insert end "For example, here are two embedded button "
- $t insert end "widgets. You can click on the first button to "
- $t window create end -window $t.on
- $t insert end " horizontal scrolling, which also turns off "
- $t insert end "word wrapping. Or, you can click on the second "
- $t insert end "button ton"
- $t window create end -window $t.off
- $t insert end " horizontal scrolling and turn back on word wrapping.nn"
- $t insert end "Or, here is another example. If you "
- $t window create end -window $t.click
- $t insert end " a canvas displaying an x-y plot will appear right here."
- $t mark set plot insert
- $t mark gravity plot left
- $t insert end " You can drag the data points around with the mouse, "
- $t insert end "or you can click here to "
- $t window create end -window $t.delete
- $t insert end " the plot again.nn"
- $t insert end "You may also find it useful to put embedded windows in "
- $t insert end "a text without any actual text. In this case the "
- $t insert end "text widget acts like a geometry manager. For "
- $t insert end "example, here is a collection of buttons laid out "
- $t insert end "neatly into rows by the text widget. These buttons "
- $t insert end "can be used to change the background color of the "
- $t insert end "text widget ("Default" restores the color to "
- $t insert end "its default). If you click on the button labeled "
- $t insert end ""Short", it changes to a longer string so that "
- $t insert end "you can see how the text widget automatically "
- $t insert end "changes the layout. Click on the button again "
- $t insert end "to restore the short string.n"
- button $t.default -text Default -command "embDefBg $t"
- -cursor top_left_arrow
- $t window create end -window $t.default -padx 3
- global embToggle
- set embToggle Short
- checkbutton $t.toggle -textvariable embToggle -indicatoron 0
- -variable embToggle -onvalue "A much longer string"
- -offvalue "Short" -cursor top_left_arrow -pady 5 -padx 2
- $t window create end -window $t.toggle -padx 3 -pady 2
- set i 1
- foreach color {AntiqueWhite3 Bisque1 Bisque2 Bisque3 Bisque4
- SlateBlue3 RoyalBlue1 SteelBlue2 DeepSkyBlue3 LightBlue1
- DarkSlateGray1 Aquamarine2 DarkSeaGreen2 SeaGreen1
- Yellow1 IndianRed1 IndianRed2 Tan1 Tan4} {
- button $t.color$i -text $color -cursor top_left_arrow -command
- "$t configure -bg $color"
- $t window create end -window $t.color$i -padx 3 -pady 2
- incr i
- }
- $t tag add buttons $t.default end
- proc textWindOn w {
- catch {destroy $w.scroll2}
- set t $w.f.text
- scrollbar $w.scroll2 -orient horizontal -command "$t xview"
- pack $w.scroll2 -after $w.buttons -side bottom -fill x
- $t configure -xscrollcommand "$w.scroll2 set" -wrap none
- }
- proc textWindOff w {
- catch {destroy $w.scroll2}
- set t $w.f.text
- $t configure -xscrollcommand {} -wrap word
- }
- proc textWindPlot t {
- set c $t.c
- if {[winfo exists $c]} {
- return
- }
- canvas $c -relief sunken -width 450 -height 300 -cursor top_left_arrow
- set font {Helvetica 18}
- $c create line 100 250 400 250 -width 2
- $c create line 100 250 100 50 -width 2
- $c create text 225 20 -text "A Simple Plot" -font $font -fill brown
- for {set i 0} {$i <= 10} {incr i} {
- set x [expr {100 + ($i*30)}]
- $c create line $x 250 $x 245 -width 2
- $c create text $x 254 -text [expr {10*$i}] -anchor n -font $font
- }
- for {set i 0} {$i <= 5} {incr i} {
- set y [expr {250 - ($i*40)}]
- $c create line 100 $y 105 $y -width 2
- $c create text 96 $y -text [expr {$i*50}].0 -anchor e -font $font
- }
- foreach point {
- {12 56} {20 94} {33 98} {32 120} {61 180} {75 160} {98 223}
- } {
- set x [expr {100 + (3*[lindex $point 0])}]
- set y [expr {250 - (4*[lindex $point 1])/5}]
- set item [$c create oval [expr {$x-6}] [expr {$y-6}]
- [expr {$x+6}] [expr {$y+6}] -width 1 -outline black
- -fill SkyBlue2]
- $c addtag point withtag $item
- }
- $c bind point <Any-Enter> "$c itemconfig current -fill red"
- $c bind point <Any-Leave> "$c itemconfig current -fill SkyBlue2"
- $c bind point <1> "embPlotDown $c %x %y"
- $c bind point <ButtonRelease-1> "$c dtag selected"
- bind $c <B1-Motion> "embPlotMove $c %x %y"
- while {[string first [$t get plot] " tn"] >= 0} {
- $t delete plot
- }
- $t insert plot "n"
- $t window create plot -window $c
- $t tag add center plot
- $t insert plot "n"
- }
- set embPlot(lastX) 0
- set embPlot(lastY) 0
- proc embPlotDown {w x y} {
- global embPlot
- $w dtag selected
- $w addtag selected withtag current
- $w raise current
- set embPlot(lastX) $x
- set embPlot(lastY) $y
- }
- proc embPlotMove {w x y} {
- global embPlot
- $w move selected [expr {$x-$embPlot(lastX)}] [expr {$y-$embPlot(lastY)}]
- set embPlot(lastX) $x
- set embPlot(lastY) $y
- }
- proc textWindDel w {
- set t $w.f.text
- if {[winfo exists $t.c]} {
- $t delete $t.c
- while {[string first [$t get plot] " tn"] >= 0} {
- $t delete plot
- }
- $t insert plot " "
- }
- }
- proc embDefBg t {
- $t configure -background [lindex [$t configure -background] 3]
- }
