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Diffstat (limited to 'tk8.6/library/demos/twind.tcl')
| -rw-r--r-- | tk8.6/library/demos/twind.tcl | 351 |
1 files changed, 351 insertions, 0 deletions
diff --git a/tk8.6/library/demos/twind.tcl b/tk8.6/library/demos/twind.tcl new file mode 100644 index 0000000..df879e3 --- /dev/null +++ b/tk8.6/library/demos/twind.tcl @@ -0,0 +1,351 @@ +# twind.tcl -- +# +# This demonstration script creates a text widget with a bunch of +# embedded windows. + +if {![info exists widgetDemo]} { + error "This script should be run from the \"widget\" demo." +} + +package require Tk + +# Make an Aqua button's fill color match its parent's background +proc blend {bt} { + if {[tk windowingsystem] eq "aqua"} { + $bt configure -highlightbackground [[winfo parent $bt] cget -background] + } + return $bt +} + +set w .twind +catch {destroy $w} +toplevel $w +wm title $w "Text Demonstration - Embedded Windows and Other Features" +wm iconname $w "Embedded Windows" +positionWindow $w + +## See Code / Dismiss buttons +set btns [addSeeDismiss $w.buttons $w] +pack $btns -side bottom -fill x + +frame $w.f -highlightthickness 1 -borderwidth 1 -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 +ttk::scrollbar $w.scroll -command "$t yview" +pack $w.scroll -side right -fill y +panedwindow $w.pane +pack $w.pane -expand yes -fill both +$w.pane add $w.f +# Import to raise given creation order above +raise $w.f + +$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 $w" \ + -cursor top_left_arrow + +$t insert end "A text widget can contain many different kinds of items, " +$t insert end "both active and passive. It can lay these out in various " +$t insert end "ways, with wrapping, tabs, centering, etc. In addition, " +$t insert end "when the contents are too big for the window, smooth " +$t insert end "scrolling in all directions is provided.\n\n" + +$t insert end "A text widget can contain other widgets embedded " +$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 [blend $t.on] +$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 to\n" +$t window create end -window [blend $t.off] +$t insert end " horizontal scrolling and turn back on word wrapping.\n\n" + +$t insert end "Or, here is another example. If you " +$t window create end -create { + button %W.click -text "Click Here" -command "textWindPlot %W" \ + -cursor top_left_arrow + blend %W.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 -create { + button %W.delete -text "Delete" -command "textWindDel %W" \ + -cursor top_left_arrow + blend %W.delete +} +$t insert end " the plot again.\n\n" + +$t insert end "You can also create multiple text widgets each of which " +$t insert end "display the same underlying text. Click this button to " +$t window create end \ + -create {button %W.peer -text "Make A Peer" -command "textMakePeer %W" \ + -cursor top_left_arrow + blend %W.peer} -padx 3 +$t insert end " widget. Notice how peer widgets can have different " +$t insert end "font settings, and by default contain all the images " +$t insert end "of the 'parent', but that the embedded windows, " +$t insert end "such as buttons may not appear in the peer. To ensure " +$t insert end "that embedded windows appear in all peers you can set the " +$t insert end "'-create' option to a script or a string containing %W. " +$t insert end "(The plot above and the 'Make A Peer' button are " +$t insert end "designed to show up in all peers.) A good use of " +$t insert end "peers is for " +$t window create end \ + -create {button %W.split -text "Split Windows" -command "textSplitWindow %W" \ + -cursor top_left_arrow + blend %W.split} -padx 3 +$t insert end " \n\n" + +$t insert end "Users of previous versions of Tk will also be interested " +$t insert end "to note that now cursor movement is now by visual line by " +$t insert end "default, and that all scrolling of this widget is by pixel.\n\n" + +$t insert end "You may also find it useful to put embedded windows in " +$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" + +$t insert end "\nNOTE: these buttons will not appear in peers!\n" "peer_warning" +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 \ + "changeBg $t $color" + $t window create end -window [blend $t.color$i] -padx 3 -pady 2 + incr i +} +$t tag add buttons [blend $t.default] end + +button $t.bigB -text "Big borders" -command "textWindBigB $t" \ + -cursor top_left_arrow +button $t.smallB -text "Small borders" -command "textWindSmallB $t" \ + -cursor top_left_arrow +button $t.bigH -text "Big highlight" -command "textWindBigH $t" \ + -cursor top_left_arrow +button $t.smallH -text "Small highlight" -command "textWindSmallH $t" \ + -cursor top_left_arrow +button $t.bigP -text "Big pad" -command "textWindBigP $t" \ + -cursor top_left_arrow +button $t.smallP -text "Small pad" -command "textWindSmallP $t" \ + -cursor top_left_arrow + +set text_normal(border) [$t cget -borderwidth] +set text_normal(highlight) [$t cget -highlightthickness] +set text_normal(pad) [$t cget -padx] + +$t insert end "\nYou can also change the usual border width and " +$t insert end "highlightthickness and padding.\n" +$t window create end -window [blend $t.bigB] +$t window create end -window [blend $t.smallB] +$t window create end -window [blend $t.bigH] +$t window create end -window [blend $t.smallH] +$t window create end -window [blend $t.bigP] +$t window create end -window [blend $t.smallP] + +$t insert end "\n\nFinally, images fit comfortably in text widgets too:" + +$t image create end -image \ + [image create photo -file [file join $tk_demoDirectory images ouster.png]] + +proc textWindBigB w { + $w configure -borderwidth 15 +} + +proc textWindBigH w { + $w configure -highlightthickness 15 +} + +proc textWindBigP w { + $w configure -padx 15 -pady 15 +} + +proc textWindSmallB w { + $w configure -borderwidth $::text_normal(border) +} + +proc textWindSmallH w { + $w configure -highlightthickness $::text_normal(highlight) +} + +proc textWindSmallP w { + $w configure -padx $::text_normal(pad) -pady $::text_normal(pad) +} + +proc textWindOn w { + catch {destroy $w.scroll2} + set t $w.f.text + ttk::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 $c]} { + return + } + + while {[string first [$t get plot] " \t\n"] >= 0} { + $t delete plot + } + $t insert plot "\n" + + $t window create plot -create {createPlot %W} + $t tag add center plot + $t insert plot "\n" +} + +proc createPlot {t} { + set c $t.c + + 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" + return $c +} + +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 t { + if {[winfo exists $t.c]} { + $t delete $t.c + while {[string first [$t get plot] " \t\n"] >= 0} { + $t delete plot + } + $t insert plot " " + } +} + +proc changeBg {t c} { + $t configure -background $c + if {[tk windowingsystem] eq "aqua"} { + foreach b [$t window names] { + if {[winfo class $b] eq "Button"} { + $b configure -highlightbackground $c + } + } + } +} + +proc embDefBg t { + set bg [lindex [$t configure -background] 3] + changeBg $t $bg +} + +proc textMakePeer {parent} { + set n 1 + while {[winfo exists .peer$n]} { incr n } + set w [toplevel .peer$n] + wm title $w "Text Peer #$n" + frame $w.f -highlightthickness 1 -borderwidth 1 -relief sunken + set t [$parent peer create $w.f.text -yscrollcommand "$w.scroll set" \ + -borderwidth 0 -highlightthickness 0] + $t tag configure peer_warning -font boldFont + pack $t -expand yes -fill both + ttk::scrollbar $w.scroll -command "$t yview" + pack $w.scroll -side right -fill y + pack $w.f -expand yes -fill both +} + +proc textSplitWindow {textW} { + if {$textW eq ".twind.f.text"} { + if {[winfo exists .twind.peer]} { + destroy .twind.peer + } else { + set parent [winfo parent $textW] + set w [winfo parent $parent] + set t [$textW peer create $w.peer \ + -yscrollcommand "$w.scroll set"] + $t tag configure peer_warning -font boldFont + $w.pane add $t + } + } else { + return + } +} |