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Diffstat (limited to 'tk8.6/library/demos/plot.tcl')
-rw-r--r-- | tk8.6/library/demos/plot.tcl | 97 |
1 files changed, 0 insertions, 97 deletions
diff --git a/tk8.6/library/demos/plot.tcl b/tk8.6/library/demos/plot.tcl deleted file mode 100644 index e7f0361..0000000 --- a/tk8.6/library/demos/plot.tcl +++ /dev/null @@ -1,97 +0,0 @@ -# plot.tcl -- -# -# This demonstration script creates a canvas widget showing a 2-D -# plot with data points that can be dragged with the mouse. - -if {![info exists widgetDemo]} { - error "This script should be run from the \"widget\" demo." -} - -package require Tk - -set w .plot -catch {destroy $w} -toplevel $w -wm title $w "Plot Demonstration" -wm iconname $w "Plot" -positionWindow $w -set c $w.c - -label $w.msg -font $font -wraplength 4i -justify left -text "This window displays a canvas widget containing a simple 2-dimensional plot. You can doctor the data by dragging any of the points with mouse button 1." -pack $w.msg -side top - -## See Code / Dismiss buttons -set btns [addSeeDismiss $w.buttons $w] -pack $btns -side bottom -fill x - -canvas $c -relief raised -width 450 -height 300 -pack $w.c -side top -fill x - -set plotFont {Helvetica 18} - -$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 $plotFont -fill brown - -for {set i 0} {$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 $plotFont -} -for {set i 0} {$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 $plotFont -} - -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> "plotDown $c %x %y" -$c bind point <ButtonRelease-1> "$c dtag selected" -bind $c <B1-Motion> "plotMove $c %x %y" - -set plot(lastX) 0 -set plot(lastY) 0 - -# plotDown -- -# This procedure is invoked when the mouse is pressed over one of the -# data points. It sets up state to allow the point to be dragged. -# -# Arguments: -# w - The canvas window. -# x, y - The coordinates of the mouse press. - -proc plotDown {w x y} { - global plot - $w dtag selected - $w addtag selected withtag current - $w raise current - set plot(lastX) $x - set plot(lastY) $y -} - -# plotMove -- -# This procedure is invoked during mouse motion events. It drags the -# current item. -# -# Arguments: -# w - The canvas window. -# x, y - The coordinates of the mouse. - -proc plotMove {w x y} { - global plot - $w move selected [expr {$x-$plot(lastX)}] [expr {$y-$plot(lastY)}] - set plot(lastX) $x - set plot(lastY) $y -} |