/usr/share/tcltk/tklib0.6/plotchart/plotgantt.tcl is in tklib 0.6-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# Facilities to draw Gantt charts in a dedicated canvas
#
# Note:
# This source file contains the private functions for Gantt charts.
# It is the companion of "plotchart.tcl"
# Some functions have been derived from the similar time chart
# functions.
#
# GanttColor --
# Set the color of a component
# Arguments:
# w Name of the canvas
# component Component in question
# color New colour
# Result:
# None
# Side effects:
# Items with a tag equal to that component are changed
#
proc ::Plotchart::GanttColor { w component color } {
variable settings
set settings($w,color,$component) $color
switch -- $component {
"description" -
"summary" {
$w itemconfigure $component -foreground $color
}
"odd" -
"even" {
$w itemconfigure $component -fill $color -outline $color
}
"completed" -
"left" {
$w itemconfigure $component -fill $color
}
}
}
# GanttFont --
# Set the font of a component
# Arguments:
# w Name of the canvas
# component Component in question
# font New font
# Result:
# None
# Side effects:
# Items with a tag equal to that component are changed
#
proc ::Plotchart::GanttFont { w component font } {
variable settings
set settings($w,font,$component) $font
switch -- $component {
"description" -
"summary" {
$w itemconfigure $component -font $font
}
}
}
# DrawGanttPeriod --
# Draw a period
# Arguments:
# w Name of the canvas
# text Text to identify the "period" item
# time_begin Start time
# time_end Stop time
# completed Fraction completed (in %)
# Result:
# List of item numbers, for further manipulation
# Side effects:
# Data bars drawn in canvas
#
proc ::Plotchart::DrawGanttPeriod { w text time_begin time_end completed } {
variable settings
variable data_series
variable scaling
#
# Draw the text first
#
set ytext [expr {$scaling($w,current)-0.5}]
foreach {x y} [coordsToPixel $w $scaling($w,xmin) $ytext] {break}
set items {}
lappend items \
[$w create text 5 $y -text $text -anchor w \
-tag {description vertscroll above} \
-font $settings($w,font,description)]
#
# Draw the bar to indicate the period
#
set xmin [clock scan $time_begin]
set xmax [clock scan $time_end]
set xcmp [expr {$xmin + $completed*($xmax-$xmin)/100.0}]
set ytop [expr {$scaling($w,current)-0.5*(1.0-$scaling($w,dy))}]
set ybott [expr {$scaling($w,current)-0.5*(1.0+$scaling($w,dy))}]
foreach {x1 y1} [coordsToPixel $w $xmin $ytop ] {break}
foreach {x2 y2} [coordsToPixel $w $xmax $ybott] {break}
foreach {x3 y2} [coordsToPixel $w $xcmp $ybott] {break}
lappend items \
[$w create rectangle $x1 $y1 $x3 $y2 -fill $settings($w,color,completed) \
-tag {completed vertscroll horizscroll below}] \
[$w create rectangle $x3 $y1 $x2 $y2 -fill $settings($w,color,left) \
-tag {left vertscroll horizscroll below}] \
[$w create text [expr {$x2+10}] $y -text "$completed%" \
-anchor w \
-tag {description vertscroll horizscroll below} \
-font $settings($w,font,description)]
set scaling($w,current) [expr {$scaling($w,current)-1.0}]
ReorderChartItems $w
return $items
}
# DrawGanttVertLine --
# Draw a vertical line with a label
# Arguments:
# w Name of the canvas
# text Text to identify the line
# time Time for which the line is drawn
# Result:
# None
# Side effects:
# Line drawn in canvas
#
proc ::Plotchart::DrawGanttVertLine { w text time {colour black}} {
variable settings
variable data_series
variable scaling
#
# Draw the text first
#
set xtime [clock scan $time]
set ytext [expr {$scaling($w,ymax)-0.5*$scaling($w,dy)}]
foreach {x y} [coordsToPixel $w $xtime $ytext] {break}
$w create text $x $y -text $text -anchor w -font $settings($w,font,scale) \
-tag {horizscroll timeline}
#
# Draw the line
#
foreach {x1 y1} [coordsToPixel $w $xtime $scaling($w,ymin)] {break}
foreach {x2 y2} [coordsToPixel $w $xtime $scaling($w,ymax)] {break}
$w create line $x1 $y1 $x2 $y2 -fill black -tag {horizscroll timeline tline}
$w raise topmask
}
# DrawGanttMilestone --
# Draw a "milestone"
# Arguments:
# w Name of the canvas
# text Text to identify the line
# time Time for which the milestone is drawn
# colour Optionally the colour
# Result:
# None
# Side effects:
# Triangle drawn in canvas
#
proc ::Plotchart::DrawGanttMilestone { w text time {colour black}} {
variable settings
variable data_series
variable scaling
#
# Draw the text first
#
set ytext [expr {$scaling($w,current)-0.5}]
foreach {x y} [coordsToPixel $w $scaling($w,xmin) $ytext] {break}
set items {}
lappend items \
[$w create text 5 $y -text $text -anchor w -tag {description vertscroll above} \
-font $settings($w,font,description)]
# Colour text?
#
# Draw an upside-down triangle to indicate the time
#
set xcentre [clock scan $time]
set ytop [expr {$scaling($w,current)-0.2}]
set ybott [expr {$scaling($w,current)-0.8}]
foreach {x1 y1} [coordsToPixel $w $xcentre $ybott] {break}
foreach {x2 y2} [coordsToPixel $w $xcentre $ytop] {break}
set x2 [expr {$x1-0.4*($y1-$y2)}]
set x3 [expr {$x1+0.4*($y1-$y2)}]
set y3 $y2
lappend items \
[$w create polygon $x1 $y1 $x2 $y2 $x3 $y3 -fill $colour \
-tag {vertscroll horizscroll below}]
set scaling($w,current) [expr {$scaling($w,current)-1.0}]
ReorderChartItems $w
return $items
}
# DrawGanttConnect --
# Draw a connection between two entries
# Arguments:
# w Name of the canvas
# from The from item
# to The to item
# Result:
# List of item numbers, for further manipulation
# Side effects:
# Arrow drawn in canvas
#
proc ::Plotchart::DrawGanttConnect { w from to } {
variable settings
variable data_series
variable scaling
foreach {xf1 yf1 xf2 yf2} [$w coords [lindex $from 2]] {break}
foreach {xt1 yt1 xt2 yt2} [$w coords [lindex $to 1]] {break}
set yfc [expr {($yf1+$yf2)/2.0}]
set ytc [expr {($yt1+$yt2)/2.0}]
if { $xf2 > $xf1-15 } {
set coords [list $xf2 $yfc \
[expr {$xf2+5}] $yfc \
[expr {$xf2+5}] [expr {$yf2+5}] \
[expr {$xt1-10}] [expr {$yf2+5}] \
[expr {$xt1-10}] $ytc \
$xt1 $ytc ]
} else {
set coords [list $xf2 $yfc \
[expr {$xf2+5}] $yfc \
[expr {$xt2+5}] $ytc \
$xt1 $ytc ]
}
ReorderChartItems $w
return [$w create line $coords -arrow last -tag {vertscroll horizscroll below}]
}
# DrawGanttSummary --
# Draw a summary entry
# Arguments:
# w Name of the canvas
# text Text to describe the summary
# args List of items belonging to the summary
# Result:
# List of canvas items making up the summary
# Side effects:
# Items are shifted down to make room for the summary
#
proc ::Plotchart::DrawGanttSummary { w text args } {
variable settings
variable data_series
variable scaling
#
# Determine the coordinates of the summary bar
#
set xmin {}
set xmax {}
set ymin {}
set ymax {}
foreach entry $args {
foreach {x1 y1} [$w coords [lindex $entry 1]] {break}
foreach {dummy dummy x2 y2} [$w coords [lindex $entry 2]] {break}
if { $xmin == {} || $xmin > $x1 } { set xmin $x1 }
if { $xmax == {} || $xmax < $x2 } { set xmax $x2 }
if { $ymin == {} || $ymin > $y1 } {
set ymin $y1
set yminb $y2
}
}
#
# Compute the vertical shift
#
set yfirst $scaling($w,ymin)
set ynext [expr {$yfirst-1.0}]
foreach {x y1} [coordsToPixel $w $scaling($w,xmin) $yfirst] {break}
foreach {x y2} [coordsToPixel $w $scaling($w,xmin) $ynext ] {break}
set dy [expr {$y2-$y1}]
#
# Shift the items
#
foreach entry $args {
foreach item $entry {
$w move $item 0 $dy
}
}
#
# Draw the summary text first
#
set ytext [expr {($ymin+$yminb)/2.0}]
set ymin [expr {$ymin+0.3*$dy}]
set items {}
lappend items \
[$w create text 5 $ytext -text $text -anchor w -tag {summary vertscroll above} \
-font $settings($w,font,summary)]
# Colour text?
#
# Draw the bar
#
set coords [list [expr {$xmin-5}] [expr {$ymin-5}] \
[expr {$xmax+5}] [expr {$ymin-5}] \
[expr {$xmax+5}] [expr {$ymin+5}] \
$xmax [expr {$ymin+10}] \
[expr {$xmax-5}] [expr {$ymin+5}] \
[expr {$xmin+5}] [expr {$ymin+5}] \
$xmin [expr {$ymin+10}] \
[expr {$xmin-5}] [expr {$ymin+5}] ]
lappend items \
[$w create polygon $coords -tag {summarybar vertscroll horizscroll below} \
-fill $settings($w,color,summarybar)]
set scaling($w,current) [expr {$scaling($w,current)-1.0}]
ReorderChartItems $w
return $items
}
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