+proc linemenu {x y id} {
+ global linectxmenu linemenuid
+ set linemenuid $id
+ $linectxmenu post $x $y
+}
+
+proc lineselect {} {
+ global linemenuid idline
+ if {[info exists linemenuid] && [info exists idline($linemenuid)]} {
+ selectline $idline($linemenuid)
+ }
+}
+
+proc lineenter {x y id} {
+ global hoverx hovery hoverid hovertimer
+ global commitinfo canv
+
+ if {![info exists commitinfo($id)]} return
+ set hoverx $x
+ set hovery $y
+ set hoverid $id
+ if {[info exists hovertimer]} {
+ after cancel $hovertimer
+ }
+ set hovertimer [after 500 linehover]
+ $canv delete hover
+}
+
+proc linemotion {x y id} {
+ global hoverx hovery hoverid hovertimer
+
+ if {[info exists hoverid] && $id == $hoverid} {
+ set hoverx $x
+ set hovery $y
+ if {[info exists hovertimer]} {
+ after cancel $hovertimer
+ }
+ set hovertimer [after 500 linehover]
+ }
+}
+
+proc lineleave {id} {
+ global hoverid hovertimer canv
+
+ if {[info exists hoverid] && $id == $hoverid} {
+ $canv delete hover
+ if {[info exists hovertimer]} {
+ after cancel $hovertimer
+ unset hovertimer
+ }
+ unset hoverid
+ }
+}
+
+proc linehover {} {
+ global hoverx hovery hoverid hovertimer
+ global canv linespc lthickness
+ global commitinfo mainfont
+
+ set text [lindex $commitinfo($hoverid) 0]
+ set ymax [lindex [$canv cget -scrollregion] 3]
+ if {$ymax == {}} return
+ set yfrac [lindex [$canv yview] 0]
+ set x [expr {$hoverx + 2 * $linespc}]
+ set y [expr {$hovery + $yfrac * $ymax - $linespc / 2}]
+ set x0 [expr {$x - 2 * $lthickness}]
+ set y0 [expr {$y - 2 * $lthickness}]
+ set x1 [expr {$x + [font measure $mainfont $text] + 2 * $lthickness}]
+ set y1 [expr {$y + $linespc + 2 * $lthickness}]
+ set t [$canv create rectangle $x0 $y0 $x1 $y1 \
+ -fill \#ffff80 -outline black -width 1 -tags hover]
+ $canv raise $t
+ set t [$canv create text $x $y -anchor nw -text $text -tags hover]
+ $canv raise $t
+}
+