}]]
}
-
-set scale 16
+proc init-scales {} {
+ global scales scaleix scale
+ set defscale 16
+ set scales {1 2 3 4 5 6 8}
+ set e12 {10 12 15 18 22 27 33 39 47 56 68 82}
+ foreach t $e12 {
+ if {$t < $defscale} { set scaleix [llength $scales] }
+ lappend scales $t
+ }
+ foreach t [lrange $e12 0 6] { lappend scales [expr {$t * 10}] }
+ set scale [lindex $scales $scaleix]
+}
proc coord {c} {
global scale
frame .cp.ctrl.zoom
pack .cp.ctrl.zoom -side top
- button .cp.ctrl.zoom.out -text - -font {Courier 16} -command {zoom /2} -pady 0
- button .cp.ctrl.zoom.in -text + -font {Courier 16} -command {zoom *2} -pady 0
- pack .cp.ctrl.zoom.out .cp.ctrl.zoom.in -side left
+ foreach inout {out in} minplus {- +} {
+ button .cp.ctrl.zoom.$inout -text $minplus -font {Courier 16} \
+ -command "zoom ${minplus}1" -pady 0
+ pack .cp.ctrl.zoom.$inout -side left
+ }
parser-control-create .cp.ctrl.acquire \
acquire Acquire \
}
}
-proc zoom {extail} {
- global scale canvas
- set nscale [expr "\$scale $extail"]
- debug "ZOOM $scale $nscale"
- if {$nscale < 1 || $nscale > 200} return
- set scale $nscale
+proc zoom {amt} {
+ global scaleix scales scale canvas
+ incr scaleix $amt
+ if {$scaleix < 0} { set scaleix 0 }
+ set nscales [llength $scales]
+ if {$scaleix >= $nscales} { set scaleix [expr {$nscales-1}] }
+ set scale [lindex $scales $scaleix]
+ debug "ZOOM $amt $scaleix $scale"
draw
}
#---------- main program ----------
+init-scales
parseargs
argdefaults
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