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# vim: set sw=4 ai cin et:
# NOTE: this must be sychronized with VGA adaptor module
if { [namespace exists ::de1vga] } { namespace delete ::de1vga }
namespace eval ::de1vga {
namespace eval var {
set zoom 4
set width 160
set height 120
set bg "#808080"
set count 0
}
proc init {} {
if ({[winfo exists .de1vga]}) { destroy .de1vga }
toplevel .de1vga -padx 5 -pady 5
wm title .de1vga "fake VGA screen"
frame .de1vga.draw
pack .de1vga.draw -expand 1 -fill both
frame .de1vga.status
button .de1vga.status.reset -width 5 -relief ridge -text "CLEAR" -command [namespace code reset]
label .de1vga.status.count_legend -text " count:"
label .de1vga.status.count_val -relief groove -width 10
label .de1vga.status.drawn_legend -text "last:"
label .de1vga.status.drawn_pos -relief groove -width 7
label .de1vga.status.click_legend -text " clicked:"
label .de1vga.status.click_pos -relief groove -width 7
label .de1vga.status.mouse_legend -text " mouse:"
label .de1vga.status.mouse_pos -relief groove -width 7
pack .de1vga.status.reset .de1vga.status.count_legend .de1vga.status.count_val -side left
pack .de1vga.status.mouse_pos .de1vga.status.mouse_legend .de1vga.status.click_pos .de1vga.status.click_legend \
.de1vga.status.drawn_pos .de1vga.status.drawn_legend -side right
pack .de1vga.status -side bottom -fill x
.de1vga.status.drawn_pos configure -text "-,-"
.de1vga.status.mouse_pos configure -text "-,-"
.de1vga.status.click_pos configure -text "-,-"
set w [expr $var::width * $var::zoom]
set h [expr {$var::height * $var::zoom}]
canvas .de1vga.draw.c -width $w -height $h -bg $var::bg
pack .de1vga.draw.c -expand 1 -fill both
bind .de1vga.draw.c <Motion> [namespace code { show_mouse %x %y }]
bind .de1vga.draw.c <ButtonPress> [namespace code { show_click %x %y }]
bind .de1vga.draw.c <Leave> [namespace code { .de1vga.status.mouse_pos configure -text "-,-" }]
}
proc reset {} {
.de1vga.draw.c create rectangle 0 0 [expr $var::width * $var::zoom - 1] [expr $var::height * $var::zoom - 1] -outline $var::bg -fill $var::bg
set var::count 0
.de1vga.status.count_val configure -text "$var::count"
.de1vga.status.drawn_pos configure -text "-,-"
}
proc rgb_to_hex {c} {
set b [expr ($c & 1) * 255]
set g [expr (($c >> 1) & 1) * 255]
set r [expr (($c >> 2) & 1) * 255]
return [format "#%02x%02x%02x" $r $g $b]
}
proc plot {x y c} {
if !({[winfo exists .de1vga]}) {init}
set x [string tolower $x]
set y [string tolower $y]
set c [string tolower $c]
if { [string equal $x "x"] || [string equal $x "z" ]} { return }
if { [string equal $y "x"] || [string equal $y "z" ]} { return }
if { [string equal $c "x"] || [string equal $c "z" ]} { return }
if {[expr $x < 0]} { return }
if {[expr $x >= $var::width]} { return }
if {[expr $y < 0]} { return }
if {[expr $y >= $var::height]} { return }
if !({[winfo exists .de1vga]}) { init }
set x0 [expr $x * $var::zoom]
set y0 [expr $y * $var::zoom]
set x1 [expr ($x+1) * $var::zoom - 1]
set y1 [expr ($y+1) * $var::zoom - 1]
set clr [rgb_to_hex $c]
.de1vga.draw.c create rectangle $x0 $y0 $x1 $y1 -outline $clr -fill $clr
incr var::count
.de1vga.status.count_val configure -text "$var::count"
.de1vga.status.drawn_pos configure -text "$x,$y:$c"
}
proc show_mouse {x0 y0} {
set x [expr $x0 / $var::zoom]
set y [expr $y0 / $var::zoom]
.de1vga.status.mouse_pos configure -text "$x,$y"
}
proc show_click {x0 y0} {
set x [expr $x0 / $var::zoom]
set y [expr $y0 / $var::zoom]
.de1vga.status.click_pos configure -text "$x,$y"
}
}
namespace inscope ::de1vga init
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