168 lines
4.5 KiB
Plaintext
168 lines
4.5 KiB
Plaintext
# This file is a Tcl script to test out the procedures in the file
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# tkColor.c. It is organized in the standard fashion for Tcl tests.
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#
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# Copyright (c) 1995 Sun Microsystems, Inc.
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#
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# See the file "license.terms" for information on usage and redistribution
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# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
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#
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# SCCS: @(#) color.test 1.5 96/02/16 10:56:05
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if {[info procs test] != "test"} {
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source defs
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}
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eval destroy [winfo children .]
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wm geometry . {}
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raise .
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# cname --
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# Returns a proper name for a color, given its intensities.
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#
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# Arguments:
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# r, g, b - Intensities on a 0-255 scale.
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proc cname {r g b} {
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format #%02x%02x%02x $r $g $b
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}
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proc cname4 {r g b} {
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format #%04x%04x%04x $r $g $b
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}
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# mkColors --
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# Creates a canvas and fills it with a 2-D array of squares, each of a
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# different color.
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#
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# Arguments:
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# c - Name of canvas window to create.
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# width - Number of squares in each row.
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# height - Number of squares in each column.
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# r, g, b - Initial value for red, green, and blue intensities.
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# rx, gx, bx - Change in intensities between adjacent elements in row.
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# ry, gy, by - Change in intensities between adjacent elements in column.
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proc mkColors {c width height r g b rx gx bx ry gy by} {
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catch {destroy $c}
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canvas $c -width 400 -height 200 -bd 0
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for {set y 0} {$y < $height} {incr y} {
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for {set x 0} {$x < $width} {incr x} {
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set color [format #%02x%02x%02x [expr $r + $y*$ry + $x*$rx] \
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[expr $g + $y*$gy + $x*$gx] [expr $b + $y*$by + $x*$bx]]
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$c create rectangle [expr 10*$x] [expr 20*$y] \
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[expr 10*$x + 10] [expr 20*$y + 20] -outline {} \
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-fill $color
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}
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}
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}
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# closest -
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# Given intensities between 0 and 255, return the closest intensities
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# that the server can provide.
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#
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# Arguments:
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# w - Window in which to lookup color
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# r, g, b - Desired intensities, between 0 and 255.
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proc closest {w r g b} {
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set vals [winfo rgb $w [cname $r $g $b]]
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list [expr [lindex $vals 0]/256] [expr [lindex $vals 1]/256] \
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[expr [lindex $vals 2]/256]
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}
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# c255 -
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# Given a list of red, green, and blue intensities, scale them
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# down to a 0-255 range.
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#
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# Arguments:
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# vals - List of intensities.
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proc c255 {vals} {
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list [expr [lindex $vals 0]/256] [expr [lindex $vals 1]/256] \
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[expr [lindex $vals 2]/256]
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}
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# colorsFree --
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#
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# Returns 1 if there appear to be free colormap entries in a window,
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# 0 otherwise.
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#
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# Arguments:
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# w - Name of window in which to check.
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# red, green, blue - Intensities to use in a trial color allocation
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# to see if there are colormap entries free.
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proc colorsFree {w {red 31} {green 245} {blue 192}} {
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set vals [winfo rgb $w [format #%02x%02x%02x $red $green $blue]]
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expr ([lindex $vals 0]/256 == $red) && ([lindex $vals 1]/256 == $green) \
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&& ([lindex $vals 2]/256 == $blue)
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}
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# Create a top-level with its own colormap (so we can test under
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# controlled conditions), then check to make sure that the visual
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# is color-mapped with 256 colors. If not, just skip this whole
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# test file.
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if [catch {toplevel .t -visual {pseudocolor 8} -colormap new}] {
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return
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}
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wm geom .t +0+0
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if {[winfo depth .t] != 8} {
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destroy .t
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return
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}
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mkColors .t.c 40 6 0 0 0 0 6 0 0 0 40
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pack .t.c
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update
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if ![colorsFree .t.c 101 233 17] {
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destroy .t
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return
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}
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mkColors .t.c2 20 1 250 0 0 -10 0 0 0 0 0
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pack .t.c2
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if [colorsFree .t.c] {
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destroy .t
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return
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}
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destroy .t.c .t.c2
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test color-1.1 {Tk_GetColor procedure} {
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c255 [winfo rgb .t red]
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} {255 0 0}
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test color-1.2 {Tk_GetColor procedure} {
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list [catch {winfo rgb .t noname} msg] $msg
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} {1 {unknown color name "noname"}}
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test color-1.3 {Tk_GetColor procedure} {
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c255 [winfo rgb .t #123456]
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} {18 52 86}
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test color-1.4 {Tk_GetColor procedure} {
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list [catch {winfo rgb .t #xyz} msg] $msg
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} {1 {invalid color name "#xyz"}}
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test color-2.1 {Tk_FreeColor procedure, reference counting} {
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eval destroy [winfo child .t]
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mkColors .t.c 40 6 0 240 240 0 -6 0 0 0 -40
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pack .t.c
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mkColors .t.c2 20 1 250 0 0 -10 0 0 0 0 0
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pack .t.c2
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update
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set last [.t.c2 create rectangle 50 50 70 60 -outline {} \
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-fill [cname 0 240 240]]
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.t.c delete 1
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set result [colorsFree .t]
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.t.c2 delete $last
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lappend result [colorsFree .t]
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} {0 1}
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test color-2.2 {Tk_FreeColor procedure, flushing stressed cmap information} {
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eval destroy [winfo child .t]
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mkColors .t.c 40 6 0 240 240 0 -6 0 0 0 -40
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pack .t.c
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mkColors .t.c2 20 1 250 0 0 -10 0 0 0 0 0
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mkColors .t.c2 20 1 250 250 0 -10 -10 0 0 0 0
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pack .t.c2
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update
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closest .t 241 241 1
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} {240 240 0}
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destroy .t
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