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- # This file is a Tcl script to test out the procedures in the file
- # tkColor.c. It is organized in the standard fashion for Tcl tests.
- #
- # Copyright (c) 1995 Sun Microsystems, Inc.
- #
- # See the file "license.terms" for information on usage and redistribution
- # of this file, and for a DISCLAIMER OF ALL WARRANTIES.
- #
- # @(#) color.test 1.4 95/03/18 15:51:07
-
- if {[info procs test] != "test"} {
- source defs
- }
-
- eval destroy [winfo children .]
- wm geometry . {}
- raise .
-
- # cname --
- # Returns a proper name for a color, given its intensities.
- #
- # Arguments:
- # r, g, b - Intensities on a 0-255 scale.
-
- proc cname {r g b} {
- format #%02x%02x%02x $r $g $b
- }
- proc cname4 {r g b} {
- format #%04x%04x%04x $r $g $b
- }
-
- # mkColors --
- # Creates a canvas and fills it with a 2-D array of squares, each of a
- # different color.
- #
- # Arguments:
- # c - Name of canvas window to create.
- # width - Number of squares in each row.
- # height - Number of squares in each column.
- # r, g, b - Initial value for red, green, and blue intensities.
- # rx, gx, bx - Change in intensities between adjacent elements in row.
- # ry, gy, by - Change in intensities between adjacent elements in column.
-
- proc mkColors {c width height r g b rx gx bx ry gy by} {
- catch {destroy $c}
- canvas $c -width 400 -height 200 -bd 0
- for {set y 0} {$y < $height} {incr y} {
- for {set x 0} {$x < $width} {incr x} {
- set color [format #%02x%02x%02x [expr $r + $y*$ry + $x*$rx] \
- [expr $g + $y*$gy + $x*$gx] [expr $b + $y*$by + $x*$bx]]
- $c create rectangle [expr 10*$x] [expr 20*$y] \
- [expr 10*$x + 10] [expr 20*$y + 20] -outline {} \
- -fill $color
- }
- }
- }
-
- # closest -
- # Given intensities between 0 and 255, return the closest intensities
- # that the server can provide.
- #
- # Arguments:
- # w - Window in which to lookup color
- # r, g, b - Desired intensities, between 0 and 255.
-
- proc closest {w r g b} {
- set vals [winfo rgb $w [cname $r $g $b]]
- list [expr [lindex $vals 0]/256] [expr [lindex $vals 1]/256] \
- [expr [lindex $vals 2]/256]
- }
-
- # c255 -
- # Given a list of red, green, and blue intensities, scale them
- # down to a 0-255 range.
- #
- # Arguments:
- # vals - List of intensities.
-
- proc c255 {vals} {
- list [expr [lindex $vals 0]/256] [expr [lindex $vals 1]/256] \
- [expr [lindex $vals 2]/256]
- }
-
- # colorsFree --
- #
- # Returns 1 if there appear to be free colormap entries in a window,
- # 0 otherwise.
- #
- # Arguments:
- # w - Name of window in which to check.
- # red, green, blue - Intensities to use in a trial color allocation
- # to see if there are colormap entries free.
-
- proc colorsFree {w {red 31} {green 245} {blue 192}} {
- set vals [winfo rgb $w [format #%02x%02x%02x $red $green $blue]]
- expr ([lindex $vals 0]/256 == $red) && ([lindex $vals 1]/256 == $green) \
- && ([lindex $vals 2]/256 == $blue)
- }
-
- # Create a top-level with its own colormap (so we can test under
- # controlled conditions), then check to make sure that the visual
- # is color-mapped with 256 colors. If not, just skip this whole
- # test file.
-
- if [catch {toplevel .t -visual {pseudocolor 8} -colormap new}] {
- return
- }
- wm geom .t +0+0
- if {[winfo depth .t] != 8} {
- destroy .t
- return
- }
- mkColors .t.c 40 6 0 0 0 0 6 0 0 0 40
- pack .t.c
- update
- if ![colorsFree .t.c 101 233 17] {
- destroy .t
- return
- }
- mkColors .t.c2 20 1 250 0 0 -10 0 0 0 0 0
- pack .t.c2
- if [colorsFree .t.c] {
- destroy .t
- return
- }
- destroy .t.c .t.c2
-
- test color-1.1 {Tk_GetColor procedure} {
- c255 [winfo rgb .t red]
- } {255 0 0}
- test color-1.2 {Tk_GetColor procedure} {
- list [catch {winfo rgb .t noname} msg] $msg
- } {1 {unknown color name "noname"}}
-
- test color-1.3 {Tk_GetColor procedure} {
- c255 [winfo rgb .t #123456]
- } {18 52 86}
- test color-1.4 {Tk_GetColor procedure} {
- list [catch {winfo rgb .t #xyz} msg] $msg
- } {1 {invalid color name "#xyz"}}
-
- test color-2.1 {Tk_FreeColor procedure, reference counting} {
- eval destroy [winfo child .t]
- mkColors .t.c 40 6 0 240 240 0 -6 0 0 0 -40
- pack .t.c
- mkColors .t.c2 20 1 250 0 0 -10 0 0 0 0 0
- pack .t.c2
- update
- set last [.t.c2 create rectangle 50 50 70 60 -outline {} \
- -fill [cname 0 240 240]]
- .t.c delete 1
- set result [colorsFree .t]
- .t.c2 delete $last
- lappend result [colorsFree .t]
- } {0 1}
- test color-2.2 {Tk_FreeColor procedure, flushing stressed cmap information} {
- eval destroy [winfo child .t]
- mkColors .t.c 40 6 0 240 240 0 -6 0 0 0 -40
- pack .t.c
- mkColors .t.c2 20 1 250 0 0 -10 0 0 0 0 0
- mkColors .t.c2 20 1 250 250 0 -10 -10 0 0 0 0
- pack .t.c2
- update
- closest .t 241 241 1
- } {240 240 0}
-
- destroy .t
-