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|
############################################################################
#
# File: offtiler.icn
#
# Subject: Program to tile images with offset
#
# Author: Ralph E. Griswold
#
# Date: March 14, 1998
#
############################################################################
#
# This file is in the public domain.
#
############################################################################
#
# This program produces drop repeats and brick patterns.
#
############################################################################
#
# Requires: Version 9 graphics
#
############################################################################
#
# Links: io, vsetup
#
############################################################################
link io
link vsetup
global direction
global factor
global height
global subject
global target
global vidgets
global width
procedure main()
vidgets := ui()
direction := "vertical"
factor := 1
GetEvents(vidgets["root"], , shortcuts)
end
procedure file_cb(vidget, value)
case value[1] of {
"open @O" : open_image()
"save @S" : save_tile()
"quit @Q" : exit()
}
return
end
procedure parameter_cb(vidget, value)
case value[1] of {
"direction @D" : set_direction()
"factor @F" : set_factor()
}
return
end
procedure tile_cb()
local incr, i, j, offset
if /subject then {
Notice("No subject image.")
fail
}
WClose(\target)
target := WOpen("label=offset tile", "size=" || (width * factor) || "," ||
(height * factor)) | {
Notice("Cannot open target window.")
fail
}
Raise()
case direction of {
"vertical" : {
incr := height / factor
every i := -1 to factor do { # columns
offset := i * incr
every j := -1 to factor do { # rows
CopyArea(subject, target, 0, 0, width, height, i * width,
j * height + offset)
}
}
}
"horizontal" : {
incr := width / factor
every i := -1 to factor do { # rows
offset := i * incr
every j := -1 to factor do { # columns
CopyArea(subject, target, 0, 0, width, height,
j * width + offset, i * height)
}
}
}
}
return
end
procedure set_direction()
repeat {
if SelectDialog("Direction", ["vertical", "horizontal"], direction) ==
"Cancel" then fail
direction := dialog_value
check_parameters() | next
return
}
end
procedure set_factor()
repeat {
if TextDialog("Offset factor", , factor) == "Cancel" then fail
factor := (0 < integer(dialog_value[1])) | {
Notice("Invalid factor specification.")
next
}
check_parameters() | next
return
}
end
procedure check_parameters()
case direction of {
"vertical" : {
if (height % factor) ~= 0 then {
Notice("Factor does not evenly divide height.")
fail
}
if factor >= height then {
Notice("Factor too large.")
fail
}
}
"horizontal" : {
if (width % factor) ~= 0 then {
Notice("Factor does not evenly divide width.")
fail
}
if factor >= width then {
Notice("Factor too large.")
fail
}
}
}
return
end
procedure shortcuts(e)
if &meta then case map(e) of {
"d" : set_direction()
"f" : set_factor()
"o" : open_image()
"q" : exit()
"s" : save_tile()
"t" : tile_cb()
}
return
end
procedure open_image()
repeat {
if OpenDialog("Open image:") == "Cancel" then fail
WClose(\subject)
subject := WOpen("label=" || dialog_value, "image=" || dialog_value) | {
Notice("Cannot open image.")
next
}
width := WAttrib(subject, "width")
height := WAttrib(subject, "height")
factor := 1
Raise()
return
}
end
procedure save_tile()
local file
repeat {
if SaveDialog("Save tile:") ~== "Yes" then fail
file := dialog_value
if exists(file) then {
if TextDialog("Overwrite existing file?") == "Cancel" then next
}
WriteImage(target, file) | {
Notice("Cannot write image.")
next
}
return
}
end
#===<<vib:begin>>=== modify using vib; do not remove this marker line
procedure ui_atts()
return ["size=200,165", "bg=pale gray"]
end
procedure ui(win, cbk)
return vsetup(win, cbk,
[":Sizer:::0,0,200,165:",],
["file:Menu:pull::0,0,36,21:File",file_cb,
["open @O","save @S","quit @Q"]],
["line1:Line:::0,23,200,23:",],
["parameters:Menu:pull::37,0,78,21:Parameters",parameter_cb,
["direction @D","factor @F"]],
["tile:Button:regular::12,36,35,20:tile",tile_cb],
)
end
#===<<vib:end>>=== end of section maintained by vib
|
