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############################################################################
#
# File: fontpick.icn
#
# Subject: Program to show the characters of a font
#
# Author: Gregg M. Townsend
#
# Date: August 23, 1995
#
############################################################################
#
# This file is in the public domain.
#
############################################################################
#
# Usage: fontpick [fontname]
#
# fontpick is an interactive tool for displaying fonts. Initially, the
# specified font, or the VIB default font, is displayed. To display a
# different font, type its name and press return. To exit, enter Meta-Q
# or click the QUIT button.
#
# Caveats:
# -- any character that is too large is clipped to fit its cell
# -- the window cannot be resized to handle large fonts
#
############################################################################
#
# Requires: Version 9 graphics
#
############################################################################
#
# Links: vsetup
#
############################################################################
link vsetup
global vidgets
# main procedure
procedure main(args)
Window ! put(ui_atts(), args)
vidgets := ui()
setfont(, args[1] | Font()) # display named or default font
repeat ProcessEvent(vidgets["root"], other)
end
# setfont(vidget, value) -- display the font named "value"
procedure setfont(vidget, value)
local ttl, sub, rgn, fontname, x, y, w, h, win
# ignore return if no name has been entered
if *value = 0 then
return
# get vidget handles
ttl := vidgets["title"]
sub := vidgets["subtitle"]
rgn := vidgets["region"]
# display font name in title region
EraseArea(ttl.ux, ttl.uy, ttl.uw, ttl.uh)
EraseArea(sub.ux, sub.uy, sub.uw, sub.uh)
CenterString(ttl.ux + ttl.uw / 2, ttl.uy + ttl.uh / 2, value)
# open and display the font
EraseArea(rgn.ux, rgn.uy, rgn.uw, rgn.uh)
if win := Clone("font=" || value) then {
dumpfont(win, rgn.ux, rgn.uy, rgn.uw, rgn.uh)
fontname := Font(win)
if fontname ~== value then
CenterString(sub.ux + sub.uw / 2, sub.uy + sub.uh / 2, fontname)
}
else {
CenterString(sub.ux + sub.uw / 2, sub.uy + sub.uh / 2,
"(cannot find font)")
}
# clear the text entry field to accept the next name
VSetState(vidgets["fontname"], "")
return
end
# dumpfont(win, x, y, w, h) -- display the characters of a font
procedure dumpfont(win, x, y, w, h)
local dx, dy, x1, x2, y1, y2, i, j
# calculate size of cells
dx := (w - 1.001) / 16.0
dy := (h - 1.001) / 16.0
# draw light gray lines to delimit character cells
Fg("light gray")
every x1 := x + integer(dx * (1 to 15)) do
DrawLine(x1, y, x1, y + h - 1)
every y1 := y + integer(dy * (1 to 15)) do
DrawLine(x, y1, x + w - 1, y1)
Fg("black")
# display characters, one per cell
every i := 0 to 15 do {
y1 := integer(y + i * dy)
y2 := integer(y + (i + 1) * dy)
every j := 0 to 15 do {
x1 := integer(x + j * dx)
x2 := integer(x + (j + 1) * dx)
Clip(win, x1 + 1, y1 + 1, x2 - x1 - 1, y2 - y1 - 1)
CenterString(win, (x1 + x2) / 2, (y1 + y2) / 2, char(16 * i + j))
}
}
return
end
# revent(v, e, x, y) -- pass region event to font name vidget
procedure revent(v, e, x, y)
return VEvent(vidgets["fontname"], e, x, y)
end
# other(e) -- pass event outside of regions to font name vidget
#
# Also handles meta-Q event rejected by other vidgets.
procedure other(e)
if &meta & map(e) == "q" then
exit()
return VEvent(vidgets["fontname"], e, &x, &y)
end
# quit() -- process QUIT button
procedure quit()
exit()
end
#===<<vib:begin>>=== modify using vib; do not remove this marker line
procedure ui_atts()
return ["size=512,640", "bg=pale gray"]
end
procedure ui(win, cbk)
return vsetup(win, cbk,
[":Sizer:::0,0,512,640:",],
["fontname:Text::51:5,616,444,19:font name: \\=",setfont],
["quit:Button:regular::471,615,35,20:QUIT",quit],
["subtitle:Rect:invisible::7,31,496,25:",revent],
["title:Rect:invisible::7,6,496,25:",revent],
["region:Rect:sunken::8,56,492,553:",revent],
)
end
#===<<vib:end>>=== end of section maintained by vib
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