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Length: 10271 (0x281f)
Types: TextFile
Names: »draw.clu«
└─⟦a0efdde77⟧ Bits:30001252 EUUGD11 Tape, 1987 Spring Conference Helsinki
└─⟦526ad3590⟧ »EUUGD11/gnu-31mar87/X.V10.R4.tar.Z«
└─⟦2109abc41⟧
└─⟦this⟧ »./X.V10R4/xdemo/draw.clu«
pgray = "\252\252\125\125\252\252\125\125\252\252\125\125\252\252\125\125" ||
"\252\252\125\125\252\252\125\125\252\252\125\125\252\252\125\125"
pclear = "\000\000\000\000\000\000\370\037\010\020\010\020\010\020\010\020" ||
"\010\020\010\020\010\020\010\020\370\037\000\000\000\000\000\000"
pset = "\377\377\377\377\377\377\007\340\367\357\367\357\367\357\367\357" ||
"\367\357\367\357\367\357\367\357\007\340\377\377\377\377\377\377"
pdoff = "\000\000\000\000\000\000\230\031\000\020\000\000\010\000\010\020" ||
"\000\020\000\000\010\020\010\020\140\006\000\000\000\000\000\000"
pdon = "\377\377\377\377\377\377\147\346\377\357\377\377\367\377\367\357" ||
"\377\357\377\377\367\357\367\357\237\371\377\377\377\377\377\377"
pdot = "\377\377\377\377\377\377\257\352\367\377\377\357\367\377\377\357" ||
"\367\377\377\357\367\377\377\357\127\365\377\377\377\377\377\377"
qs = sequence[string]
digits = qs$[" 0", " 1", " 2", " 3", " 4", " 5", " 6", " 7",
" 8", " 9", "10", "11", "12", "13", "14", "15"]
funcs = qs$[" 0", " &", "&~", " s", "~&", " d", " ^", " |",
"n|", "~^", "~d", "|~", "~s", "~|", "n&", " 1"]
drawdemo = proc ()
vcount = 500
x_keymap$load("")
bwidth: int := int$parse(xdemo_default("draw", "BorderWidth"))
except when not_found, overflow, bad_format: bwidth := 2 end
back: x_pixmap := x_display$white()
fore: x_pixmap := x_display$black()
bdr: x_pixmap := x_display$black()
plane: int := 1
backpix: int := WhitePixel
drawpix: int := BlackPixel
mousepix: int := BlackPixel
if x_display$cells() > 2
then begin
r, g, b: int := x_parse_color(xdemo_default("draw", "Border"))
bdr := x_pixmap$tile(x_display$alloc_color(r, g, b))
end except when not_found: end
cback: string := xdemo_default("draw", "Background")
except when not_found: cback := "" end
cfore: string := xdemo_default("draw", "Foreground")
except when not_found: cfore := "" end
if string$empty(cback) cand string$empty(cfore)
then exit done end
pixs: pixellist
pixs, plane := x_display$alloc_cells(1, 1, false)
drawpix := pixs[1]
fore := x_pixmap$tile(drawpix)
backpix := drawpix + plane
back := x_pixmap$tile(backpix)
r, g, b: int
if string$empty(cback)
then r, g, b := x_display$query_color(WhitePixel)
else r, g, b := x_parse_color(cback)
end
x_display$store_color(backpix, r, g, b)
if string$empty(cfore)
then r, g, b := x_display$query_color(BlackPixel)
else r, g, b := x_parse_color(cfore)
end
x_display$store_color(drawpix, r, g, b)
begin
r, g, b := x_parse_color(xdemo_default("draw", "Mouse"))
mousepix := x_display$alloc_color(r, g, b)
end except when not_found: end
end except when done: end
w: x_window, wid0, hgt0: int := x_cons("draw", back, bdr,
xdemo_geometry(), "=400x400+1+1",
40, 40, bwidth)
w.name := "draw"
x_window$map(w)
sx, sy, wd, ht, bw, sm, wk: int, iw: x_window := x_window$query(w)
w.cursor := x_cursor$scons(cross_width, cross_height, cross, cross_mask,
backpix, mousepix, cross_x, cross_y, GXcopy)
white: x_pixmap := back
black: x_pixmap := fore
bm: x_bitmap := x_bitmap$screate(16, 16, pgray)
gray: x_pixmap := x_pixmap$create(bm, backpix, drawpix)
bm := x_bitmap$screate(16, 16, pclear)
clear: x_pixmap := x_pixmap$create(bm, backpix, drawpix)
bm := x_bitmap$screate(16, 16, pset)
set: x_pixmap := x_pixmap$create(bm, backpix, drawpix)
bm := x_bitmap$screate(16, 16, pdoff)
doff: x_pixmap := x_pixmap$create(bm, backpix, drawpix)
bm := x_bitmap$screate(16, 16, pdon)
don: x_pixmap := x_pixmap$create(bm, backpix, drawpix)
bm := x_bitmap$screate(16, 16, pdot)
dot: x_pixmap := x_pixmap$create(bm, backpix, drawpix)
wsel: x_window := x_window$create(0, 0, 16, 16, set, w, 0, white)
wdot: x_window := x_window$create(42, 0, 16, 16, dot, w, 0, white)
wclear: x_window := x_window$create(58, 0, 16, 16, clear, w, 0, white)
wset: x_window := x_window$create(74, 0, 16, 16, set, w, 0, white)
wdoff: x_window := x_window$create(90, 0, 16, 16, doff, w, 0, white)
wdon: x_window := x_window$create(106, 0, 16, 16, don, w, 0, white)
wblack: x_window := x_window$create(122, 0, 16, 16, black, w, 0, white)
wwhite: x_window := x_window$create(138, 0, 16, 16, white, w, 0, white)
wgray: x_window := x_window$create(154, 0, 16, 16, gray, w, 0, white)
wheight: x_window := x_window$create(200, -1, 16, 16, white, w, 1, black)
wwidth: x_window := x_window$create(232, -1, 16, 16, white, w, 1, black)
wfunc: x_window := x_window$create(264, -1, 16, 16, white, w, 1, black)
wdraw: x_window := x_window$create(-1, 16, wd, ht - 16, white, w,
1, black)
x_window$map_subwindows(w)
fn: string := xdemo_default("draw", "BodyFont")
except when not_found: fn := "timrom10i" end
font: x_font := x_font$create(fn)
tfont: x_font := x_font$create("6x10")
none: x_window := x_window$none()
nobit: x_bitmap := x_bitmap$none()
pat: x_pixmap := set
wclear.input := ButtonPressed
wset.input := ButtonPressed
wdoff.input := ButtonPressed
wdon.input := ButtonPressed
wdot.input := ButtonPressed
wblack.input := ButtonPressed
wwhite.input := ButtonPressed
wgray.input := ButtonPressed
wheight.input := KeyPressed
wwidth.input := KeyPressed
wfunc.input := KeyPressed
wdraw.input := ButtonPressed + ExposeWindow + KeyPressed
vlst: x_vlist := x_vlist$create(vcount + 1)
e: event := x_input$empty_event()
e.kind := ExposeWindow
x_input$enq(e)
width: int := 1
height: int := 1
func: int := GXcopy
lastx: int := -1
lasty: int := -1
curx: int := -1
while true do
n: int := 0
while n < vcount do
x_input$deq(e)
if e.kind = ExposeWindow
then n := 0
nht, nwd: int
sx, sy, nwd, nht, bw, sm, wk, iw := x_window$query(w)
if nht ~= ht cor nwd ~= wd
then wd := nwd
ht := nht
if wd <= 40 cor ht <= 40
then x_window$destroy(w)
return
end
x_window$change(wdraw, wd, ht - 16)
end
x_window$text(wwidth, digits[width + 1], tfont,
drawpix, backpix, 3, 2)
x_window$text(w, "x", tfont, drawpix, backpix,
221, 2)
x_window$text(wheight, digits[height + 1], tfont,
drawpix, backpix, 3, 2)
x_window$text(wfunc, funcs[func + 1], tfont,
drawpix, backpix, 3, 2)
break
end
if e.kind = KeyPressed cand
(e.win = wwidth cor e.win = wheight cor e.win = wfunc)
then c: char := x_keymap$getc(e.value, e.mask)
except when none, multi (*): continue end
i: int
if c >= '0' cand c <= '9'
then i := char$c2i(c) - char$c2i('0')
elseif c >= 'a' cand c <= 'f'
then i := char$c2i(c) - char$c2i('a') + 10
else continue end
if e.win = wwidth
then if i = 0
then continue end
width := i
elseif e.win = wheight
then if i = 0
then continue end
height := i
else func := i end
strs: qs := digits
if e.win = wfunc
then strs := funcs end
x_window$text(e.win, strs[i + 1], tfont,
drawpix, backpix, 3, 2)
continue
end
if e.kind = KeyPressed
then s: string := x_keymap$gets(e.value, e.mask)
except when none: continue end
if e.x ~= lastx cor e.y ~= lasty
then lastx := e.x
lasty := e.y
curx := lastx
end
pix: int := backpix
if pat = set cor pat = don cor pat = black
then pix := drawpix end
x_window$text_mask_pad(wdraw, s, font, pix, 0, 0,
curx, lasty, func, plane)
curx := curx + x_font$width(font, s)
continue
end
if e.win ~= wdraw
then if e.win = wset
then pat := set
elseif e.win = wclear
then pat := clear
elseif e.win = wdon
then pat := don
elseif e.win = wdoff
then pat := doff
elseif e.win = wdot
then pat := dot
elseif e.win = wblack
then pat := black
elseif e.win = wwhite
then pat := white
elseif e.win = wgray
then pat := gray
end
wsel.background := pat
x_window$clear(wsel)
continue
end
if e.kind = ButtonPressed cand e.value = MiddleButton
then break end
x_window$pix_fill(wdraw, 0, nobit, e.x, e.y, 2, 2, GXinvert, plane)
n := n + 1
if e.value = LeftButton
then x_vlist$store(vlst, n, e.x, e.y, VertexCurved)
else x_vlist$store(vlst, n, e.x, e.y, 0)
end
end
for i: int in int$from_to(1, n) do
x, y, f: int := x_vlist$fetch(vlst, i)
x_window$pix_fill(wdraw, 0, nobit, x, y, 2, 2, GXinvert, plane)
end
if n > 2
then x, y, f: int := x_vlist$fetch(vlst, 1)
x_vlist$store(vlst, 1, x, y, f + VertexStartClosed)
x_vlist$store(vlst, n + 1, x, y, f + VertexEndClosed)
n := n + 1
elseif n > 0
then x, y, f: int := x_vlist$fetch(vlst, n)
x_vlist$store(vlst, n, x, y, f + VertexDrawLastPoint)
end
if n = 0
then x_window$clear(wdraw)
elseif pat = set
then x_window$draw(wdraw, vlst, n, drawpix, width, height,
func, plane)
elseif pat = clear
then x_window$draw(wdraw, vlst, n, backpix, width, height,
func, plane)
elseif pat = don
then x_window$draw_dashed(wdraw, vlst, n, drawpix, width, height,
1, 2, 4, func, plane)
elseif pat = doff
then x_window$draw_dashed(wdraw, vlst, n, backpix, width, height,
1, 2, 4, func, plane)
elseif pat = dot
then x_window$draw_patterned(wdraw, vlst, n, 1, drawpix,
width, height, 1, 2, 2, func, plane)
elseif pat = black cand n > 2
then x_window$draw_filled(wdraw, vlst, n, drawpix, func, plane)
elseif pat = white cand n > 2
then x_window$draw_filled(wdraw, vlst, n, backpix, func, plane)
elseif pat = gray cand n > 2
then x_window$draw_tiled(wdraw, vlst, n, gray, func, plane)
end
end
end drawdemo