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xlibtest.pir
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xlibtest.pir
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# Copyright (C) 2008, Parrot Foundation.
=head1 TITLE
xlibtest.pir - Test NCI with libX11
=head1 SYNOPSIS
This is an initial version, be careful and not expect too much.
Compile Xlib.pir to Xlib.pbc before usage:
../../parrot -o Xlib.pbc Xlib.pir [ filename ]
Press Escape key to exit.
Press S to save to filename
=cut
.include 'Xlibconstants.pir'
# Key for JSON line data
.const string JKEY_LINES = 'lines'
.sub main :main
.param pmc args
.local string filename
filename = args [1]
say filename
load_bytecode 'Xlib.pbc'
# Initialize and print some information
show_display_name()
.local pmc openDisplay
openDisplay = get_global ['Xlib'], 'OpenDisplay'
.local pmc display
display = openDisplay('')
display.'hello'()
print 'DefaultScreen: '
$I0 = display.'DefaultScreen'()
say $I0
print 'BlackPixel: '
.local int black
black = display.'BlackPixel'()
say black
print 'WhitePixel: '
.local int white
white = display.'WhitePixel'(0)
say white
# Create and map the window
.local pmc rw
rw = display.'RootWindow'()
.local pmc w
w = display.'CreateSimpleWindow'(rw, 0, 0, 600, 400, 0, 0, white)
$I0 = KeyPressMask
bor $I0, ButtonPressMask
bor $I0, ButtonReleaseMask
bor $I0, PointerMotionMask
bor $I0, StructureNotifyMask
bor $I0, ExposureMask
w.'SelectInput'($I0)
w.'StoreName'('Hello, parrot')
w.'Map'()
# Get keycode of the Escape key to check in key press event
.local pmc KeysymToString
KeysymToString = get_global ['Xlib'], 'KeysymToString'
.local pmc StringToKeysym
StringToKeysym = get_global ['Xlib'], 'StringToKeysym'
# print 'Escape-'
$I0 = StringToKeysym('Escape')
# print $I0
# print '-'
.local int codeEscape
codeEscape = display.'KeysymToKeycode'($I0)
# say codeEscape
$I0 = StringToKeysym('S')
# print $I0
# print '-'
.local int codeS
codeS = display.'KeysymToKeycode'($I0)
# say codeS
.local pmc listline
listline = load(filename)
mainloop:
.local pmc line
# Event loop
.local pmc newEvent
newEvent = get_global ['Xlib'], 'newEvent'
.local pmc event
event = newEvent()
.local int pressed
.local int px
.local int py
.local int lastpx
.local int lastpy
pressed = 0
lastpx = 0
lastpy = 0
loop:
$I0 = display.'NextEvent'(event)
$I1 = event.'type'()
eq $I1, KeyPress, keypress
eq $I1, KeyRelease, loop
eq $I1, ButtonPress, press
eq $I1, ButtonRelease, release
eq $I1, MotionNotify, paint
eq $I1, Expose, expose
eq $I1, ClientMessage, message
eq $I1, DestroyNotify, finish
# Unhandled event type
#say $I1
goto loop
keypress:
$I0 = event.'keycode'()
# say 'Keypress'
# say $I0
# $I1 = display.KeycodeToKeysym($I0)
# say $I1
# $S0 = KeysymToString($I1)
# say $S0
# eq $S0, 'Escape', finish
if $I0 == codeEscape goto handleescape
if $I0 == codeS goto handleS
goto loop
handleescape:
w.'Unmap'()
w.'Destroy'()
goto loop
handleS:
say 'S'
save(filename, listline)
goto loop
press:
lastpx = event.'x'()
lastpy = event.'y'()
w.'DrawPoint'(lastpx, lastpy)
line = new [ 'ResizableIntegerArray' ]
push listline, line
push line, lastpx
push line, lastpy
pressed = 1
goto loop
release:
pressed = 0
goto loop
paint:
unless pressed goto loop
# print $I1
# print ': '
# $I0 = event.serial()
# print $I0
# print ' '
# $I0 = event.time()
# print $I0
# print ' '
px = event.'x'()
# print px
# print ' '
py = event.'y'()
# print py
# say ''
eq lastpx, px, checky
goto draw
checky:
eq lastpy, py, loop
draw:
w.'DrawLine'(lastpx, lastpy, px, py)
lastpx = px
lastpy = py
push line, px
push line, py
goto loop
expose:
#say 'Exposed'
$I0 = elements listline
#say $I0
unless $I0 goto loop
$I1 = 0
nextline:
#print $I0
#print ' - '
#say $I1
eq $I1, $I0, loop
$P0 = listline[$I1]
inc $I1
$I2 = elements $P0
#say $I2
unless $I2 goto nextline
$I3 = 0
lastpx = $P0[$I3]
inc $I3
lastpy = $P0[$I3]
inc $I3
w.'DrawPoint'(lastpx, lastpy)
nextpoint:
eq $I3, $I2, nextline
px = $P0[$I3]
inc $I3
py = $P0[$I3]
inc $I3
w.'DrawLine'(lastpx, lastpy, px, py)
lastpx = px
lastpy = py
goto nextpoint
goto loop
message:
w.'Unmap'()
w.'Destroy'()
goto loop
# End. Close window and display, and exit.
finish:
say 'Exiting'
display.'Close'()
.end
#-----------------------------------------------------------------------
.sub show_display_name
print 'DisplayName: "'
.local pmc DisplayName
DisplayName = get_global ['Xlib'], 'DisplayName'
.local string dname
dname = DisplayName()
print dname
say '"'
.end
#-----------------------------------------------------------------------
.sub load
.param string filename
.local pmc listline
if null filename goto newfile
push_eh newfile
.local pmc handle
handle = new 'FileHandle'
handle.'open'(filename, 'r')
pop_eh
push_eh failed
.local string jsonfile
jsonfile = handle.'readall'()
handle.'close'()
load_language 'data_json'
.local pmc json, jsonobject, jsondata
json = compreg 'data_json'
.local pmc jsonobject
jsonobject = json.'compile'(jsonfile)
jsondata = jsonobject()
listline = jsondata [JKEY_LINES]
goto finish
failed:
.local pmc exception
.get_results(exception)
pop_eh
print "\nERROR LOADING FILE: "
print exception
print "\n\n"
newfile:
listline = new [ 'ResizablePMCArray' ]
finish:
.return(listline)
.end
#-----------------------------------------------------------------------
.sub save
.param string filename
.param pmc listline
push_eh failed
load_bytecode 'JSON.pbc'
.local pmc jsondata
jsondata = new [ 'Hash' ]
jsondata [JKEY_LINES] = listline
.local string jsonfile
jsonfile = _json(jsondata)
.local pmc handle
handle = new 'FileHandle'
handle.'open'(filename, 'w')
print handle, jsonfile
print handle, "\n"
handle.'close'()
.return()
failed:
.local pmc exception
.get_results(exception)
pop_eh
print "\nERROR SAVING FILE: "
print exception
print "\n\n"
.end
#-----------------------------------------------------------------------
# Local Variables:
# mode: pir
# fill-column: 100
# End:
# vim: expandtab shiftwidth=4 ft=pir: