//throws IOException
public static Data build(Display display)
{
// display.connection.socket.setSoTimeout (0); // FIXME use Socket.Select instead.
int code = display.connection.din.Read ();
/* Set the timeout to 10 seconds, a very safe bet to avoid premature
* timeout in slow networks. Setting a timeout avoid being locked
* when reading a reply or an event of a shorter length than
* expected, due to bugs in X server. For instance, the reply of
* {@link DBE#visual_info(Drawable[])} has a wrong reply length field
* in XFree86 4.0.1 or eariler servers.
*
* Note that timeout is reset to 0 (no timeout) before reading the
* first byte of the message because a blocking read of the next event
* or a blocking read of the expected reply from a slow X server should
* not be timed out.
*/
// display.connection.socket.setSoTimeout (10000); // FIXME use Socket.Select instead.
if (code == 0) // X Error
throw build_error (display);
else if (code == 1) // X Reply
return build_reply (display);
else // X Event
return build_event (display, code);
}
//throws NotFoundException
protected Extension(Display display, String name,
String [] minor_opcode_strings, int error_count, int event_count)
{
this.display = display;
this.name = name;
Display.ExtensionReply er = display.extension (name);
if (!er.present ()) throw new NotFoundException (name);
first_event = er.first_event ();
first_error = er.first_error ();
major_opcode = er.major_opcode ();
// register opcode strings
display.extension_opcode_strings [major_opcode - 128] = name;
display.extension_minor_opcode_strings [major_opcode - 128]
= minor_opcode_strings;
// register error factory
for (int i=0; i<error_count; i++)
display.extension_error_factories [first_error - 128 + i]
= (ErrorFactory) this;
// register event factory
for (int i=0; i<event_count; i++)
display.extension_event_factories [first_event - 64 + i]
= (EventFactory) this;
}
public XBM(Display display, int width, int height, int [] xbm)
: base(display, width, height)
{
// take <code>int</code> as parameter to avoid casting in java
for (int i=0; i<data.Length; i++)
data [i] = (byte) xbm [i];
}
public Error build(Display display, Data data, int code,
int seq_no, int bad, int minor_opcode, int major_opcode)
{
String error_string = ERROR_STRINGS [code - first_error];
return new Error (display, error_string, code, seq_no, bad,
minor_opcode, major_opcode);
}
/** Writing. */
public Event(Display display, int code, int window_offset)
{
this.display = display;
this.window_offset = window_offset;
data = new byte [32];
data [0] = (byte) code;
}
//throws NotFoundException {
// shape opcode 0 - query version
/**
* @see <a href="XShapeQueryExtension.html">XShapeQueryExtension</a>
*/
public Shape(Display display)
: base(display, "SHAPE", MINOR_OPCODE_STRINGS, 0, 1)
{
// check version before any other operations
Request request = new Request (display, major_opcode, 0, 1);
Data reply = display.read_reply (request);
server_major_version = reply.read2 (8);
server_minor_version = reply.read2 (10);
}
/** Reading. */
public Event(Display display, byte [] data, int window_offset)
: base(data)
{
this.display = display;
this.window_offset = window_offset;
synthetic = (this.data [0] & 0x80) != 0;
this.data [0] &= 0x7f;
}
//throws gnu.x11.extension.NotFoundException {
// print opcode 0 - query version
/**
* @see <a href="XpQueryVersion.html">XpQueryVersion</a>
*/
public Print(Display display)
: base(display, "XpExtension", MINOR_OPCODE_STRINGS, 2, 2)
{
// check version before any other operations
Request request = new Request (display, major_opcode, 0, 1);
Data reply = display.read_reply (request);
server_major_version = reply.read2 (4);
server_minor_version = reply.read2 (4);
}
public ZPixmap(Display display, int width, int height, Pixmap.Format format)
: base(width, height, FORMAT, format)
{
image_byte_order = display.image_byte_order;
pixel_byte_count = pixmap_format.bits_per_pixel () / 8;
if (display.default_depth < 24)
throw new Error ("Unsupported root depth < 24: " +
display.default_depth);
}
public Bitmap(Display display, int width, int height)
: base(width, height, FORMAT, display.pixmap_formats [0])
{
if (display.image_byte_order != LSB_FIRST
|| display.bitmap_format_bit_order != LEAST_SIGNIFICANT)
throw new Error ("Unsupported image format");
scanline_unit = display.bitmap_format_scanline_unit;
unit_byte_count = scanline_unit / 8;
}
public ZPixmap(Display display)
{
// for subclass loading
format = FORMAT;
pixmap_format = display.default_pixmap_format;
image_byte_order = display.image_byte_order;
pixel_byte_count = pixmap_format.bits_per_pixel () / 8;
if (display.default_depth < 24)
throw new Error ("Unsupported root depth < 24: " +
display.default_depth);
}
// opcode 45 - open font
/**
* @see <a href="XLoadFont.html">XLoadFont</a>
*/
public Font(Display display, String name)
: base(display)
{
this.name = name;
Request request = new Request (display, 45, 3+Data.unit (name));
request.write4 (id);
request.write2 (name.Length);
request.write2_unused ();
request.write1 (name);
display.send_request (request);
}
//throws NotFoundException {
// evi opcode 0 - get version
/**
* @see <a href="XeviQueryVersion.html">XeviQueryVersion</a>
*/
public EVI(Display display)
: base(display, "Extended-Visual-Information", MINOR_OPCODE_STRINGS)
{
// check version before any other operations
/* Note that the specification says the request includes a major and a
* minor version, but most implementation (xfree86 3.3/4.0) does not.
* Which one is bugged?
*/
Request request = new Request (display, major_opcode, 0, 1);
Data reply = display.read_reply (request);
server_major_version = reply.read2 (8);
server_minor_version = reply.read2 (10);
}
// TODO
public XPM(Display display, String [] xpm)
: base(display)
{
String [] values = xpm [0].Split(new char[] { ' ' });
width = Int32.Parse (values[0]);
height = Int32.Parse (values[1]);
int num_colors = Int32.Parse (values[2]);
int chars_per_pixel = Int32.Parse (values[3]);
// TODO how to select best SUITABLE format?
format = FORMAT;
pixmap_format = display.default_pixmap_format;
image_byte_order = display.image_byte_order;
pixel_byte_count = pixmap_format.bits_per_pixel () / 8;
init ();
Hashtable mapping = new Hashtable (2*num_colors);
Colormap cmap = display.default_colormap;
for (int i=0; i<num_colors; i++) {
String [] color = xpm [i+1].Split(new char[] {' '});
String symbol = color[0];
while (color.Length>1
&& color[1].Equals ("c")) { // can only parse c for now
String color_value = color[2];
if (color_value[0] == '#') {
int pixel = Int32.Parse (
color_value.Substring (1, color_value.Length), System.Globalization.NumberStyles.HexNumber);
mapping.Add (symbol, new Color (pixel));
} else // not starting with #
mapping.Add (symbol, cmap.alloc_named_color (color_value));
}
}
// TODO more efficient linear for-loop
for (int y=0; y<height; y++) {
String pixels = xpm [1+num_colors+y];
for (int x=0; x<width; x++) {
String symbol = pixels.Substring (x*chars_per_pixel,
(x+1)*chars_per_pixel);
Color color = (Color) mapping[symbol];
set (x, y, color.pixel);
}
}
}
// xc-misc opcode 0 - get version
public XCMisc(gnu.x11.Display display) //throws NotFoundException {
: base(display, "XC-MISC", MINOR_OPCODE_STRINGS)
{
// check version before any other operations
Request request = new Request(display, major_opcode, 0, 2);
request.write2(CLIENT_MAJOR_VERSION);
request.write2(CLIENT_MINOR_VERSION);
Data reply = display.read_reply(request);
server_major_version = reply.read2(8);
server_minor_version = reply.read2(10);
}
// dbe opcode 0 - get version
public DBE(gnu.x11.Display display) //throws NotFoundException {
: base(display, "DOUBLE-BUFFER", MINOR_OPCODE_STRINGS, 1, 0)
{
// check version before any other operations
Request request = new Request(display, major_opcode, 0, 2);
request.write1(CLIENT_MAJOR_VERSION);
request.write1(CLIENT_MINOR_VERSION);
Data reply = display.read_reply(request);
server_major_version = reply.read1(8);
server_minor_version = reply.read1(9);
}
protected Application(String [] args)
: base(args, new Option (args))
{
// cast `gnu.util.Option option' to `gnu.x11.Option'
option = (Option) base.option;
String env = Environment.GetEnvironmentVariable ("DISPLAY");
if(env==null || env.Length==0) env="localhost:1";
Display.Name display_name = option.display_name ("display",
"X server to connect to", new Display.Name (env));
int send_mode = option.Enum ("send-mode", "request sending mode",
Connection.SEND_MODE_STRINGS, Connection.ASYNCHRONOUS);
if (help_option) return;
display = new Display (display_name);
display.connection.send_mode = send_mode;
}
public Display.Name display_name(String name, String description,
Display.Name default_value)
{
Display.Name retval = default_value;
try {
String opt = option (name);
if (opt != null) retval = new Display.Name (opt);
} catch (Exception e) {
invalid_names.Append (name + ", ");
// fall through
}
add_spec (name, "display name", description, default_value.ToString (),
retval.ToString ());
return retval;
}
//throws IOException
public static Error build_connection_error(Display display)
{
BinaryReader din = display.connection.din;
int msg_len = (Int32)din.ReadUInt32 ();
int major_version = din.ReadUInt16 ();
int minor_version = din.ReadUInt16 ();
int total_len = 4 * din.ReadUInt16 ();
byte [] buffer = new byte [total_len];
din.Read (buffer,0,total_len);
Decoder dec = Encoding.ASCII.GetDecoder();
char [] d = new char[msg_len];
msg_len = dec.GetChars(buffer,0,msg_len,d,0);
String reason = new String (d, 0, msg_len);
return new Error ("X server connection error"
+ "\n protocol-major-version: " + major_version
+ "\n protocol-minor-version " + minor_version
+ "\n reason: " + reason);
}
//throws IOException
// WARNING: very naive parsing
// TODO
public PPM(Display display, StreamReader bin)
: base(display)
{
// format
String format = bin.ReadLine ();
if (!(format.Equals ("P6")))
throw new Error ("Unsupported format: " + format);
// dimension
String dimension = bin.ReadLine ();
int index = dimension.IndexOf (' ');
try {
width = Int32.Parse (dimension.Substring (0, index));
height = Int32.Parse (dimension.Substring (
index+1, dimension.Length));
} catch (Exception e) {
throw new Error ("Invalid dimension: " + dimension);
}
String color_count = bin.ReadLine ();
// fill up data
init ();
Colormap cmap = display.default_colormap;
for (int y=0; y<height; y++)
for (int x=0; x<width; x++) {
int r = bin.Read ();
int g = bin.Read ();
int b = bin.Read ();
// FIXME cache and index color
set (x, y, cmap.alloc_color8 (r, g, b));
}
}
public Request (Display display, int opcode, int unit) {
init (display, opcode, 0, unit);
}
public Request (Display display, int opcode, bool b, int unit) {
init (display, opcode, b ? 1 : 0, unit);
}
/**
* @see #Atom(Display, String, bool)
*/
public static Object intern(Display display, String name,
bool only_if_exists)
{
Object value = display.atom_names[name];
if (value != null && value is Atom) return value;
return new Atom (display, name, only_if_exists);
}
/**
* @see #Atom(Display, int, bool)
*/
public static Object intern(Display display, int id,
bool only_if_exists)
{
Object value = display.atom_ids[id];
if (value != null && value is Atom) return value;
return new Atom (display, id, only_if_exists);
}
/**
* @see #Atom(Display, String, bool)
*/
public static Object intern(Display display, String name)
{
return intern (display, name, false);
}
/**
* @see #Atom(Display, int, bool)
*/
public static Object intern(Display display, int id)
{
return intern (display, id, false);
}
public gnu.x11.Error build(gnu.x11.Display display, Data data,
int code, int seq_no, int bad, int minor_opcode, int major_opcode)
{
return(new gnu.x11.Error(display, ERROR_STRING, code, seq_no, bad,
minor_opcode, major_opcode));
}
// opcode 16 - intern atom
/**
* @see <a href="XInternAtom.html">XInternAtom</a>
*/
public Atom(Display display, String name, bool only_if_exists)
{
this.display = display;
this.name = name;
Request request = new Request (display, 16, only_if_exists, 2+Data.unit (name));
request.write2 (name.Length);
request.write2_unused ();
request.write1 (name);
Data reply = display.read_reply (request);
id = reply.read4 (8);
display.atom_ids.Add (id, this);
display.atom_names.Add (name, this);
}
public FocusOut(Display display, byte [] data)
: base(display, data, 8)
{
}
public Input(Display display, int min_keycode, int max_keycode)
{
this.display = display;
this.min_keycode = min_keycode;
this.max_keycode = max_keycode;
}
public ValueList (Display display, int opcode, int unit,
int id, gnu.x11.ValueList vl) {
this.display = display;
this.opcode = opcode;
this.unit = unit;
this.id = id;
this.vl = vl;
}
// opcode 17 - get atom name
/**
* @see <a href="XGetAtomName.html">XGetAtomName</a>
*/
public Atom(Display display, int id, bool only_if_exists)
{
this.display = display;
this.id = id;
Request request = new Request (display, 17, 2);
request.write4 (id);
Data reply = display.read_reply (request);
int len = reply.read2 (8);
Decoder dec = Encoding.ASCII.GetDecoder();
char [] d = new char[len];
len = dec.GetChars(reply.data,32,len,d,0);
name = new String (d, 0, len);
display.atom_ids.Add (id, this);
display.atom_names.Add (name, this);
}
public void init (Display display, int opcode,
int second_field, int unit) {
// x extensions use extended_maximum_request_length? (glx does not). if
// not, we should check opcode here
if (display.connected
&& unit > display.extended_maximum_request_length)
throw new Exception ("Request too long (in byte): "
+ (unit*4) + " > "
+ (display.extended_maximum_request_length*4));
// big requests in use
bool big = display.big_requests_present
&& unit > display.maximum_request_length;
if (big) unit++; // extra storage
length = unit * 4;
data = new byte [length];
write1 (opcode);
write1 (second_field);
if (!big)
write2 (unit);
else {
write2 (0); // extended length flag
write4 (unit);
}
}
public BigRequests(gnu.x11.Display display) : base(display, "BIG-REQUESTS", null)
{
}
