// opcode 119 - get modifier mapping
/**
* @return valid: {@link Enum#next1()}
* @see <a href="XModifierKeymap.html">XModifierKeymap</a>
*/
public Enum modifier_mapping()
{
Request request = new Request(display, 119, 1);
Data reply = display.read_reply(request);
return(new Enum(reply, 32, reply.read1(1)));
}
// opcode 99 - list extensions
/**
* @return valid: {@link Enum#next_string()}
* @see <a href="XListExtensions.html">XListExtensions</a>
*/
public Enum extensions()
{
Request request = new Request(this, 99, 1);
Data reply = read_reply(request);
return(new Enum(reply, 32, reply.read1(1)));
}
public void init_server_info(Data reply)
{
connected = true;
release_no = reply.read4(8);
resource_base = reply.read4(12);
resource_mask = reply.read4(16);
int vendor_length = reply.read2(24);
extended_maximum_request_length
= maximum_request_length = reply.read2(26);
int screen_count = reply.read1(28);
int pixmap_format_count = reply.read1(29);
image_byte_order = reply.read1(30);
bitmap_format_bit_order = reply.read1(31);
bitmap_format_scanline_unit = reply.read1(32);
bitmap_format_scanline_pad = reply.read1(33);
int min_keycode = reply.read1(34);
int max_keycode = reply.read1(35);
input = new Input(this, min_keycode, max_keycode);
input.keyboard_mapping();
vendor = reply.read_string(40, vendor_length);
// pixmap formats
pixmap_formats = new Pixmap.Format [pixmap_format_count];
int pixmap_formats_offset = 40 + Data.len(vendor_length);
for (int i = 0; i < pixmap_format_count; i++)
{
pixmap_formats [i] = new Pixmap.Format(
reply, pixmap_formats_offset + i * 8);
}
// screens
if (default_screen_no < 0 || default_screen_no >= screen_count)
{
throw new Exception("Invalid screen number (screen-count "
+ screen_count + "): " + default_screen_no);
}
screens = new Screen [screen_count];
int screen_offset = pixmap_formats_offset + 8 * pixmap_format_count;
for (int i = 0; i < screen_count; i++)
{
screens [i] = new Screen(this, reply, screen_offset);
screen_offset += screens [i].Length;
}
}
public Event read_event(bool blocking, bool remove)
{
if (events.Count > 0)
{
lock (events) {
Event evt = (Event)events[0];
events.Remove(0);
return(evt);
}
}
Data message = null;
while (message == null)
{
/* ALWAYS yield, despite priorities of threads, to the thread running
* `read_reply(Request)' to avoid dead-lock.
*
* Note that yielding once does not guarantee the thread running
* `read_reply(Request)' will gain the control even when they have a
* higher priority than this thread. We must repeatively yield until
* it does so. The number of yields is unbounded.
*
* Reference: http://www.eng.uiowa.edu/~skaliann/books/jthreads/index.htm.
*/
while (reading_reply)
{
Thread.SpinWait(100);
}
lock (read_lock) {
message = read_message(blocking);
if (message.read1(0) == 1) // reply
{
saved_reply = message;
message = null;
}
}
}
if (!remove)
{
events.Add(message);
}
return((Event)message);
}
// opcode 101 - get keyboard mapping
/**
* @see <a href="XGetKeyboardMapping.html">XGetKeyboardMapping</a>
*/
public void keyboard_mapping()
{
int keysym_count = max_keycode - min_keycode + 1;
Request request = new Request(display, 101, 2);
request.write1(min_keycode);
request.write1(keysym_count);
Data reply = display.read_reply(request);
keysyms_per_keycode = reply.read1(1);
keysyms = new int [keysym_count];
for (int i = 0; i < keysym_count; i++)
{
keysyms [i] = reply.read4(32 + 4 * i * keysyms_per_keycode);
}
}
public void init_server_info(Data reply)
{
connected = true;
release_no = reply.read4 (8);
resource_base = reply.read4 (12);
resource_mask = reply.read4 (16);
int vendor_length = reply.read2 (24);
extended_maximum_request_length
= maximum_request_length = reply.read2 (26);
int screen_count = reply.read1 (28);
int pixmap_format_count = reply.read1 (29);
image_byte_order = reply.read1 (30);
bitmap_format_bit_order = reply.read1 (31);
bitmap_format_scanline_unit = reply.read1 (32);
bitmap_format_scanline_pad = reply.read1 (33);
int min_keycode = reply.read1 (34);
int max_keycode = reply.read1 (35);
input = new Input (this, min_keycode, max_keycode);
input.keyboard_mapping ();
vendor = reply.read_string (40, vendor_length);
// pixmap formats
pixmap_formats = new Pixmap.Format [pixmap_format_count];
int pixmap_formats_offset = 40 + Data.len (vendor_length);
for (int i=0; i<pixmap_format_count; i++)
pixmap_formats [i] = new Pixmap.Format (
reply, pixmap_formats_offset + i*8);
// screens
if (default_screen_no < 0 || default_screen_no >= screen_count)
throw new Exception ("Invalid screen number (screen-count "
+ screen_count + "): " + default_screen_no);
screens = new Screen [screen_count];
int screen_offset = pixmap_formats_offset + 8*pixmap_format_count;
for (int i=0; i<screen_count; i++) {
screens [i] = new Screen (this, reply, screen_offset);
screen_offset += screens [i].Length;
}
}
