QClipboardINCRTransaction Class Reference

Public Functions
	QClipboardINCRTransaction (Window w, Atom p, Atom t, int f, QByteArray d, unsigned int i)
int	x11Event (XEvent *event)
	~QClipboardINCRTransaction (void)

Public Variables
QByteArray	data
int	format
unsigned int	increment
unsigned int	offset
Atom	property
Atom	target
Window	window

Detailed Description

Definition at line 257 of file qclipboard_x11.cpp.

Constructors and Destructors

QClipboardINCRTransaction()

QClipboardINCRTransaction::QClipboardINCRTransaction	(	Window	w,
		Atom	p,
		Atom	t,
		int	f,
		QByteArray	d,
		unsigned int	i
	)

Definition at line 304 of file qclipboard_x11.cpp.

    : window(w), property(p), target(t), format(f), data(d), increment(i), offset(0u)
{
    DEBUG("QClipboard: sending %d bytes (INCR transaction %p)", d.size(), this);

    XSelectInput(X11->display, window, PropertyChangeMask);

    if (! transactions) {
        VDEBUG("QClipboard: created INCR transaction map");
        transactions = new TransactionMap;
        prev_event_filter = qApp->setEventFilter(qt_x11_incr_event_filter);
        incr_timer_id = QApplication::clipboard()->startTimer(clipboard_timeout);
    }
    transactions->insert(window, this);
}

~QClipboardINCRTransaction()

QClipboardINCRTransaction::~QClipboardINCRTransaction

(

void

)

Definition at line 321 of file qclipboard_x11.cpp.

{
    VDEBUG("QClipboard: destroyed INCR transacton %p", this);

    XSelectInput(X11->display, window, NoEventMask);

    transactions->remove(window);
    if (transactions->isEmpty()) {
        VDEBUG("QClipboard: no more INCR transactions");
        delete transactions;
        transactions = 0;

        (void)qApp->setEventFilter(prev_event_filter);

        if (incr_timer_id != 0) {
            QApplication::clipboard()->killTimer(incr_timer_id);
            incr_timer_id = 0;
        }
    }
}

Functions

x11Event()

int QClipboardINCRTransaction::x11Event

(

XEvent *

event

)

Definition at line 342 of file qclipboard_x11.cpp.

{
    if (event->type != PropertyNotify
        || (event->xproperty.state != PropertyDelete
            || event->xproperty.atom != property))
        return 0;

    // restart the INCR timer
    if (incr_timer_id) QApplication::clipboard()->killTimer(incr_timer_id);
    incr_timer_id = QApplication::clipboard()->startTimer(clipboard_timeout);

    unsigned int bytes_left = data.size() - offset;
    if (bytes_left > 0) {
        unsigned int xfer = qMin(increment, bytes_left);
        VDEBUG("QClipboard: sending %d bytes, %d remaining (INCR transaction %p)",
               xfer, bytes_left - xfer, this);

        XChangeProperty(X11->display, window, property, target, format,
                        PropModeReplace, (uchar *) data.data() + offset, xfer);
        offset += xfer;
    } else {
        // INCR transaction finished...
        XChangeProperty(X11->display, window, property, target, format,
                        PropModeReplace, (uchar *) data.data(), 0);
        delete this;
    }

    return 1;
}

Properties

data

QByteArray QClipboardINCRTransaction::data

Definition at line 268 of file qclipboard_x11.cpp.

Referenced by qt_init_timestamp_scanner(), and x11Event().

format

int QClipboardINCRTransaction::format

Definition at line 267 of file qclipboard_x11.cpp.

increment

unsigned int QClipboardINCRTransaction::increment

Definition at line 269 of file qclipboard_x11.cpp.

Referenced by x11Event().

offset

unsigned int QClipboardINCRTransaction::offset

Definition at line 270 of file qclipboard_x11.cpp.

Referenced by x11Event().

property

Atom QClipboardINCRTransaction::property

Definition at line 266 of file qclipboard_x11.cpp.

Referenced by x11Event().

target

Atom QClipboardINCRTransaction::target

Definition at line 266 of file qclipboard_x11.cpp.

Referenced by x11Event().

window

Window QClipboardINCRTransaction::window

Definition at line 265 of file qclipboard_x11.cpp.

Referenced by QClipboardINCRTransaction(), x11Event(), and ~QClipboardINCRTransaction().

---

The documentation for this class was generated from the following file:

• /src/gui/kernel/qclipboard_x11.cpp