70a54b0169
With latest clang 13.0.0 we get ../ui/clipboard.c:47:34: error: variable 'old' set but not used [-Werror,-Wunused-but-set-variable] g_autoptr(QemuClipboardInfo) old = NULL; ^ The compiler can't tell that we only declared this variable in order to get the side effect of free'ing it when out of scope. This pattern is a little dubious for a use of g_autoptr, so rewrite the code to avoid it. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: Daniel P. Berrangé <berrange@redhat.com> [AJB: fix merge conflict] Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20211215141949.3512719-2-berrange@redhat.com> Message-Id: <20220105135009.1584676-2-alex.bennee@linaro.org>
158 lines
3.9 KiB
C
158 lines
3.9 KiB
C
#include "qemu/osdep.h"
|
|
#include "ui/clipboard.h"
|
|
|
|
static NotifierList clipboard_notifiers =
|
|
NOTIFIER_LIST_INITIALIZER(clipboard_notifiers);
|
|
|
|
static QemuClipboardInfo *cbinfo[QEMU_CLIPBOARD_SELECTION__COUNT];
|
|
|
|
void qemu_clipboard_peer_register(QemuClipboardPeer *peer)
|
|
{
|
|
notifier_list_add(&clipboard_notifiers, &peer->notifier);
|
|
}
|
|
|
|
void qemu_clipboard_peer_unregister(QemuClipboardPeer *peer)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < QEMU_CLIPBOARD_SELECTION__COUNT; i++) {
|
|
qemu_clipboard_peer_release(peer, i);
|
|
}
|
|
notifier_remove(&peer->notifier);
|
|
}
|
|
|
|
bool qemu_clipboard_peer_owns(QemuClipboardPeer *peer,
|
|
QemuClipboardSelection selection)
|
|
{
|
|
QemuClipboardInfo *info = qemu_clipboard_info(selection);
|
|
|
|
return info && info->owner == peer;
|
|
}
|
|
|
|
void qemu_clipboard_peer_release(QemuClipboardPeer *peer,
|
|
QemuClipboardSelection selection)
|
|
{
|
|
g_autoptr(QemuClipboardInfo) info = NULL;
|
|
|
|
if (qemu_clipboard_peer_owns(peer, selection)) {
|
|
/* set empty clipboard info */
|
|
info = qemu_clipboard_info_new(NULL, selection);
|
|
qemu_clipboard_update(info);
|
|
}
|
|
}
|
|
|
|
bool qemu_clipboard_check_serial(QemuClipboardInfo *info, bool client)
|
|
{
|
|
if (!info->has_serial ||
|
|
!cbinfo[info->selection] ||
|
|
!cbinfo[info->selection]->has_serial) {
|
|
return true;
|
|
}
|
|
|
|
if (client) {
|
|
return cbinfo[info->selection]->serial >= info->serial;
|
|
} else {
|
|
return cbinfo[info->selection]->serial > info->serial;
|
|
}
|
|
}
|
|
|
|
void qemu_clipboard_update(QemuClipboardInfo *info)
|
|
{
|
|
QemuClipboardNotify notify = {
|
|
.type = QEMU_CLIPBOARD_UPDATE_INFO,
|
|
.info = info,
|
|
};
|
|
assert(info->selection < QEMU_CLIPBOARD_SELECTION__COUNT);
|
|
|
|
notifier_list_notify(&clipboard_notifiers, ¬ify);
|
|
|
|
qemu_clipboard_info_unref(cbinfo[info->selection]);
|
|
cbinfo[info->selection] = qemu_clipboard_info_ref(info);
|
|
}
|
|
|
|
QemuClipboardInfo *qemu_clipboard_info(QemuClipboardSelection selection)
|
|
{
|
|
assert(selection < QEMU_CLIPBOARD_SELECTION__COUNT);
|
|
|
|
return cbinfo[selection];
|
|
}
|
|
|
|
QemuClipboardInfo *qemu_clipboard_info_new(QemuClipboardPeer *owner,
|
|
QemuClipboardSelection selection)
|
|
{
|
|
QemuClipboardInfo *info = g_new0(QemuClipboardInfo, 1);
|
|
|
|
info->owner = owner;
|
|
info->selection = selection;
|
|
info->refcount = 1;
|
|
|
|
return info;
|
|
}
|
|
|
|
QemuClipboardInfo *qemu_clipboard_info_ref(QemuClipboardInfo *info)
|
|
{
|
|
info->refcount++;
|
|
return info;
|
|
}
|
|
|
|
void qemu_clipboard_info_unref(QemuClipboardInfo *info)
|
|
{
|
|
uint32_t type;
|
|
|
|
if (!info) {
|
|
return;
|
|
}
|
|
|
|
info->refcount--;
|
|
if (info->refcount > 0) {
|
|
return;
|
|
}
|
|
|
|
for (type = 0; type < QEMU_CLIPBOARD_TYPE__COUNT; type++) {
|
|
g_free(info->types[type].data);
|
|
}
|
|
g_free(info);
|
|
}
|
|
|
|
void qemu_clipboard_request(QemuClipboardInfo *info,
|
|
QemuClipboardType type)
|
|
{
|
|
if (info->types[type].data ||
|
|
info->types[type].requested ||
|
|
!info->types[type].available ||
|
|
!info->owner)
|
|
return;
|
|
|
|
info->types[type].requested = true;
|
|
info->owner->request(info, type);
|
|
}
|
|
|
|
void qemu_clipboard_reset_serial(void)
|
|
{
|
|
QemuClipboardNotify notify = { .type = QEMU_CLIPBOARD_RESET_SERIAL };
|
|
|
|
notifier_list_notify(&clipboard_notifiers, ¬ify);
|
|
}
|
|
|
|
void qemu_clipboard_set_data(QemuClipboardPeer *peer,
|
|
QemuClipboardInfo *info,
|
|
QemuClipboardType type,
|
|
uint32_t size,
|
|
const void *data,
|
|
bool update)
|
|
{
|
|
if (!info ||
|
|
info->owner != peer) {
|
|
return;
|
|
}
|
|
|
|
g_free(info->types[type].data);
|
|
info->types[type].data = g_memdup(data, size);
|
|
info->types[type].size = size;
|
|
info->types[type].available = true;
|
|
|
|
if (update) {
|
|
qemu_clipboard_update(info);
|
|
}
|
|
}
|