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ui: add clipboard infrastructure

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Add some infrastructure to manage the clipboard in qemu.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 20210519053940.1888907-1-kraxel@redhat.com
Message-Id: <20210519053940.1888907-3-kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2021-05-19 07:39:33 +02:00
parent 58d3f3ff8d
commit 660e8d0f0b
3 changed files with 155 additions and 0 deletions
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92
ui/clipboard.c Normal file
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#include "qemu/osdep.h"
#include "ui/clipboard.h"
static NotifierList clipboard_notifiers =
NOTIFIER_LIST_INITIALIZER(clipboard_notifiers);
void qemu_clipboard_peer_register(QemuClipboardPeer *peer)
{
notifier_list_add(&clipboard_notifiers, &peer->update);
}
void qemu_clipboard_peer_unregister(QemuClipboardPeer *peer)
{
notifier_remove(&peer->update);
}
void qemu_clipboard_update(QemuClipboardInfo *info)
{
notifier_list_notify(&clipboard_notifiers, info);
}
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_set_data(QemuClipboardPeer *peer,
QemuClipboardInfo *info,
QemuClipboardType type,
uint32_t size,
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);
}
}