160 lines
3.9 KiB
C
160 lines
3.9 KiB
C
#include "qemu/osdep.h"
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#include "ui/clipboard.h"
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static NotifierList clipboard_notifiers =
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NOTIFIER_LIST_INITIALIZER(clipboard_notifiers);
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static QemuClipboardInfo *cbinfo[QEMU_CLIPBOARD_SELECTION__COUNT];
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void qemu_clipboard_peer_register(QemuClipboardPeer *peer)
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{
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notifier_list_add(&clipboard_notifiers, &peer->notifier);
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}
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void qemu_clipboard_peer_unregister(QemuClipboardPeer *peer)
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{
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int i;
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for (i = 0; i < QEMU_CLIPBOARD_SELECTION__COUNT; i++) {
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qemu_clipboard_peer_release(peer, i);
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}
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notifier_remove(&peer->notifier);
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}
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bool qemu_clipboard_peer_owns(QemuClipboardPeer *peer,
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QemuClipboardSelection selection)
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{
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QemuClipboardInfo *info = qemu_clipboard_info(selection);
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return info && info->owner == peer;
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}
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void qemu_clipboard_peer_release(QemuClipboardPeer *peer,
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QemuClipboardSelection selection)
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{
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g_autoptr(QemuClipboardInfo) info = NULL;
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if (qemu_clipboard_peer_owns(peer, selection)) {
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/* set empty clipboard info */
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info = qemu_clipboard_info_new(NULL, selection);
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qemu_clipboard_update(info);
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}
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}
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bool qemu_clipboard_check_serial(QemuClipboardInfo *info, bool client)
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{
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if (!info->has_serial ||
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!cbinfo[info->selection] ||
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!cbinfo[info->selection]->has_serial) {
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return true;
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}
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if (client) {
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return cbinfo[info->selection]->serial >= info->serial;
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} else {
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return cbinfo[info->selection]->serial > info->serial;
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}
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}
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void qemu_clipboard_update(QemuClipboardInfo *info)
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{
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QemuClipboardNotify notify = {
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.type = QEMU_CLIPBOARD_UPDATE_INFO,
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.info = info,
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};
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assert(info->selection < QEMU_CLIPBOARD_SELECTION__COUNT);
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notifier_list_notify(&clipboard_notifiers, ¬ify);
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if (cbinfo[info->selection] != info) {
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qemu_clipboard_info_unref(cbinfo[info->selection]);
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cbinfo[info->selection] = qemu_clipboard_info_ref(info);
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}
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}
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QemuClipboardInfo *qemu_clipboard_info(QemuClipboardSelection selection)
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{
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assert(selection < QEMU_CLIPBOARD_SELECTION__COUNT);
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return cbinfo[selection];
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}
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QemuClipboardInfo *qemu_clipboard_info_new(QemuClipboardPeer *owner,
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QemuClipboardSelection selection)
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{
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QemuClipboardInfo *info = g_new0(QemuClipboardInfo, 1);
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info->owner = owner;
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info->selection = selection;
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info->refcount = 1;
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return info;
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}
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QemuClipboardInfo *qemu_clipboard_info_ref(QemuClipboardInfo *info)
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{
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info->refcount++;
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return info;
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}
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void qemu_clipboard_info_unref(QemuClipboardInfo *info)
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{
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uint32_t type;
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if (!info) {
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return;
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}
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info->refcount--;
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if (info->refcount > 0) {
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return;
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}
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for (type = 0; type < QEMU_CLIPBOARD_TYPE__COUNT; type++) {
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g_free(info->types[type].data);
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}
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g_free(info);
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}
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void qemu_clipboard_request(QemuClipboardInfo *info,
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QemuClipboardType type)
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{
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if (info->types[type].data ||
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info->types[type].requested ||
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!info->types[type].available ||
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!info->owner)
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return;
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info->types[type].requested = true;
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info->owner->request(info, type);
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}
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void qemu_clipboard_reset_serial(void)
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{
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QemuClipboardNotify notify = { .type = QEMU_CLIPBOARD_RESET_SERIAL };
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notifier_list_notify(&clipboard_notifiers, ¬ify);
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}
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void qemu_clipboard_set_data(QemuClipboardPeer *peer,
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QemuClipboardInfo *info,
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QemuClipboardType type,
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uint32_t size,
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const void *data,
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bool update)
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{
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if (!info ||
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info->owner != peer) {
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return;
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}
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g_free(info->types[type].data);
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info->types[type].data = g_memdup(data, size);
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info->types[type].size = size;
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info->types[type].available = true;
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if (update) {
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qemu_clipboard_update(info);
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}
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}
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