mirror of
https://github.com/AyuGram/AyuGramDesktop.git
synced 2026-08-06 20:03:12 +00:00
John Preston
91 lines
2.3 KiB
C++
91 lines
2.3 KiB
C++
/*
|
|
This file is part of Telegram Desktop,
|
|
the official desktop application for the Telegram messaging service.
|
|
|
|
For license and copyright information please follow this link:
|
|
https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
|
|
*/
|
|
#include "iv/editor/iv_editor_clipboard.h"
|
|
|
|
#include "base/random.h"
|
|
|
|
#include <QtCore/QMimeData>
|
|
#include <QtCore/QPointer>
|
|
|
|
namespace Iv::Editor {
|
|
namespace {
|
|
|
|
struct ClipboardStorage {
|
|
uint64 sessionId = base::RandomValue<uint64>();
|
|
uint64 serial = 0;
|
|
QPointer<QMimeData> mimeData;
|
|
std::optional<ClipboardData> data;
|
|
};
|
|
|
|
[[nodiscard]] ClipboardStorage &Storage() {
|
|
static auto storage = ClipboardStorage();
|
|
return storage;
|
|
}
|
|
|
|
[[nodiscard]] bool MarkerMatches(const QMimeData *mimeData) {
|
|
return mimeData
|
|
&& mimeData->hasFormat(ClipboardMimeType())
|
|
&& (mimeData->data(ClipboardMimeType()) == "1");
|
|
}
|
|
|
|
[[nodiscard]] bool OriginMatches(
|
|
const ClipboardOrigin &origin,
|
|
const ClipboardStorage &storage) {
|
|
return (origin.sessionId == storage.sessionId)
|
|
&& (origin.serial == storage.serial)
|
|
&& (origin.serial != 0);
|
|
}
|
|
|
|
[[nodiscard]] bool StoredDataMatches(
|
|
const ClipboardData &data,
|
|
const ClipboardStorage &storage) {
|
|
return std::visit([&](const auto &payload) {
|
|
return OriginMatches(payload.origin, storage);
|
|
}, data);
|
|
}
|
|
|
|
[[nodiscard]] ClipboardData StampClipboardData(ClipboardData data) {
|
|
auto &storage = Storage();
|
|
const auto serial = ++storage.serial;
|
|
return std::visit([&](auto payload) -> ClipboardData {
|
|
payload.origin.sessionId = storage.sessionId;
|
|
payload.origin.serial = serial;
|
|
return ClipboardData(std::move(payload));
|
|
}, std::move(data));
|
|
}
|
|
|
|
} // namespace
|
|
|
|
QString ClipboardMimeType() {
|
|
return u"application/x-td-iv-editor"_q;
|
|
}
|
|
|
|
std::unique_ptr<QMimeData> MimeDataFromClipboardData(ClipboardData data) {
|
|
auto &storage = Storage();
|
|
storage.data = StampClipboardData(std::move(data));
|
|
auto result = std::make_unique<QMimeData>();
|
|
result->setData(ClipboardMimeType(), "1");
|
|
storage.mimeData = result.get();
|
|
return result;
|
|
}
|
|
|
|
std::optional<ClipboardData> ClipboardDataFromMimeData(
|
|
const QMimeData *mimeData) {
|
|
const auto &storage = Storage();
|
|
if (!MarkerMatches(mimeData)
|
|
|| !storage.data
|
|
|| !storage.mimeData
|
|
|| (storage.mimeData.data() != mimeData)
|
|
|| !StoredDataMatches(*storage.data, storage)) {
|
|
return std::nullopt;
|
|
}
|
|
return storage.data;
|
|
}
|
|
|
|
} // namespace Iv::Editor
|