wayland/screencopy: add screencopy

src/wayland/buffer/shm.hpp

@@ -0,0 +1,63 @@
+#pragma once
+
+#include <memory>
+
+#include <private/qwaylandshmbackingstore_p.h>
+#include <qquickwindow.h>
+#include <qsgtexture.h>
+#include <qsize.h>
+#include <qtclasshelpermacros.h>
+#include <wayland-client-protocol.h>
+
+#include "manager.hpp"
+#include "qsg.hpp"
+
+namespace qs::wayland::buffer::shm {
+
+Q_DECLARE_LOGGING_CATEGORY(logShm);
+
+class WlShmBuffer: public WlBuffer {
+public:
+	~WlShmBuffer() override;
+	Q_DISABLE_COPY_MOVE(WlShmBuffer);
+
+	[[nodiscard]] wl_buffer* buffer() const override { return this->shmBuffer->buffer(); }
+	[[nodiscard]] QSize size() const override { return this->shmBuffer->size(); }
+	[[nodiscard]] bool isCompatible(const WlBufferRequest& request) const override;
+	[[nodiscard]] WlBufferQSGTexture* createQsgTexture(QQuickWindow* window) const override;
+
+private:
+	WlShmBuffer(QtWaylandClient::QWaylandShmBuffer* shmBuffer, uint32_t format)
+	    : shmBuffer(shmBuffer)
+	    , format(format) {}
+
+	std::shared_ptr<QtWaylandClient::QWaylandShmBuffer> shmBuffer;
+	uint32_t format;
+
+	friend class WlShmBufferQSGTexture;
+	friend class ShmbufManager;
+	friend QDebug& operator<<(QDebug& debug, const WlShmBuffer* buffer);
+};
+
+QDebug& operator<<(QDebug& debug, const WlShmBuffer* buffer);
+
+class WlShmBufferQSGTexture: public WlBufferQSGTexture {
+public:
+	[[nodiscard]] QSGTexture* texture() const override { return this->qsgTexture.get(); }
+	void sync(const WlBuffer* buffer, QQuickWindow* window) override;
+
+private:
+	WlShmBufferQSGTexture() = default;
+
+	std::shared_ptr<QtWaylandClient::QWaylandShmBuffer> shmBuffer;
+	std::unique_ptr<QSGTexture> qsgTexture;
+
+	friend class WlShmBuffer;
+};
+
+class ShmbufManager {
+public:
+	[[nodiscard]] static WlBuffer* createShmbuf(const WlBufferRequest& request);
+};
+
+} // namespace qs::wayland::buffer::shm