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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <Clipboard/ClipboardClientEndpoint.h>
#include <Clipboard/ClipboardServerEndpoint.h>
#include <LibGUI/Clipboard.h>
#include <LibGfx/Bitmap.h>
#include <LibIPC/ConnectionToServer.h>
namespace GUI {
class ConnectionToClipboardServer final
: public IPC::ConnectionToServer<ClipboardClientEndpoint, ClipboardServerEndpoint>
, public ClipboardClientEndpoint {
IPC_CLIENT_CONNECTION(ConnectionToClipboardServer, "/tmp/portal/clipboard"sv)
private:
ConnectionToClipboardServer(NonnullOwnPtr<Core::Stream::LocalSocket> socket)
: IPC::ConnectionToServer<ClipboardClientEndpoint, ClipboardServerEndpoint>(*this, move(socket))
{
}
virtual void clipboard_data_changed(String const& mime_type) override
{
Clipboard::the().clipboard_data_changed({}, mime_type);
}
};
static RefPtr<ConnectionToClipboardServer> s_connection;
static ConnectionToClipboardServer& connection()
{
return *s_connection;
}
void Clipboard::initialize(Badge<Application>)
{
s_connection = ConnectionToClipboardServer::try_create().release_value_but_fixme_should_propagate_errors();
}
Clipboard& Clipboard::the()
{
static bool s_destructed = false;
static ScopeGuard destructed_guard([] {
s_destructed = true;
});
VERIFY(!s_destructed); // Catch use-after-free
static Clipboard s_the;
return s_the;
}
Clipboard::DataAndType Clipboard::fetch_data_and_type() const
{
auto response = connection().get_clipboard_data();
if (!response.data().is_valid())
return {};
auto data = ByteBuffer::copy(response.data().data<void>(), response.data().size());
if (data.is_error())
return {};
auto type = response.mime_type();
auto metadata = response.metadata().entries();
return { data.release_value(), type, metadata };
}
RefPtr<Gfx::Bitmap> Clipboard::DataAndType::as_bitmap() const
{
if (mime_type != "image/x-serenityos")
return nullptr;
auto width = metadata.get("width").value_or("0").to_uint();
if (!width.has_value() || width.value() == 0)
return nullptr;
auto height = metadata.get("height").value_or("0").to_uint();
if (!height.has_value() || height.value() == 0)
return nullptr;
auto scale = metadata.get("scale").value_or("0").to_uint();
if (!scale.has_value() || scale.value() == 0)
return nullptr;
auto pitch = metadata.get("pitch").value_or("0").to_uint();
if (!pitch.has_value() || pitch.value() == 0)
return nullptr;
auto format = metadata.get("format").value_or("0").to_uint();
if (!format.has_value() || format.value() == 0)
return nullptr;
if (!Gfx::is_valid_bitmap_format(format.value()))
return nullptr;
auto bitmap_format = (Gfx::BitmapFormat)format.value();
// We cannot handle indexed bitmaps, as the palette would be lost.
// Thankfully, everything that copies bitmaps also transforms them to RGB beforehand.
if (Gfx::determine_storage_format(bitmap_format) == Gfx::StorageFormat::Indexed8)
return nullptr;
// We won't actually write to the clipping_bitmap, so casting away the const is okay.
auto clipping_data = const_cast<u8*>(data.data());
auto clipping_bitmap_or_error = Gfx::Bitmap::try_create_wrapper(bitmap_format, { (int)width.value(), (int)height.value() }, scale.value(), pitch.value(), clipping_data);
if (clipping_bitmap_or_error.is_error())
return nullptr;
auto clipping_bitmap = clipping_bitmap_or_error.release_value_but_fixme_should_propagate_errors();
auto bitmap_or_error = Gfx::Bitmap::try_create(Gfx::BitmapFormat::BGRA8888, { (int)width.value(), (int)height.value() }, scale.value());
if (bitmap_or_error.is_error())
return nullptr;
auto bitmap = bitmap_or_error.release_value_but_fixme_should_propagate_errors();
for (int y = 0; y < clipping_bitmap->physical_height(); ++y) {
for (int x = 0; x < clipping_bitmap->physical_width(); ++x) {
auto pixel = clipping_bitmap->get_pixel(x, y);
bitmap->set_pixel(x, y, pixel);
}
}
return bitmap;
}
void Clipboard::set_data(ReadonlyBytes data, String const& type, HashMap<String, String> const& metadata)
{
auto buffer_or_error = Core::AnonymousBuffer::create_with_size(data.size());
if (buffer_or_error.is_error()) {
dbgln("GUI::Clipboard::set_data() failed to create a buffer");
return;
}
auto buffer = buffer_or_error.release_value();
if (!data.is_empty())
memcpy(buffer.data<void>(), data.data(), data.size());
connection().async_set_clipboard_data(move(buffer), type, metadata);
}
void Clipboard::set_bitmap(Gfx::Bitmap const& bitmap)
{
HashMap<String, String> metadata;
metadata.set("width", String::number(bitmap.width()));
metadata.set("height", String::number(bitmap.height()));
metadata.set("scale", String::number(bitmap.scale()));
metadata.set("format", String::number((int)bitmap.format()));
metadata.set("pitch", String::number(bitmap.pitch()));
set_data({ bitmap.scanline(0), bitmap.size_in_bytes() }, "image/x-serenityos", metadata);
}
void Clipboard::clear()
{
connection().async_set_clipboard_data({}, {}, {});
}
void Clipboard::clipboard_data_changed(Badge<ConnectionToClipboardServer>, String const& mime_type)
{
if (on_change)
on_change(mime_type);
for (auto* client : m_clients)
client->clipboard_content_did_change(mime_type);
}
Clipboard::ClipboardClient::ClipboardClient()
{
Clipboard::the().register_client({}, *this);
}
Clipboard::ClipboardClient::~ClipboardClient()
{
Clipboard::the().unregister_client({}, *this);
}
}
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