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WindowServer+LibGUI: Add a server-side clipboard.

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On the client side, use GClipboard's data() and set_data(String) to access
the global clipboard. :^)
This commit is contained in:
Andreas Kling 2019-03-08 13:27:19 +01:00
parent eda0866992
commit 6820f9e14f
12 changed files with 250 additions and 2 deletions
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51
LibGUI/GClipboard.cpp Normal file
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#include <LibGUI/GClipboard.h>
#include <LibGUI/GEventLoop.h>
#include <WindowServer/WSAPITypes.h>
#include <LibC/SharedBuffer.h>
GClipboard& GClipboard::the()
{
static GClipboard* s_the;
if (!s_the)
s_the = new GClipboard;
return *s_the;
}
GClipboard::GClipboard()
{
}
String GClipboard::data() const
{
WSAPI_ClientMessage request;
request.type = WSAPI_ClientMessage::Type::GetClipboardContents;
auto response = GEventLoop::main().sync_request(request, WSAPI_ServerMessage::Type::DidGetClipboardContents);
if (response.clipboard.shared_buffer_id < 0)
return { };
auto shared_buffer = SharedBuffer::create_from_shared_buffer_id(response.clipboard.shared_buffer_id);
if (!shared_buffer) {
dbgprintf("GClipboard::data() failed to attach to the shared buffer\n");
return { };
}
if (response.clipboard.contents_size > shared_buffer->size()) {
dbgprintf("GClipboard::data() clipping contents size is greater than shared buffer size\n");
return { };
}
return String((const char*)shared_buffer->data(), response.clipboard.contents_size);
}
void GClipboard::set_data(const String& data)
{
WSAPI_ClientMessage request;
request.type = WSAPI_ClientMessage::Type::SetClipboardContents;
auto shared_buffer = SharedBuffer::create(GEventLoop::main().server_pid(), data.length() + 1);
if (!shared_buffer) {
dbgprintf("GClipboard::set_data() failed to create a shared buffer\n");
return;
}
memcpy(shared_buffer->data(), data.characters(), data.length() + 1);
request.clipboard.shared_buffer_id = shared_buffer->shared_buffer_id();
request.clipboard.contents_size = data.length();
auto response = GEventLoop::main().sync_request(request, WSAPI_ServerMessage::Type::DidSetClipboardContents);
ASSERT(response.clipboard.shared_buffer_id == shared_buffer->shared_buffer_id());
}