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WindowServer: Add basic menu applet concept

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It's now possible to create a little applet window that sits inside the
system's menubar. This is done using the new CreateMenuApplet IPC call.

So far, it's possible to assign a backing store ID, and to invalidate
rects for repaint. There is no way to get the events from inside the
applet just yet.

This will allow us to move the CPU graph and audio thingy to separate
applet processes. :^)
This commit is contained in:
Andreas Kling 2019-12-05 19:36:01 +01:00
parent 2d18fc8052
commit 44d5388e78
8 changed files with 174 additions and 0 deletions
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51
Servers/WindowServer/WSClientConnection.cpp
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@ -1,6 +1,7 @@
#include <LibC/SharedBuffer.h>
#include <LibDraw/GraphicsBitmap.h>
#include <SharedBuffer.h>
#include <WindowServer/WSMenuApplet.h>
#include <WindowServer/WSClientConnection.h>
#include <WindowServer/WSClipboard.h>
#include <WindowServer/WSCompositor.h>
@ -628,3 +629,53 @@ void WSClientConnection::handle(const WindowServer::WM_SetWindowTaskbarRect& mes
auto& window = *(*it).value;
window.set_taskbar_rect(message.rect());
}
OwnPtr<WindowServer::CreateMenuAppletResponse> WSClientConnection::handle(const WindowServer::CreateMenuApplet& message)
{
auto applet = make<WSMenuApplet>(message.size());
auto applet_id = applet->applet_id();
WSWindowManager::the().menu_manager().add_applet(*applet);
m_menu_applets.set(applet_id, move(applet));
return make<WindowServer::CreateMenuAppletResponse>(applet_id);
}
OwnPtr<WindowServer::DestroyMenuAppletResponse> WSClientConnection::handle(const WindowServer::DestroyMenuApplet& message)
{
auto it = m_menu_applets.find(message.applet_id());
if (it == m_menu_applets.end()) {
did_misbehave("DestroyApplet: Invalid applet ID");
return nullptr;
}
WSWindowManager::the().menu_manager().remove_applet(*it->value);
m_menu_applets.remove(message.applet_id());
return make<WindowServer::DestroyMenuAppletResponse>();
}
OwnPtr<WindowServer::SetMenuAppletBackingStoreResponse> WSClientConnection::handle(const WindowServer::SetMenuAppletBackingStore& message)
{
auto it = m_menu_applets.find(message.applet_id());
if (it == m_menu_applets.end()) {
did_misbehave("SetAppletBackingStore: Invalid applet ID");
return nullptr;
}
auto shared_buffer = SharedBuffer::create_from_shared_buffer_id(message.shared_buffer_id());
ssize_t size_in_bytes = it->value->size().area() * sizeof(RGBA32);
if (size_in_bytes > shared_buffer->size()) {
did_misbehave("SetAppletBackingStore: Shared buffer is too small for applet size");
return nullptr;
}
auto bitmap = GraphicsBitmap::create_with_shared_buffer(GraphicsBitmap::Format::RGBA32, *shared_buffer, it->value->size());
it->value->set_bitmap(bitmap);
return make<WindowServer::SetMenuAppletBackingStoreResponse>();
}
OwnPtr<WindowServer::InvalidateMenuAppletRectResponse> WSClientConnection::handle(const WindowServer::InvalidateMenuAppletRect& message)
{
auto it = m_menu_applets.find(message.applet_id());
if (it == m_menu_applets.end()) {
did_misbehave("InvalidateAppletRect: Invalid applet ID");
return nullptr;
}
it->value->invalidate(message.rect());
return make<WindowServer::InvalidateMenuAppletRectResponse>();
}