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WindowServer: Broadcast screen rect changes to all clients.

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GUI clients can now obtain the screen rect via GDesktop::rect().
This commit is contained in:
Andreas Kling 2019-04-03 17:22:14 +02:00
parent c02c9880b6
commit 318db1e48e
7 changed files with 40 additions and 0 deletions
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5
Servers/WindowServer/WSAPITypes.h
View file

@ -91,6 +91,7 @@ struct WSAPI_ServerMessage {
DidSetWindowBackingStore,
DidSetWallpaper,
DidGetWallpaper,
ScreenRectChanged,
};
Type type { Invalid };
int window_id { -1 };
@ -101,7 +102,11 @@ struct WSAPI_ServerMessage {
union {
struct {
int server_pid;
WSAPI_Rect screen_rect;
} greeting;
struct {
WSAPI_Rect rect;
} screen;
struct {
WSAPI_Rect rect;
WSAPI_Rect old_rect;

10
Servers/WindowServer/WSClientConnection.cpp
View file

@ -7,6 +7,7 @@
#include <WindowServer/WSWindowManager.h>
#include <WindowServer/WSAPITypes.h>
#include <WindowServer/WSClipboard.h>
#include <WindowServer/WSScreen.h>
#include <SharedBuffer.h>
#include <sys/ioctl.h>
#include <unistd.h>
@ -47,6 +48,7 @@ WSClientConnection::WSClientConnection(int fd)
WSAPI_ServerMessage message;
message.type = WSAPI_ServerMessage::Type::Greeting;
message.greeting.server_pid = getpid();
message.greeting.screen_rect = WSScreen::the().rect();
post_message(message);
}
@ -83,6 +85,14 @@ void WSClientConnection::post_message(const WSAPI_ServerMessage& message)
ASSERT(nwritten == sizeof(message));
}
void WSClientConnection::notify_about_new_screen_rect(const Rect& rect)
{
WSAPI_ServerMessage message;
message.type = WSAPI_ServerMessage::Type::ScreenRectChanged;
message.screen.rect = rect;
post_message(message);
}
void WSClientConnection::on_message(const WSMessage& message)
{
if (message.is_client_request()) {

2
Servers/WindowServer/WSClientConnection.h
View file

@ -36,6 +36,8 @@ public:
template<typename Matching, typename Callback> void for_each_window_matching(Matching, Callback);
template<typename Callback> void for_each_window(Callback);
void notify_about_new_screen_rect(const Rect&);
private:
virtual void on_message(const WSMessage&) override;

4
Servers/WindowServer/WSWindowManager.cpp
View file

@ -349,6 +349,10 @@ void WSWindowManager::set_resolution(int width, int height)
m_buffers_are_flipped = false;
invalidate();
compose();
WSClientConnection::for_each_client([&] (WSClientConnection& client) {
client.notify_about_new_screen_rect(m_screen_rect);
});
}
template<typename Callback>