diff --git a/doc/classes/DisplayServer.xml b/doc/classes/DisplayServer.xml
index 6d8eaeda19c..7cd1e3b9171 100644
--- a/doc/classes/DisplayServer.xml
+++ b/doc/classes/DisplayServer.xml
@@ -1836,7 +1836,7 @@
Starts a drag operation on the window with the given [param window_id], using the current mouse position. Call this method when handling a mouse button being pressed to simulate a pressed event on the window's title bar. Using this method allows the window to participate in space switching, tiling, and other system features.
- [b]Note:[/b] This method is implemented only on macOS.
+ [b]Note:[/b] This method is implemented on Linux(X11/Wayland), macOS, and Windows.
diff --git a/platform/linuxbsd/wayland/display_server_wayland.cpp b/platform/linuxbsd/wayland/display_server_wayland.cpp
index e321e4d4b94..bae1cfd444e 100644
--- a/platform/linuxbsd/wayland/display_server_wayland.cpp
+++ b/platform/linuxbsd/wayland/display_server_wayland.cpp
@@ -986,6 +986,12 @@ DisplayServer::VSyncMode DisplayServerWayland::window_get_vsync_mode(DisplayServ
return DisplayServer::VSYNC_ENABLED;
}
+void DisplayServerWayland::window_start_drag(WindowID p_window) {
+ MutexLock mutex_lock(wayland_thread.mutex);
+
+ wayland_thread.window_start_drag(p_window);
+}
+
void DisplayServerWayland::cursor_set_shape(CursorShape p_shape) {
ERR_FAIL_INDEX(p_shape, CURSOR_MAX);
diff --git a/platform/linuxbsd/wayland/display_server_wayland.h b/platform/linuxbsd/wayland/display_server_wayland.h
index d6f51b4a7e9..5046097d7ce 100644
--- a/platform/linuxbsd/wayland/display_server_wayland.h
+++ b/platform/linuxbsd/wayland/display_server_wayland.h
@@ -272,6 +272,8 @@ public:
virtual void window_set_vsync_mode(DisplayServer::VSyncMode p_vsync_mode, WindowID p_window_id = MAIN_WINDOW_ID) override;
virtual DisplayServer::VSyncMode window_get_vsync_mode(WindowID p_window_id) const override;
+ virtual void window_start_drag(WindowID p_window = MAIN_WINDOW_ID) override;
+
virtual void cursor_set_shape(CursorShape p_shape) override;
virtual CursorShape cursor_get_shape() const override;
virtual void cursor_set_custom_image(const Ref &p_cursor, CursorShape p_shape, const Vector2 &p_hotspot) override;
diff --git a/platform/linuxbsd/wayland/wayland_thread.cpp b/platform/linuxbsd/wayland/wayland_thread.cpp
index 1130472e947..11a8c6adad8 100644
--- a/platform/linuxbsd/wayland/wayland_thread.cpp
+++ b/platform/linuxbsd/wayland/wayland_thread.cpp
@@ -3338,6 +3338,22 @@ void WaylandThread::beep() const {
}
}
+void WaylandThread::window_start_drag(DisplayServer::WindowID p_window_id) {
+ // TODO: Use window IDs for multiwindow support.
+ WindowState &ws = main_window;
+ SeatState *ss = wl_seat_get_seat_state(wl_seat_current);
+
+ if (ss && ws.xdg_toplevel) {
+ xdg_toplevel_move(ws.xdg_toplevel, ss->wl_seat, ss->pointer_data.button_serial);
+ }
+
+#ifdef LIBDECOR_ENABLED
+ if (ws.libdecor_frame) {
+ libdecor_frame_move(ws.libdecor_frame, ss->wl_seat, ss->pointer_data.button_serial);
+ }
+#endif
+}
+
void WaylandThread::window_set_max_size(DisplayServer::WindowID p_window_id, const Size2i &p_size) {
// TODO: Use window IDs for multiwindow support.
WindowState &ws = main_window;
diff --git a/platform/linuxbsd/wayland/wayland_thread.h b/platform/linuxbsd/wayland/wayland_thread.h
index 8f1605b8202..1996e0e359d 100644
--- a/platform/linuxbsd/wayland/wayland_thread.h
+++ b/platform/linuxbsd/wayland/wayland_thread.h
@@ -971,6 +971,8 @@ public:
// Optional - requires xdg_activation_v1
void window_request_attention(DisplayServer::WindowID p_window_id);
+ void window_start_drag(DisplayServer::WindowID p_window_id);
+
// Optional - require idle_inhibit_unstable_v1
void window_set_idle_inhibition(DisplayServer::WindowID p_window_id, bool p_enable);
bool window_get_idle_inhibition(DisplayServer::WindowID p_window_id) const;
diff --git a/platform/linuxbsd/x11/display_server_x11.cpp b/platform/linuxbsd/x11/display_server_x11.cpp
index be66ea30ae3..f8716c6f34c 100644
--- a/platform/linuxbsd/x11/display_server_x11.cpp
+++ b/platform/linuxbsd/x11/display_server_x11.cpp
@@ -69,6 +69,8 @@
#define _NET_WM_STATE_REMOVE 0L // remove/unset property
#define _NET_WM_STATE_ADD 1L // add/set property
+#define _NET_WM_MOVERESIZE_MOVE 8L
+
// 2.2 is the first release with multitouch
#define XINPUT_CLIENT_VERSION_MAJOR 2
#define XINPUT_CLIENT_VERSION_MINOR 2
@@ -5422,6 +5424,40 @@ DisplayServer::VSyncMode DisplayServerX11::window_get_vsync_mode(WindowID p_wind
return DisplayServer::VSYNC_ENABLED;
}
+void DisplayServerX11::window_start_drag(WindowID p_window) {
+ _THREAD_SAFE_METHOD_
+
+ ERR_FAIL_COND(!windows.has(p_window));
+ WindowData &wd = windows[p_window];
+
+ XClientMessageEvent m;
+ memset(&m, 0, sizeof(m));
+
+ XUngrabPointer(x11_display, CurrentTime);
+
+ Window root_return, child_return;
+ int root_x, root_y, win_x, win_y;
+ unsigned int mask_return;
+
+ Bool xquerypointer_result = XQueryPointer(x11_display, wd.x11_window, &root_return, &child_return, &root_x, &root_y, &win_x, &win_y, &mask_return);
+
+ m.type = ClientMessage;
+ m.window = wd.x11_window;
+ m.message_type = XInternAtom(x11_display, "_NET_WM_MOVERESIZE", True);
+ m.format = 32;
+ if (xquerypointer_result) {
+ m.data.l[0] = root_x;
+ m.data.l[1] = root_y;
+ m.data.l[3] = Button1;
+ }
+ m.data.l[2] = _NET_WM_MOVERESIZE_MOVE;
+ m.data.l[4] = 1; // Source - normal application.
+
+ XSendEvent(x11_display, DefaultRootWindow(x11_display), False, SubstructureRedirectMask | SubstructureNotifyMask, (XEvent *)&m);
+
+ XSync(x11_display, 0);
+}
+
Vector DisplayServerX11::get_rendering_drivers_func() {
Vector drivers;
diff --git a/platform/linuxbsd/x11/display_server_x11.h b/platform/linuxbsd/x11/display_server_x11.h
index 31e4d548b9a..cbb29182d66 100644
--- a/platform/linuxbsd/x11/display_server_x11.h
+++ b/platform/linuxbsd/x11/display_server_x11.h
@@ -512,6 +512,8 @@ public:
virtual void window_set_vsync_mode(DisplayServer::VSyncMode p_vsync_mode, WindowID p_window = MAIN_WINDOW_ID) override;
virtual DisplayServer::VSyncMode window_get_vsync_mode(WindowID p_vsync_mode) const override;
+ virtual void window_start_drag(WindowID p_window = MAIN_WINDOW_ID) override;
+
virtual void cursor_set_shape(CursorShape p_shape) override;
virtual CursorShape cursor_get_shape() const override;
virtual void cursor_set_custom_image(const Ref &p_cursor, CursorShape p_shape, const Vector2 &p_hotspot) override;
diff --git a/platform/windows/display_server_windows.cpp b/platform/windows/display_server_windows.cpp
index 2fa0ad8effd..60b72cdbce0 100644
--- a/platform/windows/display_server_windows.cpp
+++ b/platform/windows/display_server_windows.cpp
@@ -3803,6 +3803,21 @@ DisplayServer::VSyncMode DisplayServerWindows::window_get_vsync_mode(WindowID p_
return DisplayServer::VSYNC_ENABLED;
}
+void DisplayServerWindows::window_start_drag(WindowID p_window) {
+ _THREAD_SAFE_METHOD_
+
+ ERR_FAIL_COND(!windows.has(p_window));
+ WindowData &wd = windows[p_window];
+
+ ReleaseCapture();
+
+ POINT coords;
+ GetCursorPos(&coords);
+ ScreenToClient(wd.hWnd, &coords);
+
+ SendMessage(wd.hWnd, WM_SYSCOMMAND, SC_MOVE | HTCAPTION, MAKELPARAM(coords.x, coords.y));
+}
+
void DisplayServerWindows::set_context(Context p_context) {
}
diff --git a/platform/windows/display_server_windows.h b/platform/windows/display_server_windows.h
index 2ee6bd2e730..579a23eb0e1 100644
--- a/platform/windows/display_server_windows.h
+++ b/platform/windows/display_server_windows.h
@@ -805,6 +805,8 @@ public:
virtual void window_set_vsync_mode(DisplayServer::VSyncMode p_vsync_mode, WindowID p_window = MAIN_WINDOW_ID) override;
virtual DisplayServer::VSyncMode window_get_vsync_mode(WindowID p_vsync_mode) const override;
+ virtual void window_start_drag(WindowID p_window = MAIN_WINDOW_ID) override;
+
virtual void cursor_set_shape(CursorShape p_shape) override;
virtual CursorShape cursor_get_shape() const override;
virtual void cursor_set_custom_image(const Ref &p_cursor, CursorShape p_shape = CURSOR_ARROW, const Vector2 &p_hotspot = Vector2()) override;