diff options
| -rw-r--r-- | platform/linuxbsd/display_server_x11.cpp | 268 |
1 files changed, 257 insertions, 11 deletions
diff --git a/platform/linuxbsd/display_server_x11.cpp b/platform/linuxbsd/display_server_x11.cpp index dd296ec3b4..e1eca498ae 100644 --- a/platform/linuxbsd/display_server_x11.cpp +++ b/platform/linuxbsd/display_server_x11.cpp @@ -735,21 +735,267 @@ Rect2i DisplayServerX11::screen_get_usable_rect(int p_screen) const { p_screen = window_get_current_screen(); } - // Using Xinerama Extension - int event_base, error_base; - const Bool ext_okay = XineramaQueryExtension(x11_display, &event_base, &error_base); - if (!ext_okay) { - return Rect2i(0, 0, 0, 0); + int screen_count = get_screen_count(); + + // Check if screen is valid. + ERR_FAIL_INDEX_V(p_screen, screen_count, Rect2i(0, 0, 0, 0)); + + bool is_multiscreen = screen_count > 1; + + // Use full monitor size as fallback. + Rect2i rect = _screen_get_rect(p_screen); + + // There's generally only one screen reported by xlib even in multi-screen setup, + // in this case it's just one virtual screen composed of all physical monitors. + int x11_screen_count = ScreenCount(x11_display); + Window x11_window = RootWindow(x11_display, p_screen < x11_screen_count ? p_screen : 0); + + Atom type; + int format = 0; + unsigned long remaining = 0; + + // Find active desktop for the root window. + unsigned int desktop_index = 0; + Atom desktop_prop = XInternAtom(x11_display, "_NET_CURRENT_DESKTOP", True); + if (desktop_prop != None) { + unsigned long desktop_len = 0; + unsigned char *desktop_data = nullptr; + if (XGetWindowProperty(x11_display, x11_window, desktop_prop, 0, LONG_MAX, False, XA_CARDINAL, &type, &format, &desktop_len, &remaining, &desktop_data) == Success) { + if ((format == 32) && (desktop_len > 0) && desktop_data) { + desktop_index = (unsigned int)desktop_data[0]; + } + if (desktop_data) { + XFree(desktop_data); + } + } } - int count; - XineramaScreenInfo *xsi = XineramaQueryScreens(x11_display, &count); + bool use_simple_method = true; + + // First check for GTK work area, which is more accurate for multi-screen setup. + if (is_multiscreen) { + // Use already calculated work area when available. + Atom gtk_workareas_prop = XInternAtom(x11_display, "_GTK_WORKAREAS", False); + if (gtk_workareas_prop != None) { + char gtk_workarea_prop_name[32]; + snprintf(gtk_workarea_prop_name, 32, "_GTK_WORKAREAS_D%d", desktop_index); + Atom gtk_workarea_prop = XInternAtom(x11_display, gtk_workarea_prop_name, True); + if (gtk_workarea_prop != None) { + unsigned long workarea_len = 0; + unsigned char *workarea_data = nullptr; + if (XGetWindowProperty(x11_display, x11_window, gtk_workarea_prop, 0, LONG_MAX, False, XA_CARDINAL, &type, &format, &workarea_len, &remaining, &workarea_data) == Success) { + if ((format == 32) && (workarea_len % 4 == 0) && workarea_data) { + long *rect_data = (long *)workarea_data; + for (uint32_t data_offset = 0; data_offset < workarea_len; data_offset += 4) { + Rect2i workarea_rect; + workarea_rect.position.x = rect_data[data_offset]; + workarea_rect.position.y = rect_data[data_offset + 1]; + workarea_rect.size.x = rect_data[data_offset + 2]; + workarea_rect.size.y = rect_data[data_offset + 3]; + + // Intersect with actual monitor size to find the correct area, + // because areas are not in the same order as screens from Xinerama. + if (rect.grow(-1).intersects(workarea_rect)) { + rect = rect.intersection(workarea_rect); + XFree(workarea_data); + return rect; + } + } + } + } + if (workarea_data) { + XFree(workarea_data); + } + } + } - // Check if screen is valid - ERR_FAIL_INDEX_V(p_screen, count, Rect2i(0, 0, 0, 0)); + // Fallback to calculating work area by hand from struts. + Atom client_list_prop = XInternAtom(x11_display, "_NET_CLIENT_LIST", True); + if (client_list_prop != None) { + unsigned long clients_len = 0; + unsigned char *clients_data = nullptr; + if (XGetWindowProperty(x11_display, x11_window, client_list_prop, 0, LONG_MAX, False, XA_WINDOW, &type, &format, &clients_len, &remaining, &clients_data) == Success) { + if ((format == 32) && (clients_len > 0) && clients_data) { + Window *windows_data = (Window *)clients_data; + + Rect2i desktop_rect; + bool desktop_valid = false; + + // Get full desktop size. + { + Atom desktop_geometry_prop = XInternAtom(x11_display, "_NET_DESKTOP_GEOMETRY", True); + if (desktop_geometry_prop != None) { + unsigned long geom_len = 0; + unsigned char *geom_data = nullptr; + if (XGetWindowProperty(x11_display, x11_window, desktop_geometry_prop, 0, LONG_MAX, False, XA_CARDINAL, &type, &format, &geom_len, &remaining, &geom_data) == Success) { + if ((format == 32) && (geom_len >= 2) && geom_data) { + desktop_valid = true; + long *size_data = (long *)geom_data; + desktop_rect.size.x = size_data[0]; + desktop_rect.size.y = size_data[1]; + } + } + if (geom_data) { + XFree(geom_data); + } + } + } + + // Get full desktop position. + if (desktop_valid) { + Atom desktop_viewport_prop = XInternAtom(x11_display, "_NET_DESKTOP_VIEWPORT", True); + if (desktop_viewport_prop != None) { + unsigned long viewport_len = 0; + unsigned char *viewport_data = nullptr; + if (XGetWindowProperty(x11_display, x11_window, desktop_viewport_prop, 0, LONG_MAX, False, XA_CARDINAL, &type, &format, &viewport_len, &remaining, &viewport_data) == Success) { + if ((format == 32) && (viewport_len >= 2) && viewport_data) { + desktop_valid = true; + long *pos_data = (long *)viewport_data; + desktop_rect.position.x = pos_data[0]; + desktop_rect.position.y = pos_data[1]; + } + } + if (viewport_data) { + XFree(viewport_data); + } + } + } + + if (desktop_valid) { + use_simple_method = false; + + for (unsigned long win_index = 0; win_index < clients_len; ++win_index) { + // Remove strut size from desktop size to get a more accurate result. + bool strut_found = false; + unsigned long strut_len = 0; + unsigned char *strut_data = nullptr; + Atom strut_partial_prop = XInternAtom(x11_display, "_NET_WM_STRUT_PARTIAL", True); + if (strut_partial_prop != None) { + if (XGetWindowProperty(x11_display, windows_data[win_index], strut_partial_prop, 0, LONG_MAX, False, XA_CARDINAL, &type, &format, &strut_len, &remaining, &strut_data) == Success) { + strut_found = true; + } + } + // Fallback to older strut property. + if (!strut_found) { + Atom strut_prop = XInternAtom(x11_display, "_NET_WM_STRUT", True); + if (strut_prop != None) { + if (XGetWindowProperty(x11_display, windows_data[win_index], strut_prop, 0, LONG_MAX, False, XA_CARDINAL, &type, &format, &strut_len, &remaining, &strut_data) == Success) { + strut_found = true; + } + } + } + if (strut_found && (format == 32) && (strut_len >= 4) && strut_data) { + long *struts = (long *)strut_data; + + long left = struts[0]; + long right = struts[1]; + long top = struts[2]; + long bottom = struts[3]; + + long left_start_y, left_end_y, right_start_y, right_end_y; + long top_start_x, top_end_x, bottom_start_x, bottom_end_x; + + if (strut_len >= 12) { + left_start_y = struts[4]; + left_end_y = struts[5]; + right_start_y = struts[6]; + right_end_y = struts[7]; + top_start_x = struts[8]; + top_end_x = struts[9]; + bottom_start_x = struts[10]; + bottom_end_x = struts[11]; + } else { + left_start_y = 0; + left_end_y = desktop_rect.size.y; + right_start_y = 0; + right_end_y = desktop_rect.size.y; + top_start_x = 0; + top_end_x = desktop_rect.size.x; + bottom_start_x = 0; + bottom_end_x = desktop_rect.size.x; + } + + const Point2i &pos = desktop_rect.position; + const Size2i &size = desktop_rect.size; + + Rect2i left_rect(pos.x, pos.y + left_start_y, left, left_end_y - left_start_y); + if (left_rect.size.x > 0) { + Rect2i intersection = rect.intersection(left_rect); + if (!intersection.has_no_area() && intersection.size.x < rect.size.x) { + rect.position.x = left_rect.size.x; + rect.size.x = rect.size.x - intersection.size.x; + } + } + + Rect2i right_rect(pos.x + size.x - right, pos.y + right_start_y, right, right_end_y - right_start_y); + if (right_rect.size.x > 0) { + Rect2i intersection = rect.intersection(right_rect); + if (!intersection.has_no_area() && right_rect.size.x < rect.size.x) { + rect.size.x = intersection.position.x - rect.position.x; + } + } + + Rect2i top_rect(pos.x + top_start_x, pos.y, top_end_x - top_start_x, top); + if (top_rect.size.y > 0) { + Rect2i intersection = rect.intersection(top_rect); + if (!intersection.has_no_area() && intersection.size.y < rect.size.y) { + rect.position.y = top_rect.size.y; + rect.size.y = rect.size.y - intersection.size.y; + } + } + + Rect2i bottom_rect(pos.x + bottom_start_x, pos.y + size.y - bottom, bottom_end_x - bottom_start_x, bottom); + if (bottom_rect.size.y > 0) { + Rect2i intersection = rect.intersection(bottom_rect); + if (!intersection.has_no_area() && right_rect.size.y < rect.size.y) { + rect.size.y = intersection.position.y - rect.position.y; + } + } + } + if (strut_data) { + XFree(strut_data); + } + } + } + } + } + if (clients_data) { + XFree(clients_data); + } + } + } + + // Single screen or fallback for multi screen. + if (use_simple_method) { + // Get desktop available size from the global work area. + Atom workarea_prop = XInternAtom(x11_display, "_NET_WORKAREA", True); + if (workarea_prop != None) { + unsigned long workarea_len = 0; + unsigned char *workarea_data = nullptr; + if (XGetWindowProperty(x11_display, x11_window, workarea_prop, 0, LONG_MAX, False, XA_CARDINAL, &type, &format, &workarea_len, &remaining, &workarea_data) == Success) { + if ((format == 32) && (workarea_len >= ((desktop_index + 1) * 4)) && workarea_data) { + long *rect_data = (long *)workarea_data; + int data_offset = desktop_index * 4; + Rect2i workarea_rect; + workarea_rect.position.x = rect_data[data_offset]; + workarea_rect.position.y = rect_data[data_offset + 1]; + workarea_rect.size.x = rect_data[data_offset + 2]; + workarea_rect.size.y = rect_data[data_offset + 3]; + + // Intersect with actual monitor size to get a proper approximation in multi-screen setup. + if (!is_multiscreen) { + rect = workarea_rect; + } else if (rect.intersects(workarea_rect)) { + rect = rect.intersection(workarea_rect); + } + } + } + if (workarea_data) { + XFree(workarea_data); + } + } + } - Rect2i rect = Rect2i(xsi[p_screen].x_org, xsi[p_screen].y_org, xsi[p_screen].width, xsi[p_screen].height); - XFree(xsi); return rect; } |