int get_window_desktop(Window win)
{
int desktop = get_property32(win, server.atom._NET_WM_DESKTOP, XA_CARDINAL);
if (desktop == ALL_DESKTOPS)
return desktop;
if (!server.viewports)
return CLAMP(desktop, 0, server.num_desktops - 1);
int x, y, w, h;
get_window_coordinates(win, &x, &y, &w, &h);
desktop = get_current_desktop();
// Window coordinates are relative to the current viewport, make them absolute
x += server.viewports[desktop].x;
y += server.viewports[desktop].y;
if (x < 0 || y < 0) {
int num_results;
long *x_screen_size =
server_get_property(server.root_win, server.atom._NET_DESKTOP_GEOMETRY, XA_CARDINAL, &num_results);
if (!x_screen_size)
return 0;
int x_screen_width = x_screen_size[0];
int x_screen_height = x_screen_size[1];
XFree(x_screen_size);
// Wrap
if (x < 0)
x += x_screen_width;
if (y < 0)
y += x_screen_height;
}
int best_match = -1;
int match_right = 0;
int match_bottom = 0;
// There is an ambiguity when a window is right on the edge between viewports.
// In that case, prefer the viewports which is on the right and bottom of the window's top-left corner.
for (int i = 0; i < server.num_desktops; i++) {
if (x >= server.viewports[i].x && x <= (server.viewports[i].x + server.viewports[i].width) &&
y >= server.viewports[i].y && y <= (server.viewports[i].y + server.viewports[i].height)) {
int current_right = x < (server.viewports[i].x + server.viewports[i].width);
int current_bottom = y < (server.viewports[i].y + server.viewports[i].height);
if (best_match < 0 || (!match_right && current_right) || (!match_bottom && current_bottom)) {
best_match = i;
}
}
}
if (best_match < 0)
best_match = 0;
// fprintf(stderr, "window %lx %s : viewport %d, (%d, %d)\n", win, get_task(win) ? get_task(win)->title : "??",
// best_match+1, x, y);
return best_match;
}
void server_get_number_of_desktops()
{
if (server.viewports) {
free(server.viewports);
server.viewports = NULL;
}
server.num_desktops = get_property32(server.root_win, server.atom._NET_NUMBER_OF_DESKTOPS, XA_CARDINAL);
if (server.num_desktops > 1)
return;
int num_results;
long *work_area_size = server_get_property(server.root_win, server.atom._NET_WORKAREA, XA_CARDINAL, &num_results);
if (!work_area_size)
return;
int work_area_width = work_area_size[0] + work_area_size[2];
int work_area_height = work_area_size[1] + work_area_size[3];
XFree(work_area_size);
long *x_screen_size =
server_get_property(server.root_win, server.atom._NET_DESKTOP_GEOMETRY, XA_CARDINAL, &num_results);
if (!x_screen_size)
return;
int x_screen_width = x_screen_size[0];
int x_screen_height = x_screen_size[1];
XFree(x_screen_size);
int num_viewports = MAX(x_screen_width / work_area_width, 1) * MAX(x_screen_height / work_area_height, 1);
if (num_viewports <= 1) {
server.num_desktops = 1;
return;
}
server.viewports = calloc(num_viewports, sizeof(Viewport));
int k = 0;
for (int i = 0; i < MAX(x_screen_height / work_area_height, 1); i++) {
for (int j = 0; j < MAX(x_screen_width / work_area_width, 1); j++) {
server.viewports[k].x = j * work_area_width;
server.viewports[k].y = i * work_area_height;
server.viewports[k].width = work_area_width;
server.viewports[k].height = work_area_height;
k++;
}
}
server.num_desktops = num_viewports;
}
int get_current_desktop()
{
if (!server.viewports) {
return MAX(0,
MIN(server.num_desktops - 1,
get_property32(server.root_win, server.atom._NET_CURRENT_DESKTOP, XA_CARDINAL)));
}
int num_results;
long *work_area_size = server_get_property(server.root_win, server.atom._NET_WORKAREA, XA_CARDINAL, &num_results);
if (!work_area_size)
return 0;
int work_area_width = work_area_size[0] + work_area_size[2];
int work_area_height = work_area_size[1] + work_area_size[3];
XFree(work_area_size);
if (work_area_width <= 0 || work_area_height <= 0)
return 0;
long *viewport = server_get_property(server.root_win, server.atom._NET_DESKTOP_VIEWPORT, XA_CARDINAL, &num_results);
if (!viewport)
return 0;
int viewport_x = viewport[0];
int viewport_y = viewport[1];
XFree(viewport);
long *x_screen_size =
server_get_property(server.root_win, server.atom._NET_DESKTOP_GEOMETRY, XA_CARDINAL, &num_results);
if (!x_screen_size)
return 0;
int x_screen_width = x_screen_size[0];
XFree(x_screen_size);
int ncols = x_screen_width / work_area_width;
// fprintf(stderr, "\n");
// fprintf(stderr, "Work area size: %d x %d\n", work_area_width, work_area_height);
// fprintf(stderr, "Viewport pos: %d x %d\n", viewport_x, viewport_y);
// fprintf(stderr, "Viewport i: %d\n", (viewport_y / work_area_height) * ncols + viewport_x / work_area_width);
int result = (viewport_y / work_area_height) * ncols + viewport_x / work_area_width;
return MAX(0, MIN(server.num_desktops - 1, result));
}
gboolean window_is_active(Window win)
{
return (win == get_property32(server.root_win, server.atom._NET_ACTIVE_WINDOW, XA_WINDOW));
}
Window get_active_window()
{
return get_property32(server.root_win, server.atom._NET_ACTIVE_WINDOW, XA_WINDOW);
}
int server_get_current_desktop ()
{
return get_property32(server.root_win, server.atom._NET_CURRENT_DESKTOP, XA_CARDINAL);
}
int server_get_number_of_desktop ()
{
return get_property32(server.root_win, server.atom._NET_NUMBER_OF_DESKTOPS, XA_CARDINAL);
}
int window_get_desktop (Window win)
{
return get_property32(win, server.atom._NET_WM_DESKTOP, XA_CARDINAL);
}
