win-capture: Do not fall back to other windows for UWP windows

If capturing a UWP window, do not fall back to matching windows with the
same window class if the exact window is not found, as this will get any
other UWP window on the system (due to the fact that they all have the
same window class name).

plugins/win-capture/window-helpers.c

@@ -285,7 +285,8 @@ static int window_rating(HWND window,
 		enum window_priority priority,
 		const char *class,
 		const char *title,
-		const char *exe)
+		const char *exe,
+		bool uwp_window)
 {
 	struct dstr cur_class = {0};
 	struct dstr cur_title = {0};
@@ -307,12 +308,18 @@ static int window_rating(HWND window,
 	else
 		exe_val += 3;
 
-	if (dstr_cmpi(&cur_class, class) == 0)
-		total += class_val;
-	if (dstr_cmpi(&cur_title, title) == 0)
-		total += title_val;
-	if (dstr_cmpi(&cur_exe, exe) == 0)
-		total += exe_val;
+	if (uwp_window) {
+		if (dstr_cmpi(&cur_title, title) == 0 &&
+		    dstr_cmpi(&cur_exe, exe) == 0)
+			total += exe_val + title_val + class_val;
+	} else {
+		if (dstr_cmpi(&cur_class, class) == 0)
+			total += class_val;
+		if (dstr_cmpi(&cur_title, title) == 0)
+			total += title_val;
+		if (dstr_cmpi(&cur_exe, exe) == 0)
+			total += exe_val;
+	}
 
 	dstr_free(&cur_class);
 	dstr_free(&cur_title);
@@ -331,9 +338,11 @@ HWND find_window(enum window_search_mode mode,
 	HWND window      = first_window(mode, &parent);
 	HWND best_window = NULL;
 	int  best_rating = 0;
+	bool uwp_window  = strcmp(class, "Windows.UI.Core.CoreWindow") == 0;
 
 	while (window) {
-		int rating = window_rating(window, priority, class, title, exe);
+		int rating = window_rating(window, priority, class, title, exe,
+				uwp_window);
 		if (rating > best_rating) {
 			best_rating = rating;
 			best_window = window;