UI: Add release candidate checking to info dialog

Allows the ability to specify release candidate versions in the
whatsnew.json in order to allow startup information dialogs to be
displayed to the user which are specific to release candidates.

UI/window-basic-main.cpp

@@ -1738,13 +1738,21 @@ void OBSBasic::ReceivedIntroJson(const QString &text)
 		const std::string &version = item["version"].string_value();
 		const std::string &url = item["url"].string_value();
 		int increment = item["increment"].int_value();
+		int rc = item["RC"].int_value();
 
 		int major = 0;
 		int minor = 0;
 
 		sscanf(version.c_str(), "%d.%d", &major, &minor);
+#if OBS_RELEASE_CANDIDATE > 0
+		if (major == OBS_RELEASE_CANDIDATE_MAJOR &&
+		    minor == OBS_RELEASE_CANDIDATE_MINOR &&
+		    rc == OBS_RELEASE_CANDIDATE) {
+#else
 		if (major == LIBOBS_API_MAJOR_VER &&
-		    minor == LIBOBS_API_MINOR_VER) {
+		    minor == LIBOBS_API_MINOR_VER &&
+		    rc == 0) {
+#endif
 			info_url = url;
 			info_increment = increment;
 		}
@@ -1755,12 +1763,21 @@ void OBSBasic::ReceivedIntroJson(const QString &text)
 		return;
 	}
 
+#if OBS_RELEASE_CANDIDATE > 0
+	uint32_t lastVersion = config_get_int(App()->GlobalConfig(), "General",
+			"LastRCVersion");
+#else
 	uint32_t lastVersion = config_get_int(App()->GlobalConfig(), "General",
 			"LastVersion");
+#endif
 
 	int current_version_increment = -1;
 
+#if OBS_RELEASE_CANDIDATE > 0
+	if (lastVersion < OBS_RELEASE_CANDIDATE_VER) {
+#else
 	if (lastVersion < LIBOBS_API_VER) {
+#endif
 		config_set_int(App()->GlobalConfig(), "General",
 				"InfoIncrement", -1);
 	} else {
@@ -2097,6 +2114,10 @@ OBSBasic::~OBSBasic()
 
 	config_set_int(App()->GlobalConfig(), "General", "LastVersion",
 			LIBOBS_API_VER);
+#if OBS_RELEASE_CANDIDATE > 0
+	config_set_int(App()->GlobalConfig(), "General", "LastRCVersion",
+			OBS_RELEASE_CANDIDATE_VER);
+#endif
 
 	bool alwaysOnTop = IsAlwaysOnTop(this);