implement buttons

examples/send-presence/send-presence.c

@@ -34,6 +34,9 @@ static int prompt(char* line, size_t size)
 static void updateDiscordPresence()
 {
     if (SendPresence) {
+        DiscordPresenceButton btn2 = {"DuckDuckGo", "https://duckduckgo.com", NULL};
+        DiscordPresenceButton btn1 = {"Google", "https://google.com", &btn2};
+
         char buffer[256];
         DiscordRichPresence discordPresence;
         memset(&discordPresence, 0, sizeof(discordPresence));
@@ -48,10 +51,11 @@ static void updateDiscordPresence()
         discordPresence.partySize = 1;
         discordPresence.partyMax = 6;
         discordPresence.partyPrivacy = DISCORD_PARTY_PUBLIC;
-        discordPresence.matchSecret = "xyzzy";
-        discordPresence.joinSecret = "join";
-        discordPresence.spectateSecret = "look";
+        // discordPresence.matchSecret = "xyzzy";
+        // discordPresence.joinSecret = "join";
+        // discordPresence.spectateSecret = "look";
         discordPresence.instance = 0;
+        discordPresence.buttons = &btn1;
         Discord_UpdatePresence(&discordPresence);
     }
     else {

include/discord_rpc.h

@@ -23,6 +23,12 @@
 extern "C" {
 #endif
 
+typedef struct DiscordPresenceButton {
+    const char* label;
+    const char* url;
+    const struct DiscordPresenceButton* next;
+} DiscordPresenceButton;
+
 typedef struct DiscordRichPresence {
     const char* state;   /* max 128 bytes */
     const char* details; /* max 128 bytes */
@@ -40,6 +46,7 @@ typedef struct DiscordRichPresence {
     const char* joinSecret;     /* max 128 bytes */
     const char* spectateSecret; /* max 128 bytes */
     int8_t instance;
+    const DiscordPresenceButton* buttons;
 } DiscordRichPresence;
 
 typedef struct DiscordUser {

src/discord_register_linux.cpp

@@ -42,12 +42,12 @@ extern "C" DISCORD_EXPORT void Discord_Register(const char* applicationId, const
     }
 
     const char* desktopFileFormat = "[Desktop Entry]\n"
-                                   "Name=Game %s\n"
-                                   "Exec=%s %%u\n" // note: it really wants that %u in there
-                                   "Type=Application\n"
-                                   "NoDisplay=true\n"
-                                   "Categories=Discord;Games;\n"
-                                   "MimeType=x-scheme-handler/discord-%s;\n";
+                                    "Name=Game %s\n"
+                                    "Exec=%s %%u\n" // note: it really wants that %u in there
+                                    "Type=Application\n"
+                                    "NoDisplay=true\n"
+                                    "Categories=Discord;Games;\n"
+                                    "MimeType=x-scheme-handler/discord-%s;\n";
     char desktopFile[2048];
     int fileLen = snprintf(
       desktopFile, sizeof(desktopFile), desktopFileFormat, applicationId, command, applicationId);

src/serialization.cpp

@@ -160,6 +160,20 @@ size_t JsonWriteRichPresenceObj(char* dest,
 
                 writer.Key("instance");
                 writer.Bool(presence->instance != 0);
+
+                if (presence->buttons) {
+                    WriteArray buttons(writer, "buttons");
+
+                    const DiscordPresenceButton* current = presence->buttons;
+                    do {
+                        if (current->label && current->url) {
+                            WriteObject button(writer);
+
+                            WriteOptionalString(writer, "label", current->label);
+                            WriteOptionalString(writer, "url", current->url);
+                        }
+                    } while ((current = current->next) != NULL);
+                }
             }
         }
     }