From 0a72437088b3e8387aa6ab77e20293bc2385788a Mon Sep 17 00:00:00 2001
From: Javier <dev.git@javispedro.com>
Date: Sun, 16 Feb 2020 22:18:38 +0100
Subject: update to sdk 29, migrate to androidx, new GUI

---
 app/src/main/cpp/native-lib.cpp | 50 ++++++++++++++++++++++++++++++++++++-----
 1 file changed, 45 insertions(+), 5 deletions(-)

(limited to 'app/src/main/cpp/native-lib.cpp')

diff --git a/app/src/main/cpp/native-lib.cpp b/app/src/main/cpp/native-lib.cpp
index 3a1811c..6216181 100644
--- a/app/src/main/cpp/native-lib.cpp
+++ b/app/src/main/cpp/native-lib.cpp
@@ -41,6 +41,7 @@ struct Data
     jobject cb_obj;
     jmethodID cb_ev_ptr;
     jmethodID cb_ev_key;
+    jmethodID cb_ev_client;
 
     std::atomic<bool> pendingPtrEvent;
     int ptrButtonMask, ptrX, ptrY;
@@ -48,6 +49,10 @@ struct Data
     std::atomic<bool> pendingKeyEvent;
     rfbKeySym key;
     bool keyState;
+
+    std::atomic<bool> pendingClientEvent;
+
+    unsigned int numClients;
 };
 
 static inline Data * getData(JNIEnv *env, jobject instance)
@@ -71,6 +76,16 @@ static inline Data * getData(rfbClientPtr client)
     return data;
 }
 
+static void listen_thread_client_gone(rfbClientPtr client)
+{
+    Data *data = getData(client);
+
+    data->numClients--;
+    data->pendingClientEvent = true;
+
+    eventfd_write(data->eventEventFd, 1);
+}
+
 static void listen_thread_main(Data *data, JavaVM *vm)
 {
     rfbScreenInfoPtr screen = data->screen;
@@ -104,11 +119,20 @@ static void listen_thread_main(Data *data, JavaVM *vm)
         else if (data->listenEventFd >= 0 && FD_ISSET(data->listenEventFd, &listen_fds))
             break;
 
-        rfbClientPtr cl = NULL;
-        if(client_fd >= 0)
-            cl = rfbNewClient(screen,client_fd);
-        if (cl && !cl->onHold )
-            rfbStartOnHoldClient(cl);
+        if(client_fd >= 0) {
+            rfbClientPtr cl = rfbNewClient(screen, client_fd);
+            if (cl) {
+                cl->clientGoneHook = listen_thread_client_gone;
+
+                data->numClients++;
+                data->pendingClientEvent = true;
+
+                eventfd_write(data->eventEventFd, 1);
+
+                if (!cl->onHold)
+                    rfbStartOnHoldClient(cl);
+            }
+        }
     }
 }
 
@@ -134,6 +158,11 @@ static void event_thread_main(Data *data, JavaVM *vm)
             env->CallVoidMethod(data->cb_obj, data->cb_ev_key, (jint)data->key, (jboolean)data->keyState);
             data->pendingKeyEvent = false;
         }
+
+        if (data->pendingClientEvent) {
+            env->CallVoidMethod(data->cb_obj, data->cb_ev_client);
+            data->pendingClientEvent = false;
+        }
     }
 
     vm->DetachCurrentThread();
@@ -150,6 +179,7 @@ static void ptr_event(int buttonMask, int x, int y, rfbClientPtr cl)
 
     eventfd_write(data->eventEventFd, 1);
 
+    // Still send the event to RFB, to do server-side cursor processing
     rfbDefaultPtrAddEvent(buttonMask, x, y, cl);
 }
 
@@ -199,10 +229,13 @@ Java_com_javispedro_vndroid_RFBServer_allocate(JNIEnv *env, jobject instance)
     assert(data->cb_ev_ptr);
     data->cb_ev_key = env->GetMethodID(cb_cls, "onKeyEvent", "(IZ)V");
     assert(data->cb_ev_key);
+    data->cb_ev_client = env->GetMethodID(cb_cls, "onClientEvent", "()V");
+    assert(data->cb_ev_client);
 
     data->screen = 0;
     data->listenEventFd = -1;
     data->eventEventFd = -1;
+    data->numClients = 0;
 
     env->SetLongField(instance, fid, reinterpret_cast<jlong>(data));
 
@@ -359,3 +392,10 @@ Java_com_javispedro_vndroid_RFBServer_put_1image(JNIEnv *env, jobject instance,
 
     return JNI_TRUE;
 }
+
+extern "C"
+JNIEXPORT jint JNICALL
+Java_com_javispedro_vndroid_RFBServer_get_1num_1clients(JNIEnv *env, jobject instance) {
+    Data *data = getData(env, instance);
+    return data->numClients;
+}
\ No newline at end of file
-- 
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