enhancement(LorieView.java): improve input handling

app/src/main/cpp/lorie/activity.c

@@ -26,7 +26,7 @@ extern volatile int conn_fd; // The only variable from shared with X server code
 
 static struct {
     jclass self;
-    jmethodID getInstance, clientConnectedStateChanged;
+    jmethodID getInstance, clientConnectedStateChanged, resetIme;
 } MainActivity = {0};
 
 static struct {
@@ -115,6 +115,7 @@ static void nativeInit(JNIEnv *env, jobject thiz) {
         MainActivity.self = FindClassOrDie(env,  "com/termux/x11/MainActivity");
         MainActivity.getInstance = FindMethodOrDie(env, MainActivity.self, "getInstance", "()Lcom/termux/x11/MainActivity;", JNI_TRUE);
         MainActivity.clientConnectedStateChanged = FindMethodOrDie(env, MainActivity.self, "clientConnectedStateChanged", "()V", JNI_FALSE);
+        MainActivity.resetIme = FindMethodOrDie(env, (*env)->GetObjectClass(env, thiz), "resetIme", "()V", JNI_FALSE);
     }
 
     (*env)->GetJavaVM(env, &vm);
@@ -205,6 +206,9 @@ static int xcallback(int fd, int events, __unused void* data) {
 #endif
                     LorieBuffer_release(buffer);
                 }
+                case EVENT_WINDOW_FOCUS_CHANGED: {
+                    (*env)->CallVoidMethod(env, thiz, MainActivity.resetIme);
+                }
             }
         }
 
@@ -290,6 +294,8 @@ static void sendWindowChange(__unused JNIEnv* env, __unused jobject cls, jint wi
 
 static void sendMouseEvent(__unused JNIEnv* env, __unused jobject cls, jfloat x, jfloat y, jint which_button, jboolean button_down, jboolean relative) {
     if (conn_fd != -1) {
+        if (which_button > 0)
+            (*env)->CallVoidMethod(env, globalThiz, MainActivity.resetIme);
         lorieEvent e = { .mouse = { .t = EVENT_MOUSE, .x = x, .y = y, .detail = which_button, .down = button_down, .relative = relative } };
         write(conn_fd, &e, sizeof(e));
     }
@@ -306,6 +312,7 @@ static void sendStylusEvent(__unused JNIEnv *env, __unused jobject thiz, jfloat
                             jint pressure, jint tilt_x, jint tilt_y,
                             jint orientation, jint buttons, jboolean eraser, jboolean mouse) {
     if (conn_fd != -1) {
+        (*env)->CallVoidMethod(env, globalThiz, MainActivity.resetIme);
         lorieEvent e = { .stylus = { .t = EVENT_STYLUS, .x = x, .y = y, .pressure = pressure, .tilt_x = tilt_x, .tilt_y = tilt_y, .orientation = orientation, .buttons = buttons, .eraser = eraser, .mouse = mouse } };
         write(conn_fd, &e, sizeof(e));
     }
@@ -358,7 +365,7 @@ static void sendTextEvent(JNIEnv *env, __unused jobject thiz, jbyteArray text) {
             p += len;
             if (p - (char*) str >= length)
                 break;
-            usleep(30000);
+            usleep(2500);
         }
 
         (*env)->ReleaseByteArrayElements(env, text, str, JNI_ABORT);
@@ -396,7 +403,7 @@ JNIEXPORT jint JNI_OnLoad(JavaVM *vm, void *reserved) {
             {"sendTouchEvent", "(IIII)V", (void *)&sendTouchEvent},
             {"sendStylusEvent", "(FFIIIIIZZ)V", (void *)&sendStylusEvent},
             {"requestStylusEnabled", "(Z)V", (void *)&requestStylusEnabled},
-            {"sendKeyEvent", "(IIZ)Z", (void *)&sendKeyEvent},
+            {"sendKeyEvent", "(IIZI)Z", (void *)&sendKeyEvent},
             {"sendTextEvent", "([B)V", (void *)&sendTextEvent},
             {"requestConnection", "()V", (void *)&requestConnection},
     };

app/src/main/cpp/lorie/cmdentrypoint.c

@@ -437,6 +437,13 @@ void lorieSendRootWindowBuffer(LorieBuffer* buffer) {
     }
 }
 
+void DDXNotifyFocusChanged(void) {
+    if (conn_fd != -1) {
+        lorieEvent e = { .type = EVENT_WINDOW_FOCUS_CHANGED };
+        write(conn_fd, &e, sizeof(e));
+    }
+}
+
 JNIEXPORT jobject JNICALL
 Java_com_termux_x11_CmdEntryPoint_getXConnection(JNIEnv *env, __unused jobject cls) {
     int client[2];

app/src/main/cpp/lorie/lorie.h

@@ -104,6 +104,7 @@ typedef enum {
     EVENT_CLIPBOARD_ANNOUNCE,
     EVENT_CLIPBOARD_REQUEST,
     EVENT_CLIPBOARD_SEND,
+    EVENT_WINDOW_FOCUS_CHANGED,
 } eventType;
 
 typedef union {

app/src/main/cpp/patches/xserver.patch

@@ -299,3 +299,23 @@ index f9b7b06d9..f4b2aeddc 100644
 
      /* display is initialized to "0" by main(). It is then set to the display
       * number if specified on the command line. */
++++ b/dix/enterleave.c
+@@ -1540,6 +1540,8 @@ DeviceFocusEvents(DeviceIntPtr dev, WindowPtr from, WindowPtr to, int mode)
+     }
+ }
+
++extern void DDXNotifyFocusChanged(void);
++
+ /**
+  * Figure out if focus events are necessary and send them to the
+  * appropriate windows.
+@@ -1550,6 +1552,9 @@ DeviceFocusEvents(DeviceIntPtr dev, WindowPtr from, WindowPtr to, int mode)
+ void
+ DoFocusEvents(DeviceIntPtr pDev, WindowPtr from, WindowPtr to, int mode)
+ {
++    if (from != to)
++        DDXNotifyFocusChanged();
++
+     if (!IsKeyboardDevice(pDev))
+         return;
+

app/src/main/java/com/termux/x11/EditText.java

@@ -0,0 +1,17 @@
+package com.termux.x11;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.view.inputmethod.EditorInfo;
+import android.view.inputmethod.InputConnection;
+
+public class EditText extends androidx.appcompat.widget.AppCompatEditText {
+    public EditText(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    @Override
+    public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
+        return new InputConnectionWrapper(super.onCreateInputConnection(outAttrs));
+    }
+}