Sets the policy for how the display should show IME.

app/data/bash-completion/scrcpy

@@ -23,6 +23,7 @@ _scrcpy() {
         -d --select-usb
         --disable-screensaver
         --display-id=
+        --display-ime-policy=
         --display-orientation=
         -e --select-tcpip
         -f --fullscreen
@@ -148,6 +149,10 @@ _scrcpy() {
             COMPREPLY=($(compgen -W '0 90 180 270 flip0 flip90 flip180 flip270' -- "$cur"))
             return
             ;;
+        --display-ime-policy)
+            COMPREPLY=($(compgen -W 'local fallback_display hide' -- "$cur"))
+            return
+            ;;
         --record-orientation)
             COMPREPLY=($(compgen -W '0 90 180 270' -- "$cur"))
             return

app/data/zsh-completion/_scrcpy

@@ -30,6 +30,7 @@ arguments=(
     {-d,--select-usb}'[Use USB device]'
     '--disable-screensaver[Disable screensaver while scrcpy is running]'
     '--display-id=[Specify the display id to mirror]'
+    '--display-ime-policy=[Sets the policy for how the display should show IME]'
     '--display-orientation=[Set the initial display orientation]:orientation values:(0 90 180 270 flip0 flip90 flip180 flip270)'
     {-e,--select-tcpip}'[Use TCP/IP device]'
     {-f,--fullscreen}'[Start in fullscreen]'

app/scrcpy.1

@@ -169,6 +169,16 @@ Possible values are 0, 90, 180, 270, flip0, flip90, flip180 and flip270. The num
 
 Default is 0.
 
+.TP
+.BI "\-\-display\-ime-policy " value
+Sets the policy for how the display should show IME.
+
+Possible values are "local", "fallback_display" and "hide".
+
+ - The "local" policy means that the IME should appear on the local display.
+ - The "fallback_display" policy means that the IME should appear on a fallback display. The fallback display is always DEFAULT DISPLAY.
+ - The "hide" policy means that the IME should be hidden.
+
 .TP
 .B \-e, \-\-select\-tcpip
 Use TCP/IP device (if there is exactly one, like adb -e).

app/src/cli.c

@@ -94,6 +94,7 @@ enum {
     OPT_CAMERA_FPS,
     OPT_CAMERA_HIGH_SPEED,
     OPT_DISPLAY_ORIENTATION,
+    OPT_DISPLAY_IME_POLICY,
     OPT_RECORD_ORIENTATION,
     OPT_ORIENTATION,
     OPT_KEYBOARD,
@@ -366,6 +367,20 @@ static const struct sc_option options[] = {
                 "    scrcpy --list-displays\n"
                 "Default is 0.",
     },
+    {
+        .longopt_id = OPT_DISPLAY_IME_POLICY,
+        .longopt = "display-ime-policy",
+        .argdesc = "value",
+        .text = "Sets the policy for how the display should show IME.\n"
+                "Possible values are \"local\", \"fallback_display\" and "
+                "\"hide\".\n"
+                "The \"local\" policy means that the IME should appear on the "
+                "local display.\n"
+                "The \"fallback_display\" policy means that the IME should "
+                "appear on a fallback display. The fallback display is always "
+                "DEFAULT DISPLAY.\n"
+                "The \"hide\" policy means that the IME should be hidden.\n",
+    },
     {
         .longopt_id = OPT_DISPLAY_ORIENTATION,
         .longopt = "display-orientation",
@@ -1615,6 +1630,24 @@ parse_audio_output_buffer(const char *s, sc_tick *tick) {
     return true;
 }
 
+static bool
+parse_display_ime_policy(const char *optarg, enum sc_display_ime_policy *policy) {
+    if (!strcmp(optarg, "local")) {
+        *policy = SC_DISPLAY_IME_POLICY_LOCAL;
+        return true;
+    }
+    if (!strcmp(optarg, "fallback_display")) {
+        *policy = SC_DISPLAY_IME_POLICY_FALLBACK_DISPLAY;
+        return true;
+    }
+    if (!strcmp(optarg, "hide")) {
+        *policy = SC_DISPLAY_IME_POLICY_HIDE;
+        return true;
+    }
+    LOGE("Unsupported display IME policy: %s (expected local, fallback_display, hide)", optarg);
+    return false;
+}
+
 static bool
 parse_orientation(const char *s, enum sc_orientation *orientation) {
     if (!strcmp(s, "0")) {
@@ -2723,6 +2756,11 @@ parse_args_with_getopt(struct scrcpy_cli_args *args, int argc, char *argv[],
             case OPT_NO_VD_SYSTEM_DECORATIONS:
                 opts->vd_system_decorations = false;
                 break;
+            case OPT_DISPLAY_IME_POLICY:
+                if (!parse_display_ime_policy(optarg, &opts->display_ime_policy)) {
+                    return false;
+                }
+                break;
             default:
                 // getopt prints the error message on stderr
                 return false;
@@ -2978,6 +3016,11 @@ parse_args_with_getopt(struct scrcpy_cli_args *args, int argc, char *argv[],
             return false;
         }
 
+        if (opts->display_ime_policy != SC_DISPLAY_IME_POLICY_UNDEFINDED) {
+            LOGE("--display-ime_policy is only available with --video-source=display");
+            return false;
+        }
+
         if (opts->camera_id && opts->camera_facing != SC_CAMERA_FACING_ANY) {
             LOGE("Cannot specify both --camera-id and --camera-facing");
             return false;
@@ -3014,9 +3057,17 @@ parse_args_with_getopt(struct scrcpy_cli_args *args, int argc, char *argv[],
         return false;
     }
 
-    if (opts->display_id != 0 && opts->new_display) {
-        LOGE("Cannot specify both --display-id and --new-display");
-        return false;
+    if (opts->display_id != 0) {
+        if (opts->new_display) {
+            LOGE("Cannot specify both --display-id and --new-display");
+            return false;
+        }
+    } else {
+        if (!opts->new_display
+             && opts->display_ime_policy != SC_DISPLAY_IME_POLICY_UNDEFINDED) {
+            LOGE("--display-ime-policy not supported if display_id == 0 and new_display == NULL");
+            return false;
+        }
     }
 
     if (opts->audio && opts->audio_source == SC_AUDIO_SOURCE_AUTO) {
@@ -3200,6 +3251,10 @@ parse_args_with_getopt(struct scrcpy_cli_args *args, int argc, char *argv[],
             LOGE("OTG mode: could not select display");
             return false;
         }
+        if (opts->display_ime_policy != SC_DISPLAY_IME_POLICY_UNDEFINDED) {
+            LOGE("OTG mode: could not set the policy for how the display should show IME.");
+            return false;
+        }
         if (v4l2) {
             LOGE("OTG mode: could not sink to V4L2 device");
             return false;

app/src/options.c

@@ -109,6 +109,7 @@ const struct scrcpy_options scrcpy_options_default = {
     .audio_dup = false,
     .new_display = NULL,
     .start_app = NULL,
+    .display_ime_policy = SC_DISPLAY_IME_POLICY_UNDEFINDED,
     .angle = NULL,
     .vd_destroy_content = true,
     .vd_system_decorations = true,

app/src/options.h

@@ -83,6 +83,13 @@ enum sc_orientation {         // v v v
     SC_ORIENTATION_FLIP_270,  // 1 1 1
 };
 
+enum sc_display_ime_policy {
+    SC_DISPLAY_IME_POLICY_UNDEFINDED = -1,
+    SC_DISPLAY_IME_POLICY_LOCAL,
+    SC_DISPLAY_IME_POLICY_FALLBACK_DISPLAY,
+    SC_DISPLAY_IME_POLICY_HIDE,
+};
+
 enum sc_orientation_lock {
     SC_ORIENTATION_UNLOCKED,
     SC_ORIENTATION_LOCKED_VALUE,   // lock to specified orientation
@@ -309,6 +316,7 @@ struct scrcpy_options {
     bool audio_dup;
     const char *new_display; // [<width>x<height>][/<dpi>] parsed by the server
     const char *start_app;
+    enum sc_display_ime_policy display_ime_policy;
     bool vd_destroy_content;
     bool vd_system_decorations;
 };

app/src/scrcpy.c

@@ -436,6 +436,7 @@ scrcpy(struct scrcpy_options *options) {
         .control = options->control,
         .display_id = options->display_id,
         .new_display = options->new_display,
+        .display_ime_policy = options->display_ime_policy,
         .video = options->video,
         .audio = options->audio,
         .audio_dup = options->audio_dup,

app/src/server.c

@@ -376,6 +376,10 @@ execute_server(struct sc_server *server,
         VALIDATE_STRING(params->new_display);
         ADD_PARAM("new_display=%s", params->new_display);
     }
+    if (params->display_ime_policy != SC_DISPLAY_IME_POLICY_UNDEFINDED) {
+        assert(params->display_ime_policy >= 0);
+        ADD_PARAM("display_ime_policy=%" PRIu32, params->display_ime_policy);
+    }
     if (!params->vd_destroy_content) {
         ADD_PARAM("vd_destroy_content=false");
     }

app/src/server.h

@@ -50,6 +50,7 @@ struct sc_server_params {
     bool control;
     uint32_t display_id;
     const char *new_display;
+    enum sc_display_ime_policy display_ime_policy;
     bool video;
     bool audio;
     bool audio_dup;

doc/virtual_display.md

@@ -61,3 +61,14 @@ To move them to the main display instead, use:
 ```
 scrcpy --new-display --no-vd-destroy-content
 ```
+
+## Display IME policy
+
+By default, virtual display's IME appears on the DEFAULT display.
+
+TO appears on the LOCAL display, use `--display-ime-policy=local`:
+
+```bash
+scrcpy --display-id=1 --display-ime-policy=local
+scrcpy --new-display --display-ime-policy=local
+```

server/src/main/java/com/genymobile/scrcpy/CleanUp.java

@@ -4,6 +4,7 @@
 import com.genymobile.scrcpy.util.Ln;
 import com.genymobile.scrcpy.util.Settings;
 import com.genymobile.scrcpy.util.SettingsException;
+import com.genymobile.scrcpy.wrappers.ServiceManager;
 
 import android.os.BatteryManager;
 import android.system.ErrnoException;
@@ -100,15 +101,27 @@ private void runCleanUp(Options options) {
         boolean powerOffScreen = options.getPowerOffScreenOnClose();
         int displayId = options.getDisplayId();
 
+        int restoreDisplayImePolicy = -1;
+        if (displayId > 0) {
+            int displayImePolicy = options.getDisplayImePolicy();
+            if (displayImePolicy != -1) {
+                int currentValue = ServiceManager.getWindowManager().getDisplayImePolicy(displayId);
+                if (currentValue != displayImePolicy) {
+                    ServiceManager.getWindowManager().setDisplayImePolicy(displayId, displayImePolicy);
+                    restoreDisplayImePolicy = currentValue;
+                }
+            }
+        }
+
         try {
-            run(displayId, restoreStayOn, disableShowTouches, powerOffScreen, restoreScreenOffTimeout);
+            run(displayId, restoreStayOn, disableShowTouches, powerOffScreen, restoreScreenOffTimeout, restoreDisplayImePolicy);
         } catch (IOException e) {
             Ln.e("Clean up I/O exception", e);
         }
     }
 
-    private void run(int displayId, int restoreStayOn, boolean disableShowTouches, boolean powerOffScreen, int restoreScreenOffTimeout)
-            throws IOException {
+    private void run(int displayId, int restoreStayOn, boolean disableShowTouches, boolean powerOffScreen, int restoreScreenOffTimeout,
+            int restoreDisplayImePolicy) throws IOException {
         String[] cmd = {
                 "app_process",
                 "/",
@@ -118,6 +131,7 @@ private void run(int displayId, int restoreStayOn, boolean disableShowTouches, b
                 String.valueOf(disableShowTouches),
                 String.valueOf(powerOffScreen),
                 String.valueOf(restoreScreenOffTimeout),
+                String.valueOf(restoreDisplayImePolicy),
         };
 
         ProcessBuilder builder = new ProcessBuilder(cmd);
@@ -178,6 +192,7 @@ public static void main(String... args) {
         boolean disableShowTouches = Boolean.parseBoolean(args[2]);
         boolean powerOffScreen = Boolean.parseBoolean(args[3]);
         int restoreScreenOffTimeout = Integer.parseInt(args[4]);
+        int restoreDisplayImePolicy = Integer.parseInt(args[5]);
 
         // Dynamic option
         boolean restoreDisplayPower = false;
@@ -223,6 +238,11 @@ public static void main(String... args) {
             }
         }
 
+        if (restoreDisplayImePolicy != -1) {
+            Ln.i("Restoring \"display IME policy\"");
+            ServiceManager.getWindowManager().setDisplayImePolicy(displayId, restoreDisplayImePolicy);
+        }
+
         // Change the power of the main display when mirroring a virtual display
         int targetDisplayId = displayId != Device.DISPLAY_ID_NONE ? displayId : 0;
         if (Device.isScreenOn(targetDisplayId)) {

server/src/main/java/com/genymobile/scrcpy/Options.java

@@ -48,6 +48,7 @@ public class Options {
     private boolean showTouches;
     private boolean stayAwake;
     private int screenOffTimeout = -1;
+    private int displayImePolicy = -1;
     private List<CodecOption> videoCodecOptions;
     private List<CodecOption> audioCodecOptions;
 
@@ -194,6 +195,10 @@ public List<CodecOption> getAudioCodecOptions() {
         return audioCodecOptions;
     }
 
+    public int getDisplayImePolicy() {
+        return displayImePolicy;
+    }
+
     public String getVideoEncoder() {
         return videoEncoder;
     }
@@ -381,6 +386,14 @@ public static Options parse(String... args) {
                 case "display_id":
                     options.displayId = Integer.parseInt(value);
                     break;
+                case "display_ime_policy":
+                    if (!value.isEmpty()) {
+                        options.displayImePolicy = Integer.parseInt(value);
+                        if (options.displayImePolicy == -1) {
+                            throw new IllegalArgumentException("Invalid display IME policy: " + options.displayImePolicy);
+                        }
+                    }
+                    break;
                 case "show_touches":
                     options.showTouches = Boolean.parseBoolean(value);
                     break;

server/src/main/java/com/genymobile/scrcpy/Server.java

@@ -80,9 +80,15 @@ private static void scrcpy(Options options) throws IOException, ConfigurationExc
             throw new ConfigurationException("Camera mirroring is not supported");
         }
 
-        if (Build.VERSION.SDK_INT < AndroidVersions.API_29_ANDROID_10 && options.getNewDisplay() != null) {
-            Ln.e("New virtual display is not supported before Android 10");
-            throw new ConfigurationException("New virtual display is not supported");
+        if (Build.VERSION.SDK_INT < AndroidVersions.API_29_ANDROID_10) {
+            if (options.getNewDisplay() != null) {
+                Ln.e("New virtual display is not supported before Android 10");
+                throw new ConfigurationException("New virtual display is not supported");
+            }
+            if (options.getDisplayImePolicy() != -1) {
+                Ln.e("Display IME policy is not supported before Android 10");
+                throw new ConfigurationException("Display IME policy is not supported");
+            }
         }
 
         CleanUp cleanUp = null;

server/src/main/java/com/genymobile/scrcpy/video/NewDisplayCapture.java

@@ -49,6 +49,7 @@ public class NewDisplayCapture extends SurfaceCapture {
     private Size mainDisplaySize;
     private int mainDisplayDpi;
     private int maxSize;
+    private int displayImePolicy;
     private final Rect crop;
     private final boolean captureOrientationLocked;
     private final Orientation captureOrientation;
@@ -68,6 +69,7 @@ public NewDisplayCapture(VirtualDisplayListener vdListener, Options options) {
         this.newDisplay = options.getNewDisplay();
         assert newDisplay != null;
         this.maxSize = options.getMaxSize();
+        this.displayImePolicy = options.getDisplayImePolicy();
         this.crop = options.getCrop();
         assert options.getCaptureOrientationLock() != null;
         this.captureOrientationLocked = options.getCaptureOrientationLock() != Orientation.Lock.Unlocked;
@@ -191,6 +193,10 @@ public void startNew(Surface surface) {
             virtualDisplayId = virtualDisplay.getDisplay().getDisplayId();
             Ln.i("New display: " + displaySize.getWidth() + "x" + displaySize.getHeight() + "/" + dpi + " (id=" + virtualDisplayId + ")");
 
+            if (displayImePolicy != -1) {
+                ServiceManager.getWindowManager().setDisplayImePolicy(virtualDisplayId, displayImePolicy);
+            }
+
             displaySizeMonitor.start(virtualDisplayId, this::invalidate);
         } catch (Exception e) {
             Ln.e("Could not create display", e);