[feat] add macOS and mobile resolution controls with disconnect restore

apps/android/app/src/main/java/cn/crossdesk/mobile/BackgroundSession.java

@@ -17,6 +17,7 @@ final class BackgroundSession implements NativeSession.Listener {
     String identity = "", platform = "", clipboard = "", fileStatus = "", endReason = "";
     JSONArray displays = new JSONArray();
     RemoteVideoSettings videoSettings;
+    RemoteDisplayResolutions displayResolutions=new RemoteDisplayResolutions();
     int signalState, selectedDisplay, width, height;
     boolean muted, remoteServiceAvailable, background, ended;
     boolean autoLandscape;
@@ -55,6 +56,7 @@ final class BackgroundSession implements NativeSession.Listener {
     }
     @Override public void data(JSONObject message) {
         if (view != null) { view.data(message); return; }
+        displayResolutions.receive(message);
         if (message.optInt("type", -1) == 12 && videoSettings != null) videoSettings.receive(message);
         if (message.optInt("type", -1) == 5) {
             JSONObject service = message.optJSONObject("service_status");
@@ -80,6 +82,7 @@ final class BackgroundSession implements NativeSession.Listener {
         if (view != null) view.fileTransfer(name, progress, sending, received);
     }
     @Override public void controlFeedback(String text) { if (view != null) view.controlFeedback(text); }
+    @Override public void displayResolutionFailed(long requestId) { if(view!=null)view.displayResolutionFailed(requestId);else displayResolutions.expire(requestId); }
     @Override public void privacyChanged() { if (view != null) view.privacyChanged(); }
     @Override public void presence(JSONObject message) { if (view != null) view.presence(message); }
     @Override public void announcement(JSONObject message) { if (view != null) view.announcement(message); }

apps/android/app/src/main/java/cn/crossdesk/mobile/LocalizationKeys.java

@@ -311,6 +311,9 @@ final class LocalizationKeys {
         IDS.put("，已保存密码", R.string.text_ba9a792d063a8c86);
         IDS.put("，接收 ", R.string.text_f4c1f9d7896760a7);
         IDS.put("，点击重试", R.string.text_42237b5ec70c26f3);
+        IDS.put("被控端分辨率", R.string.text_59c9dca5568a6cd3);
+        IDS.put("设备不支持", R.string.text_36e0073276c0e39f);
+        IDS.put("等待电脑端确认…", R.string.text_7b3440ad0f81b811);
     }
     private LocalizationKeys() {}
 }

apps/android/app/src/main/java/cn/crossdesk/mobile/MainActivity.java

@@ -93,6 +93,8 @@ public final class MainActivity extends Activity implements NativeSession.Listen
     private RemoteVideoSettings videoSettings=new RemoteVideoSettings(1);
     private final android.os.Handler mainHandler=new android.os.Handler(android.os.Looper.getMainLooper());
     private Runnable videoSettingsTimeout;
+    private RemoteDisplayResolutions displayResolutions=new RemoteDisplayResolutions();
+    private Runnable displayResolutionTimeout;
     private final Set<Integer> pressed=new HashSet<>();
     private Runnable backAction;
 
@@ -349,8 +351,9 @@ public final class MainActivity extends Activity implements NativeSession.Listen
             public void chord(int code,int[] modifiers){if(session==null)return;for(int modifier:modifiers)session.key(modifier,true);tapKey(code);for(int i=modifiers.length-1;i>=0;i--)session.key(modifiers[i],false);}public void shortcut(int code){MainActivity.this.shortcut(code);}public void text(String value){sendText(value);}
             public void mute(){muted=!muted;if(session!=null)session.control(2,muted?0:1);controls.setMuted(muted);}
             public void mouse(){boolean relative=!preferences.getBoolean("relativeMouse",true);preferences.edit().putBoolean("relativeMouse",relative).apply();video.setRelative(relative);controls.setRelative(relative);}
+            public void displayResolution(RemoteDisplayResolutions.Mode mode){updateDisplayResolution(mode);}
             public void videoSettings(int field,int value){RemoteVideoSettings.Values old=MainActivity.this.videoSettings.selection;updateVideoSettings(new RemoteVideoSettings.Values(field==0?value:old.quality,field==1?value:old.frameRate,field==2?value:old.preference));}
-        });controls.setHostPlatform(hostPlatform);controls.setRelative(preferences.getBoolean("relativeMouse",true));controls.setMuted(muted);controls.videoSettings(videoSettings);root.addView(controls,new LinearLayout.LayoutParams(-1,-1));getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
+        });controls.setHostPlatform(hostPlatform);controls.setRelative(preferences.getBoolean("relativeMouse",true));controls.setMuted(muted);controls.videoSettings(videoSettings);controls.displayResolutions(displayResolutions,selectedDisplay);root.addView(controls,new LinearLayout.LayoutParams(-1,-1));getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
         controls.attachMouseBar(canvas,new VirtualMouseBar(ui,video.mouseInput));
         privacyChanged();
         video.remoteFocusChanged=()->{if(controls!=null)controls.resetKeyboardContext();};
@@ -506,7 +509,7 @@ public final class MainActivity extends Activity implements NativeSession.Listen
     private void tapKey(int code){if(session!=null){session.key(code,true);session.key(code,false);}}
     private void shortcut(int code){if(session!=null){int modifier=hostPlatform.equals("macos")?0x5B:0x11;session.key(modifier,true);tapKey(code);session.key(modifier,false);}}
     private void selectDisplay(){
-        if(!ready)return;int count=Math.min(displays.length(),8);if(count==0){toast(L10n.tr("等待远端屏幕信息"));return;}String[] labels=new String[count];for(int i=0;i<count;i++){JSONObject display=displays.optJSONObject(i);labels[i]=(i+1)+" · "+(display==null?L10n.tr("显示器"):display.optString("name",L10n.tr("显示器")));}new AlertDialog.Builder(this).setTitle(L10n.tr("显示器")).setItems(labels,(d,w)->{if(session!=null){if(w!=selectedDisplay&&video!=null)video.resetViewport();selectedDisplay=w;session.control(4,w);if(controls!=null)controls.resetVideoStatistics();}}).show();
+        if(!ready)return;int count=Math.min(displays.length(),8);if(count==0){toast(L10n.tr("等待远端屏幕信息"));return;}String[] labels=new String[count];for(int i=0;i<count;i++){JSONObject display=displays.optJSONObject(i);labels[i]=(i+1)+" · "+(display==null?L10n.tr("显示器"):display.optString("name",L10n.tr("显示器")));}new AlertDialog.Builder(this).setTitle(L10n.tr("显示器")).setItems(labels,(d,w)->{if(session!=null){if(w!=selectedDisplay&&video!=null)video.resetViewport();selectedDisplay=w;session.control(4,w);if(controls!=null)controls.displayResolutions(displayResolutions,selectedDisplay);if(controls!=null)controls.resetVideoStatistics();}}).show();
     }
     private void secureAttention(){
         if(!ready||session==null||!hostPlatform.equals("windows"))return;
@@ -645,7 +648,22 @@ public final class MainActivity extends Activity implements NativeSession.Listen
         remoteVersionCheck.reset();
         if(remoteUpdateDialog!=null){remoteUpdateDialog.dismiss();remoteUpdateDialog=null;}
     }
+    private void cancelDisplayResolutionTimeout(){if(displayResolutionTimeout!=null)mainHandler.removeCallbacks(displayResolutionTimeout);displayResolutionTimeout=null;}
+    private void updateDisplayResolution(RemoteDisplayResolutions.Mode mode){
+        if(!ready||session==null||!hasNetworkConsent())return;
+        RemoteDisplayResolutions.Request request=displayResolutions.begin(selectedDisplay,mode);if(request==null)return;
+        cancelDisplayResolutionTimeout();session.displayResolution(request);
+        if(controls!=null)controls.displayResolutions(displayResolutions,selectedDisplay);
+        displayResolutionTimeout=()->{displayResolutions.expire(request.id);if(controls!=null)controls.displayResolutions(displayResolutions,selectedDisplay);};
+        mainHandler.postDelayed(displayResolutionTimeout,10000);
+    }
+    @Override public void displayResolutionFailed(long requestId){
+        displayResolutions.expire(requestId);
+        if(!displayResolutions.pending)cancelDisplayResolutionTimeout();
+        if(controls!=null)controls.displayResolutions(displayResolutions,selectedDisplay);
+    }
     private void resetVideoSettings(){
+        cancelDisplayResolutionTimeout();displayResolutions=new RemoteDisplayResolutions();
         cancelVideoSettingsTimeout();
         android.util.DisplayMetrics metrics=getResources().getDisplayMetrics();
         videoSettings=new RemoteVideoSettings(preferences.getInt("videoPreference",1),Math.max(metrics.widthPixels,metrics.heightPixels));
@@ -658,6 +676,11 @@ public final class MainActivity extends Activity implements NativeSession.Listen
     }
     @Override public void data(JSONObject message){
         if(session==null)return;
+        if(message.optInt("type",-1)==3||message.optInt("type",-1)==16){
+            displayResolutions.receive(message);if(!displayResolutions.pending)cancelDisplayResolutionTimeout();
+            if(controls!=null)controls.displayResolutions(displayResolutions,selectedDisplay);
+            if(message.optInt("type",-1)==16)return;
+        }
         if(message.optInt("type",-1)==5){JSONObject service=message.optJSONObject("service_status");remoteServiceAvailable=service!=null&&service.optBoolean("available",false);return;}
         if(message.optInt("type",-1)==12){if(!ready)return;videoSettings.receive(message);if(!videoSettings.pending)cancelVideoSettingsTimeout();if(controls!=null)controls.videoSettings(videoSettings);return;}
         JSONObject info=message.optJSONObject("host_info");
@@ -746,7 +769,7 @@ public final class MainActivity extends Activity implements NativeSession.Listen
         BackgroundSession retained=backgroundSession;if(retained==null)return;
         retained.identity=localIdentity;retained.signalState=signalState;retained.platform=hostPlatform;retained.displays=displays;
         retained.muted=muted;retained.selectedDisplay=selectedDisplay;retained.remoteServiceAvailable=remoteServiceAvailable;
-        retained.clipboard=remoteClipboard;retained.videoSettings=videoSettings;retained.receivedFile=receivedFile;
+        retained.clipboard=remoteClipboard;retained.videoSettings=videoSettings;retained.displayResolutions=displayResolutions;retained.receivedFile=receivedFile;
         retained.width=videoWidth;retained.height=videoHeight;
         retained.autoLandscape=remoteOrientation.autoLandscape();
     }
@@ -783,10 +806,10 @@ public final class MainActivity extends Activity implements NativeSession.Listen
         connectedRemote=retained.remote;localIdentity=retained.identity;signalState=retained.signalState;signalError="";
         hostPlatform=retained.platform;displays=retained.displays;muted=retained.muted;selectedDisplay=retained.selectedDisplay;
         remoteServiceAvailable=retained.remoteServiceAvailable;remoteClipboard=retained.clipboard;receivedFile=retained.receivedFile;
-        videoSettings=retained.videoSettings;ready=true;retained.attach(this);
+        videoSettings=retained.videoSettings;displayResolutions=retained.displayResolutions;ready=true;retained.attach(this);
         if(rebuild)sessionScreen(retained.autoLandscape);
         if(retained.width>0&&retained.height>0)videoSize(retained.width,retained.height);
-        if(controls!=null){controls.setHostPlatform(hostPlatform);controls.setMuted(muted);controls.videoSettings(videoSettings);controls.fileStatus(retained.fileStatus,receivedFile!=null);}
+        if(controls!=null){controls.setHostPlatform(hostPlatform);controls.setMuted(muted);controls.videoSettings(videoSettings);controls.displayResolutions(displayResolutions,selectedDisplay);controls.fileStatus(retained.fileStatus,receivedFile!=null);}
         retained.setBackground(false);signaling(signalState,localIdentity);
         return true;
     }
@@ -844,11 +867,12 @@ public final class MainActivity extends Activity implements NativeSession.Listen
         if(!isFinishing()&&!enteredPictureInPicture&&ready&&(backgroundSession!=null||documentSession==null)&&prepareBackgroundSession(false)){
             captureBackgroundSession();backgroundSession.detach(this);backgroundSession.setBackground(true);
             mainHandler.removeCallbacks(presenceTick);recentPresence.setConnected(false,android.os.SystemClock.elapsedRealtime());announcementInbox.setConnected(false);
+            cancelDisplayResolutionTimeout();if(displayResolutions.pending)displayResolutions.expire(displayResolutions.requested.id);
             cancelVideoSettingsTimeout();if(videoSettings.pending)videoSettings.expire(videoSettings.requestId);
             resetRemoteVersionCheck();if(disconnectDialog!=null)disconnectDialog.dismiss();
         }else if(documentSession==null||documentSession!=session||isFinishing()){if(session!=null)end(isFinishing()?"":L10n.tr("远程窗口已关闭，或后台保活未能启动，会话已结束"));stopSignaling();}
         super.onStop();}
-    @Override protected void onDestroy(){dismissPrivacyUnlockDialog();mainHandler.removeCallbacks(documentTimeout);documentSession=null;documentToSave=null;appUpdates.setEnabled(false);pageHost.finish();resetRemoteVersionCheck();cancelVideoSettingsTimeout();previews.removeListener(previewChanged);if(privacyDialog!=null)privacyDialog.dismiss();if(previewDialog!=null)previewDialog.dismiss();announcementInbox.close();if(disconnectDialog!=null)disconnectDialog.dismiss();if(passwordDialog!=null)passwordDialog.dismiss();if(progressDialog!=null)progressDialog.dismiss();
+    @Override protected void onDestroy(){dismissPrivacyUnlockDialog();mainHandler.removeCallbacks(documentTimeout);documentSession=null;documentToSave=null;appUpdates.setEnabled(false);pageHost.finish();resetRemoteVersionCheck();cancelVideoSettingsTimeout();cancelDisplayResolutionTimeout();previews.removeListener(previewChanged);if(privacyDialog!=null)privacyDialog.dismiss();if(previewDialog!=null)previewDialog.dismiss();announcementInbox.close();if(disconnectDialog!=null)disconnectDialog.dismiss();if(passwordDialog!=null)passwordDialog.dismiss();if(progressDialog!=null)progressDialog.dismiss();
         if(connectionDialog!=null)connectionDialog.dismiss();
         boolean retained=!isFinishing()&&backgroundSession!=null&&!backgroundSession.ended&&RemoteSessionService.current()==backgroundSession;
         if(backgroundSession!=null)backgroundSession.detach(this);

apps/android/app/src/main/java/cn/crossdesk/mobile/NativeSession.java

@@ -31,6 +31,7 @@ final class NativeSession implements AutoCloseable {
         default void fileTransfer(String name,double progress,boolean sending,File received) { }
         default void controlFeedback(String message) { }
         default void privacyChanged() { }
+        default void displayResolutionFailed(long requestId) { }
         default void signaling(int state, String deviceId) { }
         default void presence(JSONObject message) { }
         default void announcement(JSONObject message) { }
@@ -243,6 +244,9 @@ final class NativeSession implements AutoCloseable {
         if(!settings.valid()||requestId<0||requestId>0xffffffffL)return;
         execute(()->{if(connected&&!nVideoSettings(handle,settings.quality,settings.frameRate,settings.preference,requestId))ui(()->listener.data(settings.status(requestId,false)));});
     }
+    void displayResolution(RemoteDisplayResolutions.Request request){
+        execute(()->{if(!connected||!nDisplayResolution(handle,request.displayId,request.displayKey,request.mode.width,request.mode.height,request.id))ui(()->listener.displayResolutionFailed(request.id));});
+    }
     void announcementRequest(JSONObject request,String requestId){
         byte[] bytes=request.toString().getBytes(StandardCharsets.UTF_8);
         execute(()->{if(!signalReady||identity.isEmpty()||!nAnnouncementRequest(handle,bytes))ui(()->listener.announcementFailed(requestId));});
@@ -344,6 +348,7 @@ final class NativeSession implements AutoCloseable {
     private static native void nKey(long handle, int code, boolean down);
     private static native void nText(long handle,byte[] text);
     private static native void nControl(long handle, int type, int value);
+    private static native boolean nDisplayResolution(long handle,int displayId,String displayKey,int width,int height,long requestId);
     private static native boolean nVideoSettings(long handle,int quality,int frameRate,int preference,long requestId);
     private static native boolean nAnnouncementRequest(long handle,byte[] data);
     private static native boolean nPresenceRequest(long handle,byte[] data);

apps/android/app/src/main/java/cn/crossdesk/mobile/RemoteDisplayResolutions.java

@@ -0,0 +1,90 @@
+package cn.crossdesk.mobile;
+
+import org.json.JSONArray;
+import org.json.JSONObject;
+import java.nio.charset.StandardCharsets;
+import java.util.ArrayList;
+import java.util.List;
+
+/** Host-confirmed desktop modes. Requests are scoped to the native display identity. */
+final class RemoteDisplayResolutions {
+    static final class Mode {
+        final int width, height;
+        Mode(int width,int height){this.width=width;this.height=height;}
+        boolean same(Mode other){return other!=null&&width==other.width&&height==other.height;}
+        String label(){return width+" × "+height;}
+    }
+    static final class Display {
+        final int id;
+        final String key;
+        final Mode current;
+        final List<Mode> modes=new ArrayList<>();
+        Display(JSONObject value)throws Exception{
+            id=(int)integer(value,"display_id",0,31);
+            Object identity=value.get("display_key");
+            if(!(identity instanceof String))throw new IllegalArgumentException();
+            key=(String)identity;
+            if(key.isEmpty()||key.getBytes(StandardCharsets.UTF_8).length>1024||key.indexOf('\0')>=0)throw new IllegalArgumentException();
+            current=mode(value);
+            JSONArray options=value.getJSONArray("modes");
+            if(options.length()>256)throw new IllegalArgumentException();
+            for(int i=0;i<options.length();i++){
+                Mode item=mode(options.getJSONObject(i));
+                if(!supports(item))modes.add(item);
+            }
+        }
+        boolean supports(Mode value){for(Mode item:modes)if(item.same(value))return true;return false;}
+    }
+    static final class Request {
+        final int displayId;
+        final String displayKey;
+        final Mode mode;
+        final long id;
+        Request(Display display,Mode mode,long id){this.displayId=display.id;this.displayKey=display.key;this.mode=mode;this.id=id;}
+        boolean matches(JSONObject value)throws Exception{
+            return integer(value,"request_id",1,0xffffffffL)==id&&integer(value,"display_id",0,31)==displayId
+                    &&displayKey.equals(value.get("display_key"))&&mode.same(mode(value));
+        }
+    }
+    private List<Display> displays=new ArrayList<>();
+    Request requested;
+    boolean pending,failed;
+    Display display(int id){for(Display display:displays)if(display.id==id)return display;return null;}
+    Request begin(int displayId,Mode mode){
+        Display display=display(displayId);
+        if(pending||display==null||!display.supports(mode)||display.current.same(mode))return null;
+        long next=requested==null?1:(requested.id+1)&0xffffffffL;
+        requested=new Request(display,mode,next==0?1:next);pending=true;failed=false;return requested;
+    }
+    void expire(long id){if(pending&&requested!=null&&requested.id==id){pending=false;failed=true;}}
+    void receive(JSONObject message){
+        try{
+            int type=message.getInt("type");JSONArray values;JSONObject response=null;
+            if(type==3){JSONObject host=message.getJSONObject("host_info");values=host.has("display_resolutions")?host.getJSONArray("display_resolutions"):new JSONArray();}
+            else if(type==16){response=message.getJSONObject("display_resolution");if(requested==null||!requested.matches(response)||!(response.get("accepted") instanceof Boolean))return;values=message.getJSONArray("display_resolutions");}
+            else return;
+            if(values.length()>32)return;
+            List<Display> actual=new ArrayList<>();
+            for(int i=0;i<values.length();i++){
+                Display display=new Display(values.getJSONObject(i));
+                for(Display previous:actual)if(previous.id==display.id)return;
+                actual.add(display);
+            }
+            displays=actual;
+            if(response!=null){
+                Display display=display(requested.displayId);pending=false;
+                failed=!response.getBoolean("accepted")||display==null||!display.key.equals(requested.displayKey)||!display.current.same(requested.mode);
+            }else if(pending){
+                Display display=display(requested.displayId);
+                if(display==null||!display.key.equals(requested.displayKey)||!display.supports(requested.mode))expire(requested.id);
+            }
+        }catch(Exception ignored){ /* Ignore malformed or unrelated control messages. */ }
+    }
+    String feedback(){return pending?L10n.tr("等待电脑端确认…"):failed?L10n.tr("调整失败，请重试。"):"";}
+    private static Mode mode(JSONObject value)throws Exception{return new Mode((int)integer(value,"width",1,32768),(int)integer(value,"height",1,32768));}
+    private static long integer(JSONObject value,String key,long min,long max)throws Exception{
+        Object raw=value.get(key);
+        if(!(raw instanceof Integer)&&!(raw instanceof Long))throw new IllegalArgumentException();
+        long number=((Number)raw).longValue();if(number<min||number>max)throw new IllegalArgumentException();return number;
+    }
+}

apps/android/app/src/main/java/cn/crossdesk/mobile/SessionControls.java

@@ -14,6 +14,7 @@ final class SessionControls extends FrameLayout {
         void chord(int code,int[] modifiers); void shortcut(int code); void text(String value); void mute(); void mouse();
         default boolean textEdit(int deletions,String value){return false;}
         void videoSettings(int field,int value);
+        default void displayResolution(RemoteDisplayResolutions.Mode mode) { }
         void sendFile(); void saveFile(); void secureAttention();
         default void togglePrivacy() { }
     }
@@ -36,7 +37,10 @@ final class SessionControls extends FrameLayout {
         int height=Math.max(0,getRootView().getHeight()-visible.bottom);
         keyboardInsets(height,height>ui.dp(80),0);
     }
-    private TextView videoFeedback;
+    private TextView videoFeedback,resolutionButton,resolutionFeedback;
+    private RemoteDisplayResolutions resolutions=new RemoteDisplayResolutions();
+    private int resolutionDisplay;
+    private android.app.AlertDialog resolutionDialog;
     private RemotePrivacyScreen privacy=new RemotePrivacyScreen();
     private View privacyButton;
     private MobileUi.Icon privacyIcon;
@@ -111,13 +115,14 @@ final class SessionControls extends FrameLayout {
     void resetVideoStatistics(){statistics(new RemoteNetworkStatistics.Snapshot(network.report,0,0,0,Double.NaN,network.rtt,network.remoteEncoder,network.localDecoder));}
     void statistics(RemoteNetworkStatistics.Snapshot value){network=value;renderNetwork();}
     void videoSettings(RemoteVideoSettings value){settings=value;renderVideoSettings();}
+    void displayResolutions(RemoteDisplayResolutions value,int display){resolutions=value;resolutionDisplay=display;renderResolutions();}
     void privacyScreen(RemotePrivacyScreen value){privacy=value;renderPrivacy();}
     void fileStatus(String status,boolean received){transferStatus=status;hasReceivedFile=received;renderFileStatus();}
     private void renderFileStatus(){
         if(transferLabel!=null){transferLabel.setText(transferStatus);transferLabel.setVisibility(transferStatus.isEmpty()?GONE:VISIBLE);}
         if(saveFileButton!=null)saveFileButton.setVisibility(hasReceivedFile?VISIBLE:GONE);
     }
-    private void closeMenu(){if(menu!=null){removeView(menu);menu=null;menuScroll=null;}if(shield!=null){removeView(shield);shield=null;}videoFeedback=transferLabel=saveFileButton=null;privacyFeedback=privacyCaption=null;privacyButton=null;privacyIcon=null;trafficCells=null;trafficRows=null;networkDetails=null;encryptionLock=encryptionOpen=null;settingRows.clear();orb.setContentDescription(L10n.tr("展开远程控制菜单"));positionMouse();}
+    private void closeMenu(){if(resolutionDialog!=null){resolutionDialog.dismiss();resolutionDialog=null;}resolutionButton=resolutionFeedback=null;if(menu!=null){removeView(menu);menu=null;menuScroll=null;}if(shield!=null){removeView(shield);shield=null;}videoFeedback=transferLabel=saveFileButton=null;privacyFeedback=privacyCaption=null;privacyButton=null;privacyIcon=null;trafficCells=null;trafficRows=null;networkDetails=null;encryptionLock=encryptionOpen=null;settingRows.clear();orb.setContentDescription(L10n.tr("展开远程控制菜单"));positionMouse();}
     private void openMenu(String page){
         cancelMouseInput();
         closeMenu();menuPage=page;shield=new View(getContext());shield.setOnClickListener(v->closeMenu());addView(shield,new LayoutParams(-1,-1));
@@ -153,6 +158,9 @@ final class SessionControls extends FrameLayout {
         }else if(page.equals("network")){
             networkPage(body);
         }else{
+            TextView resolutionTitle=ui.text(L10n.tr("被控端分辨率"),12,false);resolutionTitle.setTextColor(SECONDARY);body.addView(resolutionTitle);ui.gap(body,5);
+            resolutionButton=ui.action("",INK,this::chooseResolution);resolutionButton.setTextSize(13);resolutionButton.setBackground(ui.background(0xFFF0F0F2,7));body.addView(resolutionButton,ui.size(-1,34));
+            resolutionFeedback=ui.text("",12,false);resolutionFeedback.setTextColor(SECONDARY);resolutionFeedback.setAccessibilityLiveRegion(ACCESSIBILITY_LIVE_REGION_POLITE);body.addView(resolutionFeedback);ui.gap(body,12);renderResolutions();
             settingRows.add(new SettingRow(body,0,L10n.tr("画面质量"),new String[]{L10n.tr("低"),L10n.tr("中"),L10n.tr("高")},new int[]{0,1,2}));ui.gap(body,12);
             settingRows.add(new SettingRow(body,1,L10n.tr("画面采集帧率"),new String[]{"30 fps","60 fps"},new int[]{30,60}));ui.gap(body,12);
             settingRows.add(new SettingRow(body,2,L10n.tr("画面偏好"),RemoteVideoSettings.preferences(),new int[]{0,1,2}));renderVideoSettings();
@@ -192,6 +200,26 @@ final class SessionControls extends FrameLayout {
         }
         void render(){group.setSelection(selectionIndex());group.setOptionsEnabled(settings.supported);}
     }
+    private void renderResolutions(){
+        if(resolutionButton==null)return;
+        RemoteDisplayResolutions.Display display=resolutions.display(resolutionDisplay);
+        boolean enabled=display!=null&&!display.modes.isEmpty()&&!resolutions.pending;
+        resolutionButton.setText(display==null?L10n.tr("设备不支持"):display.current.label()+" ▾");
+        resolutionButton.setEnabled(enabled);resolutionButton.setAlpha(enabled?1f:.45f);
+        String feedback=resolutions.feedback();resolutionFeedback.setText(feedback);resolutionFeedback.setVisibility(feedback.isEmpty()?GONE:VISIBLE);
+    }
+    private void chooseResolution(){
+        RemoteDisplayResolutions.Display display=resolutions.display(resolutionDisplay);
+        if(display==null||resolutions.pending||display.modes.isEmpty())return;
+        String[] labels=new String[display.modes.size()];int selected=-1;
+        for(int i=0;i<labels.length;i++){labels[i]=display.modes.get(i).label();if(display.current.same(display.modes.get(i)))selected=i;}
+        resolutionDialog=new android.app.AlertDialog.Builder(getContext()).setTitle(L10n.tr("被控端分辨率"))
+            .setSingleChoiceItems(labels,selected,(dialog,index)->{
+                dialog.dismiss();resolutionDialog=null;
+                RemoteDisplayResolutions.Display current=resolutions.display(resolutionDisplay);
+                if(current!=null&&current.id==display.id&&current.key.equals(display.key))actions.displayResolution(display.modes.get(index));
+            }).setNegativeButton(L10n.tr("取消"),null).show();
+    }
     private void renderVideoSettings(){
         if(videoFeedback!=null){String feedback=settings.feedback();videoFeedback.setText(feedback);videoFeedback.setVisibility(feedback.isEmpty()?GONE:VISIBLE);}
         for(SettingRow row:settingRows)row.render();

apps/android/app/src/main/res/values-b+zh+Hans/strings.xml

@@ -305,4 +305,7 @@
     <string name="text_ba9a792d063a8c86" formatted="false">"，已保存密码"</string>
     <string name="text_f4c1f9d7896760a7" formatted="false">"，接收 "</string>
     <string name="text_42237b5ec70c26f3" formatted="false">"，点击重试"</string>
+    <string name="text_59c9dca5568a6cd3" formatted="false">"被控端分辨率"</string>
+    <string name="text_36e0073276c0e39f" formatted="false">"设备不支持"</string>
+    <string name="text_7b3440ad0f81b811" formatted="false">"等待电脑端确认…"</string>
 </resources>

apps/android/app/src/main/res/values-b+zh+Hant/strings.xml

@@ -305,4 +305,7 @@
     <string name="text_ba9a792d063a8c86" formatted="false">"，已儲存密碼"</string>
     <string name="text_f4c1f9d7896760a7" formatted="false">"，接收 "</string>
     <string name="text_42237b5ec70c26f3" formatted="false">"，點選重試"</string>
+    <string name="text_59c9dca5568a6cd3" formatted="false">"被控端解析度"</string>
+    <string name="text_36e0073276c0e39f" formatted="false">"裝置不支援"</string>
+    <string name="text_7b3440ad0f81b811" formatted="false">"等待電腦端確認…"</string>
 </resources>

apps/android/app/src/main/res/values-de/strings.xml

@@ -305,4 +305,7 @@
     <string name="text_ba9a792d063a8c86" formatted="false">", Passwort gespeichert"</string>
     <string name="text_f4c1f9d7896760a7" formatted="false">", empfangen "</string>
     <string name="text_42237b5ec70c26f3" formatted="false">", klicken Sie auf Wiederholen"</string>
+    <string name="text_59c9dca5568a6cd3" formatted="false">"Auflösung des entfernten Bildschirms"</string>
+    <string name="text_36e0073276c0e39f" formatted="false">"Nicht unterstützt"</string>
+    <string name="text_7b3440ad0f81b811" formatted="false">"Warten auf Bestätigung vom Computer..."</string>
 </resources>

apps/android/app/src/main/res/values-es/strings.xml

@@ -305,4 +305,7 @@
     <string name="text_ba9a792d063a8c86" formatted="false">", contraseña guardada"</string>
     <string name="text_f4c1f9d7896760a7" formatted="false">", recibir "</string>
     <string name="text_42237b5ec70c26f3" formatted="false">", haga clic en Reintentar"</string>
+    <string name="text_59c9dca5568a6cd3" formatted="false">"Resolución de la pantalla remota"</string>
+    <string name="text_36e0073276c0e39f" formatted="false">"No compatible"</string>
+    <string name="text_7b3440ad0f81b811" formatted="false">"Esperando confirmación del ordenador..."</string>
 </resources>

apps/android/app/src/main/res/values-fr/strings.xml

@@ -305,4 +305,7 @@
     <string name="text_ba9a792d063a8c86" formatted="false">", mot de passe enregistré"</string>
     <string name="text_f4c1f9d7896760a7" formatted="false">", recevoir "</string>
     <string name="text_42237b5ec70c26f3" formatted="false">", cliquez sur Réessayer"</string>
+    <string name="text_59c9dca5568a6cd3" formatted="false">"Résolution de l’écran distant"</string>
+    <string name="text_36e0073276c0e39f" formatted="false">"Non pris en charge"</string>
+    <string name="text_7b3440ad0f81b811" formatted="false">"En attente de confirmation de l\'ordinateur..."</string>
 </resources>

apps/android/app/src/main/res/values-ja/strings.xml

@@ -305,4 +305,7 @@
     <string name="text_ba9a792d063a8c86" formatted="false">"、パスワードが保存されました"</string>
     <string name="text_f4c1f9d7896760a7" formatted="false">"、受け取ります "</string>
     <string name="text_42237b5ec70c26f3" formatted="false">"、「再試行」をクリックします"</string>
+    <string name="text_59c9dca5568a6cd3" formatted="false">"接続先の画面解像度"</string>
+    <string name="text_36e0073276c0e39f" formatted="false">"サポートされていません"</string>
+    <string name="text_7b3440ad0f81b811" formatted="false">"コンピューターからの確認を待っています..."</string>
 </resources>

apps/android/app/src/main/res/values-ko/strings.xml

@@ -305,4 +305,7 @@
     <string name="text_ba9a792d063a8c86" formatted="false">", 비밀번호가 저장되었습니다"</string>
     <string name="text_f4c1f9d7896760a7" formatted="false">", 수신 "</string>
     <string name="text_42237b5ec70c26f3" formatted="false">", 재시도를 클릭하세요."</string>
+    <string name="text_59c9dca5568a6cd3" formatted="false">"원격 화면 해상도"</string>
+    <string name="text_36e0073276c0e39f" formatted="false">"지원되지 않음"</string>
+    <string name="text_7b3440ad0f81b811" formatted="false">"컴퓨터의 확인을 기다리는 중..."</string>
 </resources>

apps/android/app/src/main/res/values-pt/strings.xml

@@ -305,4 +305,7 @@
     <string name="text_ba9a792d063a8c86" formatted="false">", senha salva"</string>
     <string name="text_f4c1f9d7896760a7" formatted="false">", receba "</string>
     <string name="text_42237b5ec70c26f3" formatted="false">", clique em Tentar novamente"</string>
+    <string name="text_59c9dca5568a6cd3" formatted="false">"Resolução da tela remota"</string>
+    <string name="text_36e0073276c0e39f" formatted="false">"Não suportado"</string>
+    <string name="text_7b3440ad0f81b811" formatted="false">"Aguardando confirmação do computador..."</string>
 </resources>

apps/android/app/src/main/res/values-ru/strings.xml

@@ -305,4 +305,7 @@
     <string name="text_ba9a792d063a8c86" formatted="false">", пароль сохранен"</string>
     <string name="text_f4c1f9d7896760a7" formatted="false">", получить "</string>
     <string name="text_42237b5ec70c26f3" formatted="false">"нажмите «Повторить»."</string>
+    <string name="text_59c9dca5568a6cd3" formatted="false">"Разрешение удалённого экрана"</string>
+    <string name="text_36e0073276c0e39f" formatted="false">"Не поддерживается"</string>
+    <string name="text_7b3440ad0f81b811" formatted="false">"Ожидание подтверждения от компьютера..."</string>
 </resources>

apps/android/app/src/main/res/values/strings.xml

@@ -305,4 +305,7 @@
     <string name="text_ba9a792d063a8c86" formatted="false">", password saved"</string>
     <string name="text_f4c1f9d7896760a7" formatted="false">", receive "</string>
     <string name="text_42237b5ec70c26f3" formatted="false">", click Retry"</string>
+    <string name="text_59c9dca5568a6cd3" formatted="false">"Remote display resolution"</string>
+    <string name="text_36e0073276c0e39f" formatted="false">"Unsupported"</string>
+    <string name="text_7b3440ad0f81b811" formatted="false">"Waiting for confirmation from the computer..."</string>
 </resources>

apps/android/native/rtc_bridge.cpp

@@ -422,6 +422,16 @@ extern "C" JNIEXPORT jboolean JNICALL JNI_METHOD(nVideoSettings)(
   if (data.empty()) return false;
   return MiniRtcSendReliableDataFrame(s->controller, data.data(), data.size(), kControlStream) == 0;
 }
+extern "C" JNIEXPORT jboolean JNICALL JNI_METHOD(nDisplayResolution)(
+    JNIEnv* env, jclass, jlong handle, jint display_id, jstring display_key,
+    jint width, jint height, jlong request_id) {
+  auto* s = From(handle);
+  if (!s || !s->controller || s->stopping || request_id <= 0 || request_id > UINT32_MAX) return false;
+  const auto data = mobile_controller::DisplayResolutionMessage(
+      display_id, String(env, display_key), width, height, static_cast<uint32_t>(request_id));
+  return !data.empty() && MiniRtcSendReliableDataFrame(
+      s->controller, data.data(), data.size(), kControlStream) == 0;
+}
 extern "C" JNIEXPORT jboolean JNICALL JNI_METHOD(nSecureAttention)(JNIEnv*, jclass, jlong handle) {
   auto* s = From(handle);
   if (!s || !s->controller || s->stopping) return false;