Initial commit

2017-08-15 16:59:01 +08:00
commit bdc83e07ef
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+//
+//  RTSDemoViewController.h
+//  NIM
+//
+//  Created by 高峰 on 15/7/1.
+//  Copyright (c) 2015年 Netease. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+
+@interface NTESWhiteboardViewController : UIViewController
+
+- (id)initWithSessionID:(NSString *)sessionID
+                 peerID:(NSString *)peerID
+                  types:(NSUInteger)types
+                   info:(NSString *)info;
+
+
+@end
@@ -0,0 +1,668 @@
+//
+//  RTSDemoViewController.m
+//  NIM
+//
+//  Created by 高峰 on 15/7/1.
+//  Copyright (c) 2015年 Netease. All rights reserved.
+//
+
+#import "NTESWhiteboardViewController.h"
+#import <NIMSDK/NIMSDK.h>
+#import "NTESWhiteboardDrawView.h"
+#import "NTESTimerHolder.h"
+#import "Toast+UIView.h"
+#import "UIActionSheet+NTESBlock.h"
+#import "NIMAvatarImageView.h"
+#import "NTESWhiteboardAttachment.h"
+#import "NTESSessionMsgConverter.h"
+//#import "NIMRTSRecordingInfo.h"
+#import "NTESDevice.h"
+#import "NTESBundleSetting.h"
+
+typedef NS_ENUM(NSUInteger, WhiteBoardCmdType){
+    WhiteBoardCmdTypePointStart    = 1,
+    WhiteBoardCmdTypePointMove     = 2,
+    WhiteBoardCmdTypePointEnd      = 3,
+    
+    WhiteBoardCmdTypeCancelLine    = 4,
+    WhiteBoardCmdTypePacketID      = 5,
+    WhiteBoardCmdTypeClearLines    = 6,
+    WhiteBoardCmdTypeClearLinesAck = 7,
+};
+
+static const NSTimeInterval CallerWaitSeconds = 40;
+static const NSTimeInterval SendCmdIntervalSeconds = 0.06;
+
+@interface NTESWhiteboardViewController ()<NIMRTSManagerDelegate, NTESTimerHolderDelegate>
+
+@property (strong, nonatomic) NTESWhiteboardDrawView *myDrawView;
+@property (strong, nonatomic) NTESWhiteboardDrawView *peerDrawView;
+@property (weak, nonatomic) IBOutlet UIButton *acceptButton;
+@property (weak, nonatomic) IBOutlet UIButton *rejectButton;
+@property (weak, nonatomic) IBOutlet UIView *headerView;
+
+@property (weak, nonatomic) IBOutlet UIView *footerView;
+@property (weak, nonatomic) IBOutlet UIButton *muteButton;
+@property (weak, nonatomic) IBOutlet UIButton *SpeakerButton;
+@property (weak, nonatomic) IBOutlet UIButton *cancelButton;
+@property (weak, nonatomic) IBOutlet UIButton *clearButton;
+
+@property (weak, nonatomic) IBOutlet UILabel *hintTextLabel;
+@property (weak, nonatomic) IBOutlet NIMAvatarImageView *avatarImageView;
+@property (weak, nonatomic) IBOutlet UILabel *nameTextLabel;
+@property (weak, nonatomic) IBOutlet UIButton *closeButton;
+@property (weak, nonatomic) IBOutlet UILabel *closeLabel;
+@property (weak, nonatomic) IBOutlet UIButton *cancelRequestButton;
+
+@property (copy, nonatomic) NSString *sessionID;
+@property (copy, nonatomic) NSString *peerID;
+@property (assign, nonatomic) NSUInteger types;
+@property (copy, nonatomic) NSString *info;
+@property (assign, nonatomic) BOOL isCaller;
+
+@property (assign, nonatomic) BOOL mute;
+@property (assign, nonatomic) BOOL speaker;
+
+@property (strong, nonatomic) NSMutableString *cmds;
+@property (strong, nonatomic) NSLock *cmdsLock;
+@property (strong, nonatomic) NTESTimerHolder *sendCmdsTimer;
+@property (assign, nonatomic) NSUInteger drawViewWidth;
+
+@property (strong, nonatomic) NTESTimerHolder *callerWaitingTimer;
+
+@property (assign, nonatomic) UInt64 refPacketID;
+
+@property (assign, nonatomic) BOOL audioConnected;
+@property (assign, nonatomic) BOOL dismissed;
+
+@property (assign, nonatomic) BOOL needTerminateRTS;
+
+@end
+
+@implementation NTESWhiteboardViewController
+
+#pragma mark - public methods
+- (id)initWithSessionID:(NSString *)sessionID
+                 peerID:(NSString *)peerID
+                  types:(NSUInteger)types
+                   info:(NSString *)info
+{
+    if (self = [super init]) {
+        _sessionID = sessionID;
+        _peerID = peerID;
+        _types = types;
+        _info = info;
+        _isCaller = _sessionID ? NO : YES;
+        _mute = YES;
+        _speaker = YES;
+        _cmds = [[NSMutableString alloc] initWithCapacity:1];
+        _cmdsLock = [[NSLock alloc] init];
+        _sendCmdsTimer = [[NTESTimerHolder alloc] init];
+        _needTerminateRTS = YES;
+    }
+    return self;
+
+}
+
+- (void)viewDidLoad {
+    [super viewDidLoad];
+    id<NIMRTSManager> manager = [NIMAVChatSDK sharedSDK].rtsManager;
+    [manager addDelegate:self];
+    [manager addDelegate:self];
+    [self updateButton];
+    
+    NIMKitInfo *info = [[NIMKit sharedKit] infoByUser:_peerID];
+    NSURL *avatarURL;
+    if (info.avatarUrlString.length) {
+        avatarURL = [NSURL URLWithString:info.avatarUrlString];
+    }
+    [_avatarImageView nim_setImageWithURL:avatarURL placeholderImage:info.avatarImage options:SDWebImageRetryFailed];
+    
+    [_nameTextLabel setText:[info showName]];
+    
+    self.view.backgroundColor = UIColorFromRGB(0xE9ECF0);
+    
+    [_nameTextLabel setTextColor:UIColorFromRGB(0x868686)];
+    [_hintTextLabel setTextColor:UIColorFromRGB(0x868686)];
+    
+    [_cancelRequestButton setBackgroundColor:UIColorFromRGB(0xF54A63)];
+    [_rejectButton setBackgroundColor:UIColorFromRGB(0xF54A63)];
+    [_acceptButton setBackgroundColor:UIColorFromRGB(0x0F91F2)];
+    [_cancelButton setBackgroundColor:UIColorFromRGB(0x0F91F2)];
+    [_clearButton setBackgroundColor:UIColorFromRGB(0xF54A63)];
+    [_headerView setBackgroundColor:UIColorFromRGB(0xFDFDFE)];
+    
+    _rejectButton.layer.cornerRadius = 8;
+    _acceptButton.layer.cornerRadius = 8;
+    _cancelRequestButton.layer.cornerRadius = 8;
+    _cancelButton.layer.cornerRadius = 5;
+    _clearButton.layer.cornerRadius = 5;
+    
+    _headerView.layer.borderWidth = 0.5;
+    _headerView.layer.borderColor = UIColorFromRGB(0x9FA1A5).CGColor;
+    _footerView.layer.borderWidth = 0.5;
+    _footerView.layer.borderColor = UIColorFromRGB(0x9FA1A5).CGColor;
+
+    if (_isCaller) {
+        [self switchToCallerView];
+        [self requestRTS];
+        [_hintTextLabel setText:@"正在邀请对方, 请稍后"];
+        _callerWaitingTimer = [[NTESTimerHolder alloc] init];
+        [_callerWaitingTimer startTimer:CallerWaitSeconds delegate:self repeats:NO];
+    }
+    else {
+        [_hintTextLabel setText:@"对方发起白板演示"];
+        [self switchToCalleeView];
+    }
+    [[UIApplication sharedApplication] setIdleTimerDisabled:YES];
+}
+
+- (void)viewWillAppear:(BOOL)animated
+{
+    [super viewWillAppear:animated];
+    [[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleDefault animated:animated];
+}
+- (void)dealloc
+{
+    [self termimateRTS];
+}
+
+#pragma mark - user interfaces
+- (IBAction)onRejectButtonPressed:(id)sender {
+    [self responseRTS:NO];
+    [self dismiss];
+}
+- (IBAction)onAcceptButtonPressed:(id)sender {
+    
+    if (_types & NIMRTSServiceAudio) {
+        UInt64 currentNetcall = [[NIMAVChatSDK sharedSDK].netCallManager currentCallID];
+        if (currentNetcall) {
+            [[NIMAVChatSDK sharedSDK].netCallManager hangup:currentNetcall];
+        }
+    }
+    
+    [self responseRTS:YES];
+    [self switchToWaitingConnectView];
+}
+- (IBAction)onMuteButtonPressed:(id)sender {
+    _mute = !_mute;
+    [self updateButton];
+    [[NIMAVChatSDK sharedSDK].rtsManager setMute:_mute];
+    [[NIMAVChatSDK sharedSDK].rtsManager sendRTSControl:_mute ? @"关闭了声音" : @"打开了声音" forSession:_sessionID];
+}
+- (IBAction)onSpeakerButtonPressed:(id)sender {
+    _speaker = !_speaker;
+    [self updateButton];
+    [[NIMAVChatSDK sharedSDK].rtsManager setSpeaker:_speaker];
+}
+- (IBAction)onCloseButtonPressed:(id)sender {
+    
+    UIActionSheet *sheet = [[UIActionSheet alloc] initWithTitle:@"退出后, 你将不再接收白板演示的消息内容" delegate:nil cancelButtonTitle:@"取消" destructiveButtonTitle:nil otherButtonTitles:@"退出", nil];
+    __weak typeof(self) wself = self;
+    [sheet showInView:self.view completionHandler:^(NSInteger index) {
+        if (index != sheet.cancelButtonIndex) {
+            [wself termimateRTS];
+            [wself dismissAfter:2];
+        }
+    }];
+}
+
+- (IBAction)onCancelButtonPressed:(id)sender {
+    [_myDrawView deleteLastLine];
+    [self sendWhiteboardCmd:WhiteBoardCmdTypeCancelLine];
+}
+
+- (IBAction)onClearLinesButtonPressed:(id)sender {
+    [self clearWhiteboard];
+    [self sendWhiteboardCmd:WhiteBoardCmdTypeClearLines];
+}
+
+- (IBAction)onCancelRequestButtonPressed:(id)sender
+{
+    [self termimateRTS];
+    [self dismiss];
+}
+
+
+#pragma mark - delegates
+#pragma mark NIMRTSManagerDelegate
+- (void)onRTSResponse:(NSString *)sessionID
+                 from:(NSString *)callee
+             accepted:(BOOL)accepted
+{
+    if (!accepted) {
+       NSLog(@"RTSDemo: peer rejected");
+        [self makeToast:@"对方拒绝了本次请求"];
+        [self dismiss];
+    }
+    else {
+        [self switchToWaitingConnectView];
+        [_callerWaitingTimer stopTimer];
+    }
+}
+
+- (void)onRTSTerminate:(NSString *)sessionID
+                    by:(NSString *)user
+{
+    NSLog(@"RTSDemo: peer terminated, session id %@, current session id %@", sessionID, _sessionID);
+    if (sessionID == _sessionID) {
+        [self makeToast:@"对方已离开"];
+        [self termimateRTS];
+        if ([[NTESDevice currentDevice] isInBackground]) {
+            [self dismiss];
+        }
+        else {
+            [self dismissAfter:2];
+        }
+    }
+}
+
+- (void)onRTSResponsedByOther:(NSString *)sessionID
+                     accepted:(BOOL)accepted
+{
+    NSLog(@"RTSDemo: responsed by other");
+    [self makeToast:[NSString stringWithFormat:@"已在其他端%@", accepted ? @"接受" : @"拒绝"]];
+    _needTerminateRTS = NO;
+    [self dismissAfter:2];
+
+
+}
+- (void)onRTS:(NSString *)sessionID
+      service:(NIMRTSService)type
+       status:(NIMRTSStatus)status
+        error:(NSError *)error
+{
+    NSLog(@"RTSDemo: service %zd status %zd", type, status);
+    if (type == NIMRTSServiceReliableTransfer) {
+        if (status == NIMRTSStatusConnect) {
+            [self switchToConnectedView];
+            [_sendCmdsTimer startTimer:SendCmdIntervalSeconds delegate:self repeats:YES];
+        }
+        else {
+            NSLog(@"已断开连接: %zd", error.code);
+            [self termimateRTS];
+            [self dismissAfter:1];
+        }
+    }
+    else if (type == NIMRTSServiceAudio) {
+        _audioConnected = (status == NIMRTSStatusConnect) ? YES : NO;
+        if (_audioConnected) {
+            [[NIMAVChatSDK sharedSDK].rtsManager setMute:_mute];
+        }
+        else {
+           NSLog(@"已断开音频服务: %zd", error.code);
+        }
+        if (![_footerView isHidden]) {
+            [_muteButton setHidden:!_audioConnected];
+        }
+    }
+}
+
+- (void)onRTSReceive:(NSString *)sessionID
+                data:(NSData *)data
+                from:(NSString *)user
+              withIn:(NIMRTSService)channel
+{
+    NSString *cmdString = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
+//    DDLogDebug(@"receive app data:%@", cmdString);
+    NSArray *cmds = [cmdString componentsSeparatedByString:@";"];
+    BOOL newLine = NO;
+    NSMutableArray *points = [[NSMutableArray alloc] init];
+    for (NSString *cmdString in cmds) {
+        if ([cmdString rangeOfString:@":"].length == 0) {
+            continue;
+        }
+        NSArray *cmd = [cmdString componentsSeparatedByCharactersInSet:[NSCharacterSet characterSetWithCharactersInString:@":,"]];
+        NSAssert(cmd.count == 3, @"Invalid cmd");
+        
+        NSInteger c = [cmd[0] integerValue];
+        NSArray *point = [NSArray arrayWithObjects:
+                          @([cmd[1] floatValue] * _drawViewWidth),
+                          @([cmd[2] floatValue] * _drawViewWidth), nil];
+        switch (c) {
+            case WhiteBoardCmdTypePointStart:
+                if ([points count] > 0) {
+                    [_peerDrawView addPoints:points isNewLine:newLine];
+                    points = [[NSMutableArray alloc] init];
+                }
+                newLine = YES;
+            case WhiteBoardCmdTypePointMove:
+            case WhiteBoardCmdTypePointEnd:
+                [points addObject:point];
+                break;
+            case WhiteBoardCmdTypeCancelLine:
+                [_peerDrawView deleteLastLine];
+                break;
+//            case WhiteBoardCmdTypePacketID:
+//                DDLogDebug(@"------receive cmd id %@", cmd[1]);
+//                break;
+            case WhiteBoardCmdTypeClearLines:
+                [self clearWhiteboard];
+                [self sendWhiteboardCmd:WhiteBoardCmdTypeClearLinesAck];
+                break;
+            case WhiteBoardCmdTypeClearLinesAck:
+                [self clearWhiteboard];
+                break;
+            default:
+                break;
+        }
+    }
+    if ([points count] > 0) {
+        [_peerDrawView addPoints:points isNewLine:newLine];
+    }
+}
+
+- (void)onRTSControl:(NSString *)controlInfo
+                from:(NSString *)user
+          forSession:(NSString *)sessionID
+{
+    if (sessionID == _sessionID) {
+        NSLog(@"Receive control info [%@] from %@", controlInfo, user);
+        [self.view.window makeToast:[NSString stringWithFormat:@"%@: %@", user, controlInfo]
+                          ];
+    }
+}
+
+- (void)onRTSRecordingInfo:(NIMRTSRecordingInfo *)info
+                forSession:(NSString *)sessionID
+{
+//    NSString *fileType = (info.service == NIMRTSServiceReliableTransfer) ? @"白板" : @"语音";
+//    [self sendMessage:[NTESSessionMsgConverter msgWithText:[NSString stringWithFormat:@"%@:%@", fileType, info.recordFileName]]];
+}
+
+
+#pragma mark UIResponder
+- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
+{
+    CGPoint p = [[touches anyObject] locationInView:_myDrawView];
+    [self onPointCollected:p type:WhiteBoardCmdTypePointStart];
+}
+
+- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
+{
+    CGPoint p = [[touches anyObject] locationInView:_myDrawView];
+    [self onPointCollected:p type:WhiteBoardCmdTypePointMove];
+}
+
+- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
+{
+    CGPoint p = [[touches anyObject] locationInView:_myDrawView];
+    [self onPointCollected:p type:WhiteBoardCmdTypePointEnd];
+}
+
+#pragma mark M80TimerHolderDelegate
+- (void)onNTESTimerFired:(NTESTimerHolder *)holder
+{
+    if (holder == _sendCmdsTimer) {
+        [self sendCmds];
+    }
+    else if (holder == _callerWaitingTimer) {
+        [self makeToast:@"对方未接受请求"];
+        [self termimateRTS];
+        [self dismissAfter:2];
+    }
+}
+
+#pragma mark - private methods
+- (void)requestRTS
+{
+    
+    NIMRTSOption *option = [[NIMRTSOption alloc] init];
+    
+    option.extendMessage = @"白板请求扩展信息";
+    option.apnsContent = @"邀请你加入白板会话";
+    option.apnsSound = @"video_chat_tip_receiver.aac";
+    [self fillUserSetting:option];
+    
+    __weak typeof(self) wself = self;
+    _sessionID = [[NIMAVChatSDK sharedSDK].rtsManager requestRTS:[NSArray arrayWithObject:_peerID]
+                                                        services:_types
+                                                          option:option
+                                                      completion:^(NSError *error, NSString *sessionID, UInt64 channelID)
+    {
+        if (error) {
+            NSLog(@"RTSDemo: send request failed %zd!!!", error.code);
+            NSString *errToast = (error.code == NIMRemoteErrorCodeCalleeOffline) ? @"对方不在线" : [NSString stringWithFormat:@"发起失败:%zd", error.code];
+            [wself makeToast:errToast];
+            [wself dismissAfter:2];
+        }
+        else {
+
+            NTESWhiteboardAttachment *attachment = [[NTESWhiteboardAttachment alloc] init];
+            attachment.flag = CustomWhiteboardFlagInvite;
+            NIMMessage *message = [NTESSessionMsgConverter msgWithWhiteboardAttachment:attachment];
+            [wself sendMessage:message];
+        }
+    }];
+}
+- (void)responseRTS:(BOOL)accepted
+{
+    NIMRTSOption *option = [[NIMRTSOption alloc] init];    
+    [self fillUserSetting:option];
+
+    __weak typeof(self) wself = self;
+    [[NIMAVChatSDK sharedSDK].rtsManager responseRTS:_sessionID
+                                              accept:accepted
+                                              option:option
+                                          completion:^(NSError *error, NSString *sessionID, UInt64 channelID) {
+                                              if (error) {
+                                                  [wself makeToast:[NSString stringWithFormat:@"接听失败:%zd", error.code]];
+                                                  
+                                                  [wself dismissAfter:2];
+                                              }
+                                              else {
+                                                  
+                                              }
+                                          }];
+}
+
+- (void)termimateRTS
+{
+    if (_needTerminateRTS) {
+        _needTerminateRTS = NO;
+        [[NIMAVChatSDK sharedSDK].rtsManager terminateRTS:_sessionID];
+    }
+}
+
+- (void)onPointCollected:(CGPoint)p type:(WhiteBoardCmdType)type
+{
+    //send to peer
+    NSString *cmd = [NSString stringWithFormat:@"%zd:%.3f,%.3f;", type, p.x/_drawViewWidth, p.y/_drawViewWidth];
+    [self addCmd:cmd];
+    
+    //local render
+    NSArray *point = [NSArray arrayWithObjects:@(p.x), @(p.y), nil];
+    [_myDrawView addPoints:[NSMutableArray arrayWithObjects:point, nil]
+                 isNewLine:(type == WhiteBoardCmdTypePointStart)];
+}
+
+- (void)addCmd:(NSString *)aCmd
+{
+    [_cmdsLock lock];
+    [_cmds appendString:aCmd];
+    [_cmdsLock unlock];
+    
+    if ([_cmds length] >= 30000) {
+        [self sendCmds];
+    }
+}
+
+- (void)sendCmds
+{
+    [_cmdsLock lock];
+    if ([_cmds length] > 0) {
+//        DDLogDebug(@"++++++send cmd id %llu", _refPacketID);
+        NSString *cmd = [NSString stringWithFormat:@"%zd:%llu,0;", WhiteBoardCmdTypePacketID, _refPacketID ++];
+        [_cmds appendString:cmd];
+        
+        [self sendRTSData:_cmds];
+        [_cmds setString:@""];
+    }
+    [_cmdsLock unlock];
+}
+
+
+- (void)sendRTSData:(NSString *)data
+{
+    BOOL success = [[NIMAVChatSDK sharedSDK].rtsManager sendRTSData:[data dataUsingEncoding:NSUTF8StringEncoding]
+                                                               from:_sessionID
+                                                                 to:(_isCaller ? nil : _peerID) //单播和广播发送示例
+                                                               with:NIMRTSServiceReliableTransfer];
+    if (!success) {
+        [self.view.window makeToast:@"数据发送失败"];
+    }
+}
+
+- (void)switchToCallerView
+{
+    [_rejectButton setHidden:YES];
+    [_acceptButton setHidden:YES];
+    [_cancelRequestButton setHidden:NO];
+    [_footerView setHidden:YES];
+    [_hintTextLabel setHidden:NO];
+    [_avatarImageView setHidden:NO];
+    [_nameTextLabel setHidden:NO];
+    [_closeButton setHidden:YES];
+    [_closeLabel setHidden:YES];
+}
+
+
+- (void)switchToCalleeView
+{
+    [_rejectButton setHidden:NO];
+    [_acceptButton setHidden:NO];
+    [_cancelRequestButton setHidden:YES];
+    [_footerView setHidden:YES];
+    [_hintTextLabel setHidden:NO];
+    [_avatarImageView setHidden:NO];
+    [_nameTextLabel setHidden:NO];
+    [_closeButton setHidden:YES];
+    [_closeLabel setHidden:YES];
+}
+
+- (void)switchToWaitingConnectView
+{
+    [_rejectButton setHidden:YES];
+    [_acceptButton setHidden:YES];
+    [_cancelRequestButton setHidden:YES];
+    [_footerView setHidden:YES];
+    [_hintTextLabel setHidden:NO];
+    [_avatarImageView setHidden:NO];
+    [_nameTextLabel setHidden:NO];
+    [_closeButton setHidden:NO];
+    [_closeLabel setHidden:NO];
+}
+
+- (void)switchToConnectedView
+{
+    [_rejectButton setHidden:YES];
+    [_acceptButton setHidden:YES];
+    [_cancelRequestButton setHidden:YES];
+    [_footerView setHidden:NO];
+    [_muteButton setHidden:!_audioConnected];
+    [self showDrawView];
+    [_hintTextLabel setHidden:YES];
+    [_avatarImageView setHidden:YES];
+    [_nameTextLabel setHidden:YES];
+    [_closeButton setHidden:NO];
+    [_closeLabel setHidden:NO];
+}
+
+- (void)showDrawView
+{
+    CGRect frame = self.view.bounds;
+    _drawViewWidth = frame.size.width;
+    
+    frame.origin.y = (frame.size.height - frame.size.width) / 2;
+    frame.size.height = _drawViewWidth;
+
+    _myDrawView = [[NTESWhiteboardDrawView alloc] initWithFrame:frame];
+    _myDrawView.layer.borderWidth = 0.5;
+    _myDrawView.layer.borderColor = UIColorFromRGB(0x9FA1A5).CGColor;
+    _myDrawView.backgroundColor = [UIColor whiteColor];
+    [_myDrawView setLineColor:[UIColor redColor]];
+    [self.view addSubview:_myDrawView];
+    
+    _peerDrawView = [[NTESWhiteboardDrawView alloc] initWithFrame:frame];
+    _peerDrawView.layer.borderWidth = 0.5;
+    _peerDrawView.layer.borderColor = UIColorFromRGB(0x9FA1A5).CGColor;
+    _peerDrawView.backgroundColor = [UIColor clearColor];
+    [_peerDrawView setLineColor:[UIColor greenColor]];
+    [self.view addSubview:_peerDrawView];
+}
+
+- (void)updateButton
+{
+    NSString *image = _mute? @"btn_whiteboard_sound_close" : @"btn_whiteboard_sound_open";
+    [_muteButton setImage:[UIImage imageNamed:image] forState:UIControlStateNormal];
+    [_muteButton setImage:[UIImage imageNamed:image] forState:UIControlStateHighlighted];
+}
+
+- (void)dismissAfter:(NSTimeInterval)seconds
+{
+    [self.view setUserInteractionEnabled:NO];
+    __weak typeof(self) wself = self;
+    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(seconds * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
+        [wself dismiss];
+    });
+}
+
+- (void)dismiss{
+    if (_dismissed) {
+        return;
+    }
+    _dismissed = YES;
+    id<NIMRTSManager> manager = [NIMAVChatSDK sharedSDK].rtsManager;
+    [manager removeDelegate:self];
+    
+    NTESWhiteboardAttachment *attachment = [[NTESWhiteboardAttachment alloc] init];
+    attachment.flag = CustomWhiteboardFlagClose;
+    NIMMessage *message = [NTESSessionMsgConverter msgWithWhiteboardAttachment:attachment];
+    [[[NIMSDK sharedSDK] conversationManager] saveMessage:message
+                                               forSession:[NIMSession session:_peerID type:NIMSessionTypeP2P]
+                                                           completion:nil];
+    [[UIApplication sharedApplication] setIdleTimerDisabled:NO];
+    [self dismissViewControllerAnimated:NO completion:^{
+        [[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleDefault animated:NO];
+    }];
+}
+
+- (void)makeToast:(NSString *)toast
+{
+    [self.view.window makeToast:toast ];
+}
+
+- (void)sendMessage:(NIMMessage *)message
+{
+    [[[NIMSDK sharedSDK] chatManager] sendMessage:message
+                                        toSession:[NIMSession session:_peerID type:NIMSessionTypeP2P]
+                                            error:nil];
+}
+
+//发送纯命令, 不带参数
+- (void)sendWhiteboardCmd:(WhiteBoardCmdType)cmd
+{
+    NSString *cmdString = [NSString stringWithFormat:@"%zd:0,0;", cmd];
+    [self addCmd:cmdString];
+}
+
+- (void)clearWhiteboard
+{
+    [_myDrawView clear];
+    [_peerDrawView clear];
+}
+
+- (UIInterfaceOrientationMask)supportedInterfaceOrientations{
+    return UIInterfaceOrientationMaskPortrait;
+}
+
+- (void)fillUserSetting:(NIMRTSOption *)option
+{
+    option.serverRecordAudio = [[NTESBundleSetting sharedConfig] serverRecordAudio];
+    option.serverRecordData = [[NTESBundleSetting sharedConfig] serverRecordWhiteboardData];
+    option.autoDeactivateAudioSession = [[NTESBundleSetting sharedConfig] autoDeactivateAudioSession];
+    option.audioDenoise = [[NTESBundleSetting sharedConfig] audioDenoise];
+    option.voiceDetect = [[NTESBundleSetting sharedConfig] voiceDetect];
+    option.preferHDAudio =  [[NTESBundleSetting sharedConfig] voiceDetect];
+}
+@end
@@ -0,0 +1,262 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="8191" systemVersion="14F27" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES">
+    <dependencies>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="8154"/>
+        <capability name="Alignment constraints with different attributes" minToolsVersion="5.1"/>
+    </dependencies>
+    <objects>
+        <placeholder placeholderIdentifier="IBFilesOwner" id="-1" userLabel="File's Owner" customClass="NTESWhiteboardViewController">
+            <connections>
+                <outlet property="acceptButton" destination="7vu-aS-TjX" id="R3w-Oy-X5i"/>
+                <outlet property="avatarImageView" destination="yZH-Ut-wDn" id="Esj-AF-Z0A"/>
+                <outlet property="cancelButton" destination="q6D-wx-SjQ" id="X4I-3K-VJM"/>
+                <outlet property="cancelRequestButton" destination="8WR-3R-AQN" id="ZLa-ry-GE6"/>
+                <outlet property="clearButton" destination="ni9-uq-Bos" id="uQk-Ik-yRu"/>
+                <outlet property="closeButton" destination="tqS-HJ-chu" id="SuD-Mr-RKw"/>
+                <outlet property="closeLabel" destination="Yku-Bo-Ahs" id="RKB-jE-rDG"/>
+                <outlet property="footerView" destination="GUl-6b-I66" id="AOO-HO-ppm"/>
+                <outlet property="headerView" destination="IA5-en-Rvi" id="hg0-cn-xdf"/>
+                <outlet property="hintTextLabel" destination="1xG-NA-CJG" id="EI2-SH-5r2"/>
+                <outlet property="muteButton" destination="uoe-LB-bRb" id="mNZ-wR-ah7"/>
+                <outlet property="nameTextLabel" destination="duf-3o-HXh" id="OpM-v4-Gc5"/>
+                <outlet property="rejectButton" destination="fKU-v5-Wvf" id="dya-yO-R4f"/>
+                <outlet property="view" destination="i5M-Pr-FkT" id="sfx-zR-JGt"/>
+            </connections>
+        </placeholder>
+        <placeholder placeholderIdentifier="IBFirstResponder" id="-2" customClass="UIResponder"/>
+        <view clearsContextBeforeDrawing="NO" contentMode="scaleToFill" id="i5M-Pr-FkT">
+            <rect key="frame" x="0.0" y="0.0" width="320" height="568"/>
+            <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+            <subviews>
+                <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="8WR-3R-AQN" userLabel="取消呼叫">
+                    <rect key="frame" x="5" y="514" width="310" height="46"/>
+                    <color key="backgroundColor" red="1" green="0.0" blue="0.0" alpha="1" colorSpace="calibratedRGB"/>
+                    <constraints>
+                        <constraint firstAttribute="height" constant="46" id="8vf-AC-49f"/>
+                    </constraints>
+                    <fontDescription key="fontDescription" type="system" pointSize="24"/>
+                    <state key="normal" title="取消">
+                        <color key="titleColor" red="1" green="1" blue="1" alpha="1" colorSpace="calibratedRGB"/>
+                        <color key="titleShadowColor" white="0.5" alpha="1" colorSpace="calibratedWhite"/>
+                    </state>
+                    <connections>
+                        <action selector="onCancelRequestButtonPressed:" destination="-1" eventType="touchUpInside" id="pv6-i6-foO"/>
+                    </connections>
+                </button>
+                <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="fKU-v5-Wvf">
+                    <rect key="frame" x="5" y="514" width="152" height="46"/>
+                    <color key="backgroundColor" red="1" green="0.0" blue="0.0" alpha="1" colorSpace="calibratedRGB"/>
+                    <constraints>
+                        <constraint firstAttribute="width" constant="150" id="1TI-y8-9MP"/>
+                        <constraint firstAttribute="height" constant="46" id="Ud5-2v-LDD"/>
+                    </constraints>
+                    <fontDescription key="fontDescription" type="system" pointSize="24"/>
+                    <state key="normal" title="拒绝">
+                        <color key="titleColor" red="1" green="1" blue="1" alpha="1" colorSpace="calibratedRGB"/>
+                        <color key="titleShadowColor" white="0.5" alpha="1" colorSpace="calibratedWhite"/>
+                    </state>
+                    <variation key="default">
+                        <mask key="constraints">
+                            <exclude reference="1TI-y8-9MP"/>
+                        </mask>
+                    </variation>
+                    <connections>
+                        <action selector="onRejectButtonPressed:" destination="-1" eventType="touchUpInside" id="is6-bB-sU1"/>
+                    </connections>
+                </button>
+                <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="7vu-aS-TjX">
+                    <rect key="frame" x="163" y="514" width="152" height="46"/>
+                    <color key="backgroundColor" red="0.0" green="0.0" blue="1" alpha="1" colorSpace="calibratedRGB"/>
+                    <constraints>
+                        <constraint firstAttribute="width" constant="150" id="G67-l1-uMF"/>
+                        <constraint firstAttribute="height" constant="46" id="v6C-5o-hx2"/>
+                    </constraints>
+                    <fontDescription key="fontDescription" type="system" pointSize="24"/>
+                    <state key="normal" title="接受">
+                        <color key="titleColor" red="1" green="1" blue="1" alpha="1" colorSpace="calibratedRGB"/>
+                        <color key="titleShadowColor" white="0.5" alpha="1" colorSpace="calibratedWhite"/>
+                    </state>
+                    <variation key="default">
+                        <mask key="constraints">
+                            <exclude reference="G67-l1-uMF"/>
+                        </mask>
+                    </variation>
+                    <connections>
+                        <action selector="onAcceptButtonPressed:" destination="-1" eventType="touchUpInside" id="4Z7-M8-6ud"/>
+                    </connections>
+                </button>
+                <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="HintText" textAlignment="center" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="1xG-NA-CJG" userLabel="HintTextLabel">
+                    <rect key="frame" x="0.0" y="341" width="320" height="17"/>
+                    <fontDescription key="fontDescription" type="system" pointSize="14"/>
+                    <color key="textColor" red="0.0" green="0.0" blue="0.0" alpha="1" colorSpace="calibratedRGB"/>
+                    <nil key="highlightedColor"/>
+                </label>
+                <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="NameText" textAlignment="center" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="duf-3o-HXh" userLabel="NameTextLabel">
+                    <rect key="frame" x="0.0" y="249" width="320" height="17"/>
+                    <fontDescription key="fontDescription" type="system" pointSize="14"/>
+                    <color key="textColor" red="0.0" green="0.0" blue="0.0" alpha="1" colorSpace="calibratedRGB"/>
+                    <nil key="highlightedColor"/>
+                </label>
+                <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="IA5-en-Rvi" userLabel="HeaderView">
+                    <rect key="frame" x="-1" y="-1" width="321" height="65"/>
+                    <subviews>
+                        <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="白板" textAlignment="center" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="Djc-nn-Ye7">
+                            <rect key="frame" x="136" y="35" width="50" height="17"/>
+                            <constraints>
+                                <constraint firstAttribute="width" constant="50" id="KsU-So-c87"/>
+                                <constraint firstAttribute="height" constant="17" id="owz-vj-1c7"/>
+                            </constraints>
+                            <fontDescription key="fontDescription" type="system" pointSize="17"/>
+                            <color key="textColor" red="0.0" green="0.0" blue="0.0" alpha="1" colorSpace="calibratedRGB"/>
+                            <nil key="highlightedColor"/>
+                        </label>
+                        <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="fill" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="tqS-HJ-chu" userLabel="关闭">
+                            <rect key="frame" x="258" y="0.0" width="64" height="64"/>
+                            <constraints>
+                                <constraint firstAttribute="height" constant="64" id="IOF-wp-Dss"/>
+                                <constraint firstAttribute="width" constant="64" id="OmS-vk-d5L"/>
+                            </constraints>
+                            <fontDescription key="fontDescription" type="system" pointSize="17"/>
+                            <inset key="contentEdgeInsets" minX="0.0" minY="18" maxX="0.0" maxY="0.0"/>
+                            <state key="normal">
+                                <color key="titleColor" red="0.0" green="0.0" blue="0.0" alpha="1" colorSpace="calibratedRGB"/>
+                                <color key="titleShadowColor" white="0.5" alpha="1" colorSpace="calibratedWhite"/>
+                            </state>
+                            <connections>
+                                <action selector="onCloseButtonPressed:" destination="-1" eventType="touchUpInside" id="b91-xv-vo1"/>
+                            </connections>
+                        </button>
+                        <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="关闭" textAlignment="right" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="Yku-Bo-Ahs">
+                            <rect key="frame" x="263" y="35" width="50" height="17"/>
+                            <constraints>
+                                <constraint firstAttribute="height" constant="17" id="GWd-86-NJ5"/>
+                                <constraint firstAttribute="width" constant="50" id="bz3-FL-NnI"/>
+                            </constraints>
+                            <fontDescription key="fontDescription" type="system" pointSize="14"/>
+                            <color key="textColor" red="0.59999999999999998" green="0.59999999999999998" blue="0.59999999999999998" alpha="1" colorSpace="calibratedRGB"/>
+                            <nil key="highlightedColor"/>
+                        </label>
+                    </subviews>
+                    <color key="backgroundColor" white="1" alpha="1" colorSpace="calibratedWhite"/>
+                    <constraints>
+                        <constraint firstAttribute="height" constant="65" id="7F6-1y-w4a"/>
+                        <constraint firstAttribute="trailing" secondItem="tqS-HJ-chu" secondAttribute="trailing" constant="-1" id="8Gd-5o-yMp"/>
+                        <constraint firstItem="Yku-Bo-Ahs" firstAttribute="top" secondItem="IA5-en-Rvi" secondAttribute="top" constant="35" id="9Sb-f5-OEX"/>
+                        <constraint firstAttribute="trailing" secondItem="Yku-Bo-Ahs" secondAttribute="trailing" constant="8" id="Gfw-gZ-KQL"/>
+                        <constraint firstItem="tqS-HJ-chu" firstAttribute="top" secondItem="IA5-en-Rvi" secondAttribute="top" id="Szv-Ev-ug6"/>
+                        <constraint firstItem="Djc-nn-Ye7" firstAttribute="top" secondItem="IA5-en-Rvi" secondAttribute="top" constant="35" id="cco-fp-RG1"/>
+                        <constraint firstAttribute="centerX" secondItem="Djc-nn-Ye7" secondAttribute="centerX" id="j0f-XZ-3qL"/>
+                    </constraints>
+                </view>
+                <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="yZH-Ut-wDn" userLabel="AvatarImageView" customClass="NIMAvatarImageView">
+                    <rect key="frame" x="120" y="154" width="80" height="80"/>
+                    <color key="backgroundColor" white="0.66666666666666663" alpha="1" colorSpace="calibratedWhite"/>
+                    <constraints>
+                        <constraint firstAttribute="width" constant="80" id="XZ1-Nn-d8o"/>
+                        <constraint firstAttribute="height" constant="80" id="nka-HF-n6E"/>
+                    </constraints>
+                </view>
+                <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="GUl-6b-I66" userLabel="FooterView">
+                    <rect key="frame" x="-1" y="498" width="322" height="71"/>
+                    <subviews>
+                        <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="uoe-LB-bRb" userLabel="声音">
+                            <rect key="frame" x="0.0" y="0.0" width="65" height="71"/>
+                            <constraints>
+                                <constraint firstAttribute="width" constant="65" id="hPt-Pl-dze"/>
+                            </constraints>
+                            <state key="normal" image="btn_whiteboard_sound_open">
+                                <color key="titleColor" red="1" green="0.89332819845508771" blue="0.42760693648734971" alpha="1" colorSpace="calibratedRGB"/>
+                                <color key="titleShadowColor" white="0.5" alpha="1" colorSpace="calibratedWhite"/>
+                            </state>
+                            <connections>
+                                <action selector="onMuteButtonPressed:" destination="-1" eventType="touchUpInside" id="Hoo-bH-NSQ"/>
+                            </connections>
+                        </button>
+                        <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="ni9-uq-Bos">
+                            <rect key="frame" x="247" y="20" width="60" height="31"/>
+                            <color key="backgroundColor" red="0.0" green="0.0" blue="1" alpha="1" colorSpace="calibratedRGB"/>
+                            <constraints>
+                                <constraint firstAttribute="width" constant="60" id="AaH-kr-7li"/>
+                            </constraints>
+                            <fontDescription key="fontDescription" type="system" pointSize="17"/>
+                            <state key="normal" title="清空">
+                                <color key="titleColor" red="1" green="1" blue="1" alpha="1" colorSpace="calibratedRGB"/>
+                                <color key="titleShadowColor" white="0.5" alpha="1" colorSpace="calibratedWhite"/>
+                            </state>
+                            <connections>
+                                <action selector="onClearLinesButtonPressed:" destination="-1" eventType="touchUpInside" id="UQf-Rf-rIT"/>
+                            </connections>
+                        </button>
+                        <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="q6D-wx-SjQ">
+                            <rect key="frame" x="172" y="20" width="60" height="31"/>
+                            <color key="backgroundColor" red="0.0" green="0.0" blue="1" alpha="1" colorSpace="calibratedRGB"/>
+                            <constraints>
+                                <constraint firstAttribute="width" constant="60" id="MCA-eI-rgJ"/>
+                            </constraints>
+                            <fontDescription key="fontDescription" type="system" pointSize="17"/>
+                            <state key="normal" title="上一步">
+                                <color key="titleColor" red="1" green="1" blue="1" alpha="1" colorSpace="calibratedRGB"/>
+                                <color key="titleShadowColor" white="0.5" alpha="1" colorSpace="calibratedWhite"/>
+                            </state>
+                            <connections>
+                                <action selector="onCancelButtonPressed:" destination="-1" eventType="touchUpInside" id="2M3-Hj-Hbf"/>
+                            </connections>
+                        </button>
+                    </subviews>
+                    <color key="backgroundColor" white="1" alpha="1" colorSpace="calibratedWhite"/>
+                    <constraints>
+                        <constraint firstAttribute="bottom" secondItem="uoe-LB-bRb" secondAttribute="bottom" id="7Jm-zL-vGJ"/>
+                        <constraint firstAttribute="bottom" secondItem="ni9-uq-Bos" secondAttribute="bottom" constant="20" id="DGB-fu-r0F"/>
+                        <constraint firstAttribute="bottom" secondItem="q6D-wx-SjQ" secondAttribute="bottom" constant="20" id="Dwt-sB-ZY9"/>
+                        <constraint firstItem="uoe-LB-bRb" firstAttribute="top" secondItem="GUl-6b-I66" secondAttribute="top" id="IH2-7n-F6K"/>
+                        <constraint firstAttribute="trailing" secondItem="ni9-uq-Bos" secondAttribute="trailing" constant="15" id="SLa-Su-IBf"/>
+                        <constraint firstItem="q6D-wx-SjQ" firstAttribute="leading" secondItem="ni9-uq-Bos" secondAttribute="trailing" constant="20" id="SkQ-d3-cNz"/>
+                        <constraint firstItem="uoe-LB-bRb" firstAttribute="leading" secondItem="GUl-6b-I66" secondAttribute="leading" id="X40-Ec-WBk"/>
+                        <constraint firstAttribute="trailing" secondItem="q6D-wx-SjQ" secondAttribute="trailing" constant="15" id="YcD-0c-hXF"/>
+                        <constraint firstAttribute="height" constant="71" id="dkZ-qz-tIo"/>
+                        <constraint firstItem="ni9-uq-Bos" firstAttribute="top" secondItem="GUl-6b-I66" secondAttribute="top" constant="20" id="lbP-VR-MeO"/>
+                        <constraint firstItem="q6D-wx-SjQ" firstAttribute="top" secondItem="GUl-6b-I66" secondAttribute="top" constant="20" id="lsP-v8-eH2"/>
+                        <constraint firstItem="ni9-uq-Bos" firstAttribute="leading" secondItem="q6D-wx-SjQ" secondAttribute="trailing" constant="15" id="sxo-P1-X0p"/>
+                    </constraints>
+                    <variation key="default">
+                        <mask key="constraints">
+                            <exclude reference="SkQ-d3-cNz"/>
+                            <exclude reference="YcD-0c-hXF"/>
+                        </mask>
+                    </variation>
+                </view>
+            </subviews>
+            <color key="backgroundColor" red="0.80000001192092896" green="0.80000001192092896" blue="0.80000001192092896" alpha="1" colorSpace="calibratedRGB"/>
+            <constraints>
+                <constraint firstAttribute="trailing" secondItem="7vu-aS-TjX" secondAttribute="trailing" constant="5" id="4Fx-lT-S43"/>
+                <constraint firstItem="yZH-Ut-wDn" firstAttribute="top" secondItem="IA5-en-Rvi" secondAttribute="bottom" constant="90" id="6Je-P7-pE7"/>
+                <constraint firstAttribute="trailing" secondItem="IA5-en-Rvi" secondAttribute="trailing" id="BZa-Za-DeS"/>
+                <constraint firstItem="1xG-NA-CJG" firstAttribute="leading" secondItem="i5M-Pr-FkT" secondAttribute="leading" id="Bbq-Aj-MD7"/>
+                <constraint firstItem="IA5-en-Rvi" firstAttribute="top" secondItem="i5M-Pr-FkT" secondAttribute="top" constant="-1" id="FPT-ns-wKV"/>
+                <constraint firstItem="1xG-NA-CJG" firstAttribute="centerX" secondItem="yZH-Ut-wDn" secondAttribute="centerX" id="HiP-Vr-0dP"/>
+                <constraint firstItem="GUl-6b-I66" firstAttribute="leading" secondItem="i5M-Pr-FkT" secondAttribute="leading" constant="-1" id="IDg-DC-6vQ"/>
+                <constraint firstItem="duf-3o-HXh" firstAttribute="leading" secondItem="i5M-Pr-FkT" secondAttribute="leading" id="IVf-kH-uGV"/>
+                <constraint firstAttribute="trailing" secondItem="GUl-6b-I66" secondAttribute="trailing" constant="-1" id="KHE-KO-kKy"/>
+                <constraint firstAttribute="trailing" secondItem="duf-3o-HXh" secondAttribute="trailing" id="Mgp-fK-tbH"/>
+                <constraint firstAttribute="bottom" secondItem="7vu-aS-TjX" secondAttribute="bottom" constant="8" id="PAw-oT-rsl"/>
+                <constraint firstItem="duf-3o-HXh" firstAttribute="top" secondItem="yZH-Ut-wDn" secondAttribute="bottom" constant="15" id="Swt-7Z-8Dj"/>
+                <constraint firstItem="IA5-en-Rvi" firstAttribute="leading" secondItem="i5M-Pr-FkT" secondAttribute="leading" constant="-1" id="UAl-kb-h5e"/>
+                <constraint firstItem="yZH-Ut-wDn" firstAttribute="centerX" secondItem="fKU-v5-Wvf" secondAttribute="trailing" constant="3" id="bpO-Pu-8iZ"/>
+                <constraint firstItem="8WR-3R-AQN" firstAttribute="leading" secondItem="i5M-Pr-FkT" secondAttribute="leading" constant="5" id="gG3-QQ-yjf"/>
+                <constraint firstAttribute="bottom" secondItem="fKU-v5-Wvf" secondAttribute="bottom" constant="8" id="hWQ-JO-WMn"/>
+                <constraint firstItem="fKU-v5-Wvf" firstAttribute="leading" secondItem="i5M-Pr-FkT" secondAttribute="leading" constant="5" id="izZ-Ns-1Qa"/>
+                <constraint firstItem="yZH-Ut-wDn" firstAttribute="centerX" secondItem="7vu-aS-TjX" secondAttribute="leading" constant="-3" id="mpJ-Ag-PSJ"/>
+                <constraint firstItem="fKU-v5-Wvf" firstAttribute="bottom" secondItem="8WR-3R-AQN" secondAttribute="bottom" id="o4Q-ew-KRJ"/>
+                <constraint firstAttribute="trailing" secondItem="8WR-3R-AQN" secondAttribute="trailing" constant="5" id="sjW-Pb-n1t"/>
+                <constraint firstAttribute="trailing" secondItem="1xG-NA-CJG" secondAttribute="trailing" id="sy0-Ua-l1a"/>
+                <constraint firstItem="1xG-NA-CJG" firstAttribute="top" secondItem="duf-3o-HXh" secondAttribute="bottom" constant="75" id="uSm-AM-3Be"/>
+                <constraint firstAttribute="bottom" secondItem="GUl-6b-I66" secondAttribute="bottom" constant="-1" id="ufz-kB-62Q"/>
+            </constraints>
+            <simulatedScreenMetrics key="simulatedDestinationMetrics" type="retina4"/>
+        </view>
+    </objects>
+    <resources>
+        <image name="btn_whiteboard_sound_open" width="35" height="35"/>
+    </resources>
+</document>
@@ -0,0 +1,21 @@
+//
+//  WhiteBoardDrawView.h
+//  NIM
+//
+//  Created by 高峰 on 15/7/1.
+//  Copyright (c) 2015年 Netease. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+
+@interface NTESWhiteboardDrawView : UIView
+
+- (void)setLineColor:(UIColor *)color;
+
+- (void)addPoints:(NSMutableArray *)points isNewLine:(BOOL)newLine;
+
+- (void)deleteLastLine;
+
+- (void)clear;
+
+@end
@@ -0,0 +1,150 @@
+//
+//  WhiteBoardDrawView.m
+//  NIM
+//
+//  Created by 高峰 on 15/7/1.
+//  Copyright (c) 2015年 Netease. All rights reserved.
+//
+
+#import "NTESWhiteboardDrawView.h"
+#import <QuartzCore/QuartzCore.h>
+#import "NTESCADisplayLinkHolder.h"
+
+@interface NTESWhiteboardDrawView()<NTESCADisplayLinkHolderDelegate>
+
+@property(nonatomic, strong)NSMutableArray *myLines;
+@property(nonatomic, assign)BOOL shouldDraw;
+
+@property(nonatomic, strong)NTESCADisplayLinkHolder *displayLinkHolder;
+
+@end
+
+@implementation NTESWhiteboardDrawView
+
+#pragma mark - public methods
+- (id)initWithFrame:(CGRect)frame
+{
+    if (self = [super initWithFrame:frame]) {
+        _myLines = [[NSMutableArray alloc] init];
+        
+        CAShapeLayer *shapeLayer = (CAShapeLayer *)self.layer;
+        shapeLayer.strokeColor = [UIColor blackColor].CGColor;
+        shapeLayer.fillColor = [UIColor clearColor].CGColor;
+        shapeLayer.lineJoin = kCALineJoinRound;
+        shapeLayer.lineCap = kCALineCapRound;
+        shapeLayer.lineWidth = 2;
+        shapeLayer.masksToBounds = YES;
+        
+        _displayLinkHolder = [[NTESCADisplayLinkHolder alloc] init];
+        [_displayLinkHolder setFrameInterval:3];
+        [_displayLinkHolder startCADisplayLinkWithDelegate:self];
+    }
+    return self;
+}
+
+-(void)dealloc
+{
+    [_displayLinkHolder stop];
+}
+
+ (Class)layerClass
+{
+    return [CAShapeLayer class];
+}
+
+- (void)setLineColor:(UIColor *)color
+{
+    CAShapeLayer *shapeLayer = (CAShapeLayer *)self.layer;
+    shapeLayer.strokeColor = color.CGColor;
+}
+
+- (void)addPoints:(NSMutableArray *)points isNewLine:(BOOL)newLine
+{
+    __weak typeof(self) wself = self;
+    dispatch_async(dispatch_get_main_queue(), ^{
+        [wself addPoints:points toLines:[wself myLines] isNewLine:newLine];
+    });
+}
+
+- (void)deleteLastLine
+{
+    __weak typeof(self) wself = self;
+    dispatch_async(dispatch_get_main_queue(), ^{
+        [wself deleteLastLine:[wself myLines]];
+    });
+
+}
+
+- (void)deleteAllLines
+{
+    __weak typeof(self) wself = self;
+    dispatch_async(dispatch_get_main_queue(), ^{
+        [wself deleteAllLines:[wself myLines]];
+    });
+}
+
+- (void)clear
+{
+    [self deleteAllLines];
+}
+
+#pragma mark - private methods
+- (void)addPoints:(NSMutableArray *)points
+          toLines:(NSMutableArray *)lines
+        isNewLine:(BOOL)newLine
+{
+    if (newLine) {
+        [lines addObject:points];
+    }
+    else if (lines.count == 0) {
+        [lines addObject:points];
+    }
+    else {
+        NSMutableArray *lastLine = [lines lastObject];
+        [lastLine addObjectsFromArray:points];
+    }
+    _shouldDraw = YES;
+}
+
+-(void)deleteLastLine:(NSMutableArray *)lines
+{
+    [lines removeLastObject];
+    _shouldDraw = YES;
+}
+
+-(void)deleteAllLines:(NSMutableArray *)lines
+{
+    [lines removeAllObjects];
+    _shouldDraw = YES;
+}
+
+- (void)onDisplayLinkFire:(NTESCADisplayLinkHolder *)holder
+                 duration:(NSTimeInterval)duration
+              displayLink:(CADisplayLink *)displayLink
+{
+    if (!_shouldDraw) {
+        return;
+    }
+    UIBezierPath *path = [[UIBezierPath alloc] init];
+    NSUInteger linesCount = _myLines.count;
+    for (NSUInteger i = 0 ; i < linesCount; i ++) {
+        NSArray *line = [_myLines objectAtIndex:i];
+        NSUInteger pointsCount = line.count;
+        for (NSUInteger j = 0 ; j < pointsCount; j ++) {
+            NSArray *point = [line objectAtIndex:j];
+            CGPoint p = CGPointMake([point[0] floatValue], [point[1] floatValue]);
+            if (j == 0) {
+                [path moveToPoint:p];
+            }
+            else {
+                [path addLineToPoint:p];
+            }
+        }
+    }
+    
+    ((CAShapeLayer *)self.layer).path = path.CGPath;
+    _shouldDraw = NO;
+}
+
+
+@end