Add the ability to present room chat while in a call.

Signed-off-by: Ivan Sein <ivan@nextcloud.com>

VideoCalls/CallViewController.m

@@ -41,6 +41,7 @@ typedef NS_ENUM(NSInteger, CallState) {
     NSMutableDictionary *_videoRenderersDict;
     NSMutableDictionary *_screenRenderersDict;
     NCCallController *_callController;
+    NCChatViewController *_chatViewController;
     ARDCaptureController *_captureController;
     UIView <RTCVideoRenderer> *_screenView;
     CGSize _screensharingSize;
@@ -60,6 +61,7 @@ typedef NS_ENUM(NSInteger, CallState) {
 @property (nonatomic, strong) IBOutlet UIButton *switchCameraButton;
 @property (nonatomic, strong) IBOutlet UIButton *hangUpButton;
 @property (nonatomic, strong) IBOutlet UIButton *videoCallButton;
+@property (nonatomic, strong) IBOutlet UIButton *chatButton;
 @property (nonatomic, strong) IBOutlet UICollectionView *collectionView;
 @property (nonatomic, strong) IBOutlet UICollectionViewFlowLayout *flowLayout;
 
@@ -119,6 +121,7 @@ typedef NS_ENUM(NSInteger, CallState) {
     [self.videoDisableButton.layer setCornerRadius:30.0f];
     [self.hangUpButton.layer setCornerRadius:30.0f];
     [self.videoCallButton.layer setCornerRadius:30.0f];
+    [self.chatButton.layer setCornerRadius:30.0f];
     [self.closeScreensharingButton.layer setCornerRadius:16.0f];
     
     self.audioMuteButton.accessibilityLabel = @"Microphone";
@@ -134,6 +137,8 @@ typedef NS_ENUM(NSInteger, CallState) {
     self.hangUpButton.accessibilityHint = @"Doble tap to hang up the call";
     self.videoCallButton.accessibilityLabel = @"Camera";
     self.videoCallButton.accessibilityHint = @"Doble tap to upgrade this voice call to a video call";
+    self.chatButton.accessibilityLabel = @"Chat";
+    self.chatButton.accessibilityHint = @"Doble tap to show call's chat";
     
     [self adjustButtonsConainer];
     
@@ -715,6 +720,32 @@ typedef NS_ENUM(NSInteger, CallState) {
     [self hangup];
 }
 
+- (IBAction)chatButtonPressed:(id)sender
+{
+    [self toggleChatView];
+}
+
+- (void)toggleChatView
+{
+    if (!_chatViewController) {
+        _chatViewController = [[NCChatViewController alloc] initForRoom:_room];
+        [self addChildViewController:_chatViewController];
+        
+        [self.view addSubview:_chatViewController.view];
+        _chatViewController.view.frame = self.view.bounds;
+        _chatViewController.view.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
+        [_chatViewController didMoveToParentViewController:self];
+        
+        [self.view bringSubviewToFront:_chatButton];
+    } else {
+        [_chatViewController willMoveToParentViewController:nil];
+        [_chatViewController.view removeFromSuperview];
+        [_chatViewController removeFromParentViewController];
+        
+        _chatViewController = nil;
+    }
+}
+
 - (void)finishCall
 {
     _callController = nil;

VideoCalls/CallViewController.xib

@@ -15,6 +15,7 @@
                 <outlet property="audioMuteButton" destination="kDR-Ds-I7B" id="9NJ-iO-JMY"/>
                 <outlet property="avatarBackgroundImageView" destination="H1v-6g-V21" id="ASI-wy-zPa"/>
                 <outlet property="buttonsContainerView" destination="ybF-7q-HlR" id="8Mk-fB-QML"/>
+                <outlet property="chatButton" destination="iRE-oh-vZ4" id="EfP-bT-Oeo"/>
                 <outlet property="closeScreensharingButton" destination="N0N-Ny-Aeg" id="NrD-JV-Hec"/>
                 <outlet property="collectionView" destination="aUh-Z0-hO6" id="jmc-BV-dTa"/>
                 <outlet property="hangUpButton" destination="Rl8-bS-FJ5" id="jNg-Ly-6wz"/>
@@ -80,6 +81,15 @@
                     <color key="backgroundColor" white="0.0" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
                     <viewLayoutGuide key="safeArea" id="j53-tu-e0T"/>
                 </view>
+                <button opaque="NO" contentMode="scaleToFill" fixedFrame="YES" contentHorizontalAlignment="center" contentVerticalAlignment="center" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="iRE-oh-vZ4">
+                    <rect key="frame" x="307" y="68" width="60" height="60"/>
+                    <autoresizingMask key="autoresizingMask" flexibleMinX="YES" flexibleMaxY="YES"/>
+                    <color key="backgroundColor" red="0.60784313729999995" green="0.60784313729999995" blue="0.60784313729999995" alpha="0.74973244859999999" colorSpace="custom" customColorSpace="sRGB"/>
+                    <state key="normal" image="chat"/>
+                    <connections>
+                        <action selector="chatButtonPressed:" destination="-1" eventType="touchUpInside" id="KhR-dg-Tez"/>
+                    </connections>
+                </button>
                 <view contentMode="scaleToFill" fixedFrame="YES" translatesAutoresizingMaskIntoConstraints="NO" id="ybF-7q-HlR">
                     <rect key="frame" x="37" y="477" width="300" height="170"/>
                     <autoresizingMask key="autoresizingMask" flexibleMinX="YES" flexibleMaxX="YES" flexibleMinY="YES"/>
@@ -159,6 +169,7 @@
     </objects>
     <resources>
         <image name="audio" width="24" height="24"/>
+        <image name="chat" width="24" height="24"/>
         <image name="close" width="24" height="24"/>
         <image name="hang-up" width="24" height="24"/>
         <image name="speaker-off" width="24" height="24"/>

VideoCalls/Images.xcassets/chat.imageset/Contents.json

@@ -0,0 +1,23 @@
+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "filename" : "chat.png",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "chat@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "chat@3x.png",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}