Merge branch 'charlesmchen/conversationColorsMediaShadows'

Signal/src/ViewControllers/ConversationView/Cells/OWSBubbleShapeView.h

@@ -24,11 +24,21 @@ NS_ASSUME_NONNULL_BEGIN
 @property (nonatomic, nullable) UIColor *strokeColor;
 @property (nonatomic) CGFloat strokeThickness;
 
+@property (nonatomic, nullable) UIColor *innerShadowColor;
+@property (nonatomic) CGFloat innerShadowRadius;
+@property (nonatomic) float innerShadowOpacity;
+
 - (instancetype)init NS_UNAVAILABLE;
 
-+ (OWSBubbleShapeView *)bubbleDrawView;
-+ (OWSBubbleShapeView *)bubbleShadowView;
-+ (OWSBubbleShapeView *)bubbleClipView;
+- (instancetype)initDraw NS_DESIGNATED_INITIALIZER;
+- (instancetype)initShadow NS_DESIGNATED_INITIALIZER;
+;
+- (instancetype)initClip NS_DESIGNATED_INITIALIZER;
+;
+- (instancetype)initInnerShadowWithColor:(UIColor *)color
+                                  radius:(CGFloat)radius
+                                 opacity:(float)opacity NS_DESIGNATED_INITIALIZER;
+;
 
 @end
 

Signal/src/ViewControllers/ConversationView/Cells/OWSBubbleShapeView.m

@@ -13,6 +13,7 @@ typedef NS_ENUM(NSUInteger, OWSBubbleShapeViewMode) {
     OWSBubbleShapeViewMode_Draw,
     OWSBubbleShapeViewMode_Shadow,
     OWSBubbleShapeViewMode_Clip,
+    OWSBubbleShapeViewMode_InnerShadow,
 };
 
 @interface OWSBubbleShapeView ()
@@ -30,13 +31,8 @@ typedef NS_ENUM(NSUInteger, OWSBubbleShapeViewMode) {
 
 @implementation OWSBubbleShapeView
 
-- (instancetype)init
+- (void)configure
 {
-    self = [super init];
-    if (!self) {
-        return self;
-    }
-
     self.mode = OWSBubbleShapeViewMode_Draw;
     self.opaque = NO;
     self.backgroundColor = [UIColor clearColor];
@@ -46,29 +42,67 @@ typedef NS_ENUM(NSUInteger, OWSBubbleShapeViewMode) {
     [self.layer addSublayer:self.shapeLayer];
 
     self.maskLayer = [CAShapeLayer new];
+}
+
+
+- (instancetype)initDraw
+{
+    self = [super init];
+    if (!self) {
+        return self;
+    }
+
+    self.mode = OWSBubbleShapeViewMode_Draw;
+
+    [self configure];
 
     return self;
 }
 
-+ (OWSBubbleShapeView *)bubbleDrawView
+- (instancetype)initShadow
 {
-    OWSBubbleShapeView *instance = [OWSBubbleShapeView new];
-    instance.mode = OWSBubbleShapeViewMode_Draw;
-    return instance;
+    self = [super init];
+    if (!self) {
+        return self;
+    }
+
+    self.mode = OWSBubbleShapeViewMode_Shadow;
+
+    [self configure];
+
+    return self;
 }
 
-+ (OWSBubbleShapeView *)bubbleShadowView
+- (instancetype)initClip
 {
-    OWSBubbleShapeView *instance = [OWSBubbleShapeView new];
-    instance.mode = OWSBubbleShapeViewMode_Shadow;
-    return instance;
+    self = [super init];
+    if (!self) {
+        return self;
+    }
+
+    self.mode = OWSBubbleShapeViewMode_Clip;
+
+    [self configure];
+
+    return self;
 }
 
-+ (OWSBubbleShapeView *)bubbleClipView
+- (instancetype)initInnerShadowWithColor:(UIColor *)color radius:(CGFloat)radius opacity:(float)opacity
 {
-    OWSBubbleShapeView *instance = [OWSBubbleShapeView new];
-    instance.mode = OWSBubbleShapeViewMode_Clip;
-    return instance;
+    self = [super init];
+    if (!self) {
+        return self;
+    }
+
+    self.mode = OWSBubbleShapeViewMode_InnerShadow;
+    _innerShadowColor = color;
+    _innerShadowRadius = radius;
+    _innerShadowOpacity = opacity;
+
+    [self configure];
+    [self updateLayers];
+
+    return self;
 }
 
 - (void)setFillColor:(nullable UIColor *)fillColor
@@ -92,6 +126,27 @@ typedef NS_ENUM(NSUInteger, OWSBubbleShapeViewMode) {
     [self updateLayers];
 }
 
+- (void)setInnerShadowColor:(nullable UIColor *)innerShadowColor
+{
+    _innerShadowColor = innerShadowColor;
+
+    [self updateLayers];
+}
+
+- (void)setInnerShadowRadius:(CGFloat)innerShadowRadius
+{
+    _innerShadowRadius = innerShadowRadius;
+
+    [self updateLayers];
+}
+
+- (void)setInnerShadowOpacity:(float)innerShadowOpacity
+{
+    _innerShadowOpacity = innerShadowOpacity;
+
+    [self updateLayers];
+}
+
 - (void)setFrame:(CGRect)frame
 {
     BOOL didChange = !CGRectEqualToRect(self.frame, frame);
@@ -188,6 +243,32 @@ typedef NS_ENUM(NSUInteger, OWSBubbleShapeViewMode) {
             self.maskLayer.path = bezierPath.CGPath;
             self.layer.mask = self.maskLayer;
             break;
+        case OWSBubbleShapeViewMode_InnerShadow: {
+            self.maskLayer.path = bezierPath.CGPath;
+            self.layer.mask = self.maskLayer;
+
+            // Inner shadow.
+            // This should usually not be visible; it is used to distinguish
+            // profile pics from the background if they are similar.
+            self.shapeLayer.frame = self.bounds;
+            self.shapeLayer.masksToBounds = YES;
+            CGRect shadowBounds = self.bounds;
+            UIBezierPath *shadowPath = [bezierPath copy];
+            // This can be any value large enough to cast a sufficiently large shadow.
+            CGFloat shadowInset = -(self.innerShadowRadius * 4.f);
+            [shadowPath
+                appendPath:[UIBezierPath bezierPathWithRect:CGRectInset(shadowBounds, shadowInset, shadowInset)]];
+            // This can be any color since the fill should be clipped.
+            self.shapeLayer.fillColor = UIColor.blackColor.CGColor;
+            self.shapeLayer.path = shadowPath.CGPath;
+            self.shapeLayer.fillRule = kCAFillRuleEvenOdd;
+            self.shapeLayer.shadowColor = self.innerShadowColor.CGColor;
+            self.shapeLayer.shadowRadius = self.innerShadowRadius;
+            self.shapeLayer.shadowOpacity = self.innerShadowOpacity;
+            self.shapeLayer.shadowOffset = CGSizeZero;
+
+            break;
+        }
     }
 
     [CATransaction commit];

Signal/src/ViewControllers/ConversationView/Cells/OWSMessageBubbleView.m

@@ -352,13 +352,14 @@ const UIDataDetectorTypes kOWSAllowedDataDetectorTypes
             if (self.hasBodyMediaWithThumbnail) {
                 [self.stackView addArrangedSubview:bodyMediaView];
 
-                OWSBubbleShapeView *strokeView = [OWSBubbleShapeView bubbleDrawView];
-                strokeView.strokeThickness = CGHairlineWidth();
-                strokeView.strokeColor = (Theme.isDarkThemeEnabled ? [UIColor colorWithWhite:1.f alpha:0.2f]
-                                                                   : [UIColor colorWithWhite:0.f alpha:0.2f]);
-                [bodyMediaView addSubview:strokeView];
-                [self.bubbleView addPartnerView:strokeView];
-                [self.viewConstraints addObjectsFromArray:[strokeView ows_autoPinToSuperviewEdges]];
+                OWSBubbleShapeView *innerShadowView = [[OWSBubbleShapeView alloc]
+                    initInnerShadowWithColor:(Theme.isDarkThemeEnabled ? UIColor.ows_whiteColor
+                                                                       : UIColor.ows_blackColor)
+                                      radius:0.5f
+                                     opacity:0.15f];
+                [bodyMediaView addSubview:innerShadowView];
+                [self.bubbleView addPartnerView:innerShadowView];
+                [self.viewConstraints addObjectsFromArray:[innerShadowView ows_autoPinToSuperviewEdges]];
             } else {
                 OWSAssertDebug(self.cellType == OWSMessageCellType_ContactShare);
 
@@ -496,8 +497,8 @@ const UIDataDetectorTypes kOWSAllowedDataDetectorTypes
     UIView *proxyView = [UIView new];
     [self.stackView addArrangedSubview:proxyView];
 
-    OWSBubbleShapeView *shadowView = [OWSBubbleShapeView bubbleShadowView];
-    OWSBubbleShapeView *clipView = [OWSBubbleShapeView bubbleClipView];
+    OWSBubbleShapeView *shadowView = [[OWSBubbleShapeView alloc] initShadow];
+    OWSBubbleShapeView *clipView = [[OWSBubbleShapeView alloc] initClip];
 
     [self addSubview:shadowView];
     [self addSubview:clipView];