Implement SDL 0179 - Pixel density and Scale

SmartDeviceLink/SDLCarWindow.m

@@ -22,7 +22,6 @@
 #import "SDLStreamingMediaConfiguration.h"
 #import "SDLStreamingVideoLifecycleManager.h"
 #import "SDLStreamingMediaManagerConstants.h"
-#import "SDLVideoStreamingCapability.h"
 
 NS_ASSUME_NONNULL_BEGIN
 
@@ -56,7 +55,7 @@ - (instancetype)initWithStreamManager:(SDLStreamingVideoLifecycleManager *)strea
     self = [super init];
     if (!self) { return nil; }
 
-    _sdl_scale = simd_clamp(scale, 1.f, 10.f);
+    [self setScale:scale];
     _streamManager = streamManager;
     _renderingType = configuration.carWindowRenderingType;
     _allowMultipleOrientations = configuration.allowMultipleViewControllerOrientations;
@@ -177,6 +176,10 @@ - (void)setRootViewController:(nullable UIViewController *)rootViewController {
     });
 }
 
+- (void)setScale:(float)scale {
+    _sdl_scale = simd_clamp(scale, 1.f, 10.f);
+}
+
 #pragma mark - Private Helpers
 + (nullable CVPixelBufferRef)sdl_pixelBufferForImageRef:(CGImageRef)imageRef usingPool:(CVPixelBufferPoolRef)pool {
     size_t imageWidth = CGImageGetWidth(imageRef);

SmartDeviceLink/SDLFocusableItemLocatorType.h

@@ -39,6 +39,12 @@ NS_ASSUME_NONNULL_BEGIN
  */
 - (void)updateInterfaceLayout;
 
+/**
+ update scale value
+ @param scale is the scale factor value
+ */
+- (void)setScale:(float)scale;
+
 @end
 
 NS_ASSUME_NONNULL_END

SmartDeviceLink/SDLStreamingVideoLifecycleManager.m

@@ -92,6 +92,16 @@ @interface SDLStreamingVideoLifecycleManager() <SDLVideoEncoderDelegate>
 
 @end
 
+/**
+ Disclose car window private interface
+ */
+@interface SDLCarWindow (scale)
+
+- (void)setScale:(float)scale;
+
+@end
+
+
 @implementation SDLStreamingVideoLifecycleManager
 
 - (instancetype)initWithConnectionManager:(id<SDLConnectionManagerType>)connectionManager configuration:(SDLConfiguration *)configuration {
@@ -741,7 +751,10 @@ - (void)sdl_requestVideoCapabilities:(SDLVideoCapabilityResponseHandler)response
 
         SDLVideoStreamingCapability *videoCapability = ((SDLGetSystemCapabilityResponse *)response).systemCapability.videoStreamingCapability;
         self.videoStreamingCapability = videoCapability;
-        self.touchManager.scale = self.sdl_scale;
+        const float scale = self.sdl_scale;
+        self.touchManager.scale = scale;
+        [self.carWindow setScale:scale];
+        [self.focusableItemManager setScale:scale];
         SDLLogD(@"Video capabilities response received: %@", videoCapability);
         responseHandler(videoCapability);
     }];