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Ported TabBarIOS to OSS and unified implementation

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This commit is contained in:
Nick Lockwood
2015-03-05 16:36:41 -08:00
parent ab2537816f
commit fb2f063ef5
51 changed files with 1148 additions and 478 deletions
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91
ReactKit/Base/RCTConvert.m
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@@ -4,9 +4,6 @@
#import <objc/message.h>
#import <ImageIO/ImageIO.h>
#import <MobileCoreServices/MobileCoreServices.h>
#import "RCTLog.h"
CGFloat const RCTDefaultFontSize = 14;
@@ -431,88 +428,11 @@ RCT_STRUCT_CONVERTER(CGAffineTransform, (@[@"a", @"b", @"c", @"d", @"tx", @"ty"]
return [self UIColor:json].CGColor;
}
+ (CAKeyframeAnimation *)GIF:(id)json
{
CGImageSourceRef imageSource = NULL;
if ([json isKindOfClass:[NSString class]]) {
NSString *path = json;
if (path.length == 0) {
return nil;
}
NSURL *fileURL = [path isAbsolutePath] ? [NSURL fileURLWithPath:path] : [[NSBundle mainBundle] URLForResource:path withExtension:nil];
imageSource = CGImageSourceCreateWithURL((CFURLRef)fileURL, NULL);
} else if ([json isKindOfClass:[NSData class]]) {
NSData *data = json;
if (data.length == 0) {
return nil;
}
imageSource = CGImageSourceCreateWithData((CFDataRef)data, NULL);
} else {
RCTLogMustFix(@"Expected NSString or NSData for GIF, received %@: %@", [json class], json);
return nil;
}
if (!UTTypeConformsTo(CGImageSourceGetType(imageSource), kUTTypeGIF)) {
CFRelease(imageSource);
return nil;
}
NSDictionary *properties = (__bridge_transfer NSDictionary *)CGImageSourceCopyProperties(imageSource, NULL);
NSUInteger loopCount = [properties[(id)kCGImagePropertyGIFDictionary][(id)kCGImagePropertyGIFLoopCount] unsignedIntegerValue];
size_t imageCount = CGImageSourceGetCount(imageSource);
NSTimeInterval duration = 0;
NSMutableArray *delays = [NSMutableArray arrayWithCapacity:imageCount];
NSMutableArray *images = [NSMutableArray arrayWithCapacity:imageCount];
for (size_t i = 0; i < imageCount; i++) {
CGImageRef image = CGImageSourceCreateImageAtIndex(imageSource, i, NULL);
NSDictionary *frameProperties = (__bridge_transfer NSDictionary *)CGImageSourceCopyPropertiesAtIndex(imageSource, i, NULL);
NSDictionary *frameGIFProperties = frameProperties[(id)kCGImagePropertyGIFDictionary];
const NSTimeInterval kDelayTimeIntervalDefault = 0.1;
NSNumber *delayTime = frameGIFProperties[(id)kCGImagePropertyGIFUnclampedDelayTime] ?: frameGIFProperties[(id)kCGImagePropertyGIFDelayTime];
if (delayTime == nil) {
if (i == 0) {
delayTime = @(kDelayTimeIntervalDefault);
} else {
delayTime = delays[i - 1];
}
}
const NSTimeInterval kDelayTimeIntervalMinimum = 0.02;
if (delayTime.floatValue < (float)kDelayTimeIntervalMinimum - FLT_EPSILON) {
delayTime = @(kDelayTimeIntervalDefault);
}
duration += delayTime.doubleValue;
delays[i] = delayTime;
images[i] = (__bridge_transfer id)image;
}
CFRelease(imageSource);
NSMutableArray *keyTimes = [NSMutableArray arrayWithCapacity:delays.count];
NSTimeInterval runningDuration = 0;
for (NSNumber *delayNumber in delays) {
[keyTimes addObject:@(runningDuration / duration)];
runningDuration += delayNumber.doubleValue;
}
[keyTimes addObject:@1.0];
CAKeyframeAnimation *animation = [CAKeyframeAnimation animationWithKeyPath:@"contents"];
animation.calculationMode = kCAAnimationDiscrete;
animation.repeatCount = loopCount == 0 ? HUGE_VALF : loopCount;
animation.keyTimes = keyTimes;
animation.values = images;
animation.duration = duration;
return animation;
}
+ (UIImage *)UIImage:(id)json
{
// TODO: we might as well cache the result of these checks (and possibly the
// image itself) so as to reduce overhead on subsequent checks of the same input
if (![json isKindOfClass:[NSString class]]) {
RCTLogError(@"Expected NSString for UIImage, received %@: %@", [json class], json);
return nil;
@@ -532,9 +452,8 @@ RCT_STRUCT_CONVERTER(CGAffineTransform, (@[@"a", @"b", @"c", @"d", @"tx", @"ty"]
image = [UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:path ofType:nil]];
}
}
if (!image) {
RCTLogWarn(@"No image was found at path %@", json);
}
// NOTE: we don't warn about nil images because there are legitimate
// case where we find out if a string is an image by using this method
return image;
}