mirror of
https://github.com/Swiftgram/Telegram-iOS.git
synced 2025-09-10 14:35:42 +00:00
108 lines
3.6 KiB
Objective-C
108 lines
3.6 KiB
Objective-C
//
|
|
// RandomCoreGraphicsNode.m
|
|
// Sample
|
|
//
|
|
// Created by Scott Goodson on 9/5/15.
|
|
//
|
|
// Copyright (c) 2014-present, Facebook, Inc. All rights reserved.
|
|
// This source code is licensed under the BSD-style license found in the
|
|
// LICENSE file in the root directory of this source tree. An additional grant
|
|
// of patent rights can be found in the PATENTS file in the same directory.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
// FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
|
// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
|
// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
//
|
|
|
|
#import "RandomCoreGraphicsNode.h"
|
|
#import <AsyncDisplayKit/ASDisplayNode+Subclasses.h>
|
|
|
|
@implementation RandomCoreGraphicsNode
|
|
|
|
+ (UIColor *)randomColor
|
|
{
|
|
CGFloat hue = ( arc4random() % 256 / 256.0 ); // 0.0 to 1.0
|
|
CGFloat saturation = ( arc4random() % 128 / 256.0 ) + 0.5; // 0.5 to 1.0, away from white
|
|
CGFloat brightness = ( arc4random() % 128 / 256.0 ) + 0.5; // 0.5 to 1.0, away from black
|
|
return [UIColor colorWithHue:hue saturation:saturation brightness:brightness alpha:1];
|
|
}
|
|
|
|
+ (void)drawRect:(CGRect)bounds withParameters:(id<NSObject>)parameters isCancelled:(asdisplaynode_iscancelled_block_t)isCancelledBlock isRasterizing:(BOOL)isRasterizing
|
|
{
|
|
CGFloat locations[3];
|
|
NSMutableArray *colors = [NSMutableArray arrayWithCapacity:3];
|
|
[colors addObject:(id)[[RandomCoreGraphicsNode randomColor] CGColor]];
|
|
locations[0] = 0.0;
|
|
[colors addObject:(id)[[RandomCoreGraphicsNode randomColor] CGColor]];
|
|
locations[1] = 1.0;
|
|
[colors addObject:(id)[[RandomCoreGraphicsNode randomColor] CGColor]];
|
|
locations[2] = ( arc4random() % 256 / 256.0 );
|
|
|
|
|
|
CGContextRef ctx = UIGraphicsGetCurrentContext();
|
|
CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
|
|
CGGradientRef gradient = CGGradientCreateWithColors(colorSpace, (CFArrayRef)colors, locations);
|
|
|
|
CGGradientDrawingOptions drawingOptions;
|
|
CGContextDrawLinearGradient(ctx, gradient, CGPointZero, CGPointMake(bounds.size.width, bounds.size.height), drawingOptions);
|
|
|
|
CGGradientRelease(gradient);
|
|
CGColorSpaceRelease(colorSpace);
|
|
}
|
|
|
|
- (instancetype)init
|
|
{
|
|
if (!(self = [super init])) {
|
|
return nil;
|
|
}
|
|
|
|
_indexPathTextNode = [[ASTextNode alloc] init];
|
|
[self addSubnode:_indexPathTextNode];
|
|
|
|
return self;
|
|
}
|
|
|
|
- (void)setIndexPath:(NSIndexPath *)indexPath
|
|
{
|
|
_indexPath = indexPath;
|
|
_indexPathTextNode.attributedString = [[NSAttributedString alloc] initWithString:[indexPath description] attributes:nil];
|
|
}
|
|
|
|
//- (ASLayoutSpec *)layoutSpecThatFits:(ASSizeRange)constrainedSize
|
|
//{
|
|
// ASStackLayoutSpec *stackSpec = [ASStackLayoutSpec stackLayoutSpecWithDirection:ASStackLayoutDirectionVertical spacing:0 justifyContent:ASStackLayoutJustifyContentStart alignItems:ASStackLayoutAlignItemsStart children:@[_indexPathTextNode]];
|
|
// stackSpec.flexGrow = YES;
|
|
// return stackSpec;
|
|
//}
|
|
|
|
- (void)layout
|
|
{
|
|
_indexPathTextNode.frame = self.bounds;
|
|
[super layout];
|
|
}
|
|
|
|
#if 0
|
|
- (void)fetchData
|
|
{
|
|
NSLog(@"fetchData - %@, %@", self, self.indexPath);
|
|
[super fetchData];
|
|
}
|
|
|
|
- (void)clearFetchedData
|
|
{
|
|
NSLog(@"clearFetchedData - %@, %@", self, self.indexPath);
|
|
[super clearFetchedData];
|
|
}
|
|
|
|
- (void)visibilityDidChange:(BOOL)isVisible
|
|
{
|
|
NSLog(@"visibilityDidChange:%d - %@, %@", isVisible, self, self.indexPath);
|
|
[super visibilityDidChange:isVisible];
|
|
}
|
|
#endif
|
|
|
|
@end
|