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xiaobawang/tongxin/ThirdPartyLib/MessageDisplayKit/Classes/Vendor/XHPathCover/XHPathCover.m

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//
// XHPathConver.m
// XHPathCover
//
// Created by 曾 宪华 on 14-2-7.
// Copyright (c) 2014年 曾宪华 开发团队(http://iyilunba.com ) 本人QQ:543413507 本人QQ群（142557668）. All rights reserved.
//
#import "XHPathCover.h"
#import "XHWaterDropRefresh.h"
NSString *const XHUserNameKey = @"XHUserName";
NSString *const XHBirthdayKey = @"XHBirthday";
#import <Accelerate/Accelerate.h>
#import <float.h>
@interface UIImage (ImageEffects)
- (UIImage *)applyLightEffect;
@end
@implementation UIImage (ImageEffects)
- (UIImage *)applyLightEffect {
UIColor *tintColor = [UIColor colorWithWhite:1.0 alpha:0.3];
return [self applyBlurWithRadius:30 tintColor:tintColor saturationDeltaFactor:1.8 maskImage:nil];
}
- (UIImage *)applyBlurWithRadius:(CGFloat)blurRadius tintColor:(UIColor *)tintColor saturationDeltaFactor:(CGFloat)saturationDeltaFactor maskImage:(UIImage *)maskImage {
// Check pre-conditions.
if (self.size.width < 1 || self.size.height < 1) {
NSLog (@"*** error: invalid size: (%.2f x %.2f). Both dimensions must be >= 1: %@", self.size.width, self.size.height, self);
return nil;
}
if (!self.CGImage) {
NSLog (@"*** error: image must be backed by a CGImage: %@", self);
return nil;
}
if (maskImage && !maskImage.CGImage) {
NSLog (@"*** error: maskImage must be backed by a CGImage: %@", maskImage);
return nil;
}
CGRect imageRect = { CGPointZero, self.size };
UIImage *effectImage = self;
BOOL hasBlur = blurRadius > __FLT_EPSILON__;
BOOL hasSaturationChange = fabs(saturationDeltaFactor - 1.) > __FLT_EPSILON__;
if (hasBlur || hasSaturationChange) {
UIGraphicsBeginImageContextWithOptions(self.size, NO, [[UIScreen mainScreen] scale]);
CGContextRef effectInContext = UIGraphicsGetCurrentContext();
CGContextScaleCTM(effectInContext, 1.0, -1.0);
CGContextTranslateCTM(effectInContext, 0, -self.size.height);
CGContextDrawImage(effectInContext, imageRect, self.CGImage);
vImage_Buffer effectInBuffer;
effectInBuffer.data = CGBitmapContextGetData(effectInContext);
effectInBuffer.width = CGBitmapContextGetWidth(effectInContext);
effectInBuffer.height = CGBitmapContextGetHeight(effectInContext);
effectInBuffer.rowBytes = CGBitmapContextGetBytesPerRow(effectInContext);
UIGraphicsBeginImageContextWithOptions(self.size, NO, [[UIScreen mainScreen] scale]);
CGContextRef effectOutContext = UIGraphicsGetCurrentContext();
vImage_Buffer effectOutBuffer;
effectOutBuffer.data = CGBitmapContextGetData(effectOutContext);
effectOutBuffer.width = CGBitmapContextGetWidth(effectOutContext);
effectOutBuffer.height = CGBitmapContextGetHeight(effectOutContext);
effectOutBuffer.rowBytes = CGBitmapContextGetBytesPerRow(effectOutContext);
if (hasBlur) {
// A description of how to compute the box kernel width from the Gaussian
// radius (aka standard deviation) appears in the SVG spec:
// http://www.w3.org/TR/SVG/filters.html#feGaussianBlurElement
//
// For larger values of 's' (s >= 2.0), an approximation can be used: Three
// successive box-blurs build a piece-wise quadratic convolution kernel, which
// approximates the Gaussian kernel to within roughly 3%.
//
// let d = floor(s * 3*sqrt(2*pi)/4 + 0.5)
//
// ... if d is odd, use three box-blurs of size 'd', centered on the output pixel.
//
CGFloat inputRadius = blurRadius * [[UIScreen mainScreen] scale];
NSUInteger radius = floor(inputRadius * 3. * sqrt(2 * M_PI) / 4 + 0.5);
if (radius % 2 != 1) {
radius += 1; // force radius to be odd so that the three box-blur methodology works.
}
vImageBoxConvolve_ARGB8888(&effectInBuffer, &effectOutBuffer, NULL, 0, 0, (unsigned int)radius, (unsigned int)radius, 0, kvImageEdgeExtend);
vImageBoxConvolve_ARGB8888(&effectOutBuffer, &effectInBuffer, NULL, 0, 0, (unsigned int)radius, (unsigned int)radius, 0, kvImageEdgeExtend);
vImageBoxConvolve_ARGB8888(&effectInBuffer, &effectOutBuffer, NULL, 0, 0, (unsigned int)radius, (unsigned int)radius, 0, kvImageEdgeExtend);
}
BOOL effectImageBuffersAreSwapped = NO;
if (hasSaturationChange) {
CGFloat s = saturationDeltaFactor;
CGFloat floatingPointSaturationMatrix[] = {
0.0722 + 0.9278 * s, 0.0722 - 0.0722 * s, 0.0722 - 0.0722 * s, 0,
0.7152 - 0.7152 * s, 0.7152 + 0.2848 * s, 0.7152 - 0.7152 * s, 0,
0.2126 - 0.2126 * s, 0.2126 - 0.2126 * s, 0.2126 + 0.7873 * s, 0,
0, 0, 0, 1,
};
const int32_t divisor = 256;
NSUInteger matrixSize = sizeof(floatingPointSaturationMatrix)/sizeof(floatingPointSaturationMatrix[0]);
int16_t saturationMatrix[matrixSize];
for (NSUInteger i = 0; i < matrixSize; ++i) {
saturationMatrix[i] = (int16_t)roundf(floatingPointSaturationMatrix[i] * divisor);
}
if (hasBlur) {
vImageMatrixMultiply_ARGB8888(&effectOutBuffer, &effectInBuffer, saturationMatrix, divisor, NULL, NULL, kvImageNoFlags);
effectImageBuffersAreSwapped = YES;
}
else {
vImageMatrixMultiply_ARGB8888(&effectInBuffer, &effectOutBuffer, saturationMatrix, divisor, NULL, NULL, kvImageNoFlags);
}
}
if (!effectImageBuffersAreSwapped)
effectImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
if (effectImageBuffersAreSwapped)
effectImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
}
// Set up output context.
UIGraphicsBeginImageContextWithOptions(self.size, NO, [[UIScreen mainScreen] scale]);
CGContextRef outputContext = UIGraphicsGetCurrentContext();
CGContextScaleCTM(outputContext, 1.0, -1.0);
CGContextTranslateCTM(outputContext, 0, -self.size.height);
// Draw base image.
CGContextDrawImage(outputContext, imageRect, self.CGImage);
// Draw effect image.
if (hasBlur) {
CGContextSaveGState(outputContext);
if (maskImage) {
CGContextClipToMask(outputContext, imageRect, maskImage.CGImage);
}
CGContextDrawImage(outputContext, imageRect, effectImage.CGImage);
CGContextRestoreGState(outputContext);
}
// Add in color tint.
if (tintColor) {
CGContextSaveGState(outputContext);
CGContextSetFillColorWithColor(outputContext, tintColor.CGColor);
CGContextFillRect(outputContext, imageRect);
CGContextRestoreGState(outputContext);
}
// Output image is ready.
UIImage *outputImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return outputImage;
}
@end
@interface XHPathCover () {
BOOL normal, paste, hasStop;
BOOL isrefreshed;
}
@property (nonatomic, strong) UIView *bannerView;
@property (nonatomic, strong) UIView *showView;
@property (nonatomic, strong) XHWaterDropRefresh *waterDropRefresh;
@property (nonatomic, assign) CGFloat showUserInfoViewOffsetHeight;
@end
@implementation XHPathCover
#pragma mark - Publish Api
- (void)stopRefresh {
[_waterDropRefresh stopRefresh];
if(_touching == NO) {
[self resetTouch];
} else {
hasStop = YES;
}
}
// background
- (void)setBackgroundImage:(UIImage *)backgroundImage {
if (backgroundImage) {
_bannerImageView.image = backgroundImage;
_bannerImageViewWithImageEffects.image = [backgroundImage applyLightEffect];
}
}
- (void)setBackgroundImageUrlString:(NSString *)backgroundImageUrlString {
if (backgroundImageUrlString) {
}
}
// avatar
- (void)setAvatarImage:(UIImage *)avatarImage {
if (avatarImage) {
[_avatarButton setImage:avatarImage forState:UIControlStateNormal];
}
}
- (void)setAvatarUrlString:(NSString *)avatarUrlString {
if (avatarUrlString) {
}
}
// set info
- (void)setInfo:(NSDictionary *)info {
NSString *userName = [info valueForKey:XHUserNameKey];
if (userName) {
self.userNameLabel.text = userName;
}
NSString *birthday = [info valueForKey:XHBirthdayKey];
if (birthday) {
self.birthdayLabel.text = birthday;
}
}
- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView {
self.touching = YES;
}
- (void)scrollViewDidScroll:(UIScrollView *)scrollView {
self.offsetY = scrollView.contentOffset.y;
}
- (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate {
if(decelerate == NO) {
self.touching = NO;
}
}
- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView {
self.touching = NO;
}
#pragma mark - Propertys
- (void)setTouching:(BOOL)touching {
if(touching) {
if(hasStop) {
[self resetTouch];
}
if(normal) {
paste = YES;
} else if (paste == NO && _waterDropRefresh.isRefreshing == NO) {
normal = YES;
}
} else if(_waterDropRefresh.isRefreshing == NO) {
[self resetTouch];
}
_touching = touching;
}
- (void)setOffsetY:(CGFloat)y {
CGFloat fixAdaptorPadding = 0;
if ([[[UIDevice currentDevice] systemVersion] integerValue] >= 7.0) {
fixAdaptorPadding = 64;
}
y += fixAdaptorPadding;
_offsetY = y;
CGRect frame = _showView.frame;
if(y < 0) {
if((_waterDropRefresh.isRefreshing) || hasStop) {
if(normal && paste == NO) {
frame.origin.y = self.showUserInfoViewOffsetHeight + y;
_showView.frame = frame;
} else {
if(frame.origin.y != self.showUserInfoViewOffsetHeight) {
frame.origin.y = self.showUserInfoViewOffsetHeight;
_showView.frame = frame;
}
}
} else {
frame.origin.y = self.showUserInfoViewOffsetHeight + y;
_showView.frame = frame;
}
} else {
if(normal && _touching && isrefreshed) {
paste = YES;
}
if(frame.origin.y != self.showUserInfoViewOffsetHeight) {
frame.origin.y = self.showUserInfoViewOffsetHeight;
_showView.frame = frame;
}
}
if (hasStop == NO) {
_waterDropRefresh.currentOffset = y;
}
UIView *bannerSuper = _bannerImageView.superview;
CGRect bframe = bannerSuper.frame;
if(y < 0) {
bframe.origin.y = y;
bframe.size.height = -y + bannerSuper.superview.frame.size.height;
bannerSuper.frame = bframe;
CGPoint center = _bannerImageView.center;
center.y = bannerSuper.frame.size.height / 2;
_bannerImageView.center = center;
if (self.isZoomingEffect) {
_bannerImageView.center = center;
CGFloat scale = fabs(y) / self.parallaxHeight;
_bannerImageView.transform = CGAffineTransformMakeScale(1+scale, 1+scale);
}
} else {
if(bframe.origin.y != 0) {
bframe.origin.y = 0;
bframe.size.height = bannerSuper.superview.frame.size.height;
bannerSuper.frame = bframe;
}
if(y < bframe.size.height) {
CGPoint center = _bannerImageView.center;
center.y = bannerSuper.frame.size.height/2 + 0.5 * y;
_bannerImageView.center = center;
}
}
if (self.isLightEffect) {
if(y < 0 && y >= -self.lightEffectPadding) {
float percent = (-y / (self.lightEffectPadding * self.lightEffectAlpha));
self.bannerImageViewWithImageEffects.alpha = percent;
} else if (y <= -self.lightEffectPadding) {
self.bannerImageViewWithImageEffects.alpha = self.lightEffectPadding / (self.lightEffectPadding * self.lightEffectAlpha);
} else if (y > self.lightEffectPadding) {
self.bannerImageViewWithImageEffects.alpha = 0;
}
}
}
#pragma mark - Life cycle
- (id)initWithFrame:(CGRect)frame {
self = [super initWithFrame:frame];
if (self) {
// Initialization code
[self _setup];
}
return self;
}
- (id)initWithCoder:(NSCoder *)aDecoder {
self = [super initWithCoder:aDecoder];
if(self)
{
[self _setup];
}
return self;
}
- (void)_setup {
self.parallaxHeight = 170;
self.isLightEffect = YES;
self.lightEffectPadding = 80;
self.lightEffectAlpha = 1.15;
_bannerView = [[UIView alloc] initWithFrame:self.bounds];
_bannerView.clipsToBounds = YES;
UITapGestureRecognizer *tapGestureRecongnizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapGestureRecongnizerHandle:)];
[_bannerView addGestureRecognizer:tapGestureRecongnizer];
_bannerImageView = [[UIImageView alloc] initWithFrame:CGRectMake(0, -self.parallaxHeight, CGRectGetWidth(_bannerView.frame), CGRectGetHeight(_bannerView.frame) + self.parallaxHeight * 2)];
_bannerImageView.contentMode = UIViewContentModeScaleToFill;
[_bannerView addSubview:self.bannerImageView];
_bannerImageViewWithImageEffects = [[UIImageView alloc] initWithFrame:_bannerImageView.frame];
_bannerImageViewWithImageEffects.alpha = 0.;
[_bannerView addSubview:self.bannerImageViewWithImageEffects];
[self addSubview:self.bannerView];
CGFloat waterDropRefreshHeight = 100;
CGFloat waterDropRefreshWidth = 20;
_waterDropRefresh = [[XHWaterDropRefresh alloc] initWithFrame:CGRectMake(33, CGRectGetHeight(self.bounds) - waterDropRefreshHeight, waterDropRefreshWidth, waterDropRefreshHeight)];
_waterDropRefresh.refreshCircleImage = [UIImage imageNamed:@"circle"];
_waterDropRefresh.offsetHeight = 20; // 线条的长度
[self addSubview:self.waterDropRefresh];
CGFloat avatarButtonHeight = 66;
self.showUserInfoViewOffsetHeight = CGRectGetHeight(self.frame) - waterDropRefreshHeight / 3 - avatarButtonHeight;
_showView = [[UIView alloc] initWithFrame:CGRectMake(0, self.showUserInfoViewOffsetHeight, CGRectGetWidth(self.bounds), waterDropRefreshHeight)];
_showView.backgroundColor = [UIColor clearColor];
_avatarButton = [[UIButton alloc] initWithFrame:CGRectMake(15, 0, avatarButtonHeight, avatarButtonHeight)];
_userNameLabel = [[UILabel alloc] initWithFrame:CGRectMake(93, 0, 207, 34)];
_userNameLabel.textColor = [UIColor whiteColor];
_userNameLabel.backgroundColor = [UIColor clearColor];
_userNameLabel.shadowColor = [UIColor blackColor];
_userNameLabel.shadowOffset = CGSizeMake(0, 2);
_userNameLabel.font = [UIFont boldSystemFontOfSize:28.0f];
_birthdayLabel = [[UILabel alloc] initWithFrame:CGRectMake(93, 42, 207, 24)];
_birthdayLabel.textColor = [UIColor whiteColor];
_birthdayLabel.backgroundColor = [UIColor clearColor];
_birthdayLabel.shadowColor = [UIColor blackColor];
_birthdayLabel.shadowOffset = CGSizeMake(0, 2);
_birthdayLabel.font = [UIFont systemFontOfSize:14.0f];
[_showView addSubview:self.avatarButton];
[_showView addSubview:self.userNameLabel];
[_showView addSubview:self.birthdayLabel];
[self addSubview:self.showView];
}
- (void)dealloc {
self.bannerImageView = nil;
self.bannerImageViewWithImageEffects = nil;
self.avatarButton = nil;
self.userNameLabel = nil;
self.birthdayLabel = nil;
self.bannerView = nil;
self.showView = nil;
self.waterDropRefresh = nil;
}
- (void)willMoveToSuperview:(UIView *)newSuperview {
[super willMoveToSuperview:newSuperview];
if(newSuperview) {
[self initWaterView];
}
}
- (void)initWaterView {
__weak XHPathCover *wself =self;
[_waterDropRefresh setHandleRefreshEvent:^{
[wself setIsRefreshed:YES];
if(wself.handleRefreshEvent) {
wself.handleRefreshEvent();
}
}];
}
#pragma mark - previte method
- (void)tapGestureRecongnizerHandle:(UITapGestureRecognizer *)tapGestureRecongnizer {
if (self.handleTapBackgroundImageEvent) {
self.handleTapBackgroundImageEvent();
}
}
- (void)setIsRefreshed:(BOOL)b {
isrefreshed = b;
}
- (void)refresh {
if(_waterDropRefresh.isRefreshing) {
[_waterDropRefresh startRefreshAnimation];
}
}
- (void)resetTouch {
normal = NO;
paste = NO;
hasStop = NO;
isrefreshed = NO;
}
@end