Main.storyboard
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="5053" systemVersion="13D65" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" initialViewController="vXZ-lx-hvc">
<dependencies>
<plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="3733"/>
</dependencies>
<scenes>
<!--View Controller-->
<scene sceneID="ufC-wZ-h7g">
<objects>
<viewController id="vXZ-lx-hvc" customClass="LWTViewController" sceneMemberID="viewController">
<view key="view" contentMode="scaleToFill" id="kh9-bI-dsS">
<rect key="frame" x="0.0" y="0.0" width="320" height="480"/>
<autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
<subviews>
<imageView userInteractionEnabled="NO" contentMode="scaleToFill" horizontalHuggingPriority="251" verticalHuggingPriority="251" id="tF8-9P-CEF">
<rect key="frame" x="0.0" y="0.0" width="320" height="480"/>
<autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
</imageView>
</subviews>
<color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="calibratedWhite"/>
</view>
<connections>
<outlet property="imageView" destination="tF8-9P-CEF" id="Hph-ej-7S9"/>
</connections>
</viewController>
<placeholder placeholderIdentifier="IBFirstResponder" id="x5A-6p-PRh" sceneMemberID="firstResponder"/>
</objects>
</scene>
</scenes>
<simulatedMetricsContainer key="defaultSimulatedMetrics">
<simulatedStatusBarMetrics key="statusBar"/>
<simulatedOrientationMetrics key="orientation"/>
<simulatedScreenMetrics key="destination"/>
</simulatedMetricsContainer>
</document>
LWTViewController.h
#import <UIKit/UIKit.h>@interface LWTViewController : UIViewController
@end
LWTViewController.m
1 //
2 // LWTViewController.m
3 // Quartz2D练习 -- 绘制水印的image分类
4 //
5 // Created by apple on 14-6-10.
6 // Copyright (c) 2014年 lwt. All rights reserved.
7 //
8
9 #import "LWTViewController.h"
10 #import "UIImage+WaterStain.h"
11
12 @interface LWTViewController ()
13 @property (weak, nonatomic) IBOutlet UIImageView *imageView;
14
15 @end
16
17 @implementation LWTViewController
18
19 - (void)viewDidLoad
20 {
21 [super viewDidLoad];
22 // Do any additional setup after loading the view, typically from a nib.
23
24 UIImage *newImage = [UIImage imageWithImageName:@"scene" waterStainIconName:@"logo"];
25 UIImage *newImage1 = [UIImage imageWithImageName:@"scene" waterStainNSString:@"我是水印" CGSize:CGSizeMake(MAXFLOAT, MAXFLOAT) font:[UIFont systemFontOfSize:7.0] padding:5];
26
27 /*
28 // 测试图片效果
29 self.imageView.image = newImage;
30 self.imageView.frame = CGRectMake(50, 50, imageX, imageY);
31 */
32 // 保存图片
33 // 将图片传承二进制数据
34 NSData *data = UIImagePNGRepresentation(newImage);
35 NSData *data1 = UIImagePNGRepresentation(newImage1);
36
37 // 保存图片的地址
38 NSString *path = [[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject] stringByAppendingPathComponent:@"waterStain.png"];
39 NSString *path1 = [[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject] stringByAppendingPathComponent:@"waterStain1.png"];
40
41 NSLog(@"%@",path);
42
43 // 保存图片
44 [data writeToFile:path atomically:YES];
45 [data1 writeToFile:path1 atomically:YES];
46
47 }
48
49 @end
UIImage+WaterStain.h
//
// UIImage+WaterStain.h
// Quartz2D练习 -- 绘制水印的image分类
//
// Created by apple on 14-6-10.
// Copyright (c) 2014年 lwt. All rights reserved.
//#import <UIKit/UIKit.h>
@interface UIImage (WaterStain)
/**
* 给图片添加左上角图片水印
*
* @param imageName 要添加水印的图片
* @param iconName 水印图片
*
* @return 添加了水印的图片
*/
+ (UIImage *)imageWithImageName:(NSString *)imageName waterStainIconName:(NSString *)iconName;
/**
* 给图片右下角添加文字图片水印
*
* @param imageName 要添加水印的图片
* @param waterStr 添加的水印文字
* @param maxSize 文字最大范围
* @param textFont 字体大小
* @param padding 文字的内边距
*
* @return 添加了水印的图片
*/
+ (UIImage *)imageWithImageName:(NSString *)imageName waterStainNSString: (NSString *)waterStr CGSize:(CGSize)maxSize font: (UIFont *)textFont padding: (CGFloat)padding;@end
UIImage+WaterStain.m
//
// UIImage+WaterStain.m
// Quartz2D练习 -- 绘制水印的image分类
//
// Created by apple on 14-6-10.
// Copyright (c) 2014年 lwt. All rights reserved.
//#import "UIImage+WaterStain.h"
#import "NSString+Extension.h"@implementation UIImage (WaterStain)
+ (UIImage *)imageWithImageName:(NSString *)imageName waterStainIconName:(NSString *)iconName
{
UIImage *image = [UIImage imageNamed:imageName];CGFloat imageX = image.size.width;
CGFloat imageY = image.size.height;// 创建bigmap图形上下文
UIGraphicsBeginImageContextWithOptions(image.size, NO, 0);// 绘制图片
[image drawInRect:CGRectMake(0, 0, imageX, imageY)];CGFloat margin = 10;
// 绘制图片水印
UIImage *icon = [UIImage imageNamed:iconName];CGFloat iconX = imageX - icon.size.width - margin;
CGFloat iconY = margin;
CGFloat iconW = icon.size.width;
CGFloat iconH = icon.size.height;
// 绘制水印图片
[icon drawInRect:CGRectMake(iconX, iconY, iconW, iconH)];// 获取绘制的图片
UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext();return newImage;
}+ (UIImage *)imageWithImageName:(NSString *)imageName waterStainNSString:(NSString *)waterStr CGSize:(CGSize)maxSize font:(UIFont *)textFont padding:(CGFloat)padding
{
UIImage *image = [UIImage imageNamed:imageName];CGFloat imageX = image.size.width;
CGFloat imageY = image.size.height;// 创建bigmap图形上下文
UIGraphicsBeginImageContextWithOptions(image.size, NO, 0);// 绘制图片
[image drawInRect:CGRectMake(0, 0, imageX, imageY)];// 绘制文字水印
NSString *str = waterStr;
// 获取文字的尺寸
CGSize size = [str sizeWithFont:textFont andMaxSize:maxSize];
// 获取文字位置
CGFloat strX = imageX - size.width - padding;
CGFloat strY = imageY - size.height - padding;NSMutableDictionary *dicts = [NSMutableDictionary dictionary];
dicts[NSForegroundColorAttributeName] = [UIColor orangeColor];
dicts[NSFontAttributeName] = textFont;
// 绘制水印文字
[str drawAtPoint:CGPointMake(strX, strY) withAttributes:dicts];// 获取绘制的图片
UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext();return newImage;
}@end
NSString+Extension.h
#import <Foundation/Foundation.h>@interface NSString (Extension)
- (CGSize)sizeWithFont:(UIFont *)font andMaxSize: (CGSize)maxSize;
@end
NSString+Extension.m
#import "NSString+Extension.h"@implementation NSString (Extension)
- (CGSize)sizeWithFont:(UIFont *)font andMaxSize:(CGSize)maxSize
{
NSDictionary *dict = @{NSFontAttributeName : font};
CGSize size = [self boundingRectWithSize:maxSize options:NSStringDrawingUsesLineFragmentOrigin attributes:dict context:nil].size;
return size;
}@end
Main.storyboard,布布扣,bubuko.com