ZOWWatermarkCreator

add image or string water mark to your image and video media.

Installation

Drag WatermarkCreator.h and WatermarkCreator.m into your project.Then import.

#import "WatermarkCreator.h"

Usage

• set WatermarkItem

  WaterMarkImageItem *imageItem = [[WaterMarkImageItem alloc] init];
    imageItem.watermarkImage = watermarkImage;
    imageItem.watermarkFrameOnOriginalImageView = CGRectMake(50, 50, 50, 50);
    
    WaterMarkStringItem *stringItem = [[WaterMarkStringItem alloc] init];
    stringItem.watermarkString = @"I am a WaterMark!";
    stringItem.watermarkFrameOnOriginalImageView = CGRectMake(50, 100, 200, 50);
    stringItem.attributes = @{NSForegroundColorAttributeName:[UIColor purpleColor], NSFontAttributeName:[UIFont systemFontOfSize:50]};

• set WatermarkCreatorModel

  WaterMarkCreatorModel *model = [[WaterMarkCreatorModel alloc] init];
    model.originalImage = originImage;
    model.originalImageSize = originImage.size;
    model.originalImageViewSize = originImageView.bounds.size;
    model.itemArray = @[imageItem, stringItem];
    model.successBlock = ^(WaterMarkCreatorModel *originItem, UIImage *processedImage, NSURL *processedVideoUrl) {
        if(processedImage)
        {
            dispatch_async(dispatch_get_main_queue(), ^{
                mixedImageView.image = processedImage;
            });
        }
    };

• use WatermarkCreator to create it!

  [[[WaterMarkCreator alloc] init] createWatermarkWithCreatorModels:@[model]];

##Description ###WatermarkItem A specific WatermarkItem represents a watermark, it can be a image watermark with WatermarkImageItem, or a string watermark with WatermarkStringItem.

You can use specific WatermarkItem to create the watermark item you want, only a few step to configure the item.

A WatermarkImageItem need to be configured with a watermark image and the frame you want to put it on the original image.

A WatermarkStringItem need to be configured with a watermark string and the frame.Optionaly, you can specific the attribute of the string with the property attributes.

###WatermarkCreatorModel A WatermarkCreatorModel represents a creation context, it contains all infomation needed in a specific watermark procession, like the originalImage or originVideoURLString you want to put watermark on, the outPutPath of the processed media, and the watermark itemArray.

You can set mutiple WatermarkItem in a WatermarkCreatorModel by add them to the itemArray array object. They will be created all in one procession.

The property originalImageSize represents the size of the original image, while the originalImageViewSize represents the imageview size. Since the image size we see in our eyes doesn't means the real size of the image, but also limited to the UIImageView container size.So, if the watermark frame you give is based on a UIImageView, you should also pass the originalImageViewSize property, and if it is based on the real image size, just ignore the property, only set the originalImageSize is OK.

Set the successBlock and failedBlock to track the result.

###WatermarkCreator Pass a NSArray<WatermarkCreatorModel *> object to a WatermarkCreator object to begin the processions.

Every WatermarkCreator has a build-in NSOperaionQueue to handle the management of the procession operation. So in most occasions, you only need one WatermarkCreator to create all your needed watermark context.

All the processions runs async, you can set the blocks in WatermarkCreatorModel to handle the result. Don't forget to dispatch the UI setting to the main queue.