This app provides monitoring and information features for the common freifunk user and the technical stuff of a freifunk community.
Code base is taken from a TUM Practical Course project and added here to see if Freifunk Altdorf can use it.
https://www.freifunk-altdorf.de
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80 lines
2.6 KiB
80 lines
2.6 KiB
/** |
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* Copyright (c) 2015-present, Facebook, Inc. |
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* |
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* This source code is licensed under the MIT license found in the |
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* LICENSE file in the root directory of this source tree. |
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*/ |
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#import "RCTImageEditingManager.h" |
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#import <UIKit/UIKit.h> |
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#import <React/RCTConvert.h> |
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#import <React/RCTLog.h> |
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#import <React/RCTUtils.h> |
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#import "RCTImageLoader.h" |
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#import "RCTImageStoreManager.h" |
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#import "RCTImageUtils.h" |
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@implementation RCTImageEditingManager |
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RCT_EXPORT_MODULE() |
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@synthesize bridge = _bridge; |
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/** |
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* Crops an image and adds the result to the image store. |
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* |
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* @param imageRequest An image URL |
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* @param cropData Dictionary with `offset`, `size` and `displaySize`. |
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* `offset` and `size` are relative to the full-resolution image size. |
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* `displaySize` is an optimization - if specified, the image will |
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* be scaled down to `displaySize` rather than `size`. |
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* All units are in px (not points). |
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*/ |
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RCT_EXPORT_METHOD(cropImage:(NSURLRequest *)imageRequest |
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cropData:(NSDictionary *)cropData |
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successCallback:(RCTResponseSenderBlock)successCallback |
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errorCallback:(RCTResponseErrorBlock)errorCallback) |
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{ |
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CGRect rect = { |
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[RCTConvert CGPoint:cropData[@"offset"]], |
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[RCTConvert CGSize:cropData[@"size"]] |
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}; |
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[_bridge.imageLoader loadImageWithURLRequest:imageRequest callback:^(NSError *error, UIImage *image) { |
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if (error) { |
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errorCallback(error); |
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return; |
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} |
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// Crop image |
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CGSize targetSize = rect.size; |
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CGRect targetRect = {{-rect.origin.x, -rect.origin.y}, image.size}; |
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CGAffineTransform transform = RCTTransformFromTargetRect(image.size, targetRect); |
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UIImage *croppedImage = RCTTransformImage(image, targetSize, image.scale, transform); |
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// Scale image |
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if (cropData[@"displaySize"]) { |
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targetSize = [RCTConvert CGSize:cropData[@"displaySize"]]; // in pixels |
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RCTResizeMode resizeMode = [RCTConvert RCTResizeMode:cropData[@"resizeMode"] ?: @"contain"]; |
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targetRect = RCTTargetRect(croppedImage.size, targetSize, 1, resizeMode); |
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transform = RCTTransformFromTargetRect(croppedImage.size, targetRect); |
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croppedImage = RCTTransformImage(croppedImage, targetSize, image.scale, transform); |
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} |
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// Store image |
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[self->_bridge.imageStoreManager storeImage:croppedImage withBlock:^(NSString *croppedImageTag) { |
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if (!croppedImageTag) { |
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NSString *errorMessage = @"Error storing cropped image in RCTImageStoreManager"; |
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RCTLogWarn(@"%@", errorMessage); |
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errorCallback(RCTErrorWithMessage(errorMessage)); |
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return; |
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} |
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successCallback(@[croppedImageTag]); |
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}]; |
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}]; |
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} |
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@end
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