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https://github.com/status-im/react-native.git
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2b657003b7
Summary: Hi, I'm currently building an app that changes metadata, does some resizes, maybe watermarking ...etc. I want to use RCTImageStoreManager to store the original image in memory and allow me to command different modifications from javascript as it gives me more flexibility. As RCTImageEditingManager does for example. But currently the RTCImageStoreManager uses UIImage to store the image, the problem is that UIImage losses metadata. So i suggest we change it to NSData. Additionally I added a method to remove an image from the store. A related PR can be found here https://github.com/lwansbrough/react-native-camera/pull/100. Closes https://github.com/facebook/react-native/pull/3290 Reviewed By: javache Differential Revision: D2647271 Pulled By: nicklockwood fb-gh-sync-id: e66353ae3005423beee72ec22189dcb117fc719f
69 lines
3.1 KiB
Objective-C
69 lines
3.1 KiB
Objective-C
/*
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* Copyright (c) 2013, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*
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*/
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#import <UIKit/UIKit.h>
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#import "RCTDefines.h"
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/**
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* This function takes an input content size (typically from an image), a target
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* size and scale that it will be drawn at (typically in a CGContext) and then
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* calculates the rectangle to draw the image into so that it will be sized and
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* positioned correctly if drawn using the specified content mode.
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*/
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RCT_EXTERN CGRect RCTTargetRect(CGSize sourceSize, CGSize destSize,
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CGFloat destScale, UIViewContentMode resizeMode);
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/**
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* This function takes an input content size & scale (typically from an image),
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* a target size & scale at which it will be displayed (typically in a
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* UIImageView) and then calculates the optimal size at which to redraw the
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* image so that it will be displayed correctly with the specified content mode.
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*/
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RCT_EXTERN CGSize RCTTargetSize(CGSize sourceSize, CGFloat sourceScale,
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CGSize destSize, CGFloat destScale,
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UIViewContentMode resizeMode,
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BOOL allowUpscaling);
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/**
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* This function takes an input content size & scale (typically from an image),
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* a target size & scale that it will be displayed at, and determines if the
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* source will need to be upscaled to fit (which may result in pixelization).
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*/
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RCT_EXTERN BOOL RCTUpscalingRequired(CGSize sourceSize, CGFloat sourceScale,
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CGSize destSize, CGFloat destScale,
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UIViewContentMode resizeMode);
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/**
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* This function takes a source size and scale and returns the size in pixels.
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* Note that the pixel width/height is rounded up to the nearest integral size.
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*/
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RCT_EXTERN CGSize RCTSizeInPixels(CGSize pointSize, CGFloat scale);
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/**
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* This function takes the source data for an image and decodes it at the
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* specified size. If the original image is smaller than the destination size,
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* the resultant image's scale will be decreased to compensate, so the
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* width/height of the returned image is guaranteed to be >= destSize.
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* Pass a destSize of CGSizeZero to decode the image at its original size.
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*/
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RCT_EXTERN UIImage *RCTDecodeImageWithData(NSData *data,
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CGSize destSize,
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CGFloat destScale,
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UIViewContentMode resizeMode);
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/**
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* Convert an image back into data. Images with an alpha channel will be
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* converted to lossless PNG data. Images without alpha will be converted to
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* JPEG. The `quality` argument controls the compression ratio of the JPEG
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* conversion, with 1.0 being maximum quality. It has no effect for images
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* using PNG compression.
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*/
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RCT_EXTERN NSData *RCTGetImageData(CGImageRef image, float quality);
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