NCBitmapRegionDecoder Class Reference

Сlass is used for getting bitmaps (png, jpg, svg) from byte array. More...

#include <com/navigine/idl/objc/NCBitmapRegionDecoder.h>

Inherits NSObject.

Instance Methods
(nullable UIImage *)	- decodeRegion:sampleSize:
	Method is used to decode rectangle region in the image specified by rect.

Class Methods
(nullable NCBitmapRegionDecoder *)	+ newInstance:
	Method is used to create instance of BitmapRegionDecoder.

Detailed Description

Сlass is used for getting bitmaps (png, jpg, svg) from byte array.

Definition at line 18 of file NCBitmapRegionDecoder.h.

Method Documentation

decodeRegion:sampleSize:

- (nullable UIImage *) decodeRegion:		(nonnull NCRectangle *)	rect
sampleSize:		(float)	sampleSize

Method is used to decode rectangle region in the image specified by rect.

Parameters

rect	area to render Rectangle
sampleSize	if set to a value > 1, requests the decoder to subsample the original image, returning a smaller image to save memory.

Returns

constructed bitmap

Swift code snippet:

        // Decode region with sample size 1 (full resolution)
        let decodedImage = decoder.decodeRegion(rect: sampleRect, sampleSize: 1)
        print("Decoded region: \‍(sampleRect.width)x\‍(sampleRect.height) at sample size 1")

Objective C code snippet:

    // Decode region with sample size 1 (full resolution)
    id decodedImage = [self.decoder decodeRegionWithRect:sampleRect sampleSize:1];
    NSLog(@"Decoded region: %dx%d at sample size 1", sampleRect.width, sampleRect.height);

newInstance:

+ (nullable NCBitmapRegionDecoder *) newInstance:

(nonnull NSData *)

data

Method is used to create instance of BitmapRegionDecoder.

Parameters

data	raw image data (could be raw svg string)

Returns

nstance of decoder, which could be used for decoding byte array to bitmap.

Swift code snippet:

        // Create new instance of BitmapRegionDecoder
        decoder = BitmapRegionDecoder.newInstance(data: imageData)
        print("Created BitmapRegionDecoder instance")

Objective C code snippet:

    // Create new instance of BitmapRegionDecoder
    self.decoder = [NCBitmapRegionDecoder newInstanceWithData:self.imageData];
    NSLog(@"Created BitmapRegionDecoder instance");

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The documentation for this class was generated from the following file:

• NCBitmapRegionDecoder.h