/** Scales down dimensions in <b>sampleSize</b> times. Returns new object. */ public ImageSize scaleDown(int sampleSize) { return new ImageSize(width / sampleSize, height / sampleSize); }
/** * Defines target size for image aware view. Size is defined by target * {@link com.nostra13.universalimageloader.core.imageaware.ImageAware view} parameters, configuration * parameters or device display dimensions.<br /> */ public static ImageSize defineTargetSizeForView(ImageAware imageAware, ImageSize maxImageSize) { int width = imageAware.getWidth(); if (width <= 0) width = maxImageSize.getWidth(); int height = imageAware.getHeight(); if (height <= 0) height = maxImageSize.getHeight(); return new ImageSize(width, height); }
ImageSize srcSize = new ImageSize(subsampledBitmap.getWidth(), subsampledBitmap.getHeight(), rotation); float scale = ImageSizeUtils.computeImageScale(srcSize, decodingInfo.getTargetSize(), decodingInfo .getViewScaleType(), scaleType == ImageScaleType.EXACTLY_STRETCHED); L.d(LOG_SCALE_IMAGE, srcSize, srcSize.scale(scale), scale, decodingInfo.getImageKey());
private static int considerMaxTextureSize(int srcWidth, int srcHeight, int scale, boolean powerOf2) { final int maxWidth = maxBitmapSize.getWidth(); final int maxHeight = maxBitmapSize.getHeight(); while ((srcWidth / scale) > maxWidth || (srcHeight / scale) > maxHeight) { if (powerOf2) { scale *= 2; } else { scale++; } } return scale; }
@Override public int getWidth() { return imageSize.getWidth(); }
@Override public int getHeight() { return imageSize.getHeight(); }
protected Options prepareDecodingOptions(ImageSize imageSize, ImageDecodingInfo decodingInfo) { ImageScaleType scaleType = decodingInfo.getImageScaleType(); int scale; if (scaleType == ImageScaleType.NONE) { scale = 1; } else if (scaleType == ImageScaleType.NONE_SAFE) { scale = ImageSizeUtils.computeMinImageSampleSize(imageSize); } else { ImageSize targetSize = decodingInfo.getTargetSize(); boolean powerOf2 = scaleType == ImageScaleType.IN_SAMPLE_POWER_OF_2; scale = ImageSizeUtils.computeImageSampleSize(imageSize, targetSize, decodingInfo.getViewScaleType(), powerOf2); } if (scale > 1 && loggingEnabled) { L.d(LOG_SUBSAMPLE_IMAGE, imageSize, imageSize.scaleDown(scale), scale, decodingInfo.getImageKey()); } Options decodingOptions = decodingInfo.getDecodingOptions(); decodingOptions.inSampleSize = scale; return decodingOptions; }
/** * Computes minimal sample size for downscaling image so result image size won't exceed max acceptable OpenGL * texture size.<br /> * We can't create Bitmap in memory with size exceed max texture size (usually this is 2048x2048) so this method * calculate minimal sample size which should be applied to image to fit into these limits. * * @param srcSize Original image size * @return Minimal sample size */ public static int computeMinImageSampleSize(ImageSize srcSize) { final int srcWidth = srcSize.getWidth(); final int srcHeight = srcSize.getHeight(); final int targetWidth = maxBitmapSize.getWidth(); final int targetHeight = maxBitmapSize.getHeight(); final int widthScale = (int) Math.ceil((float) srcWidth / targetWidth); final int heightScale = (int) Math.ceil((float) srcHeight / targetHeight); return Math.max(widthScale, heightScale); // max }
@Override public int getWidth() { return imageSize.getWidth(); }
@Override public int getHeight() { return imageSize.getHeight(); }
protected Options prepareDecodingOptions(ImageSize imageSize, ImageDecodingInfo decodingInfo) { ImageScaleType scaleType = decodingInfo.getImageScaleType(); ImageSize targetSize = decodingInfo.getTargetSize(); int scale = 1; if (scaleType != ImageScaleType.NONE) { boolean powerOf2 = scaleType == ImageScaleType.IN_SAMPLE_POWER_OF_2; scale = ImageSizeUtils.computeImageSampleSize(imageSize, targetSize, decodingInfo.getViewScaleType(), powerOf2); if (loggingEnabled) L.i(LOG_SABSAMPLE_IMAGE, imageSize, imageSize.scaleDown(scale), scale, decodingInfo.getImageKey()); } Options decodingOptions = decodingInfo.getDecodingOptions(); decodingOptions.inSampleSize = scale; return decodingOptions; }
/** Scales dimensions according to incoming scale. Returns new object. */ public ImageSize scale(float scale) { return new ImageSize((int) (width * scale), (int) (height * scale)); }
@Test public void testGetImageSizeScaleTo_useImageActualSize() throws Exception { // We layout the view to give it a width and height mView.measure(View.MeasureSpec.makeMeasureSpec(200, View.MeasureSpec.EXACTLY), View.MeasureSpec.makeMeasureSpec(200, View.MeasureSpec.EXACTLY)); mView.layout(0, 0, 200, 200); ImageSize expected = new ImageSize(200, 200); ImageSize result = ImageSizeUtils.defineTargetSizeForView(mImageAware, new ImageSize(590, 590)); Assertions.assertThat(result).isNotNull(); Assertions.assertThat(result.getWidth()).isEqualTo(expected.getWidth()); Assertions.assertThat(result.getHeight()).isEqualTo(expected.getHeight()); }
/** * Generates key for memory cache for incoming image (URI + size).<br /> * Pattern for cache key - <b>[imageUri]_[width]x[height]</b>. */ public static String generateKey(String imageUri, ImageSize targetSize) { return new StringBuilder(imageUri).append(URI_AND_SIZE_SEPARATOR).append(targetSize.getWidth()).append(WIDTH_AND_HEIGHT_SEPARATOR).append(targetSize.getHeight()).toString(); }
protected Bitmap considerExactScaleAndOrientaiton(Bitmap subsampledBitmap, ImageDecodingInfo decodingInfo, int rotation, boolean flipHorizontal) { Matrix m = new Matrix(); // Scale to exact size if need ImageScaleType scaleType = decodingInfo.getImageScaleType(); if (scaleType == ImageScaleType.EXACTLY || scaleType == ImageScaleType.EXACTLY_STRETCHED) { ImageSize srcSize = new ImageSize(subsampledBitmap.getWidth(), subsampledBitmap.getHeight(), rotation); float scale = ImageSizeUtils.computeImageScale(srcSize, decodingInfo.getTargetSize(), decodingInfo.getViewScaleType(), scaleType == ImageScaleType.EXACTLY_STRETCHED); if (Float.compare(scale, 1f) != 0) { m.setScale(scale, scale); if (loggingEnabled) L.i(LOG_SCALE_IMAGE, srcSize, srcSize.scale(scale), scale, decodingInfo.getImageKey()); } } // Flip bitmap if need if (flipHorizontal) { m.postScale(-1, 1); if (loggingEnabled) L.i(LOG_FLIP_IMAGE, decodingInfo.getImageKey()); } // Rotate bitmap if need if (rotation != 0) { m.postRotate(rotation); if (loggingEnabled) L.i(LOG_ROTATE_IMAGE, rotation, decodingInfo.getImageKey()); } Bitmap finalBitmap = Bitmap.createBitmap(subsampledBitmap, 0, 0, subsampledBitmap.getWidth(), subsampledBitmap.getHeight(), m, true); if (finalBitmap != subsampledBitmap) { subsampledBitmap.recycle(); } return finalBitmap; }
@Override public int getWidth() { return imageSize.getWidth(); }
@Override public int getHeight() { return imageSize.getHeight(); }
protected Options prepareDecodingOptions(ImageSize imageSize, ImageDecodingInfo decodingInfo) { ImageScaleType scaleType = decodingInfo.getImageScaleType(); int scale; if (scaleType == ImageScaleType.NONE) { scale = 1; } else if (scaleType == ImageScaleType.NONE_SAFE) { scale = ImageSizeUtils.computeMinImageSampleSize(imageSize); } else { ImageSize targetSize = decodingInfo.getTargetSize(); boolean powerOf2 = scaleType == ImageScaleType.IN_SAMPLE_POWER_OF_2; scale = ImageSizeUtils.computeImageSampleSize(imageSize, targetSize, decodingInfo.getViewScaleType(), powerOf2); } if (scale > 1 && loggingEnabled) { L.d(LOG_SUBSAMPLE_IMAGE, imageSize, imageSize.scaleDown(scale), scale, decodingInfo.getImageKey()); } Options decodingOptions = decodingInfo.getDecodingOptions(); decodingOptions.inSampleSize = scale; return decodingOptions; }
ImageSize getMaxImageSize() { DisplayMetrics displayMetrics = resources.getDisplayMetrics(); int width = maxImageWidthForMemoryCache; if (width <= 0) { width = displayMetrics.widthPixels; } int height = maxImageHeightForMemoryCache; if (height <= 0) { height = displayMetrics.heightPixels; } return new ImageSize(width, height); }
/** * Defines target size for image aware view. Size is defined by target * {@link com.nostra13.universalimageloader.core.imageaware.ImageAware view} parameters, configuration * parameters or device display dimensions.<br /> */ public static ImageSize defineTargetSizeForView(ImageAware imageAware, ImageSize maxImageSize) { int width = imageAware.getWidth(); if (width <= 0) width = maxImageSize.getWidth(); int height = imageAware.getHeight(); if (height <= 0) height = maxImageSize.getHeight(); return new ImageSize(width, height); }