File	Doc	Category	Size	Date	Package
BitmapUtils.java	API Doc	Android 5.1 API	5201	Thu Mar 12 22:22:50 GMT 2015	com.android.bitmap.util

BitmapUtils

• java.lang.Object

Fields Summary

Constructors Summary

Methods Summary
public static void	calculateCroppedSrcRect(int srcW, int srcH, int dstW, int dstH, int dstSliceH, int sampleSize, float vertSliceFrac, boolean absoluteFrac, float verticalMultiplier, android.graphics.Rect outRect) Calculate a center-crop rectangle for the given input and output parameters. The output rectangle to use is written in the given outRect. param srcW the source width param srcH the source height param dstW the destination width param dstH the destination height param dstSliceH the height extent (in destination coordinates) to exclude when cropping. You would typically pass dstH, unless you are trying to normalize different items to the same vertical crop range. param sampleSize a scaling factor that rect calculation will only use if it's more aggressive than regular scaling param vertSliceFrac vertical slice fraction determines the vertical center point for the crop rect. Range is from [0.0, 1.0]. To perform a vertically centered crop, use 0.5. Otherwise, see absoluteFrac. param absoluteFrac determines how the vertSliceFrac affects the vertical center point. If this parameter is true, the vertical center of the resulting output rectangle will be exactly [vertSliceFrac * srcH], with care taken to keep the bounds within the source rectangle. If this parameter is false, the vertical center will be calculated so that the values of vertSliceFrac from 0.0 to 1.0 will linearly cover the entirety of the source rectangle. param verticalMultiplier an optional multiplier that will alter the output Rect's aspect ratio to be this much taller in the event that y is the limiting dimension param outRect a Rect to write the resulting crop coordinates into if (sampleSize < 1) { sampleSize = 1; } final float regularScale; final float wScale = (float) srcW / dstW; final float hScale = (float) srcH / dstH; if (hScale < wScale) { regularScale = hScale / verticalMultiplier; } else { regularScale = wScale; } final float scale = Math.min(sampleSize, regularScale); final int srcCroppedW = Math.round(dstW * scale); final int srcCroppedH = Math.round(dstH * scale); final int srcCroppedSliceH = Math.round(dstSliceH * scale); final int srcHalfSliceH = Math.min(srcCroppedSliceH, srcH) / 2; outRect.left = (srcW - srcCroppedW) / 2; outRect.right = outRect.left + srcCroppedW; final int centerV; if (absoluteFrac) { final int minCenterV = srcHalfSliceH; final int maxCenterV = srcH - srcHalfSliceH; centerV = Math.max(minCenterV, Math.min(maxCenterV, Math.round(srcH * vertSliceFrac))); } else { centerV = Math .round(Math.abs(srcH - srcCroppedSliceH) * vertSliceFrac + srcHalfSliceH); } outRect.top = centerV - srcCroppedH / 2; outRect.bottom = outRect.top + srcCroppedH;
public static void	calculateCroppedSrcRect(int srcW, int srcH, int dstW, int dstH, android.graphics.Rect outRect) param srcW param srcH param dstW param dstH param outRect calculateCroppedSrcRect(srcW, srcH, dstW, dstH, Integer.MAX_VALUE, outRect);
public static void	calculateCroppedSrcRect(int srcW, int srcH, int dstW, int dstH, int sampleSize, android.graphics.Rect outRect) if (sampleSize < 1) { sampleSize = 1; } final float regularScale = Math.min( (float) srcW / dstW, (float) srcH / dstH); final float scale = Math.min(sampleSize, regularScale); final int srcCroppedW = Math.round(dstW * scale); final int srcCroppedH = Math.round(dstH * scale); outRect.left = (srcW - srcCroppedW) / 2; outRect.right = outRect.left + srcCroppedW; outRect.top = (srcH - srcCroppedH) / 2; outRect.bottom = outRect.top + srcCroppedH;