Why the image gets trimmed off from the top? - image

Question

The code works, but the images get trimmed off from the top. I have tried everything, but I still can't figure it out.
Can someone please take a look at it?
Thanks in advance.
Code:
public class ScalingUtilities {
public static Bitmap decodeResource(Resources res, int resId, int ReqWidth, int ReqHeight, ScalingLogic scalingLogic) {
Options options = new Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeResource(res, resId, options);
options.inJustDecodeBounds = false;
options.inSampleSize = calculateSampleSize(options.outWidth, options.outHeight, ReqWidth,
ReqHeight, scalingLogic);
Bitmap unscaledBitmap = BitmapFactory.decodeResource(res, resId, options);
return unscaledBitmap;
}
public static Bitmap decode_imagePath_String(String image_path, int ReqWidth, int ReqHeight, ScalingLogic scalingLogic) {
Options options = new Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeFile(image_path, options);
options.inJustDecodeBounds = false;
options.inSampleSize = calculateSampleSize(options.outWidth, options.outHeight, ReqWidth,
ReqHeight, scalingLogic);
Bitmap unscaledBitmap = BitmapFactory.decodeFile(image_path, options);
return unscaledBitmap;
}
public static Bitmap createScaledBitmap(Bitmap unscaledBitmap, int ReqWidth, int ReqHeight,
ScalingLogic scalingLogic) {
Rect srcRect = calculateSrcRect(unscaledBitmap.getWidth(), unscaledBitmap.getHeight(),
ReqWidth, ReqHeight, scalingLogic);
Rect dstRect = calculateDstRect(unscaledBitmap.getWidth(), unscaledBitmap.getHeight(),
ReqWidth, ReqHeight, scalingLogic);
Bitmap scaledBitmap = Bitmap.createBitmap(dstRect.width(), dstRect.height(),
Config.RGB_565);
Canvas canvas = new Canvas(scaledBitmap);
canvas.drawBitmap(unscaledBitmap, srcRect, dstRect, new Paint(Paint.FILTER_BITMAP_FLAG));
return scaledBitmap;
}
public static enum ScalingLogic {
CROP, FIT
}
public static int calculateSampleSize(int srcWidth, int srcHeight, int ReqWidth, int ReqHeight,
ScalingLogic scalingLogic) {
if (scalingLogic == ScalingLogic.FIT) {
final float srcAspect = (float)srcWidth / (float)srcHeight;
final float dstAspect = (float)ReqWidth / (float)ReqHeight;
if (srcAspect > dstAspect) {
return srcWidth / ReqWidth;
} else {
return srcHeight / ReqHeight;
}
} else {
final float srcAspect = (float)srcWidth / (float)srcHeight;
final float dstAspect = (float)ReqWidth / (float)ReqHeight;
if (srcAspect > dstAspect) {
return srcHeight / ReqHeight;
} else {
return srcWidth / ReqWidth;
}
}
}
public static Rect calculateSrcRect(int srcWidth, int srcHeight, int ReqWidth, int ReqHeight,
ScalingLogic scalingLogic) {
if (scalingLogic == ScalingLogic.CROP) {
final float srcAspect = (float)srcWidth / (float)srcHeight;
final float dstAspect = (float)ReqWidth / (float)ReqHeight;
if (srcAspect > dstAspect) {
final int srcRectWidth = (int)(srcHeight * dstAspect);
final int srcRectLeft = (srcWidth - srcRectWidth) / 2;
return new Rect(srcRectLeft, 0, srcRectLeft + srcRectWidth, srcHeight);
} else {
final int srcRectHeight = (int)(srcWidth / dstAspect);
final int scrRectTop = (int)(srcHeight - srcRectHeight) / 2;
return new Rect(0, scrRectTop, srcWidth, scrRectTop + srcRectHeight);
}
} else {
return new Rect(0, 0, srcWidth, srcHeight);
}
}
public static Rect calculateDstRect(int srcWidth, int srcHeight, int ReqWidth, int ReqHeight,
ScalingLogic scalingLogic) {
if (scalingLogic == ScalingLogic.FIT) {
final float srcAspect = (float)srcWidth / (float)srcHeight;
final float dstAspect = (float)ReqWidth / (float)ReqHeight;
if (srcAspect > dstAspect) {
return new Rect(0, 0, ReqWidth, (int)(ReqWidth / srcAspect));
} else {
return new Rect(0, 0, (int)(ReqHeight * srcAspect), ReqHeight);
}
} else {
return new Rect(0, 0, ReqWidth, ReqHeight);
}
}
}
I very appreciate it...

Answer 1

In calculateSampleSize, you are returning int. Depending on the ratio of your image, this return value may very well be 0 and options.inSampleSize will be 0, so no scaling will take place.
Then the decode will decode with the size values you passed, so cropping will occur. I think that you need to use the density parameters instead. Please take a look at this post