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Merge pull request #126 from brarcher/scale-barcode

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Scale barcode height to match reduced width
This commit is contained in:
Branden Archer
2017-07-12 22:14:03 -04:00
committed by GitHub
parent b6190d3250 824a72b156
commit f4522fb17d
1 changed files with 14 additions and 6 deletions
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20
app/src/main/java/protect/card_locker/BarcodeImageWriterTask.java
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@@ -21,7 +21,7 @@ import java.lang.ref.WeakReference;
class BarcodeImageWriterTask extends AsyncTask<Void, Void, Bitmap>
{
private static final String TAG = "LoyaltyCardLocker";
private static final int MAX_WIDTH = 600;
private static final int MAX_WIDTH = 500;
private final WeakReference<ImageView> imageViewReference;
private final String cardId;
@@ -29,7 +29,7 @@ class BarcodeImageWriterTask extends AsyncTask<Void, Void, Bitmap>
private final int imageHeight;
private final int imageWidth;
public BarcodeImageWriterTask(ImageView imageView, String cardIdString,
BarcodeImageWriterTask(ImageView imageView, String cardIdString,
BarcodeFormat barcodeFormat)
{
// Use a WeakReference to ensure the ImageView can be garbage collected
@@ -37,11 +37,19 @@ class BarcodeImageWriterTask extends AsyncTask<Void, Void, Bitmap>
cardId = cardIdString;
format = barcodeFormat;
imageHeight = imageView.getHeight();
// No matter how long the window is, there is only so much space
// needed for the barcode. Put a limit on it to reduce memory usage
imageWidth = Math.min(imageView.getWidth(), MAX_WIDTH);
if(imageView.getWidth() < MAX_WIDTH)
{
imageHeight = imageView.getHeight();
imageWidth = imageView.getWidth();
}
else
{
// Scale down the image to reduce the memory needed to produce it
imageWidth = MAX_WIDTH;
double ratio = (double)MAX_WIDTH / (double)imageView.getWidth();
imageHeight = (int)(imageView.getHeight() * ratio);
}
}
public Bitmap doInBackground(Void... params)