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Merge pull request #603 from alexbakker/resize-qr-image

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Resize images to a max res of 640x480 before scanning for QR codes
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Michael Schättgen 2020-11-07 21:06:11 +01:00 • committed by GitHub
commit a91339de73
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2 changed files with 33 additions and 0 deletions
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31
app/src/main/java/com/beemdevelopment/aegis/helpers/BitmapHelper.java Normal file
View file

@ -0,0 +1,31 @@
package com.beemdevelopment.aegis.helpers;
import android.graphics.Bitmap;
public class BitmapHelper {
private BitmapHelper() {
}
/**
* Scales the given Bitmap to the given maximum width/height, while keeping the aspect ratio intact.
*/
public static Bitmap resize(Bitmap bitmap, int maxWidth, int maxHeight) {
if (maxHeight <= 0 || maxWidth <= 0) {
return bitmap;
}
float maxRatio = (float) maxWidth / maxHeight;
float ratio = (float) bitmap.getWidth() / bitmap.getHeight();
int width = maxWidth;
int height = maxHeight;
if (maxRatio > 1) {
width = (int) ((float) maxHeight * ratio);
} else {
height = (int) ((float) maxWidth / ratio);
}
return Bitmap.createScaledBitmap(bitmap, width, height, true);
}
}

2
app/src/main/java/com/beemdevelopment/aegis/ui/MainActivity.java
View file

@ -29,6 +29,7 @@ import com.beemdevelopment.aegis.Preferences;
import com.beemdevelopment.aegis.R; import com.beemdevelopment.aegis.R;
import com.beemdevelopment.aegis.SortCategory; import com.beemdevelopment.aegis.SortCategory;
import com.beemdevelopment.aegis.ViewMode; import com.beemdevelopment.aegis.ViewMode;
import com.beemdevelopment.aegis.helpers.BitmapHelper;
import com.beemdevelopment.aegis.helpers.FabScrollHelper; import com.beemdevelopment.aegis.helpers.FabScrollHelper;
import com.beemdevelopment.aegis.helpers.PermissionHelper; import com.beemdevelopment.aegis.helpers.PermissionHelper;
import com.beemdevelopment.aegis.otp.GoogleAuthInfo; import com.beemdevelopment.aegis.otp.GoogleAuthInfo;
@ -310,6 +311,7 @@ public class MainActivity extends AegisActivity implements EntryListView.Listene
try (InputStream inputStream = getContentResolver().openInputStream(inputFile)) { try (InputStream inputStream = getContentResolver().openInputStream(inputFile)) {
bitmap = BitmapFactory.decodeStream(inputStream, null, bmOptions); bitmap = BitmapFactory.decodeStream(inputStream, null, bmOptions);
bitmap = BitmapHelper.resize(bitmap, 640, 480);
} }
int[] intArray = new int[bitmap.getWidth() * bitmap.getHeight()]; int[] intArray = new int[bitmap.getWidth() * bitmap.getHeight()];