Small improvement

app/src/main/java/eu/faircode/email/ContactInfo.java

@@ -548,7 +548,7 @@ public class ContactInfo {
                                         "." + info.type +
                                         (info.verified ? "_verified" : ""));
                         try (OutputStream os = new BufferedOutputStream(new FileOutputStream(output))) {
-                            info.bitmap.compress(Bitmap.CompressFormat.PNG, 90, os);
+                            info.bitmap.compress(Bitmap.CompressFormat.PNG, ImageHelper.DEFAULT_PNG_COMPRESSION, os);
                         }
                         Log.i("Avatar to cache=" + output.getName());
                     }
@@ -614,7 +614,7 @@ public class ContactInfo {
                 // Add to cache
                 File output = new File(dir, etag + "." + info.type);
                 try (OutputStream os = new BufferedOutputStream(new FileOutputStream(output))) {
-                    info.bitmap.compress(Bitmap.CompressFormat.PNG, 90, os);
+                    info.bitmap.compress(Bitmap.CompressFormat.PNG, ImageHelper.DEFAULT_PNG_COMPRESSION, os);
                 } catch (IOException ex) {
                     Log.e(ex);
                 }

app/src/main/java/eu/faircode/email/FragmentCompose.java

@@ -328,7 +328,6 @@ public class FragmentCompose extends FragmentBase {
     private int searchIndex = 0;
 
     static final int REDUCED_IMAGE_SIZE = 1440; // pixels
-    private static final int REDUCED_IMAGE_QUALITY = 90; // percent
     // http://regex.info/blog/lightroom-goodies/jpeg-quality
     private static final int COPY_ATTACHMENT_TIMEOUT = 60; // seconds
 
@@ -5590,7 +5589,7 @@ public class FragmentCompose extends FragmentBase {
 
                 File tmp = new File(file.getAbsolutePath() + ".tmp");
                 try (OutputStream out = new BufferedOutputStream(new FileOutputStream(tmp))) {
-                    if (!resized.compress(format, REDUCED_IMAGE_QUALITY, out))
+                    if (!resized.compress(format, ImageHelper.DEFAULT_PNG_COMPRESSION, out))
                         throw new IOException("compress");
                 } catch (Throwable ex) {
                     Log.w(ex);

app/src/main/java/eu/faircode/email/FragmentDialogEditImage.java

@@ -121,7 +121,7 @@ public class FragmentDialogEditImage extends FragmentDialogBase {
                         File file = attachment.getFile(context);
 
                         try (OutputStream os = new BufferedOutputStream(new FileOutputStream(file))) {
-                            bm.compress(Bitmap.CompressFormat.PNG, 90, os);
+                            bm.compress(Bitmap.CompressFormat.PNG, ImageHelper.DEFAULT_PNG_COMPRESSION, os);
                         }
 
                         db.attachment().setName(id, attachment.name, "image/png", file.length());

app/src/main/java/eu/faircode/email/FragmentDialogPrint.java

@@ -370,7 +370,7 @@ public class FragmentDialogPrint extends FragmentDialogBase {
                                         d.draw(canvas);
 
                                         Helper.ByteArrayInOutStream bos = new Helper.ByteArrayInOutStream();
-                                        bm.compress(Bitmap.CompressFormat.PNG, 90, bos);
+                                        bm.compress(Bitmap.CompressFormat.PNG, ImageHelper.DEFAULT_PNG_COMPRESSION, bos);
                                         uri = ImageHelper.getDataUri(bos.getInputStream(), "image/png");
                                     }
                                 } catch (Throwable ex) {

app/src/main/java/eu/faircode/email/ImageHelper.java

@@ -83,6 +83,7 @@ import java.util.concurrent.Semaphore;
 
 class ImageHelper {
     static final int DOWNLOAD_TIMEOUT = 15; // seconds
+    static final int DEFAULT_PNG_COMPRESSION = 90;
     private static final int MAX_PROBE = 128 * 1024; // bytes
     private static final int SLOW_CONNECTION = 2 * 1024; // Kbps
     private static final int MAX_BITMAP_SIZE = 100 * 1024 * 1024; // RecordingCanvas.MAX_BITMAP_SIZE
@@ -765,7 +766,7 @@ class ImageHelper {
         if (id >= 0) {
             File file = getCacheFile(context, id, source, ".png");
             try (OutputStream os = new BufferedOutputStream(new FileOutputStream(file))) {
-                bm.compress(Bitmap.CompressFormat.PNG, 90, os);
+                bm.compress(Bitmap.CompressFormat.PNG, ImageHelper.DEFAULT_PNG_COMPRESSION, os);
             }
         }
 

app/src/main/java/eu/faircode/email/OpenAI.java

@@ -311,7 +311,7 @@ public class OpenAI {
                                 try (InputStream is = new FileInputStream(file)) {
                                     Bitmap bm = ImageHelper.getScaledBitmap(is, null, null, SCALE2PIXELS);
                                     Helper.ByteArrayInOutStream bos = new Helper.ByteArrayInOutStream();
-                                    bm.compress(Bitmap.CompressFormat.PNG, 90, bos);
+                                    bm.compress(Bitmap.CompressFormat.PNG, ImageHelper.DEFAULT_PNG_COMPRESSION, bos);
                                     url = ImageHelper.getDataUri(bos.getInputStream(), "image/png");
                                 } catch (Throwable ex) {
                                     Log.w(ex);