feat: 5952 - better image compression for Prices (#6048)

Impacted files:
* `image_compute_container.dart`: added the compression quality parameter
* `background_task_image.dart`: added the compression quality and force quality parameters; same parameters as before for OxF images (quality 100, no forced compression for non cropped images)
* `background_task_add_price.dart`: always compress the proof image, with quality 80

packages/smooth_app/lib/background/background_task_add_price.dart

@@ -210,6 +210,8 @@ class BackgroundTaskAddPrice extends BackgroundTaskPrice {
       cropY1: cropY1,
       cropX2: cropX2,
       cropY2: cropY2,
+      compressQuality: 80,
+      forceCompression: true,
       overlayPainter: offsets.isEmpty
           ? null
           : EraserPainter(

packages/smooth_app/lib/background/background_task_image.dart

@@ -246,20 +246,24 @@ class BackgroundTaskImage extends BackgroundTaskUpload {
     required final int cropX2,
     required final int cropY2,
     final CustomPainter? overlayPainter,
+    required final int compressQuality,
+    required final bool forceCompression,
   }) async {
     final ui.Image full = await loadUiImage(
         await (await BackgroundTaskUpload.getFile(fullPath)).readAsBytes());
-    if (cropX1 == 0 &&
-        cropY1 == 0 &&
-        cropX2 == _cropConversionFactor &&
-        cropY2 == _cropConversionFactor &&
-        rotationDegrees == 0) {
-      if (!isPictureBigEnough(full.width, full.height)) {
-        return null;
-      }
-      // in that case, no need to crop
-      if (overlayPainter == null) {
-        return fullPath;
+    if (!forceCompression) {
+      if (cropX1 == 0 &&
+          cropY1 == 0 &&
+          cropX2 == _cropConversionFactor &&
+          cropY2 == _cropConversionFactor &&
+          rotationDegrees == 0) {
+        if (!isPictureBigEnough(full.width, full.height)) {
+          return null;
+        }
+        // in that case, no need to crop
+        if (overlayPainter == null) {
+          return fullPath;
+        }
       }
     }
 
@@ -296,6 +300,7 @@ class BackgroundTaskImage extends BackgroundTaskUpload {
     await saveJpeg(
       file: await BackgroundTaskUpload.getFile(croppedPath),
       source: cropped,
+      quality: compressQuality,
     );
     return croppedPath;
   }
@@ -314,6 +319,8 @@ class BackgroundTaskImage extends BackgroundTaskUpload {
       cropY1: cropY1,
       cropX2: cropX2,
       cropY2: cropY2,
+      compressQuality: 100,
+      forceCompression: false,
     );
     if (path == null) {
       // TODO(monsieurtanuki): maybe something more refined when we dismiss the picture, like alerting the user, though it's not supposed to happen anymore from upstream.

packages/smooth_app/lib/helpers/image_compute_container.dart

@@ -14,12 +14,14 @@ class _ImageComputeContainer {
     required this.rawData,
     required this.width,
     required this.height,
+    required this.quality,
   }) : rootIsolateToken = ui.RootIsolateToken.instance;
 
   final File file;
   final ByteData rawData;
   final int width;
   final int height;
+  final int quality;
   final ui.RootIsolateToken? rootIsolateToken;
 
   bool get isIsolatePossible => rootIsolateToken != null;
@@ -47,6 +49,8 @@ Future<void> saveBmp({
     rawData: rawData,
     width: source.width,
     height: source.height,
+    // whatever, we don't use it for bmp
+    quality: 100,
   );
   if (container.isIsolatePossible) {
     try {
@@ -68,6 +72,7 @@ Future<void> saveBmp({
 Future<void> saveJpeg({
   required final File file,
   required final ui.Image source,
+  required final int quality,
 }) async {
   final ByteData? rawData = await source.toByteData(
     format: ui.ImageByteFormat.rawRgba,
@@ -80,6 +85,7 @@ Future<void> saveJpeg({
     rawData: rawData,
     width: source.width,
     height: source.height,
+    quality: quality,
   );
   if (container.isIsolatePossible) {
     try {
@@ -148,7 +154,7 @@ Future<void> _saveJpeg(
   final Uint8List jpegData = await FlutterImageCompress.compressWithList(
     bmpData,
     autoCorrectionAngle: false,
-    quality: 100,
+    quality: container.quality,
     format: CompressFormat.jpeg,
     minWidth: container.width,
     minHeight: container.height,