Peter Siegmund
efd34616b1
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Signed-off-by: Peter Siegmund <developer@mars3142.org>
45 lines
1.0 KiB
Dart
45 lines
1.0 KiB
Dart
import 'package:image/image.dart' as img;
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import 'package:injectable/injectable.dart';
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@singleton
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class ImageResizer {
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static const int maxWidth = 480;
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static const int maxHeight = 320;
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img.Image resizeToFit(img.Image image) {
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final w = image.width;
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final h = image.height;
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if (w <= maxWidth && h <= maxHeight) {
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return image;
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}
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final aspectRatio = w / h;
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int newWidth;
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int newHeight;
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if (w > h) {
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newWidth = maxWidth;
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newHeight = (maxWidth / aspectRatio).round();
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if (newHeight > maxHeight) {
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newHeight = maxHeight;
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newWidth = (maxHeight * aspectRatio).round();
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}
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} else {
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newHeight = maxHeight;
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newWidth = (maxHeight * aspectRatio).round();
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if (newWidth > maxWidth) {
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newWidth = maxWidth;
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newHeight = (maxWidth / aspectRatio).round();
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}
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}
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return img.copyResize(
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image,
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width: newWidth,
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height: newHeight,
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interpolation: img.Interpolation.linear,
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);
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}
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}
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