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Dart Image Library provides server and web apps the ability to load, manipulate, and save images with various image file formats.

4.1.7 - February 10, 2024 #

  • JPEG images will finish decoding even if the file is incomplete or has errors.
  • Fix performance bug with Image.getBytes

4.1.6 - January 31, 2024 #

  • Incomplete or JPEGs with errors will now finish loading.

4.1.5 - January 31, 2024 #

  • Optimize copying bytes in Image.fromBytes
  • 2 channel images are treated as Luminance-Alpha

4.1.4 - January 12, 2024 #

  • Fix Image.getBytes when ChannelOrder has a different number of channels than the image.
  • copyResize command accepts maintainAspect and backgroundColor args.
  • Fix EXIF decoder when image has bad IFD offsets.
  • Improve drawString handling of new line characters when wrap is true.
  • Improve GIF animation decoding when each frame has its own palette.

4.1.3 - September 25, 2023 #

  • Fix crash in copyResize for non-nearest interpolation modes.

4.1.2 #

  • No changes, removing unnecessary files in 4.1.1.

4.1.1 #

  • Add maintainAspect and backgroundColor to copyResize to resize width and height of an image, without stretching the source (using background color to pad).
  • drawString will word-wrap even when x or y is set.
  • Don't clamp brightness in adjustColor.

4.1.0 #

  • Update pub dependencies.

4.0.18 - #

  • Fix reading 64-bit double EXIF values.

4.0.17 - May 06, 2023 #

  • Fix resizing multi-frame palette images.
  • Fix transparency issue with encodeGif.

4.0.16 - April 27, 2023 #

  • Fix GIF decoder not decoding some animation files transparency and frame duration.
  • Fix default rowStride for Image.fromBytes.

4.0.15 - February 11, 2023 #

  • Fix JPEG encoder for non uint8 format images.

4.0.14 - February 11, 2023 #

  • Use Image.backgroundColor for copyRotate, copyCropCircle, and other functions that reveal background pixels.

4.0.13 - January 30, 2023 #

  • Fix transform functions for palette images.

4.0.12 - January 23, 2023 #

  • Fix EXIF parsing little endian data
  • Fix bounds errors with filter functions and palette images.
  • Fix BMP encoding palette rgba images by converting them to 32-bit rgba.

4.0.11 - January 22, 2023 #

  • Add decodeJpgExif and injectJpgExif functions to process JPG exif data without needing to decode the image.
  • Fix EXIF parse exception from empty strings.
  • Fix EXIF string data not writing out null character.

4.0.10 - January 1, 2023 #

  • Fix last-minute typo from previous release.

4.0.9 - January 1, 2023 #

  • Fix offset error with BMP encoder for images with < 8 bits per pixel
  • Improve quality of converting 3-channel image to 1-channel.

4.0.8 - January 08, 2023 #

  • Fix ChannelOrder.bgra.
  • Add Image.hasAlpha getter property that will be true if the Image has an alpha channel.

4.0.7 - January 05, 2023 #

  • Fix Image.getRangeIterator skipping last line.

4.0.6 - January 04, 2023 #

  • Image.remapChannels(ChannelOrder order) to remap the order of channels from rgb to bgr, etc.
  • Image.getBytes({ChannelOrder? order}) will return the image data, optionally reordering the channels.
  • Image.fromBytes can take an optional ChannelOrder? order named arg to specify the channel order of the input data.

4.0.5 - January 01, 2023 #

  • Improved antialiasing for drawLine
  • Add antialias arg for drawCircle, fillCircle.
  • Added radius argument to drawRect, fillRect, copyCrop, and copyResizeCropSquare to support rounded rectangles.
  • Add Image.getPixelClamped method.
  • Added TGA decoder 8-bit, 16-bit, 32-bit, and RLE compression modes.

4.0.4 - December 31, 2022 #

  • Fix for animated PNG with palette images, which needed a global palette for all frames.
  • Fix TIFF encoder for palette images.
  • Cleaned up EXIF classes.

4.0.3 - December 30, 2022 #

  • Fix for encoding GIF transparency.

4.0.2 - December 30, 2022 #

  • No changes, dart formatted code and fix documentation link.

4.0.1 - December 30, 2022 #

  • Use strict analyzer settings, clean up warnings.

4.0.0 - December 30, 2022 #

  • Major update of the Dart Image Library. Includes support for:
    • Major overhaul of the API. Dart has changed a lot in the 10 years since this library was written, so the API has been modernized.
    • Flexible ImageData, with support for 1, 2, 4, 8, 16, and 32 bit images, and 1-4 channels per pixel.
    • 16, 32, and 64-bit floating-point format images.
    • 8, 16, and 32-bit integer format images.
    • Palette images with 1, 2, 4, and 8-bit colors.
    • Improved pixel access API.
    • Merged HDR and Animation functionality into the single Image class.
    • New Command API with support for executing on Isolate threads.
    • New filters and drawing commands.

3.3.0 - December 29, 2022 #

  • Improved EXIF data management
  • Fix character code issue with BitmapFont.
  • This is the last 3.x update before the big 4.0 release.

3.2.2 - October 15, 2022 #

  • Fix transparency issue with animated GIF images.

3.2.1 - October 15, 2022 #

  • Fixes for APNG: fix exception from some APNG files, and some frames were not composited correctly.

3.2.0 - May 18, 2022 #

  • Update SDK dependency to >2.15.0 and XML package dependency to >6.0.0

3.1.3 - February 17, 2022 #

  • Optimize Image.getWhiteBalance function, add asDouble argument to return double value.

3.1.2 - February 17, 2022 #

  • Add BmpEncoder to encode BMP images, along with encodeBmp function. Currently, only 24-bit or 32-bit BMP images will be encoded.

3.1.1 - January 12, 2022 #

  • Fix error loading some tiff images
  • Fix jpeg comments to support non-strict utf8 text

3.1.0 - November 30, 2021 #

  • Update archive version requirement
  • Fix JPGDecoder to return correct nullable types.

3.0.8 - October 02, 2021 #

  • Fix WebP lossless decoder.

3.0.7 - September 29, 2021 #

  • Change LICENSE to MIT.

3.0.6 - September 29, 2021 #

  • Clean up LICENSE file, moving other license references to LICENSE-other.

3.0.5 #

  • Fix copyResize for landscape oriented images.

3.0.4 #

  • Fix Dart warnings from the previous release.

3.0.3 #

  • Fix #320 - copyResize incorrectly applies linear and cubic.
  • Apply EXIF orientation when decoding JPEG images.

3.0.2 #

  • Dithering support for GIF encoder.
  • Fix PNGEncoder issue if addFrame is called directly instead than encodeImage or encodeAnimation.
  • Optimization for drawImage.

3.0.1 #

  • Improve NeuralQuantizer to fix issue encoding small GIF images.
  • Code cleanup resolving lint issues.

3.0.0 #

  • Migrate to null safety.

2.1.19 - November 11, 2020 #

  • Refactor HdrImage to better support more diverse formats, used for Hdr Tiff decoding.
  • TiffDecoder will maintain Tag data after decoding, allowing them to be read to process image metadata.
  • Added TiffEncoder. Still needs work to be able to add tag data to an encoded image.
  • Clean up print statements from BmpDecoder.

2.1.18 - September 25, 2020 #

  • Added 64-bit float format to TIFF decoder.
  • Fixed issues with TiffDecoder.decodeHdrImage.
  • Added range clamping to copyCrop to avoid out-of-bound errors.
  • Variable FPS for animated GIF encoding.

2.1.17 - September 20, 2020 #

  • Added 32-bit float and 16-bit half-float formats to the TIFF decoder.

2.1.16 - September 19, 2020 #

  • Downgrade Meta dependency to be compatible with flutter_test in the stable channel.

2.1.15 - September 13, 2020 #

  • Fix Image.getBytes for cropping images
  • Fix bakeOrientation EXIF data
  • Added ICO format decoder
  • Fix JpegData.validate for unintended exceptions with non jpeg images

2.1.14 - June 14, 2020 #

  • Update xml dependency to 4.2.0

2.1.13 - May 21, 2020 #

  • Improvements for JPEG EXIF decoding
  • Fix for the GIF animation decoder
  • APNG encoder time delay correctly to milliseconds

2.1.12 - January 14, 2020 #

  • drawChar now uses color parameter.
  • Fix index out of range bug in drawImage.
  • Fix transparency with animated WebP images.

2.1.11 - December 30, 2019 #

  • Fix GIF animation loopCount encoding. Some viewers were not seeing the repeat count correctly.
  • Resolve analysis warnings.

2.1.10 - December 04, 2019 #

  • Applied Pub's Health suggestions.
  • Optimize use of slow typed_data methods.
  • Add drawStringCentered function
  • Add fillCircle function
  • Fix drawLine thickness for axis-aligned lines

2.1.9 - November 15, 2019 #

  • JpegDecoder optimizations. Decoding an 8k jpeg went from 2048ms to 1340ms.

2.1.8 - November 05, 2019 #

  • Fix issue with XML parsing for font files not reading some files
  • Fix bug with trim function for non-transparent trim mode

2.1.7 - October 30, 2019 #

  • Add ICO and CUR encoder.
  • Fix BMP decoder for top-down BMP image files.

2.1.6 - October 29, 2019 #

  • Add BMP decoder, currently only supporting 24-bit and 32-bit non compressed BMP images. (Thanks Ryan Kauk)

2.1.5 #

  • Updated some tests to use test-syntax.
  • Fixed null value in GifEncoder.
  • Added Dart syntax highlighting in the readme file.
  • Formatted package using dartfmt.
  • Fixed "Unnecessary new" and other Dart analyzer warnings.
  • Added the samplingFactor parameter to GIF encoding, which allows to significantly speed up encoding times of GIF encoding.

2.1.4 - June 01, 2019 #

  • Optimize fillRect, drawPixel, and other drawing functions when opaque colors are used.

2.1.3 - May 26, 2019 #

  • Revert the internal color format to #AABBGGRR.

2.1.2 - May 25, 2019 #

  • Fix crash decoding some Jpeg images.
  • Fix infinite recursion crash with fillFlood when fill color is the same as the start pixel color.

2.1.1 - May 22, 2019 #

  • Fix typo and missing license in license file.

2.1.0 - May 15, 2019 #

  • Big API clean-up to bring it up to a more modern Dart syntax.

2.0.9 - May 10, 2019 #

  • Use strict dartanalysys settings and clean up code.

2.0.8 - May 8, 2019 #

  • Add ability to quantize an image to any number of colors.
  • Optimizations for the JPEG decoder.
  • Use #AARRGGBB for colors instead of #AABBGGRR, to be compatible with Flutter image class.
  • Add floodfill drawing function.
  • CopyRectify to transform an arbitrary quad to the full image.
  • Improve performance of CopyResize.

2.0.7 - February 5, 2019 #

  • Improve JPEG decoding performance.
  • Decode and encode ICC profile data from PNG images.

2.0.6 - January 26, 2019 #

  • bakeOrientation will clear the image's exif orientation properties.
  • copyResize will correctly maintain the image's orientation.

2.0.5 - December 1, 2018 #

  • Added APNG (animated PNG) encoding.
  • Optimized drawString function.

2.0.3 - June 6, 2018 #

  • copyResize can maintain aspect ratio when resizing height by using -1 for the width.
  • Added example for loading and processing images in an isolate.

2.0.2 - June 1, 2018 #

  • Re-added decoding of orientation exif value from jpeg images.
  • Added bake_orientation function, which will rotate an image so that it physically matches its orientation exif value, useful for rotating an image prior to exporting it to a format that does not support exif data.

2.0.1 - May 28, 2018 #

Fix for bad jpeg files when encoding EXIF data.

2.0.0 - May 22, 2018 #

Remove the use of Dart 1 upper-case constants. Update SDK dependency to a 2.0 development release.

1.1.33 - May 16, 2018 #

Maintain EXIF data from JPEG images.

1.1.32 - May 9, 2018 #

Remove the use of part and part of in the main library.

1.1.30 - March 10, 2018 #

Update pubspec to account for the new version of xml package that has been published.

1.1.29 - September 18, 2017 #

  • Add fixes for strong mode support.

1.1.28 - May 27, 2017 #

  • Update pubspec to fix recent pub issues.
  • Rename changelog.txt to CHANGELOG.md.
  • Fix for 8-bit PNG decoding.

1.1.27 - May 14, 2017 #

  • Fix crash decoding some jpeg images.

1.1.24 - January 23, 2015 #

  • PVR encoding/decoding
  • Fix 16-bit tiff decoding

1.1.23 - September 15, 2014 #

  • Fix alpha for PSD images.

1.1.22 - July 31, 2014 #

  • Various bug fixes

1.1.21 - June 19, 2014 #

  • Add drawImage function
  • Update XML dependency to 2.0.0

1.1.20 - April 26, 2014 #

  • Fix OpenEXR decoder for dart2js

1.1.19 - April 15, 2014 #

  • OpenEXR fixes.

1.1.18 - April 06, 2014 #

  • Added OpenEXR format decoder.

1.1.17 - April 02, 2014 #

  • Add Photoshop PSD format decoder

1.1.16 - March 24, 2014 #

  • Fix JPEG encoder for compression quality < 100.

1.1.15 - March 10, 2014 #

  • Update to new version of archive.

1.1.14 - February 26, 2014 #

  • Optimizations

1.1.13 - February 16, 2014 #

  • Added TIFF decoder

1.1.10 - February 11, 2014 #

  • Added APNG animated PNG decoding support.
  • Improved JPEG decoding performance
  • Various bug fixes

1.1.8 - February 01, 2014 #

  • Added GIF decoding support, including animated gifs.

1.1.7 - January 28, 2014 #

  • Added WebP decoding support, included animated WebP.
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Dart Image Library provides server and web apps the ability to load, manipulate, and save images with various image file formats.

Repository (GitHub)
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Documentation

Documentation
API reference

License

MIT (LICENSE)

Dependencies

archive, meta, xml

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