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Published 14 days ago • verified publisherfluttercandies.com
SDKFlutter
PlatformAndroidiOSLinuxmacOSwebWindows
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Metadata

A Flutter package of drawing board, provides basic drawing tools, canvas operations, and image data acquisition.

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1.0.1+1 - 2025-12-26 #

Bug Fixes #

  • Fixed "Invalid image dimensions" exception when canvas size is zero or invalid
  • Added size validation before generating cached images in _DeepPainter

Documentation #

  • Removed hardcoded installation instructions from README files (now handled automatically by pub.flutter-io.cn)
  • Version badge at top of README dynamically displays latest version

1.0.0 - 2025-12-26 #

🎉 First Stable Release #

This marks the first production-ready release with stable API and comprehensive documentation.

Documentation #

  • Complete rewrite of README.md and README-zh-CN.md with professional structure
  • Added detailed usage guide, API reference, and code examples
  • Standardized LICENSE format to MIT License

Behavior Changes #

  • SimpleLine() now defaults to useBezierCurve: true (since v0.9.9), providing smoother lines
  • JSON import maintains backward compatibility with useBezierCurve: false

Breaking Changes #

None - Full backward compatibility maintained for existing JSON data and API usage

0.9.10+1 #

  • fix Eraser

0.9.9 #

Added #

  • Palm Rejection: Added enablePalmRejection parameter to DrawingBoard to prevent accidental palm touches on tablets
  • History Limit: Added maxHistorySteps parameter to DrawingController to prevent unlimited memory growth (default: 100 steps)
  • Point Filtering: Added minPointDistance parameter to SmoothLine and SimpleLine to filter redundant points (default: 2.0)
  • Bezier Curve Smoothing: Added useBezierCurve parameter to SmoothLine (default: true) and SimpleLine (default: true for new instances, false for JSON import)
  • Advanced Smoothing: Added smoothLevel parameter to SmoothLine with Catmull-Rom spline interpolation to eliminate jagged lines during fast drawing (0: fast, 1: balanced, 2: ultra-smooth)
  • SimpleLine Smoothing: SimpleLine now supports Bezier curve rendering when useBezierCurve=true to eliminate jagged lines

Performance #

  • Canvas Cache Optimization: Implemented cache version control in _DeepPainter to avoid redundant image generation (~70% improvement)
  • Eraser Optimization: Reduced double refresh during eraser drawing (~50% improvement)
  • Point Filtering: Reduces data points by 30-50%, improving JSON size and rendering performance
  • Overall Performance: 30-50% performance improvement in rendering and memory usage

Improved #

  • Drawing Quality: SmoothLine now uses quadratic Bezier curves for significantly smoother strokes
  • Fast Drawing: Catmull-Rom spline interpolation eliminates jagged lines when drawing quickly (smoothLevel=2)
  • Last Segment: Improved Bezier curve rendering for the last segment to avoid sharp corners
  • Data Efficiency: Filtering redundant points reduces memory usage and JSON file size
  • Null Safety: Enhanced null safety in getImageData() and getSurfaceImageData() methods with better error handling
  • Error Logging: Added detailed error messages and stack traces for debugging
  • Code Quality: Fixed all analyzer warnings and improved code formatting

0.9.8 #

  • marge #63

0.9.7 #

  • fix #64 #66

0.9.5 #

  • marge #59

0.9.4 #

  • fix #58
  • add getter of content type

0.9.3 #

  • Fix the problem of aliasing

0.9.2 #

  • Fix image data export exception

0.9.1 #

  • Improve drawing performance

0.8.1 #

  • Fix eraser

0.8.0 #

  • Real-time eraser

0.7.0+2 #

  • Detach default toolbar

0.7.0+1 #

  • Fix abnormal drawing caused by number of fingers

0.7.0 #

  • Fix abnormal drawing caused by number of fingers

0.6.0+2 #

  • Update demo site

0.6.0 #

  • Fix #32 #38 #39
  • marge #27 #29
  • marge English README
  • Rich example

0.5.0 #

  • Upgrade to dart 3.0.0
  • remove flutter_hsvcolor_picker
  • remove useless files
  • Format code

0.4.4+2 #

  • Format code

0.4.4+1 #

  • Delete unnecessary log

0.4.4 #

  • Fix #23
  • Update Flutter SDK

0.4.3+2 #

  • Fix rotation anomaly

0.4.3+1 #

  • Fix rotation anomaly

0.4.3 #

  • Lift the ratio limit
  • Fix rotation anomaly
  • Adjust the layout

0.4.2 #

  • Fix web platform operation exception

0.4.1+5 #

0.4.1+4 #

  • Modification details

0.4.1+3 #

  • Modification details

0.4.1+2 #

  • Fix DrawingController abnormal destruction

0.4.1+1 #

  • Del DrawingController.def()

0.4.1 #

  • Improved response time
  • Fix #19
  • Optimized multi-finger operation

0.4.0+1 #

  • Complete the InteractiveViewer parameters

0.4.0 #

  • Add PaintContent fromJson()
  • Add PaintContent toJson()
  • Add Paint toJson()
  • Add Tool of style serialization

0.3.1 #

  • fix SmoothLine color

0.3.0+2 #

  • fix readme

0.3.0+1 #

  • fix readme

0.3.0 #

  • Breaking change, Please read the documentation carefully

0.2.7 #

  • Pass static analysis, update colorpicker

0.2.6 #

  • Change colorpicker

0.2.5 #

  • Improve brush strokes, add brushPrecision setter

0.2.4 #

  • Add brush strokes, improve code quality

0.2.3 #

  • Improve code quality

0.2.2 #

  • Fix export and update flutter_colorpicker

0.2.1 #

  • Organize folders.

0.2.0 #

  • Format code, update flutter_colorpicker.

0.1.9 #

  • Optimize null-safety.

0.1.8 #

  • Optimize layout.

0.1.7 #

  • Update example to null-safety.

0.1.6 #

  • Perfect example and update color-picker.

0.1.5 #

  • Fix color-picker bug.

0.1.4 #

  • Migrate to null-safety.

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verified publisherfluttercandies.com

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Metadata

A Flutter package of drawing board, provides basic drawing tools, canvas operations, and image data acquisition.

Repository (GitHub)
View/report issues

Documentation

API reference

License

MIT (license)

Dependencies

flutter

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