chessground 6.0.0

Chess board UI developed for lichess.org. It has no chess logic inside so it can be used for chess variants.

6.0.0

Breaking changes:

• Removed ChessboardEditorSettings. The ChessboardEditor widget now takes a ChessboardSettings object as a parameter.

New features:

• Add a new border settings to show a border around the board.

Bug fixes:

• Fixed a timer not properly canceled when the board is disposed.

5.3.0

• Added a new StaticChessboard widget that is optimized for scrollable contexts.
• SolidColorChessboardBackground is now implemented with CustomPaint to improve performance when building a lot of boards.
• Added a new board colorscheme: ic.

5.2.0

• Introduced a ChessgroundImages singleton to precache piece images. This is useful when using the same piece set in multiple places, and to avoid using the global flutter image cache, which can be unpredictable. It should prevent any "blinking" effect that could happen with the Image widget when the image is reloaded from the cache.

5.1.1

• Reset animation state when the board is updated. This fixes potential issues where the board would display ghost pieces on some conditions.

5.1.0

• Dragging a piece to the same square will now keep the piece selected.

5.0.0

• Added another Chessboard.fixed constructor that allows to set the board to a fixed position.
• Premove state is now lifted up to the parent widget, in order to allow instant play of premoves.
• Promotion state is now lifted up to the parent widget, in order to allow more control over the promotion dialog.
• Add symmetric piece set (PieceAssets.symmetric).
• ChessboardEditor now supports highlighting squares.
• Flip BoardSettings.dragFeedbackOffset.dy for flipped pieces. Support displaying all pieces upside down based on side to move.
• Fix: ensure the board background does not overflow the board.

Breaking changes:

• Chessboard now require a game parameter of type GameData instead of BoardData.
• Added required parameters piece and pieceAssets to PieceShape, removed role. Added optional opacity parameter.
• Remove 'ChessboardState.opponentsPiecesUpsideDown' in favor of ChessboardSettings.pieceOrientationBehavior.

4.0.0

New features:

• Add a ChessboardEditor widget, intended to be used as the basis for a board editor like lichess.org/editor.
• Add the writeFen helper function.

Breaking changes:

• Requires an SDK version of at least 3.3.0.
• Chessground is now dependant on dartchess. It is only used for the models, and not for the game logic, so Chessground can still be used with any chess library.
• Board has been renamed to Chessboard, along with other classes.

Bug fixes:

• Fix arrow bad shape when new destination is the same as the origin: it now returns a circle.
• Fix unsetting premoves:
  • When a premove is set, tapping on the same origin square will now unset it.
  • dragging a piece to an invalid square will now unset the premove.
  • dragging a piece off the board will now unset the premove.

3.2.0

• Add pieceShiftMethod to BoardSetttings, with possible values: either (default), drag, or tapTwoSquares.

3.1.2

• Any simultaneous touch on the board will now cancel the current piece selection or drag.

3.1.1

• Allow shapes to be drawn on a non-interactable board.
• Fix a bug where the board would be stuck after transitioning from a non-interactable board to an interactable one.
• Selecting a piece will now clear all shapes on the board.
• Add the scale property to all Shape classes. Use a 0.8 scale for the shapes being drawn on the board to distinguish them from the already drawn ones.

3.1.0

• Add an optional scale parameter to arrows (default is scale: 1.0, matching the previous behavior).
• Implement BoardData.copyWith method to allow updating the board data
• Implement BoardData equality and hashcode operators
• Implement BoardSettings equality and hashcode operators

3.0.0

Improve board interaction and add support for drawing shapes while playing.

Playing:

• pieces are now moved with pointer down events, instead of a tap events (pointer down followed by a pointer up event): this allows to move a piece faster
• premoves are not anymore cleared when selecting another piece: this matches lichess website behaviour and allow to prepare another move along with the premove that is currently set

Drawing shapes (experimental)

• drawing shapes is now possible while keeping the normal board play interaction (before it was either one or another mode)
• one can draw a shape by holding a finger to an empty square while using a second finger to draw a shape anywhere in the board
• a double tap on an empty square will clear all shapes at once
• to clear a single shape is still supported: draw the same shape again

2.6.4

• Fix coordinates and board display on devices with RightToLeft Directionality.

2.6.3

• Improve coordinates display on the board.

2.6.2

• Fix borderRadius settings not being applied to the board highlights.

2.6.1

• Fix BoardSettings copyWith method.

2.6.0

• Add 2 new settings: borderRadius and boxShadow.

2.5.0

• Add a new shape type: piece (useful to show promotion hints).

2.4.1

• Don't clip board: fix annotations display on edge.

2.4.0

• Deprecate BoardTheme and export Background.

2.3.0

• Remove handling of android gestures exclusion.

2.2.1

• Upgrade fast_immutable_collections to version 10.0.0.

2.2.0

• Improve quality of PNG files, fix wrong rendering of some piece set like "Cardinal". More info: https://github.com/lichess-org/flutter-chessground/pull/28.
• Piece cache size is now rounded to the nearest integer above the actual value.

2.1.0

• BoardData.sideToMove is now optional with no default value, as well as BoardData.isCheck and constructor assertion will guarantee they are set when needed.

2.0.0

• BoardData.sideToMove is now a required parameter.

1.6.1

• Fix missing blindfoldMode to BoardSettings.copyWith

1.6.0

• Add blindfold mode

1.5.3

• Don't run premove timer if premove is not set

1.5.2

• Don't try to execute a premove if it is not allowed.

1.5.1

• Use an immediate timer to execute premove, instead of a post frame callback.

1.5.0

• premove is not anymore a local state, so it can be controlled by the parent

1.4.1

• Change the autoQueenPromotionOnPremove default setting to true

1.4.0

• Add a drawing shapes option
• Add the autoQueenPromotionOnPremove setting

1.3.1

• Improve check highlight appearance and fix rendering with Impeller.

1.3.0

• Remove opacity on origin piece when dragging because of performance issue with impeller engine.

1.2.0

• Add isDrop meta info to onMove callback.

1.1.0

• Add Caliente, Kiwen-Suwi and MPChess piece sets
• Fix promotion menu still showing when going back in moves history

1.0.4

• tapping one's piece now cancels premove.

1.0.3

• showValidMoves board setting now applies to premoves.

1.0.2

• When premoving, tapping same piece will now deselect it (to be consistent with normal moves).

1.0.1

• Ensure premove square highlight takes precedence over last move.

1.0.0

Initial release.