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Fix 1-pixel lines between squares

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In window widths or heigths that are not divisible by 8, the chess board
would contain lines between the squares (since the contraints of the
chess board rows would contain non-integer constraints).

With this commit, we calculate margins manually, in order to constrict
the chess board to widths and heights that are divisible by 8.
This commit is contained in:
Marco 2023-08-22 04:24:30 +02:00
parent 7c5439a635
commit b9d574f2ab
2 changed files with 46 additions and 32 deletions
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30
lib/chess/chess_board.dart
View File

@ -1,4 +1,5 @@
import 'dart:developer';
import 'dart:math' as math;
import 'package:flutter/material.dart';
import 'package:mchess/chess_bloc/chess_bloc.dart';
@ -42,11 +43,36 @@ class ChessBoard extends StatelessWidget {
Widget build(BuildContext context) {
log("ChessBoard's build()");
return LayoutBuilder(builder: (context, constraints) {
/*We calculate the margins manually, because otherwise we would have
lines that are 1 pixel wide between the squares (which is ugly)*/
int smallerSize =
math.min(constraints.maxWidth.toInt(), constraints.maxHeight.toInt());
int desiredSize = smallerSize - smallerSize % 8;
int verticalMargin = constraints.maxHeight.toInt() - desiredSize;
int verticalMarginTop = verticalMargin ~/ 2;
int verticalMarginBottom = verticalMargin - verticalMarginTop;
int horizontalMargin = constraints.maxWidth.toInt() - desiredSize;
int horizontalMarginLeft = horizontalMargin ~/ 2;
int horizontalMarginRight = horizontalMargin - horizontalMarginLeft;
return Container(
decoration: const BoxDecoration(
boxShadow: [BoxShadow(color: Colors.black, offset: Offset(10, 10))]),
margin: EdgeInsets.only(
left: horizontalMarginLeft.toDouble(),
right: horizontalMarginRight.toDouble(),
top: verticalMarginTop.toDouble(),
bottom: verticalMarginBottom.toDouble(),
),
child: FittedBox(
fit: BoxFit.contain,
child: Container(
decoration: const BoxDecoration(boxShadow: [
BoxShadow(color: Colors.black, offset: Offset(10, 10))
]),
child: _buildBoard(bState.bottomColor == ChessColor.black),
),
),
);
});
}
Row _buildChessRow(int rowNo, bool flipped) {

16
lib/pages/chess_game.dart
View File

@ -1,15 +1,12 @@
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:go_router/go_router.dart';
import 'package:mchess/chess_bloc/chess_bloc.dart';
import 'package:mchess/chess/chess_board.dart';
import 'package:mchess/chess/turn_indicator_widget.dart';
import 'package:mchess/chess_bloc/promotion_bloc.dart';
import 'package:mchess/utils/chess_utils.dart';
import 'package:mchess/utils/widgets/promotion_dialog.dart';
import 'package:mchess/utils/widgets/server_log_widget.dart';
import 'package:uuid/uuid.dart';
class ChessGame extends StatefulWidget {
@ -36,13 +33,8 @@ class _ChessGameState extends State<ChessGame> {
Widget build(BuildContext context) {
return Scaffold(
body: Center(
child: FittedBox(
fit: BoxFit.contain,
child: Column(
children: [
if (kDebugMode) const ServerLogWidget(textColor: Colors.white),
Container(
margin: const EdgeInsets.all(20),
child: Container(
margin: const EdgeInsets.all(10),
child: BlocListener<PromotionBloc, PromotionState>(
listener: (context, state) {
if (state.showPromotionDialog) {
@ -58,10 +50,6 @@ class _ChessGameState extends State<ChessGame> {
),
),
),
if (kDebugMode) const TurnIndicator(),
],
),
),
),
floatingActionButton: FloatingActionButton(
onPressed: () {