我正在使用Python 3.6.3（GUI框架）和PyQt5 5.9.1（国际象棋库）python-chess 0.21.1在Windows 10开发国际象棋GUI。我想得到一个被点击在SVG棋盘上的棋子的价值（由python-chess提供），这样我就可以将那个棋子移到另一个方格。
在第一次鼠标左键单击并获得该片段后，我想从用户处获得第二个鼠标左键并获得用户单击的方块。然后我的国际象棋GUI必须将棋子从原始方块移动到目标方块。
所以，到目前为止，这是我完整的工作代码。任何提示或实际代码添加都是非常受欢迎的。
#! /usr/bin/env python3
import chess
import chess.svg
from PyQt5.QtCore import pyqtSlot, Qt
from PyQt5.QtSvg import QSvgWidget
from PyQt5.QtWidgets import QApplication, QWidget
class MainWindow(QWidget):
def __init__(self):
super().__init__()
self.setWindowTitle("Chess Titan")
self.setGeometry(300, 300, 800, 800)
self.widgetSvg = QSvgWidget(parent=self)
self.widgetSvg.setGeometry(10, 10, 600, 600)
self.chessboard = chess.Board()
@pyqtSlot(QWidget)
def mousePressEvent(self, event):
if event.buttons() == Qt.LeftButton:
## How to get the clicked SVG chess piece?
# Envoke the paint event.
self.update()
@pyqtSlot(QWidget)
def paintEvent(self, event):
self.chessboardSvg = chess.svg.board(self.chessboard).encode("UTF-8")
self.widgetSvg.load(self.chessboardSvg)
if __name__ == "__main__":
chessTitan = QApplication([])
window = MainWindow()
window.show()
chessTitan.exec()
答案 0 :(得分：1)
如果已知棋盘大小，您可以从event.pos（）resp.event.x（），event.y（）中找到鼠标点击的坐标，具体取决于marginwidth和squaresize，请参阅chess.svg.py行129 ff。
编辑11月25日： event.pos()在此示例中是MainWindow坐标，要查找棋盘上的坐标，必须从self.svgX和self.svgY所代表的左上角计算{1}}：
import chess
import chess.svg
from PyQt5.QtCore import pyqtSlot, Qt
from PyQt5.QtSvg import QSvgWidget
from PyQt5.QtWidgets import QApplication, QWidget
class MainWindow(QWidget):
def __init__(self):
super().__init__()
self.setWindowTitle("Chess Titan")
self.setGeometry(300, 300, 800, 800)
self.widgetSvg = QSvgWidget(parent=self)
self.svgX = 50 # top left x-pos of chessboard
self.svgY = 50 # top left y-pos of chessboard
self.cbSize = 600 # size of chessboard
self.widgetSvg.setGeometry(self.svgX,self.svgY, self.cbSize, self.cbSize)
self.coordinates = True
# see chess.svg.py line 129
self.margin = 0.05*self.cbSize if self.coordinates == True else 0
self.squareSize = (self.cbSize - 2 * self.margin) / 8.0
self.chessboard = chess.Board()
self.pieceToMove = [None, None]
@pyqtSlot(QWidget)
def mousePressEvent(self, event):
if self.svgX < event.x() <= self.svgX + self.cbSize and self.svgY < event.y() <= self.svgY + self.cbSize: # mouse on chessboard
if event.buttons() == Qt.LeftButton:
# if the click is on chessBoard only
if self.svgX + self.margin < event.x() < self.svgX + self.cbSize - self.margin and self.svgY + self.margin < event.y() < self.svgY + self.cbSize - self.margin:
file = int((event.x() - (self.svgX + self.margin))/self.squareSize)
rank = 7 - int((event.y() - (self.svgY + self.margin))/self.squareSize)
square = chess.square(file, rank) # chess.sqare.mirror() if white is on top
piece = self.chessboard.piece_at(square)
coordinates = '{}{}'.format(chr(file + 97), str(rank +1))
if self.pieceToMove[0] is not None:
move = chess.Move.from_uci('{}{}'.format(self.pieceToMove[1], coordinates))
self.chessboard.push(move)
print(self.chessboard.fen())
piece = None
coordinates= None
self.pieceToMove = [piece, coordinates]
else:
print('coordinates clicked')
# Envoke the paint event.
self.update()
else:
QWidget.mousePressEvent(self, event)
@pyqtSlot(QWidget)
def paintEvent(self, event):
self.chessboardSvg = chess.svg.board(self.chessboard, size = self.cbSize, coordinates = self.coordinates).encode("UTF-8")
self.widgetSvg.load(self.chessboardSvg)
if __name__ == "__main__":
chessTitan = QApplication([])
window = MainWindow()
window.show()
chessTitan.exec()
交替移动白色和黑色碎片，如果相同的颜色移动两次，它们会改变颜色。
答案 1 :(得分：1)
以下是内置合法移动检测功能的全功能国际象棋GUI的Python，PyQt5和python-chess代码，因此棋子移动符合国际象棋的规则。
#! /usr/bin/env python
"""
This module is the execution point of the chess GUI application.
"""
import sys
import chess
from PyQt5.QtCore import pyqtSlot, Qt
from PyQt5.QtSvg import QSvgWidget
from PyQt5.QtWidgets import QApplication, QWidget
class MainWindow(QWidget):
"""
Create a surface for the chessboard.
"""
def __init__(self):
"""
Initialize the chessboard.
"""
super().__init__()
self.setWindowTitle("Chess GUI")
self.setGeometry(300, 300, 800, 800)
self.widgetSvg = QSvgWidget(parent=self)
self.widgetSvg.setGeometry(10, 10, 600, 600)
self.boardSize = min(self.widgetSvg.width(),
self.widgetSvg.height())
self.coordinates = True
self.margin = 0.05 * self.boardSize if self.coordinates else 0
self.squareSize = (self.boardSize - 2 * self.margin) / 8.0
self.pieceToMove = [None, None]
self.board = chess.Board()
self.drawBoard()
@pyqtSlot(QWidget)
def mousePressEvent(self, event):
"""
Handle left mouse clicks and enable moving chess pieces by
clicking on a chess piece and then the target square.
Moves must be made according to the rules of chess because
illegal moves are suppressed.
"""
if event.x() <= self.boardSize and event.y() <= self.boardSize:
if event.buttons() == Qt.LeftButton:
if self.margin < event.x() < self.boardSize - self.margin and self.margin < event.y() < self.boardSize - self.margin:
file = int((event.x() - self.margin) / self.squareSize)
rank = 7 - int((event.y() - self.margin) / self.squareSize)
square = chess.square(file, rank)
piece = self.board.piece_at(square)
coordinates = "{}{}".format(chr(file + 97), str(rank + 1))
if self.pieceToMove[0] is not None:
move = chess.Move.from_uci("{}{}".format(self.pieceToMove[1], coordinates))
if move in self.board.legal_moves:
self.board.push(move)
piece = None
coordinates = None
self.pieceToMove = [piece, coordinates]
self.drawBoard()
def drawBoard(self):
"""
Draw a chessboard with the starting position and then redraw
it for every new move.
"""
self.boardSvg = self.board._repr_svg_().encode("UTF-8")
self.drawBoardSvg = self.widgetSvg.load(self.boardSvg)
return self.drawBoardSvg
if __name__ == "__main__":
chessGui = QApplication(sys.argv)
window = MainWindow()
window.show()
sys.exit(chessGui.exec_())
答案 2 :(得分：0)
a_manthey_67和BoštjanMejak，我结合了两种解决方案的功能： https://github.com/vtad4f/chess-ui/blob/master/board.py
完整版将AI播放器与您的木板UI集成在一起：