def __init__(self):
super(Mainwindow, self).__init__()
# Initialize field lists
# field = [
# [0,0,0,0,0,0,0,0],
# [0,0,0,0,0,0,0,0],
# [0,0,0,0,0,0,0,0],
# [0,0,0,0,0,0,0,0],
# [0,0,0,0,0,0,0,0],
# [0,0,0,0,0,0,0,0],
# [0,0,0,0,0,0,0,0],
# [0,0,0,0,0,0,0,0]]
# => size of 8x8
# Background will stay the same as the field changes
self.field = [[ 0 for i in range(8) ] for j in range(8) ]
self.background = [ [ 0 for i in range(8) ] for j in range(8) ]
# Create/reset log file on startup
open('log.txt', 'w').close()
# Run backtracking in another thread to prevent GUI from freezing
self.thread = Thread()
self.thread.signal.coordinates.connect(self.thread_run)
self.thread.signal.end.connect(self.thread_finished)
self.thread.signal.log.connect(self.thread_log)
self.build_ui()
self.show()
class Mainwindow(QtGui.QWidget):
def __init__(self):
super(Mainwindow, self).__init__()
# Initialize field lists
# field = [
# [0,0,0,0,0,0,0,0],
# [0,0,0,0,0,0,0,0],
# [0,0,0,0,0,0,0,0],
# [0,0,0,0,0,0,0,0],
# [0,0,0,0,0,0,0,0],
# [0,0,0,0,0,0,0,0],
# [0,0,0,0,0,0,0,0],
# [0,0,0,0,0,0,0,0]]
# => size of 8x8
# Background will stay the same as the field changes
self.field = [[ 0 for i in range(8) ] for j in range(8) ]
self.background = [ [ 0 for i in range(8) ] for j in range(8) ]
# Create/reset log file on startup
open('log.txt', 'w').close()
# Run backtracking in another thread to prevent GUI from freezing
self.thread = Thread()
self.thread.signal.coordinates.connect(self.thread_run)
self.thread.signal.end.connect(self.thread_finished)
self.thread.signal.log.connect(self.thread_log)
self.build_ui()
self.show()
def build_ui(self):
self.magic_button = QtGui.QPushButton("Run")
self.magic_button.clicked.connect(self.backtrack_start)
self.solution_button = QtGui.QPushButton("Solutions")
self.solution_button.setEnabled(False)
self.solution_button.clicked.connect(self.open_solutions)
# Console box
layout_console = QtGui.QFormLayout()
self.console_box = QtGui.QGroupBox("Console")
self.console_output = QtGui.QTextEdit()
self.console_output.insertPlainText("log.txt loaded...\n")
self.console_output.setReadOnly(True)
# Auto scroll to bottom
self.console_output.moveCursor(QtGui.QTextCursor.End)
layout_console.addRow(self.console_output)
self.console_box.setLayout(layout_console)
# Main layout
main_layout = QtGui.QVBoxLayout()
main_layout.addWidget(self.gui_settings())
main_layout.addWidget(self.gui_chessboard())
main_layout.addWidget(self.console_box)
self.setLayout(main_layout)
# Center window
resolution = QtGui.QDesktopWidget().screenGeometry()
screenX = (resolution.width()/2) - 200
screenY = (resolution.height()/2) - 320
self.move(screenX,screenY)
self.setFixedSize(400, 600)
self.setWindowTitle("Eight Queens Puzzle")
def gui_settings(self):
"""Settings box initialization."""
box = QtGui.QGroupBox("Settings")
layout = QtGui.QHBoxLayout()
delay_input = QtGui.QLineEdit("0.2")
delay_input.setFixedWidth(40)
delay_label = QtGui.QLabel("Seconds per Solution")
delay_input.textChanged.connect(self.thread_delay)
layout.addWidget(delay_input)
layout.addWidget(delay_label)
layout.addWidget(self.magic_button)
layout.addWidget(self.solution_button)
box.setLayout(layout)
return box
def gui_chessboard(self):
"""Chessboard box initialization."""
box = QtGui.QGroupBox("Checkboard")
layout = QtGui.QGridLayout()
mod = 0
y = 0
for i in range(len(self.field)):
mod += 1
y += 1
x = 0
for j in range(len(self.field[i])):
x += 1
# Initialize fields
self.background[i][j] = QtGui.QLabel('', self)
self.field[i][j] = QtGui.QLabel('', self)
layout.addWidget(self.background[i][j], x, y)
layout.addWidget(self.field[i][j], x, y)
# Chessboard pattern
if mod % 2 == 0:
self.background[i][j].setPixmap(QtGui.QPixmap("queenslib/assets/even.png"))
self.field[i][j].setPixmap(QtGui.QPixmap(""))
else:
self.background[i][j].setPixmap(QtGui.QPixmap("queenslib/assets/odd.png"))
self.field[i][j].setPixmap(QtGui.QPixmap(""))
mod += 1
box.setLayout(layout)
return box
def thread_finished(self):
"""On finished run."""
self.solution_button.setEnabled(True)
self.magic_button.setEnabled(False)
def thread_run(self, x, y, value):
"""Graphically place queen."""
self.field[x][y].setPixmap(QtGui.QPixmap(value))
def thread_log(self, text):
"""Logging in file."""
log_file = open('log.txt','a+')
log_file .write(text)
log_file .close()
# Graphical indication
self.console_output.insertPlainText(text)
# Auto scrolling
self.console_output.moveCursor(QtGui.QTextCursor.End)
def backtrack_start(self):
"""Do stuff."""
# ref: http://srinikom.github.io/pyside-docs/PySide/QtCore/QThread.html
self.thread.start()
def thread_delay(self, value):
"""Update user delay value."""
self.thread.user_delay = float(value)/10
def open_solutions(self):
"""Open the solution dialog."""
from queenslib.dialog.solution import SolutionDialog
d = SolutionDialog()
d.exec_()
