我已经实现了一个在单元格之间拖放的表格。这是该应用程序的简化版本。我想在一些单元格中使用圆角矩形和其他绘图功能。可以看出（运行时），形状仅显示在主窗口左上角的小窗口中。
#! /usr/bin/env python3.6
# -*- coding: utf-8 -*-
import sys
from PyQt5 import QtCore, QtGui, QtWidgets #Just tested it for PyQt4 since I don't have PySide installed...
#
class PaintTable(QtWidgets.QTableWidget):
def __init__(self, parent):
QtWidgets.QTableWidget.__init__(self, parent)
self.center = QtCore.QPoint(-10,-10)
#self.setAcceptDrops(True) ## do not pickup drag/drop if assoc with tableWidget
#self.table.setDragEnabled(True) ## needs to refer to tablewWidget
def paintEvent(self, event):
painter = QtGui.QPainter(self.viewport())
##painter.resize(100,200)
sizex = self.viewport().width()
sizey = self.viewport().height()
#See: http://stackoverflow.com/questions/12226930/overriding-qpaintevents-in-pyqt
print("Viewport %s # %s # %i / %i"% (self, self.center, sizex, sizey))
h = int(self.center.y()/50)*50+40
w = int(self.center.x()/50)*50+25
a = w-25
b = h-25
c = 50
d = 20
painter.setPen(QtGui.QPen(QtCore.Qt.green, 5))
painter.drawRoundedRect((a),(b),(c),(d),10,10)
line = QtCore.QLineF(w+10.0, h+80.0, w+90.0, h+20.0)
painter.drawLine(line)
QtWidgets.QTableWidget.paintEvent(self,event)
def mousePressEvent(self, event):
if event.buttons() == QtCore.Qt.RightButton:
self.center = QtCore.QPoint(event.pos().x(), event.pos().y())
print ("at repaint %s" % self.center)
self.viewport().repaint()
elif event.buttons() == QtCore.Qt.LeftButton:
print("In left")
QtWidgets.QTableWidget.mousePressEvent(self,event)
def dragMoveEvent(self, e): # do I need this?
e.accept(QtCore.QRect(0,0,3000,1800)) ##QRect for moves
# do not print("in move") from here; will get many
## locations appear to be related to the upper left corner of the Main Window, not the table
def dragEnterEvent(self, e): ## redefined event
##
self.DISPLAY_LOCK = 1
##
was = e.pos()
print("At top enter %s" % self)
if (was.x() > 0 and was.x() < self.Wtable) :
e.accept()
wxy = QtCore.QPoint()
wxy.setX(was.x())
wxy.setY(was.y()-self.TabYoff)
print ("newYpos -> %s" % wxy)
##
def dropEvent(self, e): ## redefined event
print ('drop %s' % self.itemt[0])
#####
class MainWindow(QtWidgets.QMainWindow, QtWidgets.QTableWidget): #, PaintTable ):
def __init__(self, parent = None):
super(MainWindow, self).__init__(parent)
# General grid
self.resize(2400, 1400)
### underlying structure to allow drag and drag to function on the table
self.cent = QtWidgets.QWidget(PaintTable(self)) ## self
self.table = QtWidgets.QTableWidget(self.cent)
self.setCentralWidget(self.cent)
self.table.setGeometry(QtCore.QRect(0, 500, 2400, 1400))
self.setAcceptDrops(True) ## do not pickup drag/drop if assoc with tableWidget
self.table.setDragEnabled(True) ## needs to refer to table
print("self: %s " % self)
self.nbrow, self.nbcol = 9, 9
self.table.setRowCount(self.nbrow)
self.table.setColumnCount(self.nbcol)
for row in range(0, self.nbrow):
self.table.setRowHeight(row, 50)
for col in range(0, self.nbcol):
self.table.setColumnWidth(col, 50)
# Each cell contains one single QTableWidgetItem
for row in range(0, self.nbrow):
for col in range(0, self.nbcol):
item = QtWidgets.QTableWidgetItem("#")
item.setTextAlignment(
QtCore.Qt.AlignHCenter | QtCore.Qt.AlignVCenter
)
self.table.setItem(row, col, item)
# Header formatting
font = QtGui.QFont()
font.setFamily(u"DejaVu Sans")
font.setPointSize(12)
self.table.horizontalHeader().setFont(font)
self.table.verticalHeader().setFont(font)
# Font used
font = QtGui.QFont()
font.setFamily(u"DejaVu Sans")
font.setPointSize(10)
self.table.setFont(font)
# Global Size (can change size here)
#self.resize(60*9, 60*9 + 20)
# Layout of the underlying palette
layout = QtWidgets.QGridLayout()
layout.addWidget(self.table, 0, 0)
self.setLayout(layout)
# Set the focus in the first cell
self.table.setFocus()
self.table.setCurrentCell(0, 0)
def dragMoveEvent(self, e): # do I need this?
e.accept(QtCore.QRect(0,0,2400,1400)) ##QRect for moves
# do not print("in move") from here; will get many
## locations appear to be related to the upper left corner of the Main Window, not the table
def dragEnterEvent(self, e): ## redefined event
##
self.DISPLAY_LOCK = 1
##
was = e.pos()
print("At top enter %s" % self)
##if (was.x() > 0 and was.x() < self.Wtable) :
e.accept()
## wxy = QtCore.QPoint()
## wxy.setX(was.x())
## wxy.setY(was.y()-self.TabYoff)
print ("newXYpos -> %s %s" % (was.x(),was.y()))
##
def dropEvent(self, e): ## redefined event
x="go"
self.table.setItem(3, 3, QtWidgets.QTableWidgetItem("K"))
print ('drop %s' % x)
if __name__ == "__main__":
app = QtWidgets.QApplication(sys.argv)
fen = MainWindow()
fen.show()
sys.exit(app.exec_())
我有第二个例子，我有所需的形状，但这个版本不支持拖放。
#! /usr/bin/env python3.6
# -*- coding: utf-8 -*-
import sys
from PyQt5 import QtCore, QtGui, QtWidgets #Just tested it for PyQt4 since I don't have PySide installed...
import sys
#
#x#class PaintTable(object):
class PaintTable(QtWidgets.QTableWidget):
def __init__(self, parent):
QtWidgets.QTableWidget.__init__(self, parent)
#x#self.table=QtWidgets.QTableWidget()
print("Create table")
self.center = QtCore.QPoint(-10,-10)
##self.setAcceptDrops(True) ## does not pickup drag/drop
##self.table.setDragEnabled(True)
def paintEvent(self, event):
painter = QtGui.QPainter(self.viewport()) #See: http://stackoverflow.com/questions/12226930/overriding-qpainztevents-in-pyqt
print("Viewport %s"% self)
h = int(self.center.y()/50)*50+40
w = int(self.center.x()/50)*50+25
a = w-25
b = h-25
c = 50
d = 20
painter.setPen(QtGui.QPen(QtCore.Qt.green, 5))
painter.drawRoundedRect((a),(b),(c),(d),10,10)
line = QtCore.QLineF(w+10.0, h+80.0, w+90.0, h+20.0)
painter.drawLine(line)
QtWidgets.QTableWidget.paintEvent(self,event)
def mousePressEvent(self, event):
if event.buttons() == QtCore.Qt.RightButton:
self.center = QtCore.QPoint(event.pos().x(), event.pos().y())
print ("at repaint %s" % self.center)
self.viewport().repaint()
elif event.buttons() == QtCore.Qt.LeftButton:
print("In left")
QtWidgets.QTableWidget.mousePressEvent(self,event)
def dragMoveEvent(self, e): # do I need this?
e.accept(QtCore.QRect(0,0,3000,1800)) ##QRect for moves
# do not print("in move") from here; will get many
## locations appear to be related to the upper left corner of the Main Window, not the table
def dragEnterEvent(self, e): ## redefined event
##
self.DISPLAY_LOCK = 1
##
was = e.pos()
print("At top enter %s" % self)
if (was.x() > 0 and was.x() < self.Wtable) :
e.accept()
wxy = QtCore.QPoint()
wxy.setX(was.x())
wxy.setY(was.y()-self.TabYoff)
print ("newYpos -> %s" % wxy)
##
def dropEvent(self, e): ## redefined event
print ('drop %s' % self.itemt[0])
#####
#x#class MainWindow(QtWidgets.QTableWidget):
class MainWindow(PaintTable): ## get graphics on MainWindow, also
def __init__(self, parent = None):
super(MainWindow, self).__init__(parent)
# General grid
#x#self.xxx = PaintTable(self)
#x#self.table = self.xxx.table
self.table = PaintTable(self)
self.setAcceptDrops(True) ## do not pickup drag/drop if assoc with tableWidget
self.table.setDragEnabled(True) ## needs to refer to table
print("self: %s " % self)
self.nbrow, self.nbcol = 9, 9
self.table.setRowCount(self.nbrow)
self.table.setColumnCount(self.nbcol)
for row in range(0, self.nbrow):
self.table.setRowHeight(row, 50)
for col in range(0, self.nbcol):
self.table.setColumnWidth(col, 50)
# Each cell contains one single QTableWidgetItem
for row in range(0, self.nbrow):
for col in range(0, self.nbcol):
item = QtWidgets.QTableWidgetItem()
item.setTextAlignment(
QtCore.Qt.AlignHCenter | QtCore.Qt.AlignVCenter
)
self.table.setItem(row, col, item)
# Header formatting
font = QtGui.QFont()
font.setFamily(u"DejaVu Sans")
font.setPointSize(12)
self.table.horizontalHeader().setFont(font)
self.table.verticalHeader().setFont(font)
# Font used
font = QtGui.QFont()
font.setFamily(u"DejaVu Sans")
font.setPointSize(20)
self.table.setFont(font)
# Global Size
self.resize(60*9, 60*9 + 20)
# Layout of the table
layout = QtWidgets.QGridLayout()
layout.addWidget(self.table, 0, 0)
self.setLayout(layout)
# Set the focus in the first cell
self.table.setFocus()
self.table.setCurrentCell(0, 0)
##### drag routines
def dragMoveEvent(self, e): # do I need this?
e.accept(QtCore.QRect(0,0,3000,1800)) ##QRect for moves
# do not print("in move") from here; will get many
## locations appear to be related to the upper left corner of the Main Window, not the table
def dragEnterEvent(self, e): ## redefined event
##
self.DISPLAY_LOCK = 1
##
was = e.pos()
print("At top enter %s" % self)
if (was.x() > 0 and was.x() < self.Wtable) :
e.accept()
wxy = QtCore.QPoint()
wxy.setX(was.x())
wxy.setY(was.y()-self.TabYoff)
print ("newYpos -> %s" % wxy)
##
def dropEvent(self, e): ## redefined event
print ('drop %s' % self.itemt[0])
if __name__ == "__main__":
app = QtWidgets.QApplication(sys.argv)
fen = MainWindow()
fen.show()
sys.exit(app.exec_())
需要什么结构才能同时覆盖形状和拖放功能？