我整理了一个自定义的QGraphicsView，可以在Python的主窗口中显示它，但是却很难将其集成到我用Qt Designer制作的表单中。我如何将其添加到表单中？
此外，我还添加了一个mousepress事件。如何使用Qt Designer制作的表格将其集成到应用程序中？我已经使用Qt Designer构建了一个完整的应用程序，并且所有其他功能都可以正常工作，我只需要能够将其与其余部分一起添加即可。
import sys
from PySide2 import QtCore, QtGui, QtWidgets
from PyQt5.QtWidgets import QFileDialog
from PySide2.QtUiTools import QUiLoader
from PySide2.QtWidgets import QApplication, QPushButton, QLineEdit, QAction, QSlider
from PySide2.QtWidgets import QListWidget, QTabWidget, QGraphicsView, QGraphicsScene
from PySide2.QtWidgets import QSpinBox, QWidget, QDialog, QVBoxLayout
from PySide2.QtGui import QPixmap, QImage, QMatrix, QPainter, QColor, QMouseEvent, QCursor
from PySide2.QtCore import QFile, QObject, SIGNAL
import cv2
import numpy as np
import math
class Display_Pixels(QGraphicsView):
def __init__(self, parent=None):
QGraphicsView.__init__(self, parent=parent)
#super().__init__()
self.initUI()
self.img = cv2.imread('roi.jpg')
def initUI(self):
self.setGeometry(100, 100, 650, 650)
#self.setWindowTitle('By Pixel')
#self.setMouseTracking(True)
#self.show()
res = 40
self.grid = np.array([ [-1] * res for n in range(res)]) # list comprehension
#print(self.grid.shape)
def paintEvent(self, e):
qp = QPainter()
qp.begin(self.viewport())
self.drawRectangles(qp)
qp.end()
def drawRectangles(self, qp, w = 16):
print("Drawing")
mode = 0
x,y = 0,0 # starting position
lr = 20
hr = 35
col = QColor(0, 0, 0)
col.setNamedColor('#d4d4d4')
qp.setPen(col)
#print(self.img.shape)
for g_row, img_row in zip(self.grid, self.img):
#print(img_row.shape)
for g_col, img_col in zip(g_row, img_row):
r, g, b = (img_col[0], img_col[1], img_col[2])
#print(r,g,b)
if g_col == 1:
if mode == 0:
r = int(math.log(r+1)*lr)
g = int(math.log(g+1)*hr)
b = int(math.log(b+1)*lr)
elif mode == 1:
if r+50 <= 220: r = r+50
if g+80 <= 255: g = g+80
if b+50 <= 220: b = b+50
else:
if r+70 <= 220: r = r+70
if g+140 <= 255: g = g+140
if b+70 <= 220: b = b+70
qp.setBrush(QColor(r, g, b))
qp.drawRect(x, y, w, w)
else:
qp.setBrush(QColor(r, g, b))
qp.drawRect(x, y, w, w)
#qp.setBrush(QColor(200, 0, 0))
#qp.drawRect(x, y, w, w)
x = x + w # move right
y = y + w # move down
x = 0 # rest to left edge
def mousePressEvent(self, QMouseEvent):
w = 16.0
#print("MOUSE:")
#print('(', int(QMouseEvent.x()/w), ', ', int(QMouseEvent.y()/w), ')')
#print (QMouseEvent.pos())
x = float(QMouseEvent.x())
y = float(QMouseEvent.y())
self.grid[int(y/w)][int(x/w)] = -1 * self.grid[int(y/w)][int(x/w)]
#print(img[int(y/w), int(x/w), :])
self.repaint()
#self.update()
if __name__ == '__main__':
app = QApplication.instance()
if app is None:
app = QApplication(sys.argv)
px = Display_Pixels()
px.show()
sys.exit(app.exec_())
答案 0 :(得分：1)
我认为您的意思是您已成功将此代码添加到主窗口，但是您希望能够将其添加到在Designer中创建的小部件中，而不是严格地添加到主窗口中。
如果是这种情况，您将要做的就是格式化您的小部件，如何在Qt Designer中添加您要在其中插入Display_Pixels QGraphicsView对象的占位符，例如框架，布局，也许是组等。
之后，将不会直接将其添加到框架中，而是使用该框架使用的任何布局。因此，如果您的框架中有网格布局，则类似于：
self.Disp_pixel = Display_Pixels()
widget_name.gridlayout.addWidget(self.Disp_pixel)
很难告诉您该代码将在您的代码中实现的位置，但是假设您运行了pyuic5并获得了python输出。您可以将其添加到该输出python文件中。我建议您使用类似查看器类的东西，该类继承生成的输出类并在其中进行添加小部件。框架也是您为图形视图创建的框架的名称，而不是从字面上看。
我也不知道您是否可以在任何类型的小部件上进行显示，我很确定该小部件必须是可显示的，例如主窗口小部件或对话框小部件。话虽如此，小部件可以放置在其他小部件中。
以下是我为您提供的一些示例，但我认为这会有所帮助：
import sys
import cv2
import numpy as np
import math
from PyQt5.QtGui import QPainter, QColor
from PyQt5.QtWidgets import QGraphicsView, QApplication
# -*- coding: utf-8 -*-
# Form implementation generated from reading ui file '.\testUI.ui' and .\testMainWin.ui
#
# Created by: PyQt5 UI code generator 5.9.2
#
# WARNING! All changes made in this file will be lost!
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(800, 600)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.gridLayout = QtWidgets.QGridLayout(self.centralwidget)
self.gridLayout.setObjectName("gridLayout")
MainWindow.setCentralWidget(self.centralwidget)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
class Ui_Form(object):
def setupUi(self, Form):
Form.setObjectName("Form")
Form.resize(400, 300)
self.gridLayout = QtWidgets.QGridLayout(Form)
self.gridLayout.setObjectName("gridLayout")
self.frame = QtWidgets.QFrame(Form)
self.frame.setFrameShape(QtWidgets.QFrame.StyledPanel)
self.frame.setFrameShadow(QtWidgets.QFrame.Raised)
self.frame.setObjectName("frame")
self.gridLayout_2 = QtWidgets.QGridLayout(self.frame)
self.gridLayout_2.setObjectName("gridLayout_2")
self.gridLayout.addWidget(self.frame, 0, 0, 1, 1)
self.retranslateUi(Form)
QtCore.QMetaObject.connectSlotsByName(Form)
def retranslateUi(self, Form):
_translate = QtCore.QCoreApplication.translate
Form.setWindowTitle(_translate("Form", "Form"))
class FormView(QtWidgets.QWidget, Ui_Form):
def __init__(self, parent=None):
super(FormView, self).__init__(parent)
self.setupUi(self)
self.disp_pixels = Display_Pixels()
self.gridLayout_2.addWidget(self.disp_pixels)
class MainView(QtWidgets.QMainWindow, Ui_MainWindow):
def __init__(self, parent=None):
super(MainView, self).__init__(parent)
self.setupUi(self)
class Display_Pixels(QGraphicsView):
def __init__(self, parent=None):
QGraphicsView.__init__(self, parent=parent)
#super().__init__()
self.initUI()
self.img = cv2.imread('resources/images/pic3.jpg')
def initUI(self):
self.setGeometry(100, 100, 650, 650)
#self.setWindowTitle('By Pixel')
#self.setMouseTracking(True)
#self.show()
res = 40
self.grid = np.array([ [-1] * res for n in range(res)]) # list comprehension
#print(self.grid.shape)
def paintEvent(self, e):
qp = QPainter()
qp.begin(self.viewport())
self.drawRectangles(qp)
qp.end()
def drawRectangles(self, qp, w = 16):
print("Drawing")
mode = 0
x,y = 0,0 # starting position
lr = 20
hr = 35
col = QColor(0, 0, 0)
col.setNamedColor('#d4d4d4')
qp.setPen(col)
#print(self.img.shape)
for g_row, img_row in zip(self.grid, self.img):
#print(img_row.shape)
for g_col, img_col in zip(g_row, img_row):
r, g, b = (img_col[0], img_col[1], img_col[2])
#print(r,g,b)
if g_col == 1:
if mode == 0:
r = int(math.log(r+1)*lr)
g = int(math.log(g+1)*hr)
b = int(math.log(b+1)*lr)
elif mode == 1:
if r+50 <= 220: r = r+50
if g+80 <= 255: g = g+80
if b+50 <= 220: b = b+50
else:
if r+70 <= 220: r = r+70
if g+140 <= 255: g = g+140
if b+70 <= 220: b = b+70
qp.setBrush(QColor(r, g, b))
qp.drawRect(x, y, w, w)
else:
qp.setBrush(QColor(r, g, b))
qp.drawRect(x, y, w, w)
#qp.setBrush(QColor(200, 0, 0))
#qp.drawRect(x, y, w, w)
x = x + w # move right
y = y + w # move down
x = 0 # rest to left edge
def mousePressEvent(self, QMouseEvent):
w = 16.0
#print("MOUSE:")
#print('(', int(QMouseEvent.x()/w), ', ', int(QMouseEvent.y()/w), ')')
#print (QMouseEvent.pos())
x = float(QMouseEvent.x())
y = float(QMouseEvent.y())
self.grid[int(y/w)][int(x/w)] = -1 * self.grid[int(y/w)][int(x/w)]
#print(img[int(y/w), int(x/w), :])
self.repaint()
#self.update()
if __name__ == '__main__':
app = QApplication.instance()
if app is None:
app = QApplication(sys.argv)
main_window = MainView()
form = FormView()
main_window.gridLayout.addWidget(form)
main_window.show()
sys.exit(app.exec_())