我组装了一个自定义的 QGraphicsView，可以在 Python 的主窗口中显示它，但我正在努力将其集成到我用 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 mousepress 事件。如何使用 Qt Designer 制作的表单将其集成到应用程序中？我已经使用 Qt Designer 构建了整个应用程序，其他一切都可以工作，我只需要能够将这一部分与其余部分添加到一起。
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_())
最佳答案
我认为你的意思是你成功地将这段代码添加到主窗口中，但你希望能够将其添加到你在设计器中制作的小部件中，而不是严格的主窗口中。
如果是这种情况，您需要做的就是在 Qt Designer 中按照您想要的方式格式化您的小部件，添加一个占位符，例如框架、布局，也许是一个组等，您想要在其中插入 Display_Pixels QGraphicsView 对象。
之后不会直接将其添加到框架中，而是框架正在使用的任何布局。所以如果你的框架中有一个网格布局，它会是这样的:
self.Disp_pixel = Display_Pixels()
widget_name.gridlayout.addWidget(self.Disp_pixel)
很难告诉您此代码将在您的代码中的何处实现，但假设您运行了 pyuic5 并获得了 python 输出。您可以将其添加到输出 python 文件中。我建议使用类似于查看器类的东西，它继承生成的输出类并在其中添加小部件。另外，frame 是您为图形 View 创建的框架的名称，而不是字面上的框架。
另外，我不确定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。也就是说，小部件可以放置在其他小部件中。
这是我为您提供的一个示例，它有点粗糙，但我认为它会有所帮助:
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_())
关于python - 获取自定义 Qt QGraphicsView 以显示在使用 Qt Designer 制作的表单中，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/54708398/