问题描述
我在表单上有 2 个 QWebEngineView 和一个 QWebEngineView 小部件，我需要 *（单击按钮 1）* 制作此 QWebEngineView 中内容的屏幕截图原始 QGraphicsView 边界的一些定义的挫折并将该屏幕截图保存为图像，同时将其保留为对象并将此对象粘贴到第一个 QGraphicsView 和 *（单击 button2 )* 将保存的图像插入第二个 import sys,os
from PyQt5.QtCore import Qt
from PyQt5.QtGui import QBrush,QPen,QScreen,Qpixmap
from PyQt5.QtWidgets import QApplication,qstyleFactory,QMainWindow,QWidget,QVBoxLayout,QLabel
from PyQt5.QtWidgets import QGraphicsScene,QGraphicsView,QGraphicsItem,QPushButton
from pyqtgraph.Qt import QtCore,QtGui
from PyQt5.QtWebEngineWidgets import QWebEngineView
from PyQt5.QtWidgets import QApplication,QDialog
class Geometry(QGraphicsView):
def __init__(self):
QGraphicsView.__init__(self)
class CentralPanel(QWidget):
def __init__(self):
QWidget.__init__(self)
self.lblCoords = QLabel('MAP SELECTOR (object image): ')
self.lblCoords2 = QLabel('MAP SELECTOR (loaded from file image): ')
self.gvwShapes = Geometry()
self.gvwShapes2 = Geometry()
vbxDsply = QVBoxLayout()
vbxDsply.addWidget(self.lblCoords) # Capture coordinates of drawn line at window 1
vbxDsply.addWidget(self.gvwShapes) # add QGraphicsView #1
vbxDsply.addWidget(self.lblCoords2) # Capture coordinates of drawn line at window 2
vbxDsply.addWidget(self.gvwShapes2) # add QGraphicsView #2
self.webEngineView = QWebEngineView() # Add Google maps web window
self.webEngineView.load(QtCore.QUrl("https://www.google.com/maps/@36.797966,-97.1413048,3464a,35y,0.92h/data=!3m1!1e3"))
vbxDsply.addWidget(self.webEngineView)
self.Button1 = QPushButton('Do screenshot of webEngineView save it and paste it into QGraphicsView2',self) # Button to load image to graphics view
vbxDsply.addWidget(self.Button1)
self.Button1.clicked.connect(self.button_screenshot)
self.Button2 = QPushButton('Do screenshot of webEngineView and paste it into QGraphicsView1 ',self)
vbxDsply.addWidget(self.Button2)
self.Button2.clicked.connect(self.button_load_image)
self.setLayout(vbxDsply)
self.filename = "image.jpg"
def button_screenshot(self):
print('Screenshot is taken and saved as an image,Image loaded and inserted into the gvwShapes QGraphicsView1 ')
app = QApplication(sys.argv)
QScreen.grabWindow(app.primaryScreen(),QApplication.desktop().winId()).save(self.filename,'png')
def button_load_image(self):
print('Screenshot is taken and inserted into the gvwShapes2 QGraphicsView2')
# pix = Qpixmap()
# pix.load(self.filename)
# pix = Qpixmap(self.filename)
# item = QGraphicspixmapItem(pix)
# scene = QGraphicsScence(self)
# scene.addItem(item)
# self.graphicsView.setScene(scene)
scene = QtWidgets.QGraphicsScene(self)
pixmap = Qpixmap(self.filename)
item = QtWidgets.QGraphicspixmapItem(pixmap)
scene.addItem(item)
self.gvwShapes.setScene(scene)
# scene = self.gvwShapes
# self.image = QtGui.Qpixmap(self.filename)
# self.gvwShapes.add
# scene.addItem(QtGui.QGraphicspixmapItem(self.image))
# self.view = self.QGraphicsView
# self.view.setScene(self.image)
# self.view.show()
class MainWindow(QMainWindow):
def __init__(self):
QMainWindow.__init__(self)
self.setGeometry(200,50,700,900)
self.setwindowTitle('MAP Selector REV01')
self.setStyle(qstyleFactory.create('Cleanlooks'))
self.CenterPane = CentralPanel()
self.setCentralWidget(self.CenterPane)
# Catching exceptions and running a main loop
#
import traceback
def except_hook(exc_type,exc_value,exc_tb):
tb = "".join(traceback.format_exception(exc_type,exc_tb))
print("error cached")
print("error message:\n",tb)
if __name__ == "__main__":
MainEventThred = QApplication([])
os.environ["QTWEBENGINE_CHROMIUM_FLAGS"] = "--enable-logging --log-level=3"
sys.excepthook = except_hook
MainApp = MainWindow()
MainApp.show()
MainEventThred.exec()
。
编辑： （我想对 QtWebEngineWidgets 内的区域进行屏幕截图并将该区域作为对象保留。第二个问题我需要知道如何以两种不同的方式将此区域粘贴到 QGraphicsView 中：（来自文件）并在不保存的情况下将其显示为对象。2 QGraphicsView 仅用于学习目的，它可能只是一个 QGraphicsView 并且通过点击 button1 屏幕截图正在制作并粘贴为 QGraphicsView 的对象，并通过点击 button2 -screenshot 正在制作（保存作为 png 并加载到 QGraphicsView))
这是我的代码：
<Item Key="ValidTokenIssuerPrefixes">https://login.microsoftonline.com/00000000-0000-0000-0000-000000000000,https://login.microsoftonline.com/11111111-1111-1111-1111-111111111111</Item>解决方法
为您的 QGraphicsViews 设置场景。
self.gvwShapes = Geometry()
self.gvwShapes2 = Geometry()
self.gvwShapes.setScene(QGraphicsScene())
self.gvwShapes2.setScene(QGraphicsScene())
使用 QWidget.grab() 将其渲染为 QPixmap 并使用 QGraphicsScene.addPixmap() 将其添加到场景中。您可以使用 QRect 指定区域。
def button_screenshot(self):
pixmap = self.webEngineView.grab(QRect(180,100,300,280))
pixmap.save(self.filename)
self.gvwShapes2.scene().addPixmap(pixmap)
def button_load_image(self):
self.gvwShapes.scene().addPixmap(QPixmap(self.filename))
在 QWebEngineView 中裁剪图像
如果你想实现QWebEngineView截图的裁剪，那么你必须使用QWebEngineView的focusProxy()上的一个QRubberBand（它是渲染网页的小部件，接收之后创建的鼠标事件）显示视图）
from functools import cached_property
import sys
from PyQt5.QtCore import pyqtSignal,QEvent,QObject,QPoint,QRect,QSize,QUrl
from PyQt5.QtGui import QPixmap
from PyQt5.QtWidgets import QApplication,QLabel,QRubberBand
from PyQt5.QtWebEngineWidgets import QWebEngineView
class RubberBandManager(QObject):
pixmap_changed = pyqtSignal(QPixmap,name="pixmapChanged")
def __init__(self,widget):
super().__init__(widget)
self._origin = QPoint()
self._widget = widget
self.widget.installEventFilter(self)
@property
def widget(self):
return self._widget
@cached_property
def rubberband(self):
return QRubberBand(QRubberBand.Rectangle,self.widget)
def eventFilter(self,source,event):
if self.widget is source:
if event.type() == QEvent.MouseButtonPress:
self._origin = event.pos()
self.rubberband.setGeometry(QRect(self._origin,QSize()))
self.rubberband.show()
elif event.type() == QEvent.MouseMove:
self.rubberband.setGeometry(
QRect(self._origin,event.pos()).normalized()
)
elif event.type() == QEvent.MouseButtonRelease:
rect = self.rubberband.geometry()
pixmap = self.widget.grab(rect)
self.pixmap_changed.emit(pixmap)
self.rubberband.hide()
return super().eventFilter(source,event)
if __name__ == "__main__":
app = QApplication(sys.argv)
view = QWebEngineView()
view.load(
QUrl(
"https://www.google.com/maps/@36.797966,-97.1413048,3464a,35y,0.92h/data=!3m1!1e3"
)
)
view.show()
rubberband_manager = RubberBandManager(view.focusProxy())
label = QLabel()
label.hide()
def on_pixmap_changed(pixmap):
label.setPixmap(pixmap)
label.adjustSize()
label.show()
rubberband_manager.pixmap_changed.connect(on_pixmap_changed)
ret = app.exec()
sys.exit(ret)
在 QGraphicsView 中显示图像
要显示图像，您必须使用 QGraphicsPixmapItem 加载 QPixmap。
import sys
from PyQt5.QtCore import Qt
from PyQt5.QtGui import QPixmap,QPainter,QPalette
from PyQt5.QtWidgets import (
QApplication,QGraphicsView,QGraphicsScene,QGraphicsPixmapItem,)
class ImageViewer(QGraphicsView):
def __init__(self,parent=None):
super().__init__(parent)
self.setRenderHints(QPainter.Antialiasing | QPainter.SmoothPixmapTransform)
self.setAlignment(Qt.AlignCenter)
self.setBackgroundRole(QPalette.Dark)
scene = QGraphicsScene()
self.setScene(scene)
self._pixmap_item = QGraphicsPixmapItem()
scene.addItem(self._pixmap_item)
def load_pixmap(self,pixmap):
self._pixmap_item.setPixmap(pixmap)
self.fitToWindow()
def fitToWindow(self):
self.fitInView(self.sceneRect(),Qt.KeepAspectRatio)
def resizeEvent(self,event):
super().resizeEvent(event)
self.fitToWindow()
if __name__ == "__main__":
app = QApplication(sys.argv)
view = ImageViewer()
view.resize(640,480)
view.show()
pixmap = QPixmap("image.jpg")
view.load_pixmap(pixmap)
ret = app.exec()
sys.exit(ret)
前面的小部件用于从文件加载图像：pixmap = QPixmap("/path/of/image") 或使用 RubberBandManager 的 pixmap_changed 信号提供的 QPixmap。