问题描述
).一种可能的解决方案是使用 QWebEngineView(python -m pip install pyqtwebengine):
导入操作系统导入系统从 PyQt5 导入 QtCore、QtGui、QtWidgets、QtSvg、QtWebEngineWidgetsCURRENT_DIR = os.path.dirname(os.path.realpath(__file__))如果 __name__ == '__main__':应用程序 = QtWidgets.QApplication(sys.argv)文件名 = os.path.join(CURRENT_DIR, "back-red.svg")场景 = QtWidgets.QGraphicsScene()渲染器 = QtSvg.QSvgRenderer(文件名)graphics_view = QtWidgets.QGraphicsView()graphics_view.setScene(场景)graphics_view.show()视图 = QtWebEngineWidgets.QWebEngineView()view.setContextMenuPolicy(QtCore.Qt.NoContextMenu)# view.page().setBackgroundColor(QtGui.QColor("透明"))view.resize(renderer.viewBox().size())view.load(QtCore.QUrl.fromLocalFile(文件名))item = scene.addWidget(view)graphics_view.resize(640, 480)sys.exit(app.exec())
This SVG image is correctly rendered in Firefox and Inkscape, but for some reason, when using QGraphicsSVGItem without anything fancy, it renders this way:
For reference, this is what it looks like on firefox:
As you can see, the back of the card is not supposed to go beyond the white border.
Am I doing something wrong? Is there a (preferably easy) fix?
MWE:
import sys from PyQt5 import QtWidgets, QtCore, Qt, QtGui app = QtWidgets.QApplication(sys.argv) scene = QtWidgets.QGraphicsScene() scene.addItem(Qt.QGraphicsSvgItem("back-red.svg")) graphics_view = QtWidgets.QGraphicsView() graphics_view.setScene(scene) graphics_view.show() sys.exit(app.exec())
解决方案
Probably your svg does not meet the characteristics that Qt uses (for more information read here). One possible solution is to use QWebEngineView(python -m pip install pyqtwebengine):
import os import sys from PyQt5 import QtCore, QtGui, QtWidgets, QtSvg, QtWebEngineWidgets CURRENT_DIR = os.path.dirname(os.path.realpath(__file__)) if __name__ == '__main__': app = QtWidgets.QApplication(sys.argv) filename = os.path.join(CURRENT_DIR, "back-red.svg") scene = QtWidgets.QGraphicsScene() renderer = QtSvg.QSvgRenderer(filename) graphics_view = QtWidgets.QGraphicsView() graphics_view.setScene(scene) graphics_view.show() view = QtWebEngineWidgets.QWebEngineView() view.setContextMenuPolicy(QtCore.Qt.NoContextMenu) # view.page().setBackgroundColor(QtGui.QColor("transparent")) view.resize(renderer.viewBox().size()) view.load(QtCore.QUrl.fromLocalFile(filename)) item = scene.addWidget(view) graphics_view.resize(640, 480) sys.exit(app.exec())