Javascript QWebPage中的QImage未完全呈现
我希望在图像完全加载时将页面内容保存到图像中,但有时会得到未完全渲染的输出光栅Javascript QWebPage中的QImage未完全呈现,javascript,google-maps,pyqt,Javascript,Google Maps,Pyqt,我希望在图像完全加载时将页面内容保存到图像中,但有时会得到未完全渲染的输出光栅 import sys import signal import os from PyQt4.QtCore import * from PyQt4.QtGui import * from PyQt4.QtWebKit import QWebPage app = QApplication(sys.argv) signal.signal(signal.SIGINT, signal.SIG_DFL) webpage = Q
import sys
import signal
import os
from PyQt4.QtCore import *
from PyQt4.QtGui import *
from PyQt4.QtWebKit import QWebPage
app = QApplication(sys.argv)
signal.signal(signal.SIGINT, signal.SIG_DFL)
webpage = QWebPage()
def onLoadFinished(result):
if not result:
print "Request failed"
sys.exit(1)
webpage.setViewportSize(webpage.mainFrame().contentsSize())
image = QImage(webpage.viewportSize(), QImage.Format_ARGB32)
painter = QPainter(image)
webpage.mainFrame().render(painter)
painter.end()
if os.path.exists("output.png"):
os.remove("output.png")
image.save("output.png")
sys.exit(0) # quit this application
webpage.mainFrame().load(QUrl("file:///page.html"))
webpage.connect(webpage, SIGNAL("loadFinished(bool)"), onLoadFinished)
sys.exit(app.exec_())
该页面正在使用JavaScript(onload函数)获取谷歌地图(640x640px)
结帐。使用QWebPage.mainFrame().evaluateJavaScript()
方法添加此javascript代码:
google.maps.event.addListenerOnce(map, 'idle', function(){
// do something only the first time the map is loaded
});
您可能还会发现该方法很有用。签出。使用QWebPage.mainFrame().evaluateJavaScript()
方法添加此javascript代码:
google.maps.event.addListenerOnce(map, 'idle', function(){
// do something only the first time the map is loaded
});
您可能也会发现该方法很有用。这可能是因为图像是在页面加载完成后使用Ajax加载的。这有用吗?可能是因为图像是在页面加载完成后使用Ajax加载的。这有用吗?