QWebView too slow

I'm writing a sample Qt application and using QWebView for a tiny custom browser.
But till now I found 2 major issues with QWebView, like ...

1. Its too slow to display the url using QWebView as compared to web browser (ex: Firefox)
2. QWebView is not rendering Flash movies

So, want to know why QWebView is slow as compared to Firefox.

Thank you.

In general WebKit tends to be faster than Firefox, so this is probably some configuration issue on your system. Flash should work as well, provided you have an ns-plugin for it installed. If you can see flash in Firefox, it means you do - whether WebKit can find it, that's a different issue. See the docs for QtWebKit about support for netscape plugins.

Edit: here is an example code that works for me:

Code:

---

#include <QtGui>
#include <QtWebKit>
 
 
int main(int argc, char **argv){
  QApplication app(argc, argv);
  QWebView wv;
  QWebPage *page = wv.page();
  QWebSettings *settings = page->settings();
  settings->setAttribute(QWebSettings::JavascriptEnabled, true);
  settings->setAttribute(QWebSettings::PluginsEnabled, true);
  wv.load(QUrl("http://www.youtube.com"));
  wv.show();
  return app.exec();
}

---

Hi

I have done my first sample in QtWebkit with the help of your below code.Thank you.
I am able to run any URL using this.

When I try to run the below URL in Firefox (MAC OS), it is played with the help of Flip4Mac plugin.
http://www.researchchannel.org/webcast/asx/rtv-high.asx
The QWebView cannot play this URL, and the debugger shows the below error.
Error loading /Library/Internet Plug-Ins/DRM Plugin.bundle/Contents/MacOS/DRM Plugin: dlopen(/Library/Internet Plug-Ins/DRM Plugin.bundle/Contents/MacOS/DRM Plugin, 262): no suitable image found. Did find:
/Library/Internet Plug-Ins/DRM Plugin.bundle/Contents/MacOS/DRM Plugin: unknown file type, first eight bytes: 0x4A 0x6F 0x79 0x21 0x70 0x65 0x66 0x66
Debugger() was called!

Is this error in QtWebkit.

Regards,
Jay.

Is anyone having idea on this?

Regards,
Jay.

hi,

@wysota, when you says "so this is probably some configuration issue on your system." could you tell me what kind of configuration is intended to work the best?

I compiled qt with webkit for windowsCE, and I have poor Javascript performances. Any ideas??

Regards,

I have posted that sentence over three months ago so I don't remember what I meant exactly.

How did you measure javascript performance?

Quote:

---

Originally Posted by wysota

In general WebKit tends to be faster than Firefox, so this is probably some configuration issue on your system. Flash should work as well, provided you have an ns-plugin for it installed. If you can see flash in Firefox, it means you do - whether WebKit can find it, that's a different issue. See the docs for QtWebKit about support for netscape plugins.

Edit: here is an example code that works for me:

Code:

---

#include <QtGui>
#include <QtWebKit>
 
 
int main(int argc, char **argv){
  QApplication app(argc, argv);
  QWebView wv;
  QWebPage *page = wv.page();
  QWebSettings *settings = page->settings();
  settings->setAttribute(QWebSettings::JavascriptEnabled, true);
  settings->setAttribute(QWebSettings::PluginsEnabled, true);
  wv.load(QUrl("http://www.youtube.com"));
  wv.show();
  return app.exec();
}

---

---

can Confirm very slow javascript dom with pyqt4 , qwebview
I ve heard that webkit is very fast and google chrome runs very well on my system, dell latitude D830 ,MEPIS 11KDE pyqt 4.7.1
But a very simple widget that displays a slideshow with fade out / in transitions , runs very slowly

Thanks you for your observations.

Was there a purpose to resurrecting this 2+ year old thread?

Quote:

---

Originally Posted by ChrisW67

Thanks you for your observations.

Was there a purpose to resurrecting this 2+ year old thread?

---

What do u mean?

Yes there is a purpose: Qwebview STILL performs slow on some tasks..
Some more observations:
Qwebview runs ok when image transitions are made on the background image of a div , very common practice for image galleries..

Qwebview does not perform well when transitions are made on the img tag example

The URL you provided works fine for me in QWebView with Qt 4.7. I suggest you do some more testing next time before you spam a forum with your claims that something doesn't work as it should.