Cross-compiled QtWebkit (Qt 5.2.1) cannot handle HTML pages using RaphaelJS

Question

I cross-compiled Qt 5.2.1 (including ICU and QWebKit) on TI AM335x board (ARM-based).

Then I just prepared a simple QWebView-based application to show some HTML pages on my device.

I am able to do that for most pages, but I cannot completely show pages using RaphaelJS for some animations.

I have the suspect that the cross-compiled QtWebkit has some problems in handling this kind of javascript, and I would like to grab somehow out from QWebView the javascript error console, just to see where the problem is.

Maybe I am missing during cross-compilation? Some configure parameters? Please consider that the same application compiled against Qt Desktop works fine.

Can somebody help me?

Answer 1

Ok, I found the solution: I just subclassed QWebPage (providing the implementation of javaScriptConsoleMessage function) and assigned it to my QWebView through setPage().

Here is my code:

mywebpage.h:

#ifndef MYWEBPAGE_H
#define MYWEBPAGE_H

#include <QWebPage>
#include <QDebug>

class MyWebPage : public QWebPage
{
    Q_OBJECT
public:
    explicit MyWebPage(QObject *parent = 0);

signals:

public slots:

protected:
    virtual void javaScriptConsoleMessage(const QString &message, int lineNumber, const QString &sourceID);

};

#endif // MYWEBPAGE_H

mywebpage.cpp:

#include "mywebpage.h"

MyWebPage::MyWebPage(QObject *parent) :
    QWebPage(parent)
{
}

void MyWebPage::javaScriptConsoleMessage(const QString &message, int lineNumber, const QString &sourceID)
{
    qDebug() << lineNumber << ": " << message;
}

and here is where I set the page of QWebView in my mainwindow.cpp (ui->webView is my QWebView):

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);

    mwp = new MyWebPage(this);
    ui->webView->setPage(mwp);
}

Doing so all javascript error messages are printed out on console, and I've been able to find the point in RaphaelJS where the error is generated.