How to get the loading percentage while loading a website?

[Feng Tianba]

I want to write a callback to implement getting the loading percentage while loading a website ,where or which function can I use?

[Thiago Farina]

On Wed, May 14, 2014 at 11:08 PM, Feng Tianba <fengtia...@gmail.com> wrote:

I want to write a callback to implement getting the loading percentage while loading a website ,where or which function can I use?

Did you try figuring out your question first?

I suggest you use cs.chromium.org and look at the content/ directory, you might find something there. Also look into net/ and into download directories, that might give you an idea as well.

You might also ask those questions in chromium-discussion in the future though.

Regards,

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Thiago Farina

[Avi Drissman]

Check out RenderViewHostDelegate's DidChangeLoadProgress.

Avi

On Wed, May 14, 2014 at 10:08 PM, Feng Tianba <fengtia...@gmail.com> wrote:

I want to write a callback to implement getting the loading percentage while loading a website ,where or which function can I use?

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[Feng Tianba]

Thank you ,next time I will post such question to chromium-discussion,can you give me a link of chromium-discussion?

在 2014年5月15日星期四UTC+8上午10时44分50秒，Thiago Farina写道：

[Feng Tianba]

Thank you very much ,I will to check that ^.^

在 2014年5月15日星期四UTC+8上午11时15分05秒，Avi Drissman写道：

[Feng Tianba]

Hi I have checked the function ,and I found this function has a parameter ,but I do not know how to use this function,I want to achieve the function is when the website loaded down, I can get the state.

在 2014年5月15日星期四UTC+8上午11时15分05秒，Avi Drissman写道：

[Avi Drissman]

That function is called when the renderer reports an update on page load progress. The WebContentsImpl is the RenderViewHostDelegate. When the progress goes through, it calls the WebContentsDelegate function LoadProgressChanged. You can follow it from there, and if you're embedding content, that is where you would hook in.

[Feng Tianba]

Thand you very much,your explanation is quit useful.

在 2014年5月15日星期四UTC+8下午8时52分09秒，Avi Drissman写道：

[Feng Tianba]

Avi, the LoadProgressChanged called when the progress goes through , but I want to get the load percentage while loading a webpage,how can I do that ?

在 2014年5月15日星期四UTC+8下午8时52分09秒，Avi Drissman写道：

[Thiago Farina]

On Thu, May 15, 2014 at 10:56 PM, Feng Tianba <fengtia...@gmail.com> wrote:

Avi, the LoadProgressChanged called when the progress goes through , but I want to get the load percentage while loading a webpage,how can I do that ?

Does this [1] help you somehow?

[1] - https://code.google.com/p/chromium/codesearch#chromium/src/third_party/WebKit/Source/core/loader/ProgressTracker.h&rcl=1400145541&l=45

-- 

Thiago Farina

[Avi Drissman]

Thiago is right. Right now, only our mobile platform actually uses load progress in the UI. I am rewiring this all now but I don't know to what extent it works right now.

If our existing code isn't granular enough, you may need to fiddle with it.

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[Feng Tianba]

That is, if I want to get the percentage of loading a webpage now, then I should write my own code,and no content API I can use. Is this ？

在 2014年5月16日星期五UTC+8上午10时06分46秒，Avi Drissman写道：

[Feng Tianba]

Avi ,I want to get these date,such as before I load a webpage, I got 0,and when the webpage is loaded completely ,I got 1,I add such code in web_contents_impl.cc

void WebContentsImpl::DidChangeLoadProgress(double progress) {

#if defined(OS_ANDROID)

  if (delegate_)

  {

    delegate_->LoadProgressChanged(this, progress);

  }

#endif

  printf("\n\nexecute in didchangeloadprogress %s,%d,progress is %f\n\n", __FILE__, __LINE__, progress);

}

the printf was added by me ,but the progress value was always 0.

[Avi Drissman]

Thiago points out that this might be turned on only for Android, in which case you might need to manually go in and fix that for your use. Since you are building your own version, you shouldn't have an issue doing that.

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