How does Chrome browser capture a thumbnail image of most visited URLs and show me over a blank page under Most visited??
I am interested in knowing how I would implement it using for my website or an extension.. to take take screenshot.
Lalith
I can only tell you how would I implement it. Once you would go to a site, I will add 1 to a counter if how many times you've entered it. If it's in the top 10, I would also take a screen shot of the site (chrome has a window in the class "Chrome_RenderWidgetHostHWND" which is the window that only contains the site, not the buttons and menus around it).
I can only guess it's not too far from what the guys in Google did.
If you want to write an extension that captures a screenshot of a current site then there is chrome.tabs.captureVisibleTab() method.
I think that it takes a screenshot from the last time you visited the page and saves it in the "Top Sites" SQLite database file that can be found in your profile folder.
Related
My upcoming mobile web project requires viewing dynamically chosen pdf files inside the webpage. I am using iFrame to display the pdf file and the file can be scrolled using two-finger scrolling. But the problems I am facing are:
The first page of the file is not displayed completely on the iPad and gets cut off along the width unlike when I view it on the desktop browsers where the first page of the pdf is always entirely displayed although zoomed out to fit in the iFrame area.
There is no visual indication for the users that the pdf document can be scrolled, i.e., there is no scroll bar on the pdf document.
The controls (page navigation, zoom etc.) for the pdf viewer (Adobe reader) don't appear on the document unlike when I see it on the desktop browsers.
What is the best way to achieve what I am trying to do? Do any of you experts know any solutions/workarounds to the problems I am facing? An entirely different approach using anything other than iFrame can also be considered.
The reason why the pdf should be inside the html page is that, the list of pdf files will be on a menu bar on the left side of the page and the user can click on any of them to view on the same page. Ideally, they will have the capability to toggle between full screen view and that view.
Any help is appreciated.
I created a tiny JavaScript module that helps you to show a PDF inline and be able to scroll it. But I also couldn't figure out a way to make it fit the total width of the parent container.
Check it out: https://github.com/williamrjribeiro/ipdf-scroll
Cheers.
I came across this Recommended way to embed PDF in HTML? while researching on the web to find an answer.
The mentioned link discusses about some options that I can use and the google document viewer works for me though don't know if there is anything (like data limit) I need to be aware of before using it on the website. Also I have no idea if it is a good solution (though the full screen mode is not available, but zoom-in/zoom-out and next/prev page buttons are there are show up in the mobile safari on the iPad) to use for an web app that will be run on the iPad.
Anyway, I will keep researching for a better solution and if i don't find any, I'll stick to the google document viewer.
The issue appears to be a bug with Safari on the IPad.
I didn't find a solution for embedding the pdf in html but I did find this:
If you return FileStreamResult from your controller action instead of a view, the pdf will open in a new tab, it's not embedded html but at least your user is not having to download files and open them manually.
I had the same problem of the pdf not being displayed completely. The only thing I found to fix this was the change the size of the div containing the pdf.
For example if the element containing the pdf is a div then I change its width to any value and the rollback to the value it had before. Changing Width or height any one works.
Sometimes I had to wait a little using a setTimeout before calling my resizable method
I've just started making an iPad app using Phonegap.
On one of my pages I access the camera, take a picture, display that picture on the page and then have a number of customisable options (resizing, positioning of other elements that can be dragged on top of the image etc)
Once you click on a different link (tab bar item) however, all of this information is lost and you have to start over once you go back to the photo page. Is there a way to capture the web page in it's current state, or even grab each elements information (position on page, last photo taken etc) individually so that when the user goes back to the next screen, everything loads as it were when the user left the screen.
Hope this makes sense and someone can help! Thanks in advance!
I'm just a beginner Phonegap developer myself, but I believe you probably want to look into localStorage. http://docs.phonegap.com/en/1.2.0/phonegap_storage_storage.md.html#localStorage
You'll need to use JavaScript (and perhaps a library like jQuery) to get various data about the page's current state. Once you know them, you should be able to to store them for retrieval in subsequent sessions later via localStorage.
I hope this helps.
I have some code that generates a pdf from text files, and adds bookmarks to various locations within said pdf using UIGraphicsAddPDFContextDestinationAtPoint and UIGraphicsSetPDFContextDestinationForRect. The UIWebView appears to be bugged, where clicking certain bookmarks temporarily renders other bookmarks to send the view to the top of the document. I say "temporarily" because clicking on an unaffected bookmark seems to reset all bookmarks so they point where they are supposed to.
This doesn't appear to be a coding problem, as it only occurs in UIWebView. When I open the pdf in iBooks, the links always work fine. However I would prefer to view the pdf in app, and the only other ways to do it that I'm aware of (UIImageView & UISliderView) would probably eliminate the bookmarks altogether. So I'm hoping there could be a way to fix UIWebView so this problem no longer occurs.
Any suggestions?
I have a list of menu items and content in a single page. In PC browser or ipad, I want to see both parts in the same page. But in the smaller devices such as iphone and android phone, I want to separate the two so that you selects one of menu items in a page and see its content when he clicks it.
Jquery mobile demo page already does it. But I can't figure out how I can achieve it. Can someone explain or point to any good reference? Thanks
You may take a look at the following blog post which illustrates how you could organize your views so that based on the client type you could provide different contents.
The goal is to 'soften' hyperlinks off to external content slightly by displaying an external link bar at the top of the window, that displays above the content on the external website - containing a line of text that reads something along the lines of "The content you are viewing is not owned by this site, close this browser window to return to site name".
I know there's a way to achieve this using frames, but as far as I understand it frames are bad news for accessibility. Furthermore, if the user then accesses a site which itself has a frame set, there can be all sorts of fun and games!
Would welcome any feedback. Could something like this be achievable with jQuery perhaps?
No, you need to use frames. You need to have some degree of control, and the only way you can do that with remote addresses, is by keeping the user on your server, and showing the remote pages in a frame.
That being said, if the remote sites have a partnership with you, you could discuss a javascript option which displays a bar on the top of their pages whenever a specific cookie is set indicating the traffic came from your site initially.