GChart 2.41 is out and it incorporates a getMouseCoordinate method and adds an improved version of the simple line chart editor I linked to above to the "Chart Gallery" and live demo. Thanks for adding your request for these features to the GChart issue tracker. See this related post for more details about v2.41:
http://groups.google.com/group/Google-Web-Toolkit/msg/137e190dfa0c17af John On Feb 3, 11:20 am, saurabh hirani <saurabh.hir...@gmail.com> wrote: > On Feb 2, 6:54 pm, saurabh hirani <saurabh.hir...@gmail.com> wrote: > > > > > Hi John, > > > > Just added a new example chart titled "World's Simplest Line Chart > > > Editor" that shows you how to add points to a Client-sideGChartcurve > > > by clicking on empty space on the chart (you'll need to download the > > > latest v2.4 version of Cllient-sideGChartto use this code): > > > > Code:http://gchart.googlecode.com/svn/trunk/gcharttestapp/src/com/googleco... > > > Screen-shot:http://gchart.googlecode.com/svn/trunk/gchart/src/com/googlecode/gcha... > > > Thanks a lot for providing such a thorough explanation of how this can > > be done. I really appreciate your putting in time to answer these > > queries. I will download 2.4 and check it out. > > > Basically, I wanted to do this because I wanted to highlight an area > > of an already drawn chart. In the meantime, while I could not know how > > to do this, I had checked out orkut's photo-tagging feature which > > allows us to draw a rectangle over an already existing image. While I > > implemented drawing a rectangle over an image using GWT with client > > cordinates, I realized that it fails when my image is larger than my > > browser window. Because as I scroll down or on the side my client > > cordinates with respect to a reference point at the top are lost. As > > in, my image's top left edge whose cordinate was say (20, 100) before > > I scroll is no longer in the frame and (20, 100) becomes the cordinate > > of the point at the top left of the browser window which is not the > > top left edge but a portion of the image which came into picture when > > I scrolled down. I saw that you are using clientX and clientY. So I > > thought maybe this information would be useful. > > And due to your example I found the missing piece to my puzzle. > getScrollLeft and getScrollTop - I was searching for methods which > could give me these cordinates to solve the problem as described > above. I was studying your code and I used it in my work of drawing > rectangle using GWT and it worked. Thanks a lot. > > - Saurabh --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To post to this group, send email to Google-Web-Toolkit@googlegroups.com To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/Google-Web-Toolkit?hl=en -~----------~----~----~----~------~----~------~--~---
