[kde-edu]: GSoC Proposal: KidDraw

Anne-Marie Mahfouf annemarie.mahfouf at free.fr
Fri Apr 25 10:28:42 CEST 2008


It looks you did not get a GSoC but we think such an application is needed in 
Do you have plans to still work on it and do you need help doing so? We would 
be happy hosting the code in playground/edu and start KDEify it!

Best regards,


Le Friday 21 March 2008 11:22:41 pm Cheetah, vous avez écrit :
> Hello,
> Since I'm new here, I'll first introduce myself: I'm Wouter Haffmans, a 23
> year old student Computer Science at the University of Technology Eindhoven
> (in the Netherlands).  I want to submit a proposal for GSoC next week, with
> a new suggestion for KDE Edu, which will hopefully get me involved in the
> KDE community. So far I've only been following development, and I think
> it's time for me to start actively participating. GSoC seems to be the
> perfect opportunity. So, here's the idea:
> In the past I've made a small and simple drawing application as a high
> school assignment. The target group were young children who are not able to
> use a computer mouse all too well yet. That assignment was made in Delphi.
> As I myself have a son now, I decided to remake that application to Qt 4.
> Part of it is done, but it still needs lots of work and improvement.
> I want to submit KidDraw (which is its very original name) as GSoC project
> to help KDE Edu to something new and unique. I think it fits KDE Edu best
> since it helps kids learn how to use the mouse and explore their creativity
> in a fun way, though I suppose it could also fit in KDE Graphics... I'm not
> entirely sure about that.
> This has been done for KidDraw so far (see
> http://svn.simply-life.net/KidDraw/trunk/ for the current code):
> The UI is simple, kid-friendly. It already shows the canvas, which is
> QGraphics based. The "live" rendering is done on an extra cached QImage
> though (like the Qt scribbly example), as that seemed to perform much
> better in my tests. Drawing is done by clicking any mouse button (not just
> the left one). On the left and right the color palette is shown: simply
> hovering the mouse over a color will select it. The same goes for the line
> widths, which can be picked at the bottom. The buttons are big and thus
> easy to hit.
> The canvas also already supports the loading of a background image, which
> can be used for coloring sheets as well as connect-the-dots like stuff.
> Tasks that would be for GSoC:
> - KDEify KidDraw, it's just a Qt app now. It already uses CMake, but other
> than that it's all just Qt 4.
> - When changing a palette, the lines that were already drawn will need to
> change colors as well.
> - Allow saving and reloading of pictures. All line items will need to
> remain intact (because of the palette changes).
> - Create "Image Pickers" at the top of the canvas, which show thumbnails of
> saved images. Clicking one loads the image into the canvas, and also saves
> the canvas image to that slot. This way a child doesn't need to know about
> files or filenames.
> - Make a big "Clear" button to clear the canvas.
> - Custom color palettes, possibly with HotNewStuff integration.
> - Export images, saving them to a PNG/JPG/SVG file on disk. This is
> something parents probably will need to help with, so its UI can be more
> "complicated" (i.e. a menu).
> - Printing support to print the canvas image.
> - UI to load background images.
> - UI for editing (and creating new) color palettes.
> - Settings panel, especially with settings on when clicking/dragging is
> necessary (for younger kids clicking to toggle the pen up/down may be
> better than having to drag with the mouse pressed, etc).
> - Option to set a picture as desktop background. I'm not exactly sure how
> feasable it is to make this cross platform, considering obvious differences
> between Plasma, Windows and OS X.
> - A "Color Sheet" mode, which makes a click on the canvas fill the area
> with the selected color rather than drawing lines.
> - If there's more time: a "Connect the dots" mode, which requires the user
> to draw lines from dot to dot (again using polygons as the points of the
> dots). Once all dots have been connected, KidDraw could switch to Color
> Sheet mode to allow filling of the drawn lines. To add a "surprise" effect,
> the dots that do not need to be connected yet (e.g. dots 3 and higher at
> the start) could remain hidden until they need to be visible.
> Altogether I think there is more than enough to be done during the three
> months of GSoC, but more suggestions, ideas, criticism, advice etc. is more
> than welcome before I submit my GSoC application.
> Wouter
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