Re: [Haskell-cafe] Study GUI and FRP sequentially or concurrently? Superimposing graphics and text.

Reactive-banana can work with GTK?! Heinrich, Oliver, should perhaps the bindings at https://github.com/ocharles/hadoom/blob/master/hadoom-editor/Reactive/Banana... be referred to from the reactive banana homepage? On Wed, Jan 7, 2015 at 2:32 AM, Oliver Charles wrote:

Jeffrey Brown writes:

...

Hi!

I want to write a mindmapping app, like Freeplane, which involves drawing rectangles containing text and arrows connecting them. For that purpose, today I installed reactive-banana, wxWidgets, wxHaskell and reactive-banana-wx. (It's the first complex install for which I didn't have to write the list for help!)

Am I correct that the question of whether graphics can be superimposed over text depends only on wxHaskell, and not reactive-banana? Would you recommend first writing code that uses only wxHaskell, to become familiar with the library, or jumping right in by using reactive-banana at the same time?

Hi Jeffrey,

You might be interested in the work I'm doing on a 2D level editor for a game I'm building. The game is "hadoom", and it's a clone of Doom (inventive name, eh?). The level editor is top-down cartography software, and you can see fairly recent screenshots here:

http://t.co/LgMRHw2y0Z http://t.co/O2DhKZWwcG

There is also an old video here

https://www.youtube.com/watch?v=Cfc4QkfAHx4

Anyway, the reason I say this might be interesting, is this is built using reactive-banana, GTK, and the "diagrams" library. I've found this a really nice way of building an interactive GUI such as this - GTK gives me the basic framework of the application, and I use a GtkDrawingArea for the main canvas. I then model all interaction through reactive-banana, and finally output a Diagram at the end. I use the diagrams-cairo backend to render this directly into the GtkDrawingArea.

The source code for this is at

https://github.com/ocharles/hadoom/tree/master/hadoom-editor

though I should warn you it's somewhat in a state of rapid development, so things may change wildly. However, the basic approach of using GTK, reactive-banana & diagrams will not change.

Hope this helps!

-- ocharles