Re: Mouse events on a Cairo Context

2013-07-03 Thread Borja Mon Serrano
Hi, Thank you for your help, guys. Finally I tried with goocanvasmm and everything works fine, as I wanted. There are some simple examples in the libgoocanvasmm-2.0-doc package for Ubuntu, so I could deal with the problem :) The most similar example there is "moving_shapes". Thank you! __

Re: Mouse events on a Cairo Context

2013-07-01 Thread Dov Grobgeld
There is another solution that I have used extensively, which is to draw the cairo commands twice. Once for the actual drawing, and once again in an offline image (called label image), with the following differences: 1. Use solid colors corresponding to "labels" of the different graphical co

Re: Mouse events on a Cairo Context

2013-07-01 Thread Stefan Salewski
On Mon, 2013-07-01 at 17:42 +0200, Borja Mon Serrano wrote: > > The problem with (4) is drag&drop. I think it could be very difficult to > deal with it, so I'm going to try the third solution, with goocanvasmm. Do > you know any example of use of goocanvasmm? > Yes, drag&drop may be not very ea

Re: Mouse events on a Cairo Context

2013-07-01 Thread Borja Mon Serrano
Hi Colomban This is probably the simplest solution, it's meant for this kind of things. > > 4 - Handle the events yourself: listen to the > button-press-event/button-release-event of your DrawingArea and do the > math to know whether the click is on your circle or not. Maybe Cairo > has this ki

Re: Mouse events on a Cairo Context

2013-06-30 Thread Colomban Wendling
Le 30/06/2013 21:10, Borja Mon Serrano a écrit : > Hi all, > > [...] > > 1 - I think the best way is to create a signal to the cairomm context, but > I didn't see anything to do that. Maybe the way would be to create a cairo > surface or something like that. I don't think Cairo has this kind of

Mouse events on a Cairo Context

2013-06-30 Thread Borja Mon Serrano
Hi all, I'm developing an application with C++ and GTK3 but I'm stucked. I've created a visual application with glade which has three columns and one of them, the middle one, is a DrawingArea. In that DrawingArea I want to draw some circles at the point I want to after pressing a button and have d