Wrong coordinates iMac retina

[gear48]

Hi

I work with Kivy on mac os ElCapitan

I have two mac: one old macbook pro (1920,1200) and one iMac retina (5120,2880)

I have a problème with Scatter and the multitouch

I follow the video on pythonmobile.blogspot about Scatter

I join you the 2 files

The files run correctly on mac book pro

On Imac

A red dot appear in the middle of point (0,0) and point of my right click

As I lose the point of my click it 's impossible to remove this red doc with a left  click

Can you help me

Regards

[Bill Janssen]

The retina support does not seem to be working properly.  I think the problem is that in kivy/core/window/_window_sdl2.pyx, setup_window(), the SDL_WINDOW_ALLOW_HIGHDPI flag should only be set in the USE_IOS branch, not in the main branch.

[Thomas Chen]

I intercept all my touch events and transform the coordinates when I'm on a retina screen using this:

    @property
    def mouse_pos(self):
        if self.retina:
            return [xy * 2 for xy in Window.mouse_pos]
        else:
            return Window.mouse_pos

If I define this property on widgets that need to handle touch then I set self.retina=True using a my kivy.ini file. It's not ideal, but it lets me continue working until a fix is added to the official distribution.

On Tuesday, June 7, 2016 at 1:17:56 AM UTC-7, gear48 wrote:

[Alexander Taylor]

I think this may have been fixed in master.