You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
97 lines
2.5 KiB
97 lines
2.5 KiB
'''
|
|
Touchring
|
|
=========
|
|
|
|
Shows rings around every touch on the surface / screen. You can use this module
|
|
to check that you don't have any calibration issues with touches.
|
|
|
|
Configuration
|
|
-------------
|
|
|
|
:Parameters:
|
|
`image`: str, defaults to '<kivy>/data/images/ring.png'
|
|
Filename of the image to use.
|
|
`scale`: float, defaults to 1.
|
|
Scale of the image.
|
|
`alpha`: float, defaults to 1.
|
|
Opacity of the image.
|
|
|
|
Example
|
|
-------
|
|
|
|
In your configuration (`~/.kivy/config.ini`), you can add something like
|
|
this::
|
|
|
|
[modules]
|
|
touchring = image=mypointer.png,scale=.3,alpha=.7
|
|
|
|
'''
|
|
|
|
__all__ = ('start', 'stop')
|
|
|
|
from kivy.core.image import Image
|
|
from kivy.graphics import Color, Rectangle
|
|
from kivy import kivy_data_dir
|
|
from os.path import join
|
|
|
|
pointer_image = None
|
|
pointer_scale = 1.0
|
|
pointer_alpha = 0.7
|
|
|
|
|
|
def _touch_down(win, touch):
|
|
ud = touch.ud
|
|
with win.canvas.after:
|
|
ud['tr.color'] = Color(1, 1, 1, pointer_alpha)
|
|
iw, ih = pointer_image.size
|
|
ud['tr.rect'] = Rectangle(
|
|
pos=(
|
|
touch.x - (pointer_image.width / 2. * pointer_scale),
|
|
touch.y - (pointer_image.height / 2. * pointer_scale)),
|
|
size=(iw * pointer_scale, ih * pointer_scale),
|
|
texture=pointer_image.texture)
|
|
|
|
if not ud.get('tr.grab', False):
|
|
ud['tr.grab'] = True
|
|
touch.grab(win)
|
|
|
|
|
|
def _touch_move(win, touch):
|
|
ud = touch.ud
|
|
if not ud.get('tr.rect', False):
|
|
_touch_down(win, touch)
|
|
ud['tr.rect'].pos = (
|
|
touch.x - (pointer_image.width / 2. * pointer_scale),
|
|
touch.y - (pointer_image.height / 2. * pointer_scale))
|
|
|
|
|
|
def _touch_up(win, touch):
|
|
if touch.grab_current is win:
|
|
ud = touch.ud
|
|
win.canvas.after.remove(ud['tr.color'])
|
|
win.canvas.after.remove(ud['tr.rect'])
|
|
|
|
if ud.get('tr.grab') is True:
|
|
touch.ungrab(win)
|
|
ud['tr.grab'] = False
|
|
|
|
|
|
def start(win, ctx):
|
|
# XXX use ctx !
|
|
global pointer_image, pointer_scale, pointer_alpha
|
|
|
|
pointer_fn = ctx.config.get('image',
|
|
'atlas://data/images/defaulttheme/ring')
|
|
pointer_scale = float(ctx.config.get('scale', 1.0))
|
|
pointer_alpha = float(ctx.config.get('alpha', 1.0))
|
|
pointer_image = Image(pointer_fn)
|
|
|
|
win.bind(on_touch_down=_touch_down,
|
|
on_touch_move=_touch_move,
|
|
on_touch_up=_touch_up)
|
|
|
|
|
|
def stop(win, ctx):
|
|
win.unbind(on_touch_down=_touch_down,
|
|
on_touch_move=_touch_move,
|
|
on_touch_up=_touch_up)
|
|
|