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"""
bumpmap.py - S.Fourmanoit <syfou@users.sourceforge.net>, 2005
Short, but more involved adesklets test script. It demonstrates
Imlib2 dynamic filtering capabilities and how you can modify
a background image dynamically.
Note: I strongly advise against using an effect that CPU intensive
in real life desklets - remember adesklets was made to be 'light'.
To try it:
- Install adesklets with python support enabled (default)
- Run python bumpmap.py from this directory.
"""
import adesklets
class My_Events(adesklets.Events_handler):
x = 100 # Initial spot position
y = 100
def __init__(self):
adesklets.Events_handler.__init__(self)
def __del__(self):
adesklets.Events_handler.__del__(self)
def ready(self):
adesklets.window_resize(200,200)
adesklets.window_set_background_image(adesklets.clone_image())
adesklets.window_set_transparency(True)
adesklets.window_reset(adesklets.WINDOW_MANAGED)
# Now, let us set a 'Test!' text on foreground image:
# we will not modify it any more
#
adesklets.context_set_image(0)
adesklets.context_set_font(adesklets.load_font('Vera/60'))
adesklets.context_set_color(255,0,0,200)
adesklets.context_set_direction(adesklets.TEXT_TO_ANGLE)
adesklets.context_set_angle(45)
adesklets.text_draw(20,0,'Test!')
adesklets.free_font(0)
adesklets.window_show()
def background_grab(self,delayed):
self._display()
def motion_notify(self, delayed, x, y):
if not delayed:
self.x = x
self.y = y
self._display()
def _display(self):
"""
The drawing method. Please remember this nomenclature:
image 0: foreground image, left untouched here
image 1: original background, automatically kept up to date
by adesklets - hence we keep ourselves from modify it.
image 2: Our displayed background - set My_Events::ready() for
initialisation details
image 3: transient image on which we operate the
current transformation, before updating image 2
and destroying it.
"""
adesklets.context_set_image(1)
adesklets.context_set_image(adesklets.clone_image())
adesklets.apply_filter("bump_map_point(x=%d,y=%d);" % (self.x, self.y))
adesklets.context_set_image(2)
adesklets.blend_image_onto_image(3,0,0,0,200,200,0,0,200,200)
adesklets.free_image(3)
My_Events().pause()
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