62 lines
1.3 KiB
Python
62 lines
1.3 KiB
Python
|
#!/opt/bin/lv_micropython -i
|
||
|
|
import usys as sys
|
||
|
|
import lvgl as lv
|
||
|
|
import display_driver
|
||
|
|
from imagetools import get_png_info, open_png
|
||
|
|
|
||
|
|
# Register PNG image decoder
|
||
|
|
decoder = lv.img.decoder_create()
|
||
|
|
decoder.info_cb = get_png_info
|
||
|
|
decoder.open_cb = open_png
|
||
|
|
|
||
|
|
# Create an image from the png file
|
||
|
|
try:
|
||
|
|
with open('../../assets/img_cogwheel_argb.png','rb') as f:
|
||
|
|
png_data = f.read()
|
||
|
|
except:
|
||
|
|
print("Could not find img_cogwheel_argb.png")
|
||
|
|
sys.exit()
|
||
|
|
|
||
|
|
img_cogwheel_argb = lv.img_dsc_t({
|
||
|
|
'data_size': len(png_data),
|
||
|
|
'data': png_data
|
||
|
|
})
|
||
|
|
|
||
|
|
def set_angle(img, v):
|
||
|
|
img.set_angle(v)
|
||
|
|
|
||
|
|
def set_zoom(img, v):
|
||
|
|
img.set_zoom(v)
|
||
|
|
|
||
|
|
|
||
|
|
#
|
||
|
|
# Show transformations (zoom and rotation) using a pivot point.
|
||
|
|
#
|
||
|
|
|
||
|
|
# Now create the actual image
|
||
|
|
img = lv.img(lv.scr_act())
|
||
|
|
img.set_src(img_cogwheel_argb)
|
||
|
|
img.align(lv.ALIGN.CENTER, 50, 50)
|
||
|
|
img.set_pivot(0, 0) # Rotate around the top left corner
|
||
|
|
|
||
|
|
a1 = lv.anim_t()
|
||
|
|
a1.init()
|
||
|
|
a1.set_var(img)
|
||
|
|
a1.set_custom_exec_cb(lambda a,val: set_angle(img,val))
|
||
|
|
a1.set_values(0, 3600)
|
||
|
|
a1.set_time(5000)
|
||
|
|
a1.set_repeat_count(lv.ANIM_REPEAT.INFINITE)
|
||
|
|
lv.anim_t.start(a1)
|
||
|
|
|
||
|
|
a2 = lv.anim_t()
|
||
|
|
a2.init()
|
||
|
|
a2.set_var(img)
|
||
|
|
a2.set_custom_exec_cb(lambda a,val: set_zoom(img,val))
|
||
|
|
a2.set_values(128, 256)
|
||
|
|
a2.set_time(5000)
|
||
|
|
a2.set_playback_time(3000)
|
||
|
|
a2.set_repeat_count(lv.ANIM_REPEAT.INFINITE)
|
||
|
|
lv.anim_t.start(a2)
|
||
|
|
|
||
|
|
|