82 lines
2.7 KiB
Python
82 lines
2.7 KiB
Python
|
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_star.png','rb') as f:
|
||
|
|
png_data = f.read()
|
||
|
|
except:
|
||
|
|
print("Could not find star.png")
|
||
|
|
sys.exit()
|
||
|
|
|
||
|
|
img_star_argb = lv.img_dsc_t({
|
||
|
|
'data_size': len(png_data),
|
||
|
|
'data': png_data
|
||
|
|
})
|
||
|
|
|
||
|
|
def event_cb(e):
|
||
|
|
code = e.get_code()
|
||
|
|
obj = e.get_target()
|
||
|
|
dsc = lv.obj_draw_part_dsc_t.__cast__(e.get_param())
|
||
|
|
if code == lv.EVENT.DRAW_PART_BEGIN:
|
||
|
|
# Change the draw descriptor the 2nd button
|
||
|
|
if dsc.id == 1:
|
||
|
|
dsc.rect_dsc.radius = 0
|
||
|
|
if obj.get_selected_btn() == dsc.id:
|
||
|
|
dsc.rect_dsc.bg_color = lv.palette_darken(lv.PALETTE.GREY, 3)
|
||
|
|
else:
|
||
|
|
dsc.rect_dsc.bg_color = lv.palette_main(lv.PALETTE.BLUE)
|
||
|
|
|
||
|
|
dsc.rect_dsc.shadow_width = 6
|
||
|
|
dsc.rect_dsc.shadow_ofs_x = 3
|
||
|
|
dsc.rect_dsc.shadow_ofs_y = 3
|
||
|
|
dsc.label_dsc.color = lv.color_white()
|
||
|
|
|
||
|
|
# Change the draw descriptor the 3rd button
|
||
|
|
|
||
|
|
elif dsc.id == 2:
|
||
|
|
dsc.rect_dsc.radius = lv.RADIUS.CIRCLE
|
||
|
|
if obj.get_selected_btn() == dsc.id:
|
||
|
|
dsc.rect_dsc.bg_color = lv.palette_darken(lv.PALETTE.RED, 3)
|
||
|
|
else:
|
||
|
|
dsc.rect_dsc.bg_color = lv.palette_main(lv.PALETTE.RED)
|
||
|
|
|
||
|
|
dsc.label_dsc.color = lv.color_white()
|
||
|
|
elif dsc.id == 3:
|
||
|
|
dsc.label_dsc.opa = lv.OPA.TRANSP # Hide the text if any
|
||
|
|
|
||
|
|
if code == lv.EVENT.DRAW_PART_END:
|
||
|
|
# Add custom content to the 4th button when the button itself was drawn
|
||
|
|
if dsc.id == 3:
|
||
|
|
# LV_IMG_DECLARE(img_star)
|
||
|
|
header = lv.img_header_t()
|
||
|
|
res = lv.img.decoder_get_info(img_star_argb, header)
|
||
|
|
if res != lv.RES.OK:
|
||
|
|
print("error when getting image header")
|
||
|
|
return
|
||
|
|
else:
|
||
|
|
a = lv.area_t()
|
||
|
|
a.x1 = dsc.draw_area.x1 + (dsc.draw_area.get_width() - header.w) // 2
|
||
|
|
a.x2 = a.x1 + header.w - 1
|
||
|
|
a.y1 = dsc.draw_area.y1 + (dsc.draw_area.get_height() - header.h) // 2
|
||
|
|
a.y2 = a.y1 + header.h - 1
|
||
|
|
img_draw_dsc = lv.draw_img_dsc_t()
|
||
|
|
img_draw_dsc.init()
|
||
|
|
img_draw_dsc.recolor = lv.color_black()
|
||
|
|
if obj.get_selected_btn() == dsc.id:
|
||
|
|
img_draw_dsc.recolor_opa = lv.OPA._30
|
||
|
|
|
||
|
|
dsc.draw_ctx.img(img_draw_dsc, a, img_star_argb)
|
||
|
|
|
||
|
|
#
|
||
|
|
# Add custom drawer to the button matrix to c
|
||
|
|
#
|
||
|
|
btnm = lv.btnmatrix(lv.scr_act())
|
||
|
|
btnm.add_event_cb(event_cb, lv.EVENT.ALL, None)
|
||
|
|
btnm.center()
|
||
|
|
|