75 lines
1.9 KiB
Python
75 lines
1.9 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/imgbtn_left.png','rb') as f:
|
||
|
|
imgbtn_left_data = f.read()
|
||
|
|
except:
|
||
|
|
print("Could not find imgbtn_left.png")
|
||
|
|
sys.exit()
|
||
|
|
|
||
|
|
imgbtn_left_dsc = lv.img_dsc_t({
|
||
|
|
'data_size': len(imgbtn_left_data),
|
||
|
|
'data': imgbtn_left_data
|
||
|
|
})
|
||
|
|
|
||
|
|
try:
|
||
|
|
with open('../../assets/imgbtn_mid.png','rb') as f:
|
||
|
|
imgbtn_mid_data = f.read()
|
||
|
|
except:
|
||
|
|
print("Could not find imgbtn_mid.png")
|
||
|
|
sys.exit()
|
||
|
|
|
||
|
|
imgbtn_mid_dsc = lv.img_dsc_t({
|
||
|
|
'data_size': len(imgbtn_mid_data),
|
||
|
|
'data': imgbtn_mid_data
|
||
|
|
})
|
||
|
|
|
||
|
|
try:
|
||
|
|
with open('../../assets/imgbtn_right.png','rb') as f:
|
||
|
|
imgbtn_right_data = f.read()
|
||
|
|
except:
|
||
|
|
print("Could not find imgbtn_right.png")
|
||
|
|
sys.exit()
|
||
|
|
|
||
|
|
imgbtn_right_dsc = lv.img_dsc_t({
|
||
|
|
'data_size': len(imgbtn_right_data),
|
||
|
|
'data': imgbtn_right_data
|
||
|
|
})
|
||
|
|
|
||
|
|
# Create a transition animation on width transformation and recolor.
|
||
|
|
tr_prop = [lv.STYLE.TRANSFORM_WIDTH, lv.STYLE.IMG_RECOLOR_OPA, 0]
|
||
|
|
tr = lv.style_transition_dsc_t()
|
||
|
|
tr.init(tr_prop, lv.anim_t.path_linear, 200, 0, None)
|
||
|
|
|
||
|
|
style_def = lv.style_t()
|
||
|
|
style_def.init()
|
||
|
|
style_def.set_text_color(lv.color_white())
|
||
|
|
style_def.set_transition(tr)
|
||
|
|
|
||
|
|
# Darken the button when pressed and make it wider
|
||
|
|
style_pr = lv.style_t()
|
||
|
|
style_pr.init()
|
||
|
|
style_pr.set_img_recolor_opa(lv.OPA._30)
|
||
|
|
style_pr.set_img_recolor(lv.color_black())
|
||
|
|
style_pr.set_transform_width(20)
|
||
|
|
|
||
|
|
# Create an image button
|
||
|
|
imgbtn1 = lv.imgbtn(lv.scr_act())
|
||
|
|
imgbtn1.set_src(lv.imgbtn.STATE.RELEASED, imgbtn_left_dsc, imgbtn_mid_dsc, imgbtn_right_dsc)
|
||
|
|
imgbtn1.add_style(style_def, 0)
|
||
|
|
imgbtn1.add_style(style_pr, lv.STATE.PRESSED)
|
||
|
|
|
||
|
|
imgbtn1.align(lv.ALIGN.CENTER, 0, 0)
|
||
|
|
|
||
|
|
# Create a label on the image button
|
||
|
|
label = lv.label(imgbtn1)
|
||
|
|
label.set_text("Button")
|
||
|
|
label.align(lv.ALIGN.CENTER, 0, -4)
|
||
|
|
|