acid-drop

- Hacking the planet from a LilyGo T-Deck using custom firmware
git clone git://git.acid.vegas/acid-drop.git
lv_example_img_2.py (2191B)
      1 #!/opt/bin/lv_micropython -i
      2 import usys as sys
      3 import lvgl as lv
      4 import display_driver
      5 from imagetools import get_png_info, open_png
      6 
      7 # Register PNG image decoder
      8 decoder = lv.img.decoder_create()
      9 decoder.info_cb = get_png_info
     10 decoder.open_cb = open_png
     11 
     12 # Create an image from the png file
     13 try:
     14     with open('../../assets/img_cogwheel_argb.png','rb') as f:
     15         png_data = f.read()
     16 except:
     17     print("Could not find img_cogwheel_argb.png")
     18     sys.exit()
     19 
     20 img_cogwheel_argb = lv.img_dsc_t({
     21   'data_size': len(png_data),
     22   'data': png_data
     23 })
     24 
     25 def create_slider(color):
     26     slider = lv.slider(lv.scr_act())
     27     slider.set_range(0, 255)
     28     slider.set_size(10, 200)
     29     slider.set_style_bg_color(color, lv.PART.KNOB)
     30     slider.set_style_bg_color(color.color_darken(lv.OPA._40), lv.PART.INDICATOR)
     31     slider.add_event_cb(slider_event_cb, lv.EVENT.VALUE_CHANGED, None)
     32     return slider
     33 
     34 def slider_event_cb(e):
     35     # Recolor the image based on the sliders' values
     36     color  = lv.color_make(red_slider.get_value(), green_slider.get_value(), blue_slider.get_value())
     37     intense = intense_slider.get_value()
     38     img1.set_style_img_recolor_opa(intense, 0)
     39     img1.set_style_img_recolor(color, 0)
     40 
     41 #
     42 # Demonstrate runtime image re-coloring
     43 #
     44 # Create 4 sliders to adjust RGB color and re-color intensity
     45 red_slider = create_slider(lv.palette_main(lv.PALETTE.RED))
     46 green_slider = create_slider(lv.palette_main(lv.PALETTE.GREEN))
     47 blue_slider = create_slider(lv.palette_main(lv.PALETTE.BLUE))
     48 intense_slider = create_slider(lv.palette_main(lv.PALETTE.GREY))
     49 
     50 red_slider.set_value(lv.OPA._20, lv.ANIM.OFF)
     51 green_slider.set_value(lv.OPA._90, lv.ANIM.OFF)
     52 blue_slider.set_value(lv.OPA._60, lv.ANIM.OFF)
     53 intense_slider.set_value(lv.OPA._50, lv.ANIM.OFF)
     54 
     55 red_slider.align(lv.ALIGN.LEFT_MID, 25, 0)
     56 green_slider.align_to(red_slider, lv.ALIGN.OUT_RIGHT_MID, 25, 0)
     57 blue_slider.align_to(green_slider, lv.ALIGN.OUT_RIGHT_MID, 25, 0)
     58 intense_slider.align_to(blue_slider, lv.ALIGN.OUT_RIGHT_MID, 25, 0)
     59 
     60 # Now create the actual image
     61 img1 = lv.img(lv.scr_act())
     62 img1.set_src(img_cogwheel_argb)
     63 img1.align(lv.ALIGN.RIGHT_MID, -20, 0)
     64 
     65 lv.event_send(intense_slider, lv.EVENT.VALUE_CHANGED, None)
     66 
     67 
     68 
     69 
     70