#!/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 create_slider(color):
	slider = lv.slider(lv.scr_act())
			 slider.set_range(0, 255)
			 slider.set_size(10, 200)
			 slider.set_style_bg_color(color, lv.PART.KNOB)
			 slider.set_style_bg_color(color.color_darken(lv.OPA._40), lv.PART.INDICATOR)
			 slider.add_event_cb(slider_event_cb, lv.EVENT.VALUE_CHANGED, None)
			 return slider

					def slider_event_cb(e):
# Recolor the image based on the sliders' values
					color  = lv.color_make(red_slider.get_value(), green_slider.get_value(), blue_slider.get_value())
							 intense = intense_slider.get_value()
									   img1.set_style_img_recolor_opa(intense, 0)
									   img1.set_style_img_recolor(color, 0)

#
# Demonstrate runtime image re-coloring
#
# Create 4 sliders to adjust RGB color and re-color intensity
									   red_slider = create_slider(lv.palette_main(lv.PALETTE.RED))
											   green_slider = create_slider(lv.palette_main(lv.PALETTE.GREEN))
													   blue_slider = create_slider(lv.palette_main(lv.PALETTE.BLUE))
															   intense_slider = create_slider(lv.palette_main(lv.PALETTE.GREY))

																	   red_slider.set_value(lv.OPA._20, lv.ANIM.OFF)
																	   green_slider.set_value(lv.OPA._90, lv.ANIM.OFF)
																	   blue_slider.set_value(lv.OPA._60, lv.ANIM.OFF)
																	   intense_slider.set_value(lv.OPA._50, lv.ANIM.OFF)

																	   red_slider.align(lv.ALIGN.LEFT_MID, 25, 0)
																	   green_slider.align_to(red_slider, lv.ALIGN.OUT_RIGHT_MID, 25, 0)
																	   blue_slider.align_to(green_slider, lv.ALIGN.OUT_RIGHT_MID, 25, 0)
																	   intense_slider.align_to(blue_slider, lv.ALIGN.OUT_RIGHT_MID, 25, 0)

# Now create the actual image
																	   img1 = lv.img(lv.scr_act())
																			   img1.set_src(img_cogwheel_argb)
																			   img1.align(lv.ALIGN.RIGHT_MID, -20, 0)

																			   lv.event_send(intense_slider, lv.EVENT.VALUE_CHANGED, None)





