github-code/lvgl
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

example(micropython): updated MicroPython examples according to LVGL changes (#4031)

Browse Source
This commit is contained in:
Uli Raich
2023-03-10 21:44:12 +01:00
committed by GitHub
parent 55c9a9220b
commit d1c6c61780
24 changed files with 394 additions and 225 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
examples/widgets/canvas/lv_example_canvas_1.py
View File

@@ -1,14 +1,20 @@
_CANVAS_WIDTH = 200
_CANVAS_HEIGHT = 150
LV_ZOOM_NONE = 256
LV_IMG_ZOOM_NONE = 256
rect_dsc = lv.draw_rect_dsc_t()
rect_dsc.init()
rect_dsc.radius = 10
rect_dsc.bg_opa = lv.OPA.COVER
rect_dsc.bg_grad.dir = lv.GRAD_DIR.HOR
rect_dsc.bg_grad.stops[0].color = lv.palette_main(lv.PALETTE.RED)
rect_dsc.bg_grad.stops[1].color = lv.palette_main(lv.PALETTE.BLUE)
#rect_dsc.bg_grad.stops[0].color = lv.palette_main(lv.PALETTE.RED)
#rect_dsc.bg_grad.stops[1].color = lv.palette_main(lv.PALETTE.BLUE)
rect_dsc.bg_grad.stops = [
lv.gradient_stop_t({'color': lv.palette_main(lv.PALETTE.RED)}),
lv.gradient_stop_t({'color': lv.palette_main(lv.PALETTE.BLUE), 'frac':0xff})
]
rect_dsc.border_width = 2
rect_dsc.border_opa = lv.OPA._90
rect_dsc.border_color = lv.color_white()
@@ -18,9 +24,10 @@ rect_dsc.shadow_ofs_y = 5
label_dsc = lv.draw_label_dsc_t()
label_dsc.init()
label_dsc.color = lv.palette_main(lv.PALETTE.YELLOW)
label_dsc.color = lv.palette_main(lv.PALETTE.ORANGE)
cbuf = bytearray(_CANVAS_WIDTH * _CANVAS_HEIGHT * 4)
# cbuf2 = bytearray(_CANVAS_WIDTH * _CANVAS_HEIGHT * 4)
canvas = lv.canvas(lv.scr_act())
canvas.set_buffer(cbuf, _CANVAS_WIDTH, _CANVAS_HEIGHT, lv.COLOR_FORMAT.NATIVE)
@@ -34,10 +41,14 @@ canvas.draw_text(40, 20, 100, label_dsc, "Some text on text canvas")
# So copy the current image to buffer and rotate it to the canvas
img = lv.img_dsc_t()
img.data = cbuf[:]
# cbuf2 = cbuf[:]
# img.data = cbuf2
img.header.cf = lv.COLOR_FORMAT.NATIVE
img.header.w = _CANVAS_WIDTH
img.header.h = _CANVAS_HEIGHT
canvas.fill_bg(lv.palette_lighten(lv.PALETTE.GREY, 3), lv.OPA.COVER)
canvas.transform(img, 30, LV_ZOOM_NONE, 0, 0, _CANVAS_WIDTH // 2, _CANVAS_HEIGHT // 2, True)
canvas.transform(img, 120, LV_IMG_ZOOM_NONE, 0, 0, _CANVAS_WIDTH // 2, _CANVAS_HEIGHT // 2, True)