f753265a79
BREAKING CHANGE This is a huge update which introduces parallel rendering. lv_conf.h needs to be updated too.
88 lines
2.1 KiB
Python
88 lines
2.1 KiB
Python
_CANVAS_WIDTH = 200
|
|
_CANVAS_HEIGHT = 150
|
|
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 = [
|
|
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()
|
|
rect_dsc.shadow_width = 5
|
|
rect_dsc.shadow_ofs_x = 5
|
|
rect_dsc.shadow_ofs_y = 5
|
|
|
|
label_dsc = lv.draw_label_dsc_t()
|
|
label_dsc.init()
|
|
label_dsc.color = lv.palette_main(lv.PALETTE.ORANGE)
|
|
label_dsc.text = "Some text on text canvas"
|
|
|
|
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)
|
|
canvas.center()
|
|
canvas.fill_bg(lv.palette_lighten(lv.PALETTE.GREY, 3), lv.OPA.COVER)
|
|
|
|
layer = lv.layer_t()
|
|
canvas.init_layer(layer);
|
|
|
|
coords_rect = lv.area_t()
|
|
coords_rect.x1 = 70
|
|
coords_rect.y1 = 60
|
|
coords_rect.x2 = 100
|
|
coords_rect.y2 = 70
|
|
|
|
lv.draw_rect(layer, rect_dsc, coords_rect)
|
|
|
|
coords_text = lv.area_t()
|
|
coords_text.x1 = 40
|
|
coords_text.y1 = 80
|
|
coords_text.x2 = 100
|
|
coords_text.y2 = 120
|
|
|
|
lv.draw_label(layer, label_dsc, coords_text)
|
|
|
|
|
|
|
|
canvas.finish_layer(layer)
|
|
|
|
|
|
# Test the rotation. It requires another buffer where the original image is stored.
|
|
# So copy the current image to buffer and rotate it to the canvas
|
|
|
|
img = lv.img_dsc_t()
|
|
|
|
img.data = cbuf[:]
|
|
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)
|
|
|
|
|
|
img_dsc = lv.draw_img_dsc_t()
|
|
img_dsc.init();
|
|
img_dsc.angle = 120;
|
|
img_dsc.src = img;
|
|
img_dsc.pivot.x = _CANVAS_WIDTH // 2;
|
|
img_dsc.pivot.y = _CANVAS_HEIGHT // 2;
|
|
|
|
coords_img = lv.area_t()
|
|
coords_img.x1 = 0
|
|
coords_img.y1 = 0
|
|
coords_img.x2 = _CANVAS_WIDTH - 1
|
|
coords_img.y2 = _CANVAS_HEIGHT - 1
|
|
|
|
lv.draw_img(layer, img_dsc, coords_img)
|
|
|