88 lines
2.1 KiB
Python
88 lines
2.1 KiB
Python
_CANVAS_WIDTH = 200
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_CANVAS_HEIGHT = 150
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LV_IMAGE_ZOOM_NONE = 256
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rect_dsc = lv.draw_rect_dsc_t()
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rect_dsc.init()
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rect_dsc.radius = 10
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rect_dsc.bg_opa = lv.OPA.COVER
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rect_dsc.bg_grad.dir = lv.GRAD_DIR.HOR
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rect_dsc.bg_grad.stops = [
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lv.gradient_stop_t({'color': lv.palette_main(lv.PALETTE.RED)}),
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lv.gradient_stop_t({'color': lv.palette_main(lv.PALETTE.BLUE), 'frac':0xff})
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]
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rect_dsc.border_width = 2
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rect_dsc.border_opa = lv.OPA._90
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rect_dsc.border_color = lv.color_white()
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rect_dsc.shadow_width = 5
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rect_dsc.shadow_ofs_x = 5
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rect_dsc.shadow_ofs_y = 5
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label_dsc = lv.draw_label_dsc_t()
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label_dsc.init()
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label_dsc.color = lv.palette_main(lv.PALETTE.ORANGE)
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label_dsc.text = "Some text on text canvas"
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cbuf = bytearray(_CANVAS_WIDTH * _CANVAS_HEIGHT * 4)
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# cbuf2 = bytearray(_CANVAS_WIDTH * _CANVAS_HEIGHT * 4)
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canvas = lv.canvas(lv.scr_act())
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canvas.set_buffer(cbuf, _CANVAS_WIDTH, _CANVAS_HEIGHT, lv.COLOR_FORMAT.NATIVE)
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canvas.center()
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canvas.fill_bg(lv.palette_lighten(lv.PALETTE.GREY, 3), lv.OPA.COVER)
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layer = lv.layer_t()
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canvas.init_layer(layer);
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coords_rect = lv.area_t()
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coords_rect.x1 = 70
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coords_rect.y1 = 60
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coords_rect.x2 = 100
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coords_rect.y2 = 70
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lv.draw_rect(layer, rect_dsc, coords_rect)
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coords_text = lv.area_t()
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coords_text.x1 = 40
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coords_text.y1 = 80
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coords_text.x2 = 100
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coords_text.y2 = 120
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lv.draw_label(layer, label_dsc, coords_text)
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canvas.finish_layer(layer)
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# Test the rotation. It requires another buffer where the original image is stored.
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# So copy the current image to buffer and rotate it to the canvas
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image = lv.image_dsc_t()
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image.data = cbuf[:]
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image.header.cf = lv.COLOR_FORMAT.NATIVE
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image.header.w = _CANVAS_WIDTH
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image.header.h = _CANVAS_HEIGHT
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canvas.fill_bg(lv.palette_lighten(lv.PALETTE.GREY, 3), lv.OPA.COVER)
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image_dsc = lv.draw_image_dsc_t()
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image_dsc.init();
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image_dsc.angle = 120;
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image_dsc.src = image;
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image_dsc.pivot.x = _CANVAS_WIDTH // 2;
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image_dsc.pivot.y = _CANVAS_HEIGHT // 2;
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coords_image = lv.area_t()
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coords_image.x1 = 0
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coords_image.y1 = 0
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coords_image.x2 = _CANVAS_WIDTH - 1
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coords_image.y2 = _CANVAS_HEIGHT - 1
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lv.draw_image(layer, image_dsc, coords_image)
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