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feat(draw): add gradient dithering support (#2872)

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* Add dithering to gradients

* Add support for 8x8 matrix for ordered dithering

* Fix CI errors

* Try error diffusion on vertical gradient too

* Vertical error diffusion dithering

* Add support for runtime based dithering mode selection (from none, ordered, error diffusion).

* Reduce the binary size of the code by sharing the dithering table when appropriate.

* Fix CI

* Fix CI

* Review corrections

* Fix union mapping

* Revert bg_color changes

* Fix for keeping bg_color in the API.

* Fix after review

* Add support for setting multiple stops per gradient in the style API

* Let's make an example

Co-authored-by: Gabor Kiss-Vamosi <kisvegabor@gmail.com>
This commit is contained in:
X-Ryl669
2022-01-11 12:38:30 +01:00
committed by GitHub
parent 89389d3c96
commit 6617385f8a
25 changed files with 980 additions and 82 deletions
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2
src/extra/widgets/chart/lv_chart.c
View File

@@ -1202,7 +1202,7 @@ static void draw_series_bar(lv_obj_t * obj, lv_draw_ctx_t * draw_ctx)
lv_draw_rect_dsc_t col_dsc;
lv_draw_rect_dsc_init(&col_dsc);
lv_obj_init_draw_rect_dsc(obj, LV_PART_ITEMS, &col_dsc);
col_dsc.bg_grad_dir = LV_GRAD_DIR_NONE;
col_dsc.bg_grad.dir = LV_GRAD_DIR_NONE;
col_dsc.bg_opa = LV_OPA_COVER;
/*Make the cols longer with `radius` to clip the rounding from the bottom*/

10
src/extra/widgets/led/lv_led.c
View File

@@ -178,15 +178,17 @@ static void lv_led_event(const lv_obj_class_t * class_p, lv_event_t * e)
lv_obj_init_draw_rect_dsc(obj, LV_PART_MAIN, &rect_dsc);
/*Use the original colors brightness to modify color->led*/
rect_dsc.bg_color = lv_color_mix(led->color, lv_color_black(), lv_color_brightness(rect_dsc.bg_color));
rect_dsc.bg_grad_color = lv_color_mix(led->color, lv_color_black(), lv_color_brightness(rect_dsc.bg_grad_color));
rect_dsc.bg_grad.stops[0].color = lv_color_mix(led->color, lv_color_black(),
lv_color_brightness(rect_dsc.bg_grad.stops[0].color));
rect_dsc.bg_grad.stops[1].color = lv_color_mix(led->color, lv_color_black(),
lv_color_brightness(rect_dsc.bg_grad.stops[1].color));
rect_dsc.shadow_color = lv_color_mix(led->color, lv_color_black(), lv_color_brightness(rect_dsc.shadow_color));
rect_dsc.border_color = lv_color_mix(led->color, lv_color_black(), lv_color_brightness(rect_dsc.border_color));
rect_dsc.outline_color = lv_color_mix(led->color, lv_color_black(), lv_color_brightness(rect_dsc.outline_color));
/*Mix. the color with black proportionally with brightness*/
rect_dsc.bg_color = lv_color_mix(rect_dsc.bg_color, lv_color_black(), led->bright);
rect_dsc.bg_grad_color = lv_color_mix(rect_dsc.bg_grad_color, lv_color_black(), led->bright);
rect_dsc.bg_grad.stops[0].color = lv_color_mix(rect_dsc.bg_grad.stops[0].color, lv_color_black(), led->bright);
rect_dsc.bg_grad.stops[1].color = lv_color_mix(rect_dsc.bg_grad.stops[1].color, lv_color_black(), led->bright);
rect_dsc.border_color = lv_color_mix(rect_dsc.border_color, lv_color_black(), led->bright);
rect_dsc.shadow_color = lv_color_mix(rect_dsc.shadow_color, lv_color_black(), led->bright);
rect_dsc.outline_color = lv_color_mix(rect_dsc.outline_color, lv_color_black(), led->bright);