arch(draw): add parallel rendering architecture
BREAKING CHANGE This is a huge update which introduces parallel rendering. lv_conf.h needs to be updated too.
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@@ -31,25 +31,31 @@ static void slider_event_cb(lv_event_t * e)
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if(code == LV_EVENT_REFR_EXT_DRAW_SIZE) {
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lv_event_set_ext_draw_size(e, 50);
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}
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else if(code == LV_EVENT_DRAW_PART_END) {
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lv_obj_draw_part_dsc_t * dsc = lv_event_get_draw_part_dsc(e);
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if(dsc->part == LV_PART_INDICATOR) {
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char buf[16];
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lv_snprintf(buf, sizeof(buf), "%d - %d", (int)lv_slider_get_left_value(obj), (int)lv_slider_get_value(obj));
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else if(code == LV_EVENT_DRAW_MAIN_END) {
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if(!lv_obj_has_state(obj, LV_STATE_PRESSED)) return;
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lv_point_t label_size;
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lv_txt_get_size(&label_size, buf, LV_FONT_DEFAULT, 0, 0, LV_COORD_MAX, 0);
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lv_area_t label_area;
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label_area.x1 = dsc->draw_area->x1 + lv_area_get_width(dsc->draw_area) / 2 - label_size.x / 2;
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label_area.x2 = label_area.x1 + label_size.x;
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label_area.y2 = dsc->draw_area->y1 - 10;
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label_area.y1 = label_area.y2 - label_size.y;
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lv_slider_t * slider = (lv_slider_t *) obj;
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const lv_area_t * indic_area = &slider->bar.indic_area;
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char buf[16];
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lv_snprintf(buf, sizeof(buf), "%d - %d", (int)lv_slider_get_left_value(obj), (int)lv_slider_get_value(obj));
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lv_draw_label_dsc_t label_draw_dsc;
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lv_draw_label_dsc_init(&label_draw_dsc);
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label_draw_dsc.color = lv_color_hex3(0x888);
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lv_draw_label(dsc->draw_ctx, &label_draw_dsc, &label_area, buf, NULL);
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}
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lv_point_t label_size;
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lv_txt_get_size(&label_size, buf, LV_FONT_DEFAULT, 0, 0, LV_COORD_MAX, 0);
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lv_area_t label_area;
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label_area.x1 = 0;
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label_area.x2 = label_size.x - 1;
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label_area.y1 = 0;
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label_area.y2 = label_size.y - 1;
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lv_area_align(indic_area, &label_area, LV_ALIGN_OUT_TOP_MID, 0, -10);
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lv_draw_label_dsc_t label_draw_dsc;
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lv_draw_label_dsc_init(&label_draw_dsc);
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label_draw_dsc.color = lv_color_hex3(0x888);
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label_draw_dsc.text = buf;
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label_draw_dsc.text_local = true;
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lv_layer_t * layer = lv_event_get_layer(e);
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lv_draw_label(layer, &label_draw_dsc, &label_area);
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}
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}
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