Description
I have an object “Content” (as a container). I add a label “Label” to the container. The code is attached.
I use the external keys with which I want to scroll over the label. The “Content” is of fixed width and height.
The “Label” is of variable height. The button Handler function performs the movement of the label (lv_obj_scroll_by(Label, 0, 55, LV_ANIM_OFF); or (lv_obj_scroll_by(Label, 0, -55, LV_ANIM_OFF);
It is necessary to display a scroll if the text does not fit on the visible part of the “Label”.
It is necessary to disable scrolling up if we are at the beginning of the text, and disable scrolling down if we are at the end of the text.
What MCU/Processor/Board and compiler are you using?
ESP32-C3, ESP-IDF v5.0
What LVGL version are you using?
v8.3.10
Content = lv_obj_create(ui_Screen);
lv_obj_set_style_text_font(content, &ui_Myfont, LV_PART_MAIN);
lv_obj_set_size(content, 240, 100);
lv_obj_set_style_bg_color(content, lv_color_hex(0xFFFFFF), LV_PART_MAIN);
lv_obj_set_style_bg_opa(content, LV_OPA_100, LV_PART_MAIN);
Label = lv_label_create(Content);
lv_label_set_text(label, "... LONG TEXT ...");
lv_obj_set_size(labelContent, 240, 100);
lv_obj_set_align(labelContent, LV_ALIGN_BOTTOM_MID);
lv_obj_set_style_text_align(labelContent, LV_TEXT_ALIGN_CENTER, LV_PART_MAIN);
lv_obj_set_scrollbar_mode(labelContent, LV_SCROLLBAR_MODE_AUTO);
lv_obj_set_style_text_line_space(labelContent, 3, LV_PART_MAIN);
lv_obj_set_style_text_color(labelContent, lv_color_hex(0x000000), LV_PART_MAIN);
lv_obj_set_scroll_dir(labelContent, LV_DIR_VER);