Tile View (lv_tileview)

Overview

The Tile View is a container Widget whose elements (called tiles) can be arranged in grid form. A user can navigate between the tiles by swiping. Any direction of swiping can be disabled on the tiles individually to not allow moving from one tile to another.

If the Tile View is screen sized, the user interface resembles what you may have seen on smartwatches.

Parts and Styles

The Tile View is built from a Base Widget container and Base Widget tiles.

The parts and styles work the same as for Base Widget.

Usage

Add a tile

lv_tileview_add_tile(tileview, col_id, row_id, dir) creates a new tile on the col_id-th column and row_id-th row. dir can be LV_DIR_LEFT/RIGHT/TOP/BOTTOM/HOR/VER/ALL or OR-ed values to enable moving to the adjacent tiles in the given direction by swiping.

The returned value is a pointer to the tile (a Base Widget) on which the content of the tab can be created.

Change tile

The Tile View can scroll to a specified tile with lv_tileview_set_tile(tileview, tile, LV_ANIM_ON / OFF) or lv_tileview_set_tile_by_index(tileview, col_id, row_id, LV_ANIM_ON / OFF).

Events

LV_EVENT_VALUE_CHANGED Sent after a new tile is displayed by scrolling. lv_tileview_get_tile_active(tabview) can be used within the event to get a pointer to the newly-displayed tile.

Keys

No Keys are processed by Tileview Widgets.

Example

Tileview with content

#include "../../lv_examples.h"
#if LV_USE_TILEVIEW && LV_BUILD_EXAMPLES

/**
 * Create a 2x2 tile view and allow scrolling only in an "L" shape.
 * Demonstrate scroll chaining with a long list that
 * scrolls the tile view when it can't be scrolled further.
 */
void lv_example_tileview_1(void)
{
    lv_obj_t * tv = lv_tileview_create(lv_screen_active());

    /*Tile1: just a label*/
    lv_obj_t * tile1 = lv_tileview_add_tile(tv, 0, 0, LV_DIR_BOTTOM);
    lv_obj_t * label = lv_label_create(tile1);
    lv_label_set_text(label, "Scroll down");
    lv_obj_center(label);

    /*Tile2: a button*/
    lv_obj_t * tile2 = lv_tileview_add_tile(tv, 0, 1, LV_DIR_TOP | LV_DIR_RIGHT);

    lv_obj_t * btn = lv_button_create(tile2);

    label = lv_label_create(btn);
    lv_label_set_text(label, "Scroll up or right");

    lv_obj_set_size(btn, LV_SIZE_CONTENT, LV_SIZE_CONTENT);
    lv_obj_center(btn);

    /*Tile3: a list*/
    lv_obj_t * tile3 = lv_tileview_add_tile(tv, 1, 1, LV_DIR_LEFT);
    lv_obj_t * list = lv_list_create(tile3);
    lv_obj_set_size(list, LV_PCT(100), LV_PCT(100));

    lv_list_add_button(list, NULL, "One");
    lv_list_add_button(list, NULL, "Two");
    lv_list_add_button(list, NULL, "Three");
    lv_list_add_button(list, NULL, "Four");
    lv_list_add_button(list, NULL, "Five");
    lv_list_add_button(list, NULL, "Six");
    lv_list_add_button(list, NULL, "Seven");
    lv_list_add_button(list, NULL, "Eight");
    lv_list_add_button(list, NULL, "Nine");
    lv_list_add_button(list, NULL, "Ten");

}

#endif

API

lv_api_map_v8.h

lv_types.h

lv_tileview.h