1 #include "../../lv_examples.h"
2 #if LV_USE_GRIDNAV && LV_USE_FLEX && LV_BUILD_EXAMPLES
3
4 static const char * opts[] = {"0\n1\n2\n3\n4\n5", "0\n1\n2\n3\n4\n5\n6\n7\n8\n9", "s\nm\nh"};
5 static const int32_t opts_counts[] = {6, 10, 3};
6
7 static lv_obj_t * sliders[3];
8 static lv_obj_t * rollers[3];
9
slider_key_cb(lv_event_t * e)10 static void slider_key_cb(lv_event_t * e)
11 {
12 uint8_t i = (uint32_t)(uintptr_t)lv_event_get_user_data(e);
13 lv_roller_set_selected(rollers[i], lv_slider_get_value(sliders[i]), LV_ANIM_ON);
14 }
roller_key_cb(lv_event_t * e)15 static void roller_key_cb(lv_event_t * e)
16 {
17 uint8_t i = (uint32_t)(uintptr_t)lv_event_get_user_data(e);
18 lv_slider_set_value(sliders[i], lv_roller_get_selected(rollers[i]), LV_ANIM_ON);
19 }
20
21 /**
22 * Grid navigation for only one axis
23 */
lv_example_gridnav_5(void)24 void lv_example_gridnav_5(void)
25 {
26 /*It's assumed that the default group is set and
27 *there is a keyboard indev*/
28
29 lv_group_t * group = lv_group_get_default();
30 lv_obj_t * cont;
31
32 cont = lv_obj_create(lv_screen_active());
33 lv_obj_set_flex_flow(cont, LV_FLEX_FLOW_COLUMN);
34 lv_obj_set_flex_align(cont, LV_FLEX_ALIGN_CENTER, LV_FLEX_ALIGN_CENTER, LV_FLEX_ALIGN_CENTER);
35 lv_obj_set_size(cont, lv_pct(100), lv_pct(50));
36 lv_obj_align(cont, LV_ALIGN_TOP_MID, 0, 0);
37 /* only up/down keys will be used for grid navigation in this container. */
38 /* left/right will be sent to the sliders */
39 lv_gridnav_add(cont, LV_GRIDNAV_CTRL_VERTICAL_MOVE_ONLY);
40 lv_group_add_obj(group, cont);
41 for(uint32_t i = 0; i < 3; i++) {
42 lv_obj_t * slider = lv_slider_create(cont);
43 lv_slider_set_range(slider, 0, opts_counts[i] - 1);
44 lv_group_remove_obj(slider);
45 lv_obj_set_width(slider, lv_pct(85));
46 sliders[i] = slider;
47 lv_obj_add_event_cb(slider, slider_key_cb, LV_EVENT_KEY, (void *)(uintptr_t)i);
48 }
49
50 cont = lv_obj_create(lv_screen_active());
51 lv_obj_set_flex_flow(cont, LV_FLEX_FLOW_ROW);
52 lv_obj_set_flex_align(cont, LV_FLEX_ALIGN_CENTER, LV_FLEX_ALIGN_CENTER, LV_FLEX_ALIGN_CENTER);
53 lv_obj_set_size(cont, lv_pct(100), lv_pct(50));
54 lv_obj_align(cont, LV_ALIGN_BOTTOM_MID, 0, 0);
55 /* only left/right keys will be used for grid navigation in this container. */
56 /* up/down will be sent to the rollers */
57 lv_gridnav_add(cont, LV_GRIDNAV_CTRL_HORIZONTAL_MOVE_ONLY);
58 lv_group_add_obj(group, cont);
59 for(uint32_t i = 0; i < 3; i++) {
60 lv_obj_t * roller = lv_roller_create(cont);
61 lv_roller_set_options(roller, opts[i], LV_ROLLER_MODE_INFINITE);
62 lv_obj_set_size(roller, lv_pct(30), lv_pct(100));
63 lv_group_remove_obj(roller);
64 rollers[i] = roller;
65 lv_obj_add_event_cb(roller, roller_key_cb, LV_EVENT_KEY, (void *)(uintptr_t)i);
66 }
67 }
68
69 #endif
70
