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feat(dropdown): lv_dropdown_set/get_selected_highlight + minor fixes

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This commit is contained in:
Gabor Kiss-Vamosi
2021-02-27 20:34:08 +01:00
parent b1677205b0
commit 347680a3c0
9 changed files with 120 additions and 80 deletions
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4
examples/widgets/dropdown/lv_example_dropdown_1.c
View File

@@ -4,9 +4,11 @@
static void event_handler(lv_obj_t * obj, lv_event_t event)
{
if(event == LV_EVENT_VALUE_CHANGED) {
#if LV_USE_LOG /*To avoid warnings if LV_LOG_USER is empty*/
char buf[32];
lv_dropdown_get_selected_str(obj, buf, sizeof(buf));
LV_LOG_USER("Option: %s\n", buf);
LV_LOG_USER("Option: %s", buf);
#endif
}
}

40
examples/widgets/dropdown/lv_example_dropdown_3.c
View File

@@ -1,32 +1,42 @@
#include "../../../lvgl.h"
#if LV_USE_DROPDOWN && LV_BUILD_EXAMPLES
static void event_cb(lv_obj_t * dropdown, lv_event_t e)
{
if(e == LV_EVENT_VALUE_CHANGED) {
char buf[64];
lv_dropdown_get_selected_str(dropdown, buf, sizeof(buf));
LV_LOG_USER("'%s' is selected", buf);
}
}
/**
* Create a menu from a drop-down list and show some drop-down list features and styling
*/
void lv_example_dropdown_3(void)
{
/*Create a drop down list*/
lv_obj_t * dd = lv_dropdown_create(lv_scr_act(), NULL);
lv_obj_align(dd, NULL, LV_ALIGN_IN_TOP_RIGHT, -10, 10);
lv_dropdown_set_options(dd, "New\n"
"Open\n"
"Edit\n"
"Close\n"
"Preferences\n"
"Exit");
lv_obj_t * dropdown = lv_dropdown_create(lv_scr_act(), NULL);
lv_obj_align(dropdown, NULL, LV_ALIGN_IN_TOP_LEFT, 10, 10);
lv_dropdown_set_options(dropdown, "New project\n"
"New file\n"
"Open project\n"
"Recent projects\n"
"Preferences\n"
"Exit");
/*Set a fixed text to display on the button of the drop-down list*/
lv_dropdown_set_text(dd, "Menu");
lv_dropdown_set_text(dropdown, "Menu");
/*Use a custom image as down icon*/
/*Use a custom image as down icon and flip it when the list is opened*/
LV_IMG_DECLARE(img_caret_down)
lv_dropdown_set_symbol(dd, &img_caret_down);
lv_dropdown_set_symbol(dropdown, &img_caret_down);
lv_obj_set_style_transform_angle(dropdown, LV_PART_MAIN, LV_STATE_CHECKED, 1800);
/* Remove the style of the selected part on the list.
* In a menu we don't need to show the last clicked item*/
lv_obj_t * list = lv_dropdown_get_list(dd);
lv_obj_remove_style(list, LV_PART_SELECTED, LV_STATE_DEFAULT, NULL);
/* In a menu we don't need to show the last clicked item*/
lv_dropdown_set_selected_highlight(dropdown, false);
lv_obj_add_event_cb(dropdown, event_cb, NULL);
}
#endif