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61 lines
1.7 KiB
C
61 lines
1.7 KiB
C
2 years ago
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/**
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* @file lv_example_fragment_1.c
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* @brief Basic usage of obj fragment
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*/
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#include "../../lv_examples.h"
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#if LV_USE_FRAGMENT && LV_BUILD_EXAMPLES
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static void sample_fragment_ctor(lv_fragment_t * self, void * args);
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static lv_obj_t * sample_fragment_create_obj(lv_fragment_t * self, lv_obj_t * parent);
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static void sample_container_del(lv_event_t * e);
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static lv_obj_t * root = NULL;
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struct sample_fragment_t {
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lv_fragment_t base;
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const char * name;
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};
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static const lv_fragment_class_t sample_cls = {
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.constructor_cb = sample_fragment_ctor,
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.create_obj_cb = sample_fragment_create_obj,
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.instance_size = sizeof(struct sample_fragment_t)
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};
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void lv_example_fragment_1(void)
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{
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root = lv_obj_create(lv_scr_act());
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lv_obj_set_size(root, LV_PCT(100), LV_PCT(100));
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lv_fragment_manager_t * manager = lv_fragment_manager_create(NULL);
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/* Clean up the fragment manager before objects in containers got deleted */
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lv_obj_add_event_cb(root, sample_container_del, LV_EVENT_DELETE, manager);
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lv_fragment_t * fragment = lv_fragment_create(&sample_cls, "Fragment");
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lv_fragment_manager_replace(manager, fragment, &root);
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}
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static void sample_fragment_ctor(lv_fragment_t * self, void * args)
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{
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((struct sample_fragment_t *) self)->name = args;
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}
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static lv_obj_t * sample_fragment_create_obj(lv_fragment_t * self, lv_obj_t * parent)
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{
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lv_obj_t * label = lv_label_create(parent);
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lv_obj_set_style_bg_opa(label, LV_OPA_COVER, 0);;
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lv_label_set_text_fmt(label, "Hello, %s!", ((struct sample_fragment_t *) self)->name);
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return label;
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}
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static void sample_container_del(lv_event_t * e)
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{
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lv_fragment_manager_t * manager = (lv_fragment_manager_t *) lv_event_get_user_data(e);
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lv_fragment_manager_del(manager);
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}
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#endif
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