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83 lines
2.8 KiB
C++
83 lines
2.8 KiB
C++
// SPDX-License-Identifier: Apache-2.0
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#define LV_USE_PRIVATE_API 1 // For the lv_obj_class_t declaration
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#include <lvgl/widgets/step_indicator.h>
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static void step_indicator_constructor(const lv_obj_class_t* class_p, lv_obj_t* obj) {
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LV_UNUSED(class_p);
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lv_obj_set_clickable(obj, false);
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lv_obj_set_scrollable(obj, false);
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lv_obj_set_flex_flow(obj, LV_FLEX_FLOW_ROW);
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lv_obj_set_flex_align(obj, LV_FLEX_ALIGN_START, LV_FLEX_ALIGN_CENTER, LV_FLEX_ALIGN_CENTER);
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}
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static void step_indicator_segment_constructor(const lv_obj_class_t* class_p, lv_obj_t* obj) {
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LV_UNUSED(class_p);
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lv_obj_set_clickable(obj, false);
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lv_obj_set_scrollable(obj, false);
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// The segments share the indicator's width
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lv_obj_set_flex_grow(obj, 1);
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}
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// Not static: the theme styles step indicators and their segments by these classes
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extern "C" const lv_obj_class_t lvgl_step_indicator_class = {
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.base_class = &lv_obj_class,
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.constructor_cb = step_indicator_constructor,
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.destructor_cb = nullptr,
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.event_cb = nullptr,
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.user_data = nullptr,
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.name = "step_indicator",
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.width_def = LV_PCT(100),
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.height_def = LV_SIZE_CONTENT,
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.editable = LV_OBJ_CLASS_EDITABLE_INHERIT,
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.group_def = LV_OBJ_CLASS_GROUP_DEF_FALSE,
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.instance_size = 0,
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.theme_inheritable = LV_OBJ_CLASS_THEME_INHERITABLE_FALSE
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};
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extern "C" const lv_obj_class_t lvgl_step_indicator_segment_class = {
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.base_class = &lv_obj_class,
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.constructor_cb = step_indicator_segment_constructor,
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.destructor_cb = nullptr,
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.event_cb = nullptr,
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.user_data = nullptr,
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.name = "step_indicator_segment",
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.width_def = 0,
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.height_def = 0,
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.editable = LV_OBJ_CLASS_EDITABLE_INHERIT,
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.group_def = LV_OBJ_CLASS_GROUP_DEF_FALSE,
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.instance_size = 0,
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.theme_inheritable = LV_OBJ_CLASS_THEME_INHERITABLE_FALSE
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};
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extern "C" {
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lv_obj_t* lvgl_step_indicator_create(lv_obj_t* parent) {
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lv_obj_t* obj = lv_obj_class_create_obj(&lvgl_step_indicator_class, parent);
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lv_obj_class_init_obj(obj);
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return obj;
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}
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void lvgl_step_indicator_set_step_count(lv_obj_t* obj, uint32_t count) {
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uint32_t current = lv_obj_get_child_count(obj);
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while (current > count) {
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lv_obj_delete(lv_obj_get_child(obj, -1));
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current--;
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}
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while (current < count) {
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lv_obj_t* segment = lv_obj_class_create_obj(&lvgl_step_indicator_segment_class, obj);
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lv_obj_class_init_obj(segment);
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current++;
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}
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}
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void lvgl_step_indicator_set_finished_count(lv_obj_t* obj, uint32_t finished_count) {
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const uint32_t count = lv_obj_get_child_count(obj);
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for (uint32_t i = 0; i < count; i++) {
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// The theme shows finished steps by the checked state
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lv_obj_set_state(lv_obj_get_child(obj, static_cast<int32_t>(i)), LV_STATE_CHECKED, i < finished_count);
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}
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}
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}
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