1 /**
2 * @file lv_calendar_header_arrow.c
3 *
4 */
5
6 /*********************
7 * INCLUDES
8 *********************/
9 #include "../../core/lv_obj_class_private.h"
10 #include "lv_calendar_header_arrow.h"
11 #if LV_USE_CALENDAR && LV_USE_CALENDAR_HEADER_ARROW
12
13 #include "lv_calendar.h"
14 #include "../button/lv_button.h"
15 #include "../label/lv_label.h"
16 #include "../../layouts/flex/lv_flex.h"
17 #include "../../misc/lv_assert.h"
18
19 /*********************
20 * DEFINES
21 *********************/
22
23 /**********************
24 * TYPEDEFS
25 **********************/
26
27 /**********************
28 * STATIC PROTOTYPES
29 **********************/
30 static void my_constructor(const lv_obj_class_t * class_p, lv_obj_t * obj);
31 static void month_event_cb(lv_event_t * e);
32 static void value_changed_event_cb(lv_event_t * e);
33
34 /**********************
35 * STATIC VARIABLES
36 **********************/
37
38 const lv_obj_class_t lv_calendar_header_arrow_class = {
39 .base_class = &lv_obj_class,
40 .constructor_cb = my_constructor,
41 .width_def = LV_PCT(100),
42 .height_def = LV_DPI_DEF / 3,
43 .name = "calendar-header-arrow",
44 };
45
46 static const char * month_names_def[12] = LV_CALENDAR_DEFAULT_MONTH_NAMES;
47
48 /**********************
49 * MACROS
50 **********************/
51
52 /**********************
53 * GLOBAL FUNCTIONS
54 **********************/
55
lv_calendar_header_arrow_create(lv_obj_t * parent)56 lv_obj_t * lv_calendar_header_arrow_create(lv_obj_t * parent)
57 {
58 lv_obj_t * obj = lv_obj_class_create_obj(&lv_calendar_header_arrow_class, parent);
59 lv_obj_class_init_obj(obj);
60 return obj;
61 }
62
63 /**********************
64 * STATIC FUNCTIONS
65 **********************/
66
my_constructor(const lv_obj_class_t * class_p,lv_obj_t * obj)67 static void my_constructor(const lv_obj_class_t * class_p, lv_obj_t * obj)
68 {
69 LV_TRACE_OBJ_CREATE("begin");
70
71 LV_UNUSED(class_p);
72
73 lv_obj_move_to_index(obj, 0);
74
75 lv_obj_set_flex_flow(obj, LV_FLEX_FLOW_ROW);
76 lv_obj_set_flex_align(obj, LV_FLEX_ALIGN_START, LV_FLEX_ALIGN_CENTER, LV_FLEX_ALIGN_START);
77
78 lv_obj_t * mo_prev = lv_button_create(obj);
79 lv_obj_set_style_bg_image_src(mo_prev, LV_SYMBOL_LEFT, 0);
80 lv_obj_set_height(mo_prev, lv_pct(100));
81 lv_obj_update_layout(mo_prev);
82 int32_t btn_size = lv_obj_get_height(mo_prev);
83 lv_obj_set_width(mo_prev, btn_size);
84
85 lv_obj_add_event_cb(mo_prev, month_event_cb, LV_EVENT_CLICKED, NULL);
86 lv_obj_remove_flag(mo_prev, LV_OBJ_FLAG_CLICK_FOCUSABLE);
87
88 lv_obj_t * label = lv_label_create(obj);
89 lv_label_set_long_mode(label, LV_LABEL_LONG_MODE_SCROLL_CIRCULAR);
90 lv_obj_set_style_text_align(label, LV_TEXT_ALIGN_CENTER, 0);
91 lv_obj_set_flex_grow(label, 1);
92
93 lv_obj_t * mo_next = lv_button_create(obj);
94 lv_obj_set_style_bg_image_src(mo_next, LV_SYMBOL_RIGHT, 0);
95 lv_obj_set_size(mo_next, btn_size, btn_size);
96
97 lv_obj_add_event_cb(mo_next, month_event_cb, LV_EVENT_CLICKED, NULL);
98 lv_obj_remove_flag(mo_next, LV_OBJ_FLAG_CLICK_FOCUSABLE);
99
100 lv_obj_add_event_cb(obj, value_changed_event_cb, LV_EVENT_VALUE_CHANGED, NULL);
101 /*Refresh the drop downs*/
102 lv_obj_send_event(obj, LV_EVENT_VALUE_CHANGED, NULL);
103 }
104
month_event_cb(lv_event_t * e)105 static void month_event_cb(lv_event_t * e)
106 {
107 lv_obj_t * btn = lv_event_get_current_target(e);
108
109 lv_obj_t * header = lv_obj_get_parent(btn);
110 lv_obj_t * calendar = lv_obj_get_parent(header);
111
112 const lv_calendar_date_t * d;
113 d = lv_calendar_get_showed_date(calendar);
114 lv_calendar_date_t newd = *d;
115
116 LV_ASSERT_FORMAT_MSG(newd.year >= 0 && newd.month >= 1 && newd.month <= 12,
117 "Invalid date: %d-%d", newd.year, newd.month);
118
119 /*The last child is the right button*/
120 if(lv_obj_get_child(header, 0) == btn) {
121 if(newd.month == 1) {
122 newd.month = 12;
123 newd.year --;
124 }
125 else {
126 newd.month --;
127 }
128 }
129 else {
130 if(newd.month == 12) {
131 newd.month = 1;
132 newd.year ++;
133 }
134 else {
135 newd.month ++;
136 }
137 }
138
139 lv_calendar_set_month_shown(calendar, newd.year, newd.month);
140
141 lv_obj_t * label = lv_obj_get_child(header, 1);
142 lv_label_set_text_fmt(label, "%d %s", newd.year, month_names_def[newd.month - 1]);
143 }
144
value_changed_event_cb(lv_event_t * e)145 static void value_changed_event_cb(lv_event_t * e)
146 {
147 lv_obj_t * header = lv_event_get_current_target(e);
148 lv_obj_t * calendar = lv_obj_get_parent(header);
149
150 const lv_calendar_date_t * date = lv_calendar_get_showed_date(calendar);
151 LV_ASSERT_FORMAT_MSG(date->year >= 0 && date->month >= 1 && date->month <= 12,
152 "Invalid date: %d-%d", date->year, date->month);
153
154 lv_obj_t * label = lv_obj_get_child(header, 1);
155 lv_label_set_text_fmt(label, "%d %s", date->year, month_names_def[date->month - 1]);
156 }
157
158 #endif /*LV_USE_CALENDAR_HEADER_ARROW*/
159
