1 /**
2 * @file lv_cb.c
3 *
4 */
5
6 /*********************
7 * INCLUDES
8 *********************/
9 #include "lv_checkbox.h"
10 #if LV_USE_CHECKBOX != 0
11
12 #include "../misc/lv_assert.h"
13 #include "../misc/lv_txt_ap.h"
14 #include "../core/lv_group.h"
15 #include "../draw/lv_draw.h"
16
17 /*********************
18 * DEFINES
19 *********************/
20 #define MY_CLASS &lv_checkbox_class
21
22 /**********************
23 * TYPEDEFS
24 **********************/
25
26 /**********************
27 * STATIC PROTOTYPES
28 **********************/
29 static void lv_checkbox_constructor(const lv_obj_class_t * class_p, lv_obj_t * obj);
30 static void lv_checkbox_destructor(const lv_obj_class_t * class_p, lv_obj_t * obj);
31 static void lv_checkbox_event(const lv_obj_class_t * class_p, lv_event_t * e);
32 static void lv_checkbox_draw(lv_event_t * e);
33
34 /**********************
35 * STATIC VARIABLES
36 **********************/
37 const lv_obj_class_t lv_checkbox_class = {
38 .constructor_cb = lv_checkbox_constructor,
39 .destructor_cb = lv_checkbox_destructor,
40 .event_cb = lv_checkbox_event,
41 .width_def = LV_SIZE_CONTENT,
42 .height_def = LV_SIZE_CONTENT,
43 .group_def = LV_OBJ_CLASS_GROUP_DEF_TRUE,
44 .instance_size = sizeof(lv_checkbox_t),
45 .base_class = &lv_obj_class
46 };
47
48 /**********************
49 * MACROS
50 **********************/
51
52 /**********************
53 * GLOBAL FUNCTIONS
54 **********************/
55
lv_checkbox_create(lv_obj_t * parent)56 lv_obj_t * lv_checkbox_create(lv_obj_t * parent)
57 {
58 LV_LOG_INFO("begin");
59 lv_obj_t * obj = lv_obj_class_create_obj(MY_CLASS, parent);
60 lv_obj_class_init_obj(obj);
61 return obj;
62 }
63
64 /*=====================
65 * Setter functions
66 *====================*/
67
lv_checkbox_set_text(lv_obj_t * obj,const char * txt)68 void lv_checkbox_set_text(lv_obj_t * obj, const char * txt)
69 {
70 lv_checkbox_t * cb = (lv_checkbox_t *)obj;
71 #if LV_USE_ARABIC_PERSIAN_CHARS
72 size_t len = _lv_txt_ap_calc_bytes_cnt(txt);
73 #else
74 size_t len = strlen(txt);
75 #endif
76
77 char * _txt = (char *)cb->txt;
78 if(!cb->static_txt) _txt = lv_mem_realloc(_txt, len + 1);
79 else _txt = lv_mem_alloc(len + 1);
80 #if LV_USE_ARABIC_PERSIAN_CHARS
81 _lv_txt_ap_proc(txt, _txt);
82 #else
83 strcpy(_txt, txt);
84 #endif
85
86 cb->txt = _txt;
87 cb->static_txt = 0;
88
89 lv_obj_refresh_self_size(obj);
90 lv_obj_invalidate(obj);
91 }
92
lv_checkbox_set_text_static(lv_obj_t * obj,const char * txt)93 void lv_checkbox_set_text_static(lv_obj_t * obj, const char * txt)
94 {
95 lv_checkbox_t * cb = (lv_checkbox_t *)obj;
96
97 if(!cb->static_txt) lv_mem_free((void *)cb->txt);
98
99 cb->txt = (char *)txt;
100 cb->static_txt = 1;
101
102 lv_obj_refresh_self_size(obj);
103 lv_obj_invalidate(obj);
104 }
105
106 /*=====================
107 * Getter functions
108 *====================*/
109
lv_checkbox_get_text(const lv_obj_t * obj)110 const char * lv_checkbox_get_text(const lv_obj_t * obj)
111 {
112 lv_checkbox_t * cb = (lv_checkbox_t *)obj;
113 return cb->txt;
114 }
115
116 /**********************
117 * STATIC FUNCTIONS
118 **********************/
119
lv_checkbox_constructor(const lv_obj_class_t * class_p,lv_obj_t * obj)120 static void lv_checkbox_constructor(const lv_obj_class_t * class_p, lv_obj_t * obj)
121 {
122 LV_UNUSED(class_p);
123 LV_TRACE_OBJ_CREATE("begin");
124
125 lv_checkbox_t * cb = (lv_checkbox_t *)obj;
126
127 cb->txt = "Check box";
128 cb->static_txt = 1;
129 lv_obj_add_flag(obj, LV_OBJ_FLAG_CLICKABLE);
130 lv_obj_add_flag(obj, LV_OBJ_FLAG_CHECKABLE);
131 lv_obj_add_flag(obj, LV_OBJ_FLAG_SCROLL_ON_FOCUS);
132
133 LV_TRACE_OBJ_CREATE("finished");
134 }
135
lv_checkbox_destructor(const lv_obj_class_t * class_p,lv_obj_t * obj)136 static void lv_checkbox_destructor(const lv_obj_class_t * class_p, lv_obj_t * obj)
137 {
138 LV_UNUSED(class_p);
139 LV_TRACE_OBJ_CREATE("begin");
140
141 lv_checkbox_t * cb = (lv_checkbox_t *)obj;
142 if(!cb->static_txt) {
143 lv_mem_free((void *)cb->txt);
144 cb->txt = NULL;
145 }
146 LV_TRACE_OBJ_CREATE("finished");
147 }
148
lv_checkbox_event(const lv_obj_class_t * class_p,lv_event_t * e)149 static void lv_checkbox_event(const lv_obj_class_t * class_p, lv_event_t * e)
150 {
151 LV_UNUSED(class_p);
152
153 lv_res_t res;
154 /*Call the ancestor's event handler*/
155 res = lv_obj_event_base(MY_CLASS, e);
156 if(res != LV_RES_OK) return;
157
158 lv_event_code_t code = lv_event_get_code(e);
159 lv_obj_t * obj = lv_event_get_target(e);
160
161 if(code == LV_EVENT_GET_SELF_SIZE) {
162 lv_point_t * p = lv_event_get_param(e);
163 lv_checkbox_t * cb = (lv_checkbox_t *)obj;
164
165 const lv_font_t * font = lv_obj_get_style_text_font(obj, LV_PART_MAIN);
166 lv_coord_t font_h = lv_font_get_line_height(font);
167 lv_coord_t line_space = lv_obj_get_style_text_line_space(obj, LV_PART_MAIN);
168 lv_coord_t letter_space = lv_obj_get_style_text_letter_space(obj, LV_PART_MAIN);
169
170 lv_point_t txt_size;
171 lv_txt_get_size(&txt_size, cb->txt, font, letter_space, line_space, LV_COORD_MAX, LV_TEXT_FLAG_NONE);
172
173 lv_coord_t bg_colp = lv_obj_get_style_pad_column(obj, LV_PART_MAIN);
174 lv_coord_t marker_leftp = lv_obj_get_style_pad_left(obj, LV_PART_INDICATOR);
175 lv_coord_t marker_rightp = lv_obj_get_style_pad_right(obj, LV_PART_INDICATOR);
176 lv_coord_t marker_topp = lv_obj_get_style_pad_top(obj, LV_PART_INDICATOR);
177 lv_coord_t marker_bottomp = lv_obj_get_style_pad_bottom(obj, LV_PART_INDICATOR);
178 lv_point_t marker_size;
179 marker_size.x = font_h + marker_leftp + marker_rightp;
180 marker_size.y = font_h + marker_topp + marker_bottomp;
181
182 p->x = marker_size.x + txt_size.x + bg_colp;
183 p->y = LV_MAX(marker_size.y, txt_size.y);
184 }
185 else if(code == LV_EVENT_REFR_EXT_DRAW_SIZE) {
186 lv_coord_t * s = lv_event_get_param(e);
187 lv_coord_t m = lv_obj_calculate_ext_draw_size(obj, LV_PART_INDICATOR);
188 *s = LV_MAX(*s, m);
189 }
190 else if(code == LV_EVENT_DRAW_MAIN) {
191 lv_checkbox_draw(e);
192 }
193 }
194
lv_checkbox_draw(lv_event_t * e)195 static void lv_checkbox_draw(lv_event_t * e)
196 {
197 lv_obj_t * obj = lv_event_get_target(e);
198 lv_checkbox_t * cb = (lv_checkbox_t *)obj;
199
200 lv_draw_ctx_t * draw_ctx = lv_event_get_draw_ctx(e);
201 const lv_font_t * font = lv_obj_get_style_text_font(obj, LV_PART_MAIN);
202 lv_coord_t font_h = lv_font_get_line_height(font);
203
204 lv_coord_t bg_border = lv_obj_get_style_border_width(obj, LV_PART_MAIN);
205 lv_coord_t bg_topp = lv_obj_get_style_pad_top(obj, LV_PART_MAIN) + bg_border;
206 lv_coord_t bg_leftp = lv_obj_get_style_pad_left(obj, LV_PART_MAIN) + bg_border;
207 lv_coord_t bg_colp = lv_obj_get_style_pad_column(obj, LV_PART_MAIN);
208
209 lv_coord_t marker_leftp = lv_obj_get_style_pad_left(obj, LV_PART_INDICATOR);
210 lv_coord_t marker_rightp = lv_obj_get_style_pad_right(obj, LV_PART_INDICATOR);
211 lv_coord_t marker_topp = lv_obj_get_style_pad_top(obj, LV_PART_INDICATOR);
212 lv_coord_t marker_bottomp = lv_obj_get_style_pad_bottom(obj, LV_PART_INDICATOR);
213
214 lv_coord_t transf_w = lv_obj_get_style_transform_width(obj, LV_PART_INDICATOR);
215 lv_coord_t transf_h = lv_obj_get_style_transform_height(obj, LV_PART_INDICATOR);
216
217 lv_draw_rect_dsc_t indic_dsc;
218 lv_draw_rect_dsc_init(&indic_dsc);
219 lv_obj_init_draw_rect_dsc(obj, LV_PART_INDICATOR, &indic_dsc);
220 lv_area_t marker_area;
221 marker_area.x1 = obj->coords.x1 + bg_leftp;
222 marker_area.x2 = marker_area.x1 + font_h + marker_leftp + marker_rightp - 1;
223 marker_area.y1 = obj->coords.y1 + bg_topp;
224 marker_area.y2 = marker_area.y1 + font_h + marker_topp + marker_bottomp - 1;
225
226 lv_area_t marker_area_transf;
227 lv_area_copy(&marker_area_transf, &marker_area);
228 marker_area_transf.x1 -= transf_w;
229 marker_area_transf.x2 += transf_w;
230 marker_area_transf.y1 -= transf_h;
231 marker_area_transf.y2 += transf_h;
232
233 lv_obj_draw_part_dsc_t part_draw_dsc;
234 lv_obj_draw_dsc_init(&part_draw_dsc, draw_ctx);
235 part_draw_dsc.rect_dsc = &indic_dsc;
236 part_draw_dsc.class_p = MY_CLASS;
237 part_draw_dsc.type = LV_CHECKBOX_DRAW_PART_BOX;
238 part_draw_dsc.draw_area = &marker_area_transf;
239 part_draw_dsc.part = LV_PART_INDICATOR;
240
241 lv_event_send(obj, LV_EVENT_DRAW_PART_BEGIN, &part_draw_dsc);
242 lv_draw_rect(draw_ctx, &indic_dsc, &marker_area_transf);
243 lv_event_send(obj, LV_EVENT_DRAW_PART_END, &part_draw_dsc);
244
245 lv_coord_t line_space = lv_obj_get_style_text_line_space(obj, LV_PART_MAIN);
246 lv_coord_t letter_space = lv_obj_get_style_text_letter_space(obj, LV_PART_MAIN);
247
248 lv_point_t txt_size;
249 lv_txt_get_size(&txt_size, cb->txt, font, letter_space, line_space, LV_COORD_MAX, LV_TEXT_FLAG_NONE);
250
251 lv_draw_label_dsc_t txt_dsc;
252 lv_draw_label_dsc_init(&txt_dsc);
253 lv_obj_init_draw_label_dsc(obj, LV_PART_MAIN, &txt_dsc);
254
255 lv_coord_t y_ofs = (lv_area_get_height(&marker_area) - font_h) / 2;
256 lv_area_t txt_area;
257 txt_area.x1 = marker_area.x2 + bg_colp;
258 txt_area.x2 = txt_area.x1 + txt_size.x;
259 txt_area.y1 = obj->coords.y1 + bg_topp + y_ofs;
260 txt_area.y2 = txt_area.y1 + txt_size.y;
261
262 lv_draw_label(draw_ctx, &txt_dsc, &txt_area, cb->txt, NULL);
263 }
264 #endif
265
