1 /**
2 * @file lv_cb.c
3 *
4 */
5
6 /*********************
7 * INCLUDES
8 *********************/
9 #include "lv_checkbox_private.h"
10 #include "../../core/lv_obj_private.h"
11 #include "../../core/lv_obj_class_private.h"
12 #if LV_USE_CHECKBOX != 0
13
14 #include "../../misc/lv_assert.h"
15 #include "../../misc/lv_text_ap.h"
16 #include "../../core/lv_group.h"
17 #include "../../draw/lv_draw.h"
18 #include "../../stdlib/lv_string.h"
19
20 /*********************
21 * DEFINES
22 *********************/
23 #define MY_CLASS (&lv_checkbox_class)
24
25 /**********************
26 * TYPEDEFS
27 **********************/
28
29 /**********************
30 * STATIC PROTOTYPES
31 **********************/
32 static void lv_checkbox_constructor(const lv_obj_class_t * class_p, lv_obj_t * obj);
33 static void lv_checkbox_destructor(const lv_obj_class_t * class_p, lv_obj_t * obj);
34 static void lv_checkbox_event(const lv_obj_class_t * class_p, lv_event_t * e);
35 static void lv_checkbox_draw(lv_event_t * e);
36
37 /**********************
38 * STATIC VARIABLES
39 **********************/
40 const lv_obj_class_t lv_checkbox_class = {
41 .constructor_cb = lv_checkbox_constructor,
42 .destructor_cb = lv_checkbox_destructor,
43 .event_cb = lv_checkbox_event,
44 .width_def = LV_SIZE_CONTENT,
45 .height_def = LV_SIZE_CONTENT,
46 .group_def = LV_OBJ_CLASS_GROUP_DEF_TRUE,
47 .instance_size = sizeof(lv_checkbox_t),
48 .base_class = &lv_obj_class,
49 .name = "checkbox",
50 };
51
52 /**********************
53 * MACROS
54 **********************/
55
56 /**********************
57 * GLOBAL FUNCTIONS
58 **********************/
59
lv_checkbox_create(lv_obj_t * parent)60 lv_obj_t * lv_checkbox_create(lv_obj_t * parent)
61 {
62 LV_LOG_INFO("begin");
63 lv_obj_t * obj = lv_obj_class_create_obj(MY_CLASS, parent);
64 lv_obj_class_init_obj(obj);
65 return obj;
66 }
67
68 /*=====================
69 * Setter functions
70 *====================*/
71
lv_checkbox_set_text(lv_obj_t * obj,const char * txt)72 void lv_checkbox_set_text(lv_obj_t * obj, const char * txt)
73 {
74 lv_checkbox_t * cb = (lv_checkbox_t *)obj;
75
76 if(NULL != txt) {
77 size_t len;
78
79 #if LV_USE_ARABIC_PERSIAN_CHARS
80 len = lv_text_ap_calc_bytes_count(txt) + 1;
81 #else
82 len = lv_strlen(txt) + 1;
83 #endif
84
85 if(!cb->static_txt) cb->txt = lv_realloc(cb->txt, len);
86 else cb->txt = lv_malloc(len);
87
88 LV_ASSERT_MALLOC(cb->txt);
89 if(NULL == cb->txt) return;
90
91 #if LV_USE_ARABIC_PERSIAN_CHARS
92 lv_text_ap_proc(txt, cb->txt);
93 #else
94 lv_strcpy(cb->txt, txt);
95 #endif
96
97 cb->static_txt = 0;
98 }
99
100 lv_obj_refresh_self_size(obj);
101 lv_obj_invalidate(obj);
102 }
103
lv_checkbox_set_text_static(lv_obj_t * obj,const char * txt)104 void lv_checkbox_set_text_static(lv_obj_t * obj, const char * txt)
105 {
106 lv_checkbox_t * cb = (lv_checkbox_t *)obj;
107
108 if(!cb->static_txt) lv_free(cb->txt);
109
110 cb->txt = (char *)txt;
111 cb->static_txt = 1;
112
113 lv_obj_refresh_self_size(obj);
114 lv_obj_invalidate(obj);
115 }
116
117 /*=====================
118 * Getter functions
119 *====================*/
120
lv_checkbox_get_text(const lv_obj_t * obj)121 const char * lv_checkbox_get_text(const lv_obj_t * obj)
122 {
123 lv_checkbox_t * cb = (lv_checkbox_t *)obj;
124 return cb->txt;
125 }
126
127 /**********************
128 * STATIC FUNCTIONS
129 **********************/
130
lv_checkbox_constructor(const lv_obj_class_t * class_p,lv_obj_t * obj)131 static void lv_checkbox_constructor(const lv_obj_class_t * class_p, lv_obj_t * obj)
132 {
133 LV_UNUSED(class_p);
134 LV_TRACE_OBJ_CREATE("begin");
135
136 lv_checkbox_t * cb = (lv_checkbox_t *)obj;
137
138 #if LV_WIDGETS_HAS_DEFAULT_VALUE
139 cb->txt = (char *)"Check box";
140 cb->static_txt = 1;
141 #else
142 cb->txt = (char *)"";
143 cb->static_txt = 1;
144 #endif
145
146 lv_obj_add_flag(obj, LV_OBJ_FLAG_CLICKABLE);
147 lv_obj_add_flag(obj, LV_OBJ_FLAG_CHECKABLE);
148 lv_obj_add_flag(obj, LV_OBJ_FLAG_SCROLL_ON_FOCUS);
149 lv_obj_remove_flag(obj, LV_OBJ_FLAG_SCROLLABLE);
150
151 LV_TRACE_OBJ_CREATE("finished");
152 }
153
lv_checkbox_destructor(const lv_obj_class_t * class_p,lv_obj_t * obj)154 static void lv_checkbox_destructor(const lv_obj_class_t * class_p, lv_obj_t * obj)
155 {
156 LV_UNUSED(class_p);
157 LV_TRACE_OBJ_CREATE("begin");
158
159 lv_checkbox_t * cb = (lv_checkbox_t *)obj;
160 if(!cb->static_txt) {
161 lv_free(cb->txt);
162 cb->txt = NULL;
163 }
164 LV_TRACE_OBJ_CREATE("finished");
165 }
166
lv_checkbox_event(const lv_obj_class_t * class_p,lv_event_t * e)167 static void lv_checkbox_event(const lv_obj_class_t * class_p, lv_event_t * e)
168 {
169 LV_UNUSED(class_p);
170
171 lv_result_t res;
172 /*Call the ancestor's event handler*/
173 res = lv_obj_event_base(MY_CLASS, e);
174 if(res != LV_RESULT_OK) return;
175
176 lv_event_code_t code = lv_event_get_code(e);
177 lv_obj_t * obj = lv_event_get_current_target(e);
178
179 if(code == LV_EVENT_GET_SELF_SIZE) {
180 lv_point_t * p = lv_event_get_param(e);
181 lv_checkbox_t * cb = (lv_checkbox_t *)obj;
182
183 const lv_font_t * font = lv_obj_get_style_text_font(obj, LV_PART_MAIN);
184 int32_t font_h = lv_font_get_line_height(font);
185 int32_t line_space = lv_obj_get_style_text_line_space(obj, LV_PART_MAIN);
186 int32_t letter_space = lv_obj_get_style_text_letter_space(obj, LV_PART_MAIN);
187
188 lv_point_t txt_size;
189 lv_text_get_size(&txt_size, cb->txt, font, letter_space, line_space, LV_COORD_MAX, LV_TEXT_FLAG_NONE);
190
191 int32_t bg_colp = lv_obj_get_style_pad_column(obj, LV_PART_MAIN);
192 int32_t marker_leftp = lv_obj_get_style_pad_left(obj, LV_PART_INDICATOR);
193 int32_t marker_rightp = lv_obj_get_style_pad_right(obj, LV_PART_INDICATOR);
194 int32_t marker_topp = lv_obj_get_style_pad_top(obj, LV_PART_INDICATOR);
195 int32_t marker_bottomp = lv_obj_get_style_pad_bottom(obj, LV_PART_INDICATOR);
196 lv_point_t marker_size;
197 marker_size.x = font_h + marker_leftp + marker_rightp;
198 marker_size.y = font_h + marker_topp + marker_bottomp;
199
200 p->x = marker_size.x + txt_size.x + bg_colp;
201 p->y = LV_MAX(marker_size.y, txt_size.y);
202 }
203 else if(code == LV_EVENT_REFR_EXT_DRAW_SIZE) {
204 int32_t * s = lv_event_get_param(e);
205 int32_t m = lv_obj_calculate_ext_draw_size(obj, LV_PART_INDICATOR);
206 *s = LV_MAX(*s, m);
207 }
208 else if(code == LV_EVENT_DRAW_MAIN) {
209 lv_checkbox_draw(e);
210 }
211 }
212
lv_checkbox_draw(lv_event_t * e)213 static void lv_checkbox_draw(lv_event_t * e)
214 {
215 lv_obj_t * obj = lv_event_get_current_target(e);
216 lv_checkbox_t * cb = (lv_checkbox_t *)obj;
217
218 lv_layer_t * layer = lv_event_get_layer(e);
219 const lv_font_t * font = lv_obj_get_style_text_font(obj, LV_PART_MAIN);
220 int32_t font_h = lv_font_get_line_height(font);
221
222 const bool is_rtl = LV_BASE_DIR_RTL == lv_obj_get_style_base_dir(obj, LV_PART_MAIN);
223
224 int32_t bg_border = lv_obj_get_style_border_width(obj, LV_PART_MAIN);
225 int32_t bg_topp = lv_obj_get_style_pad_top(obj, LV_PART_MAIN) + bg_border;
226 int32_t bg_p = is_rtl ? lv_obj_get_style_pad_right(obj, LV_PART_MAIN) : lv_obj_get_style_pad_left(obj,
227 LV_PART_MAIN) + bg_border;
228 int32_t bg_colp = lv_obj_get_style_pad_column(obj, LV_PART_MAIN);
229
230 int32_t marker_leftp = lv_obj_get_style_pad_left(obj, LV_PART_INDICATOR);
231 int32_t marker_rightp = lv_obj_get_style_pad_right(obj, LV_PART_INDICATOR);
232 int32_t marker_topp = lv_obj_get_style_pad_top(obj, LV_PART_INDICATOR);
233 int32_t marker_bottomp = lv_obj_get_style_pad_bottom(obj, LV_PART_INDICATOR);
234
235 int32_t transf_w = lv_obj_get_style_transform_width(obj, LV_PART_INDICATOR);
236 int32_t transf_h = lv_obj_get_style_transform_height(obj, LV_PART_INDICATOR);
237
238 lv_draw_rect_dsc_t indic_dsc;
239 lv_draw_rect_dsc_init(&indic_dsc);
240 indic_dsc.base.layer = layer;
241 lv_obj_init_draw_rect_dsc(obj, LV_PART_INDICATOR, &indic_dsc);
242 lv_area_t marker_area;
243 if(is_rtl) {
244 marker_area.x2 = obj->coords.x2 - bg_p;
245 marker_area.x1 = marker_area.x2 - font_h - marker_leftp - marker_rightp + 1;
246 }
247 else {
248 marker_area.x1 = obj->coords.x1 + bg_p;
249 marker_area.x2 = marker_area.x1 + font_h + marker_leftp + marker_rightp - 1;
250 }
251 marker_area.y1 = obj->coords.y1 + bg_topp;
252 marker_area.y2 = marker_area.y1 + font_h + marker_topp + marker_bottomp - 1;
253
254 lv_area_t marker_area_transf;
255 lv_area_copy(&marker_area_transf, &marker_area);
256 lv_area_increase(&marker_area_transf, transf_w, transf_h);
257
258 lv_draw_rect(layer, &indic_dsc, &marker_area_transf);
259
260 int32_t line_space = lv_obj_get_style_text_line_space(obj, LV_PART_MAIN);
261 int32_t letter_space = lv_obj_get_style_text_letter_space(obj, LV_PART_MAIN);
262
263 lv_point_t txt_size;
264 lv_text_get_size(&txt_size, cb->txt, font, letter_space, line_space, LV_COORD_MAX, LV_TEXT_FLAG_NONE);
265
266 lv_draw_label_dsc_t txt_dsc;
267 lv_draw_label_dsc_init(&txt_dsc);
268 txt_dsc.base.layer = layer;
269 lv_obj_init_draw_label_dsc(obj, LV_PART_MAIN, &txt_dsc);
270 txt_dsc.text = cb->txt;
271
272 int32_t y_ofs = (lv_area_get_height(&marker_area) - font_h) / 2;
273 lv_area_t txt_area;
274 if(is_rtl) {
275 txt_area.x2 = marker_area.x1 - bg_colp;
276 txt_area.x1 = txt_area.x2 - txt_size.x;
277 }
278 else {
279 txt_area.x1 = marker_area.x2 + bg_colp;
280 txt_area.x2 = txt_area.x1 + txt_size.x;
281 }
282 txt_area.y1 = obj->coords.y1 + bg_topp + y_ofs;
283 txt_area.y2 = txt_area.y1 + txt_size.y;
284
285 lv_draw_label(layer, &txt_dsc, &txt_area);
286 }
287 #endif
288
