1 /**
2 * @file lv_xml_chart_parser.c
3 *
4 */
5
6 /*********************
7 * INCLUDES
8 *********************/
9 #include "lv_xml_chart_parser.h"
10 #if LV_USE_XML
11
12 #include "../../../lvgl.h"
13 #include "../../../lvgl_private.h"
14
15 /*********************
16 * DEFINES
17 *********************/
18
19 /**********************
20 * TYPEDEFS
21 **********************/
22
23 /**********************
24 * STATIC PROTOTYPES
25 **********************/
26 static lv_chart_type_t chart_type_to_enum(const char * txt);
27 static lv_chart_update_mode_t chart_update_mode_to_enum(const char * txt);
28 static lv_chart_axis_t chart_axis_to_enum(const char * txt);
29
30 /**********************
31 * STATIC VARIABLES
32 **********************/
33
34 /**********************
35 * MACROS
36 **********************/
37
38 /**********************
39 * GLOBAL FUNCTIONS
40 **********************/
41
lv_xml_chart_create(lv_xml_parser_state_t * state,const char ** attrs)42 void * lv_xml_chart_create(lv_xml_parser_state_t * state, const char ** attrs)
43 {
44 LV_UNUSED(attrs);
45 void * item = lv_chart_create(lv_xml_state_get_parent(state));
46
47 return item;
48 }
49
50
lv_xml_chart_apply(lv_xml_parser_state_t * state,const char ** attrs)51 void lv_xml_chart_apply(lv_xml_parser_state_t * state, const char ** attrs)
52 {
53 void * item = lv_xml_state_get_item(state);
54
55 lv_xml_obj_apply(state, attrs); /*Apply the common properties, e.g. width, height, styles flags etc*/
56
57 for(int i = 0; attrs[i]; i += 2) {
58 const char * name = attrs[i];
59 const char * value = attrs[i + 1];
60
61 if(lv_streq("point_count", name)) lv_chart_set_point_count(item, lv_xml_atoi(value));
62 else if(lv_streq("type", name)) lv_chart_set_type(item, chart_type_to_enum(value));
63 else if(lv_streq("update_mode", name)) lv_chart_set_update_mode(item, chart_update_mode_to_enum(value));
64 else if(lv_streq("div_line_count", name)) {
65
66 int32_t value1 = lv_xml_atoi_split(&value, ' ');
67 int32_t value2 = lv_xml_atoi_split(&value, ' ');
68 lv_chart_set_div_line_count(item, value1, value2);
69 }
70 }
71 }
72
lv_xml_chart_series_create(lv_xml_parser_state_t * state,const char ** attrs)73 void * lv_xml_chart_series_create(lv_xml_parser_state_t * state, const char ** attrs)
74 {
75 const char * color = lv_xml_get_value_of(attrs, "color");
76 const char * axis = lv_xml_get_value_of(attrs, "axis");
77 void * item = lv_chart_add_series(lv_xml_state_get_parent(state), lv_color_hex(lv_xml_strtol(color, NULL, 16)),
78 chart_axis_to_enum(axis));
79 return item;
80 }
81
lv_xml_chart_series_apply(lv_xml_parser_state_t * state,const char ** attrs)82 void lv_xml_chart_series_apply(lv_xml_parser_state_t * state, const char ** attrs)
83 {
84 LV_UNUSED(state);
85 LV_UNUSED(attrs);
86
87 lv_obj_t * chart = lv_xml_state_get_parent(state);
88 lv_chart_series_t * ser = lv_xml_state_get_item(state);
89
90 for(int i = 0; attrs[i]; i += 2) {
91 const char * name = attrs[i];
92 const char * value = attrs[i + 1];
93
94 if(lv_streq("values", name)) {
95 while(value[0] != '\0') {
96 int32_t v = lv_xml_atoi_split(&value, ' ');
97 lv_chart_set_next_value(chart, ser, v);
98 }
99 }
100 }
101 }
102
lv_xml_chart_cursor_create(lv_xml_parser_state_t * state,const char ** attrs)103 void * lv_xml_chart_cursor_create(lv_xml_parser_state_t * state, const char ** attrs)
104 {
105 const char * color = lv_xml_get_value_of(attrs, "color");
106 const char * dir = lv_xml_get_value_of(attrs, "dir");
107 void * item = lv_chart_add_cursor(lv_xml_state_get_parent(state), lv_color_hex(lv_xml_strtol(color, NULL, 16)),
108 lv_xml_dir_to_enum(dir));
109
110 return item;
111 }
112
lv_xml_chart_cursor_apply(lv_xml_parser_state_t * state,const char ** attrs)113 void lv_xml_chart_cursor_apply(lv_xml_parser_state_t * state, const char ** attrs)
114 {
115 LV_UNUSED(state);
116 LV_UNUSED(attrs);
117
118 lv_obj_t * chart = lv_xml_state_get_parent(state);
119 lv_chart_cursor_t * cursor = lv_xml_state_get_item(state);
120
121 for(int i = 0; attrs[i]; i += 2) {
122 const char * name = attrs[i];
123 const char * value = attrs[i + 1];
124
125
126 if(lv_streq("pos", name)) {
127 int32_t x = lv_xml_atoi_split(&value, ' ');
128 int32_t y = lv_xml_atoi_split(&value, ' ');
129 lv_point_t p = {x, y};
130 lv_chart_set_cursor_pos(chart, cursor, &p);
131 }
132 }
133 }
134
lv_xml_chart_axis_create(lv_xml_parser_state_t * state,const char ** attrs)135 void * lv_xml_chart_axis_create(lv_xml_parser_state_t * state, const char ** attrs)
136 {
137 LV_UNUSED(attrs);
138
139 /*Nothing to create*/
140 return lv_xml_state_get_parent(state);;
141 }
142
lv_xml_chart_axis_apply(lv_xml_parser_state_t * state,const char ** attrs)143 void lv_xml_chart_axis_apply(lv_xml_parser_state_t * state, const char ** attrs)
144 {
145 LV_UNUSED(state);
146 LV_UNUSED(attrs);
147
148 lv_obj_t * chart = lv_xml_state_get_parent(state);
149 lv_chart_axis_t axis = chart_axis_to_enum(lv_xml_get_value_of(attrs, "axis"));
150
151 for(int i = 0; attrs[i]; i += 2) {
152 const char * name = attrs[i];
153 const char * value = attrs[i + 1];
154
155 if(lv_streq("range", name)) {
156 int32_t min_val = lv_xml_atoi_split(&value, ' ');
157 int32_t max_val = lv_xml_atoi_split(&value, ' ');
158 lv_chart_set_range(chart, axis, min_val, max_val);
159 }
160 }
161 }
162
163 /**********************
164 * STATIC FUNCTIONS
165 **********************/
166
chart_type_to_enum(const char * txt)167 static lv_chart_type_t chart_type_to_enum(const char * txt)
168 {
169 if(lv_streq("none", txt)) return LV_CHART_TYPE_NONE;
170 if(lv_streq("line", txt)) return LV_CHART_TYPE_LINE;
171 if(lv_streq("bar", txt)) return LV_CHART_TYPE_BAR;
172 if(lv_streq("scatter", txt)) return LV_CHART_TYPE_SCATTER;
173
174 LV_LOG_WARN("%s is an unknown value for chart's chart_type", txt);
175 return 0; /*Return 0 in lack of a better option. */
176 }
177
chart_update_mode_to_enum(const char * txt)178 static lv_chart_update_mode_t chart_update_mode_to_enum(const char * txt)
179 {
180 if(lv_streq("shift", txt)) return LV_CHART_UPDATE_MODE_SHIFT;
181 if(lv_streq("circular", txt)) return LV_CHART_UPDATE_MODE_CIRCULAR;
182
183 LV_LOG_WARN("%s is an unknown value for chart's chart_update_mode", txt);
184 return 0; /*Return 0 in lack of a better option. */
185 }
186
chart_axis_to_enum(const char * txt)187 static lv_chart_axis_t chart_axis_to_enum(const char * txt)
188 {
189 if(lv_streq("primary_x", txt)) return LV_CHART_AXIS_PRIMARY_X;
190 if(lv_streq("primary_y", txt)) return LV_CHART_AXIS_PRIMARY_Y;
191 if(lv_streq("secondary_x", txt)) return LV_CHART_AXIS_SECONDARY_X;
192 if(lv_streq("secondary_y", txt)) return LV_CHART_AXIS_SECONDARY_Y;
193
194 LV_LOG_WARN("%s is an unknown value for chart's chart_axis", txt);
195 return 0; /*Return 0 in lack of a better option. */
196 }
197
198 #endif /* LV_USE_XML */
199
