diff options
Diffstat (limited to 'src/libs/lvgl/src/lv_objx/lv_spinbox.c')
| -rw-r--r-- | src/libs/lvgl/src/lv_objx/lv_spinbox.c | 475 |
1 files changed, 475 insertions, 0 deletions
diff --git a/src/libs/lvgl/src/lv_objx/lv_spinbox.c b/src/libs/lvgl/src/lv_objx/lv_spinbox.c new file mode 100644 index 00000000..42c229c2 --- /dev/null +++ b/src/libs/lvgl/src/lv_objx/lv_spinbox.c @@ -0,0 +1,475 @@ +/** + * @file lv_spinbox.c + * + */ + +/********************* + * INCLUDES + *********************/ +#include "lv_spinbox.h" + +#if LV_USE_SPINBOX != 0 +#include "../lv_core/lv_debug.h" +#include "../lv_themes/lv_theme.h" +#include "../lv_misc/lv_math.h" +#include "../lv_misc/lv_utils.h" + +/********************* + * DEFINES + *********************/ +#define LV_OBJX_NAME "lv_spinbox" + +/********************** + * TYPEDEFS + **********************/ + +/********************** + * STATIC PROTOTYPES + **********************/ +static lv_res_t lv_spinbox_signal(lv_obj_t * spinbox, lv_signal_t sign, void * param); +static void lv_spinbox_updatevalue(lv_obj_t * spinbox); + +/********************** + * STATIC VARIABLES + **********************/ +static lv_signal_cb_t ancestor_signal; +static lv_design_cb_t ancestor_design; + +/********************** + * MACROS + **********************/ + +/********************** + * GLOBAL FUNCTIONS + **********************/ + +/** + * Create a spinbox object + * @param par pointer to an object, it will be the parent of the new spinbox + * @param copy pointer to a spinbox object, if not NULL then the new object will be copied from it + * @return pointer to the created spinbox + */ +lv_obj_t * lv_spinbox_create(lv_obj_t * par, const lv_obj_t * copy) +{ + LV_LOG_TRACE("spinbox create started"); + + /*Create the ancestor of spinbox*/ + lv_obj_t * new_spinbox = lv_ta_create(par, copy); + LV_ASSERT_MEM(new_spinbox); + if(new_spinbox == NULL) return NULL; + + /*Allocate the spinbox type specific extended data*/ + lv_spinbox_ext_t * ext = lv_obj_allocate_ext_attr(new_spinbox, sizeof(lv_spinbox_ext_t)); + LV_ASSERT_MEM(ext); + if(ext == NULL) return NULL; + if(ancestor_signal == NULL) ancestor_signal = lv_obj_get_signal_cb(new_spinbox); + if(ancestor_design == NULL) ancestor_design = lv_obj_get_design_cb(new_spinbox); + + /*Initialize the allocated 'ext'*/ + ext->value = 0; + ext->dec_point_pos = 0; + ext->digit_count = 5; + ext->digit_padding_left = 0; + ext->step = 1; + ext->range_max = 99999; + ext->range_min = -99999; + + lv_ta_set_cursor_type(new_spinbox, LV_CURSOR_BLOCK); + lv_ta_set_one_line(new_spinbox, true); + lv_ta_set_cursor_click_pos(new_spinbox, false); + + /*The signal and design functions are not copied so set them here*/ + lv_obj_set_signal_cb(new_spinbox, lv_spinbox_signal); + lv_obj_set_design_cb(new_spinbox, ancestor_design); /*Leave the Text area's design function*/ + + /*Init the new spinbox spinbox*/ + if(copy == NULL) { + /*Set the default styles*/ + lv_theme_t * th = lv_theme_get_current(); + if(th) { + lv_spinbox_set_style(new_spinbox, LV_SPINBOX_STYLE_BG, th->style.spinbox.bg); + lv_spinbox_set_style(new_spinbox, LV_SPINBOX_STYLE_CURSOR, th->style.spinbox.cursor); + lv_spinbox_set_style(new_spinbox, LV_SPINBOX_STYLE_SB, th->style.spinbox.sb); + } + } + /*Copy an existing spinbox*/ + else { + lv_spinbox_ext_t * copy_ext = lv_obj_get_ext_attr(copy); + + lv_spinbox_set_value(new_spinbox, copy_ext->value); + lv_spinbox_set_digit_format(new_spinbox, (uint8_t)copy_ext->digit_count, (uint8_t)copy_ext->dec_point_pos); + lv_spinbox_set_range(new_spinbox, copy_ext->range_min, copy_ext->range_max); + lv_spinbox_set_step(new_spinbox, copy_ext->step); + + /*Refresh the style with new signal function*/ + lv_obj_refresh_style(new_spinbox); + } + + lv_spinbox_updatevalue(new_spinbox); + + LV_LOG_INFO("spinbox created"); + + return new_spinbox; +} + +/*===================== + * Setter functions + *====================*/ + +/** + * Set spinbox value + * @param spinbox pointer to spinbox + * @param i value to be set + */ +void lv_spinbox_set_value(lv_obj_t * spinbox, int32_t i) +{ + LV_ASSERT_OBJ(spinbox, LV_OBJX_NAME); + + lv_spinbox_ext_t * ext = lv_obj_get_ext_attr(spinbox); + if(ext == NULL) return; + + if(i > ext->range_max) i = ext->range_max; + if(i < ext->range_min) i = ext->range_min; + + ext->value = i; + + lv_spinbox_updatevalue(spinbox); +} + +/** + * Set spinbox digit format (digit count and decimal format) + * @param spinbox pointer to spinbox + * @param digit_count number of digit excluding the decimal separator and the sign + * @param separator_position number of digit before the decimal point. If 0, decimal point is not + * shown + */ +void lv_spinbox_set_digit_format(lv_obj_t * spinbox, uint8_t digit_count, uint8_t separator_position) +{ + LV_ASSERT_OBJ(spinbox, LV_OBJX_NAME); + + lv_spinbox_ext_t * ext = lv_obj_get_ext_attr(spinbox); + if(ext == NULL) return; + + if(digit_count > LV_SPINBOX_MAX_DIGIT_COUNT) digit_count = LV_SPINBOX_MAX_DIGIT_COUNT; + + if(separator_position > LV_SPINBOX_MAX_DIGIT_COUNT) separator_position = LV_SPINBOX_MAX_DIGIT_COUNT; + + ext->digit_count = digit_count; + ext->dec_point_pos = separator_position; + + lv_spinbox_updatevalue(spinbox); +} + +/** + * Set spinbox step + * @param spinbox pointer to spinbox + * @param step steps on increment/decrement + */ +void lv_spinbox_set_step(lv_obj_t * spinbox, uint32_t step) +{ + LV_ASSERT_OBJ(spinbox, LV_OBJX_NAME); + + lv_spinbox_ext_t * ext = lv_obj_get_ext_attr(spinbox); + if(ext == NULL) return; + + ext->step = step; +} + +/** + * Set spinbox value range + * @param spinbox pointer to spinbox + * @param range_min maximum value, inclusive + * @param range_max minimum value, inclusive + */ +void lv_spinbox_set_range(lv_obj_t * spinbox, int32_t range_min, int32_t range_max) +{ + LV_ASSERT_OBJ(spinbox, LV_OBJX_NAME); + + lv_spinbox_ext_t * ext = lv_obj_get_ext_attr(spinbox); + if(ext == NULL) return; + + ext->range_max = range_max; + ext->range_min = range_min; + + if(ext->value > ext->range_max) { + ext->value = ext->range_max; + lv_obj_invalidate(spinbox); + } + if(ext->value < ext->range_min) { + ext->value = ext->range_min; + lv_obj_invalidate(spinbox); + } +} + +/** + * Set spinbox left padding in digits count (added between sign and first digit) + * @param spinbox pointer to spinbox + * @param cb Callback function called on value change event + */ +void lv_spinbox_set_padding_left(lv_obj_t * spinbox, uint8_t padding) +{ + LV_ASSERT_OBJ(spinbox, LV_OBJX_NAME); + + lv_spinbox_ext_t * ext = lv_obj_get_ext_attr(spinbox); + ext->digit_padding_left = padding; + lv_spinbox_updatevalue(spinbox); +} + +/*===================== + * Getter functions + *====================*/ + +/** + * Get the spinbox numeral value (user has to convert to float according to its digit format) + * @param spinbox pointer to spinbox + * @return value integer value of the spinbox + */ +int32_t lv_spinbox_get_value(lv_obj_t * spinbox) +{ + LV_ASSERT_OBJ(spinbox, LV_OBJX_NAME); + + lv_spinbox_ext_t * ext = lv_obj_get_ext_attr(spinbox); + + return ext->value; +} + +/*===================== + * Other functions + *====================*/ + +/** + * Select next lower digit for edition + * @param spinbox pointer to spinbox + */ +void lv_spinbox_step_next(lv_obj_t * spinbox) +{ + LV_ASSERT_OBJ(spinbox, LV_OBJX_NAME); + + lv_spinbox_ext_t * ext = lv_obj_get_ext_attr(spinbox); + + int32_t new_step = ext->step / 10; + if((new_step) > 0) + ext->step = new_step; + else + ext->step = 1; + + lv_spinbox_updatevalue(spinbox); +} + +/** + * Select next higher digit for edition + * @param spinbox pointer to spinbox + */ +void lv_spinbox_step_prev(lv_obj_t * spinbox) +{ + LV_ASSERT_OBJ(spinbox, LV_OBJX_NAME); + + lv_spinbox_ext_t * ext = lv_obj_get_ext_attr(spinbox); + int32_t step_limit; + step_limit = LV_MATH_MAX(ext->range_max, (ext->range_min < 0 ? (-ext->range_min) : ext->range_min)); + int32_t new_step = ext->step * 10; + if(new_step <= step_limit) ext->step = new_step; + + lv_spinbox_updatevalue(spinbox); +} + +/** + * Increment spinbox value by one step + * @param spinbox pointer to spinbox + */ +void lv_spinbox_increment(lv_obj_t * spinbox) +{ + LV_ASSERT_OBJ(spinbox, LV_OBJX_NAME); + + lv_spinbox_ext_t * ext = lv_obj_get_ext_attr(spinbox); + + if(ext->value + ext->step <= ext->range_max) { + /*Special mode when zero crossing*/ + if((ext->value + ext->step) > 0 && ext->value < 0) ext->value = -ext->value; + ext->value += ext->step; + + } else { + ext->value = ext->range_max; + } + + lv_spinbox_updatevalue(spinbox); +} + +/** + * Decrement spinbox value by one step + * @param spinbox pointer to spinbox + */ +void lv_spinbox_decrement(lv_obj_t * spinbox) +{ + LV_ASSERT_OBJ(spinbox, LV_OBJX_NAME); + + lv_spinbox_ext_t * ext = lv_obj_get_ext_attr(spinbox); + + if(ext->value - ext->step >= ext->range_min) { + /*Special mode when zero crossing*/ + if((ext->value - ext->step) < 0 && ext->value > 0) ext->value = -ext->value; + ext->value -= ext->step; + } else { + ext->value = ext->range_min; + } + + lv_spinbox_updatevalue(spinbox); +} + +/********************** + * STATIC FUNCTIONS + **********************/ + +/** + * Signal function of the spinbox + * @param spinbox pointer to a spinbox object + * @param sign a signal type from lv_signal_t enum + * @param param pointer to a signal specific variable + * @return LV_RES_OK: the object is not deleted in the function; LV_RES_INV: the object is deleted + */ +static lv_res_t lv_spinbox_signal(lv_obj_t * spinbox, lv_signal_t sign, void * param) +{ + + lv_res_t res = LV_RES_OK; + + /* Include the ancient signal function */ + if(sign != LV_SIGNAL_CONTROL) { + res = ancestor_signal(spinbox, sign, param); + if(res != LV_RES_OK) return res; + } + if(sign == LV_SIGNAL_GET_TYPE) return lv_obj_handle_get_type_signal(param, LV_OBJX_NAME); + + + lv_spinbox_ext_t * ext = lv_obj_get_ext_attr(spinbox); + if(sign == LV_SIGNAL_CLEANUP) { + /*Nothing to cleanup. (No dynamically allocated memory in 'ext')*/ + } else if(sign == LV_SIGNAL_GET_TYPE) { + lv_obj_type_t * buf = param; + uint8_t i; + for(i = 0; i < LV_MAX_ANCESTOR_NUM - 1; i++) { /*Find the last set data*/ + if(buf->type[i] == NULL) break; + } + buf->type[i] = "lv_spinbox"; + } else if(sign == LV_SIGNAL_RELEASED) { + /*If released with an ENCODER then move to the next digit*/ +#if LV_USE_GROUP + lv_indev_t * indev = lv_indev_get_act(); + if(lv_indev_get_type(indev) == LV_INDEV_TYPE_ENCODER) { + if(lv_group_get_editing(lv_obj_get_group(spinbox))) { + if(ext->step > 1) { + lv_spinbox_step_next(spinbox); + } else { + /*Restart from the MSB*/ + ext->step = 1; + uint32_t i; + for(i = 0; i < ext->digit_count; i++) { + int32_t new_step = ext->step * 10; + if(new_step >= ext->range_max) break; + ext->step = new_step; + } + lv_spinbox_step_prev(spinbox); + } + } + } +#endif + } else if(sign == LV_SIGNAL_CONTROL) { + lv_indev_type_t indev_type = lv_indev_get_type(lv_indev_get_act()); + + uint32_t c = *((uint32_t *)param); /*uint32_t because can be UTF-8*/ + if(c == LV_KEY_RIGHT) { + if(indev_type == LV_INDEV_TYPE_ENCODER) + lv_spinbox_increment(spinbox); + else + lv_spinbox_step_next(spinbox); + } else if(c == LV_KEY_LEFT) { + if(indev_type == LV_INDEV_TYPE_ENCODER) + lv_spinbox_decrement(spinbox); + else + lv_spinbox_step_prev(spinbox); + } else if(c == LV_KEY_UP) { + lv_spinbox_increment(spinbox); + } else if(c == LV_KEY_DOWN) { + lv_spinbox_decrement(spinbox); + } else { + lv_ta_add_char(spinbox, c); + } + } + + return res; +} + +static void lv_spinbox_updatevalue(lv_obj_t * spinbox) +{ + lv_spinbox_ext_t * ext = lv_obj_get_ext_attr(spinbox); + + char buf[LV_SPINBOX_MAX_DIGIT_COUNT + 8]; + memset(buf, 0, sizeof(buf)); + char * buf_p = buf; + + if (ext->range_min < 0) { // hide sign if there are only positive values + /*Add the sign*/ + (*buf_p) = ext->value >= 0 ? '+' : '-'; + buf_p++; + } + + int32_t i; + /*padding left*/ + for(i = 0; i < ext->digit_padding_left; i++) { + (*buf_p) = ' '; + buf_p++; + } + + char digits[64]; + /*Convert the numbers to string (the sign is already handled so always covert positive number)*/ + lv_utils_num_to_str(ext->value < 0 ? -ext->value : ext->value, digits); + + /*Add leading zeros*/ + int lz_cnt = ext->digit_count - (int)strlen(digits); + if(lz_cnt > 0) { + for(i = (uint16_t)strlen(digits); i >= 0; i--) { + digits[i + lz_cnt] = digits[i]; + } + for(i = 0; i < lz_cnt; i++) { + digits[i] = '0'; + } + } + + int32_t intDigits; + intDigits = (ext->dec_point_pos == 0) ? ext->digit_count : ext->dec_point_pos; + + /*Add the decimal part*/ + for(i = 0; i < intDigits && digits[i] != '\0'; i++) { + (*buf_p) = digits[i]; + buf_p++; + } + + if(ext->dec_point_pos != 0) { + /*Insert the decimal point*/ + (*buf_p) = '.'; + buf_p++; + + for(/*Leave i*/; i < ext->digit_count && digits[i] != '\0'; i++) { + (*buf_p) = digits[i]; + buf_p++; + } + } + + /*Refresh the text*/ + lv_ta_set_text(spinbox, (char *)buf); + + /*Set the cursor position*/ + int32_t step = ext->step; + uint8_t cur_pos = (uint8_t)ext->digit_count; + while(step >= 10) { + step /= 10; + cur_pos--; + } + + if(cur_pos > intDigits) cur_pos++; /*Skip teh decimal point*/ + + cur_pos += ext->digit_padding_left; + + lv_ta_set_cursor_pos(spinbox, cur_pos); +} + +#endif |