add lv_components as src/extra and minor fixes
This commit is contained in:
Gabor Kiss-Vamosi
473
src/extra/widgets/spinbox/lv_spinbox.c
Normal file
473
src/extra/widgets/spinbox/lv_spinbox.c
Normal file
@@ -0,0 +1,473 @@
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/**
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* @file lv_spinbox.c
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*
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*/
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/*********************
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* INCLUDES
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*********************/
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#include "lv_spinbox.h"
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#if LV_USE_SPINBOX
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/*********************
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* DEFINES
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*********************/
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/**********************
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* TYPEDEFS
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**********************/
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/**********************
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* STATIC PROTOTYPES
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**********************/
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static lv_res_t lv_spinbox_signal(lv_obj_t * spinbox, lv_signal_t sign, void * param);
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static void lv_spinbox_updatevalue(lv_obj_t * spinbox);
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/**********************
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* STATIC VARIABLES
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**********************/
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static lv_signal_cb_t ancestor_signal;
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/**********************
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* MACROS
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**********************/
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/**********************
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* GLOBAL FUNCTIONS
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**********************/
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/**
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* Create a spinbox object
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* @param par pointer to an object, it will be the parent of the new spinbox
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* @param copy pointer to a spinbox object, if not NULL then the new object will be copied from it
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* @return pointer to the created spinbox
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*/
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lv_obj_t * lv_spinbox_create(lv_obj_t * parent)
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{
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LV_LOG_TRACE("spinbox create started");
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/*Create the ancestor of spinbox*/
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lv_obj_t * spinbox = lv_textarea_create(parent, NULL);
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LV_ASSERT_MEM(spinbox);
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if(spinbox == NULL) return NULL;
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/*Allocate the spinbox type specific extended data*/
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lv_spinbox_ext_t * ext = lv_obj_allocate_ext_attr(spinbox, sizeof(lv_spinbox_ext_t));
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LV_ASSERT_MEM(ext);
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if(ext == NULL) {
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lv_obj_del(spinbox);
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return NULL;
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}
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if(ancestor_signal == NULL) ancestor_signal = lv_obj_get_signal_cb(spinbox);
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/*Initialize the allocated 'ext'*/
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ext->value = 0;
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ext->dec_point_pos = 0;
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ext->digit_count = 5;
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ext->step = 1;
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ext->range_max = 99999;
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ext->range_min = -99999;
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ext->rollover = false;
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/*The signal and draw functions are not copied so set them here*/
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lv_obj_set_signal_cb(spinbox, lv_spinbox_signal);
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lv_textarea_set_one_line(spinbox, true);
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lv_textarea_set_cursor_click_pos(spinbox, true);
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lv_obj_set_width(spinbox, LV_DPI);
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lv_spinbox_updatevalue(spinbox);
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LV_LOG_INFO("spinbox created");
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return spinbox;
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}
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/*=====================
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* Setter functions
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*====================*/
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/**
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* Set spinbox value
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* @param spinbox pointer to spinbox
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* @param i value to be set
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*/
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void lv_spinbox_set_value(lv_obj_t * spinbox, int32_t i)
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{
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lv_spinbox_ext_t * ext = lv_obj_get_ext_attr(spinbox);
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if(ext == NULL) return;
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if(i > ext->range_max) i = ext->range_max;
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if(i < ext->range_min) i = ext->range_min;
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ext->value = i;
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lv_spinbox_updatevalue(spinbox);
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}
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/**
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* Set spinbox rollover function
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* @param spinbox pointer to spinbox
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* @param b true or false to enable or disable (default)
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*/
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void lv_spinbox_set_rollover(lv_obj_t * spinbox, bool b)
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{
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lv_spinbox_ext_t * ext = lv_obj_get_ext_attr(spinbox);
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ext->rollover = b;
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}
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/**
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* Set spinbox digit format (digit count and decimal format)
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* @param spinbox pointer to spinbox
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* @param digit_count number of digit excluding the decimal separator and the sign
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* @param separator_position number of digit before the decimal point. If 0, decimal point is not
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* shown
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*/
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void lv_spinbox_set_digit_format(lv_obj_t * spinbox, uint8_t digit_count, uint8_t separator_position)
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{
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lv_spinbox_ext_t * ext = lv_obj_get_ext_attr(spinbox);
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if(ext == NULL) return;
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if(digit_count > LV_SPINBOX_MAX_DIGIT_COUNT) digit_count = LV_SPINBOX_MAX_DIGIT_COUNT;
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if(separator_position >= digit_count) separator_position = 0;
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if(separator_position > LV_SPINBOX_MAX_DIGIT_COUNT) separator_position = LV_SPINBOX_MAX_DIGIT_COUNT;
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if(digit_count < LV_SPINBOX_MAX_DIGIT_COUNT) {
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int64_t max_val = lv_pow(10, digit_count);
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if(ext->range_max > max_val - 1) ext->range_max = max_val - 1;
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if(ext->range_min < - max_val + 1) ext->range_min = - max_val + 1;
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}
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ext->digit_count = digit_count;
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ext->dec_point_pos = separator_position;
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lv_spinbox_updatevalue(spinbox);
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}
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/**
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* Set spinbox step
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* @param spinbox pointer to spinbox
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* @param step steps on increment/decrement
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*/
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void lv_spinbox_set_step(lv_obj_t * spinbox, uint32_t step)
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{
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lv_spinbox_ext_t * ext = lv_obj_get_ext_attr(spinbox);
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if(ext == NULL) return;
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ext->step = step;
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lv_spinbox_updatevalue(spinbox);
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}
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/**
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* Set spinbox value range
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* @param spinbox pointer to spinbox
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* @param range_min maximum value, inclusive
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* @param range_max minimum value, inclusive
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*/
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void lv_spinbox_set_range(lv_obj_t * spinbox, int32_t range_min, int32_t range_max)
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{
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lv_spinbox_ext_t * ext = lv_obj_get_ext_attr(spinbox);
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if(ext == NULL) return;
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ext->range_max = range_max;
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ext->range_min = range_min;
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if(ext->value > ext->range_max) ext->value = ext->range_max;
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if(ext->value < ext->range_min) ext->value = ext->range_min;
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lv_spinbox_updatevalue(spinbox);
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}
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/*=====================
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* Getter functions
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*====================*/
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/**
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* Get the spinbox numeral value (user has to convert to float according to its digit format)
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* @param spinbox pointer to spinbox
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* @return value integer value of the spinbox
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*/
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int32_t lv_spinbox_get_value(lv_obj_t * spinbox)
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{
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lv_spinbox_ext_t * ext = lv_obj_get_ext_attr(spinbox);
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return ext->value;
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}
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/*=====================
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* Other functions
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*====================*/
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/**
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* Select next lower digit for edition
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* @param spinbox pointer to spinbox
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*/
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void lv_spinbox_step_next(lv_obj_t * spinbox)
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{
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lv_spinbox_ext_t * ext = lv_obj_get_ext_attr(spinbox);
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int32_t new_step = ext->step / 10;
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if((new_step) > 0)
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ext->step = new_step;
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else
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ext->step = 1;
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lv_spinbox_updatevalue(spinbox);
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}
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/**
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* Select next higher digit for edition
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* @param spinbox pointer to spinbox
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*/
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void lv_spinbox_step_prev(lv_obj_t * spinbox)
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{
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lv_spinbox_ext_t * ext = lv_obj_get_ext_attr(spinbox);
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int32_t step_limit;
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step_limit = LV_MAX(ext->range_max, (ext->range_min < 0 ? (-ext->range_min) : ext->range_min));
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int32_t new_step = ext->step * 10;
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if(new_step <= step_limit) ext->step = new_step;
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lv_spinbox_updatevalue(spinbox);
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}
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/**
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* Get spinbox rollover function status
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* @param spinbox pointer to spinbox
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*/
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bool lv_spinbox_get_rollover(lv_obj_t * spinbox)
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{
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lv_spinbox_ext_t * ext = lv_obj_get_ext_attr(spinbox);
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return ext->rollover;
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}
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/**
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* Increment spinbox value by one step
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* @param spinbox pointer to spinbox
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*/
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void lv_spinbox_increment(lv_obj_t * spinbox)
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{
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lv_spinbox_ext_t * ext = lv_obj_get_ext_attr(spinbox);
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if(ext->value + ext->step <= ext->range_max) {
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/*Special mode when zero crossing*/
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if((ext->value + ext->step) > 0 && ext->value < 0) ext->value = -ext->value;
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ext->value += ext->step;
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}
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else {
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// Rollover?
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if((ext->rollover) && (ext->value == ext->range_max))
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ext->value = ext->range_min;
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else
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ext->value = ext->range_max;
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}
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lv_spinbox_updatevalue(spinbox);
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}
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/**
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* Decrement spinbox value by one step
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* @param spinbox pointer to spinbox
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*/
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void lv_spinbox_decrement(lv_obj_t * spinbox)
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{
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lv_spinbox_ext_t * ext = lv_obj_get_ext_attr(spinbox);
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if(ext->value - ext->step >= ext->range_min) {
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/*Special mode when zero crossing*/
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if((ext->value - ext->step) < 0 && ext->value > 0) ext->value = -ext->value;
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ext->value -= ext->step;
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}
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else {
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// Rollover?
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if((ext->rollover) && (ext->value == ext->range_min))
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ext->value = ext->range_max;
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else
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ext->value = ext->range_min;
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}
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lv_spinbox_updatevalue(spinbox);
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}
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/**********************
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* STATIC FUNCTIONS
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**********************/
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/**
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* Signal function of the spinbox
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* @param spinbox pointer to a spinbox object
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* @param sign a signal type from lv_signal_t enum
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* @param param pointer to a signal specific variable
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* @return LV_RES_OK: the object is not deleted in the function; LV_RES_INV: the object is deleted
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*/
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static lv_res_t lv_spinbox_signal(lv_obj_t * spinbox, lv_signal_t sign, void * param)
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{
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/* Include the ancient signal function */
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lv_res_t res = LV_RES_OK;
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res = ancestor_signal(spinbox, sign, param);
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if(res != LV_RES_OK) return res;
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if(sign == LV_SIGNAL_RELEASED) {
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/*If released with an ENCODER then move to the next digit*/
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lv_spinbox_ext_t * ext = lv_obj_get_ext_attr(spinbox);
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lv_indev_t * indev = lv_indev_get_act();
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if(lv_indev_get_type(indev) == LV_INDEV_TYPE_ENCODER) {
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#if LV_USE_GROUP
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if(lv_group_get_editing(lv_obj_get_group(spinbox))) {
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if(ext->step > 1) {
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lv_spinbox_step_next(spinbox);
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}
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else {
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/*Restart from the MSB*/
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ext->step = 1;
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uint32_t i;
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for(i = 0; i < ext->digit_count; i++) {
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int32_t new_step = ext->step * 10;
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if(new_step >= ext->range_max) break;
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ext->step = new_step;
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}
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lv_spinbox_step_prev(spinbox);
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}
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}
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#endif
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}
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/*The cursor has been positioned to a digit.
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* Set `step` accordingly*/
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else {
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const char * txt = lv_textarea_get_text(spinbox);
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size_t txt_len = strlen(txt);
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if(txt[ext->ta.cursor.pos] == '.') {
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lv_textarea_cursor_left(spinbox);
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}
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else if(ext->ta.cursor.pos == (uint32_t)txt_len) {
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lv_textarea_set_cursor_pos(spinbox, txt_len - 1);
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}
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else if(ext->ta.cursor.pos == 0 && ext->range_min < 0) {
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lv_textarea_set_cursor_pos(spinbox, 1);
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}
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size_t len = ext->digit_count - 1;
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uint16_t cp = ext->ta.cursor.pos;
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if(ext->ta.cursor.pos > ext->dec_point_pos && ext->dec_point_pos != 0) cp--;
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uint32_t pos = len - cp;
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if(ext->range_min < 0) pos++;
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ext->step = 1;
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uint16_t i;
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for(i = 0; i < pos; i++) ext->step *= 10;
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}
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}
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else if(sign == LV_SIGNAL_CONTROL) {
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#if LV_USE_GROUP
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lv_indev_type_t indev_type = lv_indev_get_type(lv_indev_get_act());
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uint32_t c = *((uint32_t *)param); /*uint32_t because can be UTF-8*/
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if(c == LV_KEY_RIGHT) {
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if(indev_type == LV_INDEV_TYPE_ENCODER)
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lv_spinbox_increment(spinbox);
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else
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lv_spinbox_step_next(spinbox);
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}
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else if(c == LV_KEY_LEFT) {
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if(indev_type == LV_INDEV_TYPE_ENCODER)
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lv_spinbox_decrement(spinbox);
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else
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lv_spinbox_step_prev(spinbox);
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}
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else if(c == LV_KEY_UP) {
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lv_spinbox_increment(spinbox);
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}
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else if(c == LV_KEY_DOWN) {
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lv_spinbox_decrement(spinbox);
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}
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else {
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lv_textarea_add_char(spinbox, c);
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}
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#endif
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}
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return res;
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}
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static void lv_spinbox_updatevalue(lv_obj_t * spinbox)
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{
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lv_spinbox_ext_t * ext = lv_obj_get_ext_attr(spinbox);
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char buf[LV_SPINBOX_MAX_DIGIT_COUNT + 8];
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lv_memset_00(buf, sizeof(buf));
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char * buf_p = buf;
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uint8_t cur_shift_left = 0;
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if(ext->range_min < 0) { // hide sign if there are only positive values
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/*Add the sign*/
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(*buf_p) = ext->value >= 0 ? '+' : '-';
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buf_p++;
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}
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else {
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/*Cursor need shift to left*/
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cur_shift_left++;
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}
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int32_t i;
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char digits[LV_SPINBOX_MAX_DIGIT_COUNT + 4];
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/*Convert the numbers to string (the sign is already handled so always covert positive number)*/
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lv_snprintf(digits, sizeof(digits), "%d", LV_ABS(ext->value));
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/*Add leading zeros*/
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int lz_cnt = ext->digit_count - (int)strlen(digits);
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if(lz_cnt > 0) {
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for(i = (uint16_t)strlen(digits); i >= 0; i--) {
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digits[i + lz_cnt] = digits[i];
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}
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for(i = 0; i < lz_cnt; i++) {
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digits[i] = '0';
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}
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}
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int32_t intDigits;
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intDigits = (ext->dec_point_pos == 0) ? ext->digit_count : ext->dec_point_pos;
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/*Add the decimal part*/
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for(i = 0; i < intDigits && digits[i] != '\0'; i++) {
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(*buf_p) = digits[i];
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buf_p++;
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}
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if(ext->dec_point_pos != 0) {
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/*Insert the decimal point*/
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(*buf_p) = '.';
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buf_p++;
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for(/*Leave i*/; i < ext->digit_count && digits[i] != '\0'; i++) {
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(*buf_p) = digits[i];
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buf_p++;
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}
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}
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/*Refresh the text*/
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lv_textarea_set_text(spinbox, (char *)buf);
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/*Set the cursor position*/
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int32_t step = ext->step;
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uint8_t cur_pos = (uint8_t)ext->digit_count;
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while(step >= 10) {
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step /= 10;
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cur_pos--;
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}
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if(cur_pos > intDigits) cur_pos++; /*Skip the decimal point*/
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cur_pos -= cur_shift_left;
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lv_textarea_set_cursor_pos(spinbox, cur_pos);
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}
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#endif /*LV_USE_SPINBOX*/
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