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https://github.com/lvgl/lvgl.git
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280 lines
7.0 KiB
C
280 lines
7.0 KiB
C
/**
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* @file lv_ta.h
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*
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*/
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#ifndef LV_TA_H
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#define LV_TA_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*********************
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* INCLUDES
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*********************/
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#include "../../lv_conf.h"
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#if USE_LV_TA != 0
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/*Testing of dependencies*/
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#if USE_LV_PAGE == 0
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#error "lv_ta: lv_page is required. Enable it in lv_conf.h (USE_LV_PAGE 1) "
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#endif
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#if USE_LV_LABEL == 0
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#error "lv_ta: lv_label is required. Enable it in lv_conf.h (USE_LV_LABEL 1) "
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#endif
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#include "../lv_core/lv_obj.h"
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#include "lv_page.h"
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#include "lv_label.h"
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/*********************
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* DEFINES
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*********************/
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#define LV_TA_CURSOR_LAST (0x7FFF) /*Put the cursor after the last character*/
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/**********************
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* TYPEDEFS
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**********************/
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typedef enum {
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LV_CURSOR_NONE,
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LV_CURSOR_LINE,
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LV_CURSOR_BLOCK,
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LV_CURSOR_OUTLINE,
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LV_CURSOR_UNDERLINE,
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LV_CURSOR_HIDDEN = 0x10, /*Or it to any value to hide the cursor temporally*/
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}lv_cursor_type_t;
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/*Data of text area*/
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typedef struct
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{
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lv_page_ext_t page; /*Ext. of ancestor*/
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/*New data for this type */
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lv_obj_t * label; /*Label of the text area*/
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char * pwd_tmp; /*Used to store the original text in password mode*/
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uint8_t pwd_mode :1; /*Replace characters with '*' */
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uint8_t one_line :1; /*One line mode (ignore line breaks)*/
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struct {
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lv_style_t *style; /*Style of the cursor (NULL to use label's style)*/
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lv_coord_t valid_x; /*Used when stepping up/down in text area when stepping to a shorter line. (Handled by the library)*/
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uint16_t pos; /*The current cursor position (0: before 1. letter; 1: before 2. letter etc.)*/
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lv_cursor_type_t type; /*Shape of the cursor*/
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uint8_t state :1; /*Indicates that the cursor is visible now or not (Handled by the library)*/
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}cursor;
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}lv_ta_ext_t;
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typedef enum {
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LV_TA_STYLE_BG,
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LV_TA_STYLE_SB,
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LV_TA_STYLE_CURSOR,
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}lv_ta_style_t;
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/**********************
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* GLOBAL PROTOTYPES
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**********************/
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/**
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* Create a text area objects
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* @param par pointer to an object, it will be the parent of the new text area
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* @param copy pointer to a text area object, if not NULL then the new object will be copied from it
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* @return pointer to the created text area
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*/
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lv_obj_t * lv_ta_create(lv_obj_t * par, lv_obj_t * copy);
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/*======================
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* Add/remove functions
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*=====================*/
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/**
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* Insert a character to the current cursor position
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* @param ta pointer to a text area object
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* @param c a character
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*/
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void lv_ta_add_char(lv_obj_t * ta, char c);
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/**
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* Insert a text to the current cursor position
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* @param ta pointer to a text area object
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* @param txt a '\0' terminated string to insert
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*/
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void lv_ta_add_text(lv_obj_t * ta, const char * txt);
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/**
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* Delete a the left character from the current cursor position
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* @param ta pointer to a text area object
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*/
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void lv_ta_del_char(lv_obj_t * ta);
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/*=====================
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* Setter functions
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*====================*/
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/**
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* Set the text of a text area
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* @param ta pointer to a text area
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* @param txt pointer to the text
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*/
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void lv_ta_set_text(lv_obj_t * ta, const char * txt);
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/**
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* Set the cursor position
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* @param obj pointer to a text area object
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* @param pos the new cursor position in character index
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* < 0 : index from the end of the text
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* LV_TA_CURSOR_LAST: go after the last character
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*/
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void lv_ta_set_cursor_pos(lv_obj_t * ta, int16_t pos);
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/**
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* Set the cursor type.
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* @param ta pointer to a text area object
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* @param cur_type: element of 'lv_cursor_type_t'
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*/
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void lv_ta_set_cursor_type(lv_obj_t * ta, lv_cursor_type_t cur_type);
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/**
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* Enable/Disable password mode
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* @param ta pointer to a text area object
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* @param pwd_en true: enable, false: disable
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*/
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void lv_ta_set_pwd_mode(lv_obj_t * ta, bool pwd_en);
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/**
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* Configure the text area to one line or back to normal
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* @param ta pointer to a Text area object
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* @param en true: one line, false: normal
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*/
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void lv_ta_set_one_line(lv_obj_t * ta, bool en);
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/**
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* Set the scroll bar mode of a text area
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* @param ta pointer to a text area object
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* @param sb_mode the new mode from 'lv_page_sb_mode_t' enum
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*/
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static inline void lv_ta_set_sb_mode(lv_obj_t * ta, lv_sb_mode_t mode)
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{
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lv_page_set_sb_mode(ta, mode);
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}
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/**
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* Set a style of a text area
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* @param ta pointer to a text area object
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* @param type which style should be set
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* @param style pointer to a style
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*/
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void lv_ta_set_style(lv_obj_t *ta, lv_ta_style_t type, lv_style_t *style);
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/*=====================
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* Getter functions
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*====================*/
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/**
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* Get the text of a text area
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* @param ta pointer to a text area object
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* @return pointer to the text
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*/
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const char * lv_ta_get_text(lv_obj_t * ta);
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/**
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* Get the label of a text area
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* @param ta pointer to a text area object
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* @return pointer to the label object
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*/
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lv_obj_t * lv_ta_get_label(lv_obj_t * ta);
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/**
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* Get the current cursor position in character index
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* @param ta pointer to a text area object
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* @return the cursor position
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*/
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uint16_t lv_ta_get_cursor_pos(lv_obj_t * ta);
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/**
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* Get the current cursor visibility.
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* @param ta pointer to a text area object
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* @return true: the cursor is drawn, false: the cursor is hidden
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*/
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bool lv_ta_get_cursor_show(lv_obj_t * ta);
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/**
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* Get the current cursor type.
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* @param ta pointer to a text area object
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* @return element of 'lv_cursor_type_t'
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*/
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lv_cursor_type_t lv_ta_get_cursor_type(lv_obj_t * ta);
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/**
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* Get the password mode attribute
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* @param ta pointer to a text area object
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* @return true: password mode is enabled, false: disabled
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*/
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bool lv_ta_get_pwd_mode(lv_obj_t * ta);
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/**
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* Get the one line configuration attribute
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* @param ta pointer to a text area object
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* @return true: one line configuration is enabled, false: disabled
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*/
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bool lv_ta_get_one_line(lv_obj_t * ta);
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/**
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* Get the scroll bar mode of a text area
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* @param ta pointer to a text area object
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* @return scrollbar mode from 'lv_page_sb_mode_t' enum
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*/
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static inline lv_sb_mode_t lv_ta_get_sb_mode(lv_obj_t * ta)
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{
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return lv_page_get_sb_mode(ta);
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}
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/**
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* Get a style of a text area
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* @param ta pointer to a text area object
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* @param type which style should be get
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* @return style pointer to a style
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*/
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lv_style_t * lv_ta_get_style(lv_obj_t *ta, lv_ta_style_t type);
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/*=====================
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* Other functions
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*====================*/
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/**
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* Move the cursor one character right
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* @param ta pointer to a text area object
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*/
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void lv_ta_cursor_right(lv_obj_t * ta);
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/**
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* Move the cursor one character left
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* @param ta pointer to a text area object
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*/
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void lv_ta_cursor_left(lv_obj_t * ta);
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/**
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* Move the cursor one line down
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* @param ta pointer to a text area object
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*/
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void lv_ta_cursor_down(lv_obj_t * ta);
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/**
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* Move the cursor one line up
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* @param ta pointer to a text area object
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*/
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void lv_ta_cursor_up(lv_obj_t * ta);
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/**********************
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* MACROS
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**********************/
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#endif /*USE_LV_TA_H*/
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif /*LV_TA_H*/
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