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lv_label text_static and text_array added

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This commit is contained in:
Kiss-Vamosi Gabor
2016-12-30 21:42:59 +01:00
parent 72948cda48
commit 01e4a449c5
2 changed files with 192 additions and 127 deletions
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312
lv_objx/lv_label.c
View File

@@ -31,6 +31,7 @@
* STATIC PROTOTYPES
**********************/
static bool lv_label_design(lv_obj_t * label, const area_t * mask, lv_design_mode_t mode);
static void lv_label_refr_text(lv_obj_t * label);
static void lv_labels_init(void);
/**********************
@@ -81,8 +82,10 @@ lv_obj_t * lv_label_create(lv_obj_t * par, lv_obj_t * copy)
}
/*Copy 'copy' if not NULL*/
else {
lv_label_ext_t * copy_ext = lv_obj_get_ext(copy);
lv_label_set_long_mode(new_label, lv_label_get_long_mode(copy));
lv_label_set_text(new_label, lv_label_get_text(copy));
if(copy_ext->static_txt == 0) lv_label_set_text(new_label, lv_label_get_text(copy));
else lv_label_set_text_static(new_label, lv_label_get_text(copy));
}
return new_label;
}
@@ -104,12 +107,14 @@ bool lv_label_signal(lv_obj_t * label, lv_signal_t sign, void * param)
/* The object can be deleted so check its validity and then
* make the object specific signal handling */
if(valid != false) {
lv_label_ext_t * label_p = lv_obj_get_ext(label);
lv_label_ext_t * ext = lv_obj_get_ext(label);
/*No signal handling*/
switch(sign) {
case LV_SIGNAL_CLEANUP:
dm_free(label_p->txt);
label_p->txt = NULL;
if(ext->static_txt == 0) {
dm_free(ext->txt);
ext->txt = NULL;
}
break;
case LV_SIGNAL_STYLE_CHG:
lv_label_set_text(label, NULL);
@@ -128,9 +133,9 @@ bool lv_label_signal(lv_obj_t * label, lv_signal_t sign, void * param)
*====================*/
/**
* Set a new text for a label
* Set a new text for a label. Memory will be allocated to store the text by the label.
* @param label pointer to a label object
* @param text '\0' terminated character string. If NULL then refresh with the current text.
* @param text '\0' terminated character string. NULL to refresh with the current text.
*/
void lv_label_set_text(lv_obj_t * label, const char * text)
{
@@ -138,131 +143,74 @@ void lv_label_set_text(lv_obj_t * label, const char * text)
lv_label_ext_t * ext = lv_obj_get_ext(label);
/*If trying to set its own text then use NULL
* because NULL means text refresh*/
if(text == ext->txt) text = NULL;
/*If trying to set its own text or the text is NULL then refresh */
if(text == ext->txt || text == NULL) {
lv_label_refr_text(label);
return;
}
/*Allocate space for the new text*/
if(text != NULL) {
uint32_t len = strlen(text) + 1;
if(ext->txt != NULL) {
dm_free(ext->txt);
}
ext->txt = dm_alloc(len);
strcpy(ext->txt, text);
}
/*Do not allocate just use the current text*/
else {
text = ext->txt;
uint32_t len = strlen(text) + 1;
if(ext->txt != NULL && ext->static_txt == 0) {
dm_free(ext->txt);
}
ext->txt = dm_alloc(len);
strcpy(ext->txt, text);
ext->static_txt = 0; /*Now the text is dynamically allocated*/
/*If 'text" still NULL then nothing to do: return*/
if(text == NULL) return;
cord_t max_w = lv_obj_get_width(label);
lv_labels_t * style = lv_obj_get_style(label);
const font_t * font = font_get(style->font);
ext->dot_end = LV_LABEL_DOT_END_INV; /*Initialize the dot end index*/
/*If the width will be expanded set the max length to very big */
if(ext->long_mode == LV_LABEL_LONG_EXPAND || ext->long_mode == LV_LABEL_LONG_SCROLL) {
max_w = LV_CORD_MAX;
}
/*Calc. the height and longest line*/
point_t size;
txt_get_size(&size, ext->txt, font, style->letter_space, style->line_space, max_w);
/*Refresh the full size in expand mode*/
if(ext->long_mode == LV_LABEL_LONG_EXPAND || ext->long_mode == LV_LABEL_LONG_SCROLL) {
lv_obj_set_size(label, size.x, size.y);
/*Start scrolling if the label is greater then its parent*/
if(ext->long_mode == LV_LABEL_LONG_SCROLL) {
lv_obj_t * parent = lv_obj_get_parent(label);
/*Delete the potential previous scroller animations*/
anim_del(label, (anim_fp_t) lv_obj_set_x);
anim_del(label, (anim_fp_t) lv_obj_set_y);
anim_t anim;
anim.var = label;
anim.repeat = 1;
anim.playback = 1;
anim.start = font_get_width(font, ' ');
anim.act_time = 0;
anim.end_cb = NULL;
anim.path = anim_get_path(ANIM_PATH_LIN);
anim.time = 3000;
anim.playback_pause = LV_LABEL_SCROLL_PLAYBACK_PAUSE;
anim.repeat_pause = LV_LABEL_SCROLL_REPEAT_PAUSE;
bool hor_anim = false;
if(lv_obj_get_width(label) > lv_obj_get_width(parent)) {
anim.end = lv_obj_get_width(parent) - lv_obj_get_width(label) - font_get_width(font, ' ');
anim.fp = (anim_fp_t) lv_obj_set_x;
anim.time = anim_speed_to_time(LV_LABEL_SCROLL_SPEED, anim.start, anim.end);
anim_create(&anim);
hor_anim = true;
}
if(lv_obj_get_height(label) > lv_obj_get_height(parent)) {
anim.end = lv_obj_get_height(parent) - lv_obj_get_height(label) - font_get_height(font);
anim.fp = (anim_fp_t)lv_obj_set_y;
/*Different animation speed if horizontal animation is created too*/
if(hor_anim == false) {
anim.time = anim_speed_to_time(LV_LABEL_SCROLL_SPEED, anim.start, anim.end);
} else {
anim.time = anim_speed_to_time(LV_LABEL_SCROLL_SPEED_VER, anim.start, anim.end);
}
anim_create(&anim);
}
}
}
/*In break mode only the height can change*/
else if (ext->long_mode == LV_LABEL_LONG_BREAK) {
lv_obj_set_height(label, size.y);
}
/*Replace the last 'LV_LABEL_DOT_NUM' characters with dots
* and save these characters*/
else if(ext->long_mode == LV_LABEL_LONG_DOTS) {
point_t point;
point.x = lv_obj_get_width(label) - 1;
point.y = lv_obj_get_height(label) - 1;
uint16_t index = lv_label_get_letter_on(label, &point);
if(index < strlen(text) - 1) {
/* Change the last 'LV_LABEL_DOT_NUM' to dots
* (if there are at least 'LV_LABEL_DOT_NUM' characters*/
if(index > LV_LABEL_DOT_NUM) {
uint8_t i;
for(i = 0; i < LV_LABEL_DOT_NUM; i++) {
ext->dot_tmp[i] = ext->txt[index - LV_LABEL_DOT_NUM + i];
ext->txt[index - LV_LABEL_DOT_NUM + i] = '.';
}
/*The last character is '\0'*/
ext->dot_tmp[i] = ext->txt[index];
ext->txt[index] = '\0';
}
/*Else with short text change all characters to dots*/
else {
uint8_t i;
for(i = 0; i < LV_LABEL_DOT_NUM; i++) {
ext->txt[i] = '.';
}
ext->txt[i] = '\0';
}
/*Save the dot end index*/
ext->dot_end = index;
}
}
lv_label_refr_text(label);
}
/**
* Set a new text for a label from a character array. The array don't has to be '\0' terminated.
* Memory will be allocated to store the array by the label.
* @param label pointer to a label object
* @param array array of characters or NULL to refresh the label
* @param size the size of 'array' in bytes
*/
void lv_label_set_text_array(lv_obj_t * label, const char * array, uint16_t size)
{
lv_obj_inv(label);
lv_label_ext_t * ext = lv_obj_get_ext(label);
/*If trying to set its own text or the array is NULL then refresh */
if(array == ext->txt || array == NULL) {
lv_label_refr_text(label);
return;
}
/*Allocate space for the new text*/
if(ext->txt != NULL && ext->static_txt == 0) {
dm_free(ext->txt);
}
ext->txt = dm_alloc(size + 1);
memcpy(ext->txt, array, size);
ext->txt[size] = '\0';
ext->static_txt = 0; /*Now the text is dynamically allocated*/
lv_label_refr_text(label);
}
/**
* Set a static text. It will not be saved by the label so the 'text' variable
* has to be 'alive' while the label exist.
* @param label pointer to a label object
* @param text pointer to a text. NULL to refresh with the current text.
*/
void lv_label_set_text_static(lv_obj_t * label, const char * text)
{
lv_label_ext_t * ext = lv_obj_get_ext(label);
if(ext->static_txt == 0 && ext->txt != NULL) {
dm_free(ext->txt);
}
if(text != NULL) {
ext->static_txt = 1;
ext->txt = (char *) text;
}
lv_label_refr_text(label);
}
/**
* Set the behavior of the label with longer text then the object size
* @param label pointer to a label object
@@ -288,7 +236,7 @@ void lv_label_set_long_mode(lv_obj_t * label, lv_label_long_mode_t long_mode)
}
ext->long_mode = long_mode;
lv_label_set_text(label, NULL);
lv_label_refr_text(label);
}
/*=====================
@@ -503,6 +451,120 @@ static bool lv_label_design(lv_obj_t * label, const area_t * mask, lv_design_mod
return true;
}
/**
* Refresh the label with its text stored in its extended data
* @param label pointer to a label object
*/
static void lv_label_refr_text(lv_obj_t * label)
{
lv_label_ext_t * ext = lv_obj_get_ext(label);
if(ext->txt == NULL) return;
cord_t max_w = lv_obj_get_width(label);
lv_labels_t * style = lv_obj_get_style(label);
const font_t * font = font_get(style->font);
ext->dot_end = LV_LABEL_DOT_END_INV; /*Initialize the dot end index*/
/*If the width will be expanded set the max length to very big */
if(ext->long_mode == LV_LABEL_LONG_EXPAND || ext->long_mode == LV_LABEL_LONG_SCROLL) {
max_w = LV_CORD_MAX;
}
/*Calc. the height and longest line*/
point_t size;
txt_get_size(&size, ext->txt, font, style->letter_space, style->line_space, max_w);
/*Refresh the full size in expand mode*/
if(ext->long_mode == LV_LABEL_LONG_EXPAND || ext->long_mode == LV_LABEL_LONG_SCROLL) {
lv_obj_set_size(label, size.x, size.y);
/*Start scrolling if the label is greater then its parent*/
if(ext->long_mode == LV_LABEL_LONG_SCROLL) {
lv_obj_t * parent = lv_obj_get_parent(label);
/*Delete the potential previous scroller animations*/
anim_del(label, (anim_fp_t) lv_obj_set_x);
anim_del(label, (anim_fp_t) lv_obj_set_y);
anim_t anim;
anim.var = label;
anim.repeat = 1;
anim.playback = 1;
anim.start = font_get_width(font, ' ');
anim.act_time = 0;
anim.end_cb = NULL;
anim.path = anim_get_path(ANIM_PATH_LIN);
anim.time = 3000;
anim.playback_pause = LV_LABEL_SCROLL_PLAYBACK_PAUSE;
anim.repeat_pause = LV_LABEL_SCROLL_REPEAT_PAUSE;
bool hor_anim = false;
if(lv_obj_get_width(label) > lv_obj_get_width(parent)) {
anim.end = lv_obj_get_width(parent) - lv_obj_get_width(label) - font_get_width(font, ' ');
anim.fp = (anim_fp_t) lv_obj_set_x;
anim.time = anim_speed_to_time(LV_LABEL_SCROLL_SPEED, anim.start, anim.end);
anim_create(&anim);
hor_anim = true;
}
if(lv_obj_get_height(label) > lv_obj_get_height(parent)) {
anim.end = lv_obj_get_height(parent) - lv_obj_get_height(label) - font_get_height(font);
anim.fp = (anim_fp_t)lv_obj_set_y;
/*Different animation speed if horizontal animation is created too*/
if(hor_anim == false) {
anim.time = anim_speed_to_time(LV_LABEL_SCROLL_SPEED, anim.start, anim.end);
} else {
anim.time = anim_speed_to_time(LV_LABEL_SCROLL_SPEED_VER, anim.start, anim.end);
}
anim_create(&anim);
}
}
}
/*In break mode only the height can change*/
else if (ext->long_mode == LV_LABEL_LONG_BREAK) {
lv_obj_set_height(label, size.y);
}
/*Replace the last 'LV_LABEL_DOT_NUM' characters with dots
* and save these characters*/
else if(ext->long_mode == LV_LABEL_LONG_DOTS) {
point_t point;
point.x = lv_obj_get_width(label) - 1;
point.y = lv_obj_get_height(label) - 1;
uint16_t index = lv_label_get_letter_on(label, &point);
if(index < strlen(ext->txt) - 1) {
/* Change the last 'LV_LABEL_DOT_NUM' to dots
* (if there are at least 'LV_LABEL_DOT_NUM' characters*/
if(index > LV_LABEL_DOT_NUM) {
uint8_t i;
for(i = 0; i < LV_LABEL_DOT_NUM; i++) {
ext->dot_tmp[i] = ext->txt[index - LV_LABEL_DOT_NUM + i];
ext->txt[index - LV_LABEL_DOT_NUM + i] = '.';
}
/*The last character is '\0'*/
ext->dot_tmp[i] = ext->txt[index];
ext->txt[index] = '\0';
}
/*Else with short text change all characters to dots*/
else {
uint8_t i;
for(i = 0; i < LV_LABEL_DOT_NUM; i++) {
ext->txt[i] = '.';
}
ext->txt[i] = '\0';
}
/*Save the dot end index*/
ext->dot_end = index;
}
}
lv_obj_inv(label);
}
/**
* Initialize the label styles
*/

7
lv_objx/lv_label.h
View File

@@ -60,8 +60,9 @@ typedef struct
/*New data for this type */
char * txt;
lv_label_long_mode_t long_mode;
char dot_tmp[LV_LABEL_DOT_NUM + 10]; /*Store character which are replaced with dots*/
uint16_t dot_end; /*The text end in dot mode*/
char dot_tmp[LV_LABEL_DOT_NUM]; /*Store character which are replaced with dots*/
uint16_t dot_end; /* The text end in dot mode*/
uint8_t static_txt :1; /* Flag to indicate the text is static*/
}lv_label_ext_t;
/**********************
@@ -73,6 +74,8 @@ bool lv_label_signal(lv_obj_t * label, lv_signal_t sign, void * param);
lv_labels_t * lv_labels_get(lv_labels_builtin_t style, lv_labels_t * copy);
void lv_label_set_text(lv_obj_t * label, const char * text);
void lv_label_set_text_array(lv_obj_t * label, const char * array, uint16_t size);
void lv_label_set_text_static(lv_obj_t * label, const char * text);
void lv_label_set_long_mode(lv_obj_t * label, lv_label_long_mode_t long_mode);
const char * lv_label_get_text(lv_obj_t * label);
lv_label_long_mode_t lv_label_get_long_mode(lv_obj_t * label);