int text_get_visible_lines(SpaceText *st, ARegion *ar, const char *str)
{
int i, j, start, end, max, lines, chars;
char ch;
max= wrap_width(st, ar);
lines= 1;
start= 0;
end= max;
for(i= 0, j= 0; str[j] != '\0'; j++) {
/* Mimic replacement of tabs */
ch= str[j];
if(ch=='\t') {
chars= st->tabnumber-i%st->tabnumber;
ch= ' ';
}
else chars= 1;
while(chars--) {
if(i-start >= max) {
lines++;
start= end;
end += max;
}
else if(ch==' ' || ch=='-') {
end= i+1;
}
i++;
}
}
return lines;
}
void wrap_offset_in_line(SpaceText *st, ARegion *ar, TextLine *linein, int cursin, int *offl, int *offc)
{
int i, j, start, end, chars, max, chop;
char ch;
*offl= *offc= 0;
if(!st->text) return;
if(!st->wordwrap) return;
max= wrap_width(st, ar);
start= 0;
end= max;
chop= 1;
*offc= 0;
for(i=0, j=0; linein->line[j]!='\0'; j++) {
/* Mimic replacement of tabs */
ch= linein->line[j];
if(ch=='\t') {
chars= st->tabnumber-i%st->tabnumber;
if(i<cursin) cursin += chars-1;
ch= ' ';
}
else
chars= 1;
while(chars--) {
if(i-start>=max) {
if(chop && i >= cursin) {
if (i==cursin) {
(*offl)++;
*offc -= end-start;
}
return;
}
(*offl)++;
*offc -= end-start;
start= end;
end += max;
chop= 1;
}
else if(ch==' ' || ch=='-') {
end = i+1;
chop= 0;
if(i >= cursin)
return;
}
i++;
}
}
}
int text_get_visible_lines(SpaceText *st, ARegion *ar, const char *str)
{
int i, j, start, end, max, lines, chars;
char ch;
max = wrap_width(st, ar);
lines = 1;
start = 0;
end = max;
for (i = 0, j = 0; str[j]; j += BLI_str_utf8_size_safe(str + j)) {
int columns = BLI_str_utf8_char_width_safe(str + j); /* = 1 for tab */
/* Mimic replacement of tabs */
ch = str[j];
if (ch == '\t') {
chars = st->tabnumber - i % st->tabnumber;
ch = ' ';
}
else {
chars = 1;
}
while (chars--) {
if (i + columns - start > max) {
lines++;
start = MIN2(end, i);
end += max;
}
else if (ch == ' ' || ch == '-') {
end = i + 1;
}
i += columns;
}
}
return lines;
}
/* cursin - mem, offc - view */
void wrap_offset_in_line(SpaceText *st, ARegion *ar, TextLine *linein, int cursin, int *offl, int *offc)
{
int i, j, start, end, chars, max, chop;
char ch;
*offl = *offc = 0;
if (!st->text) return;
if (!st->wordwrap) return;
max = wrap_width(st, ar);
start = 0;
end = max;
chop = 1;
*offc = 0;
cursin = txt_utf8_offset_to_column(linein->line, cursin);
for (i = 0, j = 0; linein->line[j]; j += BLI_str_utf8_size_safe(linein->line + j)) {
int columns = BLI_str_utf8_char_width_safe(linein->line + j); /* = 1 for tab */
/* Mimic replacement of tabs */
ch = linein->line[j];
if (ch == '\t') {
chars = st->tabnumber - i % st->tabnumber;
if (i < cursin) cursin += chars - 1;
ch = ' ';
}
else
chars = 1;
while (chars--) {
if (i + columns - start > max) {
end = MIN2(end, i);
if (chop && i >= cursin) {
if (i == cursin) {
(*offl)++;
*offc -= end - start;
}
return;
}
(*offl)++;
*offc -= end - start;
start = end;
end += max;
chop = 1;
}
else if (ch == ' ' || ch == '-') {
end = i + 1;
chop = 0;
if (i >= cursin)
return;
}
i += columns;
}
}
}
/* Sets (offl, offc) for transforming (line, curs) to its wrapped position */
void wrap_offset(SpaceText *st, ARegion *ar, TextLine *linein, int cursin, int *offl, int *offc)
{
Text *text;
TextLine *linep;
int i, j, start, end, max, chop;
char ch;
*offl = *offc = 0;
if (!st->text) return;
if (!st->wordwrap) return;
text = st->text;
/* Move pointer to first visible line (top) */
linep = text->lines.first;
i = st->top;
while (i > 0 && linep) {
int lines = text_get_visible_lines(st, ar, linep->line);
/* Line before top */
if (linep == linein) {
if (lines <= i)
/* no visible part of line */
return;
}
if (i - lines < 0) {
break;
}
else {
linep = linep->next;
(*offl) += lines - 1;
i -= lines;
}
}
max = wrap_width(st, ar);
cursin = txt_utf8_offset_to_column(linein->line, cursin);
while (linep) {
start = 0;
end = max;
chop = 1;
*offc = 0;
for (i = 0, j = 0; linep->line[j]; j += BLI_str_utf8_size_safe(linep->line + j)) {
int chars;
int columns = BLI_str_utf8_char_width_safe(linep->line + j); /* = 1 for tab */
/* Mimic replacement of tabs */
ch = linep->line[j];
if (ch == '\t') {
chars = st->tabnumber - i % st->tabnumber;
if (linep == linein && i < cursin) cursin += chars - 1;
ch = ' ';
}
else {
chars = 1;
}
while (chars--) {
if (i + columns - start > max) {
end = MIN2(end, i);
if (chop && linep == linein && i >= cursin) {
if (i == cursin) {
(*offl)++;
*offc -= end - start;
}
return;
}
(*offl)++;
*offc -= end - start;
start = end;
end += max;
chop = 1;
}
else if (ch == ' ' || ch == '-') {
end = i + 1;
chop = 0;
if (linep == linein && i >= cursin)
return;
}
i += columns;
}
}
if (linep == linein) break;
linep = linep->next;
}
}
/* Sets (offl, offc) for transforming (line, curs) to its wrapped position */
void wrap_offset(SpaceText *st, ARegion *ar, TextLine *linein, int cursin, int *offl, int *offc)
{
Text *text;
TextLine *linep;
int i, j, start, end, chars, max, chop;
char ch;
*offl= *offc= 0;
if(!st->text) return;
if(!st->wordwrap) return;
text= st->text;
/* Move pointer to first visible line (top) */
linep= text->lines.first;
i= st->top;
while(i>0 && linep) {
int lines= text_get_visible_lines(st, ar, linep->line);
/* Line before top */
if(linep == linein) {
if(lines <= i)
/* no visible part of line */
return;
}
if (i-lines<0) {
break;
} else {
linep= linep->next;
(*offl)+= lines-1;
i-= lines;
}
}
max= wrap_width(st, ar);
while(linep) {
start= 0;
end= max;
chop= 1;
chars= 0;
*offc= 0;
for(i=0, j=0; linep->line[j]!='\0'; j++) {
/* Mimic replacement of tabs */
ch= linep->line[j];
if(ch=='\t') {
chars= st->tabnumber-i%st->tabnumber;
if(linep==linein && i<cursin) cursin += chars-1;
ch= ' ';
}
else
chars= 1;
while(chars--) {
if(i-start>=max) {
if(chop && linep==linein && i >= cursin) {
if (i==cursin) {
(*offl)++;
*offc -= end-start;
}
return;
}
(*offl)++;
*offc -= end-start;
start= end;
end += max;
chop= 1;
}
else if(ch==' ' || ch=='-') {
end = i+1;
chop= 0;
if(linep==linein && i >= cursin)
return;
}
i++;
}
}
if(linep==linein) break;
linep= linep->next;
}
}
