static void text_draw(
const SpaceText *st, const TextDrawContext *tdc,
char *str, int cshift, int maxwidth, int x, int y, const char *format)
{
const bool use_syntax = (st->showsyntax && format);
FlattenString fs;
int columns, size, n, w = 0, padding, amount = 0;
const char *in = NULL;
for (n = flatten_string(st, &fs, str), str = fs.buf; n > 0; n--) {
columns = BLI_str_utf8_char_width_safe(str);
size = BLI_str_utf8_size_safe(str);
if (!in) {
if (w >= cshift) {
padding = w - cshift;
in = str;
}
else if (format)
format++;
}
if (in) {
if (maxwidth && w + columns > cshift + maxwidth)
break;
amount++;
}
w += columns;
str += size;
}
if (!in) {
flatten_string_free(&fs);
return; /* String is shorter than shift or ends with a padding */
}
x += tdc->cwidth * padding;
if (use_syntax) {
int a, str_shift = 0;
char fmt_prev = 0xff;
for (a = 0; a < amount; a++) {
if (format[a] != fmt_prev) format_draw_color(fmt_prev = format[a]);
x += text_font_draw_character_utf8(tdc, x, y, in + str_shift);
str_shift += BLI_str_utf8_size_safe(in + str_shift);
}
}
else {
text_font_draw(tdc, x, y, in);
}
flatten_string_free(&fs);
}
int text_get_char_pos(SpaceText *st, const char *line, int cur)
{
int a = 0, i;
for (i = 0; i < cur && line[i]; i += BLI_str_utf8_size_safe(line + i)) {
if (line[i] == '\t')
a += st->tabnumber - a % st->tabnumber;
else
a += BLI_str_utf8_char_width_safe(line + i);
}
return a;
}
static void console_cursor_wrap_offset(const char *str, int width, int *row, int *column, const char *end)
{
int col;
for (; *str; str += BLI_str_utf8_size_safe(str)) {
col = BLI_str_utf8_char_width_safe(str);
if (*column + col > width) {
(*row)++;
*column = 0;
}
if (end && str >= end)
break;
*column += col;
}
return;
}
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;
}
/* warning: allocated memory for 'offsets' must be freed by caller */
static int console_wrap_offsets(const char *str, int len, int width, int *lines, int **offsets)
{
int i, end; /* column */
int j; /* mem */
*lines = 1;
*offsets = MEM_callocN(sizeof(**offsets) * (len * BLI_UTF8_WIDTH_MAX / MAX2(1, width - (BLI_UTF8_WIDTH_MAX - 1)) + 1),
"console_wrap_offsets");
(*offsets)[0] = 0;
for (i = 0, end = width, j = 0; j < len && str[j]; j += BLI_str_utf8_size_safe(str + j)) {
int columns = BLI_str_utf8_char_width_safe(str + j);
if (i + columns > end) {
(*offsets)[*lines] = j;
(*lines)++;
end = i + width;
}
i += columns;
}
return j; /* return actual length */
}
static int text_draw_wrapped(SpaceText *st, const char *str, int x, int y, int w, const char *format, int skip)
{
FlattenString fs;
int basex, lines;
int i, wrap, end, max, columns, padding; /* column */
int a, fstart, fpos; /* utf8 chars */
int mi, ma, mstart, mend; /* mem */
char fmt_prev = 0xff;
flatten_string(st, &fs, str);
str = fs.buf;
max = w / st->cwidth;
if (max < 8) max = 8;
basex = x;
lines = 1;
fpos = fstart = 0; mstart = 0;
mend = txt_utf8_forward_columns(str, max, &padding) - str;
end = wrap = max - padding;
for (i = 0, mi = 0; str[mi]; i += columns, mi += BLI_str_utf8_size_safe(str + mi)) {
columns = BLI_str_utf8_char_width_safe(str + mi);
if (i + columns > end) {
/* skip hidden part of line */
if (skip) {
skip--;
fstart = fpos; mstart = mend;
mend = txt_utf8_forward_columns(str + mend, max, &padding) - str;
end = (wrap += max - padding);
continue;
}
/* Draw the visible portion of text on the overshot line */
for (a = fstart, ma = mstart; ma < mend; a++, ma += BLI_str_utf8_size_safe(str + ma)) {
if (st->showsyntax && format) {
if (fmt_prev != format[a]) format_draw_color(fmt_prev = format[a]);
}
x += text_font_draw_character_utf8(st, x, y, str + ma);
fpos++;
}
y -= st->lheight_dpi + TXT_LINE_SPACING;
x = basex;
lines++;
fstart = fpos; mstart = mend;
mend = txt_utf8_forward_columns(str + mend, max, &padding) - str;
end = (wrap += max - padding);
if (y <= 0) break;
}
else if (str[mi] == ' ' || str[mi] == '-') {
wrap = i + 1; mend = mi + 1;
}
}
/* Draw the remaining text */
for (a = fstart, ma = mstart; str[ma] && y > 0; a++, ma += BLI_str_utf8_size_safe(str + ma)) {
if (st->showsyntax && format) {
if (fmt_prev != format[a]) format_draw_color(fmt_prev = format[a]);
}
x += text_font_draw_character_utf8(st, x, y, str + ma);
}
flatten_string_free(&fs);
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;
}
}
static int text_draw_wrapped(
const SpaceText *st, const TextDrawContext *tdc,
const char *str, int x, int y, int w, const char *format, int skip)
{
const bool use_syntax = (st->showsyntax && format);
FlattenString fs;
int basex, lines;
int i, wrap, end, max, columns, padding; /* column */
/* warning, only valid when 'use_syntax' is set */
int a, fstart, fpos; /* utf8 chars */
int mi, ma, mstart, mend; /* mem */
char fmt_prev = 0xff;
/* don't draw lines below this */
const int clip_min_y = -(int)(st->lheight_dpi - 1);
flatten_string(st, &fs, str);
str = fs.buf;
max = w / st->cwidth;
if (max < 8) max = 8;
basex = x;
lines = 1;
fpos = fstart = 0; mstart = 0;
mend = txt_utf8_forward_columns(str, max, &padding) - str;
end = wrap = max - padding;
for (i = 0, mi = 0; str[mi]; i += columns, mi += BLI_str_utf8_size_safe(str + mi)) {
columns = BLI_str_utf8_char_width_safe(str + mi);
if (i + columns > end) {
/* skip hidden part of line */
if (skip) {
skip--;
if (use_syntax) {
/* currently fpos only used when formatting */
fpos += BLI_strnlen_utf8(str + mstart, mend - mstart);
}
fstart = fpos; mstart = mend;
mend = txt_utf8_forward_columns(str + mend, max, &padding) - str;
end = (wrap += max - padding);
continue;
}
/* Draw the visible portion of text on the overshot line */
for (a = fstart, ma = mstart; ma < mend; a++, ma += BLI_str_utf8_size_safe(str + ma)) {
if (use_syntax) {
if (fmt_prev != format[a]) format_draw_color(fmt_prev = format[a]);
}
x += text_font_draw_character_utf8(tdc, x, y, str + ma);
fpos++;
}
y -= st->lheight_dpi + TXT_LINE_SPACING;
x = basex;
lines++;
fstart = fpos; mstart = mend;
mend = txt_utf8_forward_columns(str + mend, max, &padding) - str;
end = (wrap += max - padding);
if (y <= clip_min_y)
break;
}
else if (str[mi] == ' ' || str[mi] == '-') {
wrap = i + 1; mend = mi + 1;
}
}
/* Draw the remaining text */
for (a = fstart, ma = mstart; str[ma] && y > clip_min_y; a++, ma += BLI_str_utf8_size_safe(str + ma)) {
if (use_syntax) {
if (fmt_prev != format[a]) format_draw_color(fmt_prev = format[a]);
}
x += text_font_draw_character_utf8(tdc, x, y, str + ma);
}
flatten_string_free(&fs);
return lines;
}
