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Improve text line breaking performance for long lines.

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This commit is contained in:
bruvzg 2022-10-22 23:53:41 +03:00
parent 0e9878b12a
commit f0b7ff324c
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GPG Key ID: 7960FCF39844EC38
2 changed files with 52 additions and 19 deletions
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70
modules/text_server_adv/text_server_adv.cpp
View File

@ -4591,6 +4591,7 @@ bool TextServerAdvanced::_shaped_text_update_breaks(const RID &p_shaped) {
if (!sd->break_ops_valid) {
sd->breaks.clear();
sd->break_inserts = 0;
UErrorCode err = U_ZERO_ERROR;
int i = 0;
while (i < sd->spans.size()) {
@ -4619,6 +4620,11 @@ bool TextServerAdvanced::_shaped_text_update_breaks(const RID &p_shaped) {
sd->breaks[pos] = true;
} else if ((ubrk_getRuleStatus(bi) >= UBRK_LINE_SOFT) && (ubrk_getRuleStatus(bi) < UBRK_LINE_SOFT_LIMIT)) {
sd->breaks[pos] = false;
int pos_p = pos - 1 - sd->start;
if (pos - sd->start != sd->end && !is_whitespace(sd->text[pos_p])) {
sd->break_inserts++;
}
}
}
}
@ -4628,60 +4634,83 @@ bool TextServerAdvanced::_shaped_text_update_breaks(const RID &p_shaped) {
sd->break_ops_valid = true;
}
Vector<Glyph> glyphs_new;
bool rewrite = false;
int sd_shift = 0;
int sd_size = sd->glyphs.size();
Glyph *sd_glyphs = sd->glyphs.ptrw();
Glyph *sd_glyphs_new = nullptr;
if (sd->break_inserts > 0) {
glyphs_new.resize(sd->glyphs.size() + sd->break_inserts);
sd_glyphs_new = glyphs_new.ptrw();
rewrite = true;
} else {
sd_glyphs_new = sd_glyphs;
}
sd->sort_valid = false;
sd->glyphs_logical.clear();
int sd_size = sd->glyphs.size();
const char32_t *ch = sd->text.ptr();
Glyph *sd_glyphs = sd->glyphs.ptrw();
int c_punct_size = sd->custom_punct.length();
const char32_t *c_punct = sd->custom_punct.ptr();
for (int i = 0; i < sd_size; i++) {
if (rewrite) {
for (int j = 0; j < sd_glyphs[i].count; j++) {
sd_glyphs_new[sd_shift + i + j] = sd_glyphs[i + j];
}
}
if (sd_glyphs[i].count > 0) {
char32_t c = ch[sd_glyphs[i].start - sd->start];
if (c == 0xfffc) {
i += (sd_glyphs[i].count - 1);
continue;
}
if (c == 0x0009 || c == 0x000b) {
sd_glyphs[i].flags |= GRAPHEME_IS_TAB;
sd_glyphs_new[sd_shift + i].flags |= GRAPHEME_IS_TAB;
}
if (is_whitespace(c)) {
sd_glyphs[i].flags |= GRAPHEME_IS_SPACE;
sd_glyphs_new[sd_shift + i].flags |= GRAPHEME_IS_SPACE;
}
if (c_punct_size == 0) {
if (u_ispunct(c) && c != 0x005f) {
sd_glyphs[i].flags |= GRAPHEME_IS_PUNCTUATION;
sd_glyphs_new[sd_shift + i].flags |= GRAPHEME_IS_PUNCTUATION;
}
} else {
for (int j = 0; j < c_punct_size; j++) {
if (c_punct[j] == c) {
sd_glyphs[i].flags |= GRAPHEME_IS_PUNCTUATION;
sd_glyphs_new[sd_shift + i].flags |= GRAPHEME_IS_PUNCTUATION;
break;
}
}
}
if (is_underscore(c)) {
sd_glyphs[i].flags |= GRAPHEME_IS_UNDERSCORE;
sd_glyphs_new[sd_shift + i].flags |= GRAPHEME_IS_UNDERSCORE;
}
if (sd->breaks.has(sd_glyphs[i].end)) {
if (sd->breaks[sd_glyphs[i].end] && (is_linebreak(c))) {
sd_glyphs[i].flags |= GRAPHEME_IS_BREAK_HARD;
sd_glyphs_new[sd_shift + i].flags |= GRAPHEME_IS_BREAK_HARD;
} else if (is_whitespace(c)) {
sd_glyphs[i].flags |= GRAPHEME_IS_BREAK_SOFT;
sd_glyphs_new[sd_shift + i].flags |= GRAPHEME_IS_BREAK_SOFT;
} else {
int count = sd_glyphs[i].count;
// Do not add extra space at the end of the line.
if (sd_glyphs[i].end == sd->end) {
i += (sd_glyphs[i].count - 1);
continue;
}
// Do not add extra space after existing space.
if (sd_glyphs[i].flags & GRAPHEME_IS_RTL) {
if ((i + count < sd_size - 1) && ((sd_glyphs[i + count].flags & (GRAPHEME_IS_SPACE | GRAPHEME_IS_BREAK_SOFT)) == (GRAPHEME_IS_SPACE | GRAPHEME_IS_BREAK_SOFT))) {
i += (sd_glyphs[i].count - 1);
continue;
}
} else {
if ((i > 0) && ((sd_glyphs[i - 1].flags & (GRAPHEME_IS_SPACE | GRAPHEME_IS_BREAK_SOFT)) == (GRAPHEME_IS_SPACE | GRAPHEME_IS_BREAK_SOFT))) {
if ((sd_glyphs[i].flags & (GRAPHEME_IS_SPACE | GRAPHEME_IS_BREAK_SOFT)) == (GRAPHEME_IS_SPACE | GRAPHEME_IS_BREAK_SOFT)) {
i += (sd_glyphs[i].count - 1);
continue;
}
}
@ -4694,22 +4723,25 @@ bool TextServerAdvanced::_shaped_text_update_breaks(const RID &p_shaped) {
gl.flags = GRAPHEME_IS_BREAK_SOFT | GRAPHEME_IS_VIRTUAL | GRAPHEME_IS_SPACE;
if (sd_glyphs[i].flags & GRAPHEME_IS_RTL) {
gl.flags |= GRAPHEME_IS_RTL;
sd->glyphs.insert(i, gl); // Insert before.
for (int j = sd_glyphs[i].count - 1; j >= 0; j--) {
sd_glyphs_new[sd_shift + i + j + 1] = sd_glyphs_new[sd_shift + i + j];
}
sd_glyphs_new[sd_shift + i] = gl;
} else {
sd->glyphs.insert(i + count, gl); // Insert after.
sd_glyphs_new[sd_shift + i + count] = gl;
}
i += count;
// Update write pointer and size.
sd_size = sd->glyphs.size();
sd_glyphs = sd->glyphs.ptrw();
continue;
sd_shift++;
ERR_FAIL_COND_V_MSG(sd_shift > sd->break_inserts, false, "Invalid break insert count!");
}
}
i += (sd_glyphs[i].count - 1);
}
}
ERR_FAIL_COND_V_MSG(sd_shift != sd->break_inserts, false, "Invalid break insert count!");
if (sd->break_inserts > 0) {
sd->glyphs = glyphs_new;
}
sd->line_breaks_valid = true;

1
modules/text_server_adv/text_server_adv.h
View File

@ -450,6 +450,7 @@ class TextServerAdvanced : public TextServerExtension {
HashMap<int, bool> jstops;
HashMap<int, bool> breaks;
int break_inserts = 0;
bool break_ops_valid = false;
bool js_ops_valid = false;