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Improve line BiDi handling, prevent crash on recursive log updates.

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This commit is contained in:
bruvzg 2023-04-12 11:39:05 +03:00
parent 1433c98e9f
commit 282e4231c2
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GPG key ID: 7960FCF39844EC38
5 changed files with 54 additions and 10 deletions
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5
editor/editor_log.cpp
View file

@ -276,6 +276,11 @@ void EditorLog::_add_log_line(LogMessage &p_message, bool p_replace_previous) {
return;
}
if (unlikely(log->is_updating())) {
// The new message arrived during log RTL text processing/redraw (invalid BiDi control characters / font error), ignore it to avoid RTL data corruption.
return;
}
// Only add the message to the log if it passes the filters.
bool filter_active = type_filter_map[p_message.type]->is_active();
String search_text = search_box->get_text();

45
modules/text_server_adv/text_server_adv.cpp
View file

@ -4138,6 +4138,7 @@ RID TextServerAdvanced::_shaped_text_substr(const RID &p_shaped, int64_t p_start
new_sd->direction = sd->direction;
new_sd->custom_punct = sd->custom_punct;
new_sd->para_direction = sd->para_direction;
new_sd->base_para_direction = sd->base_para_direction;
for (int i = 0; i < TextServer::SPACING_MAX; i++) {
new_sd->extra_spacing[i] = sd->extra_spacing[i];
}
@ -4188,9 +4189,33 @@ bool TextServerAdvanced::_shape_substr(ShapedTextDataAdvanced *p_new_sd, const S
if (U_SUCCESS(err)) {
ubidi_setLine(p_sd->bidi_iter[ov], start, end, bidi_iter, &err);
if (U_FAILURE(err)) {
ubidi_close(bidi_iter);
bidi_iter = nullptr;
ERR_PRINT(vformat("BiDi reordering for the line failed: %s", u_errorName(err)));
// Line BiDi failed (string contains incompatible control characters), try full paragraph BiDi instead.
err = U_ZERO_ERROR;
const UChar *data = p_sd->utf16.get_data();
switch (static_cast<TextServer::Direction>(p_sd->bidi_override[ov].z)) {
case DIRECTION_LTR: {
ubidi_setPara(bidi_iter, data + start, end - start, UBIDI_LTR, nullptr, &err);
} break;
case DIRECTION_RTL: {
ubidi_setPara(bidi_iter, data + start, end - start, UBIDI_RTL, nullptr, &err);
} break;
case DIRECTION_INHERITED: {
ubidi_setPara(bidi_iter, data + start, end - start, p_sd->base_para_direction, nullptr, &err);
} break;
case DIRECTION_AUTO: {
UBiDiDirection direction = ubidi_getBaseDirection(data + start, end - start);
if (direction != UBIDI_NEUTRAL) {
ubidi_setPara(bidi_iter, data + start, end - start, direction, nullptr, &err);
} else {
ubidi_setPara(bidi_iter, data + start, end - start, p_sd->base_para_direction, nullptr, &err);
}
} break;
}
if (U_FAILURE(err)) {
ubidi_close(bidi_iter);
bidi_iter = nullptr;
ERR_PRINT(vformat("BiDi reordering for the line failed: %s", u_errorName(err)));
}
}
} else {
bidi_iter = nullptr;
@ -5619,25 +5644,25 @@ bool TextServerAdvanced::_shaped_text_shape(const RID &p_shaped) {
sd->script_iter = memnew(ScriptIterator(sd->text, 0, sd->text.length()));
}
int base_para_direction = UBIDI_DEFAULT_LTR;
sd->base_para_direction = UBIDI_DEFAULT_LTR;
switch (sd->direction) {
case DIRECTION_LTR: {
sd->para_direction = DIRECTION_LTR;
base_para_direction = UBIDI_LTR;
sd->base_para_direction = UBIDI_LTR;
} break;
case DIRECTION_RTL: {
sd->para_direction = DIRECTION_RTL;
base_para_direction = UBIDI_RTL;
sd->base_para_direction = UBIDI_RTL;
} break;
case DIRECTION_INHERITED:
case DIRECTION_AUTO: {
UBiDiDirection direction = ubidi_getBaseDirection(data, sd->utf16.length());
if (direction != UBIDI_NEUTRAL) {
sd->para_direction = (direction == UBIDI_RTL) ? DIRECTION_RTL : DIRECTION_LTR;
base_para_direction = direction;
sd->base_para_direction = direction;
} else {
sd->para_direction = DIRECTION_LTR;
base_para_direction = UBIDI_DEFAULT_LTR;
sd->base_para_direction = UBIDI_DEFAULT_LTR;
}
} break;
}
@ -5666,14 +5691,14 @@ bool TextServerAdvanced::_shaped_text_shape(const RID &p_shaped) {
ubidi_setPara(bidi_iter, data + start, end - start, UBIDI_RTL, nullptr, &err);
} break;
case DIRECTION_INHERITED: {
ubidi_setPara(bidi_iter, data + start, end - start, base_para_direction, nullptr, &err);
ubidi_setPara(bidi_iter, data + start, end - start, sd->base_para_direction, nullptr, &err);
} break;
case DIRECTION_AUTO: {
UBiDiDirection direction = ubidi_getBaseDirection(data + start, end - start);
if (direction != UBIDI_NEUTRAL) {
ubidi_setPara(bidi_iter, data + start, end - start, direction, nullptr, &err);
} else {
ubidi_setPara(bidi_iter, data + start, end - start, base_para_direction, nullptr, &err);
ubidi_setPara(bidi_iter, data + start, end - start, sd->base_para_direction, nullptr, &err);
}
} break;
}

1
modules/text_server_adv/text_server_adv.h
View file

@ -476,6 +476,7 @@ class TextServerAdvanced : public TextServerExtension {
/* Shaped data */
TextServer::Direction para_direction = DIRECTION_LTR; // Detected text direction.
int base_para_direction = UBIDI_DEFAULT_LTR;
bool valid = false; // String is shaped.
bool line_breaks_valid = false; // Line and word break flags are populated (and virtual zero width spaces inserted).
bool justification_ops_valid = false; // Virtual elongation glyphs are added to the string.

11
scene/gui/rich_text_label.cpp
View file

@ -2705,6 +2705,10 @@ bool RichTextLabel::is_ready() const {
return (main->first_invalid_line.load() == (int)main->lines.size() && main->first_resized_line.load() == (int)main->lines.size() && main->first_invalid_font_line.load() == (int)main->lines.size());
}
bool RichTextLabel::is_updating() const {
return updating.load() || validating.load();
}
void RichTextLabel::set_threaded(bool p_threaded) {
if (threaded != p_threaded) {
_stop_thread();
@ -2729,6 +2733,7 @@ bool RichTextLabel::_validate_line_caches() {
if (updating.load()) {
return false;
}
validating.store(true);
if (main->first_invalid_line.load() == (int)main->lines.size()) {
MutexLock data_lock(data_mutex);
Rect2 text_rect = _get_text_rect();
@ -2747,6 +2752,7 @@ bool RichTextLabel::_validate_line_caches() {
if (main->first_resized_line.load() == (int)main->lines.size()) {
vscroll->set_value(old_scroll);
validating.store(false);
return true;
}
@ -2798,8 +2804,10 @@ bool RichTextLabel::_validate_line_caches() {
if (fit_content) {
update_minimum_size();
}
validating.store(false);
return true;
}
validating.store(false);
stop_thread.store(false);
if (threaded) {
updating.store(true);
@ -2809,7 +2817,9 @@ bool RichTextLabel::_validate_line_caches() {
loading_started = OS::get_singleton()->get_ticks_msec();
return false;
} else {
updating.store(true);
_process_line_caches();
updating.store(false);
queue_redraw();
return true;
}
@ -5895,6 +5905,7 @@ RichTextLabel::RichTextLabel(const String &p_text) {
set_text(p_text);
updating.store(false);
validating.store(false);
stop_thread.store(false);
set_clip_contents(true);

2
scene/gui/rich_text_label.h
View file

@ -377,6 +377,7 @@ private:
bool threaded = false;
std::atomic<bool> stop_thread;
std::atomic<bool> updating;
std::atomic<bool> validating;
std::atomic<double> loaded;
uint64_t loading_started = 0;
@ -678,6 +679,7 @@ public:
void deselect();
bool is_ready() const;
bool is_updating() const;
void set_threaded(bool p_threaded);
bool is_threaded() const;