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[TextServer] Add function to change font, font size, and OpenType features without invalidating line break points, justification points, or recreating shaped text buffer.

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This commit is contained in:
bruvzg
2022-01-20 09:30:42 +02:00
parent 050908626f
commit 215bede6ff
22 changed files with 705 additions and 491 deletions
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40
scene/gui/label.cpp
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@ -82,9 +82,11 @@ void Label::_shape() {
Ref<StyleBox> style = get_theme_stylebox(SNAME("normal"), SNAME("Label"));
int width = (get_size().width - style->get_minimum_size().width);
if (dirty) {
if (dirty || font_dirty) {
String lang = (!language.is_empty()) ? language : TranslationServer::get_singleton()->get_tool_locale();
TS->shaped_text_clear(text_rid);
if (dirty) {
TS->shaped_text_clear(text_rid);
}
if (text_direction == Control::TEXT_DIRECTION_INHERITED) {
TS->shaped_text_set_direction(text_rid, is_layout_rtl() ? TextServer::DIRECTION_RTL : TextServer::DIRECTION_LTR);
} else {
@ -97,9 +99,17 @@ void Label::_shape() {
if (visible_chars >= 0 && visible_chars_behavior == VC_CHARS_BEFORE_SHAPING) {
text = text.substr(0, visible_chars);
}
TS->shaped_text_add_string(text_rid, text, font->get_rids(), font_size, opentype_features, lang);
if (dirty) {
TS->shaped_text_add_string(text_rid, text, font->get_rids(), font_size, opentype_features, lang);
} else {
int spans = TS->shaped_get_span_count(text_rid);
for (int i = 0; i < spans; i++) {
TS->shaped_set_span_update_font(text_rid, i, font->get_rids(), font_size, opentype_features);
}
}
TS->shaped_text_set_bidi_override(text_rid, structured_text_parser(st_parser, st_args, text));
dirty = false;
font_dirty = false;
lines_dirty = true;
}
@ -276,7 +286,7 @@ void Label::_notification(int p_what) {
RenderingServer::get_singleton()->canvas_item_set_clip(get_canvas_item(), true);
}
if (dirty || lines_dirty) {
if (dirty || font_dirty || lines_dirty) {
_shape();
}
@ -521,7 +531,7 @@ void Label::_notification(int p_what) {
}
if (p_what == NOTIFICATION_THEME_CHANGED) {
dirty = true;
font_dirty = true;
update();
}
if (p_what == NOTIFICATION_RESIZED) {
@ -531,7 +541,7 @@ void Label::_notification(int p_what) {
Size2 Label::get_minimum_size() const {
// don't want to mutable everything
if (dirty || lines_dirty) {
if (dirty || font_dirty || lines_dirty) {
const_cast<Label *>(this)->_shape();
}
@ -555,7 +565,7 @@ int Label::get_line_count() const {
if (!is_inside_tree()) {
return 1;
}
if (dirty || lines_dirty) {
if (dirty || font_dirty || lines_dirty) {
const_cast<Label *>(this)->_shape();
}
@ -630,7 +640,7 @@ void Label::set_text_direction(Control::TextDirection p_text_direction) {
ERR_FAIL_COND((int)p_text_direction < -1 || (int)p_text_direction > 3);
if (text_direction != p_text_direction) {
text_direction = p_text_direction;
dirty = true;
font_dirty = true;
update();
}
}
@ -638,7 +648,7 @@ void Label::set_text_direction(Control::TextDirection p_text_direction) {
void Label::set_structured_text_bidi_override(Control::StructuredTextParser p_parser) {
if (st_parser != p_parser) {
st_parser = p_parser;
dirty = true;
font_dirty = true;
update();
}
}
@ -649,7 +659,7 @@ Control::StructuredTextParser Label::get_structured_text_bidi_override() const {
void Label::set_structured_text_bidi_override_options(Array p_args) {
st_args = p_args;
dirty = true;
font_dirty = true;
update();
}
@ -663,7 +673,7 @@ Control::TextDirection Label::get_text_direction() const {
void Label::clear_opentype_features() {
opentype_features.clear();
dirty = true;
font_dirty = true;
update();
}
@ -671,7 +681,7 @@ void Label::set_opentype_feature(const String &p_name, int p_value) {
int32_t tag = TS->name_to_tag(p_name);
if (!opentype_features.has(tag) || (int)opentype_features[tag] != p_value) {
opentype_features[tag] = p_value;
dirty = true;
font_dirty = true;
update();
}
}
@ -798,7 +808,7 @@ int Label::get_max_lines_visible() const {
}
int Label::get_total_character_count() const {
if (dirty || lines_dirty) {
if (dirty || font_dirty || lines_dirty) {
const_cast<Label *>(this)->_shape();
}
@ -814,13 +824,13 @@ bool Label::_set(const StringName &p_name, const Variant &p_value) {
if (value == -1) {
if (opentype_features.has(tag)) {
opentype_features.erase(tag);
dirty = true;
font_dirty = true;
update();
}
} else {
if (!opentype_features.has(tag) || (int)opentype_features[tag] != value) {
opentype_features[tag] = value;
dirty = true;
font_dirty = true;
update();
}
}