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				synced 2025-11-03 23:21:15 +00:00 
			
		
		
		
	Changed theme notifications to work with newly introduced reference counted connections. Closes #21265, Fixes #6145.
Probably fixes more theme notification related open issues, should check.
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					 2 changed files with 116 additions and 38 deletions
				
			
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			@ -39,26 +39,6 @@ void Theme::_emit_theme_changed() {
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	emit_changed();
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}
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void Theme::_ref_font(Ref<Font> p_sc) {
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	if (!font_refcount.has(p_sc)) {
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		font_refcount[p_sc] = 1;
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		p_sc->connect("changed", this, "_emit_theme_changed");
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	} else {
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		font_refcount[p_sc] += 1;
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	}
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}
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void Theme::_unref_font(Ref<Font> p_sc) {
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	ERR_FAIL_COND(!font_refcount.has(p_sc));
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	font_refcount[p_sc]--;
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	if (font_refcount[p_sc] == 0) {
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		p_sc->disconnect("changed", this, "_emit_theme_changed");
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		font_refcount.erase(p_sc);
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	}
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}
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bool Theme::_set(const StringName &p_name, const Variant &p_value) {
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	String sname = p_name;
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			@ -217,13 +197,13 @@ void Theme::set_default_theme_font(const Ref<Font> &p_default_font) {
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		return;
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	if (default_theme_font.is_valid()) {
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		_unref_font(default_theme_font);
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		default_theme_font->disconnect("changed", this, "_emit_theme_changed");
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	}
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	default_theme_font = p_default_font;
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	if (default_theme_font.is_valid()) {
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		_ref_font(default_theme_font);
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		default_theme_font->connect("changed", this, "_emit_theme_changed", varray(), CONNECT_REFERENCE_COUNTED);
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	}
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	_change_notify();
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			@ -263,8 +243,16 @@ void Theme::set_icon(const StringName &p_name, const StringName &p_type, const R
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	bool new_value = !icon_map.has(p_type) || !icon_map[p_type].has(p_name);
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	if (icon_map[p_type].has(p_name) && icon_map[p_type][p_name].is_valid()) {
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		icon_map[p_type][p_name]->disconnect("changed", this, "_emit_theme_changed");
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	}
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	icon_map[p_type][p_name] = p_icon;
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	if (p_icon.is_valid()) {
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		icon_map[p_type][p_name]->connect("changed", this, "_emit_theme_changed", varray(), CONNECT_REFERENCE_COUNTED);
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	}
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	if (new_value) {
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		_change_notify();
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		emit_changed();
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			@ -290,7 +278,12 @@ void Theme::clear_icon(const StringName &p_name, const StringName &p_type) {
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	ERR_FAIL_COND(!icon_map.has(p_type));
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	ERR_FAIL_COND(!icon_map[p_type].has(p_name));
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	if (icon_map[p_type][p_name].is_valid()) {
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		icon_map[p_type][p_name]->disconnect("changed", this, "_emit_theme_changed");
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	}
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	icon_map[p_type].erase(p_name);
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	_change_notify();
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	emit_changed();
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}
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			@ -358,8 +351,16 @@ void Theme::set_stylebox(const StringName &p_name, const StringName &p_type, con
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	bool new_value = !style_map.has(p_type) || !style_map[p_type].has(p_name);
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	if (style_map[p_type].has(p_name) && style_map[p_type][p_name].is_valid()) {
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		style_map[p_type][p_name]->disconnect("changed", this, "_emit_theme_changed");
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	}
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	style_map[p_type][p_name] = p_style;
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	if (p_style.is_valid()) {
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		style_map[p_type][p_name]->connect("changed", this, "_emit_theme_changed", varray(), CONNECT_REFERENCE_COUNTED);
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	}
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	if (new_value)
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		_change_notify();
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	emit_changed();
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			@ -385,7 +386,12 @@ void Theme::clear_stylebox(const StringName &p_name, const StringName &p_type) {
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	ERR_FAIL_COND(!style_map.has(p_type));
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	ERR_FAIL_COND(!style_map[p_type].has(p_name));
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	if (style_map[p_type][p_name].is_valid()) {
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		style_map[p_type][p_name]->disconnect("changed", this, "_emit_theme_changed");
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	}
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	style_map[p_type].erase(p_name);
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	_change_notify();
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	emit_changed();
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}
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			@ -416,15 +422,14 @@ void Theme::set_font(const StringName &p_name, const StringName &p_type, const R
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	bool new_value = !font_map.has(p_type) || !font_map[p_type].has(p_name);
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	if (!new_value) {
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		if (font_map[p_type][p_name].is_valid()) {
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			_unref_font(font_map[p_type][p_name]);
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		}
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	if (font_map[p_type][p_name].is_valid()) {
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		font_map[p_type][p_name]->disconnect("changed", this, "_emit_theme_changed");
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	}
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	font_map[p_type][p_name] = p_font;
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	if (p_font.is_valid()) {
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		_ref_font(p_font);
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		font_map[p_type][p_name]->connect("changed", this, "_emit_theme_changed", varray(), CONNECT_REFERENCE_COUNTED);
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	}
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	if (new_value) {
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			@ -452,8 +457,8 @@ void Theme::clear_font(const StringName &p_name, const StringName &p_type) {
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	ERR_FAIL_COND(!font_map.has(p_type));
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	ERR_FAIL_COND(!font_map[p_type].has(p_name));
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	if (font_map.has(p_type) && font_map[p_type].has(p_name) && font_map[p_type][p_name].is_valid()) {
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		_unref_font(font_map[p_type][p_name]);
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	if (font_map[p_type][p_name].is_valid()) {
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		font_map[p_type][p_name]->disconnect("changed", this, "_emit_theme_changed");
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	}
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	font_map[p_type].erase(p_name);
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			@ -570,15 +575,91 @@ void Theme::get_constant_list(StringName p_type, List<StringName> *p_list) const
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	}
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}
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void Theme::clear() {
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	//these need disconnecting
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	{
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		const StringName *K = NULL;
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		while ((K = icon_map.next(K))) {
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			const StringName *L = NULL;
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			while ((L = icon_map[*K].next(L))) {
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				icon_map[*K][*L]->disconnect("changed", this, "_emit_theme_changed");
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			}
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		}
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	}
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	{
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		const StringName *K = NULL;
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		while ((K = style_map.next(K))) {
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			const StringName *L = NULL;
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			while ((L = style_map[*K].next(L))) {
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				style_map[*K][*L]->disconnect("changed", this, "_emit_theme_changed");
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			}
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		}
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	}
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	{
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		const StringName *K = NULL;
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		while ((K = font_map.next(K))) {
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			const StringName *L = NULL;
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			while ((L = font_map[*K].next(L))) {
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				font_map[*K][*L]->disconnect("changed", this, "_emit_theme_changed");
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			}
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		}
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	}
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	icon_map.clear();
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	style_map.clear();
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	font_map.clear();
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	shader_map.clear();
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	color_map.clear();
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	constant_map.clear();
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	_change_notify();
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	emit_changed();
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}
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void Theme::copy_default_theme() {
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	Ref<Theme> default_theme = get_default();
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	icon_map = default_theme->icon_map;
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	style_map = default_theme->style_map;
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	font_map = default_theme->font_map;
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	//these need reconnecting, so add normally
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	{
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		const StringName *K = NULL;
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		while ((K = default_theme->icon_map.next(K))) {
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			const StringName *L = NULL;
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			while ((L = default_theme->icon_map[*K].next(L))) {
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				set_icon(*K, *L, default_theme->icon_map[*K][*L]);
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			}
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		}
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	}
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	{
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		const StringName *K = NULL;
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		while ((K = default_theme->style_map.next(K))) {
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			const StringName *L = NULL;
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			while ((L = default_theme->style_map[*K].next(L))) {
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				set_stylebox(*K, *L, default_theme->style_map[*K][*L]);
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			}
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		}
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	}
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	{
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		const StringName *K = NULL;
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		while ((K = default_theme->font_map.next(K))) {
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			const StringName *L = NULL;
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			while ((L = default_theme->font_map[*K].next(L))) {
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				set_font(*K, *L, default_theme->font_map[*K][*L]);
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			}
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		}
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	}
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	//these are ok to just copy
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	color_map = default_theme->color_map;
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	constant_map = default_theme->constant_map;
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	shader_map = default_theme->shader_map;
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	_change_notify();
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	emit_changed();
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}
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			@ -661,6 +742,8 @@ void Theme::_bind_methods() {
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	ClassDB::bind_method(D_METHOD("clear_constant", "name", "type"), &Theme::clear_constant);
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	ClassDB::bind_method(D_METHOD("get_constant_list", "type"), &Theme::_get_constant_list);
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	ClassDB::bind_method(D_METHOD("clear"), &Theme::clear);
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	ClassDB::bind_method(D_METHOD("set_default_font", "font"), &Theme::set_default_theme_font);
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	ClassDB::bind_method(D_METHOD("get_default_font"), &Theme::get_default_theme_font);
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			@ -47,12 +47,6 @@ class Theme : public Resource {
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	RES_BASE_EXTENSION("theme");
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	static Ref<Theme> default_theme;
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	//keep a reference count to font, so each time the font changes, we emit theme changed too
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	Map<Ref<Font>, int> font_refcount;
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	void _ref_font(Ref<Font> p_sc);
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	void _unref_font(Ref<Font> p_sc);
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	void _emit_theme_changed();
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	HashMap<StringName, HashMap<StringName, Ref<Texture> > > icon_map;
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			@ -190,6 +184,7 @@ public:
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	void get_type_list(List<StringName> *p_list) const;
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	void copy_default_theme();
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	void clear();
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	Theme();
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	~Theme();
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