Merge pull request #41100 from bruvzg/ctl_text_server_interface

[Complex Text Layouts] Implement TextServer interface.

11 files changed, 180 insertions, 9 deletions

diff --git a/core/core_constants.cpp b/core/core_constants.cpp
index 57ea10c074..db22a9ecf6 100644
--- a/core/core_constants.cpp
+++ b/core/core_constants.cpp
@@ -128,6 +128,7 @@ void register_global_constants() {
 	BIND_CORE_ENUM_CONSTANT(HALIGN_LEFT);
 	BIND_CORE_ENUM_CONSTANT(HALIGN_CENTER);
 	BIND_CORE_ENUM_CONSTANT(HALIGN_RIGHT);
+	BIND_CORE_ENUM_CONSTANT(HALIGN_FILL);
 
 	BIND_CORE_ENUM_CONSTANT(VALIGN_TOP);
 	BIND_CORE_ENUM_CONSTANT(VALIGN_CENTER);
diff --git a/core/math/math_defs.h b/core/math/math_defs.h
index 5192722839..4d97f72ebf 100644
--- a/core/math/math_defs.h
+++ b/core/math/math_defs.h
@@ -73,7 +73,8 @@ enum Orientation {
 enum HAlign {
 	HALIGN_LEFT,
 	HALIGN_CENTER,
-	HALIGN_RIGHT
+	HALIGN_RIGHT,
+	HALIGN_FILL,
 };
 
 enum VAlign {
diff --git a/core/os/main_loop.cpp b/core/os/main_loop.cpp
index d29bcd011f..9252ba0840 100644
--- a/core/os/main_loop.cpp
+++ b/core/os/main_loop.cpp
@@ -47,6 +47,7 @@ void MainLoop::_bind_methods() {
 	BIND_CONSTANT(NOTIFICATION_APPLICATION_PAUSED);
 	BIND_CONSTANT(NOTIFICATION_APPLICATION_FOCUS_IN);
 	BIND_CONSTANT(NOTIFICATION_APPLICATION_FOCUS_OUT);
+	BIND_CONSTANT(NOTIFICATION_TEXT_SERVER_CHANGED);
 
 	ADD_SIGNAL(MethodInfo("on_request_permissions_result", PropertyInfo(Variant::STRING, "permission"), PropertyInfo(Variant::BOOL, "granted")));
 };
diff --git a/core/os/main_loop.h b/core/os/main_loop.h
index 8c46ad9b6a..7bc91fbb83 100644
--- a/core/os/main_loop.h
+++ b/core/os/main_loop.h
@@ -56,6 +56,7 @@ public:
 		NOTIFICATION_APPLICATION_PAUSED = 2015,
 		NOTIFICATION_APPLICATION_FOCUS_IN = 2016,
 		NOTIFICATION_APPLICATION_FOCUS_OUT = 2017,
+		NOTIFICATION_TEXT_SERVER_CHANGED = 2018,
 	};
 
 	virtual void init();
diff --git a/core/string/translation.cpp b/core/string/translation.cpp
index df8a26e5ce..7b8c28e2e2 100644
--- a/core/string/translation.cpp
+++ b/core/string/translation.cpp
@@ -34,6 +34,11 @@
 #include "core/io/resource_loader.h"
 #include "core/os/os.h"
 
+#ifdef TOOLS_ENABLED
+#include "editor/editor_settings.h"
+#include "main/main.h"
+#endif
+
 // ISO 639-1 language codes, with the addition of glibc locales with their
 // regional identifiers. This list must match the language names (in English)
 // of locale_names.
@@ -1214,6 +1219,22 @@ void TranslationServer::set_tool_translation(const Ref<Translation> &p_translati
 	tool_translation = p_translation;
 }
 
+Ref<Translation> TranslationServer::get_tool_translation() const {
+	return tool_translation;
+}
+
+String TranslationServer::get_tool_locale() {
+#ifdef TOOLS_ENABLED
+	if (TranslationServer::get_singleton()->get_tool_translation().is_valid() && (Engine::get_singleton()->is_editor_hint() || Main::is_project_manager())) {
+		return tool_translation->get_locale();
+	} else {
+#else
+	{
+#endif
+		return get_locale();
+	}
+}
+
 StringName TranslationServer::tool_translate(const StringName &p_message, const StringName &p_context) const {
 	if (tool_translation.is_valid()) {
 		StringName r = tool_translation->get_message(p_message, p_context);
diff --git a/core/string/translation.h b/core/string/translation.h
index 8d34f7997e..c7ffe4d065 100644
--- a/core/string/translation.h
+++ b/core/string/translation.h
@@ -110,7 +110,9 @@ public:
 	static String standardize_locale(const String &p_locale);
 	static String get_language_code(const String &p_locale);
 
+	String get_tool_locale();
 	void set_tool_translation(const Ref<Translation> &p_translation);
+	Ref<Translation> get_tool_translation() const;
 	StringName tool_translate(const StringName &p_message, const StringName &p_context = "") const;
 	StringName tool_translate_plural(const StringName &p_message, const StringName &p_message_plural, int p_n, const StringName &p_context = "") const;
 	void set_doc_translation(const Ref<Translation> &p_translation);
diff --git a/core/string/ustring.cpp b/core/string/ustring.cpp
index 213578485e..d630e987ea 100644
--- a/core/string/ustring.cpp
+++ b/core/string/ustring.cpp
@@ -209,7 +209,6 @@ void CharString::copy_from(const char *p_cstr) {
 /*  String                                                               */
 /*************************************************************************/
 
-//TODO: move to TextServer
 //kind of poor should be rewritten properly
 String String::word_wrap(int p_chars_per_line) const {
 	int from = 0;
@@ -4796,7 +4795,7 @@ Vector<uint8_t> String::to_utf16_buffer() const {
 	Char16String charstr = s->utf16();
 
 	Vector<uint8_t> retval;
-	size_t len = charstr.length() * 2;
+	size_t len = charstr.length() * sizeof(char16_t);
 	retval.resize(len);
 	uint8_t *w = retval.ptrw();
 	copymem(w, (const void *)charstr.ptr(), len);
@@ -4811,7 +4810,7 @@ Vector<uint8_t> String::to_utf32_buffer() const {
 	}
 
 	Vector<uint8_t> retval;
-	size_t len = s->length() * 4;
+	size_t len = s->length() * sizeof(char32_t);
 	retval.resize(len);
 	uint8_t *w = retval.ptrw();
 	copymem(w, (const void *)s->ptr(), len);
diff --git a/core/string/ustring.h b/core/string/ustring.h
index bfae16fe64..7ff78b2d86 100644
--- a/core/string/ustring.h
+++ b/core/string/ustring.h
@@ -28,8 +28,9 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
 
-#ifndef USTRING_H
-#define USTRING_H
+#ifndef USTRING_GODOT_H
+#define USTRING_GODOT_H
+// Note: Renamed to avoid conflict with ICU header with the same name.
 
 #include "core/templates/cowdata.h"
 #include "core/templates/vector.h"
@@ -555,4 +556,4 @@ _FORCE_INLINE_ Vector<String> sarray(P... p_args) {
 	return arr;
 }
 
-#endif // USTRING_H
+#endif // USTRING_GODOT_H
diff --git a/core/templates/hashfuncs.h b/core/templates/hashfuncs.h
index 86bb1b5228..1ed9ab1987 100644
--- a/core/templates/hashfuncs.h
+++ b/core/templates/hashfuncs.h
@@ -114,6 +114,24 @@ static inline uint32_t make_uint32_t(T p_in) {
 	return _u._u32;
 }
 
+static inline uint64_t hash_djb2_one_float_64(double p_in, uint64_t p_prev = 5381) {
+	union {
+		double d;
+		uint64_t i;
+	} u;
+
+	// Normalize +/- 0.0 and NaN values so they hash the same.
+	if (p_in == 0.0f) {
+		u.d = 0.0;
+	} else if (Math::is_nan(p_in)) {
+		u.d = Math_NAN;
+	} else {
+		u.d = p_in;
+	}
+
+	return ((p_prev << 5) + p_prev) + u.i;
+}
+
 static inline uint64_t hash_djb2_one_64(uint64_t p_in, uint64_t p_prev = 5381) {
 	return ((p_prev << 5) + p_prev) + p_in;
 }
diff --git a/core/templates/lru.h b/core/templates/lru.h
new file mode 100644
index 0000000000..d02c4337d1
--- /dev/null
+++ b/core/templates/lru.h
@@ -0,0 +1,126 @@
+/*************************************************************************/
+/*  lru.h                                                                */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#ifndef LRU_H
+#define LRU_H
+
+#include "core/math/math_funcs.h"
+#include "hash_map.h"
+#include "list.h"
+
+template <class TKey, class TData>
+class LRUCache {
+private:
+	struct Pair {
+		TKey key;
+		TData data;
+
+		Pair() {}
+		Pair(const TKey &p_key, const TData &p_data) :
+				key(p_key),
+				data(p_data) {
+		}
+	};
+
+	typedef typename List<Pair>::Element *Element;
+
+	List<Pair> _list;
+	HashMap<TKey, Element> _map;
+	size_t capacity;
+
+public:
+	const TData *insert(const TKey &p_key, const TData &p_value) {
+		Element *e = _map.getptr(p_key);
+		Element n = _list.push_front(Pair(p_key, p_value));
+
+		if (e) {
+			_list.erase(*e);
+			_map.erase(p_key);
+		}
+		_map[p_key] = _list.front();
+
+		while (_map.size() > capacity) {
+			Element d = _list.back();
+			_map.erase(d->get().key);
+			_list.pop_back();
+		}
+
+		return &n->get().data;
+	}
+
+	void clear() {
+		_map.clear();
+		_list.clear();
+	}
+
+	bool has(const TKey &p_key) const {
+		return _map.getptr(p_key);
+	}
+
+	const TData &get(const TKey &p_key) {
+		Element *e = _map.getptr(p_key);
+		CRASH_COND(!e);
+		_list.move_to_front(*e);
+		return (*e)->get().data;
+	};
+
+	const TData *getptr(const TKey &p_key) {
+		Element *e = _map.getptr(p_key);
+		if (!e) {
+			return nullptr;
+		} else {
+			_list.move_to_front(*e);
+			return &(*e)->get().data;
+		}
+	}
+
+	_FORCE_INLINE_ size_t get_capacity() const { return capacity; }
+
+	void set_capacity(size_t p_capacity) {
+		if (capacity > 0) {
+			capacity = p_capacity;
+			while (_map.size() > capacity) {
+				Element d = _list.back();
+				_map.erase(d->get().key);
+				_list.pop_back();
+			}
+		}
+	}
+
+	LRUCache() {
+		capacity = 64;
+	}
+
+	LRUCache(int p_capacity) {
+		capacity = p_capacity;
+	}
+};
+
+#endif
diff --git a/core/variant/variant_call.cpp b/core/variant/variant_call.cpp
index 13514b7b9f..214c424013 100644
--- a/core/variant/variant_call.cpp
+++ b/core/variant/variant_call.cpp
@@ -418,7 +418,7 @@ struct _VariantCall {
 		String s;
 		if (p_instance->size() > 0) {
 			const uint8_t *r = p_instance->ptr();
-			s.parse_utf16((const char16_t *)r, p_instance->size() / 2);
+			s.parse_utf16((const char16_t *)r, floor((double)p_instance->size() / (double)sizeof(char16_t)));
 		}
 		return s;
 	}
@@ -427,7 +427,7 @@ struct _VariantCall {
 		String s;
 		if (p_instance->size() > 0) {
 			const uint8_t *r = p_instance->ptr();
-			s = String((const char32_t *)r, p_instance->size() / 4);
+			s = String((const char32_t *)r, floor((double)p_instance->size() / (double)sizeof(char32_t)));
 		}
 		return s;
 	}