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virtualx-engine/scene/gui/link_button.cpp
bruvzg c89c515ccf
[TextServer] Improve ligature cursor handling. 
Fix mid-grapheme hit test.
Fix OpenType features property handling, add default features override option.
Enable mid-grapheme cursor by default.
2022-01-09 19:03:48 +02:00

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/*************************************************************************/
/* link_button.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2022 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. */
/*************************************************************************/
#include "link_button.h"
#include "core/string/translation.h"
void LinkButton::_shape() {
Ref<Font> font = get_theme_font(SNAME("font"));
int font_size = get_theme_font_size(SNAME("font_size"));
text_buf->clear();
if (text_direction == Control::TEXT_DIRECTION_INHERITED) {
text_buf->set_direction(is_layout_rtl() ? TextServer::DIRECTION_RTL : TextServer::DIRECTION_LTR);
} else {
text_buf->set_direction((TextServer::Direction)text_direction);
}
TS->shaped_text_set_bidi_override(text_buf->get_rid(), structured_text_parser(st_parser, st_args, xl_text));
text_buf->add_string(xl_text, font, font_size, opentype_features, (!language.is_empty()) ? language : TranslationServer::get_singleton()->get_tool_locale());
}
void LinkButton::set_text(const String &p_text) {
if (text == p_text) {
return;
}
text = p_text;
xl_text = atr(text);
_shape();
update_minimum_size();
update();
}
String LinkButton::get_text() const {
return text;
}
void LinkButton::set_structured_text_bidi_override(Control::StructuredTextParser p_parser) {
if (st_parser != p_parser) {
st_parser = p_parser;
_shape();
update();
}
}
Control::StructuredTextParser LinkButton::get_structured_text_bidi_override() const {
return st_parser;
}
void LinkButton::set_structured_text_bidi_override_options(Array p_args) {
st_args = p_args;
_shape();
update();
}
Array LinkButton::get_structured_text_bidi_override_options() const {
return st_args;
}
void LinkButton::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;
_shape();
update();
}
}
Control::TextDirection LinkButton::get_text_direction() const {
return text_direction;
}
void LinkButton::clear_opentype_features() {
opentype_features.clear();
_shape();
update();
}
void LinkButton::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;
_shape();
update();
}
}
int LinkButton::get_opentype_feature(const String &p_name) const {
int32_t tag = TS->name_to_tag(p_name);
if (!opentype_features.has(tag)) {
return -1;
}
return opentype_features[tag];
}
void LinkButton::set_language(const String &p_language) {
if (language != p_language) {
language = p_language;
_shape();
update();
}
}
String LinkButton::get_language() const {
return language;
}
void LinkButton::set_underline_mode(UnderlineMode p_underline_mode) {
underline_mode = p_underline_mode;
update();
}
LinkButton::UnderlineMode LinkButton::get_underline_mode() const {
return underline_mode;
}
Size2 LinkButton::get_minimum_size() const {
return text_buf->get_size();
}
void LinkButton::_notification(int p_what) {
switch (p_what) {
case NOTIFICATION_TRANSLATION_CHANGED: {
xl_text = atr(text);
_shape();
update_minimum_size();
update();
} break;
case NOTIFICATION_LAYOUT_DIRECTION_CHANGED: {
update();
} break;
case NOTIFICATION_THEME_CHANGED: {
_shape();
update_minimum_size();
update();
} break;
case NOTIFICATION_DRAW: {
RID ci = get_canvas_item();
Size2 size = get_size();
Color color;
bool do_underline = false;
switch (get_draw_mode()) {
case DRAW_NORMAL: {
if (has_focus()) {
color = get_theme_color(SNAME("font_focus_color"));
} else {
color = get_theme_color(SNAME("font_color"));
}
do_underline = underline_mode == UNDERLINE_MODE_ALWAYS;
} break;
case DRAW_HOVER_PRESSED:
case DRAW_PRESSED: {
if (has_theme_color(SNAME("font_pressed_color"))) {
color = get_theme_color(SNAME("font_pressed_color"));
} else {
color = get_theme_color(SNAME("font_color"));
}
do_underline = underline_mode != UNDERLINE_MODE_NEVER;
} break;
case DRAW_HOVER: {
color = get_theme_color(SNAME("font_hover_color"));
do_underline = underline_mode != UNDERLINE_MODE_NEVER;
} break;
case DRAW_DISABLED: {
color = get_theme_color(SNAME("font_disabled_color"));
do_underline = underline_mode == UNDERLINE_MODE_ALWAYS;
} break;
}
if (has_focus()) {
Ref<StyleBox> style = get_theme_stylebox(SNAME("focus"));
style->draw(ci, Rect2(Point2(), size));
}
int width = text_buf->get_line_width();
Color font_outline_color = get_theme_color(SNAME("font_outline_color"));
int outline_size = get_theme_constant(SNAME("outline_size"));
if (is_layout_rtl()) {
if (outline_size > 0 && font_outline_color.a > 0) {
text_buf->draw_outline(get_canvas_item(), Vector2(size.width - width, 0), outline_size, font_outline_color);
}
text_buf->draw(get_canvas_item(), Vector2(size.width - width, 0), color);
} else {
if (outline_size > 0 && font_outline_color.a > 0) {
text_buf->draw_outline(get_canvas_item(), Vector2(0, 0), outline_size, font_outline_color);
}
text_buf->draw(get_canvas_item(), Vector2(0, 0), color);
}
if (do_underline) {
int underline_spacing = get_theme_constant(SNAME("underline_spacing")) + text_buf->get_line_underline_position();
int y = text_buf->get_line_ascent() + underline_spacing;
if (is_layout_rtl()) {
draw_line(Vector2(size.width - width, y), Vector2(size.width, y), color, text_buf->get_line_underline_thickness());
} else {
draw_line(Vector2(0, y), Vector2(width, y), color, text_buf->get_line_underline_thickness());
}
}
} break;
}
}
bool LinkButton::_set(const StringName &p_name, const Variant &p_value) {
String str = p_name;
if (str.begins_with("opentype_features/")) {
String name = str.get_slicec('/', 1);
int32_t tag = TS->name_to_tag(name);
int value = p_value;
if (value == -1) {
if (opentype_features.has(tag)) {
opentype_features.erase(tag);
_shape();
update();
}
} else {
if (!opentype_features.has(tag) || (int)opentype_features[tag] != value) {
opentype_features[tag] = value;
_shape();
update();
}
}
notify_property_list_changed();
return true;
}
return false;
}
bool LinkButton::_get(const StringName &p_name, Variant &r_ret) const {
String str = p_name;
if (str.begins_with("opentype_features/")) {
String name = str.get_slicec('/', 1);
int32_t tag = TS->name_to_tag(name);
if (opentype_features.has(tag)) {
r_ret = opentype_features[tag];
return true;
} else {
r_ret = -1;
return true;
}
}
return false;
}
void LinkButton::_get_property_list(List<PropertyInfo> *p_list) const {
for (const Variant *ftr = opentype_features.next(nullptr); ftr != nullptr; ftr = opentype_features.next(ftr)) {
String name = TS->tag_to_name(*ftr);
p_list->push_back(PropertyInfo(Variant::INT, "opentype_features/" + name));
}
p_list->push_back(PropertyInfo(Variant::NIL, "opentype_features/_new", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_EDITOR));
}
void LinkButton::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_text", "text"), &LinkButton::set_text);
ClassDB::bind_method(D_METHOD("get_text"), &LinkButton::get_text);
ClassDB::bind_method(D_METHOD("set_text_direction", "direction"), &LinkButton::set_text_direction);
ClassDB::bind_method(D_METHOD("get_text_direction"), &LinkButton::get_text_direction);
ClassDB::bind_method(D_METHOD("set_opentype_feature", "tag", "value"), &LinkButton::set_opentype_feature);
ClassDB::bind_method(D_METHOD("get_opentype_feature", "tag"), &LinkButton::get_opentype_feature);
ClassDB::bind_method(D_METHOD("clear_opentype_features"), &LinkButton::clear_opentype_features);
ClassDB::bind_method(D_METHOD("set_language", "language"), &LinkButton::set_language);
ClassDB::bind_method(D_METHOD("get_language"), &LinkButton::get_language);
ClassDB::bind_method(D_METHOD("set_underline_mode", "underline_mode"), &LinkButton::set_underline_mode);
ClassDB::bind_method(D_METHOD("get_underline_mode"), &LinkButton::get_underline_mode);
ClassDB::bind_method(D_METHOD("set_structured_text_bidi_override", "parser"), &LinkButton::set_structured_text_bidi_override);
ClassDB::bind_method(D_METHOD("get_structured_text_bidi_override"), &LinkButton::get_structured_text_bidi_override);
ClassDB::bind_method(D_METHOD("set_structured_text_bidi_override_options", "args"), &LinkButton::set_structured_text_bidi_override_options);
ClassDB::bind_method(D_METHOD("get_structured_text_bidi_override_options"), &LinkButton::get_structured_text_bidi_override_options);
BIND_ENUM_CONSTANT(UNDERLINE_MODE_ALWAYS);
BIND_ENUM_CONSTANT(UNDERLINE_MODE_ON_HOVER);
BIND_ENUM_CONSTANT(UNDERLINE_MODE_NEVER);
ADD_PROPERTY(PropertyInfo(Variant::STRING, "text"), "set_text", "get_text");
ADD_PROPERTY(PropertyInfo(Variant::INT, "text_direction", PROPERTY_HINT_ENUM, "Auto,Left-to-Right,Right-to-Left,Inherited"), "set_text_direction", "get_text_direction");
ADD_PROPERTY(PropertyInfo(Variant::STRING, "language"), "set_language", "get_language");
ADD_PROPERTY(PropertyInfo(Variant::INT, "underline", PROPERTY_HINT_ENUM, "Always,On Hover,Never"), "set_underline_mode", "get_underline_mode");
ADD_GROUP("Structured Text", "structured_text_");
ADD_PROPERTY(PropertyInfo(Variant::INT, "structured_text_bidi_override", PROPERTY_HINT_ENUM, "Default,URI,File,Email,List,None,Custom"), "set_structured_text_bidi_override", "get_structured_text_bidi_override");
ADD_PROPERTY(PropertyInfo(Variant::ARRAY, "structured_text_bidi_override_options"), "set_structured_text_bidi_override_options", "get_structured_text_bidi_override_options");
}
LinkButton::LinkButton() {
text_buf.instantiate();
set_focus_mode(FOCUS_NONE);
set_default_cursor_shape(CURSOR_POINTING_HAND);
}
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