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godot/scene/gui/option_button.cpp

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/*************************************************************************/
/* option_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 "option_button.h"
#include "core/string/print_string.h"
static const int NONE_SELECTED = -1;
Size2 OptionButton::get_minimum_size() const {
Size2 minsize;
if (fit_to_longest_item) {
minsize = _cached_size;
} else {
minsize = Button::get_minimum_size();
}
if (has_theme_icon(SNAME("arrow"))) {
const Size2 padding = get_theme_stylebox(SNAME("normal"))->get_minimum_size();
const Size2 arrow_size = Control::get_theme_icon(SNAME("arrow"))->get_size();
Size2 content_size = minsize - padding;
content_size.width += arrow_size.width + get_theme_constant(SNAME("h_separation"));
content_size.height = MAX(content_size.height, arrow_size.height);
minsize = content_size + padding;
}
return minsize;
}
void OptionButton::_notification(int p_what) {
switch (p_what) {
case NOTIFICATION_DRAW: {
if (!has_theme_icon(SNAME("arrow"))) {
return;
}
RID ci = get_canvas_item();
Ref<Texture2D> arrow = Control::get_theme_icon(SNAME("arrow"));
Color clr = Color(1, 1, 1);
if (get_theme_constant(SNAME("modulate_arrow"))) {
switch (get_draw_mode()) {
case DRAW_PRESSED:
clr = get_theme_color(SNAME("font_pressed_color"));
break;
case DRAW_HOVER:
clr = get_theme_color(SNAME("font_hover_color"));
break;
case DRAW_DISABLED:
clr = get_theme_color(SNAME("font_disabled_color"));
break;
default:
if (has_focus()) {
clr = get_theme_color(SNAME("font_focus_color"));
} else {
clr = get_theme_color(SNAME("font_color"));
}
}
}
Size2 size = get_size();
Point2 ofs;
if (is_layout_rtl()) {
ofs = Point2(get_theme_constant(SNAME("arrow_margin")), int(Math::abs((size.height - arrow->get_height()) / 2)));
} else {
ofs = Point2(size.width - arrow->get_width() - get_theme_constant(SNAME("arrow_margin")), int(Math::abs((size.height - arrow->get_height()) / 2)));
}
arrow->draw(ci, ofs, clr);
} break;
case NOTIFICATION_TRANSLATION_CHANGED:
case NOTIFICATION_LAYOUT_DIRECTION_CHANGED: {
popup->set_layout_direction((Window::LayoutDirection)get_layout_direction());
[[fallthrough]];
}
case NOTIFICATION_THEME_CHANGED: {
if (has_theme_icon(SNAME("arrow"))) {
if (is_layout_rtl()) {
_set_internal_margin(SIDE_LEFT, Control::get_theme_icon(SNAME("arrow"))->get_width());
_set_internal_margin(SIDE_RIGHT, 0.f);
} else {
_set_internal_margin(SIDE_LEFT, 0.f);
_set_internal_margin(SIDE_RIGHT, Control::get_theme_icon(SNAME("arrow"))->get_width());
}
}
_refresh_size_cache();
} break;
case NOTIFICATION_VISIBILITY_CHANGED: {
if (!is_visible_in_tree()) {
popup->hide();
}
} break;
}
}
bool OptionButton::_set(const StringName &p_name, const Variant &p_value) {
Vector<String> components = String(p_name).split("/", true, 2);
if (components.size() >= 2 && components[0] == "popup") {
String property = components[2];
if (property != "text" && property != "icon" && property != "id" && property != "disabled" && property != "separator") {
return false;
}
bool valid;
popup->set(String(p_name).trim_prefix("popup/"), p_value, &valid);
int idx = components[1].get_slice("_", 1).to_int();
if (idx == current) {
// Force refreshing currently displayed item.
current = NONE_SELECTED;
_select(idx, false);
}
if (property == "text" || property == "icon") {
_queue_refresh_cache();
}
return valid;
}
return false;
}
bool OptionButton::_get(const StringName &p_name, Variant &r_ret) const {
Vector<String> components = String(p_name).split("/", true, 2);
if (components.size() >= 2 && components[0] == "popup") {
String property = components[2];
if (property != "text" && property != "icon" && property != "id" && property != "disabled" && property != "separator") {
return false;
}
bool valid;
r_ret = popup->get(String(p_name).trim_prefix("popup/"), &valid);
return valid;
}
return false;
}
void OptionButton::_get_property_list(List<PropertyInfo> *p_list) const {
for (int i = 0; i < popup->get_item_count(); i++) {
p_list->push_back(PropertyInfo(Variant::STRING, vformat("popup/item_%d/text", i)));
PropertyInfo pi = PropertyInfo(Variant::OBJECT, vformat("popup/item_%d/icon", i), PROPERTY_HINT_RESOURCE_TYPE, "Texture2D");
pi.usage &= ~(popup->get_item_icon(i).is_null() ? PROPERTY_USAGE_STORAGE : 0);
p_list->push_back(pi);
pi = PropertyInfo(Variant::INT, vformat("popup/item_%d/id", i), PROPERTY_HINT_RANGE, "0,10,1,or_greater");
p_list->push_back(pi);
pi = PropertyInfo(Variant::BOOL, vformat("popup/item_%d/disabled", i));
pi.usage &= ~(!popup->is_item_disabled(i) ? PROPERTY_USAGE_STORAGE : 0);
p_list->push_back(pi);
pi = PropertyInfo(Variant::BOOL, vformat("popup/item_%d/separator", i));
pi.usage &= ~(!popup->is_item_separator(i) ? PROPERTY_USAGE_STORAGE : 0);
p_list->push_back(pi);
}
}
void OptionButton::_focused(int p_which) {
emit_signal(SNAME("item_focused"), p_which);
}
void OptionButton::_selected(int p_which) {
_select(p_which, true);
}
void OptionButton::pressed() {
Size2 size = get_size() * get_viewport()->get_canvas_transform().get_scale();
popup->set_position(get_screen_position() + Size2(0, size.height * get_global_transform().get_scale().y));
popup->set_size(Size2(size.width, 0));
// If not triggered by the mouse, start the popup with the checked item selected.
if (popup->get_item_count() > 0) {
if ((get_action_mode() == ActionMode::ACTION_MODE_BUTTON_PRESS && Input::get_singleton()->is_action_just_pressed("ui_accept")) ||
(get_action_mode() == ActionMode::ACTION_MODE_BUTTON_RELEASE && Input::get_singleton()->is_action_just_released("ui_accept"))) {
popup->set_current_index(current > -1 ? current : 0);
} else {
popup->scroll_to_item(current > -1 ? current : 0);
}
}
popup->popup();
}
void OptionButton::add_icon_item(const Ref<Texture2D> &p_icon, const String &p_label, int p_id) {
bool first_selectable = !has_selectable_items();
popup->add_icon_radio_check_item(p_icon, p_label, p_id);
if (first_selectable) {
select(get_item_count() - 1);
}
_queue_refresh_cache();
}
void OptionButton::add_item(const String &p_label, int p_id) {
bool first_selectable = !has_selectable_items();
popup->add_radio_check_item(p_label, p_id);
if (first_selectable) {
select(get_item_count() - 1);
}
_queue_refresh_cache();
}
void OptionButton::set_item_text(int p_idx, const String &p_text) {
popup->set_item_text(p_idx, p_text);
if (current == p_idx) {
set_text(p_text);
}
_queue_refresh_cache();
}
void OptionButton::set_item_icon(int p_idx, const Ref<Texture2D> &p_icon) {
popup->set_item_icon(p_idx, p_icon);
if (current == p_idx) {
set_icon(p_icon);
}
_queue_refresh_cache();
}
void OptionButton::set_item_id(int p_idx, int p_id) {
popup->set_item_id(p_idx, p_id);
}
void OptionButton::set_item_metadata(int p_idx, const Variant &p_metadata) {
popup->set_item_metadata(p_idx, p_metadata);
}
void OptionButton::set_item_tooltip(int p_idx, const String &p_tooltip) {
popup->set_item_tooltip(p_idx, p_tooltip);
}
void OptionButton::set_item_disabled(int p_idx, bool p_disabled) {
popup->set_item_disabled(p_idx, p_disabled);
}
String OptionButton::get_item_text(int p_idx) const {
return popup->get_item_text(p_idx);
}
Ref<Texture2D> OptionButton::get_item_icon(int p_idx) const {
return popup->get_item_icon(p_idx);
}
int OptionButton::get_item_id(int p_idx) const {
if (p_idx == NONE_SELECTED) {
return NONE_SELECTED;
}
return popup->get_item_id(p_idx);
}
int OptionButton::get_item_index(int p_id) const {
return popup->get_item_index(p_id);
}
Variant OptionButton::get_item_metadata(int p_idx) const {
return popup->get_item_metadata(p_idx);
}
String OptionButton::get_item_tooltip(int p_idx) const {
return popup->get_item_tooltip(p_idx);
}
bool OptionButton::is_item_disabled(int p_idx) const {
return popup->is_item_disabled(p_idx);
}
bool OptionButton::is_item_separator(int p_idx) const {
return popup->is_item_separator(p_idx);
}
void OptionButton::set_item_count(int p_count) {
ERR_FAIL_COND(p_count < 0);
int count_old = get_item_count();
if (p_count == count_old) {
return;
}
popup->set_item_count(p_count);
if (p_count > count_old) {
for (int i = count_old; i < p_count; i++) {
popup->set_item_as_radio_checkable(i, true);
}
}
_refresh_size_cache();
notify_property_list_changed();
}
bool OptionButton::has_selectable_items() const {
for (int i = 0; i < get_item_count(); i++) {
if (!is_item_disabled(i) && !is_item_separator(i)) {
return true;
}
}
return false;
}
int OptionButton::get_selectable_item(bool p_from_last) const {
if (!p_from_last) {
for (int i = 0; i < get_item_count(); i++) {
if (!is_item_disabled(i) && !is_item_separator(i)) {
return i;
}
}
} else {
for (int i = get_item_count() - 1; i >= 0; i--) {
if (!is_item_disabled(i) && !is_item_separator(i)) {
return i;
}
}
}
return -1;
}
int OptionButton::get_item_count() const {
return popup->get_item_count();
}
void OptionButton::set_fit_to_longest_item(bool p_fit) {
if (p_fit == fit_to_longest_item) {
return;
}
fit_to_longest_item = p_fit;
_refresh_size_cache();
}
bool OptionButton::is_fit_to_longest_item() const {
return fit_to_longest_item;
}
void OptionButton::add_separator(const String &p_text) {
popup->add_separator(p_text);
}
void OptionButton::clear() {
popup->clear();
set_text("");
current = NONE_SELECTED;
_refresh_size_cache();
}
void OptionButton::_select(int p_which, bool p_emit) {
if (p_which == current) {
return;
}
if (p_which == NONE_SELECTED) {
for (int i = 0; i < popup->get_item_count(); i++) {
popup->set_item_checked(i, false);
}
current = NONE_SELECTED;
set_text("");
set_icon(nullptr);
} else {
ERR_FAIL_INDEX(p_which, popup->get_item_count());
for (int i = 0; i < popup->get_item_count(); i++) {
popup->set_item_checked(i, i == p_which);
}
current = p_which;
set_text(popup->get_item_text(current));
set_icon(popup->get_item_icon(current));
}
if (is_inside_tree() && p_emit) {
emit_signal(SNAME("item_selected"), current);
}
}
void OptionButton::_select_int(int p_which) {
if (p_which < NONE_SELECTED || p_which >= popup->get_item_count()) {
return;
}
_select(p_which, false);
}
void OptionButton::_refresh_size_cache() {
cache_refresh_pending = false;
if (!fit_to_longest_item) {
return;
}
_cached_size = Vector2();
for (int i = 0; i < get_item_count(); i++) {
_cached_size = _cached_size.max(get_minimum_size_for_text_and_icon(get_item_text(i), get_item_icon(i)));
}
update_minimum_size();
}
void OptionButton::_queue_refresh_cache() {
if (cache_refresh_pending) {
return;
}
cache_refresh_pending = true;
callable_mp(this, &OptionButton::_refresh_size_cache).call_deferredp(nullptr, 0);
}
void OptionButton::select(int p_idx) {
_select(p_idx, false);
}
int OptionButton::get_selected() const {
return current;
}
int OptionButton::get_selected_id() const {
return get_item_id(current);
}
Variant OptionButton::get_selected_metadata() const {
int idx = get_selected();
if (idx < 0) {
return Variant();
}
return get_item_metadata(current);
}
void OptionButton::remove_item(int p_idx) {
popup->remove_item(p_idx);
if (current == p_idx) {
_select(NONE_SELECTED);
}
_queue_refresh_cache();
}
PopupMenu *OptionButton::get_popup() const {
return popup;
}
void OptionButton::get_translatable_strings(List<String> *p_strings) const {
popup->get_translatable_strings(p_strings);
}
void OptionButton::_validate_property(PropertyInfo &property) const {
if (property.name == "text" || property.name == "icon") {
property.usage = PROPERTY_USAGE_NONE;
}
}
void OptionButton::_bind_methods() {
ClassDB::bind_method(D_METHOD("add_item", "label", "id"), &OptionButton::add_item, DEFVAL(-1));
ClassDB::bind_method(D_METHOD("add_icon_item", "texture", "label", "id"), &OptionButton::add_icon_item, DEFVAL(-1));
ClassDB::bind_method(D_METHOD("set_item_text", "idx", "text"), &OptionButton::set_item_text);
ClassDB::bind_method(D_METHOD("set_item_icon", "idx", "texture"), &OptionButton::set_item_icon);
ClassDB::bind_method(D_METHOD("set_item_disabled", "idx", "disabled"), &OptionButton::set_item_disabled);
ClassDB::bind_method(D_METHOD("set_item_id", "idx", "id"), &OptionButton::set_item_id);
ClassDB::bind_method(D_METHOD("set_item_metadata", "idx", "metadata"), &OptionButton::set_item_metadata);
ClassDB::bind_method(D_METHOD("set_item_tooltip", "idx", "tooltip"), &OptionButton::set_item_tooltip);
ClassDB::bind_method(D_METHOD("get_item_text", "idx"), &OptionButton::get_item_text);
ClassDB::bind_method(D_METHOD("get_item_icon", "idx"), &OptionButton::get_item_icon);
ClassDB::bind_method(D_METHOD("get_item_id", "idx"), &OptionButton::get_item_id);
ClassDB::bind_method(D_METHOD("get_item_index", "id"), &OptionButton::get_item_index);
ClassDB::bind_method(D_METHOD("get_item_metadata", "idx"), &OptionButton::get_item_metadata);
ClassDB::bind_method(D_METHOD("get_item_tooltip", "idx"), &OptionButton::get_item_tooltip);
ClassDB::bind_method(D_METHOD("is_item_disabled", "idx"), &OptionButton::is_item_disabled);
ClassDB::bind_method(D_METHOD("is_item_separator", "idx"), &OptionButton::is_item_separator);
ClassDB::bind_method(D_METHOD("add_separator", "text"), &OptionButton::add_separator, DEFVAL(String()));
ClassDB::bind_method(D_METHOD("clear"), &OptionButton::clear);
ClassDB::bind_method(D_METHOD("select", "idx"), &OptionButton::select);
ClassDB::bind_method(D_METHOD("get_selected"), &OptionButton::get_selected);
ClassDB::bind_method(D_METHOD("get_selected_id"), &OptionButton::get_selected_id);
ClassDB::bind_method(D_METHOD("get_selected_metadata"), &OptionButton::get_selected_metadata);
ClassDB::bind_method(D_METHOD("remove_item", "idx"), &OptionButton::remove_item);
ClassDB::bind_method(D_METHOD("_select_int"), &OptionButton::_select_int);
ClassDB::bind_method(D_METHOD("get_popup"), &OptionButton::get_popup);
ClassDB::bind_method(D_METHOD("set_item_count", "count"), &OptionButton::set_item_count);
ClassDB::bind_method(D_METHOD("get_item_count"), &OptionButton::get_item_count);
ClassDB::bind_method(D_METHOD("has_selectable_items"), &OptionButton::has_selectable_items);
ClassDB::bind_method(D_METHOD("get_selectable_item", "from_last"), &OptionButton::get_selectable_item, DEFVAL(false));
ClassDB::bind_method(D_METHOD("set_fit_to_longest_item", "fit"), &OptionButton::set_fit_to_longest_item);
ClassDB::bind_method(D_METHOD("is_fit_to_longest_item"), &OptionButton::is_fit_to_longest_item);
// "selected" property must come after "item_count", otherwise GH-10213 occurs.
ADD_ARRAY_COUNT("Items", "item_count", "set_item_count", "get_item_count", "popup/item_");
ADD_PROPERTY(PropertyInfo(Variant::INT, "selected"), "_select_int", "get_selected");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "fit_to_longest_item"), "set_fit_to_longest_item", "is_fit_to_longest_item");
ADD_SIGNAL(MethodInfo("item_selected", PropertyInfo(Variant::INT, "index")));
ADD_SIGNAL(MethodInfo("item_focused", PropertyInfo(Variant::INT, "index")));
}
OptionButton::OptionButton(const String &p_text) :
Button(p_text) {
set_toggle_mode(true);
set_text_alignment(HORIZONTAL_ALIGNMENT_LEFT);
if (is_layout_rtl()) {
if (has_theme_icon(SNAME("arrow"))) {
_set_internal_margin(SIDE_LEFT, Control::get_theme_icon(SNAME("arrow"))->get_width());
}
} else {
if (has_theme_icon(SNAME("arrow"))) {
_set_internal_margin(SIDE_RIGHT, Control::get_theme_icon(SNAME("arrow"))->get_width());
}
}
set_action_mode(ACTION_MODE_BUTTON_PRESS);
popup = memnew(PopupMenu);
popup->hide();
add_child(popup, false, INTERNAL_MODE_FRONT);
popup->connect("index_pressed", callable_mp(this, &OptionButton::_selected));
popup->connect("id_focused", callable_mp(this, &OptionButton::_focused));
popup->connect("popup_hide", callable_mp((BaseButton *)this, &BaseButton::set_pressed).bind(false));
_refresh_size_cache();
}
OptionButton::~OptionButton() {
}
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