godot/scene/gui/option_button.cpp
2021-09-17 16:00:42 +02:00

362 lines
12 KiB
C++

/*************************************************************************/
/* option_button.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 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"
Size2 OptionButton::get_minimum_size() const {
Size2 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("hseparation"));
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:
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:
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());
}
}
} break;
case NOTIFICATION_VISIBILITY_CHANGED: {
if (!is_visible_in_tree()) {
popup->hide();
}
} break;
}
}
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));
popup->popup();
}
void OptionButton::add_icon_item(const Ref<Texture2D> &p_icon, const String &p_label, int p_id) {
popup->add_icon_radio_check_item(p_icon, p_label, p_id);
if (popup->get_item_count() == 1) {
select(0);
}
}
void OptionButton::add_item(const String &p_label, int p_id) {
popup->add_radio_check_item(p_label, p_id);
if (popup->get_item_count() == 1) {
select(0);
}
}
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);
}
}
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);
}
}
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_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 {
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);
}
bool OptionButton::is_item_disabled(int p_idx) const {
return popup->is_item_disabled(p_idx);
}
int OptionButton::get_item_count() const {
return popup->get_item_count();
}
void OptionButton::add_separator() {
popup->add_separator();
}
void OptionButton::clear() {
popup->clear();
set_text("");
current = -1;
}
void OptionButton::_select(int p_which, bool p_emit) {
if (p_which < 0) {
return;
}
if (p_which == current) {
return;
}
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 < 0 || p_which >= popup->get_item_count()) {
return;
}
_select(p_which, false);
}
void OptionButton::select(int p_idx) {
_select(p_idx, false);
}
int OptionButton::get_selected() const {
return current;
}
int OptionButton::get_selected_id() const {
int idx = get_selected();
if (idx < 0) {
return 0;
}
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);
}
PopupMenu *OptionButton::get_popup() const {
return popup;
}
Array OptionButton::_get_items() const {
Array items;
for (int i = 0; i < get_item_count(); i++) {
items.push_back(get_item_text(i));
items.push_back(get_item_icon(i));
items.push_back(is_item_disabled(i));
items.push_back(get_item_id(i));
items.push_back(get_item_metadata(i));
}
return items;
}
void OptionButton::_set_items(const Array &p_items) {
ERR_FAIL_COND(p_items.size() % 5);
clear();
for (int i = 0; i < p_items.size(); i += 5) {
String text = p_items[i + 0];
Ref<Texture2D> icon = p_items[i + 1];
bool disabled = p_items[i + 2];
int id = p_items[i + 3];
Variant meta = p_items[i + 4];
int idx = get_item_count();
add_item(text, id);
set_item_icon(idx, icon);
set_item_disabled(idx, disabled);
set_item_metadata(idx, meta);
}
}
void OptionButton::get_translatable_strings(List<String> *p_strings) const {
popup->get_translatable_strings(p_strings);
}
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("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("is_item_disabled", "idx"), &OptionButton::is_item_disabled);
ClassDB::bind_method(D_METHOD("get_item_count"), &OptionButton::get_item_count);
ClassDB::bind_method(D_METHOD("add_separator"), &OptionButton::add_separator);
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_items"), &OptionButton::_set_items);
ClassDB::bind_method(D_METHOD("_get_items"), &OptionButton::_get_items);
ADD_PROPERTY(PropertyInfo(Variant::ARRAY, "items", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NOEDITOR | PROPERTY_USAGE_INTERNAL), "_set_items", "_get_items");
// "selected" property must come after "items", otherwise GH-10213 occurs.
ADD_PROPERTY(PropertyInfo(Variant::INT, "selected"), "_select_int", "get_selected");
ADD_SIGNAL(MethodInfo("item_selected", PropertyInfo(Variant::INT, "index")));
ADD_SIGNAL(MethodInfo("item_focused", PropertyInfo(Variant::INT, "index")));
}
OptionButton::OptionButton() {
set_toggle_mode(true);
set_text_align(ALIGN_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), varray(false));
}
OptionButton::~OptionButton() {
}