godot/scene/gui/subviewport_container.cpp

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/*************************************************************************/
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/* subviewport_container.cpp */
/*************************************************************************/
/* 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. */
/*************************************************************************/
#include "subviewport_container.h"
#include "core/engine.h"
#include "scene/main/viewport.h"
Size2 SubViewportContainer::get_minimum_size() const {
if (stretch) {
return Size2();
}
Size2 ms;
for (int i = 0; i < get_child_count(); i++) {
SubViewport *c = Object::cast_to<SubViewport>(get_child(i));
if (!c) {
continue;
}
Size2 minsize = c->get_size();
ms.width = MAX(ms.width, minsize.width);
ms.height = MAX(ms.height, minsize.height);
}
return ms;
}
void SubViewportContainer::set_stretch(bool p_enable) {
stretch = p_enable;
queue_sort();
update();
}
bool SubViewportContainer::is_stretch_enabled() const {
return stretch;
}
void SubViewportContainer::set_stretch_shrink(int p_shrink) {
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ERR_FAIL_COND(p_shrink < 1);
if (shrink == p_shrink) {
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return;
}
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shrink = p_shrink;
if (!stretch) {
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return;
}
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for (int i = 0; i < get_child_count(); i++) {
SubViewport *c = Object::cast_to<SubViewport>(get_child(i));
if (!c) {
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continue;
}
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c->set_size(get_size() / shrink);
}
update();
}
int SubViewportContainer::get_stretch_shrink() const {
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return shrink;
}
void SubViewportContainer::_notification(int p_what) {
if (p_what == NOTIFICATION_RESIZED) {
if (!stretch) {
return;
}
for (int i = 0; i < get_child_count(); i++) {
SubViewport *c = Object::cast_to<SubViewport>(get_child(i));
if (!c) {
continue;
}
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c->set_size(get_size() / shrink);
}
}
if (p_what == NOTIFICATION_ENTER_TREE || p_what == NOTIFICATION_VISIBILITY_CHANGED) {
for (int i = 0; i < get_child_count(); i++) {
SubViewport *c = Object::cast_to<SubViewport>(get_child(i));
if (!c) {
continue;
}
if (is_visible_in_tree()) {
c->set_update_mode(SubViewport::UPDATE_ALWAYS);
} else {
c->set_update_mode(SubViewport::UPDATE_DISABLED);
}
c->set_handle_input_locally(false); //do not handle input locally here
}
}
if (p_what == NOTIFICATION_DRAW) {
for (int i = 0; i < get_child_count(); i++) {
SubViewport *c = Object::cast_to<SubViewport>(get_child(i));
if (!c) {
continue;
}
if (stretch) {
draw_texture_rect(c->get_texture(), Rect2(Vector2(), get_size()));
} else {
draw_texture_rect(c->get_texture(), Rect2(Vector2(), c->get_size()));
}
}
}
}
void SubViewportContainer::_input(const Ref<InputEvent> &p_event) {
if (Engine::get_singleton()->is_editor_hint()) {
return;
}
Transform2D xform = get_global_transform();
if (stretch) {
Transform2D scale_xf;
scale_xf.scale(Vector2(shrink, shrink));
xform *= scale_xf;
}
Ref<InputEvent> ev = p_event->xformed_by(xform.affine_inverse());
for (int i = 0; i < get_child_count(); i++) {
SubViewport *c = Object::cast_to<SubViewport>(get_child(i));
if (!c || c->is_input_disabled()) {
continue;
}
c->input(ev);
}
}
void SubViewportContainer::_unhandled_input(const Ref<InputEvent> &p_event) {
if (Engine::get_singleton()->is_editor_hint()) {
return;
}
Transform2D xform = get_global_transform();
if (stretch) {
Transform2D scale_xf;
scale_xf.scale(Vector2(shrink, shrink));
xform *= scale_xf;
}
Ref<InputEvent> ev = p_event->xformed_by(xform.affine_inverse());
for (int i = 0; i < get_child_count(); i++) {
SubViewport *c = Object::cast_to<SubViewport>(get_child(i));
if (!c || c->is_input_disabled()) {
continue;
}
c->unhandled_input(ev);
}
}
void SubViewportContainer::_bind_methods() {
ClassDB::bind_method(D_METHOD("_unhandled_input", "event"), &SubViewportContainer::_unhandled_input);
ClassDB::bind_method(D_METHOD("_input", "event"), &SubViewportContainer::_input);
ClassDB::bind_method(D_METHOD("set_stretch", "enable"), &SubViewportContainer::set_stretch);
ClassDB::bind_method(D_METHOD("is_stretch_enabled"), &SubViewportContainer::is_stretch_enabled);
ClassDB::bind_method(D_METHOD("set_stretch_shrink", "amount"), &SubViewportContainer::set_stretch_shrink);
ClassDB::bind_method(D_METHOD("get_stretch_shrink"), &SubViewportContainer::get_stretch_shrink);
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ADD_PROPERTY(PropertyInfo(Variant::BOOL, "stretch"), "set_stretch", "is_stretch_enabled");
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ADD_PROPERTY(PropertyInfo(Variant::INT, "stretch_shrink"), "set_stretch_shrink", "get_stretch_shrink");
}
SubViewportContainer::SubViewportContainer() {
stretch = false;
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shrink = 1;
set_process_input(true);
set_process_unhandled_input(true);
}