godot/scene/gui/subviewport_container.cpp

299 lines
9.1 KiB
C++

/**************************************************************************/
/* subviewport_container.cpp */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* 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/config/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 = ms.max(minsize);
}
return ms;
}
void SubViewportContainer::set_stretch(bool p_enable) {
if (stretch == p_enable) {
return;
}
stretch = p_enable;
recalc_force_viewport_sizes();
update_minimum_size();
queue_sort();
queue_redraw();
}
bool SubViewportContainer::is_stretch_enabled() const {
return stretch;
}
void SubViewportContainer::set_stretch_shrink(int p_shrink) {
ERR_FAIL_COND(p_shrink < 1);
if (shrink == p_shrink) {
return;
}
shrink = p_shrink;
recalc_force_viewport_sizes();
queue_redraw();
}
void SubViewportContainer::recalc_force_viewport_sizes() {
if (!stretch) {
return;
}
// If stretch is enabled, make sure that all child SubViwewports have the correct size.
for (int i = 0; i < get_child_count(); i++) {
SubViewport *c = Object::cast_to<SubViewport>(get_child(i));
if (!c) {
continue;
}
c->set_size_force(get_size() / shrink);
}
}
int SubViewportContainer::get_stretch_shrink() const {
return shrink;
}
Vector<int> SubViewportContainer::get_allowed_size_flags_horizontal() const {
return Vector<int>();
}
Vector<int> SubViewportContainer::get_allowed_size_flags_vertical() const {
return Vector<int>();
}
void SubViewportContainer::_notification(int p_what) {
switch (p_what) {
case NOTIFICATION_RESIZED: {
recalc_force_viewport_sizes();
} break;
case NOTIFICATION_ENTER_TREE:
case 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
}
} break;
case 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()));
}
}
} break;
case NOTIFICATION_FOCUS_ENTER: {
// If focused, send InputEvent to the SubViewport before the Gui-Input stage.
set_process_input(true);
set_process_unhandled_input(false);
} break;
case NOTIFICATION_FOCUS_EXIT: {
// A different Control has focus and should receive Gui-Input before the InputEvent is sent to the SubViewport.
set_process_input(false);
set_process_unhandled_input(true);
} break;
}
}
void SubViewportContainer::_notify_viewports(int p_notification) {
for (int i = 0; i < get_child_count(); i++) {
SubViewport *c = Object::cast_to<SubViewport>(get_child(i));
if (!c) {
continue;
}
c->notification(p_notification);
}
}
void SubViewportContainer::input(const Ref<InputEvent> &p_event) {
_propagate_nonpositional_event(p_event);
}
void SubViewportContainer::unhandled_input(const Ref<InputEvent> &p_event) {
_propagate_nonpositional_event(p_event);
}
void SubViewportContainer::_propagate_nonpositional_event(const Ref<InputEvent> &p_event) {
ERR_FAIL_COND(p_event.is_null());
if (Engine::get_singleton()->is_editor_hint()) {
return;
}
if (_is_propagated_in_gui_input(p_event)) {
return;
}
bool send;
if (GDVIRTUAL_CALL(_propagate_input_event, p_event, send)) {
if (!send) {
return;
}
}
_send_event_to_viewports(p_event);
}
void SubViewportContainer::gui_input(const Ref<InputEvent> &p_event) {
ERR_FAIL_COND(p_event.is_null());
if (Engine::get_singleton()->is_editor_hint()) {
return;
}
if (!_is_propagated_in_gui_input(p_event)) {
return;
}
bool send;
if (GDVIRTUAL_CALL(_propagate_input_event, p_event, send)) {
if (!send) {
return;
}
}
if (stretch && shrink > 1) {
Transform2D xform;
xform.scale(Vector2(1, 1) / shrink);
_send_event_to_viewports(p_event->xformed_by(xform));
} else {
_send_event_to_viewports(p_event);
}
}
void SubViewportContainer::_send_event_to_viewports(const Ref<InputEvent> &p_event) {
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->push_input(p_event);
}
}
bool SubViewportContainer::_is_propagated_in_gui_input(const Ref<InputEvent> &p_event) {
// Propagation of events with a position property happen in gui_input
// Propagation of other events happen in input
if (Object::cast_to<InputEventMouse>(*p_event) || Object::cast_to<InputEventScreenDrag>(*p_event) || Object::cast_to<InputEventScreenTouch>(*p_event) || Object::cast_to<InputEventGesture>(*p_event)) {
return true;
}
return false;
}
void SubViewportContainer::add_child_notify(Node *p_child) {
if (Object::cast_to<SubViewport>(p_child)) {
queue_redraw();
}
}
void SubViewportContainer::remove_child_notify(Node *p_child) {
if (Object::cast_to<SubViewport>(p_child)) {
queue_redraw();
}
}
PackedStringArray SubViewportContainer::get_configuration_warnings() const {
PackedStringArray warnings = Container::get_configuration_warnings();
bool has_viewport = false;
for (int i = 0; i < get_child_count(); i++) {
if (Object::cast_to<SubViewport>(get_child(i))) {
has_viewport = true;
break;
}
}
if (!has_viewport) {
warnings.push_back(RTR("This node doesn't have a SubViewport as child, so it can't display its intended content.\nConsider adding a SubViewport as a child to provide something displayable."));
}
if (get_default_cursor_shape() != Control::CURSOR_ARROW) {
warnings.push_back(RTR("The default mouse cursor shape of SubViewportContainer has no effect.\nConsider leaving it at its initial value `CURSOR_ARROW`."));
}
return warnings;
}
void SubViewportContainer::_bind_methods() {
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);
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "stretch"), "set_stretch", "is_stretch_enabled");
ADD_PROPERTY(PropertyInfo(Variant::INT, "stretch_shrink", PROPERTY_HINT_RANGE, "1,32,1,or_greater"), "set_stretch_shrink", "get_stretch_shrink");
GDVIRTUAL_BIND(_propagate_input_event, "event");
}
SubViewportContainer::SubViewportContainer() {
set_process_unhandled_input(true);
set_focus_mode(FOCUS_CLICK);
}