godot/scene/gui/popup.cpp
EricEzaM 73c7fb2118 PopupMenu rework and enhancements
Many scrolling behaviour improvements and the ability to limit popup size.
2020-09-01 17:56:38 +10:00

233 lines
6.7 KiB
C++

/*************************************************************************/
/* popup.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 "popup.h"
#include "core/engine.h"
#include "core/os/keyboard.h"
#include "scene/gui/panel.h"
void Popup::_input_from_window(const Ref<InputEvent> &p_event) {
Ref<InputEventKey> key = p_event;
if (key.is_valid() && key->is_pressed() && key->get_keycode() == KEY_ESCAPE) {
_close_pressed();
}
}
void Popup::_parent_focused() {
_close_pressed();
}
void Popup::_notification(int p_what) {
switch (p_what) {
case NOTIFICATION_VISIBILITY_CHANGED: {
if (is_visible()) {
parent_visible = get_parent_visible_window();
if (parent_visible) {
parent_visible->connect("focus_entered", callable_mp(this, &Popup::_parent_focused));
}
} else {
if (parent_visible) {
parent_visible->disconnect("focus_entered", callable_mp(this, &Popup::_parent_focused));
parent_visible = nullptr;
}
emit_signal("popup_hide");
}
} break;
case NOTIFICATION_EXIT_TREE: {
if (parent_visible) {
parent_visible->disconnect("focus_entered", callable_mp(this, &Popup::_parent_focused));
parent_visible = nullptr;
}
} break;
case NOTIFICATION_WM_CLOSE_REQUEST: {
_close_pressed();
} break;
}
}
void Popup::_close_pressed() {
Window *parent_window = parent_visible;
if (parent_visible) {
parent_visible->disconnect("focus_entered", callable_mp(this, &Popup::_parent_focused));
parent_visible = nullptr;
}
call_deferred("hide");
emit_signal("cancelled");
if (parent_window) {
//parent_window->grab_focus();
}
}
void Popup::set_as_minsize() {
set_size(get_contents_minimum_size());
}
void Popup::_bind_methods() {
ADD_SIGNAL(MethodInfo("popup_hide"));
}
Rect2i Popup::_popup_adjust_rect() const {
ERR_FAIL_COND_V(!is_inside_tree(), Rect2());
Rect2i parent = get_usable_parent_rect();
if (parent == Rect2i()) {
return Rect2i();
}
Rect2i current(get_position(), get_size());
if (current.position.x + current.size.x > parent.position.x + parent.size.x) {
current.position.x = parent.position.x + parent.size.x - current.size.x;
}
if (current.position.x < parent.position.x) {
current.position.x = parent.position.x;
}
if (current.position.y + current.size.y > parent.position.y + parent.size.y) {
current.position.y = parent.position.y + parent.size.y - current.size.y;
}
if (current.position.y < parent.position.y) {
current.position.y = parent.position.y;
}
if (current.size.y > parent.size.y) {
current.size.y = parent.size.y;
}
if (current.size.x > parent.size.x) {
current.size.x = parent.size.x;
}
// Early out if max size not set.
Size2i max_size = get_max_size();
if (max_size <= Size2()) {
return current;
}
if (current.size.x > max_size.x) {
current.size.x = max_size.x;
}
if (current.size.y > max_size.y) {
current.size.y = max_size.y;
}
return current;
}
Popup::Popup() {
parent_visible = nullptr;
set_wrap_controls(true);
set_visible(false);
set_transient(true);
set_flag(FLAG_BORDERLESS, true);
set_flag(FLAG_RESIZE_DISABLED, true);
connect("window_input", callable_mp(this, &Popup::_input_from_window));
}
Popup::~Popup() {
}
Size2 PopupPanel::_get_contents_minimum_size() const {
Ref<StyleBox> p = get_theme_stylebox("panel", get_class_name());
Size2 ms;
for (int i = 0; i < get_child_count(); i++) {
Control *c = Object::cast_to<Control>(get_child(i));
if (!c || c == panel) {
continue;
}
if (c->is_set_as_toplevel()) {
continue;
}
Size2 cms = c->get_combined_minimum_size();
ms.x = MAX(cms.x, ms.x);
ms.y = MAX(cms.y, ms.y);
}
return ms + p->get_minimum_size();
}
void PopupPanel::_update_child_rects() {
Ref<StyleBox> p = get_theme_stylebox("panel", get_class_name());
Vector2 cpos(p->get_offset());
Vector2 csize(get_size() - p->get_minimum_size());
for (int i = 0; i < get_child_count(); i++) {
Control *c = Object::cast_to<Control>(get_child(i));
if (!c) {
continue;
}
if (c->is_set_as_toplevel()) {
continue;
}
if (c == panel) {
c->set_position(Vector2());
c->set_size(get_size());
} else {
c->set_position(cpos);
c->set_size(csize);
}
}
}
void PopupPanel::_notification(int p_what) {
if (p_what == NOTIFICATION_THEME_CHANGED) {
panel->add_theme_style_override("panel", get_theme_stylebox("panel", get_class_name()));
} else if (p_what == NOTIFICATION_READY || p_what == NOTIFICATION_ENTER_TREE) {
panel->add_theme_style_override("panel", get_theme_stylebox("panel", get_class_name()));
_update_child_rects();
} else if (p_what == NOTIFICATION_WM_SIZE_CHANGED) {
_update_child_rects();
}
}
PopupPanel::PopupPanel() {
panel = memnew(Panel);
add_child(panel);
}