475 lines
13 KiB
C++
475 lines
13 KiB
C++
/*************************************************************************/
|
|
/* scroll_container.cpp */
|
|
/*************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* http://www.godotengine.org */
|
|
/*************************************************************************/
|
|
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
|
|
/* Copyright (c) 2014-2017 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 "scroll_container.h"
|
|
#include "os/os.h"
|
|
bool ScrollContainer::clips_input() const {
|
|
|
|
return true;
|
|
}
|
|
|
|
Size2 ScrollContainer::get_minimum_size() const {
|
|
|
|
Size2 min_size;
|
|
|
|
for (int i = 0; i < get_child_count(); i++) {
|
|
|
|
Control *c = get_child(i)->cast_to<Control>();
|
|
if (!c)
|
|
continue;
|
|
if (c->is_set_as_toplevel())
|
|
continue;
|
|
if (c == h_scroll || c == v_scroll)
|
|
continue;
|
|
Size2 minsize = c->get_combined_minimum_size();
|
|
|
|
if (!scroll_h) {
|
|
min_size.x = MAX(min_size.x, minsize.x);
|
|
}
|
|
if (!scroll_v) {
|
|
min_size.y = MAX(min_size.y, minsize.y);
|
|
}
|
|
}
|
|
|
|
if (h_scroll->is_visible_in_tree()) {
|
|
min_size.y += h_scroll->get_minimum_size().y;
|
|
}
|
|
if (v_scroll->is_visible_in_tree()) {
|
|
min_size.x += v_scroll->get_minimum_size().x;
|
|
}
|
|
return min_size;
|
|
};
|
|
|
|
void ScrollContainer::_cancel_drag() {
|
|
set_fixed_process(false);
|
|
drag_touching_deaccel = false;
|
|
drag_touching = false;
|
|
drag_speed = Vector2();
|
|
drag_accum = Vector2();
|
|
last_drag_accum = Vector2();
|
|
drag_from = Vector2();
|
|
}
|
|
|
|
void ScrollContainer::_gui_input(const InputEvent &p_gui_input) {
|
|
|
|
switch (p_gui_input.type) {
|
|
|
|
case InputEvent::MOUSE_BUTTON: {
|
|
|
|
const InputEventMouseButton &mb = p_gui_input.mouse_button;
|
|
|
|
if (mb.button_index == BUTTON_WHEEL_UP && mb.pressed) {
|
|
if (h_scroll->is_visible_in_tree() && !v_scroll->is_visible_in_tree()) {
|
|
// only horizontal is enabled, scroll horizontally
|
|
h_scroll->set_value(h_scroll->get_value() - h_scroll->get_page() / 8);
|
|
} else if (v_scroll->is_visible_in_tree()) {
|
|
v_scroll->set_value(v_scroll->get_value() - v_scroll->get_page() / 8);
|
|
}
|
|
}
|
|
|
|
if (mb.button_index == BUTTON_WHEEL_DOWN && mb.pressed) {
|
|
if (h_scroll->is_visible_in_tree() && !v_scroll->is_visible_in_tree()) {
|
|
// only horizontal is enabled, scroll horizontally
|
|
h_scroll->set_value(h_scroll->get_value() + h_scroll->get_page() / 8);
|
|
} else if (v_scroll->is_visible_in_tree()) {
|
|
v_scroll->set_value(v_scroll->get_value() + v_scroll->get_page() / 8);
|
|
}
|
|
}
|
|
|
|
if (!OS::get_singleton()->has_touchscreen_ui_hint())
|
|
return;
|
|
|
|
if (mb.button_index != BUTTON_LEFT)
|
|
break;
|
|
|
|
if (mb.pressed) {
|
|
|
|
if (drag_touching) {
|
|
set_fixed_process(false);
|
|
drag_touching_deaccel = false;
|
|
drag_touching = false;
|
|
drag_speed = Vector2();
|
|
drag_accum = Vector2();
|
|
last_drag_accum = Vector2();
|
|
drag_from = Vector2();
|
|
}
|
|
|
|
if (true) {
|
|
drag_speed = Vector2();
|
|
drag_accum = Vector2();
|
|
last_drag_accum = Vector2();
|
|
drag_from = Vector2(h_scroll->get_value(), v_scroll->get_value());
|
|
drag_touching = OS::get_singleton()->has_touchscreen_ui_hint();
|
|
drag_touching_deaccel = false;
|
|
time_since_motion = 0;
|
|
if (drag_touching) {
|
|
set_fixed_process(true);
|
|
time_since_motion = 0;
|
|
}
|
|
}
|
|
|
|
} else {
|
|
if (drag_touching) {
|
|
|
|
if (drag_speed == Vector2()) {
|
|
drag_touching_deaccel = false;
|
|
drag_touching = false;
|
|
set_fixed_process(false);
|
|
} else {
|
|
|
|
drag_touching_deaccel = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
} break;
|
|
case InputEvent::MOUSE_MOTION: {
|
|
|
|
const InputEventMouseMotion &mm = p_gui_input.mouse_motion;
|
|
|
|
if (drag_touching && !drag_touching_deaccel) {
|
|
|
|
Vector2 motion = Vector2(mm.relative_x, mm.relative_y);
|
|
drag_accum -= motion;
|
|
Vector2 diff = drag_from + drag_accum;
|
|
|
|
if (scroll_h)
|
|
h_scroll->set_value(diff.x);
|
|
else
|
|
drag_accum.x = 0;
|
|
if (scroll_v)
|
|
v_scroll->set_value(diff.y);
|
|
else
|
|
drag_accum.y = 0;
|
|
time_since_motion = 0;
|
|
}
|
|
|
|
} break;
|
|
}
|
|
}
|
|
|
|
void ScrollContainer::_update_scrollbar_pos() {
|
|
|
|
Size2 hmin = h_scroll->get_combined_minimum_size();
|
|
Size2 vmin = v_scroll->get_combined_minimum_size();
|
|
|
|
v_scroll->set_anchor_and_margin(MARGIN_LEFT, ANCHOR_END, vmin.width);
|
|
v_scroll->set_anchor_and_margin(MARGIN_RIGHT, ANCHOR_END, 0);
|
|
v_scroll->set_anchor_and_margin(MARGIN_TOP, ANCHOR_BEGIN, 0);
|
|
v_scroll->set_anchor_and_margin(MARGIN_BOTTOM, ANCHOR_END, 0);
|
|
|
|
h_scroll->set_anchor_and_margin(MARGIN_LEFT, ANCHOR_BEGIN, 0);
|
|
h_scroll->set_anchor_and_margin(MARGIN_RIGHT, ANCHOR_END, 0);
|
|
h_scroll->set_anchor_and_margin(MARGIN_TOP, ANCHOR_END, hmin.height);
|
|
h_scroll->set_anchor_and_margin(MARGIN_BOTTOM, ANCHOR_END, 0);
|
|
|
|
h_scroll->raise();
|
|
v_scroll->raise();
|
|
}
|
|
|
|
void ScrollContainer::_notification(int p_what) {
|
|
|
|
if (p_what == NOTIFICATION_ENTER_TREE || p_what == NOTIFICATION_THEME_CHANGED) {
|
|
|
|
call_deferred("_update_scrollbar_pos");
|
|
};
|
|
|
|
if (p_what == NOTIFICATION_SORT_CHILDREN) {
|
|
|
|
child_max_size = Size2(0, 0);
|
|
Size2 size = get_size();
|
|
if (h_scroll->is_visible_in_tree())
|
|
size.y -= h_scroll->get_minimum_size().y;
|
|
|
|
if (v_scroll->is_visible_in_tree())
|
|
size.x -= h_scroll->get_minimum_size().x;
|
|
|
|
for (int i = 0; i < get_child_count(); i++) {
|
|
|
|
Control *c = get_child(i)->cast_to<Control>();
|
|
if (!c)
|
|
continue;
|
|
if (c->is_set_as_toplevel())
|
|
continue;
|
|
if (c == h_scroll || c == v_scroll)
|
|
continue;
|
|
Size2 minsize = c->get_combined_minimum_size();
|
|
child_max_size.x = MAX(child_max_size.x, minsize.x);
|
|
child_max_size.y = MAX(child_max_size.y, minsize.y);
|
|
|
|
Rect2 r = Rect2(-scroll, minsize);
|
|
if (!scroll_h || (!h_scroll->is_visible_in_tree() && c->get_h_size_flags() & SIZE_EXPAND)) {
|
|
r.pos.x = 0;
|
|
if (c->get_h_size_flags() & SIZE_EXPAND)
|
|
r.size.width = MAX(size.width, minsize.width);
|
|
else
|
|
r.size.width = minsize.width;
|
|
}
|
|
if (!scroll_v || (!v_scroll->is_visible_in_tree() && c->get_v_size_flags() & SIZE_EXPAND)) {
|
|
r.pos.y = 0;
|
|
r.size.height = size.height;
|
|
if (c->get_v_size_flags() & SIZE_EXPAND)
|
|
r.size.height = MAX(size.height, minsize.height);
|
|
else
|
|
r.size.height = minsize.height;
|
|
}
|
|
fit_child_in_rect(c, r);
|
|
}
|
|
update();
|
|
};
|
|
|
|
if (p_what == NOTIFICATION_DRAW) {
|
|
|
|
update_scrollbars();
|
|
}
|
|
|
|
if (p_what == NOTIFICATION_FIXED_PROCESS) {
|
|
|
|
if (drag_touching) {
|
|
|
|
if (drag_touching_deaccel) {
|
|
|
|
Vector2 pos = Vector2(h_scroll->get_value(), v_scroll->get_value());
|
|
pos += drag_speed * get_fixed_process_delta_time();
|
|
|
|
bool turnoff_h = false;
|
|
bool turnoff_v = false;
|
|
|
|
if (pos.x < 0) {
|
|
pos.x = 0;
|
|
turnoff_h = true;
|
|
}
|
|
if (pos.x > (h_scroll->get_max() - h_scroll->get_page())) {
|
|
pos.x = h_scroll->get_max() - h_scroll->get_page();
|
|
turnoff_h = true;
|
|
}
|
|
|
|
if (pos.y < 0) {
|
|
pos.y = 0;
|
|
turnoff_v = true;
|
|
}
|
|
if (pos.y > (v_scroll->get_max() - v_scroll->get_page())) {
|
|
pos.y = v_scroll->get_max() - v_scroll->get_page();
|
|
turnoff_v = true;
|
|
}
|
|
|
|
if (scroll_h)
|
|
h_scroll->set_value(pos.x);
|
|
if (scroll_v)
|
|
v_scroll->set_value(pos.y);
|
|
|
|
float sgn_x = drag_speed.x < 0 ? -1 : 1;
|
|
float val_x = Math::abs(drag_speed.x);
|
|
val_x -= 1000 * get_fixed_process_delta_time();
|
|
|
|
if (val_x < 0) {
|
|
turnoff_h = true;
|
|
}
|
|
|
|
float sgn_y = drag_speed.y < 0 ? -1 : 1;
|
|
float val_y = Math::abs(drag_speed.y);
|
|
val_y -= 1000 * get_fixed_process_delta_time();
|
|
|
|
if (val_y < 0) {
|
|
turnoff_v = true;
|
|
}
|
|
|
|
drag_speed = Vector2(sgn_x * val_x, sgn_y * val_y);
|
|
|
|
if (turnoff_h && turnoff_v) {
|
|
set_fixed_process(false);
|
|
drag_touching = false;
|
|
drag_touching_deaccel = false;
|
|
}
|
|
|
|
} else {
|
|
|
|
if (time_since_motion == 0 || time_since_motion > 0.1) {
|
|
|
|
Vector2 diff = drag_accum - last_drag_accum;
|
|
last_drag_accum = drag_accum;
|
|
drag_speed = diff / get_fixed_process_delta_time();
|
|
}
|
|
|
|
time_since_motion += get_fixed_process_delta_time();
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
void ScrollContainer::update_scrollbars() {
|
|
|
|
Size2 size = get_size();
|
|
|
|
Size2 hmin = h_scroll->get_combined_minimum_size();
|
|
Size2 vmin = v_scroll->get_combined_minimum_size();
|
|
|
|
Size2 min = child_max_size;
|
|
|
|
if (!scroll_v || min.height <= size.height - hmin.height) {
|
|
|
|
v_scroll->hide();
|
|
scroll.y = 0;
|
|
} else {
|
|
|
|
v_scroll->show();
|
|
scroll.y = v_scroll->get_value();
|
|
}
|
|
|
|
v_scroll->set_max(min.height);
|
|
v_scroll->set_page(size.height - hmin.height);
|
|
|
|
if (!scroll_h || min.width <= size.width - vmin.width) {
|
|
|
|
h_scroll->hide();
|
|
scroll.x = 0;
|
|
} else {
|
|
|
|
h_scroll->show();
|
|
h_scroll->set_max(min.width);
|
|
h_scroll->set_page(size.width - vmin.width);
|
|
scroll.x = h_scroll->get_value();
|
|
}
|
|
}
|
|
|
|
void ScrollContainer::_scroll_moved(float) {
|
|
|
|
scroll.x = h_scroll->get_value();
|
|
scroll.y = v_scroll->get_value();
|
|
queue_sort();
|
|
|
|
update();
|
|
};
|
|
|
|
void ScrollContainer::set_enable_h_scroll(bool p_enable) {
|
|
|
|
scroll_h = p_enable;
|
|
queue_sort();
|
|
}
|
|
|
|
bool ScrollContainer::is_h_scroll_enabled() const {
|
|
|
|
return scroll_h;
|
|
}
|
|
|
|
void ScrollContainer::set_enable_v_scroll(bool p_enable) {
|
|
|
|
scroll_v = p_enable;
|
|
queue_sort();
|
|
}
|
|
|
|
bool ScrollContainer::is_v_scroll_enabled() const {
|
|
|
|
return scroll_v;
|
|
}
|
|
|
|
int ScrollContainer::get_v_scroll() const {
|
|
|
|
return v_scroll->get_value();
|
|
}
|
|
void ScrollContainer::set_v_scroll(int p_pos) {
|
|
|
|
v_scroll->set_value(p_pos);
|
|
_cancel_drag();
|
|
}
|
|
|
|
int ScrollContainer::get_h_scroll() const {
|
|
|
|
return h_scroll->get_value();
|
|
}
|
|
void ScrollContainer::set_h_scroll(int p_pos) {
|
|
|
|
h_scroll->set_value(p_pos);
|
|
_cancel_drag();
|
|
}
|
|
|
|
String ScrollContainer::get_configuration_warning() const {
|
|
|
|
int found = 0;
|
|
|
|
for (int i = 0; i < get_child_count(); i++) {
|
|
|
|
Control *c = get_child(i)->cast_to<Control>();
|
|
if (!c)
|
|
continue;
|
|
if (c->is_set_as_toplevel())
|
|
continue;
|
|
if (c == h_scroll || c == v_scroll)
|
|
continue;
|
|
|
|
found++;
|
|
}
|
|
|
|
if (found != 1)
|
|
return TTR("ScrollContainer is intended to work with a single child control.\nUse a container as child (VBox,HBox,etc), or a Control and set the custom minimum size manually.");
|
|
else
|
|
return "";
|
|
}
|
|
|
|
void ScrollContainer::_bind_methods() {
|
|
|
|
ClassDB::bind_method(D_METHOD("_scroll_moved"), &ScrollContainer::_scroll_moved);
|
|
ClassDB::bind_method(D_METHOD("_gui_input"), &ScrollContainer::_gui_input);
|
|
ClassDB::bind_method(D_METHOD("set_enable_h_scroll", "enable"), &ScrollContainer::set_enable_h_scroll);
|
|
ClassDB::bind_method(D_METHOD("is_h_scroll_enabled"), &ScrollContainer::is_h_scroll_enabled);
|
|
ClassDB::bind_method(D_METHOD("set_enable_v_scroll", "enable"), &ScrollContainer::set_enable_v_scroll);
|
|
ClassDB::bind_method(D_METHOD("is_v_scroll_enabled"), &ScrollContainer::is_v_scroll_enabled);
|
|
ClassDB::bind_method(D_METHOD("_update_scrollbar_pos"), &ScrollContainer::_update_scrollbar_pos);
|
|
ClassDB::bind_method(D_METHOD("set_h_scroll", "val"), &ScrollContainer::set_h_scroll);
|
|
ClassDB::bind_method(D_METHOD("get_h_scroll"), &ScrollContainer::get_h_scroll);
|
|
ClassDB::bind_method(D_METHOD("set_v_scroll", "val"), &ScrollContainer::set_v_scroll);
|
|
ClassDB::bind_method(D_METHOD("get_v_scroll"), &ScrollContainer::get_v_scroll);
|
|
|
|
ADD_GROUP("Scroll", "scroll_");
|
|
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "scroll_horizontal"), "set_enable_h_scroll", "is_h_scroll_enabled");
|
|
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "scroll_vertical"), "set_enable_v_scroll", "is_v_scroll_enabled");
|
|
};
|
|
|
|
ScrollContainer::ScrollContainer() {
|
|
|
|
h_scroll = memnew(HScrollBar);
|
|
h_scroll->set_name("_h_scroll");
|
|
add_child(h_scroll);
|
|
|
|
v_scroll = memnew(VScrollBar);
|
|
v_scroll->set_name("_v_scroll");
|
|
add_child(v_scroll);
|
|
|
|
h_scroll->connect("value_changed", this, "_scroll_moved");
|
|
v_scroll->connect("value_changed", this, "_scroll_moved");
|
|
|
|
drag_speed = Vector2();
|
|
drag_touching = false;
|
|
drag_touching_deaccel = false;
|
|
scroll_h = true;
|
|
scroll_v = true;
|
|
|
|
set_clip_contents(true);
|
|
};
|