746dddc067
* Map is unnecessary and inefficient in almost every case. * Replaced by the new HashMap. * Renamed Map to RBMap and Set to RBSet for cases that still make sense (order matters) but use is discouraged. There were very few cases where replacing by HashMap was undesired because keeping the key order was intended. I tried to keep those (as RBMap) as much as possible, but might have missed some. Review appreciated!
392 lines
10 KiB
C++
392 lines
10 KiB
C++
/*************************************************************************/
|
|
/* box_container.cpp */
|
|
/*************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* https://godotengine.org */
|
|
/*************************************************************************/
|
|
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
|
|
/* Copyright (c) 2014-2022 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 "box_container.h"
|
|
|
|
#include "label.h"
|
|
#include "margin_container.h"
|
|
|
|
struct _MinSizeCache {
|
|
int min_size = 0;
|
|
bool will_stretch = false;
|
|
int final_size = 0;
|
|
};
|
|
|
|
void BoxContainer::_resort() {
|
|
/** First pass, determine minimum size AND amount of stretchable elements */
|
|
|
|
Size2i new_size = get_size();
|
|
|
|
int sep = get_theme_constant(SNAME("separation")); //,vertical?"VBoxContainer":"HBoxContainer");
|
|
bool rtl = is_layout_rtl();
|
|
|
|
bool first = true;
|
|
int children_count = 0;
|
|
int stretch_min = 0;
|
|
int stretch_avail = 0;
|
|
float stretch_ratio_total = 0.0;
|
|
HashMap<Control *, _MinSizeCache> min_size_cache;
|
|
|
|
for (int i = 0; i < get_child_count(); i++) {
|
|
Control *c = Object::cast_to<Control>(get_child(i));
|
|
if (!c || !c->is_visible_in_tree()) {
|
|
continue;
|
|
}
|
|
if (c->is_set_as_top_level()) {
|
|
continue;
|
|
}
|
|
|
|
Size2i size = c->get_combined_minimum_size();
|
|
_MinSizeCache msc;
|
|
|
|
if (vertical) { /* VERTICAL */
|
|
stretch_min += size.height;
|
|
msc.min_size = size.height;
|
|
msc.will_stretch = c->get_v_size_flags() & SIZE_EXPAND;
|
|
|
|
} else { /* HORIZONTAL */
|
|
stretch_min += size.width;
|
|
msc.min_size = size.width;
|
|
msc.will_stretch = c->get_h_size_flags() & SIZE_EXPAND;
|
|
}
|
|
|
|
if (msc.will_stretch) {
|
|
stretch_avail += msc.min_size;
|
|
stretch_ratio_total += c->get_stretch_ratio();
|
|
}
|
|
msc.final_size = msc.min_size;
|
|
min_size_cache[c] = msc;
|
|
children_count++;
|
|
}
|
|
|
|
if (children_count == 0) {
|
|
return;
|
|
}
|
|
|
|
int stretch_max = (vertical ? new_size.height : new_size.width) - (children_count - 1) * sep;
|
|
int stretch_diff = stretch_max - stretch_min;
|
|
if (stretch_diff < 0) {
|
|
//avoid negative stretch space
|
|
stretch_diff = 0;
|
|
}
|
|
|
|
stretch_avail += stretch_diff; //available stretch space.
|
|
/** Second, pass successively to discard elements that can't be stretched, this will run while stretchable
|
|
elements exist */
|
|
|
|
bool has_stretched = false;
|
|
while (stretch_ratio_total > 0) { // first of all, don't even be here if no stretchable objects exist
|
|
|
|
has_stretched = true;
|
|
bool refit_successful = true; //assume refit-test will go well
|
|
float error = 0.0; // Keep track of accumulated error in pixels
|
|
|
|
for (int i = 0; i < get_child_count(); i++) {
|
|
Control *c = Object::cast_to<Control>(get_child(i));
|
|
if (!c || !c->is_visible_in_tree()) {
|
|
continue;
|
|
}
|
|
if (c->is_set_as_top_level()) {
|
|
continue;
|
|
}
|
|
|
|
ERR_FAIL_COND(!min_size_cache.has(c));
|
|
_MinSizeCache &msc = min_size_cache[c];
|
|
|
|
if (msc.will_stretch) { //wants to stretch
|
|
//let's see if it can really stretch
|
|
float final_pixel_size = stretch_avail * c->get_stretch_ratio() / stretch_ratio_total;
|
|
// Add leftover fractional pixels to error accumulator
|
|
error += final_pixel_size - (int)final_pixel_size;
|
|
if (final_pixel_size < msc.min_size) {
|
|
//if available stretching area is too small for widget,
|
|
//then remove it from stretching area
|
|
msc.will_stretch = false;
|
|
stretch_ratio_total -= c->get_stretch_ratio();
|
|
refit_successful = false;
|
|
stretch_avail -= msc.min_size;
|
|
msc.final_size = msc.min_size;
|
|
break;
|
|
} else {
|
|
msc.final_size = final_pixel_size;
|
|
// Dump accumulated error if one pixel or more
|
|
if (error >= 1) {
|
|
msc.final_size += 1;
|
|
error -= 1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (refit_successful) { //uf refit went well, break
|
|
break;
|
|
}
|
|
}
|
|
|
|
/** Final pass, draw and stretch elements **/
|
|
|
|
int ofs = 0;
|
|
if (!has_stretched) {
|
|
if (!vertical) {
|
|
switch (alignment) {
|
|
case ALIGNMENT_BEGIN:
|
|
if (rtl) {
|
|
ofs = stretch_diff;
|
|
}
|
|
break;
|
|
case ALIGNMENT_CENTER:
|
|
ofs = stretch_diff / 2;
|
|
break;
|
|
case ALIGNMENT_END:
|
|
if (!rtl) {
|
|
ofs = stretch_diff;
|
|
}
|
|
break;
|
|
}
|
|
} else {
|
|
switch (alignment) {
|
|
case ALIGNMENT_BEGIN:
|
|
break;
|
|
case ALIGNMENT_CENTER:
|
|
ofs = stretch_diff / 2;
|
|
break;
|
|
case ALIGNMENT_END:
|
|
ofs = stretch_diff;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
first = true;
|
|
int idx = 0;
|
|
|
|
int start;
|
|
int end;
|
|
int delta;
|
|
if (!rtl || vertical) {
|
|
start = 0;
|
|
end = get_child_count();
|
|
delta = +1;
|
|
} else {
|
|
start = get_child_count() - 1;
|
|
end = -1;
|
|
delta = -1;
|
|
}
|
|
|
|
for (int i = start; i != end; i += delta) {
|
|
Control *c = Object::cast_to<Control>(get_child(i));
|
|
if (!c || !c->is_visible_in_tree()) {
|
|
continue;
|
|
}
|
|
if (c->is_set_as_top_level()) {
|
|
continue;
|
|
}
|
|
|
|
_MinSizeCache &msc = min_size_cache[c];
|
|
|
|
if (first) {
|
|
first = false;
|
|
} else {
|
|
ofs += sep;
|
|
}
|
|
|
|
int from = ofs;
|
|
int to = ofs + msc.final_size;
|
|
|
|
if (msc.will_stretch && idx == children_count - 1) {
|
|
//adjust so the last one always fits perfect
|
|
//compensating for numerical imprecision
|
|
|
|
to = vertical ? new_size.height : new_size.width;
|
|
}
|
|
|
|
int size = to - from;
|
|
|
|
Rect2 rect;
|
|
|
|
if (vertical) {
|
|
rect = Rect2(0, from, new_size.width, size);
|
|
} else {
|
|
rect = Rect2(from, 0, size, new_size.height);
|
|
}
|
|
|
|
fit_child_in_rect(c, rect);
|
|
|
|
ofs = to;
|
|
idx++;
|
|
}
|
|
}
|
|
|
|
Size2 BoxContainer::get_minimum_size() const {
|
|
/* Calculate MINIMUM SIZE */
|
|
|
|
Size2i minimum;
|
|
int sep = get_theme_constant(SNAME("separation")); //,vertical?"VBoxContainer":"HBoxContainer");
|
|
|
|
bool first = true;
|
|
|
|
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_top_level()) {
|
|
continue;
|
|
}
|
|
|
|
if (!c->is_visible()) {
|
|
continue;
|
|
}
|
|
|
|
Size2i size = c->get_combined_minimum_size();
|
|
|
|
if (vertical) { /* VERTICAL */
|
|
|
|
if (size.width > minimum.width) {
|
|
minimum.width = size.width;
|
|
}
|
|
|
|
minimum.height += size.height + (first ? 0 : sep);
|
|
|
|
} else { /* HORIZONTAL */
|
|
|
|
if (size.height > minimum.height) {
|
|
minimum.height = size.height;
|
|
}
|
|
|
|
minimum.width += size.width + (first ? 0 : sep);
|
|
}
|
|
|
|
first = false;
|
|
}
|
|
|
|
return minimum;
|
|
}
|
|
|
|
void BoxContainer::_notification(int p_what) {
|
|
switch (p_what) {
|
|
case NOTIFICATION_SORT_CHILDREN: {
|
|
_resort();
|
|
} break;
|
|
|
|
case NOTIFICATION_THEME_CHANGED: {
|
|
update_minimum_size();
|
|
} break;
|
|
|
|
case NOTIFICATION_TRANSLATION_CHANGED:
|
|
case NOTIFICATION_LAYOUT_DIRECTION_CHANGED: {
|
|
queue_sort();
|
|
} break;
|
|
}
|
|
}
|
|
|
|
void BoxContainer::set_alignment(AlignmentMode p_alignment) {
|
|
alignment = p_alignment;
|
|
_resort();
|
|
}
|
|
|
|
BoxContainer::AlignmentMode BoxContainer::get_alignment() const {
|
|
return alignment;
|
|
}
|
|
|
|
Control *BoxContainer::add_spacer(bool p_begin) {
|
|
Control *c = memnew(Control);
|
|
c->set_mouse_filter(MOUSE_FILTER_PASS); //allow spacer to pass mouse events
|
|
|
|
if (vertical) {
|
|
c->set_v_size_flags(SIZE_EXPAND_FILL);
|
|
} else {
|
|
c->set_h_size_flags(SIZE_EXPAND_FILL);
|
|
}
|
|
|
|
add_child(c);
|
|
if (p_begin) {
|
|
move_child(c, 0);
|
|
}
|
|
|
|
return c;
|
|
}
|
|
|
|
Vector<int> BoxContainer::get_allowed_size_flags_horizontal() const {
|
|
Vector<int> flags;
|
|
flags.append(SIZE_FILL);
|
|
if (!vertical) {
|
|
flags.append(SIZE_EXPAND);
|
|
}
|
|
flags.append(SIZE_SHRINK_BEGIN);
|
|
flags.append(SIZE_SHRINK_CENTER);
|
|
flags.append(SIZE_SHRINK_END);
|
|
return flags;
|
|
}
|
|
|
|
Vector<int> BoxContainer::get_allowed_size_flags_vertical() const {
|
|
Vector<int> flags;
|
|
flags.append(SIZE_FILL);
|
|
if (vertical) {
|
|
flags.append(SIZE_EXPAND);
|
|
}
|
|
flags.append(SIZE_SHRINK_BEGIN);
|
|
flags.append(SIZE_SHRINK_CENTER);
|
|
flags.append(SIZE_SHRINK_END);
|
|
return flags;
|
|
}
|
|
|
|
BoxContainer::BoxContainer(bool p_vertical) {
|
|
vertical = p_vertical;
|
|
}
|
|
|
|
void BoxContainer::_bind_methods() {
|
|
ClassDB::bind_method(D_METHOD("add_spacer", "begin"), &BoxContainer::add_spacer);
|
|
ClassDB::bind_method(D_METHOD("get_alignment"), &BoxContainer::get_alignment);
|
|
ClassDB::bind_method(D_METHOD("set_alignment", "alignment"), &BoxContainer::set_alignment);
|
|
|
|
BIND_ENUM_CONSTANT(ALIGNMENT_BEGIN);
|
|
BIND_ENUM_CONSTANT(ALIGNMENT_CENTER);
|
|
BIND_ENUM_CONSTANT(ALIGNMENT_END);
|
|
|
|
ADD_PROPERTY(PropertyInfo(Variant::INT, "alignment", PROPERTY_HINT_ENUM, "Begin,Center,End"), "set_alignment", "get_alignment");
|
|
}
|
|
|
|
MarginContainer *VBoxContainer::add_margin_child(const String &p_label, Control *p_control, bool p_expand) {
|
|
Label *l = memnew(Label);
|
|
l->set_theme_type_variation("HeaderSmall");
|
|
l->set_text(p_label);
|
|
add_child(l);
|
|
MarginContainer *mc = memnew(MarginContainer);
|
|
mc->add_theme_constant_override("margin_left", 0);
|
|
mc->add_child(p_control, true);
|
|
add_child(mc);
|
|
if (p_expand) {
|
|
mc->set_v_size_flags(SIZE_EXPAND_FILL);
|
|
}
|
|
|
|
return mc;
|
|
}
|