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d1c2a0df4e
Zero or negative ratios are not valid, so the property hint prevents choosing such values. The property hint allows using 4 decimals so that common aspect ratios like 16/9 can be specified with a good level of precision.
191 lines
7.3 KiB
C++
191 lines
7.3 KiB
C++
/*************************************************************************/
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/* aspect_ratio_container.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "aspect_ratio_container.h"
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Size2 AspectRatioContainer::get_minimum_size() const {
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Size2 ms;
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for (int i = 0; i < get_child_count(); i++) {
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Control *c = Object::cast_to<Control>(get_child(i));
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if (!c) {
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continue;
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}
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if (c->is_set_as_top_level()) {
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continue;
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}
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if (!c->is_visible()) {
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continue;
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}
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Size2 minsize = c->get_combined_minimum_size();
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ms.width = MAX(ms.width, minsize.width);
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ms.height = MAX(ms.height, minsize.height);
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}
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return ms;
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}
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void AspectRatioContainer::set_ratio(float p_ratio) {
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ratio = p_ratio;
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queue_sort();
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}
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void AspectRatioContainer::set_stretch_mode(StretchMode p_mode) {
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stretch_mode = p_mode;
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queue_sort();
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}
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void AspectRatioContainer::set_alignment_horizontal(AlignmentMode p_alignment_horizontal) {
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alignment_horizontal = p_alignment_horizontal;
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queue_sort();
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}
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void AspectRatioContainer::set_alignment_vertical(AlignmentMode p_alignment_vertical) {
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alignment_vertical = p_alignment_vertical;
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queue_sort();
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}
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Vector<int> AspectRatioContainer::get_allowed_size_flags_horizontal() const {
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Vector<int> flags;
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flags.append(SIZE_FILL);
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flags.append(SIZE_SHRINK_BEGIN);
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flags.append(SIZE_SHRINK_CENTER);
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flags.append(SIZE_SHRINK_END);
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return flags;
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}
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Vector<int> AspectRatioContainer::get_allowed_size_flags_vertical() const {
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Vector<int> flags;
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flags.append(SIZE_FILL);
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flags.append(SIZE_SHRINK_BEGIN);
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flags.append(SIZE_SHRINK_CENTER);
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flags.append(SIZE_SHRINK_END);
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return flags;
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}
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void AspectRatioContainer::_notification(int p_what) {
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switch (p_what) {
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case NOTIFICATION_SORT_CHILDREN: {
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bool rtl = is_layout_rtl();
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Size2 size = get_size();
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for (int i = 0; i < get_child_count(); i++) {
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Control *c = Object::cast_to<Control>(get_child(i));
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if (!c) {
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continue;
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}
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if (c->is_set_as_top_level()) {
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continue;
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}
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Size2 child_minsize = c->get_combined_minimum_size();
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Size2 child_size = Size2(ratio, 1.0);
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float scale_factor = 1.0;
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switch (stretch_mode) {
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case STRETCH_WIDTH_CONTROLS_HEIGHT: {
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scale_factor = size.x / child_size.x;
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} break;
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case STRETCH_HEIGHT_CONTROLS_WIDTH: {
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scale_factor = size.y / child_size.y;
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} break;
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case STRETCH_FIT: {
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scale_factor = MIN(size.x / child_size.x, size.y / child_size.y);
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} break;
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case STRETCH_COVER: {
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scale_factor = MAX(size.x / child_size.x, size.y / child_size.y);
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} break;
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}
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child_size *= scale_factor;
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child_size.x = MAX(child_size.x, child_minsize.x);
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child_size.y = MAX(child_size.y, child_minsize.y);
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float align_x = 0.5;
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switch (alignment_horizontal) {
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case ALIGNMENT_BEGIN: {
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align_x = 0.0;
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} break;
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case ALIGNMENT_CENTER: {
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align_x = 0.5;
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} break;
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case ALIGNMENT_END: {
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align_x = 1.0;
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} break;
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}
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float align_y = 0.5;
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switch (alignment_vertical) {
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case ALIGNMENT_BEGIN: {
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align_y = 0.0;
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} break;
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case ALIGNMENT_CENTER: {
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align_y = 0.5;
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} break;
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case ALIGNMENT_END: {
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align_y = 1.0;
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} break;
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}
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Vector2 offset = (size - child_size) * Vector2(align_x, align_y);
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if (rtl) {
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fit_child_in_rect(c, Rect2(Vector2(size.x - offset.x - child_size.x, offset.y), child_size));
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} else {
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fit_child_in_rect(c, Rect2(offset, child_size));
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}
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}
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} break;
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}
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}
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void AspectRatioContainer::_bind_methods() {
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ClassDB::bind_method(D_METHOD("set_ratio", "ratio"), &AspectRatioContainer::set_ratio);
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ClassDB::bind_method(D_METHOD("get_ratio"), &AspectRatioContainer::get_ratio);
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ClassDB::bind_method(D_METHOD("set_stretch_mode", "stretch_mode"), &AspectRatioContainer::set_stretch_mode);
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ClassDB::bind_method(D_METHOD("get_stretch_mode"), &AspectRatioContainer::get_stretch_mode);
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ClassDB::bind_method(D_METHOD("set_alignment_horizontal", "alignment_horizontal"), &AspectRatioContainer::set_alignment_horizontal);
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ClassDB::bind_method(D_METHOD("get_alignment_horizontal"), &AspectRatioContainer::get_alignment_horizontal);
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ClassDB::bind_method(D_METHOD("set_alignment_vertical", "alignment_vertical"), &AspectRatioContainer::set_alignment_vertical);
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ClassDB::bind_method(D_METHOD("get_alignment_vertical"), &AspectRatioContainer::get_alignment_vertical);
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ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "ratio", PROPERTY_HINT_RANGE, "0.001,10.0,0.0001,or_greater"), "set_ratio", "get_ratio");
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ADD_PROPERTY(PropertyInfo(Variant::INT, "stretch_mode", PROPERTY_HINT_ENUM, "Width Controls Height,Height Controls Width,Fit,Cover"), "set_stretch_mode", "get_stretch_mode");
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ADD_GROUP("Alignment", "alignment_");
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ADD_PROPERTY(PropertyInfo(Variant::INT, "alignment_horizontal", PROPERTY_HINT_ENUM, "Begin,Center,End"), "set_alignment_horizontal", "get_alignment_horizontal");
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ADD_PROPERTY(PropertyInfo(Variant::INT, "alignment_vertical", PROPERTY_HINT_ENUM, "Begin,Center,End"), "set_alignment_vertical", "get_alignment_vertical");
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BIND_ENUM_CONSTANT(STRETCH_WIDTH_CONTROLS_HEIGHT);
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BIND_ENUM_CONSTANT(STRETCH_HEIGHT_CONTROLS_WIDTH);
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BIND_ENUM_CONSTANT(STRETCH_FIT);
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BIND_ENUM_CONSTANT(STRETCH_COVER);
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BIND_ENUM_CONSTANT(ALIGNMENT_BEGIN);
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BIND_ENUM_CONSTANT(ALIGNMENT_CENTER);
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BIND_ENUM_CONSTANT(ALIGNMENT_END);
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}
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