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428 lines
11 KiB
C++
428 lines
11 KiB
C++
/*************************************************************************/
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/* split_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) 2007-2017 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2017 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 "split_container.h"
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#include "label.h"
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#include "margin_container.h"
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struct _MinSizeCache {
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int min_size;
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bool will_stretch;
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int final_size;
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};
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Control *SplitContainer::_getch(int p_idx) const {
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int idx = 0;
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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 || !c->is_visible_in_tree())
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continue;
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if (c->is_set_as_toplevel())
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continue;
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if (idx == p_idx)
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return c;
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idx++;
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}
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return NULL;
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}
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void SplitContainer::_resort() {
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/** First pass, determine minimum size AND amount of stretchable elements */
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int axis = vertical ? 1 : 0;
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bool has_first = _getch(0);
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bool has_second = _getch(1);
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if (!has_first && !has_second) {
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return;
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} else if (!(has_first && has_second)) {
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if (has_first)
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fit_child_in_rect(_getch(0), Rect2(Point2(), get_size()));
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else
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fit_child_in_rect(_getch(1), Rect2(Point2(), get_size()));
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return;
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}
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Control *first = _getch(0);
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Control *second = _getch(1);
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bool ratiomode = false;
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bool expand_first_mode = false;
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if (vertical) {
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ratiomode = first->get_v_size_flags() & SIZE_EXPAND && second->get_v_size_flags() & SIZE_EXPAND;
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expand_first_mode = first->get_v_size_flags() & SIZE_EXPAND && !(second->get_v_size_flags() & SIZE_EXPAND);
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} else {
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ratiomode = first->get_h_size_flags() & SIZE_EXPAND && second->get_h_size_flags() & SIZE_EXPAND;
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expand_first_mode = first->get_h_size_flags() & SIZE_EXPAND && !(second->get_h_size_flags() & SIZE_EXPAND);
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}
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int sep = get_constant("separation");
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Ref<Texture> g = get_icon("grabber");
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if (dragger_visibility == DRAGGER_HIDDEN_COLLAPSED) {
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sep = 0;
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} else {
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sep = MAX(sep, vertical ? g->get_height() : g->get_width());
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}
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int total = vertical ? get_size().height : get_size().width;
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total -= sep;
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int minimum = 0;
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Size2 ms_first = first->get_combined_minimum_size();
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Size2 ms_second = second->get_combined_minimum_size();
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if (vertical) {
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minimum = ms_first.height + ms_second.height;
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} else {
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minimum = ms_first.width + ms_second.width;
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}
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int available = total - minimum;
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if (available < 0)
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available = 0;
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middle_sep = 0;
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if (collapsed) {
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if (ratiomode) {
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int first_ratio = first->get_stretch_ratio();
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int second_ratio = second->get_stretch_ratio();
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float ratio = float(first_ratio) / (first_ratio + second_ratio);
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middle_sep = ms_first[axis] + available * ratio;
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} else if (expand_first_mode) {
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middle_sep = get_size()[axis] - ms_second[axis] - sep;
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} else {
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middle_sep = ms_first[axis];
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}
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} else if (ratiomode) {
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int first_ratio = first->get_stretch_ratio();
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int second_ratio = second->get_stretch_ratio();
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float ratio = float(first_ratio) / (first_ratio + second_ratio);
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if (expand_ofs < -(available * ratio))
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expand_ofs = -(available * ratio);
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else if (expand_ofs > (available * (1.0 - ratio)))
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expand_ofs = (available * (1.0 - ratio));
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middle_sep = ms_first[axis] + available * ratio + expand_ofs;
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} else if (expand_first_mode) {
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if (expand_ofs > 0)
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expand_ofs = 0;
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if (expand_ofs < -available)
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expand_ofs = -available;
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middle_sep = get_size()[axis] - ms_second[axis] - sep + expand_ofs;
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} else {
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if (expand_ofs < 0)
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expand_ofs = 0;
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if (expand_ofs > available)
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expand_ofs = available;
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middle_sep = ms_first[axis] + expand_ofs;
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}
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if (vertical) {
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fit_child_in_rect(first, Rect2(Point2(0, 0), Size2(get_size().width, middle_sep)));
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int sofs = middle_sep + sep;
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fit_child_in_rect(second, Rect2(Point2(0, sofs), Size2(get_size().width, get_size().height - sofs)));
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} else {
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fit_child_in_rect(first, Rect2(Point2(0, 0), Size2(middle_sep, get_size().height)));
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int sofs = middle_sep + sep;
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fit_child_in_rect(second, Rect2(Point2(sofs, 0), Size2(get_size().width - sofs, get_size().height)));
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}
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update();
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_change_notify("split_offset");
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}
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Size2 SplitContainer::get_minimum_size() const {
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/* Calculate MINIMUM SIZE */
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Size2i minimum;
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int sep = get_constant("separation");
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Ref<Texture> g = get_icon("grabber");
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sep = (dragger_visibility != DRAGGER_HIDDEN_COLLAPSED) ? MAX(sep, vertical ? g->get_height() : g->get_width()) : 0;
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for (int i = 0; i < 2; i++) {
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if (!_getch(i))
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break;
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if (i == 1) {
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if (vertical)
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minimum.height += sep;
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else
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minimum.width += sep;
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}
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Size2 ms = _getch(i)->get_combined_minimum_size();
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if (vertical) {
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minimum.height += ms.height;
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minimum.width = MAX(minimum.width, ms.width);
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} else {
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minimum.width += ms.width;
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minimum.height = MAX(minimum.height, ms.height);
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}
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}
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return minimum;
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}
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void SplitContainer::_notification(int p_what) {
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switch (p_what) {
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case NOTIFICATION_SORT_CHILDREN: {
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_resort();
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} break;
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case NOTIFICATION_MOUSE_ENTER: {
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mouse_inside = true;
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update();
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} break;
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case NOTIFICATION_MOUSE_EXIT: {
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mouse_inside = false;
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update();
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} break;
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case NOTIFICATION_DRAW: {
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if (!_getch(0) || !_getch(1))
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return;
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if (collapsed || (!mouse_inside && get_constant("autohide")))
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return;
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int sep = dragger_visibility != DRAGGER_HIDDEN_COLLAPSED ? get_constant("separation") : 0;
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Ref<Texture> tex = get_icon("grabber");
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Size2 size = get_size();
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if (vertical) {
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//draw_style_box( get_stylebox("bg"), Rect2(0,middle_sep,get_size().width,sep));
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if (dragger_visibility == DRAGGER_VISIBLE)
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draw_texture(tex, Point2i((size.x - tex->get_width()) / 2, middle_sep + (sep - tex->get_height()) / 2));
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} else {
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//draw_style_box( get_stylebox("bg"), Rect2(middle_sep,0,sep,get_size().height));
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if (dragger_visibility == DRAGGER_VISIBLE)
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draw_texture(tex, Point2i(middle_sep + (sep - tex->get_width()) / 2, (size.y - tex->get_height()) / 2));
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}
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} break;
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}
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}
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void SplitContainer::_gui_input(const Ref<InputEvent> &p_event) {
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if (collapsed || !_getch(0) || !_getch(1) || dragger_visibility != DRAGGER_VISIBLE)
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return;
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Ref<InputEventMouseButton> mb = p_event;
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if (mb.is_valid()) {
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if (mb->get_button_index() == BUTTON_LEFT) {
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if (mb->is_pressed()) {
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int sep = get_constant("separation");
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if (vertical) {
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if (mb->get_position().y > middle_sep && mb->get_position().y < middle_sep + sep) {
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dragging = true;
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drag_from = mb->get_position().y;
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drag_ofs = expand_ofs;
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}
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} else {
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if (mb->get_position().x > middle_sep && mb->get_position().x < middle_sep + sep) {
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dragging = true;
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drag_from = mb->get_position().x;
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drag_ofs = expand_ofs;
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}
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}
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} else {
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dragging = false;
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}
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}
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}
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Ref<InputEventMouseMotion> mm = p_event;
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if (mm.is_valid()) {
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if (dragging) {
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expand_ofs = drag_ofs + ((vertical ? mm->get_position().y : mm->get_position().x) - drag_from);
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queue_sort();
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emit_signal("dragged", get_split_offset());
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}
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}
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}
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Control::CursorShape SplitContainer::get_cursor_shape(const Point2 &p_pos) const {
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if (collapsed)
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return Control::get_cursor_shape(p_pos);
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if (dragging)
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return (vertical ? CURSOR_VSIZE : CURSOR_HSIZE);
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int sep = get_constant("separation");
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if (vertical) {
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if (p_pos.y > middle_sep && p_pos.y < middle_sep + sep) {
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return CURSOR_VSIZE;
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}
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} else {
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if (p_pos.x > middle_sep && p_pos.x < middle_sep + sep) {
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return CURSOR_HSIZE;
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}
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}
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return Control::get_cursor_shape(p_pos);
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}
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void SplitContainer::set_split_offset(int p_offset) {
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if (expand_ofs == p_offset)
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return;
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expand_ofs = p_offset;
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queue_sort();
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}
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int SplitContainer::get_split_offset() const {
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return expand_ofs;
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}
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void SplitContainer::set_collapsed(bool p_collapsed) {
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if (collapsed == p_collapsed)
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return;
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collapsed = p_collapsed;
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queue_sort();
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}
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void SplitContainer::set_dragger_visibility(DraggerVisibility p_visibility) {
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dragger_visibility = p_visibility;
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queue_sort();
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update();
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}
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SplitContainer::DraggerVisibility SplitContainer::get_dragger_visibility() const {
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return dragger_visibility;
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}
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bool SplitContainer::is_collapsed() const {
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return collapsed;
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}
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void SplitContainer::_bind_methods() {
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ClassDB::bind_method(D_METHOD("_gui_input"), &SplitContainer::_gui_input);
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ClassDB::bind_method(D_METHOD("set_split_offset", "offset"), &SplitContainer::set_split_offset);
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ClassDB::bind_method(D_METHOD("get_split_offset"), &SplitContainer::get_split_offset);
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ClassDB::bind_method(D_METHOD("set_collapsed", "collapsed"), &SplitContainer::set_collapsed);
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ClassDB::bind_method(D_METHOD("is_collapsed"), &SplitContainer::is_collapsed);
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ClassDB::bind_method(D_METHOD("set_dragger_visibility", "mode"), &SplitContainer::set_dragger_visibility);
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ClassDB::bind_method(D_METHOD("get_dragger_visibility"), &SplitContainer::get_dragger_visibility);
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ADD_SIGNAL(MethodInfo("dragged", PropertyInfo(Variant::INT, "offset")));
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ADD_PROPERTY(PropertyInfo(Variant::INT, "split_offset"), "set_split_offset", "get_split_offset");
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ADD_PROPERTY(PropertyInfo(Variant::BOOL, "collapsed"), "set_collapsed", "is_collapsed");
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ADD_PROPERTY(PropertyInfo(Variant::INT, "dragger_visibility", PROPERTY_HINT_ENUM, "Visible,Hidden,Hidden & Collapsed"), "set_dragger_visibility", "get_dragger_visibility");
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BIND_ENUM_CONSTANT(DRAGGER_VISIBLE);
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BIND_ENUM_CONSTANT(DRAGGER_HIDDEN);
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BIND_ENUM_CONSTANT(DRAGGER_HIDDEN_COLLAPSED);
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}
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SplitContainer::SplitContainer(bool p_vertical) {
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mouse_inside = false;
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expand_ofs = 0;
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middle_sep = 0;
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vertical = p_vertical;
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dragging = false;
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collapsed = false;
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dragger_visibility = DRAGGER_VISIBLE;
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}
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