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520 lines
19 KiB
C++
520 lines
19 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) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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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 "scene/gui/label.h"
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#include "scene/gui/margin_container.h"
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#include "scene/main/window.h"
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#include "scene/theme/theme_db.h"
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void SplitContainerDragger::gui_input(const Ref<InputEvent> &p_event) {
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ERR_FAIL_COND(p_event.is_null());
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SplitContainer *sc = Object::cast_to<SplitContainer>(get_parent());
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if (sc->collapsed || !sc->_get_sortable_child(0) || !sc->_get_sortable_child(1) || !sc->dragging_enabled) {
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return;
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}
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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() == MouseButton::LEFT) {
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if (mb->is_pressed()) {
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sc->_compute_split_offset(true);
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dragging = true;
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sc->emit_signal(SNAME("drag_started"));
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drag_ofs = sc->split_offset;
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if (sc->vertical) {
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drag_from = get_transform().xform(mb->get_position()).y;
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} else {
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drag_from = get_transform().xform(mb->get_position()).x;
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}
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} else {
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dragging = false;
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queue_redraw();
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sc->emit_signal(SNAME("drag_ended"));
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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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return;
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}
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Vector2i in_parent_pos = get_transform().xform(mm->get_position());
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if (!sc->vertical && is_layout_rtl()) {
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sc->split_offset = drag_ofs - (in_parent_pos.x - drag_from);
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} else {
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sc->split_offset = drag_ofs + ((sc->vertical ? in_parent_pos.y : in_parent_pos.x) - drag_from);
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}
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sc->_compute_split_offset(true);
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sc->queue_sort();
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sc->emit_signal(SNAME("dragged"), sc->get_split_offset());
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}
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}
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Control::CursorShape SplitContainerDragger::get_cursor_shape(const Point2 &p_pos) const {
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SplitContainer *sc = Object::cast_to<SplitContainer>(get_parent());
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if (!sc->collapsed && sc->dragging_enabled) {
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return (sc->vertical ? CURSOR_VSPLIT : CURSOR_HSPLIT);
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}
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return Control::get_cursor_shape(p_pos);
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}
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void SplitContainerDragger::_notification(int p_what) {
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switch (p_what) {
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case NOTIFICATION_MOUSE_ENTER: {
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mouse_inside = true;
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SplitContainer *sc = Object::cast_to<SplitContainer>(get_parent());
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if (sc->theme_cache.autohide) {
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queue_redraw();
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}
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} break;
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case NOTIFICATION_MOUSE_EXIT: {
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mouse_inside = false;
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SplitContainer *sc = Object::cast_to<SplitContainer>(get_parent());
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if (sc->theme_cache.autohide) {
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queue_redraw();
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}
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} break;
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case NOTIFICATION_DRAW: {
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SplitContainer *sc = Object::cast_to<SplitContainer>(get_parent());
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draw_style_box(sc->theme_cache.split_bar_background, split_bar_rect);
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if (sc->dragger_visibility == sc->DRAGGER_VISIBLE && (dragging || mouse_inside || !sc->theme_cache.autohide)) {
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Ref<Texture2D> tex = sc->_get_grabber_icon();
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float available_size = sc->vertical ? (sc->get_size().x - tex->get_size().x) : (sc->get_size().y - tex->get_size().y);
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if (available_size - sc->drag_area_margin_begin - sc->drag_area_margin_end > 0) { // Draw the grabber only if it fits.
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draw_texture(tex, (split_bar_rect.get_position() + (split_bar_rect.get_size() - tex->get_size()) * 0.5));
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}
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}
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if (sc->show_drag_area && Engine::get_singleton()->is_editor_hint()) {
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draw_rect(Rect2(Vector2(0, 0), get_size()), sc->dragging_enabled ? Color(1, 1, 0, 0.3) : Color(1, 0, 0, 0.3));
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}
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} break;
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}
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}
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Control *SplitContainer::_get_sortable_child(int p_idx, SortableVisbilityMode p_visibility_mode) const {
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int idx = 0;
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for (int i = 0; i < get_child_count(false); i++) {
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Control *c = as_sortable_control(get_child(i, false), p_visibility_mode);
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if (!c) {
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continue;
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}
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if (idx == p_idx) {
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return c;
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}
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idx++;
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}
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return nullptr;
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}
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Ref<Texture2D> SplitContainer::_get_grabber_icon() const {
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if (is_fixed) {
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return theme_cache.grabber_icon;
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} else {
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if (vertical) {
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return theme_cache.grabber_icon_v;
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} else {
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return theme_cache.grabber_icon_h;
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}
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}
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}
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int SplitContainer::_get_separation() const {
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if (dragger_visibility == DRAGGER_HIDDEN_COLLAPSED) {
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return 0;
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}
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// DRAGGER_VISIBLE or DRAGGER_HIDDEN.
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Ref<Texture2D> g = _get_grabber_icon();
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return MAX(theme_cache.separation, vertical ? g->get_height() : g->get_width());
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}
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void SplitContainer::_compute_split_offset(bool p_clamp) {
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Control *first = _get_sortable_child(0);
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Control *second = _get_sortable_child(1);
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int axis_index = vertical ? 1 : 0;
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int size = get_size()[axis_index];
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int sep = _get_separation();
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// Compute the wished size.
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int wished_size = 0;
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int split_offset_with_collapse = 0;
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if (!collapsed) {
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split_offset_with_collapse = split_offset;
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}
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bool first_is_expanded = (vertical ? first->get_v_size_flags() : first->get_h_size_flags()) & SIZE_EXPAND;
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bool second_is_expanded = (vertical ? second->get_v_size_flags() : second->get_h_size_flags()) & SIZE_EXPAND;
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if (first_is_expanded && second_is_expanded) {
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float ratio = first->get_stretch_ratio() / (first->get_stretch_ratio() + second->get_stretch_ratio());
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wished_size = size * ratio - sep * 0.5 + split_offset_with_collapse;
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} else if (first_is_expanded) {
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wished_size = size - sep + split_offset_with_collapse;
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} else {
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wished_size = split_offset_with_collapse;
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}
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// Clamp the split offset to acceptable values.
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int first_min_size = first->get_combined_minimum_size()[axis_index];
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int second_min_size = second->get_combined_minimum_size()[axis_index];
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computed_split_offset = CLAMP(wished_size, first_min_size, size - sep - second_min_size);
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// Clamp the split_offset if requested.
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if (p_clamp) {
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split_offset -= wished_size - computed_split_offset;
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}
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}
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void SplitContainer::_resort() {
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Control *first = _get_sortable_child(0);
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Control *second = _get_sortable_child(1);
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if (!first || !second) { // Only one child.
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if (first) {
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fit_child_in_rect(first, Rect2(Point2(), get_size()));
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} else if (second) {
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fit_child_in_rect(second, Rect2(Point2(), get_size()));
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}
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dragging_area_control->hide();
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return;
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}
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dragging_area_control->set_visible(!collapsed);
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_compute_split_offset(false); // This recalculates and sets computed_split_offset.
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int sep = _get_separation();
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bool is_rtl = is_layout_rtl();
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// Move the children.
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if (vertical) {
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fit_child_in_rect(first, Rect2(Point2(0, 0), Size2(get_size().width, computed_split_offset)));
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int sofs = computed_split_offset + 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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if (is_rtl) {
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computed_split_offset = get_size().width - computed_split_offset - sep;
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fit_child_in_rect(second, Rect2(Point2(0, 0), Size2(computed_split_offset, get_size().height)));
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int sofs = computed_split_offset + sep;
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fit_child_in_rect(first, Rect2(Point2(sofs, 0), Size2(get_size().width - sofs, get_size().height)));
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} else {
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fit_child_in_rect(first, Rect2(Point2(0, 0), Size2(computed_split_offset, get_size().height)));
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int sofs = computed_split_offset + 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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}
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dragging_area_control->set_mouse_filter(dragging_enabled ? MOUSE_FILTER_STOP : MOUSE_FILTER_IGNORE);
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const int dragger_ctrl_size = MAX(sep, theme_cache.minimum_grab_thickness);
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float split_bar_offset = (dragger_ctrl_size - sep) * 0.5;
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if (vertical) {
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Rect2 split_bar_rect = Rect2(is_rtl ? drag_area_margin_end : drag_area_margin_begin, computed_split_offset, get_size().width - drag_area_margin_begin - drag_area_margin_end, sep);
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dragging_area_control->set_rect(Rect2(split_bar_rect.position.x, split_bar_rect.position.y - split_bar_offset + drag_area_offset, split_bar_rect.size.x, dragger_ctrl_size));
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dragging_area_control->split_bar_rect = Rect2(Vector2(0.0, int(split_bar_offset) - drag_area_offset), split_bar_rect.size);
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} else {
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Rect2 split_bar_rect = Rect2(computed_split_offset, drag_area_margin_begin, sep, get_size().height - drag_area_margin_begin - drag_area_margin_end);
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dragging_area_control->set_rect(Rect2(split_bar_rect.position.x - split_bar_offset + drag_area_offset * (is_rtl ? -1 : 1), split_bar_rect.position.y, dragger_ctrl_size, split_bar_rect.size.y));
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dragging_area_control->split_bar_rect = Rect2(Vector2(int(split_bar_offset) - drag_area_offset * (is_rtl ? -1 : 1), 0.0), split_bar_rect.size);
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}
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queue_redraw();
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dragging_area_control->queue_redraw();
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}
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Size2 SplitContainer::get_minimum_size() const {
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Size2i minimum;
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int sep = _get_separation();
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for (int i = 0; i < 2; i++) {
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Control *child = _get_sortable_child(i, SortableVisbilityMode::VISIBLE);
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if (!child) {
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break;
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}
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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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}
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Size2 ms = child->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::_validate_property(PropertyInfo &p_property) const {
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if (is_fixed && p_property.name == "vertical") {
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p_property.usage = PROPERTY_USAGE_NONE;
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}
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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_TRANSLATION_CHANGED:
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case NOTIFICATION_LAYOUT_DIRECTION_CHANGED: {
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queue_sort();
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} break;
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case NOTIFICATION_SORT_CHILDREN: {
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_resort();
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} break;
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case NOTIFICATION_THEME_CHANGED: {
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update_minimum_size();
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} break;
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}
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}
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void SplitContainer::set_split_offset(int p_offset) {
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if (split_offset == p_offset) {
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return;
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}
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split_offset = 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 split_offset;
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}
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void SplitContainer::clamp_split_offset() {
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if (!_get_sortable_child(0) || !_get_sortable_child(1)) {
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return;
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}
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_compute_split_offset(true);
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queue_sort();
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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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}
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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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if (dragger_visibility == p_visibility) {
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return;
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}
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dragger_visibility = p_visibility;
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queue_sort();
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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::set_vertical(bool p_vertical) {
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ERR_FAIL_COND_MSG(is_fixed, "Can't change orientation of " + get_class() + ".");
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vertical = p_vertical;
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update_minimum_size();
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_resort();
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}
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bool SplitContainer::is_vertical() const {
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return vertical;
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}
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void SplitContainer::set_dragging_enabled(bool p_enabled) {
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if (dragging_enabled == p_enabled) {
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return;
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}
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dragging_enabled = p_enabled;
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if (!dragging_enabled && dragging_area_control->dragging) {
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dragging_area_control->dragging = false;
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// queue_redraw() is called by _resort().
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emit_signal(SNAME("drag_ended"));
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}
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if (get_viewport()) {
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get_viewport()->update_mouse_cursor_state();
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}
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_resort();
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}
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bool SplitContainer::is_dragging_enabled() const {
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return dragging_enabled;
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}
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Vector<int> SplitContainer::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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if (!vertical) {
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flags.append(SIZE_EXPAND);
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}
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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> SplitContainer::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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if (vertical) {
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flags.append(SIZE_EXPAND);
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}
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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 SplitContainer::set_drag_area_margin_begin(int p_margin) {
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if (drag_area_margin_begin == p_margin) {
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return;
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}
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drag_area_margin_begin = p_margin;
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queue_sort();
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}
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int SplitContainer::get_drag_area_margin_begin() const {
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return drag_area_margin_begin;
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}
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void SplitContainer::set_drag_area_margin_end(int p_margin) {
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if (drag_area_margin_end == p_margin) {
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return;
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}
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drag_area_margin_end = p_margin;
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queue_sort();
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}
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int SplitContainer::get_drag_area_margin_end() const {
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return drag_area_margin_end;
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}
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void SplitContainer::set_drag_area_offset(int p_offset) {
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if (drag_area_offset == p_offset) {
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return;
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}
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drag_area_offset = p_offset;
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queue_sort();
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}
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int SplitContainer::get_drag_area_offset() const {
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return drag_area_offset;
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}
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void SplitContainer::set_show_drag_area_enabled(bool p_enabled) {
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show_drag_area = p_enabled;
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dragging_area_control->queue_redraw();
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}
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bool SplitContainer::is_show_drag_area_enabled() const {
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return show_drag_area;
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}
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void SplitContainer::_bind_methods() {
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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("clamp_split_offset"), &SplitContainer::clamp_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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ClassDB::bind_method(D_METHOD("set_vertical", "vertical"), &SplitContainer::set_vertical);
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ClassDB::bind_method(D_METHOD("is_vertical"), &SplitContainer::is_vertical);
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ClassDB::bind_method(D_METHOD("set_dragging_enabled", "dragging_enabled"), &SplitContainer::set_dragging_enabled);
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ClassDB::bind_method(D_METHOD("is_dragging_enabled"), &SplitContainer::is_dragging_enabled);
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ClassDB::bind_method(D_METHOD("set_drag_area_margin_begin", "margin"), &SplitContainer::set_drag_area_margin_begin);
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ClassDB::bind_method(D_METHOD("get_drag_area_margin_begin"), &SplitContainer::get_drag_area_margin_begin);
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ClassDB::bind_method(D_METHOD("set_drag_area_margin_end", "margin"), &SplitContainer::set_drag_area_margin_end);
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ClassDB::bind_method(D_METHOD("get_drag_area_margin_end"), &SplitContainer::get_drag_area_margin_end);
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ClassDB::bind_method(D_METHOD("set_drag_area_offset", "offset"), &SplitContainer::set_drag_area_offset);
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ClassDB::bind_method(D_METHOD("get_drag_area_offset"), &SplitContainer::get_drag_area_offset);
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ClassDB::bind_method(D_METHOD("set_drag_area_highlight_in_editor", "drag_area_highlight_in_editor"), &SplitContainer::set_show_drag_area_enabled);
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ClassDB::bind_method(D_METHOD("is_drag_area_highlight_in_editor_enabled"), &SplitContainer::is_show_drag_area_enabled);
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ClassDB::bind_method(D_METHOD("get_drag_area_control"), &SplitContainer::get_drag_area_control);
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ADD_SIGNAL(MethodInfo("dragged", PropertyInfo(Variant::INT, "offset")));
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ADD_SIGNAL(MethodInfo("drag_started"));
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ADD_SIGNAL(MethodInfo("drag_ended"));
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ADD_PROPERTY(PropertyInfo(Variant::INT, "split_offset", PROPERTY_HINT_NONE, "suffix:px"), "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::BOOL, "dragging_enabled"), "set_dragging_enabled", "is_dragging_enabled");
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ADD_PROPERTY(PropertyInfo(Variant::INT, "dragger_visibility", PROPERTY_HINT_ENUM, "Visible,Hidden,Hidden and Collapsed"), "set_dragger_visibility", "get_dragger_visibility");
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ADD_PROPERTY(PropertyInfo(Variant::BOOL, "vertical"), "set_vertical", "is_vertical");
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ADD_GROUP("Drag Area", "drag_area_");
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ADD_PROPERTY(PropertyInfo(Variant::INT, "drag_area_margin_begin", PROPERTY_HINT_NONE, "suffix:px"), "set_drag_area_margin_begin", "get_drag_area_margin_begin");
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ADD_PROPERTY(PropertyInfo(Variant::INT, "drag_area_margin_end", PROPERTY_HINT_NONE, "suffix:px"), "set_drag_area_margin_end", "get_drag_area_margin_end");
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ADD_PROPERTY(PropertyInfo(Variant::INT, "drag_area_offset", PROPERTY_HINT_NONE, "suffix:px"), "set_drag_area_offset", "get_drag_area_offset");
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ADD_PROPERTY(PropertyInfo(Variant::BOOL, "drag_area_highlight_in_editor"), "set_drag_area_highlight_in_editor", "is_drag_area_highlight_in_editor_enabled");
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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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BIND_THEME_ITEM(Theme::DATA_TYPE_CONSTANT, SplitContainer, separation);
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BIND_THEME_ITEM(Theme::DATA_TYPE_CONSTANT, SplitContainer, minimum_grab_thickness);
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BIND_THEME_ITEM(Theme::DATA_TYPE_CONSTANT, SplitContainer, autohide);
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BIND_THEME_ITEM_CUSTOM(Theme::DATA_TYPE_ICON, SplitContainer, grabber_icon, "grabber");
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BIND_THEME_ITEM_CUSTOM(Theme::DATA_TYPE_ICON, SplitContainer, grabber_icon_h, "h_grabber");
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BIND_THEME_ITEM_CUSTOM(Theme::DATA_TYPE_ICON, SplitContainer, grabber_icon_v, "v_grabber");
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BIND_THEME_ITEM_CUSTOM(Theme::DATA_TYPE_STYLEBOX, SplitContainer, split_bar_background, "split_bar_background");
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}
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SplitContainer::SplitContainer(bool p_vertical) {
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vertical = p_vertical;
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dragging_area_control = memnew(SplitContainerDragger);
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add_child(dragging_area_control, false, Node::INTERNAL_MODE_BACK);
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}
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