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d95794ec8a
As many open source projects have started doing it, we're removing the current year from the copyright notice, so that we don't need to bump it every year. It seems like only the first year of publication is technically relevant for copyright notices, and even that seems to be something that many companies stopped listing altogether (in a version controlled codebase, the commits are a much better source of date of publication than a hardcoded copyright statement). We also now list Godot Engine contributors first as we're collectively the current maintainers of the project, and we clarify that the "exclusive" copyright of the co-founders covers the timespan before opensourcing (their further contributions are included as part of Godot Engine contributors). Also fixed "cf." Frenchism - it's meant as "refer to / see".
439 lines
14 KiB
C++
439 lines
14 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 "label.h"
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#include "margin_container.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->_getch(0) || !sc->_getch(1) || sc->dragger_visibility != SplitContainer::DRAGGER_VISIBLE) {
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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_middle_sep(true);
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dragging = true;
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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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}
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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_middle_sep(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->dragger_visibility == SplitContainer::DRAGGER_VISIBLE) {
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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->get_theme_constant(SNAME("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->get_theme_constant(SNAME("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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if (!dragging && !mouse_inside && sc->get_theme_constant(SNAME("autohide"))) {
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return;
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}
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Ref<Texture2D> tex = sc->get_theme_icon(SNAME("grabber"));
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draw_texture(tex, (get_size() - tex->get_size()) / 2);
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} break;
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}
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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(false); i++) {
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Control *c = Object::cast_to<Control>(get_child(i, false));
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if (!c || !c->is_visible()) {
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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 (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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void SplitContainer::_compute_middle_sep(bool p_clamp) {
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Control *first = _getch(0);
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Control *second = _getch(1);
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// Determine expanded children.
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bool first_expanded = (vertical ? first->get_v_size_flags() : first->get_h_size_flags()) & SIZE_EXPAND;
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bool second_expanded = (vertical ? second->get_v_size_flags() : second->get_h_size_flags()) & SIZE_EXPAND;
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// Compute the minimum size.
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int axis = vertical ? 1 : 0;
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int size = get_size()[axis];
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int ms_first = first->get_combined_minimum_size()[axis];
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int ms_second = second->get_combined_minimum_size()[axis];
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// Determine the separation between items.
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Ref<Texture2D> g = _get_grabber_icon();
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int sep = (dragger_visibility != DRAGGER_HIDDEN_COLLAPSED) ? MAX(theme_cache.separation, vertical ? g->get_height() : g->get_width()) : 0;
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// Compute the wished separation_point.
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int wished_middle_sep = 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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if (first_expanded && second_expanded) {
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float ratio = first->get_stretch_ratio() / (first->get_stretch_ratio() + second->get_stretch_ratio());
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wished_middle_sep = size * ratio - sep / 2 + split_offset_with_collapse;
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} else if (first_expanded) {
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wished_middle_sep = size - sep + split_offset_with_collapse;
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} else {
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wished_middle_sep = split_offset_with_collapse;
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}
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// Clamp the middle sep to acceptatble values.
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middle_sep = CLAMP(wished_middle_sep, ms_first, size - sep - ms_second);
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// Clamp the split_offset if requested.
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if (p_clamp) {
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split_offset -= wished_middle_sep - middle_sep;
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}
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}
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void SplitContainer::_resort() {
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Control *first = _getch(0);
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Control *second = _getch(1);
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// If we have only one element.
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if (!first || !second) {
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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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// If we have more that one.
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_compute_middle_sep(false);
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// Determine the separation between items.
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Ref<Texture2D> g = _get_grabber_icon();
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int sep = (dragger_visibility != DRAGGER_HIDDEN_COLLAPSED) ? MAX(theme_cache.separation, vertical ? g->get_height() : g->get_width()) : 0;
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// Move the children, including the dragger.
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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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if (is_layout_rtl()) {
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middle_sep = get_size().width - middle_sep - sep;
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fit_child_in_rect(second, 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(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(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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}
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// Handle the dragger visibility and position.
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if (dragger_visibility == DRAGGER_VISIBLE && !collapsed) {
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dragging_area_control->show();
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int dragger_ctrl_size = MAX(sep, theme_cache.minimum_grab_thickness);
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if (vertical) {
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dragging_area_control->set_rect(Rect2(Point2(0, middle_sep - (dragger_ctrl_size - sep) / 2), Size2(get_size().width, dragger_ctrl_size)));
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} else {
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dragging_area_control->set_rect(Rect2(Point2(middle_sep - (dragger_ctrl_size - sep) / 2, 0), Size2(dragger_ctrl_size, get_size().height)));
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}
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dragging_area_control->queue_redraw();
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} else {
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dragging_area_control->hide();
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}
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}
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Size2 SplitContainer::get_minimum_size() const {
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Size2i minimum;
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Ref<Texture2D> g = _get_grabber_icon();
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int sep = (dragger_visibility != DRAGGER_HIDDEN_COLLAPSED) ? MAX(theme_cache.separation, 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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}
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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 = _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::_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::_update_theme_item_cache() {
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Container::_update_theme_item_cache();
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theme_cache.separation = get_theme_constant(SNAME("separation"));
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theme_cache.minimum_grab_thickness = get_theme_constant(SNAME("minimum_grab_thickness"));
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theme_cache.autohide = get_theme_constant(SNAME("autohide"));
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theme_cache.grabber_icon = get_theme_icon(SNAME("grabber"));
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theme_cache.grabber_icon_h = get_theme_icon(SNAME("h_grabber"));
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theme_cache.grabber_icon_v = get_theme_icon(SNAME("v_grabber"));
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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 (!_getch(0) || !_getch(1)) {
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return;
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}
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_compute_middle_sep(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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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::_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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ADD_SIGNAL(MethodInfo("dragged", PropertyInfo(Variant::INT, "offset")));
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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::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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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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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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