/*************************************************************************/ /* split_container.cpp */ /*************************************************************************/ /* This file is part of: */ /* GODOT ENGINE */ /* https://godotengine.org */ /*************************************************************************/ /* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */ /* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */ /* */ /* Permission is hereby granted, free of charge, to any person obtaining */ /* a copy of this software and associated documentation files (the */ /* "Software"), to deal in the Software without restriction, including */ /* without limitation the rights to use, copy, modify, merge, publish, */ /* distribute, sublicense, and/or sell copies of the Software, and to */ /* permit persons to whom the Software is furnished to do so, subject to */ /* the following conditions: */ /* */ /* The above copyright notice and this permission notice shall be */ /* included in all copies or substantial portions of the Software. */ /* */ /* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */ /* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */ /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/ /* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */ /* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */ /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */ /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ /*************************************************************************/ #include "split_container.h" #include "label.h" #include "margin_container.h" Control *SplitContainer::_getch(int p_idx) const { int idx = 0; for (int i = 0; i < get_child_count(); i++) { Control *c = Object::cast_to<Control>(get_child(i)); if (!c || !c->is_visible_in_tree()) continue; if (c->is_set_as_toplevel()) continue; if (idx == p_idx) return c; idx++; } return NULL; } void SplitContainer::_resort() { int axis = vertical ? 1 : 0; Control *first = _getch(0); Control *second = _getch(1); // If we have only one element if (!first || !second) { if (first) { fit_child_in_rect(first, Rect2(Point2(), get_size())); } else if (second) { fit_child_in_rect(second, Rect2(Point2(), get_size())); } return; } // Determine expanded children bool first_expanded = (vertical ? first->get_v_size_flags() : first->get_h_size_flags()) & SIZE_EXPAND; bool second_expanded = (vertical ? second->get_v_size_flags() : second->get_h_size_flags()) & SIZE_EXPAND; // Determine the separation between items Ref<Texture2D> g = get_icon("grabber"); int sep = get_constant("separation"); sep = (dragger_visibility != DRAGGER_HIDDEN_COLLAPSED) ? MAX(sep, vertical ? g->get_height() : g->get_width()) : 0; // Compute the minimum size Size2 ms_first = first->get_combined_minimum_size(); Size2 ms_second = second->get_combined_minimum_size(); // Compute the separator position without the split offset float ratio = first->get_stretch_ratio() / (first->get_stretch_ratio() + second->get_stretch_ratio()); int no_offset_middle_sep = 0; if (first_expanded && second_expanded) { no_offset_middle_sep = get_size()[axis] * ratio - sep / 2; } else if (first_expanded) { no_offset_middle_sep = get_size()[axis] - ms_second[axis] - sep; } else { no_offset_middle_sep = ms_first[axis]; } // Compute the final middle separation middle_sep = no_offset_middle_sep; if (!collapsed) { int clamped_split_offset = CLAMP(split_offset, ms_first[axis] - no_offset_middle_sep, (get_size()[axis] - ms_second[axis] - sep) - no_offset_middle_sep); middle_sep += clamped_split_offset; if (should_clamp_split_offset) { split_offset = clamped_split_offset; _change_notify("split_offset"); should_clamp_split_offset = false; } } if (vertical) { fit_child_in_rect(first, Rect2(Point2(0, 0), Size2(get_size().width, middle_sep))); int sofs = middle_sep + sep; fit_child_in_rect(second, Rect2(Point2(0, sofs), Size2(get_size().width, get_size().height - sofs))); } else { fit_child_in_rect(first, Rect2(Point2(0, 0), Size2(middle_sep, get_size().height))); int sofs = middle_sep + sep; fit_child_in_rect(second, Rect2(Point2(sofs, 0), Size2(get_size().width - sofs, get_size().height))); } update(); } Size2 SplitContainer::get_minimum_size() const { /* Calculate MINIMUM SIZE */ Size2i minimum; Ref<Texture2D> g = get_icon("grabber"); int sep = get_constant("separation"); sep = (dragger_visibility != DRAGGER_HIDDEN_COLLAPSED) ? MAX(sep, vertical ? g->get_height() : g->get_width()) : 0; for (int i = 0; i < 2; i++) { if (!_getch(i)) break; if (i == 1) { if (vertical) minimum.height += sep; else minimum.width += sep; } Size2 ms = _getch(i)->get_combined_minimum_size(); if (vertical) { minimum.height += ms.height; minimum.width = MAX(minimum.width, ms.width); } else { minimum.width += ms.width; minimum.height = MAX(minimum.height, ms.height); } } return minimum; } void SplitContainer::_notification(int p_what) { switch (p_what) { case NOTIFICATION_SORT_CHILDREN: { _resort(); } break; case NOTIFICATION_MOUSE_EXIT: { mouse_inside = false; if (get_constant("autohide")) update(); } break; case NOTIFICATION_DRAW: { if (!_getch(0) || !_getch(1)) return; if (collapsed || (!dragging && !mouse_inside && get_constant("autohide"))) return; if (dragger_visibility != DRAGGER_VISIBLE) return; int sep = dragger_visibility != DRAGGER_HIDDEN_COLLAPSED ? get_constant("separation") : 0; Ref<Texture2D> tex = get_icon("grabber"); Size2 size = get_size(); if (vertical) draw_texture(tex, Point2i((size.x - tex->get_width()) / 2, middle_sep + (sep - tex->get_height()) / 2)); else draw_texture(tex, Point2i(middle_sep + (sep - tex->get_width()) / 2, (size.y - tex->get_height()) / 2)); } break; case NOTIFICATION_THEME_CHANGED: { minimum_size_changed(); } break; } } void SplitContainer::_gui_input(const Ref<InputEvent> &p_event) { if (collapsed || !_getch(0) || !_getch(1) || dragger_visibility != DRAGGER_VISIBLE) return; Ref<InputEventMouseButton> mb = p_event; if (mb.is_valid()) { if (mb->get_button_index() == BUTTON_LEFT) { if (mb->is_pressed()) { int sep = get_constant("separation"); if (vertical) { if (mb->get_position().y > middle_sep && mb->get_position().y < middle_sep + sep) { dragging = true; drag_from = mb->get_position().y; drag_ofs = split_offset; } } else { if (mb->get_position().x > middle_sep && mb->get_position().x < middle_sep + sep) { dragging = true; drag_from = mb->get_position().x; drag_ofs = split_offset; } } } else { dragging = false; } } } Ref<InputEventMouseMotion> mm = p_event; if (mm.is_valid()) { bool mouse_inside_state = false; if (vertical) mouse_inside_state = mm->get_position().y > middle_sep && mm->get_position().y < middle_sep + get_constant("separation"); else mouse_inside_state = mm->get_position().x > middle_sep && mm->get_position().x < middle_sep + get_constant("separation"); if (mouse_inside != mouse_inside_state) { mouse_inside = mouse_inside_state; if (get_constant("autohide")) update(); } if (!dragging) return; split_offset = drag_ofs + ((vertical ? mm->get_position().y : mm->get_position().x) - drag_from); should_clamp_split_offset = true; queue_sort(); emit_signal("dragged", get_split_offset()); } } Control::CursorShape SplitContainer::get_cursor_shape(const Point2 &p_pos) const { if (dragging) return (vertical ? CURSOR_VSPLIT : CURSOR_HSPLIT); if (!collapsed && _getch(0) && _getch(1) && dragger_visibility == DRAGGER_VISIBLE) { int sep = get_constant("separation"); if (vertical) { if (p_pos.y > middle_sep && p_pos.y < middle_sep + sep) return CURSOR_VSPLIT; } else { if (p_pos.x > middle_sep && p_pos.x < middle_sep + sep) return CURSOR_HSPLIT; } } return Control::get_cursor_shape(p_pos); } void SplitContainer::set_split_offset(int p_offset) { if (split_offset == p_offset) return; split_offset = p_offset; queue_sort(); } int SplitContainer::get_split_offset() const { return split_offset; } void SplitContainer::clamp_split_offset() { should_clamp_split_offset = true; queue_sort(); } void SplitContainer::set_collapsed(bool p_collapsed) { if (collapsed == p_collapsed) return; collapsed = p_collapsed; queue_sort(); } void SplitContainer::set_dragger_visibility(DraggerVisibility p_visibility) { dragger_visibility = p_visibility; queue_sort(); update(); } SplitContainer::DraggerVisibility SplitContainer::get_dragger_visibility() const { return dragger_visibility; } bool SplitContainer::is_collapsed() const { return collapsed; } void SplitContainer::_bind_methods() { ClassDB::bind_method(D_METHOD("_gui_input"), &SplitContainer::_gui_input); ClassDB::bind_method(D_METHOD("set_split_offset", "offset"), &SplitContainer::set_split_offset); ClassDB::bind_method(D_METHOD("get_split_offset"), &SplitContainer::get_split_offset); ClassDB::bind_method(D_METHOD("clamp_split_offset"), &SplitContainer::clamp_split_offset); ClassDB::bind_method(D_METHOD("set_collapsed", "collapsed"), &SplitContainer::set_collapsed); ClassDB::bind_method(D_METHOD("is_collapsed"), &SplitContainer::is_collapsed); ClassDB::bind_method(D_METHOD("set_dragger_visibility", "mode"), &SplitContainer::set_dragger_visibility); ClassDB::bind_method(D_METHOD("get_dragger_visibility"), &SplitContainer::get_dragger_visibility); ADD_SIGNAL(MethodInfo("dragged", PropertyInfo(Variant::INT, "offset"))); ADD_PROPERTY(PropertyInfo(Variant::INT, "split_offset"), "set_split_offset", "get_split_offset"); ADD_PROPERTY(PropertyInfo(Variant::BOOL, "collapsed"), "set_collapsed", "is_collapsed"); ADD_PROPERTY(PropertyInfo(Variant::INT, "dragger_visibility", PROPERTY_HINT_ENUM, "Visible,Hidden,Hidden & Collapsed"), "set_dragger_visibility", "get_dragger_visibility"); BIND_ENUM_CONSTANT(DRAGGER_VISIBLE); BIND_ENUM_CONSTANT(DRAGGER_HIDDEN); BIND_ENUM_CONSTANT(DRAGGER_HIDDEN_COLLAPSED); } SplitContainer::SplitContainer(bool p_vertical) { mouse_inside = false; split_offset = 0; should_clamp_split_offset = false; middle_sep = 0; vertical = p_vertical; dragging = false; collapsed = false; dragger_visibility = DRAGGER_VISIBLE; }