/*************************************************************************/ /* grid_container.cpp */ /*************************************************************************/ /* This file is part of: */ /* GODOT ENGINE */ /* https://godotengine.org */ /*************************************************************************/ /* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */ /* Copyright (c) 2014-2021 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 "grid_container.h" void GridContainer::_notification(int p_what) { switch (p_what) { case NOTIFICATION_SORT_CHILDREN: { Map<int, int> col_minw; // Max of min_width of all controls in each col (indexed by col). Map<int, int> row_minh; // Max of min_height of all controls in each row (indexed by row). Set<int> col_expanded; // Columns which have the SIZE_EXPAND flag set. Set<int> row_expanded; // Rows which have the SIZE_EXPAND flag set. int hsep = get_theme_constant("hseparation"); int vsep = get_theme_constant("vseparation"); int max_col = MIN(get_child_count(), columns); int max_row = ceil((float)get_child_count() / (float)columns); // Compute the per-column/per-row data. int valid_controls_index = 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; } int row = valid_controls_index / columns; int col = valid_controls_index % columns; valid_controls_index++; Size2i ms = c->get_combined_minimum_size(); if (col_minw.has(col)) { col_minw[col] = MAX(col_minw[col], ms.width); } else { col_minw[col] = ms.width; } if (row_minh.has(row)) { row_minh[row] = MAX(row_minh[row], ms.height); } else { row_minh[row] = ms.height; } if (c->get_h_size_flags() & SIZE_EXPAND) { col_expanded.insert(col); } if (c->get_v_size_flags() & SIZE_EXPAND) { row_expanded.insert(row); } } // Consider all empty columns expanded. for (int i = valid_controls_index; i < columns; i++) { col_expanded.insert(i); } // Evaluate the remaining space for expanded columns/rows. Size2 remaining_space = get_size(); for (Map<int, int>::Element *E = col_minw.front(); E; E = E->next()) { if (!col_expanded.has(E->key())) { remaining_space.width -= E->get(); } } for (Map<int, int>::Element *E = row_minh.front(); E; E = E->next()) { if (!row_expanded.has(E->key())) { remaining_space.height -= E->get(); } } remaining_space.height -= vsep * MAX(max_row - 1, 0); remaining_space.width -= hsep * MAX(max_col - 1, 0); bool can_fit = false; while (!can_fit && col_expanded.size() > 0) { // Check if all minwidth constraints are OK if we use the remaining space. can_fit = true; int max_index = col_expanded.front()->get(); for (Set<int>::Element *E = col_expanded.front(); E; E = E->next()) { if (col_minw[E->get()] > col_minw[max_index]) { max_index = E->get(); } if (can_fit && (remaining_space.width / col_expanded.size()) < col_minw[E->get()]) { can_fit = false; } } // If not, the column with maximum minwidth is not expanded. if (!can_fit) { col_expanded.erase(max_index); remaining_space.width -= col_minw[max_index]; } } can_fit = false; while (!can_fit && row_expanded.size() > 0) { // Check if all minheight constraints are OK if we use the remaining space. can_fit = true; int max_index = row_expanded.front()->get(); for (Set<int>::Element *E = row_expanded.front(); E; E = E->next()) { if (row_minh[E->get()] > row_minh[max_index]) { max_index = E->get(); } if (can_fit && (remaining_space.height / row_expanded.size()) < row_minh[E->get()]) { can_fit = false; } } // If not, the row with maximum minheight is not expanded. if (!can_fit) { row_expanded.erase(max_index); remaining_space.height -= row_minh[max_index]; } } // Finally, fit the nodes. int col_expand = col_expanded.size() > 0 ? remaining_space.width / col_expanded.size() : 0; int row_expand = row_expanded.size() > 0 ? remaining_space.height / row_expanded.size() : 0; bool rtl = is_layout_rtl(); int col_ofs = 0; int row_ofs = 0; valid_controls_index = 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; } int row = valid_controls_index / columns; int col = valid_controls_index % columns; valid_controls_index++; if (col == 0) { if (rtl) { col_ofs = get_size().width; } else { col_ofs = 0; } if (row > 0) { row_ofs += (row_expanded.has(row - 1) ? row_expand : row_minh[row - 1]) + vsep; } } if (rtl) { Size2 s(col_expanded.has(col) ? col_expand : col_minw[col], row_expanded.has(row) ? row_expand : row_minh[row]); Point2 p(col_ofs - s.width, row_ofs); fit_child_in_rect(c, Rect2(p, s)); col_ofs -= s.width + hsep; } else { Point2 p(col_ofs, row_ofs); Size2 s(col_expanded.has(col) ? col_expand : col_minw[col], row_expanded.has(row) ? row_expand : row_minh[row]); fit_child_in_rect(c, Rect2(p, s)); col_ofs += s.width + hsep; } } } break; case NOTIFICATION_THEME_CHANGED: { minimum_size_changed(); } break; case NOTIFICATION_TRANSLATION_CHANGED: case NOTIFICATION_LAYOUT_DIRECTION_CHANGED: { queue_sort(); } break; } } void GridContainer::set_columns(int p_columns) { ERR_FAIL_COND(p_columns < 1); columns = p_columns; queue_sort(); minimum_size_changed(); } int GridContainer::get_columns() const { return columns; } void GridContainer::_bind_methods() { ClassDB::bind_method(D_METHOD("set_columns", "columns"), &GridContainer::set_columns); ClassDB::bind_method(D_METHOD("get_columns"), &GridContainer::get_columns); ADD_PROPERTY(PropertyInfo(Variant::INT, "columns", PROPERTY_HINT_RANGE, "1,1024,1"), "set_columns", "get_columns"); } Size2 GridContainer::get_minimum_size() const { Map<int, int> col_minw; Map<int, int> row_minh; int hsep = get_theme_constant("hseparation"); int vsep = get_theme_constant("vseparation"); int max_row = 0; int max_col = 0; int valid_controls_index = 0; for (int i = 0; i < get_child_count(); i++) { Control *c = Object::cast_to<Control>(get_child(i)); if (!c || !c->is_visible()) { continue; } int row = valid_controls_index / columns; int col = valid_controls_index % columns; valid_controls_index++; Size2i ms = c->get_combined_minimum_size(); if (col_minw.has(col)) { col_minw[col] = MAX(col_minw[col], ms.width); } else { col_minw[col] = ms.width; } if (row_minh.has(row)) { row_minh[row] = MAX(row_minh[row], ms.height); } else { row_minh[row] = ms.height; } max_col = MAX(col, max_col); max_row = MAX(row, max_row); } Size2 ms; for (Map<int, int>::Element *E = col_minw.front(); E; E = E->next()) { ms.width += E->get(); } for (Map<int, int>::Element *E = row_minh.front(); E; E = E->next()) { ms.height += E->get(); } ms.height += vsep * max_row; ms.width += hsep * max_col; return ms; } GridContainer::GridContainer() {}