53 lines
1.7 KiB
Dart
53 lines
1.7 KiB
Dart
/*
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* Copyright (c) 2024-2026 Fabian Freund.
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*
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* This file is part of WebLibre
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* (see https://weblibre.eu).
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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import 'dart:ui';
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int calculateCrossAxisItemCount({
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required double screenWidth,
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required double horizontalPadding,
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required double crossAxisSpacing,
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}) {
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final totalHorizontalPadding = horizontalPadding * 2;
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final availableWidth =
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screenWidth - totalHorizontalPadding - crossAxisSpacing;
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final crossAxisCount = availableWidth ~/ 180.0;
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return crossAxisCount;
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}
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Size calculateItemSize({
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required double screenWidth,
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required double childAspectRatio,
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required double horizontalPadding,
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required double mainAxisSpacing,
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required double crossAxisSpacing,
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required int crossAxisCount,
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}) {
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final totalHorizontalPadding = horizontalPadding * 2;
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final totalCrossAxisSpacing = crossAxisSpacing * (crossAxisCount - 1);
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final availableWidth =
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screenWidth - totalHorizontalPadding - totalCrossAxisSpacing;
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final itemWidth = availableWidth / crossAxisCount;
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final itemHeight = itemWidth / childAspectRatio;
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return Size(itemWidth, itemHeight + mainAxisSpacing);
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}
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