AAdvancedGridLayout.h

/*
 * AUI Framework - Declarative UI toolkit for modern C++20
 * Copyright (C) 2020-2024 Alex2772 and Contributors
 *
 * SPDX-License-Identifier: MPL-2.0
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */
 
#pragma once
 
#include "ALayout.h"
 
class API_AUI_VIEWS AAdvancedGridLayout: public ALayout {
public:
 
    AAdvancedGridLayout(int cellsX, int cellsY);
 
    virtual ~AAdvancedGridLayout() = default;
 
    _<AView> getViewAt(size_t index) {
        return mCells.at(index).view;
    }
 
    void setViewAt(size_t index, _<AView> view) {
        mCells.at(index).view = view;
    }
 
    void onResize(int x, int y, int width, int height) override;
    void addView(const _<AView>& view, int x, int y);
 
    void addView(const _<AView>& view, AOptional<size_t> index) override;
 
    void removeView(aui::no_escape<AView> view, size_t index) override;
 
    int getMinimumWidth() override;
 
    int getMinimumHeight() override;
 
    int indexOf(_<AView> view);
 
    AVector<_<AView>> getAllViews() override;
 
protected:
    struct CompositionCache {
        unsigned expandingSum = 0;
        int minSize = 0;
 
        int finalPos = 0;
        int finalSize = 0;
    };
 
    struct GridCell {
        _<AView> view;
        int x, y;
 
        operator _<AView>() const {
            return view;
        }
    };
 
    int mCurrentIndex = 0;
    int cellsX, cellsY;
    unsigned mSpacing = 0;
 
    AVector<GridCell> mCells;
    AVector<int> mIndices;
 
protected:
    int& indexAt(int x, int y);
 
    AVector<_<AView>> getRow(int row);
    AVector<_<AView>> getColumn(int column);
 
    virtual void prepareCache(AVector<CompositionCache>& columns, AVector<CompositionCache>& rows);
 
};