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/*
* The ManaPlus Client
* Copyright (C) 2009 The Mana World Development Team
* Copyright (C) 2009-2010 The Mana Developers
* Copyright (C) 2011-2020 The ManaPlus Developers
*
* This file is part of The ManaPlus Client.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef GUI_WIDGETS_LAYOUTHELPER_H
#define GUI_WIDGETS_LAYOUTHELPER_H
#include "gui/widgets/layout.h"
#include "listeners/widgetlistener.h"
class BasicContainer2;
class ContainerPlacer;
/**
* A helper class for adding a layout to a Guichan container widget. The layout
* will register itself as a widget listener and relayout the widgets in the
* container dynamically on resize.
*/
class LayoutHelper final : public WidgetListener
{
public:
/**
* Constructor.
*/
explicit LayoutHelper(BasicContainer2 *const container);
A_DELETE_COPY(LayoutHelper)
/**
* Destructor.
*/
~LayoutHelper() override final;
/**
* Gets the layout handler.
*/
const Layout &getLayout() const A_WARN_UNUSED A_CONST;
/**
* Computes the position of the widgets according to the current
* layout. Resizes the managed container so that the layout fits.
*
* @note This function is meant to be called with fixed-size
* containers.
*
* @param w if non-zero, force the container to this width.
* @param h if non-zero, force the container to this height.
*/
void reflowLayout(int w,
int h);
/**
* Adds a widget to the container and sets it at given cell.
*/
LayoutCell &place(const int x,
const int y,
Widget *const wg,
const int w,
const int h);
/**
* Returns a proxy for adding widgets in an inner table of the layout.
*/
ContainerPlacer getPlacer(const int x, const int y) A_WARN_UNUSED;
/**
* Called whenever the managed container changes size.
*/
void widgetResized(const Event &event) override final;
private:
Layout mLayout; /**< Layout handler */
BasicContainer2 *mContainer; /**< Managed container */
};
#endif // GUI_WIDGETS_LAYOUTHELPER_H
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