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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
* layout.h
*
* Sat Mar 21 15:12:36 CET 2015
* Copyright 2015 Bent Bisballe Nyeng
* deva@aasimon.org
****************************************************************************/
/*
* This file is part of DrumGizmo.
*
* DrumGizmo 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 3 of the License, or
* (at your option) any later version.
*
* DrumGizmo 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 DrumGizmo; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#pragma once
#include <list>
#include <cstdlib>
#include "notifier.h"
namespace GUI {
class Layout;
class LayoutItem {
public:
LayoutItem();
virtual ~LayoutItem();
void setLayoutParent(Layout* parent);
virtual void resize(int width, int height) = 0;
virtual void move(size_t x, size_t y) = 0;
virtual int x() = 0;
virtual int y() = 0;
virtual size_t width() = 0;
virtual size_t height() = 0;
private:
Layout* parent;
};
//! \brief Abtract Layout class.
class Layout : public Listener
{
public:
Layout(LayoutItem *parent);
virtual ~Layout() {}
virtual void addItem(LayoutItem *item);
virtual void removeItem(LayoutItem *item);
//! \brief Reimplement this method to create a new Layout rule.
virtual void layout() = 0;
protected:
void sizeChanged(int width, int height);
LayoutItem *parent;
typedef std::list<LayoutItem *> LayoutItemList;
LayoutItemList items;
};
//! \brief Abstract box layout
class BoxLayout : public Layout {
public:
BoxLayout(LayoutItem *parent);
//! \brief Set to false to only move the items, not scale them.
void setResizeChildren(bool resize_children);
void setSpacing(size_t spacing);
// From Layout:
virtual void layout() override = 0;
protected:
bool resizeChildren{false};
size_t spacing{0};
};
enum class HAlignment {
left,
center,
right,
};
//! \brief A Layout that lays out its elements vertically.
class VBoxLayout : public BoxLayout {
public:
VBoxLayout(LayoutItem *parent);
void setHAlignment(HAlignment alignment);
// From BoxLayout:
virtual void layout() override;
protected:
HAlignment align;
};
enum class VAlignment {
top,
center,
bottom,
};
//! \brief A Layout that lays out its elements vertically.
class HBoxLayout : public BoxLayout {
public:
HBoxLayout(LayoutItem *parent);
void setVAlignment(VAlignment alignment);
// From BoxLayout:
virtual void layout() override;
protected:
VAlignment align;
};
} // GUI::
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