CScroll.h

/*
╔══════════════════════════════════════════════════════════════════════════════╗
║                       SIMPLY POWERFUL TOOLKIT (SPTK)                         ║
╟──────────────────────────────────────────────────────────────────────────────╢
║  copyright            © 1999-2022 Alexey Parshin. All rights reserved.       ║
║  email                alexeyp@gmail.com                                      ║
╚══════════════════════════════════════════════════════════════════════════════╝
┌──────────────────────────────────────────────────────────────────────────────┐
│   This library is free software; you can redistribute it and/or modify it    │
│   under the terms of the GNU Library General Public License as published by  │
│   the Free Software Foundation; either version 2 of the License, or (at your │
│   option) any later version.                                                 │
│                                                                              │
│   This library 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 Library   │
│   General Public License for more details.                                   │
│                                                                              │
│   You should have received a copy of the GNU Library General Public License  │
│   along with this library; if not, write to the Free Software Foundation,    │
│   Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.               │
│                                                                              │
│   Please report all bugs and problems to alexeyp@gmail.com.                  │
└──────────────────────────────────────────────────────────────────────────────┘
*/
 
#pragma once
 
#include <FL/Fl_Group.H>
 
#include <sptk5/gui/CLayoutClient.h>
#include <sptk5/gui/CLayoutManager.h>
#include <sptk5/gui/CScrollBar.h>
 
namespace sptk {
 
enum CScrollbarMode
{ // values for type()
    HORIZONTAL = 1,
    VERTICAL = 2,
    BOTH = 3,
    ALWAYS_ON = 4,
    HORIZONTAL_ALWAYS = 5,
    VERTICAL_ALWAYS = 6,
    BOTH_ALWAYS = 7
};
 
class SP_EXPORT CScroll
    : public ::Fl_Group
    , public CLayoutManager
{
 
    int m_xposition {0};
 
    int m_yposition {0};
 
    int m_oldx {0};
 
    int m_oldy {0};
 
    static void hscrollbar_cb(Fl_Widget*, void*);
 
    static void scrollbar_cb(Fl_Widget*, void*);
 
    void ctor_init();
 
    void fix_scrollbar_order();
 
    static void draw_clip(void* v, int X, int Y, int W, int H);
 
    void bbox(int& X, int& Y, int& W, int& H);
 
public:
    CScroll(const char* label = 0, int layoutSize = 10, CLayoutAlign layoutAlign = CLayoutAlign::TOP);
 
#ifdef __COMPATIBILITY_MODE__
    CScroll(int x, int y, int w, int h, const char* label = 0L);
#endif
 
    CScrollBar scrollbar;
 
    CScrollBar hscrollbar;
 
 
    void resize(int x, int y, int w, int h) override;
 
    void draw() override;
 
    bool preferredSize(int& w, int& h) override;
 
    void clear() override;
 
    virtual void position(int X, int Y);
 
    int xposition() const
    {
        return m_xposition;
    }
 
    int yposition() const
    {
        return m_yposition;
    }
 
    int handle(int) override;
 
    static CLayoutClient* creator(const xdoc::SNode& node);
 
    String className() const override
    {
        return "scroll";
    }
};
} // namespace sptk