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ScrollBarV.cpp

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/*
Copyright (C) 2004  Anders Hedstrom

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 (at your option) 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, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/
#include <SDL.h>
#include "guitypedefs.h"
#include "guicolors.h"
#ifdef _WIN32
#pragma warning(push)

#include <yvals.h> // warning numbers get enabled in yvals.h 

#pragma warning(disable: 4251)  
#pragma warning(disable: 4786)  // identifier was truncated to 'number' characters in the debug information

// BUG: C4786 Warning Is Not Disabled with #pragma Warning
// STATUS: Microsoft has confirmed this to be a bug in the Microsoft product. This warning can be ignored.
// This occured only in the <map> container.

#include <sge.h>

#pragma warning(pop)
#else
#include <sge.h>
#endif
//#include <iotm/Mutex.h>
#include "SDL_prim.h"

#include "TTFont.h"
#include "SDLControl.h"
#include "Surface.h"
#include "Static.h"
#include "Button.h"
#include "HotButton.h"
#include "ScrollBarV.h"


namespace gui
{


ScrollBarV::ScrollBarV(Surface *s,coord_t x,coord_t y,coord_t w,coord_t h,SurfaceHelper *sh)
:Surface(s,x,y,w,h,sh)
,m_up(this, w - SBSIZE, 0, BUTTONSTYLE_SBUP)
,m_down(this, w - SBSIZE, h - SBSIZE, BUTTONSTYLE_SBDOWN)
,m_pos(0)
,m_max(100)
,m_step(1)
{
        SetBgColor(128,128,0);
        SetFgColor(255,255,128);
        SetFrameWidth(0);
        SetFrameColor(0,255,128);

        AddChild(&m_up);
        AddChild(&m_down);
}


ScrollBarV::ScrollBarV(Surface *s,SurfaceHelper *sh)
:Surface(s,s -> GetClientRectPtr() -> w - SBSIZE,0,
                SBSIZE,
                s -> GetClientRectPtr() -> h - SBSIZE, /* avoid hotspot */
                sh)
,m_up(this, GetW() - SBSIZE, 0, BUTTONSTYLE_SBUP)
,m_down(this, GetW() - SBSIZE, GetH() - SBSIZE, BUTTONSTYLE_SBDOWN)
,m_pos(0)
,m_max(100)
,m_step(1)
{
        SetBgColor(128,128,0);
        SetFgColor(255,255,128);
        SetFrameWidth(0);
        SetFrameColor(0,255,128);

        AddChild(&m_up);
        AddChild(&m_down);
}


ScrollBarV::~ScrollBarV()
{
}


void ScrollBarV::SetPos(long l)
{
        m_pos = l;
        SetDirty(true);
}


void ScrollBarV::SetMax(long l,long step)
{
        m_max = l;
        m_step = step;
}


long ScrollBarV::GetPos()
{
        return m_pos;
}


void ScrollBarV::OnEvent(surface_event_t *pstEvent)
{
        if (pstEvent -> type == GUI_EVENT_BUTTON)
        {
                if (pstEvent -> local_id == m_down.GetLocalID())
                {
                        if (m_pos + m_step < m_max)
                        {
                                m_pos += m_step;
                                SetDirty(true);
                        }
                }
                else
                if (pstEvent -> local_id == m_up.GetLocalID())
                {
                        if (m_pos - m_step >= 0)
                        {
                                m_pos -= m_step;
                                SetDirty(true);
                        }
                }
        }
}


void ScrollBarV::Draw()
{
        SDL_Rect a = GetClientRect();
        long range = a.h - 2 * SBSIZE - SBSIZE / 2;
        long y;
        long h;

        SDL_FillRect(m_screen, &a, GetBgColor());

        y = (m_pos * range) / m_max + SBSIZE;
        h = (m_step * range) / m_max;
        if (h < SBSIZE / 2)
        {
                h = SBSIZE / 2;
        }
        a.y = y;
        a.h = h;
        SDL_FillRect(m_screen, &a, GetFgColor());
        a.x++;
        a.y++;
        a.w -= 2;
        a.h -= 2;
        SDL_FillRect(m_screen, &a, GetBgColor());
}


} // namespace gui

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