CProgressBar.cpp

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/* Copyright (C) 2009 Wildfire Games.
 * This file is part of 0 A.D.
 *
 * 0 A.D. 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.
 *
 * 0 A.D. 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 0 A.D.  If not, see <http://www.gnu.org/licenses/>.
 */

/*
CProgressBar
*/

#include "precompiled.h"
#include "GUI.h"
#include "CProgressBar.h"

#include "lib/ogl.h"


//-------------------------------------------------------------------
//  Constructor / Destructor
//-------------------------------------------------------------------
CProgressBar::CProgressBar()
{
    AddSetting(GUIST_CGUISpriteInstance,    "sprite_background");
    AddSetting(GUIST_CGUISpriteInstance,    "sprite_bar");
    AddSetting(GUIST_float,                 "caption"); // aka value from 0 to 100
    AddSetting(GUIST_CStrW,                 "tooltip");
    AddSetting(GUIST_CStr,                  "tooltip_style");
}

CProgressBar::~CProgressBar()
{
}

void CProgressBar::HandleMessage(SGUIMessage &Message)
{
    // Important
    IGUIObject::HandleMessage(Message);

    switch (Message.type)
    {
    case GUIM_SETTINGS_UPDATED:
        // Update scroll-bar
        // TODO Gee: (2004-09-01) Is this really updated each time it should?
        if (Message.value == CStr("caption"))
        {
            float value;
            GUI<float>::GetSetting(this, "caption", value);
            if (value > 100.f)
                GUI<float>::SetSetting(this, "caption", 100.f);
            else
            if (value < 0.f)
                GUI<float>::SetSetting(this, "caption", 0.f);
        }
        break;
    default:
        break;
    }
}

void CProgressBar::Draw() 
{
    if (GetGUI())
    {
        float bz = GetBufferedZ();

        CGUISpriteInstance *sprite_background, *sprite_bar;
        int cell_id = 0;
        float value = 0;
        GUI<CGUISpriteInstance>::GetSettingPointer(this, "sprite_background", sprite_background);
        GUI<CGUISpriteInstance>::GetSettingPointer(this, "sprite_bar", sprite_bar);
        GUI<float>::GetSetting(this, "caption", value);

        GetGUI()->DrawSprite(*sprite_background, cell_id, bz, m_CachedActualSize);


        // Get size of bar (notice it is drawn slightly closer, to appear above the background)
        CRect bar_size(m_CachedActualSize.left, m_CachedActualSize.top,
                       m_CachedActualSize.left+m_CachedActualSize.GetWidth()*(value/100.f), m_CachedActualSize.bottom);
        GetGUI()->DrawSprite(*sprite_bar, cell_id, bz+0.01f, bar_size);
    }
}