wg_progress.cpp

一个小巧的嵌入式图形系统wGUI, 可以用VC编译

// wg_progress.cpp
//
// CProgress class implementation
//
//
// Copyright (c) 2002 Rob Wiskow
// [e-mail]
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser 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
//


#include "wgui_include_config.h"
#include "wg_progress.h"


namespace wGui
{

CProgress::CProgress(const CRect& WindowRect, CWindow* pParent, CRGBColor BarColor) :
	CWindow(WindowRect, pParent),
	m_iMin(0),
	m_iMax(100),
	m_iProgress(0),
	m_BarColor(BarColor)
{
  m_sClassName = "CProgress";
	m_BGColor = DEFAULT_FG_COLOR;
}


CProgress::~CProgress(void)
{

}


void CProgress::SetLimits(int iMin, int iMax)
{
	m_iMin = iMin;
	m_iMax = iMax;
	StartDrawProc();
}


void CProgress::SetProgress(int iProgress)
{
	m_iProgress = iProgress;
	StartDrawProc();
}


void CProgress::Draw(void) const
{
	CWindow::Draw();

	CRect SubRect(m_WindowRect);
	SubRect.Grow(-1);
	CPainter Painter(m_pSDLSurface);
	Painter.DrawRect(m_WindowRect, false, COLOR_BLACK);
	Painter.DrawRect(SubRect, false, COLOR_LIGHTGRAY);
	Painter.DrawHLine(SubRect.Left(), SubRect.Right(), SubRect.Top(), COLOR_DARKGRAY);
	Painter.DrawVLine(SubRect.Top(), SubRect.Bottom(), SubRect.Left(), COLOR_DARKGRAY);
	SubRect.Grow(-2);
	if (m_iProgress > m_iMin)
	{
		if (m_iProgress < m_iMax)
		{
			SubRect.SetRight(static_cast<int>(SubRect.Left() + SubRect.Width() * (static_cast<double>(m_iProgress - m_iMin) / (m_iMax - m_iMin))));
		}
		Painter.DrawRect(SubRect, true, m_BarColor, m_BarColor);
	}
}

}