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import java.awt.*;
//
//
// ProgressBar JavaBean v1.00
//
// Written by : David Reilly
// Release details : Public domain source/binary
// Last modification date : Tuesday, October 28, 1997
//
public class ProgressBar extends Canvas
{
int min, max, val;
protected float m_percentage;
protected Color m_textColor = Color.black;
protected boolean m_displayText = true;
public ProgressBar()
{
m_percentage = 0;
}
public void setMin(int v)
{ min=v; }
public void setMax(int v)
{ max=v; }
public void setValue(int v)
{
if( min <= v && v <= max )
{
val=v;
m_percentage= (float)(val-min)/(float)(max-min);
repaint();
}
}
public float getPercent()
{
return m_percentage;
}
public void setPercent( float percent )
{
if ( ( percent <= 1.0f ) && ( percent >= 0.0f) )
{
m_percentage = percent;
val = (int)((max-min)*m_percentage+(float)min+0.5);
}
repaint();
}
public boolean getDisplayText()
{
return m_displayText;
}
public boolean isDisplayText()
{
return m_displayText;
}
public void setDisplayText(boolean b)
{
m_displayText = b;
}
public Color getTextColor()
{
return m_textColor;
}
public void setTextColor(Color set_text)
{
m_textColor = set_text;
}
public void toggleDisplayText()
{
m_displayText = !m_displayText;
}
public void paint( Graphics g )
{
// Local variables
Color background;
Color foreground;
int width = getSize().width;
int height = getSize().height;
// Pixel per pecent
int pixels;
background = getBackground();
foreground = getForeground();
// Draw background
g.setColor ( background );
g.fillRect ( 0, 0, width, height);
// Draw top left border
g.setColor ( Color.gray );
g.drawLine ( 0, 0, width, 0); // top left to top right
g.drawLine ( 0, 0 , 0, height ); // top left to bottom left
g.setColor ( Color.black.brighter() );
g.drawLine ( 1, 1, width-1, 1 ); // near top left to near top right
g.drawLine ( 1, 1, 1, height-1 ); // near top left to near bottom left
// Draw bottom right border
g.setColor ( Color.lightGray.darker() );
g.drawLine ( 2, height-1, width-1, height-1); // bottom left to bottom right
g.drawLine ( width-1, height-1, width-1, 1 ); // bottom right to top right
g.setColor ( Color.lightGray );
g.drawLine ( 2, height-2, width-2, height-2); // near bottom left to near bottom right
g.drawLine ( width-2, height-2, width-2, 2 ); // near bottom right to near top right
// Calculate bar pixels
pixels = (int) ( width * m_percentage);
if (pixels > width-3)
pixels = width-3;
// Draw bar
g.setColor ( foreground );
g.fillRect ( 2, 2, pixels , height - 3);
// If display text is required
if (m_displayText)
{
g.setColor (m_textColor);
// Get color information
FontMetrics f = g.getFontMetrics();
String percentString =
String.valueOf((int)(m_percentage*100.0));
g.drawString ( percentString , (width - f.stringWidth (percentString) ) / 2,
(height ) / 2 + f.getHeight() /2 );
}
}
// Returns minimum bean size
public Dimension getMinimumSize()
{
return getSize();
}
// Returns preferred bean size
public Dimension getPreferredSize()
{
return getMinimumSize();
}
}
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