/// <summary>
/// Draws an 8x8 character cell on the bitmap.
/// </summary>
/// <remarks>
/// Might want a way to specify that the background shouldn't be drawn at all.
/// </remarks>
/// <param name="vb">Bitma to draw on.</param>
/// <param name="ch">Character to draw.</param>
/// <param name="xc">X coord of upper-left pixel.</param>
/// <param name="yc">Y coord of upper-left pixel.</param>
/// <param name="foreColor">Foreground color index.</param>
/// <param name="backColor">Background color index.</param>
public static void DrawChar(VisBitmap8 vb, char ch, int xc, int yc,
byte foreColor, byte backColor)
{
int origXc = xc;
int[] charBits = Font8x8.GetBitData(ch);
for (int row = 0; row < 8; row++)
{
int rowBits = charBits[row];
for (int col = 7; col >= 0; col--)
{
if ((rowBits & (1 << col)) != 0)
{
vb.SetPixelIndex(xc, yc, foreColor);
}
else
{
vb.SetPixelIndex(xc, yc, backColor);
}
xc++;
}
xc = origXc;
yc++;
}
}
/// <summary>
/// Gets a rendered dispay buffer of the specified string
/// </summary>
/// <param name="message">The message</param>
/// <returns>The buffer</returns>
public byte[][] Render(string message)
{
Font8x8.Character character = null;
message = (message ?? string.Empty);
var buffer = CreateBuffer(message.Length);
for (int charIndex = 0; charIndex < message.Length; charIndex++)
{
var characterToRender = message[charIndex];
character = Font8x8.GetCharacter(characterToRender);
if (character == null)
{
character = Font8x8.GetCharacter(' ');
}
if (character == null)
{
throw new NotSupportedException(string.Format("Character '{0}' is not supported", characterToRender));
}
for (var r = 0; r < this.Rows; r++)
{
buffer[r][charIndex] = character.Bitmap[r];
}
}
return(buffer);
}
