/// <summary>
/// Goto the next character in the string. Usually not so tricky except when we run
/// out of gas. Then we act accoring to the mode of the control
/// <list type="bullet">
/// <item>Continous - we start the string over again</item>
/// <item>SingleShot - scroll it once then stop. We raise an event
/// to tell the user that we are complete</item>
/// </list>
/// </summary>
private void RackCharacter()
{
this.offset += 1;
if (this.offset >= this.ledStates.Length)
{
this.offset = 0;
this.textOffset += 1;
if (this.textOffset < this.Text.Length)
{
this.ledStates = MatrixLedCharacterDefinitions.GetDefinition(String.Empty + this.Text[this.textOffset]);
}
else
{
if (this.Mode == MarqueeMode.Continuous)
{
this.textOffset = 0;
this.ledStates = MatrixLedCharacterDefinitions.GetDefinition(String.Empty + this.Text[this.textOffset]);
}
else if (this.Mode == MarqueeMode.SingleShot)
{
this.textExists = false;
this.OnMarqueeFinished();
}
}
}
}
/// <summary>
/// Initialize a text string that is to be animated
/// </summary>
private void InitializeAnimatedText()
{
this.offset = 0;
this.textOffset = 0;
if (!String.IsNullOrEmpty(this.Text))
{
this.ledStates = MatrixLedCharacterDefinitions.GetDefinition(String.Empty + this.Text[this.textOffset]);
this.textExists = true;
}
else
{
this.textExists = false;
}
}
/// <summary>
/// Initialize all columns from a definition in the Character defintion
/// </summary>
private void UpdateLedsFromCharacter()
{
byte[] bytes = MatrixLedCharacterDefinitions.GetDefinition(this.Text);
this.columns.Clear();
for (int i = 0; i < bytes.Length - 1; i++)
{
List <bool> n = new List <bool>
{
(bytes[i] & 0x40) != 0,
(bytes[i] & 0x20) != 0,
(bytes[i] & 0x10) != 0,
(bytes[i] & 0x08) != 0,
(bytes[i] & 0x04) != 0,
(bytes[i] & 0x02) != 0,
(bytes[i] & 0x01) != 0,
};
this.columns.Add(n);
}
this.UpdateLedsFromState();
}