public static unsafe void KeyDown(uint scancode)
{
if (!initialized)
{
return;
}
// actually not correct because capslock does not behave like shift on all characters...
bool shifted = (Keyboard.LeftShift() || Keyboard.RightShift());
TextMode.SetAttributes(TextColor.Yellow, TextColor.Black);
ADC.Keys key = (ADC.Keys)scancode;
// switch statement doesn't for all cases somehow..
//switch (key)
//{
//case Keys.Insert:
if (key == Keys.Insert)
{
overwrite = !overwrite;
SetOverwrite(overwrite);
return;
}
//case Keys.Delete:
else if (key == Keys.Delete)
{
return;
}
//case Keys.PageUp:
else if (key == Keys.PageUp)
{
TextMode.ScrollPage(-1);
return;
}
//case Keys.PageDown:
else if (key == Keys.PageDown)
{
TextMode.ScrollPage(+1);
return;
}
//case Keys.Backspace:
else if (key == Keys.Backspace)
{
if (Console.textBuffer != null &&
textBuffer->Length <= 0)
{
//Beep??
return;
}
int x, y, width, height;
TextMode.GetScreenSize(out width, out height);
TextMode.GetCursor(out x, out y);
x--;
if (x < 0)
{
x = width - 1;
y--;
if (y < 0)
{
y = 0;
return;
}
}
TextMode.MoveTo(x, y);
TextMode.WriteChar((byte)' ');
textBuffer->RemoveAt(textBuffer->Length - 1, 1);
TextMode.MoveTo(x, y);
TextMode.RefreshCursor();
return;
}
//case Keys.LeftArrow:
else if (key == Keys.LeftArrow)
{
#if !FORBID_ARROW_KEYS
int x, y, width, height;
TextMode.GetScreenSize(out width, out height);
TextMode.GetCursor(out x, out y);
x = x - 1; if (x < 0)
{
x = 0;
}
TextMode.MoveTo(x, y);
TextMode.RefreshCursor();
#else
//TODO: Beep?
#endif
return;
}
//case Keys.RightArrow:
else if (key == Keys.RightArrow)
{
#if !FORBID_ARROW_KEYS
int x, y, width, height;
TextMode.GetScreenSize(out width, out height);
TextMode.GetCursor(out x, out y);
x = x + 1; if (x >= width)
{
x = width - 1;
}
TextMode.MoveTo(x, y);
TextMode.RefreshCursor();
#else
//TODO: Beep?
#endif
return;
}
//case Keys.UpArrow:
else if (key == Keys.UpArrow)
{
#if !FORBID_ARROW_KEYS
int x, y, width, height;
TextMode.GetScreenSize(out width, out height);
TextMode.GetCursor(out x, out y);
y = y - 1; if (y < 0)
{
y = 0;
}
TextMode.MoveTo(x, y);
TextMode.RefreshCursor();
#else
//TODO: Beep?
#endif
return;
}
//case Keys.DownArrow:
else if (key == Keys.DownArrow)
{
#if !FORBID_ARROW_KEYS
int x, y, width, height;
TextMode.GetScreenSize(out width, out height);
TextMode.GetCursor(out x, out y);
y = y + 1; if (y >= height)
{
y = height - 1;
}
TextMode.MoveTo(x, y);
TextMode.RefreshCursor();
#else
//TODO: Beep?
#endif
return;
}
//case Keys.Enter:
else if (key == Keys.Enter)
{
TextMode.WriteLine();
TextMode.ClearToEndOfLine();
TextMode.RefreshCursor();
DispatchBuffer();
return;
}
//}
// Code to fix keymap issue with caps.
bool upperCase = shifted;
if (
(scancode >= 0x10 && scancode <= 0x26) ||
(scancode == 0x1e || scancode == 0x1f) ||
(scancode >= 0x2c && scancode <= 0x2f) ||
(scancode >= 0x30 && scancode <= 0x32))
{
upperCase ^= Keyboard.CapsLock();
}
byte character = Keyboard.Translate(scancode, upperCase);
if (character == 0)
{
// just so that you can actually see that keyboard input works (& we simply don't know what character you just pressed)...
TextMode.WriteChar((byte)'?');
TextMode.Write((int)scancode);
TextMode.RefreshCursor();
textBuffer->AppendChar((byte)255);
return;
}
int read = TextMode.GetReadPosition();
int write = TextMode.GetWritePosition();
if (read != write)
{
TextMode.SetReadPos(write);
}
TextMode.WriteChar(character);
textBuffer->AppendChar(character);
TextMode.RefreshCursor();
}