public bool Check()
{
if (KeyboardComponent.KeyReleased(_key))
{
_tempTime = TimeBetweenRepeat;
}
if (KeyboardComponent.KeyPressed(_key))
{
return(true);
}
if (KeyboardComponent.KeyHolded(_key, RequireElapsedTime) &&
KeyboardComponent.TotalTimeKeyPressed[_key] >= _tempTime)
{
// _tempTime == TimeBetweenRepeat its like
// KeyHoldedFirstTriggering possibly variable
// If we do not do it we notice undesirable triggering
// (RequireElapsedTime.Miliseconds / TimeBetweenRepeat.Miliseconds) times
if (_tempTime == TimeBetweenRepeat)
{
_tempTime += RequireElapsedTime;
}
_tempTime += TimeBetweenRepeat;
return(true);
}
return(false);
}
public static void Load(Game game)
{
if (Loaded)
{
throw new InvalidOperationException("Keyboard component already loaded");
}
Instance = new KeyboardComponent(game);
game.Components.Add(Instance);
Loaded = true;
game.Components.ComponentRemoved += CheckForForceRemove;
}
public override void Update(GameTime gameTime)
{
if (!Enabled)
{
return;
}
base.Update(gameTime);
if (_leftArrowTracer.Check() && CursorPosition > 0)
{
int oldCursorPosition = CursorPosition;
if (KeyboardComponent.IsKeyDown(Keys.LeftControl) || KeyboardComponent.IsKeyDown(Keys.RightControl))
{
CursorPosition = GetIndexOfPreviousSection(Text, _sectionSplitSymbols, CursorPosition);
}
else
{
CursorPosition--;
}
if (KeyboardComponent.IsKeyDown(Keys.LeftShift) || KeyboardComponent.IsKeyDown(Keys.RightShift))
{
if (IsTextHighlighted)
{
int highlightedCount = oldCursorPosition - CursorPosition;
for (int i = 0; i < highlightedCount; i++)
{
if (CursorPosition < HighlightRange.X)
{
HighlightRange -= new Point(1, 0);
}
else
{
HighlightRange -= new Point(0, 1);
}
}
}
else
{
HighlightRange = new Point(CursorPosition, oldCursorPosition);
}
}
else
{
ResetHighlighting();
}
}
if (_rightArrowTracer.Check() && CursorPosition < _buffer.Length)
{
int oldCursorPosition = CursorPosition;
if (KeyboardComponent.IsKeyDown(Keys.LeftControl) || KeyboardComponent.IsKeyDown(Keys.RightControl))
{
CursorPosition = GetIndexOfNextSection(Text, _sectionSplitSymbols, CursorPosition);
}
else
{
CursorPosition++;
}
if (KeyboardComponent.IsKeyDown(Keys.LeftShift) || KeyboardComponent.IsKeyDown(Keys.RightShift))
{
if (IsTextHighlighted)
{
int highlightedCount = CursorPosition - oldCursorPosition;
for (int i = 0; i < highlightedCount; i++)
{
if (HighlightRange.Y >= CursorPosition)
{
HighlightRange += new Point(1, 0);
}
else
{
HighlightRange += new Point(0, 1);
}
}
}
else
{
HighlightRange = new Point(oldCursorPosition, CursorPosition);
}
}
else
{
ResetHighlighting();
}
}
if (_deleteTracer.Check())
{
// I send unused range of Unicode symbols
// for reduce count of code (for example \u0010 is DLE symbol (Data link escape))
if (KeyboardComponent.IsKeyDown(Keys.LeftControl) || KeyboardComponent.IsKeyDown(Keys.RightControl))
{
WriteControlToBuffer('\u0010');
}
else
{
WriteControlToBuffer('\u0000');
}
}
}
