// Interface handling
private void button_SmoothOnOff_Click(object sender, EventArgs e)
{
if (smoothingOn)
{
// Off
button_smoothOnOff.BackColor = Color.Gainsboro;
MouseHook.moveEnabled = true;
MouseHook.downEnabled = true;
smoothingOn = false;
isDrawing = false;
lineSmoothingTimer.Stop();
lineProcessingTimer.Stop();
try
{
settings.checkBox_disableAutoDetection.Enabled = true;
}
catch
{
// Fail gracefully
}
if (config.disableAutoDetection)
{
checkBox_tabletMode.Enabled = true;
}
}
else
{
// On
button_smoothOnOff.BackColor = Color.Azure;
linePoints.Clear();
smoothPoints.Clear();
position = MouseHook.GetCursorPosition();
smoothPoints.Add(position);
if (config.smoothOnDraw)
{
MouseHook.moveEnabled = true;
isDrawing = false;
}
else
{
MouseHook.moveEnabled = false;
isDrawing = true;
lineProcessingTimer.Start();
lineSmoothingTimer.Start();
}
smoothingOn = true;
try
{
settings.checkBox_disableAutoDetection.Enabled = false;
}
catch
{
// Fail gracefully
}
if (config.disableAutoDetection)
{
checkBox_tabletMode.Enabled = false;
}
}
}
// Line processing (interlopation)
private void LineProcessingUpdate(object sender, ElapsedEventArgs e)
{
try
{
// B-Spline smoothing
if (linePoints.Count > 3)
{
int i;
int splineX;
int splineY;
double[] a = new double[5];
double[] b = new double[5];
Point p1 = linePoints[0];
Point p2 = linePoints[1];
Point p3 = linePoints[2];
Point p4 = linePoints[3];
a[0] = (-p1.X + 3 * p2.X - 3 * p3.X + p4.X) / 6.0;
a[1] = (3 * p1.X - 6 * p2.X + 3 * p3.X) / 6.0;
a[2] = (-3 * p1.X + 3 * p3.X) / 6.0;
a[3] = (p1.X + 4 * p2.X + p3.X) / 6.0;
b[0] = (-p1.Y + 3 * p2.Y - 3 * p3.Y + p4.Y) / 6.0;
b[1] = (3 * p1.Y - 6 * p2.Y + 3 * p3.Y) / 6.0;
b[2] = (-3 * p1.Y + 3 * p3.Y) / 6.0;
b[3] = (p1.Y + 4 * p2.Y + p3.Y) / 6.0;
smoothPoints.Add(new Point((int)a[3], (int)b[3]));
for (i = 1; i <= config.smoothingInterpolation - 1; i++)
{
float t = Convert.ToSingle(i) / Convert.ToSingle(config.smoothingInterpolation);
splineX = (int)((a[2] + t * (a[1] + t * a[0])) * t + a[3]);
splineY = (int)((b[2] + t * (b[1] + t * b[0])) * t + b[3]);
if (smoothPoints.Last <Point>() != new Point(splineX, splineY))
{
smoothPoints.Add(new Point(splineX, splineY));
}
}
linePoints.RemoveAt(0);
}
else if (MouseHook.GetCursorPosition() != position && isDrawing)
{
if (config.disableCatchUp)
{
if (mouseMoving)
{
linePoints.Add(position);
}
}
else
{
linePoints.Add(position);
}
}
}
catch
{
// Fail processing gracefully
}
}
private void MouseMoveHandler(object sender, EventArgs e)
{
if (!smoothingOn)
{
overlay.cursorPos = MouseHook.GetCursorPosition();
overlay.Invalidate();
}
if (config.smoothOnDraw && !isDrawing && MouseHook.moveEnabled)
{
overlay.cursorPos = MouseHook.GetCursorPosition();
overlay.Invalidate();
}
}
// Mouse event handling
private void MouseDownHandler(object sender, EventArgs e)
{
if (smoothingOn)
{
if (config.smoothOnDraw && !isDrawing)
{
linePoints.Clear();
smoothPoints.Clear();
MouseHook.moveEnabled = false;
Point p = MouseHook.GetCursorPosition();
smoothPoints.Add(p);
linePoints.Add(p);
linePoints.Add(p);
linePoints.Add(p);
position = p;
isDrawing = true;
lineProcessingTimer.Start();
lineSmoothingTimer.Start();
}
}
}
private void MouseUpHandler(object sender, EventArgs e)
{
if (smoothingOn)
{
if (config.smoothOnDraw && isDrawing)
{
MouseHook.downEnabled = false;
isDrawing = false;
lineProcessingTimer.Stop();
linePoints.Clear();
if (!config.snapToCursor)
{
Point guidePos = overlay.cursorPos;
MouseHook.SetCursorPos(guidePos.X, guidePos.Y);
}
else
{
overlay.cursorPos = MouseHook.GetCursorPosition();
}
}
}
}