private void ClearSurfaces()
{
_lastStroke = null;
if (_bitmap != null)
{
using (_bitmap)
{
var g = _bitmap.BeginDraw();
_graphicsPath.Widen(_dirtyMarkerPen);
g.SetClip(_graphicsPath);
g.Clear(Color.Transparent);
_bitmap.EndDraw();
var pathDirty = Rectangle.Ceiling(_graphicsPath.GetBounds());
pathDirty.Offset(Bounds.Location);
pathDirty.Intersect(Bounds);
pathDirty.Offset(-Bounds.X, -Bounds.Y); //挪回来变为基于窗口的坐标
SetDiBitmap(_bitmap, pathDirty);
_graphicsPath.Reset();
_dirtyGraphicsPath.Reset();
}
_bitmap = null;
}
}
protected void PointCapture_PointCaptured(object sender, PointsCapturedEventArgs e)
{
var pointCapture = (IPointCapture)sender;
if (pointCapture.Mode != CaptureMode.UserDisabled &&
pointCapture.State == CaptureState.Capturing &&
AppConfig.VisualFeedbackWidth > 0 &&
!(e.Points.Count == 1 && e.Points.First().Count == 1))
{
if (_bitmap == null || _lastStroke == null)
{
ClearSurfaces();
_bitmap = new DiBitmap(this.Size);
}
DrawSegments(e.Points);
}
}
public void DrawPoints(List <List <Point> > points)
{
if (_penWidth > 0 && !(points.Count == 1 && points[0].Count == 1))
{
if (_bitmap == null || _lastStroke == null)
{
ClearSurfaces();
try
{
_bitmap = new DiBitmap(this.Size);
}
catch (ApplicationException ex)
{
Logging.LogException(ex);
}
}
DrawSegments(points);
}
}
private void SetDiBitmap(DiBitmap bmp, Rectangle dirtyRect, byte opacity = 255)
{
SetHBitmap(bmp.HBitmap, Bounds, Point.Empty, dirtyRect, opacity);
}
private void SetDiBitmap(DiBitmap bmp, Rectangle dirtyRect, byte opacity = 255)
{
SetHBitmap(bmp.HBitmap, Bounds, Point.Empty, dirtyRect, opacity);
}
private void ClearSurfaces()
{
_lastStroke = null;
if (_bitmap != null)
{
using (_bitmap)
{
var g = _bitmap.BeginDraw();
_graphicsPath.Widen(_dirtyMarkerPen);
g.SetClip(_graphicsPath);
g.Clear(Color.Transparent);
_bitmap.EndDraw();
var pathDirty = Rectangle.Ceiling(_graphicsPath.GetBounds());
pathDirty.Offset(Bounds.Location);
pathDirty.Intersect(Bounds);
pathDirty.Offset(-Bounds.X, -Bounds.Y); //挪回来变为基于窗口的坐标
SetDiBitmap(_bitmap, pathDirty);
_graphicsPath.Reset();
_dirtyGraphicsPath.Reset();
}
_bitmap = null;
}
}
protected void MouseCapture_PointCaptured(object sender, PointsCapturedEventArgs e)
{
var touchCapture = (ITouchCapture)sender;
if (touchCapture.Mode != CaptureMode.UserDisabled &&
touchCapture.State == CaptureState.Capturing &&
AppConfig.VisualFeedbackWidth > 0 &&
!(e.Points.Count == 1 && e.Points.First().Count == 1))
{
if (_bitmap == null || _lastStroke == null)
{
ClearSurfaces();
_bitmap = new DiBitmap(Screen.PrimaryScreen.Bounds.Size);
}
DrawSegments(e.Points);
}
}
