protected override void StartDragCore(Point position)
{
_fromPt = position;
_adorner = new SelectAdorner(Target)
{
Rectangle = new Rect(position, position)
};
AdornerLayer layer = AdornerLayer.GetAdornerLayer(Target);
layer.Add(_adorner);
}
private void CanvasMouseDown(object sender, MouseButtonEventArgs e)
{
if (inkCanvas.EditingMode == InkCanvasEditingMode.Select && inkCanvas.GetSelectedStrokes().Count > 0)
{
Rect rect = inkCanvas.GetSelectionBounds(); //bound of strokes
rect.Inflate(14, 14); //bound of resize thumb
if (!rect.Contains(e.GetPosition(inkCanvas)))
{
inkCanvas.EditingMode = InkCanvasEditingMode.None;
}
else
{
return;
}
}
if (curColorPickerMode == ColorPickerModeEnum.True)
{
curColorPickerMode = ColorPickerModeEnum.False;
Mouse.OverrideCursor = Cursors.Arrow;
POINT p;
GetCursorPos(out p);
IntPtr hdc = GetDC(IntPtr.Zero);
int c = GetPixel(hdc, p.X, p.Y);
byte r = (byte)(c & 0xFF);
byte g = (byte)((c & 0xFF00) >> 8);
byte b = (byte)((c & 0xFF0000) >> 16);
// set color
}
switch (curOperationMode)
{
case ModeEnum.Draw:
if (curDraw != null)
{
curDraw.OnMouseDown(inkCanvas, e);
}
break;
case ModeEnum.Select:
var selectionStartPoint = new Point?(e.GetPosition(inkCanvas));
AdornerLayer adornerLayer = AdornerLayer.GetAdornerLayer(inkCanvas);
if (adornerLayer != null)
{
SelectAdorner adorner = new SelectAdorner(inkCanvas, selectionStartPoint);
if (adorner != null)
{
adornerLayer.Add(adorner);
}
}
break;
}
}
private void DrawSelect_MouseUp()
{
if (SelectRectangle != null && currentSelectedImage == null)
{
if (SelectRectangle.Height < 2 || SelectRectangle.Width < 2)
{
paintCanvas.Children.Remove(SelectRectangle);
SelectRectangle = null;
}
else
{
paintCanvas.Children.Remove(SelectRectangle);
currentSelectedImage = CanvasUltilities.Crop(paintCanvas, Canvas.GetLeft(SelectRectangle), Canvas.GetTop(SelectRectangle), SelectRectangle.Width, SelectRectangle.Height);
//Add replace rectangle to Hide view behind cropped region
Rectangle replace = new Rectangle()
{
Width = SelectRectangle.Width,
Height = SelectRectangle.Height,
Stroke = Brushes.Transparent,
StrokeThickness = 0,
Fill = Brushes.White
};
Canvas.SetLeft(replace, Canvas.GetLeft(SelectRectangle));
Canvas.SetTop(replace, Canvas.GetTop(SelectRectangle));
paintCanvas.Children.Add(replace);
currentSelectedImage.Stretch = Stretch.Fill;
currentSelectedImage.StretchDirection = StretchDirection.Both;
Canvas.SetLeft(currentSelectedImage, Canvas.GetLeft(SelectRectangle));
Canvas.SetTop(currentSelectedImage, Canvas.GetTop(SelectRectangle));
currentSelectedImage.Width = currentSelectedImage.Source.Width;
currentSelectedImage.Height = currentSelectedImage.Source.Height;
paintCanvas.Children.Add(currentSelectedImage);
Adorner image_adorner = new SelectAdorner(currentSelectedImage);
adlayer.Add(image_adorner);
}
}
}
