private void DrawingCanvas_ManipulationDelta(object sender, ManipulationDeltaEventArgs e)
{
TouchableImage image = e.OriginalSource as TouchableImage;
if (image != null)
{
Rect containingRect = new Rect(((FrameworkElement)e.ManipulationContainer).RenderSize);
Rect shapeBounds = image.transformGroup.TransformBounds(new Rect(image.RenderSize));
if (e.IsInertial && !containingRect.Contains(shapeBounds))
{
e.Complete();
}
Point center = new Point(image.RenderSize.Width / 2.0, image.RenderSize.Height / 2.0);
//rotation
image.rotate.CenterX = center.X;
image.rotate.CenterY = center.Y;
image.rotate.Angle += e.DeltaManipulation.Rotation;
//scale
image.scale.CenterX = center.X;
image.scale.CenterY = center.Y;
image.scale.ScaleX *= e.DeltaManipulation.Scale.X;
image.scale.ScaleY *= e.DeltaManipulation.Scale.Y;
//trans
image.traslation.X += e.DeltaManipulation.Translation.X;
image.traslation.Y += e.DeltaManipulation.Translation.Y;
}
}
private bool BeginCrop(PathGeometry path)
{
TouchableImage image = this._selectedImage;
if (image != null)
{
//이 이미지 위치정보 A+ 저장
double outerImage_x = InkCanvas.GetLeft(image);
double outerImage_y = InkCanvas.GetTop(image);
double outerImage_width = image.Width;
double outerImage_height = image.Height;
Rect outerImageRect = new Rect(0, 0, outerImage_width, outerImage_height);
//입력받은 패스를 가지고 이미지의 좌표에 맞게 좌표수정
path.Transform = new TranslateTransform(-outerImage_x, -outerImage_y);
//화면 영역에 맞게 combine 된 clipping path를 구함
RectangleGeometry imageRectGeo = new RectangleGeometry(outerImageRect);
CombinedGeometry combinedGeoIntersect = new CombinedGeometry(GeometryCombineMode.Intersect, imageRectGeo, path);
//이미지에 적용, 패스로 크로핑
image.Clip = combinedGeoIntersect;
//새 이미지를 만든다.
TouchableImage cloneImg = new TouchableImage();
//cloneImg.RenderTransform = image.RenderTransform.Clone();
cloneImg.Source = image.Source.Clone();
cloneImg.Width = image.ActualWidth;
cloneImg.Height = image.ActualHeight;
//이미지의 영역과 클리핑 데이터로 새로운 클리핑 영역을 만듦
CombinedGeometry combinedGeoXor = new CombinedGeometry(GeometryCombineMode.Xor, imageRectGeo, path);
cloneImg.Clip = combinedGeoXor;
//새로 만들어진 이미지를 넣고 배치한다.
this._inkCanvas.Children.Add(cloneImg);
//cloneImg.RenderTransform = new RotateTransform();
InkCanvas.SetLeft(cloneImg, outerImage_x);
InkCanvas.SetTop(cloneImg, outerImage_y);
//원본 이미지에 재적용
//클리핑된 이미지 B 완성 (선택한 영역만 남은 그림)
//이 이미지 위치정보 B+ 저장
//원본 이미지의 인덱스 위치에
//이미지 A 를 A+ 위치에 배치
//이미지 B 를 B+ 위치에 배치
//원본 이미지 캔버스에서 제거
if (this.ImageCropped != null)
{
ImageCropped(this, null);
}
}
return(true);
}
public void SetCropTarget(System.Windows.Input.TouchEventArgs e)
{
this._selectedImage = null;
Visual visual = this._inkCanvas as Visual;
if (visual != null)
{
//선택한 위치가 이미지랑 겹치는지 확인
//겹치면 가장 위 이미지에 대해서 정보를 클래스에 저장
VisualTreeHelper.HitTest(this._inkCanvas.Parent as Visual,
new HitTestFilterCallback(p =>
{
if (p is TouchableImage)
{
this._selectedImage = p as TouchableImage;
return(HitTestFilterBehavior.Stop);
}
this._selectedImage = null;
return(HitTestFilterBehavior.Continue);
}),
new HitTestResultCallback(q =>
{
return(HitTestResultBehavior.Continue);
}),
new PointHitTestParameters(e.GetTouchPoint(null).Position));
}
}
private HitTestResultBehavior ResultCallBack(HitTestResult e)
{
TouchableImage touchObj = e.VisualHit as TouchableImage;
if (touchObj != null)
{
return(HitTestResultBehavior.Stop);
}
return(HitTestResultBehavior.Continue);
}
void AddTouchableImage(Point pt, BitmapImage image)
{
TouchableImage ti = new TouchableImage();
ti.Source = image;
ti.Width = image.PixelWidth > 500 ? (double)(image.PixelWidth >> 1) : image.PixelWidth;
ti.Height = image.PixelHeight > 500 ? (double)(image.PixelHeight >> 1) : image.PixelHeight;
this.DrawingCanvas.Children.Add(ti);
this.RefreshCurrentPreview();
InkCanvas.SetLeft(ti, pt.X - ((int)ti.Width >> 2));
InkCanvas.SetTop(ti, pt.Y - ((int)ti.Height >> 2));
ti.IsManipulationEnabled = true;
}
