protected override HitTestResult HitTestCore(PointHitTestParameters hitTestParams)
{
Point hitPoint = hitTestParams.HitPoint;
if (Tolerances.AreClose(hitPoint, this.lastPoint))
{
return(base.HitTestCore(hitTestParams));
}
this.lastPoint = hitPoint;
double num;
if (((LayoutBehavior)this.AdornerSet.Behavior).IsNewGridlineEnabled && Mouse.LeftButton != MouseButtonState.Pressed && Mouse.RightButton != MouseButtonState.Pressed)
{
Matrix inverseMatrix = ElementUtilities.GetInverseMatrix(this.AdornerSet.Matrix);
Point point = hitPoint * inverseMatrix;
Point pointBegin;
Point pointEnd;
this.GetPoints(out pointBegin, out pointEnd, this.AdornerSet.Matrix);
num = !new Rect(pointBegin, pointEnd).Contains(point) ? double.NaN : (!this.IsX ? point.Y : point.X);
}
else
{
num = double.NaN;
}
if (!this.position.Equals(num))
{
this.position = num;
if (this.isMouseOver)
{
this.InvalidateRender();
this.AdornerSet.Update();
}
}
return(base.HitTestCore(hitTestParams));
}
protected override HitTestResult HitTestCore(PointHitTestParameters hitTestParameters)
{
var source = new FormatConvertedBitmap((BitmapSource)Source, PixelFormats.Bgra32, null, 0);
// Get the pixel of the source that was hit
var x = (int)(hitTestParameters.HitPoint.X / ActualWidth * source.PixelWidth);
var y = (int)(hitTestParameters.HitPoint.Y / ActualHeight * source.PixelHeight);
if (x == source.PixelWidth)
{
x--;
}
if (y == source.PixelHeight)
{
y--;
}
var pixelxy = new Int32Rect(x, y, 1, 1);
var pixelbgra = new byte[4];
source.CopyPixels(pixelxy, pixelbgra, source.PixelWidth * 4, 0);
if (pixelbgra[3] < 5)
{
return(null);
}
return(new PointHitTestResult(this, hitTestParameters.HitPoint));
}
void HandleMouseMove(object sender, MouseEventArgs e)
{
var currentPosition = e.GetPosition(CaptureBorder);
var hitParams = new PointHitTestParameters(currentPosition);
VisualTreeHelper.HitTest(viewport, null, ResultCallback, hitParams);
}
private ModelVisual3D GetHitObject(Point mousePosition)
{
ModelVisual3D hitModelVisual3D = null;
// We will use VisualTreeHelper.HitTest with a BeginHitTestResultHandler
// because we need to filter out the helper 3D objects (3D lines, wire grid, etc) - so objects that are not children of ObjectsVisual.
// If we would not need that filter, we could simply use:
//var hitTestResult = VisualTreeHelper.HitTest(MainViewport, mousePosition) as RayMeshGeometry3DHitTestResult;
_lastHitTestResult = null; // This field will be set in the BeginHitTestResultHandler
var pointParams = new PointHitTestParameters(mousePosition);
VisualTreeHelper.HitTest(MainViewport, null, BeginHitTestResultHandler, pointParams);
if (_lastHitTestResult != null)
{
hitModelVisual3D = _lastHitTestResult.VisualHit as ModelVisual3D;
// proceed only if we hit an object from ObjectsVisual (and not wire grid or some other helper object)
if (!ObjectsVisual.Children.Contains(hitModelVisual3D))
{
hitModelVisual3D = null;
}
}
return(hitModelVisual3D);
}
protected override HitTestResult HitTestCore(PointHitTestParameters hitTestParameters)
{
var source = (BitmapSource)Source;
// Get the pixel of the source that was hit
var x = (int)(hitTestParameters.HitPoint.X * (source.PixelWidth - 1) / ActualWidth);
var y = (int)(hitTestParameters.HitPoint.Y * (source.PixelHeight - 1) / ActualHeight);
// Copy the single pixel into a new byte array representing RGBA
var pixel = new byte[4];
source.CopyPixels(new Int32Rect(x, y, 1, 1), pixel, 4, 0);
if (false)
{
Debug.WriteLine("x={0}, y={1}, pixel={{{2},{3},{4},{5}}}, Format={6}", x, y, pixel[0], pixel[1], pixel[2], pixel[3], source.Format);
}
if (source.Format == PixelFormats.Bgra32 && pixel[3] == 0)
{
return(null);
}
else if (source.Format == PixelFormats.Indexed8 && pixel[0] == 0)
{
return(null);
}
return(new PointHitTestResult(this, hitTestParameters.HitPoint));
}
internal List <DrawingVisual> GetVisuals(Point point)
{
hits.Clear();
//Rect rect = new Rect(new Point(point.X - 2, point.Y - 2), new Point(point.X + 2, point.Y + 2));
//RectangleGeometry rectGeo = new RectangleGeometry(rect);
//GeometryHitTestParameters parameters = new GeometryHitTestParameters(rectGeo);
PointHitTestParameters parameters = new PointHitTestParameters(point);
HitTestResultCallback callback = new HitTestResultCallback(this.HitTestCallback);
VisualTreeHelper.HitTest(this, null, callback, parameters);
try
{
if (hits.Count == 0)
{
return(null);
}
else
{
return(hits);
}
}
catch
{
return(null);
}
}
private void viewport_MouseDown(object sender, MouseButtonEventArgs e)
{
var mousePos = e.GetPosition(viewport);
PointHitTestParameters pointparams = new PointHitTestParameters(mousePos);
VisualTreeHelper.HitTest(viewport, null, HTResult, pointparams);
}
private void Grid_MouseMove(object sender, MouseEventArgs e)
{
Point mouseposition = e.GetPosition(myViewport);
PointHitTestParameters pointparams = new PointHitTestParameters(mouseposition);
VisualTreeHelper.HitTest(myViewport, null, HTResult, pointparams);
}
internal UIElement GetHitElement(double x, double y)
{
UIElement element;
var gazePointD = new Point(x, y);
var window = Application.Current.MainWindow;
if (window != null)
{
var pointFromScreen = window.PointFromScreen(new Point(x, y));
var hitTestParameters = new PointHitTestParameters(pointFromScreen);
element = null;
var pointHit = new Point();
VisualTreeHelper.HitTest(window, null, OnResultCallback, hitTestParameters);
HitTestResultBehavior OnResultCallback(HitTestResult result)
{
HitTestResultBehavior value;
if (result is PointHitTestResult hitTestResult &&
hitTestResult.VisualHit is UIElement elementHit &&
elementHit.IsHitTestVisible)
{
element = elementHit;
pointHit = hitTestResult.PointHit;
value = HitTestResultBehavior.Stop;
}
else
{
value = HitTestResultBehavior.Continue;
}
return(value);
}
//Image.HitTestCoreメソッドの上書き
protected override HitTestResult HitTestCore(PointHitTestParameters hitTestParameters)
{
var source = (BitmapSource)Source;
//get the pixel of the source that was hit
var x = (int)(hitTestParameters.HitPoint.X / ActualWidth * source.PixelWidth);
var y = (int)(hitTestParameters.HitPoint.Y / ActualHeight * source.PixelHeight);
//copy the single pixel in to a new byte array representing RGBA
var pixel = new byte[4];
source.CopyPixels(new Int32Rect(x, y, 1, 1), pixel, 4, 0);
//check the alpha (transparency) of the pixel
//- threshold can be adjusted from 0 to 255
if (pixel[0] == 0)
{
//MessageBox.Show(pixel[0].ToString());//test
return(null);
}
//不透明な場合のみマウスが上にありますよと返す
return(new PointHitTestResult(this, hitTestParameters.HitPoint));
}
protected override HitTestResult HitTestCore(PointHitTestParameters hitTestParameters)
{
BitmapSource source = (BitmapSource)Source;
//画像中の位置を取得
int x = (int)(hitTestParameters.HitPoint.X / ActualWidth * source.PixelWidth);
int y = (int)(hitTestParameters.HitPoint.Y / ActualHeight * source.PixelHeight);
//画像の外なら明らかにヒットしないのでnull返す…拡大時にPixelWidthかPixelHeightに一致してしまうのか？(未確認，負になるかも不明)
if (x < 0 || source.PixelWidth <= x || y < 0 || source.PixelHeight <= y)
{
return(null);
}
//byte配列にそのピクセルをコピー
byte[] pixel = new byte[4];
source.CopyPixels(new System.Windows.Int32Rect(x, y, 1, 1), pixel, 4, 0);
//透過しているかをチェック(閾値は変えれる)
if (pixel[3] < 1)
{
return(null);
}
return(new PointHitTestResult(this, hitTestParameters.HitPoint));
}
internal Adorner3D GetHitAdorner3D(AdornerSet3DContainer layer, Point point)
{
this.hitTestParameters3D = new PointHitTestParameters(point);
this.hitObject = (RectangleHitTestResult)null;
VisualTreeHelper.HitTest((Visual)layer, new HitTestFilterCallback(this.FilterPotentialHit), new HitTestResultCallback(this.ProcessHitTestResult3D), (HitTestParameters)this.hitTestParameters3D);
if (this.hitObject != null)
{
ModelVisual3D modelVisual3D1 = (ModelVisual3D)null;
foreach (DependencyObject dependencyObject in this.hitObject.HitPath)
{
ModelVisual3D modelVisual3D2 = dependencyObject as ModelVisual3D;
if (modelVisual3D2 != null)
{
modelVisual3D1 = modelVisual3D2;
break;
}
}
Adorner3D associatedAdorner = layer.GetAssociatedAdorner(modelVisual3D1);
if (associatedAdorner != null)
{
return(associatedAdorner);
}
}
return((Adorner3D)null);
}
private void ViewPort3D_OnMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
Point mousePos = e.GetPosition(viewPort3d);
PointHitTestParameters hitParams = new PointHitTestParameters(mousePos);
VisualTreeHelper.HitTest(viewPort3d, null, ResultCallback, hitParams);
}
private void Grid_MouseDown(object sender, MouseButtonEventArgs e)
{
if (this.CanMoveCamera)
{
if (e.MiddleButton == MouseButtonState.Pressed)
{
mouseDownLM = 2;
mouseDown = true;
centerOfViewport = viewport.PointToScreen(new Point(viewport.ActualWidth / 2, viewport.ActualHeight / 2));
MouseUtilities.SetPosition(centerOfViewport);
this.Cursor = Cursors.None;
}
else if (e.LeftButton == MouseButtonState.Pressed)
{
mouseDownLM = 1;
mouseDown = true;
diffOffset.X = translacija0.OffsetX;
diffOffset.Y = translacija0.OffsetY;
start = e.GetPosition(this);
// oblacic
Point pozicijaMisa = e.GetPosition(viewport);
Point3D point3D = new Point3D(pozicijaMisa.X, pozicijaMisa.Y, 0);
Vector3D pravac = new Vector3D(pozicijaMisa.X, pozicijaMisa.Y, 10);
PointHitTestParameters pointParameters = new PointHitTestParameters(pozicijaMisa);
RayHitTestParameters rayParameters = new RayHitTestParameters(point3D, pravac);
VisualTreeHelper.HitTest(viewport, null, HTResult, pointParameters);
}
}
}
private Adorner GetHitAdorner(Visual visual, Point point, Type[] adornerFilterTypes)
{
PointHitTestResult hitTestResult = (PointHitTestResult)null;
HitTestFilterCallback filterCallback = (HitTestFilterCallback)(testObject =>
{
foreach (Type type in adornerFilterTypes)
{
if (type.IsInstanceOfType((object)testObject))
{
return(HitTestFilterBehavior.Continue);
}
}
return(HitTestFilterBehavior.ContinueSkipSelf);
});
HitTestResultCallback resultCallback = (HitTestResultCallback)(hitItemsResult =>
{
hitTestResult = (PointHitTestResult)hitItemsResult;
return(HitTestResultBehavior.Stop);
});
PointHitTestParameters hitTestParameters = new PointHitTestParameters(point);
VisualTreeHelper.HitTest(visual, filterCallback, resultCallback, (HitTestParameters)hitTestParameters);
Adorner adorner = (Adorner)null;
if (hitTestResult != null)
{
adorner = hitTestResult.VisualHit as Adorner;
}
return(adorner);
}
private void mainViewport_MouseDown(object sender, MouseButtonEventArgs e)
{
Point mousePos = e.GetPosition(mainViewport);
PointHitTestParameters hitParams = new PointHitTestParameters(mousePos);
VisualTreeHelper.HitTest(mainViewport, null, HTResultCallback, hitParams);
}
private void rotacijaWheel(object sender, MouseButtonEventArgs e)
{
if (e.MiddleButton == MouseButtonState.Pressed)
{
vjuport.CaptureMouse();
start = e.GetPosition(this);
diffOffset.X = translacija.OffsetX;
diffOffset.Y = translacija.OffsetY;
ugaoPoX = mapaPoX.Angle;
ugaoPoZ = mapaPoZ.Angle;
}
else
{
System.Windows.Point mouseposition = e.GetPosition(vjuport);
Point3D testpoint3D = new Point3D(mouseposition.X, mouseposition.Y, 0); //dodali z kao trecu koordinatu da bi bilo 3d
Vector3D testdirection = new Vector3D(mouseposition.X, mouseposition.Y, 10);
PointHitTestParameters pointparams =
new PointHitTestParameters(mouseposition);
RayHitTestParameters rayparams =
new RayHitTestParameters(testpoint3D, testdirection);
//test for a result in the Viewport3D
hitgeo = null; //tu se smesta kvadar koji som pogodili
VisualTreeHelper.HitTest(vjuport, null, HTResult, pointparams);
}
}
protected override HitTestResult HitTestCore(PointHitTestParameters hitTestParameters)
{
// Hit if within bounding box
var pt = hitTestParameters.HitPoint;
return(new PointHitTestResult(this, pt));
}
private void HitTesting(Point p)
{
var element = (srcPin.Parent as ControlAdorner).AdornedElement;
VisualTreeHelper.HitTest(designCanvas, null, new HitTestResultCallback(HitTestResultCB1), new PointHitTestParameters(p));
DependencyObject selectedObj = result == null ? null : result.VisualHit;
while (selectedObj != null && selectedObj != designCanvas)
{
if (selectedObj is LinkableControl && selectedObj != element)
{
HitLinkableControl = selectedObj as LinkableControl;
AdornerLayer layer = AdornerLayer.GetAdornerLayer(HitLinkableControl);
PointHitTestParameters param = new PointHitTestParameters(designCanvas.TranslatePoint(p, layer));
VisualTreeHelper.HitTest(layer, null, new HitTestResultCallback(HitTestResultCB1), param);
selectedObj = result == null ? null : result.VisualHit;
while (selectedObj != null && selectedObj != designCanvas)
{
if (selectedObj is LinkPin)
{
HitPin = (LinkPin)selectedObj;
return;
}
selectedObj = VisualTreeHelper.GetParent(selectedObj);
}
return;
}
selectedObj = VisualTreeHelper.GetParent(selectedObj);
}
HitLinkableControl = null;
HitPin = null;
}
protected override HitTestResult HitTestCore(PointHitTestParameters hitTestParameters)
{
var source = (BitmapSource)Source;
// Get the pixel of the source that was hit
var x = (int)(hitTestParameters.HitPoint.X / ActualWidth * source.PixelWidth);
var y = (int)(hitTestParameters.HitPoint.Y / ActualHeight * source.PixelHeight);
if (x < 0 || x >= source.PixelWidth || y < 0 || y >= source.PixelHeight)
{
return(null);
}
// Copy the single pixel into a new byte array representing RGBA
var pixel = new byte[4];
source.CopyPixels(new Int32Rect(x, y, 1, 1), pixel, 4, 0);
// Check the alpha (transparency) of the pixel
// - threshold can be adjusted from 0 to 255
if (pixel[3] == 0)
{
return(null);
}
return(new PointHitTestResult(this, hitTestParameters.HitPoint));
}
private void viewPortDisplay_MouseDown(object sender, MouseButtonEventArgs e)
{
if (e.ChangedButton == MouseButton.Middle)
{
middleMouseDown = true;
middleClickPoint = e.GetPosition(this);
Console.WriteLine(middleMouseDown);
return;
}
//hit testing
if (e.ChangedButton != MouseButton.Left)
{
return;
}
Point mouseposition = e.GetPosition(this);
Point3D testpoint3D = new Point3D(mouseposition.X, mouseposition.Y, 0);
Vector3D testdirection = new Vector3D(mouseposition.X, mouseposition.Y, 10);
PointHitTestParameters pointparams =
new PointHitTestParameters(mouseposition);
RayHitTestParameters rayparams =
new RayHitTestParameters(testpoint3D, testdirection);
//test for a result in the Viewport3D
hitgeo = null;
VisualTreeHelper.HitTest(viewPortDisplay, null, HTResult, pointparams);
}
public override void OnApplyTemplate()
{
base.OnApplyTemplate();
this._navigation = Template.FindName("PART_NAVIGATION", this) as ListBox;
this._scrollviewer = Template.FindName("PART_SCROLLVIEWER", this) as ScrollViewer;
this._navigation.SelectionChanged += (l, k) =>
{
int index = Math.Min(this._navigation.SelectedIndex, this.Items.Count - 1);
this.ScrollIntoView(this.Items[index]);
};
// Do ：设置滚动到指定位置后导航跟着改变
this._scrollviewer.ScrollChanged += (l, k) =>
{
var point = this._scrollviewer.TranslatePoint(new Point(10, 10), this);
PointHitTestParameters parameters = new PointHitTestParameters(point);
VisualTreeHelper.HitTest(this, HitTestFilter, HitTestCallBack, parameters);
};
}
private void InputHitTest(Point pt, out IInputElement enabledHit, out IInputElement rawHit, out PointHitTestResult rawHitResult)
{
var hitTestParameters = new PointHitTestParameters(pt);
var inputHitTestResult = new InputHitTestResult();
VisualTreeHelper.HitTest(this, hitTestParameters, InputHitTestFilterCallback, inputHitTestResult.InputHitTestResultCallback);
var visualHit = inputHitTestResult.Result;
rawHit = (visualHit as IInputElement);
rawHitResult = inputHitTestResult.HitTestResult;
enabledHit = null;
while (visualHit != null)
{
var uIElement = visualHit as UIElement;
if (uIElement != null)
{
if (rawHit == null)
{
rawHit = uIElement;
rawHitResult = null;
}
if (uIElement.IsEnabled)
{
enabledHit = uIElement;
return;
}
}
if (visualHit == this)
{
break;
}
visualHit = visualHit.Parent;
}
}
private static DependencyObject HitTest <T>(Point p, UIElement container)
{
PointHitTestParameters parameter = new PointHitTestParameters(p);
DependencyObject hitTestResult = null;
HitTestResultCallback resultCallback = (result) =>
{
UIElement elemCandidateResult = result.VisualHit as UIElement;
// result can be collapsed! Even though documentation indicates otherwise
if (null != elemCandidateResult && elemCandidateResult.Visibility == Visibility.Visible)
{
hitTestResult = result.VisualHit;
return(HitTestResultBehavior.Stop);
}
return(HitTestResultBehavior.Continue);
};
HitTestFilterCallback filterCallBack = (potentialHitTestTarget) =>
{
if (potentialHitTestTarget is T)
{
hitTestResult = potentialHitTestTarget;
return(HitTestFilterBehavior.Stop);
}
return(HitTestFilterBehavior.Continue);
};
VisualTreeHelper.HitTest(container, filterCallBack, resultCallback, parameter);
return(hitTestResult);
}
/// <summary>
/// Performs a hit test to determine whether the specified
/// points are within the bounds of this ScrollViewer
/// </summary>
/// <returns>The result of the hit test</returns>
/// <param name="hitTestParameters">The parameters for hit testing within a visual object</param>
protected override HitTestResult HitTestCore(PointHitTestParameters hitTestParameters)
{
if (VisualChildrenCount > 0)
{
return(VisualTreeHelper.HitTest(GetVisualChild(0), hitTestParameters.HitPoint));
}
return(base.HitTestCore(hitTestParameters));
}
public void HitTest(Viewport3D viewport3D, Point mouseposition)
{
InitHitValues();
PointHitTestParameters pointparams = new PointHitTestParameters(mouseposition);
VisualTreeHelper.HitTest(viewport3D, null, HitResultCallback, pointparams);
}
protected override HitTestResult HitTestCore(PointHitTestParameters hitTestParameters)
{
if (this.HullGeometry.FillContains(hitTestParameters.HitPoint))
{
return(new PointHitTestResult(this, hitTestParameters.HitPoint));
}
return(null);
}
private void ViewPort3D_OnMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
Point mousePos = e.GetPosition(viewPort3d);
PointHitTestParameters hitParams = new PointHitTestParameters(mousePos);
VisualTreeHelper.HitTest(viewPort3d, null, ResultCallback, hitParams);
// System.Diagnostics.Debug.WriteLine("测试打印信息");
}
InspectTreeNode3D HitTest(Point position)
{
var hitParams = new PointHitTestParameters(position);
HitNode = null;
VisualTreeHelper.HitTest(viewport, null, ResultCallback, hitParams);
return(HitNode);
}
private void Watch_view_OnMouseDown(object sender, MouseButtonEventArgs e)
{
Point mousePos = e.GetPosition(watch_view);
PointHitTestParameters hitParams = new PointHitTestParameters(mousePos);
VisualTreeHelper.HitTest(watch_view, null, ResultCallback, hitParams);
e.Handled = true;
}
protected override HitTestResult HitTestCore (PointHitTestParameters hitTestParameters)
{
throw new NotImplementedException ();
}
