private CustomPopupPlacement[] PlacementCallback(Size popup, Size target, Point offset)
{
double x = 0, y = 0;
double gap = Configurations.ToolTipTargetGapInPixels;
PopupPrimaryAxis primaryAxis = PopupPrimaryAxis.None;
switch (this.AttachmentSide)
{
case Side.Left:
x = -(popup.Width + gap);
y = (target.Height - popup.Height) * 0.5;
primaryAxis = PopupPrimaryAxis.Horizontal;
break;
case Side.Right:
x = target.Width + gap;
y = (target.Height - popup.Height) * 0.5;
primaryAxis = PopupPrimaryAxis.Horizontal;
break;
case Side.Top:
x = (target.Width - popup.Width) * 0.5;
y = -(popup.Height + gap);
primaryAxis = PopupPrimaryAxis.Vertical;
break;
case Side.Bottom:
x = (target.Width - popup.Width) * 0.5;
y = target.Height + gap;
primaryAxis = PopupPrimaryAxis.Vertical;
break;
}
return(new CustomPopupPlacement[]
{
new CustomPopupPlacement()
{
Point = new Point(x, y),
PrimaryAxis = primaryAxis
}
});
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="point">Assigns to Point</param>
/// <param name="primaryAxis">Assigns to PrimaryAxis</param>
public CustomPopupPlacement(Point point, PopupPrimaryAxis primaryAxis)
{
_point = point;
_primaryAxis = primaryAxis;
}
// Returns the ith possible alignment for the given PlacementMode
private PointCombination GetPointCombination(PlacementMode placement, int i, out PopupPrimaryAxis axis)
{
Debug.Assert(i >= 0 && i < GetNumberOfCombinations(placement));
bool dropFromRight = SystemParameters.MenuDropAlignment;
switch (placement)
{
case PlacementMode.Bottom:
case PlacementMode.Mouse:
axis = PopupPrimaryAxis.Horizontal;
if (dropFromRight)
{
if (i == 0)
{
return(new PointCombination(InterestPoint.BottomRight, InterestPoint.TopRight));
}
if (i == 1)
{
return(new PointCombination(InterestPoint.TopRight, InterestPoint.BottomRight));
}
}
else
{
if (i == 0)
{
return(new PointCombination(InterestPoint.BottomLeft, InterestPoint.TopLeft));
}
if (i == 1)
{
return(new PointCombination(InterestPoint.TopLeft, InterestPoint.BottomLeft));
}
}
break;
case PlacementMode.Top:
axis = PopupPrimaryAxis.Horizontal;
if (dropFromRight)
{
if (i == 0)
{
return(new PointCombination(InterestPoint.TopRight, InterestPoint.BottomRight));
}
if (i == 1)
{
return(new PointCombination(InterestPoint.BottomRight, InterestPoint.TopRight));
}
}
else
{
if (i == 0)
{
return(new PointCombination(InterestPoint.TopLeft, InterestPoint.BottomLeft));
}
if (i == 1)
{
return(new PointCombination(InterestPoint.BottomLeft, InterestPoint.TopLeft));
}
}
break;
case PlacementMode.Right:
case PlacementMode.Left:
axis = PopupPrimaryAxis.Vertical;
dropFromRight |= DropOpposite;
if (dropFromRight && placement == PlacementMode.Right ||
!dropFromRight && placement == PlacementMode.Left)
{
if (i == 0)
{
return(new PointCombination(InterestPoint.TopLeft, InterestPoint.TopRight));
}
if (i == 1)
{
return(new PointCombination(InterestPoint.BottomLeft, InterestPoint.BottomRight));
}
if (i == 2)
{
return(new PointCombination(InterestPoint.TopRight, InterestPoint.TopLeft));
}
if (i == 3)
{
return(new PointCombination(InterestPoint.BottomRight, InterestPoint.BottomLeft));
}
}
else
{
if (i == 0)
{
return(new PointCombination(InterestPoint.TopRight, InterestPoint.TopLeft));
}
if (i == 1)
{
return(new PointCombination(InterestPoint.BottomRight, InterestPoint.BottomLeft));
}
if (i == 2)
{
return(new PointCombination(InterestPoint.TopLeft, InterestPoint.TopRight));
}
if (i == 3)
{
return(new PointCombination(InterestPoint.BottomLeft, InterestPoint.BottomRight));
}
}
break;
case PlacementMode.Relative:
case PlacementMode.RelativePoint:
case PlacementMode.MousePoint:
case PlacementMode.AbsolutePoint:
axis = PopupPrimaryAxis.Horizontal;
if (dropFromRight)
{
if (i == 0)
{
return(new PointCombination(InterestPoint.TopLeft, InterestPoint.TopRight));
}
if (i == 1)
{
return(new PointCombination(InterestPoint.TopLeft, InterestPoint.TopLeft));
}
if (i == 2)
{
return(new PointCombination(InterestPoint.TopLeft, InterestPoint.BottomRight));
}
if (i == 3)
{
return(new PointCombination(InterestPoint.TopLeft, InterestPoint.BottomLeft));
}
}
else
{
if (i == 0)
{
return(new PointCombination(InterestPoint.TopLeft, InterestPoint.TopLeft));
}
if (i == 1)
{
return(new PointCombination(InterestPoint.TopLeft, InterestPoint.TopRight));
}
if (i == 2)
{
return(new PointCombination(InterestPoint.TopLeft, InterestPoint.BottomLeft));
}
if (i == 3)
{
return(new PointCombination(InterestPoint.TopLeft, InterestPoint.BottomRight));
}
}
break;
case PlacementMode.Center:
axis = PopupPrimaryAxis.None;
return(new PointCombination(InterestPoint.Center, InterestPoint.Center));
case PlacementMode.Absolute:
case PlacementMode.Custom:
default:
axis = PopupPrimaryAxis.None;
return(new PointCombination(InterestPoint.TopLeft, InterestPoint.TopLeft));
}
return(new PointCombination(InterestPoint.TopLeft, InterestPoint.TopRight));
}
// To position the popup, we find the InterestPoints of the placement rectangle/point
// in the screen coordinate space. We also find the InterestPoints of the child in
// the popup's space. Then we attempt all valid combinations of matching InterestPoints
// (based on PlacementMode) to find the position that best fits on the screen.
// NOTE: any reference to the screen implies the monitor for full trust and
// the browser area for partial trust
private void UpdatePosition()
{
if (_popupRoot == null)
{
return;
}
PlacementMode placement = PlacementInternal;
// Get a list of the corners of the target/child in screen space
Point[] placementTargetInterestPoints = GetPlacementTargetInterestPoints(placement);
Point[] childInterestPoints = GetChildInterestPoints(placement);
// Find bounds of screen and child in screen space
Rect targetBounds = GetBounds(placementTargetInterestPoints);
Rect screenBounds;
Rect childBounds = GetBounds(childInterestPoints);
double childArea = childBounds.Width * childBounds.Height;
Rect windowRect = _secHelper.GetWindowRect();
_positionInfo ??= new PositionInfo();
_positionInfo.X = (int)windowRect.X;
_positionInfo.Y = (int)windowRect.Y;
_positionInfo.ChildSize = windowRect.Size;
// Rank possible positions
int bestIndex = -1;
Vector bestTranslation = new Vector(_positionInfo.X, _positionInfo.Y);
double bestScore = -1;
PopupPrimaryAxis bestAxis = PopupPrimaryAxis.None;
int positions;
CustomPopupPlacement[] customPlacements = null;
// Find the number of possible positions
if (placement == PlacementMode.Custom)
{
CustomPopupPlacementCallback customCallback = CustomPopupPlacementCallback;
if (customCallback != null)
{
customPlacements = customCallback(childBounds.Size, targetBounds.Size, new Point(HorizontalOffset, VerticalOffset));
}
positions = customPlacements == null ? 0 : customPlacements.Length;
// Return if callback closed the popup
if (!IsOpen)
{
return;
}
}
else
{
positions = GetNumberOfCombinations(placement);
}
// Try each position until the best one is found
for (int i = 0; i < positions; i++)
{
Vector popupTranslation;
PopupPrimaryAxis axis;
// Get the ith Position to rank
if (placement == PlacementMode.Custom)
{
// The custom callback only calculates relative to 0,0
// so the placementTarget's top/left need to be re-applied.
popupTranslation = (Vector)placementTargetInterestPoints[(int)InterestPoint.TopLeft]
+ (Vector)customPlacements[i].Point; // vector from origin
axis = customPlacements[i].PrimaryAxis;
}
else
{
PointCombination pointCombination = GetPointCombination(placement, i, out axis);
InterestPoint targetInterestPoint = pointCombination.TargetInterestPoint;
InterestPoint childInterestPoint = pointCombination.ChildInterestPoint;
// Compute the vector from the screen origin to the top left corner of the popup
// that will cause the the two interest points to overlap
popupTranslation = placementTargetInterestPoints[(int)targetInterestPoint]
- childInterestPoints[(int)childInterestPoint];
}
// Find percent of popup on screen by translating the popup bounds
// and calculating the percent of the bounds that is on screen
// Note: this score is based on the percent of the popup that is on screen
// not the percent of the child that is on screen. For certain
// scenarios, this may produce in counter-intuitive results.
// If this is a problem, more complex scoring is needed
Rect tranlsatedChildBounds = Rect.Offset(childBounds, popupTranslation);
screenBounds = GetScreenBounds(targetBounds, placementTargetInterestPoints[(int)InterestPoint.TopLeft]);
Rect currentIntersection = Rect.Intersect(screenBounds, tranlsatedChildBounds);
// Calculate area of intersection
double score = currentIntersection != Rect.Empty ? currentIntersection.Width * currentIntersection.Height : 0;
// If current score is better than the best score so far, save the position info
if (score - bestScore > Tolerance)
{
bestIndex = i;
bestTranslation = popupTranslation;
bestScore = score;
bestAxis = axis;
// Stop when we find a popup that is completely on screen
if (Math.Abs(score - childArea) < Tolerance)
{
break;
}
}
}
// Check to see if the pop needs to be nudged onto the screen.
// Popups are not nudged if their axes do not align with the screen axes
// Use the size of the popupRoot in case it is clipping the popup content
Matrix transformToDevice = _secHelper.GetTransformToDevice();
childBounds = new Rect((Size)transformToDevice.Transform((Point)GetChildSize()));
childBounds.Offset(bestTranslation);
Vector childTranslation = (Vector)transformToDevice.Transform(GetChildTranslation());
childBounds.Offset(childTranslation);
screenBounds = GetScreenBounds(targetBounds, placementTargetInterestPoints[(int)InterestPoint.TopLeft]);
Rect intersection = Rect.Intersect(screenBounds, childBounds);
// See if width/height of intersection are less than child's
if (Math.Abs(intersection.Width - childBounds.Width) > Tolerance ||
Math.Abs(intersection.Height - childBounds.Height) > Tolerance)
{
// Nudge Horizontally
Point topLeft = placementTargetInterestPoints[(int)InterestPoint.TopLeft];
Point topRight = placementTargetInterestPoints[(int)InterestPoint.TopRight];
// Create a vector pointing from the top of the placement target to the bottom
// to determine which direction the popup should be nudged in.
// If the vector is zero (NaN's after normalization), nudge horizontally
Vector horizontalAxis = topRight - topLeft;
horizontalAxis.Normalize();
// See if target's horizontal axis is aligned with screen
// (For opaque windows always translate horizontally)
if (!IsTransparent || double.IsNaN(horizontalAxis.Y) || Math.Abs(horizontalAxis.Y) < Tolerance)
{
// Nudge horizontally
if (childBounds.Right > screenBounds.Right)
{
bestTranslation.X = screenBounds.Right - childBounds.Width;
bestTranslation.X -= childTranslation.X;
}
else if (childBounds.Left < screenBounds.Left)
{
bestTranslation.X = screenBounds.Left;
bestTranslation.X -= childTranslation.X;
}
}
else if (IsTransparent && Math.Abs(horizontalAxis.X) < Tolerance)
{
// Nudge vertically, limit horizontally
if (childBounds.Bottom > screenBounds.Bottom)
{
bestTranslation.Y = screenBounds.Bottom - childBounds.Height;
bestTranslation.Y -= childTranslation.Y;
}
else if (childBounds.Top < screenBounds.Top)
{
bestTranslation.Y = screenBounds.Top;
bestTranslation.Y -= childTranslation.Y;
}
}
// Nudge Vertically
Point bottomLeft = placementTargetInterestPoints[(int)InterestPoint.BottomLeft];
// Create a vector pointing from the top of the placement target to the bottom
// to determine which direction the popup should be nudged in
// If the vector is zero (NaN's after normalization), nudge vertically
Vector verticalAxis = topLeft - bottomLeft;
verticalAxis.Normalize();
// Axis is aligned with screen, nudge
if (!IsTransparent || double.IsNaN(verticalAxis.X) || Math.Abs(verticalAxis.X) < Tolerance)
{
if (childBounds.Bottom > screenBounds.Bottom)
{
bestTranslation.Y = screenBounds.Bottom - childBounds.Height;
bestTranslation.Y -= childTranslation.Y;
}
else if (childBounds.Top < screenBounds.Top)
{
bestTranslation.Y = screenBounds.Top;
bestTranslation.Y -= childTranslation.Y;
}
}
else if (IsTransparent && Math.Abs(verticalAxis.Y) < Tolerance)
{
if (childBounds.Right > screenBounds.Right)
{
bestTranslation.X = screenBounds.Right - childBounds.Width;
bestTranslation.X -= childTranslation.X;
}
else if (childBounds.Left < screenBounds.Left)
{
bestTranslation.X = screenBounds.Left;
bestTranslation.X -= childTranslation.X;
}
}
}
// Finally, take the best position and apply it to the popup
int bestX = DoubleUtil.DoubleToInt(bestTranslation.X);
int bestY = DoubleUtil.DoubleToInt(bestTranslation.Y);
if (bestX != _positionInfo.X || bestY != _positionInfo.Y)
{
_positionInfo.X = bestX;
_positionInfo.Y = bestY;
_secHelper.SetPopupPos(true, bestX, bestY, false, 0, 0);
}
Size GetChildSize()
{
if (_popup.Child is { } child)
{
return(child.RenderSize);
}
return(_popupRoot.RenderSize);
}
Point GetChildTranslation()
{
if (_popup.Child is { } child)
{
return(child.TranslatePoint(new Point(), _popupRoot));
}
return(new Point());
}
}
public CustomPopupPlacement(System.Windows.Point point, PopupPrimaryAxis primaryAxis)
{
}
/// <summary>Initializes a new instance of the <see cref="T:System.Windows.Controls.Primitives.CustomPopupPlacement" /> structure.</summary>
/// <param name="point">The <see cref="T:System.Windows.Point" /> that is relative to the <see cref="P:System.Windows.Controls.Primitives.Popup.PlacementTarget" /> where the upper-left corner of the <see cref="T:System.Windows.Controls.Primitives.Popup" /> is placed.</param>
/// <param name="primaryAxis">The <see cref="T:System.Windows.Controls.Primitives.PopupPrimaryAxis" /> along which a <see cref="T:System.Windows.Controls.Primitives.Popup" /> control moves when it is obstructed by a screen edge.</param>
// Token: 0x06005C81 RID: 23681 RVA: 0x001A08A4 File Offset: 0x0019EAA4
public CustomPopupPlacement(Point point, PopupPrimaryAxis primaryAxis)
{
this._point = point;
this._primaryAxis = primaryAxis;
}
// Returns the ith possible alignment for the given PlacementMode
private PointCombination GetPointCombination(PlacementMode placement, int i, out PopupPrimaryAxis axis)
{
Debug.Assert(i >= 0 && i < GetNumberOfCombinations(placement));
bool dropFromRight = SystemParameters.MenuDropAlignment;
switch (placement)
{
case PlacementMode.Bottom:
case PlacementMode.Mouse:
axis = PopupPrimaryAxis.Horizontal;
if (dropFromRight)
{
if (i == 0) return new PointCombination(InterestPoint.BottomRight, InterestPoint.TopRight);
if (i == 1) return new PointCombination(InterestPoint.TopRight, InterestPoint.BottomRight);
}
else
{
if (i == 0) return new PointCombination(InterestPoint.BottomLeft, InterestPoint.TopLeft);
if (i == 1) return new PointCombination(InterestPoint.TopLeft, InterestPoint.BottomLeft);
}
break;
case PlacementMode.Top:
axis = PopupPrimaryAxis.Horizontal;
if (dropFromRight)
{
if (i == 0) return new PointCombination(InterestPoint.TopRight, InterestPoint.BottomRight);
if (i == 1) return new PointCombination(InterestPoint.BottomRight, InterestPoint.TopRight);
}
else
{
if (i == 0) return new PointCombination(InterestPoint.TopLeft, InterestPoint.BottomLeft);
if (i == 1) return new PointCombination(InterestPoint.BottomLeft, InterestPoint.TopLeft);
}
break;
case PlacementMode.Right:
case PlacementMode.Left:
axis = PopupPrimaryAxis.Vertical;
dropFromRight |= DropOpposite;
if ((dropFromRight && placement == PlacementMode.Right) ||
(!dropFromRight && placement == PlacementMode.Left))
{
if (i == 0) return new PointCombination(InterestPoint.TopLeft, InterestPoint.TopRight);
if (i == 1) return new PointCombination(InterestPoint.BottomLeft, InterestPoint.BottomRight);
if (i == 2) return new PointCombination(InterestPoint.TopRight, InterestPoint.TopLeft);
if (i == 3) return new PointCombination(InterestPoint.BottomRight, InterestPoint.BottomLeft);
}
else
{
if (i == 0) return new PointCombination(InterestPoint.TopRight, InterestPoint.TopLeft);
if (i == 1) return new PointCombination(InterestPoint.BottomRight, InterestPoint.BottomLeft);
if (i == 2) return new PointCombination(InterestPoint.TopLeft, InterestPoint.TopRight);
if (i == 3) return new PointCombination(InterestPoint.BottomLeft, InterestPoint.BottomRight);
}
break;
case PlacementMode.Relative:
case PlacementMode.RelativePoint:
case PlacementMode.MousePoint:
case PlacementMode.AbsolutePoint:
axis = PopupPrimaryAxis.Horizontal;
if (dropFromRight)
{
if (i == 0) return new PointCombination(InterestPoint.TopLeft, InterestPoint.TopRight);
if (i == 1) return new PointCombination(InterestPoint.TopLeft, InterestPoint.TopLeft);
if (i == 2) return new PointCombination(InterestPoint.TopLeft, InterestPoint.BottomRight);
if (i == 3) return new PointCombination(InterestPoint.TopLeft, InterestPoint.BottomLeft);
}
else
{
if (i == 0) return new PointCombination(InterestPoint.TopLeft, InterestPoint.TopLeft);
if (i == 1) return new PointCombination(InterestPoint.TopLeft, InterestPoint.TopRight);
if (i == 2) return new PointCombination(InterestPoint.TopLeft, InterestPoint.BottomLeft);
if (i == 3) return new PointCombination(InterestPoint.TopLeft, InterestPoint.BottomRight);
}
break;
case PlacementMode.Center:
axis = PopupPrimaryAxis.None;
return new PointCombination(InterestPoint.Center, InterestPoint.Center);
case PlacementMode.Absolute:
case PlacementMode.Custom:
default:
axis = PopupPrimaryAxis.None;
return new PointCombination(InterestPoint.TopLeft, InterestPoint.TopLeft);
}
return new PointCombination(InterestPoint.TopLeft, InterestPoint.TopRight);
}
public CustomPopupPlacement(System.Windows.Point point, PopupPrimaryAxis primaryAxis)
{
}
