protected override void OnMouseLeftButtonUp(MouseButtonEventArgs e)
{
if (this.DataContext is PageItem)
{
PageItem Page = this.DataContext as PageItem;
Point p = SnapGrid.Snap(e.GetPosition(this), GridSize, GridOffsetLeft, GridOffsetTop);
if (this.IsMouseCaptured)
{
if ((currentLineItem.X1 == p.X && currentLineItem.Y1 == p.Y) ||
(currentLineItem.X1 == currentLineItem.X2 && currentLineItem.Y1 == currentLineItem.Y2))
{
Page.Items.Remove(currentLineItem);
currentLineItem = null;
this.ReleaseMouseCapture();
}
else
{
currentLineItem.X2 = p.X;
currentLineItem.Y2 = p.Y;
this.ReleaseMouseCapture();
}
}
}
}
void LineAdorner_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
if (!IsControlModeOn)
{
if (this.IsMouseCaptured)
{
CustomLineElement line = this.AdornedElement as CustomLineElement;
LineLogicItem lineItem = line.DataContext as LineLogicItem;
Point p = SnapGrid.Snap(e.GetPosition(line), gridSize, GridOffsetLeft, GridOffsetTop);
if (IsStartPoint)
{
lineItem.X1 = p.X;
lineItem.Y1 = p.Y;
}
else
{
lineItem.X2 = p.X;
lineItem.Y2 = p.Y;
}
// update line item modification flag
//if (originalLineItem.CheckForModification(lineItem))
// lineItem.IsModified = true;
this.InvalidateVisual();
this.ReleaseMouseCapture();
this.Cursor = Cursors.Arrow;
}
}
}
//private bool IsControlModeOn = false;
Point GetClickLocation(Point p, double offsetLeft, double offsetTop)
{
return(new Point()
{
X = SnapGrid.Snap(p.X, GridSizeCreate, offsetLeft),
Y = SnapGrid.Snap(p.Y, GridSizeCreate, offsetTop)
});
}
void LineAdorner_MouseMove(object sender, MouseEventArgs e)
{
if (this.IsMouseCaptured)
{
if (this.AdornedElement.GetType() == typeof(CustomLineElement))
{
CustomLineElement line = this.AdornedElement as CustomLineElement;
LineLogicItem lineItem = line.DataContext as LineLogicItem;
Point p = SnapGrid.Snap(e.GetPosition(line), gridSize, GridOffsetLeft, GridOffsetTop);
// edit mode: move line start point OR move line end point
if (mode == LineAdornerMode.Edit)
{
if (IsStartPoint)
{
lineItem.X1 = p.X;
lineItem.Y1 = p.Y;
}
else
{
lineItem.X2 = p.X;
lineItem.Y2 = p.Y;
}
}
// move mode: move line start point AND move line end point
if (mode == LineAdornerMode.Move)
{
if (IsStartPoint)
{
double dX = lineItem.X1 - p.X;
double dY = lineItem.Y1 - p.Y;
Point pEnd = new Point(lineItem.X2 - dX, lineItem.Y2 - dY);
lineItem.X1 = p.X;
lineItem.Y1 = p.Y;
lineItem.X2 = pEnd.X;
lineItem.Y2 = pEnd.Y;
}
else
{
double dX = lineItem.X2 - p.X;
double dY = lineItem.Y2 - p.Y;
Point pStart = new Point(lineItem.X1 - dX, lineItem.Y1 - dY);
lineItem.X2 = p.X;
lineItem.Y2 = p.Y;
lineItem.X1 = pStart.X;
lineItem.Y1 = pStart.Y;
}
}
this.InvalidateVisual();
}
}
}
protected override void OnMouseMove(MouseEventArgs e)
{
if (this.DataContext is PageItem)
{
PageItem Page = this.DataContext as PageItem;
Point p = SnapGrid.Snap(e.GetPosition(this), GridSize, GridOffsetLeft, GridOffsetTop);
if (this.IsMouseCaptured)
{
currentLineItem.X2 = p.X;
currentLineItem.Y2 = p.Y;
}
}
}
private void Thumb_DragDelta(object sender, System.Windows.Controls.Primitives.DragDeltaEventArgs e)
{
var item = (sender as FrameworkElement).DataContext as Item;
if (item is LineLogicItem)
{
// ILine line = item as ILine;
}
else if (item is DataBlockLogicItem)
{
SnapDataBlockLogicItem(item, e.HorizontalChange, e.VerticalChange, DataBlockSnapMode.Auto);
//item.IsModified = true;
}
else
{
double left = item.X + e.HorizontalChange;
double top = item.Y + e.VerticalChange;
item.X = SnapGrid.Snap(left, GridSize, GridOffsetLeft);
item.Y = SnapGrid.Snap(top, GridSize, GridOffsetTop);
//item.IsModified = true;
}
}
void LineAdorner_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
if (Keyboard.Modifiers == ModifierKeys.Control)
{
IsControlModeOn = true;
}
CustomLineElement line = this.AdornedElement as CustomLineElement;
LineLogicItem lineItem = line.DataContext as LineLogicItem;
Point p = SnapGrid.Snap(e.GetPosition(line), GridSize, GridOffsetLeft, GridOffsetTop);
double dStart = 0.0;
double dEnd = 0.0;
if (!this.IsMouseCaptured)
{
// copy original coordinates
originalLineItem = new LineLogicItem()
{
X1 = lineItem.X1,
Y1 = lineItem.Y1,
X2 = lineItem.X2,
Y2 = lineItem.Y2
};
// calculate start/end point coordinates
dStart = Math.Sqrt(Math.Pow(lineItem.X1 - p.X, 2) + Math.Pow(lineItem.Y1 - p.Y, 2));
dEnd = Math.Sqrt(Math.Pow(lineItem.X2 - p.X, 2) + Math.Pow(lineItem.Y2 - p.Y, 2));
}
if (IsControlModeOn)
{
if (this.IsMouseCaptured)
{
if (IsStartPoint)
{
lineItem.X1 = p.X;
lineItem.Y1 = p.Y;
}
else
{
lineItem.X2 = p.X;
lineItem.Y2 = p.Y;
}
this.InvalidateVisual();
this.ReleaseMouseCapture();
IsControlModeOn = false;
}
else
{
IsStartPoint = dStart < dEnd ? true : false;
this.Cursor = Cursors.Hand;
this.InvalidateVisual();
this.CaptureMouse();
}
}
else
{
if (!this.IsMouseCaptured)
{
IsStartPoint = dStart < dEnd ? true : false;
this.Cursor = Cursors.Hand;
this.InvalidateVisual();
this.CaptureMouse();
}
}
}
protected override void OnMouseLeftButtonDown(MouseButtonEventArgs e)
{
if (this.DataContext is PageItem)
{
//if (Keyboard.Modifiers == ModifierKeys.Control)
// IsControlModeOn = true;
/*
* PageItem Page = this.DataContext as PageItem;
* Point p = GetClickLocation(e.GetPosition(this), GridOffsetLeft, GridOffsetTop);
* Page.Items.Add(new AndGateLogicItem()
* {
* IsNew = true,
* IsModified = false,
* IsDeleted = false,
* X = p.X,
* Y = p.Y,
* Z = 1
* });
*/
PageItem Page = this.DataContext as PageItem;
Page.SelectedItem = null;
Point p = SnapGrid.Snap(e.GetPosition(this), GridSize, GridOffsetLeft, GridOffsetTop);
if (this.IsMouseCaptured)
{
//currentLineItem.X2 = p.X;
//currentLineItem.Y2 = p.Y;
//c.ReleaseMouseCapture();
}
else
{
Point pHit = e.GetPosition(this);
CustomLineElement lineHit = null;
HitTestResult result = VisualTreeHelper.HitTest(this, pHit);
if (result != null)
{
if (result.VisualHit.GetType() == typeof(CustomLineElement))
{
lineHit = result.VisualHit as CustomLineElement;
}
}
if (lineHit == null && selectedLine == null)
{
currentLineItem = new LineLogicItem()
{
IsNew = false,
IsModified = false,
IsDeleted = false,
X1 = p.X,
Y1 = p.Y,
X2 = p.X,
Y2 = p.Y,
Z = 0
};
Page.Items.Add(currentLineItem);
this.CaptureMouse();
}
if (lineHit != selectedLine && selectedLine != null)
{
if (Keyboard.Modifiers != ModifierKeys.Control)
{
var LineAdornerLayer = AdornerLayer.GetAdornerLayer(selectedLine);
if (LineAdornerLayer != null)
{
LineAdornerLayer.Remove(LineAdornerLayer.GetAdorners(selectedLine)[0]);
}
selectedLine = null;
}
}
if (lineHit != null && lineHit != selectedLine)
{
selectedLine = lineHit;
var LineAdornerLayer = AdornerLayer.GetAdornerLayer(lineHit);
if (LineAdornerLayer != null)
{
LineAdornerLayer.Add(new LineAdorner(lineHit));
}
}
//currentLineItem = new LineLogicItem() { X1 = p.X, Y1 = p.Y, X2 = p.X, Y2 = p.Y, Z = 0 };
//Page.Items.Add(currentLineItem);
//c.CaptureMouse();
}
}
}
protected override void OnMouseRightButtonDown(MouseButtonEventArgs e)
{
if (this.DataContext is PageItem)
{
PageItem Page = this.DataContext as PageItem;
Point p = SnapGrid.Snap(e.GetPosition(this), GridSize, GridOffsetLeft, GridOffsetTop);
if (this.IsMouseCaptured)
{
Page.Items.Remove(currentLineItem);
currentLineItem = null;
this.ReleaseMouseCapture();
}
else
{
// delete line element
/*
* Point pHit = e.GetPosition(this);
*
* CustomLineElement lineHit = null;
* HitTestResult result = VisualTreeHelper.HitTest(this, pHit);
* if (result != null)
* {
* if (result.VisualHit.GetType() == typeof(CustomLineElement))
* {
* lineHit = result.VisualHit as CustomLineElement;
* Page.Items.Remove(lineHit.DataContext as LineLogicItem);
* }
* }
*/
}
/*
* Canvas c = sender as Canvas;
* Point p = SnapGrid.Snap(e.GetPosition(this), GridSize, GridOffsetLeft, GridOffsetTop);
* CustomLineElement lineHit = null;
*
* HitTestResult result = VisualTreeHelper.HitTest(c, p);
* if (result != null)
* {
* if (result.VisualHit.GetType() == typeof(CustomLineElement))
* {
* lineHit = result.VisualHit as CustomLineElement;
* }
* }
*
* if (selectedLine != null && lineHit != selectedLine)
* {
* var LineAdornerLayer = AdornerLayer.GetAdornerLayer(selectedLine);
* LineAdornerLayer.Remove(LineAdornerLayer.GetAdorners(selectedLine)[0]);
* selectedLine = null;
* }
*
* if (lineHit != null && lineHit != selectedLine)
* {
* selectedLine = lineHit;
* var LineAdornerLayer = AdornerLayer.GetAdornerLayer(lineHit);
* LineAdornerLayer.Add(new LineAdorner(lineHit));
* }
*/
}
}
void SnapDataBlockLogicItem(ILocation locacion, double dX, double dY, DataBlockSnapMode mode)
{
double left = SnapGrid.Snap(locacion.X + dX, UnitConverter.CmToDip(0.1));
//double top = SnapGrid.Snap(locacion.Y + dY, UnitConverter.CmToDip(1.0), UnitConverter.CmToDip(0.1));
double top = UnitConverter.CmToDip(Math.Floor(UnitConverter.DipToCm(locacion.Y + dY)) + 0.1);
switch (mode)
{
case DataBlockSnapMode.Input:
{
left = UnitConverter.CmToDip(1.3);
}
break;
case DataBlockSnapMode.Output:
{
left = UnitConverter.CmToDip(31.2);
}
break;
case DataBlockSnapMode.Auto:
{
if (left < UnitConverter.CmToDip(1.3))
{
// X < 1.3cm
left = UnitConverter.CmToDip(1.3);
}
else if (left >= UnitConverter.CmToDip(1.3) && left < UnitConverter.CmToDip(11.2))
{
// 1.3cm >= X > 11.2cm
left = UnitConverter.CmToDip(1.3);
}
else if (left >= UnitConverter.CmToDip(11.2) && left < UnitConverter.CmToDip(31.2))
{
// 11.2cm >= X > 31.2cm
if (left <= UnitConverter.CmToDip(21.2))
{
// move to inputs
left = UnitConverter.CmToDip(1.3);
}
else
{
// move to outputs
left = UnitConverter.CmToDip(31.2);
}
}
else
{
// X >= 31.2cm
left = UnitConverter.CmToDip(31.2);
}
}
break;
}
if (top <= UnitConverter.CmToDip(2.1))
{
// Y <= 2.1cm
top = UnitConverter.CmToDip(2.1);
}
else if (top >= UnitConverter.CmToDip(25.1))
{
// Y >= 25.1
top = UnitConverter.CmToDip(25.1);
}
else
{
// 2.1cm < Y < 25.1cm
//top = top + UnitConverter.CmToDip(0.1);
}
locacion.X = left;
locacion.Y = top;
}