// Mouse is moved.
// None button is pressed, ot left button is pressed.
public override void OnMouseMove(Canvas drawArea, MouseEventArgs e)
{
Point point = drawArea.BackTrackMouse(new Point(e.X, e.Y));
wasMove = true;
if (e.Button == MouseButtons.None)
{
Cursor cursor = Cursors.Default;
for (int i = drawArea.Document.Count - 1; i >= 0; i--)
{
int n = drawArea.Document[i].HitTest(point);
if (n > 0)
{
cursor = drawArea.Document[i].GetHandleCursor(n);
break;
}
}
drawArea.Cursor = cursor;
return;
}
if (e.Button != MouseButtons.Left)
{
return;
}
if (point.X < 0)
{
point.X = 0;
}
if (point.X > drawArea.Width)
{
point.X = drawArea.Width;
}
if (point.Y < 0)
{
point.Y = 0;
}
if (point.Y > drawArea.Height)
{
point.Y = drawArea.Height;
}
if (lastPoint.X < 0)
{
lastPoint.X = 0;
}
if (lastPoint.X > drawArea.Width)
{
lastPoint.X = drawArea.Width;
}
if (lastPoint.Y < 0)
{
point.Y = 0;
}
if (lastPoint.Y > drawArea.Height)
{
lastPoint.Y = drawArea.Height;
}
// Left button is pressed
// Find difference between previous and current position
int dx = point.X - lastPoint.X;
int dy = point.Y - lastPoint.Y;
//加快移动速度
int zoom = drawArea.MessageControl != null ?drawArea.MessageControl.Zoom : 6;
if (Math.Abs(dx) < zoom && Math.Abs(dy) < zoom)
{
return;
}
int xOffset = dx % zoom;
int yOffset = dy % zoom;
if (xOffset != 0 || yOffset % zoom != 0)
{
dx -= xOffset;
dy -= yOffset;
}
if (!ClampCanvas(drawArea, point))
{
return;
}
lastPoint = point;
xOffset = point.X % zoom;
yOffset = point.Y % zoom;
if (xOffset != 0 || yOffset != 0)
{
if (xOffset <= zoom / 2)
{
point.X -= xOffset;
}
else
{
point.X = point.X + zoom - xOffset;
}
if (yOffset <= zoom / 2)
{
point.Y -= yOffset;
}
else
{
point.Y = point.Y + zoom - yOffset;
}
}
// resize
if (selectMode == SelectionMode.Size)
{
if (resizedObject != null)
{
//if (resizedObject.Type == ShapeType.Text)
//{
// ((ShapeLabel)resizedObject).FrameSizeFixed = true;
//}
if (resizedObject.Type != ShapeType.Line)
{
switch (resizedObjectHandle)
{
case 1:
if (point.X >= resizedObject.VirtualBounds.Right)
{
point.X = resizedObject.VirtualBounds.Right - zoom;
}
if (point.Y >= resizedObject.VirtualBounds.Bottom)
{
point.Y = resizedObject.VirtualBounds.Bottom - zoom;
}
break;
case 2:
if (point.Y >= resizedObject.VirtualBounds.Bottom)
{
point.Y = resizedObject.VirtualBounds.Bottom - zoom;
}
break;
case 3:
if (point.X <= resizedObject.VirtualBounds.Left)
{
point.X = resizedObject.VirtualBounds.Left + zoom;
}
if (point.Y >= resizedObject.VirtualBounds.Bottom)
{
point.Y = resizedObject.VirtualBounds.Bottom - zoom;
}
break;
case 4:
if (point.X < resizedObject.VirtualBounds.Left)
{
point.X = resizedObject.VirtualBounds.Left + zoom;
}
break;
case 5:
if (point.X <= resizedObject.VirtualBounds.Left)
{
point.X = resizedObject.VirtualBounds.Left + zoom;
}
if (point.Y <= resizedObject.VirtualBounds.Top)
{
point.Y = resizedObject.VirtualBounds.Top + zoom;
}
break;
case 6:
if (point.Y <= resizedObject.VirtualBounds.Top)
{
point.Y = resizedObject.VirtualBounds.Top + zoom;
}
break;
case 7:
if (point.X >= resizedObject.VirtualBounds.Right)
{
point.X = resizedObject.VirtualBounds.Right - zoom;
}
if (point.Y < resizedObject.VirtualBounds.Top)
{
point.Y = resizedObject.VirtualBounds.Top + zoom;
}
break;
case 8:
if (point.X >= resizedObject.VirtualBounds.Right)
{
point.X = resizedObject.VirtualBounds.Right - zoom;
}
break;
default:
break;
}
lastPoint = point;
}
resizedObject.MoveHandleTo(point, resizedObjectHandle);
drawArea.Document.ChangedService.MarkChanged();
if (resizedObject is ShapeLine)
{
lastPoint = resizedObject.GetHandle(resizedObjectHandle);
}
drawArea.Refresh();
}
}
// move
if (selectMode == SelectionMode.Move)
{
int movecount = 0;
foreach (ShapeBase sb in drawArea.Document.SelectedShapes)
{
if (sb.IsBackground)
{
continue;
}
movecount++;
sb.Move(dx, dy);
}
if (movecount > 0)
{
drawArea.Document.ChangedService.MarkChanged();
}
drawArea.Cursor = Cursors.SizeAll;
drawArea.Refresh();
}
if (selectMode == SelectionMode.NetSelection)
{
drawArea.NetRectangle = ShapeControlPaintNew.GetNormalizedRectangle(startPoint, lastPoint);
drawArea.Refresh();
return;
}
}