private HitAreaType DetectHit(MouseEventArgs e)
{
HitAreaType hit = HitAreaType.None;
for (int i = 0; i < _Regions.Count; i++)
{
hit = _Regions[i].HitTest(e.Location);
if (hit != HitAreaType.None)
{
_SelectedRegion = _Regions[i];
Cursor = _CursorsByHitType[(int)hit];
Refresh();
OnRegionSelected(i, _Regions[i].Rectangle);
break;
}
}
if (_SelectedRegion != null && hit == HitAreaType.None)
{
Cursor = Cursors.Default;
_SelectedRegion = null;
Refresh();
}
return(hit);
}
private void StartResizeRegion(MouseEventArgs e, HitAreaType hitType)
{
_EditMode = EditModeType.Resize;
_EditRegionStartPoint = e.Location;
_EditRegionRectangle = _SelectedRegion.ScreenRectangle;
Cursor = _CursorsByHitType[(int)hitType];
_ResizeMode = hitType;
Refresh();
}
private void MoveResizeRegion(MouseEventArgs e)
{
Rectangle rc = _EditRegionRectangle;
int x = rc.X, y = rc.Y, w = rc.Width, h = rc.Height;
if (_ResizeMode == HitAreaType.BottomLeft || _ResizeMode == HitAreaType.BottomMiddle || _ResizeMode == HitAreaType.BottomRight)
{
y = rc.Top;
h = e.Location.Y - y;
if (h < 0)
{
y = e.Location.Y;
h = -h;
switch (_ResizeMode)
{
case HitAreaType.BottomLeft: _ResizeMode = HitAreaType.TopLeft; break;
case HitAreaType.BottomMiddle: _ResizeMode = HitAreaType.TopMiddle; break;
case HitAreaType.BottomRight: _ResizeMode = HitAreaType.TopRight; break;
default: break;
}
}
}
else
if (_ResizeMode == HitAreaType.TopLeft || _ResizeMode == HitAreaType.TopMiddle || _ResizeMode == HitAreaType.TopRight)
{
y = e.Location.Y;
h = rc.Bottom - y;
if (h < 0)
{
y = rc.Top;
h = -h;
switch (_ResizeMode)
{
case HitAreaType.TopLeft: _ResizeMode = HitAreaType.BottomLeft; break;
case HitAreaType.TopMiddle: _ResizeMode = HitAreaType.BottomMiddle; break;
case HitAreaType.TopRight: _ResizeMode = HitAreaType.BottomRight; break;
default: break;
}
}
}
if (_ResizeMode == HitAreaType.BottomRight || _ResizeMode == HitAreaType.TopRight || _ResizeMode == HitAreaType.MidRight)
{
x = rc.Left;
w = e.Location.X - x;
if (w < 0)
{
x = e.Location.X;
w = -w;
switch (_ResizeMode)
{
case HitAreaType.TopRight: _ResizeMode = HitAreaType.TopLeft; break;
case HitAreaType.MidRight: _ResizeMode = HitAreaType.MidLeft; break;
case HitAreaType.BottomRight: _ResizeMode = HitAreaType.BottomLeft; break;
default: break;
}
}
}
else
if (_ResizeMode == HitAreaType.BottomLeft || _ResizeMode == HitAreaType.TopLeft || _ResizeMode == HitAreaType.MidLeft)
{
x = e.Location.X;
w = rc.Right - x;
if (w < 0)
{
x = rc.Right;
w = -w;
switch (_ResizeMode)
{
case HitAreaType.TopLeft: _ResizeMode = HitAreaType.TopRight; break;
case HitAreaType.MidLeft: _ResizeMode = HitAreaType.MidRight; break;
case HitAreaType.BottomLeft: _ResizeMode = HitAreaType.BottomRight; break;
default: break;
}
}
}
_EditRegionRectangle = new Rectangle(x, y, w, h);
var refrect = CalcImageRectangle();
_EditRegionRectangle.Intersect(refrect);
Refresh();
return;
}
