protected override void OnMouseDown(MouseEventArgs e)
{
if (GuiUtil.PtInRect(e.X, e.Y, this.ClientRectangle) == false)
{
// 防止在卷滚条上单击后拖动造成副作用
goto END1;
}
this.Capture = true;
this.Focus();
// Graphics g = Graphics.FromHwnd(this.Handle);
// g.TransformPoints(System.Drawing.Drawing2D.CoordinateSpace.Page, System.Drawing.Drawing2D.CoordinateSpace.World, pts);
PointF p1 = ScreenToPhysic(new Point(e.X, e.Y));
// 屏幕坐标
_startHit = this.HitTest(
p1.X,
p1.Y);
END1:
base.OnMouseDown(e);
}
// parameters:
// x 内部坐标
HitTestResult HitTest(float x, float y)
{
HitTestResult result = new HitTestResult();
result.X = x;
result.Y = y;
result.CornerType = CornerType.None;
if (this.Image == null)
return result;
Rectangle display_rect = GetPictureBoxZoomSize();
float x_ratio = (float)display_rect.Width / (float)this.Image.Width;
float scale_ratio = (float)1 / x_ratio;
// 左上
RectangleF rect = GetBoxRect(_points[0], scale_ratio);
if (GuiUtil.PtInRect(x,
y,
rect) == true)
{
result.CornerType = CornerType.LeftTop;
return result;
}
// 右上
rect = GetBoxRect(_points[1], scale_ratio);
if (GuiUtil.PtInRect(x,
y,
rect) == true)
{
result.CornerType = CornerType.RightTop;
return result;
}
// 右下
rect = GetBoxRect(_points[2], scale_ratio);
if (GuiUtil.PtInRect(x,
y,
rect) == true)
{
result.CornerType = CornerType.RightBottom;
return result;
}
// 左下
rect = GetBoxRect(_points[3], scale_ratio);
if (GuiUtil.PtInRect(x,
y,
rect) == true)
{
result.CornerType = CornerType.LeftBottom;
return result;
}
return result;
}
protected override void OnMouseUp(MouseEventArgs e)
{
this.Capture = false;
base.OnMouseUp(e);
if (_startHit != null && _startHit.CornerType != CornerType.None)
{
PointF p1 = ScreenToPhysic(new Point(e.X, e.Y));
ChangeCornerPosition(_startHit.CornerType, Convert.ToInt32(p1.X), Convert.ToInt32(p1.Y));
}
_startHit = null;
}
protected override void OnMouseDown(MouseEventArgs e)
{
if (GuiUtil.PtInRect(e.X, e.Y, this.ClientRectangle) == false)
{
// 防止在卷滚条上单击后拖动造成副作用
goto END1;
}
this.Capture = true;
this.Focus();
// Graphics g = Graphics.FromHwnd(this.Handle);
// g.TransformPoints(System.Drawing.Drawing2D.CoordinateSpace.Page, System.Drawing.Drawing2D.CoordinateSpace.World, pts);
PointF p1 = ScreenToPhysic(new Point(e.X, e.Y));
// 屏幕坐标
_startHit = this.HitTest(
p1.X,
p1.Y);
END1:
base.OnMouseDown(e);
}