protected override HCShapeLineObj GetObjAt(int x, int y)
{
HCShapeLineObj vResult = HCShapeLineObj.sloNone;
if (HC.PtInRect(new RECT(StartPt.X - PointSize, StartPt.Y - PointSize,
StartPt.X + PointSize, StartPt.Y + PointSize), new POINT(x, y)))
{
vResult = HCShapeLineObj.sloStart;
}
else
if (HC.PtInRect(new RECT(EndPt.X - PointSize, EndPt.Y - PointSize,
EndPt.X + PointSize, EndPt.Y + PointSize), new POINT(x, y)))
{
vResult = HCShapeLineObj.sloEnd;
}
else
{
RECT vRect = ClientRect();
vRect.Inflate(PointSize, PointSize);
if (HC.PtInRect(vRect, x, y)) // 在边框点宽度外
{
vRect.Inflate(-PointSize - PointSize, -PointSize - PointSize);
if (!HC.PtInRect(vRect, x, y))
{
vResult = HCShapeLineObj.sloLine;
}
}
}
return(vResult);
}
protected override void SetActive(bool value)
{
base.SetActive(value);
if (!this.Active)
{
FActiveOjb = HCShapeLineObj.sloNone;
}
}
public HCShapeLine() : base()
{
Style = HCShapeStyle.hssLine;
FStartPt = new POINT(0, 0);
FEndPt = new POINT(0, 0);
FWidth = 1;
FActiveOjb = HCShapeLineObj.sloNone;
FLineStyle = HCPenStyle.psSolid;
}
public override bool MouseMove(MouseEventArgs e)
{
if (StructState == HCStructState.hstcStructing)
{
FEndPt = new POINT(e.X, e.Y);
return(true);
}
bool vResult = false;
if ((e.Button == MouseButtons.Left) && (FActiveOjb != HCShapeLineObj.sloNone))
{
vResult = true;
switch (FActiveOjb)
{
case HCShapeLineObj.sloLine:
FStartPt.X = FStartPt.X + e.X - FMousePt.X;
FStartPt.Y = FStartPt.Y + e.Y - FMousePt.Y;
FEndPt.X = FEndPt.X + e.X - FMousePt.X;
FEndPt.Y = FEndPt.Y + e.Y - FMousePt.Y;
FMousePt.X = e.X;
FMousePt.Y = e.Y;
break;
case HCShapeLineObj.sloStart:
FStartPt.X = e.X;
FStartPt.Y = e.Y;
break;
case HCShapeLineObj.sloEnd:
FEndPt.X = e.X;
FEndPt.Y = e.Y;
break;
}
}
else
{
HCShapeLineObj vLineOjb = GetObjAt(e.X, e.Y);
if (Active && ((vLineOjb == HCShapeLineObj.sloStart) || (vLineOjb == HCShapeLineObj.sloEnd)))
{
this.Cursor = Cursors.Cross;
}
else
if (vLineOjb != HCShapeLineObj.sloNone)
{
this.Cursor = Cursors.SizeAll;
}
vResult = vLineOjb != HCShapeLineObj.sloNone;
}
return(vResult);
}
protected override HCShapeLineObj GetObjAt(int x, int y)
{
HCShapeLineObj vResult = HCShapeLineObj.sloNone;
if (HC.PtInRect(new RECT(StartPt.X - PointSize, StartPt.Y - PointSize,
StartPt.X + PointSize, StartPt.Y + PointSize), new POINT(x, y)))
{
vResult = HCShapeLineObj.sloStart;
}
else
if (HC.PtInRect(new RECT(EndPt.X - PointSize, EndPt.Y - PointSize,
EndPt.X + PointSize, EndPt.Y + PointSize), new POINT(x, y)))
{
vResult = HCShapeLineObj.sloEnd;
}
else
{
RECT vRect = ClientRect();
vRect.Inflate(PointSize, PointSize);
IntPtr vRgn1 = GDI.CreateEllipticRgnIndirect(ref vRect);
try
{
if (GDI.PtInRegion(vRgn1, x, y)) // 在外围
{
vRect.Inflate(-PointSize - PointSize, -PointSize - PointSize);
IntPtr vRgn2 = GDI.CreateEllipticRgnIndirect(ref vRect);
try
{
if (!GDI.PtInRegion(vRgn2, x, y)) // 不在内围
{
vResult = HCShapeLineObj.sloLine;
}
}
finally
{
GDI.DeleteObject(vRgn2);
}
}
}
finally
{
GDI.DeleteObject(vRgn1);
}
}
return(vResult);
}
public override bool MouseDown(MouseEventArgs e)
{
if (e.Button != MouseButtons.Left)
{
return(false);
}
bool vResult = false;
if (StructState != HCStructState.hstcStop) // 正在构建
{
if (StructState == HCStructState.hstcStart) // 开妈构建
{
FStartPt = new POINT(e.X, e.Y);
FEndPt = new POINT(e.X, e.Y);
StructState = HCStructState.hstcStructing;
}
else // 构建进行中按下，完成构建
{
StructOver();
}
vResult = true;
}
else
{
HCShapeLineObj vLineObje = GetObjAt(e.X, e.Y);
if (FActiveOjb != vLineObje)
{
FActiveOjb = vLineObje;
Active = FActiveOjb != HCShapeLineObj.sloNone;
vResult = Active;
}
else
{
vResult = vLineObje != HCShapeLineObj.sloNone;
}
if ((vResult) && (FActiveOjb == HCShapeLineObj.sloLine))
{
FMousePt.X = e.X;
FMousePt.Y = e.Y;
}
}
return(vResult);
}
protected virtual HCShapeLineObj GetObjAt(int x, int y)
{
HCShapeLineObj vResult = HCShapeLineObj.sloNone;
if (HC.PtInRect(new RECT(FStartPt.X - PointSize, FStartPt.Y - PointSize,
FStartPt.X + PointSize, FStartPt.Y + PointSize), new POINT(x, y)))
{
vResult = HCShapeLineObj.sloStart;
}
else
if (HC.PtInRect(new RECT(FEndPt.X - PointSize, FEndPt.Y - PointSize,
FEndPt.X + PointSize, FEndPt.Y + PointSize), new POINT(x, y)))
{
vResult = HCShapeLineObj.sloEnd;
}
else
{
POINT[] vPointArr = new POINT[4];
vPointArr[0] = new POINT(FStartPt.X - PointSize, FStartPt.Y);
vPointArr[1] = new POINT(FStartPt.X + PointSize, FStartPt.Y);
vPointArr[2] = new POINT(FEndPt.X + PointSize, FEndPt.Y);
vPointArr[3] = new POINT(FEndPt.X - PointSize, FEndPt.Y);
IntPtr vRgn = GDI.CreatePolygonRgn(vPointArr, 4, GDI.WINDING);
try
{
if (GDI.PtInRegion(vRgn, x, y))
{
vResult = HCShapeLineObj.sloLine;
}
}
finally
{
GDI.DeleteObject(vRgn);
}
}
return(vResult);
}
