private void panel1_Paint(object sender, PaintEventArgs e)
{
HDC hdc = (HDC)User.GetDC(panel1.Handle);
if (m_arrShape != null)
{
foreach (CShape t in m_arrShape)
{
t.Draw(hdc);
}
}
if (flag)
{
if (m_Shape.ToString() == "CPolygon" && m_arrPoint != null)
{
POINT[] t = new POINT[2];
t[0].x = m_arrPoint[0].x - distance;
t[0].y = m_arrPoint[0].y - distance;
t[1].x = m_arrPoint[0].x + distance;
t[1].y = m_arrPoint[0].y + distance;
CRectangle rec = new CRectangle(t[0], t[1]);
rec.SetDrawMode(GDI.R2_COPYPEN);
rec.Draw(hdc);
POINT[] t1 = new POINT[2];
t1[1] = m_arrPoint[0];
CLine line = new CLine();
line.SetDrawMode(GDI.R2_COPYPEN);
Gan(line);
for (int i = 1; i < m_arrPoint.Length; ++i)
{
// Ve duong thang
t1[0] = t1[1];
t1[1] = m_arrPoint[i];
line.SetPoints(t1);
line.Draw(hdc);
// Ve o vuong nho tai cac dinh
t[0].x = m_arrPoint[i].x - distance;
t[0].y = m_arrPoint[i].y - distance;
t[1].x = m_arrPoint[i].x + distance;
t[1].y = m_arrPoint[i].y + distance;
rec.SetPoints(t);
rec.Draw(hdc);
}
// Ve duong thang
t1[0] = t1[1];
t1[1] = m_End;
line.SetPoints(t1);
line.Draw(hdc);
}
else
{
m_Shape.Draw(hdc);
}
}
User.ReleaseDC(panel1.Handle, hdc);
}
private void panel1_MouseMove(object sender, MouseEventArgs e)
{
toolStripStatusLabel1.Text = e.X.ToString() + " : " + e.Y.ToString();
if (flag)
{
POINT[] T = new POINT[2];
T[0] = m_Start;
T[1] = m_End;
HDC hdc = (HDC)User.GetDC(panel1.Handle);
if (flag1 == false)
{
if (m_Shape.ToString() == "CPolygon")
{
CShape shape = new CLine();
shape.SetPoints(T);
Gan(shape);
shape.Draw(hdc);
}
else
{
m_Shape.SetPoints(T);
m_Shape.Draw(hdc);
}
}
flag1 = false;
if (m_Shape.ToString() == "CEllipse")
{
int temp = Math.Min(Math.Abs(e.X - m_Start.x), Math.Abs(e.Y - m_Start.y));
m_End.x = m_Start.x + Math.Sign(e.X - m_Start.x) * temp;
m_End.y = m_Start.y + Math.Sign(e.Y - m_Start.y) * temp;
}
else
{
m_End.x = e.X;
m_End.y = e.Y;
}
T[1] = m_End;
if (m_Shape.ToString() == "CPolygon")
{
CShape shape = new CLine();
shape.SetPoints(T);
Gan(shape);
shape.Draw(hdc);
}
else
{
m_Shape.SetPoints(T);
m_Shape.Draw(hdc);
}
}
}