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);
}
}
}
private void Form1_MouseDown(object sender, MouseEventArgs e)
{
m_End.X = e.X;
m_End.Y = e.Y;
flag = !flag;
if (flag) // bat dau ve
{
m_Start.X = e.X;
m_Start.Y = e.Y;
}
else
{
// Chuyen toa do 2 diem thanh mang cac diem
Point[] T = new Point[2];
T[0] = m_Start;
T[1] = m_End;
// Them tham so cho hinh can ve
m_Shape.SetPoints(T);
m_Shape._Color = m_Color;
m_Shape.Fill = m_Fill;
// Ve
Graphics grImage = Graphics.FromImage(bmpNew);
Graphics gr = this.CreateGraphics();
m_Shape.Draw(gr); // ve len man hinh
m_Shape.Draw(grImage); // ve len anh (trong vung nho)
gr.Dispose();
grImage.Dispose();
// Them hinh vao tap hop
m_arrShape.Add(m_Shape);
switch (m_Shape.ToString())
{
case "CLine":
m_Shape = new CLine();
break;
case "CEllipse":
m_Shape = new CEllipse();
break;
}
}
}