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我一直使用Windows窗體，但現在我試圖學習WPF，因爲它的優點。前段時間我創建了一個picturebox控件（在Damienhere的幫助下）。對我而言，將這個控件轉換爲WPF的Image控件非常困難。我在互聯網上找不到任何適當的幫助。Windows窗體 - > WPF圖像控制轉換問題
我的控件用於在書的掃描圖像上的兩頁之間顯示（創建之前）中間。它由兩個可移動的點組成，它們之間的線和左側和右側的區域都充滿了半透明的多邊形。 問題是WPF是很不一樣。甚至很難在Image控件上繪製實心圓。
這裏是我的代碼清單：
public partial class SplitPictureBox : System.Windows.Forms.PictureBox
{
public SplitPictureBox()
{
InitializeComponent();
}
private int mPointMoveInProgress = 0;
private int handleRadius = 5;
public int HandleRaduis
{
get { return handleRadius; }
set { handleRadius = value; }
}
private int middleTop = 0;
private int middleBottom = 0;
private int middle;
public int Middle
{
get
{
return (middleTop + middleBottom) /2;
}
set { middle = value; }
}
private double theta;
public double Theta
{
get
{
return (Math.Atan(((middleTop - middleBottom)/(double)this.Height)) * 180)/Math.PI;
}
set
{
theta = value;
int deltaX = (int)((Math.Tan((Math.PI/180) * value)) * this.Height/2);
middleTop = middle + deltaX;
middleBottom = middle - deltaX;
}
}
protected override void OnPaint(PaintEventArgs pe)
{
base.OnPaint(pe);
SolidBrush left = new SolidBrush(Color.FromArgb(80, Color.Blue));
SolidBrush right = new SolidBrush(Color.FromArgb(80, Color.Green));
SolidBrush brush = new SolidBrush(Color.Red);
pe.Graphics.FillPolygon(left, new Point[4] { new Point(0,0), new Point(middleTop,0),
new Point(middleBottom, this.Height), new Point(0, this.Height)
});
pe.Graphics.FillPolygon(right, new Point[4] { new Point(this.Width,0), new Point(middleTop,0),
new Point(middleBottom, this.Height), new Point(this.Width, this.Height)
});
// Draw line
pe.Graphics.DrawLine(new Pen(Color.Red, 2), new Point(middleTop, handleRadius), new Point(middleBottom, this.Height - handleRadius));
Rectangle rectangle;
// Draw first handle
rectangle = new Rectangle(middleTop - handleRadius, 0, handleRadius * 2, handleRadius * 2);
pe.Graphics.FillEllipse(brush, rectangle);
// Draw second handle
rectangle = new Rectangle(middleBottom - handleRadius, this.Height - handleRadius * 2, handleRadius * 2, handleRadius * 2);
pe.Graphics.FillEllipse(brush, rectangle);
}
private Point moveLineTop;
private Point moveLineBottom;
protected override void OnMouseDown(MouseEventArgs e)
{
moveLineTop = new Point(e.X - middleTop, 0);
moveLineBottom = new Point(e.X - middleBottom, this.Height);
if (Math.Abs(e.X - middleTop) < handleRadius && Math.Abs(e.Y) <= handleRadius * 2)
{
Cursor.Current = Cursors.Hand;
mPointMoveInProgress = 1;
}
else if (Math.Abs(e.X - middleBottom) < handleRadius && Math.Abs(e.Y - this.Height) <= handleRadius * 2)
{
Cursor.Current = Cursors.Hand;
mPointMoveInProgress = 2;
}
else if (Math.Abs(e.X - x) < handleRadius && e.Y > handleRadius * 2 && e.Y < this.Height - handleRadius * 2)
{
Cursor.Current = Cursors.SizeWE;
mPointMoveInProgress = 3;
}
else mPointMoveInProgress = 0;
base.OnMouseDown(e);
}
private int x = 0;
protected override void OnMouseMove(MouseEventArgs e)
{
x = middleTop - (int)((e.Y * (middleTop - middleBottom))/(double)this.Height);
if (mPointMoveInProgress == 1)
{
Cursor.Current = Cursors.Hand;
if (e.X > 0 && e.X < this.Width)
{
middleTop = e.X;
Refresh();
}
}
else if (mPointMoveInProgress == 2)
{
Cursor.Current = Cursors.Hand;
if (e.X > 0 && e.X < this.Width)
{
middleBottom = e.X;
Refresh();
}
}
else if (mPointMoveInProgress == 3)
{
if (e.X - moveLineTop.X >= 0 && e.X - moveLineTop.X <= this.Width &&
e.X - moveLineBottom.X >= 0 && e.X - moveLineBottom.X <= this.Width)
{
Cursor.Current = Cursors.SizeWE;
middleTop = e.X - moveLineTop.X;
middleBottom = e.X - moveLineBottom.X;
Refresh();
}
}
else
{
if (Math.Abs(e.X - middleTop) < handleRadius && Math.Abs(e.Y) <= handleRadius * 2)
Cursor.Current = Cursors.Hand;
else if (Math.Abs(e.X - middleBottom) < handleRadius && Math.Abs(e.Y - this.Height) <= handleRadius * 2)
Cursor.Current = Cursors.Hand;
else if (Math.Abs(e.X - x) < handleRadius && e.Y > handleRadius * 2 && e.Y < this.Height - handleRadius * 2)
Cursor.Current = Cursors.SizeWE;
else Cursor.Current = Cursors.Default;
}
base.OnMouseMove(e);
}
protected override void OnMouseUp(MouseEventArgs e)
{
mPointMoveInProgress = 0;
middle = (middleTop + middleBottom)/2;
base.OnMouseUp(e);
}
}
任何人可以幫我嗎？給我一些有用的鏈接或代碼示例。 謝謝！