/// <summary>
/// 重新绘制视图的事件处理
/// </summary>
/// <param name="e">事件参数</param>
protected virtual void OnViewPaint(PaintEventArgs e, SimpleRectangleTransform trans)
{
if (ViewPaint != null)
{
ViewPaint(this, e);
}
}
/// <summary>
/// 刷新坐标转换对象
/// </summary>
protected virtual void RefreshScaleTransform()
{
Debug.WriteLine(" documentview call RefreshScaleTransform()");
SimpleRectangleTransform transform = this.myTransform as SimpleRectangleTransform;
if (transform == null)
{
return;
}
System.Drawing.Rectangle rect = this.ClientRectangle;
transform.SourceRect = rect;
System.Drawing.Point p = this.AutoScrollPosition;
//rect.Offset( this.AutoScrollPosition.X , this.AutoScrollPosition.Y );
//transform.SourceRect = rect ;
float xrate = (float)this.ClientToViewXRate;
float yrate = (float)this.ClientToViewYRate;
transform.DescRectF = new System.Drawing.RectangleF(
-p.X * xrate,
-p.Y * yrate,
rect.Width * xrate,
rect.Height * yrate);
}
protected virtual void TransformPaint(PaintEventArgs e, SimpleRectangleTransform trans)
{
if (trans == null)
{
return;
}
System.Drawing.Rectangle rect = e.ClipRectangle;
rect.Offset(-1, -1);
rect.Width += 2;
rect.Height += 2;
rect = System.Drawing.Rectangle.Intersect(trans.SourceRect, rect);
if (rect.IsEmpty)
{
return;
}
System.Drawing.RectangleF rectf = trans.TransformRectangleF(
(float)rect.Left,
(float)rect.Top,
(float)rect.Width,
(float)rect.Height);
rect.X = (int)Math.Floor((double)rectf.Left);
rect.Y = (int)Math.Floor((double)rectf.Top);
rect.Width = (int)System.Math.Ceiling((double)rectf.Width);
rect.Height = (int)System.Math.Ceiling((double)rectf.Height);
e.Graphics.PageUnit = this.intGraphicsUnit;
e.Graphics.ResetTransform();
e.Graphics.ScaleTransform(this.fXZoomRate, this.fYZoomRate);
double rate = this.ClientToViewXRate * (double)this.fXZoomRate;
e.Graphics.TranslateTransform(
(float)((double)trans.SourceRect.Left * rate - (double)trans.DescRectF.X),
(float)((double)trans.SourceRect.Top * rate - (double)trans.DescRectF.Y));
if (trans.XZoomRate < 1f)
{
rect.Width += (int)System.Math.Ceiling((double)(1f / trans.XZoomRate));
}
if (trans.YZoomRate < 1f)
{
rect.Height += (int)System.Math.Ceiling((double)(1f / trans.YZoomRate));
}
System.Windows.Forms.PaintEventArgs e2 =
new System.Windows.Forms.PaintEventArgs(
e.Graphics,
rect);
e2.Graphics.ResetClip();
e2.Graphics.SetClip(new Rectangle(rect.Left, rect.Top, rect.Width + 2, rect.Height + 2));
OnViewPaint(e2, trans);
}
/// <summary>
/// 添加一个转换关系
/// </summary>
/// <param name="SourceRect">原始区域矩形边框</param>
/// <param name="DescRect">目标区域矩形边框</param>
/// <remarks>新增的转换关系</remarks>
public SimpleRectangleTransform Add(
System.Drawing.Rectangle SourceRect,
System.Drawing.Rectangle DescRect)
{
SimpleRectangleTransform NewItem = new SimpleRectangleTransform(SourceRect, DescRect);
myItems.Add(NewItem);
return(NewItem);
}
/// <summary>
/// 添加一个转换关系
/// </summary>
/// <param name="SourceLeft">原始区域边框左端位置</param>
/// <param name="SourceTop">原始区域边框顶端位置</param>
/// <param name="SourceWidth">原始区域边框宽度</param>
/// <param name="SourceHeight">原始区域边框高度</param>
/// <param name="DescLeft">目标区域边框左端位置</param>
/// <param name="DescTop">目标区域边框顶端位置</param>
/// <param name="DescWidth">目标区域边框宽度</param>
/// <param name="DescHeight">目标区域边框高度</param>
public SimpleRectangleTransform Add(
int SourceLeft,
int SourceTop,
int SourceWidth,
int SourceHeight,
int DescLeft,
int DescTop,
int DescWidth,
int DescHeight)
{
SimpleRectangleTransform NewItem = new SimpleRectangleTransform(
new System.Drawing.Rectangle(SourceLeft, SourceTop, SourceWidth, SourceHeight),
new System.Drawing.Rectangle(DescLeft, DescTop, DescWidth, DescHeight));
myItems.Add(NewItem);
return(NewItem);
}
protected System.Drawing.Bitmap CreateContentBitmap(float rate, System.Drawing.Color BmpBackColor)
{
SimpleRectangleTransform trans = this.myTransform as SimpleRectangleTransform;
if (trans == null)
{
return(null);
}
System.Drawing.Size size = this.AutoScrollMinSize;
size.Width = (int)(size.Width * rate);
size.Height = (int)(size.Height * rate);
if (size.Width <= 0 || size.Height <= 0)
{
return(null);
}
System.Drawing.Bitmap bmp = new Bitmap(size.Width, size.Height);
float rate2 = rate;
float rateback = this.fXZoomRate;
try
{
using (System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(bmp))
{
g.Clear(BmpBackColor);
g.PageUnit = this.intGraphicsUnit;
g.ScaleTransform(rate2, rate2);
g.TranslateTransform(-trans.DescRectF.X, -trans.DescRectF.Y);
System.Windows.Forms.PaintEventArgs e = new PaintEventArgs(g, trans.DescRect);
this.fXZoomRate = rate;
this.OnViewPaint(e, trans);
this.fXZoomRate = rateback;
}
return(bmp);
}
catch (Exception ext)
{
this.fXZoomRate = rateback;
throw ext;
}
}
public int Add(SimpleRectangleTransform item)
{
return(myItems.Add(item));
}