Spread选择器之探索

Spread控件，系统默认提供的了2种选择器，分别通过配置属性即可实现。同时，我们也可自定义实现选择器。

• 系统选择器：

  1: this.fpSpread1.SelectionRenderer = new FarPoint.Win.Spread.DefaultSelectionRenderer();

• 系统渐变选择器

  1: FarPoint.Win.Spread.GradientSelectionRenderer gsr = new FarPoint.Win.Spread.GradientSelectionRenderer();

  2: gsr.Color1 = Color.Green;

  3: gsr.Color2 = Color.LightGreen;

  4: gsr.LinearGradientMode = System.Drawing.Drawing2D.LinearGradientMode.Vertical;

  5: gsr.Opacity = 100;

  6: this.fpSpread1.SelectionRenderer = gsr;

• 系统选择器，修改颜色

  1: fpSpread1.ActiveSheet.SelectionStyle = FarPoint.Win.Spread.SelectionStyles.SelectionColors;

  2: fpSpread1.ActiveSheet.SelectionPolicy = FarPoint.Win.Spread.Model.SelectionPolicy.Range;

  3: fpSpread1.ActiveSheet.SelectionUnit = FarPoint.Win.Spread.Model.SelectionUnit.Cell;

  4: fpSpread1.ActiveSheet.SelectionBackColor = Color.Yellow;

  5: fpSpread1.ActiveSheet.SelectionForeColor = Color.Green;

• 自定义选择器--渐变色

  1:                     

  2: fpSpread1.ActiveSheet.SelectionStyle = FarPoint.Win.Spread.SelectionStyles.SelectionRenderer;

  3: SelectionRenderer_GradientSelection grd = new SelectionRenderer_GradientSelection(Color.Red, Color.PowderBlue, System.Drawing.Drawing2D.LinearGradientMode.Horizontal, 80);

  4: this.fpSpread1.SelectionRenderer = grd;  

  5:                  

  6: public class SelectionRenderer_GradientSelection : FarPoint.Win.Spread.GradientSelectionRenderer

  7:     {

  8: 

  9:         private Color clr1;

 10: 

 11:         private Color clr2;

 12: 

 13:         private System.Drawing.Drawing2D.LinearGradientMode gradMode;

 14: 

 15:         private int op;

 16: 

 17:         public SelectionRenderer_GradientSelection(Color color1, Color color2, System.Drawing.Drawing2D.LinearGradientMode mode, int opacity) :

 18: 

 19:             base(Color.Beige, Color.Blue, System.Drawing.Drawing2D.LinearGradientMode.ForwardDiagonal, 220)

 20:         {

 21:             clr1 = color1;

 22:             clr2 = color2;

 23:             gradMode = mode;

 24:             op = opacity;

 25:         }

 26: 

 27:         public new void PaintSelection(Graphics g, int x, int y, int width, int height)

 28:         {

 29:             if (((width > 0)

 30:                         && (height < 0)))

 31:             {

 32:                 Color c1 = Color.FromArgb(op, clr1.R, clr1.G, clr1.B);

 33:                 Color c2 = Color.FromArgb(op, clr2.R, clr2.G, clr2.B);

 34:                 LinearGradientBrush selectionBrush = new System.Drawing.Drawing2D.LinearGradientBrush(new Rectangle(x, y, width, height), c1,

 35:     c2, gradMode);

 36:                 g.FillRectangle(selectionBrush, x, y, width, height);

 37:                 selectionBrush.Dispose();

 38:             }

 39:         }

 40:     }