添加项目文件。
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liming 蔡
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using System;
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using System.Collections.Generic;
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using System.Drawing;
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using System.Drawing.Drawing2D;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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namespace JYControl
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{
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/// <summary>
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/// Base class for the button renderers
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/// </summary>
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public class LBButtonRenderer : LBRendererBase
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{
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#region (* Variables *)
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protected RectangleF rectCtrl;
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protected RectangleF rectBody;
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protected RectangleF rectText;
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protected float drawRatio = 1.0F;
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#endregion
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#region (* Constructor *)
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public LBButtonRenderer()
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{
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this.rectCtrl = new RectangleF(0, 0, 0, 0);
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}
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#endregion
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#region (* Overrided methods *)
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/// <summary>
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/// Update the rectangles for drawing
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/// </summary>
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/// <returns></returns>
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public override bool Update()
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{
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// Check Button object
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if (this.Button == null)
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throw new NullReferenceException("Invalid 'Button' object");
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// Control rectangle
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this.rectCtrl.X = 0;
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this.rectCtrl.Y = 0;
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this.rectCtrl.Width = this.Button.Width;
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this.rectCtrl.Height = this.Button.Height;
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if (this.Button.Style == LBButton.ButtonStyle.Circular)
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{
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if (rectCtrl.Width < rectCtrl.Height)
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rectCtrl.Height = rectCtrl.Width;
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else if (rectCtrl.Width > rectCtrl.Height)
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rectCtrl.Width = rectCtrl.Height;
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if (rectCtrl.Width < 10)
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rectCtrl.Width = 10;
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if (rectCtrl.Height < 10)
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rectCtrl.Height = 10;
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}
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this.rectBody = this.rectCtrl;
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this.rectBody.Width -= 1;
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this.rectBody.Height -= 1;
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this.rectText = this.rectCtrl;
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this.rectText.Width -= 2;
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this.rectText.Height -= 2;
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// Calculate ratio
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drawRatio = (Math.Min(rectCtrl.Width, rectCtrl.Height)) / 200;
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if (drawRatio == 0.0)
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drawRatio = 1;
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return true;
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}
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/// <summary>
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/// Draw the button object
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/// </summary>
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/// <param name="Gr"></param>
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public override void Draw(Graphics Gr)
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{
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if (Gr == null)
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throw new ArgumentNullException("Gr", "Invalid Graphics object");
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if (this.Button == null)
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throw new NullReferenceException("Invalid 'Button' object");
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this.DrawBackground(Gr, this.rectCtrl);
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this.DrawBody(Gr, this.rectBody);
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this.DrawText(Gr, this.rectText);
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}
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#endregion
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#region (* Properies *)
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/// <summary>
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/// Get the associated button object
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/// </summary>
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public LBButton Button
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{
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get { return this.Control as LBButton; }
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}
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#endregion
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#region (* Virtual method *)
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/// <summary>
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/// Draw the background of the control
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/// </summary>
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/// <param name="Gr"></param>
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/// <param name="rc"></param>
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/// <returns></returns>
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public virtual bool DrawBackground(Graphics Gr, RectangleF rc)
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{
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if (this.Button == null)
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return false;
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Color c = this.Button.BackColor;
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SolidBrush br = new SolidBrush(c);
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Pen pen = new Pen(c);
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Rectangle _rcTmp = new Rectangle(0, 0, this.Button.Width, this.Button.Height);
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Gr.DrawRectangle(pen, _rcTmp);
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Gr.FillRectangle(br, rc);
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br.Dispose();
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pen.Dispose();
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return true;
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}
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/// <summary>
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/// Draw the body of the control
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/// </summary>
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/// <param name="Gr"></param>
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/// <param name="rc"></param>
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/// <returns></returns>
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public virtual bool DrawBody(Graphics Gr, RectangleF rc)
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{
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if (this.Button == null)
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return false;
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Color bodyColor = this.Button.ButtonColor;
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Color cDark = LBColorManager.StepColor(bodyColor, 20);
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LinearGradientBrush br1 = new LinearGradientBrush(rc,
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bodyColor,
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cDark,
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45);
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if ((this.Button.Style == LBButton.ButtonStyle.Circular) ||
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(this.Button.Style == LBButton.ButtonStyle.Elliptical))
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{
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Gr.FillEllipse(br1, rc);
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}
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else
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{
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GraphicsPath path = this.RoundedRect(rc, 15F);
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Gr.FillPath(br1, path);
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path.Dispose();
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}
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if (this.Button.State == LBButton.ButtonState.Pressed)
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{
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RectangleF _rc = rc;
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_rc.Inflate(-15F * this.drawRatio, -15F * drawRatio);
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LinearGradientBrush br2 = new LinearGradientBrush(_rc,
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cDark,
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bodyColor,
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45);
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if ((this.Button.Style == LBButton.ButtonStyle.Circular) ||
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(this.Button.Style == LBButton.ButtonStyle.Elliptical))
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{
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Gr.FillEllipse(br2, _rc);
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}
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else
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{
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GraphicsPath path = this.RoundedRect(_rc, 10F);
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Gr.FillPath(br2, path);
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path.Dispose();
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}
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br2.Dispose();
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}
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br1.Dispose();
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return true;
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}
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/// <summary>
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/// Draw the text of the control
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/// </summary>
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/// <param name="Gr"></param>
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/// <param name="rc"></param>
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/// <returns></returns>
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public virtual bool DrawText(Graphics Gr, RectangleF rc)
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{
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if (this.Button == null)
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return false;
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//Draw Strings
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Font font = new Font(this.Button.Font.FontFamily,
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this.Button.Font.Size * this.drawRatio,
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this.Button.Font.Style);
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String str = this.Button.Label;
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Color bodyColor = this.Button.ButtonColor;
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Color cDark = LBColorManager.StepColor(bodyColor, 20);
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SizeF size = Gr.MeasureString(str, font);
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SolidBrush br1 = new SolidBrush(bodyColor);
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SolidBrush br2 = new SolidBrush(cDark);
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Gr.DrawString(str,
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font,
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br1,
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rc.Left + ((rc.Width * 0.5F) - (float)(size.Width * 0.5F)) + (float)(1 * this.drawRatio),
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rc.Top + ((rc.Height * 0.5F) - (float)(size.Height * 0.5)) + (float)(1 * this.drawRatio));
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Gr.DrawString(str,
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font,
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br2,
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rc.Left + ((rc.Width * 0.5F) - (float)(size.Width * 0.5F)),
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rc.Top + ((rc.Height * 0.5F) - (float)(size.Height * 0.5)));
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br1.Dispose();
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br2.Dispose();
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font.Dispose();
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return false;
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}
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#endregion
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#region (* Protected Methods *)
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protected GraphicsPath RoundedRect(RectangleF rect, float radius)
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{
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RectangleF baseRect = rect;
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float diameter = (radius * this.drawRatio) * 2.0f;
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SizeF sizeF = new SizeF(diameter, diameter);
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RectangleF arc = new RectangleF(baseRect.Location, sizeF);
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GraphicsPath path = new GraphicsPath();
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// top left arc
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path.AddArc(arc, 180, 90);
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// top right arc
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arc.X = baseRect.Right - diameter;
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path.AddArc(arc, 270, 90);
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// bottom right arc
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arc.Y = baseRect.Bottom - diameter;
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path.AddArc(arc, 0, 90);
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// bottom left arc
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arc.X = baseRect.Left;
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path.AddArc(arc, 90, 90);
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path.CloseFigure();
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return path;
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}
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#endregion
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}
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}
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