实例介绍

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Drawing;
using System.ComponentModel;
namespace ControlExs
{
//******************************************************************************
//
// 说明:图形按钮类
// 原作者:Vartan Simonian
// 链接:http://www.codeproject.com/Articles/29010/WinForm-ImageButton
//
//******************************************************************************
/// <summary>
/// 图形按钮类
/// </summary>
public class ImageButton : PictureBox, IButtonControl
{
#region Fileds
private const int WM_KEYDOWN = 0x0100;
private const int WM_KEYUP = 0x0101;
private DialogResult _DialogResult;
private Image _HoverImage;
private Image _DownImage;
private Image _NormalImage;
private bool _hover = false;
private bool _down = false;
private bool _isDefault = false;
private bool _holdingSpace = false;
private ToolTip _toolTip = new ToolTip();
#endregion
#region Constructor
public ImageButton()
: base()
{
this.BackColor = Color.Transparent;
this.Size = new Size(75, 23);
}
#endregion
#region IButtonControl Members
public DialogResult DialogResult
{
get
{
return _DialogResult;
}
set
{
if (Enum.IsDefined(typeof(DialogResult), value))
{
_DialogResult = value;
}
}
}
public void NotifyDefault(bool value)
{
if (_isDefault != value)
{
_isDefault = value;
}
}
public void PerformClick()
{
base.OnClick(EventArgs.Empty);
}
#endregion
#region Properties
[Category("Appearance")]
[Description("Image to show when the button is hovered over.")]
public Image HoverImage
{
get { return _HoverImage; }
set { _HoverImage = value; if (_hover) Image = value; }
}
[Category("Appearance")]
[Description("Image to show when the button is depressed.")]
public Image DownImage
{
get { return _DownImage; }
set { _DownImage = value; if (_down) Image = value; }
}
[Category("Appearance")]
[Description("Image to show when the button is not in any other state.")]
public Image NormalImage
{
get { return _NormalImage; }
set { _NormalImage = value; if (!(_hover || _down)) Image = value; }
}
[Browsable(true)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
[Category("Appearance")]
[Description("The text associated with the control.")]
public override string Text
{
get
{
return base.Text;
}
set
{
base.Text = value;
}
}
[Browsable(true)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
[Category("Appearance")]
[Description("The font used to display text in the control.")]
public override Font Font
{
get
{
return base.Font;
}
set
{
base.Font = value;
}
}
[Description("当鼠标放在控件可见处的提示文本")]
public string ToolTipText { get; set; }
#endregion
#region Description Changes
[Description("Controls how the ImageButton will handle image placement and control sizing.")]
public new PictureBoxSizeMode SizeMode { get { return base.SizeMode; } set { base.SizeMode = value; } }
[Description("Controls what type of border the ImageButton should have.")]
public new BorderStyle BorderStyle { get { return base.BorderStyle; } set { base.BorderStyle = value; } }
#endregion
#region Hiding
[Browsable(false)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
public new Image Image { get { return base.Image; } set { base.Image = value; } }
[Browsable(false)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
public new ImageLayout BackgroundImageLayout { get { return base.BackgroundImageLayout; } set { base.BackgroundImageLayout = value; } }
[Browsable(false)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
public new Image BackgroundImage { get { return base.BackgroundImage; } set { base.BackgroundImage = value; } }
[Browsable(false)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
public new String ImageLocation { get { return base.ImageLocation; } set { base.ImageLocation = value; } }
[Browsable(false)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
public new Image ErrorImage { get { return base.ErrorImage; } set { base.ErrorImage = value; } }
[Browsable(false)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
public new Image InitialImage { get { return base.InitialImage; } set { base.InitialImage = value; } }
[Browsable(false)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
public new bool WaitOnLoad { get { return base.WaitOnLoad; } set { base.WaitOnLoad = value; } }
#endregion
#region override
protected override void OnMouseEnter(EventArgs e)
{
//show tool tip
if (ToolTipText != string.Empty)
{
HideToolTip();
ShowTooTip(ToolTipText);
}
base.OnMouseEnter(e);
}
protected override void OnMouseMove(MouseEventArgs e)
{
_hover = true;
if (_down)
{
if ((_DownImage != null) && (Image != _DownImage))
Image = _DownImage;
}
else
if (_HoverImage != null)
Image = _HoverImage;
else
Image = _NormalImage;
base.OnMouseMove(e);
}
protected override void OnMouseLeave(EventArgs e)
{
_hover = false;
Image = _NormalImage;
base.OnMouseLeave(e);
}
protected override void OnMouseDown(MouseEventArgs e)
{
base.Focus();
OnMouseUp(null);
_down = true;
if (_DownImage != null)
Image = _DownImage;
base.OnMouseDown(e);
}
protected override void OnMouseUp(MouseEventArgs e)
{
_down = false;
if (_hover)
{
if (_HoverImage != null)
Image = _HoverImage;
}
else
Image = _NormalImage;
base.OnMouseUp(e);
}
public override bool PreProcessMessage(ref Message msg)
{
if (msg.Msg == WM_KEYUP)
{
if (_holdingSpace)
{
if ((int)msg.WParam == (int)Keys.Space)
{
OnMouseUp(null);
PerformClick();
}
else if ((int)msg.WParam == (int)Keys.Escape
|| (int)msg.WParam == (int)Keys.Tab)
{
_holdingSpace = false;
OnMouseUp(null);
}
}
return true;
}
else if (msg.Msg == WM_KEYDOWN)
{
if ((int)msg.WParam == (int)Keys.Space)
{
_holdingSpace = true;
OnMouseDown(null);
}
else if ((int)msg.WParam == (int)Keys.Enter)
{
PerformClick();
}
return true;
}
else
return base.PreProcessMessage(ref msg);
}
protected override void OnLostFocus(EventArgs e)
{
_holdingSpace = false;
OnMouseUp(null);
base.OnLostFocus(e);
}
protected override void OnPaint(PaintEventArgs pe)
{
base.OnPaint(pe);
if ((!string.IsNullOrEmpty(Text)) && (pe != null) && (base.Font != null))
{
SizeF drawStringSize = pe.Graphics.MeasureString(base.Text, base.Font);
PointF drawPoint;
if (base.Image != null)
{
drawPoint = new PointF(
base.Image.Width / 2 - drawStringSize.Width / 2,
base.Image.Height / 2 - drawStringSize.Height / 2);
}
else
{
drawPoint = new PointF(
base.Width / 2 - drawStringSize.Width / 2,
base.Height / 2 - drawStringSize.Height / 2);
}
using (SolidBrush drawBrush = new SolidBrush(base.ForeColor))
{
pe.Graphics.DrawString(base.Text, base.Font, drawBrush, drawPoint);
}
}
}
protected override void Dispose(bool disposing)
{
if (disposing)
{
if (_toolTip != null)
_toolTip.Dispose();
}
_toolTip = null;
base.Dispose(disposing);
}
protected override void OnTextChanged(EventArgs e)
{
Refresh();
base.OnTextChanged(e);
}
#endregion
#region Private
private void ShowTooTip(string toolTipText)
{
_toolTip.Active = true;
_toolTip.SetToolTip(this, toolTipText);
}
private void HideToolTip()
{
_toolTip.Active = false;
}
#endregion
}
}
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Text;
using System.IO;
using System.Reflection;
namespace ControlExs
{
/// <summary>
/// 窗体自绘辅助类
/// </summary>
public class RenderHelper
{
/// <summary>
/// 设置窗体的圆角矩形
/// </summary>
/// <param name="form">需要设置的窗体</param>
/// <param name="rgnRadius">圆角矩形的半径</param>
public static void SetFormRoundRectRgn(Form form, int rgnRadius)
{
int hRgn = 0;
hRgn = Win32.CreateRoundRectRgn(0, 0, form.Width 1, form.Height 1, rgnRadius, rgnRadius);
Win32.SetWindowRgn(form.Handle, hRgn, true);
Win32.DeleteObject(hRgn);
}
/// <summary>
/// 移动窗体
/// </summary>
public static void MoveWindow(Form form)
{
Win32.ReleaseCapture();
Win32.SendMessage(form.Handle, Win32.WM_NCLBUTTONDOWN, Win32.HTCAPTION, 0);
}
/// <summary>
/// 取低位 X 坐标
/// </summary>
public static int LOWORD(int value)
{
return value & 0xFFFF;
}
/// <summary>
/// 取高位 Y 坐标
/// </summary>
public static int HIWORD(int value)
{
return value >> 16;
}
/// <summary>
/// 绘制窗体边框
/// </summary>
/// <param name="destForm">需要绘制边框的窗体</param>
/// <param name="g">绘制边框所用的绘图对象</param>
/// <param name="fringeImg">边框图片</param>
/// <param name="radius">边框的圆角矩形</param>
public static void DrawFormFringe(Form destForm, Graphics g, Image fringeImg, int radius)
{
DrawImageWithNineRect(
g,
fringeImg,
new Rectangle(-radius, -radius, destForm.ClientSize.Width 2 * radius, destForm.ClientSize.Height 2 * radius),
new Rectangle(0, 0, fringeImg.Width, fringeImg.Height));
}
/// <summary>
/// 利用九宫图绘制图像
/// </summary>
/// <param name="g">绘图对象</param>
/// <param name="img">所需绘制的图片</param>
/// <param name="targetRect">目标矩形</param>
/// <param name="srcRect">来源矩形</param>
public static void DrawImageWithNineRect(Graphics g, Image img, Rectangle targetRect, Rectangle srcRect)
{
int offset = 5;
Rectangle NineRect = new Rectangle(img.Width / 2 - offset, img.Height / 2 - offset, 2 * offset, 2 * offset);
int x = 0, y = 0, nWidth, nHeight;
int xSrc = 0, ySrc = 0, nSrcWidth, nSrcHeight;
int nDestWidth, nDestHeight;
nDestWidth = targetRect.Width;
nDestHeight = targetRect.Height;
// 左上-------------------------------------;
x = targetRect.Left;
y = targetRect.Top;
nWidth = NineRect.Left - srcRect.Left;
nHeight = NineRect.Top - srcRect.Top;
xSrc = srcRect.Left;
ySrc = srcRect.Top;
g.DrawImage(img, new Rectangle(x, y, nWidth, nHeight), xSrc, ySrc, nWidth, nHeight, GraphicsUnit.Pixel);
// 上-------------------------------------;
x = targetRect.Left NineRect.Left - srcRect.Left;
nWidth = nDestWidth - nWidth - (srcRect.Right - NineRect.Right);
xSrc = NineRect.Left;
nSrcWidth = NineRect.Right - NineRect.Left;
nSrcHeight = NineRect.Top - srcRect.Top;
g.DrawImage(img, new Rectangle(x, y, nWidth, nHeight), xSrc, ySrc, nSrcWidth, nSrcHeight, GraphicsUnit.Pixel);
// 右上-------------------------------------;
x = targetRect.Right - (srcRect.Right - NineRect.Right);
nWidth = srcRect.Right - NineRect.Right;
xSrc = NineRect.Right;
g.DrawImage(img, new Rectangle(x, y, nWidth, nHeight), xSrc, ySrc, nWidth, nHeight, GraphicsUnit.Pixel);
// 左-------------------------------------;
x = targetRect.Left;
y = targetRect.Top NineRect.Top - srcRect.Top;
nWidth = NineRect.Left - srcRect.Left;
nHeight = targetRect.Bottom - y - (srcRect.Bottom - NineRect.Bottom);
xSrc = srcRect.Left;
ySrc = NineRect.Top;
nSrcWidth = NineRect.Left - srcRect.Left;
nSrcHeight = NineRect.Bottom - NineRect.Top;
g.DrawImage(img, new Rectangle(x, y, nWidth, nHeight), xSrc, ySrc, nSrcWidth, nSrcHeight, GraphicsUnit.Pixel);
// 中-------------------------------------;
x = targetRect.Left NineRect.Left - srcRect.Left;
nWidth = nDestWidth - nWidth - (srcRect.Right - NineRect.Right);
xSrc = NineRect.Left;
nSrcWidth = NineRect.Right - NineRect.Left;
g.DrawImage(img, new Rectangle(x, y, nWidth, nHeight), xSrc, ySrc, nSrcWidth, nSrcHeight, GraphicsUnit.Pixel);
// 右-------------------------------------;
x = targetRect.Right - (srcRect.Right - NineRect.Right);
nWidth = srcRect.Right - NineRect.Right;
xSrc = NineRect.Right;
nSrcWidth = srcRect.Right - NineRect.Right;
g.DrawImage(img, new Rectangle(x, y, nWidth, nHeight), xSrc, ySrc, nSrcWidth, nSrcHeight, GraphicsUnit.Pixel);
// 左下-------------------------------------;
x = targetRect.Left;
y = targetRect.Bottom - (srcRect.Bottom - NineRect.Bottom);
nWidth = NineRect.Left - srcRect.Left;
nHeight = srcRect.Bottom - NineRect.Bottom;
xSrc = srcRect.Left;
ySrc = NineRect.Bottom;
g.DrawImage(img, new Rectangle(x, y, nWidth, nHeight), xSrc, ySrc, nWidth, nHeight, GraphicsUnit.Pixel);
// 下-------------------------------------;
x = targetRect.Left NineRect.Left - srcRect.Left;
nWidth = nDestWidth - nWidth - (srcRect.Right - NineRect.Right);
xSrc = NineRect.Left;
nSrcWidth = NineRect.Right - NineRect.Left;
nSrcHeight = srcRect.Bottom - NineRect.Bottom;
g.DrawImage(img, new Rectangle(x, y, nWidth, nHeight), xSrc, ySrc, nSrcWidth, nSrcHeight, GraphicsUnit.Pixel);
// 右下-------------------------------------;
x = targetRect.Right - (srcRect.Right - NineRect.Right);
nWidth = srcRect.Right - NineRect.Right;
xSrc = NineRect.Right;
g.DrawImage(img, new Rectangle(x, y, nWidth, nHeight), xSrc, ySrc, nWidth, nHeight, GraphicsUnit.Pixel);
}
/// <summary>
/// 获取当前命名空间下嵌入的资源图片
/// </summary>
/// <param name="imagePath">嵌入的图片资源的路径</param>
public static Image GetImageFormResourceStream(string imagePath)
{
return Image.FromStream(
Assembly.GetExecutingAssembly().
GetManifestResourceStream(
MethodBase.GetCurrentMethod().DeclaringType.Namespace "." imagePath));
}
/// <summary>
/// 获取绘制带有阴影的字符串的图像
/// </summary>
/// <param name="str">需要绘制的字符串</param>
/// <param name="font">显示字符串的字体</param>
/// <param name="foreColor">字符串的颜色</param>
/// <param name="shadowColor">字符串阴影颜色</param>
/// <param name="shadowWidth">阴影的宽度</param>
/// <returns>绘有发光字符串的Image对象</returns>
public static Image GetStringImgWithShadowEffect(string str, Font font, Color foreColor, Color shadowColor, int shadowWidth)
{
Bitmap bitmap = null;//实例化Bitmap类
using (Graphics g = Graphics.FromHwnd(IntPtr.Zero))//实例化Graphics类
{
SizeF size = g.MeasureString(str, font);//对字符串进行测量
using (Bitmap bmp = new Bitmap((int)size.Width, (int)size.Height))//通过文字的大小实例化Bitmap类
using (Graphics Var_G_Bmp = Graphics.FromImage(bmp))//实例化Bitmap类
using (SolidBrush Var_BrushBack = new SolidBrush(Color.FromArgb(16, shadowColor.R, shadowColor.G, shadowColor.B)))//根据RGB的值定义画刷
using (SolidBrush Var_BrushFore = new SolidBrush(foreColor))//定义画刷
{
Var_G_Bmp.SmoothingMode = SmoothingMode.HighQuality;//设置为高质量
Var_G_Bmp.InterpolationMode = InterpolationMode.HighQualityBilinear;//设置为高质量的收缩
Var_G_Bmp.TextRenderingHint = TextRenderingHint.AntiAliasGridFit;//消除锯齿
Var_G_Bmp.DrawString(str, font, Var_BrushBack, 0, 0);//给制文字
bitmap = new Bitmap(bmp.Width shadowWidth, bmp.Height shadowWidth);//根据辉光文字的大小实例化Bitmap类
using (Graphics Var_G_Bitmap = Graphics.FromImage(bitmap))//实例化Graphics类
{
Var_G_Bitmap.SmoothingMode = SmoothingMode.HighQuality;//设置为高质量
Var_G_Bitmap.InterpolationMode = InterpolationMode.HighQualityBilinear;//设置为高质量的收缩
Var_G_Bitmap.TextRenderingHint = TextRenderingHint.AntiAliasGridFit;//消除锯齿
//遍历辉光文字的各象素点
for (int x = 0; x <= shadowWidth; x )
{
for (int y = 0; y <= shadowWidth; y )
{
Var_G_Bitmap.DrawImageUnscaled(bmp, x, y);//绘制辉光文字的点
}
}
Var_G_Bitmap.DrawString(str, font, Var_BrushFore, shadowWidth / 2, shadowWidth / 2);//绘制文字
}
}
}
return bitmap;
}
/// <summary>
/// 建立带有圆角样式的路径。
/// </summary>
/// <param name="rect">用来建立路径的矩形。</param>
/// <param name="radius">圆角的大小。</param>
/// <returns>建立的路径。</returns>
public static GraphicsPath CreateRoundPath(Rectangle rect, int radius)
{
GraphicsPath path = new GraphicsPath();
int radiusCorrection = 1;
path.AddArc(rect.X, rect.Y, radius, radius, 180, 90);
path.AddArc(
rect.Right - radius - radiusCorrection,
rect.Y,
radius,
radius,
270,
90);
path.AddArc(
rect.Right - radius - radiusCorrection,
rect.Bottom - radius - radiusCorrection,
radius,
radius, 0, 90);
path.AddArc(
rect.X,
rect.Bottom - radius - radiusCorrection,
radius,
radius,
90,
90);
path.CloseFigure();
return path;
}
/// <summary>
/// 返回给定的颜色的ARGB的分量差值的颜色
/// </summary>
/// <param name="colorBase"></param>
/// <param name="a">A</param>
/// <param name="r">R</param>
/// <param name="g">G</param>
/// <param name="b">B</param>
/// <returns></returns>
public static Color GetColor(Color colorBase, int a, int r, int g, int b)
{
int a0 = colorBase.A;
int r0 = colorBase.R;
int g0 = colorBase.G;
int b0 = colorBase.B;
if (a a0 > 255) { a = 255; } else { a = Math.Max(a a0, 0); }
if (r r0 > 255) { r = 255; } else { r = Math.Max(r r0, 0); }
if (g g0 > 255) { g = 255; } else { g = Math.Max(g g0, 0); }
if (b b0 > 255) { b = 255; } else { b = Math.Max(b b0, 0); }
return Color.FromArgb(a, r, g, b);
}
/// <summary>
/// 绘制窗体主体部分白色透明层
/// </summary>
/// <param name="form"></param>
/// <param name="g"></param>
public static void DrawFromAlphaMainPart(Form form, Graphics g)
{
Color[] colors =
{
Color.FromArgb(5, Color.White),
Color.FromArgb(30, Color.White),
Color.FromArgb(145, Color.White),
Color.FromArgb(150, Color.White),
Color.FromArgb(30, Color.White),
Color.FromArgb(5, Color.White)
};
float[] pos =
{
0.0f,
0.04f,
0.10f,
0.90f,
0.97f,
1.0f
};
ColorBlend colorBlend = new ColorBlend(6);
colorBlend.Colors = colors;
colorBlend.Positions = pos;
RectangleF destRect = new RectangleF(0, 0, form.Width, form.Height);
using (LinearGradientBrush lBrush = new LinearGradientBrush(destRect, colors[0], colors[5], LinearGradientMode.Vertical))
{
lBrush.InterpolationColors = colorBlend;
g.FillRectangle(lBrush, destRect);
}
}
}
}
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