Winform的窗体美化心酸路
我想做一位狂热的程序猿粪子！
其实一直都很想做点什么，工作原因林林种种导致停止了前进的脚步。
有时会为自己的一个目标狂热，但经常发觉激情过后更多的总是为自己找借口！
最近感觉奔三将近。逐有感而发，不能再这样下去了。
即拿出以前自己为那狂热好一阵的东西继续下去。
一直想为自己开发一套控件库，但感觉精力确实有限，也没那么多时间，逐渐浇灭了这样的织热。
这是套窗体皮肤，断断续续所花费的时间也不少。
下面我介绍下我的这套皮肤，其实也算不上一套，只算是个开始吧。
有人可能会想这不就是边框隐藏再绘制客户区么，这是目前大部人会选择的方案。但我这是连同客户区和边框一同绘的效果。
这种实现方式难度大些，更关键的是比较耗时，加之当时对有些消息的不了解，在一些问题上花费了大量的时间。
废话不多说帖代码
protected virtual void OnNcPaint(PaintEventArgs e)
{
Graphics dc = e.Graphics;
dc.PageUnit = GraphicsUnit.Pixel; Rectangle iconArea = new Rectangle(, , this.Icon.Width, this.Icon.Height);
if (this.ShowIcon && iconArea.IntersectsWith(e.ClipRectangle))
dc.DrawIcon(this.Icon, new Rectangle(, , this.IconSize.Width, this.IconSize.Height)); Rectangle textArea = this.CaptionArea;
if (textArea.IntersectsWith(e.ClipRectangle))
{
StringFormat strFmt = new StringFormat();
switch (this.CaptionAlign)
{
case ContentAlignment.TopLeft:
strFmt.Alignment = StringAlignment.Near;
strFmt.LineAlignment = StringAlignment.Near;
if (this.ShowIcon) textArea.X += this.IconSize.Width;
textArea.X += this.CaptionOffset.X;
textArea.Y += this.captionOffset.Y;
break;
case ContentAlignment.TopCenter:
strFmt.Alignment = StringAlignment.Center;
strFmt.LineAlignment = StringAlignment.Near;
break;
case ContentAlignment.TopRight:
strFmt.Alignment = StringAlignment.Far;
strFmt.LineAlignment = StringAlignment.Near;
textArea.Width = this.CaptionButtonOffset;
textArea.Width -= this.CaptionOffset.X;
textArea.Height -= this.CaptionOffset.Y;
break;
case ContentAlignment.MiddleLeft:
strFmt.Alignment = StringAlignment.Near;
strFmt.LineAlignment = StringAlignment.Center;
if (this.ShowIcon) textArea.X += this.IconSize.Width;
textArea.X += this.CaptionOffset.X;
textArea.Y += this.captionOffset.Y;
break;
case ContentAlignment.MiddleCenter:
strFmt.Alignment = StringAlignment.Center;
strFmt.LineAlignment = StringAlignment.Center;
break;
case ContentAlignment.MiddleRight:
strFmt.Alignment = StringAlignment.Far;
strFmt.LineAlignment = StringAlignment.Center;
textArea.Width = this.CaptionButtonOffset;
break;
case ContentAlignment.BottomLeft:
strFmt.Alignment = StringAlignment.Near;
strFmt.LineAlignment = StringAlignment.Far;
if (this.ShowIcon) textArea.X += this.IconSize.Width;
textArea.X += this.CaptionOffset.X;
textArea.Y += this.captionOffset.Y;
break;
case ContentAlignment.BottomCenter:
strFmt.Alignment = StringAlignment.Center;
strFmt.LineAlignment = StringAlignment.Far;
break;
case ContentAlignment.BottomRight:
strFmt.Alignment = StringAlignment.Far;
strFmt.LineAlignment = StringAlignment.Far;
textArea.Width = this.CaptionButtonOffset;
textArea.Width -= this.CaptionOffset.X;
textArea.Height -= this.CaptionOffset.Y;
break;
}
using (SolidBrush brush = new SolidBrush(this.ForeColor))
{
//dc.DrawString(this.Text, this.Font, brush, textArea, strFmt);
TextDraw.DrawWordArtEffect(dc, this.Text, this.Font, this.ForeColor, Color.Black, textArea, strFmt, WordArtEffectStyle.shadow);
}
}
} protected override void OnPaintBackground(PaintEventArgs e)
{
//透明画刷填充
if (this.backgroundPattern == null)
{
this.backgroundPattern = DrawWinBackgroundPattern();
}
e.Graphics.DrawImage(this.backgroundPattern, e.ClipRectangle,
new Rectangle(e.ClipRectangle.X, this.CaptionHeight + e.ClipRectangle.Y,
e.ClipRectangle.Width, e.ClipRectangle.Height), GraphicsUnit.Pixel);
} protected override void WndProc(ref Message m)
{
switch ((WindowsMessages)m.Msg)
{
case WindowsMessages.WM_NCCALCSIZE:
this.WmNcCalcSize(ref m);
return; case WindowsMessages.WM_NCACTIVATE:
this.WmNcActivate(ref m);
return; case WindowsMessages.WM_NCUAHDRAWCAPTION:
return;
case WindowsMessages.WM_NCUAHDRAWFRAME:
return; case WindowsMessages.WM_NCPAINT:
this.WmNcPaint(ref m);
return; case WindowsMessages.WM_NCHITTEST:
this.WmNcHitTest(ref m);
return; case WindowsMessages.WM_NCLBUTTONDBLCLK:
if (this.MaximizeBox && this.MaximumSize.IsEmpty)
base.WndProc(ref m);
return; case WindowsMessages.WM_NCLBUTTONDOWN:
this.WmNcLButtonDown(ref m);
return; case WindowsMessages.WM_NCLBUTTONUP:
this.WmNcLButtonUP(ref m);
return; case WindowsMessages.WM_NCMOUSEMOVE:
this.WmNcMouseMove(ref m);
return; case WindowsMessages.WM_NCMOUSELEAVE:
this.WmNcMouseLeave(ref m);
return; case WindowsMessages.WM_LBUTTONDOWN:
this.WmLButtonDown(ref m);
return; case WindowsMessages.WM_GETMINMAXINFO:
this.WmGetMinMaxInfo(ref m);
return; default:
base.WndProc(ref m);
return;
} }
protected virtual Image DrawWinBackgroundPattern()
{
Bitmap img = new Bitmap(this.Width, this.Height);
using (Graphics gp = Graphics.FromImage(img))
{
gp.SmoothingMode = SmoothingMode.AntiAlias;
gp.PageUnit = GraphicsUnit.Pixel;
gp.Clear(this.BackColor);
if (this.BackgroundImage == null)
{
using (LinearGradientBrush brush = new LinearGradientBrush(this.CaptionArea, ColorDraw.ColorOffset(this.BackColor, ),
Color.FromArgb(, , , ), LinearGradientMode.Vertical))
{
gp.FillRectangle(brush, this.CaptionArea);
}
}
else
{
switch (this.BackgroundImageLayout)
{
case ImageLayout.None:
{
#region None
int gradientX = Math.Min(this.BackgroundImage.Width, );
int gradientY = Math.Min(this.BackgroundImage.Height, );
gp.DrawImage(this.BackgroundImage, new Point());
Rectangle rightGradientReg = new Rectangle(this.BackgroundImage.Width - gradientX, , gradientX, this.BackgroundImage.Height);
Rectangle bottomGradientReg = new Rectangle(, this.BackgroundImage.Height - gradientY, this.BackgroundImage.Width, gradientY);
using (LinearGradientBrush hbrush = new LinearGradientBrush(rightGradientReg, Color.FromArgb(, this.BackColor), Color.FromArgb(, this.BackColor), 0F))
{
rightGradientReg.X += ;
gp.FillRectangle(hbrush, rightGradientReg);
}
using (LinearGradientBrush vbrush = new LinearGradientBrush(bottomGradientReg, Color.FromArgb(, this.BackColor), Color.FromArgb(, this.BackColor), 90F))
{
gp.FillRectangle(vbrush, bottomGradientReg);
}
#endregion
}
break;
case ImageLayout.Stretch:
{
#region Stretch
int gradientX = Math.Min(this.Width, );
int gradientY = Math.Min(this.Height, );
gp.DrawImage(this.BackgroundImage, new Rectangle(Point.Empty, this.Size),
new Rectangle(, , Math.Min(this.BackgroundImage.Width, this.Width), Math.Min(this.BackgroundImage.Height, this.Height)), GraphicsUnit.Pixel);
Rectangle rightGradientReg = new Rectangle(this.Width - gradientX, , gradientX, this.Height);
Rectangle bottomGradientReg = new Rectangle(, this.Height - gradientY, this.Width, gradientY);
Color rightside = BitmapDraw.GetBitmapEdgeColor(this.BackgroundImage, BorderSide.Right);
Color bottomside = BitmapDraw.GetBitmapEdgeColor(this.BackgroundImage, BorderSide.Bottom);
using (LinearGradientBrush hbrush = new LinearGradientBrush(rightGradientReg, Color.FromArgb(, rightside), Color.FromArgb(, rightside), 0F))
{
rightGradientReg.X += ;
gp.FillRectangle(hbrush, rightGradientReg);
}
using (LinearGradientBrush vbrush = new LinearGradientBrush(bottomGradientReg, Color.FromArgb(, bottomside), Color.FromArgb(, bottomside), 90F))
{
gp.FillRectangle(vbrush, bottomGradientReg);
}
#endregion
}
break;
case ImageLayout.Tile:
{
#region Tile
gp.DrawImage(this.BackgroundImage, new Rectangle(Point.Empty, this.Size),
new Rectangle(Point.Empty, this.BackgroundImage.Size), GraphicsUnit.Pixel);
#endregion
}
break;
case ImageLayout.Center:
{
#region Center
Rectangle targetRect = new Rectangle(Point.Empty, this.Size);
Rectangle desRect = new Rectangle(Point.Empty, this.BackgroundImage.Size);
if (this.Width > this.BackgroundImage.Width)
{
targetRect.X = (this.Width - this.BackgroundImage.Width) / ;
targetRect.Width = this.BackgroundImage.Width;
}
else if (this.Width < this.BackgroundImage.Width)
{
desRect.X = (this.BackgroundImage.Width - this.Width) / ;
desRect.Width = this.Width;
}
if (this.Height > this.BackgroundImage.Height)
{
targetRect.Y = (this.Height - this.BackgroundImage.Height) / ;
targetRect.Height = this.BackgroundImage.Height;
}
else if (this.Height < this.BackgroundImage.Height)
{
desRect.Y = (this.BackgroundImage.Height - this.Height) / ;
desRect.Height = this.Height;
}
gp.DrawImage(this.BackgroundImage, targetRect, desRect, GraphicsUnit.Pixel);
int gradientW = Math.Min(this.BackgroundImage.Width, );
int gradientH = Math.Min(this.BackgroundImage.Height, );
Rectangle leftGradientReg = new Rectangle(targetRect.X - , targetRect.Y, gradientW, targetRect.Height);
Rectangle topGradientReg = new Rectangle(targetRect.X, targetRect.Y, targetRect.Width, gradientH);
Rectangle rightGradientReg = new Rectangle(targetRect.Width - gradientW + targetRect.X, targetRect.Y, gradientW, targetRect.Height);
Rectangle bottomGradientReg = new Rectangle(targetRect.X, targetRect.Height - gradientH + targetRect.Y, targetRect.Width, gradientH);
using (LinearGradientBrush lhbrush = new LinearGradientBrush(leftGradientReg, Color.FromArgb(, this.BackColor), Color.FromArgb(, this.BackColor), 0F))
{
gp.FillRectangle(lhbrush, leftGradientReg);
}
using (LinearGradientBrush rhbrush = new LinearGradientBrush(rightGradientReg, Color.FromArgb(, this.BackColor), Color.FromArgb(, this.BackColor), 0F))
{
rightGradientReg.X++;
gp.FillRectangle(rhbrush, rightGradientReg);
}
using (LinearGradientBrush tvbrush = new LinearGradientBrush(topGradientReg, Color.FromArgb(, this.BackColor), Color.FromArgb(, this.BackColor), 90F))
{
topGradientReg.Y--;
gp.FillRectangle(tvbrush, topGradientReg);
}
using (LinearGradientBrush bvbrush = new LinearGradientBrush(bottomGradientReg, Color.FromArgb(, this.BackColor), Color.FromArgb(, this.BackColor), 90F))
{
gp.FillRectangle(bvbrush, bottomGradientReg);
}
#endregion
}
break;
case ImageLayout.Zoom:
{
#region Zoom
gp.DrawImage(this.BackgroundImage, Point.Empty);
Rectangle winRound = new Rectangle(Point.Empty, this.Size);
using (LinearGradientBrush brush = new LinearGradientBrush(winRound, Color.FromArgb(, this.BackColor),
Color.FromArgb(, this.BackColor), LinearGradientMode.Vertical))
{
gp.FillRectangle(brush, winRound);
}
#endregion
}
break;
default:
{
gp.DrawImage(this.BackgroundImage,
new Rectangle(, , this.Size.Width, this.Size.Height),
new Rectangle(, , this.BackgroundImage.Width, this.BackgroundImage.Height), GraphicsUnit.Pixel);
}
break;
}
}
//绘制设计器时标题栏分界线
if (this.DesignMode && this.CaptionHeight > )
{
using (Pen pen = new Pen(Color.FromArgb(, , )))
gp.DrawLine(pen, , this.CaptionHeight - , this.Width - , this.CaptionHeight - );
}
//绘制边框
if (this.BorderWidth > )
{
using (Pen pen = new Pen(Color.FromArgb(, Color.Black), this.BorderWidth))
{
Rectangle outborderline = Rectangle.FromLTRB(, , this.Size.Width - , this.Size.Height - );
gp.DrawPath(pen, VectorDraw.CreateRoundRect(outborderline, this.CircularBeadRadius, BorderSide.None));
}
}
if (this.BorderLightWidth > )
{
using (Pen pen = new Pen(Color.FromArgb(, Color.White), this.BorderLightWidth))
{
Rectangle inborderline = Rectangle.FromLTRB(this.BorderWidth, this.BorderWidth, this.Size.Width - this.BorderWidth * , this.Size.Height - this.BorderWidth * );
gp.DrawPath(pen, VectorDraw.CreateRoundRect(inborderline, this.CircularBeadRadius, BorderSide.None));
}
} if (this.NCPaint != null)
this.NCPaint.Invoke(new PaintEventArgs(gp, this.ClipNcRectangle));
}
return img;
}
重绘非客户区，大家可能注意到上面的代码
case WindowsMessages.WM_NCUAHDRAWCAPTION:
return;
case WindowsMessages.WM_NCUAHDRAWFRAME:
return;
此处消息什么也不处理，也许是历史年代原因，上述消息是响应win98的机制，窗体非客户区的重绘会导致头部出现黑色块，我们将之屏蔽即可。
PS：当时的我可在这坑了很长时间。
大家都知道，其实winform最大的瓶颈就是性能！
但是导致重绘的原因很多，如，鼠标移动，窗体移动，大小改变等以及还有我们的主观控制。
所以我们应当尽可能的减少重绘次，以及增加局部重绘的条件。
头次写博客，没什么语言组织表达力，这篇博文会慢慢更新，请大家关注！
欢迎加入我的QQ群：56465289（C#技术交流群）
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