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！

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