/// <summary>
/// 绘制标题区按钮
/// </summary>
/// <param name="g"></param>
/// <param name="sizeInfo"></param>
private void DrawControlBox(Graphics g, NonClientSizeInfo sizeInfo)
{
g.DrawImage(CloseButtonImage, sizeInfo.CloseBtnRect);
g.DrawImage(MinimumButtonImage, sizeInfo.MinimumBtnRect);
// 当前用户名不为空时，才显示用户名与用户图标
if (!string.IsNullOrEmpty(UserName))
{
SizeF nameSize = g.MeasureString(UserName, BtnFont);
Rectangle nameRect = new Rectangle((int)(sizeInfo.UserNameImageRect.X - nameSize.Width),
sizeInfo.UserNameImageRect.Y, (int)Math.Ceiling(sizeInfo.UserNameImageRect.Width + nameSize.Width) + 2,
sizeInfo.UserNameImageRect.Height);
StringFormat format = new StringFormat();
format.Alignment = StringAlignment.Near;
format.LineAlignment = StringAlignment.Center;
g.FillRectangle(BtnBackBrush, nameRect);
g.DrawString(UserName, BtnFont, BtnForeBrush, nameRect, format);
g.DrawImage(UserNameImage, sizeInfo.UserNameImageRect);
}
}
/// <summary>
/// 获取非客户区窗体信息
/// </summary>
/// <param name="hwnd"></param>
/// <returns></returns>
private NonClientSizeInfo GetNonClientInfo(IntPtr hwnd)
{
NonClientSizeInfo info = new NonClientSizeInfo();
info.BorderSize = BorderSize;
info.CaptionHeight = CaptionHeight;
_RECT areatRect = new _RECT();
GetWindowRect(hwnd, ref areatRect);
int width = areatRect.right - areatRect.left;
int height = areatRect.bottom - areatRect.top;
info.Width = width;
info.Height = height;
Point xy = new Point(areatRect.left, areatRect.top);
xy.Offset(-areatRect.left, -areatRect.top);
info.CaptionRect = new Rectangle(xy.X, xy.Y
, width, info.CaptionHeight);
info.Rect = new Rectangle(xy.X, xy.Y, width, height);
info.ClientRect = new Rectangle(xy.X + info.BorderSize.Width,
xy.Y + info.CaptionHeight + info.BorderSize.Height,
width - info.BorderSize.Width * 2,
height - info.CaptionHeight - info.BorderSize.Height * 2);
info.CloseBtnRect = new Rectangle(new Point(xy.X + width - 2 * BtnHeight, info.BorderSize.Height),
new Size(BtnHeight, BtnHeight));
info.MinimumBtnRect = new Rectangle(info.CloseBtnRect.X - BtnHeight, info.CloseBtnRect.Y, BtnHeight, BtnHeight);
info.UserNameImageRect = new Rectangle(info.MinimumBtnRect.X - 2 * BtnHeight, info.CloseBtnRect.Y, BtnHeight, BtnHeight);
return(info);
}
/// <summary>
/// 绘制标题文字
/// </summary>
/// <param name="g"></param>
/// <param name="sizeInfo"></param>
private void DrawCaptionTitle(Graphics g, NonClientSizeInfo sizeInfo)
{
g.DrawString(this.Text, TitleFont, TitleBrush, new PointF(TitleMargin, sizeInfo.CaptionRect.Y));
}
