/// <summary>
/// 绘制进度条
/// </summary>
/// <param name="g">画板</param>
/// <param name="rect">需要绘制的矩形区域</param>
/// <param name="backgroundColor">进度条的背景颜色</param>
/// <param name="borderColor">边框颜色</param>
/// <param name="innerBorderColor">内边框颜色</param>
/// <param name="roundStyle">绘制圆角的样式</param>
/// <param name="roundWidth">圆角宽度</param>
/// <param name="alphaPosition">透明度位置</param>
/// <param name="drawBorder">是否绘制边框</param>
/// <param name="drawGlass">是否绘制进度传输的颜色</param>
/// <param name="mode">指定渐变颜色的方向</param>
public static void RenderProgressBarBackground(Graphics g, Rectangle rect, Color backgroundColor, Color borderColor, ERoundStyle roundStyle, int roundWidth, float alphaPosition, bool drawBorder, bool drawGlass, LinearGradientMode mode)
{
if (drawBorder)
{
rect.Width--;
rect.Height--;
}
if (rect.Width <= 0 || rect.Height <= 0)
{
return;
}
using (LinearGradientBrush brush = new LinearGradientBrush(rect, Color.Transparent, Color.Transparent, mode))
{
Color[] colors = new Color[4];
colors[0] = ColorHelper.GetColor(backgroundColor, 0, 35, 24, 9);
colors[1] = ColorHelper.GetColor(backgroundColor, 0, 13, 8, 3);
colors[2] = backgroundColor;
colors[3] = ColorHelper.GetColor(backgroundColor, 0, 68, 69, 54);
ColorBlend blend = new ColorBlend();
blend.Positions = new float[] { 0.0f, alphaPosition, alphaPosition + 0.05f, 1.0f };
blend.Colors = colors;
brush.InterpolationColors = blend;
if (roundStyle != ERoundStyle.None)
{
using (GraphicsPath path = GraphicsPathHelper.CreatePath(rect, roundWidth, roundStyle, false))
{
g.FillPath(brush, path);
}
if (drawBorder)
{
using (GraphicsPath path = GraphicsPathHelper.CreatePath(rect, roundWidth, roundStyle, false))
{
using (Pen pen = new Pen(borderColor))
{
g.DrawPath(pen, path);
}
}
}
}
else
{
g.FillRectangle(brush, rect);
if (backgroundColor.A > 80)
{
Rectangle rectTop = rect;
if (mode == LinearGradientMode.Vertical)
{
rectTop.Height = (int)(rectTop.Height * alphaPosition);
}
else
{
rectTop.Width = (int)(rect.Width * alphaPosition);
}
using (SolidBrush brushAlpha = new SolidBrush(Color.FromArgb(80, 255, 255, 255)))
{
g.FillRectangle(brushAlpha, rectTop);
}
}
if (drawGlass)
{
RectangleF glassRect = rect;
if (mode == LinearGradientMode.Vertical)
{
glassRect.Y = rect.Y + rect.Height * alphaPosition;
glassRect.Height = (rect.Height - rect.Height * alphaPosition) * 2;
}
else
{
glassRect.X = rect.X + rect.Width * alphaPosition;
glassRect.Width = (rect.Width - rect.Width * alphaPosition) * 2;
}
DrawGlass(g, glassRect, 200, 0);
}
if (drawBorder)
{
using (Pen pen = new Pen(borderColor))
{
g.DrawRectangle(pen, rect);
}
}
}
}
}
public static GraphicsPath CreatePath(Rectangle rect, int radius, ERoundStyle style, bool correction)
{
GraphicsPath path = new GraphicsPath();
int num = correction ? 1 : 0;
switch (style)
{
case ERoundStyle.None:
path.AddRectangle(rect);
break;
case ERoundStyle.TopLeft:
path.AddArc(rect.X, rect.Y, radius, radius, 180f, 90f);
path.AddLine(rect.Right - num, rect.Y, rect.Right - num, rect.Bottom - num);
path.AddLine(rect.Right - num, rect.Bottom - num, rect.X, rect.Bottom - num);
break;
case ERoundStyle.TopRight:
path.AddArc((rect.Right - radius) - num, rect.Y, radius, radius, 270f, 90f);
path.AddLine(rect.Right - num, rect.Bottom - num, rect.X, rect.Bottom - num);
path.AddLine(rect.X, rect.Bottom - num, rect.X, rect.Y);
break;
case ERoundStyle.Top:
path.AddArc(rect.X, rect.Y, radius, radius, 180f, 90f);
path.AddArc((rect.Right - radius) - num, rect.Y, radius, radius, 270f, 90f);
path.AddLine(rect.Right - num, rect.Bottom - num, rect.X, rect.Bottom - num);
break;
case ERoundStyle.BottomLeft:
path.AddArc(rect.X, (rect.Bottom - radius) - num, radius, radius, 90f, 90f);
path.AddLine(rect.X, rect.Y, rect.Right - num, rect.Y);
path.AddLine(rect.Right - num, rect.Y, rect.Right - num, rect.Bottom - num);
break;
case ERoundStyle.Left:
path.AddArc(rect.X, rect.Y, radius, radius, 180f, 90f);
path.AddLine(rect.Right - num, rect.Y, rect.Right - num, rect.Bottom - num);
path.AddArc(rect.X, (rect.Bottom - radius) - num, radius, radius, 90f, 90f);
break;
case ERoundStyle.BottomRight:
path.AddArc((rect.Right - radius) - num, (rect.Bottom - radius) - num, radius, radius, 0f, 90f);
path.AddLine(rect.X, rect.Bottom - num, rect.X, rect.Y);
path.AddLine(rect.X, rect.Y, rect.Right - num, rect.Y);
break;
case ERoundStyle.Right:
path.AddArc((rect.Right - radius) - num, rect.Y, radius, radius, 270f, 90f);
path.AddArc((rect.Right - radius) - num, (rect.Bottom - radius) - num, radius, radius, 0f, 90f);
path.AddLine(rect.X, rect.Bottom - num, rect.X, rect.Y);
break;
case ERoundStyle.Bottom:
path.AddArc((rect.Right - radius) - num, (rect.Bottom - radius) - num, radius, radius, 0f, 90f);
path.AddArc(rect.X, (rect.Bottom - radius) - num, radius, radius, 90f, 90f);
path.AddLine(rect.X, rect.Y, rect.Right - num, rect.Y);
break;
case ERoundStyle.All:
path.AddArc(rect.X, rect.Y, radius, radius, 180f, 90f);
path.AddArc((rect.Right - radius) - num, rect.Y, radius, radius, 270f, 90f);
path.AddArc((rect.Right - radius) - num, (rect.Bottom - radius) - num, radius, radius, 0f, 90f);
path.AddArc(rect.X, (rect.Bottom - radius) - num, radius, radius, 90f, 90f);
break;
}
path.CloseFigure();
return(path);
}
