377 lines
14 KiB
C#
377 lines
14 KiB
C#
/******************************************************************************
|
||
* SunnyUI 开源控件库、工具类库、扩展类库、多页面开发框架。
|
||
* CopyRight (C) 2012-2021 ShenYongHua(沈永华).
|
||
* QQ群：56829229 QQ：17612584 EMail：SunnyUI@QQ.Com
|
||
*
|
||
* Blog: https://www.cnblogs.com/yhuse
|
||
* Gitee: https://gitee.com/yhuse/SunnyUI
|
||
* GitHub: https://github.com/yhuse/SunnyUI
|
||
*
|
||
* SunnyUI.dll can be used for free under the GPL-3.0 license.
|
||
* If you use this code, please keep this note.
|
||
* 如果您使用此代码，请保留此说明。
|
||
******************************************************************************
|
||
* 文件名称: UGDI.cs
|
||
* 文件说明: GDI扩展类
|
||
* 当前版本: V3.0
|
||
* 创建日期: 2020-01-01
|
||
*
|
||
* 2020-01-01: V2.2.0 增加文件说明
|
||
* 2021-08-19: V3.0.6 修复CreateRoundedRectanglePath参数radius=0时的错误
|
||
* 2021-08-20: V3.0.6 整理了一些GDI绘图的常用方法扩展
|
||
******************************************************************************/
|
||
|
||
using System;
|
||
using System.Drawing;
|
||
using System.Drawing.Drawing2D;
|
||
|
||
namespace Sunny.UI
|
||
{
|
||
public static class GDI
|
||
{
|
||
/// <summary>
|
||
/// 点是否在区域内
|
||
/// </summary>
|
||
/// <param name="point">点</param>
|
||
/// <param name="region">区域范围</param>
|
||
/// <returns>是否在区域内</returns>
|
||
public static bool InRegion(this Point point, Region region)
|
||
{
|
||
return region.IsVisible(point);
|
||
}
|
||
|
||
/// <summary>
|
||
/// 点是否在区域内
|
||
/// </summary>
|
||
/// <param name="point">点</param>
|
||
/// <param name="points">区域范围</param>
|
||
/// <returns>是否在区域内</returns>
|
||
public static bool InRegion(this Point point, Point[] points)
|
||
{
|
||
using (GraphicsPath path = points.Path())
|
||
{
|
||
using (Region region = path.Region())
|
||
{
|
||
return region.IsVisible(point);
|
||
}
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 点是否在区域内
|
||
/// </summary>
|
||
/// <param name="point">点</param>
|
||
/// <param name="points">区域范围</param>
|
||
/// <returns>是否在区域内</returns>
|
||
public static bool InRegion(this PointF point, PointF[] points)
|
||
{
|
||
using (GraphicsPath path = points.Path())
|
||
{
|
||
using (Region region = path.Region())
|
||
{
|
||
return region.IsVisible(point);
|
||
}
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 创建路径
|
||
/// </summary>
|
||
/// <param name="points">点集合</param>
|
||
/// <returns>路径</returns>
|
||
public static GraphicsPath Path(this Point[] points)
|
||
{
|
||
GraphicsPath path = new GraphicsPath();
|
||
path.Reset();
|
||
path.AddPolygon(points);
|
||
return path;
|
||
}
|
||
|
||
/// <summary>
|
||
/// 创建路径
|
||
/// </summary>
|
||
/// <param name="points">点集合</param>
|
||
/// <returns>路径</returns>
|
||
public static GraphicsPath Path(this PointF[] points)
|
||
{
|
||
GraphicsPath path = new GraphicsPath();
|
||
path.Reset();
|
||
path.AddPolygon(points);
|
||
return path;
|
||
}
|
||
|
||
/// <summary>
|
||
/// 创建区域
|
||
/// </summary>
|
||
/// <param name="path">路径</param>
|
||
/// <returns>区域</returns>
|
||
public static Region Region(this GraphicsPath path)
|
||
{
|
||
Region region = new Region();
|
||
region.MakeEmpty();
|
||
region.Union(path);
|
||
return region;
|
||
}
|
||
|
||
public static Color Alpha(this Color color, int alpha)
|
||
{
|
||
alpha = Math.Max(0, alpha);
|
||
alpha = Math.Min(255, alpha);
|
||
return Color.FromArgb(alpha, color);
|
||
}
|
||
|
||
private static Graphics TempGraphics;
|
||
|
||
/// <summary>
|
||
/// 提供一个Graphics，常用于需要计算文字大小时
|
||
/// </summary>
|
||
/// <returns>大小</returns>
|
||
public static Graphics Graphics()
|
||
{
|
||
if (TempGraphics == null)
|
||
{
|
||
Bitmap bmp = new Bitmap(1, 1);
|
||
TempGraphics = bmp.Graphics();
|
||
}
|
||
|
||
return TempGraphics;
|
||
}
|
||
|
||
/// <summary>
|
||
/// 计算文字大小
|
||
/// </summary>
|
||
/// <param name="text">文字</param>
|
||
/// <param name="font">字体</param>
|
||
/// <returns>大小</returns>
|
||
public static SizeF MeasureString(this string text, Font font)
|
||
{
|
||
return Graphics().MeasureString(text, font);
|
||
}
|
||
|
||
public static Color[] GradientColors(this Color startColor, Color endColor, int count)
|
||
{
|
||
count = Math.Max(count, 2);
|
||
Bitmap image = new Bitmap(1024, 3);
|
||
Graphics g = image.Graphics();
|
||
Brush br = new LinearGradientBrush(image.Bounds(), startColor, endColor, 0.0F);
|
||
g.FillRectangle(br, image.Bounds());
|
||
br.Dispose();
|
||
g.Dispose();
|
||
|
||
Color[] colors = new Color[count];
|
||
colors[0] = startColor;
|
||
colors[count - 1] = endColor;
|
||
|
||
if (count > 2)
|
||
{
|
||
FastBitmap fb = new FastBitmap(image);
|
||
fb.Lock();
|
||
for (int i = 1; i < count - 1; i++)
|
||
{
|
||
colors[i] = fb.GetPixel(image.Width * i / (count - 1), 1);
|
||
}
|
||
|
||
fb.Unlock();
|
||
fb.Dispose();
|
||
}
|
||
|
||
image.Dispose();
|
||
return colors;
|
||
}
|
||
|
||
public static void Smooth(this Graphics g, bool smooth = true)
|
||
{
|
||
if (smooth)
|
||
{
|
||
g.SetHighQuality();
|
||
}
|
||
else
|
||
{
|
||
g.SetDefaultQuality();
|
||
}
|
||
}
|
||
|
||
|
||
public static GraphicsPath CreateRoundedRectanglePath(this Graphics g, Rectangle rect, int radius, UICornerRadiusSides radiusSides)
|
||
{
|
||
return rect.CreateRoundedRectanglePath(radius, radiusSides);
|
||
}
|
||
|
||
public static GraphicsPath CreateRoundedRectanglePath(this Graphics g, Rectangle rect, int radius, bool cornerLeftTop = true, bool cornerRightTop = true, bool cornerRightBottom = true, bool cornerLeftBottom = true)
|
||
{
|
||
return rect.CreateRoundedRectanglePath(radius, cornerLeftTop, cornerRightTop, cornerRightBottom, cornerLeftBottom);
|
||
}
|
||
|
||
public static GraphicsPath CreateRoundedRectanglePath(this Rectangle rect, int radius, UICornerRadiusSides radiusSides)
|
||
{
|
||
GraphicsPath path;
|
||
|
||
if (radiusSides == UICornerRadiusSides.None || radius == 0)
|
||
{
|
||
path = rect.GraphicsPath();
|
||
}
|
||
else
|
||
{
|
||
//IsRadius为True时，显示左上圆角
|
||
bool RadiusLeftTop = radiusSides.GetValue(UICornerRadiusSides.LeftTop);
|
||
//IsRadius为True时，显示左下圆角
|
||
bool RadiusLeftBottom = radiusSides.GetValue(UICornerRadiusSides.LeftBottom);
|
||
//IsRadius为True时，显示右上圆角
|
||
bool RadiusRightTop = radiusSides.GetValue(UICornerRadiusSides.RightTop);
|
||
//IsRadius为True时，显示右下圆角
|
||
bool RadiusRightBottom = radiusSides.GetValue(UICornerRadiusSides.RightBottom);
|
||
path = rect.CreateRoundedRectanglePath(radius, RadiusLeftTop, RadiusRightTop, RadiusRightBottom, RadiusLeftBottom);
|
||
}
|
||
|
||
return path;
|
||
}
|
||
|
||
public static GraphicsPath GraphicsPath(this Rectangle rect)
|
||
{
|
||
Point[] points = new Point[] {
|
||
new Point(rect.Left, rect.Top),
|
||
new Point(rect.Right, rect.Top),
|
||
new Point(rect.Right, rect.Bottom),
|
||
new Point(rect.Left, rect.Bottom),
|
||
new Point(rect.Left, rect.Top) };
|
||
return points.Path();
|
||
}
|
||
|
||
public static GraphicsPath CreateFanPath(this Graphics g, Point center, float d1, float d2, float startAngle, float sweepAngle)
|
||
{
|
||
return center.CreateFanPath(d1, d2, startAngle, sweepAngle);
|
||
}
|
||
|
||
public static GraphicsPath CreateFanPath(this Graphics g, PointF center, float d1, float d2, float startAngle, float sweepAngle)
|
||
{
|
||
return center.CreateFanPath(d1, d2, startAngle, sweepAngle);
|
||
}
|
||
|
||
public static GraphicsPath CreateFanPath(this Point center, float d1, float d2, float startAngle, float sweepAngle)
|
||
{
|
||
return new PointF(center.X, center.Y).CreateFanPath(d1, d2, startAngle, sweepAngle);
|
||
}
|
||
|
||
public static GraphicsPath CreateFanPath(this PointF center, float d1, float d2, float startAngle, float sweepAngle)
|
||
{
|
||
GraphicsPath path = new GraphicsPath();
|
||
path.AddArc(center.X - d1, center.Y - d1, d1 * 2, d1 * 2, startAngle, sweepAngle);
|
||
path.AddArc(center.X - d2, center.Y - d2, d2 * 2, d2 * 2, startAngle + sweepAngle, -sweepAngle);
|
||
path.AddArc(center.X - d1, center.Y - d1, d1 * 2, d1 * 2, startAngle, 0.1f);
|
||
return path;
|
||
}
|
||
|
||
public static GraphicsPath CreateRoundedRectanglePath(this Rectangle rect, int radius, bool cornerLeftTop = true, bool cornerRightTop = true, bool cornerRightBottom = true, bool cornerLeftBottom = true)
|
||
{
|
||
GraphicsPath path = new GraphicsPath();
|
||
|
||
if ((!cornerLeftTop && !cornerRightTop && !cornerRightBottom && !cornerLeftBottom) || radius <= 0)
|
||
{
|
||
path = rect.GraphicsPath();
|
||
}
|
||
else
|
||
{
|
||
if (cornerLeftTop)
|
||
path.AddArc(rect.X, rect.Y, radius, radius, 180, 90);
|
||
else
|
||
path.AddLine(new Point(rect.X, rect.Y + 1), new Point(rect.X, rect.Y));
|
||
|
||
if (cornerRightTop)
|
||
path.AddArc(rect.X + rect.Width - radius, rect.Y, radius, radius, 270, 90);
|
||
else
|
||
path.AddLine(new Point(rect.X + rect.Width - 1, rect.Y), new Point(rect.X + rect.Width, rect.Y));
|
||
|
||
if (cornerRightBottom)
|
||
path.AddArc(rect.X + rect.Width - radius, rect.Y + rect.Height - radius, radius, radius, 0, 90);
|
||
else
|
||
path.AddLine(new Point(rect.X + rect.Width, rect.Y + rect.Height), new Point(rect.X + rect.Width, rect.Y + rect.Height));
|
||
|
||
if (cornerLeftBottom)
|
||
path.AddArc(rect.X, rect.Bottom - radius, radius, radius, 90, 90);
|
||
else
|
||
path.AddLine(new Point(rect.X + 1, rect.Y + rect.Height), new Point(rect.X, rect.Y + rect.Height));
|
||
|
||
path.CloseFigure();
|
||
}
|
||
|
||
return path;
|
||
}
|
||
|
||
/// <summary>
|
||
/// 设置GDI高质量模式抗锯齿
|
||
/// </summary>
|
||
/// <param name="g"></param>
|
||
public static void SetHighQuality(this Graphics g)
|
||
{
|
||
g.SmoothingMode = SmoothingMode.AntiAlias; //使绘图质量最高，即消除锯齿
|
||
g.InterpolationMode = InterpolationMode.HighQualityBicubic;
|
||
g.CompositingQuality = CompositingQuality.HighQuality;
|
||
}
|
||
|
||
/// <summary>
|
||
/// 设置GDI默认值
|
||
/// </summary>
|
||
/// <param name="g"></param>
|
||
public static void SetDefaultQuality(this Graphics g)
|
||
{
|
||
g.SmoothingMode = SmoothingMode.Default;
|
||
g.InterpolationMode = InterpolationMode.Default;
|
||
g.CompositingQuality = CompositingQuality.Default;
|
||
}
|
||
|
||
public static string ToHTML(this Color color)
|
||
{
|
||
return ColorTranslator.ToHtml(color);
|
||
}
|
||
|
||
public static Color ToColor(this string htmlColor, int alpha = 255)
|
||
{
|
||
return Color.FromArgb(alpha > 255 ? 255 : alpha, ColorTranslator.FromHtml(htmlColor));
|
||
}
|
||
|
||
public static bool IsNullOrEmpty(this Color color)
|
||
{
|
||
return color == Color.Empty || color == Color.Transparent;
|
||
}
|
||
|
||
public static SolidBrush Brush(this Color color)
|
||
{
|
||
return new SolidBrush(color);
|
||
}
|
||
|
||
public static Pen Pen(this Color color, float size = 1)
|
||
{
|
||
return new Pen(color, size);
|
||
}
|
||
|
||
public static SolidBrush Brush(this string htmlColor, int alpha = 255)
|
||
{
|
||
return new SolidBrush(Color.FromArgb(alpha > 255 ? 255 : alpha, ColorTranslator.FromHtml(htmlColor)));
|
||
}
|
||
|
||
public static Pen Pen(this string htmlColor, int alpha = 255, float size = 1, LineCap startCap = LineCap.Custom, LineCap endCap = LineCap.Custom)
|
||
{
|
||
return new Pen(Color.FromArgb(alpha > 255 ? 255 : alpha, ColorTranslator.FromHtml(htmlColor)), size) { StartCap = startCap, EndCap = endCap };
|
||
}
|
||
|
||
public static Font ToFont(this string fontName, float size, FontStyle fontStyle = FontStyle.Regular, GraphicsUnit unit = GraphicsUnit.Pixel)
|
||
{
|
||
return new Font(fontName, size, fontStyle, unit);
|
||
}
|
||
|
||
public static Brush GlowBrush(Color centerColor, Color[] surroundColor, PointF point, GraphicsPath gp, WrapMode wrapMode = WrapMode.Clamp)
|
||
{
|
||
return new PathGradientBrush(gp) { CenterColor = centerColor, SurroundColors = surroundColor, FocusScales = point, WrapMode = wrapMode };
|
||
}
|
||
|
||
public static Brush GlowBrush(Color centerColor, Color[] surroundColor, PointF[] point, WrapMode wrapMode = WrapMode.Clamp)
|
||
{
|
||
return new PathGradientBrush(point) { CenterColor = centerColor, SurroundColors = surroundColor, WrapMode = wrapMode };
|
||
}
|
||
|
||
public static StringFormat SetAlignment(StringAlignment horizontalAlignment = StringAlignment.Center, StringAlignment verticalAlignment = StringAlignment.Center)
|
||
{
|
||
return new StringFormat { Alignment = horizontalAlignment, LineAlignment = verticalAlignment };
|
||
}
|
||
}
|
||
} |