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180 lines
No EOL
6.3 KiB
C#
180 lines
No EOL
6.3 KiB
C#
#region License Information (GPL v3)
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/*
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ShareX - A program that allows you to take screenshots and share any file type
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Copyright (c) 2007-2018 ShareX Team
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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Optionally you can also view the license at <http://www.gnu.org/licenses/>.
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*/
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#endregion License Information (GPL v3)
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using System;
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using System.Drawing;
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using System.Drawing.Drawing2D;
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using System.Reflection;
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using System.Runtime.InteropServices;
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namespace ShareX.HelpersLib
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{
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public static class GraphicsPathExtensions
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{
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public static void AddRectangleProper(this GraphicsPath graphicsPath, RectangleF rect, float penWidth = 1)
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{
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if (penWidth == 1)
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{
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rect = new RectangleF(rect.X, rect.Y, rect.Width - 1, rect.Height - 1);
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}
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if (rect.Width > 0 && rect.Height > 0)
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{
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graphicsPath.AddRectangle(rect);
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}
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}
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public static void AddRoundedRectangleProper(this GraphicsPath graphicsPath, RectangleF rect, float radius, float penWidth = 1)
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{
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if (penWidth == 1)
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{
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rect = new RectangleF(rect.X, rect.Y, rect.Width - 1, rect.Height - 1);
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}
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if (rect.Width > 0 && rect.Height > 0)
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{
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graphicsPath.AddRoundedRectangle(rect, radius);
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}
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}
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public static void AddRoundedRectangle(this GraphicsPath gp, RectangleF rect, float radius)
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{
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if (radius <= 0f)
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{
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gp.AddRectangle(rect);
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}
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else
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{
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// If the corner radius is greater than or equal to
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// half the width, or height (whichever is shorter)
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// then return a capsule instead of a lozenge
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if (radius >= (Math.Min(rect.Width, rect.Height) / 2.0f))
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{
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gp.AddCapsule(rect);
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}
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else
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{
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// Create the arc for the rectangle sides and declare
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// a graphics path object for the drawing
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float diameter = radius * 2.0f;
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SizeF size = new SizeF(diameter, diameter);
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RectangleF arc = new RectangleF(rect.Location, size);
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// Top left arc
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gp.AddArc(arc, 180, 90);
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// Top right arc
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arc.X = rect.Right - diameter;
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gp.AddArc(arc, 270, 90);
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// Bottom right arc
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arc.Y = rect.Bottom - diameter;
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gp.AddArc(arc, 0, 90);
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// Bottom left arc
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arc.X = rect.Left;
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gp.AddArc(arc, 90, 90);
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gp.CloseFigure();
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}
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}
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}
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public static void AddCapsule(this GraphicsPath gp, RectangleF rect)
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{
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float diameter;
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RectangleF arc;
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try
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{
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if (rect.Width > rect.Height)
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{
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// Horizontal capsule
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diameter = rect.Height;
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SizeF sizeF = new SizeF(diameter, diameter);
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arc = new RectangleF(rect.Location, sizeF);
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gp.AddArc(arc, 90, 180);
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arc.X = rect.Right - diameter;
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gp.AddArc(arc, 270, 180);
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}
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else if (rect.Width < rect.Height)
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{
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// Vertical capsule
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diameter = rect.Width;
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SizeF sizeF = new SizeF(diameter, diameter);
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arc = new RectangleF(rect.Location, sizeF);
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gp.AddArc(arc, 180, 180);
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arc.Y = rect.Bottom - diameter;
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gp.AddArc(arc, 0, 180);
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}
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else
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{
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// Circle
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gp.AddEllipse(rect);
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}
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}
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catch
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{
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gp.AddEllipse(rect);
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}
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gp.CloseFigure();
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}
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public static void AddDiamond(this GraphicsPath graphicsPath, RectangleF rect)
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{
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PointF p1 = new PointF(rect.X + rect.Width / 2.0f, rect.Y);
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PointF p2 = new PointF(rect.X + rect.Width, rect.Y + rect.Height / 2.0f);
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PointF p3 = new PointF(rect.X + rect.Width / 2.0f, rect.Y + rect.Height);
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PointF p4 = new PointF(rect.X, rect.Y + rect.Height / 2.0f);
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graphicsPath.AddPolygon(new PointF[] { p1, p2, p3, p4 });
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}
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public static void AddPolygon(this GraphicsPath graphicsPath, RectangleF rect, int sideCount)
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{
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PointF[] points = new PointF[sideCount];
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float a = 0;
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for (int i = 0; i < sideCount; i++)
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{
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points[i] = new PointF(rect.X + ((rect.Width / 2.0f) * (float)Math.Cos(a)) + rect.Width / 2.0f,
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rect.Y + ((rect.Height / 2.0f) * (float)Math.Sin(a)) + rect.Height / 2.0f);
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a += (float)Math.PI * 2.0f / sideCount;
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}
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graphicsPath.AddPolygon(points);
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}
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public static void WindingModeOutline(this GraphicsPath graphicsPath)
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{
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IntPtr handle = (IntPtr)graphicsPath.GetType().GetField("nativePath", BindingFlags.NonPublic | BindingFlags.Instance).GetValue(graphicsPath);
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HandleRef path = new HandleRef(graphicsPath, handle);
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NativeMethods.GdipWindingModeOutline(path, IntPtr.Zero, 0.25F);
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}
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}
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} |