Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / WinForms / Managed / System / WinForms / Triangle.cs / 1305376 / Triangle.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Windows.Forms { using System.Diagnostics; using System; using System.Windows.Forms; using System.Drawing; using Microsoft.Win32; ////// /// This class fully encapsulates the painting logic for a triangle. (Used by DataGrid) /// internal static class Triangle { private const double TRI_HEIGHT_RATIO = 2.5; private const double TRI_WIDTH_RATIO = 0.8; /* Commenting this overload out until someone actually needs it again... public static void Paint(Graphics g, Rectangle bounds, TriangleDirection dir, Brush backBr, Pen backPen) { Paint(g, bounds, dir, backBr, backPen, true); } */ /* Commenting this overload out until someone actually needs it again... public static void Paint(Graphics g, Rectangle bounds, TriangleDirection dir, Brush backBr, Pen backPen, bool opaque) { // build an equilateral triangle centered on the midpoint of the rect. Point[] points = BuildTrianglePoints(dir, bounds); if (opaque) g.FillPolygon(backBr, points); g.DrawPolygon(backPen, points); } */ public static void Paint(Graphics g, Rectangle bounds, TriangleDirection dir, Brush backBr, Pen backPen1, Pen backPen2, Pen backPen3, bool opaque) { // build an equilateral triangle centered on the midpoint of the rect. Point[] points = BuildTrianglePoints(dir, bounds); if (opaque) g.FillPolygon(backBr, points); g.DrawLine(backPen1, points[0], points[1]); g.DrawLine(backPen2, points[1], points[2]); g.DrawLine(backPen3, points[2], points[0]); } private static Point[] BuildTrianglePoints(TriangleDirection dir, Rectangle bounds) { Point[] points = new Point[3]; int updnWidth =(int)(bounds.Width * TRI_WIDTH_RATIO); if (updnWidth % 2 == 1) updnWidth++; int updnHeight =(int)Math.Ceiling((updnWidth/2) * TRI_HEIGHT_RATIO); int lrWidth =(int)(bounds.Height * TRI_WIDTH_RATIO); if (lrWidth % 2 == 0) lrWidth++; int lrHeight =(int)Math.Ceiling((lrWidth/2) * TRI_HEIGHT_RATIO); switch (dir) { case TriangleDirection.Up: { points[0] = new Point(0, updnHeight); points[1] = new Point(updnWidth, updnHeight); points[2] = new Point(updnWidth / 2, 0); } break; case TriangleDirection.Down: { points[0] = new Point(0, 0); points[1] = new Point(updnWidth, 0); points[2] = new Point(updnWidth / 2, updnHeight); } break; case TriangleDirection.Left: { points[0] = new Point(lrWidth, 0); points[1] = new Point(lrWidth, lrHeight); points[2] = new Point(0, lrHeight / 2); } break; case TriangleDirection.Right: { points[0] = new Point(0, 0); points[1] = new Point(0, lrHeight); points[2] = new Point(lrWidth, lrHeight / 2); } break; default: Debug.Fail("Wrong triangle enum"); break; } // we need to center our triangles into the bounds given. // NOTE: On the up/down case, the offsets are different! switch (dir) { case TriangleDirection.Up: case TriangleDirection.Down: OffsetPoints(points, bounds.X +(bounds.Width - updnHeight)/2, bounds.Y +(bounds.Height - updnWidth)/2); break; case TriangleDirection.Left: case TriangleDirection.Right: OffsetPoints(points, bounds.X +(bounds.Width - lrWidth)/2, bounds.Y +(bounds.Height - lrHeight)/2); break; } return points; } private static void OffsetPoints(Point[] points, int xOffset, int yOffset) { for (int i = 0; i < points.Length; i++) { points[i].X += xOffset; points[i].Y += yOffset; } } } ////// /// /// internal enum TriangleDirection { ///[To be supplied.] ////// /// /// Up, ///[To be supplied.] ////// /// /// Down, ///[To be supplied.] ////// /// /// Left, ///[To be supplied.] ////// /// /// Right } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.[To be supplied.] ///
Link Menu
![Network programming in C#, Network Programming in VB.NET, Network Programming in .NET](/images/book.jpg)
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- RewritingSimplifier.cs
- IChannel.cs
- ChildTable.cs
- DynamicResourceExtensionConverter.cs
- JsonReader.cs
- XslVisitor.cs
- ExecutorLocksHeldException.cs
- NetTcpSecurity.cs
- TextDpi.cs
- CodeIdentifier.cs
- QilXmlReader.cs
- StandardTransformFactory.cs
- OleDbException.cs
- XmlAnyElementAttributes.cs
- CodeDirectionExpression.cs
- SafeThemeHandle.cs
- WindowsPen.cs
- BufferedGraphicsContext.cs
- XamlSerializerUtil.cs
- SqlWebEventProvider.cs
- BamlResourceContent.cs
- SimpleTypeResolver.cs
- FormatException.cs
- SecurityTokenProvider.cs
- DocumentXmlWriter.cs
- DispatcherHooks.cs
- StorageInfo.cs
- MemberRelationshipService.cs
- TextSpan.cs
- WorkflowInstanceUnhandledExceptionRecord.cs
- GroupDescription.cs
- Fx.cs
- XmlDataFileEditor.cs
- ToolStripSplitButton.cs
- TypedTableHandler.cs
- XhtmlStyleClass.cs
- CrossAppDomainChannel.cs
- wgx_sdk_version.cs
- XmlComment.cs
- OleDbConnectionFactory.cs
- QilSortKey.cs
- LambdaCompiler.Binary.cs
- PathFigure.cs
- ServiceDescription.cs
- Psha1DerivedKeyGeneratorHelper.cs
- FontSourceCollection.cs
- TextFormattingConverter.cs
- Menu.cs
- KeyMatchBuilder.cs
- ExtentKey.cs
- FunctionCommandText.cs
- SessionEndedEventArgs.cs
- SchemaObjectWriter.cs
- CommandBinding.cs
- DesignerDataTable.cs
- ProcessHostFactoryHelper.cs
- _NegoState.cs
- Activator.cs
- _UriTypeConverter.cs
- ConfigXmlText.cs
- Int32Storage.cs
- CheckedListBox.cs
- NativeCppClassAttribute.cs
- AutoGeneratedFieldProperties.cs
- XmlNotation.cs
- PreProcessor.cs
- DecimalConverter.cs
- RequestQueue.cs
- ExpiredSecurityTokenException.cs
- NetworkInformationPermission.cs
- VersionPair.cs
- SafeNativeMethods.cs
- baseaxisquery.cs
- ChangeProcessor.cs
- ObjectItemCollection.cs
- SqlMethodTransformer.cs
- Command.cs
- Marshal.cs
- TextSelection.cs
- configsystem.cs
- ItemsPanelTemplate.cs
- SystemTcpStatistics.cs
- LinqDataSourceDisposeEventArgs.cs
- QuaternionIndependentAnimationStorage.cs
- ClientConfigPaths.cs
- PermissionSetEnumerator.cs
- NumericUpDown.cs
- XmlIlTypeHelper.cs
- MatrixAnimationBase.cs
- TableColumn.cs
- SystemResourceHost.cs
- EntityViewContainer.cs
- FontInfo.cs
- LostFocusEventManager.cs
- XmlQueryCardinality.cs
- ManifestResourceInfo.cs
- WorkflowInlining.cs
- WindowsListViewItem.cs
- ClientFormsIdentity.cs
- LoginUtil.cs