Code:
/ 4.0 / 4.0 / 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.] ///// 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
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- DummyDataSource.cs
- XmlSyndicationContent.cs
- Style.cs
- XmlSchemaSimpleContentRestriction.cs
- SemaphoreFullException.cs
- TcpClientCredentialType.cs
- ForeignKeyFactory.cs
- XPathExpr.cs
- LicenseManager.cs
- PropertyRecord.cs
- XmlNamespaceMapping.cs
- ParserContext.cs
- QueryOperationResponseOfT.cs
- _SslSessionsCache.cs
- DiffuseMaterial.cs
- RepeaterCommandEventArgs.cs
- DbParameterCollection.cs
- LinqDataSource.cs
- CalloutQueueItem.cs
- ExceptionUtil.cs
- LoadRetryConstantStrategy.cs
- SourceFilter.cs
- MatrixStack.cs
- TableStyle.cs
- DataGridCaption.cs
- InvalidWMPVersionException.cs
- DirectoryRootQuery.cs
- SqlCacheDependencyDatabase.cs
- ConditionalWeakTable.cs
- HiddenFieldPageStatePersister.cs
- TextServicesCompartment.cs
- DBCommandBuilder.cs
- LambdaExpression.cs
- InlineUIContainer.cs
- ButtonBase.cs
- SessionIDManager.cs
- HierarchicalDataBoundControl.cs
- SerializationInfo.cs
- HttpProfileBase.cs
- HttpResponseInternalWrapper.cs
- basecomparevalidator.cs
- HostProtectionException.cs
- XsltQilFactory.cs
- CornerRadius.cs
- DocumentCollection.cs
- ContextCorrelationInitializer.cs
- UriScheme.cs
- TypeDescriptionProviderAttribute.cs
- HttpProtocolReflector.cs
- WindowsAuthenticationModule.cs
- WebPartManagerInternals.cs
- KeyPressEvent.cs
- StylusCollection.cs
- TransactionScope.cs
- SpecialNameAttribute.cs
- BinaryUtilClasses.cs
- FamilyCollection.cs
- TemplateManager.cs
- StylusPointProperty.cs
- DecoratedNameAttribute.cs
- ListControlConvertEventArgs.cs
- ControlCollection.cs
- ExceptionUtil.cs
- HtmlInputCheckBox.cs
- PhoneCall.cs
- InternalResources.cs
- DiscoveryDocumentSerializer.cs
- WebPermission.cs
- ConfigurationValue.cs
- DynamicArgumentDesigner.xaml.cs
- CombinedGeometry.cs
- ModifierKeysConverter.cs
- NumberFormatInfo.cs
- ModelTreeEnumerator.cs
- AssemblyHash.cs
- VisualBrush.cs
- CachedCompositeFamily.cs
- webeventbuffer.cs
- PEFileReader.cs
- NonSerializedAttribute.cs
- MultiPageTextView.cs
- WebPartCloseVerb.cs
- RoleManagerSection.cs
- BuildProviderAppliesToAttribute.cs
- BaseHashHelper.cs
- OleDbPropertySetGuid.cs
- Lock.cs
- WorkflowInlining.cs
- JsonSerializer.cs
- SQLDouble.cs
- SourceLineInfo.cs
- ExponentialEase.cs
- LicenseProviderAttribute.cs
- ListenerElementsCollection.cs
- DataPointer.cs
- ImpersonateTokenRef.cs
- MetadataUtil.cs
- MemberCollection.cs
- EntityTransaction.cs
- ToolStripDropDownClosedEventArgs.cs