Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / whidbey / NetFxQFE / ndp / fx / src / WinForms / Managed / System / WinForms / Triangle.cs / 1 / 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
- TemplateColumn.cs
- StringHandle.cs
- PenThreadWorker.cs
- AccessViolationException.cs
- Thumb.cs
- UrlPropertyAttribute.cs
- SimpleTypeResolver.cs
- CharacterHit.cs
- ObjectNavigationPropertyMapping.cs
- SoapAttributeOverrides.cs
- ToolStripDropDownMenu.cs
- X509Utils.cs
- SolidBrush.cs
- Rect3DConverter.cs
- TranslateTransform.cs
- BuildManagerHost.cs
- TreeNodeMouseHoverEvent.cs
- ArrayTypeMismatchException.cs
- DataGridViewRowErrorTextNeededEventArgs.cs
- GeometryHitTestParameters.cs
- BaseValidator.cs
- EntityStoreSchemaGenerator.cs
- Matrix3DConverter.cs
- TypeResolvingOptionsAttribute.cs
- XmlElementElement.cs
- MaterialGroup.cs
- DuplexSecurityProtocolFactory.cs
- Parameter.cs
- SerializationAttributes.cs
- WebPartUtil.cs
- GeneralTransformGroup.cs
- TraceShell.cs
- TransformPattern.cs
- FixedBufferAttribute.cs
- CodeParameterDeclarationExpressionCollection.cs
- Internal.cs
- ItemCollection.cs
- TargetPerspective.cs
- FunctionCommandText.cs
- HandlerBase.cs
- VisualStyleElement.cs
- FixedPageAutomationPeer.cs
- FontDifferentiator.cs
- _NativeSSPI.cs
- TextComposition.cs
- WSSecureConversationFeb2005.cs
- BrowserCapabilitiesFactoryBase.cs
- DataSourceSelectArguments.cs
- Location.cs
- BitVec.cs
- BamlTreeMap.cs
- HttpStaticObjectsCollectionWrapper.cs
- ellipse.cs
- TrackingMemoryStream.cs
- ListItemConverter.cs
- PreservationFileReader.cs
- ExtractorMetadata.cs
- NameTable.cs
- OrthographicCamera.cs
- AddInBase.cs
- RenamedEventArgs.cs
- DataControlButton.cs
- IsolatedStorageException.cs
- NestPullup.cs
- DesignRelation.cs
- EnumerableCollectionView.cs
- DbConvert.cs
- WarningException.cs
- LambdaCompiler.ControlFlow.cs
- Bitmap.cs
- MarkupExtensionReturnTypeAttribute.cs
- ArrangedElement.cs
- ViewManager.cs
- ResourceManager.cs
- PerspectiveCamera.cs
- HostedElements.cs
- HostingPreferredMapPath.cs
- RIPEMD160Managed.cs
- HtmlInputPassword.cs
- HtmlInputFile.cs
- ProfileManager.cs
- SettingsBindableAttribute.cs
- ThreadStaticAttribute.cs
- EventLog.cs
- PostBackTrigger.cs
- InternalCompensate.cs
- CompilerGlobalScopeAttribute.cs
- Serializer.cs
- CompositeKey.cs
- CodeAttributeArgument.cs
- WebPartEditVerb.cs
- EditorPartDesigner.cs
- ContextItem.cs
- FindSimilarActivitiesVerb.cs
- CompareInfo.cs
- XsdBuildProvider.cs
- Clipboard.cs
- AuthenticatingEventArgs.cs
- ResourceContainer.cs
- XPathEmptyIterator.cs