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
- BaseCodeDomTreeGenerator.cs
- DataSourceSelectArguments.cs
- FontDriver.cs
- SpeakInfo.cs
- BinaryReader.cs
- MultiTrigger.cs
- GridEntryCollection.cs
- DataConnectionHelper.cs
- activationcontext.cs
- SendMessageChannelCache.cs
- XmlElementList.cs
- DataDocumentXPathNavigator.cs
- AnnotationComponentChooser.cs
- StringOutput.cs
- TextServicesContext.cs
- SiteMembershipCondition.cs
- HttpClientCertificate.cs
- PixelFormats.cs
- CompositeDataBoundControl.cs
- StringCollection.cs
- CornerRadiusConverter.cs
- ThreadPoolTaskScheduler.cs
- EmptyWorkItem.cs
- SiteMapSection.cs
- DocumentOrderQuery.cs
- ObjectPersistData.cs
- Point4D.cs
- StaticSiteMapProvider.cs
- KnownAssembliesSet.cs
- DbModificationClause.cs
- SmiEventSink.cs
- ReadOnlyNameValueCollection.cs
- XamlSerializationHelper.cs
- JavaScriptString.cs
- HandleInitializationContext.cs
- RegexParser.cs
- NonSerializedAttribute.cs
- ProcessModuleDesigner.cs
- XPathParser.cs
- ComplexPropertyEntry.cs
- DBConnectionString.cs
- PageThemeParser.cs
- TdsParser.cs
- OdbcTransaction.cs
- EventlogProvider.cs
- InvalidCommandTreeException.cs
- RawStylusActions.cs
- CopyAction.cs
- AutomationPatternInfo.cs
- WebConfigurationFileMap.cs
- WebPartDisplayModeCancelEventArgs.cs
- TemplateGroupCollection.cs
- PropertyPushdownHelper.cs
- SettingsPropertyValueCollection.cs
- ListenerTraceUtility.cs
- DisplayMemberTemplateSelector.cs
- URLEditor.cs
- TextTrailingCharacterEllipsis.cs
- XmlWrappingReader.cs
- Decoder.cs
- QuaternionAnimation.cs
- _Connection.cs
- TimerEventSubscriptionCollection.cs
- RowVisual.cs
- ByteFacetDescriptionElement.cs
- DataControlFieldCollection.cs
- PrintControllerWithStatusDialog.cs
- ReceiveSecurityHeaderElementManager.cs
- DesignerLoader.cs
- ParserContext.cs
- Screen.cs
- ValidationPropertyAttribute.cs
- SamlAttributeStatement.cs
- DbProviderManifest.cs
- XmlFormatExtensionAttribute.cs
- XmlSerializerFactory.cs
- EventPrivateKey.cs
- FileDialogCustomPlacesCollection.cs
- WebPartConnectionsCancelEventArgs.cs
- EnumMemberAttribute.cs
- QueryCacheEntry.cs
- PointUtil.cs
- ExtentJoinTreeNode.cs
- SiteOfOriginPart.cs
- EncodedStreamFactory.cs
- filewebresponse.cs
- ResourceContainer.cs
- XmlChildNodes.cs
- BrowserCapabilitiesCompiler.cs
- AssertFilter.cs
- ScriptingSectionGroup.cs
- Matrix.cs
- ToolStripOverflow.cs
- ListViewTableRow.cs
- XmlNamespaceMapping.cs
- Matrix3DConverter.cs
- DataServiceSaveChangesEventArgs.cs
- SystemIcmpV6Statistics.cs
- ColorIndependentAnimationStorage.cs
- AccessKeyManager.cs