Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / Designer / WinForms / System / WinForms / Design / Behavior / GrabHandleGlyph.cs / 1 / GrabHandleGlyph.cs
namespace System.Windows.Forms.Design.Behavior { using System; using System.Collections; using System.ComponentModel; using System.ComponentModel.Design; using System.Design; using System.Diagnostics; using System.Drawing; using System.Drawing.Drawing2D; using System.Windows.Forms.Design; using System.Runtime.InteropServices; ////// /// The GrabHandleGlyph represents the 8 handles of our new seleciton /// model. Note that the pen and brush are created once per instance of this class /// and re-used in our painting logic for perf. reasonse. /// internal class GrabHandleGlyph : SelectionGlyphBase { private bool isPrimary = false; ////// /// GrabHandleGlyph's constructor takes additional parameters: 'type' and 'primary selection'. /// Also, we create/cache our pen & brush here to avoid this action with every paint message. /// internal GrabHandleGlyph(Rectangle controlBounds, GrabHandleGlyphType type, Behavior behavior, bool primarySelection) : base(behavior) { isPrimary = primarySelection; hitTestCursor = Cursors.Default; rules = SelectionRules.None; // We +/- DesignerUtils.HANDLEOVERLAP because we want each GrabHandle to overlap the control by DesignerUtils.HANDLEOVERLAP pixels switch (type) { case GrabHandleGlyphType.UpperLeft: bounds = new Rectangle((controlBounds.X+DesignerUtils.HANDLEOVERLAP) - DesignerUtils.HANDLESIZE, (controlBounds.Y+DesignerUtils.HANDLEOVERLAP) - DesignerUtils.HANDLESIZE, DesignerUtils.HANDLESIZE, DesignerUtils.HANDLESIZE); hitTestCursor = Cursors.SizeNWSE; rules = SelectionRules.TopSizeable | SelectionRules.LeftSizeable; break; case GrabHandleGlyphType.UpperRight: bounds = new Rectangle(controlBounds.Right - DesignerUtils.HANDLEOVERLAP, (controlBounds.Y+DesignerUtils.HANDLEOVERLAP) - DesignerUtils.HANDLESIZE, DesignerUtils.HANDLESIZE, DesignerUtils.HANDLESIZE); hitTestCursor = Cursors.SizeNESW; rules = SelectionRules.TopSizeable | SelectionRules.RightSizeable; break; case GrabHandleGlyphType.LowerRight: bounds = new Rectangle(controlBounds.Right - DesignerUtils.HANDLEOVERLAP, controlBounds.Bottom-DesignerUtils.HANDLEOVERLAP, DesignerUtils.HANDLESIZE, DesignerUtils.HANDLESIZE); hitTestCursor = Cursors.SizeNWSE; rules = SelectionRules.BottomSizeable | SelectionRules.RightSizeable; break; case GrabHandleGlyphType.LowerLeft: bounds = new Rectangle((controlBounds.X+DesignerUtils.HANDLEOVERLAP) -DesignerUtils.HANDLESIZE, controlBounds.Bottom-DesignerUtils.HANDLEOVERLAP, DesignerUtils.HANDLESIZE, DesignerUtils.HANDLESIZE); hitTestCursor = Cursors.SizeNESW; rules = SelectionRules.BottomSizeable | SelectionRules.LeftSizeable; break; case GrabHandleGlyphType.MiddleTop: // Only add this one if there's room enough. Room is enough is as follows: // 2*HANDLEOVERLAP for UpperLeft and UpperRight handles, 1 HANDLESIZE for the MiddleTop handle, 1 HANDLESIZE // for padding if (controlBounds.Width >= (2 * DesignerUtils.HANDLEOVERLAP) + (2 * DesignerUtils.HANDLESIZE)) { bounds = new Rectangle(controlBounds.X + (controlBounds.Width/2) - (DesignerUtils.HANDLESIZE/2), (controlBounds.Y+DesignerUtils.HANDLEOVERLAP) - DesignerUtils.HANDLESIZE, DesignerUtils.HANDLESIZE, DesignerUtils.HANDLESIZE); hitTestCursor = Cursors.SizeNS; rules = SelectionRules.TopSizeable; } break; case GrabHandleGlyphType.MiddleBottom: // Only add this one if there's room enough. Room is enough is as follows: // 2*HANDLEOVERLAP for LowerLeft and LowerRight handles, 1 HANDLESIZE for the MiddleBottom handle, 1 HANDLESIZE // for padding if (controlBounds.Width >= (2 * DesignerUtils.HANDLEOVERLAP) + (2 * DesignerUtils.HANDLESIZE)) { bounds = new Rectangle(controlBounds.X + (controlBounds.Width/2) - (DesignerUtils.HANDLESIZE/2), controlBounds.Bottom-DesignerUtils.HANDLEOVERLAP, DesignerUtils.HANDLESIZE, DesignerUtils.HANDLESIZE); hitTestCursor = Cursors.SizeNS; rules = SelectionRules.BottomSizeable; } break; case GrabHandleGlyphType.MiddleLeft: // Only add this one if there's room enough. Room is enough is as follows: // 2*HANDLEOVERLAP for UpperLeft and LowerLeft handles, 1 HANDLESIZE for the MiddleLeft handle, 1 HANDLESIZE // for padding if (controlBounds.Height >= (2 * DesignerUtils.HANDLEOVERLAP) + (2 * DesignerUtils.HANDLESIZE)) { bounds = new Rectangle((controlBounds.X+DesignerUtils.HANDLEOVERLAP) - DesignerUtils.HANDLESIZE, controlBounds.Y + (controlBounds.Height/2) - (DesignerUtils.HANDLESIZE/2), DesignerUtils.HANDLESIZE, DesignerUtils.HANDLESIZE); hitTestCursor = Cursors.SizeWE; rules = SelectionRules.LeftSizeable; } break; case GrabHandleGlyphType.MiddleRight: // Only add this one if there's room enough. Room is enough is as follows: // 2*HANDLEOVERLAP for UpperRight and LowerRight handles, 1 HANDLESIZE for the MiddleRight handle, 1 HANDLESIZE // for padding if (controlBounds.Height >= (2 * DesignerUtils.HANDLEOVERLAP) + (2 * DesignerUtils.HANDLESIZE)) { bounds = new Rectangle(controlBounds.Right - DesignerUtils.HANDLEOVERLAP, controlBounds.Y + (controlBounds.Height/2) - (DesignerUtils.HANDLESIZE/2), DesignerUtils.HANDLESIZE, DesignerUtils.HANDLESIZE); hitTestCursor = Cursors.SizeWE; rules = SelectionRules.RightSizeable; } break; default: Debug.Assert(false, "GrabHandleGlyph was called with a bad GrapHandleGlyphType."); break; } hitBounds = bounds; } ////// /// Very simple paint logic. /// public override void Paint(PaintEventArgs pe) { DesignerUtils.DrawGrabHandle(pe.Graphics, bounds, isPrimary, this); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- TreeNode.cs
- FileDialogCustomPlacesCollection.cs
- Stack.cs
- DelegatedStream.cs
- XPathAncestorQuery.cs
- AppSettingsExpressionBuilder.cs
- CodeTypeParameter.cs
- Serializer.cs
- DataGridViewRow.cs
- MetadataException.cs
- ClientSideProviderDescription.cs
- KeyTime.cs
- GridViewSelectEventArgs.cs
- WebExceptionStatus.cs
- SettingsSavedEventArgs.cs
- RangeValuePattern.cs
- FlowPosition.cs
- TagPrefixInfo.cs
- NonClientArea.cs
- CompositeDataBoundControl.cs
- XmlEncodedRawTextWriter.cs
- MetadataFile.cs
- CodeNamespace.cs
- WorkBatch.cs
- KeyInterop.cs
- LayoutSettings.cs
- PathFigureCollection.cs
- ByteFacetDescriptionElement.cs
- EventlogProvider.cs
- HasCopySemanticsAttribute.cs
- KeyToListMap.cs
- JournalEntryStack.cs
- TextServicesPropertyRanges.cs
- ViewManager.cs
- AdjustableArrowCap.cs
- TwoPhaseCommit.cs
- ValidationResults.cs
- NumberSubstitution.cs
- MetadataUtil.cs
- _SSPISessionCache.cs
- OleAutBinder.cs
- ApplicationFileParser.cs
- BooleanToVisibilityConverter.cs
- fixedPageContentExtractor.cs
- Drawing.cs
- RelationshipEndMember.cs
- ImageListUtils.cs
- ZipIOExtraFieldPaddingElement.cs
- DataGridViewColumnEventArgs.cs
- RadioButtonBaseAdapter.cs
- ClientApiGenerator.cs
- TextBoxLine.cs
- QuaternionIndependentAnimationStorage.cs
- BaseTemplateParser.cs
- UrlMapping.cs
- TimersDescriptionAttribute.cs
- SoapElementAttribute.cs
- ToolStripSeparatorRenderEventArgs.cs
- KeyPressEvent.cs
- precedingsibling.cs
- TypeSystem.cs
- FrameworkContentElement.cs
- FrameworkReadOnlyPropertyMetadata.cs
- WindowsFormsHostPropertyMap.cs
- _PooledStream.cs
- ComPlusAuthorization.cs
- DataGridToolTip.cs
- panel.cs
- StringConverter.cs
- ManipulationLogic.cs
- ErrorFormatterPage.cs
- MatchSingleFxEngineOpcode.cs
- TypefaceCollection.cs
- ExecutionEngineException.cs
- DataGridViewCellStyleChangedEventArgs.cs
- FixUpCollection.cs
- XmlReflectionImporter.cs
- ObjectDataSourceDesigner.cs
- FrameDimension.cs
- TagMapCollection.cs
- XamlToRtfParser.cs
- SecurityUtils.cs
- SapiRecoInterop.cs
- PassportAuthentication.cs
- DoubleUtil.cs
- ApplicationServicesHostFactory.cs
- SQLString.cs
- Geometry.cs
- EncryptedPackageFilter.cs
- SqlHelper.cs
- PeerCollaboration.cs
- DBConnection.cs
- AvTraceFormat.cs
- NonBatchDirectoryCompiler.cs
- ISAPIWorkerRequest.cs
- XAMLParseException.cs
- DispatcherExceptionFilterEventArgs.cs
- SpeakProgressEventArgs.cs
- ListViewContainer.cs
- WizardSideBarListControlItemEventArgs.cs