Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / WinForms / Managed / System / WinForms / RadioButtonRenderer.cs / 1 / RadioButtonRenderer.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Windows.Forms { using System; using System.Drawing; using System.Diagnostics.CodeAnalysis; using System.Windows.Forms.Internal; using System.Windows.Forms.VisualStyles; using Microsoft.Win32; ////// /// public sealed class RadioButtonRenderer { //Make this per-thread, so that different threads can safely use these methods. [ThreadStatic] private static VisualStyleRenderer visualStyleRenderer = null; private static readonly VisualStyleElement RadioElement = VisualStyleElement.Button.RadioButton.UncheckedNormal; private static bool renderMatchingApplicationState = true; //cannot instantiate private RadioButtonRenderer() { } ////// This is a rendering class for the RadioButton control. It works downlevel too (obviously /// without visual styles applied.) /// ////// /// public static bool RenderMatchingApplicationState { get { return renderMatchingApplicationState; } set { renderMatchingApplicationState = value; } } private static bool RenderWithVisualStyles { get { return (!renderMatchingApplicationState || Application.RenderWithVisualStyles); } } ////// If this property is true, then the renderer will use the setting from Application.RenderWithVisualStyles to /// determine how to render. /// If this property is false, the renderer will always render with visualstyles. /// ////// /// public static bool IsBackgroundPartiallyTransparent(RadioButtonState state) { if (RenderWithVisualStyles) { InitializeRenderer((int)state); return visualStyleRenderer.IsBackgroundPartiallyTransparent(); } else { return false; //for downlevel, this is false } } ////// Returns true if the background corresponding to the given state is partially transparent, else false. /// ////// /// [ SuppressMessage("Microsoft.Design", "CA1011:ConsiderPassingBaseTypesAsParameters") // Using Graphics instead of IDeviceContext intentionally ] public static void DrawParentBackground(Graphics g, Rectangle bounds, Control childControl) { if (RenderWithVisualStyles) { InitializeRenderer(0); visualStyleRenderer.DrawParentBackground(g, bounds, childControl); } } ////// This is just a convenience wrapper for VisualStyleRenderer.DrawThemeParentBackground. For downlevel, /// this isn't required and does nothing. /// ////// /// public static void DrawRadioButton(Graphics g, Point glyphLocation, RadioButtonState state) { Rectangle glyphBounds = new Rectangle(glyphLocation, GetGlyphSize(g, state)); if (RenderWithVisualStyles) { InitializeRenderer((int)state); visualStyleRenderer.DrawBackground(g, glyphBounds); } else { ControlPaint.DrawRadioButton(g, glyphBounds, ConvertToButtonState(state)); } } ////// Renders a RadioButton control. /// ////// /// public static void DrawRadioButton(Graphics g, Point glyphLocation, Rectangle textBounds, string radioButtonText, Font font, bool focused, RadioButtonState state) { DrawRadioButton(g, glyphLocation, textBounds, radioButtonText, font, TextFormatFlags.HorizontalCenter | TextFormatFlags.VerticalCenter | TextFormatFlags.SingleLine, focused, state); } ////// Renders a RadioButton control. /// ////// /// public static void DrawRadioButton(Graphics g, Point glyphLocation, Rectangle textBounds, string radioButtonText, Font font, TextFormatFlags flags, bool focused, RadioButtonState state) { Rectangle glyphBounds = new Rectangle(glyphLocation, GetGlyphSize(g, state)); Color textColor; if (RenderWithVisualStyles) { InitializeRenderer((int)state); visualStyleRenderer.DrawBackground(g, glyphBounds); textColor = visualStyleRenderer.GetColor(ColorProperty.TextColor); } else { ControlPaint.DrawRadioButton(g, glyphBounds, ConvertToButtonState(state)); textColor = SystemColors.ControlText; } TextRenderer.DrawText(g, radioButtonText, font, textBounds, textColor, flags); if (focused) { ControlPaint.DrawFocusRectangle(g, textBounds); } } ////// Renders a RadioButton control. /// ////// /// public static void DrawRadioButton(Graphics g, Point glyphLocation, Rectangle textBounds, string radioButtonText, Font font, Image image, Rectangle imageBounds, bool focused, RadioButtonState state) { DrawRadioButton(g, glyphLocation, textBounds, radioButtonText, font, TextFormatFlags.HorizontalCenter | TextFormatFlags.VerticalCenter | TextFormatFlags.SingleLine, image, imageBounds, focused, state); } ////// Renders a RadioButton control. /// ////// /// public static void DrawRadioButton(Graphics g, Point glyphLocation, Rectangle textBounds, string radioButtonText, Font font, TextFormatFlags flags, Image image, Rectangle imageBounds, bool focused, RadioButtonState state) { Rectangle glyphBounds = new Rectangle(glyphLocation, GetGlyphSize(g, state)); Color textColor; if (RenderWithVisualStyles) { InitializeRenderer((int)state); //Keep this drawing order! It matches default drawing order. visualStyleRenderer.DrawImage(g, imageBounds, image); visualStyleRenderer.DrawBackground(g, glyphBounds); textColor = visualStyleRenderer.GetColor(ColorProperty.TextColor); } else { g.DrawImage(image, imageBounds); ControlPaint.DrawRadioButton(g, glyphBounds, ConvertToButtonState(state)); textColor = SystemColors.ControlText; } TextRenderer.DrawText(g, radioButtonText, font, textBounds, textColor, flags); if (focused) { ControlPaint.DrawFocusRectangle(g, textBounds); } } ////// Renders a RadioButton control. /// ////// /// [ SuppressMessage("Microsoft.Design", "CA1011:ConsiderPassingBaseTypesAsParameters") // Using Graphics instead of IDeviceContext intentionally ] public static Size GetGlyphSize(Graphics g, RadioButtonState state) { if (RenderWithVisualStyles) { InitializeRenderer((int)state); return visualStyleRenderer.GetPartSize(g, ThemeSizeType.Draw); } return new Size(13, 13); } internal static ButtonState ConvertToButtonState(RadioButtonState state) { switch (state) { case RadioButtonState.CheckedNormal: case RadioButtonState.CheckedHot: return ButtonState.Checked; case RadioButtonState.CheckedPressed: return (ButtonState.Checked | ButtonState.Pushed); case RadioButtonState.CheckedDisabled: return (ButtonState.Checked | ButtonState.Inactive); case RadioButtonState.UncheckedPressed: return ButtonState.Pushed; case RadioButtonState.UncheckedDisabled: return ButtonState.Inactive; default: return ButtonState.Normal; } } internal static RadioButtonState ConvertFromButtonState(ButtonState state, bool isHot) { if ((state & ButtonState.Checked) == ButtonState.Checked) { if ((state & ButtonState.Pushed) == ButtonState.Pushed) { return RadioButtonState.CheckedPressed; } else if ((state & ButtonState.Inactive) == ButtonState.Inactive) { return RadioButtonState.CheckedDisabled; } else if (isHot) { return RadioButtonState.CheckedHot; } return RadioButtonState.CheckedNormal; } else { //unchecked if ((state & ButtonState.Pushed) == ButtonState.Pushed) { return RadioButtonState.UncheckedPressed; } else if ((state & ButtonState.Inactive) == ButtonState.Inactive) { return RadioButtonState.UncheckedDisabled; } else if (isHot) { return RadioButtonState.UncheckedHot; } return RadioButtonState.UncheckedNormal; } } private static void InitializeRenderer(int state) { if (visualStyleRenderer == null) { visualStyleRenderer = new VisualStyleRenderer(RadioElement.ClassName, RadioElement.Part, state); } else { visualStyleRenderer.SetParameters(RadioElement.ClassName, RadioElement.Part, state); } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved./// Returns the size of the RadioButton glyph. /// ///
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- ReferenceEqualityComparer.cs
- ByteRangeDownloader.cs
- CustomError.cs
- XmlProcessingInstruction.cs
- typedescriptorpermissionattribute.cs
- ViewPort3D.cs
- MsmqPoisonMessageException.cs
- TextServicesManager.cs
- UnmanagedMemoryStreamWrapper.cs
- SqlConnection.cs
- OutputCacheProfileCollection.cs
- SiteMapDataSourceDesigner.cs
- ToolbarAUtomationPeer.cs
- HttpRawResponse.cs
- CreateCardRequest.cs
- CompilerCollection.cs
- HelpKeywordAttribute.cs
- GrammarBuilderRuleRef.cs
- securestring.cs
- DbDataAdapter.cs
- InkCanvas.cs
- ErrorView.xaml.cs
- WindowsSlider.cs
- DataGridViewCellConverter.cs
- IsolatedStorageSecurityState.cs
- errorpatternmatcher.cs
- Byte.cs
- StaticExtensionConverter.cs
- TextContainerHelper.cs
- OdbcCommand.cs
- TrackingServices.cs
- TextEffect.cs
- IisTraceWebEventProvider.cs
- UntypedNullExpression.cs
- SerializationIncompleteException.cs
- WebHeaderCollection.cs
- HttpCapabilitiesSectionHandler.cs
- SchemaImporterExtensionElement.cs
- CompilerError.cs
- LocationReferenceValue.cs
- StandardBindingElementCollection.cs
- ScriptingJsonSerializationSection.cs
- DataBoundControl.cs
- XamlStream.cs
- BrowserCapabilitiesCompiler.cs
- SrgsNameValueTag.cs
- DefaultTextStoreTextComposition.cs
- SQLDouble.cs
- ObjectResult.cs
- ImageSource.cs
- TextDocumentView.cs
- IndicFontClient.cs
- CustomErrorsSection.cs
- QuaternionKeyFrameCollection.cs
- CompleteWizardStep.cs
- OleTxTransaction.cs
- Mutex.cs
- ConfigurationElement.cs
- RepeatButton.cs
- SR.cs
- AuthStoreRoleProvider.cs
- ProjectionAnalyzer.cs
- SelectionPatternIdentifiers.cs
- MDIControlStrip.cs
- NetStream.cs
- RelatedEnd.cs
- TemplateColumn.cs
- ReadOnlyNameValueCollection.cs
- StaticDataManager.cs
- DbParameterHelper.cs
- EntityDataSourceContainerNameConverter.cs
- WebPartConnectionsConfigureVerb.cs
- Compiler.cs
- Popup.cs
- LinqDataSourceUpdateEventArgs.cs
- TreeViewAutomationPeer.cs
- ComponentCommands.cs
- GetCertificateRequest.cs
- UseAttributeSetsAction.cs
- BindingNavigator.cs
- InputMethodStateChangeEventArgs.cs
- SrgsOneOf.cs
- ListCommandEventArgs.cs
- X509ImageLogo.cs
- TraceSwitch.cs
- Int32Collection.cs
- FixedLineResult.cs
- PersonalizationDictionary.cs
- Debug.cs
- DefaultValidator.cs
- ListView.cs
- ProfileParameter.cs
- SqlRemoveConstantOrderBy.cs
- ImplicitInputBrush.cs
- TextSelectionHighlightLayer.cs
- RangeBase.cs
- HtmlTextArea.cs
- RemotingService.cs
- MimeParameter.cs
- CommandBindingCollection.cs