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
- FixUpCollection.cs
- CounterCreationDataCollection.cs
- StandardBindingReliableSessionElement.cs
- InputElement.cs
- COM2Enum.cs
- SqlCachedBuffer.cs
- AppSettings.cs
- XmlSerializerSection.cs
- DataGridViewCheckBoxColumn.cs
- ConnectionStringSettingsCollection.cs
- Context.cs
- mil_sdk_version.cs
- GridViewAutomationPeer.cs
- ScrollItemPattern.cs
- Point3DAnimationBase.cs
- MarshalByValueComponent.cs
- ComplexBindingPropertiesAttribute.cs
- Odbc32.cs
- Pens.cs
- TextAutomationPeer.cs
- XpsFilter.cs
- ImageClickEventArgs.cs
- HtmlTernaryTree.cs
- HyperlinkAutomationPeer.cs
- StickyNote.cs
- LongPath.cs
- SiteMapNodeItem.cs
- ReliabilityContractAttribute.cs
- FamilyTypeface.cs
- WeakHashtable.cs
- _FtpDataStream.cs
- RequestCachePolicy.cs
- XmlByteStreamReader.cs
- AdornedElementPlaceholder.cs
- SqlRewriteScalarSubqueries.cs
- DocumentViewerBase.cs
- _CookieModule.cs
- StringValidator.cs
- Nullable.cs
- EntityTypeBase.cs
- JournalNavigationScope.cs
- NullableDoubleMinMaxAggregationOperator.cs
- ValueProviderWrapper.cs
- DynamicUpdateCommand.cs
- IBuiltInEvidence.cs
- ColumnWidthChangingEvent.cs
- LZCodec.cs
- MouseEvent.cs
- ProxyElement.cs
- DeviceContext.cs
- SubqueryRules.cs
- EntityConnectionStringBuilderItem.cs
- WebPartZoneCollection.cs
- WebControl.cs
- IUnknownConstantAttribute.cs
- PaperSource.cs
- ToolStripPanelRow.cs
- mongolianshape.cs
- X509SecurityTokenAuthenticator.cs
- VectorCollection.cs
- TreeNodeStyleCollection.cs
- ResourceSetExpression.cs
- LeftCellWrapper.cs
- PasswordDeriveBytes.cs
- Roles.cs
- ErrorWrapper.cs
- EncryptedType.cs
- WebPartMovingEventArgs.cs
- SingleAnimation.cs
- GridLengthConverter.cs
- XmlSchemaSimpleContent.cs
- ObjectSecurity.cs
- assertwrapper.cs
- ScriptReference.cs
- DataGridViewCellToolTipTextNeededEventArgs.cs
- UserControlParser.cs
- InstanceNormalEvent.cs
- SearchForVirtualItemEventArgs.cs
- XmlSchemaAnyAttribute.cs
- DynamicPropertyReader.cs
- OracleBinary.cs
- XmlIgnoreAttribute.cs
- DecimalAnimation.cs
- UInt64.cs
- ModelServiceImpl.cs
- VSWCFServiceContractGenerator.cs
- PeerApplication.cs
- FlowchartSizeFeature.cs
- WebPartEditorOkVerb.cs
- ScriptReferenceBase.cs
- CollectionBuilder.cs
- XmlWellformedWriter.cs
- IconHelper.cs
- RoleManagerModule.cs
- MouseDevice.cs
- Set.cs
- Ref.cs
- ProcessInfo.cs
- OptionUsage.cs
- Pair.cs