Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / whidbey / NetFxQFE / ndp / fx / src / WinForms / Managed / System / WinForms / CheckBoxRenderer.cs / 1 / CheckBoxRenderer.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 CheckBoxRenderer { //Make this per-thread, so that different threads can safely use these methods. [ThreadStatic] private static VisualStyleRenderer visualStyleRenderer = null; private static readonly VisualStyleElement CheckBoxElement = VisualStyleElement.Button.CheckBox.UncheckedNormal; private static bool renderMatchingApplicationState = true; //cannot instantiate private CheckBoxRenderer() { } ////// This is a rendering class for the CheckBox 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(CheckBoxState 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 DrawCheckBox(Graphics g, Point glyphLocation, CheckBoxState state) { Rectangle glyphBounds = new Rectangle(glyphLocation, GetGlyphSize(g, state)); if (RenderWithVisualStyles) { InitializeRenderer((int)state); visualStyleRenderer.DrawBackground(g, glyphBounds); } else { if (IsMixed(state)) { ControlPaint.DrawMixedCheckBox(g, glyphBounds, ConvertToButtonState(state)); } else { ControlPaint.DrawCheckBox(g, glyphBounds, ConvertToButtonState(state)); } } } ////// Renders a CheckBox control. /// ////// /// public static void DrawCheckBox(Graphics g, Point glyphLocation, Rectangle textBounds, string checkBoxText, Font font, bool focused, CheckBoxState state) { DrawCheckBox(g, glyphLocation, textBounds, checkBoxText, font, TextFormatFlags.HorizontalCenter | TextFormatFlags.VerticalCenter | TextFormatFlags.SingleLine, focused, state); } ////// Renders a CheckBox control. /// ////// /// public static void DrawCheckBox(Graphics g, Point glyphLocation, Rectangle textBounds, string checkBoxText, Font font, TextFormatFlags flags, bool focused, CheckBoxState 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 { if (IsMixed(state)) { ControlPaint.DrawMixedCheckBox(g, glyphBounds, ConvertToButtonState(state)); } else { ControlPaint.DrawCheckBox(g, glyphBounds, ConvertToButtonState(state)); } textColor = SystemColors.ControlText; } TextRenderer.DrawText(g, checkBoxText, font, textBounds, textColor, flags); if (focused) { ControlPaint.DrawFocusRectangle(g, textBounds); } } ////// Renders a CheckBox control. /// ////// /// public static void DrawCheckBox(Graphics g, Point glyphLocation, Rectangle textBounds, string checkBoxText, Font font, Image image, Rectangle imageBounds, bool focused, CheckBoxState state) { DrawCheckBox(g, glyphLocation, textBounds, checkBoxText, font, TextFormatFlags.HorizontalCenter | TextFormatFlags.VerticalCenter | TextFormatFlags.SingleLine, image, imageBounds, focused, state); } ////// Renders a CheckBox control. /// ////// /// public static void DrawCheckBox(Graphics g, Point glyphLocation, Rectangle textBounds, string checkBoxText, Font font, TextFormatFlags flags, Image image, Rectangle imageBounds, bool focused, CheckBoxState 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); if (IsMixed(state)) { ControlPaint.DrawMixedCheckBox(g, glyphBounds, ConvertToButtonState(state)); } else { ControlPaint.DrawCheckBox(g, glyphBounds, ConvertToButtonState(state)); } textColor = SystemColors.ControlText; } TextRenderer.DrawText(g, checkBoxText, font, textBounds, textColor, flags); if (focused) { ControlPaint.DrawFocusRectangle(g, textBounds); } } ////// Renders a CheckBox control. /// ////// /// [ SuppressMessage("Microsoft.Design", "CA1011:ConsiderPassingBaseTypesAsParameters") // Using Graphics instead of IDeviceContext intentionally ] public static Size GetGlyphSize(Graphics g, CheckBoxState state) { if (RenderWithVisualStyles) { InitializeRenderer((int)state); return visualStyleRenderer.GetPartSize(g, ThemeSizeType.Draw); } return new Size(13, 13); } internal static ButtonState ConvertToButtonState(CheckBoxState state) { switch (state) { case CheckBoxState.CheckedNormal: case CheckBoxState.CheckedHot: return ButtonState.Checked; case CheckBoxState.CheckedPressed: return (ButtonState.Checked | ButtonState.Pushed); case CheckBoxState.CheckedDisabled: return (ButtonState.Checked | ButtonState.Inactive); case CheckBoxState.UncheckedPressed: return ButtonState.Pushed; case CheckBoxState.UncheckedDisabled: return ButtonState.Inactive; //Downlevel mixed drawing works only if ButtonState.Checked is set case CheckBoxState.MixedNormal: case CheckBoxState.MixedHot: return ButtonState.Checked; case CheckBoxState.MixedPressed: return (ButtonState.Checked | ButtonState.Pushed); case CheckBoxState.MixedDisabled: return (ButtonState.Checked | ButtonState.Inactive); default: return ButtonState.Normal; } } internal static CheckBoxState ConvertFromButtonState(ButtonState state, bool isMixed, bool isHot) { if (isMixed) { if ((state & ButtonState.Pushed) == ButtonState.Pushed) { return CheckBoxState.MixedPressed; } else if ((state & ButtonState.Inactive) == ButtonState.Inactive) { return CheckBoxState.MixedDisabled; } else if (isHot) { return CheckBoxState.MixedHot; } return CheckBoxState.MixedNormal; } else if ((state & ButtonState.Checked) == ButtonState.Checked) { if ((state & ButtonState.Pushed) == ButtonState.Pushed) { return CheckBoxState.CheckedPressed; } else if ((state & ButtonState.Inactive) == ButtonState.Inactive) { return CheckBoxState.CheckedDisabled; } else if (isHot) { return CheckBoxState.CheckedHot; } return CheckBoxState.CheckedNormal; } else { //unchecked if ((state & ButtonState.Pushed) == ButtonState.Pushed) { return CheckBoxState.UncheckedPressed; } else if ((state & ButtonState.Inactive) == ButtonState.Inactive) { return CheckBoxState.UncheckedDisabled; } else if (isHot) { return CheckBoxState.UncheckedHot; } return CheckBoxState.UncheckedNormal; } } private static bool IsMixed(CheckBoxState state) { switch (state) { case CheckBoxState.MixedNormal: case CheckBoxState.MixedHot: case CheckBoxState.MixedPressed: case CheckBoxState.MixedDisabled: return true; default: return false; } } private static void InitializeRenderer(int state) { if (visualStyleRenderer == null) { visualStyleRenderer = new VisualStyleRenderer(CheckBoxElement.ClassName, CheckBoxElement.Part, state); } else { visualStyleRenderer.SetParameters(CheckBoxElement.ClassName, CheckBoxElement.Part, state); } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ ///// Returns the size of the CheckBox glyph. /// ///// 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 CheckBoxRenderer { //Make this per-thread, so that different threads can safely use these methods. [ThreadStatic] private static VisualStyleRenderer visualStyleRenderer = null; private static readonly VisualStyleElement CheckBoxElement = VisualStyleElement.Button.CheckBox.UncheckedNormal; private static bool renderMatchingApplicationState = true; //cannot instantiate private CheckBoxRenderer() { } ////// This is a rendering class for the CheckBox 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(CheckBoxState 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 DrawCheckBox(Graphics g, Point glyphLocation, CheckBoxState state) { Rectangle glyphBounds = new Rectangle(glyphLocation, GetGlyphSize(g, state)); if (RenderWithVisualStyles) { InitializeRenderer((int)state); visualStyleRenderer.DrawBackground(g, glyphBounds); } else { if (IsMixed(state)) { ControlPaint.DrawMixedCheckBox(g, glyphBounds, ConvertToButtonState(state)); } else { ControlPaint.DrawCheckBox(g, glyphBounds, ConvertToButtonState(state)); } } } ////// Renders a CheckBox control. /// ////// /// public static void DrawCheckBox(Graphics g, Point glyphLocation, Rectangle textBounds, string checkBoxText, Font font, bool focused, CheckBoxState state) { DrawCheckBox(g, glyphLocation, textBounds, checkBoxText, font, TextFormatFlags.HorizontalCenter | TextFormatFlags.VerticalCenter | TextFormatFlags.SingleLine, focused, state); } ////// Renders a CheckBox control. /// ////// /// public static void DrawCheckBox(Graphics g, Point glyphLocation, Rectangle textBounds, string checkBoxText, Font font, TextFormatFlags flags, bool focused, CheckBoxState 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 { if (IsMixed(state)) { ControlPaint.DrawMixedCheckBox(g, glyphBounds, ConvertToButtonState(state)); } else { ControlPaint.DrawCheckBox(g, glyphBounds, ConvertToButtonState(state)); } textColor = SystemColors.ControlText; } TextRenderer.DrawText(g, checkBoxText, font, textBounds, textColor, flags); if (focused) { ControlPaint.DrawFocusRectangle(g, textBounds); } } ////// Renders a CheckBox control. /// ////// /// public static void DrawCheckBox(Graphics g, Point glyphLocation, Rectangle textBounds, string checkBoxText, Font font, Image image, Rectangle imageBounds, bool focused, CheckBoxState state) { DrawCheckBox(g, glyphLocation, textBounds, checkBoxText, font, TextFormatFlags.HorizontalCenter | TextFormatFlags.VerticalCenter | TextFormatFlags.SingleLine, image, imageBounds, focused, state); } ////// Renders a CheckBox control. /// ////// /// public static void DrawCheckBox(Graphics g, Point glyphLocation, Rectangle textBounds, string checkBoxText, Font font, TextFormatFlags flags, Image image, Rectangle imageBounds, bool focused, CheckBoxState 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); if (IsMixed(state)) { ControlPaint.DrawMixedCheckBox(g, glyphBounds, ConvertToButtonState(state)); } else { ControlPaint.DrawCheckBox(g, glyphBounds, ConvertToButtonState(state)); } textColor = SystemColors.ControlText; } TextRenderer.DrawText(g, checkBoxText, font, textBounds, textColor, flags); if (focused) { ControlPaint.DrawFocusRectangle(g, textBounds); } } ////// Renders a CheckBox control. /// ////// /// [ SuppressMessage("Microsoft.Design", "CA1011:ConsiderPassingBaseTypesAsParameters") // Using Graphics instead of IDeviceContext intentionally ] public static Size GetGlyphSize(Graphics g, CheckBoxState state) { if (RenderWithVisualStyles) { InitializeRenderer((int)state); return visualStyleRenderer.GetPartSize(g, ThemeSizeType.Draw); } return new Size(13, 13); } internal static ButtonState ConvertToButtonState(CheckBoxState state) { switch (state) { case CheckBoxState.CheckedNormal: case CheckBoxState.CheckedHot: return ButtonState.Checked; case CheckBoxState.CheckedPressed: return (ButtonState.Checked | ButtonState.Pushed); case CheckBoxState.CheckedDisabled: return (ButtonState.Checked | ButtonState.Inactive); case CheckBoxState.UncheckedPressed: return ButtonState.Pushed; case CheckBoxState.UncheckedDisabled: return ButtonState.Inactive; //Downlevel mixed drawing works only if ButtonState.Checked is set case CheckBoxState.MixedNormal: case CheckBoxState.MixedHot: return ButtonState.Checked; case CheckBoxState.MixedPressed: return (ButtonState.Checked | ButtonState.Pushed); case CheckBoxState.MixedDisabled: return (ButtonState.Checked | ButtonState.Inactive); default: return ButtonState.Normal; } } internal static CheckBoxState ConvertFromButtonState(ButtonState state, bool isMixed, bool isHot) { if (isMixed) { if ((state & ButtonState.Pushed) == ButtonState.Pushed) { return CheckBoxState.MixedPressed; } else if ((state & ButtonState.Inactive) == ButtonState.Inactive) { return CheckBoxState.MixedDisabled; } else if (isHot) { return CheckBoxState.MixedHot; } return CheckBoxState.MixedNormal; } else if ((state & ButtonState.Checked) == ButtonState.Checked) { if ((state & ButtonState.Pushed) == ButtonState.Pushed) { return CheckBoxState.CheckedPressed; } else if ((state & ButtonState.Inactive) == ButtonState.Inactive) { return CheckBoxState.CheckedDisabled; } else if (isHot) { return CheckBoxState.CheckedHot; } return CheckBoxState.CheckedNormal; } else { //unchecked if ((state & ButtonState.Pushed) == ButtonState.Pushed) { return CheckBoxState.UncheckedPressed; } else if ((state & ButtonState.Inactive) == ButtonState.Inactive) { return CheckBoxState.UncheckedDisabled; } else if (isHot) { return CheckBoxState.UncheckedHot; } return CheckBoxState.UncheckedNormal; } } private static bool IsMixed(CheckBoxState state) { switch (state) { case CheckBoxState.MixedNormal: case CheckBoxState.MixedHot: case CheckBoxState.MixedPressed: case CheckBoxState.MixedDisabled: return true; default: return false; } } private static void InitializeRenderer(int state) { if (visualStyleRenderer == null) { visualStyleRenderer = new VisualStyleRenderer(CheckBoxElement.ClassName, CheckBoxElement.Part, state); } else { visualStyleRenderer.SetParameters(CheckBoxElement.ClassName, CheckBoxElement.Part, state); } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007./// Returns the size of the CheckBox glyph. /// ///
Link Menu

This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- SystemUnicastIPAddressInformation.cs
- OleDbDataReader.cs
- ResourceDictionaryCollection.cs
- ChildDocumentBlock.cs
- NavigationFailedEventArgs.cs
- BoundsDrawingContextWalker.cs
- SessionStateModule.cs
- GuidTagList.cs
- Privilege.cs
- UInt16.cs
- FilteredReadOnlyMetadataCollection.cs
- ExpressionBuilderCollection.cs
- ConfigsHelper.cs
- BitmapData.cs
- SimpleExpression.cs
- odbcmetadatafactory.cs
- CompilerCollection.cs
- WebPartConnectVerb.cs
- WebControlAdapter.cs
- COAUTHINFO.cs
- Property.cs
- DatePickerDateValidationErrorEventArgs.cs
- BitmapFrame.cs
- DragCompletedEventArgs.cs
- CompilerResults.cs
- RemoteWebConfigurationHostStream.cs
- ModelTreeManager.cs
- IISMapPath.cs
- XmlUnspecifiedAttribute.cs
- XamlReaderHelper.cs
- ApplicationId.cs
- Compiler.cs
- NotifyCollectionChangedEventArgs.cs
- WindowsGrip.cs
- VirtualDirectoryMapping.cs
- Context.cs
- CSharpCodeProvider.cs
- UnknownWrapper.cs
- TdsEnums.cs
- WorkflowQueue.cs
- FileRegion.cs
- RemoteWebConfigurationHostServer.cs
- AmbientProperties.cs
- ActiveXSite.cs
- AnimationLayer.cs
- SqlBulkCopyColumnMappingCollection.cs
- EventLogEntryCollection.cs
- TextEndOfLine.cs
- SafeRsaProviderHandle.cs
- PointF.cs
- SocketException.cs
- TrustManager.cs
- SafeMILHandleMemoryPressure.cs
- PeerNameResolver.cs
- IsolatedStorageException.cs
- ConstraintCollection.cs
- HttpListenerContext.cs
- SelectionItemProviderWrapper.cs
- ControlAdapter.cs
- Attributes.cs
- XmlTypeAttribute.cs
- DataControlCommands.cs
- returneventsaver.cs
- ColumnResult.cs
- SystemParameters.cs
- MetafileHeaderEmf.cs
- MetadataPropertyvalue.cs
- TemplatePropertyEntry.cs
- ConfigurationValue.cs
- AspNetRouteServiceHttpHandler.cs
- QilUnary.cs
- RegistryDataKey.cs
- RepeaterItem.cs
- RowsCopiedEventArgs.cs
- WizardPanel.cs
- NullableLongMinMaxAggregationOperator.cs
- AudienceUriMode.cs
- EditCommandColumn.cs
- ScriptResourceAttribute.cs
- CssTextWriter.cs
- SqlConnectionManager.cs
- CacheOutputQuery.cs
- ImageMapEventArgs.cs
- OdbcUtils.cs
- TrackingStringDictionary.cs
- ReferenceConverter.cs
- OrderPreservingMergeHelper.cs
- AttachedPropertyMethodSelector.cs
- UserNameSecurityToken.cs
- GroupItemAutomationPeer.cs
- Page.cs
- ExcludePathInfo.cs
- AssertSection.cs
- GetResponse.cs
- _FtpControlStream.cs
- _SingleItemRequestCache.cs
- CompareValidator.cs
- UrlParameterWriter.cs
- JsonDeserializer.cs
- Pair.cs