Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / WinForms / Managed / System / WinForms / CheckBoxRenderer.cs / 1305376 / 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. /// ///
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- MouseActionConverter.cs
- SafeUserTokenHandle.cs
- ListViewCancelEventArgs.cs
- HttpCapabilitiesEvaluator.cs
- TemplateBindingExpression.cs
- MetadataCache.cs
- DmlSqlGenerator.cs
- RC2CryptoServiceProvider.cs
- CriticalFinalizerObject.cs
- MatchNoneMessageFilter.cs
- MultiPageTextView.cs
- FileDialog.cs
- Utils.cs
- DesignTimeParseData.cs
- XmlTextReaderImpl.cs
- SpecialFolderEnumConverter.cs
- DirectoryObjectSecurity.cs
- Stroke.cs
- ProtocolViolationException.cs
- ThemeDictionaryExtension.cs
- ProfileSettings.cs
- DefaultValueAttribute.cs
- RegularExpressionValidator.cs
- Translator.cs
- SqlFacetAttribute.cs
- FixedDocumentPaginator.cs
- RenderTargetBitmap.cs
- ExpressionBindings.cs
- SiteMapProvider.cs
- ExpressionBuilderCollection.cs
- SpeakInfo.cs
- UnknownWrapper.cs
- CommonBehaviorsSection.cs
- CustomAttributeFormatException.cs
- SelectionWordBreaker.cs
- StorageRoot.cs
- BrowserCapabilitiesFactory35.cs
- XmlTypeMapping.cs
- ControlValuePropertyAttribute.cs
- EnumConverter.cs
- TriggerAction.cs
- SamlSubject.cs
- XamlSerializerUtil.cs
- DBSchemaTable.cs
- WebReferencesBuildProvider.cs
- ConsoleTraceListener.cs
- DBDataPermissionAttribute.cs
- EventLogEntry.cs
- HttpServerVarsCollection.cs
- TextSchema.cs
- SessionPageStatePersister.cs
- AnnotationStore.cs
- StringAnimationBase.cs
- VariantWrapper.cs
- DriveNotFoundException.cs
- AttachedPropertyBrowsableAttribute.cs
- ServiceTimeoutsElement.cs
- FilterEventArgs.cs
- TextComposition.cs
- CompilationUnit.cs
- ISessionStateStore.cs
- Compiler.cs
- DesignerAdRotatorAdapter.cs
- AutoCompleteStringCollection.cs
- SafeSecurityHandles.cs
- XmlSchemaAll.cs
- Point.cs
- StandardToolWindows.cs
- ToolStripPanel.cs
- DoubleMinMaxAggregationOperator.cs
- RepeatBehaviorConverter.cs
- FormViewInsertedEventArgs.cs
- ProfilePropertyMetadata.cs
- ObjectSet.cs
- DockAndAnchorLayout.cs
- XPathDocument.cs
- FunctionMappingTranslator.cs
- SparseMemoryStream.cs
- SqlUdtInfo.cs
- XmlIlTypeHelper.cs
- ExecutedRoutedEventArgs.cs
- Schema.cs
- AxHost.cs
- TypedReference.cs
- XmlSchemaAttributeGroup.cs
- OdbcParameter.cs
- RequestCacheValidator.cs
- ParseHttpDate.cs
- BinaryWriter.cs
- XmlLanguage.cs
- RightsManagementErrorHandler.cs
- DataStreamFromComStream.cs
- BindingContext.cs
- EnumBuilder.cs
- CodeIdentifiers.cs
- ToolStripGripRenderEventArgs.cs
- RegexRunnerFactory.cs
- Rectangle.cs
- PrefixHandle.cs
- LogManagementAsyncResult.cs