Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / whidbey / netfxsp / 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;
///
///
/// This is a rendering class for the CheckBox control. It works downlevel too (obviously
/// without visual styles applied.)
///
///
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() {
}
///
///
/// 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 RenderMatchingApplicationState {
get {
return renderMatchingApplicationState;
}
set {
renderMatchingApplicationState = value;
}
}
private static bool RenderWithVisualStyles {
get {
return (!renderMatchingApplicationState || Application.RenderWithVisualStyles);
}
}
///
///
/// Returns true if the background corresponding to the given state is partially transparent, else false.
///
///
public static bool IsBackgroundPartiallyTransparent(CheckBoxState state) {
if (RenderWithVisualStyles) {
InitializeRenderer((int)state);
return visualStyleRenderer.IsBackgroundPartiallyTransparent();
}
else {
return false; //for downlevel, this is false
}
}
///
///
/// This is just a convenience wrapper for VisualStyleRenderer.DrawThemeParentBackground. For downlevel,
/// this isn't required and does nothing.
///
///
[
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);
}
}
///
///
/// Renders a CheckBox control.
///
///
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);
}
}
///
///
/// Returns the size of the CheckBox glyph.
///
///
[
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.
//------------------------------------------------------------------------------
//
// 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;
///
///
/// This is a rendering class for the CheckBox control. It works downlevel too (obviously
/// without visual styles applied.)
///
///
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() {
}
///
///
/// 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 RenderMatchingApplicationState {
get {
return renderMatchingApplicationState;
}
set {
renderMatchingApplicationState = value;
}
}
private static bool RenderWithVisualStyles {
get {
return (!renderMatchingApplicationState || Application.RenderWithVisualStyles);
}
}
///
///
/// Returns true if the background corresponding to the given state is partially transparent, else false.
///
///
public static bool IsBackgroundPartiallyTransparent(CheckBoxState state) {
if (RenderWithVisualStyles) {
InitializeRenderer((int)state);
return visualStyleRenderer.IsBackgroundPartiallyTransparent();
}
else {
return false; //for downlevel, this is false
}
}
///
///
/// This is just a convenience wrapper for VisualStyleRenderer.DrawThemeParentBackground. For downlevel,
/// this isn't required and does nothing.
///
///
[
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);
}
}
///
///
/// Renders a CheckBox control.
///
///
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);
}
}
///
///
/// Returns the size of the CheckBox glyph.
///
///
[
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.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- HijriCalendar.cs
- DataSetUtil.cs
- WithParamAction.cs
- WorkerRequest.cs
- LineBreak.cs
- ChangePassword.cs
- Size.cs
- QilVisitor.cs
- DrawingAttributes.cs
- PolicyChain.cs
- TableLayoutSettings.cs
- TextServicesPropertyRanges.cs
- Html32TextWriter.cs
- KernelTypeValidation.cs
- WebPartDisplayModeCollection.cs
- CharEntityEncoderFallback.cs
- PinnedBufferMemoryStream.cs
- ImageMap.cs
- FlowDocumentPaginator.cs
- SchemaNames.cs
- ProcessModuleCollection.cs
- Imaging.cs
- ManagementClass.cs
- Image.cs
- ScaleTransform.cs
- ContentDisposition.cs
- SqlRowUpdatingEvent.cs
- ClientProtocol.cs
- StylusEventArgs.cs
- RepeaterDesigner.cs
- OletxEnlistment.cs
- SchemaDeclBase.cs
- ServiceThrottlingBehavior.cs
- KnownTypes.cs
- EpmCustomContentSerializer.cs
- SignatureDescription.cs
- DBCSCodePageEncoding.cs
- Debug.cs
- BamlRecordHelper.cs
- XmlSchemaSimpleContent.cs
- InputReport.cs
- ECDiffieHellmanCng.cs
- DbgCompiler.cs
- XMLUtil.cs
- ProjectionPlan.cs
- IntegerValidator.cs
- SignedXml.cs
- RoutedEvent.cs
- DependencyObjectCodeDomSerializer.cs
- WorkflowMarkupSerializationProvider.cs
- SQLMembershipProvider.cs
- ImageBrush.cs
- SelectionManager.cs
- DataContract.cs
- AggregateException.cs
- Thumb.cs
- ExpandCollapsePattern.cs
- SecurityPolicySection.cs
- DefaultShape.cs
- IndexedSelectQueryOperator.cs
- categoryentry.cs
- TraceListeners.cs
- XPathMultyIterator.cs
- AppDomainAttributes.cs
- OutputCacheProfile.cs
- FileEnumerator.cs
- HwndSource.cs
- ProcessManager.cs
- NextPreviousPagerField.cs
- NavigationCommands.cs
- XmlBoundElement.cs
- ProfileBuildProvider.cs
- ProfileGroupSettingsCollection.cs
- ResourcePool.cs
- EntityDataReader.cs
- LogEntryHeaderDeserializer.cs
- ToggleButtonAutomationPeer.cs
- MSAAEventDispatcher.cs
- SequentialOutput.cs
- CommandBindingCollection.cs
- XmlDictionaryReaderQuotas.cs
- DataGridViewAddColumnDialog.cs
- SignedXml.cs
- TextSimpleMarkerProperties.cs
- ToolStrip.cs
- PeerNameRegistration.cs
- CornerRadiusConverter.cs
- COM2IDispatchConverter.cs
- CustomExpressionEventArgs.cs
- NameSpaceEvent.cs
- FileClassifier.cs
- HtmlTable.cs
- DisplayInformation.cs
- FontEditor.cs
- ThrowHelper.cs
- NativeMethods.cs
- ObjectAnimationBase.cs
- CompositeActivityMarkupSerializer.cs
- SystemTcpConnection.cs
- metadatamappinghashervisitor.cs