Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / whidbey / NetFXspW7 / ndp / fx / src / CommonUI / System / Drawing / SizeConverter.cs / 1 / SizeConverter.cs
//------------------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//-----------------------------------------------------------------------------
/*
*/
namespace System.Drawing {
using System.Runtime.Serialization.Formatters;
using System.Runtime.InteropServices;
using System.Diagnostics;
using System.Diagnostics.CodeAnalysis;
using Microsoft.Win32;
using System.Collections;
using System.ComponentModel;
using System.ComponentModel.Design.Serialization;
using System.Globalization;
using System.Reflection;
///
/// SizeConverter is a class that can be used to convert
/// Size from one data type to another. Access this
/// class through the TypeDescriptor.
///
public class SizeConverter : TypeConverter {
///
/// Determines if this converter can convert an object in the given source
/// type to the native type of the converter.
///
public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType) {
if (sourceType == typeof(string)) {
return true;
}
return base.CanConvertFrom(context, sourceType);
}
///
/// Gets a value indicating whether this converter can
/// convert an object to the given destination type using the context.
///
public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType) {
if (destinationType == typeof(InstanceDescriptor)) {
return true;
}
return base.CanConvertTo(context, destinationType);
}
///
/// Converts the given object to the converter's native type.
///
[SuppressMessage("Microsoft.Performance", "CA1808:AvoidCallsThatBoxValueTypes")]
public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value) {
string strValue = value as string;
if (strValue != null) {
string text = strValue.Trim();
if (text.Length == 0) {
return null;
}
else {
// Parse 2 integer values.
//
if (culture == null) {
culture = CultureInfo.CurrentCulture;
}
char sep = culture.TextInfo.ListSeparator[0];
string[] tokens = text.Split(new char[] {sep});
int[] values = new int[tokens.Length];
TypeConverter intConverter = TypeDescriptor.GetConverter(typeof(int));
for (int i = 0; i < values.Length; i++) {
// Note: ConvertFromString will raise exception if value cannot be converted.
values[i] = (int)intConverter.ConvertFromString(context, culture, tokens[i]);
}
if (values.Length == 2) {
return new Size(values[0], values[1]);
}
else {
throw new ArgumentException(SR.GetString(SR.TextParseFailedFormat,
text,
"Width,Height"));
}
}
}
return base.ConvertFrom(context, culture, value);
}
///
/// Converts the given object to another type. The most common types to convert
/// are to and from a string object. The default implementation will make a call
/// to ToString on the object if the object is valid and if the destination
/// type is string. If this cannot convert to the desitnation type, this will
/// throw a NotSupportedException.
///
public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) {
if (destinationType == null) {
throw new ArgumentNullException("destinationType");
}
if(value is Size){
if (destinationType == typeof(string)) {
Size size = (Size)value;
if (culture == null) {
culture = CultureInfo.CurrentCulture;
}
string sep = culture.TextInfo.ListSeparator + " ";
TypeConverter intConverter = TypeDescriptor.GetConverter(typeof(int));
string[] args = new string[2];
int nArg = 0;
// Note: ConvertToString will raise exception if value cannot be converted.
args[nArg++] = intConverter.ConvertToString(context, culture, size.Width);
args[nArg++] = intConverter.ConvertToString(context, culture, size.Height);
return string.Join(sep, args);
}
if (destinationType == typeof(InstanceDescriptor)) {
Size size = (Size)value;
ConstructorInfo ctor = typeof(Size).GetConstructor(new Type[] {typeof(int), typeof(int)});
if (ctor != null) {
return new InstanceDescriptor(ctor, new object[] {size.Width, size.Height});
}
}
}
return base.ConvertTo(context, culture, value, destinationType);
}
///
/// Creates an instance of this type given a set of property values
/// for the object. This is useful for objects that are immutable, but still
/// want to provide changable properties.
///
[SuppressMessage("Microsoft.Performance", "CA1808:AvoidCallsThatBoxValueTypes")]
[SuppressMessage("Microsoft.Security", "CA2102:CatchNonClsCompliantExceptionsInGeneralHandlers")]
public override object CreateInstance(ITypeDescriptorContext context, IDictionary propertyValues) {
if( propertyValues == null ){
throw new ArgumentNullException( "propertyValues" );
}
object width = propertyValues["Width"];
object height = propertyValues["Height"];
if(width == null || height == null ||
!(width is int) || !(height is int)) {
throw new ArgumentException(SR.GetString(SR.PropertyValueInvalidEntry));
}
return new Size((int)width,
(int)height);
}
///
/// Determines if changing a value on this object should require a call to
/// CreateInstance to create a new value.
///
public override bool GetCreateInstanceSupported(ITypeDescriptorContext context) {
return true;
}
///
/// Retrieves the set of properties for this type. By default, a type has
/// does not return any properties. An easy implementation of this method
/// can just call TypeDescriptor.GetProperties for the correct data type.
///
public override PropertyDescriptorCollection GetProperties(ITypeDescriptorContext context, object value, Attribute[] attributes) {
PropertyDescriptorCollection props = TypeDescriptor.GetProperties(typeof(Size), attributes);
return props.Sort(new string[] {"Width", "Height"});
}
///
/// Determines if this object supports properties. By default, this
/// is false.
///
public override bool GetPropertiesSupported(ITypeDescriptorContext context) {
return true;
}
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
//------------------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//-----------------------------------------------------------------------------
/*
*/
namespace System.Drawing {
using System.Runtime.Serialization.Formatters;
using System.Runtime.InteropServices;
using System.Diagnostics;
using System.Diagnostics.CodeAnalysis;
using Microsoft.Win32;
using System.Collections;
using System.ComponentModel;
using System.ComponentModel.Design.Serialization;
using System.Globalization;
using System.Reflection;
///
/// SizeConverter is a class that can be used to convert
/// Size from one data type to another. Access this
/// class through the TypeDescriptor.
///
public class SizeConverter : TypeConverter {
///
/// Determines if this converter can convert an object in the given source
/// type to the native type of the converter.
///
public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType) {
if (sourceType == typeof(string)) {
return true;
}
return base.CanConvertFrom(context, sourceType);
}
///
/// Gets a value indicating whether this converter can
/// convert an object to the given destination type using the context.
///
public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType) {
if (destinationType == typeof(InstanceDescriptor)) {
return true;
}
return base.CanConvertTo(context, destinationType);
}
///
/// Converts the given object to the converter's native type.
///
[SuppressMessage("Microsoft.Performance", "CA1808:AvoidCallsThatBoxValueTypes")]
public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value) {
string strValue = value as string;
if (strValue != null) {
string text = strValue.Trim();
if (text.Length == 0) {
return null;
}
else {
// Parse 2 integer values.
//
if (culture == null) {
culture = CultureInfo.CurrentCulture;
}
char sep = culture.TextInfo.ListSeparator[0];
string[] tokens = text.Split(new char[] {sep});
int[] values = new int[tokens.Length];
TypeConverter intConverter = TypeDescriptor.GetConverter(typeof(int));
for (int i = 0; i < values.Length; i++) {
// Note: ConvertFromString will raise exception if value cannot be converted.
values[i] = (int)intConverter.ConvertFromString(context, culture, tokens[i]);
}
if (values.Length == 2) {
return new Size(values[0], values[1]);
}
else {
throw new ArgumentException(SR.GetString(SR.TextParseFailedFormat,
text,
"Width,Height"));
}
}
}
return base.ConvertFrom(context, culture, value);
}
///
/// Converts the given object to another type. The most common types to convert
/// are to and from a string object. The default implementation will make a call
/// to ToString on the object if the object is valid and if the destination
/// type is string. If this cannot convert to the desitnation type, this will
/// throw a NotSupportedException.
///
public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) {
if (destinationType == null) {
throw new ArgumentNullException("destinationType");
}
if(value is Size){
if (destinationType == typeof(string)) {
Size size = (Size)value;
if (culture == null) {
culture = CultureInfo.CurrentCulture;
}
string sep = culture.TextInfo.ListSeparator + " ";
TypeConverter intConverter = TypeDescriptor.GetConverter(typeof(int));
string[] args = new string[2];
int nArg = 0;
// Note: ConvertToString will raise exception if value cannot be converted.
args[nArg++] = intConverter.ConvertToString(context, culture, size.Width);
args[nArg++] = intConverter.ConvertToString(context, culture, size.Height);
return string.Join(sep, args);
}
if (destinationType == typeof(InstanceDescriptor)) {
Size size = (Size)value;
ConstructorInfo ctor = typeof(Size).GetConstructor(new Type[] {typeof(int), typeof(int)});
if (ctor != null) {
return new InstanceDescriptor(ctor, new object[] {size.Width, size.Height});
}
}
}
return base.ConvertTo(context, culture, value, destinationType);
}
///
/// Creates an instance of this type given a set of property values
/// for the object. This is useful for objects that are immutable, but still
/// want to provide changable properties.
///
[SuppressMessage("Microsoft.Performance", "CA1808:AvoidCallsThatBoxValueTypes")]
[SuppressMessage("Microsoft.Security", "CA2102:CatchNonClsCompliantExceptionsInGeneralHandlers")]
public override object CreateInstance(ITypeDescriptorContext context, IDictionary propertyValues) {
if( propertyValues == null ){
throw new ArgumentNullException( "propertyValues" );
}
object width = propertyValues["Width"];
object height = propertyValues["Height"];
if(width == null || height == null ||
!(width is int) || !(height is int)) {
throw new ArgumentException(SR.GetString(SR.PropertyValueInvalidEntry));
}
return new Size((int)width,
(int)height);
}
///
/// Determines if changing a value on this object should require a call to
/// CreateInstance to create a new value.
///
public override bool GetCreateInstanceSupported(ITypeDescriptorContext context) {
return true;
}
///
/// Retrieves the set of properties for this type. By default, a type has
/// does not return any properties. An easy implementation of this method
/// can just call TypeDescriptor.GetProperties for the correct data type.
///
public override PropertyDescriptorCollection GetProperties(ITypeDescriptorContext context, object value, Attribute[] attributes) {
PropertyDescriptorCollection props = TypeDescriptor.GetProperties(typeof(Size), attributes);
return props.Sort(new string[] {"Width", "Height"});
}
///
/// Determines if this object supports properties. By default, this
/// is false.
///
public override bool GetPropertiesSupported(ITypeDescriptorContext context) {
return true;
}
}
}
// 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
- RenderCapability.cs
- UmAlQuraCalendar.cs
- TableAdapterManagerHelper.cs
- DynamicResourceExtensionConverter.cs
- ReversePositionQuery.cs
- DataGridViewCellCollection.cs
- SQLCharsStorage.cs
- DynamicRendererThreadManager.cs
- DataPagerFieldItem.cs
- CompoundFileIOPermission.cs
- ProfileManager.cs
- PriorityItem.cs
- TextViewSelectionProcessor.cs
- EventLogLink.cs
- ConfigViewGenerator.cs
- XmlChildNodes.cs
- Timer.cs
- DataGridColumn.cs
- Image.cs
- BuildManagerHost.cs
- ObjectCloneHelper.cs
- WorkflowWebHostingModule.cs
- VScrollProperties.cs
- COM2FontConverter.cs
- ByteRangeDownloader.cs
- UpDownEvent.cs
- SQLBinaryStorage.cs
- DNS.cs
- InitializingNewItemEventArgs.cs
- Sentence.cs
- InternalUserCancelledException.cs
- PropertyTabAttribute.cs
- AxisAngleRotation3D.cs
- CheckBox.cs
- DocobjHost.cs
- FixedSOMTextRun.cs
- CLRBindingWorker.cs
- WsdlInspector.cs
- BoundColumn.cs
- DeploymentExceptionMapper.cs
- InstanceDataCollection.cs
- ProxyManager.cs
- HtmlLink.cs
- CfgArc.cs
- InputLangChangeEvent.cs
- Label.cs
- FormatterServices.cs
- ManualResetEvent.cs
- ArraySegment.cs
- SchemaImporter.cs
- bindurihelper.cs
- DodSequenceMerge.cs
- ReadOnlyTernaryTree.cs
- IIS7UserPrincipal.cs
- SemaphoreSecurity.cs
- ColumnReorderedEventArgs.cs
- DetailsViewInsertedEventArgs.cs
- Soap.cs
- BinarySecretSecurityToken.cs
- SocketElement.cs
- XmlResolver.cs
- AccessDataSource.cs
- OrderByQueryOptionExpression.cs
- Utils.cs
- GridViewColumnHeaderAutomationPeer.cs
- WorkflowViewElement.cs
- RotationValidation.cs
- MessageQueuePermissionEntryCollection.cs
- DebugView.cs
- SafeFileMappingHandle.cs
- XmlNodeChangedEventArgs.cs
- PrintControllerWithStatusDialog.cs
- XPathException.cs
- MailWriter.cs
- ToolStripItemClickedEventArgs.cs
- HttpModulesSection.cs
- BinaryMethodMessage.cs
- EventManager.cs
- XmlHierarchicalDataSourceView.cs
- OdbcCommand.cs
- ProgressBar.cs
- SimpleBitVector32.cs
- ErrorStyle.cs
- COAUTHIDENTITY.cs
- XmlCharCheckingWriter.cs
- ComEventsHelper.cs
- Cursor.cs
- ModelItemKeyValuePair.cs
- RSAPKCS1KeyExchangeFormatter.cs
- TextContainerChangedEventArgs.cs
- CustomExpressionEventArgs.cs
- SelectionProcessor.cs
- PagesSection.cs
- XmlSchemaSimpleTypeList.cs
- GroupBoxRenderer.cs
- ApplicationActivator.cs
- GroupStyle.cs
- Stopwatch.cs
- DataSet.cs
- CompositeKey.cs