Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / whidbey / NetFXspW7 / ndp / fx / src / xsp / System / Web / UI / WebControls / Unit.cs / 1 / Unit.cs
//------------------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//-----------------------------------------------------------------------------
namespace System.Web.UI.WebControls {
using System;
using System.Globalization;
using System.ComponentModel;
using System.ComponentModel.Design;
using System.Security.Permissions;
using System.Web.Util;
[
TypeConverterAttribute(typeof(UnitConverter))
]
[Serializable]
public struct Unit {
///
/// Specifies an empty unit.
///
public static readonly Unit Empty = new Unit();
internal const int MaxValue = 32767;
internal const int MinValue = -32768;
private readonly UnitType type;
private readonly double value;
///
/// Initializes a new instance of the
///
public Unit(int value) {
if ((value < MinValue) || (value > MaxValue)) {
throw new ArgumentOutOfRangeException("value");
}
this.value = value;
this.type = UnitType.Pixel;
}
///
/// Initializes a new instance of the
///
public Unit(double value) {
if ((value < MinValue) || (value > MaxValue)) {
throw new ArgumentOutOfRangeException("value");
}
this.value = (int)value;
this.type = UnitType.Pixel;
}
///
/// Initializes a new instance of the
///
public Unit(double value, UnitType type) {
if ((value < MinValue) || (value > MaxValue)) {
throw new ArgumentOutOfRangeException("value");
}
if (type == UnitType.Pixel) {
this.value = (int)value;
}
else {
this.value = value;
}
this.type = type;
}
///
/// Initializes a new instance of the
///
public Unit(string value) : this(value, CultureInfo.CurrentCulture, UnitType.Pixel) {
}
///
/// [To be supplied.]
///
public Unit(string value, CultureInfo culture) : this(value, culture, UnitType.Pixel) {
}
internal Unit(string value, CultureInfo culture, UnitType defaultType) {
if (String.IsNullOrEmpty(value)) {
this.value = 0;
this.type = (UnitType)0;
}
else {
if (culture == null) {
culture = CultureInfo.CurrentCulture;
}
// This is invariant because it acts like an enum with a number together.
// The enum part is invariant, but the number uses current culture.
string trimLcase = value.Trim().ToLower(CultureInfo.InvariantCulture);
int len = trimLcase.Length;
int lastDigit = -1;
for (int i = 0; i < len; i++) {
char ch = trimLcase[i];
if (((ch < '0') || (ch > '9')) && (ch != '-') && (ch != '.') && (ch != ','))
break;
lastDigit = i;
}
if (lastDigit == -1) {
throw new FormatException(SR.GetString(SR.UnitParseNoDigits, value));
}
if (lastDigit < len - 1) {
type = (UnitType)GetTypeFromString(trimLcase.Substring(lastDigit+1).Trim());
}
else {
type = defaultType;
}
string numericPart = trimLcase.Substring(0, lastDigit+1);
// Cannot use Double.FromString, because we don't use it in the ToString implementation
try {
TypeConverter converter = new SingleConverter();
this.value = (Single)converter.ConvertFromString(null, culture, numericPart);
if (type == UnitType.Pixel) {
this.value = (int)this.value;
}
}
catch {
throw new FormatException(SR.GetString(SR.UnitParseNumericPart, value, numericPart, type.ToString("G")));
}
if ((this.value < MinValue) || (this.value > MaxValue)) {
throw new ArgumentOutOfRangeException("value");
}
}
}
///
/// Gets a value indicating whether the
///
public bool IsEmpty {
get {
return type == (UnitType)0;
}
}
///
/// Gets or sets the type of the
///
public UnitType Type {
get {
if (!IsEmpty) {
return this.type;
}
else {
return UnitType.Pixel;
}
}
}
///
/// Gets the value of the
///
public double Value {
get {
return this.value;
}
}
///
/// [To be supplied.]
///
public override int GetHashCode() {
return HashCodeCombiner.CombineHashCodes(type.GetHashCode(), value.GetHashCode());
}
///
/// Compares this
///
public override bool Equals(object obj) {
if (obj == null || !(obj is Unit)) {
return false;
}
Unit u = (Unit)obj;
// compare internal values to avoid "defaulting" in the case of "Empty"
//
if (u.type == type && u.value == value) {
return true;
}
return false;
}
///
/// Compares two units to find out if they have the same value and type.
///
public static bool operator ==(Unit left, Unit right) {
// compare internal values to avoid "defaulting" in the case of "Empty"
//
return (left.type == right.type && left.value == right.value);
}
///
/// Compares two units to find out if they have different
/// values and/or types.
///
public static bool operator !=(Unit left, Unit right) {
// compare internal values to avoid "defaulting" in the case of "Empty"
//
return (left.type != right.type || left.value != right.value);
}
///
/// Converts UnitType to persistence string.
///
private static string GetStringFromType(UnitType type) {
switch (type) {
case UnitType.Pixel:
return "px";
case UnitType.Point:
return "pt";
case UnitType.Pica:
return "pc";
case UnitType.Inch:
return "in";
case UnitType.Mm:
return "mm";
case UnitType.Cm:
return "cm";
case UnitType.Percentage:
return "%";
case UnitType.Em:
return "em";
case UnitType.Ex:
return "ex";
}
return String.Empty;
}
///
/// Converts persistence string to UnitType.
///
private static UnitType GetTypeFromString(string value) {
if (!String.IsNullOrEmpty(value)) {
if (value.Equals("px")) {
return UnitType.Pixel;
}
else if (value.Equals("pt")) {
return UnitType.Point;
}
else if (value.Equals("%")) {
return UnitType.Percentage;
}
else if (value.Equals("pc")) {
return UnitType.Pica;
}
else if (value.Equals("in")) {
return UnitType.Inch;
}
else if (value.Equals("mm")) {
return UnitType.Mm;
}
else if (value.Equals("cm")) {
return UnitType.Cm;
}
else if (value.Equals("em")) {
return UnitType.Em;
}
else if (value.Equals("ex")) {
return UnitType.Ex;
}
else {
throw new ArgumentOutOfRangeException("value");
}
}
return UnitType.Pixel;
}
///
/// [To be supplied.]
///
public static Unit Parse(string s) {
return new Unit(s, CultureInfo.CurrentCulture);
}
///
/// [To be supplied.]
///
public static Unit Parse(string s, CultureInfo culture) {
return new Unit(s, culture);
}
///
/// Creates a
///
public static Unit Percentage(double n) {
return new Unit(n,UnitType.Percentage);
}
///
/// Creates a
///
public static Unit Pixel(int n) {
return new Unit(n);
}
///
/// Creates a
///
public static Unit Point(int n) {
return new Unit(n,UnitType.Point);
}
///
/// Converts a
///
public override string ToString() {
return ToString((IFormatProvider)CultureInfo.CurrentCulture);
}
public string ToString(CultureInfo culture) {
return ToString((IFormatProvider)culture);
}
public string ToString(IFormatProvider formatProvider) {
if (IsEmpty)
return String.Empty;
// Double.ToString does not do the right thing, we get extra bits at the end
string valuePart;
if (type == UnitType.Pixel) {
valuePart = ((int)value).ToString(formatProvider);
}
else {
valuePart = ((float)value).ToString(formatProvider);
}
return valuePart + Unit.GetStringFromType(type);
}
///
/// Implicitly creates a
///
public static implicit operator Unit(int n) {
return Unit.Pixel(n);
}
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
//------------------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//-----------------------------------------------------------------------------
namespace System.Web.UI.WebControls {
using System;
using System.Globalization;
using System.ComponentModel;
using System.ComponentModel.Design;
using System.Security.Permissions;
using System.Web.Util;
[
TypeConverterAttribute(typeof(UnitConverter))
]
[Serializable]
public struct Unit {
///
/// Specifies an empty unit.
///
public static readonly Unit Empty = new Unit();
internal const int MaxValue = 32767;
internal const int MinValue = -32768;
private readonly UnitType type;
private readonly double value;
///
/// Initializes a new instance of the
///
public Unit(int value) {
if ((value < MinValue) || (value > MaxValue)) {
throw new ArgumentOutOfRangeException("value");
}
this.value = value;
this.type = UnitType.Pixel;
}
///
/// Initializes a new instance of the
///
public Unit(double value) {
if ((value < MinValue) || (value > MaxValue)) {
throw new ArgumentOutOfRangeException("value");
}
this.value = (int)value;
this.type = UnitType.Pixel;
}
///
/// Initializes a new instance of the
///
public Unit(double value, UnitType type) {
if ((value < MinValue) || (value > MaxValue)) {
throw new ArgumentOutOfRangeException("value");
}
if (type == UnitType.Pixel) {
this.value = (int)value;
}
else {
this.value = value;
}
this.type = type;
}
///
/// Initializes a new instance of the
///
public Unit(string value) : this(value, CultureInfo.CurrentCulture, UnitType.Pixel) {
}
///
/// [To be supplied.]
///
public Unit(string value, CultureInfo culture) : this(value, culture, UnitType.Pixel) {
}
internal Unit(string value, CultureInfo culture, UnitType defaultType) {
if (String.IsNullOrEmpty(value)) {
this.value = 0;
this.type = (UnitType)0;
}
else {
if (culture == null) {
culture = CultureInfo.CurrentCulture;
}
// This is invariant because it acts like an enum with a number together.
// The enum part is invariant, but the number uses current culture.
string trimLcase = value.Trim().ToLower(CultureInfo.InvariantCulture);
int len = trimLcase.Length;
int lastDigit = -1;
for (int i = 0; i < len; i++) {
char ch = trimLcase[i];
if (((ch < '0') || (ch > '9')) && (ch != '-') && (ch != '.') && (ch != ','))
break;
lastDigit = i;
}
if (lastDigit == -1) {
throw new FormatException(SR.GetString(SR.UnitParseNoDigits, value));
}
if (lastDigit < len - 1) {
type = (UnitType)GetTypeFromString(trimLcase.Substring(lastDigit+1).Trim());
}
else {
type = defaultType;
}
string numericPart = trimLcase.Substring(0, lastDigit+1);
// Cannot use Double.FromString, because we don't use it in the ToString implementation
try {
TypeConverter converter = new SingleConverter();
this.value = (Single)converter.ConvertFromString(null, culture, numericPart);
if (type == UnitType.Pixel) {
this.value = (int)this.value;
}
}
catch {
throw new FormatException(SR.GetString(SR.UnitParseNumericPart, value, numericPart, type.ToString("G")));
}
if ((this.value < MinValue) || (this.value > MaxValue)) {
throw new ArgumentOutOfRangeException("value");
}
}
}
///
/// Gets a value indicating whether the
///
public bool IsEmpty {
get {
return type == (UnitType)0;
}
}
///
/// Gets or sets the type of the
///
public UnitType Type {
get {
if (!IsEmpty) {
return this.type;
}
else {
return UnitType.Pixel;
}
}
}
///
/// Gets the value of the
///
public double Value {
get {
return this.value;
}
}
///
/// [To be supplied.]
///
public override int GetHashCode() {
return HashCodeCombiner.CombineHashCodes(type.GetHashCode(), value.GetHashCode());
}
///
/// Compares this
///
public override bool Equals(object obj) {
if (obj == null || !(obj is Unit)) {
return false;
}
Unit u = (Unit)obj;
// compare internal values to avoid "defaulting" in the case of "Empty"
//
if (u.type == type && u.value == value) {
return true;
}
return false;
}
///
/// Compares two units to find out if they have the same value and type.
///
public static bool operator ==(Unit left, Unit right) {
// compare internal values to avoid "defaulting" in the case of "Empty"
//
return (left.type == right.type && left.value == right.value);
}
///
/// Compares two units to find out if they have different
/// values and/or types.
///
public static bool operator !=(Unit left, Unit right) {
// compare internal values to avoid "defaulting" in the case of "Empty"
//
return (left.type != right.type || left.value != right.value);
}
///
/// Converts UnitType to persistence string.
///
private static string GetStringFromType(UnitType type) {
switch (type) {
case UnitType.Pixel:
return "px";
case UnitType.Point:
return "pt";
case UnitType.Pica:
return "pc";
case UnitType.Inch:
return "in";
case UnitType.Mm:
return "mm";
case UnitType.Cm:
return "cm";
case UnitType.Percentage:
return "%";
case UnitType.Em:
return "em";
case UnitType.Ex:
return "ex";
}
return String.Empty;
}
///
/// Converts persistence string to UnitType.
///
private static UnitType GetTypeFromString(string value) {
if (!String.IsNullOrEmpty(value)) {
if (value.Equals("px")) {
return UnitType.Pixel;
}
else if (value.Equals("pt")) {
return UnitType.Point;
}
else if (value.Equals("%")) {
return UnitType.Percentage;
}
else if (value.Equals("pc")) {
return UnitType.Pica;
}
else if (value.Equals("in")) {
return UnitType.Inch;
}
else if (value.Equals("mm")) {
return UnitType.Mm;
}
else if (value.Equals("cm")) {
return UnitType.Cm;
}
else if (value.Equals("em")) {
return UnitType.Em;
}
else if (value.Equals("ex")) {
return UnitType.Ex;
}
else {
throw new ArgumentOutOfRangeException("value");
}
}
return UnitType.Pixel;
}
///
/// [To be supplied.]
///
public static Unit Parse(string s) {
return new Unit(s, CultureInfo.CurrentCulture);
}
///
/// [To be supplied.]
///
public static Unit Parse(string s, CultureInfo culture) {
return new Unit(s, culture);
}
///
/// Creates a
///
public static Unit Percentage(double n) {
return new Unit(n,UnitType.Percentage);
}
///
/// Creates a
///
public static Unit Pixel(int n) {
return new Unit(n);
}
///
/// Creates a
///
public static Unit Point(int n) {
return new Unit(n,UnitType.Point);
}
///
/// Converts a
///
public override string ToString() {
return ToString((IFormatProvider)CultureInfo.CurrentCulture);
}
public string ToString(CultureInfo culture) {
return ToString((IFormatProvider)culture);
}
public string ToString(IFormatProvider formatProvider) {
if (IsEmpty)
return String.Empty;
// Double.ToString does not do the right thing, we get extra bits at the end
string valuePart;
if (type == UnitType.Pixel) {
valuePart = ((int)value).ToString(formatProvider);
}
else {
valuePart = ((float)value).ToString(formatProvider);
}
return valuePart + Unit.GetStringFromType(type);
}
///
/// Implicitly creates a
///
public static implicit operator Unit(int n) {
return Unit.Pixel(n);
}
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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