FontInfo.cs source code in C# .NET

                        Code:
                         / DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / UI / WebControls / FontInfo.cs / 1 / FontInfo.cs
                        
                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

namespace System.Web.UI.WebControls { 
 
    using System.ComponentModel.Design;
    using System; 
    using System.ComponentModel;
    using System.Collections;
    using System.Drawing;
    using System.Drawing.Design; 
    using System.Globalization;
    using System.Web; 
    using System.Security.Permissions; 

 
    /// 
    ///    Represents the font properties for text. This class cannot be inherited.
    /// 
    [ 
        TypeConverterAttribute(typeof(ExpandableObjectConverter))
    ] 
    [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] 
    public sealed class FontInfo {
 
        private Style owner;


        ///  
        /// 
        internal FontInfo(Style owner) { 
            this.owner = owner; 
        }
 

        /// 
        ///    Indicates whether the text is bold.
        ///  
        [
            WebCategory("Appearance"), 
            DefaultValue(false), 
            WebSysDescription(SR.FontInfo_Bold),
            NotifyParentProperty(true) 
        ]
        public bool Bold {
            get {
                if (owner.IsSet(Style.PROP_FONT_BOLD)) { 
                    return (bool)(owner.ViewState["Font_Bold"]);
                } 
                return false; 
            }
            set { 
                owner.ViewState["Font_Bold"] = value;
                owner.SetBit(Style.PROP_FONT_BOLD);
            }
        } 

 
        ///  
        ///    Indicates whether the text is italic.
        ///  
        [
            WebCategory("Appearance"),
            DefaultValue(false),
            WebSysDescription(SR.FontInfo_Italic), 
            NotifyParentProperty(true)
        ] 
        public bool Italic { 
            get {
                if (owner.IsSet(Style.PROP_FONT_ITALIC)) { 
                    return (bool)(owner.ViewState["Font_Italic"]);
                }
                return false;
            } 
            set {
                owner.ViewState["Font_Italic"] = value; 
                owner.SetBit(Style.PROP_FONT_ITALIC); 
            }
        } 


        /// 
        ///    Indicates the name of the font. 
        /// 
        [ 
            Editor("System.Drawing.Design.FontNameEditor, " + AssemblyRef.SystemDrawingDesign, typeof(UITypeEditor)), 
            TypeConverterAttribute(typeof(FontConverter.FontNameConverter)),
            WebCategory("Appearance"), 
            DefaultValue(""),
            WebSysDescription(SR.FontInfo_Name),
            NotifyParentProperty(true),
            RefreshProperties(RefreshProperties.Repaint), 
            DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
        ] 
        public string Name { 
            get {
                string[] names = Names; 
                if (names.Length > 0)
                    return names[0];
                return String.Empty;
            } 
            set {
                if (value == null) 
                    throw new ArgumentNullException("value"); 

                if (value.Length == 0) { 
                    Names = null;
                }
                else {
                    Names = new string[1] { value }; 
                }
            } 
        } 

 
        /// 
        /// 
        [
            TypeConverterAttribute(typeof(FontNamesConverter)), 
            WebCategory("Appearance"),
            Editor("System.Windows.Forms.Design.StringArrayEditor, " + AssemblyRef.SystemDesign, typeof(UITypeEditor)), 
            WebSysDescription(SR.FontInfo_Names), 
            RefreshProperties(RefreshProperties.Repaint),
            NotifyParentProperty(true) 
        ]
        public string[] Names {
            get {
                if (owner.IsSet(Style.PROP_FONT_NAMES)) { 
                    string[] names = (string[])owner.ViewState["Font_Names"];
                    if (names != null) 
                        return names; 
                }
                return new string[0]; 
            }
            set {
                owner.ViewState["Font_Names"] = value;
                owner.SetBit(Style.PROP_FONT_NAMES); 
            }
        } 
 

        ///  
        ///    Indicates whether the text is overline.
        /// 
        [
            WebCategory("Appearance"), 
            DefaultValue(false),
            WebSysDescription(SR.FontInfo_Overline), 
            NotifyParentProperty(true) 
        ]
        public bool Overline { 
            get {
                if (owner.IsSet(Style.PROP_FONT_OVERLINE)) {
                    return (bool)(owner.ViewState["Font_Overline"]);
                } 
                return false;
            } 
            set { 
                owner.ViewState["Font_Overline"] = value;
                owner.SetBit(Style.PROP_FONT_OVERLINE); 
            }
        }

 
        /// 
        ///  
        internal Style Owner { 
            get {
                return owner; 
            }
        }

 
        /// 
        ///    Indicates the font size. 
        ///  
        [
            WebCategory("Appearance"), 
            DefaultValue(typeof(FontUnit), ""),
            WebSysDescription(SR.FontInfo_Size),
            NotifyParentProperty(true),
            RefreshProperties(RefreshProperties.Repaint) 
        ]
        public FontUnit Size { 
            get { 
                if (owner.IsSet(Style.PROP_FONT_SIZE)) {
                    return (FontUnit)(owner.ViewState["Font_Size"]); 
                }
                return FontUnit.Empty;
            }
            set { 
                if ((value.Type == FontSize.AsUnit) && (value.Unit.Value < 0)) {
                    throw new ArgumentOutOfRangeException("value"); 
                } 
                owner.ViewState["Font_Size"] = value;
                owner.SetBit(Style.PROP_FONT_SIZE); 
            }
        }

 
        /// 
        ///    Indicates whether the text is striked out. 
        ///  
        [
            WebCategory("Appearance"), 
            DefaultValue(false),
            WebSysDescription(SR.FontInfo_Strikeout),
            NotifyParentProperty(true)
        ] 
        public bool Strikeout {
            get { 
                if (owner.IsSet(Style.PROP_FONT_STRIKEOUT)) { 
                    return (bool)(owner.ViewState["Font_Strikeout"]);
                } 
                return false;
            }
            set {
                owner.ViewState["Font_Strikeout"] = value; 
                owner.SetBit(Style.PROP_FONT_STRIKEOUT);
            } 
        } 

 
        /// 
        ///    Indicates whether the text is underlined.
        /// 
        [ 
            WebCategory("Appearance"),
            DefaultValue(false), 
            WebSysDescription(SR.FontInfo_Underline), 
            NotifyParentProperty(true)
        ] 
        public bool Underline {
            get {
                if (owner.IsSet(Style.PROP_FONT_UNDERLINE)) {
                    return (bool)(owner.ViewState["Font_Underline"]); 
                }
                return false; 
            } 
            set {
                owner.ViewState["Font_Underline"] = value; 
                owner.SetBit(Style.PROP_FONT_UNDERLINE);
            }
        }
 

        ///  
        /// Resets all properties that have their default value to their unset state.  
        /// 
        public void ClearDefaults() { 
            if (Names.Length == 0) {
                owner.ViewState.Remove("Font_Names");
                owner.ClearBit(Style.PROP_FONT_NAMES);
            } 
            if (Size == FontUnit.Empty) {
                owner.ViewState.Remove("Font_Size"); 
                owner.ClearBit(Style.PROP_FONT_SIZE); 
            }
            if (Bold == false) 
                ResetBold();
            if (Italic == false)
                ResetItalic();
            if (Underline == false) 
                ResetUnderline();
            if (Overline == false) 
                ResetOverline(); 
            if (Strikeout == false)
                ResetStrikeout(); 
        }


 
        /// 
        /// Copies the font properties of another  into this instance.  
        ///  
        public void CopyFrom(FontInfo f) {
            if (f != null) { 
                Style fOwner = f.Owner;
                if (fOwner.RegisteredCssClass.Length != 0) {
                    if (fOwner.IsSet(Style.PROP_FONT_NAMES))
                        ResetNames(); 
                    if (fOwner.IsSet(Style.PROP_FONT_SIZE) && (f.Size != FontUnit.Empty))
                        ResetFontSize(); 
                    if (fOwner.IsSet(Style.PROP_FONT_BOLD)) 
                        ResetBold();
                    if (fOwner.IsSet(Style.PROP_FONT_ITALIC)) 
                        ResetItalic();
                    if (fOwner.IsSet(Style.PROP_FONT_OVERLINE))
                        ResetOverline();
                    if (fOwner.IsSet(Style.PROP_FONT_STRIKEOUT)) 
                        ResetStrikeout();
                    if (fOwner.IsSet(Style.PROP_FONT_UNDERLINE)) 
                        ResetUnderline(); 
                }
                else { 
                    if (fOwner.IsSet(Style.PROP_FONT_NAMES)) {
                        Names = f.Names;
                    }
                    if (fOwner.IsSet(Style.PROP_FONT_SIZE) && (f.Size != FontUnit.Empty)) 
                        Size = f.Size;
 
                    // Only carry through true boolean values. Otherwise merging and copying 
                    // can do 3 different things for each property, but they are only persisted
                    // as 2 state values. 
                    if (fOwner.IsSet(Style.PROP_FONT_BOLD))
                        Bold = f.Bold;
                    if (fOwner.IsSet(Style.PROP_FONT_ITALIC))
                        Italic = f.Italic; 
                    if (fOwner.IsSet(Style.PROP_FONT_OVERLINE))
                        Overline = f.Overline; 
                    if (fOwner.IsSet(Style.PROP_FONT_STRIKEOUT)) 
                        Strikeout = f.Strikeout;
                    if (fOwner.IsSet(Style.PROP_FONT_UNDERLINE)) 
                        Underline = f.Underline;
                }
            }
        } 

 
        ///  
        /// Combines the font properties of another  with this
        ///    instance.  
        /// 
        public void MergeWith(FontInfo f) {
            if (f != null) {
                Style fOwner = f.Owner; 
                if (fOwner.RegisteredCssClass.Length == 0) {
                    if (fOwner.IsSet(Style.PROP_FONT_NAMES) && !owner.IsSet(Style.PROP_FONT_NAMES)) 
                        Names = f.Names; 
                    if (fOwner.IsSet(Style.PROP_FONT_SIZE) && (!owner.IsSet(Style.PROP_FONT_SIZE) || (Size == FontUnit.Empty)))
                        Size = f.Size; 
                    if (fOwner.IsSet(Style.PROP_FONT_BOLD) && !owner.IsSet(Style.PROP_FONT_BOLD))
                        Bold = f.Bold;
                    if (fOwner.IsSet(Style.PROP_FONT_ITALIC) && !owner.IsSet(Style.PROP_FONT_ITALIC))
                        Italic = f.Italic; 
                    if (fOwner.IsSet(Style.PROP_FONT_OVERLINE) && !owner.IsSet(Style.PROP_FONT_OVERLINE))
                        Overline = f.Overline; 
                    if (fOwner.IsSet(Style.PROP_FONT_STRIKEOUT) && !owner.IsSet(Style.PROP_FONT_STRIKEOUT)) 
                        Strikeout = f.Strikeout;
                    if (fOwner.IsSet(Style.PROP_FONT_UNDERLINE) && !owner.IsSet(Style.PROP_FONT_UNDERLINE)) 
                        Underline = f.Underline;
                }
            }
        } 

 
        ///  
        /// Resets all properties to their defaults.
        ///  
        internal void Reset() {
            if (owner.IsSet(Style.PROP_FONT_NAMES))
                ResetNames();
            if (owner.IsSet(Style.PROP_FONT_SIZE)) 
                ResetFontSize();
            if (owner.IsSet(Style.PROP_FONT_BOLD)) 
                ResetBold(); 
            if (owner.IsSet(Style.PROP_FONT_ITALIC))
                ResetItalic(); 
            if (owner.IsSet(Style.PROP_FONT_UNDERLINE))
                ResetUnderline();
            if (owner.IsSet(Style.PROP_FONT_OVERLINE))
                ResetOverline(); 
            if (owner.IsSet(Style.PROP_FONT_STRIKEOUT))
                ResetStrikeout(); 
        } 

        ///  
        /// Only serialize if the Bold property has changed.  This means that we serialize "false"
        /// if they were set to false in the designer.
        /// 
        private void ResetBold() { 
            owner.ViewState.Remove("Font_Bold");
            owner.ClearBit(Style.PROP_FONT_BOLD); 
        } 

        private void ResetNames() { 
            owner.ViewState.Remove("Font_Names");
            owner.ClearBit(Style.PROP_FONT_NAMES);
        }
 
        private void ResetFontSize() {
            owner.ViewState.Remove("Font_Size"); 
            owner.ClearBit(Style.PROP_FONT_SIZE); 
        }
 
        /// 
        /// Only serialize if the Italic property has changed.  This means that we serialize "false"
        /// if they were set to false in the designer.
        ///  
        private void ResetItalic() {
            owner.ViewState.Remove("Font_Italic"); 
            owner.ClearBit(Style.PROP_FONT_ITALIC); 
        }
 
        /// 
        /// Only serialize if the Overline property has changed.  This means that we serialize "false"
        /// if they were set to false in the designer.
        ///  
        private void ResetOverline() {
            owner.ViewState.Remove("Font_Overline"); 
            owner.ClearBit(Style.PROP_FONT_OVERLINE); 
        }
 
        /// 
        /// Only serialize if the Strikeout property has changed.  This means that we serialize "false"
        /// if they were set to false in the designer.
        ///  
        private void ResetStrikeout() {
            owner.ViewState.Remove("Font_Strikeout"); 
            owner.ClearBit(Style.PROP_FONT_STRIKEOUT); 
        }
 
        /// 
        /// Only serialize if the Underline property has changed.  This means that we serialize "false"
        /// if they were set to false in the designer.
        ///  
        private void ResetUnderline() {
            owner.ViewState.Remove("Font_Underline"); 
            owner.ClearBit(Style.PROP_FONT_UNDERLINE); 
        }
 
        /// 
        /// Only serialize if the Bold property has changed.  This means that we serialize "false"
        /// if they were set to false in the designer.
        ///  
        private bool ShouldSerializeBold() {
            return owner.IsSet(Style.PROP_FONT_BOLD); 
        } 

        ///  
        /// Only serialize if the Italic property has changed.  This means that we serialize "false"
        /// if they were set to false in the designer.
        /// 
        private bool ShouldSerializeItalic() { 
            return owner.IsSet(Style.PROP_FONT_ITALIC);
        } 
 
        /// 
        /// Only serialize if the Overline property has changed.  This means that we serialize "false" 
        /// if they were set to false in the designer.
        /// 
        private bool ShouldSerializeOverline() {
            return owner.IsSet(Style.PROP_FONT_OVERLINE); 
        }
 
        ///  
        /// Only serialize if the Strikeout property has changed.  This means that we serialize "false"
        /// if they were set to false in the designer. 
        /// 
        private bool ShouldSerializeStrikeout() {
            return owner.IsSet(Style.PROP_FONT_STRIKEOUT);
        } 

        ///  
        /// Only serialize if the Underline property has changed.  This means that we serialize "false" 
        /// if they were set to false in the designer.
        ///  
        private bool ShouldSerializeUnderline() {
            return owner.IsSet(Style.PROP_FONT_UNDERLINE);
        }
 

        ///  
        public bool ShouldSerializeNames() { 
            string[] names = Names;
            return names.Length > 0; 
        }


        ///  
        /// 
        public override string ToString() { 
            string size = this.Size.ToString(CultureInfo.InvariantCulture); 
            string s = this.Name;
 
            if (size.Length != 0) {
                if (s.Length != 0) {
                    s += ", " + size;
                } 
                else {
                    s = size; 
                } 
            }
            return s; 
        }
    }
}
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FontInfo.cs source code in C# .NET

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