PageScaling.cs source code in C# .NET

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Code:

/ DotNET / DotNET / 8.0 / untmp / WIN_WINDOWS / lh_tools_devdiv_wpf / Windows / wcp / Print / Reach / PrintConfig / PageScaling.cs / 1 / PageScaling.cs

                            /*++ 

Copyright (C) 2003 Microsoft Corporation
All rights reserved.
 
Module Name:
 
    PageScaling.cs 

Abstract: 

    Definition and implementation of this public feature/parameter related types.

Author: 

    [....] ([....]) 7/24/2003 
 
--*/
 
using System;
using System.IO;
using System.Xml;
using System.Collections; 
using System.Collections.ObjectModel;
using System.Collections.Generic; 
using System.Diagnostics; 
using System.Globalization;
using System.Text; 

using System.Printing;
using MS.Internal.Printing.Configuration;
 
#pragma warning disable 1634, 1691 // Allows suppression of certain PreSharp messages
 
namespace MS.Internal.Printing.Configuration 
{
    ///  
    /// Represents a scaling option.
    /// 
    internal class ScalingOption: PrintCapabilityOption
    { 
        #region Constructors
 
        internal ScalingOption(PrintCapabilityFeature ownerFeature) : base(ownerFeature) 
        {
            _value = PageScaling.Unspecified; 

            // We use negative index value to indicate that the custom option's
            // ParameterRef element hasn't been parsed and accepted yet.
 
            _scaleWIndex = _scaleHIndex = _squareScaleIndex = -1;
        } 
 
        #endregion Constructors
 
        #region Public Properties

        /// 
        /// Gets the page scaling option's value. 
        /// 
        public PageScaling Value 
        { 
            get
            { 
                return _value;
            }
        }
 
        /// 
        /// Gets the  object that specifies the custom scaling option's scaling percentage capability in the width direction. 
        ///  
        /// 
        /// For non-custom scaling options, this property's value is always null. 
        /// 
        public ScalingScaleWidthCapability CustomScaleWidth
        {
            get 
            {
                if (_scaleWIndex < 0) 
                    return null; 

                #if _DEBUG 
                Trace.Assert(Value == PageScaling.Custom, "THIS SHOULD NOT HAPPEN: non-Custom scaling option has ScaleWidth");
                #endif

                return (ScalingScaleWidthCapability)(this.OwnerFeature.OwnerPrintCap._pcLocalParamDefs[_scaleWIndex]); 
            }
        } 
 
        /// 
        /// Gets the  object that specifies the custom scaling option's scaling percentage capability in the height direction. 
        /// 
        /// 
        /// For non-custom scaling options, this property's value is always null.
        ///  
        public ScalingScaleHeightCapability CustomScaleHeight
        { 
            get 
            {
                if (_scaleHIndex < 0) 
                    return null;

                #if _DEBUG
                Trace.Assert(Value == PageScaling.Custom, "THIS SHOULD NOT HAPPEN: non-Custom scaling option has ScaleHeight"); 
                #endif
 
                return (ScalingScaleHeightCapability)(this.OwnerFeature.OwnerPrintCap._pcLocalParamDefs[_scaleHIndex]); 
            }
        } 

        public ScalingSquareScaleCapability CustomSquareScale
        {
            get 
            {
                if (_squareScaleIndex < 0) 
                    return null; 

                return (ScalingSquareScaleCapability)(this.OwnerFeature.OwnerPrintCap._pcLocalParamDefs[_squareScaleIndex]); 
            }
        }

        #endregion Public Properties 

        #region Public Methods 
 
        /// 
        /// Converts the scaling option to human-readable string. 
        /// 
        /// A string that represents this scaling option.
        public override string ToString()
        { 
            return Value.ToString() + ": " +
                   ((CustomScaleWidth != null) ? CustomScaleWidth.ToString() : "null") + " x " + 
                   ((CustomScaleHeight != null) ? CustomScaleHeight.ToString() : "null") + " x " + 
                   ((CustomSquareScale != null) ? CustomSquareScale.ToString() : "null");
        } 

        #endregion Public Methods

        #region Internal Fields 

        internal PageScaling _value; 
 
        internal int _scaleWIndex, _scaleHIndex, _squareScaleIndex;
 
        #endregion Internal Fields
    }

    ///  
    /// Represents page scaling capability.
    ///  
    internal class PageScalingCapability : PrintCapabilityFeature 
    {
        #region Constructors 

        internal PageScalingCapability(InternalPrintCapabilities ownerPrintCap) : base(ownerPrintCap)
        {
        } 

        #endregion Constructors 
 
        #region Public Properties
 
        /// 
        /// Gets the collection object that represents page scaling options supported by the device.
        /// 
        public Collection ScalingOptions 
        {
            get 
            { 
                return _scalingOptions;
            } 
        }

        #endregion Public Properties
 
        #region Internal Methods
 
        internal static PrintCapabilityFeature NewFeatureCallback(InternalPrintCapabilities printCap) 
        {
            PageScalingCapability cap = new PageScalingCapability(printCap); 
            cap._scalingOptions = new Collection();

            return cap;
        } 

        internal override sealed bool AddOptionCallback(PrintCapabilityOption baseOption) 
        { 
            bool complete = false;
 
            ScalingOption option = baseOption as ScalingOption;

            if (option._optionName != null)
            { 
                int enumValue = PrintSchemaMapper.SchemaNameToEnumValueWithArray(
                                    PrintSchemaTags.Keywords.PageScalingKeys.ScalingNames, 
                                    PrintSchemaTags.Keywords.PageScalingKeys.ScalingEnums, 
                                    option._optionName);
 
                if (enumValue > 0)
                {
                    option._value = (PageScaling)enumValue;
                } 
            }
 
            if (option.Value != PageScaling.Unspecified) 
            {
                if (option.Value == PageScaling.None) 
                {
                    // Non-custom scaling option doesn't need any ParameterRefs
                    complete = true;
                } 
                else if (option.Value == PageScaling.Custom)
                { 
                    // Custom scaling option must have the 2 scale ParameterRefs 
                    if ((option._scaleWIndex >= 0) &&
                        (option._scaleHIndex >= 0)) 
                    {
                        complete = true;
                    }
                    else 
                    {
                        // Need to reset the local parameter required flag since we are 
                        // ignoring the custom scaling option 
                        if (option._scaleWIndex >= 0)
                        { 
                            option.OwnerFeature.OwnerPrintCap.SetLocalParameterDefAsRequired(option._scaleWIndex, false);
                        }

                        if (option._scaleHIndex >= 0) 
                        {
                            option.OwnerFeature.OwnerPrintCap.SetLocalParameterDefAsRequired(option._scaleHIndex, false); 
                        } 
                    }
                } 
                else if (option.Value == PageScaling.CustomSquare)
                {
                    // Custom square scaling option must have the scale ParameterRef
                    if (option._squareScaleIndex >= 0) 
                    {
                        complete = true; 
                    } 
                    else
                    { 
                        // Need to reset the local parameter required flag since we are
                        // ignoring the custom scaling option
                        if (option._squareScaleIndex >= 0)
                        { 
                            option.OwnerFeature.OwnerPrintCap.SetLocalParameterDefAsRequired(option._squareScaleIndex, false);
                        } 
                    } 
                }
            } 

            if (complete)
            {
                this.ScalingOptions.Add(option); 
            }
 
            return complete; 
        }
 
        internal override sealed void AddSubFeatureCallback(PrintCapabilityFeature subFeature)
        {
            // PageScaling has no sub features.
            return; 
        }
 
        internal override sealed bool FeaturePropCallback(PrintCapabilityFeature feature, XmlPrintCapReader reader) 
        {
            // no feature property to handle 
            return false;
        }

        internal override sealed PrintCapabilityOption NewOptionCallback(PrintCapabilityFeature baseFeature) 
        {
            ScalingOption newOption = new ScalingOption(baseFeature); 
 
            return newOption;
        } 

        internal override sealed void OptionAttrCallback(PrintCapabilityOption baseOption, XmlPrintCapReader reader)
        {
            // no option attribute to handle 
            return;
        } 
 
        /// XML is not well-formed.
        internal override sealed bool OptionPropCallback(PrintCapabilityOption baseOption, XmlPrintCapReader reader) 
        {
            bool handled = false;

            ScalingOption option = baseOption as ScalingOption; 

            if (reader.CurrentElementNodeType == PrintSchemaNodeTypes.ScoredProperty) 
            { 
                handled = true;
 
                string sPropertyName = reader.CurrentElementNameAttrValue;

                if ( (sPropertyName == PrintSchemaTags.Keywords.PageScalingKeys.CustomScaleWidth) ||
                     (sPropertyName == PrintSchemaTags.Keywords.PageScalingKeys.CustomScaleHeight) || 
                     (sPropertyName == PrintSchemaTags.Keywords.PageScalingKeys.CustomSquareScale) )
                { 
                    // custom or custom square scaling properties 
                    try
                    { 
                        string paramRefName = reader.GetCurrentPropertyParamRefNameWithException();

                        if ( (sPropertyName == PrintSchemaTags.Keywords.PageScalingKeys.CustomScaleWidth) &&
                             (paramRefName == PrintSchemaTags.Keywords.ParameterDefs.PageScalingScaleWidth) ) 
                        {
                            option._scaleWIndex = (int)PrintSchemaLocalParameterDefs.PageScalingScaleWidth; 
 
                            // Mark the local parameter-def as required
                            option.OwnerFeature.OwnerPrintCap.SetLocalParameterDefAsRequired(option._scaleWIndex, true); 
                        }
                        else if ( (sPropertyName == PrintSchemaTags.Keywords.PageScalingKeys.CustomScaleHeight) &&
                                  (paramRefName == PrintSchemaTags.Keywords.ParameterDefs.PageScalingScaleHeight) )
                        { 
                            option._scaleHIndex = (int)PrintSchemaLocalParameterDefs.PageScalingScaleHeight;
 
                            // Mark the local parameter-def as required 
                            option.OwnerFeature.OwnerPrintCap.SetLocalParameterDefAsRequired(option._scaleHIndex, true);
                        } 
                        else if ( (sPropertyName == PrintSchemaTags.Keywords.PageScalingKeys.CustomSquareScale) &&
                                  (paramRefName == PrintSchemaTags.Keywords.ParameterDefs.PageSquareScalingScale) )
                        {
                            option._squareScaleIndex = (int)PrintSchemaLocalParameterDefs.PageSquareScalingScale; 

                            // Mark the local parameter-def as required 
                            option.OwnerFeature.OwnerPrintCap.SetLocalParameterDefAsRequired(option._squareScaleIndex, true); 
                        }
                        else 
                        {
                            #if _DEBUG
                            Trace.WriteLine("-Warning- skip unknown ParameterRef " + paramRefName +
                                            "' at line number " + reader._xmlReader.LineNumber + 
                                            ", line position " + reader._xmlReader.LinePosition);
                            #endif 
                        } 
                    }
                    // We want to catch internal FormatException to skip recoverable XML content syntax error 
                    #pragma warning suppress 56502
                    #if _DEBUG
                    catch (FormatException e)
                    #else 
                    catch (FormatException)
                    #endif 
                    { 
                        #if _DEBUG
                        Trace.WriteLine("-Error- " + e.Message); 
                        #endif
                    }
                }
                else 
                {
                    handled = false; 
 
                    #if _DEBUG
                    Trace.WriteLine("-Warning- skip unknown ScoredProperty '" + 
                                    reader.CurrentElementNameAttrValue + "' at line " +
                                    reader._xmlReader.LineNumber + ", position " +
                                    reader._xmlReader.LinePosition);
                    #endif 
                }
            } 
 
            return handled;
        } 

        #endregion Internal Methods

        #region Internal Properties 

        internal override sealed bool IsValid 
        { 
            get
            { 
                return (this.ScalingOptions.Count > 0);
            }
        }
 
        internal override sealed string FeatureName
        { 
            get 
            {
                return PrintSchemaTags.Keywords.PageScalingKeys.Self; 
            }
        }

        internal override sealed bool HasSubFeature 
        {
            get 
            { 
                return false;
            } 
        }

        #endregion Internal Properties
 
        #region Internal Fields
 
        internal Collection _scalingOptions; 

        #endregion Internal Fields 
    }

    /// 
    /// Represents page scaling setting. 
    /// 
    internal class PageScalingSetting : PrintTicketFeature 
    { 
        #region Constructors
 
        /// 
        /// Constructs a new page scaling setting object.
        /// 
        internal PageScalingSetting(InternalPrintTicket ownerPrintTicket) : base(ownerPrintTicket) 
        {
            this._featureName = PrintSchemaTags.Keywords.PageScalingKeys.Self; 
 
            this._propertyMaps = new PTPropertyMapEntry[] {
                new PTPropertyMapEntry(this, 
                                       PrintSchemaTags.Framework.OptionNameProperty,
                                       PTPropValueTypes.EnumStringValue,
                                       PrintSchemaTags.Keywords.PageScalingKeys.ScalingNames,
                                       PrintSchemaTags.Keywords.PageScalingKeys.ScalingEnums), 
                new PTPropertyMapEntry(this,
                                       PrintSchemaTags.Keywords.PageScalingKeys.CustomScaleWidth, 
                                       PTPropValueTypes.IntParamRefValue, 
                                       PrintSchemaTags.Keywords.PageScalingKeys.CustomScaleWidth,
                                       PrintSchemaTags.Keywords.ParameterDefs.PageScalingScaleWidth), 
                new PTPropertyMapEntry(this,
                                       PrintSchemaTags.Keywords.PageScalingKeys.CustomScaleHeight,
                                       PTPropValueTypes.IntParamRefValue,
                                       PrintSchemaTags.Keywords.PageScalingKeys.CustomScaleHeight, 
                                       PrintSchemaTags.Keywords.ParameterDefs.PageScalingScaleHeight),
                new PTPropertyMapEntry(this, 
                                       PrintSchemaTags.Keywords.PageScalingKeys.CustomSquareScale, 
                                       PTPropValueTypes.IntParamRefValue,
                                       PrintSchemaTags.Keywords.PageScalingKeys.CustomSquareScale, 
                                       PrintSchemaTags.Keywords.ParameterDefs.PageSquareScalingScale),
                };
        }
 
        #endregion Constructors
 
        #region Public Properties 

        ///  
        /// Gets the value of the page scaling setting.
        /// 
        /// 
        /// If the setting is not specified yet, the return value will be 
        /// .
        ///  
        public PageScaling Value 
        {
            get 
            {
                return (PageScaling)this[PrintSchemaTags.Framework.OptionNameProperty];
            }
        } 

        ///  
        /// Gets the custom page scaling setting's scaling percentage in the width direction. 
        /// 
        ///  
        /// If current page scaling setting is not ,
        /// the return value will be .
        /// 
        public int CustomScaleWidth 
        {
            get 
            { 
                if (this.Value != PageScaling.Custom)
                    return PrintSchema.UnspecifiedIntValue; 

                return this[PrintSchemaTags.Keywords.PageScalingKeys.CustomScaleWidth];
            }
        } 

        ///  
        /// Gets the custom page scaling setting's scaling percentage in the height direction. 
        /// 
        ///  
        /// If current page scaling setting is not ,
        /// the return value will be .
        /// 
        public int CustomScaleHeight 
        {
            get 
            { 
                if (this.Value != PageScaling.Custom)
                    return PrintSchema.UnspecifiedIntValue; 

                return this[PrintSchemaTags.Keywords.PageScalingKeys.CustomScaleHeight];
            }
        } 

        ///  
        /// Gets the custom square page scaling setting's scaling percentage. 
        /// 
        ///  
        /// If current page scaling setting is not ,
        /// the return value will be .
        /// 
        public int CustomSquareScale 
        {
            get 
            { 
                if (this.Value != PageScaling.CustomSquare)
                    return PrintSchema.UnspecifiedIntValue; 

                return this[PrintSchemaTags.Keywords.PageScalingKeys.CustomSquareScale];
            }
        } 

        #endregion Public Properties 
 
        #region Public Methods
 
        /// 
        /// Sets page scaling setting to custom square scaling.
        /// 
        /// custom square scaling percentage 
        /// 
        /// "squareScale" is not non-negative value. 
        ///  
        public void SetCustomSquareScaling(int squareScale)
        { 
            // Scaling percentage value must be non-negative. We do allow negative scaling offset values.
            if (squareScale < 0)
            {
                throw new ArgumentOutOfRangeException("squareScale", 
                                                      PTUtility.GetTextFromResource("ArgumentException.NonNegativeValue"));
            } 
 
            // Remove all XML content related to PageScaling feature
            // 
            ClearSetting();

            this[PrintSchemaTags.Framework.OptionNameProperty] = (int)PageScaling.CustomSquare;
 
            this[PrintSchemaTags.Keywords.PageScalingKeys.CustomSquareScale] = squareScale;
        } 
 
        /// 
        /// Converts the page scaling setting to human-readable string. 
        /// 
        /// A string that represents this page scaling setting.
        public override string ToString()
        { 
            if ((Value != PageScaling.Custom) || (Value != PageScaling.CustomSquare))
            { 
                return Value.ToString(); 
            }
            else 
            {
                return Value.ToString() +
                       ", ScaleWidth=" + CustomScaleWidth.ToString(CultureInfo.CurrentCulture) +
                       ", ScaleHeight=" + CustomScaleHeight.ToString(CultureInfo.CurrentCulture) + 
                       ", SquareScale=" + CustomSquareScale.ToString(CultureInfo.CurrentCulture);
            } 
        } 

        #endregion Public Methods 
    }
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
                        

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