FloaterBaseParagraph.cs source code in C# .NET

                        Code:
                         / DotNET / DotNET / 8.0 / untmp / WIN_WINDOWS / lh_tools_devdiv_wpf / Windows / wcp / Framework / MS / Internal / PtsHost / FloaterBaseParagraph.cs / 1 / FloaterBaseParagraph.cs
                        
                        
                            //---------------------------------------------------------------------------- 
//
// Copyright (C) Microsoft Corporation.  All rights reserved.
//
// Description: FloaterBaseParagraph class provides a wrapper for floater 
//              and UIElement objects.
// 
//--------------------------------------------------------------------------- 
#pragma warning disable 1634, 1691  // avoid generating warnings about unknown
// message numbers and unknown pragmas for PRESharp contol 

using System;
using System.Diagnostics;
using System.Security;              // SecurityCritical 
using System.Windows;
using System.Windows.Documents; 
using MS.Internal.Documents; 
using MS.Internal.Text;
 
using MS.Internal.PtsHost.UnsafeNativeMethods;

namespace MS.Internal.PtsHost
{ 
    // ---------------------------------------------------------------------
    // FloaterBaseParagraph class provides a wrapper for floater and UIElement objects. 
    // --------------------------------------------------------------------- 
    internal abstract class FloaterBaseParagraph : BaseParagraph
    { 
        //--------------------------------------------------------------------
        //
        //  Constructors
        // 
        //-------------------------------------------------------------------
 
        #region Constructors 

        // ------------------------------------------------------------------ 
        // Constructor.
        //
        //      element - Element associated with paragraph.
        //      structuralCache - Content's structural cache 
        // ------------------------------------------------------------------
        protected FloaterBaseParagraph(TextElement element, StructuralCache structuralCache) 
            : base(element, structuralCache) 
        {
        } 

        // -----------------------------------------------------------------
        // IDisposable.Dispose
        // ------------------------------------------------------------------ 
        public override void Dispose()
        { 
            base.Dispose(); 
        }
 
        #endregion Constructors

        //-------------------------------------------------------------------
        // 
        //  PTS callbacks
        // 
        //------------------------------------------------------------------- 

        #region PTS callbacks 

        // -----------------------------------------------------------------
        // UpdGetParaChange
        // ------------------------------------------------------------------ 
        internal override void UpdGetParaChange(
            out PTS.FSKCHANGE fskch,            // OUT: kind of change 
            out int fNoFurtherChanges)          // OUT: no changes after? 
        {
            fskch = PTS.FSKCHANGE.fskchNew; 
            fNoFurtherChanges = PTS.FromBoolean(_stopAsking);
        }

        //------------------------------------------------------------------- 
        // GetParaProperties
        //-------------------------------------------------------------------- 
        internal override void GetParaProperties( 
            ref PTS.FSPAP fspap)        // OUT: paragraph properties
        { 
            GetParaProperties(ref fspap, false);
            fspap.idobj = PtsHost.FloaterParagraphId;
        }
 
        //--------------------------------------------------------------------
        // CreateParaclient 
        //------------------------------------------------------------------- 
        internal override abstract void CreateParaclient(
            out IntPtr paraClientHandle);       // OUT: opaque to PTS paragraph client 

        //--------------------------------------------------------------------
        // CollapseMargin
        //------------------------------------------------------------------- 
        internal override abstract void CollapseMargin(
            BaseParaClient paraClient,          // IN: 
            MarginCollapsingState mcs,          // IN:  input margin collapsing state 
            uint fswdir,                        // IN:  current direction (of the track, in which margin collapsing is happening)
            bool suppressTopSpace,              // IN:  suppress empty space at the top of page 
            out int dvr);                        // OUT: dvr, calculated based on margin collapsing state

        //-------------------------------------------------------------------
        // GetFloaterProperties 
        //-------------------------------------------------------------------
        internal abstract void GetFloaterProperties( 
            uint fswdirTrack,                       // IN:  direction of track 
            out PTS.FSFLOATERPROPS fsfloaterprops);  // OUT: properties of the floater
 

        //--------------------------------------------------------------------
        // GetFloaterPolygons
        //------------------------------------------------------------------- 
        /// 
        /// Critical, because it is unsafe method. 
        ///  
        [SecurityCritical]
        internal unsafe virtual void GetFloaterPolygons( 
            FloaterBaseParaClient paraClient,       // IN:
            uint fswdirTrack,                   // IN:  direction of Track
            int ncVertices,                     // IN:  size of array of vertex counts (= number of polygons)
            int nfspt,                          // IN:  size of the array of all vertices 
            int* rgcVertices,                   // OUT: array of vertex counts (array containing number of vertices for each polygon)
            out int ccVertices,                 // OUT: actual number of vertex counts 
            PTS.FSPOINT* rgfspt,                // OUT: array of all vertices 
            out int cfspt,                      // OUT: actual total number of vertices in all polygons
            out int fWrapThrough)               // OUT: fill text in empty areas within obstacles? 
        {
            Debug.Assert(false, "Tight wrap is not currently supported.");
            ccVertices = cfspt = fWrapThrough = 0;
        } 

        //-------------------------------------------------------------------- 
        // FormatFloaterContentFinite 
        //--------------------------------------------------------------------
        internal abstract void FormatFloaterContentFinite( 
            FloaterBaseParaClient paraClient,       // IN:
            IntPtr pbrkrecIn,                   // IN:  break record---use if !IntPtr.Zero
            int fBRFromPreviousPage,            // IN:  break record was created on previous page
            IntPtr footnoteRejector,            // IN: 
            int fEmptyOk,                       // IN:  is it OK not to add anything?
            int fSuppressTopSpace,              // IN:  suppress empty space at the top of the page 
            uint fswdir,                        // IN:  direction of Track 
            int fAtMaxWidth,                    // IN:  formating is at full width of column
            int durAvailable,                   // IN:  width of available space 
            int dvrAvailable,                   // IN:  height of available space
            PTS.FSKSUPPRESSHARDBREAKBEFOREFIRSTPARA fsksuppresshardbreakbeforefirstparaIn,
                                                // IN: suppress breaks at track start?
            out PTS.FSFMTR fsfmtr,              // OUT: result of formatting 
            out IntPtr pfsFloatContent,         // OUT: opaque for PTS pointer pointer to formatted content
            out IntPtr pbrkrecOut,              // OUT: pointer to the floater content break record 
            out int durFloaterWidth,            // OUT: floater width 
            out int dvrFloaterHeight,           // OUT: floater height
            out PTS.FSBBOX fsbbox,              // OUT: floater bbox 
            out int cPolygons,                  // OUT: number of polygons
            out int cVertices);                 // OUT: total number of vertices in all polygons

        //------------------------------------------------------------------- 
        // FormatFloaterContentBottomless
        //-------------------------------------------------------------------- 
        internal abstract void FormatFloaterContentBottomless( 
            FloaterBaseParaClient paraClient,       // IN:
            int fSuppressTopSpace,              // IN:  suppress empty space at the top of the page 
            uint fswdir,                        // IN:  direction of track
            int fAtMaxWidth,                    // IN:  formating is at full width of column
            int durAvailable,                   // IN:  width of available space
            int dvrAvailable,                   // IN:  height of available space 
            out PTS.FSFMTRBL fsfmtrbl,          // OUT: result of formatting
            out IntPtr pfsFloatContent,         // OUT: opaque for PTS pointer pointer to formatted content 
            out int durFloaterWidth,            // OUT: floater width 
            out int dvrFloaterHeight,           // OUT: floater height
            out PTS.FSBBOX fsbbox,              // OUT: floater bbox 
            out int cPolygons,                  // OUT: number of polygons
            out int cVertices);                 // OUT: total number of vertices in all polygons

        //------------------------------------------------------------------- 
        // FormatFloaterContentBottomless
        //------------------------------------------------------------------- 
        internal abstract void UpdateBottomlessFloaterContent( 
            FloaterBaseParaClient paraClient,       // IN:
            int fSuppressTopSpace,              // IN:  suppress empty space at the top of the page 
            uint fswdir,                        // IN:  direction of track
            int fAtMaxWidth,                    // IN:  formating is at full width of column
            int durAvailable,                   // IN:  width of available space
            int dvrAvailable,                   // IN:  height of available space 
            IntPtr pfsFloatContent,             // IN: floater content
            out PTS.FSFMTRBL fsfmtrbl,          // OUT: result of formatting 
            out int durFloaterWidth,            // OUT: floater width 
            out int dvrFloaterHeight,           // OUT: floater height
            out PTS.FSBBOX fsbbox,              // OUT: floater bbox 
            out int cPolygons,                  // OUT: number of polygons
            out int cVertices);                 // OUT: total number of vertices in all polygons

        //------------------------------------------------------------------- 
        // GetMCSClientAfterFloater
        //-------------------------------------------------------------------- 
        internal abstract void GetMCSClientAfterFloater( 
            uint fswdirTrack,                   // IN:  direction of Track
            MarginCollapsingState mcs,          // IN:  input margin collapsing state 
            out IntPtr pmcsclientOut);         // OUT: MCSCLIENT that floater will return to track

        //-------------------------------------------------------------------
        // GetDvrUsedForFloater 
        //--------------------------------------------------------------------
        internal virtual void GetDvrUsedForFloater( 
            uint fswdirTrack,                   // IN:  direction of Track 
            MarginCollapsingState mcs,          // IN:  input margin collapsing state
            int dvrDisplaced,                   // IN: 
            out int dvrUsed)                    // OUT:
        {
            // When floater is pushed down due to collision, text may need to be
            // pushed down together with the floater. In such case dvrUsed needs to be 
            // set to height of the floater.
            // But for now there is no case, where we need this feature, hence dvrUsed is 
            // always 0. 
            dvrUsed = 0;
        } 

        #endregion PTS callbacks
    }
} 

#pragma warning enable 1634, 1691 

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