Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / Orcas / NetFXw7 / wpf / src / Framework / MS / Internal / documents / TextViewBase.cs / 1 / TextViewBase.cs
//----------------------------------------------------------------------------
//
// Copyright (C) Microsoft Corporation. All rights reserved.
//
// File: TextViewBase.cs
//
// Description: TextViewBase is a minimal base class, providing only
// the functionality common across TextViews.
//
//---------------------------------------------------------------------------
using System; // InvalidOperationException, ...
using System.Collections.Generic; // List
using System.Collections.ObjectModel; // ReadOnlyCollection
using System.Windows; // Point, Rect, ...
using System.Windows.Controls.Primitives; // DocumentPageView
using System.Windows.Documents; // ITextView, ITextContainer
using System.Windows.Media; // VisualTreeHelper
namespace MS.Internal.Documents
{
///
/// TextViewBase is a minimal base class, providing only the functionality
/// common across TextViews.
///
internal abstract class TextViewBase : ITextView
{
//-------------------------------------------------------------------
//
// Internal Methods
//
//-------------------------------------------------------------------
#region Internal Methods
///
///
internal abstract ITextPointer GetTextPositionFromPoint(Point point, bool snapToText);
///
///
///
/// Calls GetRawRectangleFromTextPosition to get a rect and a transform, and applies the transform to the
/// rect.
///
internal virtual Rect GetRectangleFromTextPosition(ITextPointer position)
{
Transform transform;
Rect rect = GetRawRectangleFromTextPosition(position, out transform);
// Transform must not be null. TextViews returning no transform should return identity
Invariant.Assert(transform != null);
if (rect != Rect.Empty)
{
rect = transform.TransformBounds(rect);
}
return rect;
}
///
///
internal abstract Rect GetRawRectangleFromTextPosition(ITextPointer position, out Transform transform);
///
///
internal abstract Geometry GetTightBoundingGeometryFromTextPositions(ITextPointer startPosition, ITextPointer endPosition);
///
///
internal abstract ITextPointer GetPositionAtNextLine(ITextPointer position, double suggestedX, int count, out double newSuggestedX, out int linesMoved);
///
///
internal virtual ITextPointer GetPositionAtNextPage(ITextPointer position, Point suggestedOffset, int count, out Point newSuggestedOffset, out int pagesMoved)
{
newSuggestedOffset = suggestedOffset;
pagesMoved = 0;
return position;
}
///
///
internal abstract bool IsAtCaretUnitBoundary(ITextPointer position);
///
///
internal abstract ITextPointer GetNextCaretUnitPosition(ITextPointer position, LogicalDirection direction);
///
///
internal abstract ITextPointer GetBackspaceCaretUnitPosition(ITextPointer position);
///
///
internal abstract TextSegment GetLineRange(ITextPointer position);
///
///
internal virtual ReadOnlyCollection GetGlyphRuns(ITextPointer start, ITextPointer end)
{
// Verify that layout information is valid. Cannot continue if not valid.
if (!IsValid)
{
throw new InvalidOperationException(SR.Get(SRID.TextViewInvalidLayout));
}
return new ReadOnlyCollection(new List());
}
///
///
internal abstract bool Contains(ITextPointer position);
///
/// Scroll the given rectangle the minimum amount required to bring it entirely into view.
///
/// TextView doing the scrolling
/// Rect to scroll
///
/// # RECT POSITION RECT SIZE SCROLL REMEDY
/// 1 Above viewport lte viewport Down Align top edge of rect and viewport
/// 2 Above viewport gt viewport Down Align bottom edge of rect and viewport
/// 3 Below viewport lte viewport Up Align bottom edge of rect and viewport
/// 4 Below viewport gt viewport Up Align top edge of rect and viewport
/// 5 Entirely within viewport NA No scroll.
/// 6 Spanning viewport NA No scroll.
///
internal static void BringRectIntoViewMinimally(ITextView textView, Rect rect)
{
IScrollInfo isi = textView.RenderScope as IScrollInfo;
if (isi != null)
{
// Initialize the viewport
Rect viewport = new Rect(isi.HorizontalOffset, isi.VerticalOffset, isi.ViewportWidth, isi.ViewportHeight);
rect.X += viewport.X;
rect.Y += viewport.Y;
// Compute the offsets required to minimally scroll the child maximally into view.
double minX = System.Windows.Controls.ScrollContentPresenter.ComputeScrollOffsetWithMinimalScroll(viewport.Left, viewport.Right, rect.Left, rect.Right);
double minY = System.Windows.Controls.ScrollContentPresenter.ComputeScrollOffsetWithMinimalScroll(viewport.Top, viewport.Bottom, rect.Top, rect.Bottom);
// We have computed the scrolling offsets; scroll to them.
isi.SetHorizontalOffset(minX);
isi.SetVerticalOffset(minY);
// Adjust rect to reflect changes and allow outer IScrollInfos to react
FrameworkElement frameworkParent = FrameworkElement.GetFrameworkParent(textView.RenderScope) as FrameworkElement;
if (frameworkParent != null)
{
if (isi.ViewportWidth > 0)
{
rect.X -= minX;
}
if (isi.ViewportHeight > 0)
{
rect.Y -= minY;
}
frameworkParent.BringIntoView(rect);
}
}
else
{
((FrameworkElement)textView.RenderScope).BringIntoView(rect);
}
}
///
///
internal virtual void BringPositionIntoViewAsync(ITextPointer position, object userState)
{
// Verify that layout information is valid. Cannot continue if not valid.
if (!IsValid)
{
throw new InvalidOperationException(SR.Get(SRID.TextViewInvalidLayout));
}
OnBringPositionIntoViewCompleted(new BringPositionIntoViewCompletedEventArgs(position, Contains(position), null, false, userState));
}
///
///
internal virtual void BringPointIntoViewAsync(Point point, object userState)
{
ITextPointer position;
// Verify that layout information is valid. Cannot continue if not valid.
if (!IsValid)
{
throw new InvalidOperationException(SR.Get(SRID.TextViewInvalidLayout));
}
position = GetTextPositionFromPoint(point, true);
OnBringPointIntoViewCompleted(new BringPointIntoViewCompletedEventArgs(point, position, position != null, null, false, userState));
}
///
///
internal virtual void BringLineIntoViewAsync(ITextPointer position, double suggestedX, int count, object userState)
{
ITextPointer newPosition;
double newSuggestedX;
int linesMoved;
// Verify that layout information is valid. Cannot continue if not valid.
if (!IsValid)
{
throw new InvalidOperationException(SR.Get(SRID.TextViewInvalidLayout));
}
newPosition = GetPositionAtNextLine(position, suggestedX, count, out newSuggestedX, out linesMoved);
OnBringLineIntoViewCompleted(new BringLineIntoViewCompletedEventArgs(position, suggestedX, count, newPosition, newSuggestedX, linesMoved, linesMoved == count, null, false, userState));
}
///
///
internal virtual void BringPageIntoViewAsync(ITextPointer position, Point suggestedOffset, int count, object userState)
{
ITextPointer newPosition;
Point newSuggestedOffset;
int pagesMoved;
// Verify that layout information is valid. Cannot continue if not valid.
if (!IsValid)
{
throw new InvalidOperationException(SR.Get(SRID.TextViewInvalidLayout));
}
newPosition = GetPositionAtNextPage(position, suggestedOffset, count, out newSuggestedOffset, out pagesMoved);
OnBringPageIntoViewCompleted(new BringPageIntoViewCompletedEventArgs(position, suggestedOffset, count, newPosition, newSuggestedOffset, pagesMoved, pagesMoved == count, null, false, userState));
}
///
///
internal virtual void CancelAsync(object userState)
{
}
///
///
internal virtual bool Validate()
{
return this.IsValid;
}
///
///
internal virtual bool Validate(Point point)
{
return Validate();
}
///
///
internal virtual bool Validate(ITextPointer position)
{
Validate();
return (this.IsValid && this.Contains(position));
}
///
///
internal virtual void ThrottleBackgroundTasksForUserInput()
{
}
#endregion Internal Methods
//--------------------------------------------------------------------
//
// Internal Properties
//
//-------------------------------------------------------------------
#region Internal Properties
///
///
internal abstract UIElement RenderScope { get; }
///
///
internal abstract ITextContainer TextContainer { get; }
///
///
internal abstract bool IsValid { get; }
///
///
internal virtual bool RendersOwnSelection
{
get
{
return false;
}
}
///
///
internal abstract ReadOnlyCollection TextSegments { get; }
#endregion Internal Properties
//--------------------------------------------------------------------
//
// Public Events
//
//--------------------------------------------------------------------
#region Public Events
///
///
public event BringPositionIntoViewCompletedEventHandler BringPositionIntoViewCompleted;
///
///
public event BringPointIntoViewCompletedEventHandler BringPointIntoViewCompleted;
///
///
public event BringLineIntoViewCompletedEventHandler BringLineIntoViewCompleted;
///
///
public event BringPageIntoViewCompletedEventHandler BringPageIntoViewCompleted;
///
///
public event EventHandler Updated;
#endregion Public Events
//-------------------------------------------------------------------
//
// Protected Methods
//
//--------------------------------------------------------------------
#region Protected Methods
///
/// Fires BringPositionIntoViewCompleted event.
///
/// Event arguments for the BringPositionIntoViewCompleted event.
protected virtual void OnBringPositionIntoViewCompleted(BringPositionIntoViewCompletedEventArgs e)
{
if (this.BringPositionIntoViewCompleted != null)
{
this.BringPositionIntoViewCompleted(this, e);
}
}
///
/// Fires BringPointIntoViewCompleted event.
///
/// Event arguments for the BringPointIntoViewCompleted event.
protected virtual void OnBringPointIntoViewCompleted(BringPointIntoViewCompletedEventArgs e)
{
if (this.BringPointIntoViewCompleted != null)
{
this.BringPointIntoViewCompleted(this, e);
}
}
///
/// Fires BringLineIntoViewCompleted event.
///
/// Event arguments for the BringLineIntoViewCompleted event.
protected virtual void OnBringLineIntoViewCompleted(BringLineIntoViewCompletedEventArgs e)
{
if (this.BringLineIntoViewCompleted != null)
{
this.BringLineIntoViewCompleted(this, e);
}
}
///
/// Fires BringPageIntoViewCompleted event.
///
/// Event arguments for the BringPageIntoViewCompleted event.
protected virtual void OnBringPageIntoViewCompleted(BringPageIntoViewCompletedEventArgs e)
{
if (this.BringPageIntoViewCompleted != null)
{
this.BringPageIntoViewCompleted(this, e);
}
}
///
/// Fires Updated event.
///
/// Event arguments for the Updated event.
protected virtual void OnUpdated(EventArgs e)
{
if (this.Updated != null)
{
this.Updated(this, e);
}
}
///
/// Returns aggregate of two transforms
///
///
/// If either transform is identity, aggregation is not needed and the other transform is returned.
/// Otherwise returns a matrix transform whose value is the product of first and second transform values.
///
protected virtual Transform GetAggregateTransform(Transform firstTransform, Transform secondTransform)
{
Invariant.Assert(firstTransform != null);
Invariant.Assert(secondTransform != null);
if (firstTransform.IsIdentity)
{
// First transform is Identity. No aggregation needed. Return second transform.
return secondTransform;
}
else if (secondTransform.IsIdentity)
{
// Second transform is Identity. No aggregation needed. Return first transform.
return firstTransform;
}
// Both transforms are non-identity. Return matrix transform that is the product of firstTransform * secondTransform
Transform transform = new MatrixTransform(firstTransform.Value * secondTransform.Value);
return transform;
}
#endregion Protected Methods
//-------------------------------------------------------------------
//
// ITextView
//
//-------------------------------------------------------------------
#region ITextView
///
///
ITextPointer ITextView.GetTextPositionFromPoint(Point point, bool snapToText)
{
return GetTextPositionFromPoint(point, snapToText);
}
///
///
Rect ITextView.GetRectangleFromTextPosition(ITextPointer position)
{
return GetRectangleFromTextPosition(position);
}
///
///
Rect ITextView.GetRawRectangleFromTextPosition(ITextPointer position, out Transform transform)
{
return GetRawRectangleFromTextPosition(position, out transform);
}
///
///
Geometry ITextView.GetTightBoundingGeometryFromTextPositions(ITextPointer startPosition, ITextPointer endPosition)
{
return GetTightBoundingGeometryFromTextPositions(startPosition, endPosition);
}
///
///
ITextPointer ITextView.GetPositionAtNextLine(ITextPointer position, double suggestedX, int count, out double newSuggestedX, out int linesMoved)
{
return GetPositionAtNextLine(position, suggestedX, count, out newSuggestedX, out linesMoved);
}
///
///
ITextPointer ITextView.GetPositionAtNextPage(ITextPointer position, Point suggestedOffset, int count, out Point newSuggestedOffset, out int pagesMoved)
{
return GetPositionAtNextPage(position, suggestedOffset, count, out newSuggestedOffset, out pagesMoved);
}
///
///
bool ITextView.IsAtCaretUnitBoundary(ITextPointer position)
{
return IsAtCaretUnitBoundary(position);
}
///
///
ITextPointer ITextView.GetNextCaretUnitPosition(ITextPointer position, LogicalDirection direction)
{
return GetNextCaretUnitPosition(position, direction);
}
///
///
ITextPointer ITextView.GetBackspaceCaretUnitPosition(ITextPointer position)
{
return GetBackspaceCaretUnitPosition(position);
}
///
///
TextSegment ITextView.GetLineRange(ITextPointer position)
{
return GetLineRange(position);
}
///
///
ReadOnlyCollection ITextView.GetGlyphRuns(ITextPointer start, ITextPointer end)
{
return GetGlyphRuns(start, end);
}
///
///
bool ITextView.Contains(ITextPointer position)
{
return Contains(position);
}
///
///
void ITextView.BringPositionIntoViewAsync(ITextPointer position, object userState)
{
BringPositionIntoViewAsync(position, userState);
}
///
///
void ITextView.BringPointIntoViewAsync(Point point, object userState)
{
BringPointIntoViewAsync(point, userState);
}
///
///
void ITextView.BringLineIntoViewAsync(ITextPointer position, double suggestedX, int count, object userState)
{
BringLineIntoViewAsync(position, suggestedX, count, userState);
}
///
///
void ITextView.BringPageIntoViewAsync(ITextPointer position, Point suggestedOffset, int count, object userState)
{
BringPageIntoViewAsync(position, suggestedOffset, count, userState);
}
///
///
void ITextView.CancelAsync(object userState)
{
CancelAsync(userState);
}
///
///
bool ITextView.Validate()
{
return Validate();
}
///
///
bool ITextView.Validate(Point point)
{
return Validate(point);
}
///
///
bool ITextView.Validate(ITextPointer position)
{
return Validate(position);
}
///
///
void ITextView.ThrottleBackgroundTasksForUserInput()
{
ThrottleBackgroundTasksForUserInput();
}
///
///
UIElement ITextView.RenderScope
{
get { return RenderScope; }
}
///
///
ITextContainer ITextView.TextContainer
{
get { return TextContainer; }
}
///
///
bool ITextView.IsValid
{
get { return IsValid; }
}
///
///
bool ITextView.RendersOwnSelection
{
get { return RendersOwnSelection; }
}
///
///
ReadOnlyCollection ITextView.TextSegments
{
get { return TextSegments; }
}
#endregion ITextView
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
//----------------------------------------------------------------------------
//
// Copyright (C) Microsoft Corporation. All rights reserved.
//
// File: TextViewBase.cs
//
// Description: TextViewBase is a minimal base class, providing only
// the functionality common across TextViews.
//
//---------------------------------------------------------------------------
using System; // InvalidOperationException, ...
using System.Collections.Generic; // List
using System.Collections.ObjectModel; // ReadOnlyCollection
using System.Windows; // Point, Rect, ...
using System.Windows.Controls.Primitives; // DocumentPageView
using System.Windows.Documents; // ITextView, ITextContainer
using System.Windows.Media; // VisualTreeHelper
namespace MS.Internal.Documents
{
///
/// TextViewBase is a minimal base class, providing only the functionality
/// common across TextViews.
///
internal abstract class TextViewBase : ITextView
{
//-------------------------------------------------------------------
//
// Internal Methods
//
//-------------------------------------------------------------------
#region Internal Methods
///
///
internal abstract ITextPointer GetTextPositionFromPoint(Point point, bool snapToText);
///
///
///
/// Calls GetRawRectangleFromTextPosition to get a rect and a transform, and applies the transform to the
/// rect.
///
internal virtual Rect GetRectangleFromTextPosition(ITextPointer position)
{
Transform transform;
Rect rect = GetRawRectangleFromTextPosition(position, out transform);
// Transform must not be null. TextViews returning no transform should return identity
Invariant.Assert(transform != null);
if (rect != Rect.Empty)
{
rect = transform.TransformBounds(rect);
}
return rect;
}
///
///
internal abstract Rect GetRawRectangleFromTextPosition(ITextPointer position, out Transform transform);
///
///
internal abstract Geometry GetTightBoundingGeometryFromTextPositions(ITextPointer startPosition, ITextPointer endPosition);
///
///
internal abstract ITextPointer GetPositionAtNextLine(ITextPointer position, double suggestedX, int count, out double newSuggestedX, out int linesMoved);
///
///
internal virtual ITextPointer GetPositionAtNextPage(ITextPointer position, Point suggestedOffset, int count, out Point newSuggestedOffset, out int pagesMoved)
{
newSuggestedOffset = suggestedOffset;
pagesMoved = 0;
return position;
}
///
///
internal abstract bool IsAtCaretUnitBoundary(ITextPointer position);
///
///
internal abstract ITextPointer GetNextCaretUnitPosition(ITextPointer position, LogicalDirection direction);
///
///
internal abstract ITextPointer GetBackspaceCaretUnitPosition(ITextPointer position);
///
///
internal abstract TextSegment GetLineRange(ITextPointer position);
///
///
internal virtual ReadOnlyCollection GetGlyphRuns(ITextPointer start, ITextPointer end)
{
// Verify that layout information is valid. Cannot continue if not valid.
if (!IsValid)
{
throw new InvalidOperationException(SR.Get(SRID.TextViewInvalidLayout));
}
return new ReadOnlyCollection(new List());
}
///
///
internal abstract bool Contains(ITextPointer position);
///
/// Scroll the given rectangle the minimum amount required to bring it entirely into view.
///
/// TextView doing the scrolling
/// Rect to scroll
///
/// # RECT POSITION RECT SIZE SCROLL REMEDY
/// 1 Above viewport lte viewport Down Align top edge of rect and viewport
/// 2 Above viewport gt viewport Down Align bottom edge of rect and viewport
/// 3 Below viewport lte viewport Up Align bottom edge of rect and viewport
/// 4 Below viewport gt viewport Up Align top edge of rect and viewport
/// 5 Entirely within viewport NA No scroll.
/// 6 Spanning viewport NA No scroll.
///
internal static void BringRectIntoViewMinimally(ITextView textView, Rect rect)
{
IScrollInfo isi = textView.RenderScope as IScrollInfo;
if (isi != null)
{
// Initialize the viewport
Rect viewport = new Rect(isi.HorizontalOffset, isi.VerticalOffset, isi.ViewportWidth, isi.ViewportHeight);
rect.X += viewport.X;
rect.Y += viewport.Y;
// Compute the offsets required to minimally scroll the child maximally into view.
double minX = System.Windows.Controls.ScrollContentPresenter.ComputeScrollOffsetWithMinimalScroll(viewport.Left, viewport.Right, rect.Left, rect.Right);
double minY = System.Windows.Controls.ScrollContentPresenter.ComputeScrollOffsetWithMinimalScroll(viewport.Top, viewport.Bottom, rect.Top, rect.Bottom);
// We have computed the scrolling offsets; scroll to them.
isi.SetHorizontalOffset(minX);
isi.SetVerticalOffset(minY);
// Adjust rect to reflect changes and allow outer IScrollInfos to react
FrameworkElement frameworkParent = FrameworkElement.GetFrameworkParent(textView.RenderScope) as FrameworkElement;
if (frameworkParent != null)
{
if (isi.ViewportWidth > 0)
{
rect.X -= minX;
}
if (isi.ViewportHeight > 0)
{
rect.Y -= minY;
}
frameworkParent.BringIntoView(rect);
}
}
else
{
((FrameworkElement)textView.RenderScope).BringIntoView(rect);
}
}
///
///
internal virtual void BringPositionIntoViewAsync(ITextPointer position, object userState)
{
// Verify that layout information is valid. Cannot continue if not valid.
if (!IsValid)
{
throw new InvalidOperationException(SR.Get(SRID.TextViewInvalidLayout));
}
OnBringPositionIntoViewCompleted(new BringPositionIntoViewCompletedEventArgs(position, Contains(position), null, false, userState));
}
///
///
internal virtual void BringPointIntoViewAsync(Point point, object userState)
{
ITextPointer position;
// Verify that layout information is valid. Cannot continue if not valid.
if (!IsValid)
{
throw new InvalidOperationException(SR.Get(SRID.TextViewInvalidLayout));
}
position = GetTextPositionFromPoint(point, true);
OnBringPointIntoViewCompleted(new BringPointIntoViewCompletedEventArgs(point, position, position != null, null, false, userState));
}
///
///
internal virtual void BringLineIntoViewAsync(ITextPointer position, double suggestedX, int count, object userState)
{
ITextPointer newPosition;
double newSuggestedX;
int linesMoved;
// Verify that layout information is valid. Cannot continue if not valid.
if (!IsValid)
{
throw new InvalidOperationException(SR.Get(SRID.TextViewInvalidLayout));
}
newPosition = GetPositionAtNextLine(position, suggestedX, count, out newSuggestedX, out linesMoved);
OnBringLineIntoViewCompleted(new BringLineIntoViewCompletedEventArgs(position, suggestedX, count, newPosition, newSuggestedX, linesMoved, linesMoved == count, null, false, userState));
}
///
///
internal virtual void BringPageIntoViewAsync(ITextPointer position, Point suggestedOffset, int count, object userState)
{
ITextPointer newPosition;
Point newSuggestedOffset;
int pagesMoved;
// Verify that layout information is valid. Cannot continue if not valid.
if (!IsValid)
{
throw new InvalidOperationException(SR.Get(SRID.TextViewInvalidLayout));
}
newPosition = GetPositionAtNextPage(position, suggestedOffset, count, out newSuggestedOffset, out pagesMoved);
OnBringPageIntoViewCompleted(new BringPageIntoViewCompletedEventArgs(position, suggestedOffset, count, newPosition, newSuggestedOffset, pagesMoved, pagesMoved == count, null, false, userState));
}
///
///
internal virtual void CancelAsync(object userState)
{
}
///
///
internal virtual bool Validate()
{
return this.IsValid;
}
///
///
internal virtual bool Validate(Point point)
{
return Validate();
}
///
///
internal virtual bool Validate(ITextPointer position)
{
Validate();
return (this.IsValid && this.Contains(position));
}
///
///
internal virtual void ThrottleBackgroundTasksForUserInput()
{
}
#endregion Internal Methods
//--------------------------------------------------------------------
//
// Internal Properties
//
//-------------------------------------------------------------------
#region Internal Properties
///
///
internal abstract UIElement RenderScope { get; }
///
///
internal abstract ITextContainer TextContainer { get; }
///
///
internal abstract bool IsValid { get; }
///
///
internal virtual bool RendersOwnSelection
{
get
{
return false;
}
}
///
///
internal abstract ReadOnlyCollection TextSegments { get; }
#endregion Internal Properties
//--------------------------------------------------------------------
//
// Public Events
//
//--------------------------------------------------------------------
#region Public Events
///
///
public event BringPositionIntoViewCompletedEventHandler BringPositionIntoViewCompleted;
///
///
public event BringPointIntoViewCompletedEventHandler BringPointIntoViewCompleted;
///
///
public event BringLineIntoViewCompletedEventHandler BringLineIntoViewCompleted;
///
///
public event BringPageIntoViewCompletedEventHandler BringPageIntoViewCompleted;
///
///
public event EventHandler Updated;
#endregion Public Events
//-------------------------------------------------------------------
//
// Protected Methods
//
//--------------------------------------------------------------------
#region Protected Methods
///
/// Fires BringPositionIntoViewCompleted event.
///
/// Event arguments for the BringPositionIntoViewCompleted event.
protected virtual void OnBringPositionIntoViewCompleted(BringPositionIntoViewCompletedEventArgs e)
{
if (this.BringPositionIntoViewCompleted != null)
{
this.BringPositionIntoViewCompleted(this, e);
}
}
///
/// Fires BringPointIntoViewCompleted event.
///
/// Event arguments for the BringPointIntoViewCompleted event.
protected virtual void OnBringPointIntoViewCompleted(BringPointIntoViewCompletedEventArgs e)
{
if (this.BringPointIntoViewCompleted != null)
{
this.BringPointIntoViewCompleted(this, e);
}
}
///
/// Fires BringLineIntoViewCompleted event.
///
/// Event arguments for the BringLineIntoViewCompleted event.
protected virtual void OnBringLineIntoViewCompleted(BringLineIntoViewCompletedEventArgs e)
{
if (this.BringLineIntoViewCompleted != null)
{
this.BringLineIntoViewCompleted(this, e);
}
}
///
/// Fires BringPageIntoViewCompleted event.
///
/// Event arguments for the BringPageIntoViewCompleted event.
protected virtual void OnBringPageIntoViewCompleted(BringPageIntoViewCompletedEventArgs e)
{
if (this.BringPageIntoViewCompleted != null)
{
this.BringPageIntoViewCompleted(this, e);
}
}
///
/// Fires Updated event.
///
/// Event arguments for the Updated event.
protected virtual void OnUpdated(EventArgs e)
{
if (this.Updated != null)
{
this.Updated(this, e);
}
}
///
/// Returns aggregate of two transforms
///
///
/// If either transform is identity, aggregation is not needed and the other transform is returned.
/// Otherwise returns a matrix transform whose value is the product of first and second transform values.
///
protected virtual Transform GetAggregateTransform(Transform firstTransform, Transform secondTransform)
{
Invariant.Assert(firstTransform != null);
Invariant.Assert(secondTransform != null);
if (firstTransform.IsIdentity)
{
// First transform is Identity. No aggregation needed. Return second transform.
return secondTransform;
}
else if (secondTransform.IsIdentity)
{
// Second transform is Identity. No aggregation needed. Return first transform.
return firstTransform;
}
// Both transforms are non-identity. Return matrix transform that is the product of firstTransform * secondTransform
Transform transform = new MatrixTransform(firstTransform.Value * secondTransform.Value);
return transform;
}
#endregion Protected Methods
//-------------------------------------------------------------------
//
// ITextView
//
//-------------------------------------------------------------------
#region ITextView
///
///
ITextPointer ITextView.GetTextPositionFromPoint(Point point, bool snapToText)
{
return GetTextPositionFromPoint(point, snapToText);
}
///
///
Rect ITextView.GetRectangleFromTextPosition(ITextPointer position)
{
return GetRectangleFromTextPosition(position);
}
///
///
Rect ITextView.GetRawRectangleFromTextPosition(ITextPointer position, out Transform transform)
{
return GetRawRectangleFromTextPosition(position, out transform);
}
///
///
Geometry ITextView.GetTightBoundingGeometryFromTextPositions(ITextPointer startPosition, ITextPointer endPosition)
{
return GetTightBoundingGeometryFromTextPositions(startPosition, endPosition);
}
///
///
ITextPointer ITextView.GetPositionAtNextLine(ITextPointer position, double suggestedX, int count, out double newSuggestedX, out int linesMoved)
{
return GetPositionAtNextLine(position, suggestedX, count, out newSuggestedX, out linesMoved);
}
///
///
ITextPointer ITextView.GetPositionAtNextPage(ITextPointer position, Point suggestedOffset, int count, out Point newSuggestedOffset, out int pagesMoved)
{
return GetPositionAtNextPage(position, suggestedOffset, count, out newSuggestedOffset, out pagesMoved);
}
///
///
bool ITextView.IsAtCaretUnitBoundary(ITextPointer position)
{
return IsAtCaretUnitBoundary(position);
}
///
///
ITextPointer ITextView.GetNextCaretUnitPosition(ITextPointer position, LogicalDirection direction)
{
return GetNextCaretUnitPosition(position, direction);
}
///
///
ITextPointer ITextView.GetBackspaceCaretUnitPosition(ITextPointer position)
{
return GetBackspaceCaretUnitPosition(position);
}
///
///
TextSegment ITextView.GetLineRange(ITextPointer position)
{
return GetLineRange(position);
}
///
///
ReadOnlyCollection ITextView.GetGlyphRuns(ITextPointer start, ITextPointer end)
{
return GetGlyphRuns(start, end);
}
///
///
bool ITextView.Contains(ITextPointer position)
{
return Contains(position);
}
///
///
void ITextView.BringPositionIntoViewAsync(ITextPointer position, object userState)
{
BringPositionIntoViewAsync(position, userState);
}
///
///
void ITextView.BringPointIntoViewAsync(Point point, object userState)
{
BringPointIntoViewAsync(point, userState);
}
///
///
void ITextView.BringLineIntoViewAsync(ITextPointer position, double suggestedX, int count, object userState)
{
BringLineIntoViewAsync(position, suggestedX, count, userState);
}
///
///
void ITextView.BringPageIntoViewAsync(ITextPointer position, Point suggestedOffset, int count, object userState)
{
BringPageIntoViewAsync(position, suggestedOffset, count, userState);
}
///
///
void ITextView.CancelAsync(object userState)
{
CancelAsync(userState);
}
///
///
bool ITextView.Validate()
{
return Validate();
}
///
///
bool ITextView.Validate(Point point)
{
return Validate(point);
}
///
///
bool ITextView.Validate(ITextPointer position)
{
return Validate(position);
}
///
///
void ITextView.ThrottleBackgroundTasksForUserInput()
{
ThrottleBackgroundTasksForUserInput();
}
///
///
UIElement ITextView.RenderScope
{
get { return RenderScope; }
}
///
///
ITextContainer ITextView.TextContainer
{
get { return TextContainer; }
}
///
///
bool ITextView.IsValid
{
get { return IsValid; }
}
///
///
bool ITextView.RendersOwnSelection
{
get { return RendersOwnSelection; }
}
///
///
ReadOnlyCollection ITextView.TextSegments
{
get { return TextSegments; }
}
#endregion ITextView
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
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- CustomAttributeSerializer.cs
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- GlyphsSerializer.cs
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