Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Framework / MS / Internal / PtsHost / MbpInfo.cs / 1305600 / MbpInfo.cs
//----------------------------------------------------------------------------
//
// Copyright (C) Microsoft Corporation. All rights reserved.
//
// File: MbpInfo.cs
//
// Description: Provides paragraph level margin collapsing support.
//
//---------------------------------------------------------------------------
using System;
using System.Windows; // DependencyObject
using System.Windows.Documents; // Block
using MS.Internal.Text; // TextDpi
using System.Windows.Media; // Brush
using MS.Internal.PtsHost.UnsafeNativeMethods; // Pts
namespace MS.Internal.PtsHost
{
///
/// Provides services for MBP handling.
///
internal sealed class MbpInfo
{
///
/// Get MbpInfo from DependencyObject.
///
/// DependencyObject for which MBP properties are retrieved.
internal static MbpInfo FromElement(DependencyObject o)
{
if (o is Block || o is AnchoredBlock || o is TableCell || o is ListItem)
{
MbpInfo mbp = new MbpInfo((TextElement)o);
double lineHeight = DynamicPropertyReader.GetLineHeightValue(o);
if (mbp.IsMarginAuto)
{
ResolveAutoMargin(mbp, o, lineHeight);
}
if (mbp.IsPaddingAuto)
{
ResolveAutoPadding(mbp, o, lineHeight);
}
return mbp;
}
return _empty;
}
///
/// Mirrors margin
///
internal void MirrorMargin()
{
ReverseFlowDirection(ref _margin);
}
///
/// Mirrors border and padding
///
internal void MirrorBP()
{
ReverseFlowDirection(ref _border);
ReverseFlowDirection(ref _padding);
}
///
/// Reverses flow direction for a given thickness
///
private static void ReverseFlowDirection(ref Thickness thickness)
{
double temp = thickness.Left;
thickness.Left = thickness.Right;
thickness.Right = temp;
}
///
/// Static constructor.
///
static MbpInfo()
{
_empty = new MbpInfo();
}
///
/// Private constructor.
///
private MbpInfo()
{
_margin = new Thickness();
_border = new Thickness();
_padding = new Thickness();
_borderBrush = new SolidColorBrush();
}
///
/// Constructor.
///
/// Block for which MBP properties are retrieved.
private MbpInfo(TextElement block)
{
_margin = (Thickness)block.GetValue(Block.MarginProperty);
_border = (Thickness)block.GetValue(Block.BorderThicknessProperty);
_padding = (Thickness)block.GetValue(Block.PaddingProperty);
_borderBrush = (Brush)block.GetValue(Block.BorderBrushProperty);
}
///
/// Resolve Auto values for Margin.
///
private static void ResolveAutoMargin(MbpInfo mbp, DependencyObject o, double lineHeight)
{
Thickness defaultMargin;
if (o is Paragraph)
{
DependencyObject parent = ((Paragraph)o).Parent;
if (parent is ListItem || parent is TableCell || parent is AnchoredBlock)
{
defaultMargin = new Thickness(0);
}
else
{
defaultMargin = new Thickness(0, lineHeight, 0, lineHeight);
}
}
else if (o is Table || o is List)
{
defaultMargin = new Thickness(0, lineHeight, 0, lineHeight);
}
else if (o is Figure || o is Floater)
{
defaultMargin = new Thickness(0.5 * lineHeight);
}
else
{
defaultMargin = new Thickness(0);
}
mbp.Margin = new Thickness(
Double.IsNaN(mbp.Margin.Left) ? defaultMargin.Left : mbp.Margin.Left,
Double.IsNaN(mbp.Margin.Top) ? defaultMargin.Top : mbp.Margin.Top,
Double.IsNaN(mbp.Margin.Right) ? defaultMargin.Right : mbp.Margin.Right,
Double.IsNaN(mbp.Margin.Bottom) ? defaultMargin.Bottom : mbp.Margin.Bottom);
}
///
/// Resolve Auto values for Padding.
///
private static void ResolveAutoPadding(MbpInfo mbp, DependencyObject o, double lineHeight)
{
Thickness defaultPadding;
if (o is Figure || o is Floater)
{
defaultPadding = new Thickness(0.5 * lineHeight);
}
else if (o is List)
{
defaultPadding = ListMarkerSourceInfo.CalculatePadding((List)o, lineHeight);
}
else
{
defaultPadding = new Thickness(0);
}
mbp.Padding = new Thickness(
Double.IsNaN(mbp.Padding.Left) ? defaultPadding.Left : mbp.Padding.Left,
Double.IsNaN(mbp.Padding.Top) ? defaultPadding.Top : mbp.Padding.Top,
Double.IsNaN(mbp.Padding.Right) ? defaultPadding.Right : mbp.Padding.Right,
Double.IsNaN(mbp.Padding.Bottom) ? defaultPadding.Bottom : mbp.Padding.Bottom);
}
///
/// Combined value of left Margin, Border and Padding.
///
internal int MBPLeft
{
get { return TextDpi.ToTextDpi(_margin.Left) + TextDpi.ToTextDpi(_border.Left) + TextDpi.ToTextDpi(_padding.Left); }
}
///
/// Combined value of right Margin, Border and Padding.
///
internal int MBPRight
{
get { return TextDpi.ToTextDpi(_margin.Right) + TextDpi.ToTextDpi(_border.Right) + TextDpi.ToTextDpi(_padding.Right); }
}
///
/// Combined value of top Margin, Border and Padding.
///
internal int MBPTop
{
get { return TextDpi.ToTextDpi(_margin.Top) + TextDpi.ToTextDpi(_border.Top) + TextDpi.ToTextDpi(_padding.Top); }
}
///
/// Combined value of top Margin, Border and Padding.
///
internal int MBPBottom
{
get { return TextDpi.ToTextDpi(_margin.Bottom) + TextDpi.ToTextDpi(_border.Bottom) + TextDpi.ToTextDpi(_padding.Bottom); }
}
///
/// Combined value of left Border and Padding.
///
internal int BPLeft
{
get { return TextDpi.ToTextDpi(_border.Left) + TextDpi.ToTextDpi(_padding.Left); }
}
///
/// Combined value of right Border and Padding.
///
internal int BPRight
{
get { return TextDpi.ToTextDpi(_border.Right) + TextDpi.ToTextDpi(_padding.Right); }
}
///
/// Combined value of top Border and Padding.
///
internal int BPTop
{
get { return TextDpi.ToTextDpi(_border.Top) + TextDpi.ToTextDpi(_padding.Top); }
}
///
/// Combined value of bottom Border and Padding.
///
internal int BPBottom
{
get { return TextDpi.ToTextDpi(_border.Bottom) + TextDpi.ToTextDpi(_padding.Bottom); }
}
///
/// Left Border
///
internal int BorderLeft
{
get { return TextDpi.ToTextDpi(_border.Left); }
}
///
/// Right Border
///
internal int BorderRight
{
get { return TextDpi.ToTextDpi(_border.Right); }
}
///
/// Top Border
///
internal int BorderTop
{
get { return TextDpi.ToTextDpi(_border.Top); }
}
///
/// Bottom Border
///
internal int BorderBottom
{
get { return TextDpi.ToTextDpi(_border.Bottom); }
}
///
/// Left margin.
///
internal int MarginLeft
{
get { return TextDpi.ToTextDpi(_margin.Left); }
}
///
/// Right margin.
///
internal int MarginRight
{
get { return TextDpi.ToTextDpi(_margin.Right); }
}
///
/// top margin.
///
internal int MarginTop
{
get { return TextDpi.ToTextDpi(_margin.Top); }
}
///
/// Bottom margin.
///
internal int MarginBottom
{
get { return TextDpi.ToTextDpi(_margin.Bottom); }
}
///
/// Margin thickness.
///
internal Thickness Margin
{
get { return _margin; }
set { _margin = value; }
}
///
/// Border thickness.
///
internal Thickness Border
{
get { return _border; }
set { _border = value; }
}
internal Thickness Padding
{
get { return _padding; }
set { _padding = value; }
}
///
/// Border brush.
///
internal Brush BorderBrush
{
get { return _borderBrush; }
}
///
/// Whether any padding value is Auto.
///
private bool IsPaddingAuto
{
get
{
return (
Double.IsNaN(_padding.Left) ||
Double.IsNaN(_padding.Right) ||
Double.IsNaN(_padding.Top) ||
Double.IsNaN(_padding.Bottom));
}
}
///
/// Whether any margin value is Auto.
///
private bool IsMarginAuto
{
get
{
return (
Double.IsNaN(_margin.Left) ||
Double.IsNaN(_margin.Right) ||
Double.IsNaN(_margin.Top) ||
Double.IsNaN(_margin.Bottom));
}
}
///
/// Margin thickness.
///
private Thickness _margin;
///
/// Border thickness.
///
private Thickness _border;
///
/// Padding thickness.
///
private Thickness _padding;
///
/// Border brush.
///
private Brush _borderBrush;
///
/// Empty MBPInfo instance.
///
private static MbpInfo _empty;
}
}
// 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: MbpInfo.cs
//
// Description: Provides paragraph level margin collapsing support.
//
//---------------------------------------------------------------------------
using System;
using System.Windows; // DependencyObject
using System.Windows.Documents; // Block
using MS.Internal.Text; // TextDpi
using System.Windows.Media; // Brush
using MS.Internal.PtsHost.UnsafeNativeMethods; // Pts
namespace MS.Internal.PtsHost
{
///
/// Provides services for MBP handling.
///
internal sealed class MbpInfo
{
///
/// Get MbpInfo from DependencyObject.
///
/// DependencyObject for which MBP properties are retrieved.
internal static MbpInfo FromElement(DependencyObject o)
{
if (o is Block || o is AnchoredBlock || o is TableCell || o is ListItem)
{
MbpInfo mbp = new MbpInfo((TextElement)o);
double lineHeight = DynamicPropertyReader.GetLineHeightValue(o);
if (mbp.IsMarginAuto)
{
ResolveAutoMargin(mbp, o, lineHeight);
}
if (mbp.IsPaddingAuto)
{
ResolveAutoPadding(mbp, o, lineHeight);
}
return mbp;
}
return _empty;
}
///
/// Mirrors margin
///
internal void MirrorMargin()
{
ReverseFlowDirection(ref _margin);
}
///
/// Mirrors border and padding
///
internal void MirrorBP()
{
ReverseFlowDirection(ref _border);
ReverseFlowDirection(ref _padding);
}
///
/// Reverses flow direction for a given thickness
///
private static void ReverseFlowDirection(ref Thickness thickness)
{
double temp = thickness.Left;
thickness.Left = thickness.Right;
thickness.Right = temp;
}
///
/// Static constructor.
///
static MbpInfo()
{
_empty = new MbpInfo();
}
///
/// Private constructor.
///
private MbpInfo()
{
_margin = new Thickness();
_border = new Thickness();
_padding = new Thickness();
_borderBrush = new SolidColorBrush();
}
///
/// Constructor.
///
/// Block for which MBP properties are retrieved.
private MbpInfo(TextElement block)
{
_margin = (Thickness)block.GetValue(Block.MarginProperty);
_border = (Thickness)block.GetValue(Block.BorderThicknessProperty);
_padding = (Thickness)block.GetValue(Block.PaddingProperty);
_borderBrush = (Brush)block.GetValue(Block.BorderBrushProperty);
}
///
/// Resolve Auto values for Margin.
///
private static void ResolveAutoMargin(MbpInfo mbp, DependencyObject o, double lineHeight)
{
Thickness defaultMargin;
if (o is Paragraph)
{
DependencyObject parent = ((Paragraph)o).Parent;
if (parent is ListItem || parent is TableCell || parent is AnchoredBlock)
{
defaultMargin = new Thickness(0);
}
else
{
defaultMargin = new Thickness(0, lineHeight, 0, lineHeight);
}
}
else if (o is Table || o is List)
{
defaultMargin = new Thickness(0, lineHeight, 0, lineHeight);
}
else if (o is Figure || o is Floater)
{
defaultMargin = new Thickness(0.5 * lineHeight);
}
else
{
defaultMargin = new Thickness(0);
}
mbp.Margin = new Thickness(
Double.IsNaN(mbp.Margin.Left) ? defaultMargin.Left : mbp.Margin.Left,
Double.IsNaN(mbp.Margin.Top) ? defaultMargin.Top : mbp.Margin.Top,
Double.IsNaN(mbp.Margin.Right) ? defaultMargin.Right : mbp.Margin.Right,
Double.IsNaN(mbp.Margin.Bottom) ? defaultMargin.Bottom : mbp.Margin.Bottom);
}
///
/// Resolve Auto values for Padding.
///
private static void ResolveAutoPadding(MbpInfo mbp, DependencyObject o, double lineHeight)
{
Thickness defaultPadding;
if (o is Figure || o is Floater)
{
defaultPadding = new Thickness(0.5 * lineHeight);
}
else if (o is List)
{
defaultPadding = ListMarkerSourceInfo.CalculatePadding((List)o, lineHeight);
}
else
{
defaultPadding = new Thickness(0);
}
mbp.Padding = new Thickness(
Double.IsNaN(mbp.Padding.Left) ? defaultPadding.Left : mbp.Padding.Left,
Double.IsNaN(mbp.Padding.Top) ? defaultPadding.Top : mbp.Padding.Top,
Double.IsNaN(mbp.Padding.Right) ? defaultPadding.Right : mbp.Padding.Right,
Double.IsNaN(mbp.Padding.Bottom) ? defaultPadding.Bottom : mbp.Padding.Bottom);
}
///
/// Combined value of left Margin, Border and Padding.
///
internal int MBPLeft
{
get { return TextDpi.ToTextDpi(_margin.Left) + TextDpi.ToTextDpi(_border.Left) + TextDpi.ToTextDpi(_padding.Left); }
}
///
/// Combined value of right Margin, Border and Padding.
///
internal int MBPRight
{
get { return TextDpi.ToTextDpi(_margin.Right) + TextDpi.ToTextDpi(_border.Right) + TextDpi.ToTextDpi(_padding.Right); }
}
///
/// Combined value of top Margin, Border and Padding.
///
internal int MBPTop
{
get { return TextDpi.ToTextDpi(_margin.Top) + TextDpi.ToTextDpi(_border.Top) + TextDpi.ToTextDpi(_padding.Top); }
}
///
/// Combined value of top Margin, Border and Padding.
///
internal int MBPBottom
{
get { return TextDpi.ToTextDpi(_margin.Bottom) + TextDpi.ToTextDpi(_border.Bottom) + TextDpi.ToTextDpi(_padding.Bottom); }
}
///
/// Combined value of left Border and Padding.
///
internal int BPLeft
{
get { return TextDpi.ToTextDpi(_border.Left) + TextDpi.ToTextDpi(_padding.Left); }
}
///
/// Combined value of right Border and Padding.
///
internal int BPRight
{
get { return TextDpi.ToTextDpi(_border.Right) + TextDpi.ToTextDpi(_padding.Right); }
}
///
/// Combined value of top Border and Padding.
///
internal int BPTop
{
get { return TextDpi.ToTextDpi(_border.Top) + TextDpi.ToTextDpi(_padding.Top); }
}
///
/// Combined value of bottom Border and Padding.
///
internal int BPBottom
{
get { return TextDpi.ToTextDpi(_border.Bottom) + TextDpi.ToTextDpi(_padding.Bottom); }
}
///
/// Left Border
///
internal int BorderLeft
{
get { return TextDpi.ToTextDpi(_border.Left); }
}
///
/// Right Border
///
internal int BorderRight
{
get { return TextDpi.ToTextDpi(_border.Right); }
}
///
/// Top Border
///
internal int BorderTop
{
get { return TextDpi.ToTextDpi(_border.Top); }
}
///
/// Bottom Border
///
internal int BorderBottom
{
get { return TextDpi.ToTextDpi(_border.Bottom); }
}
///
/// Left margin.
///
internal int MarginLeft
{
get { return TextDpi.ToTextDpi(_margin.Left); }
}
///
/// Right margin.
///
internal int MarginRight
{
get { return TextDpi.ToTextDpi(_margin.Right); }
}
///
/// top margin.
///
internal int MarginTop
{
get { return TextDpi.ToTextDpi(_margin.Top); }
}
///
/// Bottom margin.
///
internal int MarginBottom
{
get { return TextDpi.ToTextDpi(_margin.Bottom); }
}
///
/// Margin thickness.
///
internal Thickness Margin
{
get { return _margin; }
set { _margin = value; }
}
///
/// Border thickness.
///
internal Thickness Border
{
get { return _border; }
set { _border = value; }
}
internal Thickness Padding
{
get { return _padding; }
set { _padding = value; }
}
///
/// Border brush.
///
internal Brush BorderBrush
{
get { return _borderBrush; }
}
///
/// Whether any padding value is Auto.
///
private bool IsPaddingAuto
{
get
{
return (
Double.IsNaN(_padding.Left) ||
Double.IsNaN(_padding.Right) ||
Double.IsNaN(_padding.Top) ||
Double.IsNaN(_padding.Bottom));
}
}
///
/// Whether any margin value is Auto.
///
private bool IsMarginAuto
{
get
{
return (
Double.IsNaN(_margin.Left) ||
Double.IsNaN(_margin.Right) ||
Double.IsNaN(_margin.Top) ||
Double.IsNaN(_margin.Bottom));
}
}
///
/// Margin thickness.
///
private Thickness _margin;
///
/// Border thickness.
///
private Thickness _border;
///
/// Padding thickness.
///
private Thickness _padding;
///
/// Border brush.
///
private Brush _borderBrush;
///
/// Empty MBPInfo instance.
///
private static MbpInfo _empty;
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
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