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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
using System.Windows.Media;
using System.Reflection;
using System.Runtime.Versioning;
using SWF = System.Windows.Forms;
using SD = System.Drawing;
using SW = System.Windows;
using SWM = System.Windows.Media;
using SWC = System.Windows.Controls;
namespace System.Windows.Forms.Integration
{
internal sealed class WindowsFormsHostPropertyMap : PropertyMap
{
public WindowsFormsHostPropertyMap(WindowsFormsHost host)
: base(host)
{
InitializeDefaultTranslators();
ResetAll();
}
/// <summary>
/// Initialize the list of things we translate by default, like
/// Background.
/// </summary>
private void InitializeDefaultTranslators()
{
DefaultTranslators.Add("Background", BackgroundPropertyTranslator);
DefaultTranslators.Add("FlowDirection", FlowDirectionPropertyTranslator);
DefaultTranslators.Add("FontStyle", FontStylePropertyTranslator);
DefaultTranslators.Add("FontWeight", FontWeightPropertyTranslator);
DefaultTranslators.Add("FontFamily", FontFamilyPropertyTranslator);
DefaultTranslators.Add("FontSize", FontSizePropertyTranslator);
DefaultTranslators.Add("Foreground", ForegroundPropertyTranslator);
DefaultTranslators.Add("IsEnabled", IsEnabledPropertyTranslator);
DefaultTranslators.Add("Padding", PaddingPropertyTranslator);
DefaultTranslators.Add("Visibility", VisibilityPropertyTranslator);
//Note: there's no notification when the ambient cursor changes, so we
//can't do a normal mapping for this and have it work. See the note in
//WinFormsAdapter.Cursor.
DefaultTranslators.Add("Cursor", EmptyPropertyTranslator);
DefaultTranslators.Add("ForceCursor", EmptyPropertyTranslator);
}
/// <summary>
/// Translator for individual property
/// </summary>
[ResourceExposure(ResourceScope.None)]
// Resource consumption: HostUtils.GetBitmapForWindowsFormsHost
[ResourceConsumption(ResourceScope.Machine, ResourceScope.Machine)]
private void BackgroundPropertyTranslator(object host, string propertyName, object value)
{
SWM.Brush brush = value as SWM.Brush;
if (value == null)
{
//If they passed null (not to be confused with "passed us a non-null non-Brush"),
//we should look up our parent chain.
DependencyObject parent = host as WindowsFormsHost;
do
{
brush = (Brush)parent.GetValue(SWC.Control.BackgroundProperty);
parent = VisualTreeHelper.GetParent(parent);
} while (parent != null && brush == null);
}
WinFormsAdapter adapter = GetAdapter(host);
if (adapter != null && brush != null)
{
WindowsFormsHost windowsFormsHost = host as WindowsFormsHost;
if (windowsFormsHost != null)
{
SWF.Control child = windowsFormsHost.Child;
if (HostUtils.BrushIsSolidOpaque(brush))
{
bool ignore;
SD.Color wfColor = WindowsFormsHostPropertyMap.TranslateSolidOrGradientBrush(brush, out ignore);
adapter.BackColor = wfColor;
}
else
{
SD.Bitmap backgroundImage = HostUtils.GetBitmapForWindowsFormsHost(windowsFormsHost, brush);
HostUtils.SetBackgroundImage(adapter, child, backgroundImage);
}
}
}
}
/// <summary>
/// Translator for individual property
/// </summary>
private void FlowDirectionPropertyTranslator(object host, string propertyName, object value)
{
SWF.Control childControl = GetChildControl(host, FlowDirectionPropertyTranslator, value);
WinFormsAdapter adapter = GetAdapter(host);
if (adapter != null && childControl != null)
{
if (value is SW.FlowDirection)
{
const BindingFlags memberAccess = BindingFlags.Public | BindingFlags.Instance;
//use reflection to see if this control supports the RightToLeftLayout property
PropertyInfo propertyInfo = childControl.GetType().GetProperty("RightToLeftLayout", memberAccess);
switch ((SW.FlowDirection)value)
{
case SW.FlowDirection.RightToLeft:
adapter.RightToLeft = SWF.RightToLeft.Yes;
if (propertyInfo != null) { propertyInfo.SetValue(childControl, true, null); }
break;
case SW.FlowDirection.LeftToRight:
adapter.RightToLeft = SWF.RightToLeft.No;
if (propertyInfo != null) { propertyInfo.SetValue(childControl, false, null); }
break;
}
}
}
}
/// <summary>
/// Translator for individual property
/// </summary>
[ResourceExposure(ResourceScope.None)]
// Resource consumption: new Font
[ResourceConsumption(ResourceScope.Process, ResourceScope.Process)]
private void FontFamilyPropertyTranslator(object host, string propertyName, object value)
{
WinFormsAdapter adapter = GetAdapter(host);
if (adapter != null)
{
SWM.FontFamily family = value as SWM.FontFamily;
if (family != null)
{
string familySource = family.Source;
adapter.Font = new SD.Font(familySource, adapter.Font.Size, adapter.Font.Style);
}
}
}
/// <summary>
/// Translator for individual property
/// </summary>
[ResourceExposure(ResourceScope.None)]
// Resource consumption: new Font
[ResourceConsumption(ResourceScope.Process, ResourceScope.Process)]
private void FontStylePropertyTranslator(object host, string propertyName, object value)
{
WinFormsAdapter adapter = GetAdapter(host);
if (adapter != null)
{
if (value is SW.FontStyle)
{
SD.FontStyle style;
if ((SW.FontStyle)value == SW.FontStyles.Normal)
{
style = SD.FontStyle.Regular;
}
else
{
style = SD.FontStyle.Italic;
}
if (HostUtils.FontWeightIsBold(Host.FontWeight))
{
style |= SD.FontStyle.Bold;
}
adapter.Font = new SD.Font(CurrentFontFamily, CurrentFontSize, style);
}
}
}
/// <summary>
/// Translator for individual property
/// </summary>
[ResourceExposure(ResourceScope.None)]
// Resource consumption: new Font
[ResourceConsumption(ResourceScope.Process, ResourceScope.Process)]
private void FontWeightPropertyTranslator(object host, string propertyName, object value)
{
WinFormsAdapter adapter = GetAdapter(host);
if (adapter != null && value is SW.FontWeight)
{
SD.FontStyle style = CurrentFontStyle;
if (HostUtils.FontWeightIsBold((SW.FontWeight)value))
{
style |= SD.FontStyle.Bold;
}
adapter.Font = new SD.Font(CurrentFontFamily, CurrentFontSize, style);
}
}
/// <summary>
/// Translator for individual property
/// </summary>
[ResourceExposure(ResourceScope.None)]
// Resource consumption: new Font
[ResourceConsumption(ResourceScope.Process, ResourceScope.Process)]
private void FontSizePropertyTranslator(object host, string propertyName, object value)
{
WinFormsAdapter adapter = GetAdapter(host);
if (adapter != null && value is double)
{
double pointSize = Convert.FontSizeToSystemDrawing((double)value);
adapter.Font = new SD.Font(CurrentFontFamily, (float)pointSize, CurrentFontStyle);
}
}
/// <summary>
/// Translator for individual property
/// </summary>
private void ForegroundPropertyTranslator(object host, string propertyName, object value)
{
SWM.Brush brush = value as SWM.Brush;
if (brush != null)
{
bool defined;
SD.Color wfColor = WindowsFormsHostPropertyMap.TranslateSolidOrGradientBrush(brush, out defined);
if (defined)
{
WinFormsAdapter adapter = GetAdapter(host);
if (adapter != null)
{
adapter.ForeColor = wfColor;
}
}
}
}
/// <summary>
/// Translator for individual property
/// </summary>
private void IsEnabledPropertyTranslator(object host, string propertyName, object value)
{
WinFormsAdapter adapter = GetAdapter(host);
if (adapter != null && value is bool)
{
adapter.Enabled = (bool)value;
}
}
/// <summary>
/// Translator for individual property
/// </summary>
private void PaddingPropertyTranslator(object host, string propertyName, object value)
{
SWF.Control childControl = GetChildControl(host, PaddingPropertyTranslator, value);
WinFormsAdapter adapter = GetAdapter(host);
if (adapter != null && childControl != null)
{
if (value is SW.Thickness)
{
childControl.Padding = Convert.ToSystemWindowsFormsPadding((SW.Thickness)value);
}
}
}
/// <summary>
/// Translator for Visibility property
/// </summary>
private void VisibilityPropertyTranslator(object host, string propertyName, object value)
{
if (value is SW.Visibility)
{
WindowsFormsHost windowsFormsHost = host as WindowsFormsHost;
if (windowsFormsHost != null && windowsFormsHost.Child != null)
{
//Visible for Visible, not Visible for Hidden/Collapsed
windowsFormsHost.Child.Visible = ((SW.Visibility)value == SW.Visibility.Visible);
}
}
}
/// <summary>
/// The WindowsFormsHost we're mapping
/// </summary>
private WindowsFormsHost Host
{
get
{
return (WindowsFormsHost)SourceObject;
}
}
/// <summary>
/// Gets the child control if we have one. If we don't, cache the translator
/// and property value so that we can restore them when the control is set.
/// <param name="host">WindowsFormsHost</param>
/// <param name="translator">The delegate to be called if this property is to be set later</param>
/// <param name="value">The value the property will have if it needs to be set later</param>
/// </summary>
private SWF.Control GetChildControl(object host, PropertyTranslator translator, object value)
{
WindowsFormsHost windowsFormsHost = host as WindowsFormsHost;
if (windowsFormsHost == null || windowsFormsHost.Child == null)
{
return null;
}
return windowsFormsHost.Child;
}
/// <summary>
/// The HostContainer, if any.
/// </summary>
/// <param name="host">WindowsFormsHost</param>
internal static WinFormsAdapter GetAdapter(object host)
{
WindowsFormsHost windowsFormsHost = host as WindowsFormsHost;
if (windowsFormsHost == null)
{
return null;
}
return windowsFormsHost.HostContainerInternal;
}
/// <summary>
/// Translate the fontsize of this WFH to a font size equivalent to one
/// that a SD.Font would use.
/// </summary>
private float CurrentFontSize
{
get
{
return (float)(Convert.FontSizeToSystemDrawing(Host.FontSize));
}
}
/// <summary>
/// Translate the FontStyle and FontWeight of this WFH to a SD.Font
/// equivalent.
/// </summary>
private SD.FontStyle CurrentFontStyle
{
get
{
SD.FontStyle style;
if (Host.FontStyle == SW.FontStyles.Normal)
{
style = SD.FontStyle.Regular;
}
else
{
style = SD.FontStyle.Italic;
}
if (HostUtils.FontWeightIsBold(Host.FontWeight))
{
style |= SD.FontStyle.Bold;
}
return style;
}
}
/// <summary>
/// The current FontFamily of this WFH
/// </summary>
private string CurrentFontFamily
{
get
{
return Host.FontFamily.Source;
}
}
/// <summary>
/// This method translates Avalon SD.Brushes into
/// WindowsForms color objects
/// </summary>
private static SD.Color TranslateSolidOrGradientBrush(SWM.Brush brush, out bool defined)
{
SWM.Color brushColor;
SD.Color wfColor = SD.Color.Empty;
defined = false;
SWM.SolidColorBrush solidColorBrush = brush as SWM.SolidColorBrush;
if (solidColorBrush != null)
{
brushColor = solidColorBrush.Color;
defined = true;
wfColor = Convert.ToSystemDrawingColor(brushColor);
}
else
{
SWM.GradientBrush gradientBrush = brush as SWM.GradientBrush;
if (gradientBrush != null)
{
SWM.GradientStopCollection grads = gradientBrush.GradientStops;
if (grads != null)
{
SWM.GradientStop firstStop = grads[0];
if (firstStop != null)
{
brushColor = firstStop.Color;
defined = true;
wfColor = Convert.ToSystemDrawingColor(brushColor);
}
}
}
}
return wfColor;
}
}
}
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