Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / Orcas / NetFXw7 / wpf / src / WinFormsIntegration / System / Windows / Integration / ElementHost.cs / 1 / ElementHost.cs
using System.Collections.Generic;
using System.ComponentModel;
using System.ComponentModel.Design.Serialization;
using System.Diagnostics;
using System.Runtime.InteropServices;
using System.Diagnostics.CodeAnalysis;
using System.Globalization;
using System.Windows.Documents;
using System.Windows.Interop;
using System.Windows.Markup;
using System.Windows.Media;
using System.Security.Permissions;
using MS.Win32;
using SD = System.Drawing;
using SWF = System.Windows.Forms;
using SW = System.Windows;
using SWC = System.Windows.Controls;
using SWM = System.Windows.Media;
using SWMI = System.Windows.Media.Imaging;
using SWI = System.Windows.Input;
namespace System.Windows.Forms.Integration
{
///
/// A Windows Forms control that can be used to host a Windows Presentation
/// Foundation element.
///
[System.ComponentModel.DesignerCategory("code")]
[ContentProperty("Child")]
[DefaultEvent("ChildChanged")]
[Designer("WindowsFormsIntegration.Design.ElementHostDesigner, WindowsFormsIntegration.Design, Version=1.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]
[DesignerSerializer("WindowsFormsIntegration.Design.ElementHostCodeDomSerializer, WindowsFormsIntegration.Design, Version=1.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a",
"System.ComponentModel.Design.Serialization.CodeDomSerializer, System.Design, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]
public class ElementHost : Control
{
private HwndSource _hwndSource;
///
/// The decorator is used to provide an Adorner layer which is needed to show UI highlights
/// for focus etc. In the pure-Avalon case, this would be handled by Window
///
private AdornerDecorator _decorator;
private AvalonAdapter _hostContainerInternal;
private bool _backColorTransparent;
private SW.UIElement _child;
private bool _processingWmInputLangChanged; // Flag to prevent re-entrancy when processing WM_INPUTLANGCHANGED
#region Constructors
///
/// Initializes a new instance of the ElementHost class.
///
///
/// Overridden to plug the Avalon control into WinForm's layout engines.
///
[PermissionSet(SecurityAction.Demand, Name = "FullTrust")]
public ElementHost()
: base()
{
this._hostContainerInternal = new AvalonAdapter(this);
this._decorator = new AdornerDecorator();
_decorator.Child = this._hostContainerInternal;
SetStyle(SWF.ControlStyles.SupportsTransparentBackColor, true);
SetStyle(SWF.ControlStyles.UserPaint, true);
SetStyle(SWF.ControlStyles.AllPaintingInWmPaint, true);
System.Windows.Input.FocusManager.SetIsFocusScope(this._decorator, true);
//For keyboarding, this listens for WM_CHAR events not handled, so that mnemonics
//that are pressed without the ALT key can be handled.
SWI.InputManager.Current.PostProcessInput += InputManager_PostProcessInput;
this.SetAutoSizeMode(AutoSizeMode.GrowAndShrink);
StartPropertyMapping();
SizeChanged += new EventHandler(CallUpdateBackground);
LocationChanged += new EventHandler(CallUpdateBackground);
}
#endregion
#region Layout
///
/// Overrides the base class implementation of GetPreferredSize to provide
/// correct layout behavior for the hosted Windows Presentation Foundation elements.
///
public override SD.Size GetPreferredSize(SD.Size proposedSize)
{
if (Disposing)
{
return base.GetPreferredSize(proposedSize);
}
proposedSize = HostUtils.IntersectSizes(HostUtils.ConvertZeroOrOneToUnbounded(proposedSize), HostUtils.ConvertZeroToUnbounded(MaximumSize));
proposedSize = HostUtils.UnionSizes(proposedSize, MinimumSize);
// Apply the child's scaling, if any
Vector scale = (Child == null ? new Vector(1d, 1d) : HostUtils.GetScale(Child));
Size constraints = Convert.ToSystemWindowsSize(proposedSize, scale);
// At this point, an unbounded value is represented by Int32.MaxValue: WPF wants double.PositiveInfinity.
if (constraints.Width == Int32.MaxValue) { constraints.Width = Double.PositiveInfinity; }
if (constraints.Height == Int32.MaxValue) { constraints.Height = Double.PositiveInfinity; }
// Request that control recompute desired size with new constraints.
_decorator.Measure(constraints);
SD.Size prefSize = Convert.ToSystemDrawingSize(_decorator.DesiredSize, scale);
// WindowsForms guarantees results will be bounded by control Min/MaxSize
prefSize = HostUtils.IntersectSizes(prefSize, HostUtils.ConvertZeroToUnbounded(MaximumSize));
prefSize = HostUtils.UnionSizes(prefSize, MinimumSize);
Debug.WriteLineIf(_traceLayout.TraceInfo, String.Format(CultureInfo.CurrentCulture, "AvalonAdapter({0}): MeasureOverride (constraint={1},result={2})", this.Name, proposedSize, prefSize));
return prefSize;
}
///
/// Gets the default size of the control.
///
protected override System.Drawing.Size DefaultSize
{
get
{
return new SD.Size(200, 100);
}
}
///
/// Gets or sets a value indicating whether the control is
/// automatically resized to display its entire contents.
///
[Browsable(true), EditorBrowsable(EditorBrowsableState.Always)]
public override bool AutoSize
{
get
{
return base.AutoSize;
}
set
{
base.AutoSize = value;
}
}
#endregion Layout
#region Containership
///
/// Gets the parent container of the hosted Windows Presentation Foundation element.
///
[Browsable(false)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
public SWC.Panel HostContainer
{
get { return HostContainerInternal; }
}
internal HwndSource HwndSource
{
get { return _hwndSource; }
}
///
/// Indicates that the Child property has been changed.
///
public event EventHandler ChildChanged;
///
/// Gets or sets the UIElement hosted by the ElementHost control.
///
[Browsable(false)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
public SW.UIElement Child
{
get
{
return _child;
}
set
{
UIElement oldValue = Child;
#pragma warning disable 1634, 1691
#pragma warning disable 56526
_child = value;
#pragma warning restore 1634, 1691, 56526
HostContainerInternal.Children.Clear();
if (_child != null)
{
HostContainerInternal.Children.Add(_child);
_propertyMap.ApplyAll();
InitializeChildProperties();
}
OnChildChanged(oldValue);
}
}
protected override bool CanEnableIme
{
get
{
if (this.Child == null)
{
return false;
}
return base.CanEnableIme;
}
}
///
/// If focus on HwndSource, we need to return true here.
///
public override bool Focused
{
get
{
if( IsHandleCreated )
{
// observe that the EH.Child may be null and still it has an HwndSource.
IntPtr focusHandle = UnsafeNativeMethods.GetFocus();
return (focusHandle == this.Handle || (this.HwndSource != null && focusHandle == this.HwndSource.Handle));
}
return false;
}
}
protected override SWF.ImeMode ImeModeBase
{
get
{
return this.CanEnableIme ? base.ImeModeBase : ImeMode.Disable;
}
set
{
base.ImeModeBase = value;
// When the ImeMode is set to ImeMode.NoControl, Winforms stops raising the ImeModeChanged event
// on the control, we need to notify the property mapper explicitly.
if (value == SWF.ImeMode.NoControl)
{
this.OnPropertyChangedImeMode(this, EventArgs.Empty);
}
}
}
private void OnChildChanged(UIElement oldChild)
{
if (this.Child != null)
{
SyncHwndSrcImeStatus();
}
if (ChildChanged != null)
{
ChildChanged(this, new ChildChangedEventArgs(oldChild));
}
}
///
/// Raises the Leave event.
///
///
protected override void OnLeave(EventArgs e)
{
System.Windows.Input.FocusManager.SetFocusedElement(_decorator, null);
base.OnLeave(e);
}
///
/// Raises the GotFocus event.
///
///
protected override void OnGotFocus(EventArgs e)
{
base.OnGotFocus(e);
SyncHwndSrcImeStatus();
_decorator.Focus();
}
private void InitializeChildProperties()
{
FrameworkElement childFrameworkElement = Child as FrameworkElement;
if (childFrameworkElement != null)
{
childFrameworkElement.SizeChanged += new SizeChangedEventHandler(childFrameworkElement_SizeChanged);
childFrameworkElement.Height = double.NaN;
childFrameworkElement.Width = double.NaN;
childFrameworkElement.Margin = new Thickness(0d);
childFrameworkElement.VerticalAlignment = SW.VerticalAlignment.Stretch;
childFrameworkElement.HorizontalAlignment = SW.HorizontalAlignment.Stretch;
DesignerProperties.SetIsInDesignMode(childFrameworkElement, this.DesignMode);
Vector scale = HostUtils.GetScale(childFrameworkElement);
SD.Size maxElementSize = Convert.ToSystemDrawingSize(new Size(childFrameworkElement.MaxWidth, childFrameworkElement.MaxHeight), scale);
SD.Size priorMaxSize = HostUtils.ConvertZeroToUnbounded(MaximumSize);
int maxWidth = Math.Min(priorMaxSize.Width, maxElementSize.Width);
int maxHeight = Math.Min(priorMaxSize.Height, maxElementSize.Height);
MaximumSize = HostUtils.ConvertUnboundedToZero(new SD.Size(maxWidth, maxHeight));
}
}
///
/// Raises the VisibleChanged event.
///
///
protected override void OnVisibleChanged(EventArgs e)
{
base.OnVisibleChanged(e);
UpdateBackground();
}
void CallUpdateBackground(object sender, EventArgs e)
{
UpdateBackground();
}
void UpdateBackground()
{
OnPropertyChanged("BackgroundImage", BackgroundImage); //Update the background
}
void childFrameworkElement_SizeChanged(object sender, SizeChangedEventArgs e)
{
if (AutoSize)
{
PerformLayout();
}
}
internal AvalonAdapter HostContainerInternal
{
get
{
return _hostContainerInternal;
}
}
#endregion Containership
#region Rendering
///
/// Gets or sets a value indicating whether the hosted element has a transparent background.
///
[DefaultValue(false)]
public bool BackColorTransparent
{
get { return _backColorTransparent; }
set
{
_backColorTransparent = value;
UpdateBackground();
}
}
///
/// Hide GDI painting because the HwndTarget is going to just bitblt the root
/// visual on top of everything.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
protected override void OnPaint(SWF.PaintEventArgs e)
{
base.OnPaint(e);
}
///
/// Paint our parent's background into an offscreen HBITMAP.
/// We then draw this as our background in the hosted Avalon
/// control's Render() method to support WinForms->Avalon transparency.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
protected override void OnPaintBackground(SWF.PaintEventArgs pevent)
{
base.OnPaintBackground(pevent);
_decorator.InvalidateVisual();
}
internal void InvokePaintBackgroundAndPaint(SWF.Control control, SWF.PaintEventArgs args)
{
this.InvokePaintBackground(control, args);
this.InvokePaint(control, args);
}
///
/// Renders the control using the provided Graphics object.
///
///
protected override void OnPrint(PaintEventArgs e)
{
SWMI.RenderTargetBitmap renderBitmap = HostUtils.GetBitmapForFrameworkElement(_decorator);
if (renderBitmap != null)
{
using (SD.Bitmap bitmap = HostUtils.GetBitmapFromRenderTargetBitmap(this, renderBitmap, new Point(0, 0)))
{
e.Graphics.DrawImage(bitmap, SD.Point.Empty);
}
}
}
#endregion rendering
#region Keyboarding
///
/// Activates the hosted element.
///
protected override void Select(bool directed, bool forward)
{
if (directed == true)
{
SWI.TraversalRequest request = new SWI.TraversalRequest(forward
? SWI.FocusNavigationDirection.First
: SWI.FocusNavigationDirection.Last);
//Currently ignore TabInto's return value
(_hwndSource as IKeyboardInputSink).TabInto(request);
}
else
{
if (Child != null)
{
Child.Focus();
}
}
base.Select(directed, forward);
}
///
/// Processes a command key, ensuring that the hosted element has an
/// opportunity to handle the command before normal Windows Forms processing.
///
///
/// This will try see if the pressed key is an Avalon accelerator, if so it returns TRUE,
/// which tells WinForms to stop trying to process this key.
///
[SecurityPermission(SecurityAction.LinkDemand, Flags = SecurityPermissionFlag.UnmanagedCode)]
protected override bool ProcessCmdKey(ref System.Windows.Forms.Message msg, System.Windows.Forms.Keys keyData)
{
MSG msg2 = Convert.ToSystemWindowsInteropMSG(msg);
SWI.ModifierKeys modifiers = Convert.ToSystemWindowsInputModifierKeys(keyData);
if ((_hwndSource as IKeyboardInputSink).TranslateAccelerator(ref msg2, modifiers))
{
return true;
}
return base.ProcessCmdKey(ref msg, keyData);
}
///
/// Processes a mnemonic character, ensuring that the hosted element has an opportunity to handle the mnemonic before
/// normal Windows Forms processing.
///
///
/// This will try see if the pressed key is an Avalon accelerator, if so it tries
/// to process the key, which may move focus to the Avalon control.
///
[UIPermission(SecurityAction.LinkDemand, Window = UIPermissionWindow.AllWindows)]
protected override bool ProcessMnemonic(char charCode)
{
string upperKey = Char.ToUpper(charCode, CultureInfo.CurrentCulture).ToString();
if (SWI.AccessKeyManager.IsKeyRegistered(_hwndSource, upperKey))
{
// ProcessKey doesn't return enough information for us to handle
// mnemonic cycling reliably. I.e. we can't tell the difference
// between a key which wasn't processed (returns false) from the
// case where there is just one element with this key registered
// (also returns false).
SWI.AccessKeyManager.ProcessKey(_hwndSource, upperKey, false);
return true;
}
else
{
return base.ProcessMnemonic(charCode);
}
}
///
/// Ensures that all WM_CHAR key messages are forwarded to the hosted element.
///
///
/// Grab all WM_CHAR messages as text input to ensure they're sent to
/// Avalon. If Avalon doesn't handle the message, we will call
/// ProcessDialogChar later on.
///
protected override bool IsInputChar(char charCode)
{
return true;
}
///
/// Catch WM_CHAR messages which weren't handled by Avalon
/// (including mnemonics which were typed without the "Alt" key)
///
private void InputManager_PostProcessInput(object sender, SWI.ProcessInputEventArgs e)
{
IKeyboardInputSink ikis = _hwndSource as IKeyboardInputSink;
if (ikis == null || !ikis.HasFocusWithin())
{
return;
}
if (!e.StagingItem.Input.Handled && e.StagingItem.Input.RoutedEvent == SWI.TextCompositionManager.TextInputEvent)
{
SWI.TextCompositionEventArgs te = (SWI.TextCompositionEventArgs)e.StagingItem.Input;
string text = te.Text;
if (string.IsNullOrEmpty(text))
{
text = te.SystemText;
}
if (!string.IsNullOrEmpty(text))
{
e.StagingItem.Input.Handled = this.ProcessDialogChar(text[0]);
}
}
}
///
/// Enables a window to receive keyboard messages correctly when it is opened modelessly from Windows Forms.
///
/// The System.Windows.Window which will be opened modelessly.
[PermissionSet(SecurityAction.Demand, Name = "FullTrust")]
public static void EnableModelessKeyboardInterop(SW.Window window)
{
ApplicationInterop.EnableModelessKeyboardInterop(window);
}
#endregion Keyboarding
#region Window Handling & Misc
///
/// Raises the HandleCreated event.
///
protected override void OnHandleCreated(EventArgs e)
{
if (_hwndSource != null)
{
DisposeHWndSource();
}
SWF.CreateParams cp = this.CreateParams;
HwndSourceParameters HWSParam = new HwndSourceParameters(this.Text, cp.Width, cp.Height);
HWSParam.WindowClassStyle = cp.ClassStyle;
HWSParam.WindowStyle = cp.Style;
HWSParam.ExtendedWindowStyle = cp.ExStyle;
HWSParam.ParentWindow = Handle;
HWSParam.HwndSourceHook = HwndSourceHook;
_hwndSource = new HwndSource(HWSParam);
_hwndSource.RootVisual = _decorator;
//For keyboarding: Set the IKeyboardInputSite so that keyboard interop works...
(_hwndSource as IKeyboardInputSink).KeyboardInputSite = (HostContainerInternal as IKeyboardInputSite);
base.OnHandleCreated(e);
}
///
/// Hook for the HwndSource.WndProc.
///
private IntPtr HwndSourceHook(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
{
switch (msg)
{
case NativeMethods.WM_SETFOCUS:
if (wParam != Handle)
{
// wParam != Handle means focus was lost by a window different from this (EH).
// The message was sent directly to the HwndSource (by direct mouse input).
// We need to notify Winforms so it can set the active control and in turn
// notify Control.ActiveXImpl in case we are hosted in an unmanaged app.
// EH will set focus back to the WPF control from its OnGotFocus method.
this.Focus();
}
break;
case NativeMethods.WM_KILLFOCUS:
if (!this.Focused)
{
UnsafeNativeMethods.SendMessage(new HandleRef(this, this.Handle), msg, wParam, lParam);
}
break;
case NativeMethods.WM_INPUTLANGCHANGE:
OnHwndSrcWmInputLangChange(msg, wParam, lParam, ref handled);
break;
case NativeMethods.WM_IME_NOTIFY:
OnHwndSrcWmImeNotify(msg, wParam, lParam, ref handled);
break;
}
return IntPtr.Zero; // This value depends on the message being processed, see MSDN for the particular message.
}
private void SetHWndSourceWindowPos()
{
if (_hwndSource != null)
{
SafeNativeMethods.SetWindowPos(_hwndSource.Handle, NativeMethods.HWND_TOP, 0, 0, this.Width, this.Height, 0);
}
}
///
/// Synchronizes the HwndSource context status to the ElementHost's
///
internal bool SyncHwndSrcImeStatus()
{
Debug.WriteLineIf(HostUtils.ImeMode.Level >= TraceLevel.Info, "Inside SyncHwndSrcImeStatus(), this = " + this);
Debug.Indent();
bool handled = false;
if (this.HwndSource != null)
{
ImeMode ehImeMode = this.ImeMode != ImeMode.NoControl ? this.ImeMode : SWF.Control.PropagatingImeMode;
ImeMode hsImeMode = SWF.ImeContext.GetImeMode(this.HwndSource.Handle);
SetChildElementsIsImeEnabled(this.Child, ehImeMode != ImeMode.Disable);
if (ehImeMode != hsImeMode)
{
SWF.ImeContext.SetImeStatus(ehImeMode, this.HwndSource.Handle);
}
handled = true;
}
Debug.Unindent();
return handled;
}
///
/// Maps the ImeMode property. This is needed to synchronize the EH IME context with TFS used in WPF.
///
private static void SetChildElementsIsImeEnabled(SW.DependencyObject element, bool isEnabled)
{
if (element == null)
{
return;
}
if (element is SW.IInputElement)
{
Debug.WriteLineIf(HostUtils.ImeMode.Level >= TraceLevel.Verbose, "SetChildElementsIsImeEnabled, element = " + element);
SWI.InputMethod.SetIsInputMethodEnabled(element, isEnabled);
}
// Ideally, setting the top control context mode should suffice as with any other mapped property on EH
// but there is no InputMethodEnabledChanged event for clients to listen to to update child elements.
// we need to traverse the visual tree and do it ourselves.
int childCount = VisualTreeHelper.GetChildrenCount(element);
for (int childIndex = 0; childIndex < childCount; childIndex++)
{
SetChildElementsIsImeEnabled(VisualTreeHelper.GetChild(element, childIndex), isEnabled);
}
}
///
/// Handles HwndSrc WM_INPUTLANGCHANGED.
///
private void OnHwndSrcWmInputLangChange(int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
{
Debug.WriteLineIf(HostUtils.ImeMode.Level >= TraceLevel.Info, "Inside OnHwndSrcWmInputLangChange(), this = " + this);
Debug.Indent();
if (!_processingWmInputLangChanged)
{
_processingWmInputLangChanged = true;
try
{
// IME is being attached, notify the ElementHost to update its handle context, it in turn will pass
// the message to the HwndSource to update its context too.
OnHwndSourceMsgNotifyElementHost(msg, wParam, lParam);
handled = true;
}
finally
{
_processingWmInputLangChanged = false;
}
}
Debug.Unindent();
}
///
/// Handles HwndSrc WM_IME_NOTIFY.
///
private void OnHwndSrcWmImeNotify(int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
{
Debug.WriteLineIf(HostUtils.ImeMode.Level >= TraceLevel.Info, "Inside OnHwndSrcWmImeNotify(), this = " + this);
Debug.Indent();
handled = false;
if (SWF.ImeModeConversion.IsCurrentConversionTableSupported) //
{
if (wParam == (IntPtr)NativeMethods.IMN_SETCONVERSIONMODE || wParam == (IntPtr)NativeMethods.IMN_SETOPENSTATUS)
{
// IME context mode has been changed by interaction or a different IME has been attached,
// notify EH to update its ImeMode property if needed.
ImeMode hsImeMode = SWF.ImeContext.GetImeMode(this.HwndSource.Handle);
ImeMode ehImeMode = this.ImeMode;
if (hsImeMode != ehImeMode)
{
OnHwndSourceMsgNotifyElementHost(msg, wParam, lParam);
}
handled = true;
}
}
Debug.Unindent();
}
///
/// Passes a msg sent to the HwndSource into the ElementHost for preprocessing.
///
private void OnHwndSourceMsgNotifyElementHost(int msg, IntPtr wParam, IntPtr lParam)
{
Debug.WriteLineIf(HostUtils.ImeMode.Level >= TraceLevel.Verbose, "Inside OnHwndSourceMsgNotifyElementHost()");
Debug.Indent();
UnsafeNativeMethods.SendMessage(new HandleRef(this, this.Handle), msg, wParam, lParam);
Debug.Unindent();
}
///
/// Processes Windows messages.
///
///
[SecurityPermission(SecurityAction.InheritanceDemand, Flags = SecurityPermissionFlag.UnmanagedCode),
SecurityPermission(SecurityAction.LinkDemand, Flags = SecurityPermissionFlag.UnmanagedCode)]
protected override void WndProc(ref Message m)
{
switch (m.Msg)
{
case NativeMethods.WM_MOVE:
case NativeMethods.WM_SIZE:
case NativeMethods.WM_WINDOWPOSCHANGED:
case NativeMethods.WM_WINDOWPOSCHANGING:
base.WndProc(ref m);
SetHWndSourceWindowPos();
break;
case NativeMethods.WM_PARENTNOTIFY:
case NativeMethods.WM_REFLECT + NativeMethods.WM_PARENTNOTIFY:
base.WndProc(ref m);
if (HostUtils.LOWORD(m.WParam) == NativeMethods.WM_CREATE)
{
this.BeginInvoke(new MethodInvoker(SetHWndSourceWindowPos));
}
break;
case NativeMethods.WM_SETREDRAW:
if (!DesignMode && m.WParam == IntPtr.Zero)
{
base.WndProc(ref m);
}
break;
case NativeMethods.WM_KILLFOCUS:
// if focus is being set on the HwndSource then we should prevent LostFocus by
// handling this message.
if (this.HwndSource == null || this.HwndSource.Handle != m.WParam)
{
base.WndProc(ref m);
}
break;
default:
base.WndProc(ref m);
break;
}
}
///
/// Scales the parent container and the Windows Forms control.
///
///
///
protected override void ScaleCore(float dx, float dy)
{
TransformGroup layoutTransforms = new TransformGroup();
layoutTransforms.Children.Add(_decorator.LayoutTransform);
layoutTransforms.Children.Add(new ScaleTransform(dx, dy));
_decorator.LayoutTransform = layoutTransforms;
base.ScaleCore(dx, dy);
}
///
/// This initializes the default property mapping for the element host.
/// First: it creates a new PropertyMap to store all the mappings, this
/// is exposed to the user as the PropertyMap property.
/// Second: it forwards all property Changed events that we want to listen to
/// towards the OnPropertyChanged method.
/// Third: it registers several default translators, all of which are handled by
/// the ElementHostPropertyTranslator deligate.
///
private void StartPropertyMapping()
{
_propertyMap = new ElementHostPropertyMap(this);
//This forwards property change notification to OnPropertyChanged, since
//there is no generic way to handle listening to property value changes.
this.BackColorChanged += this.OnPropertyChangedBackColor;
this.BackgroundImageChanged += this.OnPropertyChangedBackgroundImage;
this.BackgroundImageLayoutChanged += this.OnPropertyChangedBackgroundImageLayout;
this.CursorChanged += this.OnPropertyChangedCursor;
this.EnabledChanged += this.OnPropertyChangedEnabled;
this.FontChanged += this.OnPropertyChangedFont;
this.ForeColorChanged += this.OnPropertyChangedForeColor;
this.RightToLeftChanged += this.OnPropertyChangedRightToLeft;
this.VisibleChanged += this.OnPropertyChangedVisible;
//We forward these property changes, but don't do anything with them.
this.AutoSizeChanged += this.OnPropertyChangedAutoSize;
this.BindingContextChanged += this.OnPropertyChangedBindingContext;
this.CausesValidationChanged += this.OnPropertyChangedCausesValidation;
this.ContextMenuChanged += this.OnPropertyChangedContextMenu;
this.ContextMenuStripChanged += this.OnPropertyChangedContextMenuStrip;
this.DockChanged += this.OnPropertyChangedDock;
this.LocationChanged += this.OnPropertyChangedLocation;
this.MarginChanged += this.OnPropertyChangedMargin;
this.PaddingChanged += this.OnPropertyChangedPadding;
this.ParentChanged += this.OnPropertyChangedParent;
this.RegionChanged += this.OnPropertyChangedRegion;
this.SizeChanged += this.OnPropertyChangedSize;
this.TabIndexChanged += this.OnPropertyChangedTabIndex;
this.TabStopChanged += this.OnPropertyChangedTabStop;
this.TextChanged += this.OnPropertyChangedText;
this.ImeModeChanged += this.OnPropertyChangedImeMode;
}
///
/// These delegates just map property changed events to OnPropertyChanged. These are
/// necessary in the WinForms model since there is no common path for property change
/// notification. (Avalon has an OnPropertyChanged method.)
///
private void OnPropertyChangedBackColor(object sender, System.EventArgs e)
{
OnPropertyChanged("BackColor", this.BackColor);
}
private void OnPropertyChangedBackgroundImage(object sender, System.EventArgs e)
{
OnPropertyChanged("BackgroundImage", this.BackgroundImage);
}
private void OnPropertyChangedBackgroundImageLayout(object sender, System.EventArgs e)
{
OnPropertyChanged("BackgroundImageLayout", this.BackgroundImageLayout);
}
private void OnPropertyChangedCursor(object sender, System.EventArgs e)
{
OnPropertyChanged("Cursor", this.Cursor);
}
private void OnPropertyChangedEnabled(object sender, System.EventArgs e)
{
OnPropertyChanged("Enabled", this.Enabled);
}
private void OnPropertyChangedFont(object sender, System.EventArgs e)
{
OnPropertyChanged("Font", this.Font);
}
private void OnPropertyChangedForeColor(object sender, System.EventArgs e)
{
OnPropertyChanged("ForeColor", this.ForeColor);
}
private void OnPropertyChangedRightToLeft(object sender, System.EventArgs e)
{
OnPropertyChanged("RightToLeft", this.RightToLeft);
}
private void OnPropertyChangedTabStop(object sender, System.EventArgs e)
{
OnPropertyChanged("TabStop", this.TabStop);
}
private void OnPropertyChangedVisible(object sender, System.EventArgs e)
{
OnPropertyChanged("Visible", this.Visible);
}
// These properties don't have default mappings, but are added in case anyone wants to add them
private void OnPropertyChangedAutoSize(object sender, System.EventArgs e)
{
OnPropertyChanged("AutoSize", this.AutoSize);
}
private void OnPropertyChangedPadding(object sender, System.EventArgs e)
{
OnPropertyChanged("Padding", this.Padding);
}
private void OnPropertyChangedBindingContext(object sender, System.EventArgs e)
{
OnPropertyChanged("BindingContext", this.BindingContext);
}
private void OnPropertyChangedCausesValidation(object sender, System.EventArgs e)
{
OnPropertyChanged("CausesValidation", this.CausesValidation);
}
private void OnPropertyChangedContextMenu(object sender, System.EventArgs e)
{
OnPropertyChanged("ContextMenu", this.ContextMenu);
}
private void OnPropertyChangedContextMenuStrip(object sender, System.EventArgs e)
{
OnPropertyChanged("ContextMenuStrip", this.ContextMenuStrip);
}
private void OnPropertyChangedDock(object sender, System.EventArgs e)
{
OnPropertyChanged("Dock", this.Dock);
}
private void OnPropertyChangedLocation(object sender, System.EventArgs e)
{
OnPropertyChanged("Location", this.Location);
}
private void OnPropertyChangedMargin(object sender, System.EventArgs e)
{
OnPropertyChanged("Margin", this.Margin);
}
private void OnPropertyChangedParent(object sender, System.EventArgs e)
{
OnPropertyChanged("Parent", this.Parent);
}
private void OnPropertyChangedRegion(object sender, System.EventArgs e)
{
OnPropertyChanged("Region", this.Region);
}
private void OnPropertyChangedSize(object sender, System.EventArgs e)
{
OnPropertyChanged("Size", this.Size);
}
private void OnPropertyChangedTabIndex(object sender, System.EventArgs e)
{
OnPropertyChanged("TabIndex", this.TabIndex);
}
private void OnPropertyChangedText(object sender, System.EventArgs e)
{
OnPropertyChanged("Text", this.Text);
}
private void OnPropertyChangedImeMode(object sender, System.EventArgs e)
{
OnPropertyChanged("ImeMode", this.ImeMode);
}
///
/// Notifies the property map that a property has changed.
///
/// the name of the property which has changed and requires translation
/// the new value of the property
///
/// Putting an InheritanceDemand as a defense-in-depth measure,
/// as this provides a hook to the property system that we don't
/// want exposed under PartialTrust.
///
[UIPermissionAttribute(SecurityAction.InheritanceDemand, Window = UIPermissionWindow.AllWindows)]
public virtual void OnPropertyChanged(string propertyName, object value)
{
if (PropertyMap != null)
{
PropertyMap.OnPropertyChanged(this, propertyName, value);
}
}
///
/// Gets the property map, which determines how setting properties on the
/// ElementHost control affects the hosted Windows Presentation Foundation element.
///
[Browsable(false)]
public PropertyMap PropertyMap
{
get { return _propertyMap; }
}
private ElementHostPropertyMap _propertyMap;
#endregion Property Mapping
#region Hidden Events
///
/// Occurs when the value of the BindingContext property changes.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event EventHandler BindingContextChanged
{
add { base.BindingContextChanged += value; }
remove { base.BindingContextChanged -= value; }
}
///
/// Occurs when the control is clicked.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event EventHandler Click
{
add { base.Click += value; }
remove { base.Click -= value; }
}
///
/// Occurs when the value of the ClientSize property changes.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event EventHandler ClientSizeChanged
{
add { base.ClientSizeChanged += value; }
remove { base.ClientSizeChanged -= value; }
}
///
/// Occurs when a new control is added to the Control.ControlCollection.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event ControlEventHandler ControlAdded
{
add { base.ControlAdded += value; }
remove { base.ControlAdded -= value; }
}
///
/// Occurs when a control is removed from the Control.ControlCollection.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event ControlEventHandler ControlRemoved
{
add { base.ControlRemoved += value; }
remove { base.ControlRemoved -= value; }
}
///
/// Occurs when the value of the Cursor property changes.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event EventHandler CursorChanged
{
add { base.CursorChanged += value; }
remove { base.CursorChanged -= value; }
}
///
/// Occurs when the control is double-clicked.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event EventHandler DoubleClick
{
add { base.DoubleClick += value; }
remove { base.DoubleClick -= value; }
}
///
/// Occurs when a drag-and-drop operation is completed.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event DragEventHandler DragDrop
{
add { base.DragDrop += value; }
remove { base.DragDrop -= value; }
}
///
/// Occurs when an object is dragged into the control's bounds.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event DragEventHandler DragEnter
{
add { base.DragEnter += value; }
remove { base.DragEnter -= value; }
}
///
/// Occurs when an object is dragged out of the control's bounds.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event EventHandler DragLeave
{
add { base.DragLeave += value; }
remove { base.DragLeave -= value; }
}
///
/// Occurs when an object is dragged over the control's bounds.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event DragEventHandler DragOver
{
add { base.DragOver += value; }
remove { base.DragOver -= value; }
}
///
/// Occurs when the control is entered.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event EventHandler Enter
{
add { base.Enter += value; }
remove { base.Enter -= value; }
}
///
/// Occurs when the Font property value changes.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event EventHandler FontChanged
{
add { base.FontChanged += value; }
remove { base.FontChanged -= value; }
}
///
/// Occurs when the ForeColor property value changes.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event EventHandler ForeColorChanged
{
add { base.ForeColorChanged += value; }
remove { base.ForeColorChanged -= value; }
}
///
/// Occurs during a drag operation.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event GiveFeedbackEventHandler GiveFeedback
{
add { base.GiveFeedback += value; }
remove { base.GiveFeedback -= value; }
}
///
/// Occurs when the control receives focus.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event EventHandler GotFocus
{
add { base.GotFocus += value; }
remove { base.GotFocus -= value; }
}
///
/// Occurs when a control's display requires redrawing.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event InvalidateEventHandler Invalidated
{
add { base.Invalidated += value; }
remove { base.Invalidated -= value; }
}
///
/// Occurs when a key is pressed while the control has focus.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event KeyEventHandler KeyDown
{
add { base.KeyDown += value; }
remove { base.KeyDown -= value; }
}
///
/// Occurs when a key is pressed while the control has focus.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event KeyPressEventHandler KeyPress
{
add { base.KeyPress += value; }
remove { base.KeyPress -= value; }
}
///
/// Occurs when a key is released while the control has focus.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event KeyEventHandler KeyUp
{
add { base.KeyUp += value; }
remove { base.KeyUp -= value; }
}
///
/// Occurs when a control should reposition its child controls.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event LayoutEventHandler Layout
{
add { base.Layout += value; }
remove { base.Layout -= value; }
}
///
/// Occurs when the input focus leaves the control.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event EventHandler Leave
{
add { base.Leave += value; }
remove { base.Leave -= value; }
}
///
/// Occurs when the control loses focus.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event EventHandler LostFocus
{
add { base.LostFocus += value; }
remove { base.LostFocus -= value; }
}
///
/// Occurs when the control loses mouse capture.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event EventHandler MouseCaptureChanged
{
add { base.MouseCaptureChanged += value; }
remove { base.MouseCaptureChanged -= value; }
}
///
/// Occurs when the control is clicked by the mouse.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event MouseEventHandler MouseClick
{
add { base.MouseClick += value; }
remove { base.MouseClick -= value; }
}
///
/// Occurs when the control is double clicked by the mouse.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event MouseEventHandler MouseDoubleClick
{
add { base.MouseDoubleClick += value; }
remove { base.MouseDoubleClick -= value; }
}
///
/// Occurs when the mouse pointer is over the control and a mouse button is pressed.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event MouseEventHandler MouseDown
{
add { base.MouseDown += value; }
remove { base.MouseDown -= value; }
}
///
/// Occurs when the mouse pointer enters the control.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event EventHandler MouseEnter
{
add { base.MouseEnter += value; }
remove { base.MouseEnter -= value; }
}
///
/// Occurs when the mouse pointer rests on the control.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event EventHandler MouseHover
{
add { base.MouseHover += value; }
remove { base.MouseHover -= value; }
}
///
/// Occurs when the mouse pointer leaves the control. (
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event EventHandler MouseLeave
{
add { base.MouseLeave += value; }
remove { base.MouseLeave -= value; }
}
///
/// Occurs when the mouse pointer is moved over the control.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event MouseEventHandler MouseMove
{
add { base.MouseMove += value; }
remove { base.MouseMove -= value; }
}
///
/// Occurs when the mouse pointer is over the control and a mouse button is released.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event MouseEventHandler MouseUp
{
add { base.MouseUp += value; }
remove { base.MouseUp -= value; }
}
///
/// Occurs when the mouse wheel moves while the control has focus.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event MouseEventHandler MouseWheel
{
add { base.MouseWheel += value; }
remove { base.MouseWheel -= value; }
}
///
/// Occurs when the control's padding changes.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event EventHandler PaddingChanged
{
add { base.PaddingChanged += value; }
remove { base.PaddingChanged -= value; }
}
///
/// Occurs when the control is redrawn.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event PaintEventHandler Paint
{
add { base.Paint += value; }
remove { base.Paint -= value; }
}
///
/// Occurs before the KeyDown event when a key is pressed while focus is on this control.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event PreviewKeyDownEventHandler PreviewKeyDown
{
add { base.PreviewKeyDown += value; }
remove { base.PreviewKeyDown -= value; }
}
///
/// Occurs during a drag-and-drop operation and enables the drag source to determine
/// whether the drag-and-drop operation should be canceled.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event QueryContinueDragEventHandler QueryContinueDrag
{
add { base.QueryContinueDrag += value; }
remove { base.QueryContinueDrag -= value; }
}
///
/// Occurs when the control is resized.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event EventHandler Resize
{
add { base.Resize += value; }
remove { base.Resize -= value; }
}
///
/// Occurs when the RightToLeft property value changes.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event EventHandler RightToLeftChanged
{
add { base.RightToLeftChanged += value; }
remove { base.RightToLeftChanged -= value; }
}
///
/// Occurs when the Size property value changes.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event EventHandler SizeChanged
{
add { base.SizeChanged += value; }
remove { base.SizeChanged -= value; }
}
///
/// Occurs when the Text property value changes.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event EventHandler TextChanged
{
add { base.TextChanged += value; }
remove { base.TextChanged -= value; }
}
#endregion
#region DEBUG
#if DEBUG
private static readonly TraceSwitch _traceLayout = new TraceSwitch("ElementHostLayout", "Tracks ElementHost layout information.");
#else
private static readonly TraceSwitch _traceLayout = null;
#endif
#endregion DEBUG
}
#region AvalonAdapter
internal class AvalonAdapter : SWC.DockPanel, IDisposable, IKeyboardInputSite
{
private ElementHost _hostControl;
[SuppressMessage("Microsoft.Performance", "CA1810:InitializeReferenceTypeStaticFieldsInline")]
static AvalonAdapter()
{
//These properties define how tabbing occurs in the DockPanel. To be most like
//WinForms these are set to use Continue mode as the default.
//
SWI.KeyboardNavigation.DirectionalNavigationProperty.OverrideMetadata(
typeof(AvalonAdapter),
new FrameworkPropertyMetadata(SWI.KeyboardNavigationMode.Continue));
SWI.KeyboardNavigation.TabNavigationProperty.OverrideMetadata(
typeof(AvalonAdapter),
new FrameworkPropertyMetadata(SWI.KeyboardNavigationMode.Continue));
}
///
/// Creates the Avalon control we use to host
/// other WinForms control in Avalon.
///
public AvalonAdapter(ElementHost hostControl)
{
_hostControl = hostControl;
}
///
/// unsink our events
///
public void Dispose()
{
_hostControl = null;
}
// used to force invalidation of the avalon control's client area.
public static readonly DependencyProperty ForceInvalidateProperty =
DependencyProperty.Register(
"ForceInvalidate",
typeof(bool),
typeof(AvalonAdapter),
new FrameworkPropertyMetadata(
false,
FrameworkPropertyMetadataOptions.AffectsRender));
private static object OnGetForceInvalidate(DependencyObject d)
{
return ((AvalonAdapter)d).ForceInvalidate;
}
///
/// This property is toggled by ElementHost to force the hosted
/// Avalon control to redraw itself
///
public bool ForceInvalidate
{
get { return (bool)GetValue(ForceInvalidateProperty); }
set { SetValue(ForceInvalidateProperty, value); }
}
///
/// This is a transparency optimization. It looks up the SWF visual heirarchy to
/// find the first opaque control. It then uses this color as the background for
/// OnRender. This doesn't work all the time, but is much faster than the bitmap
/// conversion.
///
/// The current control
/// The first opaque color found, or Color.Empty if none is found
private static SD.Color FindSolidColorParent(Control whichControl)
{
Control control = whichControl;
while (control.Parent != null)
{
control = control.Parent;
if (control.BackColor != SD.Color.Empty && control.BackColor.A == 255)
{
return control.BackColor;
}
}
return SD.Color.Empty;
}
#region IKeyboardInputSite
public void Unregister()
{
}
public bool OnNoMoreTabStops(SWI.TraversalRequest request)
{
//Tabbing out of hosted elements
//Select the next control
bool forward = true;
Debug.Assert(request != null, "request was null!");
if (request != null)
{
switch (request.FocusNavigationDirection)
{
case System.Windows.Input.FocusNavigationDirection.Down:
case System.Windows.Input.FocusNavigationDirection.Right:
case System.Windows.Input.FocusNavigationDirection.Next:
forward = true;
break;
case System.Windows.Input.FocusNavigationDirection.Up:
case System.Windows.Input.FocusNavigationDirection.Left:
case System.Windows.Input.FocusNavigationDirection.Previous:
forward = false;
break;
case System.Windows.Input.FocusNavigationDirection.First:
case System.Windows.Input.FocusNavigationDirection.Last:
break;
default:
Debug.Assert(false, "Unknown FocusNavigationDirection");
break;
}
}
if (_hostControl != null)
{
// Get _hostControl's top-most parent.
Control topMostParent = _hostControl;
while (topMostParent.Parent != null)
{
topMostParent = topMostParent.Parent;
}
return topMostParent.SelectNextControl(_hostControl, forward, true, true, true);
}
return false;
}
public IKeyboardInputSink Sink
{
get
{
return (_hostControl.HwndSource as IKeyboardInputSink);
}
}
#endregion IKeyboardInputSite
protected override System.Windows.Automation.Peers.AutomationPeer OnCreateAutomationPeer()
{
return new ElementHostAutomationPeer(this);
}
}
#endregion AvalonAdapter
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
using System.Collections.Generic;
using System.ComponentModel;
using System.ComponentModel.Design.Serialization;
using System.Diagnostics;
using System.Runtime.InteropServices;
using System.Diagnostics.CodeAnalysis;
using System.Globalization;
using System.Windows.Documents;
using System.Windows.Interop;
using System.Windows.Markup;
using System.Windows.Media;
using System.Security.Permissions;
using MS.Win32;
using SD = System.Drawing;
using SWF = System.Windows.Forms;
using SW = System.Windows;
using SWC = System.Windows.Controls;
using SWM = System.Windows.Media;
using SWMI = System.Windows.Media.Imaging;
using SWI = System.Windows.Input;
namespace System.Windows.Forms.Integration
{
///
/// A Windows Forms control that can be used to host a Windows Presentation
/// Foundation element.
///
[System.ComponentModel.DesignerCategory("code")]
[ContentProperty("Child")]
[DefaultEvent("ChildChanged")]
[Designer("WindowsFormsIntegration.Design.ElementHostDesigner, WindowsFormsIntegration.Design, Version=1.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]
[DesignerSerializer("WindowsFormsIntegration.Design.ElementHostCodeDomSerializer, WindowsFormsIntegration.Design, Version=1.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a",
"System.ComponentModel.Design.Serialization.CodeDomSerializer, System.Design, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]
public class ElementHost : Control
{
private HwndSource _hwndSource;
///
/// The decorator is used to provide an Adorner layer which is needed to show UI highlights
/// for focus etc. In the pure-Avalon case, this would be handled by Window
///
private AdornerDecorator _decorator;
private AvalonAdapter _hostContainerInternal;
private bool _backColorTransparent;
private SW.UIElement _child;
private bool _processingWmInputLangChanged; // Flag to prevent re-entrancy when processing WM_INPUTLANGCHANGED
#region Constructors
///
/// Initializes a new instance of the ElementHost class.
///
///
/// Overridden to plug the Avalon control into WinForm's layout engines.
///
[PermissionSet(SecurityAction.Demand, Name = "FullTrust")]
public ElementHost()
: base()
{
this._hostContainerInternal = new AvalonAdapter(this);
this._decorator = new AdornerDecorator();
_decorator.Child = this._hostContainerInternal;
SetStyle(SWF.ControlStyles.SupportsTransparentBackColor, true);
SetStyle(SWF.ControlStyles.UserPaint, true);
SetStyle(SWF.ControlStyles.AllPaintingInWmPaint, true);
System.Windows.Input.FocusManager.SetIsFocusScope(this._decorator, true);
//For keyboarding, this listens for WM_CHAR events not handled, so that mnemonics
//that are pressed without the ALT key can be handled.
SWI.InputManager.Current.PostProcessInput += InputManager_PostProcessInput;
this.SetAutoSizeMode(AutoSizeMode.GrowAndShrink);
StartPropertyMapping();
SizeChanged += new EventHandler(CallUpdateBackground);
LocationChanged += new EventHandler(CallUpdateBackground);
}
#endregion
#region Layout
///
/// Overrides the base class implementation of GetPreferredSize to provide
/// correct layout behavior for the hosted Windows Presentation Foundation elements.
///
public override SD.Size GetPreferredSize(SD.Size proposedSize)
{
if (Disposing)
{
return base.GetPreferredSize(proposedSize);
}
proposedSize = HostUtils.IntersectSizes(HostUtils.ConvertZeroOrOneToUnbounded(proposedSize), HostUtils.ConvertZeroToUnbounded(MaximumSize));
proposedSize = HostUtils.UnionSizes(proposedSize, MinimumSize);
// Apply the child's scaling, if any
Vector scale = (Child == null ? new Vector(1d, 1d) : HostUtils.GetScale(Child));
Size constraints = Convert.ToSystemWindowsSize(proposedSize, scale);
// At this point, an unbounded value is represented by Int32.MaxValue: WPF wants double.PositiveInfinity.
if (constraints.Width == Int32.MaxValue) { constraints.Width = Double.PositiveInfinity; }
if (constraints.Height == Int32.MaxValue) { constraints.Height = Double.PositiveInfinity; }
// Request that control recompute desired size with new constraints.
_decorator.Measure(constraints);
SD.Size prefSize = Convert.ToSystemDrawingSize(_decorator.DesiredSize, scale);
// WindowsForms guarantees results will be bounded by control Min/MaxSize
prefSize = HostUtils.IntersectSizes(prefSize, HostUtils.ConvertZeroToUnbounded(MaximumSize));
prefSize = HostUtils.UnionSizes(prefSize, MinimumSize);
Debug.WriteLineIf(_traceLayout.TraceInfo, String.Format(CultureInfo.CurrentCulture, "AvalonAdapter({0}): MeasureOverride (constraint={1},result={2})", this.Name, proposedSize, prefSize));
return prefSize;
}
///
/// Gets the default size of the control.
///
protected override System.Drawing.Size DefaultSize
{
get
{
return new SD.Size(200, 100);
}
}
///
/// Gets or sets a value indicating whether the control is
/// automatically resized to display its entire contents.
///
[Browsable(true), EditorBrowsable(EditorBrowsableState.Always)]
public override bool AutoSize
{
get
{
return base.AutoSize;
}
set
{
base.AutoSize = value;
}
}
#endregion Layout
#region Containership
///
/// Gets the parent container of the hosted Windows Presentation Foundation element.
///
[Browsable(false)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
public SWC.Panel HostContainer
{
get { return HostContainerInternal; }
}
internal HwndSource HwndSource
{
get { return _hwndSource; }
}
///
/// Indicates that the Child property has been changed.
///
public event EventHandler ChildChanged;
///
/// Gets or sets the UIElement hosted by the ElementHost control.
///
[Browsable(false)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
public SW.UIElement Child
{
get
{
return _child;
}
set
{
UIElement oldValue = Child;
#pragma warning disable 1634, 1691
#pragma warning disable 56526
_child = value;
#pragma warning restore 1634, 1691, 56526
HostContainerInternal.Children.Clear();
if (_child != null)
{
HostContainerInternal.Children.Add(_child);
_propertyMap.ApplyAll();
InitializeChildProperties();
}
OnChildChanged(oldValue);
}
}
protected override bool CanEnableIme
{
get
{
if (this.Child == null)
{
return false;
}
return base.CanEnableIme;
}
}
///
/// If focus on HwndSource, we need to return true here.
///
public override bool Focused
{
get
{
if( IsHandleCreated )
{
// observe that the EH.Child may be null and still it has an HwndSource.
IntPtr focusHandle = UnsafeNativeMethods.GetFocus();
return (focusHandle == this.Handle || (this.HwndSource != null && focusHandle == this.HwndSource.Handle));
}
return false;
}
}
protected override SWF.ImeMode ImeModeBase
{
get
{
return this.CanEnableIme ? base.ImeModeBase : ImeMode.Disable;
}
set
{
base.ImeModeBase = value;
// When the ImeMode is set to ImeMode.NoControl, Winforms stops raising the ImeModeChanged event
// on the control, we need to notify the property mapper explicitly.
if (value == SWF.ImeMode.NoControl)
{
this.OnPropertyChangedImeMode(this, EventArgs.Empty);
}
}
}
private void OnChildChanged(UIElement oldChild)
{
if (this.Child != null)
{
SyncHwndSrcImeStatus();
}
if (ChildChanged != null)
{
ChildChanged(this, new ChildChangedEventArgs(oldChild));
}
}
///
/// Raises the Leave event.
///
///
protected override void OnLeave(EventArgs e)
{
System.Windows.Input.FocusManager.SetFocusedElement(_decorator, null);
base.OnLeave(e);
}
///
/// Raises the GotFocus event.
///
///
protected override void OnGotFocus(EventArgs e)
{
base.OnGotFocus(e);
SyncHwndSrcImeStatus();
_decorator.Focus();
}
private void InitializeChildProperties()
{
FrameworkElement childFrameworkElement = Child as FrameworkElement;
if (childFrameworkElement != null)
{
childFrameworkElement.SizeChanged += new SizeChangedEventHandler(childFrameworkElement_SizeChanged);
childFrameworkElement.Height = double.NaN;
childFrameworkElement.Width = double.NaN;
childFrameworkElement.Margin = new Thickness(0d);
childFrameworkElement.VerticalAlignment = SW.VerticalAlignment.Stretch;
childFrameworkElement.HorizontalAlignment = SW.HorizontalAlignment.Stretch;
DesignerProperties.SetIsInDesignMode(childFrameworkElement, this.DesignMode);
Vector scale = HostUtils.GetScale(childFrameworkElement);
SD.Size maxElementSize = Convert.ToSystemDrawingSize(new Size(childFrameworkElement.MaxWidth, childFrameworkElement.MaxHeight), scale);
SD.Size priorMaxSize = HostUtils.ConvertZeroToUnbounded(MaximumSize);
int maxWidth = Math.Min(priorMaxSize.Width, maxElementSize.Width);
int maxHeight = Math.Min(priorMaxSize.Height, maxElementSize.Height);
MaximumSize = HostUtils.ConvertUnboundedToZero(new SD.Size(maxWidth, maxHeight));
}
}
///
/// Raises the VisibleChanged event.
///
///
protected override void OnVisibleChanged(EventArgs e)
{
base.OnVisibleChanged(e);
UpdateBackground();
}
void CallUpdateBackground(object sender, EventArgs e)
{
UpdateBackground();
}
void UpdateBackground()
{
OnPropertyChanged("BackgroundImage", BackgroundImage); //Update the background
}
void childFrameworkElement_SizeChanged(object sender, SizeChangedEventArgs e)
{
if (AutoSize)
{
PerformLayout();
}
}
internal AvalonAdapter HostContainerInternal
{
get
{
return _hostContainerInternal;
}
}
#endregion Containership
#region Rendering
///
/// Gets or sets a value indicating whether the hosted element has a transparent background.
///
[DefaultValue(false)]
public bool BackColorTransparent
{
get { return _backColorTransparent; }
set
{
_backColorTransparent = value;
UpdateBackground();
}
}
///
/// Hide GDI painting because the HwndTarget is going to just bitblt the root
/// visual on top of everything.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
protected override void OnPaint(SWF.PaintEventArgs e)
{
base.OnPaint(e);
}
///
/// Paint our parent's background into an offscreen HBITMAP.
/// We then draw this as our background in the hosted Avalon
/// control's Render() method to support WinForms->Avalon transparency.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
protected override void OnPaintBackground(SWF.PaintEventArgs pevent)
{
base.OnPaintBackground(pevent);
_decorator.InvalidateVisual();
}
internal void InvokePaintBackgroundAndPaint(SWF.Control control, SWF.PaintEventArgs args)
{
this.InvokePaintBackground(control, args);
this.InvokePaint(control, args);
}
///
/// Renders the control using the provided Graphics object.
///
///
protected override void OnPrint(PaintEventArgs e)
{
SWMI.RenderTargetBitmap renderBitmap = HostUtils.GetBitmapForFrameworkElement(_decorator);
if (renderBitmap != null)
{
using (SD.Bitmap bitmap = HostUtils.GetBitmapFromRenderTargetBitmap(this, renderBitmap, new Point(0, 0)))
{
e.Graphics.DrawImage(bitmap, SD.Point.Empty);
}
}
}
#endregion rendering
#region Keyboarding
///
/// Activates the hosted element.
///
protected override void Select(bool directed, bool forward)
{
if (directed == true)
{
SWI.TraversalRequest request = new SWI.TraversalRequest(forward
? SWI.FocusNavigationDirection.First
: SWI.FocusNavigationDirection.Last);
//Currently ignore TabInto's return value
(_hwndSource as IKeyboardInputSink).TabInto(request);
}
else
{
if (Child != null)
{
Child.Focus();
}
}
base.Select(directed, forward);
}
///
/// Processes a command key, ensuring that the hosted element has an
/// opportunity to handle the command before normal Windows Forms processing.
///
///
/// This will try see if the pressed key is an Avalon accelerator, if so it returns TRUE,
/// which tells WinForms to stop trying to process this key.
///
[SecurityPermission(SecurityAction.LinkDemand, Flags = SecurityPermissionFlag.UnmanagedCode)]
protected override bool ProcessCmdKey(ref System.Windows.Forms.Message msg, System.Windows.Forms.Keys keyData)
{
MSG msg2 = Convert.ToSystemWindowsInteropMSG(msg);
SWI.ModifierKeys modifiers = Convert.ToSystemWindowsInputModifierKeys(keyData);
if ((_hwndSource as IKeyboardInputSink).TranslateAccelerator(ref msg2, modifiers))
{
return true;
}
return base.ProcessCmdKey(ref msg, keyData);
}
///
/// Processes a mnemonic character, ensuring that the hosted element has an opportunity to handle the mnemonic before
/// normal Windows Forms processing.
///
///
/// This will try see if the pressed key is an Avalon accelerator, if so it tries
/// to process the key, which may move focus to the Avalon control.
///
[UIPermission(SecurityAction.LinkDemand, Window = UIPermissionWindow.AllWindows)]
protected override bool ProcessMnemonic(char charCode)
{
string upperKey = Char.ToUpper(charCode, CultureInfo.CurrentCulture).ToString();
if (SWI.AccessKeyManager.IsKeyRegistered(_hwndSource, upperKey))
{
// ProcessKey doesn't return enough information for us to handle
// mnemonic cycling reliably. I.e. we can't tell the difference
// between a key which wasn't processed (returns false) from the
// case where there is just one element with this key registered
// (also returns false).
SWI.AccessKeyManager.ProcessKey(_hwndSource, upperKey, false);
return true;
}
else
{
return base.ProcessMnemonic(charCode);
}
}
///
/// Ensures that all WM_CHAR key messages are forwarded to the hosted element.
///
///
/// Grab all WM_CHAR messages as text input to ensure they're sent to
/// Avalon. If Avalon doesn't handle the message, we will call
/// ProcessDialogChar later on.
///
protected override bool IsInputChar(char charCode)
{
return true;
}
///
/// Catch WM_CHAR messages which weren't handled by Avalon
/// (including mnemonics which were typed without the "Alt" key)
///
private void InputManager_PostProcessInput(object sender, SWI.ProcessInputEventArgs e)
{
IKeyboardInputSink ikis = _hwndSource as IKeyboardInputSink;
if (ikis == null || !ikis.HasFocusWithin())
{
return;
}
if (!e.StagingItem.Input.Handled && e.StagingItem.Input.RoutedEvent == SWI.TextCompositionManager.TextInputEvent)
{
SWI.TextCompositionEventArgs te = (SWI.TextCompositionEventArgs)e.StagingItem.Input;
string text = te.Text;
if (string.IsNullOrEmpty(text))
{
text = te.SystemText;
}
if (!string.IsNullOrEmpty(text))
{
e.StagingItem.Input.Handled = this.ProcessDialogChar(text[0]);
}
}
}
///
/// Enables a window to receive keyboard messages correctly when it is opened modelessly from Windows Forms.
///
/// The System.Windows.Window which will be opened modelessly.
[PermissionSet(SecurityAction.Demand, Name = "FullTrust")]
public static void EnableModelessKeyboardInterop(SW.Window window)
{
ApplicationInterop.EnableModelessKeyboardInterop(window);
}
#endregion Keyboarding
#region Window Handling & Misc
///
/// Raises the HandleCreated event.
///
protected override void OnHandleCreated(EventArgs e)
{
if (_hwndSource != null)
{
DisposeHWndSource();
}
SWF.CreateParams cp = this.CreateParams;
HwndSourceParameters HWSParam = new HwndSourceParameters(this.Text, cp.Width, cp.Height);
HWSParam.WindowClassStyle = cp.ClassStyle;
HWSParam.WindowStyle = cp.Style;
HWSParam.ExtendedWindowStyle = cp.ExStyle;
HWSParam.ParentWindow = Handle;
HWSParam.HwndSourceHook = HwndSourceHook;
_hwndSource = new HwndSource(HWSParam);
_hwndSource.RootVisual = _decorator;
//For keyboarding: Set the IKeyboardInputSite so that keyboard interop works...
(_hwndSource as IKeyboardInputSink).KeyboardInputSite = (HostContainerInternal as IKeyboardInputSite);
base.OnHandleCreated(e);
}
///
/// Hook for the HwndSource.WndProc.
///
private IntPtr HwndSourceHook(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
{
switch (msg)
{
case NativeMethods.WM_SETFOCUS:
if (wParam != Handle)
{
// wParam != Handle means focus was lost by a window different from this (EH).
// The message was sent directly to the HwndSource (by direct mouse input).
// We need to notify Winforms so it can set the active control and in turn
// notify Control.ActiveXImpl in case we are hosted in an unmanaged app.
// EH will set focus back to the WPF control from its OnGotFocus method.
this.Focus();
}
break;
case NativeMethods.WM_KILLFOCUS:
if (!this.Focused)
{
UnsafeNativeMethods.SendMessage(new HandleRef(this, this.Handle), msg, wParam, lParam);
}
break;
case NativeMethods.WM_INPUTLANGCHANGE:
OnHwndSrcWmInputLangChange(msg, wParam, lParam, ref handled);
break;
case NativeMethods.WM_IME_NOTIFY:
OnHwndSrcWmImeNotify(msg, wParam, lParam, ref handled);
break;
}
return IntPtr.Zero; // This value depends on the message being processed, see MSDN for the particular message.
}
private void SetHWndSourceWindowPos()
{
if (_hwndSource != null)
{
SafeNativeMethods.SetWindowPos(_hwndSource.Handle, NativeMethods.HWND_TOP, 0, 0, this.Width, this.Height, 0);
}
}
///
/// Synchronizes the HwndSource context status to the ElementHost's
///
internal bool SyncHwndSrcImeStatus()
{
Debug.WriteLineIf(HostUtils.ImeMode.Level >= TraceLevel.Info, "Inside SyncHwndSrcImeStatus(), this = " + this);
Debug.Indent();
bool handled = false;
if (this.HwndSource != null)
{
ImeMode ehImeMode = this.ImeMode != ImeMode.NoControl ? this.ImeMode : SWF.Control.PropagatingImeMode;
ImeMode hsImeMode = SWF.ImeContext.GetImeMode(this.HwndSource.Handle);
SetChildElementsIsImeEnabled(this.Child, ehImeMode != ImeMode.Disable);
if (ehImeMode != hsImeMode)
{
SWF.ImeContext.SetImeStatus(ehImeMode, this.HwndSource.Handle);
}
handled = true;
}
Debug.Unindent();
return handled;
}
///
/// Maps the ImeMode property. This is needed to synchronize the EH IME context with TFS used in WPF.
///
private static void SetChildElementsIsImeEnabled(SW.DependencyObject element, bool isEnabled)
{
if (element == null)
{
return;
}
if (element is SW.IInputElement)
{
Debug.WriteLineIf(HostUtils.ImeMode.Level >= TraceLevel.Verbose, "SetChildElementsIsImeEnabled, element = " + element);
SWI.InputMethod.SetIsInputMethodEnabled(element, isEnabled);
}
// Ideally, setting the top control context mode should suffice as with any other mapped property on EH
// but there is no InputMethodEnabledChanged event for clients to listen to to update child elements.
// we need to traverse the visual tree and do it ourselves.
int childCount = VisualTreeHelper.GetChildrenCount(element);
for (int childIndex = 0; childIndex < childCount; childIndex++)
{
SetChildElementsIsImeEnabled(VisualTreeHelper.GetChild(element, childIndex), isEnabled);
}
}
///
/// Handles HwndSrc WM_INPUTLANGCHANGED.
///
private void OnHwndSrcWmInputLangChange(int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
{
Debug.WriteLineIf(HostUtils.ImeMode.Level >= TraceLevel.Info, "Inside OnHwndSrcWmInputLangChange(), this = " + this);
Debug.Indent();
if (!_processingWmInputLangChanged)
{
_processingWmInputLangChanged = true;
try
{
// IME is being attached, notify the ElementHost to update its handle context, it in turn will pass
// the message to the HwndSource to update its context too.
OnHwndSourceMsgNotifyElementHost(msg, wParam, lParam);
handled = true;
}
finally
{
_processingWmInputLangChanged = false;
}
}
Debug.Unindent();
}
///
/// Handles HwndSrc WM_IME_NOTIFY.
///
private void OnHwndSrcWmImeNotify(int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
{
Debug.WriteLineIf(HostUtils.ImeMode.Level >= TraceLevel.Info, "Inside OnHwndSrcWmImeNotify(), this = " + this);
Debug.Indent();
handled = false;
if (SWF.ImeModeConversion.IsCurrentConversionTableSupported) //
{
if (wParam == (IntPtr)NativeMethods.IMN_SETCONVERSIONMODE || wParam == (IntPtr)NativeMethods.IMN_SETOPENSTATUS)
{
// IME context mode has been changed by interaction or a different IME has been attached,
// notify EH to update its ImeMode property if needed.
ImeMode hsImeMode = SWF.ImeContext.GetImeMode(this.HwndSource.Handle);
ImeMode ehImeMode = this.ImeMode;
if (hsImeMode != ehImeMode)
{
OnHwndSourceMsgNotifyElementHost(msg, wParam, lParam);
}
handled = true;
}
}
Debug.Unindent();
}
///
/// Passes a msg sent to the HwndSource into the ElementHost for preprocessing.
///
private void OnHwndSourceMsgNotifyElementHost(int msg, IntPtr wParam, IntPtr lParam)
{
Debug.WriteLineIf(HostUtils.ImeMode.Level >= TraceLevel.Verbose, "Inside OnHwndSourceMsgNotifyElementHost()");
Debug.Indent();
UnsafeNativeMethods.SendMessage(new HandleRef(this, this.Handle), msg, wParam, lParam);
Debug.Unindent();
}
///
/// Processes Windows messages.
///
///
[SecurityPermission(SecurityAction.InheritanceDemand, Flags = SecurityPermissionFlag.UnmanagedCode),
SecurityPermission(SecurityAction.LinkDemand, Flags = SecurityPermissionFlag.UnmanagedCode)]
protected override void WndProc(ref Message m)
{
switch (m.Msg)
{
case NativeMethods.WM_MOVE:
case NativeMethods.WM_SIZE:
case NativeMethods.WM_WINDOWPOSCHANGED:
case NativeMethods.WM_WINDOWPOSCHANGING:
base.WndProc(ref m);
SetHWndSourceWindowPos();
break;
case NativeMethods.WM_PARENTNOTIFY:
case NativeMethods.WM_REFLECT + NativeMethods.WM_PARENTNOTIFY:
base.WndProc(ref m);
if (HostUtils.LOWORD(m.WParam) == NativeMethods.WM_CREATE)
{
this.BeginInvoke(new MethodInvoker(SetHWndSourceWindowPos));
}
break;
case NativeMethods.WM_SETREDRAW:
if (!DesignMode && m.WParam == IntPtr.Zero)
{
base.WndProc(ref m);
}
break;
case NativeMethods.WM_KILLFOCUS:
// if focus is being set on the HwndSource then we should prevent LostFocus by
// handling this message.
if (this.HwndSource == null || this.HwndSource.Handle != m.WParam)
{
base.WndProc(ref m);
}
break;
default:
base.WndProc(ref m);
break;
}
}
///
/// Scales the parent container and the Windows Forms control.
///
///
///
protected override void ScaleCore(float dx, float dy)
{
TransformGroup layoutTransforms = new TransformGroup();
layoutTransforms.Children.Add(_decorator.LayoutTransform);
layoutTransforms.Children.Add(new ScaleTransform(dx, dy));
_decorator.LayoutTransform = layoutTransforms;
base.ScaleCore(dx, dy);
}
///
/// This initializes the default property mapping for the element host.
/// First: it creates a new PropertyMap to store all the mappings, this
/// is exposed to the user as the PropertyMap property.
/// Second: it forwards all property Changed events that we want to listen to
/// towards the OnPropertyChanged method.
/// Third: it registers several default translators, all of which are handled by
/// the ElementHostPropertyTranslator deligate.
///
private void StartPropertyMapping()
{
_propertyMap = new ElementHostPropertyMap(this);
//This forwards property change notification to OnPropertyChanged, since
//there is no generic way to handle listening to property value changes.
this.BackColorChanged += this.OnPropertyChangedBackColor;
this.BackgroundImageChanged += this.OnPropertyChangedBackgroundImage;
this.BackgroundImageLayoutChanged += this.OnPropertyChangedBackgroundImageLayout;
this.CursorChanged += this.OnPropertyChangedCursor;
this.EnabledChanged += this.OnPropertyChangedEnabled;
this.FontChanged += this.OnPropertyChangedFont;
this.ForeColorChanged += this.OnPropertyChangedForeColor;
this.RightToLeftChanged += this.OnPropertyChangedRightToLeft;
this.VisibleChanged += this.OnPropertyChangedVisible;
//We forward these property changes, but don't do anything with them.
this.AutoSizeChanged += this.OnPropertyChangedAutoSize;
this.BindingContextChanged += this.OnPropertyChangedBindingContext;
this.CausesValidationChanged += this.OnPropertyChangedCausesValidation;
this.ContextMenuChanged += this.OnPropertyChangedContextMenu;
this.ContextMenuStripChanged += this.OnPropertyChangedContextMenuStrip;
this.DockChanged += this.OnPropertyChangedDock;
this.LocationChanged += this.OnPropertyChangedLocation;
this.MarginChanged += this.OnPropertyChangedMargin;
this.PaddingChanged += this.OnPropertyChangedPadding;
this.ParentChanged += this.OnPropertyChangedParent;
this.RegionChanged += this.OnPropertyChangedRegion;
this.SizeChanged += this.OnPropertyChangedSize;
this.TabIndexChanged += this.OnPropertyChangedTabIndex;
this.TabStopChanged += this.OnPropertyChangedTabStop;
this.TextChanged += this.OnPropertyChangedText;
this.ImeModeChanged += this.OnPropertyChangedImeMode;
}
///
/// These delegates just map property changed events to OnPropertyChanged. These are
/// necessary in the WinForms model since there is no common path for property change
/// notification. (Avalon has an OnPropertyChanged method.)
///
private void OnPropertyChangedBackColor(object sender, System.EventArgs e)
{
OnPropertyChanged("BackColor", this.BackColor);
}
private void OnPropertyChangedBackgroundImage(object sender, System.EventArgs e)
{
OnPropertyChanged("BackgroundImage", this.BackgroundImage);
}
private void OnPropertyChangedBackgroundImageLayout(object sender, System.EventArgs e)
{
OnPropertyChanged("BackgroundImageLayout", this.BackgroundImageLayout);
}
private void OnPropertyChangedCursor(object sender, System.EventArgs e)
{
OnPropertyChanged("Cursor", this.Cursor);
}
private void OnPropertyChangedEnabled(object sender, System.EventArgs e)
{
OnPropertyChanged("Enabled", this.Enabled);
}
private void OnPropertyChangedFont(object sender, System.EventArgs e)
{
OnPropertyChanged("Font", this.Font);
}
private void OnPropertyChangedForeColor(object sender, System.EventArgs e)
{
OnPropertyChanged("ForeColor", this.ForeColor);
}
private void OnPropertyChangedRightToLeft(object sender, System.EventArgs e)
{
OnPropertyChanged("RightToLeft", this.RightToLeft);
}
private void OnPropertyChangedTabStop(object sender, System.EventArgs e)
{
OnPropertyChanged("TabStop", this.TabStop);
}
private void OnPropertyChangedVisible(object sender, System.EventArgs e)
{
OnPropertyChanged("Visible", this.Visible);
}
// These properties don't have default mappings, but are added in case anyone wants to add them
private void OnPropertyChangedAutoSize(object sender, System.EventArgs e)
{
OnPropertyChanged("AutoSize", this.AutoSize);
}
private void OnPropertyChangedPadding(object sender, System.EventArgs e)
{
OnPropertyChanged("Padding", this.Padding);
}
private void OnPropertyChangedBindingContext(object sender, System.EventArgs e)
{
OnPropertyChanged("BindingContext", this.BindingContext);
}
private void OnPropertyChangedCausesValidation(object sender, System.EventArgs e)
{
OnPropertyChanged("CausesValidation", this.CausesValidation);
}
private void OnPropertyChangedContextMenu(object sender, System.EventArgs e)
{
OnPropertyChanged("ContextMenu", this.ContextMenu);
}
private void OnPropertyChangedContextMenuStrip(object sender, System.EventArgs e)
{
OnPropertyChanged("ContextMenuStrip", this.ContextMenuStrip);
}
private void OnPropertyChangedDock(object sender, System.EventArgs e)
{
OnPropertyChanged("Dock", this.Dock);
}
private void OnPropertyChangedLocation(object sender, System.EventArgs e)
{
OnPropertyChanged("Location", this.Location);
}
private void OnPropertyChangedMargin(object sender, System.EventArgs e)
{
OnPropertyChanged("Margin", this.Margin);
}
private void OnPropertyChangedParent(object sender, System.EventArgs e)
{
OnPropertyChanged("Parent", this.Parent);
}
private void OnPropertyChangedRegion(object sender, System.EventArgs e)
{
OnPropertyChanged("Region", this.Region);
}
private void OnPropertyChangedSize(object sender, System.EventArgs e)
{
OnPropertyChanged("Size", this.Size);
}
private void OnPropertyChangedTabIndex(object sender, System.EventArgs e)
{
OnPropertyChanged("TabIndex", this.TabIndex);
}
private void OnPropertyChangedText(object sender, System.EventArgs e)
{
OnPropertyChanged("Text", this.Text);
}
private void OnPropertyChangedImeMode(object sender, System.EventArgs e)
{
OnPropertyChanged("ImeMode", this.ImeMode);
}
///
/// Notifies the property map that a property has changed.
///
/// the name of the property which has changed and requires translation
/// the new value of the property
///
/// Putting an InheritanceDemand as a defense-in-depth measure,
/// as this provides a hook to the property system that we don't
/// want exposed under PartialTrust.
///
[UIPermissionAttribute(SecurityAction.InheritanceDemand, Window = UIPermissionWindow.AllWindows)]
public virtual void OnPropertyChanged(string propertyName, object value)
{
if (PropertyMap != null)
{
PropertyMap.OnPropertyChanged(this, propertyName, value);
}
}
///
/// Gets the property map, which determines how setting properties on the
/// ElementHost control affects the hosted Windows Presentation Foundation element.
///
[Browsable(false)]
public PropertyMap PropertyMap
{
get { return _propertyMap; }
}
private ElementHostPropertyMap _propertyMap;
#endregion Property Mapping
#region Hidden Events
///
/// Occurs when the value of the BindingContext property changes.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event EventHandler BindingContextChanged
{
add { base.BindingContextChanged += value; }
remove { base.BindingContextChanged -= value; }
}
///
/// Occurs when the control is clicked.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event EventHandler Click
{
add { base.Click += value; }
remove { base.Click -= value; }
}
///
/// Occurs when the value of the ClientSize property changes.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event EventHandler ClientSizeChanged
{
add { base.ClientSizeChanged += value; }
remove { base.ClientSizeChanged -= value; }
}
///
/// Occurs when a new control is added to the Control.ControlCollection.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event ControlEventHandler ControlAdded
{
add { base.ControlAdded += value; }
remove { base.ControlAdded -= value; }
}
///
/// Occurs when a control is removed from the Control.ControlCollection.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event ControlEventHandler ControlRemoved
{
add { base.ControlRemoved += value; }
remove { base.ControlRemoved -= value; }
}
///
/// Occurs when the value of the Cursor property changes.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event EventHandler CursorChanged
{
add { base.CursorChanged += value; }
remove { base.CursorChanged -= value; }
}
///
/// Occurs when the control is double-clicked.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event EventHandler DoubleClick
{
add { base.DoubleClick += value; }
remove { base.DoubleClick -= value; }
}
///
/// Occurs when a drag-and-drop operation is completed.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event DragEventHandler DragDrop
{
add { base.DragDrop += value; }
remove { base.DragDrop -= value; }
}
///
/// Occurs when an object is dragged into the control's bounds.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event DragEventHandler DragEnter
{
add { base.DragEnter += value; }
remove { base.DragEnter -= value; }
}
///
/// Occurs when an object is dragged out of the control's bounds.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event EventHandler DragLeave
{
add { base.DragLeave += value; }
remove { base.DragLeave -= value; }
}
///
/// Occurs when an object is dragged over the control's bounds.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event DragEventHandler DragOver
{
add { base.DragOver += value; }
remove { base.DragOver -= value; }
}
///
/// Occurs when the control is entered.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event EventHandler Enter
{
add { base.Enter += value; }
remove { base.Enter -= value; }
}
///
/// Occurs when the Font property value changes.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event EventHandler FontChanged
{
add { base.FontChanged += value; }
remove { base.FontChanged -= value; }
}
///
/// Occurs when the ForeColor property value changes.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event EventHandler ForeColorChanged
{
add { base.ForeColorChanged += value; }
remove { base.ForeColorChanged -= value; }
}
///
/// Occurs during a drag operation.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event GiveFeedbackEventHandler GiveFeedback
{
add { base.GiveFeedback += value; }
remove { base.GiveFeedback -= value; }
}
///
/// Occurs when the control receives focus.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event EventHandler GotFocus
{
add { base.GotFocus += value; }
remove { base.GotFocus -= value; }
}
///
/// Occurs when a control's display requires redrawing.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event InvalidateEventHandler Invalidated
{
add { base.Invalidated += value; }
remove { base.Invalidated -= value; }
}
///
/// Occurs when a key is pressed while the control has focus.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event KeyEventHandler KeyDown
{
add { base.KeyDown += value; }
remove { base.KeyDown -= value; }
}
///
/// Occurs when a key is pressed while the control has focus.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event KeyPressEventHandler KeyPress
{
add { base.KeyPress += value; }
remove { base.KeyPress -= value; }
}
///
/// Occurs when a key is released while the control has focus.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event KeyEventHandler KeyUp
{
add { base.KeyUp += value; }
remove { base.KeyUp -= value; }
}
///
/// Occurs when a control should reposition its child controls.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event LayoutEventHandler Layout
{
add { base.Layout += value; }
remove { base.Layout -= value; }
}
///
/// Occurs when the input focus leaves the control.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event EventHandler Leave
{
add { base.Leave += value; }
remove { base.Leave -= value; }
}
///
/// Occurs when the control loses focus.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event EventHandler LostFocus
{
add { base.LostFocus += value; }
remove { base.LostFocus -= value; }
}
///
/// Occurs when the control loses mouse capture.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event EventHandler MouseCaptureChanged
{
add { base.MouseCaptureChanged += value; }
remove { base.MouseCaptureChanged -= value; }
}
///
/// Occurs when the control is clicked by the mouse.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event MouseEventHandler MouseClick
{
add { base.MouseClick += value; }
remove { base.MouseClick -= value; }
}
///
/// Occurs when the control is double clicked by the mouse.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event MouseEventHandler MouseDoubleClick
{
add { base.MouseDoubleClick += value; }
remove { base.MouseDoubleClick -= value; }
}
///
/// Occurs when the mouse pointer is over the control and a mouse button is pressed.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event MouseEventHandler MouseDown
{
add { base.MouseDown += value; }
remove { base.MouseDown -= value; }
}
///
/// Occurs when the mouse pointer enters the control.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event EventHandler MouseEnter
{
add { base.MouseEnter += value; }
remove { base.MouseEnter -= value; }
}
///
/// Occurs when the mouse pointer rests on the control.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event EventHandler MouseHover
{
add { base.MouseHover += value; }
remove { base.MouseHover -= value; }
}
///
/// Occurs when the mouse pointer leaves the control. (
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event EventHandler MouseLeave
{
add { base.MouseLeave += value; }
remove { base.MouseLeave -= value; }
}
///
/// Occurs when the mouse pointer is moved over the control.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event MouseEventHandler MouseMove
{
add { base.MouseMove += value; }
remove { base.MouseMove -= value; }
}
///
/// Occurs when the mouse pointer is over the control and a mouse button is released.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event MouseEventHandler MouseUp
{
add { base.MouseUp += value; }
remove { base.MouseUp -= value; }
}
///
/// Occurs when the mouse wheel moves while the control has focus.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event MouseEventHandler MouseWheel
{
add { base.MouseWheel += value; }
remove { base.MouseWheel -= value; }
}
///
/// Occurs when the control's padding changes.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event EventHandler PaddingChanged
{
add { base.PaddingChanged += value; }
remove { base.PaddingChanged -= value; }
}
///
/// Occurs when the control is redrawn.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event PaintEventHandler Paint
{
add { base.Paint += value; }
remove { base.Paint -= value; }
}
///
/// Occurs before the KeyDown event when a key is pressed while focus is on this control.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event PreviewKeyDownEventHandler PreviewKeyDown
{
add { base.PreviewKeyDown += value; }
remove { base.PreviewKeyDown -= value; }
}
///
/// Occurs during a drag-and-drop operation and enables the drag source to determine
/// whether the drag-and-drop operation should be canceled.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event QueryContinueDragEventHandler QueryContinueDrag
{
add { base.QueryContinueDrag += value; }
remove { base.QueryContinueDrag -= value; }
}
///
/// Occurs when the control is resized.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event EventHandler Resize
{
add { base.Resize += value; }
remove { base.Resize -= value; }
}
///
/// Occurs when the RightToLeft property value changes.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event EventHandler RightToLeftChanged
{
add { base.RightToLeftChanged += value; }
remove { base.RightToLeftChanged -= value; }
}
///
/// Occurs when the Size property value changes.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event EventHandler SizeChanged
{
add { base.SizeChanged += value; }
remove { base.SizeChanged -= value; }
}
///
/// Occurs when the Text property value changes.
///
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
public new event EventHandler TextChanged
{
add { base.TextChanged += value; }
remove { base.TextChanged -= value; }
}
#endregion
#region DEBUG
#if DEBUG
private static readonly TraceSwitch _traceLayout = new TraceSwitch("ElementHostLayout", "Tracks ElementHost layout information.");
#else
private static readonly TraceSwitch _traceLayout = null;
#endif
#endregion DEBUG
}
#region AvalonAdapter
internal class AvalonAdapter : SWC.DockPanel, IDisposable, IKeyboardInputSite
{
private ElementHost _hostControl;
[SuppressMessage("Microsoft.Performance", "CA1810:InitializeReferenceTypeStaticFieldsInline")]
static AvalonAdapter()
{
//These properties define how tabbing occurs in the DockPanel. To be most like
//WinForms these are set to use Continue mode as the default.
//
SWI.KeyboardNavigation.DirectionalNavigationProperty.OverrideMetadata(
typeof(AvalonAdapter),
new FrameworkPropertyMetadata(SWI.KeyboardNavigationMode.Continue));
SWI.KeyboardNavigation.TabNavigationProperty.OverrideMetadata(
typeof(AvalonAdapter),
new FrameworkPropertyMetadata(SWI.KeyboardNavigationMode.Continue));
}
///
/// Creates the Avalon control we use to host
/// other WinForms control in Avalon.
///
public AvalonAdapter(ElementHost hostControl)
{
_hostControl = hostControl;
}
///
/// unsink our events
///
public void Dispose()
{
_hostControl = null;
}
// used to force invalidation of the avalon control's client area.
public static readonly DependencyProperty ForceInvalidateProperty =
DependencyProperty.Register(
"ForceInvalidate",
typeof(bool),
typeof(AvalonAdapter),
new FrameworkPropertyMetadata(
false,
FrameworkPropertyMetadataOptions.AffectsRender));
private static object OnGetForceInvalidate(DependencyObject d)
{
return ((AvalonAdapter)d).ForceInvalidate;
}
///
/// This property is toggled by ElementHost to force the hosted
/// Avalon control to redraw itself
///
public bool ForceInvalidate
{
get { return (bool)GetValue(ForceInvalidateProperty); }
set { SetValue(ForceInvalidateProperty, value); }
}
///
/// This is a transparency optimization. It looks up the SWF visual heirarchy to
/// find the first opaque control. It then uses this color as the background for
/// OnRender. This doesn't work all the time, but is much faster than the bitmap
/// conversion.
///
/// The current control
/// The first opaque color found, or Color.Empty if none is found
private static SD.Color FindSolidColorParent(Control whichControl)
{
Control control = whichControl;
while (control.Parent != null)
{
control = control.Parent;
if (control.BackColor != SD.Color.Empty && control.BackColor.A == 255)
{
return control.BackColor;
}
}
return SD.Color.Empty;
}
#region IKeyboardInputSite
public void Unregister()
{
}
public bool OnNoMoreTabStops(SWI.TraversalRequest request)
{
//Tabbing out of hosted elements
//Select the next control
bool forward = true;
Debug.Assert(request != null, "request was null!");
if (request != null)
{
switch (request.FocusNavigationDirection)
{
case System.Windows.Input.FocusNavigationDirection.Down:
case System.Windows.Input.FocusNavigationDirection.Right:
case System.Windows.Input.FocusNavigationDirection.Next:
forward = true;
break;
case System.Windows.Input.FocusNavigationDirection.Up:
case System.Windows.Input.FocusNavigationDirection.Left:
case System.Windows.Input.FocusNavigationDirection.Previous:
forward = false;
break;
case System.Windows.Input.FocusNavigationDirection.First:
case System.Windows.Input.FocusNavigationDirection.Last:
break;
default:
Debug.Assert(false, "Unknown FocusNavigationDirection");
break;
}
}
if (_hostControl != null)
{
// Get _hostControl's top-most parent.
Control topMostParent = _hostControl;
while (topMostParent.Parent != null)
{
topMostParent = topMostParent.Parent;
}
return topMostParent.SelectNextControl(_hostControl, forward, true, true, true);
}
return false;
}
public IKeyboardInputSink Sink
{
get
{
return (_hostControl.HwndSource as IKeyboardInputSink);
}
}
#endregion IKeyboardInputSite
protected override System.Windows.Automation.Peers.AutomationPeer OnCreateAutomationPeer()
{
return new ElementHostAutomationPeer(this);
}
}
#endregion AvalonAdapter
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
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- RegisteredScript.cs
- IdnElement.cs
- DefaultHttpHandler.cs
- EntityCommandCompilationException.cs
- DataGridViewRowConverter.cs
- TrimSurroundingWhitespaceAttribute.cs
- UnwrappedTypesXmlSerializerManager.cs
- RequiredArgumentAttribute.cs
- AutomationAttributeInfo.cs
- DeflateStreamAsyncResult.cs
- Invariant.cs
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- DiagnosticSection.cs
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- PrimitiveXmlSerializers.cs
- PathGradientBrush.cs
- ConversionValidationRule.cs
- Transactions.cs
- BigInt.cs
- BitmapEffectInputData.cs
- ToolStripPanelCell.cs
- DataGridCheckBoxColumn.cs
- BamlLocalizer.cs
- AssemblyFilter.cs
- FocusChangedEventArgs.cs
- NullReferenceException.cs
- ListViewUpdateEventArgs.cs
- KeyEvent.cs
- OLEDB_Enum.cs
- XmlSerializerNamespaces.cs
- ColumnHeader.cs
- DataServiceExpressionVisitor.cs
- ApplicationBuildProvider.cs
- SetState.cs
- DataBindingCollection.cs
- XamlTypeMapper.cs
- ShadowGlyph.cs
- ParameterBuilder.cs
- HttpCachePolicy.cs
- BitmapEffectGroup.cs
- DesignerActionGlyph.cs
- PartialCachingControl.cs
- Base64Decoder.cs
- PkcsMisc.cs
- ListViewSortEventArgs.cs
- EventLogPermissionEntry.cs
- OutOfMemoryException.cs
- InputLanguage.cs
- Package.cs
- ScriptMethodAttribute.cs
- Thumb.cs
- OnOperation.cs
- Gdiplus.cs
- AsyncStreamReader.cs
- RequestNavigateEventArgs.cs
- SqlDataSourceStatusEventArgs.cs
- InfoCardRSAOAEPKeyExchangeDeformatter.cs
- Convert.cs
- GeneralTransform3DCollection.cs
- PersistChildrenAttribute.cs
- TextureBrush.cs
- SystemWebSectionGroup.cs
- QueryOpcode.cs
- DataGridViewButtonColumn.cs
- DocumentCollection.cs
- QilReference.cs
- HostSecurityManager.cs
- SqlTypeSystemProvider.cs
- MutexSecurity.cs
- _SafeNetHandles.cs
- FontClient.cs
- ManagementPath.cs
- Marshal.cs
- ZipIOCentralDirectoryDigitalSignature.cs
- RegexReplacement.cs
- InvalidComObjectException.cs
- MethodCallConverter.cs
- SecurityHelper.cs
- IntranetCredentialPolicy.cs
- TitleStyle.cs
- IndependentAnimationStorage.cs
- TextBox.cs
- TypedColumnHandler.cs
- dataprotectionpermission.cs
- Activator.cs
- _CommandStream.cs
- MergeFailedEvent.cs
- AuthorizationRuleCollection.cs
- WasHttpHandlersInstallComponent.cs
- NegotiationTokenAuthenticator.cs
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- ProfileSection.cs