/// <summary>
/// Returns a <c>GraphicsPath</c> representation of what will be drawn.
/// </summary>
/// <returns></returns>
public override GraphicsPath MakePath()
{
GraphicsPath graphicsPath = new GraphicsPath(FillMode.Winding);
int pointsCount = PointsCount;
PointF[] array = new PointF[pointsCount];
for (int i = 0; i < pointsCount; i = checked (i + 1))
{
array[i] = GetPoint(i);
}
bool flag = Style == GoPolygonStyle.Bezier;
if (flag && pointsCount % 3 != 1)
{
GoObject.Trace("Polygon has wrong number of points: " + pointsCount.ToString(NumberFormatInfo.InvariantInfo) + "; should have 3n+1 points");
flag = false;
}
if (flag)
{
graphicsPath.AddBeziers(array);
}
else
{
graphicsPath.AddLines(array);
}
graphicsPath.CloseAllFigures();
return(graphicsPath);
}
/// <summary>
/// Restore the state of some documents to after the current <see cref="T:Northwoods.Go.IGoUndoableEdit" />.
/// </summary>
/// <remarks>
/// This calls <see cref="M:Northwoods.Go.IGoUndoableEdit.Redo" /> on the current <see cref="P:Northwoods.Go.GoUndoManager.EditToRedo" />.
/// This will raise a <see cref="E:Northwoods.Go.GoDocument.Changed" /> event with a hint of
/// <see cref="F:Northwoods.Go.GoDocument.StartingRedo" /> before actually performing the redo, and will raise a
/// Changed event with a hint of <see cref="F:Northwoods.Go.GoDocument.FinishedRedo" /> afterwards.
/// The <see cref="T:Northwoods.Go.GoChangedEventArgs" />.<see cref="P:Northwoods.Go.GoChangedEventArgs.Object" />
/// is the <see cref="T:Northwoods.Go.GoUndoManagerCompoundEdit" /> that was the value of
/// <see cref="P:Northwoods.Go.GoUndoManager.EditToRedo" /> before calling Redo.
/// </remarks>
/// <seealso cref="M:Northwoods.Go.GoUndoManager.CanRedo" />
public virtual void Redo()
{
checked
{
if (CanRedo())
{
IGoUndoableEdit editToRedo = EditToRedo;
try
{
foreach (GoDocument document in Documents)
{
document.RaiseChanged(109, 0, editToRedo, 0, null, GoObject.NullRect, 0, null, GoObject.NullRect);
}
myIsRedoing = true;
myCurrentEditIndex++;
editToRedo.Redo();
}
catch (Exception ex)
{
GoObject.Trace("Redo: " + ex.ToString());
throw;
}
finally
{
myIsRedoing = false;
foreach (GoDocument document2 in Documents)
{
document2.RaiseChanged(110, 0, editToRedo, 0, null, GoObject.NullRect, 0, null, GoObject.NullRect);
}
}
}
}
}
/// <summary>
/// Create an <see cref="T:Northwoods.Go.IGoUndoableEdit" /> for a <see cref="T:Northwoods.Go.GoDocument" /> Changed event.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
/// <remarks>
/// This calls <see cref="M:Northwoods.Go.GoUndoManager.SkipEvent(Northwoods.Go.GoChangedEventArgs)" /> if for some reason we should ignore
/// the <paramref name="e" />.
/// This then creates a <see cref="T:Northwoods.Go.GoChangedEventArgs" /> and adds it to the
/// <see cref="P:Northwoods.Go.GoUndoManager.CurrentEdit" />, a <see cref="T:Northwoods.Go.GoUndoManagerCompoundEdit" /> which it allocates
/// if needed.
/// This method always ignores all Changed events while we are performing an
/// <see cref="M:Northwoods.Go.GoUndoManager.Undo" /> or <see cref="M:Northwoods.Go.GoUndoManager.Redo" />.
/// </remarks>
public virtual void DocumentChanged(object sender, GoChangedEventArgs e)
{
if (!IsUndoing && !IsRedoing && !SkipEvent(e))
{
GoUndoManagerCompoundEdit goUndoManagerCompoundEdit = CurrentEdit;
if (goUndoManagerCompoundEdit == null || goUndoManagerCompoundEdit.IsComplete)
{
goUndoManagerCompoundEdit = (CurrentEdit = new GoUndoManagerCompoundEdit());
}
GoChangedEventArgs goChangedEventArgs = new GoChangedEventArgs(e);
goUndoManagerCompoundEdit.AddEdit(goChangedEventArgs);
if (ChecksTransactionLevel && TransactionLevel <= 0)
{
GoObject.Trace("Change not within a transaction: " + goChangedEventArgs.ToString());
}
}
}
/// <summary>
/// This method is responsible for getting an Image.
/// </summary>
/// <returns>
/// An <c>Image</c>.
/// </returns>
/// <remarks>
/// <para>
/// The normal behavior is to try to use the <see cref="P:Northwoods.Go.GoImage.Index" />
/// value, if non-negative, to find an Image in the <see cref="P:Northwoods.Go.GoImage.ImageList" />.
/// If there is no ImageList, we try using the <see cref="P:Northwoods.Go.GoImage.DefaultImageList" />.
/// </para>
/// <para>
/// If the index value is negative, we use the <see cref="P:Northwoods.Go.GoImage.Name" />
/// to get an Image object from the <see cref="P:Northwoods.Go.GoImage.ResourceManager" />.
/// If there is no ResourceManager, we try using the
/// <see cref="P:Northwoods.Go.GoImage.DefaultResourceManager" />, and if that fails, we
/// try treating the name as a filename.
/// </para>
/// <para>
/// The resulting Image is normally cached by this object as the
/// <see cref="P:Northwoods.Go.GoImage.Image" /> property. If it loads the image from a file,
/// the file may remain locked until the image is garbage collected.
/// </para>
/// <para>
/// If an exception occurs trying to load an image, the message
/// is sent to trace listeners. Also, if <see cref="P:Northwoods.Go.GoImage.ThrowsExceptions" />
/// is true, the catch handler will rethrow the exception.
/// If the <see cref="P:Northwoods.Go.GoImage.Index" /> is out-of-bounds for the <see cref="P:Northwoods.Go.GoImage.ImageList" />,
/// or if the <see cref="P:Northwoods.Go.GoImage.Name" /> is not found in the <see cref="P:Northwoods.Go.GoImage.ResourceManager" />,
/// this will fail silently--no exception is thrown.
/// </para>
/// </remarks>
/// <seealso cref="M:Northwoods.Go.GoImage.UnloadImage" />
public virtual Image LoadImage()
{
int index = Index;
if (index >= 0)
{
Image image = null;
ImageList imageList = ImageList;
if (imageList != null)
{
image = FindCachedImage(imageList, index, null, CultureInfo.InvariantCulture);
if (image != null)
{
return(image);
}
}
ImageList defaultImageList = DefaultImageList;
if (defaultImageList != null && defaultImageList != imageList)
{
image = FindCachedImage(defaultImageList, index, null, CultureInfo.InvariantCulture);
if (image != null)
{
return(image);
}
}
if (imageList != null && index < imageList.Images.Count)
{
image = imageList.Images[index];
}
if (image != null)
{
SaveCachedImage(imageList, index, null, CultureInfo.InvariantCulture, image);
return(image);
}
if (defaultImageList != null && defaultImageList != imageList && index < defaultImageList.Images.Count)
{
image = defaultImageList.Images[index];
}
if (image != null)
{
SaveCachedImage(defaultImageList, index, null, CultureInfo.InvariantCulture, image);
return(image);
}
if (image != null)
{
return(image);
}
}
string name = Name;
if (name != null && name != "")
{
Image image2 = null;
ResourceManager resourceManager = ResourceManager;
if (resourceManager != null)
{
image2 = FindCachedImage(resourceManager, 0, name, CultureInfo.CurrentCulture);
if (image2 != null)
{
return(image2);
}
}
ResourceManager defaultResourceManager = DefaultResourceManager;
if (defaultResourceManager != null && defaultResourceManager != resourceManager)
{
image2 = FindCachedImage(defaultResourceManager, 0, name, CultureInfo.CurrentCulture);
if (image2 != null)
{
return(image2);
}
}
image2 = FindCachedImage(null, 0, name, CultureInfo.InvariantCulture);
if (image2 != null)
{
return(image2);
}
if (resourceManager != null)
{
try
{
object @object = resourceManager.GetObject(name, CultureInfo.CurrentCulture);
image2 = ConvertObjectToImage(@object);
}
catch (MissingManifestResourceException)
{
}
}
if (image2 != null)
{
SaveCachedImage(resourceManager, 0, name, CultureInfo.CurrentCulture, image2);
return(image2);
}
if (defaultResourceManager != null && defaultResourceManager != resourceManager)
{
try
{
object object2 = defaultResourceManager.GetObject(name, CultureInfo.CurrentCulture);
image2 = ConvertObjectToImage(object2);
}
catch (MissingManifestResourceException)
{
}
}
if (image2 != null)
{
SaveCachedImage(defaultResourceManager, 0, name, CultureInfo.CurrentCulture, image2);
return(image2);
}
try
{
if (NameIsUri)
{
WebClient webClient = new WebClient();
Stream stream = webClient.OpenRead(name);
image2 = Image.FromStream(stream);
stream.Close();
webClient.Dispose();
}
else
{
image2 = Image.FromFile(name);
}
base.InternalFlags &= -4194305;
}
catch (Exception ex3)
{
if ((base.InternalFlags & 0x400000) == 0)
{
base.InternalFlags |= 4194304;
GoObject.Trace("GoImage.LoadImage: " + ex3.ToString());
}
if (ThrowsExceptions)
{
throw;
}
}
if (image2 != null)
{
SaveCachedImage(null, 0, name, CultureInfo.InvariantCulture, image2);
return(image2);
}
}
return(null);
}
/// <summary>
/// Draw this Image within the bounds of this object.
/// </summary>
/// <param name="g"></param>
/// <param name="view"></param>
/// <remarks>
/// If the value of <see cref="P:Northwoods.Go.GoImage.Image" /> is null and the value
/// of <see cref="P:Northwoods.Go.GoImage.Index" /> is non-negative, we try to draw an <c>Image</c>
/// from the view's <see cref="P:Northwoods.Go.GoView.ImageList" />.
/// </remarks>
public override void Paint(Graphics g, GoView view)
{
RectangleF bounds = Bounds;
Image image = Image;
int index = Index;
if (image == null && index >= 0)
{
ImageList imageList = view.ImageList;
if (imageList != null && index < imageList.Images.Count)
{
image = imageList.Images[index];
}
}
if (image != null)
{
try
{
if (Shadowed)
{
SizeF shadowOffset = GetShadowOffset(view);
ColorMatrix colorMatrix = new ColorMatrix();
colorMatrix.Matrix00 = 0f;
colorMatrix.Matrix11 = 0f;
colorMatrix.Matrix22 = 0f;
SolidBrush solidBrush = GetShadowBrush(view) as SolidBrush;
if (solidBrush != null)
{
Color color = solidBrush.Color;
colorMatrix.Matrix30 = (float)(int)color.R / 255f;
colorMatrix.Matrix31 = (float)(int)color.G / 255f;
colorMatrix.Matrix32 = (float)(int)color.B / 255f;
colorMatrix.Matrix33 = (float)(int)color.A / 255f;
}
else
{
colorMatrix.Matrix30 = 0.5f;
colorMatrix.Matrix31 = 0.5f;
colorMatrix.Matrix32 = 0.5f;
colorMatrix.Matrix33 = 0.5f;
}
ImageAttributes imageAttributes = new ImageAttributes();
imageAttributes.SetColorMatrix(colorMatrix);
g.DrawImage(image, checked (new Rectangle((int)(bounds.X + shadowOffset.Width), (int)(bounds.Y + shadowOffset.Height), (int)bounds.Width, (int)bounds.Height)), 0, 0, image.Size.Width, image.Size.Height, GraphicsUnit.Pixel, imageAttributes);
}
g.DrawImage(image, bounds);
base.InternalFlags &= -4194305;
}
catch (Exception ex)
{
if ((base.InternalFlags & 0x400000) == 0)
{
base.InternalFlags |= 4194304;
GoObject.Trace("GoImage.Paint: " + ex.ToString());
}
if (ThrowsExceptions)
{
throw;
}
}
}
}
/// <summary>
/// Start a drag-and-drop operation.
/// </summary>
/// <remarks>
/// <para>
/// This first remembers the <see cref="P:Northwoods.Go.GoToolDragging.MoveOffset" /> between the <see cref="P:Northwoods.Go.GoTool.CurrentObject" />'s
/// position and the mouse point (the first input event point).
/// It removes any selection handles, so those do not need to be dragged along.
/// It also starts a transaction.
/// If the view's <see cref="P:Northwoods.Go.GoView.AllowDragOut" /> property is true, we call
/// <c>Control.DoDragDrop</c> to start the standard modal drag-and-drop process.
/// </para>
/// <para>
/// This depends on the cooperation of <see cref="M:Northwoods.Go.GoView.OnDragOver(System.Windows.Forms.DragEventArgs)" />, <see cref="M:Northwoods.Go.GoView.OnDragDrop(System.Windows.Forms.DragEventArgs)" />,
/// and <see cref="M:Northwoods.Go.GoView.OnQueryContinueDrag(System.Windows.Forms.QueryContinueDragEventArgs)" /> to call <see cref="M:Northwoods.Go.GoToolDragging.DoMouseMove" />,
/// <see cref="M:Northwoods.Go.GoToolDragging.DoMouseUp" />, and <see cref="M:Northwoods.Go.GoToolDragging.DoCancelMouse" /> appropriately when the
/// drop target is the same view as the drag source.
/// If the view's <see cref="P:Northwoods.Go.GoView.AllowDragOut" /> property is false, the
/// normal calls to <see cref="M:Northwoods.Go.GoToolDragging.DoMouseMove" />, <see cref="M:Northwoods.Go.GoToolDragging.DoMouseUp" />, and
/// <see cref="M:Northwoods.Go.GoToolDragging.DoCancelMouse" /> occur.
/// </para>
/// <para>
/// If <see cref="P:Northwoods.Go.GoToolDragging.SelectsWhenStarts" /> is false, this method does not
/// modify the current selection and does not set
/// <see cref="P:Northwoods.Go.GoTool.CurrentObject" /> or <see cref="P:Northwoods.Go.GoToolDragging.MoveOffset" />.
/// </para>
/// </remarks>
public override void Start()
{
if (SelectsWhenStarts)
{
base.CurrentObject = base.View.PickObject(doc: true, view: false, base.FirstInput.DocPoint, selectableOnly: true);
if (base.CurrentObject == null)
{
return;
}
MoveOffset = GoTool.SubtractPoints(base.FirstInput.DocPoint, base.CurrentObject.Position);
}
StartTransaction();
if (SelectsWhenStarts && !base.Selection.Contains(base.CurrentObject))
{
if (base.FirstInput.Shift || base.FirstInput.Control)
{
base.Selection.Add(base.CurrentObject);
}
else
{
base.Selection.Select(base.CurrentObject);
}
}
if (!base.View.DragRoutesRealtime && base.View.DragsRealtime)
{
base.View.Document.SuspendsRouting = true;
}
if (HidesSelectionHandles)
{
mySelectionHidden = true;
base.Selection.RemoveAllSelectionHandles();
}
if (base.View.AllowDragOut)
{
myModalDropped = false;
try
{
if (base.Selection.Primary != null)
{
SizeF hotSpot = GoTool.SubtractPoints(base.LastInput.DocPoint, base.Selection.Primary.Position);
base.Selection.HotSpot = hotSpot;
}
DoDragDrop(base.Selection, DragDropEffects.All);
}
catch (VerificationException ex)
{
GoObject.Trace("GoToolDragging Start: " + ex.ToString());
}
catch (SecurityException ex2)
{
GoObject.Trace("GoToolDragging Start: " + ex2.ToString());
}
finally
{
if (!myModalDropped)
{
DoCancelMouse();
}
else
{
StopTool();
}
base.Selection.HotSpot = default(SizeF);
}
}
}
