/// <summary>
/// Pastes from the clipboard into the document.
/// </summary>
/// <returns>true if the paste operation completed, false if there was an error or if it was cancelled for some reason</returns>
public bool PerformAction()
{
SurfaceForClipboard surfaceForClipboard = null;
IDataObject clipData = null;
try
{
Utility.GCFullCollect();
clipData = Clipboard.GetDataObject();
}
catch (ExternalException)
{
Utility.ErrorBox(this.documentWorkspace, PdnResources.GetString("PasteAction.Error.TransferFromClipboard"));
return(false);
}
catch (OutOfMemoryException)
{
Utility.ErrorBox(this.documentWorkspace, PdnResources.GetString("PasteAction.Error.OutOfMemory"));
return(false);
}
// First "ask" the current tool if it wants to handle it
bool handledByTool = false;
if (this.documentWorkspace.Tool != null)
{
this.documentWorkspace.Tool.PerformPaste(clipData, out handledByTool);
}
if (handledByTool)
{
return(true);
}
if (clipData.GetDataPresent(typeof(SurfaceForClipboard)))
{
try
{
Utility.GCFullCollect();
surfaceForClipboard = clipData.GetData(typeof(SurfaceForClipboard)) as SurfaceForClipboard;
}
catch (OutOfMemoryException)
{
Utility.ErrorBox(this.documentWorkspace, PdnResources.GetString("PasteAction.Error.OutOfMemory"));
return(false);
}
}
if (surfaceForClipboard != null && surfaceForClipboard.MaskedSurface.IsDisposed)
{
// Have been getting crash reports where sfc contains a disposed MaskedSurface ...
surfaceForClipboard = null;
}
if (surfaceForClipboard == null &&
clipData.GetDataPresent(DataFormats.Bitmap))
{
Image image;
try
{
Utility.GCFullCollect();
image = (Image)clipData.GetData(DataFormats.Bitmap);
}
catch (OutOfMemoryException)
{
Utility.ErrorBox(this.documentWorkspace, PdnResources.GetString("PasteAction.Error.OutOfMemory"));
return(false);
}
// Sometimes we get weird errors if we're in, say, 16-bit mode but the image was copied
// to the clipboard in 32-bit mode
if (image == null)
{
Utility.ErrorBox(this.documentWorkspace, PdnResources.GetString("PasteAction.Error.NotRecognized"));
return(false);
}
MaskedSurface maskedSurface = null;
try
{
Utility.GCFullCollect();
Bitmap bitmap;
Surface surface = null;
if (image is Bitmap)
{
bitmap = (Bitmap)image;
image = null;
}
else
{
bitmap = new Bitmap(image);
image.Dispose();
}
surface = Surface.CopyFromBitmap(bitmap);
bitmap.Dispose();
bitmap = null;
maskedSurface = new MaskedSurface(surface, new PdnRegion(surface.Bounds));
surface.Dispose();
surface = null;
}
catch (Exception)
{
Utility.ErrorBox(this.documentWorkspace, PdnResources.GetString("PasteAction.Error.OutOfMemory"));
return(false);
}
surfaceForClipboard = new SurfaceForClipboard(maskedSurface);
}
if (surfaceForClipboard == null || surfaceForClipboard.MaskedSurface == null)
{
// silently fail: like what if a program overwrote the clipboard in between the time
// we enabled the "Paste" menu item and the user actually clicked paste?
// it could happen!
Utility.ErrorBox(this.documentWorkspace, PdnResources.GetString("PasteAction.Error.NoImage"));
return(false);
}
// If the image is larger than the document, ask them if they'd like to make the image larger first
Rectangle bounds = surfaceForClipboard.Bounds;
if (bounds.Width > this.documentWorkspace.Document.Width ||
bounds.Height > this.documentWorkspace.Document.Height)
{
DialogResult dr = MessageBox.Show(
this.documentWorkspace,
PdnResources.GetString("PasteAction.Question.ExpandCanvas"),
PdnInfo.GetAppName(),
MessageBoxButtons.YesNoCancel,
MessageBoxIcon.Question);
int layerIndex = this.documentWorkspace.ActiveLayerIndex;
switch (dr)
{
case DialogResult.Yes:
Size newSize = new Size(Math.Max(bounds.Width, this.documentWorkspace.Document.Width),
Math.Max(bounds.Height, this.documentWorkspace.Document.Height));
Document newDoc = CanvasSizeAction.ResizeDocument(
this.documentWorkspace.Document,
newSize,
AnchorEdge.TopLeft,
this.documentWorkspace.AppWorkspace.AppEnvironment.SecondaryColor);
if (newDoc == null)
{
return(false); // user clicked cancel!
}
else
{
HistoryMemento rdha = new ReplaceDocumentHistoryMemento(
CanvasSizeAction.StaticName,
CanvasSizeAction.StaticImage,
this.documentWorkspace);
this.documentWorkspace.Document = newDoc;
this.documentWorkspace.History.PushNewMemento(rdha);
this.documentWorkspace.ActiveLayer = (Layer)this.documentWorkspace.Document.Layers[layerIndex];
}
break;
case DialogResult.No:
break;
case DialogResult.Cancel:
return(false);
default:
throw new InvalidEnumArgumentException("Internal error: DialogResult was neither Yes, No, nor Cancel");
}
}
// Decide where to paste to: If the paste is within bounds of the document, do as normal
// Otherwise, center it.
Rectangle docBounds = this.documentWorkspace.Document.Bounds;
Rectangle intersect1 = Rectangle.Intersect(docBounds, bounds);
bool doMove = intersect1 != bounds; //intersect1.IsEmpty;
Point pasteOffset;
if (doMove)
{
pasteOffset = new Point(-bounds.X + (docBounds.Width / 2) - (bounds.Width / 2),
-bounds.Y + (docBounds.Height / 2) - (bounds.Height / 2));
}
else
{
pasteOffset = new Point(0, 0);
}
// Paste to the place it was originally copied from (for PDN-to-PDN transfers)
// and then if its not pasted within the viewable rectangle we pan to that location
RectangleF visibleDocRectF = this.documentWorkspace.VisibleDocumentRectangleF;
Rectangle visibleDocRect = Utility.RoundRectangle(visibleDocRectF);
Rectangle bounds2 = new Rectangle(new Point(bounds.X + pasteOffset.X, bounds.Y + pasteOffset.Y), bounds.Size);
Rectangle intersect2 = Rectangle.Intersect(bounds2, visibleDocRect);
bool doPan = intersect2.IsEmpty;
this.documentWorkspace.SetTool(null);
this.documentWorkspace.SetToolFromType(typeof(MoveTool));
((MoveTool)this.documentWorkspace.Tool).PasteMouseDown(surfaceForClipboard, pasteOffset);
if (doPan)
{
Point centerPtView = new Point(visibleDocRect.Left + (visibleDocRect.Width / 2),
visibleDocRect.Top + (visibleDocRect.Height / 2));
Point centerPtPasted = new Point(bounds2.Left + (bounds2.Width / 2),
bounds2.Top + (bounds2.Height / 2));
Size delta = new Size(centerPtPasted.X - centerPtView.X,
centerPtPasted.Y - centerPtView.Y);
PointF docScrollPos = this.documentWorkspace.DocumentScrollPositionF;
PointF newDocScrollPos = new PointF(docScrollPos.X + delta.Width,
docScrollPos.Y + delta.Height);
this.documentWorkspace.DocumentScrollPositionF = newDocScrollPos;
}
return(true);
}