private bool PerformActionImpl()
{
PointInt32 num2;
RectInt32 num3;
if (this.clipData == null)
{
try
{
using (new WaitCursorChanger(this.documentWorkspace))
{
CleanupManager.RequestCleanup();
this.clipData = PdnClipboard.GetDataObject();
}
}
catch (OutOfMemoryException exception)
{
ExceptionDialog.ShowErrorDialog(this.documentWorkspace, PdnResources.GetString("PasteAction.Error.OutOfMemory"), exception);
return(false);
}
catch (Exception exception2)
{
ExceptionDialog.ShowErrorDialog(this.documentWorkspace, PdnResources.GetString("PasteAction.Error.TransferFromClipboard"), exception2);
return(false);
}
}
bool handled = false;
if (this.documentWorkspace.Tool != null)
{
this.documentWorkspace.Tool.PerformPaste(this.clipData, out handled);
}
if (handled)
{
return(true);
}
if (this.maskedSurface == null)
{
try
{
using (new WaitCursorChanger(this.documentWorkspace))
{
this.maskedSurface = ClipboardUtil.GetClipboardImage(this.documentWorkspace, this.clipData);
}
}
catch (OutOfMemoryException exception3)
{
ExceptionDialog.ShowErrorDialog(this.documentWorkspace, PdnResources.GetString("PasteAction.Error.OutOfMemory"), exception3);
return(false);
}
catch (Exception exception4)
{
ExceptionDialog.ShowErrorDialog(this.documentWorkspace, PdnResources.GetString("PasteAction.Error.TransferFromClipboard"), exception4);
return(false);
}
}
if (this.maskedSurface == null)
{
MessageBoxUtil.ErrorBox(this.documentWorkspace, PdnResources.GetString("PasteAction.Error.NoImage"));
return(false);
}
RectInt32 cachedGeometryMaskScansBounds = this.maskedSurface.GetCachedGeometryMaskScansBounds();
if ((cachedGeometryMaskScansBounds.Width > this.documentWorkspace.Document.Width) || (cachedGeometryMaskScansBounds.Height > this.documentWorkspace.Document.Height))
{
Surface surface;
try
{
using (new WaitCursorChanger(this.documentWorkspace))
{
surface = CreateThumbnail(this.maskedSurface);
}
}
catch (OutOfMemoryException)
{
surface = null;
}
DialogResult result = ShowExpandCanvasTaskDialog(this.documentWorkspace, surface);
int activeLayerIndex = this.documentWorkspace.ActiveLayerIndex;
ColorBgra background = this.documentWorkspace.ToolSettings.SecondaryColor.Value;
if (result != DialogResult.Cancel)
{
if (result != DialogResult.Yes)
{
if (result != DialogResult.No)
{
throw ExceptionUtil.InvalidEnumArgumentException <DialogResult>(result, "dr");
}
goto Label_031D;
}
using (new PushNullToolMode(this.documentWorkspace))
{
int width = Math.Max(cachedGeometryMaskScansBounds.Width, this.documentWorkspace.Document.Width);
Size newSize = new Size(width, Math.Max(cachedGeometryMaskScansBounds.Height, this.documentWorkspace.Document.Height));
Document document = CanvasSizeAction.ResizeDocument(this.documentWorkspace.Document, newSize, AnchorEdge.TopLeft, background);
if (document == null)
{
return(false);
}
SelectionHistoryMemento memento = new SelectionHistoryMemento(null, null, this.documentWorkspace);
ReplaceDocumentHistoryMemento memento2 = new ReplaceDocumentHistoryMemento(CanvasSizeAction.StaticName, CanvasSizeAction.StaticImage, this.documentWorkspace);
this.documentWorkspace.Document = document;
HistoryMemento[] actions = new HistoryMemento[] { memento, memento2 };
CompoundHistoryMemento memento3 = new CompoundHistoryMemento(CanvasSizeAction.StaticName, CanvasSizeAction.StaticImage, actions);
this.documentWorkspace.History.PushNewMemento(memento3);
this.documentWorkspace.ActiveLayer = (Layer)this.documentWorkspace.Document.Layers[activeLayerIndex];
goto Label_031D;
}
}
return(false);
}
Label_031D:
num3 = this.documentWorkspace.Document.Bounds();
RectDouble visibleDocumentRect = this.documentWorkspace.VisibleDocumentRect;
RectInt32? nullable = visibleDocumentRect.Int32Inset();
RectDouble num5 = nullable.HasValue ? ((RectDouble)nullable.Value) : visibleDocumentRect;
RectInt32 num6 = num5.Int32Bound;
if (num5.Contains(cachedGeometryMaskScansBounds))
{
num2 = new PointInt32(0, 0);
}
else
{
int num12;
int num13;
int num16;
int num17;
if (cachedGeometryMaskScansBounds.X < num5.Left)
{
num12 = -cachedGeometryMaskScansBounds.X + num6.X;
}
else if (cachedGeometryMaskScansBounds.Right > num6.Right)
{
num12 = (-cachedGeometryMaskScansBounds.X + num6.Right) - cachedGeometryMaskScansBounds.Width;
}
else
{
num12 = 0;
}
if (cachedGeometryMaskScansBounds.Y < num5.Top)
{
num13 = -cachedGeometryMaskScansBounds.Y + num6.Y;
}
else if (cachedGeometryMaskScansBounds.Bottom > num6.Bottom)
{
num13 = (-cachedGeometryMaskScansBounds.Y + num6.Bottom) - cachedGeometryMaskScansBounds.Height;
}
else
{
num13 = 0;
}
PointInt32 num14 = new PointInt32(num12, num13);
RectInt32 num15 = new RectInt32(cachedGeometryMaskScansBounds.X + num14.X, cachedGeometryMaskScansBounds.Y + num14.Y, cachedGeometryMaskScansBounds.Width, cachedGeometryMaskScansBounds.Height);
if (num15.X < 0)
{
num16 = num12 - num15.X;
}
else
{
num16 = num12;
}
if (num15.Y < 0)
{
num17 = num13 - num15.Y;
}
else
{
num17 = num13;
}
PointInt32 num18 = new PointInt32(num16, num17);
RectInt32 rect = new RectInt32(cachedGeometryMaskScansBounds.X + num18.X, cachedGeometryMaskScansBounds.Y + num18.Y, cachedGeometryMaskScansBounds.Width, cachedGeometryMaskScansBounds.Height);
if (num3.Contains(rect))
{
num2 = num18;
}
else
{
PointInt32 num20 = num18;
if (rect.Right > num3.Right)
{
int num21 = rect.Right - num3.Right;
int num22 = Math.Min(num21, rect.Left);
num20.X -= num22;
}
if (rect.Bottom > num3.Bottom)
{
int num23 = rect.Bottom - num3.Bottom;
int num24 = Math.Min(num23, rect.Top);
num20.Y -= num24;
}
num2 = num20;
}
}
RectInt32 b = this.documentWorkspace.VisibleDocumentRect.Int32Bound;
RectInt32 a = new RectInt32(cachedGeometryMaskScansBounds.X + num2.X, cachedGeometryMaskScansBounds.Y + num2.Y, cachedGeometryMaskScansBounds.Width, cachedGeometryMaskScansBounds.Height);
bool hasZeroArea = RectInt32.Intersect(a, b).HasZeroArea;
MoveTool.BeginPaste(this.documentWorkspace, PdnResources.GetString("CommonAction.Paste"), PdnResources.GetImageResource("Icons.MenuEditPasteIcon.png"), this.maskedSurface.SurfaceReadOnly, this.maskedSurface.GeometryMask, num2);
if (hasZeroArea)
{
PointInt32 num25 = new PointInt32(b.Left + (b.Width / 2), b.Top + (b.Height / 2));
PointInt32 num26 = new PointInt32(a.Left + (a.Width / 2), a.Top + (a.Height / 2));
SizeInt32 num27 = new SizeInt32(num26.X - num25.X, num26.Y - num25.Y);
PointDouble documentScrollPosition = this.documentWorkspace.DocumentScrollPosition;
PointDouble num29 = new PointDouble(documentScrollPosition.X + num27.Width, documentScrollPosition.Y + num27.Height);
this.documentWorkspace.DocumentScrollPosition = num29;
}
return(true);
}