protected override HistoryMemento OnUndo(ProgressEventHandler progressCallback)
{
BitmapHistoryMementoData data = base.Data as BitmapHistoryMementoData;
BitmapLayer layer = (BitmapLayer)this.historyWorkspace.Document.Layers[this.layerIndex];
RectInt32[] savedRegion = data.SavedRegion;
MaskedSurface surface = null;
BitmapHistoryMemento memento = new BitmapHistoryMemento(base.Name, base.Image, this.historyWorkspace, this.layerIndex, savedRegion);
if (surface != null)
{
surface.Draw(layer.Surface);
}
else
{
using (FileStream stream = FileSystem.OpenStreamingFile(this.tempFileName, FileAccess.Read))
{
LoadSurfaceRegion(stream, layer.Surface, data.SavedRegion);
}
this.tempFileHandle.Dispose();
this.tempFileHandle = null;
}
if (savedRegion.Length != 0)
{
RectInt32 roi = savedRegion.Bounds();
layer.Invalidate(roi);
}
return(memento);
}
protected override HistoryMemento OnUndo()
{
BitmapHistoryMementoData data = this.Data as BitmapHistoryMementoData;
BitmapLayer layer = (BitmapLayer)this.historyWorkspace.Document.Layers[this.layerIndex];
PdnRegion region;
MaskedSurface maskedSurface = null;
if (this.poMaskedSurfaceRef != Guid.Empty)
{
PersistedObject <MaskedSurface> poMS = PersistedObjectLocker.Get <MaskedSurface>(this.poMaskedSurfaceRef);
maskedSurface = poMS.Object;
region = maskedSurface.CreateRegion();
}
else if (data.UndoImage == null)
{
region = data.SavedRegion;
}
else
{
region = data.UndoImage.Region;
}
BitmapHistoryMemento redo;
if (this.poUndoMaskedSurfaceRef == Guid.Empty)
{
redo = new BitmapHistoryMemento(Name, Image, this.historyWorkspace, this.layerIndex, region);
redo.poUndoMaskedSurfaceRef = this.poMaskedSurfaceRef;
}
else
{
redo = new BitmapHistoryMemento(Name, Image, this.historyWorkspace, this.layerIndex, this.poUndoMaskedSurfaceRef);
}
PdnRegion simplified = Utility.SimplifyAndInflateRegion(region);
if (maskedSurface != null)
{
maskedSurface.Draw(layer.Surface);
}
else if (data.UndoImage == null)
{
using (FileStream input = FileSystem.OpenStreamingFile(this.tempFileName, FileAccess.Read))
{
LoadSurfaceRegion(input, layer.Surface, data.SavedRegion);
}
data.SavedRegion.Dispose();
this.tempFileHandle.Dispose();
this.tempFileHandle = null;
}
else
{
data.UndoImage.Draw(layer.Surface);
data.UndoImage.Dispose();
}
layer.Invalidate(simplified);
simplified.Dispose();
return(redo);
}
public bool PerformAction()
{
bool success = true;
if (this.documentWorkspace.Selection.IsEmpty ||
!(this.documentWorkspace.ActiveLayer is BitmapLayer))
{
return false;
}
try
{
using (new WaitCursorChanger(this.documentWorkspace))
{
Utility.GCFullCollect();
PdnRegion selectionRegion = this.documentWorkspace.Selection.CreateRegion();
PdnGraphicsPath selectionOutline = this.documentWorkspace.Selection.CreatePath();
BitmapLayer activeLayer = (BitmapLayer)this.documentWorkspace.ActiveLayer;
RenderArgs renderArgs = new RenderArgs(activeLayer.Surface);
MaskedSurface maskedSurface = new MaskedSurface(renderArgs.Surface, selectionOutline);
SurfaceForClipboard surfaceForClipboard = new SurfaceForClipboard(maskedSurface);
Rectangle selectionBounds = Utility.GetRegionBounds(selectionRegion);
if (selectionBounds.Width > 0 && selectionBounds.Height > 0)
{
Surface copySurface = new Surface(selectionBounds.Width, selectionBounds.Height);
Bitmap copyBitmap = copySurface.CreateAliasedBitmap();
Bitmap copyOpaqueBitmap = new Bitmap(copySurface.Width, copySurface.Height, PixelFormat.Format24bppRgb);
using (Graphics copyBitmapGraphics = Graphics.FromImage(copyBitmap))
{
copyBitmapGraphics.Clear(Color.White);
}
maskedSurface.Draw(copySurface, -selectionBounds.X, -selectionBounds.Y);
using (Graphics copyOpaqueBitmapGraphics = Graphics.FromImage(copyOpaqueBitmap))
{
copyOpaqueBitmapGraphics.Clear(Color.White);
copyOpaqueBitmapGraphics.DrawImage(copyBitmap, 0, 0);
}
DataObject dataObject = new DataObject();
dataObject.SetData(DataFormats.Bitmap, copyOpaqueBitmap);
dataObject.SetData(surfaceForClipboard);
int retryCount = 2;
while (retryCount >= 0)
{
try
{
using (new WaitCursorChanger(this.documentWorkspace))
{
Clipboard.SetDataObject(dataObject, true);
}
break;
}
catch
{
if (retryCount == 0)
{
success = false;
Utility.ErrorBox(this.documentWorkspace,
PdnResources.GetString("CopyAction.Error.TransferToClipboard"));
}
else
{
Thread.Sleep(200);
}
}
finally
{
--retryCount;
}
}
copySurface.Dispose();
copyBitmap.Dispose();
copyOpaqueBitmap.Dispose();
}
selectionRegion.Dispose();
selectionOutline.Dispose();
renderArgs.Dispose();
maskedSurface.Dispose();
}
}
catch (OutOfMemoryException)
{
success = false;
Utility.ErrorBox(this.documentWorkspace, PdnResources.GetString("CopyAction.Error.OutOfMemory"));
}
catch (Exception)
{
success = false;
Utility.ErrorBox(this.documentWorkspace, PdnResources.GetString("CopyAction.Error.Generic"));
}
Utility.GCFullCollect();
return success;
}
public bool PerformAction()
{
bool success = true;
if (this.documentWorkspace.Selection.IsEmpty ||
!(this.documentWorkspace.ActiveLayer is BitmapLayer))
{
return(false);
}
try
{
using (new WaitCursorChanger(this.documentWorkspace))
{
Utility.GCFullCollect();
PdnRegion selectionRegion = this.documentWorkspace.Selection.CreateRegion();
PdnGraphicsPath selectionOutline = this.documentWorkspace.Selection.CreatePath();
BitmapLayer activeLayer = (BitmapLayer)this.documentWorkspace.ActiveLayer;
RenderArgs renderArgs = new RenderArgs(activeLayer.Surface);
MaskedSurface maskedSurface = new MaskedSurface(renderArgs.Surface, selectionOutline);
SurfaceForClipboard surfaceForClipboard = new SurfaceForClipboard(maskedSurface);
Rectangle selectionBounds = Utility.GetRegionBounds(selectionRegion);
if (selectionBounds.Width > 0 && selectionBounds.Height > 0)
{
Surface copySurface = new Surface(selectionBounds.Width, selectionBounds.Height);
Bitmap copyBitmap = copySurface.CreateAliasedBitmap();
Bitmap copyOpaqueBitmap = new Bitmap(copySurface.Width, copySurface.Height, PixelFormat.Format24bppRgb);
using (Graphics copyBitmapGraphics = Graphics.FromImage(copyBitmap))
{
copyBitmapGraphics.Clear(Color.White);
}
maskedSurface.Draw(copySurface, -selectionBounds.X, -selectionBounds.Y);
using (Graphics copyOpaqueBitmapGraphics = Graphics.FromImage(copyOpaqueBitmap))
{
copyOpaqueBitmapGraphics.Clear(Color.White);
copyOpaqueBitmapGraphics.DrawImage(copyBitmap, 0, 0);
}
DataObject dataObject = new DataObject();
dataObject.SetData(DataFormats.Bitmap, copyOpaqueBitmap);
dataObject.SetData(surfaceForClipboard);
int retryCount = 2;
while (retryCount >= 0)
{
try
{
using (new WaitCursorChanger(this.documentWorkspace))
{
Clipboard.SetDataObject(dataObject, true);
}
break;
}
catch
{
if (retryCount == 0)
{
success = false;
Utility.ErrorBox(this.documentWorkspace,
PdnResources.GetString("CopyAction.Error.TransferToClipboard"));
}
else
{
Thread.Sleep(200);
}
}
finally
{
--retryCount;
}
}
copySurface.Dispose();
copyBitmap.Dispose();
copyOpaqueBitmap.Dispose();
}
selectionRegion.Dispose();
selectionOutline.Dispose();
renderArgs.Dispose();
maskedSurface.Dispose();
}
}
catch (OutOfMemoryException)
{
success = false;
Utility.ErrorBox(this.documentWorkspace, PdnResources.GetString("CopyAction.Error.OutOfMemory"));
}
catch (Exception)
{
success = false;
Utility.ErrorBox(this.documentWorkspace, PdnResources.GetString("CopyAction.Error.Generic"));
}
Utility.GCFullCollect();
return(success);
}