public override int Update(IntPtr handle, IntPtr device, int x, int y, int w, int h)
{
int bytesPerPixel = 3; // for now Format24bppRgb only
if (_srcImage != IntPtr.Zero)
{
_destImage.Lock();
int destStrideSize = (((_destImage.Width * bytesPerPixel) + 3) & ~3);
int tileStride = (((w * bytesPerPixel) + 3) & ~3);
if (_synchTriggered)
{
_synchTriggered = false;
ImageMemoryHelper.Set24bppRgbImageColor(_destImage.Scan0, _destImage.Width, _destImage.Height, 255, 255, 255);
}
if (w == _destImage.Width && h == _destImage.Height)
{
//IntPtr bkp = Marshal.AllocCoTaskMem(destStrideSize * h);
//ImageMemoryHelper.CopyImagePartFrom(_destImage.Scan0, bkp, 0, 0, w, h, destStrideSize, bytesPerPixel);
//ImageMemoryHelper.CopyImagePartTo(_destImage.Scan0, _srcImage, 0, 0, w, h, destStrideSize, bytesPerPixel);
//ImageMemoryHelper.CopyImagePartTo(_destImage.Scan0, bkp, 0, 0, w, h, destStrideSize, bytesPerPixel);
//Marshal.FreeCoTaskMem(bkp);
_destImage.Unlock();
return(0);
}
IntPtr tempTile = Marshal.AllocCoTaskMem(tileStride * h);
ImageMemoryHelper.CopyImagePartFrom(_srcImage, tempTile, x, y, w, h, _srcStride, bytesPerPixel);
ImageMemoryHelper.FlipImageVertically(tempTile, tempTile, h, tileStride);
int tileMirrorY = _destImage.Height - y - h;
ImageMemoryHelper.CopyImagePartTo(_destImage.Scan0, tempTile, x, tileMirrorY, w, h, destStrideSize, bytesPerPixel);
Marshal.FreeCoTaskMem(tempTile);
_destImage.Unlock();
if (Environment.TickCount - _lastUpdateTime > _viewer.ProgressiveUpdateInterval)
{
_lastUpdateTime = Environment.TickCount;
_viewer.RaiseDisplayUpdate(new GhostscriptViewerViewEventArgs(_destImage, new Rectangle(0, 0, _destImage.Width, _destImage.Height)));
}
}
return(0);
}
public override int Page(IntPtr handle, IntPtr device, int copies, int flush)
{
_viewer.FormatHandler.ShowPagePostScriptCommandInvoked = true;
if (!_viewer.ProgressiveUpdate)
{
int bytesPerPixel = 3;
_destImage.Lock();
IntPtr tempTile = Marshal.AllocHGlobal(_destImage.Stride * _destImage.Height);
ImageMemoryHelper.CopyImagePartFrom(_srcImage, tempTile, 0, 0, _destImage.Width, _destImage.Height, _srcStride, bytesPerPixel);
ImageMemoryHelper.FlipImageVertically(tempTile, _destImage.Scan0, _destImage.Height, _destImage.Stride);
Marshal.FreeHGlobal(tempTile);
_destImage.Unlock();
}
_viewer.RaiseDisplayPage(new GhostscriptViewerViewEventArgs(_destImage, new Rectangle(0, 0, _destImage.Width, _destImage.Height)));
return(0);
}
