コード例 #1
0
        public void Dispose()
        {
            lock (_locker)
            {
                if (_nativeXps != null)
                {
                    Task.Run(async() =>
                    {
                        while (!CanDispose)
                        {
                            await Task.Delay(2000);
                        }

                        try
                        {
                            _nativeXps.Dispose();
                            _nativeXps = null;
                            _dataHandle.Free();
                        }
                        catch
                        {
                        }
                    });
                }
            }
        }
コード例 #2
0
        public TilesManager(Stream xpsStream)
        {
            if (xpsStream == null)
            {
                return;
            }
            var errorBuffer = new byte[256];
            var errorHandle = GCHandle.Alloc(errorBuffer, GCHandleType.Pinned);
            var dataBuffer  = StreamToByteArray(xpsStream);

            _dataHandle = GCHandle.Alloc(dataBuffer, GCHandleType.Pinned);
            try
            {
                lock (_locker)
                {
                    if (_nativeXps != null)
                    {
                        throw new RenderException("Already initialized");
                    }

                    var pageCount    = 0;
                    var xpsNativePtr = RenderLibrary.open_xps_with_stream(
                        _dataHandle.AddrOfPinnedObject(),
                        dataBuffer.Length,
                        ref pageCount,
                        errorHandle.AddrOfPinnedObject(),
                        errorBuffer.Length);

                    if (xpsNativePtr == IntPtr.Zero)
                    {
                        var nativeError = Encoding.UTF8.GetString(errorBuffer).TrimEnd((char)0);
                        throw new Exception(nativeError);
                    }

                    if (pageCount == 0)
                    {
                        throw new Exception("Initialization failed");
                    }

                    _nativeXps = new NativeXps(xpsNativePtr, pageCount, _dataHandle);
                }
            }
            catch (RenderException)
            {
                _dataHandle.Free();
                _nativeXps = null;
                throw;
            }
            catch (Exception e)
            {
                _dataHandle.Free();
                _nativeXps = null;
                throw new RenderException("Initialization failed");
            }
            finally
            {
                errorHandle.Free();
            }
        }