public UIElement CreateVisual(VirtualCanvas parent)
{
if (_visual == null && _tileBuf != null && _tileBuf.Length == TileWidth * TileHeight * 3)
{
ImageSource source = BitmapSource.Create(TileWidth, TileHeight, 96, 96,
PixelFormats.Rgb24, null, _tileBuf, TileWidth * 3);
// Fill rectangle with an ImageBrush
_rect.Fill = new ImageBrush(source); // StrideSize = 768 = 1 Tile * 3 Channels * 256 pixels
_visual = _rect;
}
return(_visual);
}
public UIElement CreateVisual(VirtualCanvas parent)
{
if (_visual == null)
{
byte[] targetBuffer = new byte[256 * 256 * 3];
// var stopWatch = Stopwatch.StartNew();
// 【期待加速】
// Task t1 = Task.Factory.StartNew(() =>
// {
// MemoryStream stream1 = new MemoryStream(_tileTiffBuffer, false);
// TiffStream streamTIFF1 = new TiffStream();
// Tiff tiff_file = Tiff.ClientOpen("In-Memory-Target", "r", stream1, streamTIFF1);
_inputTiffFile.SetDirectory((short)_currentPage); // page必须为short类型
int tile_width = _inputTiffFile.GetField(TiffTag.TILEWIDTH)[0].ToInt();
int image_width = _inputTiffFile.GetField(TiffTag.IMAGEWIDTH)[0].ToInt();
int tile_xCount = image_width / tile_width;
_inputTiffFile.ReadEncodedTile(_xGrid + _yGrid * tile_xCount, targetBuffer, 0, tile_width * tile_width * 3);
// });
// t1.Wait();
// 耗时 10ms - 12ms
// Console.WriteLine("1加载1个tile耗时 = {0} us\n", stopWatch.Elapsed.TotalSeconds * 1000000);
// 耗时 200us
ImageBrush imgBrush = new ImageBrush(BitmapSource.Create(256, 256, 96d, 96d,
PixelFormats.Rgb24, null, targetBuffer, 768)); // StrideSize = 768 = 1 Tile * 3 Channels * 256 pixels
// Fill rectangle with an ImageBrush
_rect.Fill = imgBrush;
_visual = _rect;
/*********************************** 多线程更新 *************************************/
// Action<UIElement,ImageBrush> updateAction = new Action<UIElement, ImageBrush>(UpdateShape);
// parent.Dispatcher.BeginInvoke(updateAction, _visual, imgBrush);
// Task.Factory.StartNew(() => UpdateShape(_visual, imgBrush),
// new CancellationTokenSource().Token, TaskCreationOptions.None, _syncContextTaskScheduler).Wait();
// Task.Factory.StartNew(() => UpdateShape(_visual, imgBrush), new CancellationTokenSource().Token).Wait();
}
return(_visual);
}
public Byte[] AcquireVisualData(VirtualCanvas parent)
{
Byte[] targetBuffer = new byte[256 * 256 * 3];
MemoryStream stream1 = new MemoryStream(_tileTiffBuffer, false);
TiffStream streamTIFF1 = new TiffStream();
Tiff tiff_file = Tiff.ClientOpen("In-Memory-Target", "r", stream1, streamTIFF1);
tiff_file.SetDirectory((short)_currentPage); // page必须为short类型
int tile_width = tiff_file.GetField(TiffTag.TILEWIDTH)[0].ToInt();
int image_width = tiff_file.GetField(TiffTag.IMAGEWIDTH)[0].ToInt();
int tile_xCount = image_width / tile_width;
tiff_file.ReadEncodedTile(_xGrid + _yGrid * tile_xCount, targetBuffer, 0, tile_width * tile_width * 3);
return(targetBuffer);
}
public bool FillVisualData(VirtualCanvas parent)
{
int offset = 0;
if (_tileBuf == null && _currentPage == 1)
{
_tileBuf = new byte[TileWidth * TileHeight * 3];
int _xGrid = (int)(_bounds.X / TileWidth);
int _yGrid = (int)(_bounds.Y / TileHeight);
Tiff tiff_file = Tiff.ClientOpen("In-Memory-Target", "r", new MemoryStream(_tiffFileBuffer, false), new TiffStream());
tiff_file.SetDirectory((short)_currentPage); // page必须为short类型
int tile_width = tiff_file.GetField(TiffTag.TILEWIDTH)[0].ToInt();
int image_width = tiff_file.GetField(TiffTag.IMAGEWIDTH)[0].ToInt();
// int tile_width = 66 * 256/4;
// int image_width = 65 * 256/4;
int tile_xCount = image_width / tile_width / 4;
if (tile_xCount * tile_width < image_width)
{
offset = 1;
}
//creatVisualFromDisk(_xGrid, _yGrid,out _tileBuf,(int) _currentPage);如果想从文件夹里面读取要这样
int result = tiff_file.ReadEncodedTile(_xGrid + _yGrid * (tile_xCount + offset), _tileBuf, 0, tile_width * tile_width * 3);
if (_tileBuf.Length != TileWidth * TileHeight * 3)
{
return(false); // _tileBuf is loaded with error.
}
else
{
return(true);
}
}
else if (_tileBuf == null && _currentPage == 0)
{
_tileBuf = new byte[TileWidth * TileHeight * 3];
int _xGrid = (int)(_bounds.X / TileWidth);
int _yGrid = (int)(_bounds.Y / TileHeight);
Tiff tiff_file = Tiff.ClientOpen("In-Memory-Target", "r", new MemoryStream(_tiffFileBuffer, false), new TiffStream());
tiff_file.SetDirectory((short)_currentPage); // page必须为short类型
int tile_width = tiff_file.GetField(TiffTag.TILEWIDTH)[0].ToInt();
int image_width = tiff_file.GetField(TiffTag.IMAGEWIDTH)[0].ToInt();
//int tile_width = 66 * 256 ;
// int image_width = 65 * 256;
int tile_xCount = image_width / tile_width;
if (tile_xCount * tile_width < image_width)
{
offset = 1;
}
//creatVisualFromDisk(_xGrid, _yGrid, out _tileBuf, (int)_currentPage);
int result = tiff_file.ReadEncodedTile(_xGrid + _yGrid * (tile_xCount + offset), _tileBuf, 0, tile_width * tile_width * 3);
if (_tileBuf.Length != TileWidth * TileHeight * 3)
{
return(false); // _tileBuf is loaded with error.
}
else
{
return(true);
}
}
else
{
return(false); // _tileBuf is filled before;
}
}
void System.Windows.Markup.IComponentConnector.Connect(int connectionId, object target)
{
switch (connectionId)
{
case 1:
this.ScrollImageViewer = ((System.Windows.Controls.ScrollViewer)(target));
#line 18 "..\..\..\ImageViewer\ImageViewer.xaml"
this.ScrollImageViewer.PreviewKeyDown += new System.Windows.Input.KeyEventHandler(this.ScrollImageViewer_PreviewKeyDown);
#line default
#line hidden
return;
case 2:
this.gridViewer = ((System.Windows.Controls.Grid)(target));
return;
case 3:
this.gridContainer = ((System.Windows.Controls.Grid)(target));
#line 22 "..\..\..\ImageViewer\ImageViewer.xaml"
this.gridContainer.PreviewMouseMove += new System.Windows.Input.MouseEventHandler(this.OnPreviewMouseMove);
#line default
#line hidden
return;
case 4:
this.imageCanvas = ((VirtualCanvasLib.VirtualCanvas)(target));
return;
case 5:
this.annotationCanvas = ((DrawToolsLib.DrawingCanvas)(target));
return;
case 6:
this.magnifierCanvas = ((System.Windows.Controls.Canvas)(target));
return;
case 7:
this.magnifierEllipse = ((System.Windows.Shapes.Rectangle)(target));
return;
case 8:
this.vbMagnifier = ((System.Windows.Media.VisualBrush)(target));
return;
case 9:
this.labelImageCanvas = ((System.Windows.Controls.Canvas)(target));
return;
case 10:
this.zoombarCanvas = ((System.Windows.Controls.Canvas)(target));
return;
case 11:
this.btnZoomFit = ((System.Windows.Controls.Button)(target));
#line 61 "..\..\..\ImageViewer\ImageViewer.xaml"
this.btnZoomFit.Click += new System.Windows.RoutedEventHandler(this.btnZoomFit_Click);
#line default
#line hidden
return;
case 12:
this.btnZoom1x = ((System.Windows.Controls.Button)(target));
#line 66 "..\..\..\ImageViewer\ImageViewer.xaml"
this.btnZoom1x.Click += new System.Windows.RoutedEventHandler(this.btnZoom1x_Click);
#line default
#line hidden
return;
case 13:
this.btnZoom2x = ((System.Windows.Controls.Button)(target));
#line 71 "..\..\..\ImageViewer\ImageViewer.xaml"
this.btnZoom2x.Click += new System.Windows.RoutedEventHandler(this.btnZoom2x_Click);
#line default
#line hidden
return;
case 14:
this.btnZoom4x = ((System.Windows.Controls.Button)(target));
#line 76 "..\..\..\ImageViewer\ImageViewer.xaml"
this.btnZoom4x.Click += new System.Windows.RoutedEventHandler(this.btnZoom4x_Click);
#line default
#line hidden
return;
case 15:
this.btnZoom5x = ((System.Windows.Controls.Button)(target));
#line 81 "..\..\..\ImageViewer\ImageViewer.xaml"
this.btnZoom5x.Click += new System.Windows.RoutedEventHandler(this.btnZoom5x_Click);
#line default
#line hidden
return;
case 16:
this.btnZoom10x = ((System.Windows.Controls.Button)(target));
#line 86 "..\..\..\ImageViewer\ImageViewer.xaml"
this.btnZoom10x.Click += new System.Windows.RoutedEventHandler(this.btnZoom10x_Click);
#line default
#line hidden
return;
case 17:
this.btnZoom20x = ((System.Windows.Controls.Button)(target));
#line 91 "..\..\..\ImageViewer\ImageViewer.xaml"
this.btnZoom20x.Click += new System.Windows.RoutedEventHandler(this.btnZoom20x_Click);
#line default
#line hidden
return;
case 18:
this.zoomSlider = ((System.Windows.Controls.Slider)(target));
#line 98 "..\..\..\ImageViewer\ImageViewer.xaml"
this.zoomSlider.MouseLeftButtonDown += new System.Windows.Input.MouseButtonEventHandler(this.zoomSlider_MouseLeftButtonDown);
#line default
#line hidden
return;
case 19:
this.lbZoom = ((System.Windows.Controls.Label)(target));
return;
case 20:
this.thumbnailCanvas = ((System.Windows.Controls.Canvas)(target));
#line 106 "..\..\..\ImageViewer\ImageViewer.xaml"
this.thumbnailCanvas.MouseLeftButtonDown += new System.Windows.Input.MouseButtonEventHandler(this.thumbnailCanvas_MouseLeftButtonDown);
#line default
#line hidden
return;
case 21:
this.thumbnailBorder = ((System.Windows.Controls.Border)(target));
return;
case 22:
this.thumbnailZoomRectThumb = ((System.Windows.Controls.Primitives.Thumb)(target));
#line 110 "..\..\..\ImageViewer\ImageViewer.xaml"
this.thumbnailZoomRectThumb.DragDelta += new System.Windows.Controls.Primitives.DragDeltaEventHandler(this.thumbnailZoomRectThumb_DragDelta);
#line default
#line hidden
return;
case 23:
this.ThumbnailImage_Brush = ((System.Windows.Media.ImageBrush)(target));
return;
}
this._contentLoaded = true;
}
