private void InitClass()
{
// Initialize the _viewer and add handlers to the DragEnter/DragDrop and KeyDown events
_viewer = new ImageViewer();
_viewer.BorderStyle = BorderStyle.None;
_viewer.DragEnter += new DragEventHandler(_viewer_DragEnter);
_viewer.DragDrop += new DragEventHandler(_viewer_DragDrop);
_viewer.KeyDown += new KeyEventHandler(_viewer_KeyDown);
_viewer.MouseDown += new MouseEventHandler(_viewer_MouseDown);
_viewer.MouseMove += new MouseEventHandler(_viewer_MouseMove);
_viewer.MouseUp += new MouseEventHandler(_viewer_MouseUp);
_toolTip = new ToolTip();
_flags = RasterPaletteWindowLevelFlags.Logarithmic |
RasterPaletteWindowLevelFlags.DicomStyle | RasterPaletteWindowLevelFlags.Outside;
Controls.Add(_viewer);
_viewer.BringToFront();
_viewer.AllowDrop = true;
// Set a default RasterPaintProperties and Paint engine to use when displaying images on the viewer
RasterPaintProperties Prop = new RasterPaintProperties();
Prop = RasterPaintProperties.Default;
Prop.PaintDisplayMode = RasterPaintDisplayModeFlags.FavorBlack;
Prop.PaintEngine = RasterPaintEngine.GdiPlus;
_viewer.PaintProperties = Prop;
}
public void UpdateDataAfterCommand()
{
if (_viewer.Image.GrayscaleMode != RasterGrayscaleMode.None)
{
switch (_viewer.Image.BitsPerPixel)
{
case 8:
_currentPalette = _viewer.Image.GetPalette();
_LUTSize = 256;
_minValue = 0;
_maxValue = 255;
_isWLImage = true;
break;
case 12:
case 16:
_viewer.Image.UseLookupTable = true;
_currentPalette = _viewer.Image.GetLookupTable();
_highBit = _viewer.Image.HighBit;
if (_highBit == -1)
{
_highBit = _viewer.Image.BitsPerPixel - 1;
}
if (_currentPalette == null)
{
_LUTSize = (int)Math.Pow(2, _highBit + 1);
_maxValue = (_viewer.Image.Signed) ? _LUTSize / 2 - 1 : _LUTSize - 1;
_minValue = (_viewer.Image.Signed) ? -_LUTSize / 2 : 0;
createPalette();
}
else
{
_LUTSize = _currentPalette.Length;
MinMaxValuesCommand minMaxValueCmd = new MinMaxValuesCommand();
minMaxValueCmd.Run(_viewer.Image);
_maxValue = minMaxValueCmd.MaximumValue;
_minValue = minMaxValueCmd.MinimumValue;
}
_isWLImage = true;
break;
}
_scale = ((_maxValue - _minValue) / 1000 > 0) ? (_maxValue - _minValue) / 1000 : 1;
_maxWidth = (int)Math.Pow(2, _viewer.Image.BitsPerPixel) - 1;
_minWidth = 1;
_maxLevel = (int)Math.Pow(2, _viewer.Image.BitsPerPixel) - 1;
_minLevel = (int)Math.Pow(2, _viewer.Image.BitsPerPixel) * -1 + 1;
if (_viewer.Image.Signed)
{
_flags |= RasterPaletteWindowLevelFlags.Signed;
getWindowLevelForSigned(_currentPalette);
}
else
{
getWindowLevelForUnSigned(_currentPalette);
}
}
}
private void InitClass()
{
_viewer = new ImageViewer();
_viewer.BorderStyle = BorderStyle.None;
_viewer.DragEnter += new DragEventHandler(_viewer_DragEnter);
_viewer.DragDrop += new DragEventHandler(_viewer_DragDrop);
_viewer.MouseDown += new MouseEventHandler(_viewer_MouseDown);
_viewer.MouseMove += new MouseEventHandler(_viewer_MouseMove);
_viewer.MouseUp += new MouseEventHandler(_viewer_MouseUp);
_toolTip = new ToolTip();
_flags = RasterPaletteWindowLevelFlags.Logarithmic |
RasterPaletteWindowLevelFlags.DicomStyle | RasterPaletteWindowLevelFlags.Outside;
Controls.Add(_viewer);
_viewer.BringToFront();
_viewer.AllowDrop = true;
_undoList = new UndoRedo();
}
public static void WindowLevel(RasterImage image, params string[] parameters)
{
if (parameters.Length >= 3)
{
int width, center;
bool inverted;
if (!int.TryParse(parameters[0], out width))
{
return;
}
if (!int.TryParse(parameters[1], out center))
{
return;
}
if (!bool.TryParse(parameters[2], out inverted))
{
return;
}
int nLowBit = image.LowBit;
int nHighBit = image.HighBit;
if (nHighBit == -1)
{
nHighBit = image.BitsPerPixel - 1;
}
int uLUTLen = 1 << (nHighBit - image.LowBit + 1);
int nFrom = center - (width >> 1);
int nTo = center + ((width + 1) >> 1);
int nFullMinValue;
int nFullMaxValue;
int nLookupTableLength = 0;
if (image.GetLookupTable() != null)
{
nLookupTableLength = image.GetLookupTable().Length;
}
if (image.BitsPerPixel == 8)
{
nFullMinValue = 0;
nFullMaxValue = 255;
}
else
{
if (nLookupTableLength == 0)
{
nFullMinValue = !image.Signed ? 0 : -(0xffff + 1) / 2;
nFullMaxValue = !image.Signed ? 0xffff - 1 : (0xffff + 1) / 2 - 1;
}
else
{
nFullMinValue = !image.Signed ? 0 : -(nLookupTableLength + 1) / 2;
nFullMaxValue = !image.Signed ? nLookupTableLength - 1 : (nLookupTableLength + 1) / 2 - 1;
}
}
RasterColor[] lookUpTable = new RasterColor[uLUTLen];
RasterPaletteWindowLevelFlags flags = ((image.Signed) ? RasterPaletteWindowLevelFlags.Signed : RasterPaletteWindowLevelFlags.None) | RasterPaletteWindowLevelFlags.Outside | RasterPaletteWindowLevelFlags.Linear | RasterPaletteWindowLevelFlags.DicomStyle;
RasterColor startColor = new RasterColor(0, 0, 0);
RasterColor endColor = new RasterColor(255, 255, 255);
RasterPalette.WindowLevelFillLookupTable(lookUpTable, (!inverted) ? startColor : endColor, (!inverted) ? endColor : startColor, nFrom, nTo, nLowBit, nHighBit, nFullMinValue, nFullMaxValue, 1, flags);
if (image.BitsPerPixel == 8)
{
image.SetPalette(lookUpTable, 0, 256);
}
else
{
image.WindowLevel(nLowBit, nHighBit, lookUpTable, RasterWindowLevelMode.PaintAndProcessing);
}
}
}
public void Initialize(ImageInformation info, RasterPaintProperties paintProperties, bool snap)
{
_viewer.BeginUpdate();
UpdatePaintProperties(paintProperties);
_viewer.Image = info.Image;
if (_viewer.Image != null)
{
_viewer.Image.Changed += new EventHandler <RasterImageChangedEventArgs>(Image_Changed);
}
_name = info.Name;
if (snap)
{
Snap();
}
UpdateCaption();
_viewer.EndUpdate();
_isWLImage = false;
_isMagGlass = false;
if (_viewer.Image.GrayscaleMode != RasterGrayscaleMode.None)
{
switch (_viewer.Image.BitsPerPixel)
{
case 8:
_currentPalette = _viewer.Image.GetPalette();
_LUTSize = 256;
_minValue = 0;
_maxValue = 255;
_isWLImage = true;
break;
case 12:
case 16:
_viewer.Image.UseLookupTable = true;
_currentPalette = _viewer.Image.GetLookupTable();
_highBit = _viewer.Image.HighBit;
if (_highBit == -1)
{
_highBit = _viewer.Image.BitsPerPixel - 1;
}
if (_currentPalette == null)
{
_LUTSize = (int)Math.Pow(2, _highBit + 1);
_maxValue = (_viewer.Image.Signed) ? _LUTSize / 2 - 1 : _LUTSize - 1;
_minValue = (_viewer.Image.Signed) ? -_LUTSize / 2 : 0;
}
else
{
_LUTSize = _currentPalette.Length;
MinMaxValuesCommand minMaxValueCmd = new MinMaxValuesCommand();
minMaxValueCmd.Run(_viewer.Image);
_maxValue = minMaxValueCmd.MaximumValue;
_minValue = minMaxValueCmd.MinimumValue;
}
_isWLImage = true;
break;
}
_scale = ((_maxValue - _minValue) / 1000 > 0) ? (_maxValue - _minValue) / 1000 : 1;
_maxWidth = (int)Math.Pow(2, _viewer.Image.BitsPerPixel) - 1;
_minWidth = 1;
_maxLevel = (int)Math.Pow(2, _viewer.Image.BitsPerPixel) - 1;
_minLevel = (int)Math.Pow(2, _viewer.Image.BitsPerPixel) * -1 + 1;
_windowLevelCenter = (_maxValue + _minValue) / 2;
_windowLevelWidth = _maxValue - _minValue;
if (_viewer.Image.Signed)
{
_flags |= RasterPaletteWindowLevelFlags.Signed;
}
ChangeThePalette();
}
}
