private void cutCanavas(object sender, RoutedEventArgs e)
{
InkCanvas.CutSelection();
}
// since inheritance of Window does not work, the eventhandler have to be static methods and added after generation of the Window object
// keyboard is pressed
private static void InkCanvas_KeyDown(object sender, KeyEventArgs e)
{
Key Taste = e.Key;
// the sender object is the object that generated the event
InkCanvas objInkCanvas = (InkCanvas)sender;
if (Keyboard.IsKeyDown(Key.RightCtrl) || Keyboard.IsKeyDown(Key.LeftCtrl))
// the following line only works with .Net 4.x
// if (Keyboard.Modifiers.HasFlag(ModifierKeys.Control))
{ // if Ctrl is pressed
switch (Taste)
{
case Key.C: // copy marked area
objInkCanvas.CopySelection();
break;
case Key.O: // open ink drawing
Microsoft.Win32.OpenFileDialog objOpenDialog = new Microsoft.Win32.OpenFileDialog();
objOpenDialog.Filter = "isf files (*.isf)|*.isf";
if ((bool)objOpenDialog.ShowDialog())
{
FileStream objFileStream = new FileStream(objOpenDialog.FileName, FileMode.Open);
objInkCanvas.Strokes.Add(new StrokeCollection(objFileStream));
objFileStream.Dispose();
}
break;
case Key.P: // save grafic as PNG file
Microsoft.Win32.SaveFileDialog objPNGDialog = new Microsoft.Win32.SaveFileDialog();
objPNGDialog.Filter = "png files (*.png)|*.png";
if ((bool)objPNGDialog.ShowDialog())
{
FileStream objFileStream = new FileStream(objPNGDialog.FileName, FileMode.Create);
System.Windows.Media.Imaging.RenderTargetBitmap objRenderBitmap = new System.Windows.Media.Imaging.RenderTargetBitmap((int)objInkCanvas.ActualWidth, (int)objInkCanvas.ActualHeight, 96.0, 96.0, System.Windows.Media.PixelFormats.Default);
objRenderBitmap.Render(objInkCanvas);
System.Windows.Media.Imaging.BitmapFrame objBitmapFrame = System.Windows.Media.Imaging.BitmapFrame.Create(objRenderBitmap);
System.Windows.Media.Imaging.PngBitmapEncoder objImgEncoder = new System.Windows.Media.Imaging.PngBitmapEncoder();
// alternative for JPG: System.Windows.Media.Imaging.JpegBitmapEncoder objImgEncoder = new System.Windows.Media.Imaging.JpegBitmapEncoder();
objImgEncoder.Frames.Add(objBitmapFrame);
objImgEncoder.Save(objFileStream);
objFileStream.Dispose();
}
break;
case Key.S: // save ink drawing
Microsoft.Win32.SaveFileDialog objSaveDialog = new Microsoft.Win32.SaveFileDialog();
objSaveDialog.Filter = "isf files (*.isf)|*.isf";
if ((bool)objSaveDialog.ShowDialog())
{
FileStream objFileStream = new FileStream(objSaveDialog.FileName, FileMode.Create);
objInkCanvas.Strokes.Save(objFileStream);
objFileStream.Dispose();
}
break;
case Key.V: // paste marked area
objInkCanvas.Paste();
break;
case Key.X: // cut marked area
objInkCanvas.CutSelection();
break;
}
}
else
{ // no Ctrl key is pressed
if (Keyboard.Modifiers == ModifierKeys.None)
{ // only when no other modifier keys are pressed
switch (Taste)
{
case Key.B: // next background color
Brush ActualBackColor = (Brush)BrushQueue.Dequeue();
BrushQueue.Enqueue(ActualBackColor);
objInkCanvas.Background = ActualBackColor;
break;
case Key.C: // clear window content
objInkCanvas.Strokes.Clear();
break;
case Key.D: // switch to draw mode
if (objInkCanvas.DefaultDrawingAttributes.IsHighlighter)
{
StoreHighLightSizeWidth = objInkCanvas.DefaultDrawingAttributes.Width;
StoreHighLightSizeHeight = objInkCanvas.DefaultDrawingAttributes.Height;
StoreHighLightColor = objInkCanvas.DefaultDrawingAttributes.Color;
objInkCanvas.DefaultDrawingAttributes.StylusTip = StylusTip.Ellipse;
objInkCanvas.DefaultDrawingAttributes.IsHighlighter = false;
objInkCanvas.DefaultDrawingAttributes.Color = StoreInkColor;
objInkCanvas.DefaultDrawingAttributes.Height = StoreInkSizeHeight;
objInkCanvas.DefaultDrawingAttributes.Width = StoreInkSizeWidth;
}
objInkCanvas.EditingMode = InkCanvasEditingMode.Ink;
break;
case Key.E: // // switch to erase mode (and toggle it)
switch (objInkCanvas.EditingMode)
{
case InkCanvasEditingMode.EraseByStroke:
objInkCanvas.EditingMode = InkCanvasEditingMode.EraseByPoint;
break;
case InkCanvasEditingMode.EraseByPoint:
objInkCanvas.EditingMode = InkCanvasEditingMode.EraseByStroke;
break;
case InkCanvasEditingMode.Ink:
objInkCanvas.EditingMode = InkCanvasEditingMode.EraseByPoint;
break;
}
break;
case Key.H: // switch to highlight mode
if (!objInkCanvas.DefaultDrawingAttributes.IsHighlighter)
{
StoreInkSizeWidth = objInkCanvas.DefaultDrawingAttributes.Width;
StoreInkSizeHeight = objInkCanvas.DefaultDrawingAttributes.Height;
StoreInkColor = objInkCanvas.DefaultDrawingAttributes.Color;
objInkCanvas.DefaultDrawingAttributes.Color = StoreHighLightColor;
}
objInkCanvas.EditingMode = InkCanvasEditingMode.Ink;
objInkCanvas.DefaultDrawingAttributes.IsHighlighter = true;
objInkCanvas.DefaultDrawingAttributes.StylusTip = StylusTip.Rectangle;
if (StoreHighLightSizeWidth > 0.0)
{
objInkCanvas.DefaultDrawingAttributes.Height = StoreHighLightSizeHeight;
objInkCanvas.DefaultDrawingAttributes.Width = StoreHighLightSizeWidth;
}
break;
case Key.N: // next foreground color
Color ActualFrontColor = (Color)ColorQueue.Dequeue();
ColorQueue.Enqueue(ActualFrontColor);
objInkCanvas.DefaultDrawingAttributes.Color = ActualFrontColor;
break;
case Key.Q: // close window
// event is handled now
e.Handled = true;
// parent object is Window
((Window)(objInkCanvas).Parent).Close();
break;
case Key.S: // start marking
objInkCanvas.Select(new System.Windows.Ink.StrokeCollection());
break;
case Key.OemMinus: // shrink brush
switch (objInkCanvas.EditingMode)
{
case InkCanvasEditingMode.EraseByPoint:
if (objInkCanvas.EraserShape.Width > 3.0)
{
objInkCanvas.EraserShape = new RectangleStylusShape(objInkCanvas.EraserShape.Width - 2.0, objInkCanvas.EraserShape.Height - 2.0);
// size change needs refresh to display
objInkCanvas.EditingMode = InkCanvasEditingMode.None;
objInkCanvas.EditingMode = InkCanvasEditingMode.EraseByPoint;
}
break;
case InkCanvasEditingMode.Ink:
if (objInkCanvas.DefaultDrawingAttributes.Height > 3.0)
{
objInkCanvas.DefaultDrawingAttributes.Height = objInkCanvas.DefaultDrawingAttributes.Height - 2.0;
objInkCanvas.DefaultDrawingAttributes.Width = objInkCanvas.DefaultDrawingAttributes.Width - 2.0;
}
break;
}
break;
case Key.OemPlus: // enlarge brush
switch (objInkCanvas.EditingMode)
{
case InkCanvasEditingMode.EraseByPoint:
if (objInkCanvas.EraserShape.Width < 50.0)
{
objInkCanvas.EraserShape = new RectangleStylusShape(objInkCanvas.EraserShape.Width + 2.0, objInkCanvas.EraserShape.Height + 2.0);
// size change needs refresh to display
objInkCanvas.EditingMode = InkCanvasEditingMode.None;
objInkCanvas.EditingMode = InkCanvasEditingMode.EraseByPoint;
}
break;
case InkCanvasEditingMode.Ink:
if (objInkCanvas.DefaultDrawingAttributes.Height < 50.0)
{
objInkCanvas.DefaultDrawingAttributes.Height = objInkCanvas.DefaultDrawingAttributes.Height + 2.0;
objInkCanvas.DefaultDrawingAttributes.Width = objInkCanvas.DefaultDrawingAttributes.Width + 2.0;
}
break;
}
break;
}
}
}
}
internal void Cut()
{
_currentInkCanvas.CutSelection();
}
