private void imageGrid_MouseMove(object sender, System.Windows.Input.MouseEventArgs e)
{
System.Windows.Point point = e.GetPosition(imageGrid);
m_mouseVLine.X1 = point.X;
m_mouseVLine.Y1 = 0;
m_mouseVLine.X2 = point.X;
m_mouseVLine.Y2 = image.ActualHeight;
m_mouseVLine.Visibility = Visibility.Visible;
m_mouseHLine.X1 = 0;
m_mouseHLine.Y1 = point.Y;
m_mouseHLine.X2 = image.ActualWidth;
m_mouseHLine.Y2 = point.Y;
m_mouseHLine.Visibility = Visibility.Visible;
if (m_currentBox != null && m_currentBox.IsValid())
{
if (m_currentLocalCS == null)
{
m_currentLocalCS = new LocalCS(m_currentBox, (float)image.ActualWidth, (float)image.ActualHeight);
}
else
{
m_currentLocalCS.Reset(m_currentBox, (float)image.ActualWidth, (float)image.ActualHeight);
}
m_mouseTxt.Text = "(" + Util.ToString(m_currentLocalCS.InverseConvertX(point.X))
+ " " + Util.ToString(m_currentLocalCS.InverseConvertY(point.Y))
+ ")";
Canvas.SetLeft(m_mouseTxt, point.X + 2);
Canvas.SetTop(m_mouseTxt, point.Y + 2);
m_mouseTxt.Visibility = Visibility.Visible;
}
else
{
m_mouseTxt.Visibility = Visibility.Hidden;
}
if (m_mouseDown)
{
if (m_pointDown[0] != point.X || m_pointDown[1] != point.Y)
{
double ox = m_pointDown[0];
double oy = m_pointDown[1];
double x = Math.Min(Math.Max(point.X, 0), image.ActualWidth);
double y = Math.Min(Math.Max(point.Y, 0), image.ActualHeight);
double w = Math.Abs(x - ox);
double h = Math.Abs(y - oy);
double prop = h / w;
double iProp = image.ActualHeight / image.ActualWidth;
if (prop < iProp)
{
h = iProp * w;
}
else if (prop > iProp)
{
w = h / iProp;
}
double l = ox;
double t = oy;
if (ox <= x)
{
if (ox + w > image.ActualWidth)
{
w = image.ActualWidth - ox;
h = iProp * w;
}
}
else
{
if (ox - w < 0)
{
w = ox;
h = iProp * w;
}
l = ox - w;
}
if (oy <= y)
{
if (oy + h > image.ActualHeight)
{
h = image.ActualHeight - oy;
w = h / iProp;
}
}
else
{
if (oy - h < 0)
{
h = oy;
w = h / iProp;
}
t = oy - h;
}
if (w > 0 && h > 0)
{
Canvas.SetLeft(m_selectionRect, l);
Canvas.SetTop(m_selectionRect, t);
m_selectionRect.Width = w;
m_selectionRect.Height = h;
m_selectionRect.Visibility = Visibility.Visible;
}
}
}
}
private void imageGrid_MouseMove(object sender, System.Windows.Input.MouseEventArgs e)
{
System.Windows.Point point = e.GetPosition(imageGrid);
m_mouseVLine.X1 = point.X;
m_mouseVLine.Y1 = 0;
m_mouseVLine.X2 = point.X;
m_mouseVLine.Y2 = image.ActualHeight;
m_mouseVLine.Visibility = Visibility.Visible;
m_mouseHLine.X1 = 0;
m_mouseHLine.Y1 = point.Y;
m_mouseHLine.X2 = image.ActualWidth;
m_mouseHLine.Y2 = point.Y;
m_mouseHLine.Visibility = Visibility.Visible;
if (m_currentBox != null && m_currentBox.IsValid())
{
// TODO: pass correct fill parameter later when point plot is implemented
bool fill = true;
if (m_currentLocalCS == null)
{
m_currentLocalCS = new LocalCS(m_currentBox, (float)image.ActualWidth, (float)image.ActualHeight, fill);
}
else
{
m_currentLocalCS.Reset(m_currentBox, (float)image.ActualWidth, (float)image.ActualHeight, fill);
}
m_mouseTxt.Text = "(" + Util.ToString(m_currentLocalCS.InverseConvertX(point.X))
+ " " + Util.ToString(m_currentLocalCS.InverseConvertY(point.Y))
+ ")";
Canvas.SetLeft(m_mouseTxt, point.X + 2);
Canvas.SetTop(m_mouseTxt, point.Y + 2);
m_mouseTxt.Visibility = Visibility.Visible;
}
else
{
m_mouseTxt.Visibility = Visibility.Hidden;
}
if (m_mouseDown)
{
if (m_pointDown[0] != point.X || m_pointDown[1] != point.Y)
{
double originx = m_pointDown[0];
double originy = m_pointDown[1];
double x = Math.Min(Math.Max(point.X, 0), image.ActualWidth);
double y = Math.Min(Math.Max(point.Y, 0), image.ActualHeight);
double width = Math.Abs(x - originx);
double height = Math.Abs(y - originy);
if (originx > x)
{
originx -= width;
}
if (originy > y)
{
originy -= height;
}
Canvas.SetLeft(m_selectionRect, originx);
m_selectionRect.Width = width;
Canvas.SetTop(m_selectionRect, originy);
m_selectionRect.Height = height;
m_selectionRect.Visibility = Visibility.Visible;
}
}
}