private PlotDeviceProperties GetPixelSizeAndResolution(Size wpfSize)
{
var source = PresentationSource.FromVisual(Content as Visual);
if (source != null)
{
var unadjustedPixelSize = WpfUnitsConversion.ToPixels(source, wpfSize);
// If the window gets below a certain minimum size, plot to the minimum size
_lastPixelWidth = Math.Max((int)unadjustedPixelSize.Width, MinPixelWidth);
_lastPixelHeight = Math.Max((int)unadjustedPixelSize.Height, MinPixelHeight);
_lastResolution = WpfUnitsConversion.GetResolution(source);
}
// The PresentationSource will be null in the specific scenario where:
// - Host is creating a graphics device, requesting properties of the plot window
// - This plot window is docked and has never been visible
//
// In that case, it is okay to re-use the last properties that we've
// seen for this window. The window will have received the appropriate
// SizeChanged events prior to this, and those were able to get a
// non-null PresentationSource.
//
// I do not understand why, this might be some optimization that
// VS/WPF is doing for hidden document windows.
//
// The fallback to the Minimum size when last properties are null
// is only there as a precaution, I have not seen it happen in my
// testing. If they ever happen, you'll see a low resolution plot
// when you activate the plot window.
return(new PlotDeviceProperties(_lastPixelWidth ?? MinPixelWidth, _lastPixelHeight ?? MinPixelHeight, _lastResolution ?? DefaultResolution));
}
private void Image_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
var image = (FrameworkElement)sender;
var pos = e.GetPosition(image);
var pixelSize = WpfUnitsConversion.ToPixels(PresentationSource.FromVisual(image as Visual), pos);
Model?.ClickPlot((int)pixelSize.X, (int)pixelSize.Y);
}
private void UserControl_SizeChanged(object sender, SizeChangedEventArgs e)
{
var unadjustedPixelSize = WpfUnitsConversion.ToPixels(Content as Visual, e.NewSize);
// If the window gets below a certain minimum size, plot to the minimum size
int pixelWidth = Math.Max((int)unadjustedPixelSize.Width, MinPixelWidth);
int pixelHeight = Math.Max((int)unadjustedPixelSize.Height, MinPixelHeight);
int resolution = WpfUnitsConversion.GetResolution(Content as Visual);
Model?.ResizePlotAfterDelay(pixelWidth, pixelHeight, resolution);
}
private Size GetPixelSize(int width, int height)
{
var source = PresentationSource.FromVisual(_plotVisualComponent.Control as Visual);
return(WpfUnitsConversion.ToPixels(source, new Size(width, height)));
}
