/// <summary>
/// Attach project editor to container control.
/// </summary>
public void AttachEditor()
{
_projectEditor = this.DataContext as ProjectEditor;
_containerControl = this.Find<ContainerViewControl>("containerControl");
_zoomBorder = this.Find<ZoomBorder>("zoomBorder");
if (_projectEditor != null && _containerControl != null && _zoomBorder != null)
{
_projectEditor.Invalidate = () => _containerControl.InvalidateVisual();
_projectEditor.ResetZoom = () => _zoomBorder.Reset();
_projectEditor.AutoFitZoom = () => _zoomBorder.AutoFit();
_projectEditor.LoadLayout = () => { };
_projectEditor.SaveLayout = () => { };
_projectEditor.ResetLayout = () => { };
_zoomBorder.InvalidatedChild = InvalidateChild;
_inputProcessor = new InputProcessor(
new AvaloniaInputSource(
_zoomBorder,
_containerControl,
_zoomBorder.FixInvalidPointPosition),
_projectEditor);
}
}
public MainWindow()
{
this.InitializeComponent();
this.AttachDevTools();
zoomBorder = this.Find<ZoomBorder>("zoomBorder");
zoomBorder.KeyDown += ZoomBorder_KeyDown;
}
/// <summary>
/// Calculate scrollable properties.
/// </summary>
/// <param name="source">The source bounds.</param>
/// <param name="matrix">The transform matrix.</param>
/// <param name="extent">The extent of the scrollable content.</param>
/// <param name="viewport">The size of the viewport.</param>
/// <param name="offset">The current scroll offset.</param>
public static void CalculateScrollable(Rect source, Matrix matrix, out Size extent, out Size viewport, out Vector offset)
{
var bounds = new Rect(0, 0, source.Width, source.Height);
viewport = bounds.Size;
var transformed = bounds.TransformToAABB(matrix);
ZoomBorder.Log($"[CalculateScrollable] source: {source}, bounds: {bounds}, transformed: {transformed}");
var width = transformed.Size.Width;
var height = transformed.Size.Height;
if (width < viewport.Width)
{
width = viewport.Width;
if (transformed.Position.X < 0.0)
{
width += Abs(transformed.Position.X);
}
else
{
var widthTranslated = transformed.Size.Width + transformed.Position.X;
if (widthTranslated > width)
{
width += widthTranslated - width;
}
}
}
else if (!(width > viewport.Width))
{
width += Abs(transformed.Position.X);
}
if (height < viewport.Height)
{
height = viewport.Height;
if (transformed.Position.Y < 0.0)
{
height += Abs(transformed.Position.Y);
}
else
{
var heightTranslated = transformed.Size.Height + transformed.Position.Y;
if (heightTranslated > height)
{
height += heightTranslated - height;
}
}
}
else if (!(height > viewport.Height))
{
height += Abs(transformed.Position.Y);
}
extent = new Size(width, height);
var ox = transformed.Position.X;
var oy = transformed.Position.Y;
var offsetX = ox < 0 ? Abs(ox) : 0;
var offsetY = oy < 0 ? Abs(oy) : 0;
offset = new Vector(offsetX, offsetY);
ZoomBorder.Log($"[CalculateScrollable] Extent: {extent} | Offset: {offset} | Viewport: {viewport}");
}
/// <summary>
/// Detach project editor from container control.
/// </summary>
public void DetachEditor()
{
if (_projectEditor != null && _containerControl != null && _zoomBorder != null)
{
_projectEditor.Invalidate = null;
_projectEditor.ResetZoom = null;
_projectEditor.AutoFitZoom = null;
_projectEditor.LoadLayout = null;
_projectEditor.SaveLayout = null;
_projectEditor.ResetLayout = null;
_zoomBorder.InvalidatedChild = null;
_inputProcessor.Dispose();
}
_projectEditor = null;
_containerControl = null;
_zoomBorder = null;
}