/// <summary>
/// Constructor</summary>
/// <param name="transformAdapter">Transform adapter</param>
/// <param name="canvasAdapter">Canvas adapter</param>
public ScrollbarAdapter(ITransformAdapter transformAdapter, ICanvasAdapter canvasAdapter)
{
m_transformAdapter = transformAdapter;
m_transformAdapter.TransformChanged += transformAdapter_TransformChanged;
m_canvasAdapter = canvasAdapter;
m_canvasAdapter.BoundsChanged += canvasAdapter_BoundsChanged;
m_canvasAdapter.WindowBoundsChanged += canvasAdapter_WindowBoundsChanged;
m_vScrollBar = new VScrollBar();
m_vScrollBar.Dock = DockStyle.Right;
m_vScrollBar.ValueChanged += vScrollBar_ValueChanged;
m_hScrollBar = new HScrollBar();
m_hScrollBar.Dock = DockStyle.Bottom;
m_hScrollBar.ValueChanged += hScrollBar_ValueChanged;
}
/// <summary>
/// Constructor</summary>
/// <param name="transformAdapter">Transform adapter</param>
/// <param name="canvasAdapter">Canvas adapter</param>
public ScrollbarAdapter(ITransformAdapter transformAdapter, ICanvasAdapter canvasAdapter)
{
m_transformAdapter = transformAdapter;
m_transformAdapter.TransformChanged += transformAdapter_TransformChanged;
m_canvasAdapter = canvasAdapter;
m_canvasAdapter.BoundsChanged += canvasAdapter_BoundsChanged;
m_canvasAdapter.WindowBoundsChanged += canvasAdapter_WindowBoundsChanged;
m_vScrollBar = new VScrollBar();
m_vScrollBar.Dock = DockStyle.Right;
m_vScrollBar.ValueChanged += vScrollBar_ValueChanged;
m_hScrollBar = new HScrollBar();
m_hScrollBar.Dock = DockStyle.Bottom;
m_hScrollBar.ValueChanged += hScrollBar_ValueChanged;
}
private void SetCanvasBounds()
{
// update the control CanvasAdapter's bounds
if (m_control != null &&
m_control.Visible)
{
Rectangle bounds = GetBounds();
ITransformAdapter transformAdapter = m_control.As <ITransformAdapter>();
bounds = GdiUtil.InverseTransform(transformAdapter.Transform, bounds);
// make canvas twice as large as it needs to be to give the user some room,
// or at least as large as the control's client area.
Rectangle clientRect = m_control.ClientRectangle;
bounds.Width = Math.Max(bounds.Width * 2, clientRect.Width);
bounds.Height = Math.Max(bounds.Height * 2, clientRect.Height);
ICanvasAdapter canvasAdapter = m_control.As <ICanvasAdapter>();
canvasAdapter.Bounds = new Rectangle(0, 0, bounds.Right, bounds.Bottom);
}
}
