Nikita Tsukanov
9 years ago
31 changed files with 377 additions and 295 deletions
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using System; |
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using Avalonia.Controls; |
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namespace Avalonia.Platform |
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{ |
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public interface IWindowBaseImpl : ITopLevelImpl |
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{ |
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/// <summary>
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/// Shows the toplevel.
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/// </summary>
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void Show(); |
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/// <summary>
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/// Hides the window.
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/// </summary>
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void Hide(); |
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/// <summary>
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/// Starts moving a window with left button being held. Should be called from left mouse button press event handler.
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/// </summary>
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void BeginMoveDrag(); |
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/// <summary>
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/// Starts resizing a window. This function is used if an application has window resizing controls.
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/// Should be called from left mouse button press event handler
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/// </summary>
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void BeginResizeDrag(WindowEdge edge); |
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/// <summary>
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/// Gets position of the window relatively to the screen
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/// </summary>
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Point Position { get; set; } |
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/// <summary>
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/// Gets or sets a method called when the window's position changes.
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/// </summary>
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Action<Point> PositionChanged { get; set; } |
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/// <summary>
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/// Activates the window.
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/// </summary>
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void Activate(); |
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/// <summary>
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/// Gets or sets a method called when the window is deactivated (loses focus).
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/// </summary>
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Action Deactivated { get; set; } |
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/// <summary>
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/// Gets or sets a method called when the window is activated (receives focus).
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/// </summary>
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Action Activated { get; set; } |
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/// <summary>
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/// Gets the platform window handle.
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/// </summary>
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IPlatformHandle Handle { get; } |
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/// <summary>
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/// Gets the maximum size of a window on the system.
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/// </summary>
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Size MaxClientSize { get; } |
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/// <summary>
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/// Gets the client size of the toplevel.
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/// </summary>
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void Resize(Size size); |
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} |
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} |
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@ -0,0 +1,191 @@ |
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using System; |
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using System.Collections.Generic; |
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using System.Linq; |
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using System.Reactive.Disposables; |
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using System.Reactive.Linq; |
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using System.Text; |
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using System.Threading.Tasks; |
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using Avalonia.Controls.Primitives; |
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using Avalonia.Input; |
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using Avalonia.Layout; |
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using Avalonia.Platform; |
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namespace Avalonia.Controls |
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{ |
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/// <summary>
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/// Base class for top-level windows.
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/// </summary>
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/// <remarks>
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/// This class acts as a base for top level windows such as <see cref="Window"/> and
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/// <see cref="PopupRoot"/>. It handles scheduling layout, styling and rendering as well as
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/// tracking the window <see cref="ClientSize"/> and <see cref="IsActive"/> state.
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/// </remarks>
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public class WindowBase : TopLevel |
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{ |
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/// <summary>
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/// Defines the <see cref="IsActive"/> property.
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/// </summary>
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public static readonly DirectProperty<WindowBase, bool> IsActiveProperty = |
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AvaloniaProperty.RegisterDirect<WindowBase, bool>(nameof(IsActive), o => o.IsActive); |
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private bool _isActive; |
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public WindowBase(IWindowBaseImpl impl) : this(impl, AvaloniaLocator.Current) |
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{ |
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} |
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public WindowBase(IWindowBaseImpl impl, IAvaloniaDependencyResolver dependencyResolver) : base(impl, dependencyResolver) |
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{ |
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PlatformImpl.Activated = HandleActivated; |
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PlatformImpl.Deactivated = HandleDeactivated; |
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PlatformImpl.PositionChanged = HandlePositionChanged; |
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this.GetObservable(ClientSizeProperty).Skip(1).Subscribe(x => PlatformImpl.Resize(x)); |
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} |
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/// <summary>
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/// Fired when the window is activated.
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/// </summary>
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public event EventHandler Activated; |
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/// <summary>
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/// Fired when the window is deactivated.
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/// </summary>
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public event EventHandler Deactivated; |
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/// <summary>
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/// Fired when the window position is changed.
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/// </summary>
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public event EventHandler<PointEventArgs> PositionChanged; |
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public new IWindowBaseImpl PlatformImpl => (IWindowBaseImpl) base.PlatformImpl; |
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/// <summary>
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/// Gets a value that indicates whether the window is active.
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/// </summary>
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public bool IsActive |
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{ |
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get { return _isActive; } |
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private set { SetAndRaise(IsActiveProperty, ref _isActive, value); } |
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} |
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/// <summary>
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/// Gets or sets the window position in screen coordinates.
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/// </summary>
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public Point Position |
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{ |
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get { return PlatformImpl.Position; } |
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set { PlatformImpl.Position = value; } |
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} |
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/// <summary>
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/// Whether an auto-size operation is in progress.
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/// </summary>
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protected bool AutoSizing |
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{ |
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get; |
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private set; |
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} |
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/// <summary>
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/// Activates the window.
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/// </summary>
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public void Activate() |
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{ |
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PlatformImpl.Activate(); |
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} |
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/// <summary>
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/// Begins an auto-resize operation.
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/// </summary>
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/// <returns>A disposable used to finish the operation.</returns>
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/// <remarks>
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/// When an auto-resize operation is in progress any resize events received will not be
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/// cause the new size to be written to the <see cref="Layoutable.Width"/> and
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/// <see cref="Layoutable.Height"/> properties.
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/// </remarks>
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protected IDisposable BeginAutoSizing() |
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{ |
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AutoSizing = true; |
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return Disposable.Create(() => AutoSizing = false); |
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} |
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/// <summary>
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/// Carries out the arrange pass of the window.
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/// </summary>
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/// <param name="finalSize">The final window size.</param>
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/// <returns>The <paramref name="finalSize"/> parameter unchanged.</returns>
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protected override Size ArrangeOverride(Size finalSize) |
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{ |
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using (BeginAutoSizing()) |
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{ |
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PlatformImpl.Resize(finalSize); |
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} |
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return base.ArrangeOverride(PlatformImpl.ClientSize); |
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} |
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/// <summary>
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/// Handles a resize notification from <see cref="ITopLevelImpl.Resized"/>.
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/// </summary>
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/// <param name="clientSize">The new client size.</param>
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protected override void HandleResized(Size clientSize) |
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{ |
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if (!AutoSizing) |
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{ |
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Width = clientSize.Width; |
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Height = clientSize.Height; |
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} |
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base.HandleResized(clientSize); |
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} |
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/// <summary>
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/// Handles a window position change notification from
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/// <see cref="ITopLevelImpl.PositionChanged"/>.
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/// </summary>
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/// <param name="pos">The window position.</param>
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private void HandlePositionChanged(Point pos) |
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{ |
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PositionChanged?.Invoke(this, new PointEventArgs(pos)); |
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} |
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/// <summary>
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/// Handles an activated notification from <see cref="ITopLevelImpl.Activated"/>.
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/// </summary>
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private void HandleActivated() |
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{ |
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Activated?.Invoke(this, EventArgs.Empty); |
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var scope = this as IFocusScope; |
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if (scope != null) |
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{ |
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FocusManager.Instance.SetFocusScope(scope); |
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} |
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IsActive = true; |
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} |
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/// <summary>
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/// Handles a deactivated notification from <see cref="ITopLevelImpl.Deactivated"/>.
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/// </summary>
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private void HandleDeactivated() |
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{ |
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IsActive = false; |
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Deactivated?.Invoke(this, EventArgs.Empty); |
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} |
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/// <summary>
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/// Starts moving a window with left button being held. Should be called from left mouse button press event handler
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/// </summary>
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public void BeginMoveDrag() => PlatformImpl.BeginMoveDrag(); |
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/// <summary>
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/// Starts resizing a window. This function is used if an application has window resizing controls.
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/// Should be called from left mouse button press event handler
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/// </summary>
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public void BeginResizeDrag(WindowEdge edge) => PlatformImpl.BeginResizeDrag(edge); |
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} |
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} |
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