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https://github.com/gui-cs/Terminal.Gui.git
synced 2025-12-26 15:57:56 +01:00
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@@ -1,7 +1,5 @@
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#nullable enable
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using System.Drawing;
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namespace Terminal.Gui;
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/// <summary>The Margin for a <see cref="View"/>.</summary>
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@@ -28,93 +26,43 @@ public class Margin : Adornment
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CanFocus = false;
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}
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private void Margin_LayoutStarted (object? sender, LayoutEventArgs e)
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{
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// Adjust the shadow such that it is drawn aligned with the Border
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if (ShadowStyle != Gui.ShadowStyle.None && _rightShadow is { } && _bottomShadow is { })
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{
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_rightShadow.Y = Parent.Border.Thickness.Top > 0 ? Parent.Border.Thickness.Top - (Parent.Border.Thickness.Top > 2 && Parent.Border.ShowTitle ? 1 : 0) : 1;
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_bottomShadow.X = Parent.Border.Thickness.Left > 0 ? Parent.Border.Thickness.Left : 1;
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}
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}
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private bool _pressed;
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private void Margin_Highlight (object? sender, CancelEventArgs<HighlightStyle> e)
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private ShadowView? _bottomShadow;
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private ShadowView? _rightShadow;
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/// <inheritdoc/>
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public override void BeginInit ()
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{
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if (ShadowStyle != Gui.ShadowStyle.None)
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base.BeginInit ();
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if (Parent is null)
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{
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if (_pressed && e.NewValue == HighlightStyle.None)
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{
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Thickness = new (Thickness.Left - 1, Thickness.Top, Thickness.Right + 1, Thickness.Bottom);
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if (_rightShadow is { })
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{
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_rightShadow.Visible = true;
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}
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if (_bottomShadow is { })
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{
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_bottomShadow.Visible = true;
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}
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_pressed = false;
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return;
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}
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if (!_pressed && (e.NewValue.HasFlag (HighlightStyle.Pressed) /*|| e.HighlightStyle.HasFlag (HighlightStyle.PressedOutside)*/))
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{
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Thickness = new (Thickness.Left + 1, Thickness.Top, Thickness.Right - 1, Thickness.Bottom);
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_pressed = true;
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if (_rightShadow is { })
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{
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_rightShadow.Visible = false;
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}
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if (_bottomShadow is { })
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{
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_bottomShadow.Visible = false;
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}
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}
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return;
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}
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}
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ShadowStyle = base.ShadowStyle;
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/// <inheritdoc />
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public override void OnDrawContent (Rectangle viewport)
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{
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Rectangle screen = ViewportToScreen (viewport);
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Attribute normalAttr = GetNormalColor ();
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Driver?.SetAttribute (normalAttr);
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// This just draws/clears the thickness, not the insides.
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if (ShadowStyle != ShadowStyle.None)
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{
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screen = Rectangle.Inflate (screen, -1, -1);
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}
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Thickness.Draw (screen, ToString ());
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if (Subviews.Count > 0)
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{
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// Draw subviews
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// TODO: Implement OnDrawSubviews (cancelable);
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if (Subviews is { } && SubViewNeedsDisplay)
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{
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IEnumerable<View> subviewsNeedingDraw = Subviews.Where (
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view => view.Visible
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&& (view.NeedsDisplay || view.SubViewNeedsDisplay || view.LayoutNeeded)
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);
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foreach (View view in subviewsNeedingDraw)
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{
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if (view.LayoutNeeded)
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{
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view.LayoutSubviews ();
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}
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view.Draw ();
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}
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}
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}
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Add (
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_rightShadow = new()
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{
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X = Pos.AnchorEnd (1),
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Y = 0,
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Width = 1,
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Height = Dim.Fill (),
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ShadowStyle = ShadowStyle,
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Orientation = Orientation.Vertical
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},
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_bottomShadow = new()
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{
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X = 0,
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Y = Pos.AnchorEnd (1),
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Width = Dim.Fill (),
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Height = 1,
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ShadowStyle = ShadowStyle,
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Orientation = Orientation.Horizontal
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}
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);
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}
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/// <summary>
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@@ -139,18 +87,48 @@ public class Margin : Adornment
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}
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}
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/// <inheritdoc />
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public override ShadowStyle ShadowStyle
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/// <inheritdoc/>
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public override void OnDrawContent (Rectangle viewport)
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{
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get => base.ShadowStyle;
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set
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Rectangle screen = ViewportToScreen (viewport);
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Attribute normalAttr = GetNormalColor ();
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Driver?.SetAttribute (normalAttr);
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// This just draws/clears the thickness, not the insides.
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if (ShadowStyle != ShadowStyle.None)
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{
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base.ShadowStyle = SetShadow (value);
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screen = Rectangle.Inflate (screen, -1, -1);
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}
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Thickness.Draw (screen, ToString ());
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if (Subviews.Count > 0)
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{
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// Draw subviews
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// TODO: Implement OnDrawSubviews (cancelable);
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if (Subviews is { } && SubViewNeedsDisplay)
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{
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IEnumerable<View> subviewsNeedingDraw = Subviews.Where (
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view => view.Visible
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&& (view.NeedsDisplay || view.SubViewNeedsDisplay || view.LayoutNeeded)
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);
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foreach (View view in subviewsNeedingDraw)
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{
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if (view.LayoutNeeded)
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{
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view.LayoutSubviews ();
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}
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view.Draw ();
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}
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}
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}
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}
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/// <summary>
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/// Sets whether the Margin includes a shadow effect. The shadow is drawn on the right and bottom sides of the
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/// Sets whether the Margin includes a shadow effect. The shadow is drawn on the right and bottom sides of the
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/// Margin.
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/// </summary>
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public ShadowStyle SetShadow (ShadowStyle style)
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@@ -181,42 +159,73 @@ public class Margin : Adornment
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{
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_bottomShadow.ShadowStyle = style;
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}
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return style;
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}
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private ShadowView? _bottomShadow;
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private ShadowView? _rightShadow;
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/// <inheritdoc/>
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public override void BeginInit ()
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public override ShadowStyle ShadowStyle
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{
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base.BeginInit ();
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if (Parent is null)
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{
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return;
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}
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ShadowStyle = base.ShadowStyle;
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Add (
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_rightShadow = new ShadowView
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{
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X = Pos.AnchorEnd (1),
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Y = 0,
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Width = 1,
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Height = Dim.Fill (),
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ShadowStyle = ShadowStyle,
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Orientation = Orientation.Vertical
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},
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_bottomShadow = new ShadowView
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{
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X = 0,
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Y = Pos.AnchorEnd (1),
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Width = Dim.Fill (),
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Height = 1,
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ShadowStyle = ShadowStyle,
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Orientation = Orientation.Horizontal
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}
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);
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get => base.ShadowStyle;
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set => base.ShadowStyle = SetShadow (value);
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}
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}
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private void Margin_Highlight (object? sender, CancelEventArgs<HighlightStyle> e)
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{
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if (ShadowStyle != ShadowStyle.None)
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{
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if (_pressed && e.NewValue == HighlightStyle.None)
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{
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// If the view is pressed and the highlight is being removed, move the shadow back.
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// Note, for visual effects reasons, we only move horizontally.
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// TODO: Add a setting or flag that lets the shadow move vertically as well.
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Thickness = new (Thickness.Left - 1, Thickness.Top, Thickness.Right + 1, Thickness.Bottom);
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if (_rightShadow is { })
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{
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_rightShadow.Visible = true;
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}
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if (_bottomShadow is { })
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{
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_bottomShadow.Visible = true;
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}
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_pressed = false;
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return;
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}
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if (!_pressed && e.NewValue.HasFlag (HighlightStyle.Pressed))
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{
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// If the view is not pressed and we want highlight move the shadow
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// Note, for visual effects reasons, we only move horizontally.
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// TODO: Add a setting or flag that lets the shadow move vertically as well.
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Thickness = new (Thickness.Left + 1, Thickness.Top, Thickness.Right - 1, Thickness.Bottom);
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_pressed = true;
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if (_rightShadow is { })
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{
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_rightShadow.Visible = false;
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}
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if (_bottomShadow is { })
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{
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_bottomShadow.Visible = false;
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}
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}
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}
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}
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private void Margin_LayoutStarted (object? sender, LayoutEventArgs e)
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{
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// Adjust the shadow such that it is drawn aligned with the Border
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if (ShadowStyle != ShadowStyle.None && _rightShadow is { } && _bottomShadow is { })
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{
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_rightShadow.Y = Parent.Border.Thickness.Top > 0
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? Parent.Border.Thickness.Top - (Parent.Border.Thickness.Top > 2 && Parent.Border.ShowTitle ? 1 : 0)
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: 1;
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_bottomShadow.X = Parent.Border.Thickness.Left > 0 ? Parent.Border.Thickness.Left : 1;
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}
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}
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}
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