Files
Terminal.Gui/Terminal.Gui/Core/Window.cs
BDisp b185722ab6 Standalone update fix (#1596)
* Updating nuget package and fixing nonworking code.

* Adding some more improvements and launch for UseSystemConsole.

* Fixes layout issue.

* Also added a launch for UseSystemConsole for the Example project.

* Fixing unit tests.

* Trying fixing timeouts duplicate keys.
2022-02-18 07:23:46 -08:00

339 lines
11 KiB
C#

//
// Authors:
// Miguel de Icaza (miguel@gnome.org)
//
// NOTE: Window is functionally identical to FrameView with the following exceptions.
// - Window is a Toplevel
// - FrameView Does not support padding (but should)
// - FrameView Does not support mouse dragging
// - FrameView Does not support IEnumerable
// Any udpates done here should probably be done in FrameView as well; TODO: Merge these classes
using System.Collections;
using NStack;
namespace Terminal.Gui {
/// <summary>
/// A <see cref="Toplevel"/> <see cref="View"/> that draws a border around its <see cref="View.Frame"/> with a <see cref="Title"/> at the top.
/// </summary>
/// <remarks>
/// The 'client area' of a <see cref="Window"/> is a rectangle deflated by one or more rows/columns from <see cref="View.Bounds"/>. A this time there is no
/// API to determine this rectangle.
/// </remarks>
public class Window : Toplevel {
View contentView;
ustring title;
/// <summary>
/// The title to be displayed for this window.
/// </summary>
/// <value>The title</value>
public ustring Title {
get => title;
set {
title = value;
SetNeedsDisplay ();
}
}
/// <inheritdoc/>
public override Border Border {
get => base.Border;
set {
if (base.Border != null && base.Border.Child != null && value.Child == null) {
value.Child = base.Border.Child;
}
base.Border = value;
if (value == null) {
return;
}
Rect frame;
if (contentView != null && (contentView.Width is Dim || contentView.Height is Dim)) {
frame = Rect.Empty;
} else {
frame = Frame;
}
AdjustContentView (frame);
Border.BorderChanged += Border_BorderChanged;
}
}
void Border_BorderChanged (Border border)
{
Rect frame;
if (contentView != null && (contentView.Width is Dim || contentView.Height is Dim)) {
frame = Rect.Empty;
} else {
frame = Frame;
}
AdjustContentView (frame);
}
/// <summary>
/// ContentView is an internal implementation detail of Window. It is used to host Views added with <see cref="Add(View)"/>.
/// Its ONLY reason for being is to provide a simple way for Window to expose to those SubViews that the Window's Bounds
/// are actually deflated due to the border.
/// </summary>
class ContentView : View {
Window instance;
public ContentView (Rect frame, Window instance) : base (frame)
{
this.instance = instance;
}
public ContentView (Window instance) : base ()
{
this.instance = instance;
}
public override void OnCanFocusChanged ()
{
if (MostFocused == null && CanFocus && Visible) {
EnsureFocus ();
}
base.OnCanFocusChanged ();
}
public override bool MouseEvent (MouseEvent mouseEvent)
{
return instance.MouseEvent (mouseEvent);
}
}
/// <summary>
/// Initializes a new instance of the <see cref="Gui.Window"/> class with an optional title using <see cref="LayoutStyle.Absolute"/> positioning.
/// </summary>
/// <param name="frame">Superview-relative rectangle specifying the location and size</param>
/// <param name="title">Title</param>
/// <remarks>
/// This constructor initializes a Window with a <see cref="LayoutStyle"/> of <see cref="LayoutStyle.Absolute"/>. Use constructors
/// that do not take <c>Rect</c> parameters to initialize a Window with <see cref="LayoutStyle.Computed"/>.
/// </remarks>
public Window (Rect frame, ustring title = null) : this (frame, title, padding: 0, border: null)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="Window"/> class with an optional title using <see cref="LayoutStyle.Computed"/> positioning.
/// </summary>
/// <param name="title">Title.</param>
/// <remarks>
/// This constructor initializes a View with a <see cref="LayoutStyle"/> of <see cref="LayoutStyle.Computed"/>.
/// Use <see cref="View.X"/>, <see cref="View.Y"/>, <see cref="View.Width"/>, and <see cref="View.Height"/> properties to dynamically control the size and location of the view.
/// </remarks>
public Window (ustring title = null) : this (title, padding: 0, border: null)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="Window"/> class using <see cref="LayoutStyle.Computed"/> positioning.
/// </summary>
public Window () : this (title: null) { }
/// <summary>
/// Initializes a new instance of the <see cref="Window"/> using <see cref="LayoutStyle.Absolute"/> positioning with the specified frame for its location, with the specified frame padding,
/// and an optional title.
/// </summary>
/// <param name="frame">Superview-relative rectangle specifying the location and size</param>
/// <param name="title">Title</param>
/// <param name="padding">Number of characters to use for padding of the drawn frame.</param>
/// <param name="border">The <see cref="Border"/>.</param>
/// <remarks>
/// This constructor initializes a Window with a <see cref="LayoutStyle"/> of <see cref="LayoutStyle.Absolute"/>. Use constructors
/// that do not take <c>Rect</c> parameters to initialize a Window with <see cref="LayoutStyle"/> of <see cref="LayoutStyle.Computed"/>
/// </remarks>
public Window (Rect frame, ustring title = null, int padding = 0, Border border = null) : base (frame)
{
Initialize (title, frame, padding, border);
}
/// <summary>
/// Initializes a new instance of the <see cref="Window"/> using <see cref="LayoutStyle.Computed"/> positioning,
/// and an optional title.
/// </summary>
/// <param name="title">Title.</param>
/// <param name="padding">Number of characters to use for padding of the drawn frame.</param>
/// <param name="border">The <see cref="Border"/>.</param>
/// <remarks>
/// This constructor initializes a View with a <see cref="LayoutStyle"/> of <see cref="LayoutStyle.Computed"/>.
/// Use <see cref="View.X"/>, <see cref="View.Y"/>, <see cref="View.Width"/>, and <see cref="View.Height"/> properties to dynamically control the size and location of the view.
/// </remarks>
public Window (ustring title = null, int padding = 0, Border border = null) : base ()
{
Initialize (title, Rect.Empty, padding, border);
}
void Initialize (ustring title, Rect frame, int padding = 0, Border border = null)
{
CanFocus = true;
ColorScheme = Colors.Base;
Title = title;
if (border == null) {
Border = new Border () {
BorderStyle = BorderStyle.Single,
Padding = new Thickness (padding),
BorderBrush = ColorScheme.Normal.Background
};
} else {
Border = border;
}
}
void AdjustContentView (Rect frame)
{
var borderLength = Border.DrawMarginFrame ? 1 : 0;
var sumPadding = Border.GetSumThickness ();
var wb = new Size ();
if (frame == Rect.Empty) {
wb.Width = borderLength + sumPadding.Right;
wb.Height = borderLength + sumPadding.Bottom;
if (contentView == null) {
contentView = new ContentView (this) {
X = borderLength + sumPadding.Left,
Y = borderLength + sumPadding.Top,
Width = Dim.Fill (wb.Width),
Height = Dim.Fill (wb.Height)
};
} else {
contentView.X = borderLength + sumPadding.Left;
contentView.Y = borderLength + sumPadding.Top;
contentView.Width = Dim.Fill (wb.Width);
contentView.Height = Dim.Fill (wb.Height);
}
} else {
wb.Width = (2 * borderLength) + sumPadding.Right + sumPadding.Left;
wb.Height = (2 * borderLength) + sumPadding.Bottom + sumPadding.Top;
var cFrame = new Rect (borderLength + sumPadding.Left, borderLength + sumPadding.Top, frame.Width - wb.Width, frame.Height - wb.Height);
if (contentView == null) {
contentView = new ContentView (cFrame, this);
} else {
contentView.Frame = cFrame;
}
}
base.Add (contentView);
Border.Child = contentView;
}
///// <summary>
///// Enumerates the various <see cref="View"/>s in the embedded <see cref="ContentView"/>.
///// </summary>
///// <returns>The enumerator.</returns>
//public new IEnumerator GetEnumerator ()
//{
// return contentView.GetEnumerator ();
//}
/// <inheritdoc/>
public override void Add (View view)
{
contentView.Add (view);
if (view.CanFocus) {
CanFocus = true;
}
AddMenuStatusBar (view);
}
/// <inheritdoc/>
public override void Remove (View view)
{
if (view == null) {
return;
}
SetNeedsDisplay ();
contentView.Remove (view);
if (contentView.InternalSubviews.Count < 1) {
CanFocus = false;
}
RemoveMenuStatusBar (view);
if (view != contentView && Focused == null) {
FocusFirst ();
}
}
/// <inheritdoc/>
public override void RemoveAll ()
{
contentView.RemoveAll ();
}
///<inheritdoc/>
public override void Redraw (Rect bounds)
{
var padding = Border.GetSumThickness ();
var scrRect = ViewToScreen (new Rect (0, 0, Frame.Width, Frame.Height));
//var borderLength = Border.DrawMarginFrame ? 1 : 0;
// BUGBUG: Why do we draw the frame twice? This call is here to clear the content area, I think. Why not just clear that area?
if (!NeedDisplay.IsEmpty) {
Driver.SetAttribute (GetNormalColor ());
//Driver.DrawWindowFrame (scrRect, padding.Left + borderLength, padding.Top + borderLength, padding.Right + borderLength, padding.Bottom + borderLength,
// Border.BorderStyle != BorderStyle.None, fill: true, Border);
Border.DrawContent ();
}
var savedClip = contentView.ClipToBounds ();
// Redraw our contentView
// TODO: smartly constrict contentView.Bounds to just be what intersects with the 'bounds' we were passed
contentView.Redraw (contentView.Bounds);
Driver.Clip = savedClip;
ClearLayoutNeeded ();
ClearNeedsDisplay ();
if (Border.BorderStyle != BorderStyle.None) {
Driver.SetAttribute (GetNormalColor ());
//Driver.DrawWindowFrame (scrRect, padding.Left + borderLength, padding.Top + borderLength, padding.Right + borderLength, padding.Bottom + borderLength,
// Border.BorderStyle != BorderStyle.None, fill: true, Border.BorderStyle);
if (HasFocus)
Driver.SetAttribute (ColorScheme.HotNormal);
Driver.DrawWindowTitle (scrRect, Title, padding.Left, padding.Top, padding.Right, padding.Bottom);
}
Driver.SetAttribute (GetNormalColor ());
// Checks if there are any SuperView view which intersect with this window.
if (SuperView != null) {
SuperView.SetNeedsLayout ();
SuperView.SetNeedsDisplay ();
}
}
/// <inheritdoc/>
public override void OnCanFocusChanged ()
{
if (contentView != null) {
contentView.CanFocus = CanFocus;
}
base.OnCanFocusChanged ();
}
/// <summary>
/// The text displayed by the <see cref="Label"/>.
/// </summary>
public override ustring Text {
get => contentView.Text;
set {
base.Text = value;
if (contentView != null) {
contentView.Text = value;
}
}
}
/// <summary>
/// Controls the text-alignment property of the label, changing it will redisplay the <see cref="Label"/>.
/// </summary>
/// <value>The text alignment.</value>
public override TextAlignment TextAlignment {
get => contentView.TextAlignment;
set {
base.TextAlignment = contentView.TextAlignment = value;
}
}
}
}