mirror of
https://github.com/gui-cs/Terminal.Gui.git
synced 2025-12-31 02:08:03 +01:00
399 lines
15 KiB
C#
399 lines
15 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Text;
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using JetBrains.Annotations;
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using Terminal.Gui;
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namespace UICatalog.Scenarios;
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[ScenarioMetadata ("ASCIICustomButtonTest", "ASCIICustomButton sample")]
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[ScenarioCategory ("Controls")]
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public class ASCIICustomButtonTest : Scenario
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{
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private static bool _smallerWindow;
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private MenuItem _miSmallerWindow;
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private ScrollViewTestWindow _scrollViewTestWindow;
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public override void Main ()
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{
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_smallerWindow = false;
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Application.Init ();
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Toplevel top = new ();
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var menu = new MenuBar
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{
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Menus =
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[
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new MenuBarItem (
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"_Window Size",
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new []
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{
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_miSmallerWindow =
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new MenuItem (
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"Smaller Window",
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"",
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ChangeWindowSize
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)
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{
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CheckType = MenuItemCheckStyle
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.Checked
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},
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null,
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new MenuItem (
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"Quit",
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"",
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() => Application.RequestStop (),
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null,
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null,
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(KeyCode)Application.QuitKey
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)
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}
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)
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]
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};
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_scrollViewTestWindow = new ScrollViewTestWindow ();
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top.Add (menu, _scrollViewTestWindow);
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Application.Run (top);
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top.Dispose ();
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Application.Shutdown ();
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return;
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void ChangeWindowSize ()
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{
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_smallerWindow = (bool)(_miSmallerWindow.Checked = !_miSmallerWindow.Checked);
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top.Remove (_scrollViewTestWindow);
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_scrollViewTestWindow.Dispose ();
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_scrollViewTestWindow = new ScrollViewTestWindow ();
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top.Add (_scrollViewTestWindow);
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}
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}
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public class ASCIICustomButton : Button
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{
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private FrameView _border;
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private Label _fill;
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public string Description => $"Description of: {Id}";
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public void CustomInitialize ()
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{
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_border = new FrameView { Width = Width, Height = Height };
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var fillText = new StringBuilder ();
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for (var i = 0; i < Viewport.Height; i++)
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{
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if (i > 0)
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{
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fillText.AppendLine ("");
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}
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for (var j = 0; j < Viewport.Width; j++)
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{
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fillText.Append ("█");
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}
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}
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_fill = new Label { Visible = false, CanFocus = false, Text = fillText.ToString () };
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var title = new Label { X = Pos.Center (), Y = Pos.Center (), Text = Text };
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_border.MouseClick += This_MouseClick;
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_fill.MouseClick += This_MouseClick;
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title.MouseClick += This_MouseClick;
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Add (_border, _fill, title);
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}
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protected override void OnHasFocusChanged (bool newHasFocus, [CanBeNull] View previousFocusedView, [CanBeNull] View focusedVew)
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{
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if (newHasFocus)
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{
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_border.Visible = false;
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_fill.Visible = true;
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PointerEnter?.Invoke (this);
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}
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else
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{
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_border.Visible = true;
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_fill.Visible = false;
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}
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}
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public event Action<ASCIICustomButton> PointerEnter;
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private void This_MouseClick (object sender, MouseEventEventArgs obj) { NewMouseEvent (obj.MouseEvent); }
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}
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public class ScrollViewTestWindow : Window
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{
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private const int BUTTON_HEIGHT = 3;
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private const int BUTTON_WIDTH = 25;
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private const int BUTTONS_ON_PAGE = 7;
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private readonly List<Button> _buttons;
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private readonly ScrollView _scrollView;
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private ASCIICustomButton _selected;
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public ScrollViewTestWindow ()
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{
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Title = $"{Application.QuitKey} to Quit - Scenario: ScrollViewTestWindow";
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Label titleLabel = null;
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if (_smallerWindow)
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{
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Width = 80;
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Height = 25;
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_scrollView = new ScrollView
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{
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X = 3,
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Y = 1,
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Width = 24,
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Height = BUTTONS_ON_PAGE * BUTTON_HEIGHT,
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ShowVerticalScrollIndicator = true,
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ShowHorizontalScrollIndicator = false
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};
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}
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else
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{
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Width = Dim.Fill ();
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Height = Dim.Fill ();
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titleLabel = new Label { X = 0, Y = 0, Text = "DOCUMENTS" };
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_scrollView = new ScrollView
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{
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X = 0,
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Y = 1,
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Width = 27,
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Height = BUTTONS_ON_PAGE * BUTTON_HEIGHT,
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ShowVerticalScrollIndicator = true,
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ShowHorizontalScrollIndicator = false
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};
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}
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_scrollView.KeyBindings.Clear ();
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_buttons = new List<Button> ();
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Button prevButton = null;
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var count = 20;
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for (var j = 0; j < count; j++)
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{
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Pos yPos = prevButton == null ? 0 : Pos.Bottom (prevButton);
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var button = new ASCIICustomButton
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{
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Id = j.ToString (),
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Text = $"section {j}",
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Y = yPos,
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Width = BUTTON_WIDTH,
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Height = BUTTON_HEIGHT
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};
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button.Initialized += Button_Initialized;
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button.Accept += Button_Clicked;
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button.PointerEnter += Button_PointerEnter;
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button.MouseClick += Button_MouseClick;
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button.KeyDown += Button_KeyPress;
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_scrollView.Add (button);
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_buttons.Add (button);
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prevButton = button;
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}
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var closeButton = new ASCIICustomButton
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{
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Id = "close",
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Text = "Close",
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Y = Pos.Bottom (prevButton),
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Width = BUTTON_WIDTH,
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Height = BUTTON_HEIGHT
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};
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closeButton.Initialized += Button_Initialized;
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closeButton.Accept += Button_Clicked;
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closeButton.PointerEnter += Button_PointerEnter;
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closeButton.MouseClick += Button_MouseClick;
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closeButton.KeyDown += Button_KeyPress;
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_scrollView.Add (closeButton);
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_buttons.Add (closeButton);
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int pages = _buttons.Count / BUTTONS_ON_PAGE;
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if (_buttons.Count % BUTTONS_ON_PAGE > 0)
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{
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pages++;
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}
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// BUGBUG: set_ContentSize is supposed to be `protected`.
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_scrollView.SetContentSize (new (25, pages * BUTTONS_ON_PAGE * BUTTON_HEIGHT));
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if (_smallerWindow)
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{
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Add (_scrollView);
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}
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else
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{
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Add (titleLabel, _scrollView);
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}
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}
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private void Button_Initialized (object sender, EventArgs e)
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{
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var button = sender as ASCIICustomButton;
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button?.CustomInitialize ();
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}
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private void Button_Clicked (object sender, EventArgs e)
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{
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MessageBox.Query ("Button clicked.", $"'{_selected.Text}' clicked!", "Ok");
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if (_selected.Text == "Close")
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{
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Application.RequestStop ();
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}
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}
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private void Button_KeyPress (object sender, Key obj)
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{
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switch (obj.KeyCode)
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{
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case KeyCode.End:
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_scrollView.ContentOffset = new Point (
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_scrollView.ContentOffset.X,
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-(_scrollView.GetContentSize ().Height
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- _scrollView.Frame.Height
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+ (_scrollView.ShowHorizontalScrollIndicator ? 1 : 0))
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);
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obj.Handled = true;
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return;
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case KeyCode.Home:
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_scrollView.ContentOffset = new Point (_scrollView.ContentOffset.X, 0);
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obj.Handled = true;
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return;
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case KeyCode.PageDown:
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_scrollView.ContentOffset = new Point (
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_scrollView.ContentOffset.X,
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Math.Max (
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_scrollView.ContentOffset.Y
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- _scrollView.Frame.Height,
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-(_scrollView.GetContentSize ().Height
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- _scrollView.Frame.Height
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+ (_scrollView.ShowHorizontalScrollIndicator
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? 1
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: 0))
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)
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);
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obj.Handled = true;
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return;
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case KeyCode.PageUp:
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_scrollView.ContentOffset = new Point (
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_scrollView.ContentOffset.X,
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Math.Min (
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_scrollView.ContentOffset.Y
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+ _scrollView.Frame.Height,
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0
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)
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);
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obj.Handled = true;
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return;
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}
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}
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private void Button_MouseClick (object sender, MouseEventEventArgs obj)
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{
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if (obj.MouseEvent.Flags == MouseFlags.WheeledDown)
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{
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_scrollView.ContentOffset = new Point (
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_scrollView.ContentOffset.X,
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_scrollView.ContentOffset.Y - BUTTON_HEIGHT
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);
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obj.Handled = true;
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}
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else if (obj.MouseEvent.Flags == MouseFlags.WheeledUp)
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{
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_scrollView.ContentOffset = new Point (
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_scrollView.ContentOffset.X,
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Math.Min (_scrollView.ContentOffset.Y + BUTTON_HEIGHT, 0)
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);
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obj.Handled = true;
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}
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}
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private void Button_PointerEnter (ASCIICustomButton obj)
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{
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bool? moveDown;
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if (obj.Frame.Y > _selected?.Frame.Y)
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{
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moveDown = true;
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}
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else if (obj.Frame.Y < _selected?.Frame.Y)
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{
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moveDown = false;
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}
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else
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{
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moveDown = null;
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}
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int offSet = _selected != null
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? obj.Frame.Y - _selected.Frame.Y + -_scrollView.ContentOffset.Y % BUTTON_HEIGHT
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: 0;
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_selected = obj;
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if (moveDown == true && _selected.Frame.Y + _scrollView.ContentOffset.Y + BUTTON_HEIGHT >= _scrollView.Frame.Height && offSet != BUTTON_HEIGHT)
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{
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_scrollView.ContentOffset = new Point (
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_scrollView.ContentOffset.X,
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Math.Min (
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_scrollView.ContentOffset.Y - BUTTON_HEIGHT,
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-(_selected.Frame.Y
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- _scrollView.Frame.Height
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+ BUTTON_HEIGHT)
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)
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);
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}
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else if (moveDown == true && _selected.Frame.Y + _scrollView.ContentOffset.Y >= _scrollView.Frame.Height)
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{
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_scrollView.ContentOffset = new Point (
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_scrollView.ContentOffset.X,
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_scrollView.ContentOffset.Y - BUTTON_HEIGHT
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);
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}
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else if (moveDown == true && _selected.Frame.Y + _scrollView.ContentOffset.Y < 0)
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{
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_scrollView.ContentOffset = new Point (
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_scrollView.ContentOffset.X,
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-_selected.Frame.Y
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);
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}
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else if (moveDown == false && _selected.Frame.Y < -_scrollView.ContentOffset.Y)
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{
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_scrollView.ContentOffset = new Point (
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_scrollView.ContentOffset.X,
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Math.Max (
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_scrollView.ContentOffset.Y + BUTTON_HEIGHT,
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_selected.Frame.Y
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)
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);
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}
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else if (moveDown == false && _selected.Frame.Y + _scrollView.ContentOffset.Y > _scrollView.Frame.Height)
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{
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_scrollView.ContentOffset = new Point (
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_scrollView.ContentOffset.X,
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-(_selected.Frame.Y - _scrollView.Frame.Height + BUTTON_HEIGHT)
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);
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}
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}
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}
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}
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