void Init(Rect frame)
{
contentView = new View(frame);
vertical = new ScrollBarView(1, 0, isVertical: true)
{
X = Pos.AnchorEnd(1),
Y = 0,
Width = 1,
Height = Dim.Fill(showHorizontalScrollIndicator ? 1 : 0)
};
vertical.ChangedPosition += delegate {
ContentOffset = new Point(ContentOffset.X, vertical.Position);
};
vertical.Host = this;
horizontal = new ScrollBarView(1, 0, isVertical: false)
{
X = 0,
Y = Pos.AnchorEnd(1),
Width = Dim.Fill(showVerticalScrollIndicator ? 1 : 0),
Height = 1
};
horizontal.ChangedPosition += delegate {
ContentOffset = new Point(horizontal.Position, ContentOffset.Y);
};
horizontal.Host = this;
base.Add(contentView);
CanFocus = true;
MouseEnter += View_MouseEnter;
MouseLeave += View_MouseLeave;
contentView.MouseEnter += View_MouseEnter;
contentView.MouseLeave += View_MouseLeave;
}
public void Scrolling_With_Default_Constructor_Do_Not_Scroll()
{
var sbv = new ScrollBarView {
Position = 1
};
Assert.NotEqual(1, sbv.Position);
Assert.Equal(0, sbv.Position);
}
public void Hosting_Two_Horizontal_ScrollBarView_Throws_ArgumentException()
{
var top = new Toplevel();
var host = new View();
top.Add(host);
var v = new ScrollBarView(host, false);
var h = new ScrollBarView(host, false);
Assert.Throws <ArgumentException> (null, () => v.OtherScrollBarView = h);
Assert.Throws <ArgumentException> (null, () => h.OtherScrollBarView = v);
}
/// <summary>
/// Initializes a new instance of the <see cref="Gui.ScrollBarView"/> class using <see cref="LayoutStyle.Computed"/> layout.
/// </summary>
/// <param name="host">The view that will host this scrollbar.</param>
/// <param name="isVertical">If set to <c>true</c> this is a vertical scrollbar, otherwise, the scrollbar is horizontal.</param>
/// <param name="showBothScrollIndicator">If set to <c>true (default)</c> will have the other scrollbar, otherwise will have only one.</param>
public ScrollBarView(View host, bool isVertical, bool showBothScrollIndicator = true) : this(0, 0, isVertical)
{
if (host == null)
{
throw new ArgumentNullException("The host parameter can't be null.");
}
else if (host.SuperView == null)
{
throw new ArgumentNullException("The host SuperView parameter can't be null.");
}
hosted = true;
ColorScheme = host.ColorScheme;
X = isVertical ? Pos.Right(host) - 1 : Pos.Left(host);
Y = isVertical ? Pos.Top(host) : Pos.Bottom(host) - 1;
Host = host;
CanFocus = host.CanFocus;
Enabled = host.Enabled;
Visible = host.Visible;
Host.CanFocusChanged += Host_CanFocusChanged;
Host.EnabledChanged += Host_EnabledChanged;
Host.VisibleChanged += Host_VisibleChanged;
Host.SuperView.Add(this);
AutoHideScrollBars = true;
if (showBothScrollIndicator)
{
OtherScrollBarView = new ScrollBarView(0, 0, !isVertical)
{
ColorScheme = host.ColorScheme,
Host = host,
CanFocus = host.CanFocus,
Enabled = host.Enabled,
Visible = host.Visible,
OtherScrollBarView = this
};
OtherScrollBarView.hosted = true;
OtherScrollBarView.X = OtherScrollBarView.IsVertical ? Pos.Right(host) - 1 : Pos.Left(host);
OtherScrollBarView.Y = OtherScrollBarView.IsVertical ? Pos.Top(host) : Pos.Bottom(host) - 1;
OtherScrollBarView.Host.SuperView.Add(OtherScrollBarView);
OtherScrollBarView.showScrollIndicator = true;
}
ShowScrollIndicator = true;
contentBottomRightCorner = new View(" ")
{
Visible = host.Visible
};
Host.SuperView.Add(contentBottomRightCorner);
contentBottomRightCorner.X = Pos.Right(host) - 1;
contentBottomRightCorner.Y = Pos.Bottom(host) - 1;
contentBottomRightCorner.Width = 1;
contentBottomRightCorner.Height = 1;
contentBottomRightCorner.MouseClick += ContentBottomRightCorner_MouseClick;
}
public void Hosting_A_View_To_A_ScrollBarView()
{
RemoveHandlers();
_scrollBar = new ScrollBarView(_hostView, true);
Assert.True(_scrollBar.IsVertical);
Assert.False(_scrollBar.OtherScrollBarView.IsVertical);
Assert.Equal(_scrollBar.Position, _hostView.Top);
Assert.NotEqual(_scrollBar.Size, _hostView.Lines);
Assert.Equal(_scrollBar.OtherScrollBarView.Position, _hostView.Left);
Assert.NotEqual(_scrollBar.OtherScrollBarView.Size, _hostView.Cols);
AddHandlers();
_hostView.SuperView.LayoutSubviews();
_hostView.Redraw(_hostView.Bounds);
Assert.Equal(_scrollBar.Position, _hostView.Top);
Assert.Equal(_scrollBar.Size, _hostView.Lines + 1);
Assert.Equal(_scrollBar.OtherScrollBarView.Position, _hostView.Left);
Assert.Equal(_scrollBar.OtherScrollBarView.Size, _hostView.Cols + 1);
}
void Initialize(Rect frame)
{
contentView = new View(frame);
vertical = new ScrollBarView(1, 0, isVertical: true)
{
X = Pos.AnchorEnd(1),
Y = 0,
Width = 1,
Height = Dim.Fill(showHorizontalScrollIndicator ? 1 : 0)
};
vertical.ChangedPosition += delegate {
ContentOffset = new Point(ContentOffset.X, vertical.Position);
};
vertical.Host = this;
horizontal = new ScrollBarView(1, 0, isVertical: false)
{
X = 0,
Y = Pos.AnchorEnd(1),
Width = Dim.Fill(showVerticalScrollIndicator ? 1 : 0),
Height = 1
};
horizontal.ChangedPosition += delegate {
ContentOffset = new Point(horizontal.Position, ContentOffset.Y);
};
horizontal.Host = this;
vertical.OtherScrollBarView = horizontal;
horizontal.OtherScrollBarView = vertical;
base.Add(contentView);
CanFocus = true;
MouseEnter += View_MouseEnter;
MouseLeave += View_MouseLeave;
contentView.MouseEnter += View_MouseEnter;
contentView.MouseLeave += View_MouseLeave;
// Things this view knows how to do
AddCommand(Command.ScrollUp, () => ScrollUp(1));
AddCommand(Command.ScrollDown, () => ScrollDown(1));
AddCommand(Command.ScrollLeft, () => ScrollLeft(1));
AddCommand(Command.ScrollRight, () => ScrollRight(1));
AddCommand(Command.PageUp, () => ScrollUp(Bounds.Height));
AddCommand(Command.PageDown, () => ScrollDown(Bounds.Height));
AddCommand(Command.PageLeft, () => ScrollLeft(Bounds.Width));
AddCommand(Command.PageRight, () => ScrollRight(Bounds.Width));
AddCommand(Command.TopHome, () => ScrollUp(contentSize.Height));
AddCommand(Command.BottomEnd, () => ScrollDown(contentSize.Height));
AddCommand(Command.LeftHome, () => ScrollLeft(contentSize.Width));
AddCommand(Command.RightEnd, () => ScrollRight(contentSize.Width));
// Default keybindings for this view
AddKeyBinding(Key.CursorUp, Command.ScrollUp);
AddKeyBinding(Key.CursorDown, Command.ScrollDown);
AddKeyBinding(Key.CursorLeft, Command.ScrollLeft);
AddKeyBinding(Key.CursorRight, Command.ScrollRight);
AddKeyBinding(Key.PageUp, Command.PageUp);
AddKeyBinding((Key)'v' | Key.AltMask, Command.PageUp);
AddKeyBinding(Key.PageDown, Command.PageDown);
AddKeyBinding(Key.V | Key.CtrlMask, Command.PageDown);
AddKeyBinding(Key.PageUp | Key.CtrlMask, Command.PageLeft);
AddKeyBinding(Key.PageDown | Key.CtrlMask, Command.PageRight);
AddKeyBinding(Key.Home, Command.TopHome);
AddKeyBinding(Key.End, Command.BottomEnd);
AddKeyBinding(Key.Home | Key.CtrlMask, Command.LeftHome);
AddKeyBinding(Key.End | Key.CtrlMask, Command.RightEnd);
}
