public override void UpdateAndDraw(ListBox control, TimeSpan time)
{
if (!control.IsDirty)
{
return;
}
int columnOffset;
int columnEnd;
int startingRow;
int endingRow;
Cell appearance = GetStateAppearance(control.State);
Cell scrollBarAppearance = ScrollBarTheme.GetStateAppearance(control.State);
Cell borderAppearance = BorderTheme.GetStateAppearance(control.State);
// Redraw the control
control.Surface.Fill(
appearance.Foreground,
appearance.Background,
appearance.Glyph);
if (DrawBorder)
{
endingRow = control.Height - 2;
startingRow = 1;
columnOffset = 1;
columnEnd = control.Width - 2;
control.Surface.DrawBox(new Rectangle(0, 0, control.Width, control.Height), new Cell(borderAppearance.Foreground, borderAppearance.Background, 0), null, BorderLineStyle);
}
else
{
endingRow = control.Height;
startingRow = 0;
columnOffset = 0;
columnEnd = control.Width;
control.Surface.Fill(borderAppearance.Foreground, borderAppearance.Background, 0, null);
}
int offset = control.IsSliderVisible ? control.Slider.Value : 0;
for (int i = 0; i < endingRow; i++)
{
var itemIndexRelative = i + offset;
if (itemIndexRelative < control.Items.Count)
{
ControlStates state = 0;
if (Helpers.HasFlag(control.State, ControlStates.MouseOver) && control.RelativeIndexMouseOver == itemIndexRelative)
{
Helpers.SetFlag(ref state, ControlStates.MouseOver);
}
if (control.State.HasFlag(ControlStates.MouseLeftButtonDown))
{
Helpers.SetFlag(ref state, ControlStates.MouseLeftButtonDown);
}
if (control.State.HasFlag(ControlStates.MouseRightButtonDown))
{
Helpers.SetFlag(ref state, ControlStates.MouseRightButtonDown);
}
if (control.State.HasFlag(ControlStates.Disabled))
{
Helpers.SetFlag(ref state, ControlStates.Disabled);
}
if (itemIndexRelative == control.SelectedIndex)
{
Helpers.SetFlag(ref state, ControlStates.Selected);
}
ItemTheme.Draw(control.Surface, new Rectangle(columnOffset, i + startingRow, columnEnd, 1), control.Items[itemIndexRelative], state);
}
}
if (control.IsSliderVisible)
{
control.Slider.IsDirty = true;
control.Slider.Update(time);
var y = control.SliderRenderLocation.Y;
for (var ycell = 0; ycell < control.Slider.Height; ycell++)
{
control.Surface.SetGlyph(control.SliderRenderLocation.X, y, control.Slider.Surface[0, ycell].Glyph);
control.Surface.SetCellAppearance(control.SliderRenderLocation.X, y, control.Slider.Surface[0, ycell]);
y++;
}
}
control.IsDirty = Helpers.HasFlag(control.State, ControlStates.MouseOver);
}
/// <inheritdoc />
public override void UpdateAndDraw(ControlBase control, TimeSpan time)
{
if (!(control is ListBox listbox))
{
return;
}
if (!listbox.IsDirty)
{
return;
}
RefreshTheme(control.ThemeColors, control);
int columnOffset;
int columnEnd;
int startingRow;
int endingRow;
Cell appearance = GetStateAppearance(listbox.State);
Cell scrollBarAppearance = ScrollBarTheme.GetStateAppearance(listbox.State);
Cell borderAppearance = BorderTheme.GetStateAppearance(listbox.State);
// Redraw the control
listbox.Surface.Fill(
appearance.Foreground,
appearance.Background,
appearance.Glyph);
if (DrawBorder)
{
endingRow = listbox.Height - 2;
startingRow = 1;
columnOffset = 1;
columnEnd = listbox.Width - 2;
listbox.Surface.DrawBox(new Rectangle(0, 0, listbox.Width, listbox.Height), new Cell(borderAppearance.Foreground, borderAppearance.Background, 0), null, BorderLineStyle);
}
else
{
endingRow = listbox.Height;
startingRow = 0;
columnOffset = 0;
columnEnd = listbox.Width;
listbox.Surface.Fill(borderAppearance.Foreground, borderAppearance.Background, 0, null);
}
ShowHideScrollBar(listbox);
int offset = listbox.IsScrollBarVisible ? listbox.ScrollBar.Value : 0;
for (int i = 0; i < endingRow; i++)
{
int itemIndexRelative = i + offset;
if (itemIndexRelative < listbox.Items.Count)
{
ControlStates state = 0;
if (Helpers.HasFlag(listbox.State, ControlStates.MouseOver) && listbox.RelativeIndexMouseOver == itemIndexRelative)
{
Helpers.SetFlag(ref state, ControlStates.MouseOver);
}
if (listbox.State.HasFlag(ControlStates.MouseLeftButtonDown))
{
Helpers.SetFlag(ref state, ControlStates.MouseLeftButtonDown);
}
if (listbox.State.HasFlag(ControlStates.MouseRightButtonDown))
{
Helpers.SetFlag(ref state, ControlStates.MouseRightButtonDown);
}
if (listbox.State.HasFlag(ControlStates.Disabled))
{
Helpers.SetFlag(ref state, ControlStates.Disabled);
}
if (itemIndexRelative == listbox.SelectedIndex)
{
Helpers.SetFlag(ref state, ControlStates.Selected);
}
listbox.ItemTheme.Draw(listbox.Surface, new Rectangle(columnOffset, i + startingRow, columnEnd, 1), listbox.Items[itemIndexRelative], state);
}
}
if (listbox.IsScrollBarVisible)
{
listbox.ScrollBar.IsDirty = true;
listbox.ScrollBar.Update(time);
int y = listbox.ScrollBarRenderLocation.Y;
for (int ycell = 0; ycell < listbox.ScrollBar.Height; ycell++)
{
listbox.Surface.SetGlyph(listbox.ScrollBarRenderLocation.X, y, listbox.ScrollBar.Surface[0, ycell].Glyph);
listbox.Surface.SetCellAppearance(listbox.ScrollBarRenderLocation.X, y, listbox.ScrollBar.Surface[0, ycell]);
y++;
}
}
listbox.IsDirty = Helpers.HasFlag(listbox.State, ControlStates.MouseOver);
}