private void RenderComboBox(ComboBox comboBox)
{
Point loc = comboBox.AbsoluteLocation();
ConsoleAdapter.Write(new string(' ', comboBox.Width));
ConsoleAdapter.MoveCursor(loc.Left, loc.Top);
ConsoleAdapter.Write(comboBox.VisibleText);
ConsoleAdapter.MoveCursor(loc.Left + comboBox.Width - 1, loc.Top);
ConsoleColor saveColor = ConsoleAdapter.BackgroundColor;
ConsoleAdapter.BackgroundColor = comboBox.ExpanderBackground;
var expanded = comboBox.DroppedDown;
ConsoleAdapter.Write(expanded ? '▲' : '▼');
ConsoleAdapter.BackgroundColor = saveColor;
var initialCurosrTopPosition = loc.Top + 1;
var itemLinesToDraw = comboBox.Items.Count > comboBox.VisibleItemsCount
? comboBox.VisibleItemsCount
: comboBox.Items.Count;
var expanderLocation = new Point
{
Left = loc.Left + 1,
Top = initialCurosrTopPosition
};
var expanderSize = new Size {
Width = comboBox.Width - 1, Height = itemLinesToDraw
};
if (expanded)
{
ConsoleAdapter.MoveCursor(loc.Left + comboBox.Width - 1, loc.Top);
RenderBackgroundBox(
expanderLocation,
expanderSize,
comboBox.BackgroundColor
);
ConsoleAdapter.ForegroundColor = comboBox.ForegroundColor;
ConsoleAdapter.BackgroundColor = comboBox.BackgroundColor;
var startItem = comboBox.SelectedIndex >= comboBox.VisibleItemsCount ? comboBox.SelectedIndex - comboBox.VisibleItemsCount + 1 : 0;
for (int i = startItem; i < startItem + itemLinesToDraw; i++)
{
ConsoleAdapter.MoveCursor(loc.Left + 1, initialCurosrTopPosition);
if (comboBox.Items[i] == comboBox.Items[comboBox.SelectedIndex])
{
ConsoleAdapter.BackgroundColor = RenderOptions.ColorScheme.FocusedBackgroundColor;
ConsoleAdapter.ForegroundColor = comboBox.SelectedColor;
}
ConsoleAdapter.Write(comboBox.Items[i].Text);
ConsoleAdapter.BackgroundColor = comboBox.BackgroundColor;
ConsoleAdapter.ForegroundColor = comboBox.ForegroundColor;
++initialCurosrTopPosition;
}
if (comboBox.Items.Count > comboBox.VisibleItemsCount)
{
var rollerSize = (int)((comboBox.VisibleItemsCount / (float)comboBox.Items.Count) * (comboBox.VisibleItemsCount - 2));
var rollDiff = comboBox.Items.Count - comboBox.VisibleItemsCount;
var rollerOffset = comboBox.SelectedIndex < comboBox.VisibleItemsCount ?
0 :
(int)(((comboBox.SelectedIndex - comboBox.VisibleItemsCount + 1) / (float)rollDiff) * (comboBox.VisibleItemsCount - 2 - rollerSize));
RenderVerticalScroll(
new Point()
{
Left = loc.Left + comboBox.Width - 1, Top = loc.Top + 1
},
comboBox.VisibleItemsCount,
rollerSize,
rollerOffset
);
}
}
else
{
RenderBackgroundBox(
expanderLocation,
expanderSize,
ScoreboardContext.Navigation.Current.Scoreboard.BackgroundColor
);
var overlapped = GetOverlappedControls(expanderLocation, new Point
{
Left = expanderLocation.Left + expanderSize.Width,
Top = expanderLocation.Top + expanderSize.Height
}).Where(_ => _ != comboBox);
RenderOverridedExcept(overlapped, comboBox);
}
}
