/// <summary>
/// Draw the button
/// </summary>
/// <param name="focused">True if button has the focus, false otherwise</param>
public override void Draw(bool focused)
{
int w = GetRight() - GetLeft() + 1;
// Main button text
Console.SetCursorPosition(GetLeft(), GetTop());
Console.BackgroundColor = ConsoleTheme.Current.PopupButtonBg;
if (focused)
{
Console.ForegroundColor = ConsoleTheme.Current.PopupButtonSelectedFg;
}
else
{
Console.ForegroundColor = ConsoleTheme.Current.PopupButtonFg;
}
Console.Write(ScreenObject.PadCenter(caption, w));
// Right shadow
Console.BackgroundColor = ConsoleTheme.Current.PopupBg;
Console.ForegroundColor = ConsoleTheme.Current.PopupButtonShadow;
Console.Write(Symbols.lowerHalfBlock);
// Bottom shadow
Console.SetCursorPosition(GetLeft() + 1, GetTop() + 1);
Console.Write(shadowStrip);
}
/// <summary>
/// Draw the text box
/// </summary>
/// <param name="theme">The visual theme to use to draw the dialog</param>
/// <param name="focused">Framework parameter not relevant to this object</param>
public override void Draw(ConsoleTheme theme, bool focused)
{
int l = GetLeft();
int h = GetBottom() - GetTop() + 1;
int index = lines.Count < h ? 0 : topLine;
// Chop one col off the right if we need a scrollbar
int w = GetRight() - l + 1 + (lines.Count > h ? -1 : 0);
if (getBgColor != null)
{
Console.BackgroundColor = getBgColor(theme);
}
else
{
Console.BackgroundColor = theme.TextBoxBg;
}
if (getFgColor != null)
{
Console.ForegroundColor = getFgColor(theme);
}
else
{
Console.ForegroundColor = theme.TextBoxFg;
}
for (int y = GetTop(); y <= GetBottom(); ++y, ++index)
{
Console.SetCursorPosition(l, y);
if (index < lines.Count)
{
switch (align)
{
case TextAlign.Left:
Console.Write(lines[index].PadRight(w));
break;
case TextAlign.Center:
Console.Write(ScreenObject.PadCenter(lines[index], w));
break;
case TextAlign.Right:
Console.Write(lines[index].PadLeft(w));
break;
}
}
else
{
Console.Write("".PadRight(w));
}
}
// Scrollbar
if (lines.Count > h)
{
DrawScrollbar(
theme,
GetRight(), GetTop(), GetBottom(),
GetTop() + 1 + (h - 3) * topLine / (lines.Count - h)
);
}
}
/// <summary>
/// Set the focus to a given ScreenObject
/// </summary>
/// <param name="so">ScreenObject to focus</param>
protected void SetFocus(ScreenObject so)
{
int index = objects.IndexOf(so);
if (index >= 0)
{
focusIndex = index;
}
}
/// <summary>
/// Draw the outline of the dialog and clear the footer
/// </summary>
protected override void DrawBackground()
{
int w = GetRight() - GetLeft() + 1;
string fullHorizLineDouble = new string(Symbols.horizLineDouble, w - 2);
string midSpace = new string(' ', w - 2);
Console.BackgroundColor = ConsoleTheme.Current.PopupBg;
Console.ForegroundColor = ConsoleTheme.Current.PopupOutlineFg;
for (int y = GetTop(); y <= GetBottom(); ++y)
{
if (y < 0 || y >= Console.WindowHeight)
{
continue;
}
Console.SetCursorPosition(GetLeft(), y);
if (y == GetTop())
{
// Top row
string curTitle = CenterHeader();
if (string.IsNullOrEmpty(curTitle))
{
Console.Write(Symbols.upperLeftCornerDouble + fullHorizLineDouble + Symbols.upperRightCornerDouble);
}
else
{
// Title centered
Console.Write(Symbols.upperLeftCornerDouble
+ ScreenObject.PadCenter($" {curTitle} ", w - 2, Symbols.horizLineDouble)
+ Symbols.upperRightCornerDouble);
}
}
else if (y == GetBottom())
{
// Bottom row
Console.Write(Symbols.lowerLeftCornerDouble + fullHorizLineDouble + Symbols.lowerRightCornerDouble);
}
else
{
// Blank lines, mostly padding
Console.Write(Symbols.vertLineDouble + midSpace + Symbols.vertLineDouble);
}
}
DrawShadow(GetLeft(), GetTop(), GetRight(), GetBottom());
}
private void Blur(ScreenObject source, bool forward)
{
if (objects.Count > 0)
{
int loops = 0;
do
{
if (++loops > objects.Count)
{
focusIndex = 0;
break;
}
if (forward)
{
focusIndex = (focusIndex + 1) % objects.Count;
}
else
{
focusIndex = (focusIndex + objects.Count - 1) % objects.Count;
}
} while (!objects[focusIndex].Focusable());
}
}
/// <summary>
/// Add a ScreenObject for inclusion in this display
/// </summary>
/// <param name="so">ScreenObject to Add</param>
protected void AddObject(ScreenObject so)
{
objects.Add(so);
so.OnBlur += Blur;
}
