/// <summary>
/// Paints the specified item.
/// </summary>
/// <param name="g">A <see cref="Graphics"/> reference.</param>
/// <param name="index">The index of the item.</param>
/// <param name="bounds">The bounds in which to paint the item.</param>
protected override void PaintItem(System.Drawing.Graphics g, int index, Rectangle bounds)
{
ButtonListItem li = BaseItems[index] as ButtonListItem;
System.Diagnostics.Debug.WriteLine($"PaintItem: {Name}[{index}], Bounds=({bounds.X},{bounds.Y},{bounds.Width},{bounds.Height}), " +
$"GlPos=({li.GlyphPosition.X},{li.GlyphPosition.Y}), TPos=({li.TextRect.X},{li.TextRect.Y},{li.TextRect.Width},{li.TextRect.Height})");
// Draw glyph
PaintButton(g, index, bounds);
// Draw text
Rectangle tr = li.TextRect;
tr.Offset(bounds.Location);
TextRenderer.DrawText(g, li.Text, Font, tr, li.Enabled ? ForeColor : SystemColors.GrayText, TextFormatFlags);
Rectangle str = li.SubtextRect;
bool hasSubtext = !string.IsNullOrEmpty(li.Subtext);
if (hasSubtext)
{
str.Offset(bounds.Location);
TextRenderer.DrawText(g, li.Subtext, SubtextFont, str, li.Enabled ? SubtextForeColor : SystemColors.GrayText, TextFormatFlags);
}
// Draw focus rectangle
if (index == FocusedIndex && Focused)
{
Rectangle fr = li.FocusRect;
fr.Offset(bounds.Location);
ControlPaint.DrawFocusRectangle(g, fr);
}
}
/// <summary>
/// Determines whether the specified <see cref="ButtonListItem{T}"/> is equal to the current <see cref="ButtonListItem{T}"/>.
/// </summary>
/// <param name="other">The <see cref="ButtonListItem{T}"/> to compare with the current <see cref="ButtonListItem{T}"/>.</param>
/// <returns>
/// true if the specified <see cref="ButtonListItem{T}"/> is equal to the current <see cref="ButtonListItem{T}"/>; otherwise, false.
/// </returns>
public bool Equals(ButtonListItem <T> other)
{
if (other == null)
{
return(false);
}
return((Checked == other.Checked) && (Enabled == other.Enabled) &&
(Subtext == other.Subtext) && (Text == other.Text) && (ToolTipText == other.ToolTipText));
}
/// <summary>
/// Focuses the next item.
/// </summary>
/// <param name="item">The current item.</param>
/// <param name="forward">if set to <c>true</c>, moves to the next item, otherwise moves to the previous item.</param>
/// <returns><c>true</c> on success, <c>false</c> otherwise.</returns>
protected bool FocusNextItem(ButtonListItem <T> item, bool forward)
{
if (BaseItems.Count > 0)
{
var idx = -1;
if (item != null && (idx = BaseItems.IndexOf(item)) == -1)
{
throw new ArgumentOutOfRangeException(nameof(item));
}
idx = GetNextEnabledItemIndex(idx, forward);
if (idx != -1)
{
SetFocused(idx);
return(true);
}
}
return(false);
}
/// <summary>
/// Measures the specified item.
/// </summary>
/// <param name="g">A <see cref="Graphics"/> reference.</param>
/// <param name="index">The index of the item.</param>
/// <param name="maxSize">Maximum size of the item. Usually only constrains the width.</param>
/// <returns>Minimum size for the item.</returns>
protected internal override Size MeasureItem(System.Drawing.Graphics g, int index, Size maxSize)
{
var chkAlign = new EnumFlagIndexer <ContentAlignment>(CheckAlign, false); // base.RtlTranslateContent(this.CheckAlign);
var txtAlign = new EnumFlagIndexer <ContentAlignment>(TextAlign, false); // base.RtlTranslateContent(this.TextAlign);
ButtonListItem item = BaseItems[index] as ButtonListItem;
if (item == null)
{
return(Size.Empty);
}
// Get glyph size
if (imageSize == Size.Empty)
{
imageSize = GetButtonSize(g);
}
int glyphWithPadding = imageSize.Width + (lrPadding * 2);
// Calculate text size
Size textSize = new Size(maxSize.Width, Int32.MaxValue);
if (!chkAlign[anyCenterAlignment])
{
textSize.Width -= glyphWithPadding;
}
Size tsz = TextRenderer.MeasureText(g, item.Text, Font, textSize, TextFormatFlags);
item.TextRect = new Rectangle(0, 0, textSize.Width, tsz.Height);
// NEW: item.TextRect = new Rectangle(Point.Empty, tsz);
Size stsz = Size.Empty;
item.SubtextRect = Rectangle.Empty;
if (!string.IsNullOrEmpty(item.Subtext))
{
stsz = TextRenderer.MeasureText(g, item.Subtext, SubtextFont, textSize, TextFormatFlags);
item.SubtextRect = new Rectangle(0, tsz.Height + subtextSeparatorHeight, textSize.Width, stsz.Height);
// NEW: item.SubtextRect = new Rectangle(0, tsz.Height + subtextSeparatorHeight, stsz.Width, stsz.Height);
}
// Calculate minimum item height
int minHeight = item.TextRect.Height;
if (!item.SubtextRect.IsEmpty)
{
minHeight += (item.SubtextRect.Height + subtextSeparatorHeight);
}
int textHeight = minHeight;
if (chkAlign[ContentAlignment.TopCenter] || chkAlign[ContentAlignment.BottomCenter])
{
minHeight += (imageSize.Height + tPadding);
}
// Calculate minimum item width
int minWidth = Math.Max(tsz.Width, stsz.Width);
if (imageSize.Width > 0 && !chkAlign[anyCenterAlignment])
{
minWidth += (imageSize.Width + lrPadding);
}
Size itemSize = new Size(maxSize.Width, minHeight);
// NEW: Size itemSize = new Size(minWidth, minHeight);
// Set relative position of glyph
item.GlyphPosition = Point.Empty;
if (chkAlign[anyBottomAlignment])
{
item.GlyphPosition.Y = itemSize.Height - imageSize.Height;
}
else if (chkAlign[anyMiddleAlignment])
{
item.GlyphPosition.Y = (itemSize.Height - imageSize.Height) / 2;
}
else if (chkAlign == ContentAlignment.TopCenter)
{
item.OffsetText(0, imageSize.Height + tPadding);
}
if (chkAlign[anyRightAlignment])
{
item.GlyphPosition.X = itemSize.Width - imageSize.Width;
item.OffsetText(lrPadding, 0);
}
else if (chkAlign[anyCenterAlignment])
{
item.GlyphPosition.X = (itemSize.Width - imageSize.Width) / 2;
if (item.TextRect.Width < item.SubtextRect.Width)
{
item.TextRect.Offset((item.SubtextRect.Width - item.TextRect.Width) / 2, 0);
}
else
{
item.SubtextRect.Offset((item.TextRect.Width - item.SubtextRect.Width) / 2, 0);
}
}
else
{
item.OffsetText(imageSize.Width + lrPadding, 0);
}
// Set text focus rectangle
item.FocusRect = Rectangle.Union(item.TextRect, item.SubtextRect);
/*item.FocusRect = new Rectangle(item.TextRect.Location, new Size(Math.Min(Math.Max(tsz.Width, stsz.Width), maxSize.Width), textHeight));
* if ((txtAlign & anyCenterAlignment) != (ContentAlignment)0)
* item.FocusRect.X += (itemSize.Width - item.FocusRect.Width) / 2;
* else if ((txtAlign & anyRightAlignment) != (ContentAlignment)0)
* item.FocusRect.X = itemSize.Width - item.FocusRect.Width - imageSize.Width - lrPadding;*/
// Adjust text position for bottom or middle
if (txtAlign[anyBottomAlignment])
{
item.OffsetText(0, itemSize.Height - item.TextRect.Height);
}
else if (txtAlign[anyMiddleAlignment])
{
item.OffsetText(0, (itemSize.Height - item.TextRect.Height) / 2);
}
return(itemSize);
}
/// <summary>
/// Determines whether the specified item is enabled.
/// </summary>
/// <param name="index">The item index.</param>
/// <returns>
/// <c>true</c> if item is enabled; otherwise, <c>false</c>.
/// </returns>
protected override bool IsItemEnabled(int index)
{
ButtonListItem item = BaseItems[index] as ButtonListItem;
return(item == null ? true : item.Enabled);
}
/// <summary>
/// Gets the specified item's tooltip text.
/// </summary>
/// <param name="index">The index of the item.</param>
/// <returns>
/// Tooltip text to display. <c>null</c> or <see cref="String.Empty"/> to display no tooltip.
/// </returns>
protected override string GetItemToolTipText(int index)
{
ButtonListItem item = BaseItems[index] as ButtonListItem;
return(item == null ? string.Empty : item.ToolTipText);
}
