void _DrawItem(AuListControl.ZItemDrawArgs e)
{
//var p1 = APerf.Create();
var g = e.graphics;
var ci = _VisibleItem(e.index);
var r = e.bounds;
int xText = _TextHorzOffset;
var sym = ci.FirstSymbol;
//draw images: kind, access, static/abstract
var imageKind = ci.KindImage;
if (imageKind != null)
{
int imgX = r.X + Au.Util.ADpi.ScaleInt(18);
int imgY = (r.Y + r.Bottom + 1) / 2 - imageKind.Height / 2;
int overlayX = r.X + Au.Util.ADpi.ScaleInt(4);
int overlayY = imgY + Au.Util.ADpi.ScaleInt(4);
g.DrawImage(imageKind, imgX, imgY, imageKind.Width, imageKind.Height); //note: would be very slow, but is very fast if DoubleBuffered = true (the control sets it in ctor).
var imageAccess = ci.AccessImage;
if (imageAccess != null)
{
g.DrawImage(imageAccess, overlayX, overlayY, imageAccess.Width, imageAccess.Height);
}
if (sym != null)
{
Bitmap b = null;
if (sym.IsStatic && ci.kind != CiItemKind.Constant && ci.kind != CiItemKind.EnumMember && ci.kind != CiItemKind.Namespace)
{
b = _imgStatic;
}
else if (ci.kind == CiItemKind.Class && sym.IsAbstract)
{
b = _imgAbstract;
}
if (b != null)
{
g.DrawImage(b, overlayX, overlayY, b.Width, b.Height);
}
}
}
//p1.Next();
//draw selection
r.Width -= xText; r.X += xText;
if (e.isSelected)
{
g.FillRectangle(s_selectedBrush, r);
}
//draw text
var s = ci.DisplayText;
ADebug.PrintIf(!ci.ci.DisplayTextPrefix.NE(), s); //we don't support prefix; never seen.
int xEndOfText = 0;
using (var tr = new GdiTextRenderer(g)) {
ColorInt color = ci.moveDown.HasAny(CiItemMoveDownBy.Name | CiItemMoveDownBy.FilterText) ? 0x808080 : 0;
tr.MoveTo(r.X, r.Y);
if (ci.hilite != 0)
{
ulong h = ci.hilite;
for (int normalFrom = 0, boldFrom, boldTo, to = s.Length; normalFrom < to; normalFrom = boldTo)
{
for (boldFrom = normalFrom; boldFrom < to && 0 == (h & 1); boldFrom++)
{
h >>= 1;
}
tr.DrawText(s, color, normalFrom, boldFrom);
if (boldFrom == to)
{
break;
}
for (boldTo = boldFrom; boldTo < to && 0 != (h & 1); boldTo++)
{
h >>= 1;
}
tr.FontBold(); tr.DrawText(s, color, boldFrom, boldTo); tr.FontNormal();
}
}
else
{
tr.DrawText(s, color);
}
if (ci.moveDown.Has(CiItemMoveDownBy.Obsolete))
{
xEndOfText = tr.GetCurrentPosition().x;
}
string green = _GreenSuffix(e.index);
if (green != null)
{
tr.DrawText(green, 0x40A000);
}
}
//draw red line over obsolete items
if (ci.moveDown.Has(CiItemMoveDownBy.Obsolete))
{
int vCenter = r.Y + r.Height / 2;
g.DrawLine(Pens.OrangeRed, r.X, vCenter, xEndOfText, vCenter);
}
//p1.NW('i');
//draw group separator
if (e.index > 0)
{
var cip = _VisibleItem(e.index - 1);
if (cip.moveDown != ci.moveDown || (_groupsEnabled && cip.group != ci.group))
{
g.DrawLine(Pens.YellowGreen, 0, r.Y, r.Right, r.Y);
}
}
}
public void Begin(TVDrawInfo cd, GdiTextRenderer tr)
{
_cd = cd;
_tr = tr;
_textColor = Api.GetSysColor(Api.COLOR_WINDOWTEXT);
}
//Called on resize, scroll, set visible items (replace, clear, expand/collapse, add/remove/move).
void _Measure(bool onScroll = false)
{
if (_dontMeasure)
{
return; //this func is adding/removing scrollbars
}
EndEditLabel();
_labeltip?.Hide();
int sbV = More.Dpi.ScrollbarV_(_dpi), sbH = More.Dpi.ScrollbarH_(_dpi);
var rw = _w.Rect; //never mind: minus border. Currently we don't use border. OK even if used, if just 1-pixel border and no caption.
int width = rw.Width, height = rw.Height;
if (width <= sbV || height <= sbH || _avi.NE_())
{
NativeScrollbar_.ShowVH(_vscroll, false, _hscroll, false);
return;
}
var range = _GetViewRange(onScroll ? _height : height);
//print.it("_Measure", range.from, range.to);
int maxWidth = _itemsWidth;
GdiTextRenderer tr = null;
for (int i = range.from; i < range.to; i++)
{
if (_avi[i].measured > 0)
{
continue;
}
tr ??= new GdiTextRenderer(_dpi);
bool bold = _avi[i].item.IsBold; if (bold)
{
tr.FontBold();
}
var z = tr.MeasureText(_avi[i].item.DisplayText);
if (bold)
{
tr.FontNormal();
}
int wid = ++z.width + _imageSize * (_avi[i].level + 1) + _imageMarginX * 2 + _marginLeft + _marginRight; if (HasCheckboxes)
{
wid += _itemHeight;
}
if (wid > maxWidth)
{
maxWidth = wid;
}
_avi[i].measured = (ushort)Math.Clamp(z.width, 1, ushort.MaxValue);
}
tr?.Dispose();
if (maxWidth > _itemsWidth)
{
_itemsWidth = maxWidth;
}
else if (onScroll)
{
return;
}
//set scrollbars
int itemsHeight = _avi.Length * _itemHeight;
bool needH = _itemsWidth > width && height >= _imageSize + sbH; if (needH)
{
height -= sbH;
}
bool needV = itemsHeight > height && _avi.Length > 1;
if (needV)
{
width -= sbV; if (!needH)
{
needH = _itemsWidth > width && height >= _imageSize + sbH;
}
}
//print.it(needH, needV);
if (_scrollCorrection = (needH && onScroll && _inScrollbarScroll && !_hscroll.Visible))
{
needH = false;
}
_dontMeasure = true;
NativeScrollbar_.ShowVH(_vscroll, needV, _hscroll, needH);
_dontMeasure = false;
if (needV)
{
_vscroll.SetRange(_avi.Length);
}
else
{
_vscroll.NItems = _avi.Length;
}
if (needH)
{
_hscroll.SetRange(_itemsWidth / _imageSize);
}
else
{
_hscroll.NItems = 0;
}
}