protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
if (_customDrawFailed)
{
return;
}
try
{
int left = ClientRectangle.Left;
int top = ClientRectangle.Top;
int right = ClientRectangle.Right;
int bottom = ClientRectangle.Bottom;
bool drawPressed = _pressed || (_pressing && _hot);
string backBrushId = drawPressed
? "Sidebar.Button.BackgroundPressed"
: "Sidebar.Button.Background";
Brush backBrush = GUIControls.ColorScheme.GetBrush(_colorScheme, backBrushId, ClientRectangle,
SystemBrushes.Control);
e.Graphics.FillPath(backBrush, _borderPath);
Pen borderPen = GUIControls.ColorScheme.GetPen(_colorScheme, "Sidebar.Button.Border",
SystemPens.ControlDark);
e.Graphics.DrawPath(borderPen, _borderPath);
if (_hot)
{
Pen hotPen = GUIControls.ColorScheme.GetPen(_colorScheme, "Sidebar.Button.BorderHot",
Pens.Blue);
e.Graphics.DrawLine(hotPen, left + 1, top + 2, left + 1, bottom - 3);
e.Graphics.DrawLine(hotPen, left + 2, top + 1, right - 3, top + 1);
e.Graphics.DrawLine(hotPen, right - 2, top + 2, right - 2, bottom - 3);
e.Graphics.DrawLine(hotPen, left + 2, bottom - 2, right - 3, bottom - 2);
e.Graphics.DrawRectangle(hotPen, left + 2, top + 2, ClientRectangle.Width - 5, ClientRectangle.Height - 5);
}
else
{
string leftPenId = drawPressed ? "Sidebar.Button.BorderDarkPressed" : "Sidebar.Button.BorderLight";
string rightPenId = drawPressed ? "Sidebar.Button.BorderLight" : "Sidebar.Button.BorderDark";
Pen leftPen = GUIControls.ColorScheme.GetPen(_colorScheme, leftPenId, Pens.White);
e.Graphics.DrawLine(leftPen, left + 1, top + 2, left + 1, bottom - 3);
e.Graphics.DrawLine(leftPen, left + 2, top + 1, right - 3, top + 1);
Pen rightPen = GUIControls.ColorScheme.GetPen(_colorScheme, rightPenId, SystemPens.ControlDark);
e.Graphics.DrawLine(rightPen, right - 2, top + 2, right - 2, bottom - 3);
e.Graphics.DrawLine(rightPen, left + 2, bottom - 2, right - 3, bottom - 2);
}
IntPtr hdc = e.Graphics.GetHdc();
IntPtr oldFont = Win32Declarations.SelectObject(hdc, _fontHandle);
BackgroundMode oldMode = Win32Declarations.SetBkMode(hdc, BackgroundMode.TRANSPARENT);
int delta = drawPressed ? 1 : 0;
int topSpace = 6;
int iconAreaHeight = 20;
int maxTextHeight = ClientRectangle.Height - topSpace - iconAreaHeight - 2;
SIZE sz = new SIZE();
Win32Declarations.GetTextExtentPoint32(hdc, Text, Text.Length, ref sz);
string textToDraw = Text;
if (sz.cx > maxTextHeight)
{
// calculate how many characters fit if we leave space for the ellipsis
SIZE szClip = new SIZE();
int charsFit;
Win32Declarations.GetTextExtentExPoint(hdc, Text, Text.Length, maxTextHeight - 10,
out charsFit, IntPtr.Zero, out szClip);
if (charsFit > 0)
{
textToDraw = Text.Substring(0, charsFit) + "...";
}
else
{
textToDraw = Text.Substring(0, 1);
}
Win32Declarations.GetTextExtentPoint32(hdc, textToDraw, textToDraw.Length, ref sz);
}
if (_angle == 270)
{
Win32Declarations.TextOut(hdc, ClientRectangle.Right - 2 + delta, ClientRectangle.Top + topSpace + delta,
textToDraw, textToDraw.Length);
}
else if (_angle == 90)
{
Win32Declarations.TextOut(hdc, ClientRectangle.Left + 2 + delta, ClientRectangle.Top + topSpace + sz.cx + delta,
textToDraw, textToDraw.Length);
}
Win32Declarations.SetBkMode(hdc, oldMode);
Win32Declarations.SelectObject(hdc, oldFont);
e.Graphics.ReleaseHdc(hdc);
if (_icon != null)
{
int iconX = (ClientRectangle.Width - 16) / 2;
e.Graphics.DrawIcon(_icon, ClientRectangle.Left + iconX, ClientRectangle.Bottom - iconAreaHeight + delta);
}
}
catch (Exception ex)
{
Core.ReportBackgroundException(ex);
_customDrawFailed = true;
}
}
