public void SetShadowMap(CacheSlot slot, Int32 cacheMapHandler)
{
if (cacheMap[slot] > 0)
{
throw new FieldAccessException("This cache map is already busy, first release it.");
}
cacheMap[slot] = cacheMapHandler;
}
private static int SlotToFlag(CacheSlot slot)
{
// FxCop: Hashtable would be overkill, using switch instead
switch (slot)
{
case CacheSlot.ActiveBorder:
return (int)NativeMethods.Win32SystemColors.ActiveBorder;
case CacheSlot.ActiveCaption:
return (int)NativeMethods.Win32SystemColors.ActiveCaption;
case CacheSlot.ActiveCaptionText:
return (int)NativeMethods.Win32SystemColors.ActiveCaptionText;
case CacheSlot.AppWorkspace:
return (int)NativeMethods.Win32SystemColors.AppWorkspace;
case CacheSlot.Control:
return (int)NativeMethods.Win32SystemColors.Control;
case CacheSlot.ControlDark:
return (int)NativeMethods.Win32SystemColors.ControlDark;
case CacheSlot.ControlDarkDark:
return (int)NativeMethods.Win32SystemColors.ControlDarkDark;
case CacheSlot.ControlLight:
return (int)NativeMethods.Win32SystemColors.ControlLight;
case CacheSlot.ControlLightLight:
return (int)NativeMethods.Win32SystemColors.ControlLightLight;
case CacheSlot.ControlText:
return (int)NativeMethods.Win32SystemColors.ControlText;
case CacheSlot.Desktop:
return (int)NativeMethods.Win32SystemColors.Desktop;
case CacheSlot.GradientActiveCaption:
return (int)NativeMethods.Win32SystemColors.GradientActiveCaption;
case CacheSlot.GradientInactiveCaption:
return (int)NativeMethods.Win32SystemColors.GradientInactiveCaption;
case CacheSlot.GrayText:
return (int)NativeMethods.Win32SystemColors.GrayText;
case CacheSlot.Highlight:
return (int)NativeMethods.Win32SystemColors.Highlight;
case CacheSlot.HighlightText:
return (int)NativeMethods.Win32SystemColors.HighlightText;
case CacheSlot.HotTrack:
return (int)NativeMethods.Win32SystemColors.HotTrack;
case CacheSlot.InactiveBorder:
return (int)NativeMethods.Win32SystemColors.InactiveBorder;
case CacheSlot.InactiveCaption:
return (int)NativeMethods.Win32SystemColors.InactiveCaption;
case CacheSlot.InactiveCaptionText:
return (int)NativeMethods.Win32SystemColors.InactiveCaptionText;
case CacheSlot.Info:
return (int)NativeMethods.Win32SystemColors.Info;
case CacheSlot.InfoText:
return (int)NativeMethods.Win32SystemColors.InfoText;
case CacheSlot.Menu:
return (int)NativeMethods.Win32SystemColors.Menu;
case CacheSlot.MenuBar:
return (int)NativeMethods.Win32SystemColors.MenuBar;
case CacheSlot.MenuHighlight:
return (int)NativeMethods.Win32SystemColors.MenuHighlight;
case CacheSlot.MenuText:
return (int)NativeMethods.Win32SystemColors.MenuText;
case CacheSlot.ScrollBar:
return (int)NativeMethods.Win32SystemColors.ScrollBar;
case CacheSlot.Window:
return (int)NativeMethods.Win32SystemColors.Window;
case CacheSlot.WindowFrame:
return (int)NativeMethods.Win32SystemColors.WindowFrame;
case CacheSlot.WindowText:
return (int)NativeMethods.Win32SystemColors.WindowText;
}
return 0;
}
private static SolidColorBrush MakeBrush(CacheSlot slot)
{
SolidColorBrush brush;
lock (_brushCacheValid)
{
if (!_brushCacheValid[(int)slot])
{
brush = new SolidColorBrush(GetSystemColor(slot));
brush.Freeze();
_brushCache[(int)slot] = brush;
_brushCacheValid[(int)slot] = true;
}
else
{
brush = _brushCache[(int)slot];
}
}
return brush;
}
/// <summary>
/// Query for system colors.
/// </summary>
/// <param name="slot">The color slot.</param>
/// <returns>The system color.</returns>
private static Color GetSystemColor(CacheSlot slot)
{
Color color;
lock (_colorCacheValid)
{
if (!_colorCacheValid[(int)slot])
{
uint argb;
int sysColor = SafeNativeMethods.GetSysColor(SlotToFlag(slot));
argb = (uint)FromWin32Value(sysColor);
color = Color.FromArgb((byte)((argb & 0xff000000) >>24), (byte)((argb & 0x00ff0000) >>16), (byte)((argb & 0x0000ff00) >>8), (byte)(argb & 0x000000ff));
_colorCache[(int)slot] = color;
_colorCacheValid[(int)slot] = true;
}
else
{
color = _colorCache[(int)slot];
}
}
return color;
}
public Int32 GetShadowMap(CacheSlot slot)
{
return(cacheMap[slot]);
}
