/// <summary>Retrieves the value of a <c>MARGINS</c> property.</summary>
/// <param name="rnd">The visual style to query.</param>
/// <param name="dc">A device context for any font selection. This value can be <see langword="null"/>.</param>
/// <param name="prop">The property to retrieve.</param>
/// <returns>The margins defined for the property.</returns>
public static Padding GetMargins2(this VisualStyleRenderer rnd, IDeviceContext dc = null, MarginProperty prop = MarginProperty.ContentMargins)
{
using (var hdc = new SafeHDC(dc))
{
GetThemeMargins(rnd.GetSafeHandle(), hdc, rnd.Part, rnd.State, (int)prop, null, out MARGINS m);
return(new Padding(m.cxLeftWidth, m.cyTopHeight, m.cxRightWidth, m.cyBottomHeight));
}
}
/// <summary>Gets the transition matrix for a visual style.</summary>
/// <param name="rnd">The visual style to query.</param>
/// <returns>A two dimensional array that represents the transition durations, in milliseconds, between any two parts.</returns>
public static int[,] GetTransitionMatrix(this VisualStyleRenderer rnd)
{
var res = GetThemeIntList(rnd.GetSafeHandle(), rnd.Part, rnd.State, (int)ThemeProperty.TMT_TRANSITIONDURATIONS);
if (res == null || res.Length == 0)
{
return(null);
}
var dim = res[0];
var ret = new int[dim, dim];
for (var i = 0; i < dim; i++)
{
for (var j = 0; j < dim; j++)
{
ret[i, j] = res[i * dim + j + 1];
}
}
return(ret);
}
/// <summary>Determines whether a different part is defined for this visual theme.</summary> /// <param name="rnd">The visual style to query.</param> /// <param name="part">The part ID to consider.</param> /// <returns><c>true</c> if the part is defined; otherwise, <c>false</c>.</returns> public static bool IsPartDefined(this VisualStyleRenderer rnd, int part) => IsThemePartDefined(rnd.GetSafeHandle(), part, 0);
/// <summary>Gets the duration of the specified transition.</summary>
/// <param name="rnd">The visual style to query.</param>
/// <param name="toState">State ID of the part after the transition.</param>
/// <param name="fromState">State ID of the part before the transition.</param>
/// <returns>The transition duration, in milliseconds.</returns>
public static uint GetTransitionDuration(this VisualStyleRenderer rnd, int toState, int fromState = 0)
{
GetThemeTransitionDuration(rnd.GetSafeHandle(), rnd.Part, fromState == 0 ? rnd.State : fromState, toState, (int)ThemeProperty.TMT_TRANSITIONDURATIONS, out var dwDuration);
return(dwDuration);
}
public static uint GetTransitionDuration(this VisualStyleRenderer rnd, int toState, int fromState = 0)
{
GetThemeTransitionDuration(rnd.GetSafeHandle(), rnd.Part, fromState == 0 ? rnd.State : fromState, toState, (int)IntegerListProperty.TransitionDuration, out var dwDuration);
return(dwDuration);
}