mirror of https://github.com/dahall/Vanara.git
87 lines
4.5 KiB
C#
87 lines
4.5 KiB
C#
using System.Drawing;
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using System.Windows.Forms;
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using System.Windows.Forms.VisualStyles;
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using Vanara.PInvoke;
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using static Vanara.PInvoke.UxTheme;
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namespace Vanara.Extensions;
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public static partial class VisualStylesRendererExtension
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{
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/// <summary>Retrieves the value of a <c>MARGINS</c> property.</summary>
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/// <param name="rnd">The visual style to query.</param>
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/// <param name="dc">A device context for any font selection. This value can be <see langword="null"/>.</param>
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/// <param name="prop">The property to retrieve.</param>
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/// <returns>The margins defined for the property.</returns>
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public static Padding GetMargins2(this VisualStyleRenderer rnd, IDeviceContext? dc = null, MarginProperty prop = MarginProperty.ContentMargins)
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{
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using var hdc = new SafeTempHDC(dc);
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GetThemeMargins(rnd.GetSafeHandle(), hdc, rnd.Part, rnd.State, (int)prop, null, out MARGINS m);
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return new Padding(m.cxLeftWidth, m.cyTopHeight, m.cxRightWidth, m.cyBottomHeight);
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}
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/// <summary>Gets the duration of the specified transition.</summary>
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/// <param name="rnd">The visual style to query.</param>
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/// <param name="toState">State ID of the part after the transition.</param>
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/// <param name="fromState">State ID of the part before the transition.</param>
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/// <returns>The transition duration, in milliseconds.</returns>
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public static uint GetTransitionDuration(this VisualStyleRenderer rnd, int toState, int fromState = 0)
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{
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GetThemeTransitionDuration(rnd.GetSafeHandle(), rnd.Part, fromState == 0 ? rnd.State : fromState, toState, (int)ThemeProperty.TMT_TRANSITIONDURATIONS, out var dwDuration);
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return dwDuration;
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}
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/// <summary>Gets the transition matrix for a visual style.</summary>
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/// <param name="rnd">The visual style to query.</param>
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/// <returns>A two dimensional array that represents the transition durations, in milliseconds, between any two parts.</returns>
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public static int[,]? GetTransitionMatrix(this VisualStyleRenderer rnd)
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{
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var res = GetThemeIntList(rnd.GetSafeHandle(), rnd.Part, rnd.State, (int)ThemeProperty.TMT_TRANSITIONDURATIONS);
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if (res == null || res.Length == 0) return null;
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var dim = res[0];
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var ret = new int[dim, dim];
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for (var i = 0; i < dim; i++)
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for (var j = 0; j < dim; j++)
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ret[i, j] = res[i*dim + j + 1];
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return ret;
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}
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/// <summary>Determines whether a different part is defined for this visual theme.</summary>
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/// <param name="rnd">The visual style to query.</param>
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/// <param name="part">The part ID to consider.</param>
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/// <returns><c>true</c> if the part is defined; otherwise, <c>false</c>.</returns>
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public static bool IsPartDefined(this VisualStyleRenderer rnd, int part) => IsThemePartDefined(rnd.GetSafeHandle(), part, 0);
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/// <summary>Prevents the application of visual styling for this specific window or control.</summary>
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/// <param name="window">The window or control.</param>
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public static void PreventVisualStyling(this IWin32Window window) => SetWindowTheme(window, " ", new[] { " " });
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/// <summary>
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/// Sets the state of the <see cref="VisualStyleRenderer"/>.
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/// </summary>
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/// <param name="rnd">The <see cref="VisualStyleRenderer"/> instance.</param>
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/// <param name="state">The state.</param>
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public static void SetState(this VisualStyleRenderer rnd, int state) => rnd.SetParameters(rnd.Class, rnd.Part, state);
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/// <summary>Sets the window theme.</summary>
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/// <param name="window">The window on which to apply the theme.</param>
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/// <param name="subAppName">Name of the sub application. This is the theme name (e.g. "Explorer").</param>
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/// <param name="subIdList">The sub identifier list. This can be left <c>null</c>.</param>
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public static void SetWindowTheme(this IWin32Window window, string? subAppName, string[]? subIdList = null)
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{
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var idl = subIdList == null ? null : string.Join(";", subIdList);
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try { UxTheme.SetWindowTheme(window.Handle, subAppName, idl); } catch { }
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}
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/// <summary>Sets attributes to control how visual styles are applied to a specified window.</summary>
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/// <param name="window">The window.</param>
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/// <param name="attr">The attributes to apply or disable.</param>
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/// <param name="enable">if set to <c>true</c> enable the attribute, otherwise disable it.</param>
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public static void SetWindowThemeAttribute(this IWin32Window window, WTNCA attr, bool enable = true)
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{
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try { SetWindowThemeNonClientAttributes(window.Handle, attr, enable); }
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catch (EntryPointNotFoundException) { }
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}
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private static SafeHTHEME GetSafeHandle(this VisualStyleRenderer rnd) => new(rnd.Handle, false);
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} |