447 lines
15 KiB
C#
447 lines
15 KiB
C#
//
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// VisualStyleRenderer.cs
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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// Copyright (c) 2006 Novell, Inc.
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//
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// Authors:
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// Jonathan Pobst (monkey@jpobst.com)
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//
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using System.Drawing;
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namespace System.Windows.Forms.VisualStyles
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{
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public sealed class VisualStyleRenderer
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{
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private string class_name;
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private int part;
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private int state;
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private IntPtr theme;
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private int last_hresult = 0;
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private ThemeHandleManager theme_handle_manager = new ThemeHandleManager ();
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#region Public Constructors
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public VisualStyleRenderer (string className, int part, int state)
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{
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theme_handle_manager.VisualStyleRenderer = this;
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this.SetParameters (className, part, state);
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}
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public VisualStyleRenderer (VisualStyleElement element)
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: this (element.ClassName, element.Part, element.State) {
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}
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#endregion
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#region Public Properties
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public String Class { get { return this.class_name; } }
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public IntPtr Handle { get { return this.theme; } }
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public int LastHResult { get { return this.last_hresult; } }
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public int Part { get { return this.part; } }
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public int State { get { return this.state; } }
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public static bool IsSupported {
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get {
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if (!VisualStyleInformation.IsEnabledByUser)
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return false;
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if (Application.VisualStyleState == VisualStyleState.ClientAndNonClientAreasEnabled ||
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Application.VisualStyleState == VisualStyleState.ClientAreaEnabled)
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return true;
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return false;
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}
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}
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#endregion
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#region Public Static Methods
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public static bool IsElementDefined (VisualStyleElement element)
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{
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if (!IsSupported)
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throw new InvalidOperationException ("Visual Styles are not enabled.");
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if (IsElementKnownToBeSupported (element.ClassName, element.Part, element.State))
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return true;
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IntPtr theme = VisualStyles.UxThemeOpenThemeData (IntPtr.Zero, element.ClassName);
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if (theme == IntPtr.Zero)
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return false;
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bool retval = VisualStyles.UxThemeIsThemePartDefined (theme, element.Part);
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VisualStyles.UxThemeCloseThemeData (theme);
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return retval;
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}
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#endregion
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#region Public Instance Methods
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public void DrawBackground (IDeviceContext dc, Rectangle bounds)
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{
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if (dc == null)
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throw new ArgumentNullException ("dc");
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last_hresult = VisualStyles.UxThemeDrawThemeBackground (theme, dc, this.part, this.state, bounds);
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}
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public void DrawBackground (IDeviceContext dc, Rectangle bounds, Rectangle clipRectangle)
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{
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if (dc == null)
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throw new ArgumentNullException ("dc");
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last_hresult = VisualStyles.UxThemeDrawThemeBackground (theme, dc, this.part, this.state, bounds, clipRectangle);
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}
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public Rectangle DrawEdge (IDeviceContext dc, Rectangle bounds, Edges edges, EdgeStyle style, EdgeEffects effects)
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{
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if (dc == null)
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throw new ArgumentNullException ("dc");
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Rectangle result;
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last_hresult = VisualStyles.UxThemeDrawThemeEdge (theme, dc, this.part, this.state, bounds, edges, style, effects, out result);
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return result;
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}
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public void DrawImage (Graphics g, Rectangle bounds, ImageList imageList, int imageIndex)
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{
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if (g == null)
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throw new ArgumentNullException ("g");
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if (imageIndex < 0 || imageIndex > imageList.Images.Count - 1)
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throw new ArgumentOutOfRangeException ("imageIndex");
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if (imageList.Images[imageIndex] == null)
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throw new ArgumentNullException ("imageIndex");
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g.DrawImage (imageList.Images[imageIndex], bounds);
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}
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public void DrawImage (Graphics g, Rectangle bounds, Image image)
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{
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if (g == null)
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throw new ArgumentNullException ("g");
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if (image == null)
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throw new ArgumentNullException ("image");
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g.DrawImage (image, bounds);
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}
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public void DrawParentBackground (IDeviceContext dc, Rectangle bounds, Control childControl)
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{
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if (dc == null)
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throw new ArgumentNullException ("dc");
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last_hresult = VisualStyles.UxThemeDrawThemeParentBackground (dc, bounds, childControl);
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}
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public void DrawText (IDeviceContext dc, Rectangle bounds, string textToDraw, bool drawDisabled, TextFormatFlags flags)
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{
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if (dc == null)
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throw new ArgumentNullException ("dc");
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last_hresult = VisualStyles.UxThemeDrawThemeText (theme, dc, this.part, this.state, textToDraw, flags, bounds);
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}
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public void DrawText (IDeviceContext dc, Rectangle bounds, string textToDraw, bool drawDisabled)
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{
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this.DrawText (dc, bounds, textToDraw, drawDisabled, TextFormatFlags.Default);
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}
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public void DrawText (IDeviceContext dc, Rectangle bounds, string textToDraw)
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{
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this.DrawText (dc, bounds, textToDraw, false, TextFormatFlags.Default);
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}
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public Rectangle GetBackgroundContentRectangle (IDeviceContext dc, Rectangle bounds)
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{
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if (dc == null)
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throw new ArgumentNullException ("dc");
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Rectangle result;
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last_hresult = VisualStyles.UxThemeGetThemeBackgroundContentRect (theme, dc, this.part, this.state, bounds, out result);
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return result;
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}
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public Rectangle GetBackgroundExtent (IDeviceContext dc, Rectangle contentBounds)
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{
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if (dc == null)
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throw new ArgumentNullException ("dc");
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Rectangle result;
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last_hresult = VisualStyles.UxThemeGetThemeBackgroundExtent (theme, dc, this.part, this.state, contentBounds, out result);
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return result;
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}
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[System.Security.SuppressUnmanagedCodeSecurity]
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public Region GetBackgroundRegion (IDeviceContext dc, Rectangle bounds)
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{
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if (dc == null)
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throw new ArgumentNullException ("dc");
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Region result;
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last_hresult = VisualStyles.UxThemeGetThemeBackgroundRegion (theme, dc, this.part, this.state, bounds, out result);
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return result;
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}
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public bool GetBoolean (BooleanProperty prop)
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{
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if (!Enum.IsDefined (typeof (BooleanProperty), prop))
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throw new System.ComponentModel.InvalidEnumArgumentException ("prop", (int)prop, typeof (BooleanProperty));
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bool result;
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last_hresult = VisualStyles.UxThemeGetThemeBool (theme, this.part, this.state, prop, out result);
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return result;
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}
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public Color GetColor (ColorProperty prop)
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{
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if (!Enum.IsDefined (typeof (ColorProperty), prop))
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throw new System.ComponentModel.InvalidEnumArgumentException ("prop", (int)prop, typeof (ColorProperty));
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Color result;
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last_hresult = VisualStyles.UxThemeGetThemeColor (theme, this.part, this.state, prop, out result);
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return result;
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}
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public int GetEnumValue (EnumProperty prop)
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{
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if (!Enum.IsDefined (typeof (EnumProperty), prop))
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throw new System.ComponentModel.InvalidEnumArgumentException ("prop", (int)prop, typeof (EnumProperty));
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int result;
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last_hresult = VisualStyles.UxThemeGetThemeEnumValue (theme, this.part, this.state, prop, out result);
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return result;
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}
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public string GetFilename (FilenameProperty prop)
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{
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if (!Enum.IsDefined (typeof (FilenameProperty), prop))
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throw new System.ComponentModel.InvalidEnumArgumentException ("prop", (int)prop, typeof (FilenameProperty));
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string result;
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last_hresult = VisualStyles.UxThemeGetThemeFilename (theme, this.part, this.state, prop, out result);
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return result;
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}
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[MonoTODO(@"I can't get MS's to return anything but null, so I can't really get this one right")]
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public Font GetFont (IDeviceContext dc, FontProperty prop)
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{
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throw new NotImplementedException();
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//if (dc == null)
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// throw new ArgumentNullException ("dc");
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//if (!Enum.IsDefined (typeof (FontProperty), prop))
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// throw new System.ComponentModel.InvalidEnumArgumentException ("prop", (int)prop, typeof (FontProperty));
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//UXTheme.LOGFONT lf = new UXTheme.LOGFONT();
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//UXTheme.GetThemeFont (theme, dc.GetHdc (), this.part, this.state, (int)prop, out lf);
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//IntPtr fontPtr = UXTheme.CreateFontIndirect(lf);
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//dc.ReleaseHdc();
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//return Font.FromLogFont(lf);
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//return null;
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}
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public int GetInteger (IntegerProperty prop)
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{
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if (!Enum.IsDefined (typeof (IntegerProperty), prop))
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throw new System.ComponentModel.InvalidEnumArgumentException ("prop", (int)prop, typeof (IntegerProperty));
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int result;
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last_hresult = VisualStyles.UxThemeGetThemeInt (theme, this.part, this.state, prop, out result);
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return result;
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}
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[MonoTODO(@"MS's causes a PInvokeStackUnbalance on me, so this is not verified against MS.")]
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public Padding GetMargins (IDeviceContext dc, MarginProperty prop)
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{
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if (dc == null)
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throw new ArgumentNullException ("dc");
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if (!Enum.IsDefined (typeof (MarginProperty), prop))
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throw new System.ComponentModel.InvalidEnumArgumentException ("prop", (int)prop, typeof (MarginProperty));
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Padding result;
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last_hresult = VisualStyles.UxThemeGetThemeMargins (theme, dc, this.part, this.state, prop, out result);
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return result;
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}
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public Size GetPartSize (IDeviceContext dc, Rectangle bounds, ThemeSizeType type)
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{
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if (dc == null)
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throw new ArgumentNullException ("dc");
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if (!Enum.IsDefined (typeof (ThemeSizeType), type))
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throw new System.ComponentModel.InvalidEnumArgumentException ("prop", (int)type, typeof (ThemeSizeType));
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Size result;
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last_hresult = VisualStyles.UxThemeGetThemePartSize (theme, dc, this.part, this.state, bounds, type, out result);
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return result;
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}
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public Size GetPartSize (IDeviceContext dc, ThemeSizeType type)
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{
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if (dc == null)
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throw new ArgumentNullException ("dc");
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if (!Enum.IsDefined (typeof (ThemeSizeType), type))
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throw new System.ComponentModel.InvalidEnumArgumentException ("prop", (int)type, typeof (ThemeSizeType));
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Size result;
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last_hresult = VisualStyles.UxThemeGetThemePartSize (theme, dc, this.part, this.state, type, out result);
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return result;
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}
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public Point GetPoint (PointProperty prop)
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{
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if (!Enum.IsDefined (typeof (PointProperty), prop))
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throw new System.ComponentModel.InvalidEnumArgumentException ("prop", (int)prop, typeof (PointProperty));
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Point result;
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last_hresult = VisualStyles.UxThemeGetThemePosition (theme, this.part, this.state, prop, out result);
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return result;
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}
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[MonoTODO(@"Can't find any values that return anything on MS to test against")]
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public string GetString (StringProperty prop)
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{
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if (!Enum.IsDefined (typeof (StringProperty), prop))
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throw new System.ComponentModel.InvalidEnumArgumentException ("prop", (int)prop, typeof (StringProperty));
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string result;
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last_hresult = VisualStyles.UxThemeGetThemeString (theme, this.part, this.state, prop, out result);
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return result;
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}
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public Rectangle GetTextExtent (IDeviceContext dc, Rectangle bounds, string textToDraw, TextFormatFlags flags)
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{
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if (dc == null)
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throw new ArgumentNullException ("dc");
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Rectangle result;
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last_hresult = VisualStyles.UxThemeGetThemeTextExtent (theme, dc, this.part, this.state, textToDraw, flags, bounds, out result);
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return result;
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}
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public Rectangle GetTextExtent (IDeviceContext dc, string textToDraw, TextFormatFlags flags)
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{
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if (dc == null)
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throw new ArgumentNullException ("dc");
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Rectangle result;
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last_hresult = VisualStyles.UxThemeGetThemeTextExtent (theme, dc, this.part, this.state, textToDraw, flags, out result);
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return result;
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}
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public TextMetrics GetTextMetrics (IDeviceContext dc)
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{
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if (dc == null)
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throw new ArgumentNullException ("dc", "dc cannot be null.");
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TextMetrics result;
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last_hresult = VisualStyles.UxThemeGetThemeTextMetrics (theme, dc, this.part, this.state, out result);
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return result;
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}
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public HitTestCode HitTestBackground (IDeviceContext dc, Rectangle backgroundRectangle, IntPtr hRgn, Point pt, HitTestOptions options)
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{
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if (dc == null)
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throw new ArgumentNullException ("dc");
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HitTestCode result;
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last_hresult = VisualStyles.UxThemeHitTestThemeBackground(theme, dc, this.part, this.state, options, backgroundRectangle, hRgn, pt, out result);
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return result;
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}
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public HitTestCode HitTestBackground (Graphics g, Rectangle backgroundRectangle, Region region, Point pt, HitTestOptions options)
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{
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if (g == null)
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throw new ArgumentNullException ("g");
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IntPtr hRgn = region.GetHrgn(g);
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return this.HitTestBackground(g, backgroundRectangle, hRgn, pt, options);
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}
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public HitTestCode HitTestBackground (IDeviceContext dc, Rectangle backgroundRectangle, Point pt, HitTestOptions options)
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{
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return this.HitTestBackground (dc, backgroundRectangle, IntPtr.Zero, pt, options);
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}
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public bool IsBackgroundPartiallyTransparent ()
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{
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return VisualStyles.UxThemeIsThemeBackgroundPartiallyTransparent (theme, this.part, this.state);
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}
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public void SetParameters (string className, int part, int state)
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{
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if (theme != IntPtr.Zero)
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last_hresult = VisualStyles.UxThemeCloseThemeData (theme);
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if (!IsSupported)
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throw new InvalidOperationException ("Visual Styles are not enabled.");
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this.class_name = className;
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this.part = part;
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this.state = state;
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theme = VisualStyles.UxThemeOpenThemeData (IntPtr.Zero, this.class_name);
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if (IsElementKnownToBeSupported (className, part, state))
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return;
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if (theme == IntPtr.Zero || !VisualStyles.UxThemeIsThemePartDefined (theme, this.part))
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throw new ArgumentException ("This element is not supported by the current visual style.");
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}
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public void SetParameters (VisualStyleElement element)
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{
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this.SetParameters (element.ClassName, element.Part, element.State);
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}
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#endregion
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#region Private Properties
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internal static IVisualStyles VisualStyles {
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get { return VisualStylesEngine.Instance; }
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}
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#endregion
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#region Private Instance Methods
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internal void DrawBackgroundExcludingArea (IDeviceContext dc, Rectangle bounds, Rectangle excludedArea)
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{
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VisualStyles.VisualStyleRendererDrawBackgroundExcludingArea (theme, dc, part, state, bounds, excludedArea);
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}
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#endregion
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#region Private Static Methods
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private static bool IsElementKnownToBeSupported (string className, int part, int state)
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{
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return className == "STATUS" && part == 0 && state == 0;
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}
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#endregion
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#region Private Classes
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private class ThemeHandleManager
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{
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public VisualStyleRenderer VisualStyleRenderer;
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~ThemeHandleManager ()
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{
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if (VisualStyleRenderer.theme == IntPtr.Zero)
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return;
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VisualStyles.UxThemeCloseThemeData (VisualStyleRenderer.theme);
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}
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}
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#endregion
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}
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}
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