mcs/class/Managed.Windows.Forms/System.Windows.Forms/X11DesktopColors.cs

   1 // Permission is hereby granted, free of charge, to any person obtaining
   2 // a copy of this software and associated documentation files (the
   3 // "Software"), to deal in the Software without restriction, including
   4 // without limitation the rights to use, copy, modify, merge, publish,
   5 // distribute, sublicense, and/or sell copies of the Software, and to
   6 // permit persons to whom the Software is furnished to do so, subject to
   7 // the following conditions:
   8 //
   9 // The above copyright notice and this permission notice shall be
  10 // included in all copies or substantial portions of the Software.
  11 //
  12 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  13 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  14 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  15 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  16 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  17 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  18 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  19 //
  20 // Copyright (c) 2005 Novell, Inc. (http://www.novell.com)
  21 //
  22 // Authors:
  23 //      Peter Dennis Bartok     (pbartok@novell.com)
  24 //
  25 //
  26
  27 using System.Drawing;
  28 using System.Runtime.InteropServices;
  29
  30 namespace System.Windows.Forms {
  31         internal class X11DesktopColors {
  32                 #region Structs & Enums
  33                 [StructLayout(LayoutKind.Sequential)]
  34                 internal struct GdkColorStruct {
  35                         internal int pixel;
  36                         internal short red;
  37                         internal short green;
  38                         internal short blue;
  39                 }
  40
  41                 [StructLayout(LayoutKind.Sequential)]
  42                 internal struct GtkStyleStruct {
  43                         [MarshalAs(System.Runtime.InteropServices.UnmanagedType.ByValArray, SizeConst=12)]
  44                         internal byte[] obj; /* GObject is 12 bytes*/
  45                         [MarshalAs(System.Runtime.InteropServices.UnmanagedType.ByValArray, SizeConst=5)]
  46                         internal GdkColorStruct[] fg;
  47                         [MarshalAs(System.Runtime.InteropServices.UnmanagedType.ByValArray, SizeConst=5)]
  48                         internal GdkColorStruct[] bg;
  49                         [MarshalAs(System.Runtime.InteropServices.UnmanagedType.ByValArray, SizeConst=5)]
  50                         internal GdkColorStruct[] light;
  51                         [MarshalAs(System.Runtime.InteropServices.UnmanagedType.ByValArray, SizeConst=5)]
  52                         internal GdkColorStruct[] dark;
  53                         [MarshalAs(System.Runtime.InteropServices.UnmanagedType.ByValArray, SizeConst=5)]
  54                         internal GdkColorStruct[] mid;
  55                         [MarshalAs(System.Runtime.InteropServices.UnmanagedType.ByValArray, SizeConst=5)]
  56                         internal GdkColorStruct[] text;
  57                         [MarshalAs(System.Runtime.InteropServices.UnmanagedType.ByValArray, SizeConst=5)]
  58                         internal GdkColorStruct[] baseclr;
  59                         [MarshalAs(System.Runtime.InteropServices.UnmanagedType.ByValArray, SizeConst=5)]
  60                         internal GdkColorStruct[] text_aa;              /* Halfway between text/base */
  61
  62                         internal GdkColorStruct black;
  63                         internal GdkColorStruct white;
  64
  65                         /* TODO: There is more stuff that we will add when we need it*/
  66                 }
  67
  68                 private enum Desktop {
  69                         Gtk,
  70                         KDE,
  71                         Unknown
  72                 }
  73                 #endregion      // Structs & Enums
  74
  75                 #region Local Variables
  76                 static private Desktop          desktop;
  77                 #endregion      // Local Variables
  78
  79                 #region Constructors
  80                 static X11DesktopColors() {
  81                         // FIXME - figure out what desktop manager we're using; for now we hardcode gtk
  82                         desktop = Desktop.Gtk;
  83
  84                         switch(desktop) {
  85                                 case Desktop.Gtk: {
  86                                         //IntPtr                dispmgr;
  87                                         //IntPtr                gdkdisplay;
  88                                         IntPtr          widget;
  89                                         IntPtr          style_ptr;
  90                                         GtkStyleStruct  style;
  91                                         int             argc = 0;
  92                                         string          argv = "";
  93
  94                                         try {
  95                                                 gtk_init_check (out argc, argv);
  96                                                 //dispmgr =  gdk_display_manager_get ();
  97                                                 //gdkdisplay =  gdk_display_manager_get_default_display (dispmgr);
  98                                                 gtk_init_check (out argc, argv);
  99
 100                                                 widget = gtk_invisible_new ();
 101                                                 gtk_widget_ensure_style (widget);
 102                                                 style_ptr = gtk_widget_get_style (widget);
 103
 104                                                 style = (GtkStyleStruct) Marshal.PtrToStructure (style_ptr, typeof (GtkStyleStruct));
 105
 106                                                 ThemeEngine.Current.ColorControl = ColorFromGdkColor (style.bg[0]);
 107                                                 ThemeEngine.Current.ColorControlText = ColorFromGdkColor (style.fg[0]);
 108                                                 ThemeEngine.Current.ColorControlDark = ColorFromGdkColor (style.dark[0]);
 109                                                 ThemeEngine.Current.ColorControlLight = ColorFromGdkColor (style.light[0]);
 110                                                 ThemeEngine.Current.ColorControlLightLight = ControlPaint.Light(ColorFromGdkColor (style.light[0]));
 111                                                 ThemeEngine.Current.ColorControlDarkDark = ControlPaint.Dark(ColorFromGdkColor (style.dark[0]));
 112
 113                                                 widget = gtk_menu_new ();
 114                                                 gtk_widget_ensure_style (widget);
 115                                                 style_ptr = gtk_widget_get_style (widget);
 116
 117                                                 style = (GtkStyleStruct) Marshal.PtrToStructure (style_ptr, typeof (GtkStyleStruct));
 118
 119                                                 ThemeEngine.Current.ColorMenu = ColorFromGdkColor (style.bg [0]);
 120                                                 ThemeEngine.Current.ColorMenuText = ColorFromGdkColor (style.text [0]);
 121                                                 Console.WriteLine("Gtk colorscheme read");
 122                                         }
 123
 124                                         catch (DllNotFoundException) {
 125                                                 Console.WriteLine("Gtk not found (missing LD_LIBRARY_PATH to libgtk-x11-2.0.so?), using built-in colorscheme");
 126                                         }
 127
 128                                         catch {
 129                                                 Console.WriteLine("Gtk colorscheme read failure, using built-in colorscheme");
 130                                         }
 131                                         break;
 132                                 }
 133
 134                                 default: {
 135                                         Console.WriteLine("Unknown destop manager, using default colors");
 136                                         break;
 137                                 }
 138                         }
 139                 }
 140                 #endregion      // Constructors
 141
 142                 #region Properties
 143                 #endregion      // Properties
 144
 145                 #region Methods
 146                 static internal void Initialize() {
 147                         // Do nothing; all is done in our static ctor
 148                 }
 149
 150                 private static Color ColorFromGdkColor (GdkColorStruct gtkcolor) {
 151                         return Color.FromArgb (255,
 152                                 (gtkcolor.red >> 8)  & 0xff,
 153                                 (gtkcolor.green  >> 8) & 0xff,
 154                                 (gtkcolor.blue >> 8) & 0xff );
 155                 }
 156
 157                 #endregion      // Methods
 158
 159                 #region DllImports
 160                 [DllImport("libgtk-x11-2.0.so")]
 161                 static extern bool gtk_init_check (out int argc, string argv);
 162
 163                 [DllImport("libgdk-x11-2.0.so")]
 164                 internal static extern IntPtr gdk_display_manager_get ();
 165
 166                 [DllImport("libgdk-x11-2.0.so")]
 167                 internal static extern IntPtr gdk_display_manager_get_default_display (IntPtr display_manager);
 168
 169                 [DllImport("libgtk-x11-2.0.so")]
 170                 static extern IntPtr gtk_invisible_new ();
 171
 172                 [DllImport("libgtk-x11-2.0.so")]
 173                 static extern IntPtr gtk_menu_new ();
 174
 175                 [DllImport("libgtk-x11-2.0.so")]
 176                 static extern IntPtr gtk_menu_item_new_with_label (string label);
 177
 178                 [DllImport("libgtk-x11-2.0.so")]
 179                 static extern void gtk_widget_ensure_style (IntPtr raw);
 180
 181                 [DllImport("libgtk-x11-2.0.so")]
 182                 static extern IntPtr gtk_widget_get_style (IntPtr raw);
 183                 #endregion      // DllImports
 184         }
 185 }