mcs/class/Managed.Windows.Forms/System.Windows.Forms/ThemeGtk.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
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   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) 2004-2006 Novell, Inc.
  21 //
  22 // Authors:
  23 //      Jordi Mas i Hernandez, jordi@ximian.com
  24 //      Alexander Olk, alex.olk@googlemail.com
  25 //
  26 //      This is an experimental GTK theme.
  27 //
  28 //      Comments:
  29 //              - For now we would keep all the themes in the same assembly to have
  30 //              handy the internals methods.
  31 //              - We are using Pinovoke for now to access GTK/GDK to avoid adding
  32 //              gtk-sharp as a SWF dependency
  33 //              - The ThemeGtk comes from ThemeWin32Classic, we use it as the default
  34 //              implementation for the methods that we are not taking care of.
  35 //              - When GDK is initialised it opens its own display. There is not way of changing it,
  36 //              then we use that display as SWF display
  37 //              - You can activate this Theme in Linux doing export MONO_THEME=gtk
  38 //              - GTK paints controls into a window not a device context. We should inverstigate if we
  39 //              we can encapsulate a dc in a gtkwindow.
  40
  41
  42 // NOT COMPLETE
  43
  44 // TODO:        - fix position of button focus rectangle
  45 //              - fix TrackBar drawing location
  46
  47
  48 //#define _EXPERIMENTAL_
  49
  50 using System;
  51 using System.Drawing;
  52 using System.Drawing.Drawing2D;
  53 using System.Drawing.Imaging;
  54 using System.Reflection;
  55 using System.Runtime.InteropServices;
  56 using System.IO;
  57
  58 namespace System.Windows.Forms
  59 {
  60         internal class ThemeGtk : ThemeWin32Classic
  61         {
  62                 /* GTK enums */
  63                 internal enum StateType
  64                 {
  65                         Normal,
  66                         Active,
  67                         Prelight,
  68                         Selected,
  69                         Insensitive,
  70                 }
  71
  72                 internal enum ShadowType
  73                 {
  74                         None,
  75                         In,
  76                         Out,
  77                         EtchedIn,
  78                         EtchedOut,
  79                 }
  80
  81                 internal enum ArrowType
  82                 {
  83                         Up,
  84                         Down,
  85                         Left,
  86                         Right,
  87                 }
  88
  89                 /* Structs */
  90                 [StructLayout(LayoutKind.Sequential)]
  91                 internal struct GdkColorStruct
  92                 {
  93                         internal int pixel;
  94                         internal short red;
  95                         internal short green;
  96                         internal short blue;
  97                 }
  98
  99                 [StructLayout(LayoutKind.Sequential)]
 100                 internal struct GObjectStruct {
 101                         public IntPtr Instance;
 102                         public IntPtr ref_count;
 103                         public IntPtr data;
 104                 }
 105
 106
 107                 [StructLayout(LayoutKind.Sequential)]
 108                 internal struct GtkStyleStruct
 109                 {
 110                         internal GObjectStruct obj;
 111                         [MarshalAs(System.Runtime.InteropServices.UnmanagedType.ByValArray, SizeConst=5)]
 112                         internal GdkColorStruct[] fg;
 113                         [MarshalAs(System.Runtime.InteropServices.UnmanagedType.ByValArray, SizeConst=5)]
 114                         internal GdkColorStruct[] bg;
 115                         [MarshalAs(System.Runtime.InteropServices.UnmanagedType.ByValArray, SizeConst=5)]
 116                         internal GdkColorStruct[] light;
 117                         [MarshalAs(System.Runtime.InteropServices.UnmanagedType.ByValArray, SizeConst=5)]
 118                         internal GdkColorStruct[] dark;
 119                         [MarshalAs(System.Runtime.InteropServices.UnmanagedType.ByValArray, SizeConst=5)]
 120                         internal GdkColorStruct[] mid;
 121                         [MarshalAs(System.Runtime.InteropServices.UnmanagedType.ByValArray, SizeConst=5)]
 122                         internal GdkColorStruct[] text;
 123                         [MarshalAs(System.Runtime.InteropServices.UnmanagedType.ByValArray, SizeConst=5)]
 124                         internal GdkColorStruct[] baseclr;
 125                         [MarshalAs(System.Runtime.InteropServices.UnmanagedType.ByValArray, SizeConst=5)]
 126                         internal GdkColorStruct[] text_aa;              /* Halfway between text/base */
 127
 128                         internal GdkColorStruct black;
 129                         internal GdkColorStruct white;
 130
 131                         /* TODO: There is more stuff that we will add when we need it*/
 132                 }
 133
 134                 /* GDK imports */
 135                 [DllImport("libgdk-x11-2.0.so")]
 136                 internal static extern IntPtr gdk_display_manager_get ();
 137
 138                 [DllImport("libgdk-x11-2.0.so")]
 139                 internal static extern IntPtr gdk_display_manager_get_default_display (IntPtr display_manager);
 140
 141                 [DllImport("libgdk-x11-2.0.so")]
 142                 internal static extern void gdk_display_manager_set_default_display (IntPtr display_manager, IntPtr display);
 143
 144                 [DllImport("libgdk-x11-2.0.so")]
 145                 internal static extern IntPtr gdk_x11_display_get_xdisplay (IntPtr display);
 146
 147                 [DllImport("libgdk-x11-2.0.so")]
 148                 static extern IntPtr gdk_window_foreign_new_for_display (IntPtr display, uint anid);
 149
 150                 [DllImport("libgdk-x11-2.0.so")]
 151                 static extern bool gdk_init_check(IntPtr argc, IntPtr argv);
 152
 153                 //[DllImport("libgdk-x11-2.0.so")]
 154                 //static extern IntPtr gdk_pixmap_new (IntPtr drawable, int width, int height, int depth);
 155
 156                 //[DllImport("libgdk-x11-2.0.so")]
 157                 //static extern IntPtr gdk_pixbuf_get_from_drawable (IntPtr dest, IntPtr drawable_src, IntPtr cmap,
 158                 //                                                 int src_x, int src_y, int dest_x, int dest_y, int width, int height);
 159
 160                 //[DllImport("libgdk-x11-2.0.so")]
 161                 //static extern bool gdk_pixbuf_save_to_buffer (IntPtr pixbuf, out IntPtr buffer, out UIntPtr buffer_size, string type, out IntPtr error, IntPtr option_dummy);
 162
 163                 //[DllImport("libgdk-x11-2.0.so")]
 164                 //static extern IntPtr gdk_drawable_get_colormap (IntPtr drawable);
 165
 166                 //[DllImport("libgdk-x11-2.0.so")]
 167                 //static extern IntPtr gdk_colormap_get_system ();
 168
 169                 //[DllImport("libgdk-x11-2.0.so")]
 170                 //static extern IntPtr gdk_pixbuf_new (int colorspace, bool has_alpha, int bits_per_sample, int width, int height);
 171
 172                 //[DllImport("libgdk-x11-2.0.so")]
 173                 //static extern IntPtr gdk_gc_new (IntPtr drawable);
 174
 175                 /* glib imports*/
 176                 //[DllImport("libglib-2.0.so")]
 177                 //static extern void g_free (IntPtr mem);
 178
 179                 //[DllImport("libgobject-2.0.so")]
 180                 //static extern void g_object_unref (IntPtr nativeObject);
 181
 182                 /* GTK imports */
 183                 [DllImport("libgtk-x11-2.0.so")]
 184                 static extern bool gtk_init_check (IntPtr argc, IntPtr argv);
 185
 186                 [DllImport("libgtk-x11-2.0.so")]
 187                 static extern IntPtr gtk_adjustment_new (double value, double lower, double upper, double step_increment, double page_increment, double page_size);
 188
 189                 [DllImport("libgtk-x11-2.0.so")]
 190                 static extern IntPtr gtk_rc_get_style (IntPtr widget);
 191
 192                 [DllImport("libgtk-x11-2.0.so")]
 193                 static extern IntPtr gtk_vscrollbar_new(IntPtr adjustment);
 194
 195                 [DllImport("libgtk-x11-2.0.so")]
 196                 static extern IntPtr gtk_hscrollbar_new(IntPtr adjustment);
 197
 198                 [DllImport("libgtk-x11-2.0.so")]
 199                 static extern IntPtr gtk_style_attach (IntPtr raw, IntPtr window);
 200
 201                 //[DllImport("libgtk-x11-2.0.so")]
 202                 //static extern IntPtr gtk_rc_style_new ();
 203
 204                 [DllImport("libgtk-x11-2.0.so")]
 205                 static extern IntPtr gtk_invisible_new ();
 206
 207                 [DllImport("libgtk-x11-2.0.so")]
 208                 static extern void gtk_widget_ensure_style (IntPtr raw);
 209
 210                 [DllImport("libgtk-x11-2.0.so")]
 211                 static extern IntPtr gtk_widget_get_style (IntPtr raw);
 212
 213                 //[DllImport("libgtk-x11-2.0.so")]
 214                 //static extern void gtk_style_detach (IntPtr raw);
 215
 216                 [DllImport("libgtk-x11-2.0.so")]
 217                 static extern IntPtr gtk_button_new ();
 218
 219                 [DllImport("libgtk-x11-2.0.so")]
 220                 static extern IntPtr gtk_progress_bar_new ();
 221
 222                 [DllImport("libgtk-x11-2.0.so")]
 223                 static extern IntPtr gtk_radio_button_new (IntPtr group);
 224
 225                 [DllImport("libgtk-x11-2.0.so")]
 226                 static extern IntPtr gtk_check_button_new ();
 227
 228                 [DllImport("libgtk-x11-2.0.so")]
 229                 static extern IntPtr gtk_hscale_new (IntPtr adjustment);
 230
 231                 [DllImport("libgtk-x11-2.0.so")]
 232                 static extern IntPtr gtk_vscale_new (IntPtr adjustment);
 233
 234                 [DllImport("libgtk-x11-2.0.so")]
 235                 static extern void gtk_range_set_range (IntPtr range, double min, double max);
 236
 237                 [DllImport("libgtk-x11-2.0.so")]
 238                 static extern void gtk_range_set_value (IntPtr range, double value);
 239
 240                 /* GTK Drawing */
 241                 //[DllImport("libgtk-x11-2.0.so")]
 242                 //static extern void gtk_paint_handle (IntPtr style, IntPtr window, int state_type, int shadow_type, IntPtr area, IntPtr widget, string detail, int x, int y, int width, int height, int orientation);
 243
 244                 [DllImport("libgtk-x11-2.0.so")]
 245                 static extern void gtk_paint_arrow (IntPtr style, IntPtr window, int state_type, int shadow_type,
 246                                                     IntPtr area, IntPtr widget, string detail, int arrow_type, bool fill, int x, int y, int width, int height);
 247
 248                 [DllImport("libgtk-x11-2.0.so")]
 249                 static extern void gtk_paint_slider (IntPtr style, IntPtr window, int state_type, int shadow_type,
 250                                                      IntPtr area, IntPtr widget, string detail, int x, int y, int width, int height, int orientation);
 251
 252                 [DllImport("libgtk-x11-2.0.so")]
 253                 static extern void gtk_paint_box (IntPtr style, IntPtr window, int state_type, int shadow_type,
 254                                                   IntPtr area, IntPtr widget, string detail, int x, int y, int width, int height);
 255
 256                 [DllImport("libgtk-x11-2.0.so")]
 257                 static extern void gtk_paint_flat_box (IntPtr style, IntPtr window, int state_type, int shadow_type,
 258                                                        IntPtr area, IntPtr widget, string detail, int x, int y, int width, int height);
 259
 260                 //[DllImport("libgtk-x11-2.0.so")]
 261                 //static extern void gtk_paint_hline(IntPtr style, IntPtr window, int state_type, IntPtr area, IntPtr widget, string detail, int x1, int x2, int y);
 262
 263                 //[DllImport("libgtk-x11-2.0.so")]
 264                 //static extern void gtk_paint_vline(IntPtr style, IntPtr window, int state_type, IntPtr area, IntPtr widget, string detail, int y1, int y2, int x);
 265
 266                 [DllImport("libgtk-x11-2.0.so")]
 267                 static extern void gtk_paint_check(IntPtr style, IntPtr window, int state_type, int shadow_type, IntPtr area, IntPtr widget, string detail, int x, int y, int width, int height);
 268
 269                 [DllImport("libgtk-x11-2.0.so")]
 270                 static extern void gtk_paint_focus(IntPtr style, IntPtr window, int state_type, IntPtr area, IntPtr widget, string detail, int x, int y, int width, int height);
 271
 272                 [DllImport("libgtk-x11-2.0.so")]
 273                 static extern void gtk_widget_size_allocate (IntPtr widget, ref Rectangle allocation);
 274
 275                 [DllImport("libgtk-x11-2.0.so")]
 276                 static extern void gtk_paint_option (IntPtr style, IntPtr window, int state_type, int shadow_type, IntPtr area, IntPtr widget, string detail, int x, int y, int width, int height);
 277
 278                 [DllImport("libgtk-x11-2.0.so")]
 279                 static extern void gtk_widget_grab_focus (IntPtr widget);
 280
 281                 /* Data */
 282                 static protected IntPtr dispmgr;
 283                 static protected IntPtr gdkdisplay;
 284                 static protected IntPtr widget;
 285                 static protected IntPtr global_style;
 286
 287                 #if _EXPERIMENTAL_
 288                 static protected IntPtr global_color_map = IntPtr.Zero;
 289                 #endif
 290
 291                 static protected IntPtr global_gtk_button = IntPtr.Zero;
 292                 static protected IntPtr global_gtk_button_style = IntPtr.Zero;
 293
 294                 static protected IntPtr global_gtk_vscrollbar = IntPtr.Zero;
 295                 static protected IntPtr global_gtk_vscrollbar_style = IntPtr.Zero;
 296
 297                 static protected IntPtr global_gtk_hscrollbar = IntPtr.Zero;
 298                 static protected IntPtr global_gtk_hscrollbar_style = IntPtr.Zero;
 299
 300                 static protected IntPtr global_gtk_progress_bar = IntPtr.Zero;
 301                 static protected IntPtr global_gtk_progress_bar_style = IntPtr.Zero;
 302
 303                 static protected IntPtr global_gtk_radio_button = IntPtr.Zero;
 304                 static protected IntPtr global_gtk_radio_button_style = IntPtr.Zero;
 305
 306                 static protected IntPtr global_gtk_check_button = IntPtr.Zero;
 307                 static protected IntPtr global_gtk_check_button_style = IntPtr.Zero;
 308
 309                 static protected IntPtr global_gtk_hscale = IntPtr.Zero;
 310                 static protected IntPtr global_gtk_hscale_style = IntPtr.Zero;
 311
 312                 static protected IntPtr global_gtk_vscale = IntPtr.Zero;
 313                 static protected IntPtr global_gtk_vscale_style = IntPtr.Zero;
 314
 315                 static protected IntPtr current_gdk_drawable = IntPtr.Zero;
 316                 static protected IntPtr current_style = IntPtr.Zero;
 317                 static protected IntPtr current_widget = IntPtr.Zero;
 318
 319                 public static void InitGtk ()
 320                 {
 321                         Console.WriteLine ("ThemeGtk Init");
 322
 323                         gdk_init_check (IntPtr.Zero, IntPtr.Zero);
 324
 325                         dispmgr =  gdk_display_manager_get ();
 326                         gdkdisplay =  gdk_display_manager_get_default_display (dispmgr);
 327                         gtk_init_check (IntPtr.Zero, IntPtr.Zero);
 328
 329                         widget = gtk_invisible_new ();
 330                         gtk_widget_ensure_style (widget);
 331                         global_style = gtk_widget_get_style (widget);
 332
 333                         XplatUIX11.GetInstance().SetDisplay (gdk_x11_display_get_xdisplay (gdkdisplay));
 334
 335                         global_gtk_button = gtk_button_new();
 336                         gtk_widget_ensure_style (global_gtk_button);
 337                         global_gtk_button_style = gtk_rc_get_style (global_gtk_button);
 338
 339                         IntPtr adj = gtk_adjustment_new (0, 0, 0, 0, 0, 0);
 340                         global_gtk_vscrollbar = gtk_vscrollbar_new (adj);
 341                         gtk_widget_ensure_style (global_gtk_vscrollbar);
 342                         global_gtk_vscrollbar_style = gtk_rc_get_style (global_gtk_vscrollbar);
 343
 344                         global_gtk_hscrollbar = gtk_hscrollbar_new (adj);
 345                         gtk_widget_ensure_style (global_gtk_hscrollbar);
 346                         global_gtk_hscrollbar_style = gtk_rc_get_style (global_gtk_hscrollbar);
 347
 348                         global_gtk_progress_bar = gtk_progress_bar_new ();
 349                         gtk_widget_ensure_style (global_gtk_progress_bar);
 350                         global_gtk_progress_bar_style = gtk_rc_get_style (global_gtk_progress_bar);
 351
 352                         global_gtk_radio_button = gtk_radio_button_new (IntPtr.Zero);
 353                         gtk_widget_ensure_style (global_gtk_radio_button);
 354                         global_gtk_radio_button_style = gtk_rc_get_style (global_gtk_radio_button);
 355
 356                         global_gtk_check_button = gtk_check_button_new ();
 357                         gtk_widget_ensure_style (global_gtk_check_button);
 358                         global_gtk_check_button_style = gtk_rc_get_style (global_gtk_check_button);
 359
 360                         global_gtk_hscale = gtk_hscale_new (adj);
 361                         gtk_widget_ensure_style (global_gtk_hscale);
 362                         global_gtk_hscale_style = gtk_rc_get_style (global_gtk_hscale);
 363
 364                         global_gtk_vscale = gtk_vscale_new (adj);
 365                         gtk_widget_ensure_style (global_gtk_vscale);
 366                         global_gtk_vscale_style = gtk_rc_get_style (global_gtk_vscale);
 367
 368                         #if _EXPERIMENTAL_
 369                         global_color_map = gdk_colormap_get_system ();
 370                         #endif
 371                 }
 372
 373                 public void LoadSysDefaultColors ()
 374                 {
 375                         GtkStyleStruct style_struct;
 376
 377                         style_struct = (GtkStyleStruct) Marshal.PtrToStructure (global_style, typeof (GtkStyleStruct));
 378                         defaultWindowBackColor = ColorFromGdkColor (style_struct.bg[0]);
 379                         defaultWindowForeColor = ColorFromGdkColor (style_struct.fg[0]);
 380                 }
 381
 382                 public ThemeGtk () : base ()
 383                 {
 384                         Console.WriteLine ("ThemeGtk constructor");
 385                         InitGtk ();
 386
 387                         LoadSysDefaultColors ();
 388                 }
 389
 390                 public override bool DoubleBufferingSupported {
 391                         #if _EXPERIMENTAL_
 392                         get {return true; }
 393                         #else
 394                         get {return false; }
 395                         #endif
 396                 }
 397
 398                 private void SetDrawableAndStyle (Control control)
 399                 {
 400                         #if _EXPERIMENTAL_
 401                         if (current_gdk_drawable != IntPtr.Zero) {
 402                                 g_object_unref (current_gdk_drawable);
 403                                 current_gdk_drawable = IntPtr.Zero;
 404                         }
 405                         current_gdk_drawable = gdk_pixmap_new (IntPtr.Zero, control.ClientRectangle.Width, control.ClientRectangle.Height, 24);
 406                         #else
 407                         current_gdk_drawable = gdk_window_foreign_new_for_display (gdkdisplay, (uint) control.Handle);
 408                         #endif
 409
 410                         IntPtr tmp_style = IntPtr.Zero;
 411
 412                         if (control is ButtonBase) {
 413                                 tmp_style = global_gtk_button_style;
 414                                 current_widget = global_gtk_button;
 415                         } else
 416                         if (control is ScrollBar) {
 417                                 ScrollBar bar = control as ScrollBar;
 418                                 if (bar.vert) {
 419                                         tmp_style = global_gtk_vscrollbar_style;
 420                                         current_widget = global_gtk_vscrollbar;
 421                                 } else {
 422                                         tmp_style = global_gtk_hscrollbar_style;
 423                                         current_widget = global_gtk_hscrollbar;
 424                                 }
 425                         } else
 426                         if (control is ProgressBar) {
 427                                 tmp_style = global_gtk_progress_bar_style;
 428                                 current_widget = global_gtk_progress_bar;
 429                         } else
 430                         if (control is RadioButton) {
 431                                 tmp_style = global_gtk_radio_button_style;
 432                                 current_widget = global_gtk_radio_button;
 433                         } else
 434                         if (control is CheckBox) {
 435                                 tmp_style = global_gtk_check_button_style;
 436                                 current_widget = global_gtk_check_button;
 437                         } else
 438                         if (control is TrackBar) {
 439                                 TrackBar bar = control as TrackBar;
 440                                 if (bar.Orientation == Orientation.Vertical) {
 441                                         tmp_style = global_gtk_vscale_style;
 442                                         current_widget = global_gtk_vscale;
 443                                 } else {
 444                                         tmp_style = global_gtk_hscale_style;
 445                                         current_widget = global_gtk_hscale;
 446                                 }
 447                         } else
 448                                 tmp_style = global_style;
 449
 450                         current_style = gtk_style_attach (tmp_style, current_gdk_drawable);  // need it
 451                 }
 452
 453                 #if _EXPERIMENTAL_
 454                 private void SetDrawableAndStyle (Rectangle area, Type type, Orientation orientation)
 455                 {
 456                         if (current_gdk_drawable != IntPtr.Zero) {
 457                                 g_object_unref (current_gdk_drawable);
 458                                 current_gdk_drawable = IntPtr.Zero;
 459                         }
 460                         current_gdk_drawable = gdk_pixmap_new (IntPtr.Zero, area.Width, area.Height, 24);
 461
 462                         IntPtr tmp_style = IntPtr.Zero;
 463
 464                         if (type == typeof(ButtonBase)) {
 465                                 tmp_style = global_gtk_button_style;
 466                                 current_widget = global_gtk_button;
 467                         } else
 468                         if (type == typeof(ScrollBar)) {
 469                                 if (orientation == Orientation.Vertical) {
 470                                         tmp_style = global_gtk_vscrollbar_style;
 471                                         current_widget = global_gtk_vscrollbar;
 472                                 } else {
 473                                         tmp_style = global_gtk_hscrollbar_style;
 474                                         current_widget = global_gtk_hscrollbar;
 475                                 }
 476                         } else
 477                         if (type == typeof(ProgressBar)) {
 478                                 tmp_style = global_gtk_progress_bar_style;
 479                                 current_widget = global_gtk_progress_bar;
 480                         } else
 481                         if (type == typeof(RadioButton)) {
 482                                 tmp_style = global_gtk_radio_button_style;
 483                                 current_widget = global_gtk_radio_button;
 484                         } else
 485                         if (type == typeof(CheckBox)) {
 486                                 tmp_style = global_gtk_check_button_style;
 487                                 current_widget = global_gtk_check_button;
 488                         } else
 489                         if (type == typeof(TrackBar)) {
 490                                 if (orientation == Orientation.Vertical) {
 491                                         tmp_style = global_gtk_vscale_style;
 492                                         current_widget = global_gtk_vscale;
 493                                 } else {
 494                                         tmp_style = global_gtk_hscale_style;
 495                                         current_widget = global_gtk_hscale;
 496                                 }
 497                         } else
 498                                 tmp_style = global_style;
 499
 500                         current_style = gtk_style_attach (tmp_style, current_gdk_drawable);  // need it
 501                 }
 502                 #endif
 503
 504                 #if _EXPERIMENTAL_
 505                 private void DrawDrawableToDC (Graphics dc, Control control)
 506                 {
 507                         IntPtr new_pixbuf = gdk_pixbuf_new (0, true, 8, control.ClientRectangle.Width, control.ClientRectangle.Height);
 508
 509                         gdk_pixbuf_get_from_drawable (new_pixbuf,
 510                                                       current_gdk_drawable,
 511                                                       global_color_map,
 512                                                       0,
 513                                                       0,
 514                                                       0,
 515                                                       0,
 516                                                       -1,
 517                                                       -1);
 518
 519                         IntPtr error = IntPtr.Zero;
 520                         IntPtr buffer;
 521                         UIntPtr buffer_size_as_ptr;
 522                         string type = "png";
 523
 524                         bool saved = gdk_pixbuf_save_to_buffer (new_pixbuf, out buffer, out buffer_size_as_ptr, type, out error, IntPtr.Zero);
 525
 526                         if (!saved)
 527                                 return;
 528
 529                         int buffer_size = (int) (uint) buffer_size_as_ptr;
 530                         byte[] result = new byte [buffer_size];
 531                         Marshal.Copy (buffer, result, 0, (int) buffer_size);
 532                         g_free (buffer);
 533                         g_object_unref (new_pixbuf);
 534
 535                         Image image = null;
 536                         using (MemoryStream s = new MemoryStream (result))
 537                                 image = Image.FromStream (s);
 538
 539                         dc.DrawImage (image, control.ClientRectangle);
 540                 }
 541
 542                 private void DrawDrawableToDC (Graphics dc, Rectangle area)
 543                 {
 544                         IntPtr new_pixbuf = gdk_pixbuf_new (0, true, 8, area.Width, area.Height);
 545
 546                         gdk_pixbuf_get_from_drawable (new_pixbuf,
 547                                                       current_gdk_drawable,
 548                                                       global_color_map,
 549                                                       0,
 550                                                       0,
 551                                                       0,
 552                                                       0,
 553                                                       -1,
 554                                                       -1);
 555
 556                         IntPtr error = IntPtr.Zero;
 557                         IntPtr buffer;
 558                         UIntPtr buffer_size_as_ptr;
 559                         string type = "png";
 560
 561                         bool saved = gdk_pixbuf_save_to_buffer (new_pixbuf, out buffer, out buffer_size_as_ptr, type, out error, IntPtr.Zero);
 562
 563                         if (!saved)
 564                                 return;
 565
 566                         int buffer_size = (int) (uint) buffer_size_as_ptr;
 567                         byte[] result = new byte [buffer_size];
 568                         Marshal.Copy (buffer, result, 0, (int) buffer_size);
 569                         g_free (buffer);
 570                         g_object_unref (new_pixbuf);
 571
 572                         Image image = null;
 573                         using (MemoryStream s = new MemoryStream (result))
 574                                 image = Image.FromStream (s);
 575
 576                         dc.DrawImage (image, area);
 577                 }
 578                 #endif
 579
 580                 public override void DrawButtonBase (Graphics dc, Rectangle clip_area, ButtonBase button)
 581                 {
 582                         SetDrawableAndStyle (button);
 583
 584                         // Draw the button: fill rectangle, draw border, etc.
 585                         ButtonBase_DrawButton (button, dc);
 586
 587                         // First, draw the image
 588                         if ((button.image != null) || (button.image_list != null))
 589                                 ButtonBase_DrawImage (button, dc);
 590
 591                         // Draw the focus rectangle
 592                         if (button.has_focus)
 593                                 ButtonBase_DrawFocus (button, dc);
 594
 595                         #if _EXPERIMENTAL_
 596                         DrawDrawableToDC (dc, button);
 597                         #endif
 598
 599                         // Now the text
 600                         if (button.Text != null && button.Text != String.Empty)
 601                                 ButtonBase_DrawText (button, dc);
 602                 }
 603
 604                 protected override void ButtonBase_DrawButton(ButtonBase button, Graphics dc)
 605                 {
 606                         Rectangle buttonRectangle = button.ClientRectangle;
 607
 608                         StateType state_type = StateType.Normal;
 609                         ShadowType shadow_type = button.FlatStyle == FlatStyle.Flat ? ShadowType.In : ShadowType.Out;
 610                         string detail = "buttondefault";
 611
 612                         if (((button is CheckBox) && (((CheckBox)button).check_state == CheckState.Checked)) ||
 613                             ((button is RadioButton) && (((RadioButton)button).check_state == CheckState.Checked))) {
 614                                 state_type = StateType.Active;
 615                                 shadow_type = ShadowType.In;
 616                                 detail = "button";
 617                         } else
 618                         if (!button.is_enabled) {
 619                                 state_type = StateType.Insensitive;
 620                         } else
 621                         if (button.is_pressed) {
 622                                 state_type = StateType.Active;
 623                                 shadow_type = ShadowType.In;
 624                                 detail = "button";
 625                         } else
 626                         if (button.is_entered) {
 627                                 state_type = StateType.Prelight;
 628                         }
 629
 630                         if (button.Focused)
 631                                 gtk_widget_grab_focus (global_gtk_button);
 632
 633                         if (button.FlatStyle == FlatStyle.Flat)
 634                                 gtk_paint_flat_box (current_style,
 635                                                     current_gdk_drawable,
 636                                                     (int) state_type,
 637                                                     (int) shadow_type,
 638                                                     IntPtr.Zero,
 639                                                     global_gtk_button,
 640                                                     detail,
 641                                                     buttonRectangle.X, buttonRectangle.Y,
 642                                                     buttonRectangle.Width, buttonRectangle.Height);
 643                         else
 644                         if (button.FlatStyle != FlatStyle.Popup || (button.FlatStyle == FlatStyle.Popup && button.is_entered))
 645                                 gtk_paint_box (current_style,
 646                                                current_gdk_drawable,
 647                                                (int) state_type,
 648                                                (int) shadow_type,
 649                                                IntPtr.Zero,
 650                                                global_gtk_button,
 651                                                detail,
 652                                                buttonRectangle.X, buttonRectangle.Y,
 653                                                buttonRectangle.Width, buttonRectangle.Height);
 654                 }
 655
 656                 protected override void ButtonBase_DrawFocus (ButtonBase button, Graphics dc)
 657                 {
 658                         if (!button.is_enabled)
 659                                 return;
 660
 661                         Rectangle focus_rect = new Rectangle (button.ClientRectangle.X + 4, button.ClientRectangle.Y + 4, button.ClientRectangle.Width - 9, button.ClientRectangle.Height - 9);
 662
 663                         gtk_widget_grab_focus (global_gtk_button);
 664
 665                         gtk_paint_focus (current_style,
 666                                          current_gdk_drawable,
 667                                          (int) StateType.Active,
 668                                          IntPtr.Zero,
 669                                          global_gtk_button,
 670                                          "button",
 671                                          focus_rect.X,
 672                                          focus_rect.Y,
 673                                          focus_rect.Width,
 674                                          focus_rect.Height);
 675                 }
 676
 677                 #region ScrollBar
 678                 public override void DrawScrollBar( Graphics dc, Rectangle clip, ScrollBar bar ) {
 679                         int             scrollbutton_width = bar.scrollbutton_width;
 680                         int             scrollbutton_height = bar.scrollbutton_height;
 681                         Rectangle       first_arrow_area;
 682                         Rectangle       second_arrow_area;
 683                         Rectangle       thumb_pos;
 684
 685                         SetDrawableAndStyle (bar);
 686
 687                         Rectangle allocation = new Rectangle (bar.ClientRectangle.X, bar.ClientRectangle.Y, bar.ClientRectangle.Width, bar.ClientRectangle.Height);
 688
 689                         // fix for artefacts
 690                         Color fix_color = bar.Parent != null ? bar.Parent.BackColor : ColorControl;
 691
 692                         if (bar.vert) {
 693                                 gtk_widget_size_allocate (global_gtk_vscrollbar, ref allocation);
 694
 695                                 // fix for artefacts
 696                                 dc.FillRectangle (ResPool.GetSolidBrush (fix_color),
 697                                                   bar.ClientRectangle.X, bar.ClientRectangle.Y, bar.ClientRectangle.Width, 3);
 698                                 dc.FillRectangle (ResPool.GetSolidBrush (fix_color),
 699                                                   bar.ClientRectangle.X, bar.ClientRectangle.Bottom - 4, bar.ClientRectangle.Width, 3);
 700                         } else {
 701                                 gtk_widget_size_allocate (global_gtk_hscrollbar, ref allocation);
 702
 703                                 // fix for artefacts
 704                                 dc.FillRectangle (ResPool.GetSolidBrush (fix_color),
 705                                                   bar.ClientRectangle.X, bar.ClientRectangle.Y, 3, bar.ClientRectangle.Height);
 706                                 dc.FillRectangle (ResPool.GetSolidBrush (fix_color),
 707                                                   bar.ClientRectangle.Right - 4, bar.ClientRectangle.Y, 3, bar.ClientRectangle.Height);
 708                         }
 709
 710                         thumb_pos = bar.ThumbPos;
 711
 712                         if ( bar.vert ) {
 713                                 first_arrow_area = new Rectangle( 0, 0, bar.Width, scrollbutton_height + 1 );
 714                                 bar.FirstArrowArea = first_arrow_area;
 715
 716                                 second_arrow_area = new Rectangle( 0, bar.ClientRectangle.Height - scrollbutton_height - 1, bar.Width, scrollbutton_height + 1 );
 717                                 bar.SecondArrowArea = second_arrow_area;
 718
 719                                 thumb_pos.Width = bar.Width;
 720                                 bar.ThumbPos = thumb_pos;
 721
 722                                 ScrollBar_Vertical_Draw_ThumbMoving_None (scrollbutton_height, bar, clip, dc);
 723
 724                                 /* Buttons */
 725                                 if ( clip.IntersectsWith( first_arrow_area ) )
 726                                         CPDrawScrollButton( dc, first_arrow_area, ScrollButton.Up, bar.firstbutton_state );
 727                                 if ( clip.IntersectsWith( second_arrow_area ) )
 728                                         CPDrawScrollButton( dc, second_arrow_area, ScrollButton.Down, bar.secondbutton_state );
 729                         } else {
 730                                 first_arrow_area = new Rectangle( 0, 0, scrollbutton_width + 1, bar.Height );
 731                                 bar.FirstArrowArea = first_arrow_area;
 732
 733                                 second_arrow_area = new Rectangle( bar.ClientRectangle.Width - scrollbutton_width - 1, 0, scrollbutton_width + 1, bar.Height );
 734                                 bar.SecondArrowArea = second_arrow_area;
 735
 736                                 thumb_pos.Height = bar.Height;
 737                                 bar.ThumbPos = thumb_pos;
 738
 739                                 /* Background */
 740                                 ScrollBar_Horizontal_Draw_ThumbMoving_None (scrollbutton_width, bar, clip, dc);
 741
 742                                 /* Buttons */
 743                                 if ( clip.IntersectsWith( first_arrow_area ) )
 744                                         CPDrawScrollButton( dc, first_arrow_area, ScrollButton.Left, bar.firstbutton_state );
 745                                 if ( clip.IntersectsWith( second_arrow_area ) )
 746                                         CPDrawScrollButton( dc, second_arrow_area, ScrollButton.Right, bar.secondbutton_state );
 747                         }
 748
 749                         /* Thumb */
 750                         ScrollBar_DrawThumb( bar, thumb_pos, clip, dc );
 751
 752                         #if _EXPERIMENTAL_
 753                         DrawDrawableToDC (dc, bar);
 754                         #endif
 755                 }
 756
 757                 protected override void ScrollBar_DrawThumb( ScrollBar bar, Rectangle thumb_pos, Rectangle clip, Graphics dc ) {
 758                         if ( bar.Enabled)
 759                                 DrawScrollBarThumb( dc, thumb_pos, bar );
 760                 }
 761
 762                 protected void ScrollBar_Vertical_Draw_ThumbMoving_None (int scrollbutton_height, ScrollBar bar, Rectangle clip, Graphics dc)
 763                 {
 764                         Rectangle r = new Rectangle (0,
 765                                                      scrollbutton_height, bar.ClientRectangle.Width, bar.ClientRectangle.Height - (scrollbutton_height * 2));
 766                         gtk_paint_box (current_style,
 767                                        current_gdk_drawable,
 768                                        (int) StateType.Active,
 769                                        (int) ShadowType.In,
 770                                        IntPtr.Zero,
 771                                        global_gtk_vscrollbar,
 772                                        "vscrollbar",
 773                                        r.X, r.Y,
 774                                        r.Width, r.Height);
 775                 }
 776
 777                 protected void ScrollBar_Horizontal_Draw_ThumbMoving_None (int scrollbutton_width, ScrollBar bar, Rectangle clip, Graphics dc)
 778                 {
 779                         Rectangle r = new Rectangle (scrollbutton_width,
 780                                                      0, bar.ClientRectangle.Width - (scrollbutton_width * 2), bar.ClientRectangle.Height);
 781
 782                         gtk_paint_box (current_style,
 783                                        current_gdk_drawable,
 784                                        (int) StateType.Active,
 785                                        (int) ShadowType.In,
 786                                        IntPtr.Zero,
 787                                        global_gtk_hscrollbar,
 788                                        "hscrollbar",
 789                                        r.X, r.Y,
 790                                        r.Width, r.Height);
 791                 }
 792
 793                 private void DrawScrollBarThumb( Graphics dc, Rectangle area, ScrollBar bar ) {
 794                         IntPtr gtk_scrollbar = bar.vert ? global_gtk_vscrollbar : global_gtk_hscrollbar;
 795
 796                         gtk_paint_box (current_style,
 797                                        current_gdk_drawable,
 798                                        (int) StateType.Active,
 799                                        (int) ShadowType.Out,
 800                                        IntPtr.Zero,
 801                                        gtk_scrollbar,
 802                                        "slider",
 803                                        area.X, area.Y,
 804                                        area.Width, area.Height);
 805                 }
 806                 #endregion      // ScrollBar
 807
 808                 #region ProgressBar
 809                 public override void DrawProgressBar (Graphics dc, Rectangle clip_rect, ProgressBar ctrl)
 810                 {
 811                         Rectangle       client_area = ctrl.client_area;
 812                         int             barpos_pixels;
 813
 814                         SetDrawableAndStyle (ctrl);
 815
 816                         // draw background
 817                         gtk_paint_box (current_style,
 818                                        current_gdk_drawable,
 819                                        (int) StateType.Normal,
 820                                        (int) ShadowType.In,
 821                                        IntPtr.Zero,
 822                                        global_gtk_progress_bar,
 823                                        "trough",
 824                                        ctrl.ClientRectangle.X,
 825                                        ctrl.ClientRectangle.Y,
 826                                        ctrl.ClientRectangle.Width,
 827                                        ctrl.ClientRectangle.Height);
 828
 829                         // don't draw the bar if Value is = 0
 830                         if (ctrl.Value <= 0)
 831                                 return;
 832
 833                         int value = ctrl.Value;
 834
 835                         if (value > ctrl.Maximum)
 836                                 value = ctrl.Maximum;
 837
 838                         if (value == ctrl.Maximum)
 839                                 barpos_pixels = client_area.Width + 2;
 840                         else
 841                                 barpos_pixels = (((value - ctrl.Minimum) * client_area.Width) / (ctrl.Maximum - ctrl.Minimum)) + 1;
 842
 843                         gtk_paint_box (current_style,
 844                                        current_gdk_drawable,
 845                                        (int) StateType.Prelight,
 846                                        (int) ShadowType.Out,
 847                                        IntPtr.Zero,
 848                                        global_gtk_progress_bar,
 849                                        "bar",
 850                                        client_area.X - 1, client_area.Y - 1,
 851                                        barpos_pixels, client_area.Height + 2);
 852
 853                         #if _EXPERIMENTAL_
 854                         DrawDrawableToDC (dc, ctrl);
 855                         #endif
 856                 }
 857                 #endregion      // ProgressBar
 858
 859                 #region RadioButton
 860                 protected override void RadioButton_DrawButton (RadioButton radio_button, Graphics dc, ButtonState state, Rectangle radiobutton_rectangle)
 861                 {
 862                         // we currently don't care for flat or popup radio buttons
 863                         if (radio_button.appearance == Appearance.Button) {
 864                                 DrawButtonBase (dc, radio_button.ClientRectangle, radio_button);
 865                         } else {
 866                                 DrawRadioButton (dc, radio_button, state, radiobutton_rectangle);
 867                         }
 868                 }
 869
 870                 private void DrawRadioButton (Graphics dc, RadioButton radio_button, ButtonState state, Rectangle radiobutton_rectangle)
 871                 {
 872                         SetDrawableAndStyle (radio_button);
 873
 874                         ShadowType shadow_type;
 875
 876                         if (!radio_button.Enabled)
 877                                 shadow_type = ShadowType.Out;
 878                         else
 879                                 shadow_type = radio_button.Checked ? ShadowType.In : ShadowType.EtchedIn;
 880
 881                         StateType state_type = StateType.Normal;
 882
 883                         if (!radio_button.Enabled)
 884                                 state_type = StateType.Insensitive;
 885                         else
 886                         if (radio_button.is_pressed)
 887                                 state_type = StateType.Active;
 888                         else
 889                         if (radio_button.is_entered)
 890                                 state_type = StateType.Prelight;
 891
 892                         gtk_paint_option (current_style,
 893                                           current_gdk_drawable,
 894                                           (int) state_type,
 895                                           (int) shadow_type,
 896                                           IntPtr.Zero,
 897                                           global_gtk_radio_button,
 898                                           "radiobutton",
 899                                           radiobutton_rectangle.X,
 900                                           radiobutton_rectangle.Y,
 901                                           radiobutton_rectangle.Width,
 902                                           radiobutton_rectangle.Height);
 903
 904                         #if _EXPERIMENTAL_
 905                         DrawDrawableToDC (dc, radio_button);
 906                         #endif
 907                 }
 908
 909                 protected override void RadioButton_DrawText (RadioButton radio_button, Rectangle text_rectangle, Graphics dc, StringFormat text_format)
 910                 {
 911                         if (radio_button.Appearance != Appearance.Button)
 912                                 base.RadioButton_DrawText (radio_button, text_rectangle, dc, text_format);
 913                 }
 914
 915                 protected override void RadioButton_DrawFocus (RadioButton radio_button, Graphics dc, Rectangle text_rectangle)
 916                 {
 917                         if (radio_button.Focused && radio_button.appearance != Appearance.Button) {
 918                                 gtk_paint_focus (current_style,
 919                                                  current_gdk_drawable,
 920                                                  (int) StateType.Active,
 921                                                  IntPtr.Zero,
 922                                                  global_gtk_radio_button,
 923                                                  "radiobutton",
 924                                                  text_rectangle.X,
 925                                                  text_rectangle.Y,
 926                                                  text_rectangle.Width,
 927                                                  text_rectangle.Height);
 928                         }
 929
 930                         #if _EXPERIMENTAL_
 931                         DrawDrawableToDC (dc, radio_button);
 932                         #endif
 933                 }
 934                 #endregion      // RadioButton
 935
 936                 #region CheckBox
 937                 protected override void CheckBox_DrawCheckBox (Graphics dc, CheckBox checkbox, ButtonState state, Rectangle checkbox_rectangle)
 938                 {
 939                         // render as per normal button
 940                         if (checkbox.appearance == Appearance.Button) {
 941                                 DrawButtonBase (dc, checkbox.ClientRectangle, checkbox);
 942                         } else {
 943                                 InternalDrawCheckBox (dc, checkbox, state, checkbox_rectangle);
 944                         }
 945                 }
 946
 947                 private void InternalDrawCheckBox (Graphics dc, CheckBox checkbox, ButtonState state, Rectangle checkbox_rectangle)
 948                 {
 949                         SetDrawableAndStyle (checkbox);
 950
 951                         ShadowType shadow_type;
 952
 953                         if (!checkbox.Enabled)
 954                                 shadow_type = ShadowType.Out;
 955                         else
 956                                 shadow_type = checkbox.Checked ? ShadowType.In : ShadowType.EtchedIn;
 957
 958                         StateType state_type = StateType.Normal;
 959
 960                         if (!checkbox.Enabled)
 961                                 state_type = StateType.Insensitive;
 962                         else
 963                         if (checkbox.is_pressed)
 964                                 state_type = StateType.Active;
 965                         else
 966                         if (checkbox.is_entered)
 967                                 state_type = StateType.Prelight;
 968
 969                         gtk_paint_check (current_style,
 970                                          current_gdk_drawable,
 971                                          (int) state_type,
 972                                          (int) shadow_type,
 973                                          IntPtr.Zero,
 974                                          global_gtk_check_button,
 975                                          "checkbutton",
 976                                          checkbox_rectangle.X,
 977                                          checkbox_rectangle.Y,
 978                                          checkbox_rectangle.Width,
 979                                          checkbox_rectangle.Height);
 980
 981                         #if _EXPERIMENTAL_
 982                         DrawDrawableToDC (dc, checkbox);
 983                         #endif
 984                 }
 985
 986                 protected override void CheckBox_DrawText (CheckBox checkbox, Rectangle text_rectangle, Graphics dc, StringFormat text_format)
 987                 {
 988                         if (checkbox.Appearance != Appearance.Button)
 989                                 base.CheckBox_DrawText (checkbox, text_rectangle, dc, text_format);
 990                 }
 991
 992                 protected override void CheckBox_DrawFocus( CheckBox checkbox, Graphics dc, Rectangle text_rectangle )
 993                 {
 994                         if (checkbox.Focused && checkbox.appearance != Appearance.Button) {
 995                                 gtk_paint_focus (current_style,
 996                                                  current_gdk_drawable,
 997                                                  (int) StateType.Active,
 998                                                  IntPtr.Zero,
 999                                                  global_gtk_check_button,
1000                                                  "checkbutton",
1001                                                  text_rectangle.X,
1002                                                  text_rectangle.Y,
1003                                                  text_rectangle.Width,
1004                                                  text_rectangle.Height);
1005                         }
1006
1007                         #if _EXPERIMENTAL_
1008                         DrawDrawableToDC (dc, checkbox);
1009                         #endif
1010                 }
1011                 #endregion      // CheckBox
1012
1013                 #region TrackBar
1014                 private void DrawTrackBar_Vertical (Graphics dc, Rectangle clip_rectangle, TrackBar tb,
1015                                                     ref Rectangle thumb_pos, ref Rectangle thumb_area,
1016                                                     float ticks, int value_pos, bool mouse_value)
1017                 {
1018                         Point toptick_startpoint = new Point ();
1019                         Point bottomtick_startpoint = new Point ();
1020                         Point channel_startpoint = new Point ();
1021                         float pixel_len;
1022                         float pixels_betweenticks;
1023                         const int space_from_right = 8;
1024                         const int space_from_left = 8;
1025                         Rectangle area = tb.ClientRectangle;
1026
1027                         Rectangle allocation = new Rectangle (area.X, area.Y, area.Width, area.Height);
1028
1029                         gtk_widget_size_allocate (current_widget, ref allocation);
1030
1031                         gtk_range_set_range (current_widget, tb.Minimum, tb.Maximum);
1032                         gtk_range_set_value (current_widget, tb.Value);
1033
1034                         ShadowType shadow_type = ShadowType.In;
1035
1036                         if (!tb.Enabled)
1037                                 shadow_type = ShadowType.Out;
1038
1039                         StateType state_type = StateType.Normal;
1040
1041                         if (!tb.Enabled)
1042                                 state_type = StateType.Insensitive;
1043                         else
1044                         if (tb.is_entered)
1045                                 state_type = StateType.Prelight;
1046
1047                         switch (tb.TickStyle)   {
1048                         case TickStyle.BottomRight:
1049                         case TickStyle.None:
1050                                 channel_startpoint.Y = 8;
1051                                 channel_startpoint.X = 9;
1052                                 bottomtick_startpoint.Y = 13;
1053                                 bottomtick_startpoint.X = 24;
1054                                 break;
1055                         case TickStyle.TopLeft:
1056                                 channel_startpoint.Y = 8;
1057                                 channel_startpoint.X = 19;
1058                                 toptick_startpoint.Y = 13;
1059                                 toptick_startpoint.X = 8;
1060                                 break;
1061                         case TickStyle.Both:
1062                                 channel_startpoint.Y = 8;
1063                                 channel_startpoint.X = 18;
1064                                 bottomtick_startpoint.Y = 13;
1065                                 bottomtick_startpoint.X = 32;
1066                                 toptick_startpoint.Y = 13;
1067                                 toptick_startpoint.X = 8;
1068                                 break;
1069                         default:
1070                                 break;
1071                         }
1072
1073                         thumb_area.X = area.X + channel_startpoint.X;
1074                         thumb_area.Y = area.Y + channel_startpoint.Y;
1075                         thumb_area.Height = area.Height - space_from_right - space_from_left;
1076                         thumb_area.Width = 4;
1077
1078                         pixel_len = thumb_area.Height - 11;
1079                         pixels_betweenticks = pixel_len / (tb.Maximum - tb.Minimum);
1080
1081                         /* Convert thumb position from mouse position to value*/
1082                         if (mouse_value) {
1083
1084                                 if (value_pos >= channel_startpoint.Y)
1085                                         value_pos = (int)(((float) (value_pos - channel_startpoint.Y)) / pixels_betweenticks);
1086                                 else
1087                                         value_pos = 0;
1088
1089                                 if (value_pos + tb.Minimum > tb.Maximum)
1090                                         value_pos = tb.Maximum - tb.Minimum;
1091
1092                                 tb.Value = value_pos + tb.Minimum;
1093                         }
1094
1095                         thumb_pos.Width = 13;
1096                         thumb_pos.Height = 29;
1097
1098                         thumb_pos.Y = channel_startpoint.Y + (int) (pixels_betweenticks * (float) value_pos) - (thumb_pos.Height / 3);
1099
1100                         if (thumb_pos.Y < channel_startpoint.Y)
1101                                 thumb_pos.Y = channel_startpoint.Y;
1102
1103                         if (thumb_pos.Y > thumb_area.Bottom - 29)
1104                                 thumb_pos.Y = thumb_area.Bottom - 29;
1105
1106                         /* Draw channel */
1107                         gtk_paint_box (current_style,
1108                                        current_gdk_drawable,
1109                                        (int)state_type,
1110                                        (int)shadow_type,
1111                                        IntPtr.Zero,
1112                                        current_widget,
1113                                        "trough",
1114                                        thumb_area.X,
1115                                        thumb_area.Y,
1116                                        4,
1117                                        thumb_area.Height);
1118
1119                         /* Draw thumb */
1120                         thumb_pos.X = channel_startpoint.X + 2 - thumb_pos.Width / 2;
1121
1122                         shadow_type = ShadowType.Out;
1123
1124                         gtk_paint_slider (current_style,
1125                                           current_gdk_drawable,
1126                                           (int)state_type,
1127                                           (int)shadow_type,
1128                                           IntPtr.Zero,
1129                                           current_widget,
1130                                           "vscale",
1131                                           thumb_pos.X,
1132                                           thumb_pos.Y,
1133                                           thumb_pos.Width,
1134                                           thumb_pos.Height,
1135                                           0);
1136
1137                         pixel_len = thumb_area.Height - 11;
1138                         pixels_betweenticks = pixel_len / ticks;
1139
1140                         /* Draw ticks*/
1141                         thumb_area.X = thumb_pos.X;
1142                         thumb_area.Y = channel_startpoint.Y;
1143                         thumb_area.Width = thumb_pos.Width;
1144
1145                         Region outside = new Region (area);
1146                         outside.Exclude (thumb_area);
1147
1148                         if (outside.IsVisible (clip_rectangle)) {
1149                                 if (pixels_betweenticks > 0 && ((tb.TickStyle & TickStyle.BottomRight) == TickStyle.BottomRight ||
1150                                     ((tb.TickStyle & TickStyle.Both) == TickStyle.Both))) {
1151
1152                                         for (float inc = 0; inc < (pixel_len + 1); inc += pixels_betweenticks)  {
1153                                                 if (inc == 0 || (inc +  pixels_betweenticks) >= pixel_len + 1)
1154                                                         dc.DrawLine (ResPool.GetPen (pen_ticks_color), area.X + bottomtick_startpoint.X , area.Y + bottomtick_startpoint.Y  + inc,
1155                                                                      area.X + bottomtick_startpoint.X  + 3, area.Y + bottomtick_startpoint.Y + inc);
1156                                                 else
1157                                                         dc.DrawLine (ResPool.GetPen (pen_ticks_color), area.X + bottomtick_startpoint.X, area.Y + bottomtick_startpoint.Y  + inc,
1158                                                                      area.X + bottomtick_startpoint.X  + 2, area.Y + bottomtick_startpoint.Y + inc);
1159                                         }
1160                                 }
1161
1162                                 if (pixels_betweenticks > 0 &&  ((tb.TickStyle & TickStyle.TopLeft) == TickStyle.TopLeft ||
1163                                     ((tb.TickStyle & TickStyle.Both) == TickStyle.Both))) {
1164
1165                                         pixel_len = thumb_area.Height - 11;
1166                                         pixels_betweenticks = pixel_len / ticks;
1167
1168                                         for (float inc = 0; inc < (pixel_len + 1); inc += pixels_betweenticks) {
1169                                                 if (inc == 0 || (inc +  pixels_betweenticks) >= pixel_len + 1)
1170                                                         dc.DrawLine (ResPool.GetPen (pen_ticks_color), area.X + toptick_startpoint.X  - 3 , area.Y + toptick_startpoint.Y + inc,
1171                                                                      area.X + toptick_startpoint.X, area.Y + toptick_startpoint.Y + inc);
1172                                                 else
1173                                                         dc.DrawLine (ResPool.GetPen (pen_ticks_color), area.X + toptick_startpoint.X  - 2, area.Y + toptick_startpoint.Y + inc,
1174                                                                      area.X + toptick_startpoint.X, area.Y + toptick_startpoint.Y  + inc);
1175                                         }
1176                                 }
1177                         }
1178
1179                         outside.Dispose ();
1180                 }
1181
1182                 private void DrawTrackBar_Horizontal (Graphics dc, Rectangle clip_rectangle, TrackBar tb,
1183                                                       ref Rectangle thumb_pos, ref Rectangle thumb_area,
1184                                                       float ticks, int value_pos, bool mouse_value)
1185                 {
1186                         Point toptick_startpoint = new Point ();
1187                         Point bottomtick_startpoint = new Point ();
1188                         Point channel_startpoint = new Point ();
1189                         float pixel_len;
1190                         float pixels_betweenticks;
1191                         const int space_from_right = 8;
1192                         const int space_from_left = 8;
1193                         Rectangle area = tb.ClientRectangle;
1194
1195                         Rectangle allocation = new Rectangle (area.X, area.Y, area.Width, area.Height);
1196
1197                         gtk_widget_size_allocate (current_widget, ref allocation);
1198
1199                         gtk_range_set_range (current_widget, tb.Minimum, tb.Maximum);
1200                         gtk_range_set_value (current_widget, tb.Value);
1201
1202                         ShadowType shadow_type = ShadowType.In;
1203
1204                         if (!tb.Enabled)
1205                                 shadow_type = ShadowType.Out;
1206
1207                         StateType state_type = StateType.Normal;
1208
1209                         if (!tb.Enabled)
1210                                 state_type = StateType.Insensitive;
1211                         else
1212                         if (tb.is_entered)
1213                                 state_type = StateType.Prelight;
1214
1215                         switch (tb.TickStyle) {
1216                         case TickStyle.BottomRight:
1217                         case TickStyle.None:
1218                                 channel_startpoint.X = 8;
1219                                 channel_startpoint.Y = 9;
1220                                 bottomtick_startpoint.X = 13;
1221                                 bottomtick_startpoint.Y = 24;
1222                                 break;
1223                         case TickStyle.TopLeft:
1224                                 channel_startpoint.X = 8;
1225                                 channel_startpoint.Y = 19;
1226                                 toptick_startpoint.X = 13;
1227                                 toptick_startpoint.Y = 8;
1228                                 break;
1229                         case TickStyle.Both:
1230                                 channel_startpoint.X = 8;
1231                                 channel_startpoint.Y = 18;
1232                                 bottomtick_startpoint.X = 13;
1233                                 bottomtick_startpoint.Y = 32;
1234                                 toptick_startpoint.X = 13;
1235                                 toptick_startpoint.Y = 8;
1236                                 break;
1237                         default:
1238                                 break;
1239                         }
1240
1241                         thumb_area.X = area.X + channel_startpoint.X;
1242                         thumb_area.Y = area.Y + channel_startpoint.Y;
1243                         thumb_area.Width = area.Width - space_from_right - space_from_left;
1244                         thumb_area.Height = 4;
1245
1246                         pixel_len = thumb_area.Width - 11;
1247                         pixels_betweenticks = pixel_len / (tb.Maximum - tb.Minimum);
1248
1249                         /* Convert thumb position from mouse position to value*/
1250                         if (mouse_value) {
1251                                 if (value_pos >= channel_startpoint.X)
1252                                         value_pos = (int)(((float) (value_pos - channel_startpoint.X)) / pixels_betweenticks);
1253                                 else
1254                                         value_pos = 0;
1255
1256                                 if (value_pos + tb.Minimum > tb.Maximum)
1257                                         value_pos = tb.Maximum - tb.Minimum;
1258
1259                                 tb.Value = value_pos + tb.Minimum;
1260                         }
1261
1262                         thumb_pos.Width = 29;
1263                         thumb_pos.Height = 13;
1264
1265                         thumb_pos.X = channel_startpoint.X + (int) (pixels_betweenticks * (float) value_pos) - (thumb_pos.Width / 3);
1266
1267
1268                         if (thumb_pos.X < channel_startpoint.X)
1269                                 thumb_pos.X = channel_startpoint.X;
1270
1271                         if (thumb_pos.X > thumb_area.Right - 29)
1272                                 thumb_pos.X = thumb_area.Right - 29;
1273
1274                         /* Draw channel */
1275                         gtk_paint_box (current_style,
1276                                        current_gdk_drawable,
1277                                        (int)state_type,
1278                                        (int)shadow_type,
1279                                        IntPtr.Zero,
1280                                        current_widget,
1281                                        "trough",
1282                                        thumb_area.X,
1283                                        thumb_area.Y,
1284                                        thumb_area.Width,
1285                                        4);
1286
1287                         /* Draw thumb */
1288
1289                         thumb_pos.Y = channel_startpoint.Y + 2 - thumb_pos.Height / 2;
1290
1291                         shadow_type = ShadowType.Out;
1292
1293                         gtk_paint_slider (current_style,
1294                                           current_gdk_drawable,
1295                                           (int)state_type,
1296                                           (int)shadow_type,
1297                                           IntPtr.Zero,
1298                                           current_widget,
1299                                           "hscale",
1300                                           thumb_pos.X,
1301                                           thumb_pos.Y,
1302                                           thumb_pos.Width,
1303                                           thumb_pos.Height,
1304                                           0);
1305
1306                         pixel_len = thumb_area.Width - 11;
1307                         pixels_betweenticks = pixel_len / ticks;
1308
1309                         /* Draw ticks*/
1310                         thumb_area.Y = thumb_pos.Y;
1311                         thumb_area.X = channel_startpoint.X;
1312                         thumb_area.Height = thumb_pos.Height;
1313                         Region outside = new Region (area);
1314                         outside.Exclude (thumb_area);
1315
1316                         if (outside.IsVisible (clip_rectangle)) {
1317                                 if (pixels_betweenticks > 0 && ((tb.TickStyle & TickStyle.BottomRight) == TickStyle.BottomRight ||
1318                                     ((tb.TickStyle & TickStyle.Both) == TickStyle.Both))) {
1319
1320                                         for (float inc = 0; inc < (pixel_len + 1); inc += pixels_betweenticks) {
1321                                                 if (inc == 0 || (inc +  pixels_betweenticks) >= pixel_len + 1)
1322                                                         dc.DrawLine (ResPool.GetPen (pen_ticks_color), area.X + bottomtick_startpoint.X + inc , area.Y + bottomtick_startpoint.Y,
1323                                                                      area.X + bottomtick_startpoint.X + inc , area.Y + bottomtick_startpoint.Y + 3);
1324                                                 else
1325                                                         dc.DrawLine (ResPool.GetPen (pen_ticks_color), area.X + bottomtick_startpoint.X + inc, area.Y + bottomtick_startpoint.Y,
1326                                                                      area.X + bottomtick_startpoint.X + inc, area.Y + bottomtick_startpoint.Y + 2);
1327                                         }
1328                                 }
1329
1330                                 if (pixels_betweenticks > 0 && ((tb.TickStyle & TickStyle.TopLeft) == TickStyle.TopLeft ||
1331                                     ((tb.TickStyle & TickStyle.Both) == TickStyle.Both))) {
1332
1333                                         for (float inc = 0; inc < (pixel_len + 1); inc += pixels_betweenticks) {
1334                                                 if (inc == 0 || (inc +  pixels_betweenticks) >= pixel_len + 1)
1335                                                         dc.DrawLine (ResPool.GetPen (pen_ticks_color), area.X + toptick_startpoint.X + inc , area.Y + toptick_startpoint.Y - 3,
1336                                                                      area.X + toptick_startpoint.X + inc , area.Y + toptick_startpoint.Y);
1337                                                 else
1338                                                         dc.DrawLine (ResPool.GetPen (pen_ticks_color), area.X + toptick_startpoint.X + inc, area.Y + toptick_startpoint.Y - 2,
1339                                                                      area.X + toptick_startpoint.X + inc, area.Y + toptick_startpoint.Y);
1340                                         }
1341                                 }
1342                         }
1343
1344                         outside.Dispose ();
1345                 }
1346
1347                 public override void DrawTrackBar (Graphics dc, Rectangle clip_rectangle, TrackBar tb)
1348                 {
1349                         int             value_pos;
1350                         bool            mouse_value;
1351                         float           ticks = (tb.Maximum - tb.Minimum) / tb.tickFrequency; /* N of ticks draw*/
1352                         Rectangle       area;
1353                         Rectangle       thumb_pos = tb.ThumbPos;
1354                         Rectangle       thumb_area = tb.ThumbArea;
1355
1356                         if (tb.thumb_pressed) {
1357                                 value_pos = tb.thumb_mouseclick;
1358                                 mouse_value = true;
1359                         } else {
1360                                 value_pos = tb.Value - tb.Minimum;
1361                                 mouse_value = false;
1362                         }
1363
1364                         area = tb.ClientRectangle;
1365
1366                         SetDrawableAndStyle (tb);
1367
1368                         /* Control Background */
1369                         if (tb.BackColor == DefaultControlBackColor) {
1370                                 dc.FillRectangle (ResPool.GetSolidBrush (ColorControl), clip_rectangle);
1371                         } else {
1372                                 dc.FillRectangle (ResPool.GetSolidBrush (tb.BackColor), clip_rectangle);
1373                         }
1374
1375                         if (tb.Orientation == Orientation.Vertical) {
1376                                 DrawTrackBar_Vertical (dc, clip_rectangle, tb, ref thumb_pos, ref thumb_area,
1377                                                        ticks, value_pos, mouse_value);
1378
1379                         } else {
1380                                 DrawTrackBar_Horizontal (dc, clip_rectangle, tb, ref thumb_pos, ref thumb_area,
1381                                                          ticks, value_pos, mouse_value);
1382                         }
1383
1384                         if (tb.Enabled && tb.Focused)
1385                                 gtk_paint_focus (current_style,
1386                                                  current_gdk_drawable,
1387                                                  (int)StateType.Normal,
1388                                                  IntPtr.Zero,
1389                                                  current_widget,
1390                                                  "trough",
1391                                                  area.X,
1392                                                  area.Y,
1393                                                  area.Width,
1394                                                  area.Height);
1395
1396                         tb.ThumbPos = thumb_pos;
1397                         tb.ThumbArea = thumb_area;
1398
1399                         #if _EXPERIMENTAL_
1400                         DrawDrawableToDC (dc, tb);
1401                         #endif
1402                 }
1403                 #endregion      // TrackBar
1404
1405                 public override void CPDrawButton (Graphics dc, Rectangle rectangle, ButtonState state)
1406                 {
1407                         #if _EXPERIMENTAL_
1408                         SetDrawableAndStyle (rectangle, typeof(ButtonBase), Orientation.Horizontal);
1409                         #endif
1410
1411                         bool is_pushed = false;
1412 //                      bool is_checked = false;
1413 //                      bool is_flat = false;
1414                         bool is_inactive = false;
1415
1416                         if ((state & ButtonState.Pushed) != 0) {
1417                                 is_pushed = true;
1418                         }
1419
1420 //                      if ((state & ButtonState.Checked) != 0) {
1421 //                              is_checked = true;
1422 //                      }
1423 //
1424 //                      if ((state & ButtonState.Flat) != 0) {
1425 //                              is_flat = true;
1426 //                      }
1427
1428                         if ((state & ButtonState.Inactive) != 0) {
1429                                 is_inactive = true;
1430                         }
1431
1432                         IntPtr drawbutton_style = gtk_style_attach (global_gtk_button_style, current_gdk_drawable);  // need it
1433
1434                         StateType state_type = StateType.Normal;
1435                         ShadowType shadow_type = ShadowType.Out;
1436                         string detail = "buttondefault";
1437
1438                         if (is_inactive) {
1439                                 state_type = StateType.Insensitive;
1440                         } else
1441                         if (is_pushed) {
1442                                 state_type = StateType.Active;
1443                                 shadow_type = ShadowType.In;
1444                                 detail = "button";
1445                         }
1446
1447                         gtk_paint_box (drawbutton_style, current_gdk_drawable,
1448                                        (int) state_type,
1449                                        (int) shadow_type,
1450                                        IntPtr.Zero,
1451                                        IntPtr.Zero,
1452                                        detail,
1453                                        rectangle.X, rectangle.Y,
1454                                        rectangle.Width, rectangle.Height);
1455
1456                         #if _EXPERIMENTAL_
1457                         DrawDrawableToDC (dc, rectangle);
1458                         #endif
1459                 }
1460
1461                 /* Scroll button: regular button + direction arrow */
1462                 public override void CPDrawScrollButton (Graphics dc, Rectangle area, ScrollButton scroll_button_type, ButtonState state)
1463                 {
1464                         #if _EXPERIMENTAL_
1465                         Orientation orientation = Orientation.Vertical;
1466                         if (scroll_button_type == ScrollButton.Left || scroll_button_type == ScrollButton.Right)
1467                                 orientation = Orientation.Horizontal;
1468                         SetDrawableAndStyle (area, typeof(ScrollBar), orientation);
1469                         #endif
1470
1471                         bool enabled = (state == ButtonState.Inactive) ? false: true;
1472
1473                         StateType state_type = enabled ? StateType.Normal : StateType.Insensitive;
1474
1475                         DrawScrollButtonPrimitive (dc, area, state, scroll_button_type);
1476
1477                         if (area.Width < 12 || area.Height < 12) /* Cannot see a thing at smaller sizes */
1478                                 return;
1479
1480                         ArrowType arrow_type = 0;
1481
1482                         switch (scroll_button_type) {
1483                         case ScrollButton.Up:
1484                                 arrow_type = ArrowType.Up;
1485                                 break;
1486                         case ScrollButton.Down:
1487                                 arrow_type = ArrowType.Down;
1488                                 break;
1489                         case ScrollButton.Right:
1490                                 arrow_type = ArrowType.Right;
1491                                 break;
1492                         case ScrollButton.Left:
1493                                 arrow_type = ArrowType.Left;
1494                                 break;
1495                         default:
1496                                 break;
1497                         }
1498
1499                         int centerX = area.Left + area.Width / 2;
1500                         int centerY = area.Top + area.Height / 2;
1501                         int arrow_x = 0, arrow_y = 0, arrow_height = 0, arrow_width = 0;
1502
1503                         switch (scroll_button_type) {
1504                         case ScrollButton.Down:
1505                         case ScrollButton.Up:
1506                                 arrow_x = centerX - 4;
1507                                 arrow_y = centerY - 2;
1508                                 arrow_width = 8;
1509                                 arrow_height = 4;
1510                                 break;
1511                         case ScrollButton.Left:
1512                         case ScrollButton.Right:
1513                                 arrow_x = centerX - 2;
1514                                 arrow_y = centerY - 4;
1515                                 arrow_width = 4;
1516                                 arrow_height = 8;
1517                                 break;
1518                         default:
1519                                 break;
1520                         }
1521
1522                         gtk_paint_arrow (current_style,
1523                                          current_gdk_drawable,
1524                                          (int) state_type,
1525                                          (int) ShadowType.Out,
1526                                          IntPtr.Zero,
1527                                          current_widget,
1528                                          "",
1529                                          (int) arrow_type, true,
1530                                          arrow_x,
1531                                          arrow_y,
1532                                          arrow_width, arrow_height);
1533
1534                         current_widget = IntPtr.Zero;
1535
1536                         #if _EXPERIMENTAL_
1537                         DrawDrawableToDC (dc, area);
1538                         #endif
1539                 }
1540
1541                 public void DrawScrollButtonPrimitive (Graphics dc, Rectangle area, ButtonState state, ScrollButton scroll_button_type)
1542                 {
1543                         StateType state_type = StateType.Normal;
1544                         ShadowType shadow_type = ShadowType.Out;
1545
1546                         if ((state & ButtonState.Pushed) == ButtonState.Pushed) {
1547                                 state_type = StateType.Active;
1548                                 shadow_type = ShadowType.In;
1549                         }
1550
1551                         switch (scroll_button_type) {
1552                         case ScrollButton.Left:
1553                         case ScrollButton.Right:
1554                                 gtk_paint_box (current_style,
1555                                                current_gdk_drawable,
1556                                                (int) state_type,
1557                                                (int) shadow_type,
1558                                                IntPtr.Zero,
1559                                                global_gtk_hscrollbar,
1560                                                "stepper",
1561                                                area.X, area.Y,
1562                                                area.Width, area.Height);
1563                                 break;
1564                         case ScrollButton.Up:
1565                         case ScrollButton.Down:
1566                                 gtk_paint_box (current_style,
1567                                                current_gdk_drawable,
1568                                                (int) state_type,
1569                                                (int) shadow_type,
1570                                                IntPtr.Zero,
1571                                                global_gtk_vscrollbar,
1572                                                "stepper",
1573                                                area.X, area.Y,
1574                                                area.Width, area.Height);
1575                                 break;
1576                         }
1577                 }
1578
1579                 private static Color ColorFromGdkColor (GdkColorStruct gtkcolor)
1580                 {
1581                         return Color.FromArgb (255,
1582                                 (gtkcolor.red >> 8)  & 0xff,
1583                                 (gtkcolor.green  >> 8) & 0xff,
1584                                 (gtkcolor.blue >> 8) & 0xff );
1585                 }
1586
1587         } //class
1588 }