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
   4 // without limitation the rights to use, copy, modify, merge, publish,
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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                         always_draw_hotkeys = true;
 390                 }
 391
 392                 public override bool DoubleBufferingSupported {
 393                         #if _EXPERIMENTAL_
 394                         get {return true; }
 395                         #else
 396                         get {return false; }
 397                         #endif
 398                 }
 399
 400                 private void SetDrawableAndStyle (Control control)
 401                 {
 402                         #if _EXPERIMENTAL_
 403                         if (current_gdk_drawable != IntPtr.Zero) {
 404                                 g_object_unref (current_gdk_drawable);
 405                                 current_gdk_drawable = IntPtr.Zero;
 406                         }
 407                         current_gdk_drawable = gdk_pixmap_new (IntPtr.Zero, control.ClientRectangle.Width, control.ClientRectangle.Height, 24);
 408                         #else
 409                         current_gdk_drawable = gdk_window_foreign_new_for_display (gdkdisplay, (uint) control.Handle);
 410                         #endif
 411
 412                         IntPtr tmp_style = IntPtr.Zero;
 413
 414                         if (control is ButtonBase) {
 415                                 tmp_style = global_gtk_button_style;
 416                                 current_widget = global_gtk_button;
 417                         } else
 418                         if (control is ScrollBar) {
 419                                 ScrollBar bar = control as ScrollBar;
 420                                 if (bar.vert) {
 421                                         tmp_style = global_gtk_vscrollbar_style;
 422                                         current_widget = global_gtk_vscrollbar;
 423                                 } else {
 424                                         tmp_style = global_gtk_hscrollbar_style;
 425                                         current_widget = global_gtk_hscrollbar;
 426                                 }
 427                         } else
 428                         if (control is ProgressBar) {
 429                                 tmp_style = global_gtk_progress_bar_style;
 430                                 current_widget = global_gtk_progress_bar;
 431                         } else
 432                         if (control is RadioButton) {
 433                                 tmp_style = global_gtk_radio_button_style;
 434                                 current_widget = global_gtk_radio_button;
 435                         } else
 436                         if (control is CheckBox) {
 437                                 tmp_style = global_gtk_check_button_style;
 438                                 current_widget = global_gtk_check_button;
 439                         } else
 440                         if (control is TrackBar) {
 441                                 TrackBar bar = control as TrackBar;
 442                                 if (bar.Orientation == Orientation.Vertical) {
 443                                         tmp_style = global_gtk_vscale_style;
 444                                         current_widget = global_gtk_vscale;
 445                                 } else {
 446                                         tmp_style = global_gtk_hscale_style;
 447                                         current_widget = global_gtk_hscale;
 448                                 }
 449                         } else
 450                                 tmp_style = global_style;
 451
 452                         current_style = gtk_style_attach (tmp_style, current_gdk_drawable);  // need it
 453                 }
 454
 455                 #if _EXPERIMENTAL_
 456                 private void SetDrawableAndStyle (Rectangle area, Type type, Orientation orientation)
 457                 {
 458                         if (current_gdk_drawable != IntPtr.Zero) {
 459                                 g_object_unref (current_gdk_drawable);
 460                                 current_gdk_drawable = IntPtr.Zero;
 461                         }
 462                         current_gdk_drawable = gdk_pixmap_new (IntPtr.Zero, area.Width, area.Height, 24);
 463
 464                         IntPtr tmp_style = IntPtr.Zero;
 465
 466                         if (type == typeof(ButtonBase)) {
 467                                 tmp_style = global_gtk_button_style;
 468                                 current_widget = global_gtk_button;
 469                         } else
 470                         if (type == typeof(ScrollBar)) {
 471                                 if (orientation == Orientation.Vertical) {
 472                                         tmp_style = global_gtk_vscrollbar_style;
 473                                         current_widget = global_gtk_vscrollbar;
 474                                 } else {
 475                                         tmp_style = global_gtk_hscrollbar_style;
 476                                         current_widget = global_gtk_hscrollbar;
 477                                 }
 478                         } else
 479                         if (type == typeof(ProgressBar)) {
 480                                 tmp_style = global_gtk_progress_bar_style;
 481                                 current_widget = global_gtk_progress_bar;
 482                         } else
 483                         if (type == typeof(RadioButton)) {
 484                                 tmp_style = global_gtk_radio_button_style;
 485                                 current_widget = global_gtk_radio_button;
 486                         } else
 487                         if (type == typeof(CheckBox)) {
 488                                 tmp_style = global_gtk_check_button_style;
 489                                 current_widget = global_gtk_check_button;
 490                         } else
 491                         if (type == typeof(TrackBar)) {
 492                                 if (orientation == Orientation.Vertical) {
 493                                         tmp_style = global_gtk_vscale_style;
 494                                         current_widget = global_gtk_vscale;
 495                                 } else {
 496                                         tmp_style = global_gtk_hscale_style;
 497                                         current_widget = global_gtk_hscale;
 498                                 }
 499                         } else
 500                                 tmp_style = global_style;
 501
 502                         current_style = gtk_style_attach (tmp_style, current_gdk_drawable);  // need it
 503                 }
 504                 #endif
 505
 506                 #if _EXPERIMENTAL_
 507                 private void DrawDrawableToDC (Graphics dc, Control control)
 508                 {
 509                         IntPtr new_pixbuf = gdk_pixbuf_new (0, true, 8, control.ClientRectangle.Width, control.ClientRectangle.Height);
 510
 511                         gdk_pixbuf_get_from_drawable (new_pixbuf,
 512                                                       current_gdk_drawable,
 513                                                       global_color_map,
 514                                                       0,
 515                                                       0,
 516                                                       0,
 517                                                       0,
 518                                                       -1,
 519                                                       -1);
 520
 521                         IntPtr error = IntPtr.Zero;
 522                         IntPtr buffer;
 523                         UIntPtr buffer_size_as_ptr;
 524                         string type = "png";
 525
 526                         bool saved = gdk_pixbuf_save_to_buffer (new_pixbuf, out buffer, out buffer_size_as_ptr, type, out error, IntPtr.Zero);
 527
 528                         if (!saved)
 529                                 return;
 530
 531                         int buffer_size = (int) (uint) buffer_size_as_ptr;
 532                         byte[] result = new byte [buffer_size];
 533                         Marshal.Copy (buffer, result, 0, (int) buffer_size);
 534                         g_free (buffer);
 535                         g_object_unref (new_pixbuf);
 536
 537                         Image image = null;
 538                         using (MemoryStream s = new MemoryStream (result))
 539                                 image = Image.FromStream (s);
 540
 541                         dc.DrawImage (image, control.ClientRectangle);
 542                 }
 543
 544                 private void DrawDrawableToDC (Graphics dc, Rectangle area)
 545                 {
 546                         IntPtr new_pixbuf = gdk_pixbuf_new (0, true, 8, area.Width, area.Height);
 547
 548                         gdk_pixbuf_get_from_drawable (new_pixbuf,
 549                                                       current_gdk_drawable,
 550                                                       global_color_map,
 551                                                       0,
 552                                                       0,
 553                                                       0,
 554                                                       0,
 555                                                       -1,
 556                                                       -1);
 557
 558                         IntPtr error = IntPtr.Zero;
 559                         IntPtr buffer;
 560                         UIntPtr buffer_size_as_ptr;
 561                         string type = "png";
 562
 563                         bool saved = gdk_pixbuf_save_to_buffer (new_pixbuf, out buffer, out buffer_size_as_ptr, type, out error, IntPtr.Zero);
 564
 565                         if (!saved)
 566                                 return;
 567
 568                         int buffer_size = (int) (uint) buffer_size_as_ptr;
 569                         byte[] result = new byte [buffer_size];
 570                         Marshal.Copy (buffer, result, 0, (int) buffer_size);
 571                         g_free (buffer);
 572                         g_object_unref (new_pixbuf);
 573
 574                         Image image = null;
 575                         using (MemoryStream s = new MemoryStream (result))
 576                                 image = Image.FromStream (s);
 577
 578                         dc.DrawImage (image, area);
 579                 }
 580                 #endif
 581
 582                 public override void DrawButtonBase (Graphics dc, Rectangle clip_area, ButtonBase button)
 583                 {
 584                         SetDrawableAndStyle (button);
 585
 586                         // Draw the button: fill rectangle, draw border, etc.
 587                         ButtonBase_DrawButton (button, dc);
 588
 589                         // First, draw the image
 590                         if ((button.image != null) || (button.image_list != null))
 591                                 ButtonBase_DrawImage (button, dc);
 592
 593                         // Draw the focus rectangle
 594                         if (button.has_focus)
 595                                 ButtonBase_DrawFocus (button, dc);
 596
 597                         #if _EXPERIMENTAL_
 598                         DrawDrawableToDC (dc, button);
 599                         #endif
 600
 601                         // Now the text
 602                         if (button.Text != null && button.Text != String.Empty)
 603                                 ButtonBase_DrawText (button, dc);
 604                 }
 605
 606                 protected override void ButtonBase_DrawButton(ButtonBase button, Graphics dc)
 607                 {
 608                         Rectangle buttonRectangle = button.ClientRectangle;
 609
 610                         StateType state_type = StateType.Normal;
 611                         ShadowType shadow_type = button.FlatStyle == FlatStyle.Flat ? ShadowType.In : ShadowType.Out;
 612                         string detail = "buttondefault";
 613
 614                         if (((button is CheckBox) && (((CheckBox)button).check_state == CheckState.Checked)) ||
 615                             ((button is RadioButton) && (((RadioButton)button).check_state == CheckState.Checked))) {
 616                                 state_type = StateType.Active;
 617                                 shadow_type = ShadowType.In;
 618                                 detail = "button";
 619                         } else
 620                         if (!button.is_enabled) {
 621                                 state_type = StateType.Insensitive;
 622                         } else
 623                         if (button.is_pressed) {
 624                                 state_type = StateType.Active;
 625                                 shadow_type = ShadowType.In;
 626                                 detail = "button";
 627                         } else
 628                         if (button.is_entered) {
 629                                 state_type = StateType.Prelight;
 630                         }
 631
 632                         if (button.Focused)
 633                                 gtk_widget_grab_focus (global_gtk_button);
 634
 635                         if (button.FlatStyle == FlatStyle.Flat)
 636                                 gtk_paint_flat_box (current_style,
 637                                                     current_gdk_drawable,
 638                                                     (int) state_type,
 639                                                     (int) shadow_type,
 640                                                     IntPtr.Zero,
 641                                                     global_gtk_button,
 642                                                     detail,
 643                                                     buttonRectangle.X, buttonRectangle.Y,
 644                                                     buttonRectangle.Width, buttonRectangle.Height);
 645                         else
 646                         if (button.FlatStyle != FlatStyle.Popup || (button.FlatStyle == FlatStyle.Popup && button.is_entered))
 647                                 gtk_paint_box (current_style,
 648                                                current_gdk_drawable,
 649                                                (int) state_type,
 650                                                (int) shadow_type,
 651                                                IntPtr.Zero,
 652                                                global_gtk_button,
 653                                                detail,
 654                                                buttonRectangle.X, buttonRectangle.Y,
 655                                                buttonRectangle.Width, buttonRectangle.Height);
 656                 }
 657
 658                 protected override void ButtonBase_DrawFocus (ButtonBase button, Graphics dc)
 659                 {
 660                         if (!button.is_enabled)
 661                                 return;
 662
 663                         Rectangle focus_rect = new Rectangle (button.ClientRectangle.X + 4, button.ClientRectangle.Y + 4, button.ClientRectangle.Width - 9, button.ClientRectangle.Height - 9);
 664
 665                         gtk_widget_grab_focus (global_gtk_button);
 666
 667                         gtk_paint_focus (current_style,
 668                                          current_gdk_drawable,
 669                                          (int) StateType.Active,
 670                                          IntPtr.Zero,
 671                                          global_gtk_button,
 672                                          "button",
 673                                          focus_rect.X,
 674                                          focus_rect.Y,
 675                                          focus_rect.Width,
 676                                          focus_rect.Height);
 677                 }
 678
 679                 #region ScrollBar
 680                 public override void DrawScrollBar( Graphics dc, Rectangle clip, ScrollBar bar ) {
 681                         int             scrollbutton_width = bar.scrollbutton_width;
 682                         int             scrollbutton_height = bar.scrollbutton_height;
 683                         Rectangle       first_arrow_area;
 684                         Rectangle       second_arrow_area;
 685                         Rectangle       thumb_pos;
 686
 687                         SetDrawableAndStyle (bar);
 688
 689                         Rectangle allocation = new Rectangle (bar.ClientRectangle.X, bar.ClientRectangle.Y, bar.ClientRectangle.Width, bar.ClientRectangle.Height);
 690
 691                         // fix for artefacts
 692                         Color fix_color = bar.Parent != null ? bar.Parent.BackColor : ColorControl;
 693
 694                         if (bar.vert) {
 695                                 gtk_widget_size_allocate (global_gtk_vscrollbar, ref allocation);
 696
 697                                 // fix for artefacts
 698                                 dc.FillRectangle (ResPool.GetSolidBrush (fix_color),
 699                                                   bar.ClientRectangle.X, bar.ClientRectangle.Y, bar.ClientRectangle.Width, 3);
 700                                 dc.FillRectangle (ResPool.GetSolidBrush (fix_color),
 701                                                   bar.ClientRectangle.X, bar.ClientRectangle.Bottom - 4, bar.ClientRectangle.Width, 3);
 702                         } else {
 703                                 gtk_widget_size_allocate (global_gtk_hscrollbar, ref allocation);
 704
 705                                 // fix for artefacts
 706                                 dc.FillRectangle (ResPool.GetSolidBrush (fix_color),
 707                                                   bar.ClientRectangle.X, bar.ClientRectangle.Y, 3, bar.ClientRectangle.Height);
 708                                 dc.FillRectangle (ResPool.GetSolidBrush (fix_color),
 709                                                   bar.ClientRectangle.Right - 4, bar.ClientRectangle.Y, 3, bar.ClientRectangle.Height);
 710                         }
 711
 712                         thumb_pos = bar.ThumbPos;
 713
 714                         if ( bar.vert ) {
 715                                 first_arrow_area = new Rectangle( 0, 0, bar.Width, scrollbutton_height + 1 );
 716                                 bar.FirstArrowArea = first_arrow_area;
 717
 718                                 second_arrow_area = new Rectangle( 0, bar.ClientRectangle.Height - scrollbutton_height - 1, bar.Width, scrollbutton_height + 1 );
 719                                 bar.SecondArrowArea = second_arrow_area;
 720
 721                                 thumb_pos.Width = bar.Width;
 722                                 bar.ThumbPos = thumb_pos;
 723
 724                                 ScrollBar_Vertical_Draw_ThumbMoving_None (scrollbutton_height, bar, clip, dc);
 725
 726                                 /* Buttons */
 727                                 if ( clip.IntersectsWith( first_arrow_area ) )
 728                                         CPDrawScrollButton( dc, first_arrow_area, ScrollButton.Up, bar.firstbutton_state );
 729                                 if ( clip.IntersectsWith( second_arrow_area ) )
 730                                         CPDrawScrollButton( dc, second_arrow_area, ScrollButton.Down, bar.secondbutton_state );
 731                         } else {
 732                                 first_arrow_area = new Rectangle( 0, 0, scrollbutton_width + 1, bar.Height );
 733                                 bar.FirstArrowArea = first_arrow_area;
 734
 735                                 second_arrow_area = new Rectangle( bar.ClientRectangle.Width - scrollbutton_width - 1, 0, scrollbutton_width + 1, bar.Height );
 736                                 bar.SecondArrowArea = second_arrow_area;
 737
 738                                 thumb_pos.Height = bar.Height;
 739                                 bar.ThumbPos = thumb_pos;
 740
 741                                 /* Background */
 742                                 ScrollBar_Horizontal_Draw_ThumbMoving_None (scrollbutton_width, bar, clip, dc);
 743
 744                                 /* Buttons */
 745                                 if ( clip.IntersectsWith( first_arrow_area ) )
 746                                         CPDrawScrollButton( dc, first_arrow_area, ScrollButton.Left, bar.firstbutton_state );
 747                                 if ( clip.IntersectsWith( second_arrow_area ) )
 748                                         CPDrawScrollButton( dc, second_arrow_area, ScrollButton.Right, bar.secondbutton_state );
 749                         }
 750
 751                         /* Thumb */
 752                         ScrollBar_DrawThumb( bar, thumb_pos, clip, dc );
 753
 754                         #if _EXPERIMENTAL_
 755                         DrawDrawableToDC (dc, bar);
 756                         #endif
 757                 }
 758
 759                 protected override void ScrollBar_DrawThumb( ScrollBar bar, Rectangle thumb_pos, Rectangle clip, Graphics dc ) {
 760                         if ( bar.Enabled)
 761                                 DrawScrollBarThumb( dc, thumb_pos, bar );
 762                 }
 763
 764                 protected override void ScrollBar_Vertical_Draw_ThumbMoving_None (int scrollbutton_height, ScrollBar bar, Rectangle clip, Graphics dc)
 765                 {
 766                         Rectangle r = new Rectangle (0,
 767                                                      scrollbutton_height, bar.ClientRectangle.Width, bar.ClientRectangle.Height - (scrollbutton_height * 2));
 768                         gtk_paint_box (current_style,
 769                                        current_gdk_drawable,
 770                                        (int) StateType.Active,
 771                                        (int) ShadowType.In,
 772                                        IntPtr.Zero,
 773                                        global_gtk_vscrollbar,
 774                                        "vscrollbar",
 775                                        r.X, r.Y,
 776                                        r.Width, r.Height);
 777                 }
 778
 779                 protected override void ScrollBar_Horizontal_Draw_ThumbMoving_None (int scrollbutton_width, ScrollBar bar, Rectangle clip, Graphics dc)
 780                 {
 781                         Rectangle r = new Rectangle (scrollbutton_width,
 782                                                      0, bar.ClientRectangle.Width - (scrollbutton_width * 2), bar.ClientRectangle.Height);
 783
 784                         gtk_paint_box (current_style,
 785                                        current_gdk_drawable,
 786                                        (int) StateType.Active,
 787                                        (int) ShadowType.In,
 788                                        IntPtr.Zero,
 789                                        global_gtk_hscrollbar,
 790                                        "hscrollbar",
 791                                        r.X, r.Y,
 792                                        r.Width, r.Height);
 793                 }
 794
 795                 private void DrawScrollBarThumb( Graphics dc, Rectangle area, ScrollBar bar ) {
 796                         IntPtr gtk_scrollbar = bar.vert ? global_gtk_vscrollbar : global_gtk_hscrollbar;
 797
 798                         gtk_paint_box (current_style,
 799                                        current_gdk_drawable,
 800                                        (int) StateType.Active,
 801                                        (int) ShadowType.Out,
 802                                        IntPtr.Zero,
 803                                        gtk_scrollbar,
 804                                        "slider",
 805                                        area.X, area.Y,
 806                                        area.Width, area.Height);
 807                 }
 808                 #endregion      // ScrollBar
 809
 810                 #region ProgressBar
 811                 public override void DrawProgressBar (Graphics dc, Rectangle clip_rect, ProgressBar ctrl)
 812                 {
 813                         Rectangle       client_area = ctrl.client_area;
 814                         int             barpos_pixels;
 815
 816                         SetDrawableAndStyle (ctrl);
 817
 818                         // draw background
 819                         gtk_paint_box (current_style,
 820                                        current_gdk_drawable,
 821                                        (int) StateType.Normal,
 822                                        (int) ShadowType.In,
 823                                        IntPtr.Zero,
 824                                        global_gtk_progress_bar,
 825                                        "trough",
 826                                        ctrl.ClientRectangle.X,
 827                                        ctrl.ClientRectangle.Y,
 828                                        ctrl.ClientRectangle.Width,
 829                                        ctrl.ClientRectangle.Height);
 830
 831                         // don't draw the bar if Value is = 0
 832                         if (ctrl.Value <= 0)
 833                                 return;
 834
 835                         int value = ctrl.Value;
 836
 837                         if (value > ctrl.Maximum)
 838                                 value = ctrl.Maximum;
 839
 840                         if (value == ctrl.Maximum)
 841                                 barpos_pixels = client_area.Width + 2;
 842                         else
 843                                 barpos_pixels = (((value - ctrl.Minimum) * client_area.Width) / (ctrl.Maximum - ctrl.Minimum)) + 1;
 844
 845                         gtk_paint_box (current_style,
 846                                        current_gdk_drawable,
 847                                        (int) StateType.Prelight,
 848                                        (int) ShadowType.Out,
 849                                        IntPtr.Zero,
 850                                        global_gtk_progress_bar,
 851                                        "bar",
 852                                        client_area.X - 1, client_area.Y - 1,
 853                                        barpos_pixels, client_area.Height + 2);
 854
 855                         #if _EXPERIMENTAL_
 856                         DrawDrawableToDC (dc, ctrl);
 857                         #endif
 858                 }
 859                 #endregion      // ProgressBar
 860
 861                 #region RadioButton
 862                 protected override void RadioButton_DrawButton (RadioButton radio_button, Graphics dc, ButtonState state, Rectangle radiobutton_rectangle)
 863                 {
 864                         // we currently don't care for flat or popup radio buttons
 865                         if (radio_button.appearance == Appearance.Button) {
 866                                 DrawButtonBase (dc, radio_button.ClientRectangle, radio_button);
 867                         } else {
 868                                 DrawRadioButton (dc, radio_button, state, radiobutton_rectangle);
 869                         }
 870                 }
 871
 872                 private void DrawRadioButton (Graphics dc, RadioButton radio_button, ButtonState state, Rectangle radiobutton_rectangle)
 873                 {
 874                         SetDrawableAndStyle (radio_button);
 875
 876                         ShadowType shadow_type;
 877
 878                         if (!radio_button.Enabled)
 879                                 shadow_type = ShadowType.Out;
 880                         else
 881                                 shadow_type = radio_button.Checked ? ShadowType.In : ShadowType.EtchedIn;
 882
 883                         StateType state_type = StateType.Normal;
 884
 885                         if (!radio_button.Enabled)
 886                                 state_type = StateType.Insensitive;
 887                         else
 888                         if (radio_button.is_pressed)
 889                                 state_type = StateType.Active;
 890                         else
 891                         if (radio_button.is_entered)
 892                                 state_type = StateType.Prelight;
 893
 894                         gtk_paint_option (current_style,
 895                                           current_gdk_drawable,
 896                                           (int) state_type,
 897                                           (int) shadow_type,
 898                                           IntPtr.Zero,
 899                                           global_gtk_radio_button,
 900                                           "radiobutton",
 901                                           radiobutton_rectangle.X,
 902                                           radiobutton_rectangle.Y,
 903                                           radiobutton_rectangle.Width,
 904                                           radiobutton_rectangle.Height);
 905
 906                         #if _EXPERIMENTAL_
 907                         DrawDrawableToDC (dc, radio_button);
 908                         #endif
 909                 }
 910
 911                 protected override void RadioButton_DrawText (RadioButton radio_button, Rectangle text_rectangle, Graphics dc, StringFormat text_format)
 912                 {
 913                         if (radio_button.Appearance != Appearance.Button)
 914                                 base.RadioButton_DrawText (radio_button, text_rectangle, dc, text_format);
 915                 }
 916
 917                 protected override void RadioButton_DrawFocus (RadioButton radio_button, Graphics dc, Rectangle text_rectangle)
 918                 {
 919                         if (radio_button.Focused && radio_button.appearance != Appearance.Button) {
 920                                 gtk_paint_focus (current_style,
 921                                                  current_gdk_drawable,
 922                                                  (int) StateType.Active,
 923                                                  IntPtr.Zero,
 924                                                  global_gtk_radio_button,
 925                                                  "radiobutton",
 926                                                  text_rectangle.X,
 927                                                  text_rectangle.Y,
 928                                                  text_rectangle.Width,
 929                                                  text_rectangle.Height);
 930                         }
 931
 932                         #if _EXPERIMENTAL_
 933                         DrawDrawableToDC (dc, radio_button);
 934                         #endif
 935                 }
 936                 #endregion      // RadioButton
 937
 938                 #region CheckBox
 939                 protected override void CheckBox_DrawCheckBox (Graphics dc, CheckBox checkbox, ButtonState state, Rectangle checkbox_rectangle)
 940                 {
 941                         // render as per normal button
 942                         if (checkbox.appearance == Appearance.Button) {
 943                                 DrawButtonBase (dc, checkbox.ClientRectangle, checkbox);
 944                         } else {
 945                                 InternalDrawCheckBox (dc, checkbox, state, checkbox_rectangle);
 946                         }
 947                 }
 948
 949                 private void InternalDrawCheckBox (Graphics dc, CheckBox checkbox, ButtonState state, Rectangle checkbox_rectangle)
 950                 {
 951                         SetDrawableAndStyle (checkbox);
 952
 953                         ShadowType shadow_type;
 954
 955                         if (!checkbox.Enabled)
 956                                 shadow_type = ShadowType.Out;
 957                         else
 958                                 shadow_type = checkbox.Checked ? ShadowType.In : ShadowType.EtchedIn;
 959
 960                         StateType state_type = StateType.Normal;
 961
 962                         if (!checkbox.Enabled)
 963                                 state_type = StateType.Insensitive;
 964                         else
 965                         if (checkbox.is_pressed)
 966                                 state_type = StateType.Active;
 967                         else
 968                         if (checkbox.is_entered)
 969                                 state_type = StateType.Prelight;
 970
 971                         gtk_paint_check (current_style,
 972                                          current_gdk_drawable,
 973                                          (int) state_type,
 974                                          (int) shadow_type,
 975                                          IntPtr.Zero,
 976                                          global_gtk_check_button,
 977                                          "checkbutton",
 978                                          checkbox_rectangle.X,
 979                                          checkbox_rectangle.Y,
 980                                          checkbox_rectangle.Width,
 981                                          checkbox_rectangle.Height);
 982
 983                         #if _EXPERIMENTAL_
 984                         DrawDrawableToDC (dc, checkbox);
 985                         #endif
 986                 }
 987
 988                 protected override void CheckBox_DrawText (CheckBox checkbox, Rectangle text_rectangle, Graphics dc, StringFormat text_format)
 989                 {
 990                         if (checkbox.Appearance != Appearance.Button)
 991                                 base.CheckBox_DrawText (checkbox, text_rectangle, dc, text_format);
 992                 }
 993
 994                 protected override void CheckBox_DrawFocus( CheckBox checkbox, Graphics dc, Rectangle text_rectangle )
 995                 {
 996                         if (checkbox.Focused && checkbox.appearance != Appearance.Button) {
 997                                 gtk_paint_focus (current_style,
 998                                                  current_gdk_drawable,
 999                                                  (int) StateType.Active,
1000                                                  IntPtr.Zero,
1001                                                  global_gtk_check_button,
1002                                                  "checkbutton",
1003                                                  text_rectangle.X,
1004                                                  text_rectangle.Y,
1005                                                  text_rectangle.Width,
1006                                                  text_rectangle.Height);
1007                         }
1008
1009                         #if _EXPERIMENTAL_
1010                         DrawDrawableToDC (dc, checkbox);
1011                         #endif
1012                 }
1013                 #endregion      // CheckBox
1014
1015                 #region TrackBar
1016                 private void DrawTrackBar_Vertical (Graphics dc, Rectangle clip_rectangle, TrackBar tb,
1017                                                     ref Rectangle thumb_pos, ref Rectangle thumb_area,
1018                                                     float ticks, int value_pos, bool mouse_value)
1019                 {
1020                         Point toptick_startpoint = new Point ();
1021                         Point bottomtick_startpoint = new Point ();
1022                         Point channel_startpoint = new Point ();
1023                         float pixel_len;
1024                         float pixels_betweenticks;
1025                         const int space_from_right = 8;
1026                         const int space_from_left = 8;
1027                         Rectangle area = tb.ClientRectangle;
1028
1029                         Rectangle allocation = new Rectangle (area.X, area.Y, area.Width, area.Height);
1030
1031                         gtk_widget_size_allocate (current_widget, ref allocation);
1032
1033                         gtk_range_set_range (current_widget, tb.Minimum, tb.Maximum);
1034                         gtk_range_set_value (current_widget, tb.Value);
1035
1036                         ShadowType shadow_type = ShadowType.In;
1037
1038                         if (!tb.Enabled)
1039                                 shadow_type = ShadowType.Out;
1040
1041                         StateType state_type = StateType.Normal;
1042
1043                         if (!tb.Enabled)
1044                                 state_type = StateType.Insensitive;
1045                         else
1046                         if (tb.is_entered)
1047                                 state_type = StateType.Prelight;
1048
1049                         switch (tb.TickStyle)   {
1050                         case TickStyle.BottomRight:
1051                         case TickStyle.None:
1052                                 channel_startpoint.Y = 8;
1053                                 channel_startpoint.X = 9;
1054                                 bottomtick_startpoint.Y = 13;
1055                                 bottomtick_startpoint.X = 24;
1056                                 break;
1057                         case TickStyle.TopLeft:
1058                                 channel_startpoint.Y = 8;
1059                                 channel_startpoint.X = 19;
1060                                 toptick_startpoint.Y = 13;
1061                                 toptick_startpoint.X = 8;
1062                                 break;
1063                         case TickStyle.Both:
1064                                 channel_startpoint.Y = 8;
1065                                 channel_startpoint.X = 18;
1066                                 bottomtick_startpoint.Y = 13;
1067                                 bottomtick_startpoint.X = 32;
1068                                 toptick_startpoint.Y = 13;
1069                                 toptick_startpoint.X = 8;
1070                                 break;
1071                         default:
1072                                 break;
1073                         }
1074
1075                         thumb_area.X = area.X + channel_startpoint.X;
1076                         thumb_area.Y = area.Y + channel_startpoint.Y;
1077                         thumb_area.Height = area.Height - space_from_right - space_from_left;
1078                         thumb_area.Width = 4;
1079
1080                         pixel_len = thumb_area.Height - 11;
1081                         pixels_betweenticks = pixel_len / (tb.Maximum - tb.Minimum);
1082
1083                         /* Convert thumb position from mouse position to value*/
1084                         if (mouse_value) {
1085
1086                                 if (value_pos >= channel_startpoint.Y)
1087                                         value_pos = (int)(((float) (value_pos - channel_startpoint.Y)) / pixels_betweenticks);
1088                                 else
1089                                         value_pos = 0;
1090
1091                                 if (value_pos + tb.Minimum > tb.Maximum)
1092                                         value_pos = tb.Maximum - tb.Minimum;
1093
1094                                 tb.Value = value_pos + tb.Minimum;
1095                         }
1096
1097                         thumb_pos.Width = 13;
1098                         thumb_pos.Height = 29;
1099
1100                         thumb_pos.Y = channel_startpoint.Y + (int) (pixels_betweenticks * (float) value_pos) - (thumb_pos.Height / 3);
1101
1102                         if (thumb_pos.Y < channel_startpoint.Y)
1103                                 thumb_pos.Y = channel_startpoint.Y;
1104
1105                         if (thumb_pos.Y > thumb_area.Bottom - 29)
1106                                 thumb_pos.Y = thumb_area.Bottom - 29;
1107
1108                         /* Draw channel */
1109                         gtk_paint_box (current_style,
1110                                        current_gdk_drawable,
1111                                        (int)state_type,
1112                                        (int)shadow_type,
1113                                        IntPtr.Zero,
1114                                        current_widget,
1115                                        "trough",
1116                                        thumb_area.X,
1117                                        thumb_area.Y,
1118                                        4,
1119                                        thumb_area.Height);
1120
1121                         /* Draw thumb */
1122                         thumb_pos.X = channel_startpoint.X + 2 - thumb_pos.Width / 2;
1123
1124                         shadow_type = ShadowType.Out;
1125
1126                         gtk_paint_slider (current_style,
1127                                           current_gdk_drawable,
1128                                           (int)state_type,
1129                                           (int)shadow_type,
1130                                           IntPtr.Zero,
1131                                           current_widget,
1132                                           "vscale",
1133                                           thumb_pos.X,
1134                                           thumb_pos.Y,
1135                                           thumb_pos.Width,
1136                                           thumb_pos.Height,
1137                                           0);
1138
1139                         pixel_len = thumb_area.Height - 11;
1140                         pixels_betweenticks = pixel_len / ticks;
1141
1142                         /* Draw ticks*/
1143                         thumb_area.X = thumb_pos.X;
1144                         thumb_area.Y = channel_startpoint.Y;
1145                         thumb_area.Width = thumb_pos.Width;
1146
1147                         Region outside = new Region (area);
1148                         outside.Exclude (thumb_area);
1149
1150                         if (outside.IsVisible (clip_rectangle)) {
1151                                 if (pixels_betweenticks > 0 && ((tb.TickStyle & TickStyle.BottomRight) == TickStyle.BottomRight ||
1152                                     ((tb.TickStyle & TickStyle.Both) == TickStyle.Both))) {
1153
1154                                         for (float inc = 0; inc < (pixel_len + 1); inc += pixels_betweenticks)  {
1155                                                 if (inc == 0 || (inc +  pixels_betweenticks) >= pixel_len + 1)
1156                                                         dc.DrawLine (ResPool.GetPen (pen_ticks_color), area.X + bottomtick_startpoint.X , area.Y + bottomtick_startpoint.Y  + inc,
1157                                                                      area.X + bottomtick_startpoint.X  + 3, area.Y + bottomtick_startpoint.Y + inc);
1158                                                 else
1159                                                         dc.DrawLine (ResPool.GetPen (pen_ticks_color), area.X + bottomtick_startpoint.X, area.Y + bottomtick_startpoint.Y  + inc,
1160                                                                      area.X + bottomtick_startpoint.X  + 2, area.Y + bottomtick_startpoint.Y + inc);
1161                                         }
1162                                 }
1163
1164                                 if (pixels_betweenticks > 0 &&  ((tb.TickStyle & TickStyle.TopLeft) == TickStyle.TopLeft ||
1165                                     ((tb.TickStyle & TickStyle.Both) == TickStyle.Both))) {
1166
1167                                         pixel_len = thumb_area.Height - 11;
1168                                         pixels_betweenticks = pixel_len / ticks;
1169
1170                                         for (float inc = 0; inc < (pixel_len + 1); inc += pixels_betweenticks) {
1171                                                 if (inc == 0 || (inc +  pixels_betweenticks) >= pixel_len + 1)
1172                                                         dc.DrawLine (ResPool.GetPen (pen_ticks_color), area.X + toptick_startpoint.X  - 3 , area.Y + toptick_startpoint.Y + inc,
1173                                                                      area.X + toptick_startpoint.X, area.Y + toptick_startpoint.Y + inc);
1174                                                 else
1175                                                         dc.DrawLine (ResPool.GetPen (pen_ticks_color), area.X + toptick_startpoint.X  - 2, area.Y + toptick_startpoint.Y + inc,
1176                                                                      area.X + toptick_startpoint.X, area.Y + toptick_startpoint.Y  + inc);
1177                                         }
1178                                 }
1179                         }
1180
1181                         outside.Dispose ();
1182                 }
1183
1184                 private void DrawTrackBar_Horizontal (Graphics dc, Rectangle clip_rectangle, TrackBar tb,
1185                                                       ref Rectangle thumb_pos, ref Rectangle thumb_area,
1186                                                       float ticks, int value_pos, bool mouse_value)
1187                 {
1188                         Point toptick_startpoint = new Point ();
1189                         Point bottomtick_startpoint = new Point ();
1190                         Point channel_startpoint = new Point ();
1191                         float pixel_len;
1192                         float pixels_betweenticks;
1193                         const int space_from_right = 8;
1194                         const int space_from_left = 8;
1195                         Rectangle area = tb.ClientRectangle;
1196
1197                         Rectangle allocation = new Rectangle (area.X, area.Y, area.Width, area.Height);
1198
1199                         gtk_widget_size_allocate (current_widget, ref allocation);
1200
1201                         gtk_range_set_range (current_widget, tb.Minimum, tb.Maximum);
1202                         gtk_range_set_value (current_widget, tb.Value);
1203
1204                         ShadowType shadow_type = ShadowType.In;
1205
1206                         if (!tb.Enabled)
1207                                 shadow_type = ShadowType.Out;
1208
1209                         StateType state_type = StateType.Normal;
1210
1211                         if (!tb.Enabled)
1212                                 state_type = StateType.Insensitive;
1213                         else
1214                         if (tb.is_entered)
1215                                 state_type = StateType.Prelight;
1216
1217                         switch (tb.TickStyle) {
1218                         case TickStyle.BottomRight:
1219                         case TickStyle.None:
1220                                 channel_startpoint.X = 8;
1221                                 channel_startpoint.Y = 9;
1222                                 bottomtick_startpoint.X = 13;
1223                                 bottomtick_startpoint.Y = 24;
1224                                 break;
1225                         case TickStyle.TopLeft:
1226                                 channel_startpoint.X = 8;
1227                                 channel_startpoint.Y = 19;
1228                                 toptick_startpoint.X = 13;
1229                                 toptick_startpoint.Y = 8;
1230                                 break;
1231                         case TickStyle.Both:
1232                                 channel_startpoint.X = 8;
1233                                 channel_startpoint.Y = 18;
1234                                 bottomtick_startpoint.X = 13;
1235                                 bottomtick_startpoint.Y = 32;
1236                                 toptick_startpoint.X = 13;
1237                                 toptick_startpoint.Y = 8;
1238                                 break;
1239                         default:
1240                                 break;
1241                         }
1242
1243                         thumb_area.X = area.X + channel_startpoint.X;
1244                         thumb_area.Y = area.Y + channel_startpoint.Y;
1245                         thumb_area.Width = area.Width - space_from_right - space_from_left;
1246                         thumb_area.Height = 4;
1247
1248                         pixel_len = thumb_area.Width - 11;
1249                         pixels_betweenticks = pixel_len / (tb.Maximum - tb.Minimum);
1250
1251                         /* Convert thumb position from mouse position to value*/
1252                         if (mouse_value) {
1253                                 if (value_pos >= channel_startpoint.X)
1254                                         value_pos = (int)(((float) (value_pos - channel_startpoint.X)) / pixels_betweenticks);
1255                                 else
1256                                         value_pos = 0;
1257
1258                                 if (value_pos + tb.Minimum > tb.Maximum)
1259                                         value_pos = tb.Maximum - tb.Minimum;
1260
1261                                 tb.Value = value_pos + tb.Minimum;
1262                         }
1263
1264                         thumb_pos.Width = 29;
1265                         thumb_pos.Height = 13;
1266
1267                         thumb_pos.X = channel_startpoint.X + (int) (pixels_betweenticks * (float) value_pos) - (thumb_pos.Width / 3);
1268
1269
1270                         if (thumb_pos.X < channel_startpoint.X)
1271                                 thumb_pos.X = channel_startpoint.X;
1272
1273                         if (thumb_pos.X > thumb_area.Right - 29)
1274                                 thumb_pos.X = thumb_area.Right - 29;
1275
1276                         /* Draw channel */
1277                         gtk_paint_box (current_style,
1278                                        current_gdk_drawable,
1279                                        (int)state_type,
1280                                        (int)shadow_type,
1281                                        IntPtr.Zero,
1282                                        current_widget,
1283                                        "trough",
1284                                        thumb_area.X,
1285                                        thumb_area.Y,
1286                                        thumb_area.Width,
1287                                        4);
1288
1289                         /* Draw thumb */
1290
1291                         thumb_pos.Y = channel_startpoint.Y + 2 - thumb_pos.Height / 2;
1292
1293                         shadow_type = ShadowType.Out;
1294
1295                         gtk_paint_slider (current_style,
1296                                           current_gdk_drawable,
1297                                           (int)state_type,
1298                                           (int)shadow_type,
1299                                           IntPtr.Zero,
1300                                           current_widget,
1301                                           "hscale",
1302                                           thumb_pos.X,
1303                                           thumb_pos.Y,
1304                                           thumb_pos.Width,
1305                                           thumb_pos.Height,
1306                                           0);
1307
1308                         pixel_len = thumb_area.Width - 11;
1309                         pixels_betweenticks = pixel_len / ticks;
1310
1311                         /* Draw ticks*/
1312                         thumb_area.Y = thumb_pos.Y;
1313                         thumb_area.X = channel_startpoint.X;
1314                         thumb_area.Height = thumb_pos.Height;
1315                         Region outside = new Region (area);
1316                         outside.Exclude (thumb_area);
1317
1318                         if (outside.IsVisible (clip_rectangle)) {
1319                                 if (pixels_betweenticks > 0 && ((tb.TickStyle & TickStyle.BottomRight) == TickStyle.BottomRight ||
1320                                     ((tb.TickStyle & TickStyle.Both) == TickStyle.Both))) {
1321
1322                                         for (float inc = 0; inc < (pixel_len + 1); inc += pixels_betweenticks) {
1323                                                 if (inc == 0 || (inc +  pixels_betweenticks) >= pixel_len + 1)
1324                                                         dc.DrawLine (ResPool.GetPen (pen_ticks_color), area.X + bottomtick_startpoint.X + inc , area.Y + bottomtick_startpoint.Y,
1325                                                                      area.X + bottomtick_startpoint.X + inc , area.Y + bottomtick_startpoint.Y + 3);
1326                                                 else
1327                                                         dc.DrawLine (ResPool.GetPen (pen_ticks_color), area.X + bottomtick_startpoint.X + inc, area.Y + bottomtick_startpoint.Y,
1328                                                                      area.X + bottomtick_startpoint.X + inc, area.Y + bottomtick_startpoint.Y + 2);
1329                                         }
1330                                 }
1331
1332                                 if (pixels_betweenticks > 0 && ((tb.TickStyle & TickStyle.TopLeft) == TickStyle.TopLeft ||
1333                                     ((tb.TickStyle & TickStyle.Both) == TickStyle.Both))) {
1334
1335                                         for (float inc = 0; inc < (pixel_len + 1); inc += pixels_betweenticks) {
1336                                                 if (inc == 0 || (inc +  pixels_betweenticks) >= pixel_len + 1)
1337                                                         dc.DrawLine (ResPool.GetPen (pen_ticks_color), area.X + toptick_startpoint.X + inc , area.Y + toptick_startpoint.Y - 3,
1338                                                                      area.X + toptick_startpoint.X + inc , area.Y + toptick_startpoint.Y);
1339                                                 else
1340                                                         dc.DrawLine (ResPool.GetPen (pen_ticks_color), area.X + toptick_startpoint.X + inc, area.Y + toptick_startpoint.Y - 2,
1341                                                                      area.X + toptick_startpoint.X + inc, area.Y + toptick_startpoint.Y);
1342                                         }
1343                                 }
1344                         }
1345
1346                         outside.Dispose ();
1347                 }
1348
1349                 public override void DrawTrackBar (Graphics dc, Rectangle clip_rectangle, TrackBar tb)
1350                 {
1351                         int             value_pos;
1352                         bool            mouse_value;
1353                         float           ticks = (tb.Maximum - tb.Minimum) / tb.tickFrequency; /* N of ticks draw*/
1354                         Rectangle       area;
1355                         Rectangle       thumb_pos = tb.ThumbPos;
1356                         Rectangle       thumb_area = tb.ThumbArea;
1357
1358                         if (tb.thumb_pressed) {
1359                                 value_pos = tb.thumb_mouseclick;
1360                                 mouse_value = true;
1361                         } else {
1362                                 value_pos = tb.Value - tb.Minimum;
1363                                 mouse_value = false;
1364                         }
1365
1366                         area = tb.ClientRectangle;
1367
1368                         SetDrawableAndStyle (tb);
1369
1370                         /* Control Background */
1371                         if (tb.BackColor == DefaultControlBackColor) {
1372                                 dc.FillRectangle (ResPool.GetSolidBrush (ColorControl), clip_rectangle);
1373                         } else {
1374                                 dc.FillRectangle (ResPool.GetSolidBrush (tb.BackColor), clip_rectangle);
1375                         }
1376
1377                         if (tb.Orientation == Orientation.Vertical) {
1378                                 DrawTrackBar_Vertical (dc, clip_rectangle, tb, ref thumb_pos, ref thumb_area,
1379                                                        ticks, value_pos, mouse_value);
1380
1381                         } else {
1382                                 DrawTrackBar_Horizontal (dc, clip_rectangle, tb, ref thumb_pos, ref thumb_area,
1383                                                          ticks, value_pos, mouse_value);
1384                         }
1385
1386                         if (tb.Enabled && tb.Focused)
1387                                 gtk_paint_focus (current_style,
1388                                                  current_gdk_drawable,
1389                                                  (int)StateType.Normal,
1390                                                  IntPtr.Zero,
1391                                                  current_widget,
1392                                                  "trough",
1393                                                  area.X,
1394                                                  area.Y,
1395                                                  area.Width,
1396                                                  area.Height);
1397
1398                         tb.ThumbPos = thumb_pos;
1399                         tb.ThumbArea = thumb_area;
1400
1401                         #if _EXPERIMENTAL_
1402                         DrawDrawableToDC (dc, tb);
1403                         #endif
1404                 }
1405                 #endregion      // TrackBar
1406
1407                 public override void CPDrawButton (Graphics dc, Rectangle rectangle, ButtonState state)
1408                 {
1409                         #if _EXPERIMENTAL_
1410                         SetDrawableAndStyle (rectangle, typeof(ButtonBase), Orientation.Horizontal);
1411                         #endif
1412
1413                         bool is_pushed = false;
1414 //                      bool is_checked = false;
1415 //                      bool is_flat = false;
1416                         bool is_inactive = false;
1417
1418                         if ((state & ButtonState.Pushed) != 0) {
1419                                 is_pushed = true;
1420                         }
1421
1422 //                      if ((state & ButtonState.Checked) != 0) {
1423 //                              is_checked = true;
1424 //                      }
1425 //
1426 //                      if ((state & ButtonState.Flat) != 0) {
1427 //                              is_flat = true;
1428 //                      }
1429
1430                         if ((state & ButtonState.Inactive) != 0) {
1431                                 is_inactive = true;
1432                         }
1433
1434                         IntPtr drawbutton_style = gtk_style_attach (global_gtk_button_style, current_gdk_drawable);  // need it
1435
1436                         StateType state_type = StateType.Normal;
1437                         ShadowType shadow_type = ShadowType.Out;
1438                         string detail = "buttondefault";
1439
1440                         if (is_inactive) {
1441                                 state_type = StateType.Insensitive;
1442                         } else
1443                         if (is_pushed) {
1444                                 state_type = StateType.Active;
1445                                 shadow_type = ShadowType.In;
1446                                 detail = "button";
1447                         }
1448
1449                         gtk_paint_box (drawbutton_style, current_gdk_drawable,
1450                                        (int) state_type,
1451                                        (int) shadow_type,
1452                                        IntPtr.Zero,
1453                                        IntPtr.Zero,
1454                                        detail,
1455                                        rectangle.X, rectangle.Y,
1456                                        rectangle.Width, rectangle.Height);
1457
1458                         #if _EXPERIMENTAL_
1459                         DrawDrawableToDC (dc, rectangle);
1460                         #endif
1461                 }
1462
1463                 /* Scroll button: regular button + direction arrow */
1464                 public override void CPDrawScrollButton (Graphics dc, Rectangle area, ScrollButton scroll_button_type, ButtonState state)
1465                 {
1466                         #if _EXPERIMENTAL_
1467                         Orientation orientation = Orientation.Vertical;
1468                         if (scroll_button_type == ScrollButton.Left || scroll_button_type == ScrollButton.Right)
1469                                 orientation = Orientation.Horizontal;
1470                         SetDrawableAndStyle (area, typeof(ScrollBar), orientation);
1471                         #endif
1472
1473                         bool enabled = (state == ButtonState.Inactive) ? false: true;
1474
1475                         StateType state_type = enabled ? StateType.Normal : StateType.Insensitive;
1476
1477                         DrawScrollButtonPrimitive (dc, area, state, scroll_button_type);
1478
1479                         if (area.Width < 12 || area.Height < 12) /* Cannot see a thing at smaller sizes */
1480                                 return;
1481
1482                         ArrowType arrow_type = 0;
1483
1484                         switch (scroll_button_type) {
1485                         case ScrollButton.Up:
1486                                 arrow_type = ArrowType.Up;
1487                                 break;
1488                         case ScrollButton.Down:
1489                                 arrow_type = ArrowType.Down;
1490                                 break;
1491                         case ScrollButton.Right:
1492                                 arrow_type = ArrowType.Right;
1493                                 break;
1494                         case ScrollButton.Left:
1495                                 arrow_type = ArrowType.Left;
1496                                 break;
1497                         default:
1498                                 break;
1499                         }
1500
1501                         int centerX = area.Left + area.Width / 2;
1502                         int centerY = area.Top + area.Height / 2;
1503                         int arrow_x = 0, arrow_y = 0, arrow_height = 0, arrow_width = 0;
1504
1505                         switch (scroll_button_type) {
1506                         case ScrollButton.Down:
1507                         case ScrollButton.Up:
1508                                 arrow_x = centerX - 4;
1509                                 arrow_y = centerY - 2;
1510                                 arrow_width = 8;
1511                                 arrow_height = 4;
1512                                 break;
1513                         case ScrollButton.Left:
1514                         case ScrollButton.Right:
1515                                 arrow_x = centerX - 2;
1516                                 arrow_y = centerY - 4;
1517                                 arrow_width = 4;
1518                                 arrow_height = 8;
1519                                 break;
1520                         default:
1521                                 break;
1522                         }
1523
1524                         gtk_paint_arrow (current_style,
1525                                          current_gdk_drawable,
1526                                          (int) state_type,
1527                                          (int) ShadowType.Out,
1528                                          IntPtr.Zero,
1529                                          current_widget,
1530                                          "",
1531                                          (int) arrow_type, true,
1532                                          arrow_x,
1533                                          arrow_y,
1534                                          arrow_width, arrow_height);
1535
1536                         current_widget = IntPtr.Zero;
1537
1538                         #if _EXPERIMENTAL_
1539                         DrawDrawableToDC (dc, area);
1540                         #endif
1541                 }
1542
1543                 public void DrawScrollButtonPrimitive (Graphics dc, Rectangle area, ButtonState state, ScrollButton scroll_button_type)
1544                 {
1545                         StateType state_type = StateType.Normal;
1546                         ShadowType shadow_type = ShadowType.Out;
1547
1548                         if ((state & ButtonState.Pushed) == ButtonState.Pushed) {
1549                                 state_type = StateType.Active;
1550                                 shadow_type = ShadowType.In;
1551                         }
1552
1553                         switch (scroll_button_type) {
1554                         case ScrollButton.Left:
1555                         case ScrollButton.Right:
1556                                 gtk_paint_box (current_style,
1557                                                current_gdk_drawable,
1558                                                (int) state_type,
1559                                                (int) shadow_type,
1560                                                IntPtr.Zero,
1561                                                global_gtk_hscrollbar,
1562                                                "stepper",
1563                                                area.X, area.Y,
1564                                                area.Width, area.Height);
1565                                 break;
1566                         case ScrollButton.Up:
1567                         case ScrollButton.Down:
1568                                 gtk_paint_box (current_style,
1569                                                current_gdk_drawable,
1570                                                (int) state_type,
1571                                                (int) shadow_type,
1572                                                IntPtr.Zero,
1573                                                global_gtk_vscrollbar,
1574                                                "stepper",
1575                                                area.X, area.Y,
1576                                                area.Width, area.Height);
1577                                 break;
1578                         }
1579                 }
1580
1581                 private static Color ColorFromGdkColor (GdkColorStruct gtkcolor)
1582                 {
1583                         return Color.FromArgb (255,
1584                                 (gtkcolor.red >> 8)  & 0xff,
1585                                 (gtkcolor.green  >> 8) & 0xff,
1586                                 (gtkcolor.blue >> 8) & 0xff );
1587                 }
1588
1589         } //class
1590 }