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                         IntPtr  Instance;
 102                         IntPtr  ref_count;
 103                         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                         default_font =  new Font (FontFamily.GenericSansSerif, 8.25f);
 387
 388                         LoadSysDefaultColors ();
 389
 390                         always_draw_hotkeys = true;
 391                 }
 392
 393                 public override bool DoubleBufferingSupported {
 394                         #if _EXPERIMENTAL_
 395                         get {return true; }
 396                         #else
 397                         get {return false; }
 398                         #endif
 399                 }
 400
 401                 private void SetDrawableAndStyle (Control control)
 402                 {
 403                         #if _EXPERIMENTAL_
 404                         if (current_gdk_drawable != IntPtr.Zero) {
 405                                 g_object_unref (current_gdk_drawable);
 406                                 current_gdk_drawable = IntPtr.Zero;
 407                         }
 408                         current_gdk_drawable = gdk_pixmap_new (IntPtr.Zero, control.ClientRectangle.Width, control.ClientRectangle.Height, 24);
 409                         #else
 410                         current_gdk_drawable = gdk_window_foreign_new_for_display (gdkdisplay, (uint) control.Handle);
 411                         #endif
 412
 413                         IntPtr tmp_style = IntPtr.Zero;
 414
 415                         if (control is ButtonBase) {
 416                                 tmp_style = global_gtk_button_style;
 417                                 current_widget = global_gtk_button;
 418                         } else
 419                         if (control is ScrollBar) {
 420                                 ScrollBar bar = control as ScrollBar;
 421                                 if (bar.vert) {
 422                                         tmp_style = global_gtk_vscrollbar_style;
 423                                         current_widget = global_gtk_vscrollbar;
 424                                 } else {
 425                                         tmp_style = global_gtk_hscrollbar_style;
 426                                         current_widget = global_gtk_hscrollbar;
 427                                 }
 428                         } else
 429                         if (control is ProgressBar) {
 430                                 tmp_style = global_gtk_progress_bar_style;
 431                                 current_widget = global_gtk_progress_bar;
 432                         } else
 433                         if (control is RadioButton) {
 434                                 tmp_style = global_gtk_radio_button_style;
 435                                 current_widget = global_gtk_radio_button;
 436                         } else
 437                         if (control is CheckBox) {
 438                                 tmp_style = global_gtk_check_button_style;
 439                                 current_widget = global_gtk_check_button;
 440                         } else
 441                         if (control is TrackBar) {
 442                                 TrackBar bar = control as TrackBar;
 443                                 if (bar.Orientation == Orientation.Vertical) {
 444                                         tmp_style = global_gtk_vscale_style;
 445                                         current_widget = global_gtk_vscale;
 446                                 } else {
 447                                         tmp_style = global_gtk_hscale_style;
 448                                         current_widget = global_gtk_hscale;
 449                                 }
 450                         } else
 451                                 tmp_style = global_style;
 452
 453                         current_style = gtk_style_attach (tmp_style, current_gdk_drawable);  // need it
 454                 }
 455
 456                 #if _EXPERIMENTAL_
 457                 private void SetDrawableAndStyle (Rectangle area, Type type, Orientation orientation)
 458                 {
 459                         if (current_gdk_drawable != IntPtr.Zero) {
 460                                 g_object_unref (current_gdk_drawable);
 461                                 current_gdk_drawable = IntPtr.Zero;
 462                         }
 463                         current_gdk_drawable = gdk_pixmap_new (IntPtr.Zero, area.Width, area.Height, 24);
 464
 465                         IntPtr tmp_style = IntPtr.Zero;
 466
 467                         if (type == typeof(ButtonBase)) {
 468                                 tmp_style = global_gtk_button_style;
 469                                 current_widget = global_gtk_button;
 470                         } else
 471                         if (type == typeof(ScrollBar)) {
 472                                 if (orientation == Orientation.Vertical) {
 473                                         tmp_style = global_gtk_vscrollbar_style;
 474                                         current_widget = global_gtk_vscrollbar;
 475                                 } else {
 476                                         tmp_style = global_gtk_hscrollbar_style;
 477                                         current_widget = global_gtk_hscrollbar;
 478                                 }
 479                         } else
 480                         if (type == typeof(ProgressBar)) {
 481                                 tmp_style = global_gtk_progress_bar_style;
 482                                 current_widget = global_gtk_progress_bar;
 483                         } else
 484                         if (type == typeof(RadioButton)) {
 485                                 tmp_style = global_gtk_radio_button_style;
 486                                 current_widget = global_gtk_radio_button;
 487                         } else
 488                         if (type == typeof(CheckBox)) {
 489                                 tmp_style = global_gtk_check_button_style;
 490                                 current_widget = global_gtk_check_button;
 491                         } else
 492                         if (type == typeof(TrackBar)) {
 493                                 if (orientation == Orientation.Vertical) {
 494                                         tmp_style = global_gtk_vscale_style;
 495                                         current_widget = global_gtk_vscale;
 496                                 } else {
 497                                         tmp_style = global_gtk_hscale_style;
 498                                         current_widget = global_gtk_hscale;
 499                                 }
 500                         } else
 501                                 tmp_style = global_style;
 502
 503                         current_style = gtk_style_attach (tmp_style, current_gdk_drawable);  // need it
 504                 }
 505                 #endif
 506
 507                 #if _EXPERIMENTAL_
 508                 private void DrawDrawableToDC (Graphics dc, Control control)
 509                 {
 510                         IntPtr new_pixbuf = gdk_pixbuf_new (0, true, 8, control.ClientRectangle.Width, control.ClientRectangle.Height);
 511
 512                         gdk_pixbuf_get_from_drawable (new_pixbuf,
 513                                                       current_gdk_drawable,
 514                                                       global_color_map,
 515                                                       0,
 516                                                       0,
 517                                                       0,
 518                                                       0,
 519                                                       -1,
 520                                                       -1);
 521
 522                         IntPtr error = IntPtr.Zero;
 523                         IntPtr buffer;
 524                         UIntPtr buffer_size_as_ptr;
 525                         string type = "png";
 526
 527                         bool saved = gdk_pixbuf_save_to_buffer (new_pixbuf, out buffer, out buffer_size_as_ptr, type, out error, IntPtr.Zero);
 528
 529                         if (!saved)
 530                                 return;
 531
 532                         int buffer_size = (int) (uint) buffer_size_as_ptr;
 533                         byte[] result = new byte [buffer_size];
 534                         Marshal.Copy (buffer, result, 0, (int) buffer_size);
 535                         g_free (buffer);
 536                         g_object_unref (new_pixbuf);
 537
 538                         Image image = null;
 539                         using (MemoryStream s = new MemoryStream (result))
 540                                 image = Image.FromStream (s);
 541
 542                         dc.DrawImage (image, control.ClientRectangle);
 543                 }
 544
 545                 private void DrawDrawableToDC (Graphics dc, Rectangle area)
 546                 {
 547                         IntPtr new_pixbuf = gdk_pixbuf_new (0, true, 8, area.Width, area.Height);
 548
 549                         gdk_pixbuf_get_from_drawable (new_pixbuf,
 550                                                       current_gdk_drawable,
 551                                                       global_color_map,
 552                                                       0,
 553                                                       0,
 554                                                       0,
 555                                                       0,
 556                                                       -1,
 557                                                       -1);
 558
 559                         IntPtr error = IntPtr.Zero;
 560                         IntPtr buffer;
 561                         UIntPtr buffer_size_as_ptr;
 562                         string type = "png";
 563
 564                         bool saved = gdk_pixbuf_save_to_buffer (new_pixbuf, out buffer, out buffer_size_as_ptr, type, out error, IntPtr.Zero);
 565
 566                         if (!saved)
 567                                 return;
 568
 569                         int buffer_size = (int) (uint) buffer_size_as_ptr;
 570                         byte[] result = new byte [buffer_size];
 571                         Marshal.Copy (buffer, result, 0, (int) buffer_size);
 572                         g_free (buffer);
 573                         g_object_unref (new_pixbuf);
 574
 575                         Image image = null;
 576                         using (MemoryStream s = new MemoryStream (result))
 577                                 image = Image.FromStream (s);
 578
 579                         dc.DrawImage (image, area);
 580                 }
 581                 #endif
 582
 583                 public override void DrawButtonBase (Graphics dc, Rectangle clip_area, ButtonBase button)
 584                 {
 585                         SetDrawableAndStyle (button);
 586
 587                         // Draw the button: fill rectangle, draw border, etc.
 588                         ButtonBase_DrawButton (button, dc);
 589
 590                         // First, draw the image
 591                         if ((button.image != null) || (button.image_list != null))
 592                                 ButtonBase_DrawImage (button, dc);
 593
 594                         // Draw the focus rectangle
 595                         if (button.has_focus)
 596                                 ButtonBase_DrawFocus (button, dc);
 597
 598                         #if _EXPERIMENTAL_
 599                         DrawDrawableToDC (dc, button);
 600                         #endif
 601
 602                         // Now the text
 603                         if (button.text != null && button.text != String.Empty)
 604                                 ButtonBase_DrawText (button, dc);
 605                 }
 606
 607                 protected override void ButtonBase_DrawButton(ButtonBase button, Graphics dc)
 608                 {
 609                         Rectangle buttonRectangle = button.ClientRectangle;
 610
 611                         StateType state_type = StateType.Normal;
 612                         ShadowType shadow_type = button.flat_style == FlatStyle.Flat ? ShadowType.In : ShadowType.Out;
 613                         string detail = "buttondefault";
 614
 615                         if (((button is CheckBox) && (((CheckBox)button).check_state == CheckState.Checked)) ||
 616                             ((button is RadioButton) && (((RadioButton)button).check_state == CheckState.Checked))) {
 617                                 state_type = StateType.Active;
 618                                 shadow_type = ShadowType.In;
 619                                 detail = "button";
 620                         } else
 621                         if (!button.is_enabled) {
 622                                 state_type = StateType.Insensitive;
 623                         } else
 624                         if (button.is_pressed) {
 625                                 state_type = StateType.Active;
 626                                 shadow_type = ShadowType.In;
 627                                 detail = "button";
 628                         } else
 629                         if (button.is_entered) {
 630                                 state_type = StateType.Prelight;
 631                         }
 632
 633                         if (button.Focused)
 634                                 gtk_widget_grab_focus (global_gtk_button);
 635
 636                         if (button.flat_style == FlatStyle.Flat)
 637                                 gtk_paint_flat_box (current_style,
 638                                                     current_gdk_drawable,
 639                                                     (int) state_type,
 640                                                     (int) shadow_type,
 641                                                     IntPtr.Zero,
 642                                                     global_gtk_button,
 643                                                     detail,
 644                                                     buttonRectangle.X, buttonRectangle.Y,
 645                                                     buttonRectangle.Width, buttonRectangle.Height);
 646                         else
 647                         if (button.flat_style != FlatStyle.Popup || (button.flat_style == FlatStyle.Popup && button.is_entered))
 648                                 gtk_paint_box (current_style,
 649                                                current_gdk_drawable,
 650                                                (int) state_type,
 651                                                (int) shadow_type,
 652                                                IntPtr.Zero,
 653                                                global_gtk_button,
 654                                                detail,
 655                                                buttonRectangle.X, buttonRectangle.Y,
 656                                                buttonRectangle.Width, buttonRectangle.Height);
 657                 }
 658
 659                 protected override void ButtonBase_DrawFocus (ButtonBase button, Graphics dc)
 660                 {
 661                         if (!button.is_enabled)
 662                                 return;
 663
 664                         Rectangle focus_rect = new Rectangle (button.ClientRectangle.X + 4, button.ClientRectangle.Y + 4, button.ClientRectangle.Width - 9, button.ClientRectangle.Height - 9);
 665
 666                         gtk_widget_grab_focus (global_gtk_button);
 667
 668                         gtk_paint_focus (current_style,
 669                                          current_gdk_drawable,
 670                                          (int) StateType.Active,
 671                                          IntPtr.Zero,
 672                                          global_gtk_button,
 673                                          "button",
 674                                          focus_rect.X,
 675                                          focus_rect.Y,
 676                                          focus_rect.Width,
 677                                          focus_rect.Height);
 678                 }
 679
 680                 #region ScrollBar
 681                 public override void DrawScrollBar( Graphics dc, Rectangle clip, ScrollBar bar ) {
 682                         int             scrollbutton_width = bar.scrollbutton_width;
 683                         int             scrollbutton_height = bar.scrollbutton_height;
 684                         Rectangle       first_arrow_area;
 685                         Rectangle       second_arrow_area;
 686                         Rectangle       thumb_pos;
 687
 688                         SetDrawableAndStyle (bar);
 689
 690                         Rectangle allocation = new Rectangle (bar.ClientRectangle.X, bar.ClientRectangle.Y, bar.ClientRectangle.Width, bar.ClientRectangle.Height);
 691
 692                         // fix for artefacts
 693                         Color fix_color = bar.Parent != null ? bar.Parent.BackColor : ColorControl;
 694
 695                         if (bar.vert) {
 696                                 gtk_widget_size_allocate (global_gtk_vscrollbar, ref allocation);
 697
 698                                 // fix for artefacts
 699                                 dc.FillRectangle (ResPool.GetSolidBrush (fix_color),
 700                                                   bar.ClientRectangle.X, bar.ClientRectangle.Y, bar.ClientRectangle.Width, 3);
 701                                 dc.FillRectangle (ResPool.GetSolidBrush (fix_color),
 702                                                   bar.ClientRectangle.X, bar.ClientRectangle.Bottom - 4, bar.ClientRectangle.Width, 3);
 703                         } else {
 704                                 gtk_widget_size_allocate (global_gtk_hscrollbar, ref allocation);
 705
 706                                 // fix for artefacts
 707                                 dc.FillRectangle (ResPool.GetSolidBrush (fix_color),
 708                                                   bar.ClientRectangle.X, bar.ClientRectangle.Y, 3, bar.ClientRectangle.Height);
 709                                 dc.FillRectangle (ResPool.GetSolidBrush (fix_color),
 710                                                   bar.ClientRectangle.Right - 4, bar.ClientRectangle.Y, 3, bar.ClientRectangle.Height);
 711                         }
 712
 713                         thumb_pos = bar.ThumbPos;
 714
 715                         if ( bar.vert ) {
 716                                 first_arrow_area = new Rectangle( 0, 0, bar.Width, scrollbutton_height + 1 );
 717                                 bar.FirstArrowArea = first_arrow_area;
 718
 719                                 second_arrow_area = new Rectangle( 0, bar.ClientRectangle.Height - scrollbutton_height - 1, bar.Width, scrollbutton_height + 1 );
 720                                 bar.SecondArrowArea = second_arrow_area;
 721
 722                                 thumb_pos.Width = bar.Width;
 723                                 bar.ThumbPos = thumb_pos;
 724
 725                                 ScrollBar_Vertical_Draw_ThumbMoving_None (scrollbutton_height, bar, clip, dc);
 726
 727                                 /* Buttons */
 728                                 if ( clip.IntersectsWith( first_arrow_area ) )
 729                                         CPDrawScrollButton( dc, first_arrow_area, ScrollButton.Up, bar.firstbutton_state );
 730                                 if ( clip.IntersectsWith( second_arrow_area ) )
 731                                         CPDrawScrollButton( dc, second_arrow_area, ScrollButton.Down, bar.secondbutton_state );
 732                         } else {
 733                                 first_arrow_area = new Rectangle( 0, 0, scrollbutton_width + 1, bar.Height );
 734                                 bar.FirstArrowArea = first_arrow_area;
 735
 736                                 second_arrow_area = new Rectangle( bar.ClientRectangle.Width - scrollbutton_width - 1, 0, scrollbutton_width + 1, bar.Height );
 737                                 bar.SecondArrowArea = second_arrow_area;
 738
 739                                 thumb_pos.Height = bar.Height;
 740                                 bar.ThumbPos = thumb_pos;
 741
 742                                 /* Background */
 743                                 ScrollBar_Horizontal_Draw_ThumbMoving_None (scrollbutton_width, bar, clip, dc);
 744
 745                                 /* Buttons */
 746                                 if ( clip.IntersectsWith( first_arrow_area ) )
 747                                         CPDrawScrollButton( dc, first_arrow_area, ScrollButton.Left, bar.firstbutton_state );
 748                                 if ( clip.IntersectsWith( second_arrow_area ) )
 749                                         CPDrawScrollButton( dc, second_arrow_area, ScrollButton.Right, bar.secondbutton_state );
 750                         }
 751
 752                         /* Thumb */
 753                         ScrollBar_DrawThumb( bar, thumb_pos, clip, dc );
 754
 755                         #if _EXPERIMENTAL_
 756                         DrawDrawableToDC (dc, bar);
 757                         #endif
 758                 }
 759
 760                 protected override void ScrollBar_DrawThumb( ScrollBar bar, Rectangle thumb_pos, Rectangle clip, Graphics dc ) {
 761                         if ( bar.Enabled)
 762                                 DrawScrollBarThumb( dc, thumb_pos, bar );
 763                 }
 764
 765                 protected override void ScrollBar_Vertical_Draw_ThumbMoving_None (int scrollbutton_height, ScrollBar bar, Rectangle clip, Graphics dc)
 766                 {
 767                         Rectangle r = new Rectangle (0,
 768                                                      scrollbutton_height, bar.ClientRectangle.Width, bar.ClientRectangle.Height - (scrollbutton_height * 2));
 769                         gtk_paint_box (current_style,
 770                                        current_gdk_drawable,
 771                                        (int) StateType.Active,
 772                                        (int) ShadowType.In,
 773                                        IntPtr.Zero,
 774                                        global_gtk_vscrollbar,
 775                                        "vscrollbar",
 776                                        r.X, r.Y,
 777                                        r.Width, r.Height);
 778                 }
 779
 780                 protected override void ScrollBar_Horizontal_Draw_ThumbMoving_None (int scrollbutton_width, ScrollBar bar, Rectangle clip, Graphics dc)
 781                 {
 782                         Rectangle r = new Rectangle (scrollbutton_width,
 783                                                      0, bar.ClientRectangle.Width - (scrollbutton_width * 2), bar.ClientRectangle.Height);
 784
 785                         gtk_paint_box (current_style,
 786                                        current_gdk_drawable,
 787                                        (int) StateType.Active,
 788                                        (int) ShadowType.In,
 789                                        IntPtr.Zero,
 790                                        global_gtk_hscrollbar,
 791                                        "hscrollbar",
 792                                        r.X, r.Y,
 793                                        r.Width, r.Height);
 794                 }
 795
 796                 private void DrawScrollBarThumb( Graphics dc, Rectangle area, ScrollBar bar ) {
 797                         IntPtr gtk_scrollbar = bar.vert ? global_gtk_vscrollbar : global_gtk_hscrollbar;
 798
 799                         gtk_paint_box (current_style,
 800                                        current_gdk_drawable,
 801                                        (int) StateType.Active,
 802                                        (int) ShadowType.Out,
 803                                        IntPtr.Zero,
 804                                        gtk_scrollbar,
 805                                        "slider",
 806                                        area.X, area.Y,
 807                                        area.Width, area.Height);
 808                 }
 809                 #endregion      // ScrollBar
 810
 811                 #region ProgressBar
 812                 public override void DrawProgressBar (Graphics dc, Rectangle clip_rect, ProgressBar ctrl)
 813                 {
 814                         Rectangle       client_area = ctrl.client_area;
 815                         int             barpos_pixels;
 816
 817                         SetDrawableAndStyle (ctrl);
 818
 819                         // draw background
 820                         gtk_paint_box (current_style,
 821                                        current_gdk_drawable,
 822                                        (int) StateType.Normal,
 823                                        (int) ShadowType.In,
 824                                        IntPtr.Zero,
 825                                        global_gtk_progress_bar,
 826                                        "trough",
 827                                        ctrl.ClientRectangle.X,
 828                                        ctrl.ClientRectangle.Y,
 829                                        ctrl.ClientRectangle.Width,
 830                                        ctrl.ClientRectangle.Height);
 831
 832                         // don't draw the bar if Value is = 0
 833                         if (ctrl.Value <= 0)
 834                                 return;
 835
 836                         int value = ctrl.Value;
 837
 838                         if (value > ctrl.Maximum)
 839                                 value = ctrl.Maximum;
 840
 841                         if (value == ctrl.Maximum)
 842                                 barpos_pixels = client_area.Width + 2;
 843                         else
 844                                 barpos_pixels = (((value - ctrl.Minimum) * client_area.Width) / (ctrl.Maximum - ctrl.Minimum)) + 1;
 845
 846                         gtk_paint_box (current_style,
 847                                        current_gdk_drawable,
 848                                        (int) StateType.Prelight,
 849                                        (int) ShadowType.Out,
 850                                        IntPtr.Zero,
 851                                        global_gtk_progress_bar,
 852                                        "bar",
 853                                        client_area.X - 1, client_area.Y - 1,
 854                                        barpos_pixels, client_area.Height + 2);
 855
 856                         #if _EXPERIMENTAL_
 857                         DrawDrawableToDC (dc, ctrl);
 858                         #endif
 859                 }
 860                 #endregion      // ProgressBar
 861
 862                 #region RadioButton
 863                 protected override void RadioButton_DrawButton (RadioButton radio_button, Graphics dc, ButtonState state, Rectangle radiobutton_rectangle)
 864                 {
 865                         // we currently don't care for flat or popup radio buttons
 866                         if (radio_button.appearance == Appearance.Button) {
 867                                 DrawButtonBase (dc, radio_button.ClientRectangle, radio_button);
 868                         } else {
 869                                 DrawRadioButton (dc, radio_button, state, radiobutton_rectangle);
 870                         }
 871                 }
 872
 873                 private void DrawRadioButton (Graphics dc, RadioButton radio_button, ButtonState state, Rectangle radiobutton_rectangle)
 874                 {
 875                         SetDrawableAndStyle (radio_button);
 876
 877                         ShadowType shadow_type;
 878
 879                         if (!radio_button.Enabled)
 880                                 shadow_type = ShadowType.Out;
 881                         else
 882                                 shadow_type = radio_button.Checked ? ShadowType.In : ShadowType.EtchedIn;
 883
 884                         StateType state_type = StateType.Normal;
 885
 886                         if (!radio_button.Enabled)
 887                                 state_type = StateType.Insensitive;
 888                         else
 889                         if (radio_button.is_pressed)
 890                                 state_type = StateType.Active;
 891                         else
 892                         if (radio_button.is_entered)
 893                                 state_type = StateType.Prelight;
 894
 895                         gtk_paint_option (current_style,
 896                                           current_gdk_drawable,
 897                                           (int) state_type,
 898                                           (int) shadow_type,
 899                                           IntPtr.Zero,
 900                                           global_gtk_radio_button,
 901                                           "radiobutton",
 902                                           radiobutton_rectangle.X,
 903                                           radiobutton_rectangle.Y,
 904                                           radiobutton_rectangle.Width,
 905                                           radiobutton_rectangle.Height);
 906
 907                         #if _EXPERIMENTAL_
 908                         DrawDrawableToDC (dc, radio_button);
 909                         #endif
 910                 }
 911
 912                 protected override void RadioButton_DrawText (RadioButton radio_button, Rectangle text_rectangle, Graphics dc, StringFormat text_format)
 913                 {
 914                         if (radio_button.Appearance != Appearance.Button)
 915                                 base.RadioButton_DrawText (radio_button, text_rectangle, dc, text_format);
 916                 }
 917
 918                 protected override void RadioButton_DrawFocus (RadioButton radio_button, Graphics dc, Rectangle text_rectangle)
 919                 {
 920                         if (radio_button.Focused && radio_button.appearance != Appearance.Button) {
 921                                 gtk_paint_focus (current_style,
 922                                                  current_gdk_drawable,
 923                                                  (int) StateType.Active,
 924                                                  IntPtr.Zero,
 925                                                  global_gtk_radio_button,
 926                                                  "radiobutton",
 927                                                  text_rectangle.X,
 928                                                  text_rectangle.Y,
 929                                                  text_rectangle.Width,
 930                                                  text_rectangle.Height);
 931                         }
 932
 933                         #if _EXPERIMENTAL_
 934                         DrawDrawableToDC (dc, radio_button);
 935                         #endif
 936                 }
 937                 #endregion      // RadioButton
 938
 939                 #region CheckBox
 940                 protected override void CheckBox_DrawCheckBox (Graphics dc, CheckBox checkbox, ButtonState state, Rectangle checkbox_rectangle)
 941                 {
 942                         // render as per normal button
 943                         if (checkbox.appearance == Appearance.Button) {
 944                                 DrawButtonBase (dc, checkbox.ClientRectangle, checkbox);
 945                         } else {
 946                                 InternalDrawCheckBox (dc, checkbox, state, checkbox_rectangle);
 947                         }
 948                 }
 949
 950                 private void InternalDrawCheckBox (Graphics dc, CheckBox checkbox, ButtonState state, Rectangle checkbox_rectangle)
 951                 {
 952                         SetDrawableAndStyle (checkbox);
 953
 954                         ShadowType shadow_type;
 955
 956                         if (!checkbox.Enabled)
 957                                 shadow_type = ShadowType.Out;
 958                         else
 959                                 shadow_type = checkbox.Checked ? ShadowType.In : ShadowType.EtchedIn;
 960
 961                         StateType state_type = StateType.Normal;
 962
 963                         if (!checkbox.Enabled)
 964                                 state_type = StateType.Insensitive;
 965                         else
 966                         if (checkbox.is_pressed)
 967                                 state_type = StateType.Active;
 968                         else
 969                         if (checkbox.is_entered)
 970                                 state_type = StateType.Prelight;
 971
 972                         gtk_paint_check (current_style,
 973                                          current_gdk_drawable,
 974                                          (int) state_type,
 975                                          (int) shadow_type,
 976                                          IntPtr.Zero,
 977                                          global_gtk_check_button,
 978                                          "checkbutton",
 979                                          checkbox_rectangle.X,
 980                                          checkbox_rectangle.Y,
 981                                          checkbox_rectangle.Width,
 982                                          checkbox_rectangle.Height);
 983
 984                         #if _EXPERIMENTAL_
 985                         DrawDrawableToDC (dc, checkbox);
 986                         #endif
 987                 }
 988
 989                 protected override void CheckBox_DrawText (CheckBox checkbox, Rectangle text_rectangle, Graphics dc, StringFormat text_format)
 990                 {
 991                         if (checkbox.Appearance != Appearance.Button)
 992                                 base.CheckBox_DrawText (checkbox, text_rectangle, dc, text_format);
 993                 }
 994
 995                 protected override void CheckBox_DrawFocus( CheckBox checkbox, Graphics dc, Rectangle text_rectangle )
 996                 {
 997                         if (checkbox.Focused && checkbox.appearance != Appearance.Button) {
 998                                 gtk_paint_focus (current_style,
 999                                                  current_gdk_drawable,
1000                                                  (int) StateType.Active,
1001                                                  IntPtr.Zero,
1002                                                  global_gtk_check_button,
1003                                                  "checkbutton",
1004                                                  text_rectangle.X,
1005                                                  text_rectangle.Y,
1006                                                  text_rectangle.Width,
1007                                                  text_rectangle.Height);
1008                         }
1009
1010                         #if _EXPERIMENTAL_
1011                         DrawDrawableToDC (dc, checkbox);
1012                         #endif
1013                 }
1014                 #endregion      // CheckBox
1015
1016                 #region TrackBar
1017                 private void DrawTrackBar_Vertical (Graphics dc, Rectangle clip_rectangle, TrackBar tb,
1018                                                     ref Rectangle thumb_pos, ref Rectangle thumb_area,
1019                                                     float ticks, int value_pos, bool mouse_value)
1020                 {
1021                         Point toptick_startpoint = new Point ();
1022                         Point bottomtick_startpoint = new Point ();
1023                         Point channel_startpoint = new Point ();
1024                         float pixel_len;
1025                         float pixels_betweenticks;
1026                         const int space_from_right = 8;
1027                         const int space_from_left = 8;
1028                         Rectangle area = tb.ClientRectangle;
1029
1030                         Rectangle allocation = new Rectangle (area.X, area.Y, area.Width, area.Height);
1031
1032                         gtk_widget_size_allocate (current_widget, ref allocation);
1033
1034                         gtk_range_set_range (current_widget, tb.Minimum, tb.Maximum);
1035                         gtk_range_set_value (current_widget, tb.Value);
1036
1037                         ShadowType shadow_type = ShadowType.In;
1038
1039                         if (!tb.Enabled)
1040                                 shadow_type = ShadowType.Out;
1041
1042                         StateType state_type = StateType.Normal;
1043
1044                         if (!tb.Enabled)
1045                                 state_type = StateType.Insensitive;
1046                         else
1047                         if (tb.is_entered)
1048                                 state_type = StateType.Prelight;
1049
1050                         switch (tb.TickStyle)   {
1051                         case TickStyle.BottomRight:
1052                         case TickStyle.None:
1053                                 channel_startpoint.Y = 8;
1054                                 channel_startpoint.X = 9;
1055                                 bottomtick_startpoint.Y = 13;
1056                                 bottomtick_startpoint.X = 24;
1057                                 break;
1058                         case TickStyle.TopLeft:
1059                                 channel_startpoint.Y = 8;
1060                                 channel_startpoint.X = 19;
1061                                 toptick_startpoint.Y = 13;
1062                                 toptick_startpoint.X = 8;
1063                                 break;
1064                         case TickStyle.Both:
1065                                 channel_startpoint.Y = 8;
1066                                 channel_startpoint.X = 18;
1067                                 bottomtick_startpoint.Y = 13;
1068                                 bottomtick_startpoint.X = 32;
1069                                 toptick_startpoint.Y = 13;
1070                                 toptick_startpoint.X = 8;
1071                                 break;
1072                         default:
1073                                 break;
1074                         }
1075
1076                         thumb_area.X = area.X + channel_startpoint.X;
1077                         thumb_area.Y = area.Y + channel_startpoint.Y;
1078                         thumb_area.Height = area.Height - space_from_right - space_from_left;
1079                         thumb_area.Width = 4;
1080
1081                         pixel_len = thumb_area.Height - 11;
1082                         pixels_betweenticks = pixel_len / (tb.Maximum - tb.Minimum);
1083
1084                         /* Convert thumb position from mouse position to value*/
1085                         if (mouse_value) {
1086
1087                                 if (value_pos >= channel_startpoint.Y)
1088                                         value_pos = (int)(((float) (value_pos - channel_startpoint.Y)) / pixels_betweenticks);
1089                                 else
1090                                         value_pos = 0;
1091
1092                                 if (value_pos + tb.Minimum > tb.Maximum)
1093                                         value_pos = tb.Maximum - tb.Minimum;
1094
1095                                 tb.Value = value_pos + tb.Minimum;
1096                         }
1097
1098                         thumb_pos.Width = 13;
1099                         thumb_pos.Height = 29;
1100
1101                         thumb_pos.Y = channel_startpoint.Y + (int) (pixels_betweenticks * (float) value_pos) - (thumb_pos.Height / 3);
1102
1103                         if (thumb_pos.Y < channel_startpoint.Y)
1104                                 thumb_pos.Y = channel_startpoint.Y;
1105
1106                         if (thumb_pos.Y > thumb_area.Bottom - 29)
1107                                 thumb_pos.Y = thumb_area.Bottom - 29;
1108
1109                         /* Draw channel */
1110                         gtk_paint_box (current_style,
1111                                        current_gdk_drawable,
1112                                        (int)state_type,
1113                                        (int)shadow_type,
1114                                        IntPtr.Zero,
1115                                        current_widget,
1116                                        "trough",
1117                                        thumb_area.X,
1118                                        thumb_area.Y,
1119                                        4,
1120                                        thumb_area.Height);
1121
1122                         /* Draw thumb */
1123                         thumb_pos.X = channel_startpoint.X + 2 - thumb_pos.Width / 2;
1124
1125                         shadow_type = ShadowType.Out;
1126
1127                         gtk_paint_slider (current_style,
1128                                           current_gdk_drawable,
1129                                           (int)state_type,
1130                                           (int)shadow_type,
1131                                           IntPtr.Zero,
1132                                           current_widget,
1133                                           "vscale",
1134                                           thumb_pos.X,
1135                                           thumb_pos.Y,
1136                                           thumb_pos.Width,
1137                                           thumb_pos.Height,
1138                                           0);
1139
1140                         pixel_len = thumb_area.Height - 11;
1141                         pixels_betweenticks = pixel_len / ticks;
1142
1143                         /* Draw ticks*/
1144                         thumb_area.X = thumb_pos.X;
1145                         thumb_area.Y = channel_startpoint.Y;
1146                         thumb_area.Width = thumb_pos.Width;
1147
1148                         Region outside = new Region (area);
1149                         outside.Exclude (thumb_area);
1150
1151                         if (outside.IsVisible (clip_rectangle)) {
1152                                 if (pixels_betweenticks > 0 && ((tb.TickStyle & TickStyle.BottomRight) == TickStyle.BottomRight ||
1153                                     ((tb.TickStyle & TickStyle.Both) == TickStyle.Both))) {
1154
1155                                         for (float inc = 0; inc < (pixel_len + 1); inc += pixels_betweenticks)  {
1156                                                 if (inc == 0 || (inc +  pixels_betweenticks) >= pixel_len + 1)
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  + 3, area.Y + bottomtick_startpoint.Y + inc);
1159                                                 else
1160                                                         dc.DrawLine (ResPool.GetPen (pen_ticks_color), area.X + bottomtick_startpoint.X, area.Y + bottomtick_startpoint.Y  + inc,
1161                                                                      area.X + bottomtick_startpoint.X  + 2, area.Y + bottomtick_startpoint.Y + inc);
1162                                         }
1163                                 }
1164
1165                                 if (pixels_betweenticks > 0 &&  ((tb.TickStyle & TickStyle.TopLeft) == TickStyle.TopLeft ||
1166                                     ((tb.TickStyle & TickStyle.Both) == TickStyle.Both))) {
1167
1168                                         pixel_len = thumb_area.Height - 11;
1169                                         pixels_betweenticks = pixel_len / ticks;
1170
1171                                         for (float inc = 0; inc < (pixel_len + 1); inc += pixels_betweenticks) {
1172                                                 if (inc == 0 || (inc +  pixels_betweenticks) >= pixel_len + 1)
1173                                                         dc.DrawLine (ResPool.GetPen (pen_ticks_color), area.X + toptick_startpoint.X  - 3 , area.Y + toptick_startpoint.Y + inc,
1174                                                                      area.X + toptick_startpoint.X, area.Y + toptick_startpoint.Y + inc);
1175                                                 else
1176                                                         dc.DrawLine (ResPool.GetPen (pen_ticks_color), area.X + toptick_startpoint.X  - 2, area.Y + toptick_startpoint.Y + inc,
1177                                                                      area.X + toptick_startpoint.X, area.Y + toptick_startpoint.Y  + inc);
1178                                         }
1179                                 }
1180                         }
1181
1182                         outside.Dispose ();
1183                 }
1184
1185                 private void DrawTrackBar_Horizontal (Graphics dc, Rectangle clip_rectangle, TrackBar tb,
1186                                                       ref Rectangle thumb_pos, ref Rectangle thumb_area,
1187                                                       float ticks, int value_pos, bool mouse_value)
1188                 {
1189                         Point toptick_startpoint = new Point ();
1190                         Point bottomtick_startpoint = new Point ();
1191                         Point channel_startpoint = new Point ();
1192                         float pixel_len;
1193                         float pixels_betweenticks;
1194                         const int space_from_right = 8;
1195                         const int space_from_left = 8;
1196                         Rectangle area = tb.ClientRectangle;
1197
1198                         Rectangle allocation = new Rectangle (area.X, area.Y, area.Width, area.Height);
1199
1200                         gtk_widget_size_allocate (current_widget, ref allocation);
1201
1202                         gtk_range_set_range (current_widget, tb.Minimum, tb.Maximum);
1203                         gtk_range_set_value (current_widget, tb.Value);
1204
1205                         ShadowType shadow_type = ShadowType.In;
1206
1207                         if (!tb.Enabled)
1208                                 shadow_type = ShadowType.Out;
1209
1210                         StateType state_type = StateType.Normal;
1211
1212                         if (!tb.Enabled)
1213                                 state_type = StateType.Insensitive;
1214                         else
1215                         if (tb.is_entered)
1216                                 state_type = StateType.Prelight;
1217
1218                         switch (tb.TickStyle) {
1219                         case TickStyle.BottomRight:
1220                         case TickStyle.None:
1221                                 channel_startpoint.X = 8;
1222                                 channel_startpoint.Y = 9;
1223                                 bottomtick_startpoint.X = 13;
1224                                 bottomtick_startpoint.Y = 24;
1225                                 break;
1226                         case TickStyle.TopLeft:
1227                                 channel_startpoint.X = 8;
1228                                 channel_startpoint.Y = 19;
1229                                 toptick_startpoint.X = 13;
1230                                 toptick_startpoint.Y = 8;
1231                                 break;
1232                         case TickStyle.Both:
1233                                 channel_startpoint.X = 8;
1234                                 channel_startpoint.Y = 18;
1235                                 bottomtick_startpoint.X = 13;
1236                                 bottomtick_startpoint.Y = 32;
1237                                 toptick_startpoint.X = 13;
1238                                 toptick_startpoint.Y = 8;
1239                                 break;
1240                         default:
1241                                 break;
1242                         }
1243
1244                         thumb_area.X = area.X + channel_startpoint.X;
1245                         thumb_area.Y = area.Y + channel_startpoint.Y;
1246                         thumb_area.Width = area.Width - space_from_right - space_from_left;
1247                         thumb_area.Height = 4;
1248
1249                         pixel_len = thumb_area.Width - 11;
1250                         pixels_betweenticks = pixel_len / (tb.Maximum - tb.Minimum);
1251
1252                         /* Convert thumb position from mouse position to value*/
1253                         if (mouse_value) {
1254                                 if (value_pos >= channel_startpoint.X)
1255                                         value_pos = (int)(((float) (value_pos - channel_startpoint.X)) / pixels_betweenticks);
1256                                 else
1257                                         value_pos = 0;
1258
1259                                 if (value_pos + tb.Minimum > tb.Maximum)
1260                                         value_pos = tb.Maximum - tb.Minimum;
1261
1262                                 tb.Value = value_pos + tb.Minimum;
1263                         }
1264
1265                         thumb_pos.Width = 29;
1266                         thumb_pos.Height = 13;
1267
1268                         thumb_pos.X = channel_startpoint.X + (int) (pixels_betweenticks * (float) value_pos) - (thumb_pos.Width / 3);
1269
1270
1271                         if (thumb_pos.X < channel_startpoint.X)
1272                                 thumb_pos.X = channel_startpoint.X;
1273
1274                         if (thumb_pos.X > thumb_area.Right - 29)
1275                                 thumb_pos.X = thumb_area.Right - 29;
1276
1277                         /* Draw channel */
1278                         gtk_paint_box (current_style,
1279                                        current_gdk_drawable,
1280                                        (int)state_type,
1281                                        (int)shadow_type,
1282                                        IntPtr.Zero,
1283                                        current_widget,
1284                                        "trough",
1285                                        thumb_area.X,
1286                                        thumb_area.Y,
1287                                        thumb_area.Width,
1288                                        4);
1289
1290                         /* Draw thumb */
1291
1292                         thumb_pos.Y = channel_startpoint.Y + 2 - thumb_pos.Height / 2;
1293
1294                         shadow_type = ShadowType.Out;
1295
1296                         gtk_paint_slider (current_style,
1297                                           current_gdk_drawable,
1298                                           (int)state_type,
1299                                           (int)shadow_type,
1300                                           IntPtr.Zero,
1301                                           current_widget,
1302                                           "hscale",
1303                                           thumb_pos.X,
1304                                           thumb_pos.Y,
1305                                           thumb_pos.Width,
1306                                           thumb_pos.Height,
1307                                           0);
1308
1309                         pixel_len = thumb_area.Width - 11;
1310                         pixels_betweenticks = pixel_len / ticks;
1311
1312                         /* Draw ticks*/
1313                         thumb_area.Y = thumb_pos.Y;
1314                         thumb_area.X = channel_startpoint.X;
1315                         thumb_area.Height = thumb_pos.Height;
1316                         Region outside = new Region (area);
1317                         outside.Exclude (thumb_area);
1318
1319                         if (outside.IsVisible (clip_rectangle)) {
1320                                 if (pixels_betweenticks > 0 && ((tb.TickStyle & TickStyle.BottomRight) == TickStyle.BottomRight ||
1321                                     ((tb.TickStyle & TickStyle.Both) == TickStyle.Both))) {
1322
1323                                         for (float inc = 0; inc < (pixel_len + 1); inc += pixels_betweenticks) {
1324                                                 if (inc == 0 || (inc +  pixels_betweenticks) >= pixel_len + 1)
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 + 3);
1327                                                 else
1328                                                         dc.DrawLine (ResPool.GetPen (pen_ticks_color), area.X + bottomtick_startpoint.X + inc, area.Y + bottomtick_startpoint.Y,
1329                                                                      area.X + bottomtick_startpoint.X + inc, area.Y + bottomtick_startpoint.Y + 2);
1330                                         }
1331                                 }
1332
1333                                 if (pixels_betweenticks > 0 && ((tb.TickStyle & TickStyle.TopLeft) == TickStyle.TopLeft ||
1334                                     ((tb.TickStyle & TickStyle.Both) == TickStyle.Both))) {
1335
1336                                         for (float inc = 0; inc < (pixel_len + 1); inc += pixels_betweenticks) {
1337                                                 if (inc == 0 || (inc +  pixels_betweenticks) >= pixel_len + 1)
1338                                                         dc.DrawLine (ResPool.GetPen (pen_ticks_color), area.X + toptick_startpoint.X + inc , area.Y + toptick_startpoint.Y - 3,
1339                                                                      area.X + toptick_startpoint.X + inc , area.Y + toptick_startpoint.Y);
1340                                                 else
1341                                                         dc.DrawLine (ResPool.GetPen (pen_ticks_color), area.X + toptick_startpoint.X + inc, area.Y + toptick_startpoint.Y - 2,
1342                                                                      area.X + toptick_startpoint.X + inc, area.Y + toptick_startpoint.Y);
1343                                         }
1344                                 }
1345                         }
1346
1347                         outside.Dispose ();
1348                 }
1349
1350                 public override void DrawTrackBar (Graphics dc, Rectangle clip_rectangle, TrackBar tb)
1351                 {
1352                         int             value_pos;
1353                         bool            mouse_value;
1354                         float           ticks = (tb.Maximum - tb.Minimum) / tb.tickFrequency; /* N of ticks draw*/
1355                         Rectangle       area;
1356                         Rectangle       thumb_pos = tb.ThumbPos;
1357                         Rectangle       thumb_area = tb.ThumbArea;
1358
1359                         if (tb.thumb_pressed) {
1360                                 value_pos = tb.thumb_mouseclick;
1361                                 mouse_value = true;
1362                         } else {
1363                                 value_pos = tb.Value - tb.Minimum;
1364                                 mouse_value = false;
1365                         }
1366
1367                         area = tb.ClientRectangle;
1368
1369                         SetDrawableAndStyle (tb);
1370
1371                         /* Control Background */
1372                         if (tb.BackColor == DefaultControlBackColor) {
1373                                 dc.FillRectangle (ResPool.GetSolidBrush (ColorControl), clip_rectangle);
1374                         } else {
1375                                 dc.FillRectangle (ResPool.GetSolidBrush (tb.BackColor), clip_rectangle);
1376                         }
1377
1378                         if (tb.Orientation == Orientation.Vertical) {
1379                                 DrawTrackBar_Vertical (dc, clip_rectangle, tb, ref thumb_pos, ref thumb_area,
1380                                                        ticks, value_pos, mouse_value);
1381
1382                         } else {
1383                                 DrawTrackBar_Horizontal (dc, clip_rectangle, tb, ref thumb_pos, ref thumb_area,
1384                                                          ticks, value_pos, mouse_value);
1385                         }
1386
1387                         if (tb.Enabled && tb.Focused)
1388                                 gtk_paint_focus (current_style,
1389                                                  current_gdk_drawable,
1390                                                  (int)StateType.Normal,
1391                                                  IntPtr.Zero,
1392                                                  current_widget,
1393                                                  "trough",
1394                                                  area.X,
1395                                                  area.Y,
1396                                                  area.Width,
1397                                                  area.Height);
1398
1399                         tb.ThumbPos = thumb_pos;
1400                         tb.ThumbArea = thumb_area;
1401
1402                         #if _EXPERIMENTAL_
1403                         DrawDrawableToDC (dc, tb);
1404                         #endif
1405                 }
1406                 #endregion      // TrackBar
1407
1408                 public override void CPDrawButton (Graphics dc, Rectangle rectangle, ButtonState state)
1409                 {
1410                         #if _EXPERIMENTAL_
1411                         SetDrawableAndStyle (rectangle, typeof(ButtonBase), Orientation.Horizontal);
1412                         #endif
1413
1414                         bool is_pushed = false;
1415 //                      bool is_checked = false;
1416 //                      bool is_flat = false;
1417                         bool is_inactive = false;
1418
1419                         if ((state & ButtonState.Pushed) != 0) {
1420                                 is_pushed = true;
1421                         }
1422
1423 //                      if ((state & ButtonState.Checked) != 0) {
1424 //                              is_checked = true;
1425 //                      }
1426 //
1427 //                      if ((state & ButtonState.Flat) != 0) {
1428 //                              is_flat = true;
1429 //                      }
1430
1431                         if ((state & ButtonState.Inactive) != 0) {
1432                                 is_inactive = true;
1433                         }
1434
1435                         IntPtr drawbutton_style = gtk_style_attach (global_gtk_button_style, current_gdk_drawable);  // need it
1436
1437                         StateType state_type = StateType.Normal;
1438                         ShadowType shadow_type = ShadowType.Out;
1439                         string detail = "buttondefault";
1440
1441                         if (is_inactive) {
1442                                 state_type = StateType.Insensitive;
1443                         } else
1444                         if (is_pushed) {
1445                                 state_type = StateType.Active;
1446                                 shadow_type = ShadowType.In;
1447                                 detail = "button";
1448                         }
1449
1450                         gtk_paint_box (drawbutton_style, current_gdk_drawable,
1451                                        (int) state_type,
1452                                        (int) shadow_type,
1453                                        IntPtr.Zero,
1454                                        IntPtr.Zero,
1455                                        detail,
1456                                        rectangle.X, rectangle.Y,
1457                                        rectangle.Width, rectangle.Height);
1458
1459                         #if _EXPERIMENTAL_
1460                         DrawDrawableToDC (dc, rectangle);
1461                         #endif
1462                 }
1463
1464                 /* Scroll button: regular button + direction arrow */
1465                 public override void CPDrawScrollButton (Graphics dc, Rectangle area, ScrollButton scroll_button_type, ButtonState state)
1466                 {
1467                         #if _EXPERIMENTAL_
1468                         Orientation orientation = Orientation.Vertical;
1469                         if (scroll_button_type == ScrollButton.Left || scroll_button_type == ScrollButton.Right)
1470                                 orientation = Orientation.Horizontal;
1471                         SetDrawableAndStyle (area, typeof(ScrollBar), orientation);
1472                         #endif
1473
1474                         bool enabled = (state == ButtonState.Inactive) ? false: true;
1475
1476                         StateType state_type = enabled ? StateType.Normal : StateType.Insensitive;
1477
1478                         DrawScrollButtonPrimitive (dc, area, state, scroll_button_type);
1479
1480                         if (area.Width < 12 || area.Height < 12) /* Cannot see a thing at smaller sizes */
1481                                 return;
1482
1483                         ArrowType arrow_type = 0;
1484
1485                         switch (scroll_button_type) {
1486                         case ScrollButton.Up:
1487                                 arrow_type = ArrowType.Up;
1488                                 break;
1489                         case ScrollButton.Down:
1490                                 arrow_type = ArrowType.Down;
1491                                 break;
1492                         case ScrollButton.Right:
1493                                 arrow_type = ArrowType.Right;
1494                                 break;
1495                         case ScrollButton.Left:
1496                                 arrow_type = ArrowType.Left;
1497                                 break;
1498                         default:
1499                                 break;
1500                         }
1501
1502                         int centerX = area.Left + area.Width / 2;
1503                         int centerY = area.Top + area.Height / 2;
1504                         int arrow_x = 0, arrow_y = 0, arrow_height = 0, arrow_width = 0;
1505
1506                         switch (scroll_button_type) {
1507                         case ScrollButton.Down:
1508                         case ScrollButton.Up:
1509                                 arrow_x = centerX - 4;
1510                                 arrow_y = centerY - 2;
1511                                 arrow_width = 8;
1512                                 arrow_height = 4;
1513                                 break;
1514                         case ScrollButton.Left:
1515                         case ScrollButton.Right:
1516                                 arrow_x = centerX - 2;
1517                                 arrow_y = centerY - 4;
1518                                 arrow_width = 4;
1519                                 arrow_height = 8;
1520                                 break;
1521                         default:
1522                                 break;
1523                         }
1524
1525                         gtk_paint_arrow (current_style,
1526                                          current_gdk_drawable,
1527                                          (int) state_type,
1528                                          (int) ShadowType.Out,
1529                                          IntPtr.Zero,
1530                                          current_widget,
1531                                          "",
1532                                          (int) arrow_type, true,
1533                                          arrow_x,
1534                                          arrow_y,
1535                                          arrow_width, arrow_height);
1536
1537                         current_widget = IntPtr.Zero;
1538
1539                         #if _EXPERIMENTAL_
1540                         DrawDrawableToDC (dc, area);
1541                         #endif
1542                 }
1543
1544                 public void DrawScrollButtonPrimitive (Graphics dc, Rectangle area, ButtonState state, ScrollButton scroll_button_type)
1545                 {
1546                         StateType state_type = StateType.Normal;
1547                         ShadowType shadow_type = ShadowType.Out;
1548
1549                         if ((state & ButtonState.Pushed) == ButtonState.Pushed) {
1550                                 state_type = StateType.Active;
1551                                 shadow_type = ShadowType.In;
1552                         }
1553
1554                         switch (scroll_button_type) {
1555                         case ScrollButton.Left:
1556                         case ScrollButton.Right:
1557                                 gtk_paint_box (current_style,
1558                                                current_gdk_drawable,
1559                                                (int) state_type,
1560                                                (int) shadow_type,
1561                                                IntPtr.Zero,
1562                                                global_gtk_hscrollbar,
1563                                                "stepper",
1564                                                area.X, area.Y,
1565                                                area.Width, area.Height);
1566                                 break;
1567                         case ScrollButton.Up:
1568                         case ScrollButton.Down:
1569                                 gtk_paint_box (current_style,
1570                                                current_gdk_drawable,
1571                                                (int) state_type,
1572                                                (int) shadow_type,
1573                                                IntPtr.Zero,
1574                                                global_gtk_vscrollbar,
1575                                                "stepper",
1576                                                area.X, area.Y,
1577                                                area.Width, area.Height);
1578                                 break;
1579                         }
1580                 }
1581
1582                 private static Color ColorFromGdkColor (GdkColorStruct gtkcolor)
1583                 {
1584                         return Color.FromArgb (255,
1585                                 (gtkcolor.red >> 8)  & 0xff,
1586                                 (gtkcolor.green  >> 8) & 0xff,
1587                                 (gtkcolor.blue >> 8) & 0xff );
1588                 }
1589
1590         } //class
1591 }