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,
   5 // distribute, sublicense, and/or sell copies of the Software, and to
   6 // permit persons to whom the Software is furnished to do so, subject to
   7 // the following conditions:
   8 //
   9 // The above copyright notice and this permission notice shall be
  10 // included in all copies or substantial portions of the Software.
  11 //
  12 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  13 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  14 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  15 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  16 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  17 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  18 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  19 //
  20 // Copyright (c) 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 no a device context. We should inverstigate if we
  39 //              we can encapsulate a dc in a gtkwindow.
  40
  41
  42 // NOT COMPLETE
  43
  44 using System;
  45 using System.Drawing;
  46 using System.Drawing.Drawing2D;
  47 using System.Drawing.Imaging;
  48 using System.Reflection;
  49 using System.Runtime.InteropServices;
  50
  51 namespace System.Windows.Forms
  52 {
  53         internal class ThemeGtk : ThemeWin32Classic
  54         {
  55                 /* GTK enums */
  56                 internal enum StateType
  57                 {
  58                         Normal,
  59                         Active,
  60                         Prelight,
  61                         Selected,
  62                         Insensitive,
  63                 }
  64
  65                 internal enum ShadowType
  66                 {
  67                         None,
  68                         In,
  69                         Out,
  70                         EtchedIn,
  71                         EtchedOut,
  72                 }
  73
  74                 internal enum ArrowType
  75                 {
  76                         Up,
  77                         Down,
  78                         Left,
  79                         Right,
  80                 }
  81
  82                 /* Structs */
  83                 [StructLayout(LayoutKind.Sequential)]
  84                 internal struct GdkColorStruct
  85                 {
  86                         internal int pixel;
  87                         internal short red;
  88                         internal short green;
  89                         internal short blue;
  90                 }
  91
  92                 [StructLayout(LayoutKind.Sequential)]
  93                 internal struct GtkStyleStruct
  94                 {
  95                         [MarshalAs(System.Runtime.InteropServices.UnmanagedType.ByValArray, SizeConst=12)]
  96                         internal byte[] obj; /* GObject is 12 bytes*/
  97                         [MarshalAs(System.Runtime.InteropServices.UnmanagedType.ByValArray, SizeConst=5)]
  98                         internal GdkColorStruct[] fg;
  99                         [MarshalAs(System.Runtime.InteropServices.UnmanagedType.ByValArray, SizeConst=5)]
 100                         internal GdkColorStruct[] bg;
 101                         [MarshalAs(System.Runtime.InteropServices.UnmanagedType.ByValArray, SizeConst=5)]
 102                         internal GdkColorStruct[] light;
 103                         [MarshalAs(System.Runtime.InteropServices.UnmanagedType.ByValArray, SizeConst=5)]
 104                         internal GdkColorStruct[] dark;
 105                         [MarshalAs(System.Runtime.InteropServices.UnmanagedType.ByValArray, SizeConst=5)]
 106                         internal GdkColorStruct[] mid;
 107                         [MarshalAs(System.Runtime.InteropServices.UnmanagedType.ByValArray, SizeConst=5)]
 108                         internal GdkColorStruct[] text;
 109                         [MarshalAs(System.Runtime.InteropServices.UnmanagedType.ByValArray, SizeConst=5)]
 110                         internal GdkColorStruct[] baseclr;
 111                         [MarshalAs(System.Runtime.InteropServices.UnmanagedType.ByValArray, SizeConst=5)]
 112                         internal GdkColorStruct[] text_aa;              /* Halfway between text/base */
 113
 114                         internal GdkColorStruct black;
 115                         internal GdkColorStruct white;
 116
 117                         /* TODO: There is more stuff that we will add when we need it*/
 118                 }
 119
 120                 /* GDK imports */
 121                 [DllImport("libgdk-x11-2.0.so")]
 122                 internal static extern IntPtr gdk_display_manager_get ();
 123
 124                 [DllImport("libgdk-x11-2.0.so")]
 125                 internal static extern IntPtr gdk_display_manager_get_default_display (IntPtr display_manager);
 126
 127                 [DllImport("libgdk-x11-2.0.so")]
 128                 internal static extern void gdk_display_manager_set_default_display (IntPtr display_manager, IntPtr display);
 129
 130                 [DllImport("libgdk-x11-2.0.so")]
 131                 internal static extern IntPtr gdk_x11_display_get_xdisplay (IntPtr display);
 132
 133                 [DllImport("libgdk-x11-2.0.so")]
 134                 static extern IntPtr gdk_window_foreign_new_for_display (IntPtr display, uint anid);
 135
 136                 [DllImport("libgdk-x11-2.0.so")]
 137                 static extern bool gdk_init_check(out int argc, string argv);
 138
 139                 /* GTK imports */
 140                 [DllImport("libgtk-x11-2.0.so")]
 141                 static extern bool gtk_init_check (out int argc, string argv);
 142
 143                 [DllImport("libgtk-x11-2.0.so")]
 144                 static extern IntPtr gtk_adjustment_new (double value, double lower, double upper, double step_increment, double page_increment, double page_size);
 145
 146                 [DllImport("libgtk-x11-2.0.so")]
 147                 static extern IntPtr gtk_rc_get_style (IntPtr widget);
 148
 149                 [DllImport("libgtk-x11-2.0.so")]
 150                 static extern IntPtr gtk_vscrollbar_new(IntPtr adjustment);
 151
 152                 [DllImport("libgtk-x11-2.0.so")]
 153                 static extern IntPtr gtk_hscrollbar_new(IntPtr adjustment);
 154
 155                 [DllImport("libgtk-x11-2.0.so")]
 156                 static extern IntPtr gtk_style_attach (IntPtr raw, IntPtr window);
 157
 158                 [DllImport("libgtk-x11-2.0.so")]
 159                 static extern IntPtr gtk_rc_style_new ();
 160
 161                 [DllImport("libgtk-x11-2.0.so")]
 162                 static extern IntPtr gtk_invisible_new ();
 163
 164                 [DllImport("libgtk-x11-2.0.so")]
 165                 static extern void gtk_widget_ensure_style (IntPtr raw);
 166
 167                 [DllImport("libgtk-x11-2.0.so")]
 168                 static extern IntPtr gtk_widget_get_style (IntPtr raw);
 169
 170                 [DllImport("libgtk-x11-2.0.so")]
 171                 static extern void gtk_style_detach (IntPtr raw);
 172
 173                 [DllImport("libgtk-x11-2.0.so")]
 174                 static extern IntPtr  gtk_button_new ();
 175
 176                 /* GTK Drawing */
 177                 [DllImport("libgtk-x11-2.0.so")]
 178                 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);
 179
 180                 [DllImport("libgtk-x11-2.0.so")]
 181                 static extern void gtk_paint_arrow (IntPtr style, IntPtr window, int state_type, int shadow_type,
 182                                                     IntPtr area, IntPtr widget, string detail, int arrow_type, bool fill, int x, int y, int width, int height);
 183
 184                 [DllImport("libgtk-x11-2.0.so")]
 185                 static extern void gtk_paint_slider (IntPtr style, IntPtr window, int state_type, int shadow_type,
 186                                                      IntPtr area, IntPtr widget, string detail, int x, int y, int width, int height, int orientation);
 187
 188                 [DllImport("libgtk-x11-2.0.so")]
 189                 static extern void gtk_paint_box (IntPtr style, IntPtr window, int state_type, int shadow_type,
 190                                                   IntPtr area, IntPtr widget, string detail, int x, int y, int width, int height);
 191
 192                 [DllImport("libgtk-x11-2.0.so")]
 193                 static extern void gtk_paint_flat_box (IntPtr style, IntPtr window, int state_type, int shadow_type,
 194                                                        IntPtr area, IntPtr widget, string detail, int x, int y, int width, int height);
 195
 196                 [DllImport("libgtk-x11-2.0.so")]
 197                 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);
 198
 199                 [DllImport("libgtk-x11-2.0.so")]
 200                 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);
 201
 202                 [DllImport("libgtk-x11-2.0.so")]
 203                 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);
 204
 205                 [DllImport("libgtk-x11-2.0.so")]
 206                 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);
 207
 208                 [DllImport("libgtk-x11-2.0.so")]
 209                 static extern void gtk_widget_size_allocate (IntPtr widget, ref Rectangle allocation);
 210
 211                 [DllImport("libgtk-x11-2.0.so")]
 212                 static extern void gtk_widget_set_size_request (IntPtr widget, int width, int height);
 213
 214                 /* Data */
 215                 static protected IntPtr dispmgr;
 216                 static protected IntPtr gdkdisplay;
 217                 static protected IntPtr widget;
 218                 static protected IntPtr style;
 219                 static protected SolidBrush br_buttonface;
 220                 static protected SolidBrush br_buttontext;
 221
 222                 IntPtr global_gtk_button = gtk_button_new();
 223                 IntPtr global_gtk_vscrollbar = IntPtr.Zero;
 224                 IntPtr global_gtk_hscrollbar = IntPtr.Zero;
 225
 226                 IntPtr current_gdk_window = IntPtr.Zero;
 227                 IntPtr current_style = IntPtr.Zero;
 228
 229                 public static void InitGtk ()
 230                 {
 231                         Console.WriteLine ("ThemeGtk Init");
 232                         int argc = 0;
 233                         string argv = "";
 234
 235                         gdk_init_check (out argc, argv);
 236
 237                         dispmgr =  gdk_display_manager_get ();
 238                         gdkdisplay =  gdk_display_manager_get_default_display (dispmgr);
 239                         gtk_init_check (out argc, argv);
 240
 241                         widget = gtk_invisible_new ();
 242                         gtk_widget_ensure_style (widget);
 243                         style = gtk_widget_get_style (widget);
 244
 245                         XplatUIX11.GetInstance().SetDisplay (gdk_x11_display_get_xdisplay (gdkdisplay));
 246                 }
 247
 248                 public void LoadSysDefaultColors ()
 249                 {
 250                         GtkStyleStruct style_struct;
 251
 252                         style_struct = (GtkStyleStruct) Marshal.PtrToStructure (style, typeof (GtkStyleStruct));
 253                         defaultWindowBackColor = ColorFromGdkColor (style_struct.bg[0]);
 254                         defaultWindowForeColor = ColorFromGdkColor (style_struct.fg[0]);
 255                 }
 256
 257                 public ThemeGtk () : base ()
 258                 {
 259                         Console.WriteLine ("ThemeGtk constructor");
 260                         InitGtk ();
 261                         default_font =  new Font (FontFamily.GenericSansSerif, 8.25f);
 262
 263                         LoadSysDefaultColors ();
 264
 265                         br_buttonface = new SolidBrush (defaultWindowBackColor);
 266                         br_buttontext = new SolidBrush (defaultWindowForeColor);
 267                         always_draw_hotkeys = true;
 268
 269                         IntPtr adj = gtk_adjustment_new (0, 0, 0, 0, 0, 0);
 270                         global_gtk_vscrollbar = gtk_vscrollbar_new (adj);
 271                         global_gtk_hscrollbar = gtk_hscrollbar_new (adj);
 272                 }
 273
 274                 public override bool DoubleBufferingSupported {
 275                         get {return false; }
 276                 }
 277
 278 //              public override Color ColorControl {
 279 //                      get { return Color.Blue;}
 280 //              }
 281
 282                 protected override void ButtonBase_DrawButton(ButtonBase button, Graphics dc)
 283                 {
 284                         Rectangle buttonRectangle = button.ClientRectangle;
 285
 286                         IntPtr gdkwindow = gdk_window_foreign_new_for_display (gdkdisplay, (uint) button.Handle);
 287
 288                         IntPtr style;
 289
 290                         style = gtk_rc_get_style (global_gtk_button);
 291                         style = gtk_style_attach (style, gdkwindow);  // need it
 292
 293                         StateType state_type = StateType.Normal;
 294                         ShadowType shadow_type = button.flat_style == FlatStyle.Flat ? ShadowType.In : ShadowType.Out;
 295                         string detail = "buttondefault";
 296
 297                         if (!button.is_enabled) {
 298                                 state_type = StateType.Insensitive;
 299                         } else
 300                         if (button.is_pressed) {
 301                                 state_type = StateType.Active;
 302                                 shadow_type = ShadowType.In;
 303                                 detail = "button";
 304                         } else
 305                         if (button.is_entered) {
 306                                 state_type = StateType.Prelight;
 307                         }
 308
 309                         if (button.flat_style == FlatStyle.Flat)
 310                                 gtk_paint_flat_box (style, gdkwindow,
 311                                                     (int) state_type,
 312                                                     (int) shadow_type,
 313                                                     IntPtr.Zero,
 314                                                     IntPtr.Zero,
 315                                                     detail,
 316                                                     buttonRectangle.X, buttonRectangle.Y,
 317                                                     buttonRectangle.Width, buttonRectangle.Height);
 318                         else
 319                         if (button.flat_style != FlatStyle.Popup || (button.flat_style == FlatStyle.Popup && button.is_entered))
 320                                 gtk_paint_box (style, gdkwindow,
 321                                                (int) state_type,
 322                                                (int) shadow_type,
 323                                                IntPtr.Zero,
 324                                                IntPtr.Zero,
 325                                                detail,
 326                                                buttonRectangle.X, buttonRectangle.Y,
 327                                                buttonRectangle.Width, buttonRectangle.Height);
 328                 }
 329
 330                 protected override void ButtonBase_DrawFocus( ButtonBase button, Graphics dc ) {
 331
 332                         if ( !button.is_enabled)
 333                                 return;
 334
 335                         Rectangle focus_rect = new Rectangle( button.ClientRectangle.X + 4, button.ClientRectangle.Y + 4, button.ClientRectangle.Width - 9, button.ClientRectangle.Height - 9 );
 336
 337                         IntPtr gdkwindow = gdk_window_foreign_new_for_display (gdkdisplay, (uint) button.Handle);
 338
 339                         IntPtr style;
 340
 341                         style = gtk_rc_get_style (global_gtk_button);
 342                         style = gtk_style_attach (style, gdkwindow);  // need it
 343
 344                         gtk_paint_focus (style,
 345                                          gdkwindow,
 346                                          (int) StateType.Active,
 347                                          IntPtr.Zero,
 348                                          IntPtr.Zero,
 349                                          "button",
 350                                          focus_rect.X,
 351                                          focus_rect.Y,
 352                                          focus_rect.Width,
 353                                          focus_rect.Height);
 354                 }
 355
 356                 #region ScrollBar
 357                 public override void DrawScrollBar( Graphics dc, Rectangle clip, ScrollBar bar ) {
 358                         int             scrollbutton_width = bar.scrollbutton_width;
 359                         int             scrollbutton_height = bar.scrollbutton_height;
 360                         Rectangle       first_arrow_area;
 361                         Rectangle       second_arrow_area;
 362                         Rectangle       thumb_pos;
 363
 364                         IntPtr gdkwindow = gdk_window_foreign_new_for_display (gdkdisplay, (uint) bar.Handle);
 365
 366                         IntPtr style;
 367
 368                         Rectangle allocation = new Rectangle (bar.ClientRectangle.X, bar.ClientRectangle.Y, bar.ClientRectangle.Width, bar.ClientRectangle.Height);
 369
 370                         // fix for artefacts
 371                         Color fix_color = bar.Parent != null ? bar.Parent.BackColor : ColorControl;
 372
 373                         if (bar.vert) {
 374                                 style = gtk_rc_get_style (global_gtk_vscrollbar);
 375
 376                                 gtk_widget_size_allocate (global_gtk_vscrollbar, ref allocation);
 377
 378                                 // fix for artefacts
 379                                 dc.FillRectangle (ResPool.GetSolidBrush (fix_color),
 380                                                   bar.ClientRectangle.X, bar.ClientRectangle.Y, bar.ClientRectangle.Width, 3);
 381                                 dc.FillRectangle (ResPool.GetSolidBrush (fix_color),
 382                                                   bar.ClientRectangle.X, bar.ClientRectangle.Bottom - 4, bar.ClientRectangle.Width, 3);
 383                         } else {
 384                                 style = gtk_rc_get_style (global_gtk_hscrollbar);
 385
 386                                 gtk_widget_size_allocate (global_gtk_hscrollbar, ref allocation);
 387
 388                                 // fix for artefacts
 389                                 dc.FillRectangle (ResPool.GetSolidBrush (fix_color),
 390                                                   bar.ClientRectangle.X, bar.ClientRectangle.Y, 3, bar.ClientRectangle.Height);
 391                                 dc.FillRectangle (ResPool.GetSolidBrush (fix_color),
 392                                                   bar.ClientRectangle.Right - 4, bar.ClientRectangle.Y, 3, bar.ClientRectangle.Height);
 393                         }
 394
 395                         style = gtk_style_attach (style, gdkwindow);  // need it
 396
 397                         current_gdk_window = gdkwindow;
 398                         current_style = style;
 399
 400                         thumb_pos = bar.ThumbPos;
 401
 402                         if ( bar.vert ) {
 403                                 first_arrow_area = new Rectangle( 0, 0, bar.Width, scrollbutton_height + 1 );
 404                                 bar.FirstArrowArea = first_arrow_area;
 405
 406                                 second_arrow_area = new Rectangle( 0, bar.ClientRectangle.Height - scrollbutton_height - 1, bar.Width, scrollbutton_height + 1 );
 407                                 bar.SecondArrowArea = second_arrow_area;
 408
 409                                 thumb_pos.Width = bar.Width;
 410                                 bar.ThumbPos = thumb_pos;
 411
 412                                 ScrollBar_Vertical_Draw_ThumbMoving_None (scrollbutton_height, bar, clip, dc);
 413
 414                                 /* Buttons */
 415                                 if ( clip.IntersectsWith( first_arrow_area ) )
 416                                         CPDrawScrollButton( dc, first_arrow_area, ScrollButton.Up, bar.firstbutton_state );
 417                                 if ( clip.IntersectsWith( second_arrow_area ) )
 418                                         CPDrawScrollButton( dc, second_arrow_area, ScrollButton.Down, bar.secondbutton_state );
 419                         } else {
 420                                 first_arrow_area = new Rectangle( 0, 0, scrollbutton_width + 1, bar.Height );
 421                                 bar.FirstArrowArea = first_arrow_area;
 422
 423                                 second_arrow_area = new Rectangle( bar.ClientRectangle.Width - scrollbutton_width - 1, 0, scrollbutton_width + 1, bar.Height );
 424                                 bar.SecondArrowArea = second_arrow_area;
 425
 426                                 thumb_pos.Height = bar.Height;
 427                                 bar.ThumbPos = thumb_pos;
 428
 429                                 /* Background */
 430                                 ScrollBar_Horizontal_Draw_ThumbMoving_None (scrollbutton_width, bar, clip, dc);
 431
 432                                 /* Buttons */
 433                                 if ( clip.IntersectsWith( first_arrow_area ) )
 434                                         CPDrawScrollButton( dc, first_arrow_area, ScrollButton.Left, bar.firstbutton_state );
 435                                 if ( clip.IntersectsWith( second_arrow_area ) )
 436                                         CPDrawScrollButton( dc, second_arrow_area, ScrollButton.Right, bar.secondbutton_state );
 437                         }
 438
 439                         /* Thumb */
 440                         ScrollBar_DrawThumb( bar, thumb_pos, clip, dc );
 441                 }
 442
 443                 protected override void ScrollBar_DrawThumb( ScrollBar bar, Rectangle thumb_pos, Rectangle clip, Graphics dc ) {
 444                         if ( bar.Enabled)
 445                                 DrawScrollBarThumb( dc, thumb_pos, bar );
 446                 }
 447
 448                 protected override void ScrollBar_Vertical_Draw_ThumbMoving_None (int scrollbutton_height, ScrollBar bar, Rectangle clip, Graphics dc)
 449                 {
 450                         Rectangle r = new Rectangle (0,
 451                                                      scrollbutton_height, bar.ClientRectangle.Width, bar.ClientRectangle.Height - (scrollbutton_height * 2));
 452                         gtk_paint_box (style,
 453                                        current_gdk_window,
 454                                        (int) StateType.Active,
 455                                        (int) ShadowType.In,
 456                                        IntPtr.Zero,
 457                                        global_gtk_vscrollbar,
 458                                        "vscrollbar",
 459                                        r.X, r.Y,
 460                                        r.Width, r.Height);
 461                 }
 462
 463                 protected override void ScrollBar_Horizontal_Draw_ThumbMoving_None (int scrollbutton_width, ScrollBar bar, Rectangle clip, Graphics dc)
 464                 {
 465                         Rectangle r = new Rectangle (scrollbutton_width,
 466                                                      0, bar.ClientRectangle.Width - (scrollbutton_width * 2), bar.ClientRectangle.Height);
 467
 468                         gtk_paint_box (style,
 469                                        current_gdk_window,
 470                                        (int) StateType.Active,
 471                                        (int) ShadowType.In,
 472                                        IntPtr.Zero,
 473                                        global_gtk_hscrollbar,
 474                                        "hscrollbar",
 475                                        r.X, r.Y,
 476                                        r.Width, r.Height);
 477                 }
 478
 479                 private void DrawScrollBarThumb( Graphics dc, Rectangle area, ScrollBar bar ) {
 480                         IntPtr gtk_scrollbar = bar.vert ? global_gtk_vscrollbar : global_gtk_hscrollbar;
 481
 482                         gtk_paint_box (style,
 483                                        current_gdk_window,
 484                                        (int) StateType.Active,
 485                                        (int) ShadowType.Out,
 486                                        IntPtr.Zero,
 487                                        gtk_scrollbar,
 488                                        "slider",
 489                                        area.X, area.Y,
 490                                        area.Width, area.Height);
 491
 492 //                      if ( bar.vert ) {
 493 //                              if ( area.Height > 12 ) {
 494 //                                      int mid_y = area.Y + ( area.Height / 2 );
 495 //                                      int mid_x = area.X + ( area.Width / 2 );
 496 //
 497 //                                      // TODO: add 2 lines
 498 //                                      gtk_paint_hline(current_style,
 499 //                                                      current_gdk_window,
 500 //                                                      (int) StateType.Normal,
 501 //                                                      IntPtr.Zero,
 502 //                                                      IntPtr.Zero,
 503 //                                                      "through",
 504 //                                                      mid_x - 4,
 505 //                                                      mid_x + 4,
 506 //                                                      mid_y);
 507 //                              }
 508 //                      } else {
 509 //                              // draw grip lines only if there is enough space
 510 //                              if ( area.Width > 12 ) {
 511 //                                      int mid_x = area.X +  ( area.Width / 2 );
 512 //                                      int mid_y = area.Y +  ( area.Height / 2 );
 513 //
 514 //                                      // TODO: add 2 lines
 515 //                                      gtk_paint_vline(current_style,
 516 //                                                      current_gdk_window,
 517 //                                                      (int) StateType.Normal,
 518 //                                                      IntPtr.Zero,
 519 //                                                      IntPtr.Zero,
 520 //                                                      "through",
 521 //                                                      mid_y - 4,
 522 //                                                      mid_y + 4,
 523 //                                                      mid_x);
 524 //                              }
 525 //                      }
 526                 }
 527                 #endregion      // ScrollBar
 528
 529                 public override void CPDrawButton (Graphics graphics, Rectangle rectangle, ButtonState state)
 530                 {
 531                         bool is_pushed = false;
 532 //                      bool is_checked = false;
 533 //                      bool is_flat = false;
 534                         bool is_inactive = false;
 535
 536                         if ((state & ButtonState.Pushed) != 0) {
 537                                 is_pushed = true;
 538                         }
 539
 540 //                      if ((state & ButtonState.Checked) != 0) {
 541 //                              is_checked = true;
 542 //                      }
 543 //
 544 //                      if ((state & ButtonState.Flat) != 0) {
 545 //                              is_flat = true;
 546 //                      }
 547
 548                         if ((state & ButtonState.Inactive) != 0) {
 549                                 is_inactive = true;
 550                         }
 551
 552                         IntPtr style;
 553
 554                         style = gtk_rc_get_style (global_gtk_button);
 555                         style = gtk_style_attach (style, current_gdk_window);  // need it
 556
 557                         StateType state_type = StateType.Normal;
 558                         ShadowType shadow_type = ShadowType.Out;
 559                         string detail = "buttondefault";
 560
 561                         if (is_inactive) {
 562                                 state_type = StateType.Insensitive;
 563                         } else
 564                         if (is_pushed) {
 565                                 state_type = StateType.Active;
 566                                 shadow_type = ShadowType.In;
 567                                 detail = "button";
 568                         }
 569
 570                         gtk_paint_box (style, current_gdk_window,
 571                                        (int) state_type,
 572                                        (int) shadow_type,
 573                                        IntPtr.Zero,
 574                                        IntPtr.Zero,
 575                                        detail,
 576                                        rectangle.X, rectangle.Y,
 577                                        rectangle.Width, rectangle.Height);
 578                 }
 579
 580                 /* Scroll button: regular button + direction arrow */
 581                 public override void CPDrawScrollButton (Graphics dc, Rectangle area, ScrollButton scroll_button_type, ButtonState state)
 582                 {
 583                         bool enabled = (state == ButtonState.Inactive) ? false: true;
 584
 585                         StateType state_type = enabled ? StateType.Normal : StateType.Insensitive;
 586
 587                         DrawScrollButtonPrimitive (dc, area, state, scroll_button_type);
 588
 589                         if (area.Width < 12 || area.Height < 12) /* Cannot see a thing at smaller sizes */
 590                                 return;
 591
 592                         ArrowType arrow_type = 0;
 593
 594                         switch (scroll_button_type) {
 595                         case ScrollButton.Up:
 596                                 arrow_type = ArrowType.Up;
 597                                 break;
 598                         case ScrollButton.Down:
 599                                 arrow_type = ArrowType.Down;
 600                                 break;
 601                         case ScrollButton.Right:
 602                                 arrow_type = ArrowType.Right;
 603                                 break;
 604                         case ScrollButton.Left:
 605                                 arrow_type = ArrowType.Left;
 606                                 break;
 607                         default:
 608                                 break;
 609                         }
 610
 611                         int centerX = area.Left + area.Width / 2;
 612                         int centerY = area.Top + area.Height / 2;
 613                         int arrow_x = 0, arrow_y = 0, arrow_height = 0, arrow_width = 0;
 614
 615                         switch (scroll_button_type) {
 616                         case ScrollButton.Down:
 617                         case ScrollButton.Up:
 618                                 arrow_x = centerX - 4;
 619                                 arrow_y = centerY - 2;
 620                                 arrow_width = 8;
 621                                 arrow_height = 4;
 622                                 break;
 623                         case ScrollButton.Left:
 624                         case ScrollButton.Right:
 625                                 arrow_x = centerX - 2;
 626                                 arrow_y = centerY - 4;
 627                                 arrow_width = 4;
 628                                 arrow_height = 8;
 629                                 break;
 630                         default:
 631                                 break;
 632                         }
 633
 634                         gtk_paint_arrow (style,
 635                                          current_gdk_window,
 636                                          (int) state_type,
 637                                          (int) ShadowType.Out,
 638                                          IntPtr.Zero,
 639                                          IntPtr.Zero,
 640                                          "",
 641                                          (int) arrow_type, true,
 642                                          arrow_x,
 643                                          arrow_y,
 644                                          arrow_width, arrow_height);
 645                 }
 646
 647                 public void DrawScrollButtonPrimitive (Graphics dc, Rectangle area, ButtonState state, ScrollButton scroll_button_type)
 648                 {
 649                         StateType state_type = StateType.Normal;
 650                         ShadowType shadow_type = ShadowType.Out;
 651
 652                         if ((state & ButtonState.Pushed) == ButtonState.Pushed) {
 653                                 state_type = StateType.Active;
 654                                 shadow_type = ShadowType.In;
 655                         }
 656
 657                         switch (scroll_button_type) {
 658                         case ScrollButton.Left:
 659                         case ScrollButton.Right:
 660                                 gtk_paint_box (style,
 661                                                current_gdk_window,
 662                                                (int) state_type,
 663                                                (int) shadow_type,
 664                                                IntPtr.Zero,
 665                                                global_gtk_hscrollbar,
 666                                                "stepper",
 667                                                area.X, area.Y,
 668                                                area.Width, area.Height);
 669                                 break;
 670                         case ScrollButton.Up:
 671                         case ScrollButton.Down:
 672                                 gtk_paint_box (style,
 673                                                current_gdk_window,
 674                                                (int) state_type,
 675                                                (int) shadow_type,
 676                                                IntPtr.Zero,
 677                                                global_gtk_vscrollbar,
 678                                                "stepper",
 679                                                area.X, area.Y,
 680                                                area.Width, area.Height);
 681                                 break;
 682                         }
 683                 }
 684
 685                 private static Color ColorFromGdkColor (GdkColorStruct gtkcolor)
 686                 {
 687                         return Color.FromArgb (255,
 688                                 (gtkcolor.red >> 8)  & 0xff,
 689                                 (gtkcolor.green  >> 8) & 0xff,
 690                                 (gtkcolor.blue >> 8) & 0xff );
 691                 }
 692
 693         } //class
 694 }