Pileus Git - ~andy/gtk/blob - gtk/gtkhandlebox.c

   1 /* GTK - The GIMP Toolkit
   2  * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
   3  * Copyright (C) 1998 Elliot Lee
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Library General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Library General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Library General Public
  16  * License along with this library; if not, write to the
  17  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18  * Boston, MA 02111-1307, USA.
  19  */
  20
  21
  22 #include <stdlib.h>
  23 #include "gdk/gdkx.h"
  24 #include "gtkhandlebox.h"
  25 #include "gtkmain.h"
  26 #include "gtksignal.h"
  27 #include "gtkwindow.h"
  28
  29
  30 #define DRAG_HANDLE_SIZE 10
  31 #define CHILDLESS_SIZE  25
  32 #define GHOST_HEIGHT 3
  33
  34 enum
  35 {
  36   SIGNAL_CHILD_ATTACHED,
  37   SIGNAL_CHILD_DETACHED,
  38   SIGNAL_LAST
  39 };
  40
  41 static void gtk_handle_box_class_init     (GtkHandleBoxClass *klass);
  42 static void gtk_handle_box_init           (GtkHandleBox      *handle_box);
  43 static void gtk_handle_box_destroy        (GtkObject         *object);
  44 static void gtk_handle_box_map            (GtkWidget         *widget);
  45 static void gtk_handle_box_unmap          (GtkWidget         *widget);
  46 static void gtk_handle_box_realize        (GtkWidget         *widget);
  47 static void gtk_handle_box_unrealize      (GtkWidget         *widget);
  48 static void gtk_handle_box_style_set      (GtkWidget         *widget,
  49                                            GtkStyle          *previous_style);
  50 static void gtk_handle_box_size_request   (GtkWidget         *widget,
  51                                            GtkRequisition    *requisition);
  52 static void gtk_handle_box_size_allocate  (GtkWidget         *widget,
  53                                            GtkAllocation     *real_allocation);
  54 static void gtk_handle_box_add            (GtkContainer      *container,
  55                                            GtkWidget         *widget);
  56 static void gtk_handle_box_remove         (GtkContainer      *container,
  57                                            GtkWidget         *widget);
  58 static void gtk_handle_box_draw_ghost     (GtkHandleBox      *hb);
  59 static void gtk_handle_box_paint          (GtkWidget         *widget,
  60                                            GdkEventExpose    *event,
  61                                            GdkRectangle      *area);
  62 static void gtk_handle_box_draw           (GtkWidget         *widget,
  63                                            GdkRectangle      *area);
  64 static gint gtk_handle_box_expose         (GtkWidget         *widget,
  65                                            GdkEventExpose    *event);
  66 static gint gtk_handle_box_button_changed (GtkWidget         *widget,
  67                                            GdkEventButton    *event);
  68 static gint gtk_handle_box_motion         (GtkWidget         *widget,
  69                                            GdkEventMotion    *event);
  70 static gint gtk_handle_box_delete_event   (GtkWidget         *widget,
  71                                            GdkEventAny       *event);
  72
  73
  74 static GtkBinClass *parent_class;
  75 static guint        handle_box_signals[SIGNAL_LAST] = { 0 };
  76
  77
  78 guint
  79 gtk_handle_box_get_type (void)
  80 {
  81   static guint handle_box_type = 0;
  82
  83   if (!handle_box_type)
  84     {
  85       GtkTypeInfo handle_box_info =
  86       {
  87         "GtkHandleBox",
  88         sizeof (GtkHandleBox),
  89         sizeof (GtkHandleBoxClass),
  90         (GtkClassInitFunc) gtk_handle_box_class_init,
  91         (GtkObjectInitFunc) gtk_handle_box_init,
  92         /* reserved_1 */ NULL,
  93         /* reserved_2 */ NULL,
  94         (GtkClassInitFunc) NULL,
  95       };
  96
  97       handle_box_type = gtk_type_unique (gtk_bin_get_type (), &handle_box_info);
  98     }
  99
 100   return handle_box_type;
 101 }
 102
 103 static void
 104 gtk_handle_box_class_init (GtkHandleBoxClass *class)
 105 {
 106   GtkObjectClass *object_class;
 107   GtkWidgetClass *widget_class;
 108   GtkContainerClass *container_class;
 109
 110   object_class = (GtkObjectClass *) class;
 111   widget_class = (GtkWidgetClass *) class;
 112   container_class = (GtkContainerClass *) class;
 113
 114   parent_class = gtk_type_class (gtk_bin_get_type ());
 115
 116   handle_box_signals[SIGNAL_CHILD_ATTACHED] =
 117     gtk_signal_new ("child_attached",
 118                     GTK_RUN_FIRST,
 119                     object_class->type,
 120                     GTK_SIGNAL_OFFSET (GtkHandleBoxClass, child_attached),
 121                     gtk_marshal_NONE__POINTER,
 122                     GTK_TYPE_NONE, 1,
 123                     GTK_TYPE_WIDGET);
 124   handle_box_signals[SIGNAL_CHILD_DETACHED] =
 125     gtk_signal_new ("child_detached",
 126                     GTK_RUN_FIRST,
 127                     object_class->type,
 128                     GTK_SIGNAL_OFFSET (GtkHandleBoxClass, child_detached),
 129                     gtk_marshal_NONE__POINTER,
 130                     GTK_TYPE_NONE, 1,
 131                     GTK_TYPE_WIDGET);
 132   gtk_object_class_add_signals (object_class, handle_box_signals, SIGNAL_LAST);
 133
 134   object_class->destroy = gtk_handle_box_destroy;
 135
 136   widget_class->map = gtk_handle_box_map;
 137   widget_class->unmap = gtk_handle_box_unmap;
 138   widget_class->realize = gtk_handle_box_realize;
 139   widget_class->unrealize = gtk_handle_box_unrealize;
 140   widget_class->style_set = gtk_handle_box_style_set;
 141   widget_class->size_request = gtk_handle_box_size_request;
 142   widget_class->size_allocate = gtk_handle_box_size_allocate;
 143   widget_class->draw = gtk_handle_box_draw;
 144   widget_class->expose_event = gtk_handle_box_expose;
 145   widget_class->button_press_event = gtk_handle_box_button_changed;
 146   widget_class->button_release_event = gtk_handle_box_button_changed;
 147   widget_class->motion_notify_event = gtk_handle_box_motion;
 148   widget_class->delete_event = gtk_handle_box_delete_event;
 149
 150   container_class->add = gtk_handle_box_add;
 151   container_class->remove = gtk_handle_box_remove;
 152
 153   class->child_attached = NULL;
 154   class->child_detached = NULL;
 155 }
 156
 157 static void
 158 gtk_handle_box_init (GtkHandleBox *handle_box)
 159 {
 160   GTK_WIDGET_UNSET_FLAGS (handle_box, GTK_NO_WINDOW);
 161   GTK_WIDGET_SET_FLAGS (handle_box, GTK_BASIC); /* FIXME: are we really a basic widget? */
 162
 163   handle_box->bin_window = NULL;
 164   handle_box->float_window = NULL;
 165   handle_box->handle_position = GTK_POS_LEFT;
 166   handle_box->float_window_mapped = FALSE;
 167   handle_box->child_detached = FALSE;
 168   handle_box->in_drag = FALSE;
 169   handle_box->shrink_on_detach = TRUE;
 170   handle_box->dragoff_x = 0;
 171   handle_box->dragoff_y = 0;
 172 }
 173
 174 GtkWidget*
 175 gtk_handle_box_new (void)
 176 {
 177   return GTK_WIDGET (gtk_type_new (gtk_handle_box_get_type ()));
 178 }
 179
 180 static void
 181 gtk_handle_box_destroy (GtkObject *object)
 182 {
 183   GtkHandleBox *hb;
 184
 185   g_return_if_fail (object != NULL);
 186   g_return_if_fail (GTK_IS_HANDLE_BOX (object));
 187
 188   hb = GTK_HANDLE_BOX (object);
 189
 190   if (GTK_OBJECT_CLASS (parent_class)->destroy)
 191     (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
 192 }
 193
 194 static void
 195 gtk_handle_box_map (GtkWidget *widget)
 196 {
 197   GtkBin *bin;
 198   GtkHandleBox *hb;
 199
 200   g_return_if_fail (widget != NULL);
 201   g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
 202
 203   GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
 204
 205   bin = GTK_BIN (widget);
 206   hb = GTK_HANDLE_BOX (widget);
 207
 208   gdk_window_show (hb->bin_window);
 209   gdk_window_show (widget->window);
 210
 211   if (hb->child_detached && !hb->float_window_mapped)
 212     {
 213       gdk_window_show (hb->float_window);
 214       hb->float_window_mapped = TRUE;
 215     }
 216
 217   if (bin->child &&
 218       GTK_WIDGET_VISIBLE (bin->child) &&
 219       !GTK_WIDGET_MAPPED (bin->child))
 220     gtk_widget_map (bin->child);
 221 }
 222
 223 static void
 224 gtk_handle_box_unmap (GtkWidget *widget)
 225 {
 226   GtkHandleBox *hb;
 227
 228   g_return_if_fail (widget != NULL);
 229   g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
 230
 231   GTK_WIDGET_UNSET_FLAGS (widget, GTK_MAPPED);
 232
 233   hb = GTK_HANDLE_BOX (widget);
 234
 235   gdk_window_hide (widget->window);
 236   if (hb->float_window_mapped)
 237     {
 238       gdk_window_hide (hb->float_window);
 239       hb->float_window_mapped = FALSE;
 240     }
 241 }
 242
 243 static void
 244 gtk_handle_box_realize (GtkWidget *widget)
 245 {
 246   GdkWindowAttr attributes;
 247   gint attributes_mask;
 248   GtkHandleBox *hb;
 249
 250   g_return_if_fail (widget != NULL);
 251   g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
 252
 253   hb = GTK_HANDLE_BOX (widget);
 254
 255   GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
 256
 257   attributes.x = widget->allocation.x;
 258   attributes.y = widget->allocation.y;
 259   attributes.width = widget->allocation.width;
 260   attributes.height = widget->allocation.height;
 261   attributes.window_type = GDK_WINDOW_CHILD;
 262   attributes.wclass = GDK_INPUT_OUTPUT;
 263   attributes.visual = gtk_widget_get_visual (widget);
 264   attributes.colormap = gtk_widget_get_colormap (widget);
 265   attributes.event_mask = (gtk_widget_get_events (widget)
 266                            | GDK_EXPOSURE_MASK);
 267   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
 268   widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask);
 269   gdk_window_set_user_data (widget->window, widget);
 270
 271   attributes.x = 0;
 272   attributes.y = 0;
 273   attributes.width = widget->allocation.width;
 274   attributes.height = widget->allocation.height;
 275   attributes.window_type = GDK_WINDOW_CHILD;
 276   attributes.event_mask |= (gtk_widget_get_events (widget) |
 277                             GDK_EXPOSURE_MASK |
 278                             GDK_BUTTON1_MOTION_MASK |
 279                             GDK_POINTER_MOTION_HINT_MASK |
 280                             GDK_BUTTON_PRESS_MASK |
 281                             GDK_BUTTON_RELEASE_MASK);
 282   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
 283   hb->bin_window = gdk_window_new (widget->window, &attributes, attributes_mask);
 284   gdk_window_set_user_data (hb->bin_window, widget);
 285   if (GTK_BIN (hb)->child)
 286     gtk_widget_set_parent_window (GTK_BIN (hb)->child, hb->bin_window);
 287
 288   attributes.x = 0;
 289   attributes.y = 0;
 290   attributes.width = widget->requisition.width;
 291   attributes.height = widget->requisition.height;
 292   attributes.window_type = GDK_WINDOW_TOPLEVEL;
 293   attributes.wclass = GDK_INPUT_OUTPUT;
 294   attributes.visual = gtk_widget_get_visual (widget);
 295   attributes.colormap = gtk_widget_get_colormap (widget);
 296   attributes.event_mask = (gtk_widget_get_events (widget) |
 297                            GDK_KEY_PRESS_MASK |
 298                            GDK_ENTER_NOTIFY_MASK |
 299                            GDK_LEAVE_NOTIFY_MASK |
 300                            GDK_FOCUS_CHANGE_MASK |
 301                            GDK_STRUCTURE_MASK);
 302   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
 303   hb->float_window = gdk_window_new (NULL, &attributes, attributes_mask);
 304   gdk_window_set_user_data (hb->float_window, widget);
 305   gdk_window_set_decorations (hb->float_window, 0);
 306
 307   widget->style = gtk_style_attach (widget->style, widget->window);
 308   gtk_style_set_background (widget->style, widget->window, GTK_WIDGET_STATE (hb));
 309   gtk_style_set_background (widget->style, hb->bin_window, GTK_WIDGET_STATE (hb));
 310   gtk_style_set_background (widget->style, hb->float_window, GTK_WIDGET_STATE (hb));
 311 }
 312
 313 static void
 314 gtk_handle_box_unrealize (GtkWidget *widget)
 315 {
 316   GtkHandleBox *hb;
 317
 318   g_return_if_fail (widget != NULL);
 319   g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
 320
 321   hb = GTK_HANDLE_BOX (widget);
 322
 323   gdk_window_set_user_data (hb->bin_window, NULL);
 324   gdk_window_destroy (hb->bin_window);
 325   hb->bin_window = NULL;
 326   gdk_window_set_user_data (hb->float_window, NULL);
 327   gdk_window_destroy (hb->float_window);
 328   hb->float_window = NULL;
 329
 330   if (GTK_WIDGET_CLASS (parent_class)->unrealize)
 331     (* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
 332 }
 333
 334 static void
 335 gtk_handle_box_style_set (GtkWidget *widget,
 336                           GtkStyle  *previous_style)
 337 {
 338   GtkHandleBox *hb;
 339
 340   g_return_if_fail (widget != NULL);
 341   g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
 342
 343   hb = GTK_HANDLE_BOX (widget);
 344
 345   if (GTK_WIDGET_REALIZED (widget) &&
 346       !GTK_WIDGET_NO_WINDOW (widget))
 347     {
 348       gtk_style_set_background (widget->style, widget->window,
 349 widget->state);
 350       gtk_style_set_background (widget->style, hb->bin_window, widget->state);
 351       gtk_style_set_background (widget->style, hb->float_window, widget->state);
 352       if (GTK_WIDGET_DRAWABLE (widget))
 353         gdk_window_clear (widget->window);
 354     }
 355 }
 356
 357 static void
 358 gtk_handle_box_size_request (GtkWidget      *widget,
 359                              GtkRequisition *requisition)
 360 {
 361   GtkBin *bin;
 362   GtkHandleBox *hb;
 363
 364   g_return_if_fail (widget != NULL);
 365   g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
 366   g_return_if_fail (requisition != NULL);
 367
 368   bin = GTK_BIN (widget);
 369   hb = GTK_HANDLE_BOX (widget);
 370
 371   if (hb->handle_position == GTK_POS_LEFT ||
 372       hb->handle_position == GTK_POS_RIGHT)
 373     {
 374       requisition->width = DRAG_HANDLE_SIZE;
 375       requisition->height = 0;
 376     }
 377   else
 378     {
 379       requisition->width = 0;
 380       requisition->height = DRAG_HANDLE_SIZE;
 381     }
 382
 383   /* if our child is not visible, we still request its size, since we
 384    * won't have any usefull hint for our size otherwise.
 385    */
 386   if (bin->child)
 387     gtk_widget_size_request (bin->child, &bin->child->requisition);
 388
 389   if (hb->child_detached)
 390     {
 391       if (!hb->shrink_on_detach)
 392         {
 393           if (hb->handle_position == GTK_POS_LEFT ||
 394               hb->handle_position == GTK_POS_RIGHT)
 395             requisition->height += bin->child->requisition.height;
 396           else
 397             requisition->width += bin->child->requisition.width;
 398         }
 399       else
 400         {
 401           if (hb->handle_position == GTK_POS_LEFT ||
 402               hb->handle_position == GTK_POS_RIGHT)
 403             requisition->height += widget->style->klass->ythickness;
 404           else
 405             requisition->width += widget->style->klass->xthickness;
 406         }
 407     }
 408   else
 409     {
 410       requisition->width += GTK_CONTAINER (widget)->border_width * 2;
 411       requisition->height += GTK_CONTAINER (widget)->border_width * 2;
 412
 413       if (bin->child)
 414         {
 415           requisition->width += bin->child->requisition.width;
 416           requisition->height += bin->child->requisition.height;
 417         }
 418       else
 419         {
 420           requisition->width += CHILDLESS_SIZE;
 421           requisition->height += CHILDLESS_SIZE;
 422         }
 423     }
 424 }
 425
 426 static void
 427 gtk_handle_box_size_allocate (GtkWidget     *widget,
 428                               GtkAllocation *allocation)
 429 {
 430   GtkBin *bin;
 431   GtkHandleBox *hb;
 432
 433   g_return_if_fail (widget != NULL);
 434   g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
 435   g_return_if_fail (allocation != NULL);
 436
 437   bin = GTK_BIN (widget);
 438   hb = GTK_HANDLE_BOX (widget);
 439
 440   widget->allocation.x = allocation->x;
 441
 442   if (hb->child_detached)
 443     {
 444       guint max_req_height;
 445       guint max_req_width;
 446
 447       max_req_height = MAX (widget->requisition.height,
 448                             bin->child->requisition.height +
 449                             2 * widget->style->klass->ythickness);
 450       max_req_width = MAX (widget->requisition.width,
 451                            bin->child->requisition.width +
 452                            2 * widget->style->klass->xthickness);
 453
 454       if (allocation->height > max_req_height)
 455         widget->allocation.y = allocation->y +
 456           (allocation->height - max_req_height) / 2;
 457       else
 458         widget->allocation.y = allocation->y;
 459
 460       widget->allocation.height = MIN (allocation->height, max_req_height);
 461       widget->allocation.width = MIN (allocation->width, max_req_width);
 462     }
 463   else
 464     {
 465       widget->allocation = *allocation;
 466     }
 467
 468   if (GTK_WIDGET_REALIZED (hb))
 469     gdk_window_move_resize (widget->window,
 470                             widget->allocation.x,
 471                             widget->allocation.y,
 472                             widget->allocation.width,
 473                             widget->allocation.height);
 474
 475
 476   if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
 477     {
 478       GtkWidget *child;
 479       GtkAllocation child_allocation;
 480       guint border_width;
 481
 482       child = bin->child;
 483       border_width = GTK_CONTAINER (widget)->border_width;
 484
 485       child_allocation.x = border_width;
 486       child_allocation.y = border_width;
 487       if (hb->handle_position == GTK_POS_LEFT)
 488         child_allocation.x += DRAG_HANDLE_SIZE;
 489       else if (hb->handle_position == GTK_POS_TOP)
 490         child_allocation.y += DRAG_HANDLE_SIZE;
 491
 492       if (hb->child_detached)
 493         {
 494           guint float_width;
 495           guint float_height;
 496
 497           child_allocation.width = child->requisition.width;
 498           child_allocation.height = child->requisition.height;
 499
 500           float_width = child_allocation.width + 2 * border_width;
 501           float_height = child_allocation.height + 2 * border_width;
 502
 503           if (hb->handle_position == GTK_POS_LEFT ||
 504               hb->handle_position == GTK_POS_RIGHT)
 505             float_width += DRAG_HANDLE_SIZE;
 506           else
 507             float_height += DRAG_HANDLE_SIZE;
 508
 509           if (GTK_WIDGET_REALIZED (hb))
 510             {
 511               gdk_window_resize (hb->float_window,
 512                                  float_width,
 513                                  float_height);
 514               gdk_window_move_resize (hb->bin_window,
 515                                       0,
 516                                       0,
 517                                       float_width,
 518                                       float_height);
 519             }
 520         }
 521       else
 522         {
 523           child_allocation.width = MAX (1, widget->allocation.width - 2 * border_width);
 524           child_allocation.height = MAX (1, widget->allocation.height - 2 * border_width);
 525
 526           if (hb->handle_position == GTK_POS_LEFT ||
 527               hb->handle_position == GTK_POS_RIGHT)
 528             child_allocation.width -= DRAG_HANDLE_SIZE;
 529           else
 530             child_allocation.height -= DRAG_HANDLE_SIZE;
 531
 532           if (GTK_WIDGET_REALIZED (hb))
 533             gdk_window_move_resize (hb->bin_window,
 534                                     0,
 535                                     0,
 536                                     widget->allocation.width,
 537                                     widget->allocation.height);
 538         }
 539
 540       gtk_widget_size_allocate (bin->child, &child_allocation);
 541     }
 542 }
 543
 544 static void
 545 gtk_handle_box_draw_ghost (GtkHandleBox *hb)
 546 {
 547   GtkWidget *widget;
 548   guint x;
 549   guint y;
 550   guint width;
 551   guint height;
 552
 553   widget = GTK_WIDGET (hb);
 554
 555   if (hb->handle_position == GTK_POS_LEFT ||
 556       hb->handle_position == GTK_POS_RIGHT)
 557     {
 558       x = hb->handle_position == GTK_POS_LEFT ? 0 : widget->allocation.width;
 559       y = 0;
 560       width = DRAG_HANDLE_SIZE;
 561       height = widget->allocation.height;
 562     }
 563   else
 564     {
 565       x = 0;
 566       y = hb->handle_position == GTK_POS_TOP ? 0 : widget->allocation.height;
 567       width = widget->allocation.width;
 568       height = DRAG_HANDLE_SIZE;
 569     }
 570   gtk_draw_shadow (widget->style,
 571                    widget->window,
 572                    GTK_WIDGET_STATE (widget),
 573                    GTK_SHADOW_ETCHED_IN,
 574                    x,
 575                    y,
 576                    width,
 577                    height);
 578   /*
 579   if (hb->handle_position == GTK_POS_LEFT ||
 580       hb->handle_position == GTK_POS_RIGHT)
 581     gtk_draw_hline (widget->style,
 582                     widget->window,
 583                     GTK_WIDGET_STATE (widget),
 584                     hb->handle_position == GTK_POS_LEFT ? DRAG_HANDLE_SIZE : widget->allocation.width - DRAG_HANDLE_SIZE,
 585                     widget->allocation.width - DRAG_HANDLE_SIZE,
 586                     widget->allocation.height / 2);
 587   else
 588     gtk_draw_vline (widget->style,
 589                     widget->window,
 590                     GTK_WIDGET_STATE (widget),
 591                     hb->handle_position == GTK_POS_TOP ? DRAG_HANDLE_SIZE : widget->allocation.height - DRAG_HANDLE_SIZE,
 592                     widget->allocation.height - DRAG_HANDLE_SIZE,
 593                     widget->allocation.width / 2);
 594                     */
 595 }
 596
 597 static void
 598 draw_textured_frame (GtkWidget *widget, GdkWindow *window, GdkRectangle *rect, GtkShadowType shadow,
 599                      GdkRectangle *clip)
 600 {
 601   int x, y;
 602   int xthick, ythick;
 603   GdkGC *light_gc, *dark_gc;
 604   GdkRectangle dest;
 605
 606   if (gdk_rectangle_intersect (rect, clip, &dest))
 607     {
 608       gdk_draw_rectangle (window,
 609                           widget->style->bg_gc[GTK_STATE_NORMAL],
 610                           TRUE,
 611                           dest.x, dest.y,
 612                           dest.width, dest.height);
 613
 614       light_gc = widget->style->light_gc[GTK_STATE_NORMAL];
 615       dark_gc = widget->style->dark_gc[GTK_STATE_NORMAL];
 616
 617       xthick = widget->style->klass->xthickness;
 618       ythick = widget->style->klass->ythickness;
 619
 620       gdk_gc_set_clip_rectangle (light_gc, &dest);
 621       gdk_gc_set_clip_rectangle (dark_gc, &dest);
 622
 623       for (y = rect->y + ythick; y < (rect->y + rect->height - ythick); y += 3)
 624         for (x = rect->x + xthick; x < (rect->x + rect->width - xthick); x += 6)
 625           {
 626             gdk_draw_point (window, light_gc, x, y);
 627             gdk_draw_point (window, dark_gc, x + 1, y + 1);
 628
 629             gdk_draw_point (window, light_gc, x + 3, y + 1);
 630             gdk_draw_point (window, dark_gc, x + 4, y + 2);
 631           }
 632
 633       gdk_gc_set_clip_rectangle (light_gc, NULL);
 634       gdk_gc_set_clip_rectangle (dark_gc, NULL);
 635
 636       gtk_draw_shadow (widget->style, window,
 637                        GTK_STATE_NORMAL, shadow,
 638                        rect->x, rect->y,
 639                        rect->width, rect->height);
 640     }
 641 }
 642
 643 static void
 644 gtk_handle_box_paint (GtkWidget      *widget,
 645                       GdkEventExpose *event,
 646                       GdkRectangle   *area)
 647 {
 648   GtkBin *bin;
 649   GtkHandleBox *hb;
 650   guint width;
 651   guint height;
 652   guint border_width;
 653   GdkRectangle rect;
 654
 655   bin = GTK_BIN (widget);
 656   hb = GTK_HANDLE_BOX (widget);
 657
 658   border_width = GTK_CONTAINER (hb)->border_width;
 659
 660   if (hb->child_detached)
 661     {
 662       width = bin->child->allocation.width + 2 * border_width;
 663       height = bin->child->allocation.height + 2 * border_width;
 664     }
 665   else if (hb->handle_position == GTK_POS_LEFT ||
 666            hb->handle_position == GTK_POS_RIGHT)
 667     {
 668       width = widget->allocation.width - DRAG_HANDLE_SIZE;
 669       height = widget->allocation.height;
 670     }
 671   else
 672     {
 673       width = widget->allocation.width;
 674       height = widget->allocation.height - DRAG_HANDLE_SIZE;
 675     }
 676
 677   if (!event)
 678     gdk_window_clear_area (hb->bin_window,
 679                            area->x,
 680                            area->y,
 681                            area->width,
 682                            area->height);
 683
 684   gtk_draw_shadow (widget->style,
 685                    hb->bin_window,
 686                    GTK_WIDGET_STATE (widget),
 687                    GTK_SHADOW_OUT,
 688                    hb->handle_position == GTK_POS_LEFT ? DRAG_HANDLE_SIZE : 0,
 689                    hb->handle_position == GTK_POS_TOP ? DRAG_HANDLE_SIZE : 0,
 690                    width,
 691                    height);
 692
 693   rect.x = 0;
 694   rect.y = 0;
 695   rect.width = (hb->handle_position == GTK_POS_LEFT) ? DRAG_HANDLE_SIZE : width;
 696   rect.height = (hb->handle_position == GTK_POS_TOP) ? DRAG_HANDLE_SIZE : height;
 697
 698   draw_textured_frame (widget, hb->bin_window, &rect, GTK_SHADOW_OUT, event ? &event->area : area);
 699
 700   if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
 701     {
 702       GdkRectangle child_area;
 703       GdkEventExpose child_event;
 704
 705       if (!event) /* we were called from draw() */
 706         {
 707           if (gtk_widget_intersect (bin->child, area, &child_area))
 708             gtk_widget_draw (bin->child, &child_area);
 709         }
 710       else /* we were called from expose() */
 711         {
 712           child_event = *event;
 713
 714           if (GTK_WIDGET_NO_WINDOW (bin->child) &&
 715               gtk_widget_intersect (bin->child, &event->area, &child_event.area))
 716             gtk_widget_event (bin->child, (GdkEvent *) &child_event);
 717         }
 718     }
 719 }
 720
 721 static void
 722 gtk_handle_box_draw (GtkWidget    *widget,
 723                      GdkRectangle *area)
 724 {
 725   GtkHandleBox *hb;
 726
 727   g_return_if_fail (widget != NULL);
 728   g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
 729   g_return_if_fail (area != NULL);
 730
 731   hb = GTK_HANDLE_BOX (widget);
 732
 733   if (GTK_WIDGET_DRAWABLE (widget))
 734     {
 735       if (hb->child_detached)
 736         {
 737           /* The area parameter does not make sense in this case, so we
 738            * repaint everything.
 739            */
 740
 741           gtk_handle_box_draw_ghost (hb);
 742
 743           area->x = 0;
 744           area->y = 0;
 745           area->width = 2 * GTK_CONTAINER (hb)->border_width + DRAG_HANDLE_SIZE;
 746           area->height = area->width + GTK_BIN (hb)->child->allocation.height;
 747           area->width += GTK_BIN (hb)->child->allocation.width;
 748
 749           gtk_handle_box_paint (widget, NULL, area);
 750         }
 751       else
 752         gtk_handle_box_paint (widget, NULL, area);
 753     }
 754 }
 755
 756 static gint
 757 gtk_handle_box_expose (GtkWidget      *widget,
 758                        GdkEventExpose *event)
 759 {
 760   GtkHandleBox *hb;
 761
 762   g_return_val_if_fail (widget != NULL, FALSE);
 763   g_return_val_if_fail (GTK_IS_HANDLE_BOX (widget), FALSE);
 764   g_return_val_if_fail (event != NULL, FALSE);
 765
 766   if (GTK_WIDGET_DRAWABLE (widget))
 767     {
 768       hb = GTK_HANDLE_BOX (widget);
 769
 770       if (event->window == widget->window)
 771         {
 772           if (hb->child_detached)
 773             gtk_handle_box_draw_ghost (hb);
 774         }
 775       else
 776         gtk_handle_box_paint (widget, event, NULL);
 777     }
 778
 779   return FALSE;
 780 }
 781
 782 static gint
 783 gtk_handle_box_button_changed (GtkWidget      *widget,
 784                                GdkEventButton *event)
 785 {
 786   GtkHandleBox *hb;
 787   gboolean event_handled;
 788   GdkCursor *fleur;
 789
 790   g_return_val_if_fail (widget != NULL, FALSE);
 791   g_return_val_if_fail (GTK_IS_HANDLE_BOX (widget), FALSE);
 792   g_return_val_if_fail (event != NULL, FALSE);
 793
 794   hb = GTK_HANDLE_BOX (widget);
 795
 796   event_handled = FALSE;
 797   if (event->button == 1 &&
 798       event->type == GDK_BUTTON_PRESS)
 799     {
 800       GtkWidget *child;
 801       gboolean in_handle;
 802
 803       child = GTK_BIN (hb)->child;
 804
 805       switch (hb->handle_position)
 806         {
 807         case GTK_POS_LEFT:
 808           in_handle = event->x < DRAG_HANDLE_SIZE;
 809           break;
 810         case GTK_POS_TOP:
 811           in_handle = event->y < DRAG_HANDLE_SIZE;
 812           break;
 813         case GTK_POS_RIGHT:
 814           in_handle = event->x > 2 * GTK_CONTAINER (hb)->border_width + child->allocation.width;
 815           break;
 816         case GTK_POS_BOTTOM:
 817           in_handle = event->y > 2 * GTK_CONTAINER (hb)->border_width + child->allocation.height;
 818           break;
 819         default:
 820           in_handle = FALSE;
 821           break;
 822         }
 823
 824       if (!child)
 825         {
 826           in_handle = FALSE;
 827           event_handled = TRUE;
 828         }
 829
 830       if (in_handle)
 831         {
 832           hb->dragoff_x = event->x;
 833           hb->dragoff_y = event->y;
 834
 835           gtk_grab_add (widget);
 836           hb->in_drag = TRUE;
 837           fleur = gdk_cursor_new (GDK_FLEUR);
 838           while (gdk_pointer_grab (hb->bin_window,
 839                                    FALSE,
 840                                    (GDK_BUTTON1_MOTION_MASK |
 841                                     GDK_POINTER_MOTION_HINT_MASK |
 842                                     GDK_BUTTON_RELEASE_MASK),
 843                                    NULL,
 844                                    fleur,
 845                                    GDK_CURRENT_TIME) != 0); /* wait for success */
 846           gdk_cursor_destroy (fleur);
 847           event_handled = TRUE;
 848         }
 849     }
 850   else if (event->type == GDK_BUTTON_RELEASE &&
 851            hb->in_drag)
 852     {
 853       gdk_pointer_ungrab (GDK_CURRENT_TIME);
 854       gtk_grab_remove (widget);
 855       hb->in_drag = FALSE;
 856       event_handled = TRUE;
 857     }
 858
 859   return event_handled;
 860 }
 861
 862 static gint
 863 gtk_handle_box_motion (GtkWidget      *widget,
 864                        GdkEventMotion *event)
 865 {
 866   GtkHandleBox *hb;
 867   gint new_x, new_y;
 868   gint ox, oy;
 869   gint snap_x, snap_y;
 870   gboolean in_handle;
 871   GdkCursor *fleur;
 872
 873   g_return_val_if_fail (widget != NULL, FALSE);
 874   g_return_val_if_fail (GTK_IS_HANDLE_BOX (widget), FALSE);
 875   g_return_val_if_fail (event != NULL, FALSE);
 876
 877   hb = GTK_HANDLE_BOX (widget);
 878   if (!hb->in_drag)
 879     return FALSE;
 880
 881   ox = 0;
 882   oy = 0;
 883   gdk_window_get_origin (hb->float_window, &ox, &oy);
 884   new_x = 0;
 885   new_y = 0;
 886   gdk_window_get_pointer (hb->float_window, &new_x, &new_y, NULL);
 887   new_x += ox;
 888   new_y += oy;
 889   new_x -= hb->dragoff_x;
 890   new_y -= hb->dragoff_y;
 891   snap_x = 0;
 892   snap_y = 0;
 893   gdk_window_get_pointer (widget->window, &snap_x, &snap_y, NULL);
 894
 895   switch (hb->handle_position)
 896     {
 897     case GTK_POS_LEFT:
 898       in_handle = (snap_x >= 0 && snap_x <= DRAG_HANDLE_SIZE &&
 899                    snap_y >= 0 && snap_y <= widget->allocation.height);
 900       break;
 901     case GTK_POS_TOP:
 902       in_handle = (snap_x >= 0 && snap_x <= widget->allocation.width &&
 903                    snap_y >= 0 && snap_y <= DRAG_HANDLE_SIZE);
 904       break;
 905     case GTK_POS_RIGHT:
 906       in_handle = (snap_x >= widget->allocation.width - DRAG_HANDLE_SIZE && snap_x <= widget->allocation.width &&
 907                    snap_y >= 0 && snap_y <= widget->allocation.height);
 908       break;
 909     case GTK_POS_BOTTOM:
 910       in_handle = (snap_x >= 0 && snap_x <= widget->allocation.width &&
 911                    snap_y >= widget->allocation.height - DRAG_HANDLE_SIZE && snap_y <= widget->allocation.height);
 912       break;
 913     default:
 914       in_handle = FALSE;
 915       break;
 916     }
 917
 918   if (in_handle)
 919     {
 920       if (hb->child_detached)
 921         {
 922           gdk_pointer_ungrab (GDK_CURRENT_TIME);
 923
 924           hb->child_detached = FALSE;
 925           gdk_window_hide (hb->float_window);
 926           gdk_window_reparent (hb->bin_window, widget->window, 0, 0);
 927           hb->float_window_mapped = FALSE;
 928           gtk_signal_emit (GTK_OBJECT (hb),
 929                            handle_box_signals[SIGNAL_CHILD_ATTACHED],
 930                            GTK_BIN (hb)->child);
 931
 932           fleur = gdk_cursor_new (GDK_FLEUR);
 933           while (gdk_pointer_grab (hb->bin_window,
 934                                    FALSE,
 935                                    (GDK_BUTTON1_MOTION_MASK |
 936                                     GDK_POINTER_MOTION_HINT_MASK |
 937                                     GDK_BUTTON_RELEASE_MASK),
 938                                    NULL,
 939                                    fleur,
 940                                    GDK_CURRENT_TIME) != 0); /* wait for success */
 941           gdk_cursor_destroy (fleur);
 942
 943           gtk_widget_queue_resize (widget);
 944         }
 945     }
 946   else
 947     {
 948       if (hb->child_detached)
 949         {
 950           gdk_window_move (hb->float_window, new_x, new_y);
 951           gdk_window_raise (hb->float_window);
 952         }
 953       else
 954         {
 955           gint width;
 956           gint height;
 957
 958           gdk_pointer_ungrab (GDK_CURRENT_TIME);
 959
 960           hb->child_detached = TRUE;
 961           width = 0;
 962           height = 0;
 963           gdk_window_get_size (hb->bin_window, &width, &height);
 964           gdk_window_move_resize (hb->float_window, new_x, new_y, width, height);
 965           gdk_window_reparent (hb->bin_window, hb->float_window, 0, 0);
 966           gdk_window_set_hints (hb->float_window, new_x, new_y, 0, 0, 0, 0, GDK_HINT_POS);
 967           gdk_window_show (hb->float_window);
 968           hb->float_window_mapped = TRUE;
 969 #if     0
 970           /* this extra move is neccessary if we use decorations, or our
 971            * window manager insists on decorations.
 972            */
 973           gdk_flush ();
 974           gdk_window_move (hb->float_window, new_x, new_y);
 975           gdk_flush ();
 976 #endif  /* 0 */
 977           gtk_signal_emit (GTK_OBJECT (hb),
 978                            handle_box_signals[SIGNAL_CHILD_DETACHED],
 979                            GTK_BIN (hb)->child);
 980           gtk_handle_box_draw_ghost (hb);
 981
 982           fleur = gdk_cursor_new (GDK_FLEUR);
 983           while (gdk_pointer_grab (hb->bin_window,
 984                                    FALSE,
 985                                    (GDK_BUTTON1_MOTION_MASK |
 986                                     GDK_POINTER_MOTION_HINT_MASK |
 987                                     GDK_BUTTON_RELEASE_MASK),
 988                                    NULL,
 989                                    fleur,
 990                                    GDK_CURRENT_TIME) != 0); /* wait for success */
 991           gdk_cursor_destroy (fleur);
 992
 993           gtk_widget_queue_resize (widget);
 994         }
 995     }
 996
 997   return TRUE;
 998 }
 999
1000 static void
1001 gtk_handle_box_add (GtkContainer *container,
1002                     GtkWidget    *widget)
1003 {
1004   g_return_if_fail (GTK_IS_HANDLE_BOX (container));
1005   g_return_if_fail (GTK_BIN (container)->child == NULL);
1006   g_return_if_fail (widget->parent == NULL);
1007
1008   gtk_widget_set_parent_window (widget, GTK_HANDLE_BOX (container)->bin_window);
1009   GTK_CONTAINER_CLASS (parent_class)->add (container, widget);
1010 }
1011
1012 static void
1013 gtk_handle_box_remove (GtkContainer *container,
1014                        GtkWidget    *widget)
1015 {
1016   GtkHandleBox *hb;
1017
1018   g_return_if_fail (GTK_IS_HANDLE_BOX (container));
1019   g_return_if_fail (GTK_BIN (container)->child == widget);
1020
1021   hb = GTK_HANDLE_BOX (container);
1022
1023   if (hb->child_detached)
1024     {
1025       hb->child_detached = FALSE;
1026       if (GTK_WIDGET_REALIZED (hb))
1027         {
1028           gdk_window_hide (hb->float_window);
1029           gdk_window_reparent (hb->bin_window, GTK_WIDGET (hb)->window, 0, 0);
1030         }
1031       hb->float_window_mapped = FALSE;
1032     }
1033   if (hb->in_drag)
1034     {
1035       gdk_pointer_ungrab (GDK_CURRENT_TIME);
1036       gtk_grab_remove (GTK_WIDGET (container));
1037       hb->in_drag = FALSE;
1038     }
1039
1040   GTK_CONTAINER_CLASS (parent_class)->remove (container, widget);
1041 }
1042
1043 static gint
1044 gtk_handle_box_delete_event (GtkWidget *widget,
1045                              GdkEventAny  *event)
1046 {
1047   GtkHandleBox *hb;
1048
1049   g_return_val_if_fail (widget != NULL, FALSE);
1050   g_return_val_if_fail (GTK_IS_HANDLE_BOX (widget), FALSE);
1051   g_return_val_if_fail (event != NULL, FALSE);
1052
1053   hb = GTK_HANDLE_BOX (widget);
1054   g_return_val_if_fail (event->window == hb->float_window, FALSE);
1055
1056   hb->child_detached = FALSE;
1057   gdk_window_hide (hb->float_window);
1058   gdk_window_reparent (hb->bin_window, widget->window, 0, 0);
1059   hb->float_window_mapped = FALSE;
1060   gtk_signal_emit (GTK_OBJECT (hb),
1061                    handle_box_signals[SIGNAL_CHILD_ATTACHED],
1062                    GTK_BIN (hb)->child);
1063   if (hb->in_drag)
1064     {
1065       gdk_pointer_ungrab (GDK_CURRENT_TIME);
1066       gtk_grab_remove (widget);
1067       hb->in_drag = FALSE;
1068     }
1069
1070   gtk_widget_queue_resize (GTK_WIDGET (hb));
1071
1072   return TRUE;
1073 }
1074