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 enum {
  30   ARG_0,
  31   ARG_SHADOW
  32 };
  33
  34 #define DRAG_HANDLE_SIZE 10
  35 #define CHILDLESS_SIZE  25
  36 #define GHOST_HEIGHT 3
  37
  38 enum
  39 {
  40   SIGNAL_CHILD_ATTACHED,
  41   SIGNAL_CHILD_DETACHED,
  42   SIGNAL_LAST
  43 };
  44
  45 static void gtk_handle_box_class_init     (GtkHandleBoxClass *klass);
  46 static void gtk_handle_box_init           (GtkHandleBox      *handle_box);
  47 static void gtk_handle_box_set_arg        (GtkObject         *object,
  48                                            GtkArg            *arg,
  49                                            guint              arg_id);
  50 static void gtk_handle_box_get_arg        (GtkObject         *object,
  51                                            GtkArg            *arg,
  52                                            guint              arg_id);
  53 static void gtk_handle_box_destroy        (GtkObject         *object);
  54 static void gtk_handle_box_map            (GtkWidget         *widget);
  55 static void gtk_handle_box_unmap          (GtkWidget         *widget);
  56 static void gtk_handle_box_realize        (GtkWidget         *widget);
  57 static void gtk_handle_box_unrealize      (GtkWidget         *widget);
  58 static void gtk_handle_box_style_set      (GtkWidget         *widget,
  59                                            GtkStyle          *previous_style);
  60 static void gtk_handle_box_size_request   (GtkWidget         *widget,
  61                                            GtkRequisition    *requisition);
  62 static void gtk_handle_box_size_allocate  (GtkWidget         *widget,
  63                                            GtkAllocation     *real_allocation);
  64 static void gtk_handle_box_add            (GtkContainer      *container,
  65                                            GtkWidget         *widget);
  66 static void gtk_handle_box_remove         (GtkContainer      *container,
  67                                            GtkWidget         *widget);
  68 static void gtk_handle_box_draw_ghost     (GtkHandleBox      *hb);
  69 static void gtk_handle_box_paint          (GtkWidget         *widget,
  70                                            GdkEventExpose    *event,
  71                                            GdkRectangle      *area);
  72 static void gtk_handle_box_draw           (GtkWidget         *widget,
  73                                            GdkRectangle      *area);
  74 static gint gtk_handle_box_expose         (GtkWidget         *widget,
  75                                            GdkEventExpose    *event);
  76 static gint gtk_handle_box_button_changed (GtkWidget         *widget,
  77                                            GdkEventButton    *event);
  78 static gint gtk_handle_box_motion         (GtkWidget         *widget,
  79                                            GdkEventMotion    *event);
  80 static gint gtk_handle_box_delete_event   (GtkWidget         *widget,
  81                                            GdkEventAny       *event);
  82
  83
  84 static GtkBinClass *parent_class;
  85 static guint        handle_box_signals[SIGNAL_LAST] = { 0 };
  86
  87
  88 guint
  89 gtk_handle_box_get_type (void)
  90 {
  91   static guint handle_box_type = 0;
  92
  93   if (!handle_box_type)
  94     {
  95       GtkTypeInfo handle_box_info =
  96       {
  97         "GtkHandleBox",
  98         sizeof (GtkHandleBox),
  99         sizeof (GtkHandleBoxClass),
 100         (GtkClassInitFunc) gtk_handle_box_class_init,
 101         (GtkObjectInitFunc) gtk_handle_box_init,
 102         /* reserved_1 */ NULL,
 103         /* reserved_2 */ NULL,
 104         (GtkClassInitFunc) NULL,
 105       };
 106
 107       handle_box_type = gtk_type_unique (gtk_bin_get_type (), &handle_box_info);
 108     }
 109
 110   return handle_box_type;
 111 }
 112
 113 static void
 114 gtk_handle_box_class_init (GtkHandleBoxClass *class)
 115 {
 116   GtkObjectClass *object_class;
 117   GtkWidgetClass *widget_class;
 118   GtkContainerClass *container_class;
 119
 120   object_class = (GtkObjectClass *) class;
 121   widget_class = (GtkWidgetClass *) class;
 122   container_class = (GtkContainerClass *) class;
 123
 124   parent_class = gtk_type_class (gtk_bin_get_type ());
 125
 126   gtk_object_add_arg_type ("GtkHandleBox::shadow", GTK_TYPE_SHADOW_TYPE, GTK_ARG_READWRITE, ARG_SHADOW);
 127
 128   object_class->set_arg = gtk_handle_box_set_arg;
 129   object_class->get_arg = gtk_handle_box_get_arg;
 130
 131   handle_box_signals[SIGNAL_CHILD_ATTACHED] =
 132     gtk_signal_new ("child_attached",
 133                     GTK_RUN_FIRST,
 134                     object_class->type,
 135                     GTK_SIGNAL_OFFSET (GtkHandleBoxClass, child_attached),
 136                     gtk_marshal_NONE__POINTER,
 137                     GTK_TYPE_NONE, 1,
 138                     GTK_TYPE_WIDGET);
 139   handle_box_signals[SIGNAL_CHILD_DETACHED] =
 140     gtk_signal_new ("child_detached",
 141                     GTK_RUN_FIRST,
 142                     object_class->type,
 143                     GTK_SIGNAL_OFFSET (GtkHandleBoxClass, child_detached),
 144                     gtk_marshal_NONE__POINTER,
 145                     GTK_TYPE_NONE, 1,
 146                     GTK_TYPE_WIDGET);
 147   gtk_object_class_add_signals (object_class, handle_box_signals, SIGNAL_LAST);
 148
 149   object_class->destroy = gtk_handle_box_destroy;
 150
 151   widget_class->map = gtk_handle_box_map;
 152   widget_class->unmap = gtk_handle_box_unmap;
 153   widget_class->realize = gtk_handle_box_realize;
 154   widget_class->unrealize = gtk_handle_box_unrealize;
 155   widget_class->style_set = gtk_handle_box_style_set;
 156   widget_class->size_request = gtk_handle_box_size_request;
 157   widget_class->size_allocate = gtk_handle_box_size_allocate;
 158   widget_class->draw = gtk_handle_box_draw;
 159   widget_class->expose_event = gtk_handle_box_expose;
 160   widget_class->button_press_event = gtk_handle_box_button_changed;
 161   widget_class->button_release_event = gtk_handle_box_button_changed;
 162   widget_class->motion_notify_event = gtk_handle_box_motion;
 163   widget_class->delete_event = gtk_handle_box_delete_event;
 164
 165   container_class->add = gtk_handle_box_add;
 166   container_class->remove = gtk_handle_box_remove;
 167
 168   class->child_attached = NULL;
 169   class->child_detached = NULL;
 170 }
 171
 172 static void
 173 gtk_handle_box_init (GtkHandleBox *handle_box)
 174 {
 175   GTK_WIDGET_UNSET_FLAGS (handle_box, GTK_NO_WINDOW);
 176   GTK_WIDGET_SET_FLAGS (handle_box, GTK_BASIC); /* FIXME: are we really a basic widget? */
 177
 178   handle_box->bin_window = NULL;
 179   handle_box->float_window = NULL;
 180   handle_box->shadow_type = GTK_SHADOW_OUT;
 181   handle_box->handle_position = GTK_POS_LEFT;
 182   handle_box->float_window_mapped = FALSE;
 183   handle_box->child_detached = FALSE;
 184   handle_box->in_drag = FALSE;
 185   handle_box->shrink_on_detach = TRUE;
 186   handle_box->dragoff_x = 0;
 187   handle_box->dragoff_y = 0;
 188 }
 189
 190 static void
 191 gtk_handle_box_set_arg (GtkObject      *object,
 192                         GtkArg         *arg,
 193                         guint           arg_id)
 194 {
 195   GtkHandleBox *handle_box;
 196
 197   handle_box = GTK_HANDLE_BOX (object);
 198
 199   switch (arg_id)
 200     {
 201     case ARG_SHADOW:
 202       gtk_handle_box_set_shadow_type (handle_box, GTK_VALUE_ENUM (*arg));
 203       break;
 204     default:
 205       break;
 206     }
 207 }
 208
 209 static void
 210 gtk_handle_box_get_arg (GtkObject      *object,
 211                         GtkArg         *arg,
 212                         guint           arg_id)
 213 {
 214   GtkHandleBox *handle_box;
 215
 216   handle_box = GTK_HANDLE_BOX (object);
 217
 218   switch (arg_id)
 219     {
 220     case ARG_SHADOW:
 221       GTK_VALUE_ENUM (*arg) = handle_box->shadow_type;
 222       break;
 223     default:
 224       arg->type = GTK_TYPE_INVALID;
 225       break;
 226     }
 227 }
 228
 229 GtkWidget*
 230 gtk_handle_box_new (void)
 231 {
 232   return GTK_WIDGET (gtk_type_new (gtk_handle_box_get_type ()));
 233 }
 234
 235 static void
 236 gtk_handle_box_destroy (GtkObject *object)
 237 {
 238   GtkHandleBox *hb;
 239
 240   g_return_if_fail (object != NULL);
 241   g_return_if_fail (GTK_IS_HANDLE_BOX (object));
 242
 243   hb = GTK_HANDLE_BOX (object);
 244
 245   if (GTK_OBJECT_CLASS (parent_class)->destroy)
 246     (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
 247 }
 248
 249 static void
 250 gtk_handle_box_map (GtkWidget *widget)
 251 {
 252   GtkBin *bin;
 253   GtkHandleBox *hb;
 254
 255   g_return_if_fail (widget != NULL);
 256   g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
 257
 258   GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
 259
 260   bin = GTK_BIN (widget);
 261   hb = GTK_HANDLE_BOX (widget);
 262
 263   gdk_window_show (hb->bin_window);
 264   gdk_window_show (widget->window);
 265
 266   if (hb->child_detached && !hb->float_window_mapped)
 267     {
 268       gdk_window_show (hb->float_window);
 269       hb->float_window_mapped = TRUE;
 270     }
 271
 272   if (bin->child &&
 273       GTK_WIDGET_VISIBLE (bin->child) &&
 274       !GTK_WIDGET_MAPPED (bin->child))
 275     gtk_widget_map (bin->child);
 276 }
 277
 278 static void
 279 gtk_handle_box_unmap (GtkWidget *widget)
 280 {
 281   GtkHandleBox *hb;
 282
 283   g_return_if_fail (widget != NULL);
 284   g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
 285
 286   GTK_WIDGET_UNSET_FLAGS (widget, GTK_MAPPED);
 287
 288   hb = GTK_HANDLE_BOX (widget);
 289
 290   gdk_window_hide (widget->window);
 291   if (hb->float_window_mapped)
 292     {
 293       gdk_window_hide (hb->float_window);
 294       hb->float_window_mapped = FALSE;
 295     }
 296 }
 297
 298 static void
 299 gtk_handle_box_realize (GtkWidget *widget)
 300 {
 301   GdkWindowAttr attributes;
 302   gint attributes_mask;
 303   GtkHandleBox *hb;
 304
 305   g_return_if_fail (widget != NULL);
 306   g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
 307
 308   hb = GTK_HANDLE_BOX (widget);
 309
 310   GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
 311
 312   attributes.x = widget->allocation.x;
 313   attributes.y = widget->allocation.y;
 314   attributes.width = widget->allocation.width;
 315   attributes.height = widget->allocation.height;
 316   attributes.window_type = GDK_WINDOW_CHILD;
 317   attributes.wclass = GDK_INPUT_OUTPUT;
 318   attributes.visual = gtk_widget_get_visual (widget);
 319   attributes.colormap = gtk_widget_get_colormap (widget);
 320   attributes.event_mask = (gtk_widget_get_events (widget)
 321                            | GDK_EXPOSURE_MASK);
 322   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
 323   widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask);
 324   gdk_window_set_user_data (widget->window, widget);
 325
 326   attributes.x = 0;
 327   attributes.y = 0;
 328   attributes.width = widget->allocation.width;
 329   attributes.height = widget->allocation.height;
 330   attributes.window_type = GDK_WINDOW_CHILD;
 331   attributes.event_mask |= (gtk_widget_get_events (widget) |
 332                             GDK_EXPOSURE_MASK |
 333                             GDK_BUTTON1_MOTION_MASK |
 334                             GDK_POINTER_MOTION_HINT_MASK |
 335                             GDK_BUTTON_PRESS_MASK |
 336                             GDK_BUTTON_RELEASE_MASK);
 337   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
 338   hb->bin_window = gdk_window_new (widget->window, &attributes, attributes_mask);
 339   gdk_window_set_user_data (hb->bin_window, widget);
 340   if (GTK_BIN (hb)->child)
 341     gtk_widget_set_parent_window (GTK_BIN (hb)->child, hb->bin_window);
 342
 343   attributes.x = 0;
 344   attributes.y = 0;
 345   attributes.width = widget->requisition.width;
 346   attributes.height = widget->requisition.height;
 347   attributes.window_type = GDK_WINDOW_TOPLEVEL;
 348   attributes.wclass = GDK_INPUT_OUTPUT;
 349   attributes.visual = gtk_widget_get_visual (widget);
 350   attributes.colormap = gtk_widget_get_colormap (widget);
 351   attributes.event_mask = (gtk_widget_get_events (widget) |
 352                            GDK_KEY_PRESS_MASK |
 353                            GDK_ENTER_NOTIFY_MASK |
 354                            GDK_LEAVE_NOTIFY_MASK |
 355                            GDK_FOCUS_CHANGE_MASK |
 356                            GDK_STRUCTURE_MASK);
 357   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
 358   hb->float_window = gdk_window_new (NULL, &attributes, attributes_mask);
 359   gdk_window_set_user_data (hb->float_window, widget);
 360   gdk_window_set_decorations (hb->float_window, 0);
 361
 362   widget->style = gtk_style_attach (widget->style, widget->window);
 363   gtk_style_set_background (widget->style, widget->window, GTK_WIDGET_STATE (hb));
 364   gtk_style_set_background (widget->style, hb->bin_window, GTK_WIDGET_STATE (hb));
 365   gtk_style_set_background (widget->style, hb->float_window, GTK_WIDGET_STATE (hb));
 366   gdk_window_set_back_pixmap (widget->window, NULL, TRUE);
 367 }
 368
 369 static void
 370 gtk_handle_box_unrealize (GtkWidget *widget)
 371 {
 372   GtkHandleBox *hb;
 373
 374   g_return_if_fail (widget != NULL);
 375   g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
 376
 377   hb = GTK_HANDLE_BOX (widget);
 378
 379   gdk_window_set_user_data (hb->bin_window, NULL);
 380   gdk_window_destroy (hb->bin_window);
 381   hb->bin_window = NULL;
 382   gdk_window_set_user_data (hb->float_window, NULL);
 383   gdk_window_destroy (hb->float_window);
 384   hb->float_window = NULL;
 385
 386   if (GTK_WIDGET_CLASS (parent_class)->unrealize)
 387     (* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
 388 }
 389
 390 static void
 391 gtk_handle_box_style_set (GtkWidget *widget,
 392                           GtkStyle  *previous_style)
 393 {
 394   GtkHandleBox *hb;
 395
 396   g_return_if_fail (widget != NULL);
 397   g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
 398
 399   hb = GTK_HANDLE_BOX (widget);
 400
 401   if (GTK_WIDGET_REALIZED (widget) &&
 402       !GTK_WIDGET_NO_WINDOW (widget))
 403     {
 404       gtk_style_set_background (widget->style, widget->window,
 405 widget->state);
 406       gtk_style_set_background (widget->style, hb->bin_window, widget->state);
 407       gtk_style_set_background (widget->style, hb->float_window, widget->state);
 408       if (GTK_WIDGET_DRAWABLE (widget))
 409         gdk_window_clear (widget->window);
 410     }
 411 }
 412
 413 static void
 414 gtk_handle_box_size_request (GtkWidget      *widget,
 415                              GtkRequisition *requisition)
 416 {
 417   GtkBin *bin;
 418   GtkHandleBox *hb;
 419
 420   g_return_if_fail (widget != NULL);
 421   g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
 422   g_return_if_fail (requisition != NULL);
 423
 424   bin = GTK_BIN (widget);
 425   hb = GTK_HANDLE_BOX (widget);
 426
 427   if (hb->handle_position == GTK_POS_LEFT ||
 428       hb->handle_position == GTK_POS_RIGHT)
 429     {
 430       requisition->width = DRAG_HANDLE_SIZE;
 431       requisition->height = 0;
 432     }
 433   else
 434     {
 435       requisition->width = 0;
 436       requisition->height = DRAG_HANDLE_SIZE;
 437     }
 438
 439   /* if our child is not visible, we still request its size, since we
 440    * won't have any usefull hint for our size otherwise.
 441    */
 442   if (bin->child)
 443     gtk_widget_size_request (bin->child, &bin->child->requisition);
 444
 445   if (hb->child_detached)
 446     {
 447       if (!hb->shrink_on_detach)
 448         {
 449           if (hb->handle_position == GTK_POS_LEFT ||
 450               hb->handle_position == GTK_POS_RIGHT)
 451             requisition->height += bin->child->requisition.height;
 452           else
 453             requisition->width += bin->child->requisition.width;
 454         }
 455       else
 456         {
 457           if (hb->handle_position == GTK_POS_LEFT ||
 458               hb->handle_position == GTK_POS_RIGHT)
 459             requisition->height += widget->style->klass->ythickness;
 460           else
 461             requisition->width += widget->style->klass->xthickness;
 462         }
 463     }
 464   else
 465     {
 466       requisition->width += GTK_CONTAINER (widget)->border_width * 2;
 467       requisition->height += GTK_CONTAINER (widget)->border_width * 2;
 468
 469       if (bin->child)
 470         {
 471           requisition->width += bin->child->requisition.width;
 472           requisition->height += bin->child->requisition.height;
 473         }
 474       else
 475         {
 476           requisition->width += CHILDLESS_SIZE;
 477           requisition->height += CHILDLESS_SIZE;
 478         }
 479     }
 480 }
 481
 482 static void
 483 gtk_handle_box_size_allocate (GtkWidget     *widget,
 484                               GtkAllocation *allocation)
 485 {
 486   GtkBin *bin;
 487   GtkHandleBox *hb;
 488
 489   g_return_if_fail (widget != NULL);
 490   g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
 491   g_return_if_fail (allocation != NULL);
 492
 493   bin = GTK_BIN (widget);
 494   hb = GTK_HANDLE_BOX (widget);
 495
 496   widget->allocation.x = allocation->x;
 497
 498   if (hb->child_detached)
 499     {
 500       guint max_req_height;
 501       guint max_req_width;
 502
 503       max_req_height = MAX (widget->requisition.height,
 504                             bin->child->requisition.height +
 505                             2 * widget->style->klass->ythickness);
 506       max_req_width = MAX (widget->requisition.width,
 507                            bin->child->requisition.width +
 508                            2 * widget->style->klass->xthickness);
 509
 510       if (allocation->height > max_req_height)
 511         widget->allocation.y = allocation->y +
 512           (allocation->height - max_req_height) / 2;
 513       else
 514         widget->allocation.y = allocation->y;
 515
 516       widget->allocation.height = MIN (allocation->height, max_req_height);
 517       widget->allocation.width = MIN (allocation->width, max_req_width);
 518     }
 519   else
 520     {
 521       widget->allocation = *allocation;
 522     }
 523
 524   if (GTK_WIDGET_REALIZED (hb))
 525     gdk_window_move_resize (widget->window,
 526                             widget->allocation.x,
 527                             widget->allocation.y,
 528                             widget->allocation.width,
 529                             widget->allocation.height);
 530
 531
 532   if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
 533     {
 534       GtkWidget *child;
 535       GtkAllocation child_allocation;
 536       guint border_width;
 537
 538       child = bin->child;
 539       border_width = GTK_CONTAINER (widget)->border_width;
 540
 541       child_allocation.x = border_width;
 542       child_allocation.y = border_width;
 543       if (hb->handle_position == GTK_POS_LEFT)
 544         child_allocation.x += DRAG_HANDLE_SIZE;
 545       else if (hb->handle_position == GTK_POS_TOP)
 546         child_allocation.y += DRAG_HANDLE_SIZE;
 547
 548       if (hb->child_detached)
 549         {
 550           guint float_width;
 551           guint float_height;
 552
 553           child_allocation.width = child->requisition.width;
 554           child_allocation.height = child->requisition.height;
 555
 556           float_width = child_allocation.width + 2 * border_width;
 557           float_height = child_allocation.height + 2 * border_width;
 558
 559           if (hb->handle_position == GTK_POS_LEFT ||
 560               hb->handle_position == GTK_POS_RIGHT)
 561             float_width += DRAG_HANDLE_SIZE;
 562           else
 563             float_height += DRAG_HANDLE_SIZE;
 564
 565           if (GTK_WIDGET_REALIZED (hb))
 566             {
 567               gdk_window_resize (hb->float_window,
 568                                  float_width,
 569                                  float_height);
 570               gdk_window_move_resize (hb->bin_window,
 571                                       0,
 572                                       0,
 573                                       float_width,
 574                                       float_height);
 575             }
 576         }
 577       else
 578         {
 579           child_allocation.width = MAX (1, widget->allocation.width - 2 * border_width);
 580           child_allocation.height = MAX (1, widget->allocation.height - 2 * border_width);
 581
 582           if (hb->handle_position == GTK_POS_LEFT ||
 583               hb->handle_position == GTK_POS_RIGHT)
 584             child_allocation.width -= DRAG_HANDLE_SIZE;
 585           else
 586             child_allocation.height -= DRAG_HANDLE_SIZE;
 587
 588           if (GTK_WIDGET_REALIZED (hb))
 589             gdk_window_move_resize (hb->bin_window,
 590                                     0,
 591                                     0,
 592                                     widget->allocation.width,
 593                                     widget->allocation.height);
 594         }
 595
 596       gtk_widget_size_allocate (bin->child, &child_allocation);
 597     }
 598 }
 599
 600 static void
 601 gtk_handle_box_draw_ghost (GtkHandleBox *hb)
 602 {
 603   GtkWidget *widget;
 604   guint x;
 605   guint y;
 606   guint width;
 607   guint height;
 608
 609   widget = GTK_WIDGET (hb);
 610
 611   if (hb->handle_position == GTK_POS_LEFT ||
 612       hb->handle_position == GTK_POS_RIGHT)
 613     {
 614       x = hb->handle_position == GTK_POS_LEFT ? 0 : widget->allocation.width;
 615       y = 0;
 616       width = DRAG_HANDLE_SIZE;
 617       height = widget->allocation.height;
 618     }
 619   else
 620     {
 621       x = 0;
 622       y = hb->handle_position == GTK_POS_TOP ? 0 : widget->allocation.height;
 623       width = widget->allocation.width;
 624       height = DRAG_HANDLE_SIZE;
 625     }
 626   gtk_paint_shadow (widget->style,
 627                     widget->window,
 628                     GTK_WIDGET_STATE (widget),
 629                     GTK_SHADOW_ETCHED_IN,
 630                     NULL, widget, "handle",
 631                     x,
 632                     y,
 633                     width,
 634                     height);
 635    if (hb->handle_position == GTK_POS_LEFT ||
 636        hb->handle_position == GTK_POS_RIGHT)
 637      gtk_paint_hline (widget->style,
 638                       widget->window,
 639                       GTK_WIDGET_STATE (widget),
 640                       NULL, widget, "handlebox",
 641                       hb->handle_position == GTK_POS_LEFT ? DRAG_HANDLE_SIZE : widget->allocation.width - DRAG_HANDLE_SIZE,
 642                       widget->allocation.width - DRAG_HANDLE_SIZE,
 643                       widget->allocation.height / 2);
 644    else
 645      gtk_paint_vline (widget->style,
 646                       widget->window,
 647                       GTK_WIDGET_STATE (widget),
 648                       NULL, widget, "handlebox",
 649                       hb->handle_position == GTK_POS_TOP ? DRAG_HANDLE_SIZE : widget->allocation.height - DRAG_HANDLE_SIZE,
 650                       widget->allocation.height - DRAG_HANDLE_SIZE,
 651                       widget->allocation.width / 2);
 652 }
 653
 654 static void
 655 draw_textured_frame (GtkWidget *widget, GdkWindow *window, GdkRectangle *rect, GtkShadowType shadow,
 656                      GdkRectangle *clip)
 657 {
 658    gtk_paint_handle(widget->style, window, GTK_STATE_NORMAL, shadow,
 659                     NULL, widget, "handlebox",
 660                     rect->x, rect->y, rect->width, rect->height,
 661                     GTK_ORIENTATION_VERTICAL);
 662 }
 663
 664 void
 665 gtk_handle_box_set_shadow_type (GtkHandleBox  *handle_box,
 666                                 GtkShadowType  type)
 667 {
 668   g_return_if_fail (handle_box != NULL);
 669   g_return_if_fail (GTK_IS_HANDLE_BOX (handle_box));
 670
 671   if ((GtkShadowType) handle_box->shadow_type != type)
 672     {
 673       handle_box->shadow_type = type;
 674
 675       if (GTK_WIDGET_DRAWABLE (handle_box))
 676         {
 677           gtk_widget_queue_clear (GTK_WIDGET (handle_box));
 678         }
 679       gtk_widget_queue_resize (GTK_WIDGET (handle_box));
 680     }
 681 }
 682
 683 static void
 684 gtk_handle_box_paint (GtkWidget      *widget,
 685                       GdkEventExpose *event,
 686                       GdkRectangle   *area)
 687 {
 688   GtkBin *bin;
 689   GtkHandleBox *hb;
 690   guint width;
 691   guint height;
 692   guint border_width;
 693   GdkRectangle rect;
 694
 695   bin = GTK_BIN (widget);
 696   hb = GTK_HANDLE_BOX (widget);
 697
 698   border_width = GTK_CONTAINER (hb)->border_width;
 699
 700   if (hb->child_detached)
 701     {
 702       width = bin->child->allocation.width + 2 * border_width;
 703       height = bin->child->allocation.height + 2 * border_width;
 704     }
 705   else if (hb->handle_position == GTK_POS_LEFT ||
 706            hb->handle_position == GTK_POS_RIGHT)
 707     {
 708       width = widget->allocation.width - DRAG_HANDLE_SIZE;
 709       height = widget->allocation.height;
 710     }
 711   else
 712     {
 713       width = widget->allocation.width;
 714       height = widget->allocation.height - DRAG_HANDLE_SIZE;
 715     }
 716
 717   if (!event)
 718    gtk_paint_box(widget->style,
 719                  hb->bin_window,
 720                  GTK_WIDGET_STATE (widget),
 721                  hb->shadow_type,
 722                  area, widget, "handlebox_bin",
 723                  0, 0, -1, -1);
 724   else
 725    gtk_paint_box(widget->style,
 726                  hb->bin_window,
 727                  GTK_WIDGET_STATE (widget),
 728                  hb->shadow_type,
 729                  &event->area, widget, "handlebox_bin",
 730                  0, 0, -1, -1);
 731
 732 /* We currently draw the handle _above_ the relief of the handlebox.
 733  * it could also be drawn on the same level...
 734
 735                  hb->handle_position == GTK_POS_LEFT ? DRAG_HANDLE_SIZE : 0,
 736                  hb->handle_position == GTK_POS_TOP ? DRAG_HANDLE_SIZE : 0,
 737                  width,
 738                  height);*/
 739
 740   rect.x = 0;
 741   rect.y = 0;
 742   rect.width = (hb->handle_position == GTK_POS_LEFT) ? DRAG_HANDLE_SIZE : width;
 743   rect.height = (hb->handle_position == GTK_POS_TOP) ? DRAG_HANDLE_SIZE : height;
 744
 745   draw_textured_frame (widget, hb->bin_window, &rect, GTK_SHADOW_OUT, event ? &event->area : area);
 746
 747   if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
 748     {
 749       GdkRectangle child_area;
 750       GdkEventExpose child_event;
 751
 752       if (!event) /* we were called from draw() */
 753         {
 754           if (gtk_widget_intersect (bin->child, area, &child_area))
 755             gtk_widget_draw (bin->child, &child_area);
 756         }
 757       else /* we were called from expose() */
 758         {
 759           child_event = *event;
 760
 761           if (GTK_WIDGET_NO_WINDOW (bin->child) &&
 762               gtk_widget_intersect (bin->child, &event->area, &child_event.area))
 763             gtk_widget_event (bin->child, (GdkEvent *) &child_event);
 764         }
 765     }
 766 }
 767
 768 static void
 769 gtk_handle_box_draw (GtkWidget    *widget,
 770                      GdkRectangle *area)
 771 {
 772   GtkHandleBox *hb;
 773
 774   g_return_if_fail (widget != NULL);
 775   g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
 776   g_return_if_fail (area != NULL);
 777
 778   hb = GTK_HANDLE_BOX (widget);
 779
 780   if (GTK_WIDGET_DRAWABLE (widget))
 781     {
 782       if (hb->child_detached)
 783         {
 784           /* The area parameter does not make sense in this case, so we
 785            * repaint everything.
 786            */
 787
 788           gtk_handle_box_draw_ghost (hb);
 789
 790           area->x = 0;
 791           area->y = 0;
 792           area->width = 2 * GTK_CONTAINER (hb)->border_width + DRAG_HANDLE_SIZE;
 793           area->height = area->width + GTK_BIN (hb)->child->allocation.height;
 794           area->width += GTK_BIN (hb)->child->allocation.width;
 795
 796           gtk_handle_box_paint (widget, NULL, area);
 797         }
 798       else
 799         gtk_handle_box_paint (widget, NULL, area);
 800     }
 801 }
 802
 803 static gint
 804 gtk_handle_box_expose (GtkWidget      *widget,
 805                        GdkEventExpose *event)
 806 {
 807   GtkHandleBox *hb;
 808
 809   g_return_val_if_fail (widget != NULL, FALSE);
 810   g_return_val_if_fail (GTK_IS_HANDLE_BOX (widget), FALSE);
 811   g_return_val_if_fail (event != NULL, FALSE);
 812
 813   if (GTK_WIDGET_DRAWABLE (widget))
 814     {
 815       hb = GTK_HANDLE_BOX (widget);
 816
 817       if (event->window == widget->window)
 818         {
 819           if (hb->child_detached)
 820             gtk_handle_box_draw_ghost (hb);
 821         }
 822       else
 823         gtk_handle_box_paint (widget, event, NULL);
 824     }
 825
 826   return FALSE;
 827 }
 828
 829 static gint
 830 gtk_handle_box_button_changed (GtkWidget      *widget,
 831                                GdkEventButton *event)
 832 {
 833   GtkHandleBox *hb;
 834   gboolean event_handled;
 835   GdkCursor *fleur;
 836
 837   g_return_val_if_fail (widget != NULL, FALSE);
 838   g_return_val_if_fail (GTK_IS_HANDLE_BOX (widget), FALSE);
 839   g_return_val_if_fail (event != NULL, FALSE);
 840
 841   hb = GTK_HANDLE_BOX (widget);
 842
 843   if (event->window != hb->bin_window)
 844     return FALSE;
 845
 846   event_handled = FALSE;
 847   if (event->button == 1 &&
 848       event->type == GDK_BUTTON_PRESS)
 849     {
 850       GtkWidget *child;
 851       gboolean in_handle;
 852
 853       child = GTK_BIN (hb)->child;
 854
 855       switch (hb->handle_position)
 856         {
 857         case GTK_POS_LEFT:
 858           in_handle = event->x < DRAG_HANDLE_SIZE;
 859           break;
 860         case GTK_POS_TOP:
 861           in_handle = event->y < DRAG_HANDLE_SIZE;
 862           break;
 863         case GTK_POS_RIGHT:
 864           in_handle = event->x > 2 * GTK_CONTAINER (hb)->border_width + child->allocation.width;
 865           break;
 866         case GTK_POS_BOTTOM:
 867           in_handle = event->y > 2 * GTK_CONTAINER (hb)->border_width + child->allocation.height;
 868           break;
 869         default:
 870           in_handle = FALSE;
 871           break;
 872         }
 873
 874       if (!child)
 875         {
 876           in_handle = FALSE;
 877           event_handled = TRUE;
 878         }
 879
 880       if (in_handle)
 881         {
 882           hb->dragoff_x = event->x;
 883           hb->dragoff_y = event->y;
 884
 885           gtk_grab_add (widget);
 886           hb->in_drag = TRUE;
 887           fleur = gdk_cursor_new (GDK_FLEUR);
 888           while (gdk_pointer_grab (hb->bin_window,
 889                                    FALSE,
 890                                    (GDK_BUTTON1_MOTION_MASK |
 891                                     GDK_POINTER_MOTION_HINT_MASK |
 892                                     GDK_BUTTON_RELEASE_MASK),
 893                                    NULL,
 894                                    fleur,
 895                                    GDK_CURRENT_TIME) != 0); /* wait for success */
 896           gdk_cursor_destroy (fleur);
 897           event_handled = TRUE;
 898         }
 899     }
 900   else if (event->type == GDK_BUTTON_RELEASE &&
 901            hb->in_drag)
 902     {
 903       gdk_pointer_ungrab (GDK_CURRENT_TIME);
 904       gtk_grab_remove (widget);
 905       hb->in_drag = FALSE;
 906       event_handled = TRUE;
 907     }
 908
 909   return event_handled;
 910 }
 911
 912 static gint
 913 gtk_handle_box_motion (GtkWidget      *widget,
 914                        GdkEventMotion *event)
 915 {
 916   GtkHandleBox *hb;
 917   gint new_x, new_y;
 918   gint ox, oy;
 919   gint snap_x, snap_y;
 920   gboolean in_handle;
 921   GdkCursor *fleur;
 922
 923   g_return_val_if_fail (widget != NULL, FALSE);
 924   g_return_val_if_fail (GTK_IS_HANDLE_BOX (widget), FALSE);
 925   g_return_val_if_fail (event != NULL, FALSE);
 926
 927   hb = GTK_HANDLE_BOX (widget);
 928   if (!hb->in_drag)
 929     return FALSE;
 930
 931   if (event->window != hb->bin_window)
 932     return FALSE;
 933
 934   ox = 0;
 935   oy = 0;
 936   gdk_window_get_deskrelative_origin (hb->float_window, &ox, &oy);
 937   new_x = 0;
 938   new_y = 0;
 939   gdk_window_get_pointer (hb->float_window, &new_x, &new_y, NULL);
 940   new_x += ox;
 941   new_y += oy;
 942   new_x -= hb->dragoff_x;
 943   new_y -= hb->dragoff_y;
 944   snap_x = 0;
 945   snap_y = 0;
 946   gdk_window_get_pointer (widget->window, &snap_x, &snap_y, NULL);
 947
 948   switch (hb->handle_position)
 949     {
 950     case GTK_POS_LEFT:
 951       in_handle = (snap_x >= 0 && snap_x <= DRAG_HANDLE_SIZE &&
 952                    snap_y >= 0 && snap_y <= widget->allocation.height);
 953       break;
 954     case GTK_POS_TOP:
 955       in_handle = (snap_x >= 0 && snap_x <= widget->allocation.width &&
 956                    snap_y >= 0 && snap_y <= DRAG_HANDLE_SIZE);
 957       break;
 958     case GTK_POS_RIGHT:
 959       in_handle = (snap_x >= widget->allocation.width - DRAG_HANDLE_SIZE && snap_x <= widget->allocation.width &&
 960                    snap_y >= 0 && snap_y <= widget->allocation.height);
 961       break;
 962     case GTK_POS_BOTTOM:
 963       in_handle = (snap_x >= 0 && snap_x <= widget->allocation.width &&
 964                    snap_y >= widget->allocation.height - DRAG_HANDLE_SIZE && snap_y <= widget->allocation.height);
 965       break;
 966     default:
 967       in_handle = FALSE;
 968       break;
 969     }
 970
 971   if (in_handle)
 972     {
 973       if (hb->child_detached)
 974         {
 975           gdk_pointer_ungrab (GDK_CURRENT_TIME);
 976
 977           hb->child_detached = FALSE;
 978           gdk_window_hide (hb->float_window);
 979           gdk_window_reparent (hb->bin_window, widget->window, 0, 0);
 980           hb->float_window_mapped = FALSE;
 981           gtk_signal_emit (GTK_OBJECT (hb),
 982                            handle_box_signals[SIGNAL_CHILD_ATTACHED],
 983                            GTK_BIN (hb)->child);
 984
 985           fleur = gdk_cursor_new (GDK_FLEUR);
 986           while (gdk_pointer_grab (hb->bin_window,
 987                                    FALSE,
 988                                    (GDK_BUTTON1_MOTION_MASK |
 989                                     GDK_POINTER_MOTION_HINT_MASK |
 990                                     GDK_BUTTON_RELEASE_MASK),
 991                                    NULL,
 992                                    fleur,
 993                                    GDK_CURRENT_TIME) != 0); /* wait for success */
 994           gdk_cursor_destroy (fleur);
 995
 996           gtk_widget_queue_resize (widget);
 997         }
 998     }
 999   else
1000     {
1001       if (hb->child_detached)
1002         {
1003           gdk_window_move (hb->float_window, new_x, new_y);
1004           gdk_window_raise (hb->float_window);
1005         }
1006       else
1007         {
1008           gint width;
1009           gint height;
1010
1011           gdk_pointer_ungrab (GDK_CURRENT_TIME);
1012
1013           hb->child_detached = TRUE;
1014           width = 0;
1015           height = 0;
1016           gdk_window_get_size (hb->bin_window, &width, &height);
1017           gdk_window_move_resize (hb->float_window, new_x, new_y, width, height);
1018           gdk_window_reparent (hb->bin_window, hb->float_window, 0, 0);
1019           gdk_window_set_hints (hb->float_window, new_x, new_y, 0, 0, 0, 0, GDK_HINT_POS);
1020           gdk_window_show (hb->float_window);
1021           hb->float_window_mapped = TRUE;
1022 #if     0
1023           /* this extra move is neccessary if we use decorations, or our
1024            * window manager insists on decorations.
1025            */
1026           gdk_flush ();
1027           gdk_window_move (hb->float_window, new_x, new_y);
1028           gdk_flush ();
1029 #endif  /* 0 */
1030           gtk_signal_emit (GTK_OBJECT (hb),
1031                            handle_box_signals[SIGNAL_CHILD_DETACHED],
1032                            GTK_BIN (hb)->child);
1033           gtk_handle_box_draw_ghost (hb);
1034
1035           fleur = gdk_cursor_new (GDK_FLEUR);
1036           while (gdk_pointer_grab (hb->bin_window,
1037                                    FALSE,
1038                                    (GDK_BUTTON1_MOTION_MASK |
1039                                     GDK_POINTER_MOTION_HINT_MASK |
1040                                     GDK_BUTTON_RELEASE_MASK),
1041                                    NULL,
1042                                    fleur,
1043                                    GDK_CURRENT_TIME) != 0); /* wait for success */
1044           gdk_cursor_destroy (fleur);
1045
1046           gtk_widget_queue_resize (widget);
1047         }
1048     }
1049
1050   return TRUE;
1051 }
1052
1053 static void
1054 gtk_handle_box_add (GtkContainer *container,
1055                     GtkWidget    *widget)
1056 {
1057   g_return_if_fail (GTK_IS_HANDLE_BOX (container));
1058   g_return_if_fail (GTK_BIN (container)->child == NULL);
1059   g_return_if_fail (widget->parent == NULL);
1060
1061   gtk_widget_set_parent_window (widget, GTK_HANDLE_BOX (container)->bin_window);
1062   GTK_CONTAINER_CLASS (parent_class)->add (container, widget);
1063 }
1064
1065 static void
1066 gtk_handle_box_remove (GtkContainer *container,
1067                        GtkWidget    *widget)
1068 {
1069   GtkHandleBox *hb;
1070
1071   g_return_if_fail (GTK_IS_HANDLE_BOX (container));
1072   g_return_if_fail (GTK_BIN (container)->child == widget);
1073
1074   hb = GTK_HANDLE_BOX (container);
1075
1076   if (hb->child_detached)
1077     {
1078       hb->child_detached = FALSE;
1079       if (GTK_WIDGET_REALIZED (hb))
1080         {
1081           gdk_window_hide (hb->float_window);
1082           gdk_window_reparent (hb->bin_window, GTK_WIDGET (hb)->window, 0, 0);
1083         }
1084       hb->float_window_mapped = FALSE;
1085     }
1086   if (hb->in_drag)
1087     {
1088       gdk_pointer_ungrab (GDK_CURRENT_TIME);
1089       gtk_grab_remove (GTK_WIDGET (container));
1090       hb->in_drag = FALSE;
1091     }
1092
1093   GTK_CONTAINER_CLASS (parent_class)->remove (container, widget);
1094 }
1095
1096 static gint
1097 gtk_handle_box_delete_event (GtkWidget *widget,
1098                              GdkEventAny  *event)
1099 {
1100   GtkHandleBox *hb;
1101
1102   g_return_val_if_fail (widget != NULL, FALSE);
1103   g_return_val_if_fail (GTK_IS_HANDLE_BOX (widget), FALSE);
1104   g_return_val_if_fail (event != NULL, FALSE);
1105
1106   hb = GTK_HANDLE_BOX (widget);
1107   g_return_val_if_fail (event->window == hb->float_window, FALSE);
1108
1109   hb->child_detached = FALSE;
1110   gdk_window_hide (hb->float_window);
1111   gdk_window_reparent (hb->bin_window, widget->window, 0, 0);
1112   hb->float_window_mapped = FALSE;
1113   gtk_signal_emit (GTK_OBJECT (hb),
1114                    handle_box_signals[SIGNAL_CHILD_ATTACHED],
1115                    GTK_BIN (hb)->child);
1116   if (hb->in_drag)
1117     {
1118       gdk_pointer_ungrab (GDK_CURRENT_TIME);
1119       gtk_grab_remove (widget);
1120       hb->in_drag = FALSE;
1121     }
1122
1123   gtk_widget_queue_resize (GTK_WIDGET (hb));
1124
1125   return TRUE;
1126 }
1127