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