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   gdk_window_set_back_pixmap (widget->window, NULL, TRUE);
 312 }
 313
 314 static void
 315 gtk_handle_box_unrealize (GtkWidget *widget)
 316 {
 317   GtkHandleBox *hb;
 318
 319   g_return_if_fail (widget != NULL);
 320   g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
 321
 322   hb = GTK_HANDLE_BOX (widget);
 323
 324   gdk_window_set_user_data (hb->bin_window, NULL);
 325   gdk_window_destroy (hb->bin_window);
 326   hb->bin_window = NULL;
 327   gdk_window_set_user_data (hb->float_window, NULL);
 328   gdk_window_destroy (hb->float_window);
 329   hb->float_window = NULL;
 330
 331   if (GTK_WIDGET_CLASS (parent_class)->unrealize)
 332     (* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
 333 }
 334
 335 static void
 336 gtk_handle_box_style_set (GtkWidget *widget,
 337                           GtkStyle  *previous_style)
 338 {
 339   GtkHandleBox *hb;
 340
 341   g_return_if_fail (widget != NULL);
 342   g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
 343
 344   hb = GTK_HANDLE_BOX (widget);
 345
 346   if (GTK_WIDGET_REALIZED (widget) &&
 347       !GTK_WIDGET_NO_WINDOW (widget))
 348     {
 349       gtk_style_set_background (widget->style, widget->window,
 350 widget->state);
 351       gtk_style_set_background (widget->style, hb->bin_window, widget->state);
 352       gtk_style_set_background (widget->style, hb->float_window, widget->state);
 353       if (GTK_WIDGET_DRAWABLE (widget))
 354         gdk_window_clear (widget->window);
 355     }
 356 }
 357
 358 static void
 359 gtk_handle_box_size_request (GtkWidget      *widget,
 360                              GtkRequisition *requisition)
 361 {
 362   GtkBin *bin;
 363   GtkHandleBox *hb;
 364
 365   g_return_if_fail (widget != NULL);
 366   g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
 367   g_return_if_fail (requisition != NULL);
 368
 369   bin = GTK_BIN (widget);
 370   hb = GTK_HANDLE_BOX (widget);
 371
 372   if (hb->handle_position == GTK_POS_LEFT ||
 373       hb->handle_position == GTK_POS_RIGHT)
 374     {
 375       requisition->width = DRAG_HANDLE_SIZE;
 376       requisition->height = 0;
 377     }
 378   else
 379     {
 380       requisition->width = 0;
 381       requisition->height = DRAG_HANDLE_SIZE;
 382     }
 383
 384   /* if our child is not visible, we still request its size, since we
 385    * won't have any usefull hint for our size otherwise.
 386    */
 387   if (bin->child)
 388     gtk_widget_size_request (bin->child, &bin->child->requisition);
 389
 390   if (hb->child_detached)
 391     {
 392       if (!hb->shrink_on_detach)
 393         {
 394           if (hb->handle_position == GTK_POS_LEFT ||
 395               hb->handle_position == GTK_POS_RIGHT)
 396             requisition->height += bin->child->requisition.height;
 397           else
 398             requisition->width += bin->child->requisition.width;
 399         }
 400       else
 401         {
 402           if (hb->handle_position == GTK_POS_LEFT ||
 403               hb->handle_position == GTK_POS_RIGHT)
 404             requisition->height += widget->style->klass->ythickness;
 405           else
 406             requisition->width += widget->style->klass->xthickness;
 407         }
 408     }
 409   else
 410     {
 411       requisition->width += GTK_CONTAINER (widget)->border_width * 2;
 412       requisition->height += GTK_CONTAINER (widget)->border_width * 2;
 413
 414       if (bin->child)
 415         {
 416           requisition->width += bin->child->requisition.width;
 417           requisition->height += bin->child->requisition.height;
 418         }
 419       else
 420         {
 421           requisition->width += CHILDLESS_SIZE;
 422           requisition->height += CHILDLESS_SIZE;
 423         }
 424     }
 425 }
 426
 427 static void
 428 gtk_handle_box_size_allocate (GtkWidget     *widget,
 429                               GtkAllocation *allocation)
 430 {
 431   GtkBin *bin;
 432   GtkHandleBox *hb;
 433
 434   g_return_if_fail (widget != NULL);
 435   g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
 436   g_return_if_fail (allocation != NULL);
 437
 438   bin = GTK_BIN (widget);
 439   hb = GTK_HANDLE_BOX (widget);
 440
 441   widget->allocation.x = allocation->x;
 442
 443   if (hb->child_detached)
 444     {
 445       guint max_req_height;
 446       guint max_req_width;
 447
 448       max_req_height = MAX (widget->requisition.height,
 449                             bin->child->requisition.height +
 450                             2 * widget->style->klass->ythickness);
 451       max_req_width = MAX (widget->requisition.width,
 452                            bin->child->requisition.width +
 453                            2 * widget->style->klass->xthickness);
 454
 455       if (allocation->height > max_req_height)
 456         widget->allocation.y = allocation->y +
 457           (allocation->height - max_req_height) / 2;
 458       else
 459         widget->allocation.y = allocation->y;
 460
 461       widget->allocation.height = MIN (allocation->height, max_req_height);
 462       widget->allocation.width = MIN (allocation->width, max_req_width);
 463     }
 464   else
 465     {
 466       widget->allocation = *allocation;
 467     }
 468
 469   if (GTK_WIDGET_REALIZED (hb))
 470     gdk_window_move_resize (widget->window,
 471                             widget->allocation.x,
 472                             widget->allocation.y,
 473                             widget->allocation.width,
 474                             widget->allocation.height);
 475
 476
 477   if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
 478     {
 479       GtkWidget *child;
 480       GtkAllocation child_allocation;
 481       guint border_width;
 482
 483       child = bin->child;
 484       border_width = GTK_CONTAINER (widget)->border_width;
 485
 486       child_allocation.x = border_width;
 487       child_allocation.y = border_width;
 488       if (hb->handle_position == GTK_POS_LEFT)
 489         child_allocation.x += DRAG_HANDLE_SIZE;
 490       else if (hb->handle_position == GTK_POS_TOP)
 491         child_allocation.y += DRAG_HANDLE_SIZE;
 492
 493       if (hb->child_detached)
 494         {
 495           guint float_width;
 496           guint float_height;
 497
 498           child_allocation.width = child->requisition.width;
 499           child_allocation.height = child->requisition.height;
 500
 501           float_width = child_allocation.width + 2 * border_width;
 502           float_height = child_allocation.height + 2 * border_width;
 503
 504           if (hb->handle_position == GTK_POS_LEFT ||
 505               hb->handle_position == GTK_POS_RIGHT)
 506             float_width += DRAG_HANDLE_SIZE;
 507           else
 508             float_height += DRAG_HANDLE_SIZE;
 509
 510           if (GTK_WIDGET_REALIZED (hb))
 511             {
 512               gdk_window_resize (hb->float_window,
 513                                  float_width,
 514                                  float_height);
 515               gdk_window_move_resize (hb->bin_window,
 516                                       0,
 517                                       0,
 518                                       float_width,
 519                                       float_height);
 520             }
 521         }
 522       else
 523         {
 524           child_allocation.width = MAX (1, widget->allocation.width - 2 * border_width);
 525           child_allocation.height = MAX (1, widget->allocation.height - 2 * border_width);
 526
 527           if (hb->handle_position == GTK_POS_LEFT ||
 528               hb->handle_position == GTK_POS_RIGHT)
 529             child_allocation.width -= DRAG_HANDLE_SIZE;
 530           else
 531             child_allocation.height -= DRAG_HANDLE_SIZE;
 532
 533           if (GTK_WIDGET_REALIZED (hb))
 534             gdk_window_move_resize (hb->bin_window,
 535                                     0,
 536                                     0,
 537                                     widget->allocation.width,
 538                                     widget->allocation.height);
 539         }
 540
 541       gtk_widget_size_allocate (bin->child, &child_allocation);
 542     }
 543 }
 544
 545 static void
 546 gtk_handle_box_draw_ghost (GtkHandleBox *hb)
 547 {
 548   GtkWidget *widget;
 549   guint x;
 550   guint y;
 551   guint width;
 552   guint height;
 553
 554   widget = GTK_WIDGET (hb);
 555
 556   if (hb->handle_position == GTK_POS_LEFT ||
 557       hb->handle_position == GTK_POS_RIGHT)
 558     {
 559       x = hb->handle_position == GTK_POS_LEFT ? 0 : widget->allocation.width;
 560       y = 0;
 561       width = DRAG_HANDLE_SIZE;
 562       height = widget->allocation.height;
 563     }
 564   else
 565     {
 566       x = 0;
 567       y = hb->handle_position == GTK_POS_TOP ? 0 : widget->allocation.height;
 568       width = widget->allocation.width;
 569       height = DRAG_HANDLE_SIZE;
 570     }
 571   gtk_paint_shadow (widget->style,
 572                     widget->window,
 573                     GTK_WIDGET_STATE (widget),
 574                     GTK_SHADOW_ETCHED_IN,
 575                     NULL, widget, "handle",
 576                     x,
 577                     y,
 578                     width,
 579                     height);
 580    if (hb->handle_position == GTK_POS_LEFT ||
 581        hb->handle_position == GTK_POS_RIGHT)
 582      gtk_paint_hline (widget->style,
 583                       widget->window,
 584                       GTK_WIDGET_STATE (widget),
 585                       NULL, widget, "handlebox",
 586                       hb->handle_position == GTK_POS_LEFT ? DRAG_HANDLE_SIZE : widget->allocation.width - DRAG_HANDLE_SIZE,
 587                       widget->allocation.width - DRAG_HANDLE_SIZE,
 588                       widget->allocation.height / 2);
 589    else
 590      gtk_paint_vline (widget->style,
 591                       widget->window,
 592                       GTK_WIDGET_STATE (widget),
 593                       NULL, widget, "handlebox",
 594                       hb->handle_position == GTK_POS_TOP ? DRAG_HANDLE_SIZE : widget->allocation.height - DRAG_HANDLE_SIZE,
 595                       widget->allocation.height - DRAG_HANDLE_SIZE,
 596                       widget->allocation.width / 2);
 597 }
 598
 599 static void
 600 draw_textured_frame (GtkWidget *widget, GdkWindow *window, GdkRectangle *rect, GtkShadowType shadow,
 601                      GdkRectangle *clip)
 602 {
 603    gtk_paint_handle(widget->style, window, GTK_STATE_NORMAL, shadow,
 604                     NULL, widget, "handlebox",
 605                     rect->x, rect->y, rect->width, rect->height,
 606                     GTK_ORIENTATION_VERTICAL);
 607 }
 608
 609 static void
 610 gtk_handle_box_paint (GtkWidget      *widget,
 611                       GdkEventExpose *event,
 612                       GdkRectangle   *area)
 613 {
 614   GtkBin *bin;
 615   GtkHandleBox *hb;
 616   guint width;
 617   guint height;
 618   guint border_width;
 619   GdkRectangle rect;
 620
 621   bin = GTK_BIN (widget);
 622   hb = GTK_HANDLE_BOX (widget);
 623
 624   border_width = GTK_CONTAINER (hb)->border_width;
 625
 626   if (hb->child_detached)
 627     {
 628       width = bin->child->allocation.width + 2 * border_width;
 629       height = bin->child->allocation.height + 2 * border_width;
 630     }
 631   else if (hb->handle_position == GTK_POS_LEFT ||
 632            hb->handle_position == GTK_POS_RIGHT)
 633     {
 634       width = widget->allocation.width - DRAG_HANDLE_SIZE;
 635       height = widget->allocation.height;
 636     }
 637   else
 638     {
 639       width = widget->allocation.width;
 640       height = widget->allocation.height - DRAG_HANDLE_SIZE;
 641     }
 642
 643   if (!event)
 644    gtk_paint_box(widget->style,
 645                  hb->bin_window,
 646                  GTK_WIDGET_STATE (widget),
 647                  GTK_SHADOW_OUT,
 648                  area, widget, "handlebox_bin",
 649                  0, 0, -1, -1);
 650   else
 651    gtk_paint_box(widget->style,
 652                  hb->bin_window,
 653                  GTK_WIDGET_STATE (widget),
 654                  GTK_SHADOW_OUT,
 655                  &event->area, widget, "handlebox_bin",
 656                  0, 0, -1, -1);
 657
 658 /* We currently draw the handle _above_ the relief of the handlebox.
 659  * it could also be drawn on the same level...
 660
 661                  hb->handle_position == GTK_POS_LEFT ? DRAG_HANDLE_SIZE : 0,
 662                  hb->handle_position == GTK_POS_TOP ? DRAG_HANDLE_SIZE : 0,
 663                  width,
 664                  height);*/
 665
 666   rect.x = 0;
 667   rect.y = 0;
 668   rect.width = (hb->handle_position == GTK_POS_LEFT) ? DRAG_HANDLE_SIZE : width;
 669   rect.height = (hb->handle_position == GTK_POS_TOP) ? DRAG_HANDLE_SIZE : height;
 670
 671   draw_textured_frame (widget, hb->bin_window, &rect, GTK_SHADOW_OUT, event ? &event->area : area);
 672
 673   if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
 674     {
 675       GdkRectangle child_area;
 676       GdkEventExpose child_event;
 677
 678       if (!event) /* we were called from draw() */
 679         {
 680           if (gtk_widget_intersect (bin->child, area, &child_area))
 681             gtk_widget_draw (bin->child, &child_area);
 682         }
 683       else /* we were called from expose() */
 684         {
 685           child_event = *event;
 686
 687           if (GTK_WIDGET_NO_WINDOW (bin->child) &&
 688               gtk_widget_intersect (bin->child, &event->area, &child_event.area))
 689             gtk_widget_event (bin->child, (GdkEvent *) &child_event);
 690         }
 691     }
 692 }
 693
 694 static void
 695 gtk_handle_box_draw (GtkWidget    *widget,
 696                      GdkRectangle *area)
 697 {
 698   GtkHandleBox *hb;
 699
 700   g_return_if_fail (widget != NULL);
 701   g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
 702   g_return_if_fail (area != NULL);
 703
 704   hb = GTK_HANDLE_BOX (widget);
 705
 706   if (GTK_WIDGET_DRAWABLE (widget))
 707     {
 708       if (hb->child_detached)
 709         {
 710           /* The area parameter does not make sense in this case, so we
 711            * repaint everything.
 712            */
 713
 714           gtk_handle_box_draw_ghost (hb);
 715
 716           area->x = 0;
 717           area->y = 0;
 718           area->width = 2 * GTK_CONTAINER (hb)->border_width + DRAG_HANDLE_SIZE;
 719           area->height = area->width + GTK_BIN (hb)->child->allocation.height;
 720           area->width += GTK_BIN (hb)->child->allocation.width;
 721
 722           gtk_handle_box_paint (widget, NULL, area);
 723         }
 724       else
 725         gtk_handle_box_paint (widget, NULL, area);
 726     }
 727 }
 728
 729 static gint
 730 gtk_handle_box_expose (GtkWidget      *widget,
 731                        GdkEventExpose *event)
 732 {
 733   GtkHandleBox *hb;
 734
 735   g_return_val_if_fail (widget != NULL, FALSE);
 736   g_return_val_if_fail (GTK_IS_HANDLE_BOX (widget), FALSE);
 737   g_return_val_if_fail (event != NULL, FALSE);
 738
 739   if (GTK_WIDGET_DRAWABLE (widget))
 740     {
 741       hb = GTK_HANDLE_BOX (widget);
 742
 743       if (event->window == widget->window)
 744         {
 745           if (hb->child_detached)
 746             gtk_handle_box_draw_ghost (hb);
 747         }
 748       else
 749         gtk_handle_box_paint (widget, event, NULL);
 750     }
 751
 752   return FALSE;
 753 }
 754
 755 static gint
 756 gtk_handle_box_button_changed (GtkWidget      *widget,
 757                                GdkEventButton *event)
 758 {
 759   GtkHandleBox *hb;
 760   gboolean event_handled;
 761   GdkCursor *fleur;
 762
 763   g_return_val_if_fail (widget != NULL, FALSE);
 764   g_return_val_if_fail (GTK_IS_HANDLE_BOX (widget), FALSE);
 765   g_return_val_if_fail (event != NULL, FALSE);
 766
 767   hb = GTK_HANDLE_BOX (widget);
 768
 769   if (event->window != hb->bin_window)
 770     return FALSE;
 771
 772   event_handled = FALSE;
 773   if (event->button == 1 &&
 774       event->type == GDK_BUTTON_PRESS)
 775     {
 776       GtkWidget *child;
 777       gboolean in_handle;
 778
 779       child = GTK_BIN (hb)->child;
 780
 781       switch (hb->handle_position)
 782         {
 783         case GTK_POS_LEFT:
 784           in_handle = event->x < DRAG_HANDLE_SIZE;
 785           break;
 786         case GTK_POS_TOP:
 787           in_handle = event->y < DRAG_HANDLE_SIZE;
 788           break;
 789         case GTK_POS_RIGHT:
 790           in_handle = event->x > 2 * GTK_CONTAINER (hb)->border_width + child->allocation.width;
 791           break;
 792         case GTK_POS_BOTTOM:
 793           in_handle = event->y > 2 * GTK_CONTAINER (hb)->border_width + child->allocation.height;
 794           break;
 795         default:
 796           in_handle = FALSE;
 797           break;
 798         }
 799
 800       if (!child)
 801         {
 802           in_handle = FALSE;
 803           event_handled = TRUE;
 804         }
 805
 806       if (in_handle)
 807         {
 808           hb->dragoff_x = event->x;
 809           hb->dragoff_y = event->y;
 810
 811           gtk_grab_add (widget);
 812           hb->in_drag = TRUE;
 813           fleur = gdk_cursor_new (GDK_FLEUR);
 814           while (gdk_pointer_grab (hb->bin_window,
 815                                    FALSE,
 816                                    (GDK_BUTTON1_MOTION_MASK |
 817                                     GDK_POINTER_MOTION_HINT_MASK |
 818                                     GDK_BUTTON_RELEASE_MASK),
 819                                    NULL,
 820                                    fleur,
 821                                    GDK_CURRENT_TIME) != 0); /* wait for success */
 822           gdk_cursor_destroy (fleur);
 823           event_handled = TRUE;
 824         }
 825     }
 826   else if (event->type == GDK_BUTTON_RELEASE &&
 827            hb->in_drag)
 828     {
 829       gdk_pointer_ungrab (GDK_CURRENT_TIME);
 830       gtk_grab_remove (widget);
 831       hb->in_drag = FALSE;
 832       event_handled = TRUE;
 833     }
 834
 835   return event_handled;
 836 }
 837
 838 static gint
 839 gtk_handle_box_motion (GtkWidget      *widget,
 840                        GdkEventMotion *event)
 841 {
 842   GtkHandleBox *hb;
 843   gint new_x, new_y;
 844   gint ox, oy;
 845   gint snap_x, snap_y;
 846   gboolean in_handle;
 847   GdkCursor *fleur;
 848
 849   g_return_val_if_fail (widget != NULL, FALSE);
 850   g_return_val_if_fail (GTK_IS_HANDLE_BOX (widget), FALSE);
 851   g_return_val_if_fail (event != NULL, FALSE);
 852
 853   hb = GTK_HANDLE_BOX (widget);
 854   if (!hb->in_drag)
 855     return FALSE;
 856
 857   if (event->window != hb->bin_window)
 858     return FALSE;
 859
 860   ox = 0;
 861   oy = 0;
 862   gdk_window_get_deskrelative_origin (hb->float_window, &ox, &oy);
 863   new_x = 0;
 864   new_y = 0;
 865   gdk_window_get_pointer (hb->float_window, &new_x, &new_y, NULL);
 866   new_x += ox;
 867   new_y += oy;
 868   new_x -= hb->dragoff_x;
 869   new_y -= hb->dragoff_y;
 870   snap_x = 0;
 871   snap_y = 0;
 872   gdk_window_get_pointer (widget->window, &snap_x, &snap_y, NULL);
 873
 874   switch (hb->handle_position)
 875     {
 876     case GTK_POS_LEFT:
 877       in_handle = (snap_x >= 0 && snap_x <= DRAG_HANDLE_SIZE &&
 878                    snap_y >= 0 && snap_y <= widget->allocation.height);
 879       break;
 880     case GTK_POS_TOP:
 881       in_handle = (snap_x >= 0 && snap_x <= widget->allocation.width &&
 882                    snap_y >= 0 && snap_y <= DRAG_HANDLE_SIZE);
 883       break;
 884     case GTK_POS_RIGHT:
 885       in_handle = (snap_x >= widget->allocation.width - DRAG_HANDLE_SIZE && snap_x <= widget->allocation.width &&
 886                    snap_y >= 0 && snap_y <= widget->allocation.height);
 887       break;
 888     case GTK_POS_BOTTOM:
 889       in_handle = (snap_x >= 0 && snap_x <= widget->allocation.width &&
 890                    snap_y >= widget->allocation.height - DRAG_HANDLE_SIZE && snap_y <= widget->allocation.height);
 891       break;
 892     default:
 893       in_handle = FALSE;
 894       break;
 895     }
 896
 897   if (in_handle)
 898     {
 899       if (hb->child_detached)
 900         {
 901           gdk_pointer_ungrab (GDK_CURRENT_TIME);
 902
 903           hb->child_detached = FALSE;
 904           gdk_window_hide (hb->float_window);
 905           gdk_window_reparent (hb->bin_window, widget->window, 0, 0);
 906           hb->float_window_mapped = FALSE;
 907           gtk_signal_emit (GTK_OBJECT (hb),
 908                            handle_box_signals[SIGNAL_CHILD_ATTACHED],
 909                            GTK_BIN (hb)->child);
 910
 911           fleur = gdk_cursor_new (GDK_FLEUR);
 912           while (gdk_pointer_grab (hb->bin_window,
 913                                    FALSE,
 914                                    (GDK_BUTTON1_MOTION_MASK |
 915                                     GDK_POINTER_MOTION_HINT_MASK |
 916                                     GDK_BUTTON_RELEASE_MASK),
 917                                    NULL,
 918                                    fleur,
 919                                    GDK_CURRENT_TIME) != 0); /* wait for success */
 920           gdk_cursor_destroy (fleur);
 921
 922           gtk_widget_queue_resize (widget);
 923         }
 924     }
 925   else
 926     {
 927       if (hb->child_detached)
 928         {
 929           gdk_window_move (hb->float_window, new_x, new_y);
 930           gdk_window_raise (hb->float_window);
 931         }
 932       else
 933         {
 934           gint width;
 935           gint height;
 936
 937           gdk_pointer_ungrab (GDK_CURRENT_TIME);
 938
 939           hb->child_detached = TRUE;
 940           width = 0;
 941           height = 0;
 942           gdk_window_get_size (hb->bin_window, &width, &height);
 943           gdk_window_move_resize (hb->float_window, new_x, new_y, width, height);
 944           gdk_window_reparent (hb->bin_window, hb->float_window, 0, 0);
 945           gdk_window_set_hints (hb->float_window, new_x, new_y, 0, 0, 0, 0, GDK_HINT_POS);
 946           gdk_window_show (hb->float_window);
 947           hb->float_window_mapped = TRUE;
 948 #if     0
 949           /* this extra move is neccessary if we use decorations, or our
 950            * window manager insists on decorations.
 951            */
 952           gdk_flush ();
 953           gdk_window_move (hb->float_window, new_x, new_y);
 954           gdk_flush ();
 955 #endif  /* 0 */
 956           gtk_signal_emit (GTK_OBJECT (hb),
 957                            handle_box_signals[SIGNAL_CHILD_DETACHED],
 958                            GTK_BIN (hb)->child);
 959           gtk_handle_box_draw_ghost (hb);
 960
 961           fleur = gdk_cursor_new (GDK_FLEUR);
 962           while (gdk_pointer_grab (hb->bin_window,
 963                                    FALSE,
 964                                    (GDK_BUTTON1_MOTION_MASK |
 965                                     GDK_POINTER_MOTION_HINT_MASK |
 966                                     GDK_BUTTON_RELEASE_MASK),
 967                                    NULL,
 968                                    fleur,
 969                                    GDK_CURRENT_TIME) != 0); /* wait for success */
 970           gdk_cursor_destroy (fleur);
 971
 972           gtk_widget_queue_resize (widget);
 973         }
 974     }
 975
 976   return TRUE;
 977 }
 978
 979 static void
 980 gtk_handle_box_add (GtkContainer *container,
 981                     GtkWidget    *widget)
 982 {
 983   g_return_if_fail (GTK_IS_HANDLE_BOX (container));
 984   g_return_if_fail (GTK_BIN (container)->child == NULL);
 985   g_return_if_fail (widget->parent == NULL);
 986
 987   gtk_widget_set_parent_window (widget, GTK_HANDLE_BOX (container)->bin_window);
 988   GTK_CONTAINER_CLASS (parent_class)->add (container, widget);
 989 }
 990
 991 static void
 992 gtk_handle_box_remove (GtkContainer *container,
 993                        GtkWidget    *widget)
 994 {
 995   GtkHandleBox *hb;
 996
 997   g_return_if_fail (GTK_IS_HANDLE_BOX (container));
 998   g_return_if_fail (GTK_BIN (container)->child == widget);
 999
1000   hb = GTK_HANDLE_BOX (container);
1001
1002   if (hb->child_detached)
1003     {
1004       hb->child_detached = FALSE;
1005       if (GTK_WIDGET_REALIZED (hb))
1006         {
1007           gdk_window_hide (hb->float_window);
1008           gdk_window_reparent (hb->bin_window, GTK_WIDGET (hb)->window, 0, 0);
1009         }
1010       hb->float_window_mapped = FALSE;
1011     }
1012   if (hb->in_drag)
1013     {
1014       gdk_pointer_ungrab (GDK_CURRENT_TIME);
1015       gtk_grab_remove (GTK_WIDGET (container));
1016       hb->in_drag = FALSE;
1017     }
1018
1019   GTK_CONTAINER_CLASS (parent_class)->remove (container, widget);
1020 }
1021
1022 static gint
1023 gtk_handle_box_delete_event (GtkWidget *widget,
1024                              GdkEventAny  *event)
1025 {
1026   GtkHandleBox *hb;
1027
1028   g_return_val_if_fail (widget != NULL, FALSE);
1029   g_return_val_if_fail (GTK_IS_HANDLE_BOX (widget), FALSE);
1030   g_return_val_if_fail (event != NULL, FALSE);
1031
1032   hb = GTK_HANDLE_BOX (widget);
1033   g_return_val_if_fail (event->window == hb->float_window, FALSE);
1034
1035   hb->child_detached = FALSE;
1036   gdk_window_hide (hb->float_window);
1037   gdk_window_reparent (hb->bin_window, widget->window, 0, 0);
1038   hb->float_window_mapped = FALSE;
1039   gtk_signal_emit (GTK_OBJECT (hb),
1040                    handle_box_signals[SIGNAL_CHILD_ATTACHED],
1041                    GTK_BIN (hb)->child);
1042   if (hb->in_drag)
1043     {
1044       gdk_pointer_ungrab (GDK_CURRENT_TIME);
1045       gtk_grab_remove (widget);
1046       hb->in_drag = FALSE;
1047     }
1048
1049   gtk_widget_queue_resize (GTK_WIDGET (hb));
1050
1051   return TRUE;
1052 }
1053