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 Free
  17  * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18  */
  19
  20
  21 #include <stdlib.h>
  22 #include "gdk/gdkx.h"
  23 #include "gtkhandlebox.h"
  24 #include "gtkmain.h"
  25 #include "gtksignal.h"
  26 #include "gtkwindow.h"
  27
  28
  29 #define DRAG_HANDLE_SIZE 10
  30 #define CHILDLESS_SIZE  25
  31 #define GHOST_HEIGHT 3
  32
  33 enum
  34 {
  35   SIGNAL_CHILD_ATTACHED,
  36   SIGNAL_CHILD_DETACHED,
  37   SIGNAL_LAST
  38 };
  39
  40 typedef void    (*SignalChildAttached)          (GtkObject      *object,
  41                                                  GtkWidget      *widget,
  42                                                  gpointer        func_data);
  43
  44 static void gtk_handle_box_class_init     (GtkHandleBoxClass *klass);
  45 static void gtk_handle_box_init           (GtkHandleBox      *handle_box);
  46 static void gtk_handle_box_destroy        (GtkObject         *object);
  47 static void gtk_handle_box_map            (GtkWidget         *widget);
  48 static void gtk_handle_box_unmap          (GtkWidget         *widget);
  49 static void gtk_handle_box_realize        (GtkWidget         *widget);
  50 static void gtk_handle_box_unrealize      (GtkWidget         *widget);
  51 static void gtk_handle_box_size_request   (GtkWidget         *widget,
  52                                            GtkRequisition    *requisition);
  53 static void gtk_handle_box_size_allocate  (GtkWidget         *widget,
  54                                            GtkAllocation     *real_allocation);
  55 static void gtk_handle_box_add            (GtkContainer      *container,
  56                                            GtkWidget         *widget);
  57 static void gtk_handle_box_remove         (GtkContainer      *container,
  58                                            GtkWidget         *widget);
  59 static void gtk_handle_box_draw_ghost     (GtkHandleBox      *hb);
  60 static void gtk_handle_box_paint          (GtkWidget         *widget,
  61                                            GdkEventExpose    *event,
  62                                            GdkRectangle      *area);
  63 static void gtk_handle_box_draw           (GtkWidget         *widget,
  64                                            GdkRectangle      *area);
  65 static gint gtk_handle_box_expose         (GtkWidget         *widget,
  66                                            GdkEventExpose    *event);
  67 static gint gtk_handle_box_button_changed (GtkWidget         *widget,
  68                                            GdkEventButton    *event);
  69 static gint gtk_handle_box_motion         (GtkWidget         *widget,
  70                                            GdkEventMotion    *event);
  71 static gint gtk_handle_box_delete_event   (GtkWidget         *widget,
  72                                            GdkEventAny       *event);
  73
  74
  75 static GtkBinClass *parent_class;
  76 static guint        handle_box_signals[SIGNAL_LAST] = { 0 };
  77
  78
  79 guint
  80 gtk_handle_box_get_type (void)
  81 {
  82   static guint handle_box_type = 0;
  83
  84   if (!handle_box_type)
  85     {
  86       GtkTypeInfo handle_box_info =
  87       {
  88         "GtkHandleBox",
  89         sizeof (GtkHandleBox),
  90         sizeof (GtkHandleBoxClass),
  91         (GtkClassInitFunc) gtk_handle_box_class_init,
  92         (GtkObjectInitFunc) gtk_handle_box_init,
  93         (GtkArgSetFunc) NULL,
  94         (GtkArgGetFunc) 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_marshal_child_attached (GtkObject      *object,
 105                                        GtkSignalFunc  func,
 106                                        gpointer       func_data,
 107                                        GtkArg         *args)
 108 {
 109   SignalChildAttached sfunc = (SignalChildAttached) func;
 110
 111   (* sfunc) (object,
 112              (GtkWidget*) GTK_VALUE_OBJECT (args[0]),
 113              func_data);
 114 }
 115
 116 static void
 117 gtk_handle_box_class_init (GtkHandleBoxClass *class)
 118 {
 119   GtkObjectClass *object_class;
 120   GtkWidgetClass *widget_class;
 121   GtkContainerClass *container_class;
 122
 123   object_class = (GtkObjectClass *) class;
 124   widget_class = (GtkWidgetClass *) class;
 125   container_class = (GtkContainerClass *) class;
 126
 127   parent_class = gtk_type_class (gtk_bin_get_type ());
 128
 129   handle_box_signals[SIGNAL_CHILD_ATTACHED] =
 130     gtk_signal_new ("child_attached",
 131                     GTK_RUN_FIRST,
 132                     object_class->type,
 133                     GTK_SIGNAL_OFFSET (GtkHandleBoxClass, child_attached),
 134                     gtk_handle_box_marshal_child_attached,
 135                     GTK_TYPE_NONE, 1,
 136                     GTK_TYPE_WIDGET);
 137   handle_box_signals[SIGNAL_CHILD_DETACHED] =
 138     gtk_signal_new ("child_detached",
 139                     GTK_RUN_FIRST,
 140                     object_class->type,
 141                     GTK_SIGNAL_OFFSET (GtkHandleBoxClass, child_detached),
 142                     gtk_handle_box_marshal_child_attached,
 143                     GTK_TYPE_NONE, 1,
 144                     GTK_TYPE_WIDGET);
 145   gtk_object_class_add_signals (object_class, handle_box_signals, SIGNAL_LAST);
 146
 147   object_class->destroy = gtk_handle_box_destroy;
 148
 149   widget_class->map = gtk_handle_box_map;
 150   widget_class->unmap = gtk_handle_box_unmap;
 151   widget_class->realize = gtk_handle_box_realize;
 152   widget_class->unrealize = gtk_handle_box_unrealize;
 153   widget_class->size_request = gtk_handle_box_size_request;
 154   widget_class->size_allocate = gtk_handle_box_size_allocate;
 155   widget_class->draw = gtk_handle_box_draw;
 156   widget_class->expose_event = gtk_handle_box_expose;
 157   widget_class->button_press_event = gtk_handle_box_button_changed;
 158   widget_class->button_release_event = gtk_handle_box_button_changed;
 159   widget_class->motion_notify_event = gtk_handle_box_motion;
 160   widget_class->delete_event = gtk_handle_box_delete_event;
 161
 162   container_class->add = gtk_handle_box_add;
 163   container_class->remove = gtk_handle_box_remove;
 164
 165   class->child_attached = NULL;
 166   class->child_detached = NULL;
 167 }
 168
 169 static void
 170 gtk_handle_box_init (GtkHandleBox *handle_box)
 171 {
 172   GTK_WIDGET_UNSET_FLAGS (handle_box, GTK_NO_WINDOW);
 173   GTK_WIDGET_SET_FLAGS (handle_box, GTK_BASIC); /* FIXME: are we really a basic widget? */
 174
 175   handle_box->bin_window = NULL;
 176   handle_box->float_window = NULL;
 177   handle_box->handle_position = GTK_POS_LEFT;
 178   handle_box->float_window_mapped = FALSE;
 179   handle_box->child_detached = FALSE;
 180   handle_box->in_drag = FALSE;
 181   handle_box->shrink_on_detach = TRUE;
 182   handle_box->fleur_cursor = gdk_cursor_new (GDK_FLEUR);
 183   handle_box->dragoff_x = 0;
 184   handle_box->dragoff_y = 0;
 185 }
 186
 187 GtkWidget*
 188 gtk_handle_box_new (void)
 189 {
 190   return GTK_WIDGET (gtk_type_new (gtk_handle_box_get_type ()));
 191 }
 192
 193 static void
 194 gtk_handle_box_destroy (GtkObject *object)
 195 {
 196   GtkHandleBox *hb;
 197
 198   g_return_if_fail (object != NULL);
 199   g_return_if_fail (GTK_IS_HANDLE_BOX (object));
 200
 201   hb = GTK_HANDLE_BOX (object);
 202
 203   if (GTK_OBJECT_CLASS (parent_class)->destroy)
 204     (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
 205 }
 206
 207 static void
 208 gtk_handle_box_map (GtkWidget *widget)
 209 {
 210   GtkBin *bin;
 211   GtkHandleBox *hb;
 212
 213   g_return_if_fail (widget != NULL);
 214   g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
 215
 216   GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
 217
 218   bin = GTK_BIN (widget);
 219   hb = GTK_HANDLE_BOX (widget);
 220
 221   gdk_window_show (hb->bin_window);
 222   gdk_window_show (widget->window);
 223
 224   if (hb->child_detached && !hb->float_window_mapped)
 225     {
 226       gdk_window_show (hb->float_window);
 227       hb->float_window_mapped = TRUE;
 228     }
 229
 230   if (bin->child &&
 231       GTK_WIDGET_VISIBLE (bin->child) &&
 232       !GTK_WIDGET_MAPPED (bin->child))
 233     gtk_widget_map (bin->child);
 234 }
 235
 236 static void
 237 gtk_handle_box_unmap (GtkWidget *widget)
 238 {
 239   GtkHandleBox *hb;
 240
 241   g_return_if_fail (widget != NULL);
 242   g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
 243
 244   GTK_WIDGET_UNSET_FLAGS (widget, GTK_MAPPED);
 245
 246   hb = GTK_HANDLE_BOX (widget);
 247
 248   gdk_window_hide (widget->window);
 249   if (hb->float_window_mapped)
 250     {
 251       gdk_window_hide (hb->float_window);
 252       hb->float_window_mapped = FALSE;
 253     }
 254 }
 255
 256 static void
 257 gtk_handle_box_realize (GtkWidget *widget)
 258 {
 259   GdkWindowAttr attributes;
 260   gint attributes_mask;
 261   GtkHandleBox *hb;
 262
 263   g_return_if_fail (widget != NULL);
 264   g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
 265
 266   hb = GTK_HANDLE_BOX (widget);
 267
 268   GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
 269
 270   attributes.x = widget->allocation.x;
 271   attributes.y = widget->allocation.y;
 272   attributes.width = widget->allocation.width;
 273   attributes.height = widget->allocation.height;
 274   attributes.window_type = GDK_WINDOW_CHILD;
 275   attributes.wclass = GDK_INPUT_OUTPUT;
 276   attributes.visual = gtk_widget_get_visual (widget);
 277   attributes.colormap = gtk_widget_get_colormap (widget);
 278   attributes.event_mask = (gtk_widget_get_events (widget)
 279                            | GDK_EXPOSURE_MASK);
 280   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
 281   widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask);
 282   gdk_window_set_user_data (widget->window, widget);
 283
 284   attributes.x = 0;
 285   attributes.y = 0;
 286   attributes.width = widget->allocation.width;
 287   attributes.height = widget->allocation.height;
 288   attributes.window_type = GDK_WINDOW_CHILD;
 289   attributes.event_mask |= (gtk_widget_get_events (widget) |
 290                             GDK_EXPOSURE_MASK |
 291                             GDK_BUTTON1_MOTION_MASK |
 292                             GDK_POINTER_MOTION_HINT_MASK |
 293                             GDK_BUTTON_PRESS_MASK |
 294                             GDK_BUTTON_RELEASE_MASK);
 295   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
 296   hb->bin_window = gdk_window_new (widget->window, &attributes, attributes_mask);
 297   gdk_window_set_user_data (hb->bin_window, widget);
 298   if (GTK_BIN (hb)->child)
 299     gtk_widget_set_parent_window (GTK_BIN (hb)->child, hb->bin_window);
 300
 301   attributes.x = 0;
 302   attributes.y = 0;
 303   attributes.width = widget->requisition.width;
 304   attributes.height = widget->requisition.height;
 305   attributes.window_type = GDK_WINDOW_TOPLEVEL;
 306   attributes.wclass = GDK_INPUT_OUTPUT;
 307   attributes.visual = gtk_widget_get_visual (widget);
 308   attributes.colormap = gtk_widget_get_colormap (widget);
 309   attributes.event_mask = (gtk_widget_get_events (widget) |
 310                            GDK_KEY_PRESS_MASK |
 311                            GDK_ENTER_NOTIFY_MASK |
 312                            GDK_LEAVE_NOTIFY_MASK |
 313                            GDK_FOCUS_CHANGE_MASK |
 314                            GDK_STRUCTURE_MASK);
 315   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
 316   hb->float_window = gdk_window_new (NULL, &attributes, attributes_mask);
 317   gdk_window_set_user_data (hb->float_window, widget);
 318   gdk_window_set_decorations (hb->float_window, 0);
 319
 320
 321   widget->style = gtk_style_attach (widget->style, widget->window);
 322   gtk_style_set_background (widget->style, widget->window, GTK_WIDGET_STATE (hb));
 323   gtk_style_set_background (widget->style, hb->bin_window, GTK_WIDGET_STATE (hb));
 324   gtk_style_set_background (widget->style, hb->float_window, GTK_WIDGET_STATE (hb));
 325 }
 326
 327 static void
 328 gtk_handle_box_unrealize (GtkWidget *widget)
 329 {
 330   GtkHandleBox *hb;
 331
 332   g_return_if_fail (widget != NULL);
 333   g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
 334
 335   hb = GTK_HANDLE_BOX (widget);
 336
 337   gdk_window_set_user_data (hb->bin_window, NULL);
 338   gdk_window_destroy (hb->bin_window);
 339   hb->bin_window = NULL;
 340   gdk_window_set_user_data (hb->float_window, NULL);
 341   gdk_window_destroy (hb->float_window);
 342   hb->float_window = NULL;
 343
 344   gdk_cursor_destroy (hb->fleur_cursor);
 345   hb->fleur_cursor = NULL;
 346
 347   if (GTK_WIDGET_CLASS (parent_class)->unrealize)
 348     (* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
 349 }
 350
 351 static void
 352 gtk_handle_box_size_request (GtkWidget      *widget,
 353                              GtkRequisition *requisition)
 354 {
 355   GtkBin *bin;
 356   GtkHandleBox *hb;
 357
 358   g_return_if_fail (widget != NULL);
 359   g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
 360   g_return_if_fail (requisition != NULL);
 361
 362   bin = GTK_BIN (widget);
 363   hb = GTK_HANDLE_BOX (widget);
 364
 365   if (hb->handle_position == GTK_POS_LEFT ||
 366       hb->handle_position == GTK_POS_RIGHT)
 367     {
 368       requisition->width = DRAG_HANDLE_SIZE;
 369       requisition->height = 0;
 370     }
 371   else
 372     {
 373       requisition->width = 0;
 374       requisition->height = DRAG_HANDLE_SIZE;
 375     }
 376
 377   /* if our child is not visible, we still request its size, since we
 378    * won't have any usefull hint for our size otherwise.
 379    */
 380   if (bin->child)
 381     gtk_widget_size_request (bin->child, &bin->child->requisition);
 382
 383   if (hb->child_detached)
 384     {
 385       if (!hb->shrink_on_detach)
 386         {
 387           if (hb->handle_position == GTK_POS_LEFT ||
 388               hb->handle_position == GTK_POS_RIGHT)
 389             requisition->height += bin->child->requisition.height;
 390           else
 391             requisition->width += bin->child->requisition.width;
 392         }
 393       else
 394         {
 395           if (hb->handle_position == GTK_POS_LEFT ||
 396               hb->handle_position == GTK_POS_RIGHT)
 397             requisition->height += widget->style->klass->ythickness;
 398           else
 399             requisition->width += widget->style->klass->xthickness;
 400         }
 401     }
 402   else
 403     {
 404       requisition->width += GTK_CONTAINER (widget)->border_width * 2;
 405       requisition->height += GTK_CONTAINER (widget)->border_width * 2;
 406
 407       if (bin->child)
 408         {
 409           requisition->width += bin->child->requisition.width;
 410           requisition->height += bin->child->requisition.height;
 411         }
 412       else
 413         {
 414           requisition->width += CHILDLESS_SIZE;
 415           requisition->height += CHILDLESS_SIZE;
 416         }
 417     }
 418 }
 419
 420 static void
 421 gtk_handle_box_size_allocate (GtkWidget     *widget,
 422                               GtkAllocation *allocation)
 423 {
 424   GtkBin *bin;
 425   GtkHandleBox *hb;
 426
 427   g_return_if_fail (widget != NULL);
 428   g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
 429   g_return_if_fail (allocation != NULL);
 430
 431   bin = GTK_BIN (widget);
 432   hb = GTK_HANDLE_BOX (widget);
 433
 434   widget->allocation.x = allocation->x;
 435
 436   if (hb->child_detached)
 437     {
 438       guint max_req_height;
 439       guint max_req_width;
 440
 441       max_req_height = MAX (widget->requisition.height,
 442                             bin->child->requisition.height +
 443                             2 * widget->style->klass->ythickness);
 444       max_req_width = MAX (widget->requisition.width,
 445                            bin->child->requisition.width +
 446                            2 * widget->style->klass->xthickness);
 447
 448       if (allocation->height > max_req_height)
 449         widget->allocation.y = allocation->y +
 450           (allocation->height - max_req_height) / 2;
 451       else
 452         widget->allocation.y = allocation->y;
 453
 454       widget->allocation.height = MIN (allocation->height, max_req_height);
 455       widget->allocation.width = MIN (allocation->width, max_req_width);
 456     }
 457   else
 458     {
 459       widget->allocation = *allocation;
 460     }
 461
 462   if (GTK_WIDGET_REALIZED (hb))
 463     gdk_window_move_resize (widget->window,
 464                             widget->allocation.x,
 465                             widget->allocation.y,
 466                             widget->allocation.width,
 467                             widget->allocation.height);
 468
 469
 470   if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
 471     {
 472       GtkWidget *child;
 473       GtkAllocation child_allocation;
 474       guint border_width;
 475
 476       child = bin->child;
 477       border_width = GTK_CONTAINER (widget)->border_width;
 478
 479       child_allocation.x = border_width;
 480       child_allocation.y = border_width;
 481       if (hb->handle_position == GTK_POS_LEFT)
 482         child_allocation.x += DRAG_HANDLE_SIZE;
 483       else if (hb->handle_position == GTK_POS_TOP)
 484         child_allocation.y += DRAG_HANDLE_SIZE;
 485
 486       if (hb->child_detached)
 487         {
 488           guint float_width;
 489           guint float_height;
 490
 491           child_allocation.width = child->requisition.width;
 492           child_allocation.height = child->requisition.height;
 493
 494           float_width = child_allocation.width + 2 * border_width;
 495           float_height = child_allocation.height + 2 * border_width;
 496
 497           if (hb->handle_position == GTK_POS_LEFT ||
 498               hb->handle_position == GTK_POS_RIGHT)
 499             float_width += DRAG_HANDLE_SIZE;
 500           else
 501             float_height += DRAG_HANDLE_SIZE;
 502
 503           if (GTK_WIDGET_REALIZED (hb))
 504             {
 505               gdk_window_resize (hb->float_window,
 506                                  float_width,
 507                                  float_height);
 508               gdk_window_move_resize (hb->bin_window,
 509                                       0,
 510                                       0,
 511                                       float_width,
 512                                       float_height);
 513             }
 514         }
 515       else
 516         {
 517           child_allocation.width = widget->allocation.width - 2 * border_width;
 518           child_allocation.height = widget->allocation.height - 2 * border_width;
 519
 520           if (hb->handle_position == GTK_POS_LEFT ||
 521               hb->handle_position == GTK_POS_RIGHT)
 522             child_allocation.width -= DRAG_HANDLE_SIZE;
 523           else
 524             child_allocation.height -= DRAG_HANDLE_SIZE;
 525
 526           if (GTK_WIDGET_REALIZED (hb))
 527             gdk_window_move_resize (hb->bin_window,
 528                                     0,
 529                                     0,
 530                                     widget->allocation.width,
 531                                     widget->allocation.height);
 532         }
 533
 534       gtk_widget_size_allocate (bin->child, &child_allocation);
 535     }
 536 }
 537
 538 static void
 539 gtk_handle_box_draw_ghost (GtkHandleBox *hb)
 540 {
 541   GtkWidget *widget;
 542   guint x;
 543   guint y;
 544   guint width;
 545   guint height;
 546
 547   widget = GTK_WIDGET (hb);
 548
 549   if (hb->handle_position == GTK_POS_LEFT ||
 550       hb->handle_position == GTK_POS_RIGHT)
 551     {
 552       x = hb->handle_position == GTK_POS_LEFT ? 0 : widget->allocation.width;
 553       y = 0;
 554       width = DRAG_HANDLE_SIZE;
 555       height = widget->allocation.height;
 556     }
 557   else
 558     {
 559       x = 0;
 560       y = hb->handle_position == GTK_POS_TOP ? 0 : widget->allocation.height;
 561       width = widget->allocation.width;
 562       height = DRAG_HANDLE_SIZE;
 563     }
 564   gtk_draw_shadow (widget->style,
 565                    widget->window,
 566                    GTK_WIDGET_STATE (widget),
 567                    GTK_SHADOW_ETCHED_IN,
 568                    x,
 569                    y,
 570                    width,
 571                    height);
 572   /*
 573   if (hb->handle_position == GTK_POS_LEFT ||
 574       hb->handle_position == GTK_POS_RIGHT)
 575     gtk_draw_hline (widget->style,
 576                     widget->window,
 577                     GTK_WIDGET_STATE (widget),
 578                     hb->handle_position == GTK_POS_LEFT ? DRAG_HANDLE_SIZE : widget->allocation.width - DRAG_HANDLE_SIZE,
 579                     widget->allocation.width - DRAG_HANDLE_SIZE,
 580                     widget->allocation.height / 2);
 581   else
 582     gtk_draw_vline (widget->style,
 583                     widget->window,
 584                     GTK_WIDGET_STATE (widget),
 585                     hb->handle_position == GTK_POS_TOP ? DRAG_HANDLE_SIZE : widget->allocation.height - DRAG_HANDLE_SIZE,
 586                     widget->allocation.height - DRAG_HANDLE_SIZE,
 587                     widget->allocation.width / 2);
 588                     */
 589 }
 590
 591 static void
 592 gtk_handle_box_paint (GtkWidget      *widget,
 593                       GdkEventExpose *event,
 594                       GdkRectangle   *area)
 595 {
 596   GtkBin *bin;
 597   GtkHandleBox *hb;
 598   guint width;
 599   guint height;
 600   guint border_width;
 601
 602   bin = GTK_BIN (widget);
 603   hb = GTK_HANDLE_BOX (widget);
 604
 605   border_width = GTK_CONTAINER (hb)->border_width;
 606
 607   if (hb->child_detached)
 608     {
 609       width = bin->child->allocation.width + 2 * border_width;
 610       height = bin->child->allocation.height + 2 * border_width;
 611     }
 612   else if (hb->handle_position == GTK_POS_LEFT ||
 613            hb->handle_position == GTK_POS_RIGHT)
 614     {
 615       width = widget->allocation.width - DRAG_HANDLE_SIZE;
 616       height = widget->allocation.height;
 617     }
 618   else
 619     {
 620       width = widget->allocation.width;
 621       height = widget->allocation.height - DRAG_HANDLE_SIZE;
 622     }
 623
 624   gdk_window_clear (hb->bin_window);
 625   gtk_draw_shadow (widget->style,
 626                    hb->bin_window,
 627                    GTK_WIDGET_STATE (widget),
 628                    GTK_SHADOW_OUT,
 629                    hb->handle_position == GTK_POS_LEFT ? DRAG_HANDLE_SIZE : 0,
 630                    hb->handle_position == GTK_POS_TOP ? DRAG_HANDLE_SIZE : 0,
 631                    width,
 632                    height);
 633
 634   if (hb->handle_position == GTK_POS_LEFT ||
 635       hb->handle_position == GTK_POS_RIGHT)
 636     {
 637       guint x;
 638
 639       for (x = 1; x < DRAG_HANDLE_SIZE; x += 3)
 640
 641         gtk_draw_vline (widget->style,
 642                         hb->bin_window,
 643                         GTK_WIDGET_STATE (widget),
 644                         widget->style->klass->ythickness,
 645                         height + DRAG_HANDLE_SIZE - widget->style->klass->ythickness,
 646                         hb->handle_position == GTK_POS_LEFT ? x : width + x);
 647       gtk_draw_hline (widget->style,
 648                       hb->bin_window,
 649                       GTK_WIDGET_STATE (widget),
 650                       hb->handle_position == GTK_POS_LEFT ? DRAG_HANDLE_SIZE : width,
 651                       hb->handle_position == GTK_POS_LEFT ? 0 : width + DRAG_HANDLE_SIZE,
 652                       0);
 653       gtk_draw_hline (widget->style,
 654                       hb->bin_window,
 655                       GTK_WIDGET_STATE (widget),
 656                       hb->handle_position == GTK_POS_LEFT ? DRAG_HANDLE_SIZE : width,
 657                       hb->handle_position == GTK_POS_LEFT ? 0 : width + DRAG_HANDLE_SIZE,
 658                       height - widget->style->klass->ythickness);
 659     }
 660   else
 661     {
 662       guint y;
 663
 664       for (y = 1; y < DRAG_HANDLE_SIZE; y += 3)
 665
 666         gtk_draw_hline (widget->style,
 667                         hb->bin_window,
 668                         GTK_WIDGET_STATE (widget),
 669                         widget->style->klass->xthickness,
 670                         width + DRAG_HANDLE_SIZE - widget->style->klass->xthickness,
 671                         hb->handle_position == GTK_POS_TOP ? y : height + y);
 672       gtk_draw_vline (widget->style,
 673                       hb->bin_window,
 674                       GTK_WIDGET_STATE (widget),
 675                       hb->handle_position == GTK_POS_TOP ? DRAG_HANDLE_SIZE : height,
 676                       hb->handle_position == GTK_POS_TOP ? 0 : height + DRAG_HANDLE_SIZE,
 677                       0);
 678       gtk_draw_vline (widget->style,
 679                       hb->bin_window,
 680                       GTK_WIDGET_STATE (widget),
 681                       hb->handle_position == GTK_POS_TOP ? DRAG_HANDLE_SIZE : height,
 682                       hb->handle_position == GTK_POS_TOP ? 0 : height + DRAG_HANDLE_SIZE,
 683                       width - widget->style->klass->xthickness);
 684     }
 685
 686
 687   if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
 688     {
 689       GdkRectangle child_area;
 690       GdkEventExpose child_event;
 691
 692       if (!event) /* we were called from draw() */
 693         {
 694           if (gtk_widget_intersect (bin->child, area, &child_area))
 695             gtk_widget_draw (bin->child, &child_area);
 696         }
 697       else /* we were called from expose() */
 698         {
 699           child_event = *event;
 700
 701           if (GTK_WIDGET_NO_WINDOW (bin->child) &&
 702               gtk_widget_intersect (bin->child, &event->area, &child_event.area))
 703             gtk_widget_event (bin->child, (GdkEvent *) &child_event);
 704         }
 705     }
 706 }
 707
 708 static void
 709 gtk_handle_box_draw (GtkWidget    *widget,
 710                      GdkRectangle *area)
 711 {
 712   GtkHandleBox *hb;
 713
 714   g_return_if_fail (widget != NULL);
 715   g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
 716   g_return_if_fail (area != NULL);
 717
 718   hb = GTK_HANDLE_BOX (widget);
 719
 720   if (GTK_WIDGET_DRAWABLE (widget))
 721     {
 722       if (hb->child_detached)
 723         {
 724           /* The area parameter does not make sense in this case, so we
 725            * repaint everything.
 726            */
 727
 728           gtk_handle_box_draw_ghost (hb);
 729
 730           area->x = 0;
 731           area->y = 0;
 732           area->width = 2 * GTK_CONTAINER (hb)->border_width + DRAG_HANDLE_SIZE;
 733           area->height = area->width + GTK_BIN (hb)->child->allocation.height;
 734           area->width += GTK_BIN (hb)->child->allocation.width;
 735
 736           gtk_handle_box_paint (widget, NULL, area);
 737         }
 738       else
 739         gtk_handle_box_paint (widget, NULL, area);
 740     }
 741 }
 742
 743 static gint
 744 gtk_handle_box_expose (GtkWidget      *widget,
 745                        GdkEventExpose *event)
 746 {
 747   GtkHandleBox *hb;
 748
 749   g_return_val_if_fail (widget != NULL, FALSE);
 750   g_return_val_if_fail (GTK_IS_HANDLE_BOX (widget), FALSE);
 751   g_return_val_if_fail (event != NULL, FALSE);
 752
 753   if (GTK_WIDGET_DRAWABLE (widget))
 754     {
 755       hb = GTK_HANDLE_BOX (widget);
 756
 757       if (event->window == widget->window)
 758         {
 759           if (hb->child_detached)
 760             gtk_handle_box_draw_ghost (hb);
 761         }
 762       else
 763         gtk_handle_box_paint (widget, event, NULL);
 764     }
 765
 766   return FALSE;
 767 }
 768
 769 static gint
 770 gtk_handle_box_button_changed (GtkWidget      *widget,
 771                                GdkEventButton *event)
 772 {
 773   GtkHandleBox *hb;
 774   gboolean event_handled;
 775
 776   g_return_val_if_fail (widget != NULL, FALSE);
 777   g_return_val_if_fail (GTK_IS_HANDLE_BOX (widget), FALSE);
 778   g_return_val_if_fail (event != NULL, FALSE);
 779
 780   hb = GTK_HANDLE_BOX (widget);
 781
 782   event_handled = FALSE;
 783   if (event->button == 1 &&
 784       event->type == GDK_BUTTON_PRESS)
 785     {
 786       GtkWidget *child;
 787       gboolean in_handle;
 788
 789       child = GTK_BIN (hb)->child;
 790
 791       switch (hb->handle_position)
 792         {
 793         case GTK_POS_LEFT:
 794           in_handle = event->x < DRAG_HANDLE_SIZE;
 795           break;
 796         case GTK_POS_TOP:
 797           in_handle = event->y < DRAG_HANDLE_SIZE;
 798           break;
 799         case GTK_POS_RIGHT:
 800           in_handle = event->x > 2 * GTK_CONTAINER (hb)->border_width + child->allocation.width;
 801           break;
 802         case GTK_POS_BOTTOM:
 803           in_handle = event->y > 2 * GTK_CONTAINER (hb)->border_width + child->allocation.height;
 804           break;
 805         default:
 806           in_handle = FALSE;
 807           break;
 808         }
 809
 810       if (!child)
 811         {
 812           in_handle = FALSE;
 813           event_handled = TRUE;
 814         }
 815
 816       if (in_handle)
 817         {
 818           hb->dragoff_x = event->x;
 819           hb->dragoff_y = event->y;
 820
 821           gtk_grab_add (widget);
 822           hb->in_drag = TRUE;
 823           while (gdk_pointer_grab (hb->bin_window,
 824                                    FALSE,
 825                                    (GDK_BUTTON1_MOTION_MASK |
 826                                     GDK_POINTER_MOTION_HINT_MASK |
 827                                     GDK_BUTTON_RELEASE_MASK),
 828                                    NULL,
 829                                    hb->fleur_cursor,
 830                                    GDK_CURRENT_TIME) != 0); /* wait for success */
 831           event_handled = TRUE;
 832         }
 833     }
 834   else if (event->type == GDK_BUTTON_RELEASE &&
 835            hb->in_drag)
 836     {
 837       gdk_pointer_ungrab (GDK_CURRENT_TIME);
 838       gtk_grab_remove (widget);
 839       hb->in_drag = FALSE;
 840       event_handled = TRUE;
 841     }
 842
 843   return event_handled;
 844 }
 845
 846 static gint
 847 gtk_handle_box_motion (GtkWidget      *widget,
 848                        GdkEventMotion *event)
 849 {
 850   GtkHandleBox *hb;
 851   gint new_x, new_y;
 852   gint ox, oy;
 853   gint snap_x, snap_y;
 854   gboolean in_handle;
 855
 856   g_return_val_if_fail (widget != NULL, FALSE);
 857   g_return_val_if_fail (GTK_IS_HANDLE_BOX (widget), FALSE);
 858   g_return_val_if_fail (event != NULL, FALSE);
 859
 860   hb = GTK_HANDLE_BOX (widget);
 861   if (!hb->in_drag)
 862     return FALSE;
 863
 864   ox = 0;
 865   oy = 0;
 866   gdk_window_get_origin (hb->float_window, &ox, &oy);
 867   new_x = 0;
 868   new_y = 0;
 869   gdk_window_get_pointer (hb->float_window, &new_x, &new_y, NULL);
 870   new_x += ox;
 871   new_y += oy;
 872   new_x -= hb->dragoff_x;
 873   new_y -= hb->dragoff_y;
 874   snap_x = 0;
 875   snap_y = 0;
 876   gdk_window_get_pointer (widget->window, &snap_x, &snap_y, NULL);
 877
 878   switch (hb->handle_position)
 879     {
 880     case GTK_POS_LEFT:
 881       in_handle = (snap_x >= 0 && snap_x <= DRAG_HANDLE_SIZE &&
 882                    snap_y >= 0 && snap_y <= widget->allocation.height);
 883       break;
 884     case GTK_POS_TOP:
 885       in_handle = (snap_x >= 0 && snap_x <= widget->allocation.width &&
 886                    snap_y >= 0 && snap_y <= DRAG_HANDLE_SIZE);
 887       break;
 888     case GTK_POS_RIGHT:
 889       in_handle = (snap_x >= widget->allocation.width - DRAG_HANDLE_SIZE && snap_x <= widget->allocation.width &&
 890                    snap_y >= 0 && snap_y <= widget->allocation.height);
 891       break;
 892     case GTK_POS_BOTTOM:
 893       in_handle = (snap_x >= 0 && snap_x <= widget->allocation.width &&
 894                    snap_y >= widget->allocation.height - DRAG_HANDLE_SIZE && snap_y <= widget->allocation.height);
 895       break;
 896     default:
 897       in_handle = FALSE;
 898       break;
 899     }
 900
 901   if (in_handle)
 902     {
 903       if (hb->child_detached)
 904         {
 905           gdk_pointer_ungrab (GDK_CURRENT_TIME);
 906
 907           hb->child_detached = FALSE;
 908           gdk_window_hide (hb->float_window);
 909           gdk_window_reparent (hb->bin_window, widget->window, 0, 0);
 910           hb->float_window_mapped = FALSE;
 911           gtk_signal_emit (GTK_OBJECT (hb),
 912                            handle_box_signals[SIGNAL_CHILD_ATTACHED],
 913                            GTK_BIN (hb)->child);
 914
 915           while (gdk_pointer_grab (hb->bin_window,
 916                                    FALSE,
 917                                    (GDK_BUTTON1_MOTION_MASK |
 918                                     GDK_POINTER_MOTION_HINT_MASK |
 919                                     GDK_BUTTON_RELEASE_MASK),
 920                                    NULL,
 921                                    hb->fleur_cursor,
 922                                    GDK_CURRENT_TIME) != 0); /* wait for success */
 923
 924           gtk_widget_queue_resize (widget);
 925         }
 926     }
 927   else
 928     {
 929       if (hb->child_detached)
 930         {
 931           gdk_window_move (hb->float_window, new_x, new_y);
 932           gdk_window_raise (hb->float_window);
 933         }
 934       else
 935         {
 936           gint width;
 937           gint height;
 938
 939           gdk_pointer_ungrab (GDK_CURRENT_TIME);
 940
 941           hb->child_detached = TRUE;
 942           width = 0;
 943           height = 0;
 944           gdk_window_get_size (hb->bin_window, &width, &height);
 945           gdk_window_move_resize (hb->float_window, new_x, new_y, width, height);
 946           gdk_window_reparent (hb->bin_window, hb->float_window, 0, 0);
 947           gdk_window_set_hints (hb->float_window, new_x, new_y, 0, 0, 0, 0, GDK_HINT_POS);
 948           gdk_window_show (hb->float_window);
 949           hb->float_window_mapped = TRUE;
 950 #if     0
 951           /* this extra move is neccessary if we use decorations, or our
 952            * window manager insists on decorations.
 953            */
 954           gdk_flush ();
 955           gdk_window_move (hb->float_window, new_x, new_y);
 956           gdk_flush ();
 957 #endif  /* 0 */
 958           gtk_signal_emit (GTK_OBJECT (hb),
 959                            handle_box_signals[SIGNAL_CHILD_DETACHED],
 960                            GTK_BIN (hb)->child);
 961           gtk_handle_box_draw_ghost (hb);
 962
 963           while (gdk_pointer_grab (hb->bin_window,
 964                                    FALSE,
 965                                    (GDK_BUTTON1_MOTION_MASK |
 966                                     GDK_POINTER_MOTION_HINT_MASK |
 967                                     GDK_BUTTON_RELEASE_MASK),
 968                                    NULL,
 969                                    hb->fleur_cursor,
 970                                    GDK_CURRENT_TIME) != 0); /* wait for success */
 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 }