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->fleur_cursor = gdk_cursor_new (GDK_FLEUR);
 182   handle_box->dragoff_x = 0;
 183   handle_box->dragoff_y = 0;
 184 }
 185
 186 GtkWidget*
 187 gtk_handle_box_new (void)
 188 {
 189   return GTK_WIDGET (gtk_type_new (gtk_handle_box_get_type ()));
 190 }
 191
 192 static void
 193 gtk_handle_box_destroy (GtkObject *object)
 194 {
 195   GtkHandleBox *hb;
 196
 197   g_return_if_fail (object != NULL);
 198   g_return_if_fail (GTK_IS_HANDLE_BOX (object));
 199
 200   hb = GTK_HANDLE_BOX (object);
 201
 202   if (GTK_OBJECT_CLASS (parent_class)->destroy)
 203     (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
 204 }
 205
 206 static void
 207 gtk_handle_box_map (GtkWidget *widget)
 208 {
 209   GtkBin *bin;
 210   GtkHandleBox *hb;
 211
 212   g_return_if_fail (widget != NULL);
 213   g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
 214
 215   GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
 216
 217   bin = GTK_BIN (widget);
 218   hb = GTK_HANDLE_BOX (widget);
 219
 220   gdk_window_show (hb->bin_window);
 221   gdk_window_show (widget->window);
 222
 223   if (hb->child_detached && !hb->float_window_mapped)
 224     {
 225       gdk_window_show (hb->float_window);
 226       hb->float_window_mapped = TRUE;
 227     }
 228
 229   if (bin->child &&
 230       GTK_WIDGET_VISIBLE (bin->child) &&
 231       !GTK_WIDGET_MAPPED (bin->child))
 232     gtk_widget_map (bin->child);
 233 }
 234
 235 static void
 236 gtk_handle_box_unmap (GtkWidget *widget)
 237 {
 238   GtkHandleBox *hb;
 239
 240   g_return_if_fail (widget != NULL);
 241   g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
 242
 243   GTK_WIDGET_UNSET_FLAGS (widget, GTK_MAPPED);
 244
 245   hb = GTK_HANDLE_BOX (widget);
 246
 247   gdk_window_hide (widget->window);
 248   if (hb->float_window_mapped)
 249     {
 250       gdk_window_hide (hb->float_window);
 251       hb->float_window_mapped = FALSE;
 252     }
 253 }
 254
 255 static void
 256 gtk_handle_box_realize (GtkWidget *widget)
 257 {
 258   GdkWindowAttr attributes;
 259   gint attributes_mask;
 260   GtkHandleBox *hb;
 261
 262   g_return_if_fail (widget != NULL);
 263   g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
 264
 265   hb = GTK_HANDLE_BOX (widget);
 266
 267   GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
 268
 269   attributes.x = widget->allocation.x;
 270   attributes.y = widget->allocation.y;
 271   attributes.width = widget->allocation.width;
 272   attributes.height = widget->allocation.height;
 273   attributes.window_type = GDK_WINDOW_CHILD;
 274   attributes.wclass = GDK_INPUT_OUTPUT;
 275   attributes.visual = gtk_widget_get_visual (widget);
 276   attributes.colormap = gtk_widget_get_colormap (widget);
 277   attributes.event_mask = (gtk_widget_get_events (widget)
 278                            | GDK_EXPOSURE_MASK);
 279   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
 280   widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask);
 281   gdk_window_set_user_data (widget->window, widget);
 282
 283   attributes.x = 0;
 284   attributes.y = 0;
 285   attributes.width = widget->allocation.width;
 286   attributes.height = widget->allocation.height;
 287   attributes.window_type = GDK_WINDOW_CHILD;
 288   attributes.event_mask |= (gtk_widget_get_events (widget) |
 289                             GDK_EXPOSURE_MASK |
 290                             GDK_BUTTON1_MOTION_MASK |
 291                             GDK_POINTER_MOTION_HINT_MASK |
 292                             GDK_BUTTON_PRESS_MASK |
 293                             GDK_BUTTON_RELEASE_MASK);
 294   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
 295   hb->bin_window = gdk_window_new (widget->window, &attributes, attributes_mask);
 296   gdk_window_set_user_data (hb->bin_window, widget);
 297   if (GTK_BIN (hb)->child)
 298     gtk_widget_set_parent_window (GTK_BIN (hb)->child, hb->bin_window);
 299
 300   attributes.x = 0;
 301   attributes.y = 0;
 302   attributes.width = widget->requisition.width;
 303   attributes.height = widget->requisition.height;
 304   attributes.window_type = GDK_WINDOW_TOPLEVEL;
 305   attributes.wclass = GDK_INPUT_OUTPUT;
 306   attributes.visual = gtk_widget_get_visual (widget);
 307   attributes.colormap = gtk_widget_get_colormap (widget);
 308   attributes.event_mask = (gtk_widget_get_events (widget) |
 309                            GDK_KEY_PRESS_MASK |
 310                            GDK_ENTER_NOTIFY_MASK |
 311                            GDK_LEAVE_NOTIFY_MASK |
 312                            GDK_FOCUS_CHANGE_MASK |
 313                            GDK_STRUCTURE_MASK);
 314   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
 315   hb->float_window = gdk_window_new (NULL, &attributes, attributes_mask);
 316   gdk_window_set_user_data (hb->float_window, widget);
 317   gdk_window_set_decorations (hb->float_window, 0);
 318
 319
 320   widget->style = gtk_style_attach (widget->style, widget->window);
 321   gtk_style_set_background (widget->style, widget->window, GTK_WIDGET_STATE (hb));
 322   gtk_style_set_background (widget->style, hb->bin_window, GTK_WIDGET_STATE (hb));
 323   gtk_style_set_background (widget->style, hb->float_window, GTK_WIDGET_STATE (hb));
 324 }
 325
 326 static void
 327 gtk_handle_box_unrealize (GtkWidget *widget)
 328 {
 329   GtkHandleBox *hb;
 330
 331   g_return_if_fail (widget != NULL);
 332   g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
 333
 334   hb = GTK_HANDLE_BOX (widget);
 335
 336   gdk_window_set_user_data (hb->bin_window, NULL);
 337   gdk_window_destroy (hb->bin_window);
 338   hb->bin_window = NULL;
 339   gdk_window_set_user_data (hb->float_window, NULL);
 340   gdk_window_destroy (hb->float_window);
 341   hb->float_window = NULL;
 342
 343   gdk_cursor_destroy (hb->fleur_cursor);
 344   hb->fleur_cursor = NULL;
 345
 346   if (GTK_WIDGET_CLASS (parent_class)->unrealize)
 347     (* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
 348 }
 349
 350 static void
 351 gtk_handle_box_size_request (GtkWidget      *widget,
 352                              GtkRequisition *requisition)
 353 {
 354   GtkBin *bin;
 355   GtkHandleBox *hb;
 356
 357   g_return_if_fail (widget != NULL);
 358   g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
 359   g_return_if_fail (requisition != NULL);
 360
 361   bin = GTK_BIN (widget);
 362   hb = GTK_HANDLE_BOX (widget);
 363
 364   if (hb->handle_position == GTK_POS_LEFT ||
 365       hb->handle_position == GTK_POS_RIGHT)
 366     {
 367       requisition->width = DRAG_HANDLE_SIZE;
 368       requisition->height = 0;
 369     }
 370   else
 371     {
 372       requisition->width = 0;
 373       requisition->height = DRAG_HANDLE_SIZE;
 374     }
 375   requisition->width += GTK_CONTAINER (widget)->border_width * 2;
 376   requisition->height += GTK_CONTAINER (widget)->border_width * 2;
 377
 378   /* if our child is not visible, we still request its size, since we
 379    * won't have any usefull hint for our size otherwise.
 380    */
 381   if (bin->child)
 382     gtk_widget_size_request (bin->child, &bin->child->requisition);
 383
 384   if (hb->child_detached)
 385     {
 386       if (hb->handle_position == GTK_POS_LEFT ||
 387           hb->handle_position == GTK_POS_RIGHT)
 388         requisition->height += bin->child->requisition.height;
 389       else
 390         requisition->width += bin->child->requisition.width;
 391     }
 392   else if (bin->child)
 393     {
 394       requisition->width += bin->child->requisition.width;
 395       requisition->height += bin->child->requisition.height;
 396     }
 397   else
 398     {
 399       requisition->width += CHILDLESS_SIZE;
 400       requisition->height += CHILDLESS_SIZE;
 401     }
 402 }
 403
 404 static void
 405 gtk_handle_box_size_allocate (GtkWidget     *widget,
 406                               GtkAllocation *allocation)
 407 {
 408   GtkBin *bin;
 409   GtkHandleBox *hb;
 410
 411   g_return_if_fail (widget != NULL);
 412   g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
 413   g_return_if_fail (allocation != NULL);
 414
 415   bin = GTK_BIN (widget);
 416   hb = GTK_HANDLE_BOX (widget);
 417
 418   widget->allocation.x = allocation->x;
 419   if (allocation->height > widget->requisition.height)
 420     widget->allocation.y = allocation->y + (allocation->height - widget->requisition.height) / 2;
 421   else
 422     widget->allocation.y = allocation->y;
 423   widget->allocation.height = MIN (allocation->height, widget->requisition.height);
 424   widget->allocation.width = MIN (allocation->width, widget->requisition.width);
 425
 426   if (GTK_WIDGET_REALIZED (hb))
 427     gdk_window_move_resize (widget->window,
 428                             widget->allocation.x,
 429                             widget->allocation.y,
 430                             widget->allocation.width,
 431                             widget->allocation.height);
 432
 433
 434   if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
 435     {
 436       GtkWidget *child;
 437       GtkAllocation child_allocation;
 438       guint border_width;
 439
 440       child = bin->child;
 441       border_width = GTK_CONTAINER (widget)->border_width;
 442
 443       child_allocation.x = border_width;
 444       child_allocation.y = border_width;
 445       if (hb->handle_position == GTK_POS_LEFT)
 446         child_allocation.x += DRAG_HANDLE_SIZE;
 447       else if (hb->handle_position == GTK_POS_TOP)
 448         child_allocation.y += DRAG_HANDLE_SIZE;
 449
 450       if (hb->child_detached)
 451         {
 452           guint float_width;
 453           guint float_height;
 454
 455           child_allocation.width = child->requisition.width;
 456           child_allocation.height = child->requisition.height;
 457
 458           float_width = child_allocation.width + 2 * border_width;
 459           float_height = child_allocation.height + 2 * border_width;
 460
 461           if (hb->handle_position == GTK_POS_LEFT ||
 462               hb->handle_position == GTK_POS_RIGHT)
 463             float_width += DRAG_HANDLE_SIZE;
 464           else
 465             float_height += DRAG_HANDLE_SIZE;
 466
 467           if (GTK_WIDGET_REALIZED (hb))
 468             {
 469               gdk_window_resize (hb->float_window,
 470                                  float_width,
 471                                  float_height);
 472               gdk_window_move_resize (hb->bin_window,
 473                                       0,
 474                                       0,
 475                                       float_width,
 476                                       float_height);
 477             }
 478         }
 479       else
 480         {
 481           child_allocation.width = widget->allocation.width - 2 * border_width;
 482           child_allocation.height = widget->allocation.height - 2 * border_width;
 483
 484           if (hb->handle_position == GTK_POS_LEFT ||
 485               hb->handle_position == GTK_POS_RIGHT)
 486             child_allocation.width -= DRAG_HANDLE_SIZE;
 487           else
 488             child_allocation.height -= DRAG_HANDLE_SIZE;
 489
 490           if (GTK_WIDGET_REALIZED (hb))
 491             gdk_window_move_resize (hb->bin_window,
 492                                     0,
 493                                     0,
 494                                     widget->allocation.width,
 495                                     widget->allocation.height);
 496         }
 497
 498       gtk_widget_size_allocate (bin->child, &child_allocation);
 499     }
 500 }
 501
 502 static void
 503 gtk_handle_box_draw_ghost (GtkHandleBox *hb)
 504 {
 505   GtkWidget *widget;
 506   guint x;
 507   guint y;
 508   guint width;
 509   guint height;
 510
 511   widget = GTK_WIDGET (hb);
 512
 513   if (hb->handle_position == GTK_POS_LEFT ||
 514       hb->handle_position == GTK_POS_RIGHT)
 515     {
 516       x = hb->handle_position == GTK_POS_LEFT ? 0 : widget->allocation.width;
 517       y = 0;
 518       width = DRAG_HANDLE_SIZE;
 519       height = widget->allocation.height;
 520     }
 521   else
 522     {
 523       x = 0;
 524       y = hb->handle_position == GTK_POS_TOP ? 0 : widget->allocation.height;
 525       width = widget->allocation.width;
 526       height = DRAG_HANDLE_SIZE;
 527     }
 528   gtk_draw_shadow (widget->style,
 529                    widget->window,
 530                    GTK_WIDGET_STATE (widget),
 531                    GTK_SHADOW_ETCHED_IN,
 532                    x,
 533                    y,
 534                    width,
 535                    height);
 536   /*
 537   if (hb->handle_position == GTK_POS_LEFT ||
 538       hb->handle_position == GTK_POS_RIGHT)
 539     gtk_draw_hline (widget->style,
 540                     widget->window,
 541                     GTK_WIDGET_STATE (widget),
 542                     hb->handle_position == GTK_POS_LEFT ? DRAG_HANDLE_SIZE : widget->allocation.width - DRAG_HANDLE_SIZE,
 543                     widget->allocation.width - DRAG_HANDLE_SIZE,
 544                     widget->allocation.height / 2);
 545   else
 546     gtk_draw_vline (widget->style,
 547                     widget->window,
 548                     GTK_WIDGET_STATE (widget),
 549                     hb->handle_position == GTK_POS_TOP ? DRAG_HANDLE_SIZE : widget->allocation.height - DRAG_HANDLE_SIZE,
 550                     widget->allocation.height - DRAG_HANDLE_SIZE,
 551                     widget->allocation.width / 2);
 552                     */
 553 }
 554
 555 static void
 556 gtk_handle_box_paint (GtkWidget      *widget,
 557                       GdkEventExpose *event,
 558                       GdkRectangle   *area)
 559 {
 560   GtkBin *bin;
 561   GtkHandleBox *hb;
 562   guint width;
 563   guint height;
 564   guint border_width;
 565
 566   bin = GTK_BIN (widget);
 567   hb = GTK_HANDLE_BOX (widget);
 568
 569   border_width = GTK_CONTAINER (hb)->border_width;
 570
 571   if (hb->child_detached)
 572     {
 573       width = bin->child->allocation.width + 2 * border_width;
 574       height = bin->child->allocation.height + 2 * border_width;
 575     }
 576   else if (hb->handle_position == GTK_POS_LEFT ||
 577            hb->handle_position == GTK_POS_RIGHT)
 578     {
 579       width = widget->allocation.width - DRAG_HANDLE_SIZE;
 580       height = widget->allocation.height;
 581     }
 582   else
 583     {
 584       width = widget->allocation.width;
 585       height = widget->allocation.height - DRAG_HANDLE_SIZE;
 586     }
 587
 588   gdk_window_clear (hb->bin_window);
 589   gtk_draw_shadow (widget->style,
 590                    hb->bin_window,
 591                    GTK_WIDGET_STATE (widget),
 592                    GTK_SHADOW_OUT,
 593                    hb->handle_position == GTK_POS_LEFT ? DRAG_HANDLE_SIZE : 0,
 594                    hb->handle_position == GTK_POS_TOP ? DRAG_HANDLE_SIZE : 0,
 595                    width,
 596                    height);
 597
 598   if (hb->handle_position == GTK_POS_LEFT ||
 599       hb->handle_position == GTK_POS_RIGHT)
 600     {
 601       guint x;
 602
 603       for (x = 1; x < DRAG_HANDLE_SIZE; x += 3)
 604
 605         gtk_draw_vline (widget->style,
 606                         hb->bin_window,
 607                         GTK_WIDGET_STATE (widget),
 608                         widget->style->klass->ythickness,
 609                         height + DRAG_HANDLE_SIZE - widget->style->klass->ythickness,
 610                         hb->handle_position == GTK_POS_LEFT ? x : width + x);
 611       gtk_draw_hline (widget->style,
 612                       hb->bin_window,
 613                       GTK_WIDGET_STATE (widget),
 614                       hb->handle_position == GTK_POS_LEFT ? DRAG_HANDLE_SIZE : width,
 615                       hb->handle_position == GTK_POS_LEFT ? 0 : width + DRAG_HANDLE_SIZE,
 616                       0);
 617       gtk_draw_hline (widget->style,
 618                       hb->bin_window,
 619                       GTK_WIDGET_STATE (widget),
 620                       hb->handle_position == GTK_POS_LEFT ? DRAG_HANDLE_SIZE : width,
 621                       hb->handle_position == GTK_POS_LEFT ? 0 : width + DRAG_HANDLE_SIZE,
 622                       height - widget->style->klass->ythickness);
 623     }
 624   else
 625     {
 626       guint y;
 627
 628       for (y = 1; y < DRAG_HANDLE_SIZE; y += 3)
 629
 630         gtk_draw_hline (widget->style,
 631                         hb->bin_window,
 632                         GTK_WIDGET_STATE (widget),
 633                         widget->style->klass->xthickness,
 634                         width + DRAG_HANDLE_SIZE - widget->style->klass->xthickness,
 635                         hb->handle_position == GTK_POS_TOP ? y : height + y);
 636       gtk_draw_vline (widget->style,
 637                       hb->bin_window,
 638                       GTK_WIDGET_STATE (widget),
 639                       hb->handle_position == GTK_POS_TOP ? DRAG_HANDLE_SIZE : height,
 640                       hb->handle_position == GTK_POS_TOP ? 0 : height + DRAG_HANDLE_SIZE,
 641                       0);
 642       gtk_draw_vline (widget->style,
 643                       hb->bin_window,
 644                       GTK_WIDGET_STATE (widget),
 645                       hb->handle_position == GTK_POS_TOP ? DRAG_HANDLE_SIZE : height,
 646                       hb->handle_position == GTK_POS_TOP ? 0 : height + DRAG_HANDLE_SIZE,
 647                       width - widget->style->klass->xthickness);
 648     }
 649
 650
 651   if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
 652     {
 653       GdkRectangle child_area;
 654       GdkEventExpose child_event;
 655
 656       if (!event) /* we were called from draw() */
 657         {
 658           if (gtk_widget_intersect (bin->child, area, &child_area))
 659             gtk_widget_draw (bin->child, &child_area);
 660         }
 661       else /* we were called from expose() */
 662         {
 663           child_event = *event;
 664
 665           if (GTK_WIDGET_NO_WINDOW (bin->child) &&
 666               gtk_widget_intersect (bin->child, &event->area, &child_event.area))
 667             gtk_widget_event (bin->child, (GdkEvent *) &child_event);
 668         }
 669     }
 670 }
 671
 672 static void
 673 gtk_handle_box_draw (GtkWidget    *widget,
 674                      GdkRectangle *area)
 675 {
 676   GtkHandleBox *hb;
 677
 678   g_return_if_fail (widget != NULL);
 679   g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
 680   g_return_if_fail (area != NULL);
 681
 682   hb = GTK_HANDLE_BOX (widget);
 683
 684   if (GTK_WIDGET_DRAWABLE (widget))
 685     {
 686       if (hb->child_detached)
 687         {
 688           /* The area parameter does not make sense in this case, so we
 689            * repaint everything.
 690            */
 691
 692           gtk_handle_box_draw_ghost (hb);
 693
 694           area->x = 0;
 695           area->y = 0;
 696           area->width = 2 * GTK_CONTAINER (hb)->border_width + DRAG_HANDLE_SIZE;
 697           area->height = area->width + GTK_BIN (hb)->child->allocation.height;
 698           area->width += GTK_BIN (hb)->child->allocation.width;
 699
 700           gtk_handle_box_paint (widget, NULL, area);
 701         }
 702       else
 703         gtk_handle_box_paint (widget, NULL, area);
 704     }
 705 }
 706
 707 static gint
 708 gtk_handle_box_expose (GtkWidget      *widget,
 709                        GdkEventExpose *event)
 710 {
 711   GtkHandleBox *hb;
 712
 713   g_return_val_if_fail (widget != NULL, FALSE);
 714   g_return_val_if_fail (GTK_IS_HANDLE_BOX (widget), FALSE);
 715   g_return_val_if_fail (event != NULL, FALSE);
 716
 717   if (GTK_WIDGET_DRAWABLE (widget))
 718     {
 719       hb = GTK_HANDLE_BOX (widget);
 720
 721       if (event->window == widget->window)
 722         {
 723           if (hb->child_detached)
 724             gtk_handle_box_draw_ghost (hb);
 725         }
 726       else
 727         gtk_handle_box_paint (widget, event, NULL);
 728     }
 729
 730   return FALSE;
 731 }
 732
 733 static gint
 734 gtk_handle_box_button_changed (GtkWidget      *widget,
 735                                GdkEventButton *event)
 736 {
 737   GtkHandleBox *hb;
 738   gboolean event_handled;
 739
 740   g_return_val_if_fail (widget != NULL, FALSE);
 741   g_return_val_if_fail (GTK_IS_HANDLE_BOX (widget), FALSE);
 742   g_return_val_if_fail (event != NULL, FALSE);
 743
 744   hb = GTK_HANDLE_BOX (widget);
 745
 746   event_handled = FALSE;
 747   if (event->button == 1 &&
 748       event->type == GDK_BUTTON_PRESS)
 749     {
 750       GtkWidget *child;
 751       gboolean in_handle;
 752
 753       child = GTK_BIN (hb)->child;
 754
 755       switch (hb->handle_position)
 756         {
 757         case GTK_POS_LEFT:
 758           in_handle = event->x < DRAG_HANDLE_SIZE;
 759           break;
 760         case GTK_POS_TOP:
 761           in_handle = event->y < DRAG_HANDLE_SIZE;
 762           break;
 763         case GTK_POS_RIGHT:
 764           in_handle = event->x > 2 * GTK_CONTAINER (hb)->border_width + child->allocation.width;
 765           break;
 766         case GTK_POS_BOTTOM:
 767           in_handle = event->y > 2 * GTK_CONTAINER (hb)->border_width + child->allocation.height;
 768           break;
 769         default:
 770           in_handle = FALSE;
 771           break;
 772         }
 773
 774       if (!child)
 775         {
 776           in_handle = FALSE;
 777           event_handled = TRUE;
 778         }
 779
 780       if (in_handle)
 781         {
 782           hb->dragoff_x = event->x;
 783           hb->dragoff_y = event->y;
 784
 785           gtk_grab_add (widget);
 786           hb->in_drag = TRUE;
 787           while (gdk_pointer_grab (hb->bin_window,
 788                                    FALSE,
 789                                    (GDK_BUTTON1_MOTION_MASK |
 790                                     GDK_POINTER_MOTION_HINT_MASK |
 791                                     GDK_BUTTON_RELEASE_MASK),
 792                                    NULL,
 793                                    hb->fleur_cursor,
 794                                    GDK_CURRENT_TIME) != 0); /* wait for success */
 795           event_handled = TRUE;
 796         }
 797     }
 798   else if (event->type == GDK_BUTTON_RELEASE &&
 799            hb->in_drag)
 800     {
 801       gdk_pointer_ungrab (GDK_CURRENT_TIME);
 802       gtk_grab_remove (widget);
 803       hb->in_drag = FALSE;
 804       event_handled = TRUE;
 805     }
 806
 807   return event_handled;
 808 }
 809
 810 static gint
 811 gtk_handle_box_motion (GtkWidget      *widget,
 812                        GdkEventMotion *event)
 813 {
 814   GtkHandleBox *hb;
 815   gint new_x, new_y;
 816   gint ox, oy;
 817   gint snap_x, snap_y;
 818   gboolean in_handle;
 819
 820   g_return_val_if_fail (widget != NULL, FALSE);
 821   g_return_val_if_fail (GTK_IS_HANDLE_BOX (widget), FALSE);
 822   g_return_val_if_fail (event != NULL, FALSE);
 823
 824   hb = GTK_HANDLE_BOX (widget);
 825   if (!hb->in_drag)
 826     return FALSE;
 827
 828   ox = 0;
 829   oy = 0;
 830   gdk_window_get_origin (hb->float_window, &ox, &oy);
 831   new_x = 0;
 832   new_y = 0;
 833   gdk_window_get_pointer (hb->float_window, &new_x, &new_y, NULL);
 834   new_x += ox;
 835   new_y += oy;
 836   new_x -= hb->dragoff_x;
 837   new_y -= hb->dragoff_y;
 838   snap_x = 0;
 839   snap_y = 0;
 840   gdk_window_get_pointer (widget->window, &snap_x, &snap_y, NULL);
 841
 842   switch (hb->handle_position)
 843     {
 844     case GTK_POS_LEFT:
 845       in_handle = (snap_x >= 0 && snap_x <= DRAG_HANDLE_SIZE &&
 846                    snap_y >= 0 && snap_y <= widget->allocation.height);
 847       break;
 848     case GTK_POS_TOP:
 849       in_handle = (snap_x >= 0 && snap_x <= widget->allocation.width &&
 850                    snap_y >= 0 && snap_y <= DRAG_HANDLE_SIZE);
 851       break;
 852     case GTK_POS_RIGHT:
 853       in_handle = (snap_x >= widget->allocation.width - DRAG_HANDLE_SIZE && snap_x <= widget->allocation.width &&
 854                    snap_y >= 0 && snap_y <= widget->allocation.height);
 855       break;
 856     case GTK_POS_BOTTOM:
 857       in_handle = (snap_x >= 0 && snap_x <= widget->allocation.width &&
 858                    snap_y >= widget->allocation.height - DRAG_HANDLE_SIZE && snap_y <= widget->allocation.height);
 859       break;
 860     default:
 861       in_handle = FALSE;
 862       break;
 863     }
 864
 865   if (in_handle)
 866     {
 867       if (hb->child_detached)
 868         {
 869           gdk_pointer_ungrab (GDK_CURRENT_TIME);
 870
 871           hb->child_detached = FALSE;
 872           gdk_window_hide (hb->float_window);
 873           gdk_window_reparent (hb->bin_window, widget->window, 0, 0);
 874           hb->float_window_mapped = FALSE;
 875           gtk_signal_emit (GTK_OBJECT (hb),
 876                            handle_box_signals[SIGNAL_CHILD_ATTACHED],
 877                            GTK_BIN (hb)->child);
 878
 879           while (gdk_pointer_grab (hb->bin_window,
 880                                    FALSE,
 881                                    (GDK_BUTTON1_MOTION_MASK |
 882                                     GDK_POINTER_MOTION_HINT_MASK |
 883                                     GDK_BUTTON_RELEASE_MASK),
 884                                    NULL,
 885                                    hb->fleur_cursor,
 886                                    GDK_CURRENT_TIME) != 0); /* wait for success */
 887
 888           gtk_widget_queue_resize (widget);
 889         }
 890     }
 891   else
 892     {
 893       if (hb->child_detached)
 894         {
 895           gdk_window_move (hb->float_window, new_x, new_y);
 896           gdk_window_raise (hb->float_window);
 897         }
 898       else
 899         {
 900           gint width;
 901           gint height;
 902
 903           gdk_pointer_ungrab (GDK_CURRENT_TIME);
 904
 905           hb->child_detached = TRUE;
 906           width = 0;
 907           height = 0;
 908           gdk_window_get_size (hb->bin_window, &width, &height);
 909           gdk_window_move_resize (hb->float_window, new_x, new_y, width, height);
 910           gdk_window_reparent (hb->bin_window, hb->float_window, 0, 0);
 911           gdk_window_set_hints (hb->float_window, new_x, new_y, 0, 0, 0, 0, GDK_HINT_POS);
 912           gdk_window_show (hb->float_window);
 913           hb->float_window_mapped = TRUE;
 914 #if     0
 915           /* this extra move is neccessary if we use decorations, or our
 916            * window manager insists on decorations.
 917            */
 918           gdk_flush ();
 919           gdk_window_move (hb->float_window, new_x, new_y);
 920           gdk_flush ();
 921 #endif  /* 0 */
 922           gtk_signal_emit (GTK_OBJECT (hb),
 923                            handle_box_signals[SIGNAL_CHILD_DETACHED],
 924                            GTK_BIN (hb)->child);
 925           gtk_handle_box_draw_ghost (hb);
 926
 927           while (gdk_pointer_grab (hb->bin_window,
 928                                    FALSE,
 929                                    (GDK_BUTTON1_MOTION_MASK |
 930                                     GDK_POINTER_MOTION_HINT_MASK |
 931                                     GDK_BUTTON_RELEASE_MASK),
 932                                    NULL,
 933                                    hb->fleur_cursor,
 934                                    GDK_CURRENT_TIME) != 0); /* wait for success */
 935
 936           gtk_widget_queue_resize (widget);
 937         }
 938     }
 939
 940   return TRUE;
 941 }
 942
 943 static void
 944 gtk_handle_box_add (GtkContainer *container,
 945                     GtkWidget    *widget)
 946 {
 947   g_return_if_fail (GTK_IS_HANDLE_BOX (container));
 948   g_return_if_fail (GTK_BIN (container)->child == NULL);
 949   g_return_if_fail (widget->parent == NULL);
 950
 951   gtk_widget_set_parent_window (widget, GTK_HANDLE_BOX (container)->bin_window);
 952   GTK_CONTAINER_CLASS (parent_class)->add (container, widget);
 953 }
 954
 955 static void
 956 gtk_handle_box_remove (GtkContainer *container,
 957                        GtkWidget    *widget)
 958 {
 959   GtkHandleBox *hb;
 960
 961   g_return_if_fail (GTK_IS_HANDLE_BOX (container));
 962   g_return_if_fail (GTK_BIN (container)->child == widget);
 963
 964   hb = GTK_HANDLE_BOX (container);
 965
 966   if (hb->child_detached)
 967     {
 968       hb->child_detached = FALSE;
 969       if (GTK_WIDGET_REALIZED (hb))
 970         {
 971           gdk_window_hide (hb->float_window);
 972           gdk_window_reparent (hb->bin_window, GTK_WIDGET (hb)->window, 0, 0);
 973         }
 974       hb->float_window_mapped = FALSE;
 975     }
 976   if (hb->in_drag)
 977     {
 978       gdk_pointer_ungrab (GDK_CURRENT_TIME);
 979       gtk_grab_remove (GTK_WIDGET (container));
 980       hb->in_drag = FALSE;
 981     }
 982
 983   GTK_CONTAINER_CLASS (parent_class)->remove (container, widget);
 984 }
 985
 986 static gint
 987 gtk_handle_box_delete_event (GtkWidget *widget,
 988                              GdkEventAny  *event)
 989 {
 990   GtkHandleBox *hb;
 991
 992   g_return_val_if_fail (widget != NULL, FALSE);
 993   g_return_val_if_fail (GTK_IS_HANDLE_BOX (widget), FALSE);
 994   g_return_val_if_fail (event != NULL, FALSE);
 995
 996   hb = GTK_HANDLE_BOX (widget);
 997   g_return_val_if_fail (event->window == hb->float_window, FALSE);
 998
 999   hb->child_detached = FALSE;
1000   gdk_window_hide (hb->float_window);
1001   gdk_window_reparent (hb->bin_window, widget->window, 0, 0);
1002   hb->float_window_mapped = FALSE;
1003   gtk_signal_emit (GTK_OBJECT (hb),
1004                    handle_box_signals[SIGNAL_CHILD_ATTACHED],
1005                    GTK_BIN (hb)->child);
1006   if (hb->in_drag)
1007     {
1008       gdk_pointer_ungrab (GDK_CURRENT_TIME);
1009       gtk_grab_remove (widget);
1010       hb->in_drag = FALSE;
1011     }
1012
1013   gtk_widget_queue_resize (GTK_WIDGET (hb));
1014
1015   return TRUE;
1016 }