Pileus Git - ~andy/gtk/blob - gtk/gtkframe.c

   1 /* GTK - The GIMP Toolkit
   2  * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20 /*
  21  * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS
  22  * file for a list of people on the GTK+ Team.  See the ChangeLog
  23  * files for a list of changes.  These files are distributed with
  24  * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
  25  */
  26
  27 #include "config.h"
  28 #include <string.h>
  29 #include "gtkframe.h"
  30 #include "gtklabel.h"
  31 #include "gtkprivate.h"
  32 #include "gtkintl.h"
  33 #include "gtkbuildable.h"
  34 #include "gtksizerequest.h"
  35 #include "gtkalias.h"
  36
  37 #define LABEL_PAD 1
  38 #define LABEL_SIDE_PAD 2
  39
  40 enum {
  41   PROP_0,
  42   PROP_LABEL,
  43   PROP_LABEL_XALIGN,
  44   PROP_LABEL_YALIGN,
  45   PROP_SHADOW,
  46   PROP_SHADOW_TYPE,
  47   PROP_LABEL_WIDGET
  48 };
  49
  50 static void gtk_frame_set_property (GObject      *object,
  51                                     guint         param_id,
  52                                     const GValue *value,
  53                                     GParamSpec   *pspec);
  54 static void gtk_frame_get_property (GObject     *object,
  55                                     guint        param_id,
  56                                     GValue      *value,
  57                                     GParamSpec  *pspec);
  58 static void gtk_frame_paint         (GtkWidget      *widget,
  59                                      GdkRectangle   *area);
  60 static gint gtk_frame_expose        (GtkWidget      *widget,
  61                                      GdkEventExpose *event);
  62 static void gtk_frame_size_allocate (GtkWidget      *widget,
  63                                      GtkAllocation  *allocation);
  64 static void gtk_frame_remove        (GtkContainer   *container,
  65                                      GtkWidget      *child);
  66 static void gtk_frame_forall        (GtkContainer   *container,
  67                                      gboolean        include_internals,
  68                                      GtkCallback     callback,
  69                                      gpointer        callback_data);
  70
  71 static void gtk_frame_compute_child_allocation      (GtkFrame      *frame,
  72                                                      GtkAllocation *child_allocation);
  73 static void gtk_frame_real_compute_child_allocation (GtkFrame      *frame,
  74                                                      GtkAllocation *child_allocation);
  75
  76 /* GtkBuildable */
  77 static void gtk_frame_buildable_init                (GtkBuildableIface *iface);
  78 static void gtk_frame_buildable_add_child           (GtkBuildable *buildable,
  79                                                      GtkBuilder   *builder,
  80                                                      GObject      *child,
  81                                                      const gchar  *type);
  82
  83 static void gtk_frame_size_request_init             (GtkSizeRequestIface *iface);
  84 static void gtk_frame_get_width                     (GtkSizeRequest      *widget,
  85                                                      gint                *minimum_size,
  86                                                      gint                *natural_size);
  87 static void gtk_frame_get_height                    (GtkSizeRequest      *widget,
  88                                                      gint                *minimum_size,
  89                                                      gint                *natural_size);
  90
  91 G_DEFINE_TYPE_WITH_CODE (GtkFrame, gtk_frame, GTK_TYPE_BIN,
  92                          G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
  93                                                 gtk_frame_buildable_init)
  94                          G_IMPLEMENT_INTERFACE (GTK_TYPE_SIZE_REQUEST,
  95                                                 gtk_frame_size_request_init))
  96
  97 static void
  98 gtk_frame_class_init (GtkFrameClass *class)
  99 {
 100   GObjectClass *gobject_class;
 101   GtkWidgetClass *widget_class;
 102   GtkContainerClass *container_class;
 103
 104   gobject_class = (GObjectClass*) class;
 105   widget_class = GTK_WIDGET_CLASS (class);
 106   container_class = GTK_CONTAINER_CLASS (class);
 107
 108   gobject_class->set_property = gtk_frame_set_property;
 109   gobject_class->get_property = gtk_frame_get_property;
 110
 111   g_object_class_install_property (gobject_class,
 112                                    PROP_LABEL,
 113                                    g_param_spec_string ("label",
 114                                                         P_("Label"),
 115                                                         P_("Text of the frame's label"),
 116                                                         NULL,
 117                                                         GTK_PARAM_READABLE |
 118                                                         GTK_PARAM_WRITABLE));
 119   g_object_class_install_property (gobject_class,
 120                                    PROP_LABEL_XALIGN,
 121                                    g_param_spec_float ("label-xalign",
 122                                                        P_("Label xalign"),
 123                                                        P_("The horizontal alignment of the label"),
 124                                                        0.0,
 125                                                        1.0,
 126                                                        0.0,
 127                                                        GTK_PARAM_READWRITE));
 128   g_object_class_install_property (gobject_class,
 129                                    PROP_LABEL_YALIGN,
 130                                    g_param_spec_float ("label-yalign",
 131                                                        P_("Label yalign"),
 132                                                        P_("The vertical alignment of the label"),
 133                                                        0.0,
 134                                                        1.0,
 135                                                        0.5,
 136                                                        GTK_PARAM_READWRITE));
 137   g_object_class_install_property (gobject_class,
 138                                    PROP_SHADOW,
 139                                    g_param_spec_enum ("shadow", NULL,
 140                                                       P_("Deprecated property, use shadow_type instead"),
 141                                                       GTK_TYPE_SHADOW_TYPE,
 142                                                       GTK_SHADOW_ETCHED_IN,
 143                                                       GTK_PARAM_READWRITE));
 144   g_object_class_install_property (gobject_class,
 145                                    PROP_SHADOW_TYPE,
 146                                    g_param_spec_enum ("shadow-type",
 147                                                       P_("Frame shadow"),
 148                                                       P_("Appearance of the frame border"),
 149                                                       GTK_TYPE_SHADOW_TYPE,
 150                                                       GTK_SHADOW_ETCHED_IN,
 151                                                       GTK_PARAM_READWRITE));
 152
 153   g_object_class_install_property (gobject_class,
 154                                    PROP_LABEL_WIDGET,
 155                                    g_param_spec_object ("label-widget",
 156                                                         P_("Label widget"),
 157                                                         P_("A widget to display in place of the usual frame label"),
 158                                                         GTK_TYPE_WIDGET,
 159                                                         GTK_PARAM_READWRITE));
 160
 161   widget_class->expose_event = gtk_frame_expose;
 162   widget_class->size_allocate = gtk_frame_size_allocate;
 163
 164   container_class->remove = gtk_frame_remove;
 165   container_class->forall = gtk_frame_forall;
 166
 167   class->compute_child_allocation = gtk_frame_real_compute_child_allocation;
 168 }
 169
 170 static void
 171 gtk_frame_buildable_init (GtkBuildableIface *iface)
 172 {
 173   iface->add_child = gtk_frame_buildable_add_child;
 174 }
 175
 176 static void
 177 gtk_frame_buildable_add_child (GtkBuildable *buildable,
 178                                GtkBuilder   *builder,
 179                                GObject      *child,
 180                                const gchar  *type)
 181 {
 182   if (type && strcmp (type, "label") == 0)
 183     gtk_frame_set_label_widget (GTK_FRAME (buildable), GTK_WIDGET (child));
 184   else if (!type)
 185     gtk_container_add (GTK_CONTAINER (buildable), GTK_WIDGET (child));
 186   else
 187     GTK_BUILDER_WARN_INVALID_CHILD_TYPE (GTK_FRAME (buildable), type);
 188 }
 189
 190 static void
 191 gtk_frame_init (GtkFrame *frame)
 192 {
 193   frame->label_widget = NULL;
 194   frame->shadow_type = GTK_SHADOW_ETCHED_IN;
 195   frame->label_xalign = 0.0;
 196   frame->label_yalign = 0.5;
 197 }
 198
 199 static void
 200 gtk_frame_set_property (GObject         *object,
 201                         guint            prop_id,
 202                         const GValue    *value,
 203                         GParamSpec      *pspec)
 204 {
 205   GtkFrame *frame;
 206
 207   frame = GTK_FRAME (object);
 208
 209   switch (prop_id)
 210     {
 211     case PROP_LABEL:
 212       gtk_frame_set_label (frame, g_value_get_string (value));
 213       break;
 214     case PROP_LABEL_XALIGN:
 215       gtk_frame_set_label_align (frame, g_value_get_float (value),
 216                                  frame->label_yalign);
 217       break;
 218     case PROP_LABEL_YALIGN:
 219       gtk_frame_set_label_align (frame, frame->label_xalign,
 220                                  g_value_get_float (value));
 221       break;
 222     case PROP_SHADOW:
 223     case PROP_SHADOW_TYPE:
 224       gtk_frame_set_shadow_type (frame, g_value_get_enum (value));
 225       break;
 226     case PROP_LABEL_WIDGET:
 227       gtk_frame_set_label_widget (frame, g_value_get_object (value));
 228       break;
 229     default:
 230       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 231       break;
 232     }
 233 }
 234
 235 static void
 236 gtk_frame_get_property (GObject         *object,
 237                         guint            prop_id,
 238                         GValue          *value,
 239                         GParamSpec      *pspec)
 240 {
 241   GtkFrame *frame;
 242
 243   frame = GTK_FRAME (object);
 244
 245   switch (prop_id)
 246     {
 247     case PROP_LABEL:
 248       g_value_set_string (value, gtk_frame_get_label (frame));
 249       break;
 250     case PROP_LABEL_XALIGN:
 251       g_value_set_float (value, frame->label_xalign);
 252       break;
 253     case PROP_LABEL_YALIGN:
 254       g_value_set_float (value, frame->label_yalign);
 255       break;
 256     case PROP_SHADOW:
 257     case PROP_SHADOW_TYPE:
 258       g_value_set_enum (value, frame->shadow_type);
 259       break;
 260     case PROP_LABEL_WIDGET:
 261       g_value_set_object (value,
 262                           frame->label_widget ?
 263                           G_OBJECT (frame->label_widget) : NULL);
 264       break;
 265     default:
 266       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 267       break;
 268     }
 269 }
 270
 271 /**
 272  * gtk_frame_new:
 273  * @label: the text to use as the label of the frame
 274  *
 275  * Creates a new #GtkFrame, with optional label @label.
 276  * If @label is %NULL, the label is omitted.
 277  *
 278  * Return value: a new #GtkFrame widget
 279  **/
 280 GtkWidget*
 281 gtk_frame_new (const gchar *label)
 282 {
 283   return g_object_new (GTK_TYPE_FRAME, "label", label, NULL);
 284 }
 285
 286 static void
 287 gtk_frame_remove (GtkContainer *container,
 288                   GtkWidget    *child)
 289 {
 290   GtkFrame *frame = GTK_FRAME (container);
 291
 292   if (frame->label_widget == child)
 293     gtk_frame_set_label_widget (frame, NULL);
 294   else
 295     GTK_CONTAINER_CLASS (gtk_frame_parent_class)->remove (container, child);
 296 }
 297
 298 static void
 299 gtk_frame_forall (GtkContainer *container,
 300                   gboolean      include_internals,
 301                   GtkCallback   callback,
 302                   gpointer      callback_data)
 303 {
 304   GtkBin *bin = GTK_BIN (container);
 305   GtkFrame *frame = GTK_FRAME (container);
 306
 307   if (bin->child)
 308     (* callback) (bin->child, callback_data);
 309
 310   if (frame->label_widget)
 311     (* callback) (frame->label_widget, callback_data);
 312 }
 313
 314 /**
 315  * gtk_frame_set_label:
 316  * @frame: a #GtkFrame
 317  * @label: (allow-none): the text to use as the label of the frame
 318  *
 319  * Sets the text of the label. If @label is %NULL,
 320  * the current label is removed.
 321  **/
 322 void
 323 gtk_frame_set_label (GtkFrame *frame,
 324                      const gchar *label)
 325 {
 326   g_return_if_fail (GTK_IS_FRAME (frame));
 327
 328   if (!label)
 329     {
 330       gtk_frame_set_label_widget (frame, NULL);
 331     }
 332   else
 333     {
 334       GtkWidget *child = gtk_label_new (label);
 335       gtk_widget_show (child);
 336
 337       gtk_frame_set_label_widget (frame, child);
 338     }
 339 }
 340
 341 /**
 342  * gtk_frame_get_label:
 343  * @frame: a #GtkFrame
 344  *
 345  * If the frame's label widget is a #GtkLabel, returns the
 346  * text in the label widget. (The frame will have a #GtkLabel
 347  * for the label widget if a non-%NULL argument was passed
 348  * to gtk_frame_new().)
 349  *
 350  * Return value: the text in the label, or %NULL if there
 351  *               was no label widget or the lable widget was not
 352  *               a #GtkLabel. This string is owned by GTK+ and
 353  *               must not be modified or freed.
 354  **/
 355 G_CONST_RETURN gchar *
 356 gtk_frame_get_label (GtkFrame *frame)
 357 {
 358   g_return_val_if_fail (GTK_IS_FRAME (frame), NULL);
 359
 360   if (GTK_IS_LABEL (frame->label_widget))
 361     return gtk_label_get_text (GTK_LABEL (frame->label_widget));
 362   else
 363     return NULL;
 364 }
 365
 366 /**
 367  * gtk_frame_set_label_widget:
 368  * @frame: a #GtkFrame
 369  * @label_widget: the new label widget
 370  *
 371  * Sets the label widget for the frame. This is the widget that
 372  * will appear embedded in the top edge of the frame as a
 373  * title.
 374  **/
 375 void
 376 gtk_frame_set_label_widget (GtkFrame  *frame,
 377                             GtkWidget *label_widget)
 378 {
 379   gboolean need_resize = FALSE;
 380
 381   g_return_if_fail (GTK_IS_FRAME (frame));
 382   g_return_if_fail (label_widget == NULL || GTK_IS_WIDGET (label_widget));
 383   g_return_if_fail (label_widget == NULL || label_widget->parent == NULL);
 384
 385   if (frame->label_widget == label_widget)
 386     return;
 387
 388   if (frame->label_widget)
 389     {
 390       need_resize = gtk_widget_get_visible (frame->label_widget);
 391       gtk_widget_unparent (frame->label_widget);
 392     }
 393
 394   frame->label_widget = label_widget;
 395
 396   if (label_widget)
 397     {
 398       frame->label_widget = label_widget;
 399       gtk_widget_set_parent (label_widget, GTK_WIDGET (frame));
 400       need_resize |= gtk_widget_get_visible (label_widget);
 401     }
 402
 403   if (gtk_widget_get_visible (GTK_WIDGET (frame)) && need_resize)
 404     gtk_widget_queue_resize (GTK_WIDGET (frame));
 405
 406   g_object_freeze_notify (G_OBJECT (frame));
 407   g_object_notify (G_OBJECT (frame), "label-widget");
 408   g_object_notify (G_OBJECT (frame), "label");
 409   g_object_thaw_notify (G_OBJECT (frame));
 410 }
 411
 412 /**
 413  * gtk_frame_get_label_widget:
 414  * @frame: a #GtkFrame
 415  *
 416  * Retrieves the label widget for the frame. See
 417  * gtk_frame_set_label_widget().
 418  *
 419  * Return value: the label widget, or %NULL if there is none.
 420  **/
 421 GtkWidget *
 422 gtk_frame_get_label_widget (GtkFrame *frame)
 423 {
 424   g_return_val_if_fail (GTK_IS_FRAME (frame), NULL);
 425
 426   return frame->label_widget;
 427 }
 428
 429 /**
 430  * gtk_frame_set_label_align:
 431  * @frame: a #GtkFrame
 432  * @xalign: The position of the label along the top edge
 433  *   of the widget. A value of 0.0 represents left alignment;
 434  *   1.0 represents right alignment.
 435  * @yalign: The y alignment of the label. A value of 0.0 aligns under
 436  *   the frame; 1.0 aligns above the frame. If the values are exactly
 437  *   0.0 or 1.0 the gap in the frame won't be painted because the label
 438  *   will be completely above or below the frame.
 439  *
 440  * Sets the alignment of the frame widget's label. The
 441  * default values for a newly created frame are 0.0 and 0.5.
 442  **/
 443 void
 444 gtk_frame_set_label_align (GtkFrame *frame,
 445                            gfloat    xalign,
 446                            gfloat    yalign)
 447 {
 448   g_return_if_fail (GTK_IS_FRAME (frame));
 449
 450   xalign = CLAMP (xalign, 0.0, 1.0);
 451   yalign = CLAMP (yalign, 0.0, 1.0);
 452
 453   g_object_freeze_notify (G_OBJECT (frame));
 454   if (xalign != frame->label_xalign)
 455     {
 456       frame->label_xalign = xalign;
 457       g_object_notify (G_OBJECT (frame), "label-xalign");
 458     }
 459
 460   if (yalign != frame->label_yalign)
 461     {
 462       frame->label_yalign = yalign;
 463       g_object_notify (G_OBJECT (frame), "label-yalign");
 464     }
 465
 466   g_object_thaw_notify (G_OBJECT (frame));
 467   gtk_widget_queue_resize (GTK_WIDGET (frame));
 468 }
 469
 470 /**
 471  * gtk_frame_get_label_align:
 472  * @frame: a #GtkFrame
 473  * @xalign: (allow-none): location to store X alignment of frame's label, or %NULL
 474  * @yalign: (allow-none): location to store X alignment of frame's label, or %NULL
 475  *
 476  * Retrieves the X and Y alignment of the frame's label. See
 477  * gtk_frame_set_label_align().
 478  **/
 479 void
 480 gtk_frame_get_label_align (GtkFrame *frame,
 481                            gfloat   *xalign,
 482                            gfloat   *yalign)
 483 {
 484   g_return_if_fail (GTK_IS_FRAME (frame));
 485
 486   if (xalign)
 487     *xalign = frame->label_xalign;
 488   if (yalign)
 489     *yalign = frame->label_yalign;
 490 }
 491
 492 /**
 493  * gtk_frame_set_shadow_type:
 494  * @frame: a #GtkFrame
 495  * @type: the new #GtkShadowType
 496  *
 497  * Sets the shadow type for @frame.
 498  **/
 499 void
 500 gtk_frame_set_shadow_type (GtkFrame      *frame,
 501                            GtkShadowType  type)
 502 {
 503   GtkWidget *widget;
 504
 505   g_return_if_fail (GTK_IS_FRAME (frame));
 506
 507   if ((GtkShadowType) frame->shadow_type != type)
 508     {
 509       widget = GTK_WIDGET (frame);
 510       frame->shadow_type = type;
 511       g_object_notify (G_OBJECT (frame), "shadow-type");
 512
 513       if (gtk_widget_is_drawable (widget))
 514         {
 515           gtk_widget_queue_draw (widget);
 516         }
 517
 518       gtk_widget_queue_resize (widget);
 519     }
 520 }
 521
 522 /**
 523  * gtk_frame_get_shadow_type:
 524  * @frame: a #GtkFrame
 525  *
 526  * Retrieves the shadow type of the frame. See
 527  * gtk_frame_set_shadow_type().
 528  *
 529  * Return value: the current shadow type of the frame.
 530  **/
 531 GtkShadowType
 532 gtk_frame_get_shadow_type (GtkFrame *frame)
 533 {
 534   g_return_val_if_fail (GTK_IS_FRAME (frame), GTK_SHADOW_ETCHED_IN);
 535
 536   return frame->shadow_type;
 537 }
 538
 539 static void
 540 gtk_frame_paint (GtkWidget    *widget,
 541                  GdkRectangle *area)
 542 {
 543   GtkFrame *frame;
 544   gint x, y, width, height;
 545
 546   if (gtk_widget_is_drawable (widget))
 547     {
 548       frame = GTK_FRAME (widget);
 549
 550       x = frame->child_allocation.x - widget->style->xthickness;
 551       y = frame->child_allocation.y - widget->style->ythickness;
 552       width = frame->child_allocation.width + 2 * widget->style->xthickness;
 553       height =  frame->child_allocation.height + 2 * widget->style->ythickness;
 554
 555       if (frame->label_widget)
 556         {
 557           GtkRequisition child_requisition;
 558           gfloat xalign;
 559           gint height_extra;
 560           gint x2;
 561
 562           gtk_widget_get_child_requisition (frame->label_widget, &child_requisition);
 563
 564           if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR)
 565             xalign = frame->label_xalign;
 566           else
 567             xalign = 1 - frame->label_xalign;
 568
 569           height_extra = MAX (0, child_requisition.height - widget->style->ythickness)
 570             - frame->label_yalign * child_requisition.height;
 571           y -= height_extra;
 572           height += height_extra;
 573
 574           x2 = widget->style->xthickness + (frame->child_allocation.width - child_requisition.width - 2 * LABEL_PAD - 2 * LABEL_SIDE_PAD) * xalign + LABEL_SIDE_PAD;
 575
 576           /* If the label is completely over or under the frame we can omit the gap */
 577           if (frame->label_yalign == 0.0 || frame->label_yalign == 1.0)
 578             gtk_paint_shadow (widget->style, widget->window,
 579                               widget->state, frame->shadow_type,
 580                               area, widget, "frame",
 581                               x, y, width, height);
 582           else
 583             gtk_paint_shadow_gap (widget->style, widget->window,
 584                                   widget->state, frame->shadow_type,
 585                                   area, widget, "frame",
 586                                   x, y, width, height,
 587                                   GTK_POS_TOP,
 588                                   x2, child_requisition.width + 2 * LABEL_PAD);
 589         }
 590        else
 591          gtk_paint_shadow (widget->style, widget->window,
 592                            widget->state, frame->shadow_type,
 593                            area, widget, "frame",
 594                            x, y, width, height);
 595     }
 596 }
 597
 598 static gboolean
 599 gtk_frame_expose (GtkWidget      *widget,
 600                   GdkEventExpose *event)
 601 {
 602   if (gtk_widget_is_drawable (widget))
 603     {
 604       gtk_frame_paint (widget, &event->area);
 605
 606       GTK_WIDGET_CLASS (gtk_frame_parent_class)->expose_event (widget, event);
 607     }
 608
 609   return FALSE;
 610 }
 611
 612 static void
 613 gtk_frame_size_allocate (GtkWidget     *widget,
 614                          GtkAllocation *allocation)
 615 {
 616   GtkFrame *frame = GTK_FRAME (widget);
 617   GtkBin *bin = GTK_BIN (widget);
 618   GtkAllocation new_allocation;
 619
 620   widget->allocation = *allocation;
 621
 622   gtk_frame_compute_child_allocation (frame, &new_allocation);
 623
 624   /* If the child allocation changed, that means that the frame is drawn
 625    * in a new place, so we must redraw the entire widget.
 626    */
 627   if (gtk_widget_get_mapped (widget)
 628 #if 0
 629       &&
 630       (new_allocation.x != frame->child_allocation.x ||
 631        new_allocation.y != frame->child_allocation.y ||
 632        new_allocation.width != frame->child_allocation.width ||
 633        new_allocation.height != frame->child_allocation.height)
 634 #endif
 635      )
 636     gdk_window_invalidate_rect (widget->window, &widget->allocation, FALSE);
 637
 638   if (bin->child && gtk_widget_get_visible (bin->child))
 639     gtk_widget_size_allocate (bin->child, &new_allocation);
 640
 641   frame->child_allocation = new_allocation;
 642
 643   if (frame->label_widget && gtk_widget_get_visible (frame->label_widget))
 644     {
 645       GtkRequisition child_requisition;
 646       GtkAllocation child_allocation;
 647       gfloat xalign;
 648
 649       gtk_widget_get_child_requisition (frame->label_widget, &child_requisition);
 650
 651       if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR)
 652         xalign = frame->label_xalign;
 653       else
 654         xalign = 1 - frame->label_xalign;
 655
 656       child_allocation.x = frame->child_allocation.x + LABEL_SIDE_PAD +
 657         (frame->child_allocation.width - child_requisition.width - 2 * LABEL_PAD - 2 * LABEL_SIDE_PAD) * xalign + LABEL_PAD;
 658       child_allocation.width = MIN (child_requisition.width, new_allocation.width - 2 * LABEL_PAD - 2 * LABEL_SIDE_PAD);
 659
 660       child_allocation.y = frame->child_allocation.y - MAX (child_requisition.height, widget->style->ythickness);
 661       child_allocation.height = child_requisition.height;
 662
 663       gtk_widget_size_allocate (frame->label_widget, &child_allocation);
 664     }
 665 }
 666
 667 static void
 668 gtk_frame_compute_child_allocation (GtkFrame      *frame,
 669                                     GtkAllocation *child_allocation)
 670 {
 671   g_return_if_fail (GTK_IS_FRAME (frame));
 672   g_return_if_fail (child_allocation != NULL);
 673
 674   GTK_FRAME_GET_CLASS (frame)->compute_child_allocation (frame, child_allocation);
 675 }
 676
 677 static void
 678 gtk_frame_real_compute_child_allocation (GtkFrame      *frame,
 679                                          GtkAllocation *child_allocation)
 680 {
 681   GtkWidget *widget = GTK_WIDGET (frame);
 682   GtkAllocation *allocation = &widget->allocation;
 683   GtkRequisition child_requisition;
 684   gint top_margin;
 685
 686   if (frame->label_widget)
 687     {
 688       gtk_widget_get_child_requisition (frame->label_widget, &child_requisition);
 689       top_margin = MAX (child_requisition.height, widget->style->ythickness);
 690     }
 691   else
 692     top_margin = widget->style->ythickness;
 693
 694   child_allocation->x = (GTK_CONTAINER (frame)->border_width +
 695                          widget->style->xthickness);
 696   child_allocation->width = MAX(1, (gint)allocation->width - child_allocation->x * 2);
 697
 698   child_allocation->y = (GTK_CONTAINER (frame)->border_width + top_margin);
 699   child_allocation->height = MAX (1, ((gint)allocation->height - child_allocation->y -
 700                                       (gint)GTK_CONTAINER (frame)->border_width -
 701                                       (gint)widget->style->ythickness));
 702
 703   child_allocation->x += allocation->x;
 704   child_allocation->y += allocation->y;
 705 }
 706
 707 static void
 708 gtk_frame_get_size (GtkSizeRequest *request,
 709                     GtkOrientation  orientation,
 710                     gint           *minimum_size,
 711                     gint           *natural_size)
 712 {
 713   GtkWidget *widget = GTK_WIDGET (request);
 714   GtkFrame *frame = GTK_FRAME (widget);
 715   GtkBin *bin = GTK_BIN (widget);
 716   gint child_min, child_nat;
 717   gint minimum, natural;
 718
 719   if (frame->label_widget && gtk_widget_get_visible (frame->label_widget))
 720     {
 721       if (orientation == GTK_ORIENTATION_HORIZONTAL)
 722         {
 723           gtk_size_request_get_width (GTK_SIZE_REQUEST (frame->label_widget),
 724                                       &child_min, &child_nat);
 725           minimum = child_min + 2 * LABEL_PAD + 2 * LABEL_SIDE_PAD;
 726           natural = child_nat + 2 * LABEL_PAD + 2 * LABEL_SIDE_PAD;
 727         }
 728       else
 729         {
 730           gtk_size_request_get_height (GTK_SIZE_REQUEST (frame->label_widget),
 731                                        &child_min, &child_nat);
 732           minimum = MAX (0, child_min - widget->style->ythickness);
 733           natural = MAX (0, child_nat - widget->style->ythickness);
 734         }
 735     }
 736   else
 737     {
 738       minimum = 0;
 739       natural = 0;
 740     }
 741
 742   if (bin->child && gtk_widget_get_visible (bin->child))
 743     {
 744       if (orientation == GTK_ORIENTATION_HORIZONTAL)
 745         {
 746           gtk_size_request_get_width (GTK_SIZE_REQUEST (bin->child),
 747                                       &child_min, &child_nat);
 748           minimum = MAX (minimum, child_min);
 749           natural = MAX (natural, child_nat);
 750         }
 751       else
 752         {
 753           gtk_size_request_get_height (GTK_SIZE_REQUEST (bin->child),
 754                                        &child_min, &child_nat);
 755           minimum += child_min;
 756           natural += child_nat;
 757         }
 758     }
 759
 760   if (orientation == GTK_ORIENTATION_HORIZONTAL)
 761     {
 762       minimum += (GTK_CONTAINER (widget)->border_width +
 763                   GTK_WIDGET (widget)->style->xthickness) * 2;
 764       natural += (GTK_CONTAINER (widget)->border_width +
 765                   GTK_WIDGET (widget)->style->xthickness) * 2;
 766     }
 767   else
 768     {
 769       minimum += (GTK_CONTAINER (widget)->border_width +
 770                   GTK_WIDGET (widget)->style->ythickness) * 2;
 771       natural += (GTK_CONTAINER (widget)->border_width +
 772                   GTK_WIDGET (widget)->style->ythickness) * 2;
 773     }
 774
 775  if (minimum_size)
 776     *minimum_size = minimum;
 777
 778   if (natural_size)
 779     *natural_size = natural;
 780 }
 781
 782 static void
 783 gtk_frame_get_width (GtkSizeRequest *widget,
 784                      gint           *minimum_size,
 785                      gint           *natural_size)
 786 {
 787   gtk_frame_get_size (widget, GTK_ORIENTATION_HORIZONTAL, minimum_size, natural_size);
 788 }
 789
 790 static void
 791 gtk_frame_get_height (GtkSizeRequest *widget,
 792                       gint           *minimum_size,
 793                       gint           *natural_size)
 794 {
 795   gtk_frame_get_size (widget, GTK_ORIENTATION_VERTICAL, minimum_size, natural_size);
 796 }
 797
 798 static void
 799 gtk_frame_size_request_init (GtkSizeRequestIface *iface)
 800 {
 801   iface->get_width = gtk_frame_get_width;
 802   iface->get_height = gtk_frame_get_height;
 803 }
 804
 805 #define __GTK_FRAME_C__
 806 #include "gtkaliasdef.c"