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
  36 #define LABEL_PAD 1
  37 #define LABEL_SIDE_PAD 2
  38
  39 struct _GtkFramePriv
  40 {
  41   /* Properties */
  42   GtkWidget *label_widget;
  43
  44   gint16 shadow_type;
  45   gfloat label_xalign;
  46   gfloat label_yalign;
  47   /* Properties */
  48
  49   GtkAllocation child_allocation;
  50 };
  51
  52 enum {
  53   PROP_0,
  54   PROP_LABEL,
  55   PROP_LABEL_XALIGN,
  56   PROP_LABEL_YALIGN,
  57   PROP_SHADOW,
  58   PROP_SHADOW_TYPE,
  59   PROP_LABEL_WIDGET
  60 };
  61
  62 static void gtk_frame_set_property (GObject      *object,
  63                                     guint         param_id,
  64                                     const GValue *value,
  65                                     GParamSpec   *pspec);
  66 static void gtk_frame_get_property (GObject     *object,
  67                                     guint        param_id,
  68                                     GValue      *value,
  69                                     GParamSpec  *pspec);
  70 static void gtk_frame_paint         (GtkWidget      *widget,
  71                                      GdkRectangle   *area);
  72 static gint gtk_frame_expose        (GtkWidget      *widget,
  73                                      GdkEventExpose *event);
  74 static void gtk_frame_size_allocate (GtkWidget      *widget,
  75                                      GtkAllocation  *allocation);
  76 static void gtk_frame_remove        (GtkContainer   *container,
  77                                      GtkWidget      *child);
  78 static void gtk_frame_forall        (GtkContainer   *container,
  79                                      gboolean        include_internals,
  80                                      GtkCallback     callback,
  81                                      gpointer        callback_data);
  82
  83 static void gtk_frame_compute_child_allocation      (GtkFrame      *frame,
  84                                                      GtkAllocation *child_allocation);
  85 static void gtk_frame_real_compute_child_allocation (GtkFrame      *frame,
  86                                                      GtkAllocation *child_allocation);
  87
  88 /* GtkBuildable */
  89 static void gtk_frame_buildable_init                (GtkBuildableIface *iface);
  90 static void gtk_frame_buildable_add_child           (GtkBuildable *buildable,
  91                                                      GtkBuilder   *builder,
  92                                                      GObject      *child,
  93                                                      const gchar  *type);
  94
  95 static void gtk_frame_size_request_init             (GtkSizeRequestIface *iface);
  96 static void gtk_frame_get_width                     (GtkSizeRequest      *widget,
  97                                                      gint                *minimum_size,
  98                                                      gint                *natural_size);
  99 static void gtk_frame_get_height                    (GtkSizeRequest      *widget,
 100                                                      gint                *minimum_size,
 101                                                      gint                *natural_size);
 102
 103 G_DEFINE_TYPE_WITH_CODE (GtkFrame, gtk_frame, GTK_TYPE_BIN,
 104                          G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
 105                                                 gtk_frame_buildable_init)
 106                          G_IMPLEMENT_INTERFACE (GTK_TYPE_SIZE_REQUEST,
 107                                                 gtk_frame_size_request_init))
 108
 109 static void
 110 gtk_frame_class_init (GtkFrameClass *class)
 111 {
 112   GObjectClass *gobject_class;
 113   GtkWidgetClass *widget_class;
 114   GtkContainerClass *container_class;
 115
 116   gobject_class = (GObjectClass*) class;
 117   widget_class = GTK_WIDGET_CLASS (class);
 118   container_class = GTK_CONTAINER_CLASS (class);
 119
 120   gobject_class->set_property = gtk_frame_set_property;
 121   gobject_class->get_property = gtk_frame_get_property;
 122
 123   g_object_class_install_property (gobject_class,
 124                                    PROP_LABEL,
 125                                    g_param_spec_string ("label",
 126                                                         P_("Label"),
 127                                                         P_("Text of the frame's label"),
 128                                                         NULL,
 129                                                         GTK_PARAM_READABLE |
 130                                                         GTK_PARAM_WRITABLE));
 131   g_object_class_install_property (gobject_class,
 132                                    PROP_LABEL_XALIGN,
 133                                    g_param_spec_float ("label-xalign",
 134                                                        P_("Label xalign"),
 135                                                        P_("The horizontal alignment of the label"),
 136                                                        0.0,
 137                                                        1.0,
 138                                                        0.0,
 139                                                        GTK_PARAM_READWRITE));
 140   g_object_class_install_property (gobject_class,
 141                                    PROP_LABEL_YALIGN,
 142                                    g_param_spec_float ("label-yalign",
 143                                                        P_("Label yalign"),
 144                                                        P_("The vertical alignment of the label"),
 145                                                        0.0,
 146                                                        1.0,
 147                                                        0.5,
 148                                                        GTK_PARAM_READWRITE));
 149   g_object_class_install_property (gobject_class,
 150                                    PROP_SHADOW,
 151                                    g_param_spec_enum ("shadow", NULL,
 152                                                       P_("Deprecated property, use shadow_type instead"),
 153                                                       GTK_TYPE_SHADOW_TYPE,
 154                                                       GTK_SHADOW_ETCHED_IN,
 155                                                       GTK_PARAM_READWRITE));
 156   g_object_class_install_property (gobject_class,
 157                                    PROP_SHADOW_TYPE,
 158                                    g_param_spec_enum ("shadow-type",
 159                                                       P_("Frame shadow"),
 160                                                       P_("Appearance of the frame border"),
 161                                                       GTK_TYPE_SHADOW_TYPE,
 162                                                       GTK_SHADOW_ETCHED_IN,
 163                                                       GTK_PARAM_READWRITE));
 164
 165   g_object_class_install_property (gobject_class,
 166                                    PROP_LABEL_WIDGET,
 167                                    g_param_spec_object ("label-widget",
 168                                                         P_("Label widget"),
 169                                                         P_("A widget to display in place of the usual frame label"),
 170                                                         GTK_TYPE_WIDGET,
 171                                                         GTK_PARAM_READWRITE));
 172
 173   widget_class->expose_event = gtk_frame_expose;
 174   widget_class->size_allocate = gtk_frame_size_allocate;
 175
 176   container_class->remove = gtk_frame_remove;
 177   container_class->forall = gtk_frame_forall;
 178
 179   class->compute_child_allocation = gtk_frame_real_compute_child_allocation;
 180
 181   g_type_class_add_private (class, sizeof (GtkFramePriv));
 182 }
 183
 184 static void
 185 gtk_frame_buildable_init (GtkBuildableIface *iface)
 186 {
 187   iface->add_child = gtk_frame_buildable_add_child;
 188 }
 189
 190 static void
 191 gtk_frame_buildable_add_child (GtkBuildable *buildable,
 192                                GtkBuilder   *builder,
 193                                GObject      *child,
 194                                const gchar  *type)
 195 {
 196   if (type && strcmp (type, "label") == 0)
 197     gtk_frame_set_label_widget (GTK_FRAME (buildable), GTK_WIDGET (child));
 198   else if (!type)
 199     gtk_container_add (GTK_CONTAINER (buildable), GTK_WIDGET (child));
 200   else
 201     GTK_BUILDER_WARN_INVALID_CHILD_TYPE (GTK_FRAME (buildable), type);
 202 }
 203
 204 static void
 205 gtk_frame_init (GtkFrame *frame)
 206 {
 207   GtkFramePriv *priv;
 208
 209   frame->priv = G_TYPE_INSTANCE_GET_PRIVATE (frame,
 210                                              GTK_TYPE_FRAME,
 211                                              GtkFramePriv);
 212   priv = frame->priv;
 213
 214   priv->label_widget = NULL;
 215   priv->shadow_type = GTK_SHADOW_ETCHED_IN;
 216   priv->label_xalign = 0.0;
 217   priv->label_yalign = 0.5;
 218 }
 219
 220 static void
 221 gtk_frame_set_property (GObject         *object,
 222                         guint            prop_id,
 223                         const GValue    *value,
 224                         GParamSpec      *pspec)
 225 {
 226   GtkFrame *frame = GTK_FRAME (object);
 227   GtkFramePriv *priv = frame->priv;
 228
 229   switch (prop_id)
 230     {
 231     case PROP_LABEL:
 232       gtk_frame_set_label (frame, g_value_get_string (value));
 233       break;
 234     case PROP_LABEL_XALIGN:
 235       gtk_frame_set_label_align (frame, g_value_get_float (value),
 236                                  priv->label_yalign);
 237       break;
 238     case PROP_LABEL_YALIGN:
 239       gtk_frame_set_label_align (frame, priv->label_xalign,
 240                                  g_value_get_float (value));
 241       break;
 242     case PROP_SHADOW:
 243     case PROP_SHADOW_TYPE:
 244       gtk_frame_set_shadow_type (frame, g_value_get_enum (value));
 245       break;
 246     case PROP_LABEL_WIDGET:
 247       gtk_frame_set_label_widget (frame, g_value_get_object (value));
 248       break;
 249     default:
 250       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 251       break;
 252     }
 253 }
 254
 255 static void
 256 gtk_frame_get_property (GObject         *object,
 257                         guint            prop_id,
 258                         GValue          *value,
 259                         GParamSpec      *pspec)
 260 {
 261   GtkFrame *frame = GTK_FRAME (object);
 262   GtkFramePriv *priv = frame->priv;
 263
 264   switch (prop_id)
 265     {
 266     case PROP_LABEL:
 267       g_value_set_string (value, gtk_frame_get_label (frame));
 268       break;
 269     case PROP_LABEL_XALIGN:
 270       g_value_set_float (value, priv->label_xalign);
 271       break;
 272     case PROP_LABEL_YALIGN:
 273       g_value_set_float (value, priv->label_yalign);
 274       break;
 275     case PROP_SHADOW:
 276     case PROP_SHADOW_TYPE:
 277       g_value_set_enum (value, priv->shadow_type);
 278       break;
 279     case PROP_LABEL_WIDGET:
 280       g_value_set_object (value,
 281                           priv->label_widget ?
 282                           G_OBJECT (priv->label_widget) : NULL);
 283       break;
 284     default:
 285       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 286       break;
 287     }
 288 }
 289
 290 /**
 291  * gtk_frame_new:
 292  * @label: the text to use as the label of the frame
 293  *
 294  * Creates a new #GtkFrame, with optional label @label.
 295  * If @label is %NULL, the label is omitted.
 296  *
 297  * Return value: a new #GtkFrame widget
 298  **/
 299 GtkWidget*
 300 gtk_frame_new (const gchar *label)
 301 {
 302   return g_object_new (GTK_TYPE_FRAME, "label", label, NULL);
 303 }
 304
 305 static void
 306 gtk_frame_remove (GtkContainer *container,
 307                   GtkWidget    *child)
 308 {
 309   GtkFrame *frame = GTK_FRAME (container);
 310   GtkFramePriv *priv = frame->priv;
 311
 312   if (priv->label_widget == child)
 313     gtk_frame_set_label_widget (frame, NULL);
 314   else
 315     GTK_CONTAINER_CLASS (gtk_frame_parent_class)->remove (container, child);
 316 }
 317
 318 static void
 319 gtk_frame_forall (GtkContainer *container,
 320                   gboolean      include_internals,
 321                   GtkCallback   callback,
 322                   gpointer      callback_data)
 323 {
 324   GtkBin *bin = GTK_BIN (container);
 325   GtkFrame *frame = GTK_FRAME (container);
 326   GtkFramePriv *priv = frame->priv;
 327   GtkWidget *child;
 328
 329   child = gtk_bin_get_child (bin);
 330   if (child)
 331     (* callback) (child, callback_data);
 332
 333   if (priv->label_widget)
 334     (* callback) (priv->label_widget, callback_data);
 335 }
 336
 337 /**
 338  * gtk_frame_set_label:
 339  * @frame: a #GtkFrame
 340  * @label: (allow-none): the text to use as the label of the frame
 341  *
 342  * Sets the text of the label. If @label is %NULL,
 343  * the current label is removed.
 344  **/
 345 void
 346 gtk_frame_set_label (GtkFrame *frame,
 347                      const gchar *label)
 348 {
 349   g_return_if_fail (GTK_IS_FRAME (frame));
 350
 351   if (!label)
 352     {
 353       gtk_frame_set_label_widget (frame, NULL);
 354     }
 355   else
 356     {
 357       GtkWidget *child = gtk_label_new (label);
 358       gtk_widget_show (child);
 359
 360       gtk_frame_set_label_widget (frame, child);
 361     }
 362 }
 363
 364 /**
 365  * gtk_frame_get_label:
 366  * @frame: a #GtkFrame
 367  *
 368  * If the frame's label widget is a #GtkLabel, returns the
 369  * text in the label widget. (The frame will have a #GtkLabel
 370  * for the label widget if a non-%NULL argument was passed
 371  * to gtk_frame_new().)
 372  *
 373  * Return value: the text in the label, or %NULL if there
 374  *               was no label widget or the lable widget was not
 375  *               a #GtkLabel. This string is owned by GTK+ and
 376  *               must not be modified or freed.
 377  **/
 378 G_CONST_RETURN gchar *
 379 gtk_frame_get_label (GtkFrame *frame)
 380 {
 381   GtkFramePriv *priv;
 382
 383   g_return_val_if_fail (GTK_IS_FRAME (frame), NULL);
 384
 385   priv = frame->priv;
 386
 387   if (GTK_IS_LABEL (priv->label_widget))
 388     return gtk_label_get_text (GTK_LABEL (priv->label_widget));
 389   else
 390     return NULL;
 391 }
 392
 393 /**
 394  * gtk_frame_set_label_widget:
 395  * @frame: a #GtkFrame
 396  * @label_widget: the new label widget
 397  *
 398  * Sets the label widget for the frame. This is the widget that
 399  * will appear embedded in the top edge of the frame as a
 400  * title.
 401  **/
 402 void
 403 gtk_frame_set_label_widget (GtkFrame  *frame,
 404                             GtkWidget *label_widget)
 405 {
 406   GtkFramePriv *priv;
 407   gboolean need_resize = FALSE;
 408
 409   g_return_if_fail (GTK_IS_FRAME (frame));
 410   g_return_if_fail (label_widget == NULL || GTK_IS_WIDGET (label_widget));
 411   g_return_if_fail (label_widget == NULL || label_widget->parent == NULL);
 412
 413   priv = frame->priv;
 414
 415   if (priv->label_widget == label_widget)
 416     return;
 417
 418   if (priv->label_widget)
 419     {
 420       need_resize = gtk_widget_get_visible (priv->label_widget);
 421       gtk_widget_unparent (priv->label_widget);
 422     }
 423
 424   priv->label_widget = label_widget;
 425
 426   if (label_widget)
 427     {
 428       priv->label_widget = label_widget;
 429       gtk_widget_set_parent (label_widget, GTK_WIDGET (frame));
 430       need_resize |= gtk_widget_get_visible (label_widget);
 431     }
 432
 433   if (gtk_widget_get_visible (GTK_WIDGET (frame)) && need_resize)
 434     gtk_widget_queue_resize (GTK_WIDGET (frame));
 435
 436   g_object_freeze_notify (G_OBJECT (frame));
 437   g_object_notify (G_OBJECT (frame), "label-widget");
 438   g_object_notify (G_OBJECT (frame), "label");
 439   g_object_thaw_notify (G_OBJECT (frame));
 440 }
 441
 442 /**
 443  * gtk_frame_get_label_widget:
 444  * @frame: a #GtkFrame
 445  *
 446  * Retrieves the label widget for the frame. See
 447  * gtk_frame_set_label_widget().
 448  *
 449  * Return value: the label widget, or %NULL if there is none.
 450  **/
 451 GtkWidget *
 452 gtk_frame_get_label_widget (GtkFrame *frame)
 453 {
 454   g_return_val_if_fail (GTK_IS_FRAME (frame), NULL);
 455
 456   return frame->priv->label_widget;
 457 }
 458
 459 /**
 460  * gtk_frame_set_label_align:
 461  * @frame: a #GtkFrame
 462  * @xalign: The position of the label along the top edge
 463  *   of the widget. A value of 0.0 represents left alignment;
 464  *   1.0 represents right alignment.
 465  * @yalign: The y alignment of the label. A value of 0.0 aligns under
 466  *   the frame; 1.0 aligns above the frame. If the values are exactly
 467  *   0.0 or 1.0 the gap in the frame won't be painted because the label
 468  *   will be completely above or below the frame.
 469  *
 470  * Sets the alignment of the frame widget's label. The
 471  * default values for a newly created frame are 0.0 and 0.5.
 472  **/
 473 void
 474 gtk_frame_set_label_align (GtkFrame *frame,
 475                            gfloat    xalign,
 476                            gfloat    yalign)
 477 {
 478   GtkFramePriv *priv;
 479
 480   g_return_if_fail (GTK_IS_FRAME (frame));
 481
 482   priv = frame->priv;
 483
 484   xalign = CLAMP (xalign, 0.0, 1.0);
 485   yalign = CLAMP (yalign, 0.0, 1.0);
 486
 487   g_object_freeze_notify (G_OBJECT (frame));
 488   if (xalign != priv->label_xalign)
 489     {
 490       priv->label_xalign = xalign;
 491       g_object_notify (G_OBJECT (frame), "label-xalign");
 492     }
 493
 494   if (yalign != priv->label_yalign)
 495     {
 496       priv->label_yalign = yalign;
 497       g_object_notify (G_OBJECT (frame), "label-yalign");
 498     }
 499
 500   g_object_thaw_notify (G_OBJECT (frame));
 501   gtk_widget_queue_resize (GTK_WIDGET (frame));
 502 }
 503
 504 /**
 505  * gtk_frame_get_label_align:
 506  * @frame: a #GtkFrame
 507  * @xalign: (allow-none): location to store X alignment of frame's label, or %NULL
 508  * @yalign: (allow-none): location to store X alignment of frame's label, or %NULL
 509  *
 510  * Retrieves the X and Y alignment of the frame's label. See
 511  * gtk_frame_set_label_align().
 512  **/
 513 void
 514 gtk_frame_get_label_align (GtkFrame *frame,
 515                            gfloat   *xalign,
 516                            gfloat   *yalign)
 517 {
 518   GtkFramePriv *priv;
 519
 520   g_return_if_fail (GTK_IS_FRAME (frame));
 521
 522   priv = frame->priv;
 523
 524   if (xalign)
 525     *xalign = priv->label_xalign;
 526   if (yalign)
 527     *yalign = priv->label_yalign;
 528 }
 529
 530 /**
 531  * gtk_frame_set_shadow_type:
 532  * @frame: a #GtkFrame
 533  * @type: the new #GtkShadowType
 534  *
 535  * Sets the shadow type for @frame.
 536  **/
 537 void
 538 gtk_frame_set_shadow_type (GtkFrame      *frame,
 539                            GtkShadowType  type)
 540 {
 541   GtkFramePriv *priv;
 542   GtkWidget *widget;
 543
 544   g_return_if_fail (GTK_IS_FRAME (frame));
 545
 546   priv = frame->priv;
 547
 548   if ((GtkShadowType) priv->shadow_type != type)
 549     {
 550       widget = GTK_WIDGET (frame);
 551       priv->shadow_type = type;
 552       g_object_notify (G_OBJECT (frame), "shadow-type");
 553
 554       if (gtk_widget_is_drawable (widget))
 555         {
 556           gtk_widget_queue_draw (widget);
 557         }
 558
 559       gtk_widget_queue_resize (widget);
 560     }
 561 }
 562
 563 /**
 564  * gtk_frame_get_shadow_type:
 565  * @frame: a #GtkFrame
 566  *
 567  * Retrieves the shadow type of the frame. See
 568  * gtk_frame_set_shadow_type().
 569  *
 570  * Return value: the current shadow type of the frame.
 571  **/
 572 GtkShadowType
 573 gtk_frame_get_shadow_type (GtkFrame *frame)
 574 {
 575   g_return_val_if_fail (GTK_IS_FRAME (frame), GTK_SHADOW_ETCHED_IN);
 576
 577   return frame->priv->shadow_type;
 578 }
 579
 580 static void
 581 gtk_frame_paint (GtkWidget    *widget,
 582                  GdkRectangle *area)
 583 {
 584   GtkFrame *frame;
 585   GtkFramePriv *priv;
 586   gint x, y, width, height;
 587
 588   if (gtk_widget_is_drawable (widget))
 589     {
 590       frame = GTK_FRAME (widget);
 591       priv = frame->priv;
 592
 593       x = priv->child_allocation.x - widget->style->xthickness;
 594       y = priv->child_allocation.y - widget->style->ythickness;
 595       width = priv->child_allocation.width + 2 * widget->style->xthickness;
 596       height =  priv->child_allocation.height + 2 * widget->style->ythickness;
 597
 598       if (priv->label_widget)
 599         {
 600           GtkRequisition child_requisition;
 601           gfloat xalign;
 602           gint height_extra;
 603           gint x2;
 604
 605           gtk_widget_get_child_requisition (priv->label_widget, &child_requisition);
 606
 607           if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR)
 608             xalign = priv->label_xalign;
 609           else
 610             xalign = 1 - priv->label_xalign;
 611
 612           height_extra = MAX (0, child_requisition.height - widget->style->ythickness)
 613             - priv->label_yalign * child_requisition.height;
 614           y -= height_extra;
 615           height += height_extra;
 616
 617           x2 = widget->style->xthickness + (priv->child_allocation.width - child_requisition.width - 2 * LABEL_PAD - 2 * LABEL_SIDE_PAD) * xalign + LABEL_SIDE_PAD;
 618
 619           /* If the label is completely over or under the frame we can omit the gap */
 620           if (priv->label_yalign == 0.0 || priv->label_yalign == 1.0)
 621             gtk_paint_shadow (widget->style, widget->window,
 622                               widget->state, priv->shadow_type,
 623                               area, widget, "frame",
 624                               x, y, width, height);
 625           else
 626             gtk_paint_shadow_gap (widget->style, widget->window,
 627                                   widget->state, priv->shadow_type,
 628                                   area, widget, "frame",
 629                                   x, y, width, height,
 630                                   GTK_POS_TOP,
 631                                   x2, child_requisition.width + 2 * LABEL_PAD);
 632         }
 633        else
 634          gtk_paint_shadow (widget->style, widget->window,
 635                            widget->state, priv->shadow_type,
 636                            area, widget, "frame",
 637                            x, y, width, height);
 638     }
 639 }
 640
 641 static gboolean
 642 gtk_frame_expose (GtkWidget      *widget,
 643                   GdkEventExpose *event)
 644 {
 645   if (gtk_widget_is_drawable (widget))
 646     {
 647       gtk_frame_paint (widget, &event->area);
 648
 649       GTK_WIDGET_CLASS (gtk_frame_parent_class)->expose_event (widget, event);
 650     }
 651
 652   return FALSE;
 653 }
 654
 655 static void
 656 gtk_frame_size_allocate (GtkWidget     *widget,
 657                          GtkAllocation *allocation)
 658 {
 659   GtkFrame *frame = GTK_FRAME (widget);
 660   GtkFramePriv *priv = frame->priv;
 661   GtkBin *bin = GTK_BIN (widget);
 662   GtkAllocation new_allocation;
 663   GtkWidget *child;
 664
 665   widget->allocation = *allocation;
 666
 667   gtk_frame_compute_child_allocation (frame, &new_allocation);
 668
 669   /* If the child allocation changed, that means that the frame is drawn
 670    * in a new place, so we must redraw the entire widget.
 671    */
 672   if (gtk_widget_get_mapped (widget)
 673 #if 0
 674       &&
 675       (new_allocation.x != priv->child_allocation.x ||
 676        new_allocation.y != priv->child_allocation.y ||
 677        new_allocation.width != priv->child_allocation.width ||
 678        new_allocation.height != priv->child_allocation.height)
 679 #endif
 680      )
 681     gdk_window_invalidate_rect (widget->window, &widget->allocation, FALSE);
 682
 683   child = gtk_bin_get_child (bin);
 684   if (child && gtk_widget_get_visible (child))
 685     gtk_widget_size_allocate (child, &new_allocation);
 686
 687   priv->child_allocation = new_allocation;
 688
 689   if (priv->label_widget && gtk_widget_get_visible (priv->label_widget))
 690     {
 691       GtkRequisition child_requisition;
 692       GtkAllocation child_allocation;
 693       gfloat xalign;
 694
 695       gtk_widget_get_child_requisition (priv->label_widget, &child_requisition);
 696
 697       if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR)
 698         xalign = priv->label_xalign;
 699       else
 700         xalign = 1 - priv->label_xalign;
 701
 702       child_allocation.x = priv->child_allocation.x + LABEL_SIDE_PAD +
 703         (priv->child_allocation.width - child_requisition.width - 2 * LABEL_PAD - 2 * LABEL_SIDE_PAD) * xalign + LABEL_PAD;
 704       child_allocation.width = MIN (child_requisition.width, new_allocation.width - 2 * LABEL_PAD - 2 * LABEL_SIDE_PAD);
 705
 706       child_allocation.y = priv->child_allocation.y - MAX (child_requisition.height, widget->style->ythickness);
 707       child_allocation.height = child_requisition.height;
 708
 709       gtk_widget_size_allocate (priv->label_widget, &child_allocation);
 710     }
 711 }
 712
 713 static void
 714 gtk_frame_compute_child_allocation (GtkFrame      *frame,
 715                                     GtkAllocation *child_allocation)
 716 {
 717   g_return_if_fail (GTK_IS_FRAME (frame));
 718   g_return_if_fail (child_allocation != NULL);
 719
 720   GTK_FRAME_GET_CLASS (frame)->compute_child_allocation (frame, child_allocation);
 721 }
 722
 723 static void
 724 gtk_frame_real_compute_child_allocation (GtkFrame      *frame,
 725                                          GtkAllocation *child_allocation)
 726 {
 727   GtkFramePriv *priv = frame->priv;
 728   GtkWidget *widget = GTK_WIDGET (frame);
 729   GtkAllocation *allocation = &widget->allocation;
 730   GtkRequisition child_requisition;
 731   gint top_margin;
 732   guint border_width;
 733
 734   if (priv->label_widget)
 735     {
 736       gtk_widget_get_child_requisition (priv->label_widget, &child_requisition);
 737       top_margin = MAX (child_requisition.height, widget->style->ythickness);
 738     }
 739   else
 740     top_margin = widget->style->ythickness;
 741
 742   border_width = gtk_container_get_border_width (GTK_CONTAINER (frame));
 743
 744   child_allocation->x = border_width + widget->style->xthickness;
 745   child_allocation->width = MAX(1, (gint)allocation->width - child_allocation->x * 2);
 746
 747   child_allocation->y = border_width + top_margin;
 748   child_allocation->height = MAX (1, ((gint)allocation->height - child_allocation->y -
 749                                       border_width -
 750                                       (gint)widget->style->ythickness));
 751
 752   child_allocation->x += allocation->x;
 753   child_allocation->y += allocation->y;
 754 }
 755
 756 static void
 757 gtk_frame_get_size (GtkSizeRequest *request,
 758                     GtkOrientation  orientation,
 759                     gint           *minimum_size,
 760                     gint           *natural_size)
 761 {
 762   GtkWidget *widget = GTK_WIDGET (request);
 763   GtkWidget *child;
 764   GtkFrame *frame = GTK_FRAME (widget);
 765   GtkFramePriv *priv = frame->priv;
 766   GtkBin *bin = GTK_BIN (widget);
 767   gint child_min, child_nat;
 768   gint minimum, natural;
 769   guint border_width;
 770
 771   if (priv->label_widget && gtk_widget_get_visible (priv->label_widget))
 772     {
 773       if (orientation == GTK_ORIENTATION_HORIZONTAL)
 774         {
 775           gtk_size_request_get_width (GTK_SIZE_REQUEST (priv->label_widget),
 776                                       &child_min, &child_nat);
 777           minimum = child_min + 2 * LABEL_PAD + 2 * LABEL_SIDE_PAD;
 778           natural = child_nat + 2 * LABEL_PAD + 2 * LABEL_SIDE_PAD;
 779         }
 780       else
 781         {
 782           gtk_size_request_get_height (GTK_SIZE_REQUEST (priv->label_widget),
 783                                        &child_min, &child_nat);
 784           minimum = MAX (0, child_min - widget->style->ythickness);
 785           natural = MAX (0, child_nat - widget->style->ythickness);
 786         }
 787     }
 788   else
 789     {
 790       minimum = 0;
 791       natural = 0;
 792     }
 793
 794   child = gtk_bin_get_child (bin);
 795   if (child && gtk_widget_get_visible (child))
 796     {
 797       if (orientation == GTK_ORIENTATION_HORIZONTAL)
 798         {
 799           gtk_size_request_get_width (GTK_SIZE_REQUEST (child),
 800                                       &child_min, &child_nat);
 801           minimum = MAX (minimum, child_min);
 802           natural = MAX (natural, child_nat);
 803         }
 804       else
 805         {
 806           gtk_size_request_get_height (GTK_SIZE_REQUEST (child),
 807                                        &child_min, &child_nat);
 808           minimum += child_min;
 809           natural += child_nat;
 810         }
 811     }
 812
 813   border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
 814
 815   if (orientation == GTK_ORIENTATION_HORIZONTAL)
 816     {
 817       minimum += (border_width + GTK_WIDGET (widget)->style->xthickness) * 2;
 818       natural += (border_width + GTK_WIDGET (widget)->style->xthickness) * 2;
 819     }
 820   else
 821     {
 822       minimum += (border_width + GTK_WIDGET (widget)->style->ythickness) * 2;
 823       natural += (border_width + GTK_WIDGET (widget)->style->ythickness) * 2;
 824     }
 825
 826  if (minimum_size)
 827     *minimum_size = minimum;
 828
 829   if (natural_size)
 830     *natural_size = natural;
 831 }
 832
 833 static void
 834 gtk_frame_get_width (GtkSizeRequest *widget,
 835                      gint           *minimum_size,
 836                      gint           *natural_size)
 837 {
 838   gtk_frame_get_size (widget, GTK_ORIENTATION_HORIZONTAL, minimum_size, natural_size);
 839 }
 840
 841 static void
 842 gtk_frame_get_height (GtkSizeRequest *widget,
 843                       gint           *minimum_size,
 844                       gint           *natural_size)
 845 {
 846   gtk_frame_get_size (widget, GTK_ORIENTATION_VERTICAL, minimum_size, natural_size);
 847 }
 848
 849 static void
 850 gtk_frame_size_request_init (GtkSizeRequestIface *iface)
 851 {
 852   iface->get_width = gtk_frame_get_width;
 853   iface->get_height = gtk_frame_get_height;
 854 }