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