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 _GtkFramePrivate
  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   GtkAllocation label_allocation;
  51 };
  52
  53 enum {
  54   PROP_0,
  55   PROP_LABEL,
  56   PROP_LABEL_XALIGN,
  57   PROP_LABEL_YALIGN,
  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 static void gtk_frame_get_height_for_width          (GtkSizeRequest      *layout,
 103                                                      gint                 width,
 104                                                      gint                *minimum_height,
 105                                                      gint                *natural_height);
 106 static void gtk_frame_get_width_for_height          (GtkSizeRequest      *layout,
 107                                                      gint                 width,
 108                                                      gint                *minimum_height,
 109                                                      gint                *natural_height);
 110
 111
 112 G_DEFINE_TYPE_WITH_CODE (GtkFrame, gtk_frame, GTK_TYPE_BIN,
 113                          G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
 114                                                 gtk_frame_buildable_init)
 115                          G_IMPLEMENT_INTERFACE (GTK_TYPE_SIZE_REQUEST,
 116                                                 gtk_frame_size_request_init))
 117
 118 static void
 119 gtk_frame_class_init (GtkFrameClass *class)
 120 {
 121   GObjectClass *gobject_class;
 122   GtkWidgetClass *widget_class;
 123   GtkContainerClass *container_class;
 124
 125   gobject_class = (GObjectClass*) class;
 126   widget_class = GTK_WIDGET_CLASS (class);
 127   container_class = GTK_CONTAINER_CLASS (class);
 128
 129   gobject_class->set_property = gtk_frame_set_property;
 130   gobject_class->get_property = gtk_frame_get_property;
 131
 132   g_object_class_install_property (gobject_class,
 133                                    PROP_LABEL,
 134                                    g_param_spec_string ("label",
 135                                                         P_("Label"),
 136                                                         P_("Text of the frame's label"),
 137                                                         NULL,
 138                                                         GTK_PARAM_READABLE |
 139                                                         GTK_PARAM_WRITABLE));
 140   g_object_class_install_property (gobject_class,
 141                                    PROP_LABEL_XALIGN,
 142                                    g_param_spec_float ("label-xalign",
 143                                                        P_("Label xalign"),
 144                                                        P_("The horizontal alignment of the label"),
 145                                                        0.0,
 146                                                        1.0,
 147                                                        0.0,
 148                                                        GTK_PARAM_READWRITE));
 149   g_object_class_install_property (gobject_class,
 150                                    PROP_LABEL_YALIGN,
 151                                    g_param_spec_float ("label-yalign",
 152                                                        P_("Label yalign"),
 153                                                        P_("The vertical alignment of the label"),
 154                                                        0.0,
 155                                                        1.0,
 156                                                        0.5,
 157                                                        GTK_PARAM_READWRITE));
 158   g_object_class_install_property (gobject_class,
 159                                    PROP_SHADOW_TYPE,
 160                                    g_param_spec_enum ("shadow-type",
 161                                                       P_("Frame shadow"),
 162                                                       P_("Appearance of the frame border"),
 163                                                       GTK_TYPE_SHADOW_TYPE,
 164                                                       GTK_SHADOW_ETCHED_IN,
 165                                                       GTK_PARAM_READWRITE));
 166
 167   g_object_class_install_property (gobject_class,
 168                                    PROP_LABEL_WIDGET,
 169                                    g_param_spec_object ("label-widget",
 170                                                         P_("Label widget"),
 171                                                         P_("A widget to display in place of the usual frame label"),
 172                                                         GTK_TYPE_WIDGET,
 173                                                         GTK_PARAM_READWRITE));
 174
 175   widget_class->expose_event = gtk_frame_expose;
 176   widget_class->size_allocate = gtk_frame_size_allocate;
 177
 178   container_class->remove = gtk_frame_remove;
 179   container_class->forall = gtk_frame_forall;
 180
 181   class->compute_child_allocation = gtk_frame_real_compute_child_allocation;
 182
 183   g_type_class_add_private (class, sizeof (GtkFramePrivate));
 184 }
 185
 186 static void
 187 gtk_frame_buildable_init (GtkBuildableIface *iface)
 188 {
 189   iface->add_child = gtk_frame_buildable_add_child;
 190 }
 191
 192 static void
 193 gtk_frame_buildable_add_child (GtkBuildable *buildable,
 194                                GtkBuilder   *builder,
 195                                GObject      *child,
 196                                const gchar  *type)
 197 {
 198   if (type && strcmp (type, "label") == 0)
 199     gtk_frame_set_label_widget (GTK_FRAME (buildable), GTK_WIDGET (child));
 200   else if (!type)
 201     gtk_container_add (GTK_CONTAINER (buildable), GTK_WIDGET (child));
 202   else
 203     GTK_BUILDER_WARN_INVALID_CHILD_TYPE (GTK_FRAME (buildable), type);
 204 }
 205
 206 static void
 207 gtk_frame_init (GtkFrame *frame)
 208 {
 209   GtkFramePrivate *priv;
 210
 211   frame->priv = G_TYPE_INSTANCE_GET_PRIVATE (frame,
 212                                              GTK_TYPE_FRAME,
 213                                              GtkFramePrivate);
 214   priv = frame->priv;
 215
 216   priv->label_widget = NULL;
 217   priv->shadow_type = GTK_SHADOW_ETCHED_IN;
 218   priv->label_xalign = 0.0;
 219   priv->label_yalign = 0.5;
 220 }
 221
 222 static void
 223 gtk_frame_set_property (GObject         *object,
 224                         guint            prop_id,
 225                         const GValue    *value,
 226                         GParamSpec      *pspec)
 227 {
 228   GtkFrame *frame = GTK_FRAME (object);
 229   GtkFramePrivate *priv = frame->priv;
 230
 231   switch (prop_id)
 232     {
 233     case PROP_LABEL:
 234       gtk_frame_set_label (frame, g_value_get_string (value));
 235       break;
 236     case PROP_LABEL_XALIGN:
 237       gtk_frame_set_label_align (frame, g_value_get_float (value),
 238                                  priv->label_yalign);
 239       break;
 240     case PROP_LABEL_YALIGN:
 241       gtk_frame_set_label_align (frame, priv->label_xalign,
 242                                  g_value_get_float (value));
 243       break;
 244     case PROP_SHADOW_TYPE:
 245       gtk_frame_set_shadow_type (frame, g_value_get_enum (value));
 246       break;
 247     case PROP_LABEL_WIDGET:
 248       gtk_frame_set_label_widget (frame, g_value_get_object (value));
 249       break;
 250     default:
 251       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 252       break;
 253     }
 254 }
 255
 256 static void
 257 gtk_frame_get_property (GObject         *object,
 258                         guint            prop_id,
 259                         GValue          *value,
 260                         GParamSpec      *pspec)
 261 {
 262   GtkFrame *frame = GTK_FRAME (object);
 263   GtkFramePrivate *priv = frame->priv;
 264
 265   switch (prop_id)
 266     {
 267     case PROP_LABEL:
 268       g_value_set_string (value, gtk_frame_get_label (frame));
 269       break;
 270     case PROP_LABEL_XALIGN:
 271       g_value_set_float (value, priv->label_xalign);
 272       break;
 273     case PROP_LABEL_YALIGN:
 274       g_value_set_float (value, priv->label_yalign);
 275       break;
 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   GtkFramePrivate *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   GtkFramePrivate *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   GtkFramePrivate *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   GtkFramePrivate *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 || gtk_widget_get_parent (label_widget) == 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   GtkFramePrivate *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   GtkFramePrivate *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   GtkFramePrivate *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   GtkFramePrivate *priv;
 586   GtkStateType state;
 587   GtkStyle *style;
 588   GdkWindow *window;
 589   gint x, y, width, height;
 590
 591   if (gtk_widget_is_drawable (widget))
 592     {
 593       frame = GTK_FRAME (widget);
 594       priv = frame->priv;
 595
 596       style = gtk_widget_get_style (widget);
 597       window = gtk_widget_get_window (widget);
 598       state = gtk_widget_get_state (widget);
 599
 600       x = priv->child_allocation.x - style->xthickness;
 601       y = priv->child_allocation.y - style->ythickness;
 602       width = priv->child_allocation.width + 2 * style->xthickness;
 603       height =  priv->child_allocation.height + 2 * style->ythickness;
 604
 605       if (priv->label_widget)
 606         {
 607           gfloat xalign;
 608           gint height_extra;
 609           gint x2;
 610
 611           if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR)
 612             xalign = priv->label_xalign;
 613           else
 614             xalign = 1 - priv->label_xalign;
 615
 616           height_extra = MAX (0, priv->label_allocation.height - style->ythickness)
 617                          - priv->label_yalign * priv->label_allocation.height;
 618           y -= height_extra;
 619           height += height_extra;
 620
 621           x2 = style->xthickness + (priv->child_allocation.width - priv->label_allocation.width - 2 * LABEL_PAD - 2 * LABEL_SIDE_PAD) * xalign + LABEL_SIDE_PAD;
 622           /* If the label is completely over or under the frame we can omit the gap */
 623           if (priv->label_yalign == 0.0 || priv->label_yalign == 1.0)
 624             gtk_paint_shadow (style, window,
 625                               state, priv->shadow_type,
 626                               area, widget, "frame",
 627                               x, y, width, height);
 628           else
 629             gtk_paint_shadow_gap (style, window,
 630                                   state, priv->shadow_type,
 631                                   area, widget, "frame",
 632                                   x, y, width, height,
 633                                   GTK_POS_TOP,
 634                                   x2, priv->label_allocation.width + 2 * LABEL_PAD);
 635         }
 636        else
 637          gtk_paint_shadow (style, window,
 638                            state, priv->shadow_type,
 639                            area, widget, "frame",
 640                            x, y, width, height);
 641     }
 642 }
 643
 644 static gboolean
 645 gtk_frame_expose (GtkWidget      *widget,
 646                   GdkEventExpose *event)
 647 {
 648   if (gtk_widget_is_drawable (widget))
 649     {
 650       gtk_frame_paint (widget, &event->area);
 651
 652       GTK_WIDGET_CLASS (gtk_frame_parent_class)->expose_event (widget, event);
 653     }
 654
 655   return FALSE;
 656 }
 657
 658 static void
 659 gtk_frame_size_allocate (GtkWidget     *widget,
 660                          GtkAllocation *allocation)
 661 {
 662   GtkFrame *frame = GTK_FRAME (widget);
 663   GtkFramePrivate *priv = frame->priv;
 664   GtkBin *bin = GTK_BIN (widget);
 665   GtkAllocation new_allocation;
 666   GtkWidget *child;
 667
 668   gtk_widget_set_allocation (widget, allocation);
 669
 670   gtk_frame_compute_child_allocation (frame, &new_allocation);
 671
 672   /* If the child allocation changed, that means that the frame is drawn
 673    * in a new place, so we must redraw the entire widget.
 674    */
 675   if (gtk_widget_get_mapped (widget))
 676     {
 677       gdk_window_invalidate_rect (gtk_widget_get_window (widget), allocation, FALSE);
 678     }
 679
 680   child = gtk_bin_get_child (bin);
 681   if (child && gtk_widget_get_visible (child))
 682     gtk_widget_size_allocate (child, &new_allocation);
 683
 684   priv->child_allocation = new_allocation;
 685
 686   if (priv->label_widget && gtk_widget_get_visible (priv->label_widget))
 687     {
 688       GtkStyle *style;
 689       gint nat_width, width, height;
 690       gfloat xalign;
 691
 692       style = gtk_widget_get_style (widget);
 693
 694       if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR)
 695         xalign = priv->label_xalign;
 696       else
 697         xalign = 1 - priv->label_xalign;
 698
 699       gtk_size_request_get_width (GTK_SIZE_REQUEST (priv->label_widget), NULL, &nat_width);
 700       width = new_allocation.width - 2 * LABEL_PAD - 2 * LABEL_SIDE_PAD;
 701       width = MIN (width, nat_width);
 702
 703       gtk_size_request_get_height_for_width (GTK_SIZE_REQUEST (priv->label_widget), width,
 704                                              &height, NULL);
 705
 706
 707       priv->label_allocation.x = priv->child_allocation.x + LABEL_SIDE_PAD +
 708         (new_allocation.width - width - 2 * LABEL_PAD - 2 * LABEL_SIDE_PAD) * xalign + LABEL_PAD;
 709
 710       priv->label_allocation.width = width;
 711
 712       priv->label_allocation.y = priv->child_allocation.y - MAX (height, style->ythickness);
 713       priv->label_allocation.height = height;
 714
 715       gtk_widget_size_allocate (priv->label_widget, &priv->label_allocation);
 716     }
 717 }
 718
 719 static void
 720 gtk_frame_compute_child_allocation (GtkFrame      *frame,
 721                                     GtkAllocation *child_allocation)
 722 {
 723   g_return_if_fail (GTK_IS_FRAME (frame));
 724   g_return_if_fail (child_allocation != NULL);
 725
 726   GTK_FRAME_GET_CLASS (frame)->compute_child_allocation (frame, child_allocation);
 727 }
 728
 729 static void
 730 gtk_frame_real_compute_child_allocation (GtkFrame      *frame,
 731                                          GtkAllocation *child_allocation)
 732 {
 733   GtkFramePrivate *priv = frame->priv;
 734   GtkWidget *widget = GTK_WIDGET (frame);
 735   GtkAllocation allocation;
 736   GtkStyle *style;
 737   gint top_margin;
 738   guint border_width;
 739
 740   style = gtk_widget_get_style (widget);
 741
 742   gtk_widget_get_allocation (widget, &allocation);
 743
 744   border_width = gtk_container_get_border_width (GTK_CONTAINER (frame));
 745
 746   if (priv->label_widget)
 747     {
 748       gint nat_width, width, height;
 749
 750       gtk_size_request_get_width (GTK_SIZE_REQUEST (priv->label_widget), NULL, &nat_width);
 751
 752       width = allocation.width;
 753       width -= 2 * LABEL_PAD + 2 * LABEL_SIDE_PAD;
 754       width -= (border_width + style->xthickness) * 2;
 755
 756       width = MIN (width, nat_width);
 757
 758       gtk_size_request_get_height_for_width (GTK_SIZE_REQUEST (priv->label_widget), width,
 759                                              &height, NULL);
 760
 761       top_margin = MAX (height, style->ythickness);
 762     }
 763   else
 764     top_margin = style->ythickness;
 765
 766   child_allocation->x = border_width + style->xthickness;
 767   child_allocation->y = border_width + top_margin;
 768   child_allocation->width = MAX (1, (gint) allocation.width - child_allocation->x * 2);
 769   child_allocation->height = MAX (1, ((gint) allocation.height - child_allocation->y -
 770                                       border_width - (gint) style->ythickness));
 771
 772   child_allocation->x += allocation.x;
 773   child_allocation->y += allocation.y;
 774 }
 775
 776 static void
 777 gtk_frame_get_size (GtkSizeRequest *request,
 778                     GtkOrientation  orientation,
 779                     gint           *minimum_size,
 780                     gint           *natural_size)
 781 {
 782   GtkFrame *frame = GTK_FRAME (request);
 783   GtkFramePrivate *priv = frame->priv;
 784   GtkStyle *style;
 785   GtkWidget *widget = GTK_WIDGET (request);
 786   GtkWidget *child;
 787   GtkBin *bin = GTK_BIN (widget);
 788   gint child_min, child_nat;
 789   gint minimum, natural;
 790   guint border_width;
 791
 792   style = gtk_widget_get_style (widget);
 793
 794   if (priv->label_widget && gtk_widget_get_visible (priv->label_widget))
 795     {
 796       if (orientation == GTK_ORIENTATION_HORIZONTAL)
 797         {
 798           gtk_size_request_get_width (GTK_SIZE_REQUEST (priv->label_widget),
 799                                       &child_min, &child_nat);
 800           minimum = child_min + 2 * LABEL_PAD + 2 * LABEL_SIDE_PAD;
 801           natural = child_nat + 2 * LABEL_PAD + 2 * LABEL_SIDE_PAD;
 802         }
 803       else
 804         {
 805           gtk_size_request_get_height (GTK_SIZE_REQUEST (priv->label_widget),
 806                                        &child_min, &child_nat);
 807           minimum = MAX (0, child_min - style->ythickness);
 808           natural = MAX (0, child_nat - style->ythickness);
 809         }
 810     }
 811   else
 812     {
 813       minimum = 0;
 814       natural = 0;
 815     }
 816
 817   child = gtk_bin_get_child (bin);
 818   if (child && gtk_widget_get_visible (child))
 819     {
 820       if (orientation == GTK_ORIENTATION_HORIZONTAL)
 821         {
 822           gtk_size_request_get_width (GTK_SIZE_REQUEST (child),
 823                                       &child_min, &child_nat);
 824           minimum = MAX (minimum, child_min);
 825           natural = MAX (natural, child_nat);
 826         }
 827       else
 828         {
 829           gtk_size_request_get_height (GTK_SIZE_REQUEST (child),
 830                                        &child_min, &child_nat);
 831           minimum += child_min;
 832           natural += child_nat;
 833         }
 834     }
 835
 836   border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
 837
 838   if (orientation == GTK_ORIENTATION_HORIZONTAL)
 839     {
 840       minimum += (border_width + style->xthickness) * 2;
 841       natural += (border_width + style->xthickness) * 2;
 842     }
 843   else
 844     {
 845       minimum += (border_width + style->ythickness) * 2;
 846       natural += (border_width + style->ythickness) * 2;
 847     }
 848
 849  if (minimum_size)
 850     *minimum_size = minimum;
 851
 852   if (natural_size)
 853     *natural_size = natural;
 854 }
 855
 856 static void
 857 gtk_frame_get_width (GtkSizeRequest *widget,
 858                      gint           *minimum_size,
 859                      gint           *natural_size)
 860 {
 861   gtk_frame_get_size (widget, GTK_ORIENTATION_HORIZONTAL, minimum_size, natural_size);
 862 }
 863
 864 static void
 865 gtk_frame_get_height (GtkSizeRequest *widget,
 866                       gint           *minimum_size,
 867                       gint           *natural_size)
 868 {
 869   gtk_frame_get_size (widget, GTK_ORIENTATION_VERTICAL, minimum_size, natural_size);
 870 }
 871
 872
 873 static void
 874 gtk_frame_get_height_for_width (GtkSizeRequest *request,
 875                                 gint            width,
 876                                 gint           *minimum_height,
 877                                 gint           *natural_height)
 878 {
 879   GtkWidget *widget = GTK_WIDGET (request);
 880   GtkWidget *child;
 881   GtkFrame *frame = GTK_FRAME (widget);
 882   GtkFramePrivate *priv = frame->priv;
 883   GtkBin *bin = GTK_BIN (widget);
 884   GtkStyle *style;
 885   gint child_min, child_nat, label_width;
 886   gint minimum, natural;
 887   guint border_width;
 888
 889   style = gtk_widget_get_style (widget);
 890
 891   border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
 892   minimum      = (border_width + style->ythickness) * 2;
 893   natural      = (border_width + style->ythickness) * 2;
 894
 895   width -= (border_width + style->xthickness) * 2;
 896   label_width = width - 2 * LABEL_PAD + 2 * LABEL_SIDE_PAD;
 897
 898   if (priv->label_widget && gtk_widget_get_visible (priv->label_widget))
 899     {
 900       gtk_size_request_get_height_for_width (GTK_SIZE_REQUEST (priv->label_widget),
 901                                              label_width, &child_min, &child_nat);
 902       minimum += child_min;
 903       natural += child_nat;
 904     }
 905
 906   child = gtk_bin_get_child (bin);
 907   if (child && gtk_widget_get_visible (child))
 908     {
 909       gtk_size_request_get_height_for_width (GTK_SIZE_REQUEST (child),
 910                                              width, &child_min, &child_nat);
 911       minimum += child_min;
 912       natural += child_nat;
 913     }
 914
 915  if (minimum_height)
 916     *minimum_height = minimum;
 917
 918   if (natural_height)
 919     *natural_height = natural;
 920 }
 921
 922 static void
 923 gtk_frame_get_width_for_height (GtkSizeRequest *widget,
 924                                 gint       height,
 925                                 gint      *minimum_width,
 926                                 gint      *natural_width)
 927 {
 928   GTK_SIZE_REQUEST_GET_IFACE (widget)->get_width (widget, minimum_width, natural_width);
 929 }
 930
 931 static void
 932 gtk_frame_size_request_init (GtkSizeRequestIface *iface)
 933 {
 934   iface->get_width            = gtk_frame_get_width;
 935   iface->get_height           = gtk_frame_get_height;
 936   iface->get_height_for_width = gtk_frame_get_height_for_width;
 937   iface->get_width_for_height = gtk_frame_get_width_for_height;
 938 }