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, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 /*
  19  * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS
  20  * file for a list of people on the GTK+ Team.  See the ChangeLog
  21  * files for a list of changes.  These files are distributed with
  22  * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
  23  */
  24
  25 #include "config.h"
  26 #include <string.h>
  27 #include "gtkframe.h"
  28 #include "gtklabel.h"
  29 #include "gtkprivate.h"
  30 #include "gtktypebuiltins.h"
  31 #include "gtkintl.h"
  32 #include "gtkbuildable.h"
  33
  34 #include "a11y/gtkframeaccessible.h"
  35
  36 /**
  37  * SECTION:gtkframe
  38  * @Short_description: A bin with a decorative frame and optional label
  39  * @Title: GtkFrame
  40  *
  41  * The frame widget is a Bin that surrounds its child
  42  * with a decorative frame and an optional label.
  43  * If present, the label is drawn in a gap in the
  44  * top side of the frame. The position of the
  45  * label can be controlled with gtk_frame_set_label_align().
  46  *
  47  * <refsect2 id="GtkFrame-BUILDER-UI">
  48  * <title>GtkFrame as GtkBuildable</title>
  49  * <para>
  50  * The GtkFrame implementation of the GtkBuildable interface
  51  * supports placing a child in the label position by specifying
  52  * "label" as the "type" attribute of a &lt;child&gt; element.
  53  * A normal content child can be specified without specifying
  54  * a &lt;child&gt; type attribute.
  55  * </para>
  56  * <example>
  57  * <title>A UI definition fragment with GtkFrame</title>
  58  * <programlisting><![CDATA[
  59  * <object class="GtkFrame">
  60  *   <child type="label">
  61  *     <object class="GtkLabel" id="frame-label"/>
  62  *   </child>
  63  *   <child>
  64  *     <object class="GtkEntry" id="frame-content"/>
  65  *   </child>
  66  * </object>
  67  * ]]></programlisting>
  68  * </example>
  69  * </refsect2>
  70  */
  71
  72
  73 #define LABEL_PAD 1
  74 #define LABEL_SIDE_PAD 2
  75
  76 struct _GtkFramePrivate
  77 {
  78   /* Properties */
  79   GtkWidget *label_widget;
  80
  81   gint16 shadow_type;
  82   gfloat label_xalign;
  83   gfloat label_yalign;
  84   /* Properties */
  85
  86   GtkAllocation child_allocation;
  87   GtkAllocation label_allocation;
  88 };
  89
  90 enum {
  91   PROP_0,
  92   PROP_LABEL,
  93   PROP_LABEL_XALIGN,
  94   PROP_LABEL_YALIGN,
  95   PROP_SHADOW_TYPE,
  96   PROP_LABEL_WIDGET
  97 };
  98
  99 static void gtk_frame_set_property (GObject      *object,
 100                                     guint         param_id,
 101                                     const GValue *value,
 102                                     GParamSpec   *pspec);
 103 static void gtk_frame_get_property (GObject     *object,
 104                                     guint        param_id,
 105                                     GValue      *value,
 106                                     GParamSpec  *pspec);
 107 static gboolean gtk_frame_draw      (GtkWidget      *widget,
 108                                      cairo_t        *cr);
 109 static void gtk_frame_size_allocate (GtkWidget      *widget,
 110                                      GtkAllocation  *allocation);
 111 static void gtk_frame_remove        (GtkContainer   *container,
 112                                      GtkWidget      *child);
 113 static void gtk_frame_forall        (GtkContainer   *container,
 114                                      gboolean        include_internals,
 115                                      GtkCallback     callback,
 116                                      gpointer        callback_data);
 117 static GtkWidgetPath * gtk_frame_get_path_for_child (GtkContainer *container,
 118                                                      GtkWidget    *child);
 119
 120 static void gtk_frame_compute_child_allocation      (GtkFrame      *frame,
 121                                                      GtkAllocation *child_allocation);
 122 static void gtk_frame_real_compute_child_allocation (GtkFrame      *frame,
 123                                                      GtkAllocation *child_allocation);
 124
 125 /* GtkBuildable */
 126 static void gtk_frame_buildable_init                (GtkBuildableIface *iface);
 127 static void gtk_frame_buildable_add_child           (GtkBuildable *buildable,
 128                                                      GtkBuilder   *builder,
 129                                                      GObject      *child,
 130                                                      const gchar  *type);
 131
 132 static void gtk_frame_get_preferred_width           (GtkWidget           *widget,
 133                                                      gint                *minimum_size,
 134                                                      gint                *natural_size);
 135 static void gtk_frame_get_preferred_height          (GtkWidget           *widget,
 136                                                      gint                *minimum_size,
 137                                                      gint                *natural_size);
 138 static void gtk_frame_get_preferred_height_for_width(GtkWidget           *layout,
 139                                                      gint                 width,
 140                                                      gint                *minimum_height,
 141                                                      gint                *natural_height);
 142 static void gtk_frame_get_preferred_width_for_height(GtkWidget           *layout,
 143                                                      gint                 width,
 144                                                      gint                *minimum_height,
 145                                                      gint                *natural_height);
 146
 147
 148 G_DEFINE_TYPE_WITH_CODE (GtkFrame, gtk_frame, GTK_TYPE_BIN,
 149                          G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
 150                                                 gtk_frame_buildable_init))
 151
 152 static void
 153 gtk_frame_class_init (GtkFrameClass *class)
 154 {
 155   GObjectClass *gobject_class;
 156   GtkWidgetClass *widget_class;
 157   GtkContainerClass *container_class;
 158
 159   gobject_class = (GObjectClass*) class;
 160   widget_class = GTK_WIDGET_CLASS (class);
 161   container_class = GTK_CONTAINER_CLASS (class);
 162
 163   gobject_class->set_property = gtk_frame_set_property;
 164   gobject_class->get_property = gtk_frame_get_property;
 165
 166   g_object_class_install_property (gobject_class,
 167                                    PROP_LABEL,
 168                                    g_param_spec_string ("label",
 169                                                         P_("Label"),
 170                                                         P_("Text of the frame's label"),
 171                                                         NULL,
 172                                                         GTK_PARAM_READABLE |
 173                                                         GTK_PARAM_WRITABLE));
 174   g_object_class_install_property (gobject_class,
 175                                    PROP_LABEL_XALIGN,
 176                                    g_param_spec_float ("label-xalign",
 177                                                        P_("Label xalign"),
 178                                                        P_("The horizontal alignment of the label"),
 179                                                        0.0,
 180                                                        1.0,
 181                                                        0.0,
 182                                                        GTK_PARAM_READWRITE));
 183   g_object_class_install_property (gobject_class,
 184                                    PROP_LABEL_YALIGN,
 185                                    g_param_spec_float ("label-yalign",
 186                                                        P_("Label yalign"),
 187                                                        P_("The vertical alignment of the label"),
 188                                                        0.0,
 189                                                        1.0,
 190                                                        0.5,
 191                                                        GTK_PARAM_READWRITE));
 192   g_object_class_install_property (gobject_class,
 193                                    PROP_SHADOW_TYPE,
 194                                    g_param_spec_enum ("shadow-type",
 195                                                       P_("Frame shadow"),
 196                                                       P_("Appearance of the frame border"),
 197                                                       GTK_TYPE_SHADOW_TYPE,
 198                                                       GTK_SHADOW_ETCHED_IN,
 199                                                       GTK_PARAM_READWRITE));
 200
 201   g_object_class_install_property (gobject_class,
 202                                    PROP_LABEL_WIDGET,
 203                                    g_param_spec_object ("label-widget",
 204                                                         P_("Label widget"),
 205                                                         P_("A widget to display in place of the usual frame label"),
 206                                                         GTK_TYPE_WIDGET,
 207                                                         GTK_PARAM_READWRITE));
 208
 209   widget_class->draw                           = gtk_frame_draw;
 210   widget_class->size_allocate                  = gtk_frame_size_allocate;
 211   widget_class->get_preferred_width            = gtk_frame_get_preferred_width;
 212   widget_class->get_preferred_height           = gtk_frame_get_preferred_height;
 213   widget_class->get_preferred_height_for_width = gtk_frame_get_preferred_height_for_width;
 214   widget_class->get_preferred_width_for_height = gtk_frame_get_preferred_width_for_height;
 215
 216   container_class->remove = gtk_frame_remove;
 217   container_class->forall = gtk_frame_forall;
 218   container_class->get_path_for_child = gtk_frame_get_path_for_child;
 219
 220   class->compute_child_allocation = gtk_frame_real_compute_child_allocation;
 221
 222   g_type_class_add_private (class, sizeof (GtkFramePrivate));
 223
 224   gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_FRAME_ACCESSIBLE);
 225 }
 226
 227 static void
 228 gtk_frame_buildable_init (GtkBuildableIface *iface)
 229 {
 230   iface->add_child = gtk_frame_buildable_add_child;
 231 }
 232
 233 static void
 234 gtk_frame_buildable_add_child (GtkBuildable *buildable,
 235                                GtkBuilder   *builder,
 236                                GObject      *child,
 237                                const gchar  *type)
 238 {
 239   if (type && strcmp (type, "label") == 0)
 240     gtk_frame_set_label_widget (GTK_FRAME (buildable), GTK_WIDGET (child));
 241   else if (!type)
 242     gtk_container_add (GTK_CONTAINER (buildable), GTK_WIDGET (child));
 243   else
 244     GTK_BUILDER_WARN_INVALID_CHILD_TYPE (GTK_FRAME (buildable), type);
 245 }
 246
 247 static void
 248 gtk_frame_init (GtkFrame *frame)
 249 {
 250   GtkFramePrivate *priv;
 251   GtkStyleContext *context;
 252
 253   frame->priv = G_TYPE_INSTANCE_GET_PRIVATE (frame,
 254                                              GTK_TYPE_FRAME,
 255                                              GtkFramePrivate);
 256   priv = frame->priv;
 257
 258   priv->label_widget = NULL;
 259   priv->shadow_type = GTK_SHADOW_ETCHED_IN;
 260   priv->label_xalign = 0.0;
 261   priv->label_yalign = 0.5;
 262
 263   context = gtk_widget_get_style_context (GTK_WIDGET (frame));
 264   gtk_style_context_add_class (context, GTK_STYLE_CLASS_FRAME);
 265 }
 266
 267 static void
 268 gtk_frame_set_property (GObject         *object,
 269                         guint            prop_id,
 270                         const GValue    *value,
 271                         GParamSpec      *pspec)
 272 {
 273   GtkFrame *frame = GTK_FRAME (object);
 274   GtkFramePrivate *priv = frame->priv;
 275
 276   switch (prop_id)
 277     {
 278     case PROP_LABEL:
 279       gtk_frame_set_label (frame, g_value_get_string (value));
 280       break;
 281     case PROP_LABEL_XALIGN:
 282       gtk_frame_set_label_align (frame, g_value_get_float (value),
 283                                  priv->label_yalign);
 284       break;
 285     case PROP_LABEL_YALIGN:
 286       gtk_frame_set_label_align (frame, priv->label_xalign,
 287                                  g_value_get_float (value));
 288       break;
 289     case PROP_SHADOW_TYPE:
 290       gtk_frame_set_shadow_type (frame, g_value_get_enum (value));
 291       break;
 292     case PROP_LABEL_WIDGET:
 293       gtk_frame_set_label_widget (frame, g_value_get_object (value));
 294       break;
 295     default:
 296       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 297       break;
 298     }
 299 }
 300
 301 static void
 302 gtk_frame_get_property (GObject         *object,
 303                         guint            prop_id,
 304                         GValue          *value,
 305                         GParamSpec      *pspec)
 306 {
 307   GtkFrame *frame = GTK_FRAME (object);
 308   GtkFramePrivate *priv = frame->priv;
 309
 310   switch (prop_id)
 311     {
 312     case PROP_LABEL:
 313       g_value_set_string (value, gtk_frame_get_label (frame));
 314       break;
 315     case PROP_LABEL_XALIGN:
 316       g_value_set_float (value, priv->label_xalign);
 317       break;
 318     case PROP_LABEL_YALIGN:
 319       g_value_set_float (value, priv->label_yalign);
 320       break;
 321     case PROP_SHADOW_TYPE:
 322       g_value_set_enum (value, priv->shadow_type);
 323       break;
 324     case PROP_LABEL_WIDGET:
 325       g_value_set_object (value,
 326                           priv->label_widget ?
 327                           G_OBJECT (priv->label_widget) : NULL);
 328       break;
 329     default:
 330       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 331       break;
 332     }
 333 }
 334
 335 /**
 336  * gtk_frame_new:
 337  * @label: the text to use as the label of the frame
 338  *
 339  * Creates a new #GtkFrame, with optional label @label.
 340  * If @label is %NULL, the label is omitted.
 341  *
 342  * Return value: a new #GtkFrame widget
 343  **/
 344 GtkWidget*
 345 gtk_frame_new (const gchar *label)
 346 {
 347   return g_object_new (GTK_TYPE_FRAME, "label", label, NULL);
 348 }
 349
 350 static void
 351 gtk_frame_remove (GtkContainer *container,
 352                   GtkWidget    *child)
 353 {
 354   GtkFrame *frame = GTK_FRAME (container);
 355   GtkFramePrivate *priv = frame->priv;
 356
 357   if (priv->label_widget == child)
 358     gtk_frame_set_label_widget (frame, NULL);
 359   else
 360     GTK_CONTAINER_CLASS (gtk_frame_parent_class)->remove (container, child);
 361 }
 362
 363 static void
 364 gtk_frame_forall (GtkContainer *container,
 365                   gboolean      include_internals,
 366                   GtkCallback   callback,
 367                   gpointer      callback_data)
 368 {
 369   GtkBin *bin = GTK_BIN (container);
 370   GtkFrame *frame = GTK_FRAME (container);
 371   GtkFramePrivate *priv = frame->priv;
 372   GtkWidget *child;
 373
 374   child = gtk_bin_get_child (bin);
 375   if (child)
 376     (* callback) (child, callback_data);
 377
 378   if (priv->label_widget)
 379     (* callback) (priv->label_widget, callback_data);
 380 }
 381
 382 static GtkWidgetPath *
 383 gtk_frame_get_path_for_child (GtkContainer *container,
 384                               GtkWidget    *child)
 385 {
 386   GtkFramePrivate *priv = GTK_FRAME (container)->priv;
 387   GtkWidgetPath *path;
 388
 389   path = GTK_CONTAINER_CLASS (gtk_frame_parent_class)->get_path_for_child (container, child);
 390
 391   if (child == priv->label_widget)
 392     gtk_widget_path_iter_add_class (path,
 393                                     gtk_widget_path_length (path) - 2,
 394                                     GTK_STYLE_CLASS_FRAME);
 395
 396   return path;
 397 }
 398
 399 /**
 400  * gtk_frame_set_label:
 401  * @frame: a #GtkFrame
 402  * @label: (allow-none): the text to use as the label of the frame
 403  *
 404  * Sets the text of the label. If @label is %NULL,
 405  * the current label is removed.
 406  **/
 407 void
 408 gtk_frame_set_label (GtkFrame *frame,
 409                      const gchar *label)
 410 {
 411   g_return_if_fail (GTK_IS_FRAME (frame));
 412
 413   if (!label)
 414     {
 415       gtk_frame_set_label_widget (frame, NULL);
 416     }
 417   else
 418     {
 419       GtkWidget *child = gtk_label_new (label);
 420       gtk_widget_show (child);
 421
 422       gtk_frame_set_label_widget (frame, child);
 423     }
 424 }
 425
 426 /**
 427  * gtk_frame_get_label:
 428  * @frame: a #GtkFrame
 429  *
 430  * If the frame's label widget is a #GtkLabel, returns the
 431  * text in the label widget. (The frame will have a #GtkLabel
 432  * for the label widget if a non-%NULL argument was passed
 433  * to gtk_frame_new().)
 434  *
 435  * Return value: the text in the label, or %NULL if there
 436  *               was no label widget or the lable widget was not
 437  *               a #GtkLabel. This string is owned by GTK+ and
 438  *               must not be modified or freed.
 439  **/
 440 const gchar *
 441 gtk_frame_get_label (GtkFrame *frame)
 442 {
 443   GtkFramePrivate *priv;
 444
 445   g_return_val_if_fail (GTK_IS_FRAME (frame), NULL);
 446
 447   priv = frame->priv;
 448
 449   if (GTK_IS_LABEL (priv->label_widget))
 450     return gtk_label_get_text (GTK_LABEL (priv->label_widget));
 451   else
 452     return NULL;
 453 }
 454
 455 /**
 456  * gtk_frame_set_label_widget:
 457  * @frame: a #GtkFrame
 458  * @label_widget: the new label widget
 459  *
 460  * Sets the label widget for the frame. This is the widget that
 461  * will appear embedded in the top edge of the frame as a
 462  * title.
 463  **/
 464 void
 465 gtk_frame_set_label_widget (GtkFrame  *frame,
 466                             GtkWidget *label_widget)
 467 {
 468   GtkFramePrivate *priv;
 469   gboolean need_resize = FALSE;
 470
 471   g_return_if_fail (GTK_IS_FRAME (frame));
 472   g_return_if_fail (label_widget == NULL || GTK_IS_WIDGET (label_widget));
 473   g_return_if_fail (label_widget == NULL || gtk_widget_get_parent (label_widget) == NULL);
 474
 475   priv = frame->priv;
 476
 477   if (priv->label_widget == label_widget)
 478     return;
 479
 480   if (priv->label_widget)
 481     {
 482       need_resize = gtk_widget_get_visible (priv->label_widget);
 483       gtk_widget_unparent (priv->label_widget);
 484     }
 485
 486   priv->label_widget = label_widget;
 487
 488   if (label_widget)
 489     {
 490       priv->label_widget = label_widget;
 491       gtk_widget_set_parent (label_widget, GTK_WIDGET (frame));
 492       need_resize |= gtk_widget_get_visible (label_widget);
 493     }
 494
 495   if (gtk_widget_get_visible (GTK_WIDGET (frame)) && need_resize)
 496     gtk_widget_queue_resize (GTK_WIDGET (frame));
 497
 498   g_object_freeze_notify (G_OBJECT (frame));
 499   g_object_notify (G_OBJECT (frame), "label-widget");
 500   g_object_notify (G_OBJECT (frame), "label");
 501   g_object_thaw_notify (G_OBJECT (frame));
 502 }
 503
 504 /**
 505  * gtk_frame_get_label_widget:
 506  * @frame: a #GtkFrame
 507  *
 508  * Retrieves the label widget for the frame. See
 509  * gtk_frame_set_label_widget().
 510  *
 511  * Return value: (transfer none): the label widget, or %NULL if there is none.
 512  **/
 513 GtkWidget *
 514 gtk_frame_get_label_widget (GtkFrame *frame)
 515 {
 516   g_return_val_if_fail (GTK_IS_FRAME (frame), NULL);
 517
 518   return frame->priv->label_widget;
 519 }
 520
 521 /**
 522  * gtk_frame_set_label_align:
 523  * @frame: a #GtkFrame
 524  * @xalign: The position of the label along the top edge
 525  *   of the widget. A value of 0.0 represents left alignment;
 526  *   1.0 represents right alignment.
 527  * @yalign: The y alignment of the label. A value of 0.0 aligns under
 528  *   the frame; 1.0 aligns above the frame. If the values are exactly
 529  *   0.0 or 1.0 the gap in the frame won't be painted because the label
 530  *   will be completely above or below the frame.
 531  *
 532  * Sets the alignment of the frame widget's label. The
 533  * default values for a newly created frame are 0.0 and 0.5.
 534  **/
 535 void
 536 gtk_frame_set_label_align (GtkFrame *frame,
 537                            gfloat    xalign,
 538                            gfloat    yalign)
 539 {
 540   GtkFramePrivate *priv;
 541
 542   g_return_if_fail (GTK_IS_FRAME (frame));
 543
 544   priv = frame->priv;
 545
 546   xalign = CLAMP (xalign, 0.0, 1.0);
 547   yalign = CLAMP (yalign, 0.0, 1.0);
 548
 549   g_object_freeze_notify (G_OBJECT (frame));
 550   if (xalign != priv->label_xalign)
 551     {
 552       priv->label_xalign = xalign;
 553       g_object_notify (G_OBJECT (frame), "label-xalign");
 554     }
 555
 556   if (yalign != priv->label_yalign)
 557     {
 558       priv->label_yalign = yalign;
 559       g_object_notify (G_OBJECT (frame), "label-yalign");
 560     }
 561
 562   g_object_thaw_notify (G_OBJECT (frame));
 563   gtk_widget_queue_resize (GTK_WIDGET (frame));
 564 }
 565
 566 /**
 567  * gtk_frame_get_label_align:
 568  * @frame: a #GtkFrame
 569  * @xalign: (out) (allow-none): location to store X alignment of
 570  *     frame's label, or %NULL
 571  * @yalign: (out) (allow-none): location to store X alignment of
 572  *     frame's label, or %NULL
 573  *
 574  * Retrieves the X and Y alignment of the frame's label. See
 575  * gtk_frame_set_label_align().
 576  **/
 577 void
 578 gtk_frame_get_label_align (GtkFrame *frame,
 579                            gfloat   *xalign,
 580                            gfloat   *yalign)
 581 {
 582   GtkFramePrivate *priv;
 583
 584   g_return_if_fail (GTK_IS_FRAME (frame));
 585
 586   priv = frame->priv;
 587
 588   if (xalign)
 589     *xalign = priv->label_xalign;
 590   if (yalign)
 591     *yalign = priv->label_yalign;
 592 }
 593
 594 /**
 595  * gtk_frame_set_shadow_type:
 596  * @frame: a #GtkFrame
 597  * @type: the new #GtkShadowType
 598  *
 599  * Sets the shadow type for @frame.
 600  **/
 601 void
 602 gtk_frame_set_shadow_type (GtkFrame      *frame,
 603                            GtkShadowType  type)
 604 {
 605   GtkFramePrivate *priv;
 606   GtkWidget *widget;
 607
 608   g_return_if_fail (GTK_IS_FRAME (frame));
 609
 610   priv = frame->priv;
 611
 612   if ((GtkShadowType) priv->shadow_type != type)
 613     {
 614       widget = GTK_WIDGET (frame);
 615       priv->shadow_type = type;
 616       g_object_notify (G_OBJECT (frame), "shadow-type");
 617
 618       if (gtk_widget_is_drawable (widget))
 619         {
 620           gtk_widget_queue_draw (widget);
 621         }
 622
 623       gtk_widget_queue_resize (widget);
 624     }
 625 }
 626
 627 /**
 628  * gtk_frame_get_shadow_type:
 629  * @frame: a #GtkFrame
 630  *
 631  * Retrieves the shadow type of the frame. See
 632  * gtk_frame_set_shadow_type().
 633  *
 634  * Return value: the current shadow type of the frame.
 635  **/
 636 GtkShadowType
 637 gtk_frame_get_shadow_type (GtkFrame *frame)
 638 {
 639   g_return_val_if_fail (GTK_IS_FRAME (frame), GTK_SHADOW_ETCHED_IN);
 640
 641   return frame->priv->shadow_type;
 642 }
 643
 644 static void
 645 get_padding_and_border (GtkFrame *frame,
 646                         GtkBorder *border)
 647 {
 648   GtkStyleContext *context;
 649   GtkStateFlags state;
 650
 651   context = gtk_widget_get_style_context (GTK_WIDGET (frame));
 652   state = gtk_widget_get_state_flags (GTK_WIDGET (frame));
 653
 654   gtk_style_context_get_padding (context, state, border);
 655
 656   if (frame->priv->shadow_type != GTK_SHADOW_NONE)
 657     {
 658       GtkBorder tmp;
 659
 660       gtk_style_context_get_border (context, state, &tmp);
 661       border->top += tmp.top;
 662       border->right += tmp.right;
 663       border->bottom += tmp.bottom;
 664       border->left += tmp.left;
 665     }
 666 }
 667
 668 static gboolean
 669 gtk_frame_draw (GtkWidget *widget,
 670                 cairo_t   *cr)
 671 {
 672   GtkFrame *frame;
 673   GtkFramePrivate *priv;
 674   GtkStyleContext *context;
 675   gint x, y, width, height;
 676   GtkAllocation allocation;
 677   GtkBorder padding;
 678
 679   frame = GTK_FRAME (widget);
 680   priv = frame->priv;
 681
 682   gtk_widget_get_allocation (widget, &allocation);
 683   get_padding_and_border (frame, &padding);
 684   context = gtk_widget_get_style_context (widget);
 685
 686   x = priv->child_allocation.x - allocation.x - padding.left;
 687   y = priv->child_allocation.y - allocation.y - padding.top;
 688   width = priv->child_allocation.width + padding.left + padding.right;
 689   height =  priv->child_allocation.height + padding.top + padding.bottom;
 690
 691   if (priv->shadow_type != GTK_SHADOW_NONE)
 692     {
 693       if (priv->label_widget)
 694         {
 695           gfloat xalign;
 696           gint height_extra;
 697           gint x2;
 698
 699           if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR)
 700             xalign = priv->label_xalign;
 701           else
 702             xalign = 1 - priv->label_xalign;
 703
 704           height_extra = MAX (0, priv->label_allocation.height - padding.top)
 705             - priv->label_yalign * priv->label_allocation.height;
 706           y -= height_extra;
 707           height += height_extra;
 708
 709           x2 = padding.left + (priv->child_allocation.width - priv->label_allocation.width - 2 * LABEL_PAD - 2 * LABEL_SIDE_PAD) * xalign + LABEL_SIDE_PAD;
 710           /* If the label is completely over or under the frame we can omit the gap */
 711           if (priv->label_yalign == 0.0 || priv->label_yalign == 1.0)
 712             gtk_render_frame (context, cr, x, y, width, height);
 713           else
 714             gtk_render_frame_gap (context, cr,
 715                                   x, y, width, height,
 716                                   GTK_POS_TOP, x2,
 717                                   x2 + priv->label_allocation.width + 2 * LABEL_PAD);
 718         }
 719       else
 720         gtk_render_frame (context, cr, x, y, width, height);
 721     }
 722
 723   GTK_WIDGET_CLASS (gtk_frame_parent_class)->draw (widget, cr);
 724
 725   return FALSE;
 726 }
 727
 728 static void
 729 gtk_frame_size_allocate (GtkWidget     *widget,
 730                          GtkAllocation *allocation)
 731 {
 732   GtkFrame *frame = GTK_FRAME (widget);
 733   GtkFramePrivate *priv = frame->priv;
 734   GtkBin *bin = GTK_BIN (widget);
 735   GtkAllocation new_allocation;
 736   GtkWidget *child;
 737
 738   gtk_widget_set_allocation (widget, allocation);
 739
 740   gtk_frame_compute_child_allocation (frame, &new_allocation);
 741
 742   /* If the child allocation changed, that means that the frame is drawn
 743    * in a new place, so we must redraw the entire widget.
 744    */
 745   if (gtk_widget_get_mapped (widget))
 746     {
 747       gdk_window_invalidate_rect (gtk_widget_get_window (widget), allocation, FALSE);
 748     }
 749
 750   child = gtk_bin_get_child (bin);
 751   if (child && gtk_widget_get_visible (child))
 752     gtk_widget_size_allocate (child, &new_allocation);
 753
 754   priv->child_allocation = new_allocation;
 755
 756   if (priv->label_widget && gtk_widget_get_visible (priv->label_widget))
 757     {
 758       GtkBorder padding;
 759       gint nat_width, width, height;
 760       gfloat xalign;
 761
 762       get_padding_and_border (frame, &padding);
 763
 764       if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR)
 765         xalign = priv->label_xalign;
 766       else
 767         xalign = 1 - priv->label_xalign;
 768
 769       gtk_widget_get_preferred_width (priv->label_widget, NULL, &nat_width);
 770       width = new_allocation.width - 2 * LABEL_PAD - 2 * LABEL_SIDE_PAD;
 771       width = MIN (width, nat_width);
 772
 773       gtk_widget_get_preferred_height_for_width (priv->label_widget, width,
 774                                                  &height, NULL);
 775
 776
 777       priv->label_allocation.x = priv->child_allocation.x + LABEL_SIDE_PAD +
 778         (new_allocation.width - width - 2 * LABEL_PAD - 2 * LABEL_SIDE_PAD) * xalign + LABEL_PAD;
 779
 780       priv->label_allocation.width = width;
 781
 782       priv->label_allocation.y = priv->child_allocation.y - MAX (height, padding.top);
 783       priv->label_allocation.height = height;
 784
 785       gtk_widget_size_allocate (priv->label_widget, &priv->label_allocation);
 786     }
 787 }
 788
 789 static void
 790 gtk_frame_compute_child_allocation (GtkFrame      *frame,
 791                                     GtkAllocation *child_allocation)
 792 {
 793   g_return_if_fail (GTK_IS_FRAME (frame));
 794   g_return_if_fail (child_allocation != NULL);
 795
 796   GTK_FRAME_GET_CLASS (frame)->compute_child_allocation (frame, child_allocation);
 797 }
 798
 799 static void
 800 gtk_frame_real_compute_child_allocation (GtkFrame      *frame,
 801                                          GtkAllocation *child_allocation)
 802 {
 803   GtkFramePrivate *priv = frame->priv;
 804   GtkWidget *widget = GTK_WIDGET (frame);
 805   GtkAllocation allocation;
 806   GtkBorder padding;
 807   gint top_margin;
 808   guint border_width;
 809
 810   gtk_widget_get_allocation (widget, &allocation);
 811   get_padding_and_border (frame, &padding);
 812   border_width = gtk_container_get_border_width (GTK_CONTAINER (frame));
 813
 814   if (priv->label_widget)
 815     {
 816       gint nat_width, width, height;
 817
 818       gtk_widget_get_preferred_width (priv->label_widget, NULL, &nat_width);
 819
 820       width = allocation.width;
 821       width -= 2 * LABEL_PAD + 2 * LABEL_SIDE_PAD;
 822       width -= (border_width * 2) + padding.left + padding.right;
 823
 824       width = MIN (width, nat_width);
 825
 826       gtk_widget_get_preferred_height_for_width (priv->label_widget, width,
 827                                                  &height, NULL);
 828
 829       top_margin = MAX (height, padding.top);
 830     }
 831   else
 832     top_margin = padding.top;
 833
 834   child_allocation->x = border_width + padding.left;
 835   child_allocation->y = border_width + top_margin;
 836   child_allocation->width = MAX (1, (gint) (allocation.width - (border_width * 2) -
 837                                             padding.left - padding.right));
 838   child_allocation->height = MAX (1, (gint) (allocation.height - child_allocation->y -
 839                                              border_width - padding.bottom));
 840
 841   child_allocation->x += allocation.x;
 842   child_allocation->y += allocation.y;
 843 }
 844
 845 static void
 846 gtk_frame_get_preferred_size (GtkWidget      *request,
 847                               GtkOrientation  orientation,
 848                               gint           *minimum_size,
 849                               gint           *natural_size)
 850 {
 851   GtkFrame *frame = GTK_FRAME (request);
 852   GtkFramePrivate *priv = frame->priv;
 853   GtkBorder padding;
 854   GtkWidget *widget = GTK_WIDGET (request);
 855   GtkWidget *child;
 856   GtkBin *bin = GTK_BIN (widget);
 857   gint child_min, child_nat;
 858   gint minimum, natural;
 859   guint border_width;
 860
 861   get_padding_and_border (frame, &padding);
 862   border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
 863
 864   if (priv->label_widget && gtk_widget_get_visible (priv->label_widget))
 865     {
 866       if (orientation == GTK_ORIENTATION_HORIZONTAL)
 867         {
 868           gtk_widget_get_preferred_width (priv->label_widget,
 869                                           &child_min, &child_nat);
 870           minimum = child_min + 2 * LABEL_PAD + 2 * LABEL_SIDE_PAD;
 871           natural = child_nat + 2 * LABEL_PAD + 2 * LABEL_SIDE_PAD;
 872         }
 873       else
 874         {
 875           gtk_widget_get_preferred_height (priv->label_widget,
 876                                            &child_min, &child_nat);
 877           minimum = MAX (0, child_min - padding.top);
 878           natural = MAX (0, child_nat - padding.top);
 879         }
 880     }
 881   else
 882     {
 883       minimum = 0;
 884       natural = 0;
 885     }
 886
 887   child = gtk_bin_get_child (bin);
 888   if (child && gtk_widget_get_visible (child))
 889     {
 890       if (orientation == GTK_ORIENTATION_HORIZONTAL)
 891         {
 892           gtk_widget_get_preferred_width (child,
 893                                           &child_min, &child_nat);
 894           minimum = MAX (minimum, child_min);
 895           natural = MAX (natural, child_nat);
 896         }
 897       else
 898         {
 899           gtk_widget_get_preferred_height (child,
 900                                            &child_min, &child_nat);
 901           minimum += child_min;
 902           natural += child_nat;
 903         }
 904     }
 905
 906   if (orientation == GTK_ORIENTATION_HORIZONTAL)
 907     {
 908       minimum += (border_width * 2) + padding.left + padding.right;
 909       natural += (border_width * 2) + padding.left + padding.right;
 910     }
 911   else
 912     {
 913       minimum += (border_width * 2) + padding.top + padding.bottom;
 914       natural += (border_width * 2) + padding.top + padding.bottom;
 915     }
 916
 917  if (minimum_size)
 918     *minimum_size = minimum;
 919
 920   if (natural_size)
 921     *natural_size = natural;
 922 }
 923
 924 static void
 925 gtk_frame_get_preferred_width (GtkWidget *widget,
 926                                gint      *minimum_size,
 927                                gint      *natural_size)
 928 {
 929   gtk_frame_get_preferred_size (widget, GTK_ORIENTATION_HORIZONTAL, minimum_size, natural_size);
 930 }
 931
 932 static void
 933 gtk_frame_get_preferred_height (GtkWidget *widget,
 934                                 gint      *minimum_size,
 935                                 gint      *natural_size)
 936 {
 937   gtk_frame_get_preferred_size (widget, GTK_ORIENTATION_VERTICAL, minimum_size, natural_size);
 938 }
 939
 940
 941 static void
 942 gtk_frame_get_preferred_height_for_width (GtkWidget *request,
 943                                           gint       width,
 944                                           gint      *minimum_height,
 945                                           gint      *natural_height)
 946 {
 947   GtkWidget *widget = GTK_WIDGET (request);
 948   GtkWidget *child;
 949   GtkFrame *frame = GTK_FRAME (widget);
 950   GtkFramePrivate *priv = frame->priv;
 951   GtkBin *bin = GTK_BIN (widget);
 952   GtkBorder padding;
 953   gint child_min, child_nat, label_width;
 954   gint minimum, natural;
 955   guint border_width;
 956
 957   get_padding_and_border (frame, &padding);
 958   border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
 959
 960   minimum = (border_width * 2) + padding.top + padding.bottom;
 961   natural = (border_width * 2) + padding.top + padding.bottom;
 962
 963   width -= (border_width * 2) + padding.left + padding.right;
 964   label_width = width - 2 * LABEL_PAD + 2 * LABEL_SIDE_PAD;
 965
 966   if (priv->label_widget && gtk_widget_get_visible (priv->label_widget))
 967     {
 968       gtk_widget_get_preferred_height_for_width (priv->label_widget,
 969                                                  label_width, &child_min, &child_nat);
 970       minimum += child_min;
 971       natural += child_nat;
 972     }
 973
 974   child = gtk_bin_get_child (bin);
 975   if (child && gtk_widget_get_visible (child))
 976     {
 977       gtk_widget_get_preferred_height_for_width (child,
 978                                                  width, &child_min, &child_nat);
 979       minimum += child_min;
 980       natural += child_nat;
 981     }
 982
 983  if (minimum_height)
 984     *minimum_height = minimum;
 985
 986   if (natural_height)
 987     *natural_height = natural;
 988 }
 989
 990 static void
 991 gtk_frame_get_preferred_width_for_height (GtkWidget *widget,
 992                                           gint       height,
 993                                           gint      *minimum_width,
 994                                           gint      *natural_width)
 995 {
 996   GTK_WIDGET_GET_CLASS (widget)->get_preferred_width (widget, minimum_width, natural_width);
 997 }
 998