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