Pileus Git - ~andy/gtk/blob - gtk/gtkbutton.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 1997-2001.  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 <string.h>
  28 #include "gtkbutton.h"
  29 #include "gtklabel.h"
  30 #include "gtkmain.h"
  31 #include "gtksignal.h"
  32 #include "gtkimage.h"
  33 #include "gtkhbox.h"
  34 #include "gtkstock.h"
  35 #include "gtkiconfactory.h"
  36 #include "gtkintl.h"
  37
  38 #define CHILD_SPACING     1
  39
  40 static GtkBorder default_default_border = { 5, 5, 6, 6 };
  41 static GtkBorder default_default_outside_border = { 5, 5, 6, 6 };
  42
  43 /* Time out before giving up on getting a key release when animatng
  44  * the close button.
  45  */
  46 #define ACTIVATE_TIMEOUT 250
  47
  48 enum {
  49   PRESSED,
  50   RELEASED,
  51   CLICKED,
  52   ENTER,
  53   LEAVE,
  54   ACTIVATE,
  55   LAST_SIGNAL
  56 };
  57
  58 enum {
  59   PROP_0,
  60   PROP_LABEL,
  61   PROP_RELIEF
  62 };
  63
  64 static void gtk_button_class_init     (GtkButtonClass   *klass);
  65 static void gtk_button_init           (GtkButton        *button);
  66 static void gtk_button_set_property   (GObject         *object,
  67                                        guint            prop_id,
  68                                        const GValue    *value,
  69                                        GParamSpec      *pspec);
  70 static void gtk_button_get_property   (GObject         *object,
  71                                        guint            prop_id,
  72                                        GValue          *value,
  73                                        GParamSpec      *pspec);
  74 static void gtk_button_realize        (GtkWidget        *widget);
  75 static void gtk_button_unrealize      (GtkWidget        *widget);
  76 static void gtk_button_size_request   (GtkWidget        *widget,
  77                                        GtkRequisition   *requisition);
  78 static void gtk_button_size_allocate  (GtkWidget        *widget,
  79                                        GtkAllocation    *allocation);
  80 static void gtk_button_paint          (GtkWidget        *widget,
  81                                        GdkRectangle     *area);
  82 static gint gtk_button_expose         (GtkWidget        *widget,
  83                                        GdkEventExpose   *event);
  84 static gint gtk_button_button_press   (GtkWidget        *widget,
  85                                        GdkEventButton   *event);
  86 static gint gtk_button_button_release (GtkWidget        *widget,
  87                                        GdkEventButton   *event);
  88 static gint gtk_button_key_release    (GtkWidget        *widget,
  89                                        GdkEventKey      *event);
  90 static gint gtk_button_enter_notify   (GtkWidget        *widget,
  91                                        GdkEventCrossing *event);
  92 static gint gtk_button_leave_notify   (GtkWidget        *widget,
  93                                        GdkEventCrossing *event);
  94 static void gtk_button_add            (GtkContainer     *container,
  95                                        GtkWidget        *widget);
  96 static void gtk_button_remove         (GtkContainer     *container,
  97                                        GtkWidget        *widget);
  98 static void gtk_real_button_pressed   (GtkButton        *button);
  99 static void gtk_real_button_released  (GtkButton        *button);
 100 static void gtk_real_button_enter     (GtkButton        *button);
 101 static void gtk_real_button_leave     (GtkButton        *button);
 102 static void gtk_real_button_activate (GtkButton         *button);
 103 static GtkType gtk_button_child_type  (GtkContainer     *container);
 104
 105 static void gtk_button_finish_activate (GtkButton *button,
 106                                         gboolean   do_it);
 107
 108 static GtkBinClass *parent_class = NULL;
 109 static guint button_signals[LAST_SIGNAL] = { 0 };
 110
 111
 112 GtkType
 113 gtk_button_get_type (void)
 114 {
 115   static GtkType button_type = 0;
 116
 117   if (!button_type)
 118     {
 119       static const GTypeInfo button_info =
 120       {
 121         sizeof (GtkButtonClass),
 122         NULL,           /* base_init */
 123         NULL,           /* base_finalize */
 124         (GClassInitFunc) gtk_button_class_init,
 125         NULL,           /* class_finalize */
 126         NULL,           /* class_data */
 127         sizeof (GtkButton),
 128         16,             /* n_preallocs */
 129         (GInstanceInitFunc) gtk_button_init,
 130       };
 131
 132       button_type = g_type_register_static (GTK_TYPE_BIN, "GtkButton", &button_info, 0);
 133     }
 134
 135   return button_type;
 136 }
 137
 138 static void
 139 gtk_button_class_init (GtkButtonClass *klass)
 140 {
 141   GtkObjectClass *object_class;
 142   GtkWidgetClass *widget_class;
 143   GtkContainerClass *container_class;
 144
 145   object_class = (GtkObjectClass*) klass;
 146   widget_class = (GtkWidgetClass*) klass;
 147   container_class = (GtkContainerClass*) klass;
 148
 149   parent_class = g_type_class_peek_parent (klass);
 150
 151   G_OBJECT_CLASS(object_class)->set_property = gtk_button_set_property;
 152   G_OBJECT_CLASS(object_class)->get_property = gtk_button_get_property;
 153
 154   widget_class->realize = gtk_button_realize;
 155   widget_class->unrealize = gtk_button_unrealize;
 156   widget_class->size_request = gtk_button_size_request;
 157   widget_class->size_allocate = gtk_button_size_allocate;
 158   widget_class->expose_event = gtk_button_expose;
 159   widget_class->button_press_event = gtk_button_button_press;
 160   widget_class->button_release_event = gtk_button_button_release;
 161   widget_class->key_release_event = gtk_button_key_release;
 162   widget_class->enter_notify_event = gtk_button_enter_notify;
 163   widget_class->leave_notify_event = gtk_button_leave_notify;
 164
 165   container_class->add = gtk_button_add;
 166   container_class->remove = gtk_button_remove;
 167   container_class->child_type = gtk_button_child_type;
 168
 169   klass->pressed = gtk_real_button_pressed;
 170   klass->released = gtk_real_button_released;
 171   klass->clicked = NULL;
 172   klass->enter = gtk_real_button_enter;
 173   klass->leave = gtk_real_button_leave;
 174   klass->activate = gtk_real_button_activate;
 175
 176   g_object_class_install_property (G_OBJECT_CLASS(object_class),
 177                                    PROP_LABEL,
 178                                    g_param_spec_string ("label",
 179                                                         _("Label"),
 180                                                         _("Text of the label widget inside the button, if the button contains a label widget."),
 181                                                         NULL,
 182                                                         G_PARAM_READABLE | G_PARAM_WRITABLE));
 183
 184   g_object_class_install_property (G_OBJECT_CLASS(object_class),
 185                                    PROP_RELIEF,
 186                                    g_param_spec_enum ("relief",
 187                                                       _("Border relief"),
 188                                                       _("The border relief style."),
 189                                                       GTK_TYPE_RELIEF_STYLE,
 190                                                       GTK_RELIEF_NORMAL,
 191                                                       G_PARAM_READABLE | G_PARAM_WRITABLE));
 192
 193   button_signals[PRESSED] =
 194     gtk_signal_new ("pressed",
 195                     GTK_RUN_FIRST,
 196                     GTK_CLASS_TYPE (object_class),
 197                     GTK_SIGNAL_OFFSET (GtkButtonClass, pressed),
 198                     gtk_marshal_VOID__VOID,
 199                     GTK_TYPE_NONE, 0);
 200   button_signals[RELEASED] =
 201     gtk_signal_new ("released",
 202                     GTK_RUN_FIRST,
 203                     GTK_CLASS_TYPE (object_class),
 204                     GTK_SIGNAL_OFFSET (GtkButtonClass, released),
 205                     gtk_marshal_VOID__VOID,
 206                     GTK_TYPE_NONE, 0);
 207   button_signals[CLICKED] =
 208     gtk_signal_new ("clicked",
 209                     GTK_RUN_FIRST | GTK_RUN_ACTION,
 210                     GTK_CLASS_TYPE (object_class),
 211                     GTK_SIGNAL_OFFSET (GtkButtonClass, clicked),
 212                     gtk_marshal_VOID__VOID,
 213                     GTK_TYPE_NONE, 0);
 214   button_signals[ENTER] =
 215     gtk_signal_new ("enter",
 216                     GTK_RUN_FIRST,
 217                     GTK_CLASS_TYPE (object_class),
 218                     GTK_SIGNAL_OFFSET (GtkButtonClass, enter),
 219                     gtk_marshal_VOID__VOID,
 220                     GTK_TYPE_NONE, 0);
 221   button_signals[LEAVE] =
 222     gtk_signal_new ("leave",
 223                     GTK_RUN_FIRST,
 224                     GTK_CLASS_TYPE (object_class),
 225                     GTK_SIGNAL_OFFSET (GtkButtonClass, leave),
 226                     gtk_marshal_VOID__VOID,
 227                     GTK_TYPE_NONE, 0);
 228   button_signals[ACTIVATE] =
 229     gtk_signal_new ("activate",
 230                     GTK_RUN_FIRST,
 231                     GTK_CLASS_TYPE (object_class),
 232                     GTK_SIGNAL_OFFSET (GtkButtonClass, activate),
 233                     gtk_marshal_VOID__VOID,
 234                     GTK_TYPE_NONE, 0);
 235   widget_class->activate_signal = button_signals[ACTIVATE];
 236
 237   gtk_widget_class_install_style_property (widget_class,
 238                                            g_param_spec_boxed ("default_border",
 239                                                                _("Default Spacing"),
 240                                                                _("Extra space to add for CAN_DEFAULT buttons"),
 241                                                                GTK_TYPE_BORDER,
 242                                                                G_PARAM_READABLE));
 243
 244   gtk_widget_class_install_style_property (widget_class,
 245                                            g_param_spec_boxed ("default_outside_border",
 246                                                                _("Default Outside Spacing"),
 247                                                                _("Extra space to add for CAN_DEFAULT buttons that is always drawn outside the border"),
 248                                                                GTK_TYPE_BORDER,
 249                                                                G_PARAM_READABLE));
 250 }
 251
 252 static void
 253 gtk_button_init (GtkButton *button)
 254 {
 255   GTK_WIDGET_SET_FLAGS (button, GTK_CAN_FOCUS | GTK_RECEIVES_DEFAULT);
 256   GTK_WIDGET_UNSET_FLAGS (button, GTK_NO_WINDOW);
 257
 258   button->child = NULL;
 259   button->in_button = FALSE;
 260   button->button_down = FALSE;
 261   button->relief = GTK_RELIEF_NORMAL;
 262 }
 263
 264 static GtkType
 265 gtk_button_child_type  (GtkContainer     *container)
 266 {
 267   if (!GTK_BIN (container)->child)
 268     return GTK_TYPE_WIDGET;
 269   else
 270     return GTK_TYPE_NONE;
 271 }
 272
 273 static void
 274 gtk_button_set_property (GObject         *object,
 275                          guint            prop_id,
 276                          const GValue    *value,
 277                          GParamSpec      *pspec)
 278 {
 279   GtkButton *button;
 280
 281   button = GTK_BUTTON (object);
 282
 283   switch (prop_id)
 284     {
 285       GtkWidget *child;
 286
 287     case PROP_LABEL:
 288       child = GTK_BIN (button)->child;
 289       if (!child)
 290         child = gtk_widget_new (GTK_TYPE_LABEL,
 291                                 "visible", TRUE,
 292                                 "parent", button,
 293                                 NULL);
 294       if (GTK_IS_LABEL (child))
 295         {
 296           gtk_label_set_text (GTK_LABEL (child),
 297                               g_value_get_string (value) ? g_value_get_string (value) : "");
 298         }
 299       break;
 300     case PROP_RELIEF:
 301       gtk_button_set_relief (button, g_value_get_enum (value));
 302       break;
 303     default:
 304       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 305       break;
 306     }
 307 }
 308
 309 static void
 310 gtk_button_get_property (GObject         *object,
 311                          guint            prop_id,
 312                          GValue          *value,
 313                          GParamSpec      *pspec)
 314 {
 315   GtkButton *button;
 316
 317   button = GTK_BUTTON (object);
 318
 319   switch (prop_id)
 320     {
 321     case PROP_LABEL:
 322       if (GTK_BIN (button)->child && GTK_IS_LABEL (GTK_BIN (button)->child))
 323          g_value_set_string (value, GTK_LABEL (GTK_BIN (button)->child)->label);
 324       else
 325          g_value_set_string (value, NULL);
 326       break;
 327     case PROP_RELIEF:
 328       g_value_set_enum (value, gtk_button_get_relief (button));
 329       break;
 330     default:
 331       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 332       break;
 333     }
 334 }
 335
 336 GtkWidget*
 337 gtk_button_new (void)
 338 {
 339   return GTK_WIDGET (gtk_type_new (gtk_button_get_type ()));
 340 }
 341
 342 GtkWidget*
 343 gtk_button_new_with_label (const gchar *label)
 344 {
 345   GtkWidget *button;
 346   GtkWidget *label_widget;
 347
 348   button = gtk_button_new ();
 349   label_widget = gtk_label_new (label);
 350   gtk_misc_set_alignment (GTK_MISC (label_widget), 0.5, 0.5);
 351
 352   gtk_container_add (GTK_CONTAINER (button), label_widget);
 353   gtk_widget_show (label_widget);
 354
 355   return button;
 356 }
 357
 358 /**
 359  * gtk_button_new_from_stock:
 360  * @stock_id: the name of the stock item
 361  * @returns: a new #GtkButton
 362  *
 363  * Creates a new #GtkButton containing the image and text from a stock item.
 364  * Some stock ids have preprocessor macros like #GTK_STOCK_BUTTON_OK and
 365  * #GTK_STOCK_BUTTON_APPLY.
 366  **/
 367 GtkWidget*
 368 gtk_button_new_from_stock (const gchar   *stock_id)
 369 {
 370   GtkWidget *button;
 371   GtkStockItem item;
 372
 373   if (gtk_stock_lookup (stock_id, &item))
 374     {
 375       GtkWidget *label;
 376       GtkWidget *image;
 377       GtkWidget *hbox;
 378
 379       button = gtk_button_new ();
 380
 381       label = gtk_label_new_with_mnemonic (item.label);
 382
 383       gtk_label_set_mnemonic_widget (GTK_LABEL (label), button);
 384
 385       image = gtk_image_new_from_stock (stock_id, GTK_ICON_SIZE_BUTTON);
 386       hbox = gtk_hbox_new (FALSE, 1);
 387
 388       gtk_box_pack_start (GTK_BOX (hbox), image, FALSE, FALSE, 0);
 389       gtk_box_pack_end (GTK_BOX (hbox), label, TRUE, TRUE, 0);
 390
 391       gtk_container_add (GTK_CONTAINER (button), hbox);
 392       gtk_widget_show_all (hbox);
 393     }
 394   else
 395     {
 396       button = gtk_button_new_with_mnemonic (stock_id);
 397     }
 398
 399   return button;
 400 }
 401
 402 /**
 403  * gtk_button_new_with_mnemonic:
 404  * @label: The text of the button, with an underscore in front of the
 405  *         mnemonic character
 406  * @returns: a new #GtkButton
 407  *
 408  * Creates a new #GtkButton containing a label.
 409  * If characters in @label are preceded by an underscore, they are underlined
 410  * indicating that they represent a keyboard accelerator called a mnemonic.
 411  * Pressing Alt and that key activates the button.
 412  **/
 413 GtkWidget*
 414 gtk_button_new_with_mnemonic (const gchar *label)
 415 {
 416   GtkWidget *button;
 417   GtkWidget *label_widget;
 418
 419   button = gtk_button_new ();
 420
 421   label_widget = gtk_label_new_with_mnemonic (label);
 422
 423   gtk_label_set_mnemonic_widget (GTK_LABEL (label_widget), button);
 424
 425   gtk_container_add (GTK_CONTAINER (button), label_widget);
 426   gtk_widget_show (label_widget);
 427
 428   return button;
 429 }
 430
 431 void
 432 gtk_button_pressed (GtkButton *button)
 433 {
 434   g_return_if_fail (button != NULL);
 435   g_return_if_fail (GTK_IS_BUTTON (button));
 436
 437   gtk_signal_emit (GTK_OBJECT (button), button_signals[PRESSED]);
 438 }
 439
 440 void
 441 gtk_button_released (GtkButton *button)
 442 {
 443   g_return_if_fail (button != NULL);
 444   g_return_if_fail (GTK_IS_BUTTON (button));
 445
 446   gtk_signal_emit (GTK_OBJECT (button), button_signals[RELEASED]);
 447 }
 448
 449 void
 450 gtk_button_clicked (GtkButton *button)
 451 {
 452   g_return_if_fail (button != NULL);
 453   g_return_if_fail (GTK_IS_BUTTON (button));
 454
 455   gtk_signal_emit (GTK_OBJECT (button), button_signals[CLICKED]);
 456 }
 457
 458 void
 459 gtk_button_enter (GtkButton *button)
 460 {
 461   g_return_if_fail (button != NULL);
 462   g_return_if_fail (GTK_IS_BUTTON (button));
 463
 464   gtk_signal_emit (GTK_OBJECT (button), button_signals[ENTER]);
 465 }
 466
 467 void
 468 gtk_button_leave (GtkButton *button)
 469 {
 470   g_return_if_fail (button != NULL);
 471   g_return_if_fail (GTK_IS_BUTTON (button));
 472
 473   gtk_signal_emit (GTK_OBJECT (button), button_signals[LEAVE]);
 474 }
 475
 476 void
 477 gtk_button_set_relief (GtkButton *button,
 478                        GtkReliefStyle newrelief)
 479 {
 480   g_return_if_fail (button != NULL);
 481   g_return_if_fail (GTK_IS_BUTTON (button));
 482
 483   button->relief = newrelief;
 484   g_object_notify(G_OBJECT(button), "relief");
 485   gtk_widget_queue_draw (GTK_WIDGET (button));
 486 }
 487
 488 GtkReliefStyle
 489 gtk_button_get_relief (GtkButton *button)
 490 {
 491   g_return_val_if_fail (button != NULL, GTK_RELIEF_NORMAL);
 492   g_return_val_if_fail (GTK_IS_BUTTON (button), GTK_RELIEF_NORMAL);
 493
 494   return button->relief;
 495 }
 496
 497 static void
 498 gtk_button_realize (GtkWidget *widget)
 499 {
 500   GtkButton *button;
 501   GdkWindowAttr attributes;
 502   gint attributes_mask;
 503   gint border_width;
 504
 505   g_return_if_fail (widget != NULL);
 506   g_return_if_fail (GTK_IS_BUTTON (widget));
 507
 508   button = GTK_BUTTON (widget);
 509   GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
 510
 511   border_width = GTK_CONTAINER (widget)->border_width;
 512
 513   attributes.window_type = GDK_WINDOW_CHILD;
 514   attributes.x = widget->allocation.x + border_width;
 515   attributes.y = widget->allocation.y + border_width;
 516   attributes.width = widget->allocation.width - border_width * 2;
 517   attributes.height = widget->allocation.height - border_width * 2;
 518   attributes.wclass = GDK_INPUT_OUTPUT;
 519   attributes.visual = gtk_widget_get_visual (widget);
 520   attributes.colormap = gtk_widget_get_colormap (widget);
 521   attributes.event_mask = gtk_widget_get_events (widget);
 522   attributes.event_mask |= (GDK_EXPOSURE_MASK |
 523                             GDK_BUTTON_PRESS_MASK |
 524                             GDK_BUTTON_RELEASE_MASK |
 525                             GDK_ENTER_NOTIFY_MASK |
 526                             GDK_LEAVE_NOTIFY_MASK);
 527
 528   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
 529
 530   widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask);
 531   gdk_window_set_user_data (widget->window, button);
 532
 533   widget->style = gtk_style_attach (widget->style, widget->window);
 534   gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
 535 }
 536
 537 static void
 538 gtk_button_unrealize (GtkWidget *widget)
 539 {
 540   GtkButton *button = GTK_BUTTON (widget);
 541
 542   if (button->activate_timeout)
 543     gtk_button_finish_activate (button, FALSE);
 544
 545   GTK_WIDGET_CLASS (parent_class)->unrealize (widget);
 546 }
 547
 548 static void
 549 gtk_button_get_props (GtkButton *button,
 550                       GtkBorder *default_border,
 551                       GtkBorder *default_outside_border,
 552                       gboolean  *interior_focus)
 553 {
 554   GtkWidget *widget =  GTK_WIDGET (button);
 555   GtkBorder *tmp_border;
 556
 557   if (default_border)
 558     {
 559       gtk_widget_style_get (widget, "default_border", &tmp_border, NULL);
 560
 561       if (tmp_border)
 562         {
 563           *default_border = *tmp_border;
 564           g_free (tmp_border);
 565         }
 566       else
 567         *default_border = default_default_border;
 568     }
 569
 570   if (default_outside_border)
 571     {
 572       gtk_widget_style_get (widget, "default_outside_border", &tmp_border, NULL);
 573
 574       if (tmp_border)
 575         {
 576           *default_outside_border = *tmp_border;
 577           g_free (tmp_border);
 578         }
 579       else
 580         *default_outside_border = default_default_outside_border;
 581     }
 582
 583   if (interior_focus)
 584     gtk_widget_style_get (widget, "interior_focus", interior_focus, NULL);
 585 }
 586
 587 static void
 588 gtk_button_size_request (GtkWidget      *widget,
 589                          GtkRequisition *requisition)
 590 {
 591   GtkButton *button = GTK_BUTTON (widget);
 592   GtkBorder default_border;
 593   gboolean interior_focus;
 594
 595   gtk_button_get_props (button, &default_border, NULL, &interior_focus);
 596
 597   requisition->width = (GTK_CONTAINER (widget)->border_width + CHILD_SPACING +
 598                         GTK_WIDGET (widget)->style->xthickness) * 2;
 599   requisition->height = (GTK_CONTAINER (widget)->border_width + CHILD_SPACING +
 600                          GTK_WIDGET (widget)->style->ythickness) * 2;
 601
 602   if (GTK_WIDGET_CAN_DEFAULT (widget))
 603     {
 604       requisition->width += default_border.left + default_border.right;
 605       requisition->height += default_border.top + default_border.bottom;
 606     }
 607
 608   if (GTK_BIN (button)->child && GTK_WIDGET_VISIBLE (GTK_BIN (button)->child))
 609     {
 610       GtkRequisition child_requisition;
 611
 612       gtk_widget_size_request (GTK_BIN (button)->child, &child_requisition);
 613
 614       requisition->width += child_requisition.width;
 615       requisition->height += child_requisition.height;
 616     }
 617
 618   if (interior_focus)
 619     {
 620       requisition->width += 2;
 621       requisition->height += 2;
 622     }
 623 }
 624
 625 static void
 626 gtk_button_size_allocate (GtkWidget     *widget,
 627                           GtkAllocation *allocation)
 628 {
 629   GtkButton *button = GTK_BUTTON (widget);
 630   GtkAllocation child_allocation;
 631
 632   gint border_width = GTK_CONTAINER (widget)->border_width;
 633   gint xthickness = GTK_WIDGET (widget)->style->xthickness;
 634   gint ythickness = GTK_WIDGET (widget)->style->ythickness;
 635   GtkBorder default_border;
 636
 637   gtk_button_get_props (button, &default_border, NULL, NULL);
 638
 639   widget->allocation = *allocation;
 640
 641   if (GTK_WIDGET_REALIZED (widget))
 642     gdk_window_move_resize (widget->window,
 643                             widget->allocation.x + border_width,
 644                             widget->allocation.y + border_width,
 645                             widget->allocation.width - border_width * 2,
 646                             widget->allocation.height - border_width * 2);
 647
 648   if (GTK_BIN (button)->child && GTK_WIDGET_VISIBLE (GTK_BIN (button)->child))
 649     {
 650       child_allocation.x = (CHILD_SPACING + xthickness);
 651       child_allocation.y = (CHILD_SPACING + ythickness);
 652
 653       child_allocation.width = MAX (1, (gint)widget->allocation.width - child_allocation.x * 2 -
 654                                  border_width * 2);
 655       child_allocation.height = MAX (1, (gint)widget->allocation.height - child_allocation.y * 2 -
 656                                   border_width * 2);
 657
 658       if (GTK_WIDGET_CAN_DEFAULT (button))
 659         {
 660           child_allocation.x += default_border.left;
 661           child_allocation.y += default_border.top;
 662           child_allocation.width =  MAX (1, child_allocation.width - default_border.left - default_border.right);
 663           child_allocation.height = MAX (1, child_allocation.height - default_border.top - default_border.bottom);
 664         }
 665
 666       gtk_widget_size_allocate (GTK_BIN (button)->child, &child_allocation);
 667     }
 668 }
 669
 670 /*
 671  * +------------------------------------------------+
 672  * |                   BORDER                       |
 673  * |  +------------------------------------------+  |
 674  * |  |\\\\\\\\\\\\\\\\DEFAULT\\\\\\\\\\\\\\\\\  |  |
 675  * |  |\\+------------------------------------+  |  |
 676  * |  |\\| |           SPACING       3      | |  |  |
 677  * |  |\\| +--------------------------------+ |  |  |
 678  * |  |\\| |########## FOCUS ###############| |  |  |
 679  * |  |\\| |#+----------------------------+#| |  |  |
 680  * |  |\\| |#|         RELIEF            \|#| |  |  |
 681  * |  |\\| |#|  +-----------------------+\|#| |  |  |
 682  * |  |\\|1|#|  +     THE TEXT          +\|#|2|  |  |
 683  * |  |\\| |#|  +-----------------------+\|#| |  |  |
 684  * |  |\\| |#| \\\\\ ythickness \\\\\\\\\\|#| |  |  |
 685  * |  |\\| |#+----------------------------+#| |  |  |
 686  * |  |\\| |########### 1 ##################| |  |  |
 687  * |  |\\| +--------------------------------+ |  |  |
 688  * |  |\\| |        default spacing   4     | |  |  |
 689  * |  |\\+------------------------------------+  |  |
 690  * |  |\            ythickness                   |  |
 691  * |  +------------------------------------------+  |
 692  * |                border_width                    |
 693  * +------------------------------------------------+
 694  */
 695
 696 static void
 697 gtk_button_paint (GtkWidget    *widget,
 698                   GdkRectangle *area)
 699 {
 700   GtkButton *button;
 701   GtkShadowType shadow_type;
 702   gint width, height;
 703   gint x, y;
 704   GtkBorder default_border;
 705   GtkBorder default_outside_border;
 706   gboolean interior_focus;
 707
 708   if (GTK_WIDGET_DRAWABLE (widget))
 709     {
 710       button = GTK_BUTTON (widget);
 711
 712       gtk_button_get_props (button, &default_border, &default_outside_border, &interior_focus);
 713
 714       x = 0;
 715       y = 0;
 716       width = widget->allocation.width - GTK_CONTAINER (widget)->border_width * 2;
 717       height = widget->allocation.height - GTK_CONTAINER (widget)->border_width * 2;
 718
 719       gdk_window_set_back_pixmap (widget->window, NULL, TRUE);
 720       gdk_window_clear_area (widget->window, area->x, area->y, area->width, area->height);
 721
 722       if (GTK_WIDGET_HAS_DEFAULT (widget) &&
 723           GTK_BUTTON (widget)->relief == GTK_RELIEF_NORMAL)
 724         {
 725           gtk_paint_box (widget->style, widget->window,
 726                          GTK_STATE_NORMAL, GTK_SHADOW_IN,
 727                          area, widget, "buttondefault",
 728                          x, y, width, height);
 729
 730           x += default_border.left;
 731           y += default_border.top;
 732           width -= default_border.left + default_border.right;
 733           height -= default_border.top + default_border.bottom;
 734         }
 735       else if (GTK_WIDGET_CAN_DEFAULT (widget))
 736         {
 737           x += default_outside_border.left;
 738           y += default_outside_border.top;
 739           width -= default_outside_border.left + default_outside_border.right;
 740           height -= default_outside_border.top + default_outside_border.bottom;
 741         }
 742
 743       if (!interior_focus && GTK_WIDGET_HAS_FOCUS (widget))
 744         {
 745           x += 1;
 746           y += 1;
 747           width -= 2;
 748           height -= 2;
 749         }
 750
 751       if (GTK_WIDGET_STATE (widget) == GTK_STATE_ACTIVE)
 752         shadow_type = GTK_SHADOW_IN;
 753       else
 754         shadow_type = GTK_SHADOW_OUT;
 755
 756       if ((button->relief != GTK_RELIEF_NONE) ||
 757           ((GTK_WIDGET_STATE(widget) != GTK_STATE_NORMAL) &&
 758            (GTK_WIDGET_STATE(widget) != GTK_STATE_INSENSITIVE)))
 759         gtk_paint_box (widget->style, widget->window,
 760                        GTK_WIDGET_STATE (widget),
 761                        shadow_type, area, widget, "button",
 762                        x, y, width, height);
 763
 764       if (GTK_WIDGET_HAS_FOCUS (widget))
 765         {
 766           if (interior_focus)
 767             {
 768               x += widget->style->xthickness + 1;
 769               y += widget->style->ythickness + 1;
 770               width -= 2 * (widget->style->xthickness + 1);
 771               height -=  2 * (widget->style->xthickness + 1);
 772             }
 773           else
 774             {
 775               x -= 1;
 776               y -= 1;
 777               width += 2;
 778               height += 2;
 779             }
 780
 781           gtk_paint_focus (widget->style, widget->window,
 782                            area, widget, "button",
 783                            x, y, width - 1, height - 1);
 784         }
 785     }
 786 }
 787
 788 static gboolean
 789 gtk_button_expose (GtkWidget      *widget,
 790                    GdkEventExpose *event)
 791 {
 792   GtkBin *bin;
 793
 794   g_return_val_if_fail (widget != NULL, FALSE);
 795   g_return_val_if_fail (GTK_IS_BUTTON (widget), FALSE);
 796   g_return_val_if_fail (event != NULL, FALSE);
 797
 798   if (GTK_WIDGET_DRAWABLE (widget))
 799     {
 800       bin = GTK_BIN (widget);
 801
 802       gtk_button_paint (widget, &event->area);
 803
 804       (* GTK_WIDGET_CLASS (parent_class)->expose_event) (widget, event);
 805     }
 806
 807   return FALSE;
 808 }
 809
 810 static gboolean
 811 gtk_button_button_press (GtkWidget      *widget,
 812                          GdkEventButton *event)
 813 {
 814   GtkButton *button;
 815
 816   g_return_val_if_fail (widget != NULL, FALSE);
 817   g_return_val_if_fail (GTK_IS_BUTTON (widget), FALSE);
 818   g_return_val_if_fail (event != NULL, FALSE);
 819
 820   if (event->type == GDK_BUTTON_PRESS)
 821     {
 822       button = GTK_BUTTON (widget);
 823
 824       if (!GTK_WIDGET_HAS_FOCUS (widget))
 825         gtk_widget_grab_focus (widget);
 826
 827       if (event->button == 1)
 828         gtk_button_pressed (button);
 829     }
 830
 831   return TRUE;
 832 }
 833
 834 static gboolean
 835 gtk_button_button_release (GtkWidget      *widget,
 836                            GdkEventButton *event)
 837 {
 838   GtkButton *button;
 839
 840   g_return_val_if_fail (widget != NULL, FALSE);
 841   g_return_val_if_fail (GTK_IS_BUTTON (widget), FALSE);
 842   g_return_val_if_fail (event != NULL, FALSE);
 843
 844   if (event->button == 1)
 845     {
 846       button = GTK_BUTTON (widget);
 847       gtk_button_released (button);
 848     }
 849
 850   return TRUE;
 851 }
 852
 853 static gboolean
 854 gtk_button_key_release (GtkWidget   *widget,
 855                         GdkEventKey *event)
 856 {
 857   GtkButton *button = GTK_BUTTON (widget);
 858
 859   if (button->activate_timeout)
 860     {
 861       gtk_button_finish_activate (button, TRUE);
 862       return TRUE;
 863     }
 864   else if (GTK_WIDGET_CLASS (parent_class)->key_release_event)
 865     return GTK_WIDGET_CLASS (parent_class)->key_release_event (widget, event);
 866   else
 867     return FALSE;
 868 }
 869
 870 static gboolean
 871 gtk_button_enter_notify (GtkWidget        *widget,
 872                          GdkEventCrossing *event)
 873 {
 874   GtkButton *button;
 875   GtkWidget *event_widget;
 876
 877   g_return_val_if_fail (widget != NULL, FALSE);
 878   g_return_val_if_fail (GTK_IS_BUTTON (widget), FALSE);
 879   g_return_val_if_fail (event != NULL, FALSE);
 880
 881   button = GTK_BUTTON (widget);
 882   event_widget = gtk_get_event_widget ((GdkEvent*) event);
 883
 884   if ((event_widget == widget) &&
 885       (event->detail != GDK_NOTIFY_INFERIOR))
 886     {
 887       button->in_button = TRUE;
 888       gtk_button_enter (button);
 889     }
 890
 891   return FALSE;
 892 }
 893
 894 static gboolean
 895 gtk_button_leave_notify (GtkWidget        *widget,
 896                          GdkEventCrossing *event)
 897 {
 898   GtkButton *button;
 899   GtkWidget *event_widget;
 900
 901   g_return_val_if_fail (widget != NULL, FALSE);
 902   g_return_val_if_fail (GTK_IS_BUTTON (widget), FALSE);
 903   g_return_val_if_fail (event != NULL, FALSE);
 904
 905   button = GTK_BUTTON (widget);
 906   event_widget = gtk_get_event_widget ((GdkEvent*) event);
 907
 908   if ((event_widget == widget) &&
 909       (event->detail != GDK_NOTIFY_INFERIOR))
 910     {
 911       button->in_button = FALSE;
 912       gtk_button_leave (button);
 913     }
 914
 915   return FALSE;
 916 }
 917
 918 static void
 919 gtk_button_add (GtkContainer *container,
 920                 GtkWidget    *widget)
 921 {
 922   g_return_if_fail (container != NULL);
 923   g_return_if_fail (widget != NULL);
 924
 925   if (GTK_CONTAINER_CLASS (parent_class)->add)
 926     GTK_CONTAINER_CLASS (parent_class)->add (container, widget);
 927
 928   GTK_BUTTON (container)->child = GTK_BIN (container)->child;
 929 }
 930
 931 static void
 932 gtk_button_remove (GtkContainer *container,
 933                    GtkWidget    *widget)
 934 {
 935   g_return_if_fail (container != NULL);
 936   g_return_if_fail (widget != NULL);
 937
 938   if (GTK_CONTAINER_CLASS (parent_class)->remove)
 939     GTK_CONTAINER_CLASS (parent_class)->remove (container, widget);
 940
 941   GTK_BUTTON (container)->child = GTK_BIN (container)->child;
 942 }
 943
 944 static void
 945 gtk_real_button_pressed (GtkButton *button)
 946 {
 947   GtkStateType new_state;
 948
 949   g_return_if_fail (button != NULL);
 950   g_return_if_fail (GTK_IS_BUTTON (button));
 951
 952   if (button->activate_timeout)
 953     return;
 954
 955   button->button_down = TRUE;
 956
 957   new_state = (button->in_button ? GTK_STATE_ACTIVE : GTK_STATE_NORMAL);
 958
 959   if (GTK_WIDGET_STATE (button) != new_state)
 960     {
 961       gtk_widget_set_state (GTK_WIDGET (button), new_state);
 962       gtk_widget_queue_draw (GTK_WIDGET (button));
 963     }
 964 }
 965
 966 static void
 967 gtk_real_button_released (GtkButton *button)
 968 {
 969   GtkStateType new_state;
 970
 971   g_return_if_fail (button != NULL);
 972   g_return_if_fail (GTK_IS_BUTTON (button));
 973
 974   if (button->button_down)
 975     {
 976       button->button_down = FALSE;
 977
 978       if (button->activate_timeout)
 979         return;
 980
 981       if (button->in_button)
 982         gtk_button_clicked (button);
 983
 984       new_state = (button->in_button ? GTK_STATE_PRELIGHT : GTK_STATE_NORMAL);
 985
 986       if (GTK_WIDGET_STATE (button) != new_state)
 987         {
 988           gtk_widget_set_state (GTK_WIDGET (button), new_state);
 989           /* We _draw () instead of queue_draw so that if the operation
 990            * blocks, the label doesn't vanish.
 991            */
 992           gtk_widget_draw (GTK_WIDGET (button), NULL);
 993         }
 994     }
 995 }
 996
 997 static void
 998 gtk_real_button_enter (GtkButton *button)
 999 {
1000   GtkStateType new_state;
1001
1002   g_return_if_fail (button != NULL);
1003   g_return_if_fail (GTK_IS_BUTTON (button));
1004
1005   new_state = (button->button_down ? GTK_STATE_ACTIVE : GTK_STATE_PRELIGHT);
1006
1007   if (button->activate_timeout)
1008     return;
1009
1010   if (GTK_WIDGET_STATE (button) != new_state)
1011     {
1012       gtk_widget_set_state (GTK_WIDGET (button), new_state);
1013       gtk_widget_queue_draw (GTK_WIDGET (button));
1014     }
1015 }
1016
1017 static void
1018 gtk_real_button_leave (GtkButton *button)
1019 {
1020   g_return_if_fail (button != NULL);
1021   g_return_if_fail (GTK_IS_BUTTON (button));
1022
1023   if (button->activate_timeout)
1024     return;
1025
1026   if (GTK_WIDGET_STATE (button) != GTK_STATE_NORMAL)
1027     {
1028       gtk_widget_set_state (GTK_WIDGET (button), GTK_STATE_NORMAL);
1029       gtk_widget_queue_draw (GTK_WIDGET (button));
1030     }
1031 }
1032
1033 static gboolean
1034 button_activate_timeout (gpointer data)
1035 {
1036   gtk_button_finish_activate (data, TRUE);
1037
1038   return FALSE;
1039 }
1040
1041 static void
1042 gtk_real_button_activate (GtkButton *button)
1043 {
1044   GtkWidget *widget = GTK_WIDGET (button);
1045
1046   g_return_if_fail (button != NULL);
1047   g_return_if_fail (GTK_IS_BUTTON (button));
1048
1049   if (GTK_WIDGET_REALIZED (button) && !button->activate_timeout)
1050     {
1051       if (gdk_keyboard_grab (widget->window, TRUE,
1052                              gtk_get_current_event_time ()) == 0)
1053         {
1054           gtk_grab_add (widget);
1055
1056           button->activate_timeout = g_timeout_add (ACTIVATE_TIMEOUT,
1057                                                     button_activate_timeout,
1058                                                     button);
1059           button->button_down = TRUE;
1060           gtk_widget_set_state (widget, GTK_STATE_ACTIVE);
1061         }
1062     }
1063 }
1064
1065 static void
1066 gtk_button_finish_activate (GtkButton *button,
1067                             gboolean   do_it)
1068 {
1069   GtkWidget *widget = GTK_WIDGET (button);
1070
1071   g_source_remove (button->activate_timeout);
1072   button->activate_timeout = 0;
1073
1074   gdk_keyboard_ungrab (gtk_get_current_event_time ());
1075   gtk_grab_remove (widget);
1076
1077   button->button_down = FALSE;
1078   gtk_widget_set_state (GTK_WIDGET (button),
1079                         button->in_button ? GTK_STATE_PRELIGHT : GTK_STATE_NORMAL);
1080
1081   if (do_it)
1082     gtk_button_clicked (button);
1083 }
1084