gtkbutton.c 25.1 KB
Newer Older
Elliot Lee's avatar
Elliot Lee committed
1 2 3 4
/* GTK - The GIMP Toolkit
 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
 *
 * This library is free software; you can redistribute it and/or
5
 * modify it under the terms of the GNU Lesser General Public
Elliot Lee's avatar
Elliot Lee committed
6 7 8 9 10 11
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12
 * Lesser General Public License for more details.
Elliot Lee's avatar
Elliot Lee committed
13
 *
14
 * You should have received a copy of the GNU Lesser General Public
15 16 17
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
Elliot Lee's avatar
Elliot Lee committed
18
 */
19 20

/*
21
 * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS
22 23 24 25 26
 * file for a list of people on the GTK+ Team.  See the ChangeLog
 * files for a list of changes.  These files are distributed with
 * GTK+ at ftp://ftp.gtk.org/pub/gtk/. 
 */

27
#include <string.h>
Elliot Lee's avatar
Elliot Lee committed
28 29 30 31
#include "gtkbutton.h"
#include "gtklabel.h"
#include "gtkmain.h"
#include "gtksignal.h"
32 33 34 35
#include "gtkimage.h"
#include "gtkhbox.h"
#include "gtkstock.h"
#include "gtkiconfactory.h"
Elliot Lee's avatar
Elliot Lee committed
36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

#define CHILD_SPACING     1
#define DEFAULT_LEFT_POS  4
#define DEFAULT_TOP_POS   4
#define DEFAULT_SPACING   7


enum {
  PRESSED,
  RELEASED,
  CLICKED,
  ENTER,
  LEAVE,
  LAST_SIGNAL
};
51

52 53
enum {
  ARG_0,
54 55
  ARG_LABEL,
  ARG_RELIEF
56
};
57

Elliot Lee's avatar
Elliot Lee committed
58 59 60 61


static void gtk_button_class_init     (GtkButtonClass   *klass);
static void gtk_button_init           (GtkButton        *button);
62
static void gtk_button_set_arg        (GtkObject        *object,
63 64
				       GtkArg           *arg,
				       guint		 arg_id);
65
static void gtk_button_get_arg        (GtkObject        *object,
66 67
				       GtkArg           *arg,
				       guint		 arg_id);
Elliot Lee's avatar
Elliot Lee committed
68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92
static void gtk_button_realize        (GtkWidget        *widget);
static void gtk_button_size_request   (GtkWidget        *widget,
				       GtkRequisition   *requisition);
static void gtk_button_size_allocate  (GtkWidget        *widget,
				       GtkAllocation    *allocation);
static void gtk_button_paint          (GtkWidget        *widget,
				       GdkRectangle     *area);
static gint gtk_button_expose         (GtkWidget        *widget,
				       GdkEventExpose   *event);
static gint gtk_button_button_press   (GtkWidget        *widget,
				       GdkEventButton   *event);
static gint gtk_button_button_release (GtkWidget        *widget,
				       GdkEventButton   *event);
static gint gtk_button_enter_notify   (GtkWidget        *widget,
				       GdkEventCrossing *event);
static gint gtk_button_leave_notify   (GtkWidget        *widget,
				       GdkEventCrossing *event);
static void gtk_button_add            (GtkContainer     *container,
				       GtkWidget        *widget);
static void gtk_button_remove         (GtkContainer     *container,
				       GtkWidget        *widget);
static void gtk_real_button_pressed   (GtkButton        *button);
static void gtk_real_button_released  (GtkButton        *button);
static void gtk_real_button_enter     (GtkButton        *button);
static void gtk_real_button_leave     (GtkButton        *button);
93
static GtkType gtk_button_child_type  (GtkContainer     *container);
Elliot Lee's avatar
Elliot Lee committed
94 95


96
static GtkBinClass *parent_class = NULL;
97
static guint button_signals[LAST_SIGNAL] = { 0 };
Elliot Lee's avatar
Elliot Lee committed
98 99


100
GtkType
101
gtk_button_get_type (void)
Elliot Lee's avatar
Elliot Lee committed
102
{
103
  static GtkType button_type = 0;
Elliot Lee's avatar
Elliot Lee committed
104 105 106

  if (!button_type)
    {
107
      static const GTypeInfo button_info =
Elliot Lee's avatar
Elliot Lee committed
108 109
      {
	sizeof (GtkButtonClass),
110 111 112 113 114 115 116 117
	NULL,		/* base_init */
	NULL,		/* base_finalize */
	(GClassInitFunc) gtk_button_class_init,
	NULL,		/* class_finalize */
	NULL,		/* class_data */
	sizeof (GtkButton),
	16,		/* n_preallocs */
	(GInstanceInitFunc) gtk_button_init,
Elliot Lee's avatar
Elliot Lee committed
118 119
      };

120
      button_type = g_type_register_static (GTK_TYPE_BIN, "GtkButton", &button_info, 0);
Elliot Lee's avatar
Elliot Lee committed
121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136
    }

  return button_type;
}

static void
gtk_button_class_init (GtkButtonClass *klass)
{
  GtkObjectClass *object_class;
  GtkWidgetClass *widget_class;
  GtkContainerClass *container_class;

  object_class = (GtkObjectClass*) klass;
  widget_class = (GtkWidgetClass*) klass;
  container_class = (GtkContainerClass*) klass;

137
  parent_class = gtk_type_class (GTK_TYPE_BIN);
Elliot Lee's avatar
Elliot Lee committed
138

139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161

  object_class->set_arg = gtk_button_set_arg;
  object_class->get_arg = gtk_button_get_arg;

  widget_class->realize = gtk_button_realize;
  widget_class->size_request = gtk_button_size_request;
  widget_class->size_allocate = gtk_button_size_allocate;
  widget_class->expose_event = gtk_button_expose;
  widget_class->button_press_event = gtk_button_button_press;
  widget_class->button_release_event = gtk_button_button_release;
  widget_class->enter_notify_event = gtk_button_enter_notify;
  widget_class->leave_notify_event = gtk_button_leave_notify;

  container_class->add = gtk_button_add;
  container_class->remove = gtk_button_remove;
  container_class->child_type = gtk_button_child_type;

  klass->pressed = gtk_real_button_pressed;
  klass->released = gtk_real_button_released;
  klass->clicked = NULL;
  klass->enter = gtk_real_button_enter;
  klass->leave = gtk_real_button_leave;

162
  gtk_object_add_arg_type ("GtkButton::label", GTK_TYPE_STRING, GTK_ARG_READWRITE, ARG_LABEL);
163
  gtk_object_add_arg_type ("GtkButton::relief", GTK_TYPE_RELIEF_STYLE, GTK_ARG_READWRITE, ARG_RELIEF);
Elliot Lee's avatar
Elliot Lee committed
164 165 166 167

  button_signals[PRESSED] =
    gtk_signal_new ("pressed",
                    GTK_RUN_FIRST,
168
                    GTK_CLASS_TYPE (object_class),
Elliot Lee's avatar
Elliot Lee committed
169
                    GTK_SIGNAL_OFFSET (GtkButtonClass, pressed),
170
                    gtk_marshal_VOID__VOID,
Elliot Lee's avatar
Elliot Lee committed
171 172 173 174
		    GTK_TYPE_NONE, 0);
  button_signals[RELEASED] =
    gtk_signal_new ("released",
                    GTK_RUN_FIRST,
175
                    GTK_CLASS_TYPE (object_class),
Elliot Lee's avatar
Elliot Lee committed
176
                    GTK_SIGNAL_OFFSET (GtkButtonClass, released),
177
                    gtk_marshal_VOID__VOID,
Elliot Lee's avatar
Elliot Lee committed
178 179 180
		    GTK_TYPE_NONE, 0);
  button_signals[CLICKED] =
    gtk_signal_new ("clicked",
181
                    GTK_RUN_FIRST | GTK_RUN_ACTION,
182
                    GTK_CLASS_TYPE (object_class),
Elliot Lee's avatar
Elliot Lee committed
183
                    GTK_SIGNAL_OFFSET (GtkButtonClass, clicked),
184
                    gtk_marshal_VOID__VOID,
Elliot Lee's avatar
Elliot Lee committed
185
		    GTK_TYPE_NONE, 0);
186
  widget_class->activate_signal = button_signals[CLICKED];
Elliot Lee's avatar
Elliot Lee committed
187 188 189
  button_signals[ENTER] =
    gtk_signal_new ("enter",
                    GTK_RUN_FIRST,
190
                    GTK_CLASS_TYPE (object_class),
191
                    GTK_SIGNAL_OFFSET (GtkButtonClass, enter),
192
                    gtk_marshal_VOID__VOID,
Elliot Lee's avatar
Elliot Lee committed
193 194 195 196
		    GTK_TYPE_NONE, 0);
  button_signals[LEAVE] =
    gtk_signal_new ("leave",
                    GTK_RUN_FIRST,
197
                    GTK_CLASS_TYPE (object_class),
198
                    GTK_SIGNAL_OFFSET (GtkButtonClass, leave),
199
                    gtk_marshal_VOID__VOID,
Elliot Lee's avatar
Elliot Lee committed
200 201 202 203 204 205
		    GTK_TYPE_NONE, 0);
}

static void
gtk_button_init (GtkButton *button)
{
206
  GTK_WIDGET_SET_FLAGS (button, GTK_CAN_FOCUS | GTK_RECEIVES_DEFAULT);
207
  GTK_WIDGET_UNSET_FLAGS (button, GTK_NO_WINDOW);
Elliot Lee's avatar
Elliot Lee committed
208 209 210 211

  button->child = NULL;
  button->in_button = FALSE;
  button->button_down = FALSE;
212
  button->relief = GTK_RELIEF_NORMAL;
Elliot Lee's avatar
Elliot Lee committed
213 214
}

215 216 217
static GtkType
gtk_button_child_type  (GtkContainer     *container)
{
218
  if (!GTK_BIN (container)->child)
219 220 221 222 223
    return GTK_TYPE_WIDGET;
  else
    return GTK_TYPE_NONE;
}

Elliot Lee's avatar
Elliot Lee committed
224
static void
225
gtk_button_set_arg (GtkObject *object,
226 227
		    GtkArg    *arg,
		    guint      arg_id)
Elliot Lee's avatar
Elliot Lee committed
228
{
229 230 231
  GtkButton *button;

  button = GTK_BUTTON (object);
Elliot Lee's avatar
Elliot Lee committed
232

233 234
  switch (arg_id)
    {
235
      GtkWidget *child;
236

237
    case ARG_LABEL:
238 239 240 241 242 243 244
      child = GTK_BIN (button)->child;
      if (!child)
	child = gtk_widget_new (GTK_TYPE_LABEL,
				"visible", TRUE,
				"parent", button,
				NULL);
      if (GTK_IS_LABEL (child))
Owen Taylor's avatar
Owen Taylor committed
245
	gtk_label_set_text (GTK_LABEL (child),
246
		       GTK_VALUE_STRING (*arg) ? GTK_VALUE_STRING (*arg) : "");
247
      break;
248 249 250
    case ARG_RELIEF:
      gtk_button_set_relief (button, GTK_VALUE_ENUM (*arg));
      break;
251 252 253 254 255 256
    default:
      break;
    }
}

static void
257
gtk_button_get_arg (GtkObject *object,
258 259 260
		    GtkArg    *arg,
		    guint      arg_id)
{
261 262 263 264
  GtkButton *button;

  button = GTK_BUTTON (object);

265 266 267
  switch (arg_id)
    {
    case ARG_LABEL:
268 269
      if (GTK_BIN (button)->child && GTK_IS_LABEL (GTK_BIN (button)->child))
	GTK_VALUE_STRING (*arg) = g_strdup (GTK_LABEL (GTK_BIN (button)->child)->label);
270 271 272
      else
	GTK_VALUE_STRING (*arg) = NULL;
      break;
273 274 275
    case ARG_RELIEF:
      GTK_VALUE_ENUM (*arg) = gtk_button_get_relief (button);
      break;
Tim Janik's avatar
Tim Janik committed
276 277 278
    default:
      arg->type = GTK_TYPE_INVALID;
      break;
Elliot Lee's avatar
Elliot Lee committed
279 280 281 282
    }
}

GtkWidget*
283
gtk_button_new (void)
Elliot Lee's avatar
Elliot Lee committed
284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303
{
  return GTK_WIDGET (gtk_type_new (gtk_button_get_type ()));
}

GtkWidget*
gtk_button_new_with_label (const gchar *label)
{
  GtkWidget *button;
  GtkWidget *label_widget;

  button = gtk_button_new ();
  label_widget = gtk_label_new (label);
  gtk_misc_set_alignment (GTK_MISC (label_widget), 0.5, 0.5);

  gtk_container_add (GTK_CONTAINER (button), label_widget);
  gtk_widget_show (label_widget);

  return button;
}

304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390
GtkWidget*
gtk_button_new_stock (const gchar   *stock_id,
                      GtkAccelGroup *accel_group)
{
  GtkWidget *button;
  GtkStockItem item;

  if (gtk_stock_lookup (stock_id, &item))
    {
      GtkWidget *label;
      GtkWidget *image;
      GtkWidget *hbox;
      guint keyval;
      
      button = gtk_button_new ();

      label = gtk_label_new (NULL);
      keyval = gtk_label_parse_uline (GTK_LABEL (label),
                                      item.label);

      if (keyval && accel_group)
        {
          gtk_widget_add_accelerator (button,
                                      "clicked",
                                      accel_group,
                                      keyval,
                                      GDK_MOD1_MASK,
                                      GTK_ACCEL_LOCKED);
        }

      /* Also add the stock accelerator if one was specified. */
      if (item.keyval && accel_group)
        {
          gtk_widget_add_accelerator (button,
                                      "clicked",
                                      accel_group,
                                      item.keyval,
                                      item.modifier,
                                      GTK_ACCEL_LOCKED);
        }

      image = gtk_image_new_from_stock (stock_id, GTK_ICON_SIZE_BUTTON);
      hbox = gtk_hbox_new (FALSE, 0);

      gtk_box_pack_start (GTK_BOX (hbox), image, FALSE, FALSE, 2);
      gtk_box_pack_end (GTK_BOX (hbox), label, TRUE, TRUE, 2);
      
      gtk_container_add (GTK_CONTAINER (button), hbox);
      gtk_widget_show_all (hbox);
    }
  else
    {
      button = gtk_button_new_accel (stock_id, accel_group);
    }
  
  return button;
}

GtkWidget*
gtk_button_new_accel (const gchar   *uline_label,
                      GtkAccelGroup *accel_group)
{
  GtkWidget *button;
  GtkWidget *label;
  guint keyval;

  button = gtk_button_new ();
  
  label = gtk_label_new (NULL);
  keyval = gtk_label_parse_uline (GTK_LABEL (label), uline_label);

  if (keyval && accel_group)
    {
      gtk_widget_add_accelerator (button,
                                  "clicked",
                                  accel_group,
                                  keyval,
                                  GDK_MOD1_MASK,
                                  GTK_ACCEL_LOCKED);
    }
  
  gtk_container_add (GTK_CONTAINER (button), label);
  gtk_widget_show (label);

  return button;
}

Elliot Lee's avatar
Elliot Lee committed
391 392 393
void
gtk_button_pressed (GtkButton *button)
{
394 395 396
  g_return_if_fail (button != NULL);
  g_return_if_fail (GTK_IS_BUTTON (button));

Elliot Lee's avatar
Elliot Lee committed
397 398 399 400 401 402
  gtk_signal_emit (GTK_OBJECT (button), button_signals[PRESSED]);
}

void
gtk_button_released (GtkButton *button)
{
403 404 405
  g_return_if_fail (button != NULL);
  g_return_if_fail (GTK_IS_BUTTON (button));

Elliot Lee's avatar
Elliot Lee committed
406 407 408 409 410 411
  gtk_signal_emit (GTK_OBJECT (button), button_signals[RELEASED]);
}

void
gtk_button_clicked (GtkButton *button)
{
412 413 414
  g_return_if_fail (button != NULL);
  g_return_if_fail (GTK_IS_BUTTON (button));

Elliot Lee's avatar
Elliot Lee committed
415 416 417 418 419 420
  gtk_signal_emit (GTK_OBJECT (button), button_signals[CLICKED]);
}

void
gtk_button_enter (GtkButton *button)
{
421 422 423
  g_return_if_fail (button != NULL);
  g_return_if_fail (GTK_IS_BUTTON (button));

Elliot Lee's avatar
Elliot Lee committed
424 425 426 427 428 429
  gtk_signal_emit (GTK_OBJECT (button), button_signals[ENTER]);
}

void
gtk_button_leave (GtkButton *button)
{
430 431 432
  g_return_if_fail (button != NULL);
  g_return_if_fail (GTK_IS_BUTTON (button));

Elliot Lee's avatar
Elliot Lee committed
433 434 435
  gtk_signal_emit (GTK_OBJECT (button), button_signals[LEAVE]);
}

436 437 438 439 440 441 442 443
void
gtk_button_set_relief (GtkButton *button,
		       GtkReliefStyle newrelief)
{
  g_return_if_fail (button != NULL);
  g_return_if_fail (GTK_IS_BUTTON (button));

  button->relief = newrelief;
444
  gtk_widget_queue_draw (GTK_WIDGET (button));
445 446 447
}

GtkReliefStyle
448
gtk_button_get_relief (GtkButton *button)
449 450 451 452 453 454 455
{
  g_return_val_if_fail (button != NULL, GTK_RELIEF_NORMAL);
  g_return_val_if_fail (GTK_IS_BUTTON (button), GTK_RELIEF_NORMAL);

  return button->relief;
}

Elliot Lee's avatar
Elliot Lee committed
456 457 458 459 460 461
static void
gtk_button_realize (GtkWidget *widget)
{
  GtkButton *button;
  GdkWindowAttr attributes;
  gint attributes_mask;
Owen Taylor's avatar
Owen Taylor committed
462
  gint border_width;
Elliot Lee's avatar
Elliot Lee committed
463 464 465 466 467 468 469

  g_return_if_fail (widget != NULL);
  g_return_if_fail (GTK_IS_BUTTON (widget));

  button = GTK_BUTTON (widget);
  GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);

Owen Taylor's avatar
Owen Taylor committed
470 471
  border_width = GTK_CONTAINER (widget)->border_width;

Elliot Lee's avatar
Elliot Lee committed
472
  attributes.window_type = GDK_WINDOW_CHILD;
Owen Taylor's avatar
Owen Taylor committed
473 474 475 476
  attributes.x = widget->allocation.x + border_width;
  attributes.y = widget->allocation.y + border_width;
  attributes.width = widget->allocation.width - border_width * 2;
  attributes.height = widget->allocation.height - border_width * 2;
Elliot Lee's avatar
Elliot Lee committed
477 478 479 480 481 482 483 484 485 486 487 488
  attributes.wclass = GDK_INPUT_OUTPUT;
  attributes.visual = gtk_widget_get_visual (widget);
  attributes.colormap = gtk_widget_get_colormap (widget);
  attributes.event_mask = gtk_widget_get_events (widget);
  attributes.event_mask |= (GDK_EXPOSURE_MASK |
			    GDK_BUTTON_PRESS_MASK |
			    GDK_BUTTON_RELEASE_MASK |
			    GDK_ENTER_NOTIFY_MASK |
			    GDK_LEAVE_NOTIFY_MASK);

  attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;

489
  widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask);
Elliot Lee's avatar
Elliot Lee committed
490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508
  gdk_window_set_user_data (widget->window, button);

  widget->style = gtk_style_attach (widget->style, widget->window);
  gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
}

static void
gtk_button_size_request (GtkWidget      *widget,
			 GtkRequisition *requisition)
{
  GtkButton *button;

  g_return_if_fail (widget != NULL);
  g_return_if_fail (GTK_IS_BUTTON (widget));
  g_return_if_fail (requisition != NULL);

  button = GTK_BUTTON (widget);

  requisition->width = (GTK_CONTAINER (widget)->border_width + CHILD_SPACING +
509
			GTK_WIDGET (widget)->style->xthickness) * 2;
Elliot Lee's avatar
Elliot Lee committed
510
  requisition->height = (GTK_CONTAINER (widget)->border_width + CHILD_SPACING +
511
			 GTK_WIDGET (widget)->style->ythickness) * 2;
Elliot Lee's avatar
Elliot Lee committed
512 513 514

  if (GTK_WIDGET_CAN_DEFAULT (widget))
    {
515
      requisition->width += (GTK_WIDGET (widget)->style->xthickness * 2 +
Elliot Lee's avatar
Elliot Lee committed
516
			     DEFAULT_SPACING);
517
      requisition->height += (GTK_WIDGET (widget)->style->ythickness * 2 +
Elliot Lee's avatar
Elliot Lee committed
518 519 520
			      DEFAULT_SPACING);
    }

521
  if (GTK_BIN (button)->child && GTK_WIDGET_VISIBLE (GTK_BIN (button)->child))
Elliot Lee's avatar
Elliot Lee committed
522
    {
523
      GtkRequisition child_requisition;
Elliot Lee's avatar
Elliot Lee committed
524

525 526 527 528
      gtk_widget_size_request (GTK_BIN (button)->child, &child_requisition);

      requisition->width += child_requisition.width;
      requisition->height += child_requisition.height;
Elliot Lee's avatar
Elliot Lee committed
529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555
    }
}

static void
gtk_button_size_allocate (GtkWidget     *widget,
			  GtkAllocation *allocation)
{
  GtkButton *button;
  GtkAllocation child_allocation;
  gint border_width;

  g_return_if_fail (widget != NULL);
  g_return_if_fail (GTK_IS_BUTTON (widget));
  g_return_if_fail (allocation != NULL);

  widget->allocation = *allocation;
  border_width = GTK_CONTAINER (widget)->border_width;

  if (GTK_WIDGET_REALIZED (widget))
    gdk_window_move_resize (widget->window,
			    widget->allocation.x + border_width,
			    widget->allocation.y + border_width,
			    widget->allocation.width - border_width * 2,
			    widget->allocation.height - border_width * 2);

  button = GTK_BUTTON (widget);

556
  if (GTK_BIN (button)->child && GTK_WIDGET_VISIBLE (GTK_BIN (button)->child))
Elliot Lee's avatar
Elliot Lee committed
557
    {
558 559
      child_allocation.x = (CHILD_SPACING + GTK_WIDGET (widget)->style->xthickness);
      child_allocation.y = (CHILD_SPACING + GTK_WIDGET (widget)->style->ythickness);
Elliot Lee's avatar
Elliot Lee committed
560

561
      child_allocation.width = MAX (1, (gint)widget->allocation.width - child_allocation.x * 2 -
Owen Taylor's avatar
Owen Taylor committed
562
	                         border_width * 2);
563
      child_allocation.height = MAX (1, (gint)widget->allocation.height - child_allocation.y * 2 -
Owen Taylor's avatar
Owen Taylor committed
564
	                          border_width * 2);
Elliot Lee's avatar
Elliot Lee committed
565 566 567

      if (GTK_WIDGET_CAN_DEFAULT (button))
	{
568
	  child_allocation.x += (GTK_WIDGET (widget)->style->xthickness +
Elliot Lee's avatar
Elliot Lee committed
569
				 DEFAULT_LEFT_POS);
570
	  child_allocation.y += (GTK_WIDGET (widget)->style->ythickness +
Elliot Lee's avatar
Elliot Lee committed
571
				 DEFAULT_TOP_POS);
572
	  child_allocation.width =  MAX (1, (gint)child_allocation.width -
573
					 (gint)(GTK_WIDGET (widget)->style->xthickness * 2 + DEFAULT_SPACING));
574
	  child_allocation.height = MAX (1, (gint)child_allocation.height -
575
					 (gint)(GTK_WIDGET (widget)->style->xthickness * 2 + DEFAULT_SPACING));
Elliot Lee's avatar
Elliot Lee committed
576 577
	}

578
      gtk_widget_size_allocate (GTK_BIN (button)->child, &child_allocation);
Elliot Lee's avatar
Elliot Lee committed
579 580 581
    }
}

582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607
/*
 * +------------------------------------------------+
 * |                   BORDER                       |
 * |  +------------------------------------------+  |
 * |  |\\\\\\\\\\\\\\\\DEFAULT\\\\\\\\\\\\\\\\\  |  |
 * |  |\\+------------------------------------+  |  |
 * |  |\\| |           SPACING       3      | |  |  |
 * |  |\\| +--------------------------------+ |  |  |
 * |  |\\| |########## FOCUS ###############| |  |  |
 * |  |\\| |#+----------------------------+#| |  |  |
 * |  |\\| |#|         RELIEF            \|#| |  |  |
 * |  |\\| |#|  +-----------------------+\|#| |  |  |
 * |  |\\|1|#|  +     THE TEXT          +\|#|2|  |  |
 * |  |\\| |#|  +-----------------------+\|#| |  |  |
 * |  |\\| |#| \\\\\ ythickness \\\\\\\\\\|#| |  |  |
 * |  |\\| |#+----------------------------+#| |  |  |
 * |  |\\| |########### 1 ##################| |  |  |
 * |  |\\| +--------------------------------+ |  |  |
 * |  |\\| |        default spacing   4     | |  |  |
 * |  |\\+------------------------------------+  |  |
 * |  |\            ythickness                   |  |
 * |  +------------------------------------------+  |
 * |                border_width                    |
 * +------------------------------------------------+
 */

Elliot Lee's avatar
Elliot Lee committed
608 609 610 611 612 613 614 615
static void
gtk_button_paint (GtkWidget    *widget,
		  GdkRectangle *area)
{
  GtkButton *button;
  GtkShadowType shadow_type;
  gint width, height;
  gint x, y;
616
   
Elliot Lee's avatar
Elliot Lee committed
617 618 619
  if (GTK_WIDGET_DRAWABLE (widget))
    {
      button = GTK_BUTTON (widget);
620
	
Elliot Lee's avatar
Elliot Lee committed
621 622 623 624 625
      x = 0;
      y = 0;
      width = widget->allocation.width - GTK_CONTAINER (widget)->border_width * 2;
      height = widget->allocation.height - GTK_CONTAINER (widget)->border_width * 2;

626 627 628 629 630 631 632 633 634 635 636 637
      gdk_window_set_back_pixmap (widget->window, NULL, TRUE);
      gdk_window_clear_area (widget->window, area->x, area->y, area->width, area->height);

      if (GTK_WIDGET_HAS_DEFAULT (widget) &&
	  GTK_BUTTON (widget)->relief == GTK_RELIEF_NORMAL)
	{
	  gtk_paint_box (widget->style, widget->window,
			 GTK_STATE_NORMAL, GTK_SHADOW_IN,
			 area, widget, "buttondefault",
			 x, y, width, height);
	}

Elliot Lee's avatar
Elliot Lee committed
638 639
      if (GTK_WIDGET_CAN_DEFAULT (widget))
	{
640 641
	  x += widget->style->xthickness;
	  y += widget->style->ythickness;
Elliot Lee's avatar
Elliot Lee committed
642 643 644 645 646
	  width -= 2 * x + DEFAULT_SPACING;
	  height -= 2 * y + DEFAULT_SPACING;
	  x += DEFAULT_LEFT_POS;
	  y += DEFAULT_TOP_POS;
	}
647
       
Elliot Lee's avatar
Elliot Lee committed
648 649 650 651 652 653 654
      if (GTK_WIDGET_HAS_FOCUS (widget))
	{
	  x += 1;
	  y += 1;
	  width -= 2;
	  height -= 2;
	}
655
	
Elliot Lee's avatar
Elliot Lee committed
656 657 658 659 660
      if (GTK_WIDGET_STATE (widget) == GTK_STATE_ACTIVE)
	shadow_type = GTK_SHADOW_IN;
      else
	shadow_type = GTK_SHADOW_OUT;

661 662 663 664 665 666 667 668
      if ((button->relief != GTK_RELIEF_NONE) ||
	  ((GTK_WIDGET_STATE(widget) != GTK_STATE_NORMAL) &&
	   (GTK_WIDGET_STATE(widget) != GTK_STATE_INSENSITIVE)))
	gtk_paint_box (widget->style, widget->window,
		       GTK_WIDGET_STATE (widget),
		       shadow_type, area, widget, "button",
		       x, y, width, height);
       
Elliot Lee's avatar
Elliot Lee committed
669 670 671 672 673 674
      if (GTK_WIDGET_HAS_FOCUS (widget))
	{
	  x -= 1;
	  y -= 1;
	  width += 2;
	  height += 2;
Elliot Lee's avatar
Elliot Lee committed
675

676 677 678
	  gtk_paint_focus (widget->style, widget->window,
			   area, widget, "button",
			   x, y, width - 1, height - 1);
Elliot Lee's avatar
Elliot Lee committed
679 680 681 682 683 684 685 686
	}
    }
}

static gint
gtk_button_expose (GtkWidget      *widget,
		   GdkEventExpose *event)
{
687
  GtkBin *bin;
Elliot Lee's avatar
Elliot Lee committed
688 689 690 691 692 693 694 695
  GdkEventExpose child_event;

  g_return_val_if_fail (widget != NULL, FALSE);
  g_return_val_if_fail (GTK_IS_BUTTON (widget), FALSE);
  g_return_val_if_fail (event != NULL, FALSE);

  if (GTK_WIDGET_DRAWABLE (widget))
    {
Owen Taylor's avatar
Owen Taylor committed
696
      bin = GTK_BIN (widget);
697
      
Elliot Lee's avatar
Elliot Lee committed
698 699 700
      gtk_button_paint (widget, &event->area);

      child_event = *event;
Owen Taylor's avatar
Owen Taylor committed
701 702 703
      if (bin->child && GTK_WIDGET_NO_WINDOW (bin->child) &&
	  gtk_widget_intersect (bin->child, &event->area, &child_event.area))
	gtk_widget_event (bin->child, (GdkEvent*) &child_event);
Elliot Lee's avatar
Elliot Lee committed
704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726
    }

  return FALSE;
}

static gint
gtk_button_button_press (GtkWidget      *widget,
			 GdkEventButton *event)
{
  GtkButton *button;

  g_return_val_if_fail (widget != NULL, FALSE);
  g_return_val_if_fail (GTK_IS_BUTTON (widget), FALSE);
  g_return_val_if_fail (event != NULL, FALSE);

  if (event->type == GDK_BUTTON_PRESS)
    {
      button = GTK_BUTTON (widget);

      if (!GTK_WIDGET_HAS_FOCUS (widget))
	gtk_widget_grab_focus (widget);

      if (event->button == 1)
727
	gtk_button_pressed (button);
Elliot Lee's avatar
Elliot Lee committed
728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806
    }

  return TRUE;
}

static gint
gtk_button_button_release (GtkWidget      *widget,
			   GdkEventButton *event)
{
  GtkButton *button;

  g_return_val_if_fail (widget != NULL, FALSE);
  g_return_val_if_fail (GTK_IS_BUTTON (widget), FALSE);
  g_return_val_if_fail (event != NULL, FALSE);

  if (event->button == 1)
    {
      button = GTK_BUTTON (widget);
      gtk_button_released (button);
    }

  return TRUE;
}

static gint
gtk_button_enter_notify (GtkWidget        *widget,
			 GdkEventCrossing *event)
{
  GtkButton *button;
  GtkWidget *event_widget;

  g_return_val_if_fail (widget != NULL, FALSE);
  g_return_val_if_fail (GTK_IS_BUTTON (widget), FALSE);
  g_return_val_if_fail (event != NULL, FALSE);

  button = GTK_BUTTON (widget);
  event_widget = gtk_get_event_widget ((GdkEvent*) event);

  if ((event_widget == widget) &&
      (event->detail != GDK_NOTIFY_INFERIOR))
    {
      button->in_button = TRUE;
      gtk_button_enter (button);
    }

  return FALSE;
}

static gint
gtk_button_leave_notify (GtkWidget        *widget,
			 GdkEventCrossing *event)
{
  GtkButton *button;
  GtkWidget *event_widget;

  g_return_val_if_fail (widget != NULL, FALSE);
  g_return_val_if_fail (GTK_IS_BUTTON (widget), FALSE);
  g_return_val_if_fail (event != NULL, FALSE);

  button = GTK_BUTTON (widget);
  event_widget = gtk_get_event_widget ((GdkEvent*) event);

  if ((event_widget == widget) &&
      (event->detail != GDK_NOTIFY_INFERIOR))
    {
      button->in_button = FALSE;
      gtk_button_leave (button);
    }

  return FALSE;
}

static void
gtk_button_add (GtkContainer *container,
		GtkWidget    *widget)
{
  g_return_if_fail (container != NULL);
  g_return_if_fail (widget != NULL);

807 808
  if (GTK_CONTAINER_CLASS (parent_class)->add)
    GTK_CONTAINER_CLASS (parent_class)->add (container, widget);
Elliot Lee's avatar
Elliot Lee committed
809

810
  GTK_BUTTON (container)->child = GTK_BIN (container)->child;
Elliot Lee's avatar
Elliot Lee committed
811 812 813 814 815 816 817
}

static void
gtk_button_remove (GtkContainer *container,
		   GtkWidget    *widget)
{
  g_return_if_fail (container != NULL);
Tim Janik's avatar
Tim Janik committed
818
  g_return_if_fail (widget != NULL);
Elliot Lee's avatar
Elliot Lee committed
819

820 821
  if (GTK_CONTAINER_CLASS (parent_class)->remove)
    GTK_CONTAINER_CLASS (parent_class)->remove (container, widget);
Elliot Lee's avatar
Elliot Lee committed
822

823
  GTK_BUTTON (container)->child = GTK_BIN (container)->child;
Elliot Lee's avatar
Elliot Lee committed
824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864
}

static void
gtk_real_button_pressed (GtkButton *button)
{
  GtkStateType new_state;

  g_return_if_fail (button != NULL);
  g_return_if_fail (GTK_IS_BUTTON (button));

  button->button_down = TRUE;

  new_state = (button->in_button ? GTK_STATE_ACTIVE : GTK_STATE_NORMAL);

  if (GTK_WIDGET_STATE (button) != new_state)
    {
      gtk_widget_set_state (GTK_WIDGET (button), new_state);
      gtk_widget_queue_draw (GTK_WIDGET (button));
    }
}

static void
gtk_real_button_released (GtkButton *button)
{
  GtkStateType new_state;

  g_return_if_fail (button != NULL);
  g_return_if_fail (GTK_IS_BUTTON (button));

  if (button->button_down)
    {
      button->button_down = FALSE;

      if (button->in_button)
	gtk_button_clicked (button);

      new_state = (button->in_button ? GTK_STATE_PRELIGHT : GTK_STATE_NORMAL);

      if (GTK_WIDGET_STATE (button) != new_state)
	{
	  gtk_widget_set_state (GTK_WIDGET (button), new_state);
865 866 867 868
	  /* We _draw () instead of queue_draw so that if the operation
	   * blocks, the label doesn't vanish.
	   */
	  gtk_widget_draw (GTK_WIDGET (button), NULL);
Elliot Lee's avatar
Elliot Lee committed
869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901
	}
    }
}

static void
gtk_real_button_enter (GtkButton *button)
{
  GtkStateType new_state;

  g_return_if_fail (button != NULL);
  g_return_if_fail (GTK_IS_BUTTON (button));

  new_state = (button->button_down ? GTK_STATE_ACTIVE : GTK_STATE_PRELIGHT);

  if (GTK_WIDGET_STATE (button) != new_state)
    {
      gtk_widget_set_state (GTK_WIDGET (button), new_state);
      gtk_widget_queue_draw (GTK_WIDGET (button));
    }
}

static void
gtk_real_button_leave (GtkButton *button)
{
  g_return_if_fail (button != NULL);
  g_return_if_fail (GTK_IS_BUTTON (button));

  if (GTK_WIDGET_STATE (button) != GTK_STATE_NORMAL)
    {
      gtk_widget_set_state (GTK_WIDGET (button), GTK_STATE_NORMAL);
      gtk_widget_queue_draw (GTK_WIDGET (button));
    }
}