gtkbutton.c 29.7 KB
Newer Older
Elliot Lee's avatar
Elliot Lee committed
1 2 3 4 5 6 7 8 9 10 11 12 13 14
/* 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
 * modify it under the terms of the GNU Library General Public
 * 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library 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
#include <string.h>
Elliot Lee's avatar
Elliot Lee committed
20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39
#include "gtkbutton.h"
#include "gtklabel.h"
#include "gtkmain.h"
#include "gtksignal.h"


#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
};
40 41 42 43
enum {
  ARG_0,
  ARG_LABEL
};
44

Elliot Lee's avatar
Elliot Lee committed
45 46 47 48


static void gtk_button_class_init     (GtkButtonClass   *klass);
static void gtk_button_init           (GtkButton        *button);
49 50 51
static void gtk_button_set_arg        (GtkButton        *button,
				       GtkArg           *arg,
				       guint		 arg_id);
52 53 54
static void gtk_button_get_arg        (GtkButton        *button,
				       GtkArg           *arg,
				       guint		 arg_id);
Elliot Lee's avatar
Elliot Lee committed
55 56 57 58 59 60 61 62 63 64 65 66 67 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_map            (GtkWidget        *widget);
static void gtk_button_unmap          (GtkWidget        *widget);
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 void gtk_button_draw           (GtkWidget        *widget,
				       GdkRectangle     *area);
static void gtk_button_draw_focus     (GtkWidget        *widget);
static void gtk_button_draw_default   (GtkWidget        *widget);
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 gint gtk_button_focus_in       (GtkWidget        *widget,
				       GdkEventFocus    *event);
static gint gtk_button_focus_out      (GtkWidget        *widget,
				       GdkEventFocus    *event);
static void gtk_button_add            (GtkContainer     *container,
				       GtkWidget        *widget);
static void gtk_button_remove         (GtkContainer     *container,
				       GtkWidget        *widget);
static void gtk_button_foreach        (GtkContainer     *container,
				       GtkCallback       callback,
				       gpointer          callback_data);
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 GtkContainerClass *parent_class;
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
104 105 106 107 108 109 110 111 112 113

  if (!button_type)
    {
      GtkTypeInfo button_info =
      {
	"GtkButton",
	sizeof (GtkButton),
	sizeof (GtkButtonClass),
	(GtkClassInitFunc) gtk_button_class_init,
	(GtkObjectInitFunc) gtk_button_init,
114
	(GtkArgSetFunc) gtk_button_set_arg,
115
	(GtkArgGetFunc) gtk_button_get_arg,
Elliot Lee's avatar
Elliot Lee committed
116 117 118
      };

      button_type = gtk_type_unique (gtk_container_get_type (), &button_info);
119
      gtk_type_set_chunk_alloc (button_type, 16);
Elliot Lee's avatar
Elliot Lee committed
120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137
    }

  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;

  parent_class = gtk_type_class (gtk_container_get_type ());

138
  gtk_object_add_arg_type ("GtkButton::label", GTK_TYPE_STRING, GTK_ARG_READWRITE, ARG_LABEL);
Elliot Lee's avatar
Elliot Lee committed
139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197

  button_signals[PRESSED] =
    gtk_signal_new ("pressed",
                    GTK_RUN_FIRST,
                    object_class->type,
                    GTK_SIGNAL_OFFSET (GtkButtonClass, pressed),
                    gtk_signal_default_marshaller,
		    GTK_TYPE_NONE, 0);
  button_signals[RELEASED] =
    gtk_signal_new ("released",
                    GTK_RUN_FIRST,
                    object_class->type,
                    GTK_SIGNAL_OFFSET (GtkButtonClass, released),
                    gtk_signal_default_marshaller,
		    GTK_TYPE_NONE, 0);
  button_signals[CLICKED] =
    gtk_signal_new ("clicked",
                    GTK_RUN_FIRST,
                    object_class->type,
                    GTK_SIGNAL_OFFSET (GtkButtonClass, clicked),
                    gtk_signal_default_marshaller,
		    GTK_TYPE_NONE, 0);
  button_signals[ENTER] =
    gtk_signal_new ("enter",
                    GTK_RUN_FIRST,
                    object_class->type,
                    GTK_SIGNAL_OFFSET (GtkButtonClass, enter),
                    gtk_signal_default_marshaller,
		    GTK_TYPE_NONE, 0);
  button_signals[LEAVE] =
    gtk_signal_new ("leave",
                    GTK_RUN_FIRST,
                    object_class->type,
                    GTK_SIGNAL_OFFSET (GtkButtonClass, leave),
                    gtk_signal_default_marshaller,
		    GTK_TYPE_NONE, 0);

  gtk_object_class_add_signals (object_class, button_signals, LAST_SIGNAL);

  widget_class->activate_signal = button_signals[CLICKED];
  widget_class->map = gtk_button_map;
  widget_class->unmap = gtk_button_unmap;
  widget_class->realize = gtk_button_realize;
  widget_class->draw = gtk_button_draw;
  widget_class->draw_focus = gtk_button_draw_focus;
  widget_class->draw_default = gtk_button_draw_default;
  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;
  widget_class->focus_in_event = gtk_button_focus_in;
  widget_class->focus_out_event = gtk_button_focus_out;

  container_class->add = gtk_button_add;
  container_class->remove = gtk_button_remove;
  container_class->foreach = gtk_button_foreach;
198
  container_class->child_type = gtk_button_child_type;
Elliot Lee's avatar
Elliot Lee committed
199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214

  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;
}

static void
gtk_button_init (GtkButton *button)
{
  GTK_WIDGET_SET_FLAGS (button, GTK_CAN_FOCUS);

  button->child = NULL;
  button->in_button = FALSE;
  button->button_down = FALSE;
215
  button->relief = GTK_RELIEF_NORMAL;
Elliot Lee's avatar
Elliot Lee committed
216 217
}

218 219 220 221 222 223 224 225 226
static GtkType
gtk_button_child_type  (GtkContainer     *container)
{
  if (!GTK_BUTTON (container)->child)
    return GTK_TYPE_WIDGET;
  else
    return GTK_TYPE_NONE;
}

Elliot Lee's avatar
Elliot Lee committed
227
static void
228 229 230
gtk_button_set_arg (GtkButton *button,
		    GtkArg    *arg,
		    guint      arg_id)
Elliot Lee's avatar
Elliot Lee committed
231
{
232
  GtkWidget *label;
Elliot Lee's avatar
Elliot Lee committed
233

234 235 236
  switch (arg_id)
    {
    case ARG_LABEL:
Elliot Lee's avatar
Elliot Lee committed
237
      if (button->child)
238 239 240 241
	{
	  gtk_widget_unparent (button->child);
	  button->child = NULL;
	}
242

243
      label = gtk_label_new (GTK_VALUE_STRING(*arg) ? GTK_VALUE_STRING(*arg) : "");
Elliot Lee's avatar
Elliot Lee committed
244
      gtk_widget_show (label);
245

Elliot Lee's avatar
Elliot Lee committed
246
      gtk_container_add (GTK_CONTAINER (button), label);
247
      break;
248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265
    default:
      break;
    }
}

static void
gtk_button_get_arg (GtkButton *button,
		    GtkArg    *arg,
		    guint      arg_id)
{
  switch (arg_id)
    {
    case ARG_LABEL:
      if (button->child && GTK_IS_LABEL (button->child))
	GTK_VALUE_STRING (*arg) = g_strdup (GTK_LABEL (button->child)->label);
      else
	GTK_VALUE_STRING (*arg) = NULL;
      break;
Tim Janik's avatar
Tim Janik committed
266 267 268
    default:
      arg->type = GTK_TYPE_INVALID;
      break;
Elliot Lee's avatar
Elliot Lee committed
269 270 271 272
    }
}

GtkWidget*
273
gtk_button_new (void)
Elliot Lee's avatar
Elliot Lee committed
274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323
{
  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;
}

void
gtk_button_pressed (GtkButton *button)
{
  gtk_signal_emit (GTK_OBJECT (button), button_signals[PRESSED]);
}

void
gtk_button_released (GtkButton *button)
{
  gtk_signal_emit (GTK_OBJECT (button), button_signals[RELEASED]);
}

void
gtk_button_clicked (GtkButton *button)
{
  gtk_signal_emit (GTK_OBJECT (button), button_signals[CLICKED]);
}

void
gtk_button_enter (GtkButton *button)
{
  gtk_signal_emit (GTK_OBJECT (button), button_signals[ENTER]);
}

void
gtk_button_leave (GtkButton *button)
{
  gtk_signal_emit (GTK_OBJECT (button), button_signals[LEAVE]);
}

324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342
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;
}

GtkReliefStyle
gtk_button_get_relief(GtkButton *button)
{
  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
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
static void
gtk_button_map (GtkWidget *widget)
{
  GtkButton *button;

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

  GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
  gdk_window_show (widget->window);

  button = GTK_BUTTON (widget);

  if (button->child &&
      GTK_WIDGET_VISIBLE (button->child) &&
      !GTK_WIDGET_MAPPED (button->child))
    gtk_widget_map (button->child);
}

static void
gtk_button_unmap (GtkWidget *widget)
{
  g_return_if_fail (widget != NULL);
  g_return_if_fail (GTK_IS_BUTTON (widget));

  GTK_WIDGET_UNSET_FLAGS (widget, GTK_MAPPED);
  gdk_window_hide (widget->window);
}

static void
gtk_button_realize (GtkWidget *widget)
{
  GtkButton *button;
  GdkWindowAttr attributes;
  gint attributes_mask;
Owen Taylor's avatar
Owen Taylor committed
378
  gint border_width;
Elliot Lee's avatar
Elliot Lee committed
379 380 381 382 383 384 385

  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
386 387
  border_width = GTK_CONTAINER (widget)->border_width;

Elliot Lee's avatar
Elliot Lee committed
388
  attributes.window_type = GDK_WINDOW_CHILD;
Owen Taylor's avatar
Owen Taylor committed
389 390 391 392
  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
393 394 395 396 397 398 399 400 401 402 403 404
  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;

405
  widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask);
Elliot Lee's avatar
Elliot Lee committed
406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474
  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 +
			GTK_WIDGET (widget)->style->klass->xthickness) * 2;
  requisition->height = (GTK_CONTAINER (widget)->border_width + CHILD_SPACING +
			 GTK_WIDGET (widget)->style->klass->ythickness) * 2;

  if (GTK_WIDGET_CAN_DEFAULT (widget))
    {
      requisition->width += (GTK_WIDGET (widget)->style->klass->xthickness * 2 +
			     DEFAULT_SPACING);
      requisition->height += (GTK_WIDGET (widget)->style->klass->ythickness * 2 +
			      DEFAULT_SPACING);
    }

  if (button->child && GTK_WIDGET_VISIBLE (button->child))
    {
      gtk_widget_size_request (button->child, &button->child->requisition);

      requisition->width += button->child->requisition.width;
      requisition->height += button->child->requisition.height;
    }
}

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);

  if (button->child && GTK_WIDGET_VISIBLE (button->child))
    {
      child_allocation.x = (CHILD_SPACING + GTK_WIDGET (widget)->style->klass->xthickness);
      child_allocation.y = (CHILD_SPACING + GTK_WIDGET (widget)->style->klass->ythickness);

475
      child_allocation.width = MAX (1, widget->allocation.width - child_allocation.x * 2 -
Owen Taylor's avatar
Owen Taylor committed
476
	                         border_width * 2);
477
      child_allocation.height = MAX (1, widget->allocation.height - child_allocation.y * 2 -
Owen Taylor's avatar
Owen Taylor committed
478
	                          border_width * 2);
Elliot Lee's avatar
Elliot Lee committed
479 480 481 482 483 484 485

      if (GTK_WIDGET_CAN_DEFAULT (button))
	{
	  child_allocation.x += (GTK_WIDGET (widget)->style->klass->xthickness +
				 DEFAULT_LEFT_POS);
	  child_allocation.y += (GTK_WIDGET (widget)->style->klass->ythickness +
				 DEFAULT_TOP_POS);
486
	  child_allocation.width =  MAX (1, child_allocation.width -
Owen Taylor's avatar
Owen Taylor committed
487
					(GTK_WIDGET (widget)->style->klass->xthickness * 2 + DEFAULT_SPACING));
488
	  child_allocation.height = MAX (1, child_allocation.height -
Owen Taylor's avatar
Owen Taylor committed
489
					 (GTK_WIDGET (widget)->style->klass->xthickness * 2 + DEFAULT_SPACING));
Elliot Lee's avatar
Elliot Lee committed
490 491 492 493 494 495
	}

      gtk_widget_size_allocate (button->child, &child_allocation);
    }
}

496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521
/*
 * +------------------------------------------------+
 * |                   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
522 523 524 525 526
static void
gtk_button_paint (GtkWidget    *widget,
		  GdkRectangle *area)
{
  GdkRectangle restrict_area;
527 528
  GdkRectangle outer_area;
  GdkRectangle tmp_area;
Elliot Lee's avatar
Elliot Lee committed
529
  GdkRectangle new_area;
530 531
  gint xthickness;
  gint ythickness;
Elliot Lee's avatar
Elliot Lee committed
532 533 534 535

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

536 537 538
  xthickness = widget->style->klass->xthickness;
  ythickness = widget->style->klass->ythickness;

Elliot Lee's avatar
Elliot Lee committed
539 540
  if (GTK_WIDGET_DRAWABLE (widget))
    {
541 542 543
      restrict_area.x = xthickness;
      restrict_area.y = ythickness;
      restrict_area.width = GTK_WIDGET (widget)->allocation.width -
Owen Taylor's avatar
Owen Taylor committed
544
	restrict_area.x * 2 - GTK_CONTAINER (widget)->border_width * 2;
545
      restrict_area.height = GTK_WIDGET (widget)->allocation.height -
Owen Taylor's avatar
Owen Taylor committed
546
	restrict_area.y * 2 - GTK_CONTAINER (widget)->border_width * 2;
Elliot Lee's avatar
Elliot Lee committed
547

548 549
      outer_area = restrict_area;

Elliot Lee's avatar
Elliot Lee committed
550 551 552 553 554 555 556 557 558 559
      if (GTK_WIDGET_CAN_DEFAULT (widget))
	{
	  restrict_area.x += DEFAULT_LEFT_POS;
	  restrict_area.y += DEFAULT_TOP_POS;
	  restrict_area.width -= DEFAULT_SPACING;
	  restrict_area.height -= DEFAULT_SPACING;
	}

      if (gdk_rectangle_intersect (area, &restrict_area, &new_area))
	{
560 561 562 563 564
	  if ((GTK_WIDGET_STATE (widget) == GTK_STATE_PRELIGHT) &&
	      (GTK_BUTTON (widget)->relief == GTK_RELIEF_NONE))
	    gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
	  else
	    gtk_style_set_background (widget->style, widget->window, GTK_WIDGET_STATE (widget));
Elliot Lee's avatar
Elliot Lee committed
565 566 567 568
	  gdk_window_clear_area (widget->window,
				 new_area.x, new_area.y,
				 new_area.width, new_area.height);
	}
569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611

      if (GTK_WIDGET_CAN_DEFAULT (widget))
	{
	  /* Now fill spacing area between the default border and the button */

 /* 1 */  tmp_area = outer_area;
       	  tmp_area.width = restrict_area.x - outer_area.x;
       	  if (gdk_rectangle_intersect (area, &tmp_area, &new_area))
       	    gdk_draw_rectangle (widget->window,
       				widget->style->bg_gc[GTK_STATE_NORMAL],
       				TRUE,
       				new_area.x, new_area.y,
       				new_area.width, new_area.height);

  /* 2 */ tmp_area.x = restrict_area.x + restrict_area.width;

	  if (gdk_rectangle_intersect (area, &tmp_area, &new_area))
	    gdk_draw_rectangle (widget->window,
	 			widget->style->bg_gc[GTK_STATE_NORMAL],
	 			TRUE,
	 			new_area.x, new_area.y,
	 			new_area.width, new_area.height);

  /* 3 */ tmp_area.width = restrict_area.width;
	  tmp_area.height = restrict_area.y - outer_area.y;
	  tmp_area.x = restrict_area.x;

	  if (gdk_rectangle_intersect (area, &tmp_area, &new_area))
	    gdk_draw_rectangle (widget->window,
	 			widget->style->bg_gc[GTK_STATE_NORMAL],
	 			TRUE,
	 			new_area.x, new_area.y,
	 			new_area.width, new_area.height);

  /* 4 */ tmp_area.y = restrict_area.y + restrict_area.height;

	  if (gdk_rectangle_intersect (area, &tmp_area, &new_area))
	    gdk_draw_rectangle (widget->window,
				widget->style->bg_gc[GTK_STATE_NORMAL],
				TRUE,
				new_area.x, new_area.y,
				new_area.width, new_area.height);
	}
Elliot Lee's avatar
Elliot Lee committed
612 613 614 615 616 617 618 619 620
    }
}

static void
gtk_button_draw (GtkWidget    *widget,
		 GdkRectangle *area)
{
  GtkButton *button;
  GdkRectangle child_area;
Owen Taylor's avatar
Owen Taylor committed
621
  GdkRectangle tmp_area;
Elliot Lee's avatar
Elliot Lee committed
622 623 624 625 626 627 628 629 630

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

  if (GTK_WIDGET_DRAWABLE (widget))
    {
      button = GTK_BUTTON (widget);

Owen Taylor's avatar
Owen Taylor committed
631 632 633 634 635
      tmp_area = *area;
      tmp_area.x -= GTK_CONTAINER (button)->border_width;
      tmp_area.y -= GTK_CONTAINER (button)->border_width;

      gtk_button_paint (widget, &tmp_area);
Elliot Lee's avatar
Elliot Lee committed
636

Owen Taylor's avatar
Owen Taylor committed
637
      if (button->child && gtk_widget_intersect (button->child, &tmp_area, &child_area))
Elliot Lee's avatar
Elliot Lee committed
638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687
	gtk_widget_draw (button->child, &child_area);

      gtk_widget_draw_default (widget);
      gtk_widget_draw_focus (widget);
    }
}

static void
gtk_button_draw_focus (GtkWidget *widget)
{
  GtkButton *button;
  GtkShadowType shadow_type;
  gint width, height;
  gint x, y;

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

  if (GTK_WIDGET_DRAWABLE (widget))
    {
      button = GTK_BUTTON (widget);

      x = 0;
      y = 0;
      width = widget->allocation.width - GTK_CONTAINER (widget)->border_width * 2;
      height = widget->allocation.height - GTK_CONTAINER (widget)->border_width * 2;

      if (GTK_WIDGET_CAN_DEFAULT (widget))
	{
	  x += widget->style->klass->xthickness;
	  y += widget->style->klass->ythickness;
	  width -= 2 * x + DEFAULT_SPACING;
	  height -= 2 * y + DEFAULT_SPACING;
	  x += DEFAULT_LEFT_POS;
	  y += DEFAULT_TOP_POS;
	}

      if (GTK_WIDGET_HAS_FOCUS (widget))
	{
	  x += 1;
	  y += 1;
	  width -= 2;
	  height -= 2;
	}
      else
	{
	  if (GTK_WIDGET_STATE (widget) == GTK_STATE_ACTIVE)
	    gdk_draw_rectangle (widget->window,
				widget->style->bg_gc[GTK_WIDGET_STATE (widget)], FALSE,
				x + 1, y + 1, width - 4, height - 4);
688
	  else if (button->relief == GTK_RELIEF_NORMAL)
Elliot Lee's avatar
Elliot Lee committed
689 690 691
	    gdk_draw_rectangle (widget->window,
				widget->style->bg_gc[GTK_WIDGET_STATE (widget)], FALSE,
				x + 2, y + 2, width - 5, height - 5);
692 693 694 695
	  else
	    gdk_draw_rectangle (widget->window,
				widget->style->bg_gc[GTK_WIDGET_STATE (widget)], FALSE,
				x, y, width - 1, height - 1);
Elliot Lee's avatar
Elliot Lee committed
696 697 698 699 700 701 702
	}

      if (GTK_WIDGET_STATE (widget) == GTK_STATE_ACTIVE)
	shadow_type = GTK_SHADOW_IN;
      else
	shadow_type = GTK_SHADOW_OUT;

703 704 705 706 707 708 709 710
      if ((button->relief == GTK_RELIEF_NORMAL) ||
	  ((GTK_WIDGET_STATE (widget) != GTK_STATE_NORMAL) &&
	   (GTK_WIDGET_STATE (widget) != GTK_STATE_INSENSITIVE)))
	{
	  gtk_draw_shadow (widget->style, widget->window,
			   GTK_WIDGET_STATE (widget), shadow_type,
			   x, y, width, height);
	}
Elliot Lee's avatar
Elliot Lee committed
711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741

      if (GTK_WIDGET_HAS_FOCUS (widget))
	{
	  x -= 1;
	  y -= 1;
	  width += 2;
	  height += 2;

	  gdk_draw_rectangle (widget->window,
			      widget->style->black_gc, FALSE,
			      x, y, width - 1, height - 1);
	}
    }
}

static void
gtk_button_draw_default (GtkWidget *widget)
{
  gint width, height;
  gint x, y;

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

  if (GTK_WIDGET_DRAWABLE (widget))
    {
      x = 0;
      y = 0;
      width = widget->allocation.width - GTK_CONTAINER (widget)->border_width * 2;
      height = widget->allocation.height - GTK_CONTAINER (widget)->border_width * 2;

742
      if (GTK_WIDGET_HAS_DEFAULT (widget) && gtk_button_get_relief (GTK_BUTTON (widget)) == GTK_RELIEF_NORMAL)
Elliot Lee's avatar
Elliot Lee committed
743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933
	{
	  gtk_draw_shadow (widget->style, widget->window,
			   GTK_STATE_NORMAL, GTK_SHADOW_IN,
			   x, y, width, height);
	}
      else
	{
	  gdk_draw_rectangle (widget->window, widget->style->bg_gc[GTK_STATE_NORMAL],
			      FALSE, x, y, width - 1, height - 1);
	  gdk_draw_rectangle (widget->window, widget->style->bg_gc[GTK_STATE_NORMAL],
			      FALSE, x + 1, y + 1, width - 3, height - 3);
	}
    }
}

static gint
gtk_button_expose (GtkWidget      *widget,
		   GdkEventExpose *event)
{
  GtkButton *button;
  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))
    {
      button = GTK_BUTTON (widget);

      gtk_button_paint (widget, &event->area);

      child_event = *event;
      if (button->child && GTK_WIDGET_NO_WINDOW (button->child) &&
	  gtk_widget_intersect (button->child, &event->area, &child_event.area))
	gtk_widget_event (button->child, (GdkEvent*) &child_event);

      gtk_widget_draw_default (widget);
      gtk_widget_draw_focus (widget);
    }

  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_CAN_DEFAULT (widget) && (event->button == 1))
	gtk_widget_grab_default (widget);
      if (!GTK_WIDGET_HAS_FOCUS (widget))
	gtk_widget_grab_focus (widget);

      if (event->button == 1)
	{
	  gtk_grab_add (GTK_WIDGET (button));
	  gtk_button_pressed (button);
	}
    }

  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_grab_remove (GTK_WIDGET (button));
      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 gint
gtk_button_focus_in (GtkWidget     *widget,
		     GdkEventFocus *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);

  GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
  gtk_widget_draw_focus (widget);

  return FALSE;
}

static gint
gtk_button_focus_out (GtkWidget     *widget,
		      GdkEventFocus *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);

  GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
  gtk_widget_draw_focus (widget);

  return FALSE;
}

static void
gtk_button_add (GtkContainer *container,
		GtkWidget    *widget)
{
  GtkButton *button;

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

  button = GTK_BUTTON (container);

  if (!button->child)
    {
      gtk_widget_set_parent (widget, GTK_WIDGET (container));

      if (GTK_WIDGET_VISIBLE (widget->parent))
	{
	  if (GTK_WIDGET_REALIZED (widget->parent) &&
	      !GTK_WIDGET_REALIZED (widget))
	    gtk_widget_realize (widget);
934

Elliot Lee's avatar
Elliot Lee committed
935 936 937 938
	  if (GTK_WIDGET_MAPPED (widget->parent) &&
	      !GTK_WIDGET_MAPPED (widget))
	    gtk_widget_map (widget);
	}
939

Elliot Lee's avatar
Elliot Lee committed
940 941 942 943 944 945 946 947 948 949 950 951 952 953 954
      button->child = widget;

      if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_VISIBLE (container))
	gtk_widget_queue_resize (widget);
    }
}

static void
gtk_button_remove (GtkContainer *container,
		   GtkWidget    *widget)
{
  GtkButton *button;

  g_return_if_fail (container != NULL);
  g_return_if_fail (GTK_IS_BUTTON (container));
Tim Janik's avatar
Tim Janik committed
955
  g_return_if_fail (widget != NULL);
Elliot Lee's avatar
Elliot Lee committed
956 957 958 959 960

  button = GTK_BUTTON (container);

  if (button->child == widget)
    {
961 962
      gboolean widget_was_visible = GTK_WIDGET_VISIBLE(widget);

Elliot Lee's avatar
Elliot Lee committed
963 964 965 966
      gtk_widget_unparent (widget);

      button->child = NULL;

967
      if (widget_was_visible && GTK_WIDGET_VISIBLE (container))
Elliot Lee's avatar
Elliot Lee committed
968
	gtk_widget_queue_resize (GTK_WIDGET (container));
969

Elliot Lee's avatar
Elliot Lee committed
970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028
    }
}

static void
gtk_button_foreach (GtkContainer *container,
		    GtkCallback   callback,
		    gpointer      callback_data)
{
  GtkButton *button;

  g_return_if_fail (container != NULL);
  g_return_if_fail (GTK_IS_BUTTON (container));
  g_return_if_fail (callback != NULL);

  button = GTK_BUTTON (container);

  if (button->child)
    (* callback) (button->child, callback_data);
}

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);
1029 1030 1031 1032
	  /* 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
1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065
	}
    }
}

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));
    }
}