Pileus Git - ~andy/gtk/blob - gtk/gtkprogress.c

   1 /* GTK - The GIMP Toolkit
   2  * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20 /*
  21  * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS
  22  * file for a list of people on the GTK+ Team.  See the ChangeLog
  23  * files for a list of changes.  These files are distributed with
  24  * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
  25  */
  26
  27 #include "config.h"
  28 #include <math.h>
  29 #include <string.h>
  30
  31 #undef GTK_DISABLE_DEPRECATED
  32 #define __GTK_PROGRESS_C__
  33
  34 #include "gtkprogress.h"
  35 #include "gtkprivate.h"
  36 #include "gtkintl.h"
  37 #include "gtkalias.h"
  38
  39 #define EPSILON  1e-5
  40 #define DEFAULT_FORMAT "%P %%"
  41
  42 enum {
  43   PROP_0,
  44   PROP_ACTIVITY_MODE,
  45   PROP_SHOW_TEXT,
  46   PROP_TEXT_XALIGN,
  47   PROP_TEXT_YALIGN
  48 };
  49
  50
  51 static void gtk_progress_set_property    (GObject          *object,
  52                                           guint             prop_id,
  53                                           const GValue     *value,
  54                                           GParamSpec       *pspec);
  55 static void gtk_progress_get_property    (GObject          *object,
  56                                           guint             prop_id,
  57                                           GValue           *value,
  58                                           GParamSpec       *pspec);
  59 static void gtk_progress_destroy         (GtkObject        *object);
  60 static void gtk_progress_finalize        (GObject          *object);
  61 static void gtk_progress_realize         (GtkWidget        *widget);
  62 static gboolean gtk_progress_expose      (GtkWidget        *widget,
  63                                           GdkEventExpose   *event);
  64 static void gtk_progress_size_allocate   (GtkWidget        *widget,
  65                                           GtkAllocation    *allocation);
  66 static void gtk_progress_create_pixmap   (GtkProgress      *progress);
  67 static void gtk_progress_value_changed   (GtkAdjustment    *adjustment,
  68                                           GtkProgress      *progress);
  69 static void gtk_progress_changed         (GtkAdjustment    *adjustment,
  70                                           GtkProgress      *progress);
  71
  72 G_DEFINE_ABSTRACT_TYPE (GtkProgress, gtk_progress, GTK_TYPE_WIDGET)
  73
  74 static void
  75 gtk_progress_class_init (GtkProgressClass *class)
  76 {
  77   GObjectClass *gobject_class = G_OBJECT_CLASS (class);
  78   GtkObjectClass *object_class;
  79   GtkWidgetClass *widget_class;
  80
  81   object_class = (GtkObjectClass *) class;
  82   widget_class = (GtkWidgetClass *) class;
  83
  84   gobject_class->finalize = gtk_progress_finalize;
  85
  86   gobject_class->set_property = gtk_progress_set_property;
  87   gobject_class->get_property = gtk_progress_get_property;
  88   object_class->destroy = gtk_progress_destroy;
  89
  90   widget_class->realize = gtk_progress_realize;
  91   widget_class->expose_event = gtk_progress_expose;
  92   widget_class->size_allocate = gtk_progress_size_allocate;
  93
  94   /* to be overridden */
  95   class->paint = NULL;
  96   class->update = NULL;
  97   class->act_mode_enter = NULL;
  98
  99   g_object_class_install_property (gobject_class,
 100                                    PROP_ACTIVITY_MODE,
 101                                    g_param_spec_boolean ("activity-mode",
 102                                                          P_("Activity mode"),
 103                                                          P_("If TRUE, the GtkProgress is in activity mode, meaning that it signals "
 104                                                             "something is happening, but not how much of the activity is finished. "
 105                                                             "This is used when you're doing something but don't know how long it will take."),
 106                                                          FALSE,
 107                                                          GTK_PARAM_READWRITE));
 108   g_object_class_install_property (gobject_class,
 109                                    PROP_SHOW_TEXT,
 110                                    g_param_spec_boolean ("show-text",
 111                                                          P_("Show text"),
 112                                                          P_("Whether the progress is shown as text."),
 113                                                          FALSE,
 114                                                          GTK_PARAM_READWRITE));
 115   g_object_class_install_property (gobject_class,
 116                                    PROP_TEXT_XALIGN,
 117                                    g_param_spec_float ("text-xalign",
 118                                                        P_("Text x alignment"),
 119                                                        P_("The horizontal text alignment, from 0 (left) to 1 (right). Reversed for RTL layouts."),
 120                                                        0.0, 1.0, 0.5,
 121                                                        GTK_PARAM_READWRITE));
 122   g_object_class_install_property (gobject_class,
 123                                    PROP_TEXT_YALIGN,
 124                                    g_param_spec_float ("text-yalign",
 125                                                        P_("Text y alignment"),
 126                                                        P_("The vertical text alignment, from 0 (top) to 1 (bottom)."),
 127                                                        0.0, 1.0, 0.5,
 128                                                        GTK_PARAM_READWRITE));
 129 }
 130
 131 static void
 132 gtk_progress_set_property (GObject      *object,
 133                            guint         prop_id,
 134                            const GValue *value,
 135                            GParamSpec   *pspec)
 136 {
 137   GtkProgress *progress;
 138
 139   progress = GTK_PROGRESS (object);
 140
 141   switch (prop_id)
 142     {
 143     case PROP_ACTIVITY_MODE:
 144       gtk_progress_set_activity_mode (progress, g_value_get_boolean (value));
 145       break;
 146     case PROP_SHOW_TEXT:
 147       gtk_progress_set_show_text (progress, g_value_get_boolean (value));
 148       break;
 149     case PROP_TEXT_XALIGN:
 150       gtk_progress_set_text_alignment (progress,
 151                                        g_value_get_float (value),
 152                                        progress->y_align);
 153       break;
 154     case PROP_TEXT_YALIGN:
 155       gtk_progress_set_text_alignment (progress,
 156                                        progress->x_align,
 157                                        g_value_get_float (value));
 158       break;
 159     default:
 160       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 161       break;
 162     }
 163 }
 164
 165 static void
 166 gtk_progress_get_property (GObject      *object,
 167                            guint         prop_id,
 168                            GValue       *value,
 169                            GParamSpec   *pspec)
 170 {
 171   GtkProgress *progress;
 172
 173   progress = GTK_PROGRESS (object);
 174
 175   switch (prop_id)
 176     {
 177     case PROP_ACTIVITY_MODE:
 178       g_value_set_boolean (value, (progress->activity_mode != FALSE));
 179       break;
 180     case PROP_SHOW_TEXT:
 181       g_value_set_boolean (value, (progress->show_text != FALSE));
 182       break;
 183     case PROP_TEXT_XALIGN:
 184       g_value_set_float (value, progress->x_align);
 185       break;
 186     case PROP_TEXT_YALIGN:
 187       g_value_set_float (value, progress->y_align);
 188       break;
 189     default:
 190       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 191       break;
 192     }
 193 }
 194
 195 static void
 196 gtk_progress_init (GtkProgress *progress)
 197 {
 198   progress->adjustment = NULL;
 199   progress->offscreen_pixmap = NULL;
 200   progress->format = g_strdup (DEFAULT_FORMAT);
 201   progress->x_align = 0.5;
 202   progress->y_align = 0.5;
 203   progress->show_text = FALSE;
 204   progress->activity_mode = FALSE;
 205   progress->use_text_format = TRUE;
 206 }
 207
 208 static void
 209 gtk_progress_realize (GtkWidget *widget)
 210 {
 211   GtkProgress *progress = GTK_PROGRESS (widget);
 212   GdkWindowAttr attributes;
 213   gint attributes_mask;
 214
 215   gtk_widget_set_realized (widget, TRUE);
 216
 217   attributes.window_type = GDK_WINDOW_CHILD;
 218   attributes.x = widget->allocation.x;
 219   attributes.y = widget->allocation.y;
 220   attributes.width = widget->allocation.width;
 221   attributes.height = widget->allocation.height;
 222   attributes.wclass = GDK_INPUT_OUTPUT;
 223   attributes.visual = gtk_widget_get_visual (widget);
 224   attributes.colormap = gtk_widget_get_colormap (widget);
 225   attributes.event_mask = gtk_widget_get_events (widget);
 226   attributes.event_mask |= GDK_EXPOSURE_MASK;
 227
 228   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
 229
 230   widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
 231                                    &attributes, attributes_mask);
 232   gdk_window_set_user_data (widget->window, progress);
 233
 234   widget->style = gtk_style_attach (widget->style, widget->window);
 235   gtk_style_set_background (widget->style, widget->window, GTK_STATE_ACTIVE);
 236
 237   gtk_progress_create_pixmap (progress);
 238 }
 239
 240 static void
 241 gtk_progress_destroy (GtkObject *object)
 242 {
 243   GtkProgress *progress = GTK_PROGRESS (object);
 244
 245   if (progress->adjustment)
 246     {
 247       g_signal_handlers_disconnect_by_func (progress->adjustment,
 248                                             gtk_progress_value_changed,
 249                                             progress);
 250       g_signal_handlers_disconnect_by_func (progress->adjustment,
 251                                             gtk_progress_changed,
 252                                             progress);
 253       g_object_unref (progress->adjustment);
 254       progress->adjustment = NULL;
 255     }
 256
 257   GTK_OBJECT_CLASS (gtk_progress_parent_class)->destroy (object);
 258 }
 259
 260 static void
 261 gtk_progress_finalize (GObject *object)
 262 {
 263   GtkProgress *progress = GTK_PROGRESS (object);
 264
 265   if (progress->offscreen_pixmap)
 266     g_object_unref (progress->offscreen_pixmap);
 267
 268   g_free (progress->format);
 269
 270   G_OBJECT_CLASS (gtk_progress_parent_class)->finalize (object);
 271 }
 272
 273 static gboolean
 274 gtk_progress_expose (GtkWidget      *widget,
 275                      GdkEventExpose *event)
 276 {
 277   if (GTK_WIDGET_DRAWABLE (widget))
 278     gdk_draw_drawable (widget->window,
 279                        widget->style->black_gc,
 280                        GTK_PROGRESS (widget)->offscreen_pixmap,
 281                        event->area.x, event->area.y,
 282                        event->area.x, event->area.y,
 283                        event->area.width,
 284                        event->area.height);
 285
 286   return FALSE;
 287 }
 288
 289 static void
 290 gtk_progress_size_allocate (GtkWidget     *widget,
 291                             GtkAllocation *allocation)
 292 {
 293   widget->allocation = *allocation;
 294
 295   if (gtk_widget_get_realized (widget))
 296     {
 297       gdk_window_move_resize (widget->window,
 298                               allocation->x, allocation->y,
 299                               allocation->width, allocation->height);
 300
 301       gtk_progress_create_pixmap (GTK_PROGRESS (widget));
 302     }
 303 }
 304
 305 static void
 306 gtk_progress_create_pixmap (GtkProgress *progress)
 307 {
 308   GtkWidget *widget;
 309
 310   g_return_if_fail (GTK_IS_PROGRESS (progress));
 311
 312   widget = GTK_WIDGET (progress);
 313
 314   if (gtk_widget_get_realized (widget))
 315     {
 316       if (progress->offscreen_pixmap)
 317         g_object_unref (progress->offscreen_pixmap);
 318
 319       progress->offscreen_pixmap = gdk_pixmap_new (widget->window,
 320                                                    widget->allocation.width,
 321                                                    widget->allocation.height,
 322                                                    -1);
 323
 324       /* clear the pixmap for transparent themes */
 325       gtk_paint_flat_box (widget->style,
 326                           progress->offscreen_pixmap,
 327                           GTK_STATE_NORMAL, GTK_SHADOW_NONE,
 328                           NULL, widget, "trough", 0, 0, -1, -1);
 329
 330       GTK_PROGRESS_GET_CLASS (progress)->paint (progress);
 331     }
 332 }
 333
 334 static void
 335 gtk_progress_changed (GtkAdjustment *adjustment,
 336                       GtkProgress   *progress)
 337 {
 338   /* A change in the value of adjustment->upper can change
 339    * the size request
 340    */
 341   if (progress->use_text_format && progress->show_text)
 342     gtk_widget_queue_resize (GTK_WIDGET (progress));
 343   else
 344     GTK_PROGRESS_GET_CLASS (progress)->update (progress);
 345 }
 346
 347 static void
 348 gtk_progress_value_changed (GtkAdjustment *adjustment,
 349                             GtkProgress   *progress)
 350 {
 351   GTK_PROGRESS_GET_CLASS (progress)->update (progress);
 352 }
 353
 354 static gchar *
 355 gtk_progress_build_string (GtkProgress *progress,
 356                            gdouble      value,
 357                            gdouble      percentage)
 358 {
 359   gchar buf[256] = { 0 };
 360   gchar tmp[256] = { 0 };
 361   gchar *src;
 362   gchar *dest;
 363   gchar fmt[10];
 364
 365   src = progress->format;
 366
 367   /* This is the new supported version of this function */
 368   if (!progress->use_text_format)
 369     return g_strdup (src);
 370
 371   /* And here's all the deprecated goo. */
 372
 373   dest = buf;
 374
 375   while (src && *src)
 376     {
 377       if (*src != '%')
 378         {
 379           *dest = *src;
 380           dest++;
 381         }
 382       else
 383         {
 384           gchar c;
 385           gint digits;
 386
 387           c = *(src + sizeof(gchar));
 388           digits = 0;
 389
 390           if (c >= '0' && c <= '2')
 391             {
 392               digits = (gint) (c - '0');
 393               src++;
 394               c = *(src + sizeof(gchar));
 395             }
 396
 397           switch (c)
 398             {
 399             case '%':
 400               *dest = '%';
 401               src++;
 402               dest++;
 403               break;
 404             case 'p':
 405             case 'P':
 406               if (digits)
 407                 {
 408                   g_snprintf (fmt, sizeof (fmt), "%%.%df", digits);
 409                   g_snprintf (tmp, sizeof (tmp), fmt, 100 * percentage);
 410                 }
 411               else
 412                 g_snprintf (tmp, sizeof (tmp), "%.0f", 100 * percentage);
 413               strcat (buf, tmp);
 414               dest = &(buf[strlen (buf)]);
 415               src++;
 416               break;
 417             case 'v':
 418             case 'V':
 419               if (digits)
 420                 {
 421                   g_snprintf (fmt, sizeof (fmt), "%%.%df", digits);
 422                   g_snprintf (tmp, sizeof (tmp), fmt, value);
 423                 }
 424               else
 425                 g_snprintf (tmp, sizeof (tmp), "%.0f", value);
 426               strcat (buf, tmp);
 427               dest = &(buf[strlen (buf)]);
 428               src++;
 429               break;
 430             case 'l':
 431             case 'L':
 432               if (digits)
 433                 {
 434                   g_snprintf (fmt, sizeof (fmt), "%%.%df", digits);
 435                   g_snprintf (tmp, sizeof (tmp), fmt, progress->adjustment->lower);
 436                 }
 437               else
 438                 g_snprintf (tmp, sizeof (tmp), "%.0f", progress->adjustment->lower);
 439               strcat (buf, tmp);
 440               dest = &(buf[strlen (buf)]);
 441               src++;
 442               break;
 443             case 'u':
 444             case 'U':
 445               if (digits)
 446                 {
 447                   g_snprintf (fmt, sizeof (fmt), "%%.%df", digits);
 448                   g_snprintf (tmp, sizeof (tmp), fmt, progress->adjustment->upper);
 449                 }
 450               else
 451                 g_snprintf (tmp, sizeof (tmp), "%.0f", progress->adjustment->upper);
 452               strcat (buf, tmp);
 453               dest = &(buf[strlen (buf)]);
 454               src++;
 455               break;
 456             default:
 457               break;
 458             }
 459         }
 460       src++;
 461     }
 462
 463   return g_strdup (buf);
 464 }
 465
 466 /***************************************************************/
 467
 468 void
 469 gtk_progress_set_adjustment (GtkProgress   *progress,
 470                              GtkAdjustment *adjustment)
 471 {
 472   g_return_if_fail (GTK_IS_PROGRESS (progress));
 473   if (adjustment)
 474     g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
 475   else
 476     adjustment = (GtkAdjustment*) gtk_adjustment_new (0, 0, 100, 0, 0, 0);
 477
 478   if (progress->adjustment != adjustment)
 479     {
 480       if (progress->adjustment)
 481         {
 482           g_signal_handlers_disconnect_by_func (progress->adjustment,
 483                                                 gtk_progress_changed,
 484                                                 progress);
 485           g_signal_handlers_disconnect_by_func (progress->adjustment,
 486                                                 gtk_progress_value_changed,
 487                                                 progress);
 488           g_object_unref (progress->adjustment);
 489         }
 490       progress->adjustment = adjustment;
 491       if (adjustment)
 492         {
 493           g_object_ref_sink (adjustment);
 494           g_signal_connect (adjustment, "changed",
 495                             G_CALLBACK (gtk_progress_changed),
 496                             progress);
 497           g_signal_connect (adjustment, "value-changed",
 498                             G_CALLBACK (gtk_progress_value_changed),
 499                             progress);
 500         }
 501
 502       gtk_progress_changed (adjustment, progress);
 503     }
 504 }
 505
 506 void
 507 gtk_progress_configure (GtkProgress *progress,
 508                         gdouble      value,
 509                         gdouble      min,
 510                         gdouble      max)
 511 {
 512   GtkAdjustment *adj;
 513   gboolean changed = FALSE;
 514
 515   g_return_if_fail (GTK_IS_PROGRESS (progress));
 516   g_return_if_fail (min <= max);
 517   g_return_if_fail (value >= min && value <= max);
 518
 519   if (!progress->adjustment)
 520     gtk_progress_set_adjustment (progress, NULL);
 521   adj = progress->adjustment;
 522
 523   if (fabs (adj->lower - min) > EPSILON || fabs (adj->upper - max) > EPSILON)
 524     changed = TRUE;
 525
 526   adj->value = value;
 527   adj->lower = min;
 528   adj->upper = max;
 529
 530   gtk_adjustment_value_changed (adj);
 531   if (changed)
 532     gtk_adjustment_changed (adj);
 533 }
 534
 535 void
 536 gtk_progress_set_percentage (GtkProgress *progress,
 537                              gdouble      percentage)
 538 {
 539   g_return_if_fail (GTK_IS_PROGRESS (progress));
 540   g_return_if_fail (percentage >= 0 && percentage <= 1.0);
 541
 542   if (!progress->adjustment)
 543     gtk_progress_set_adjustment (progress, NULL);
 544   gtk_progress_set_value (progress, progress->adjustment->lower + percentage *
 545                  (progress->adjustment->upper - progress->adjustment->lower));
 546 }
 547
 548 gdouble
 549 gtk_progress_get_current_percentage (GtkProgress *progress)
 550 {
 551   g_return_val_if_fail (GTK_IS_PROGRESS (progress), 0);
 552
 553   if (!progress->adjustment)
 554     gtk_progress_set_adjustment (progress, NULL);
 555
 556   return gtk_progress_get_percentage_from_value (progress, progress->adjustment->value);
 557 }
 558
 559 gdouble
 560 gtk_progress_get_percentage_from_value (GtkProgress *progress,
 561                                         gdouble      value)
 562 {
 563   g_return_val_if_fail (GTK_IS_PROGRESS (progress), 0);
 564
 565   if (!progress->adjustment)
 566     gtk_progress_set_adjustment (progress, NULL);
 567
 568   if (progress->adjustment->lower < progress->adjustment->upper &&
 569       value >= progress->adjustment->lower &&
 570       value <= progress->adjustment->upper)
 571     return (value - progress->adjustment->lower) /
 572       (progress->adjustment->upper - progress->adjustment->lower);
 573   else
 574     return 0.0;
 575 }
 576
 577 void
 578 gtk_progress_set_value (GtkProgress *progress,
 579                         gdouble      value)
 580 {
 581   g_return_if_fail (GTK_IS_PROGRESS (progress));
 582
 583   if (!progress->adjustment)
 584     gtk_progress_set_adjustment (progress, NULL);
 585
 586   if (fabs (progress->adjustment->value - value) > EPSILON)
 587     gtk_adjustment_set_value (progress->adjustment, value);
 588 }
 589
 590 gdouble
 591 gtk_progress_get_value (GtkProgress *progress)
 592 {
 593   g_return_val_if_fail (GTK_IS_PROGRESS (progress), 0);
 594
 595   return progress->adjustment ? progress->adjustment->value : 0;
 596 }
 597
 598 void
 599 gtk_progress_set_show_text (GtkProgress *progress,
 600                             gboolean     show_text)
 601 {
 602   g_return_if_fail (GTK_IS_PROGRESS (progress));
 603
 604   if (progress->show_text != show_text)
 605     {
 606       progress->show_text = show_text;
 607
 608       gtk_widget_queue_resize (GTK_WIDGET (progress));
 609
 610       g_object_notify (G_OBJECT (progress), "show-text");
 611     }
 612 }
 613
 614 void
 615 gtk_progress_set_text_alignment (GtkProgress *progress,
 616                                  gfloat       x_align,
 617                                  gfloat       y_align)
 618 {
 619   g_return_if_fail (GTK_IS_PROGRESS (progress));
 620   g_return_if_fail (x_align >= 0.0 && x_align <= 1.0);
 621   g_return_if_fail (y_align >= 0.0 && y_align <= 1.0);
 622
 623   if (progress->x_align != x_align || progress->y_align != y_align)
 624     {
 625       g_object_freeze_notify (G_OBJECT (progress));
 626       if (progress->x_align != x_align)
 627         {
 628           progress->x_align = x_align;
 629           g_object_notify (G_OBJECT (progress), "text-xalign");
 630         }
 631
 632       if (progress->y_align != y_align)
 633         {
 634           progress->y_align = y_align;
 635           g_object_notify (G_OBJECT (progress), "text-yalign");
 636         }
 637       g_object_thaw_notify (G_OBJECT (progress));
 638
 639       if (GTK_WIDGET_DRAWABLE (GTK_WIDGET (progress)))
 640         gtk_widget_queue_resize (GTK_WIDGET (progress));
 641     }
 642 }
 643
 644 void
 645 gtk_progress_set_format_string (GtkProgress *progress,
 646                                 const gchar *format)
 647 {
 648   gchar *old_format;
 649
 650   g_return_if_fail (GTK_IS_PROGRESS (progress));
 651
 652   /* Turn on format, in case someone called
 653    * gtk_progress_bar_set_text() and turned it off.
 654    */
 655   progress->use_text_format = TRUE;
 656
 657   old_format = progress->format;
 658
 659   if (!format)
 660     format = DEFAULT_FORMAT;
 661
 662   progress->format = g_strdup (format);
 663   g_free (old_format);
 664
 665   gtk_widget_queue_resize (GTK_WIDGET (progress));
 666 }
 667
 668 gchar *
 669 gtk_progress_get_current_text (GtkProgress *progress)
 670 {
 671   g_return_val_if_fail (GTK_IS_PROGRESS (progress), NULL);
 672
 673   if (!progress->adjustment)
 674     gtk_progress_set_adjustment (progress, NULL);
 675
 676   return gtk_progress_build_string (progress, progress->adjustment->value,
 677                                     gtk_progress_get_current_percentage (progress));
 678 }
 679
 680 gchar *
 681 gtk_progress_get_text_from_value (GtkProgress *progress,
 682                                   gdouble      value)
 683 {
 684   g_return_val_if_fail (GTK_IS_PROGRESS (progress), NULL);
 685
 686   if (!progress->adjustment)
 687     gtk_progress_set_adjustment (progress, NULL);
 688
 689   return gtk_progress_build_string (progress, value,
 690                                     gtk_progress_get_percentage_from_value (progress, value));
 691 }
 692
 693 void
 694 gtk_progress_set_activity_mode (GtkProgress *progress,
 695                                 gboolean     activity_mode)
 696 {
 697   g_return_if_fail (GTK_IS_PROGRESS (progress));
 698
 699   if (progress->activity_mode != (activity_mode != FALSE))
 700     {
 701       progress->activity_mode = (activity_mode != FALSE);
 702
 703       if (progress->activity_mode)
 704         GTK_PROGRESS_GET_CLASS (progress)->act_mode_enter (progress);
 705
 706       if (GTK_WIDGET_DRAWABLE (GTK_WIDGET (progress)))
 707         gtk_widget_queue_resize (GTK_WIDGET (progress));
 708
 709       g_object_notify (G_OBJECT (progress), "activity-mode");
 710     }
 711 }
 712
 713 #include "gtkaliasdef.c"