Pileus Git - ~andy/gtk/blob - gtk/gtkprogressbar.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 #if HAVE_CONFIG_H
  28 #  include <config.h>
  29 #  if STDC_HEADERS
  30 #    include <string.h>
  31 #    include <stdio.h>
  32 #  endif
  33 #else
  34 #  include <stdio.h>
  35 #endif
  36
  37 #include "gtkprogressbar.h"
  38 #include "gtksignal.h"
  39 #include "gtkintl.h"
  40
  41
  42 #define MIN_HORIZONTAL_BAR_WIDTH   150
  43 #define MIN_HORIZONTAL_BAR_HEIGHT  20
  44 #define MIN_VERTICAL_BAR_WIDTH     22
  45 #define MIN_VERTICAL_BAR_HEIGHT    80
  46 #define MAX_TEXT_LENGTH            80
  47 #define TEXT_SPACING               2
  48
  49 enum {
  50   PROP_0,
  51
  52   /* Supported args */
  53   PROP_FRACTION,
  54   PROP_PULSE_STEP,
  55   PROP_ORIENTATION,
  56   PROP_TEXT,
  57
  58   /* Deprecated args */
  59   PROP_ADJUSTMENT,
  60   PROP_BAR_STYLE,
  61   PROP_ACTIVITY_STEP,
  62   PROP_ACTIVITY_BLOCKS,
  63   PROP_DISCRETE_BLOCKS
  64 };
  65
  66 static void gtk_progress_bar_class_init    (GtkProgressBarClass *klass);
  67 static void gtk_progress_bar_init          (GtkProgressBar      *pbar);
  68 static void gtk_progress_bar_set_property  (GObject             *object,
  69                                             guint                prop_id,
  70                                             const GValue        *value,
  71                                             GParamSpec          *pspec);
  72 static void gtk_progress_bar_get_property  (GObject             *object,
  73                                             guint                prop_id,
  74                                             GValue              *value,
  75                                             GParamSpec          *pspec);
  76 static void gtk_progress_bar_size_request  (GtkWidget           *widget,
  77                                             GtkRequisition      *requisition);
  78 static void gtk_progress_bar_real_update   (GtkProgress         *progress);
  79 static void gtk_progress_bar_paint         (GtkProgress         *progress);
  80 static void gtk_progress_bar_act_mode_enter (GtkProgress        *progress);
  81
  82
  83 GtkType
  84 gtk_progress_bar_get_type (void)
  85 {
  86   static GtkType progress_bar_type = 0;
  87
  88   if (!progress_bar_type)
  89     {
  90       static const GtkTypeInfo progress_bar_info =
  91       {
  92         "GtkProgressBar",
  93         sizeof (GtkProgressBar),
  94         sizeof (GtkProgressBarClass),
  95         (GtkClassInitFunc) gtk_progress_bar_class_init,
  96         (GtkObjectInitFunc) gtk_progress_bar_init,
  97         /* reserved_1 */ NULL,
  98         /* reserved_2 */ NULL,
  99         (GtkClassInitFunc) NULL
 100       };
 101
 102       progress_bar_type = gtk_type_unique (GTK_TYPE_PROGRESS, &progress_bar_info);
 103     }
 104
 105   return progress_bar_type;
 106 }
 107
 108 static void
 109 gtk_progress_bar_class_init (GtkProgressBarClass *class)
 110 {
 111   GObjectClass *gobject_class;
 112   GtkWidgetClass *widget_class;
 113   GtkProgressClass *progress_class;
 114
 115   gobject_class = G_OBJECT_CLASS (class);
 116   widget_class = (GtkWidgetClass *) class;
 117   progress_class = (GtkProgressClass *) class;
 118
 119   gobject_class->set_property = gtk_progress_bar_set_property;
 120   gobject_class->get_property = gtk_progress_bar_get_property;
 121
 122   widget_class->size_request = gtk_progress_bar_size_request;
 123
 124   progress_class->paint = gtk_progress_bar_paint;
 125   progress_class->update = gtk_progress_bar_real_update;
 126   progress_class->act_mode_enter = gtk_progress_bar_act_mode_enter;
 127
 128   g_object_class_install_property (gobject_class,
 129                                    PROP_ADJUSTMENT,
 130                                    g_param_spec_object ("adjustment",
 131                                                         _("Adjustment"),
 132                                                         _("The GtkAdjustment connected to the progress bar (Deprecated)"),
 133                                                         GTK_TYPE_ADJUSTMENT,
 134                                                         G_PARAM_READWRITE));
 135
 136   g_object_class_install_property (gobject_class,
 137                                    PROP_ORIENTATION,
 138                                    g_param_spec_enum ("orientation",
 139                                                       _("Orientation"),
 140                                                       _("Orientation and growth direction of the progress bar"),
 141                                                       GTK_TYPE_PROGRESS_BAR_ORIENTATION,
 142                                                       GTK_PROGRESS_LEFT_TO_RIGHT,
 143                                                       G_PARAM_READWRITE));
 144
 145   g_object_class_install_property (gobject_class,
 146                                    PROP_BAR_STYLE,
 147                                    g_param_spec_enum ("bar_style",
 148                                                       _("Bar style"),
 149                                                       _("Specifies the visual style of the bar in percentage mode (Deprecated)"),
 150                                                       GTK_TYPE_PROGRESS_BAR_STYLE,
 151                                                       GTK_PROGRESS_CONTINUOUS,
 152                                                       G_PARAM_READWRITE));
 153
 154   g_object_class_install_property (gobject_class,
 155                                    PROP_ACTIVITY_STEP,
 156                                    g_param_spec_uint ("activity_step",
 157                                                       _("Activity Step"),
 158                                                       _("The increment used for each iteration in activity mode (Deprecated)"),
 159                                                       -G_MAXUINT,
 160                                                       G_MAXUINT,
 161                                                       3,
 162                                                       G_PARAM_READWRITE));
 163
 164   g_object_class_install_property (gobject_class,
 165                                    PROP_ACTIVITY_BLOCKS,
 166                                    g_param_spec_uint ("activity_blocks",
 167                                                       _("Activity Blocks"),
 168                                                       _("The number of blocks which can fit in the progress bar area in activity mode (Deprecated)"),
 169                                                       2,
 170                                                       G_MAXUINT,
 171                                                       5,
 172                                                       G_PARAM_READWRITE));
 173
 174   g_object_class_install_property (gobject_class,
 175                                    PROP_DISCRETE_BLOCKS,
 176                                    g_param_spec_uint ("discrete_blocks",
 177                                                       _("Discrete Blocks"),
 178                                                       _("The number of discrete blocks in a progress bar (when shown in the discrete style)"),
 179                                                       2,
 180                                                       G_MAXUINT,
 181                                                       10,
 182                                                       G_PARAM_READWRITE));
 183
 184   g_object_class_install_property (gobject_class,
 185                                    PROP_FRACTION,
 186                                    g_param_spec_double ("fraction",
 187                                                         _("Fraction"),
 188                                                         _("The fraction of total work that has been completed"),
 189                                                         0.0,
 190                                                         1.0,
 191                                                         0.0,
 192                                                         G_PARAM_READWRITE));
 193
 194   g_object_class_install_property (gobject_class,
 195                                    PROP_PULSE_STEP,
 196                                    g_param_spec_double ("pulse_step",
 197                                                         _("Pulse Step"),
 198                                                         _("The fraction of total progress to move the bouncing block when pulsed"),
 199                                                         0.0,
 200                                                         1.0,
 201                                                         0.1,
 202                                                         G_PARAM_READWRITE));
 203
 204   g_object_class_install_property (gobject_class,
 205                                    PROP_TEXT,
 206                                    g_param_spec_string ("text",
 207                                                         _("Text"),
 208                                                         _("Text to be displayed in the progress bar"),
 209                                                         "%P %%",
 210                                                         G_PARAM_READWRITE));
 211
 212 }
 213
 214 static void
 215 gtk_progress_bar_init (GtkProgressBar *pbar)
 216 {
 217   pbar->bar_style = GTK_PROGRESS_CONTINUOUS;
 218   pbar->blocks = 10;
 219   pbar->in_block = -1;
 220   pbar->orientation = GTK_PROGRESS_LEFT_TO_RIGHT;
 221   pbar->pulse_fraction = 0.1;
 222   pbar->activity_pos = 0;
 223   pbar->activity_dir = 1;
 224   pbar->activity_step = 3;
 225   pbar->activity_blocks = 5;
 226 }
 227
 228 static void
 229 gtk_progress_bar_set_property (GObject      *object,
 230                                guint         prop_id,
 231                                const GValue *value,
 232                                GParamSpec   *pspec)
 233 {
 234   GtkProgressBar *pbar;
 235
 236   pbar = GTK_PROGRESS_BAR (object);
 237
 238   switch (prop_id)
 239     {
 240     case PROP_ADJUSTMENT:
 241       gtk_progress_set_adjustment (GTK_PROGRESS (pbar),
 242                                    GTK_ADJUSTMENT (g_value_get_object (value)));
 243       break;
 244     case PROP_ORIENTATION:
 245       gtk_progress_bar_set_orientation (pbar, g_value_get_enum (value));
 246       break;
 247     case PROP_BAR_STYLE:
 248       gtk_progress_bar_set_bar_style (pbar, g_value_get_enum (value));
 249       break;
 250     case PROP_ACTIVITY_STEP:
 251       gtk_progress_bar_set_activity_step (pbar, g_value_get_uint (value));
 252       break;
 253     case PROP_ACTIVITY_BLOCKS:
 254       gtk_progress_bar_set_activity_blocks (pbar, g_value_get_uint (value));
 255       break;
 256     case PROP_DISCRETE_BLOCKS:
 257       gtk_progress_bar_set_discrete_blocks (pbar, g_value_get_uint (value));
 258       break;
 259     case PROP_FRACTION:
 260       gtk_progress_bar_set_fraction (pbar, g_value_get_double (value));
 261       break;
 262     case PROP_PULSE_STEP:
 263       gtk_progress_bar_set_pulse_step (pbar, g_value_get_double (value));
 264       break;
 265     case PROP_TEXT:
 266       gtk_progress_bar_set_text (pbar, g_value_get_string (value));
 267       break;
 268     default:
 269       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 270       break;
 271     }
 272 }
 273
 274 static void
 275 gtk_progress_bar_get_property (GObject      *object,
 276                                guint         prop_id,
 277                                GValue       *value,
 278                                GParamSpec   *pspec)
 279 {
 280   GtkProgressBar *pbar;
 281
 282   pbar = GTK_PROGRESS_BAR (object);
 283
 284   switch (prop_id)
 285     {
 286     case PROP_ADJUSTMENT:
 287       g_value_set_object (value, GTK_PROGRESS (pbar)->adjustment);
 288       break;
 289     case PROP_ORIENTATION:
 290       g_value_set_enum (value, pbar->orientation);
 291       break;
 292     case PROP_BAR_STYLE:
 293       g_value_set_enum (value, pbar->bar_style);
 294       break;
 295     case PROP_ACTIVITY_STEP:
 296       g_value_set_uint (value, pbar->activity_step);
 297       break;
 298     case PROP_ACTIVITY_BLOCKS:
 299       g_value_set_uint (value, pbar->activity_blocks);
 300       break;
 301     case PROP_DISCRETE_BLOCKS:
 302       g_value_set_uint (value, pbar->blocks);
 303       break;
 304     case PROP_FRACTION:
 305       g_value_set_double (value, gtk_progress_get_current_percentage (GTK_PROGRESS (pbar)));
 306       break;
 307     case PROP_PULSE_STEP:
 308       g_value_set_double (value, pbar->pulse_fraction);
 309       break;
 310     case PROP_TEXT:
 311       g_value_set_string (value, gtk_progress_bar_get_text (pbar));
 312       break;
 313     default:
 314       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 315       break;
 316     }
 317 }
 318
 319 GtkWidget*
 320 gtk_progress_bar_new (void)
 321 {
 322   GtkWidget *pbar;
 323
 324   pbar = gtk_widget_new (GTK_TYPE_PROGRESS_BAR, NULL);
 325
 326   return pbar;
 327 }
 328
 329 GtkWidget*
 330 gtk_progress_bar_new_with_adjustment (GtkAdjustment *adjustment)
 331 {
 332   GtkWidget *pbar;
 333
 334   g_return_val_if_fail (GTK_IS_ADJUSTMENT (adjustment), NULL);
 335
 336   pbar = gtk_widget_new (GTK_TYPE_PROGRESS_BAR,
 337                          "adjustment", adjustment,
 338                          NULL);
 339
 340   return pbar;
 341 }
 342
 343 static void
 344 gtk_progress_bar_real_update (GtkProgress *progress)
 345 {
 346   GtkProgressBar *pbar;
 347   GtkWidget *widget;
 348
 349   g_return_if_fail (GTK_IS_PROGRESS (progress));
 350
 351   pbar = GTK_PROGRESS_BAR (progress);
 352   widget = GTK_WIDGET (progress);
 353
 354   if (pbar->bar_style == GTK_PROGRESS_CONTINUOUS ||
 355       GTK_PROGRESS (pbar)->activity_mode)
 356     {
 357       if (GTK_PROGRESS (pbar)->activity_mode)
 358         {
 359           guint size;
 360
 361           /* advance the block */
 362
 363           if (pbar->orientation == GTK_PROGRESS_LEFT_TO_RIGHT ||
 364               pbar->orientation == GTK_PROGRESS_RIGHT_TO_LEFT)
 365             {
 366               /* Update our activity step. */
 367
 368               pbar->activity_step = widget->allocation.width * pbar->pulse_fraction;
 369
 370               size = MAX (2, widget->allocation.width / pbar->activity_blocks);
 371
 372               if (pbar->activity_dir == 0)
 373                 {
 374                   pbar->activity_pos += pbar->activity_step;
 375                   if (pbar->activity_pos + size >=
 376                       widget->allocation.width -
 377                       widget->style->xthickness)
 378                     {
 379                       pbar->activity_pos = widget->allocation.width -
 380                         widget->style->xthickness - size;
 381                       pbar->activity_dir = 1;
 382                     }
 383                 }
 384               else
 385                 {
 386                   pbar->activity_pos -= pbar->activity_step;
 387                   if (pbar->activity_pos <= widget->style->xthickness)
 388                     {
 389                       pbar->activity_pos = widget->style->xthickness;
 390                       pbar->activity_dir = 0;
 391                     }
 392                 }
 393             }
 394           else
 395             {
 396               /* Update our activity step. */
 397
 398               pbar->activity_step = widget->allocation.height * pbar->pulse_fraction;
 399
 400               size = MAX (2, widget->allocation.height / pbar->activity_blocks);
 401
 402               if (pbar->activity_dir == 0)
 403                 {
 404                   pbar->activity_pos += pbar->activity_step;
 405                   if (pbar->activity_pos + size >=
 406                       widget->allocation.height -
 407                       widget->style->ythickness)
 408                     {
 409                       pbar->activity_pos = widget->allocation.height -
 410                         widget->style->ythickness - size;
 411                       pbar->activity_dir = 1;
 412                     }
 413                 }
 414               else
 415                 {
 416                   pbar->activity_pos -= pbar->activity_step;
 417                   if (pbar->activity_pos <= widget->style->ythickness)
 418                     {
 419                       pbar->activity_pos = widget->style->ythickness;
 420                       pbar->activity_dir = 0;
 421                     }
 422                 }
 423             }
 424         }
 425       gtk_progress_bar_paint (progress);
 426       gtk_widget_queue_draw (GTK_WIDGET (progress));
 427     }
 428   else
 429     {
 430       gint in_block;
 431
 432       in_block = -1 + (gint)(gtk_progress_get_current_percentage (progress) *
 433                              (gdouble)pbar->blocks);
 434
 435       if (pbar->in_block != in_block)
 436         {
 437           pbar->in_block = in_block;
 438           gtk_progress_bar_paint (progress);
 439           gtk_widget_queue_draw (GTK_WIDGET (progress));
 440         }
 441     }
 442 }
 443
 444 static void
 445 gtk_progress_bar_size_request (GtkWidget      *widget,
 446                                GtkRequisition *requisition)
 447 {
 448   GtkProgress *progress;
 449   GtkProgressBar *pbar;
 450   gchar *buf;
 451   PangoRectangle logical_rect;
 452   PangoLayout *layout;
 453
 454   g_return_if_fail (GTK_IS_PROGRESS_BAR (widget));
 455   g_return_if_fail (requisition != NULL);
 456
 457   progress = GTK_PROGRESS (widget);
 458   pbar = GTK_PROGRESS_BAR (widget);
 459
 460   if (progress->show_text && pbar->bar_style != GTK_PROGRESS_DISCRETE)
 461     {
 462       if (!progress->adjustment)
 463         gtk_progress_set_adjustment (progress, NULL);
 464
 465       buf = gtk_progress_get_text_from_value (progress, progress->adjustment->upper);
 466
 467       layout = gtk_widget_create_pango_layout (widget, buf);
 468       pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
 469
 470       g_object_unref (G_OBJECT (layout));
 471       g_free (buf);
 472     }
 473
 474   if (pbar->orientation == GTK_PROGRESS_LEFT_TO_RIGHT ||
 475       pbar->orientation == GTK_PROGRESS_RIGHT_TO_LEFT)
 476     {
 477       if (progress->show_text && pbar->bar_style != GTK_PROGRESS_DISCRETE)
 478         {
 479           requisition->width = MAX (MIN_HORIZONTAL_BAR_WIDTH,
 480                                     2 * widget->style->xthickness + 3 +
 481                                     logical_rect.width + 2 * TEXT_SPACING);
 482
 483           requisition->height = MAX (MIN_HORIZONTAL_BAR_HEIGHT,
 484                                      2 * widget->style->ythickness + 3 +
 485                                      logical_rect.height + 2 * TEXT_SPACING);
 486         }
 487       else
 488         {
 489           requisition->width = MIN_HORIZONTAL_BAR_WIDTH;
 490           requisition->height = MIN_HORIZONTAL_BAR_HEIGHT;
 491         }
 492     }
 493   else
 494     {
 495       if (progress->show_text && pbar->bar_style != GTK_PROGRESS_DISCRETE)
 496         {
 497           requisition->width = MAX (MIN_VERTICAL_BAR_WIDTH,
 498                                     2 * widget->style->xthickness + 3 +
 499                                     logical_rect.width + 2 * TEXT_SPACING);
 500
 501           requisition->height = MAX (MIN_VERTICAL_BAR_HEIGHT,
 502                                      2 * widget->style->ythickness + 3 +
 503                                      logical_rect.height + 2 * TEXT_SPACING);
 504         }
 505       else
 506         {
 507           requisition->width = MIN_VERTICAL_BAR_WIDTH;
 508           requisition->height = MIN_VERTICAL_BAR_HEIGHT;
 509         }
 510     }
 511 }
 512
 513 static void
 514 gtk_progress_bar_act_mode_enter (GtkProgress *progress)
 515 {
 516   GtkProgressBar *pbar;
 517   GtkWidget *widget;
 518   gint size;
 519
 520   pbar = GTK_PROGRESS_BAR (progress);
 521   widget = GTK_WIDGET (progress);
 522
 523   /* calculate start pos */
 524
 525   if (pbar->orientation == GTK_PROGRESS_LEFT_TO_RIGHT ||
 526       pbar->orientation == GTK_PROGRESS_RIGHT_TO_LEFT)
 527     {
 528       size = MAX (2, widget->allocation.width / pbar->activity_blocks);
 529
 530       if (pbar->orientation == GTK_PROGRESS_LEFT_TO_RIGHT)
 531         {
 532           pbar->activity_pos = widget->style->xthickness;
 533           pbar->activity_dir = 0;
 534         }
 535       else
 536         {
 537           pbar->activity_pos = widget->allocation.width -
 538             widget->style->xthickness - (widget->allocation.height -
 539                 widget->style->ythickness * 2);
 540           pbar->activity_dir = 1;
 541         }
 542     }
 543   else
 544     {
 545       size = MAX (2, widget->allocation.height / pbar->activity_blocks);
 546
 547       if (pbar->orientation == GTK_PROGRESS_TOP_TO_BOTTOM)
 548         {
 549           pbar->activity_pos = widget->style->ythickness;
 550           pbar->activity_dir = 0;
 551         }
 552       else
 553         {
 554           pbar->activity_pos = widget->allocation.height -
 555             widget->style->ythickness - (widget->allocation.width -
 556                 widget->style->xthickness * 2);
 557           pbar->activity_dir = 1;
 558         }
 559     }
 560 }
 561
 562 static void
 563 gtk_progress_bar_paint (GtkProgress *progress)
 564 {
 565   GtkProgressBar *pbar;
 566   GtkWidget *widget;
 567   gint amount;
 568   gint block_delta = 0;
 569   gint space = 0;
 570   gint i;
 571   gint x;
 572   gint y;
 573   gdouble percentage;
 574   gint size;
 575
 576   g_return_if_fail (GTK_IS_PROGRESS_BAR (progress));
 577
 578   pbar = GTK_PROGRESS_BAR (progress);
 579   widget = GTK_WIDGET (progress);
 580
 581   if (pbar->orientation == GTK_PROGRESS_LEFT_TO_RIGHT ||
 582       pbar->orientation == GTK_PROGRESS_RIGHT_TO_LEFT)
 583     space = widget->allocation.width -
 584       2 * widget->style->xthickness;
 585   else
 586     space = widget->allocation.height -
 587       2 * widget->style->ythickness;
 588
 589   percentage = gtk_progress_get_current_percentage (progress);
 590
 591   if (progress->offscreen_pixmap)
 592     {
 593       gtk_paint_box (widget->style,
 594                      progress->offscreen_pixmap,
 595                      GTK_STATE_NORMAL, GTK_SHADOW_IN,
 596                      NULL, widget, "trough",
 597                      0, 0,
 598                      widget->allocation.width,
 599                      widget->allocation.height);
 600
 601       if (progress->activity_mode)
 602         {
 603           if (pbar->orientation == GTK_PROGRESS_LEFT_TO_RIGHT ||
 604               pbar->orientation == GTK_PROGRESS_RIGHT_TO_LEFT)
 605             {
 606               size = MAX (2, widget->allocation.width / pbar->activity_blocks);
 607
 608               gtk_paint_box (widget->style,
 609                              progress->offscreen_pixmap,
 610                              GTK_STATE_PRELIGHT, GTK_SHADOW_OUT,
 611                              NULL, widget, "bar",
 612                              pbar->activity_pos,
 613                              widget->style->ythickness,
 614                              size,
 615                              widget->allocation.height - widget->style->ythickness * 2);
 616               return;
 617             }
 618           else
 619             {
 620               size = MAX (2, widget->allocation.height / pbar->activity_blocks);
 621
 622               gtk_paint_box (widget->style,
 623                              progress->offscreen_pixmap,
 624                              GTK_STATE_PRELIGHT, GTK_SHADOW_OUT,
 625                              NULL, widget, "bar",
 626                              widget->style->xthickness,
 627                              pbar->activity_pos,
 628                              widget->allocation.width - widget->style->xthickness * 2,
 629                              size);
 630               return;
 631             }
 632         }
 633
 634       amount = percentage * space;
 635
 636       if (amount > 0)
 637         {
 638           switch (pbar->orientation)
 639             {
 640
 641             case GTK_PROGRESS_LEFT_TO_RIGHT:
 642
 643               if (pbar->bar_style == GTK_PROGRESS_CONTINUOUS)
 644                 {
 645                   gtk_paint_box (widget->style,
 646                                  progress->offscreen_pixmap,
 647                                  GTK_STATE_PRELIGHT, GTK_SHADOW_OUT,
 648                                  NULL, widget, "bar",
 649                                  widget->style->xthickness,
 650                                  widget->style->ythickness,
 651                                  amount,
 652                                  widget->allocation.height - widget->style->ythickness * 2);
 653                 }
 654               else
 655                 {
 656                   x = widget->style->xthickness;
 657
 658                   for (i = 0; i <= pbar->in_block; i++)
 659                     {
 660                       block_delta = (((i + 1) * space) / pbar->blocks)
 661                         - ((i * space) / pbar->blocks);
 662
 663                       gtk_paint_box (widget->style,
 664                                      progress->offscreen_pixmap,
 665                                      GTK_STATE_PRELIGHT, GTK_SHADOW_OUT,
 666                                      NULL, widget, "bar",
 667                                      x,
 668                                      widget->style->ythickness,
 669                                      block_delta,
 670                                      widget->allocation.height - widget->style->ythickness * 2);
 671
 672                       x +=  block_delta;
 673                     }
 674                 }
 675               break;
 676
 677             case GTK_PROGRESS_RIGHT_TO_LEFT:
 678
 679               if (pbar->bar_style == GTK_PROGRESS_CONTINUOUS)
 680                 {
 681                   gtk_paint_box (widget->style,
 682                                  progress->offscreen_pixmap,
 683                                  GTK_STATE_PRELIGHT, GTK_SHADOW_OUT,
 684                                  NULL, widget, "bar",
 685                                  widget->allocation.width -
 686                                  widget->style->xthickness - amount,
 687                                  widget->style->ythickness,
 688                                  amount,
 689                                  widget->allocation.height -
 690                                  widget->style->ythickness * 2);
 691                 }
 692               else
 693                 {
 694                   x = widget->allocation.width -
 695                     widget->style->xthickness;
 696
 697                   for (i = 0; i <= pbar->in_block; i++)
 698                     {
 699                       block_delta = (((i + 1) * space) / pbar->blocks) -
 700                         ((i * space) / pbar->blocks);
 701
 702                       x -=  block_delta;
 703
 704                       gtk_paint_box (widget->style,
 705                                      progress->offscreen_pixmap,
 706                                      GTK_STATE_PRELIGHT, GTK_SHADOW_OUT,
 707                                      NULL, widget, "bar",
 708                                      x,
 709                                      widget->style->ythickness,
 710                                      block_delta,
 711                                      widget->allocation.height -
 712                                      widget->style->ythickness * 2);
 713                     }
 714                 }
 715               break;
 716
 717             case GTK_PROGRESS_BOTTOM_TO_TOP:
 718
 719               if (pbar->bar_style == GTK_PROGRESS_CONTINUOUS)
 720                 {
 721                   gtk_paint_box (widget->style,
 722                                  progress->offscreen_pixmap,
 723                                  GTK_STATE_PRELIGHT, GTK_SHADOW_OUT,
 724                                  NULL, widget, "bar",
 725                                  widget->style->xthickness,
 726                                  widget->allocation.height -
 727                                  widget->style->ythickness - amount,
 728                                  widget->allocation.width -
 729                                  widget->style->xthickness * 2,
 730                                  amount);
 731                 }
 732               else
 733                 {
 734                   y = widget->allocation.height -
 735                     widget->style->ythickness;
 736
 737                   for (i = 0; i <= pbar->in_block; i++)
 738                     {
 739                       block_delta = (((i + 1) * space) / pbar->blocks) -
 740                         ((i * space) / pbar->blocks);
 741
 742                       y -= block_delta;
 743
 744                       gtk_paint_box (widget->style,
 745                                      progress->offscreen_pixmap,
 746                                      GTK_STATE_PRELIGHT, GTK_SHADOW_OUT,
 747                                      NULL, widget, "bar",
 748                                      widget->style->xthickness,
 749                                      y,
 750                                      widget->allocation.width -
 751                                      widget->style->xthickness * 2,
 752                                      block_delta);
 753                     }
 754                 }
 755               break;
 756
 757             case GTK_PROGRESS_TOP_TO_BOTTOM:
 758
 759               if (pbar->bar_style == GTK_PROGRESS_CONTINUOUS)
 760                 {
 761                   gtk_paint_box (widget->style,
 762                                  progress->offscreen_pixmap,
 763                                  GTK_STATE_PRELIGHT, GTK_SHADOW_OUT,
 764                                  NULL, widget, "bar",
 765                                  widget->style->xthickness,
 766                                  widget->style->ythickness,
 767                                  widget->allocation.width -
 768                                  widget->style->xthickness * 2,
 769                                  amount);
 770                 }
 771               else
 772                 {
 773                   y = widget->style->ythickness;
 774
 775                   for (i = 0; i <= pbar->in_block; i++)
 776                     {
 777
 778                       block_delta = (((i + 1) * space) / pbar->blocks)
 779                         - ((i * space) / pbar->blocks);
 780
 781                       gtk_paint_box (widget->style,
 782                                      progress->offscreen_pixmap,
 783                                      GTK_STATE_PRELIGHT, GTK_SHADOW_OUT,
 784                                      NULL, widget, "bar",
 785                                      widget->style->xthickness,
 786                                      y,
 787                                      widget->allocation.width -
 788                                      widget->style->xthickness * 2,
 789                                      block_delta);
 790
 791                       y += block_delta;
 792                     }
 793                 }
 794               break;
 795
 796             default:
 797               break;
 798             }
 799         }
 800
 801       if (progress->show_text && pbar->bar_style != GTK_PROGRESS_DISCRETE)
 802         {
 803           gint x;
 804           gint y;
 805           gchar *buf;
 806           GdkRectangle rect;
 807           PangoLayout *layout;
 808           PangoRectangle logical_rect;
 809
 810           buf = gtk_progress_get_current_text (progress);
 811
 812           layout = gtk_widget_create_pango_layout (widget, buf);
 813           pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
 814
 815           x = widget->style->xthickness + 1 +
 816             (widget->allocation.width - 2 * widget->style->xthickness -
 817              3 - logical_rect.width)
 818             * progress->x_align;
 819
 820           y = widget->style->ythickness + 1 +
 821             (widget->allocation.height - 2 * widget->style->ythickness -
 822              3 - logical_rect.height)
 823             * progress->y_align;
 824
 825           rect.x = widget->style->xthickness + 1;
 826           rect.y = widget->style->ythickness + 1;
 827           rect.width = widget->allocation.width -
 828             2 * widget->style->xthickness - 3;
 829           rect.height = widget->allocation.height -
 830             2 * widget->style->ythickness - 3;
 831
 832           gtk_paint_layout (widget->style,
 833                             progress->offscreen_pixmap,
 834                             GTK_WIDGET_STATE (widget),
 835                             FALSE,
 836                             &rect,
 837                             widget,
 838                             "progressbar",
 839                             x, y,
 840                             layout);
 841
 842           g_object_unref (G_OBJECT (layout));
 843           g_free (buf);
 844         }
 845     }
 846 }
 847
 848 /*******************************************************************/
 849
 850 /**
 851  * gtk_progress_bar_set_fraction:
 852  * @pbar: a #GtkProgressBar
 853  * @fraction: fraction of the task that's been completed
 854  *
 855  * Causes the progress bar to "fill in" the given fraction
 856  * of the bar. The fraction should be between 0.0 and 1.0,
 857  * inclusive.
 858  *
 859  **/
 860 void
 861 gtk_progress_bar_set_fraction (GtkProgressBar *pbar,
 862                                gdouble         fraction)
 863 {
 864   g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
 865
 866   /* If we know the percentage, we don't want activity mode. */
 867   gtk_progress_set_activity_mode (GTK_PROGRESS (pbar), FALSE);
 868
 869   /* We use the deprecated GtkProgress interface internally.
 870    * Once everything's been deprecated for a good long time,
 871    * we can clean up all this code.
 872    */
 873   gtk_progress_set_percentage (GTK_PROGRESS (pbar), fraction);
 874
 875   g_object_notify (G_OBJECT (pbar), "fraction");
 876 }
 877
 878 /**
 879  * gtk_progress_bar_pulse:
 880  * @pbar: a #GtkProgressBar
 881  *
 882  * Indicates that some progress is made, but you don't know how much.
 883  * Causes the progress bar to enter "activity mode," where a block
 884  * bounces back and forth. Each call to gtk_progress_bar_pulse()
 885  * causes the block to move by a little bit (the amount of movement
 886  * per pulse is determined by gtk_progress_bar_set_pulse_step()).
 887  **/
 888 void
 889 gtk_progress_bar_pulse (GtkProgressBar *pbar)
 890 {
 891   g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
 892
 893   /* If we don't know the percentage, we must want activity mode. */
 894   gtk_progress_set_activity_mode (GTK_PROGRESS (pbar), TRUE);
 895
 896   /* Sigh. */
 897   gtk_progress_bar_real_update (GTK_PROGRESS (pbar));
 898 }
 899
 900 /**
 901  * gtk_progress_bar_set_text:
 902  * @pbar: a #GtkProgressBar
 903  * @text: a UTF-8 string
 904  *
 905  * Causes the given @text to appear superimposed on the progress bar.
 906  **/
 907 void
 908 gtk_progress_bar_set_text (GtkProgressBar *pbar,
 909                            const gchar    *text)
 910 {
 911   g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
 912
 913   if (text && *text)
 914     {
 915       gtk_progress_set_show_text (GTK_PROGRESS (pbar), TRUE);
 916       gtk_progress_set_format_string (GTK_PROGRESS (pbar), text);
 917     }
 918   else
 919     {
 920       gtk_progress_set_show_text (GTK_PROGRESS (pbar), FALSE);
 921       gtk_progress_set_format_string (GTK_PROGRESS (pbar), "");
 922     }
 923
 924   /* We don't support formats in this interface */
 925   GTK_PROGRESS (pbar)->use_text_format = FALSE;
 926
 927   g_object_notify (G_OBJECT (pbar), "text");
 928 }
 929
 930 /**
 931  * gtk_progress_bar_set_pulse_step:
 932  * @pbar: a #GtkProgressBar
 933  * @fraction: fraction between 0.0 and 1.0
 934  *
 935  * Sets the fraction of total progress bar length to move the
 936  * bouncing block for each call to gtk_progress_bar_pulse().
 937  **/
 938 void
 939 gtk_progress_bar_set_pulse_step   (GtkProgressBar *pbar,
 940                                    gdouble         fraction)
 941 {
 942   g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
 943
 944   pbar->pulse_fraction = fraction;
 945
 946   g_object_notify (G_OBJECT (pbar), "pulse_step");
 947 }
 948
 949 void
 950 gtk_progress_bar_update (GtkProgressBar *pbar,
 951                          gdouble         percentage)
 952 {
 953   g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
 954
 955   /* Use of gtk_progress_bar_update() is deprecated !
 956    * Use gtk_progress_bar_set_percentage ()
 957    */
 958
 959   gtk_progress_set_percentage (GTK_PROGRESS (pbar), percentage);
 960 }
 961
 962 /**
 963  * gtk_progress_bar_set_orientation:
 964  * @pbar: a #GtkProgressBar
 965  * @orientation: orientation of the progress bar
 966  *
 967  * Causes the progress bar to switch to a different orientation
 968  * (left-to-right, right-to-left, top-to-bottom, or bottom-to-top).
 969  **/
 970 void
 971 gtk_progress_bar_set_orientation (GtkProgressBar           *pbar,
 972                                   GtkProgressBarOrientation orientation)
 973 {
 974   g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
 975
 976   if (pbar->orientation != orientation)
 977     {
 978       pbar->orientation = orientation;
 979
 980       if (GTK_WIDGET_DRAWABLE (GTK_WIDGET (pbar)))
 981         gtk_widget_queue_resize (GTK_WIDGET (pbar));
 982
 983       g_object_notify (G_OBJECT (pbar), "orientation");
 984     }
 985 }
 986
 987 /**
 988  * gtk_progress_bar_get_text:
 989  * @pbar: a #GtkProgressBar
 990  *
 991  * Retrieves the text displayed superimposed on the progress bar,
 992  * if any, otherwise %NULL. The return value is a reference
 993  * to the text, not a copy of it, so will become invalid
 994  * if you change the text in the progress bar.
 995  *
 996  * Return value: text, or %NULL; this string is owned by the widget
 997  * and should not be modified or freed.
 998  **/
 999 G_CONST_RETURN gchar*
1000 gtk_progress_bar_get_text (GtkProgressBar *pbar)
1001 {
1002   g_return_val_if_fail (GTK_IS_PROGRESS_BAR (pbar), NULL);
1003
1004   if (GTK_PROGRESS (pbar)->use_text_format)
1005     return NULL;
1006   else
1007     return GTK_PROGRESS (pbar)->format;
1008 }
1009
1010 /**
1011  * gtk_progress_bar_get_fraction:
1012  * @pbar: a #GtkProgressBar
1013  *
1014  * Returns the current fraction of the task that's been completed.
1015  *
1016  * Return value: a fraction from 0.0 to 1.0
1017  **/
1018 gdouble
1019 gtk_progress_bar_get_fraction (GtkProgressBar *pbar)
1020 {
1021   g_return_val_if_fail (GTK_IS_PROGRESS_BAR (pbar), 0);
1022
1023   return gtk_progress_get_current_percentage (GTK_PROGRESS (pbar));
1024 }
1025
1026 /**
1027  * gtk_progress_bar_get_pulse_step:
1028  * @pbar: a #GtkProgressBar
1029  *
1030  * Retrieves the pulse step set with gtk_progress_bar_set_pulse_step()
1031  *
1032  * Return value: a fraction from 0.0 to 1.0
1033  **/
1034 gdouble
1035 gtk_progress_bar_get_pulse_step (GtkProgressBar *pbar)
1036 {
1037   g_return_val_if_fail (GTK_IS_PROGRESS_BAR (pbar), 0);
1038
1039   return pbar->pulse_fraction;
1040 }
1041
1042 /**
1043  * gtk_progress_bar_get_orientation:
1044  * @pbar: a #GtkProgressBar
1045  *
1046  * Retrieves the current progress bar orientation.
1047  *
1048  * Return value: orientation of the progress bar
1049  **/
1050 GtkProgressBarOrientation
1051 gtk_progress_bar_get_orientation (GtkProgressBar *pbar)
1052 {
1053   g_return_val_if_fail (GTK_IS_PROGRESS_BAR (pbar), 0);
1054
1055   return pbar->orientation;
1056 }
1057
1058 void
1059 gtk_progress_bar_set_bar_style (GtkProgressBar     *pbar,
1060                                 GtkProgressBarStyle bar_style)
1061 {
1062   g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
1063
1064   if (pbar->bar_style != bar_style)
1065     {
1066       pbar->bar_style = bar_style;
1067
1068       if (GTK_WIDGET_DRAWABLE (GTK_WIDGET (pbar)))
1069         gtk_widget_queue_resize (GTK_WIDGET (pbar));
1070
1071       g_object_notify (G_OBJECT (pbar), "bar_style");
1072     }
1073 }
1074
1075 void
1076 gtk_progress_bar_set_discrete_blocks (GtkProgressBar *pbar,
1077                                       guint           blocks)
1078 {
1079   g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
1080   g_return_if_fail (blocks > 1);
1081
1082   if (pbar->blocks != blocks)
1083     {
1084       pbar->blocks = blocks;
1085
1086       if (GTK_WIDGET_DRAWABLE (GTK_WIDGET (pbar)))
1087         gtk_widget_queue_resize (GTK_WIDGET (pbar));
1088
1089       g_object_notify (G_OBJECT (pbar), "discrete_blocks");
1090     }
1091 }
1092
1093 void
1094 gtk_progress_bar_set_activity_step (GtkProgressBar *pbar,
1095                                     guint           step)
1096 {
1097   g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
1098
1099   if (pbar->activity_step != step)
1100     {
1101       pbar->activity_step = step;
1102       g_object_notify (G_OBJECT (pbar), "activity_step");
1103     }
1104 }
1105
1106 void
1107 gtk_progress_bar_set_activity_blocks (GtkProgressBar *pbar,
1108                                       guint           blocks)
1109 {
1110   g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
1111   g_return_if_fail (blocks > 1);
1112
1113   if (pbar->activity_blocks != blocks)
1114     {
1115       pbar->activity_blocks = blocks;
1116       g_object_notify (G_OBJECT (pbar), "activity_blocks");
1117     }
1118 }