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 "gtkprivate.h"
  39 #include "gtkintl.h"
  40 #include "gtkalias.h"
  41
  42
  43 #define MIN_HORIZONTAL_BAR_WIDTH   150
  44 #define MIN_HORIZONTAL_BAR_HEIGHT  20
  45 #define MIN_VERTICAL_BAR_WIDTH     22
  46 #define MIN_VERTICAL_BAR_HEIGHT    80
  47 #define MAX_TEXT_LENGTH            80
  48 #define TEXT_SPACING               2
  49
  50 enum {
  51   PROP_0,
  52
  53   /* Supported args */
  54   PROP_FRACTION,
  55   PROP_PULSE_STEP,
  56   PROP_ORIENTATION,
  57   PROP_TEXT,
  58   PROP_ELLIPSIZE,
  59
  60   /* Deprecated args */
  61   PROP_ADJUSTMENT,
  62   PROP_BAR_STYLE,
  63   PROP_ACTIVITY_STEP,
  64   PROP_ACTIVITY_BLOCKS,
  65   PROP_DISCRETE_BLOCKS
  66 };
  67
  68 static void gtk_progress_bar_class_init    (GtkProgressBarClass *klass);
  69 static void gtk_progress_bar_init          (GtkProgressBar      *pbar);
  70 static void gtk_progress_bar_set_property  (GObject             *object,
  71                                             guint                prop_id,
  72                                             const GValue        *value,
  73                                             GParamSpec          *pspec);
  74 static void gtk_progress_bar_get_property  (GObject             *object,
  75                                             guint                prop_id,
  76                                             GValue              *value,
  77                                             GParamSpec          *pspec);
  78 static void gtk_progress_bar_size_request  (GtkWidget           *widget,
  79                                             GtkRequisition      *requisition);
  80 static void gtk_progress_bar_real_update   (GtkProgress         *progress);
  81 static void gtk_progress_bar_paint         (GtkProgress         *progress);
  82 static void gtk_progress_bar_act_mode_enter (GtkProgress        *progress);
  83
  84 static void gtk_progress_bar_set_bar_style_internal       (GtkProgressBar *pbar,
  85                                                            GtkProgressBarStyle style);
  86 static void gtk_progress_bar_set_discrete_blocks_internal (GtkProgressBar *pbar,
  87                                                            guint           blocks);
  88 static void gtk_progress_bar_set_activity_step_internal   (GtkProgressBar *pbar,
  89                                                            guint           step);
  90 static void gtk_progress_bar_set_activity_blocks_internal (GtkProgressBar *pbar,
  91                                                            guint           blocks);
  92
  93
  94 GType
  95 gtk_progress_bar_get_type (void)
  96 {
  97   static GType progress_bar_type = 0;
  98
  99   if (!progress_bar_type)
 100     {
 101       static const GTypeInfo progress_bar_info =
 102       {
 103         sizeof (GtkProgressBarClass),
 104         NULL,           /* base_init */
 105         NULL,           /* base_finalize */
 106         (GClassInitFunc) gtk_progress_bar_class_init,
 107         NULL,           /* class_finalize */
 108         NULL,           /* class_data */
 109         sizeof (GtkProgressBar),
 110         0,              /* n_preallocs */
 111         (GInstanceInitFunc) gtk_progress_bar_init,
 112       };
 113
 114       progress_bar_type =
 115         g_type_register_static (GTK_TYPE_PROGRESS, I_("GtkProgressBar"),
 116                                 &progress_bar_info, 0);
 117     }
 118
 119   return progress_bar_type;
 120 }
 121
 122 static void
 123 gtk_progress_bar_class_init (GtkProgressBarClass *class)
 124 {
 125   GObjectClass *gobject_class;
 126   GtkWidgetClass *widget_class;
 127   GtkProgressClass *progress_class;
 128
 129   gobject_class = G_OBJECT_CLASS (class);
 130   widget_class = (GtkWidgetClass *) class;
 131   progress_class = (GtkProgressClass *) class;
 132
 133   gobject_class->set_property = gtk_progress_bar_set_property;
 134   gobject_class->get_property = gtk_progress_bar_get_property;
 135
 136   widget_class->size_request = gtk_progress_bar_size_request;
 137
 138   progress_class->paint = gtk_progress_bar_paint;
 139   progress_class->update = gtk_progress_bar_real_update;
 140   progress_class->act_mode_enter = gtk_progress_bar_act_mode_enter;
 141
 142   g_object_class_install_property (gobject_class,
 143                                    PROP_ADJUSTMENT,
 144                                    g_param_spec_object ("adjustment",
 145                                                         P_("Adjustment"),
 146                                                         P_("The GtkAdjustment connected to the progress bar (Deprecated)"),
 147                                                         GTK_TYPE_ADJUSTMENT,
 148                                                         GTK_PARAM_READWRITE));
 149
 150   g_object_class_install_property (gobject_class,
 151                                    PROP_ORIENTATION,
 152                                    g_param_spec_enum ("orientation",
 153                                                       P_("Orientation"),
 154                                                       P_("Orientation and growth direction of the progress bar"),
 155                                                       GTK_TYPE_PROGRESS_BAR_ORIENTATION,
 156                                                       GTK_PROGRESS_LEFT_TO_RIGHT,
 157                                                       GTK_PARAM_READWRITE));
 158
 159   g_object_class_install_property (gobject_class,
 160                                    PROP_BAR_STYLE,
 161                                    g_param_spec_enum ("bar-style",
 162                                                       P_("Bar style"),
 163                                                       P_("Specifies the visual style of the bar in percentage mode (Deprecated)"),
 164                                                       GTK_TYPE_PROGRESS_BAR_STYLE,
 165                                                       GTK_PROGRESS_CONTINUOUS,
 166                                                       GTK_PARAM_READWRITE));
 167
 168   g_object_class_install_property (gobject_class,
 169                                    PROP_ACTIVITY_STEP,
 170                                    g_param_spec_uint ("activity-step",
 171                                                       P_("Activity Step"),
 172                                                       P_("The increment used for each iteration in activity mode (Deprecated)"),
 173                                                       0,
 174                                                       G_MAXUINT,
 175                                                       3,
 176                                                       GTK_PARAM_READWRITE));
 177
 178   g_object_class_install_property (gobject_class,
 179                                    PROP_ACTIVITY_BLOCKS,
 180                                    g_param_spec_uint ("activity-blocks",
 181                                                       P_("Activity Blocks"),
 182                                                       P_("The number of blocks which can fit in the progress bar area in activity mode (Deprecated)"),
 183                                                       2,
 184                                                       G_MAXUINT,
 185                                                       5,
 186                                                       GTK_PARAM_READWRITE));
 187
 188   g_object_class_install_property (gobject_class,
 189                                    PROP_DISCRETE_BLOCKS,
 190                                    g_param_spec_uint ("discrete-blocks",
 191                                                       P_("Discrete Blocks"),
 192                                                       P_("The number of discrete blocks in a progress bar (when shown in the discrete style)"),
 193                                                       2,
 194                                                       G_MAXUINT,
 195                                                       10,
 196                                                       GTK_PARAM_READWRITE));
 197
 198   g_object_class_install_property (gobject_class,
 199                                    PROP_FRACTION,
 200                                    g_param_spec_double ("fraction",
 201                                                         P_("Fraction"),
 202                                                         P_("The fraction of total work that has been completed"),
 203                                                         0.0,
 204                                                         1.0,
 205                                                         0.0,
 206                                                         GTK_PARAM_READWRITE));
 207
 208   g_object_class_install_property (gobject_class,
 209                                    PROP_PULSE_STEP,
 210                                    g_param_spec_double ("pulse-step",
 211                                                         P_("Pulse Step"),
 212                                                         P_("The fraction of total progress to move the bouncing block when pulsed"),
 213                                                         0.0,
 214                                                         1.0,
 215                                                         0.1,
 216                                                         GTK_PARAM_READWRITE));
 217
 218   g_object_class_install_property (gobject_class,
 219                                    PROP_TEXT,
 220                                    g_param_spec_string ("text",
 221                                                         P_("Text"),
 222                                                         P_("Text to be displayed in the progress bar"),
 223                                                         "%P %%",
 224                                                         GTK_PARAM_READWRITE));
 225
 226   /**
 227    * GtkProgressBar:ellipsize:
 228    *
 229    * The preferred place to ellipsize the string, if the progressbar does
 230    * not have enough room to display the entire string, specified as a
 231    * #PangoEllisizeMode.
 232    *
 233    * Note that setting this property to a value other than
 234    * %PANGO_ELLIPSIZE_NONE has the side-effect that the progressbar requests
 235    * only enough space to display the ellipsis "...". Another means to set a
 236    * progressbar's width is gtk_widget_set_size_request().
 237    *
 238    * Since: 2.6
 239    */
 240   g_object_class_install_property (gobject_class,
 241                                    PROP_ELLIPSIZE,
 242                                    g_param_spec_enum ("ellipsize",
 243                                                       P_("Ellipsize"),
 244                                                       P_("The preferred place to ellipsize the string, if the progressbar does not have enough room to display the entire string, if at all"),
 245                                                       PANGO_TYPE_ELLIPSIZE_MODE,
 246                                                       PANGO_ELLIPSIZE_NONE,
 247                                                       GTK_PARAM_READWRITE));
 248
 249 }
 250
 251 static void
 252 gtk_progress_bar_init (GtkProgressBar *pbar)
 253 {
 254   pbar->bar_style = GTK_PROGRESS_CONTINUOUS;
 255   pbar->blocks = 10;
 256   pbar->in_block = -1;
 257   pbar->orientation = GTK_PROGRESS_LEFT_TO_RIGHT;
 258   pbar->pulse_fraction = 0.1;
 259   pbar->activity_pos = 0;
 260   pbar->activity_dir = 1;
 261   pbar->activity_step = 3;
 262   pbar->activity_blocks = 5;
 263   pbar->ellipsize = PANGO_ELLIPSIZE_NONE;
 264 }
 265
 266 static void
 267 gtk_progress_bar_set_property (GObject      *object,
 268                                guint         prop_id,
 269                                const GValue *value,
 270                                GParamSpec   *pspec)
 271 {
 272   GtkProgressBar *pbar;
 273
 274   pbar = GTK_PROGRESS_BAR (object);
 275
 276   switch (prop_id)
 277     {
 278     case PROP_ADJUSTMENT:
 279       gtk_progress_set_adjustment (GTK_PROGRESS (pbar),
 280                                    GTK_ADJUSTMENT (g_value_get_object (value)));
 281       break;
 282     case PROP_ORIENTATION:
 283       gtk_progress_bar_set_orientation (pbar, g_value_get_enum (value));
 284       break;
 285     case PROP_BAR_STYLE:
 286       gtk_progress_bar_set_bar_style_internal (pbar, g_value_get_enum (value));
 287       break;
 288     case PROP_ACTIVITY_STEP:
 289       gtk_progress_bar_set_activity_step_internal (pbar, g_value_get_uint (value));
 290       break;
 291     case PROP_ACTIVITY_BLOCKS:
 292       gtk_progress_bar_set_activity_blocks_internal (pbar, g_value_get_uint (value));
 293       break;
 294     case PROP_DISCRETE_BLOCKS:
 295       gtk_progress_bar_set_discrete_blocks_internal (pbar, g_value_get_uint (value));
 296       break;
 297     case PROP_FRACTION:
 298       gtk_progress_bar_set_fraction (pbar, g_value_get_double (value));
 299       break;
 300     case PROP_PULSE_STEP:
 301       gtk_progress_bar_set_pulse_step (pbar, g_value_get_double (value));
 302       break;
 303     case PROP_TEXT:
 304       gtk_progress_bar_set_text (pbar, g_value_get_string (value));
 305       break;
 306     case PROP_ELLIPSIZE:
 307       gtk_progress_bar_set_ellipsize (pbar, g_value_get_enum (value));
 308       break;
 309     default:
 310       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 311       break;
 312     }
 313 }
 314
 315 static void
 316 gtk_progress_bar_get_property (GObject      *object,
 317                                guint         prop_id,
 318                                GValue       *value,
 319                                GParamSpec   *pspec)
 320 {
 321   GtkProgressBar *pbar;
 322
 323   pbar = GTK_PROGRESS_BAR (object);
 324
 325   switch (prop_id)
 326     {
 327     case PROP_ADJUSTMENT:
 328       g_value_set_object (value, GTK_PROGRESS (pbar)->adjustment);
 329       break;
 330     case PROP_ORIENTATION:
 331       g_value_set_enum (value, pbar->orientation);
 332       break;
 333     case PROP_BAR_STYLE:
 334       g_value_set_enum (value, pbar->bar_style);
 335       break;
 336     case PROP_ACTIVITY_STEP:
 337       g_value_set_uint (value, pbar->activity_step);
 338       break;
 339     case PROP_ACTIVITY_BLOCKS:
 340       g_value_set_uint (value, pbar->activity_blocks);
 341       break;
 342     case PROP_DISCRETE_BLOCKS:
 343       g_value_set_uint (value, pbar->blocks);
 344       break;
 345     case PROP_FRACTION:
 346       g_value_set_double (value, gtk_progress_get_current_percentage (GTK_PROGRESS (pbar)));
 347       break;
 348     case PROP_PULSE_STEP:
 349       g_value_set_double (value, pbar->pulse_fraction);
 350       break;
 351     case PROP_TEXT:
 352       g_value_set_string (value, gtk_progress_bar_get_text (pbar));
 353       break;
 354     case PROP_ELLIPSIZE:
 355       g_value_set_enum (value, pbar->ellipsize);
 356       break;
 357     default:
 358       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 359       break;
 360     }
 361 }
 362
 363 GtkWidget*
 364 gtk_progress_bar_new (void)
 365 {
 366   GtkWidget *pbar;
 367
 368   pbar = gtk_widget_new (GTK_TYPE_PROGRESS_BAR, NULL);
 369
 370   return pbar;
 371 }
 372
 373 GtkWidget*
 374 gtk_progress_bar_new_with_adjustment (GtkAdjustment *adjustment)
 375 {
 376   GtkWidget *pbar;
 377
 378   g_return_val_if_fail (GTK_IS_ADJUSTMENT (adjustment), NULL);
 379
 380   pbar = gtk_widget_new (GTK_TYPE_PROGRESS_BAR,
 381                          "adjustment", adjustment,
 382                          NULL);
 383
 384   return pbar;
 385 }
 386
 387 static void
 388 gtk_progress_bar_real_update (GtkProgress *progress)
 389 {
 390   GtkProgressBar *pbar;
 391   GtkWidget *widget;
 392
 393   g_return_if_fail (GTK_IS_PROGRESS (progress));
 394
 395   pbar = GTK_PROGRESS_BAR (progress);
 396   widget = GTK_WIDGET (progress);
 397
 398   if (pbar->bar_style == GTK_PROGRESS_CONTINUOUS ||
 399       GTK_PROGRESS (pbar)->activity_mode)
 400     {
 401       if (GTK_PROGRESS (pbar)->activity_mode)
 402         {
 403           guint size;
 404
 405           /* advance the block */
 406
 407           if (pbar->orientation == GTK_PROGRESS_LEFT_TO_RIGHT ||
 408               pbar->orientation == GTK_PROGRESS_RIGHT_TO_LEFT)
 409             {
 410               /* Update our activity step. */
 411
 412               pbar->activity_step = widget->allocation.width * pbar->pulse_fraction;
 413
 414               size = MAX (2, widget->allocation.width / pbar->activity_blocks);
 415
 416               if (pbar->activity_dir == 0)
 417                 {
 418                   pbar->activity_pos += pbar->activity_step;
 419                   if (pbar->activity_pos + size >=
 420                       widget->allocation.width -
 421                       widget->style->xthickness)
 422                     {
 423                       pbar->activity_pos = widget->allocation.width -
 424                         widget->style->xthickness - size;
 425                       pbar->activity_dir = 1;
 426                     }
 427                 }
 428               else
 429                 {
 430                   pbar->activity_pos -= pbar->activity_step;
 431                   if (pbar->activity_pos <= widget->style->xthickness)
 432                     {
 433                       pbar->activity_pos = widget->style->xthickness;
 434                       pbar->activity_dir = 0;
 435                     }
 436                 }
 437             }
 438           else
 439             {
 440               /* Update our activity step. */
 441
 442               pbar->activity_step = widget->allocation.height * pbar->pulse_fraction;
 443
 444               size = MAX (2, widget->allocation.height / pbar->activity_blocks);
 445
 446               if (pbar->activity_dir == 0)
 447                 {
 448                   pbar->activity_pos += pbar->activity_step;
 449                   if (pbar->activity_pos + size >=
 450                       widget->allocation.height -
 451                       widget->style->ythickness)
 452                     {
 453                       pbar->activity_pos = widget->allocation.height -
 454                         widget->style->ythickness - size;
 455                       pbar->activity_dir = 1;
 456                     }
 457                 }
 458               else
 459                 {
 460                   pbar->activity_pos -= pbar->activity_step;
 461                   if (pbar->activity_pos <= widget->style->ythickness)
 462                     {
 463                       pbar->activity_pos = widget->style->ythickness;
 464                       pbar->activity_dir = 0;
 465                     }
 466                 }
 467             }
 468         }
 469       gtk_progress_bar_paint (progress);
 470       gtk_widget_queue_draw (GTK_WIDGET (progress));
 471     }
 472   else
 473     {
 474       gint in_block;
 475
 476       in_block = -1 + (gint)(gtk_progress_get_current_percentage (progress) *
 477                              (gdouble)pbar->blocks);
 478
 479       if (pbar->in_block != in_block)
 480         {
 481           pbar->in_block = in_block;
 482           gtk_progress_bar_paint (progress);
 483           gtk_widget_queue_draw (GTK_WIDGET (progress));
 484         }
 485     }
 486 }
 487
 488 static void
 489 gtk_progress_bar_size_request (GtkWidget      *widget,
 490                                GtkRequisition *requisition)
 491 {
 492   GtkProgress *progress;
 493   GtkProgressBar *pbar;
 494   gchar *buf;
 495   PangoRectangle logical_rect;
 496   PangoLayout *layout;
 497   gint width, height;
 498
 499   g_return_if_fail (GTK_IS_PROGRESS_BAR (widget));
 500   g_return_if_fail (requisition != NULL);
 501
 502   progress = GTK_PROGRESS (widget);
 503   pbar = GTK_PROGRESS_BAR (widget);
 504
 505   width = 2 * widget->style->xthickness + 3 + 2 * TEXT_SPACING;
 506   height = 2 * widget->style->ythickness + 3 + 2 * TEXT_SPACING;
 507
 508   if (progress->show_text && pbar->bar_style != GTK_PROGRESS_DISCRETE)
 509     {
 510       if (!progress->adjustment)
 511         gtk_progress_set_adjustment (progress, NULL);
 512
 513       buf = gtk_progress_get_text_from_value (progress, progress->adjustment->upper);
 514
 515       layout = gtk_widget_create_pango_layout (widget, buf);
 516
 517       pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
 518
 519       if (pbar->ellipsize)
 520         {
 521           PangoContext *context;
 522           PangoFontMetrics *metrics;
 523           gint char_width;
 524
 525           /* The minimum size for ellipsized text is ~ 3 chars */
 526           context = pango_layout_get_context (layout);
 527           metrics = pango_context_get_metrics (context, widget->style->font_desc, pango_context_get_language (context));
 528
 529           char_width = pango_font_metrics_get_approximate_char_width (metrics);
 530           pango_font_metrics_unref (metrics);
 531
 532           width += PANGO_PIXELS (char_width) * 3;
 533         }
 534       else
 535         width += logical_rect.width;
 536
 537       height += logical_rect.height;
 538
 539       g_object_unref (layout);
 540       g_free (buf);
 541     }
 542
 543   if (pbar->orientation == GTK_PROGRESS_LEFT_TO_RIGHT ||
 544       pbar->orientation == GTK_PROGRESS_RIGHT_TO_LEFT)
 545     {
 546       requisition->width = MAX (MIN_HORIZONTAL_BAR_WIDTH, width);
 547       requisition->height = MAX (MIN_HORIZONTAL_BAR_HEIGHT, height);
 548     }
 549   else
 550     {
 551       requisition->width = MAX (MIN_VERTICAL_BAR_WIDTH, width);
 552       requisition->height = MAX (MIN_VERTICAL_BAR_HEIGHT, height);
 553     }
 554 }
 555
 556 static void
 557 gtk_progress_bar_act_mode_enter (GtkProgress *progress)
 558 {
 559   GtkProgressBar *pbar;
 560   GtkWidget *widget;
 561   GtkProgressBarOrientation orientation;
 562
 563   pbar = GTK_PROGRESS_BAR (progress);
 564   widget = GTK_WIDGET (progress);
 565
 566   orientation = pbar->orientation;
 567   if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
 568     {
 569       if (pbar->orientation == GTK_PROGRESS_LEFT_TO_RIGHT)
 570         orientation = GTK_PROGRESS_RIGHT_TO_LEFT;
 571       else if (pbar->orientation == GTK_PROGRESS_RIGHT_TO_LEFT)
 572         orientation = GTK_PROGRESS_LEFT_TO_RIGHT;
 573     }
 574
 575   /* calculate start pos */
 576
 577   if (orientation == GTK_PROGRESS_LEFT_TO_RIGHT ||
 578       orientation == GTK_PROGRESS_RIGHT_TO_LEFT)
 579     {
 580       if (orientation == GTK_PROGRESS_LEFT_TO_RIGHT)
 581         {
 582           pbar->activity_pos = widget->style->xthickness;
 583           pbar->activity_dir = 0;
 584         }
 585       else
 586         {
 587           pbar->activity_pos = widget->allocation.width -
 588             widget->style->xthickness - (widget->allocation.height -
 589                 widget->style->ythickness * 2);
 590           pbar->activity_dir = 1;
 591         }
 592     }
 593   else
 594     {
 595       if (orientation == GTK_PROGRESS_TOP_TO_BOTTOM)
 596         {
 597           pbar->activity_pos = widget->style->ythickness;
 598           pbar->activity_dir = 0;
 599         }
 600       else
 601         {
 602           pbar->activity_pos = widget->allocation.height -
 603             widget->style->ythickness - (widget->allocation.width -
 604                 widget->style->xthickness * 2);
 605           pbar->activity_dir = 1;
 606         }
 607     }
 608 }
 609
 610 static void
 611 gtk_progress_bar_paint_activity (GtkProgressBar            *pbar,
 612                                  GtkProgressBarOrientation  orientation)
 613 {
 614   GtkWidget *widget = GTK_WIDGET (pbar);
 615   GtkProgress *progress = GTK_PROGRESS (pbar);
 616   GdkRectangle area;
 617
 618   switch (orientation)
 619     {
 620     case GTK_PROGRESS_LEFT_TO_RIGHT:
 621     case GTK_PROGRESS_RIGHT_TO_LEFT:
 622       area.x = pbar->activity_pos;
 623       area.y = widget->style->ythickness;
 624       area.width = MAX (2, widget->allocation.width / pbar->activity_blocks);
 625       area.height = widget->allocation.height - 2 * widget->style->ythickness;
 626       break;
 627
 628     case GTK_PROGRESS_TOP_TO_BOTTOM:
 629     case GTK_PROGRESS_BOTTOM_TO_TOP:
 630       area.x = widget->style->xthickness;
 631       area.y = pbar->activity_pos;
 632       area.width = widget->allocation.width - 2 * widget->style->xthickness;
 633       area.height = MAX (2, widget->allocation.height / pbar->activity_blocks);
 634       break;
 635
 636     default:
 637       return;
 638       break;
 639     }
 640
 641   gtk_paint_box (widget->style,
 642                  progress->offscreen_pixmap,
 643                  GTK_STATE_PRELIGHT, GTK_SHADOW_OUT,
 644                  &area, widget, "bar",
 645                  area.x, area.y, area.width, area.height);
 646 }
 647
 648 static void
 649 gtk_progress_bar_paint_continuous (GtkProgressBar            *pbar,
 650                                    gint                       amount,
 651                                    GtkProgressBarOrientation  orientation)
 652 {
 653   GdkRectangle area;
 654   GtkWidget *widget = GTK_WIDGET (pbar);
 655
 656   if (amount <= 0)
 657     return;
 658
 659   switch (orientation)
 660     {
 661     case GTK_PROGRESS_LEFT_TO_RIGHT:
 662     case GTK_PROGRESS_RIGHT_TO_LEFT:
 663       area.width = amount;
 664       area.height = widget->allocation.height - widget->style->ythickness * 2;
 665       area.y = widget->style->ythickness;
 666
 667       area.x = widget->style->xthickness;
 668       if (orientation == GTK_PROGRESS_RIGHT_TO_LEFT)
 669         area.x = widget->allocation.width - amount - area.x;
 670       break;
 671
 672     case GTK_PROGRESS_TOP_TO_BOTTOM:
 673     case GTK_PROGRESS_BOTTOM_TO_TOP:
 674       area.width = widget->allocation.width - widget->style->xthickness * 2;
 675       area.height = amount;
 676       area.x = widget->style->xthickness;
 677
 678       area.y = widget->style->ythickness;
 679       if (orientation == GTK_PROGRESS_BOTTOM_TO_TOP)
 680         area.y = widget->allocation.height - amount - area.y;
 681       break;
 682
 683     default:
 684       return;
 685       break;
 686     }
 687
 688   gtk_paint_box (widget->style,
 689                  GTK_PROGRESS (pbar)->offscreen_pixmap,
 690                  GTK_STATE_PRELIGHT, GTK_SHADOW_OUT,
 691                  &area, widget, "bar",
 692                  area.x, area.y, area.width, area.height);
 693 }
 694
 695 static void
 696 gtk_progress_bar_paint_discrete (GtkProgressBar            *pbar,
 697                                  GtkProgressBarOrientation  orientation)
 698 {
 699   GtkWidget *widget = GTK_WIDGET (pbar);
 700   gint i;
 701
 702   for (i = 0; i <= pbar->in_block; i++)
 703     {
 704       GdkRectangle area;
 705       gint space;
 706
 707       switch (orientation)
 708         {
 709         case GTK_PROGRESS_LEFT_TO_RIGHT:
 710         case GTK_PROGRESS_RIGHT_TO_LEFT:
 711           space = widget->allocation.width - 2 * widget->style->xthickness;
 712
 713           area.x = widget->style->xthickness + (i * space) / pbar->blocks;
 714           area.y = widget->style->ythickness;
 715           area.width = widget->style->xthickness + ((i + 1) * space) / pbar->blocks - area.x;
 716           area.height = widget->allocation.height - 2 * widget->style->ythickness;
 717
 718           if (orientation == GTK_PROGRESS_RIGHT_TO_LEFT)
 719             area.x = widget->allocation.width - area.width - area.x;
 720           break;
 721
 722         case GTK_PROGRESS_TOP_TO_BOTTOM:
 723         case GTK_PROGRESS_BOTTOM_TO_TOP:
 724           space = widget->allocation.height - 2 * widget->style->ythickness;
 725
 726           area.x = widget->style->xthickness;
 727           area.y = widget->style->ythickness + (i * space) / pbar->blocks;
 728           area.width = widget->allocation.width - 2 * widget->style->xthickness;
 729           area.height = widget->style->ythickness + ((i + 1) * space) / pbar->blocks - area.y;
 730
 731           if (orientation == GTK_PROGRESS_BOTTOM_TO_TOP)
 732             area.y = widget->allocation.height - area.height - area.y;
 733           break;
 734
 735         default:
 736           return;
 737           break;
 738         }
 739
 740       gtk_paint_box (widget->style,
 741                      GTK_PROGRESS (pbar)->offscreen_pixmap,
 742                      GTK_STATE_PRELIGHT, GTK_SHADOW_OUT,
 743                      &area, widget, "bar",
 744                      area.x, area.y, area.width, area.height);
 745     }
 746 }
 747
 748 static void
 749 gtk_progress_bar_paint_text (GtkProgressBar            *pbar,
 750                              gint                       amount,
 751                              GtkProgressBarOrientation  orientation)
 752 {
 753   GtkProgress *progress = GTK_PROGRESS (pbar);
 754   GtkWidget *widget = GTK_WIDGET (pbar);
 755
 756   gint x;
 757   gint y;
 758   gchar *buf;
 759   GdkRectangle rect;
 760   PangoLayout *layout;
 761   PangoRectangle logical_rect;
 762   GdkRectangle prelight_clip, normal_clip;
 763
 764   buf = gtk_progress_get_current_text (progress);
 765
 766   layout = gtk_widget_create_pango_layout (widget, buf);
 767   pango_layout_set_ellipsize (layout, pbar->ellipsize);
 768   if (pbar->ellipsize)
 769     pango_layout_set_width (layout, widget->allocation.width * PANGO_SCALE);
 770
 771   pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
 772
 773   x = widget->style->xthickness + 1 +
 774     (widget->allocation.width - 2 * widget->style->xthickness -
 775      2 - logical_rect.width)
 776     * progress->x_align;
 777
 778   y = widget->style->ythickness + 1 +
 779     (widget->allocation.height - 2 * widget->style->ythickness -
 780      2 - logical_rect.height)
 781     * progress->y_align;
 782
 783   rect.x = widget->style->xthickness;
 784   rect.y = widget->style->ythickness;
 785   rect.width = widget->allocation.width - 2 * widget->style->xthickness;
 786   rect.height = widget->allocation.height - 2 * widget->style->ythickness;
 787
 788   prelight_clip = normal_clip = rect;
 789
 790   switch (orientation)
 791     {
 792     case GTK_PROGRESS_LEFT_TO_RIGHT:
 793       prelight_clip.width = amount;
 794       normal_clip.x += amount;
 795       normal_clip.width -= amount;
 796       break;
 797
 798     case GTK_PROGRESS_RIGHT_TO_LEFT:
 799       normal_clip.width -= amount;
 800       prelight_clip.x += normal_clip.width;
 801       prelight_clip.width -= normal_clip.width;
 802       break;
 803
 804     case GTK_PROGRESS_TOP_TO_BOTTOM:
 805       prelight_clip.height = amount;
 806       normal_clip.y += amount;
 807       normal_clip.height -= amount;
 808       break;
 809
 810     case GTK_PROGRESS_BOTTOM_TO_TOP:
 811       normal_clip.height -= amount;
 812       prelight_clip.y += normal_clip.height;
 813       prelight_clip.height -= normal_clip.height;
 814       break;
 815     }
 816
 817   gtk_paint_layout (widget->style,
 818                     progress->offscreen_pixmap,
 819                     GTK_STATE_PRELIGHT,
 820                     FALSE,
 821                     &prelight_clip,
 822                     widget,
 823                     "progressbar",
 824                     x, y,
 825                     layout);
 826
 827   gtk_paint_layout (widget->style,
 828                     progress->offscreen_pixmap,
 829                     GTK_STATE_NORMAL,
 830                     FALSE,
 831                     &normal_clip,
 832                     widget,
 833                     "progressbar",
 834                     x, y,
 835                     layout);
 836
 837   g_object_unref (layout);
 838   g_free (buf);
 839 }
 840
 841 static void
 842 gtk_progress_bar_paint (GtkProgress *progress)
 843 {
 844   GtkProgressBar *pbar;
 845   GtkWidget *widget;
 846
 847   GtkProgressBarOrientation orientation;
 848
 849   g_return_if_fail (GTK_IS_PROGRESS_BAR (progress));
 850
 851   pbar = GTK_PROGRESS_BAR (progress);
 852   widget = GTK_WIDGET (progress);
 853
 854   orientation = pbar->orientation;
 855   if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
 856     {
 857       if (pbar->orientation == GTK_PROGRESS_LEFT_TO_RIGHT)
 858         orientation = GTK_PROGRESS_RIGHT_TO_LEFT;
 859       else if (pbar->orientation == GTK_PROGRESS_RIGHT_TO_LEFT)
 860         orientation = GTK_PROGRESS_LEFT_TO_RIGHT;
 861     }
 862
 863   if (progress->offscreen_pixmap)
 864     {
 865       gtk_paint_box (widget->style,
 866                      progress->offscreen_pixmap,
 867                      GTK_STATE_NORMAL, GTK_SHADOW_IN,
 868                      NULL, widget, "trough",
 869                      0, 0,
 870                      widget->allocation.width,
 871                      widget->allocation.height);
 872
 873       if (progress->activity_mode)
 874         {
 875           gtk_progress_bar_paint_activity (pbar, orientation);
 876         }
 877       else
 878         {
 879           gint amount;
 880           gint space;
 881
 882           if (orientation == GTK_PROGRESS_LEFT_TO_RIGHT ||
 883               orientation == GTK_PROGRESS_RIGHT_TO_LEFT)
 884             space = widget->allocation.width - 2 * widget->style->xthickness;
 885           else
 886             space = widget->allocation.height - 2 * widget->style->ythickness;
 887
 888           amount = space *
 889             gtk_progress_get_current_percentage (GTK_PROGRESS (pbar));
 890
 891           if (pbar->bar_style == GTK_PROGRESS_CONTINUOUS)
 892             {
 893               gtk_progress_bar_paint_continuous (pbar, amount, orientation);
 894
 895               if (GTK_PROGRESS (pbar)->show_text)
 896                 gtk_progress_bar_paint_text (pbar, amount, orientation);
 897             }
 898           else
 899             gtk_progress_bar_paint_discrete (pbar, orientation);
 900         }
 901     }
 902 }
 903
 904 static void
 905 gtk_progress_bar_set_bar_style_internal (GtkProgressBar     *pbar,
 906                                          GtkProgressBarStyle bar_style)
 907 {
 908   g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
 909
 910   if (pbar->bar_style != bar_style)
 911     {
 912       pbar->bar_style = bar_style;
 913
 914       if (GTK_WIDGET_DRAWABLE (GTK_WIDGET (pbar)))
 915         gtk_widget_queue_resize (GTK_WIDGET (pbar));
 916
 917       g_object_notify (G_OBJECT (pbar), "bar-style");
 918     }
 919 }
 920
 921 static void
 922 gtk_progress_bar_set_discrete_blocks_internal (GtkProgressBar *pbar,
 923                                                guint           blocks)
 924 {
 925   g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
 926   g_return_if_fail (blocks > 1);
 927
 928   if (pbar->blocks != blocks)
 929     {
 930       pbar->blocks = blocks;
 931
 932       if (GTK_WIDGET_DRAWABLE (GTK_WIDGET (pbar)))
 933         gtk_widget_queue_resize (GTK_WIDGET (pbar));
 934
 935       g_object_notify (G_OBJECT (pbar), "discrete-blocks");
 936     }
 937 }
 938
 939 static void
 940 gtk_progress_bar_set_activity_step_internal (GtkProgressBar *pbar,
 941                                              guint           step)
 942 {
 943   g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
 944
 945   if (pbar->activity_step != step)
 946     {
 947       pbar->activity_step = step;
 948       g_object_notify (G_OBJECT (pbar), "activity-step");
 949     }
 950 }
 951
 952 static void
 953 gtk_progress_bar_set_activity_blocks_internal (GtkProgressBar *pbar,
 954                                                guint           blocks)
 955 {
 956   g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
 957   g_return_if_fail (blocks > 1);
 958
 959   if (pbar->activity_blocks != blocks)
 960     {
 961       pbar->activity_blocks = blocks;
 962       g_object_notify (G_OBJECT (pbar), "activity-blocks");
 963     }
 964 }
 965
 966 /*******************************************************************/
 967
 968 /**
 969  * gtk_progress_bar_set_fraction:
 970  * @pbar: a #GtkProgressBar
 971  * @fraction: fraction of the task that's been completed
 972  *
 973  * Causes the progress bar to "fill in" the given fraction
 974  * of the bar. The fraction should be between 0.0 and 1.0,
 975  * inclusive.
 976  *
 977  **/
 978 void
 979 gtk_progress_bar_set_fraction (GtkProgressBar *pbar,
 980                                gdouble         fraction)
 981 {
 982   g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
 983
 984   /* If we know the percentage, we don't want activity mode. */
 985   gtk_progress_set_activity_mode (GTK_PROGRESS (pbar), FALSE);
 986
 987   /* We use the deprecated GtkProgress interface internally.
 988    * Once everything's been deprecated for a good long time,
 989    * we can clean up all this code.
 990    */
 991   gtk_progress_set_percentage (GTK_PROGRESS (pbar), fraction);
 992
 993   g_object_notify (G_OBJECT (pbar), "fraction");
 994 }
 995
 996 /**
 997  * gtk_progress_bar_pulse:
 998  * @pbar: a #GtkProgressBar
 999  *
1000  * Indicates that some progress is made, but you don't know how much.
1001  * Causes the progress bar to enter "activity mode," where a block
1002  * bounces back and forth. Each call to gtk_progress_bar_pulse()
1003  * causes the block to move by a little bit (the amount of movement
1004  * per pulse is determined by gtk_progress_bar_set_pulse_step()).
1005  **/
1006 void
1007 gtk_progress_bar_pulse (GtkProgressBar *pbar)
1008 {
1009   g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
1010
1011   /* If we don't know the percentage, we must want activity mode. */
1012   gtk_progress_set_activity_mode (GTK_PROGRESS (pbar), TRUE);
1013
1014   /* Sigh. */
1015   gtk_progress_bar_real_update (GTK_PROGRESS (pbar));
1016 }
1017
1018 /**
1019  * gtk_progress_bar_set_text:
1020  * @pbar: a #GtkProgressBar
1021  * @text: a UTF-8 string, or %NULL
1022  *
1023  * Causes the given @text to appear superimposed on the progress bar.
1024  **/
1025 void
1026 gtk_progress_bar_set_text (GtkProgressBar *pbar,
1027                            const gchar    *text)
1028 {
1029   g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
1030
1031   gtk_progress_set_show_text (GTK_PROGRESS (pbar), text && *text);
1032   gtk_progress_set_format_string (GTK_PROGRESS (pbar), text);
1033
1034   /* We don't support formats in this interface, but turn
1035    * them back on for NULL, which should put us back to
1036    * the initial state.
1037    */
1038   GTK_PROGRESS (pbar)->use_text_format = (text == NULL);
1039
1040   g_object_notify (G_OBJECT (pbar), "text");
1041 }
1042
1043 /**
1044  * gtk_progress_bar_set_pulse_step:
1045  * @pbar: a #GtkProgressBar
1046  * @fraction: fraction between 0.0 and 1.0
1047  *
1048  * Sets the fraction of total progress bar length to move the
1049  * bouncing block for each call to gtk_progress_bar_pulse().
1050  **/
1051 void
1052 gtk_progress_bar_set_pulse_step   (GtkProgressBar *pbar,
1053                                    gdouble         fraction)
1054 {
1055   g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
1056
1057   pbar->pulse_fraction = fraction;
1058
1059   g_object_notify (G_OBJECT (pbar), "pulse-step");
1060 }
1061
1062 void
1063 gtk_progress_bar_update (GtkProgressBar *pbar,
1064                          gdouble         percentage)
1065 {
1066   g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
1067
1068   /* Use of gtk_progress_bar_update() is deprecated !
1069    * Use gtk_progress_bar_set_percentage ()
1070    */
1071
1072   gtk_progress_set_percentage (GTK_PROGRESS (pbar), percentage);
1073 }
1074
1075 /**
1076  * gtk_progress_bar_set_orientation:
1077  * @pbar: a #GtkProgressBar
1078  * @orientation: orientation of the progress bar
1079  *
1080  * Causes the progress bar to switch to a different orientation
1081  * (left-to-right, right-to-left, top-to-bottom, or bottom-to-top).
1082  **/
1083 void
1084 gtk_progress_bar_set_orientation (GtkProgressBar           *pbar,
1085                                   GtkProgressBarOrientation orientation)
1086 {
1087   g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
1088
1089   if (pbar->orientation != orientation)
1090     {
1091       pbar->orientation = orientation;
1092
1093       if (GTK_WIDGET_DRAWABLE (GTK_WIDGET (pbar)))
1094         gtk_widget_queue_resize (GTK_WIDGET (pbar));
1095
1096       g_object_notify (G_OBJECT (pbar), "orientation");
1097     }
1098 }
1099
1100 /**
1101  * gtk_progress_bar_get_text:
1102  * @pbar: a #GtkProgressBar
1103  *
1104  * Retrieves the text displayed superimposed on the progress bar,
1105  * if any, otherwise %NULL. The return value is a reference
1106  * to the text, not a copy of it, so will become invalid
1107  * if you change the text in the progress bar.
1108  *
1109  * Return value: text, or %NULL; this string is owned by the widget
1110  * and should not be modified or freed.
1111  **/
1112 G_CONST_RETURN gchar*
1113 gtk_progress_bar_get_text (GtkProgressBar *pbar)
1114 {
1115   g_return_val_if_fail (GTK_IS_PROGRESS_BAR (pbar), NULL);
1116
1117   if (GTK_PROGRESS (pbar)->use_text_format)
1118     return NULL;
1119   else
1120     return GTK_PROGRESS (pbar)->format;
1121 }
1122
1123 /**
1124  * gtk_progress_bar_get_fraction:
1125  * @pbar: a #GtkProgressBar
1126  *
1127  * Returns the current fraction of the task that's been completed.
1128  *
1129  * Return value: a fraction from 0.0 to 1.0
1130  **/
1131 gdouble
1132 gtk_progress_bar_get_fraction (GtkProgressBar *pbar)
1133 {
1134   g_return_val_if_fail (GTK_IS_PROGRESS_BAR (pbar), 0);
1135
1136   return gtk_progress_get_current_percentage (GTK_PROGRESS (pbar));
1137 }
1138
1139 /**
1140  * gtk_progress_bar_get_pulse_step:
1141  * @pbar: a #GtkProgressBar
1142  *
1143  * Retrieves the pulse step set with gtk_progress_bar_set_pulse_step()
1144  *
1145  * Return value: a fraction from 0.0 to 1.0
1146  **/
1147 gdouble
1148 gtk_progress_bar_get_pulse_step (GtkProgressBar *pbar)
1149 {
1150   g_return_val_if_fail (GTK_IS_PROGRESS_BAR (pbar), 0);
1151
1152   return pbar->pulse_fraction;
1153 }
1154
1155 /**
1156  * gtk_progress_bar_get_orientation:
1157  * @pbar: a #GtkProgressBar
1158  *
1159  * Retrieves the current progress bar orientation.
1160  *
1161  * Return value: orientation of the progress bar
1162  **/
1163 GtkProgressBarOrientation
1164 gtk_progress_bar_get_orientation (GtkProgressBar *pbar)
1165 {
1166   g_return_val_if_fail (GTK_IS_PROGRESS_BAR (pbar), 0);
1167
1168   return pbar->orientation;
1169 }
1170
1171 void
1172 gtk_progress_bar_set_bar_style (GtkProgressBar     *pbar,
1173                                 GtkProgressBarStyle bar_style)
1174 {
1175   g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
1176
1177   gtk_progress_bar_set_bar_style_internal (pbar, bar_style);
1178 }
1179
1180 void
1181 gtk_progress_bar_set_discrete_blocks (GtkProgressBar *pbar,
1182                                       guint           blocks)
1183 {
1184   g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
1185   g_return_if_fail (blocks > 1);
1186
1187   gtk_progress_bar_set_discrete_blocks_internal (pbar, blocks);
1188 }
1189
1190 void
1191 gtk_progress_bar_set_activity_step (GtkProgressBar *pbar,
1192                                     guint           step)
1193 {
1194   g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
1195
1196   gtk_progress_bar_set_activity_step_internal (pbar, step);
1197 }
1198
1199 void
1200 gtk_progress_bar_set_activity_blocks (GtkProgressBar *pbar,
1201                                       guint           blocks)
1202 {
1203   g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
1204   g_return_if_fail (blocks > 1);
1205
1206   gtk_progress_bar_set_activity_blocks_internal (pbar, blocks);
1207 }
1208
1209 /**
1210  * gtk_progress_bar_set_ellipsize:
1211  * @pbar: a #GtkProgressBar
1212  * @mode: a #PangoEllipsizeMode
1213  *
1214  * Sets the mode used to ellipsize (add an ellipsis: "...") the text
1215  * if there is not enough space to render the entire string.
1216  *
1217  * Since: 2.6
1218  **/
1219 void
1220 gtk_progress_bar_set_ellipsize (GtkProgressBar     *pbar,
1221                                 PangoEllipsizeMode  mode)
1222 {
1223   g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
1224   g_return_if_fail (mode >= PANGO_ELLIPSIZE_NONE &&
1225                     mode <= PANGO_ELLIPSIZE_END);
1226
1227   if ((PangoEllipsizeMode)pbar->ellipsize != mode)
1228     {
1229       pbar->ellipsize = mode;
1230
1231       g_object_notify (G_OBJECT (pbar), "ellipsize");
1232       gtk_widget_queue_resize (GTK_WIDGET (pbar));
1233     }
1234 }
1235
1236 /**
1237  * gtk_progress_bar_get_ellipsize:
1238  * @pbar: a #GtkProgressBar
1239  *
1240  * Returns the ellipsizing position of the progressbar.
1241  * See gtk_progress_bar_set_ellipsize().
1242  *
1243  * Return value: #PangoEllipsizeMode
1244  *
1245  * Since: 2.6
1246  **/
1247 PangoEllipsizeMode
1248 gtk_progress_bar_get_ellipsize (GtkProgressBar *pbar)
1249 {
1250   g_return_val_if_fail (GTK_IS_PROGRESS_BAR (pbar), PANGO_ELLIPSIZE_NONE);
1251
1252   return pbar->ellipsize;
1253 }
1254
1255 #define __GTK_PROGRESS_BAR_C__
1256 #include "gtkaliasdef.c"