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                                                       -G_MAXUINT,
 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       if (progress->show_text && pbar->bar_style != GTK_PROGRESS_DISCRETE)
 547         {
 548           requisition->width = MAX (MIN_HORIZONTAL_BAR_WIDTH, width);
 549           requisition->height = MAX (MIN_HORIZONTAL_BAR_HEIGHT, height);
 550         }
 551       else
 552         {
 553           requisition->width = MIN_HORIZONTAL_BAR_WIDTH;
 554           requisition->height = MIN_HORIZONTAL_BAR_HEIGHT;
 555         }
 556     }
 557   else
 558     {
 559       if (progress->show_text && pbar->bar_style != GTK_PROGRESS_DISCRETE)
 560         {
 561           requisition->width = MAX (MIN_VERTICAL_BAR_WIDTH, width);
 562           requisition->height = MAX (MIN_VERTICAL_BAR_HEIGHT, height);
 563         }
 564       else
 565         {
 566           requisition->width = MIN_VERTICAL_BAR_WIDTH;
 567           requisition->height = MIN_VERTICAL_BAR_HEIGHT;
 568         }
 569     }
 570 }
 571
 572 static void
 573 gtk_progress_bar_act_mode_enter (GtkProgress *progress)
 574 {
 575   GtkProgressBar *pbar;
 576   GtkWidget *widget;
 577   GtkProgressBarOrientation orientation;
 578
 579   pbar = GTK_PROGRESS_BAR (progress);
 580   widget = GTK_WIDGET (progress);
 581
 582   orientation = pbar->orientation;
 583   if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
 584     {
 585       if (pbar->orientation == GTK_PROGRESS_LEFT_TO_RIGHT)
 586         orientation = GTK_PROGRESS_RIGHT_TO_LEFT;
 587       else if (pbar->orientation == GTK_PROGRESS_RIGHT_TO_LEFT)
 588         orientation = GTK_PROGRESS_LEFT_TO_RIGHT;
 589     }
 590
 591   /* calculate start pos */
 592
 593   if (orientation == GTK_PROGRESS_LEFT_TO_RIGHT ||
 594       orientation == GTK_PROGRESS_RIGHT_TO_LEFT)
 595     {
 596       if (orientation == GTK_PROGRESS_LEFT_TO_RIGHT)
 597         {
 598           pbar->activity_pos = widget->style->xthickness;
 599           pbar->activity_dir = 0;
 600         }
 601       else
 602         {
 603           pbar->activity_pos = widget->allocation.width -
 604             widget->style->xthickness - (widget->allocation.height -
 605                 widget->style->ythickness * 2);
 606           pbar->activity_dir = 1;
 607         }
 608     }
 609   else
 610     {
 611       if (orientation == GTK_PROGRESS_TOP_TO_BOTTOM)
 612         {
 613           pbar->activity_pos = widget->style->ythickness;
 614           pbar->activity_dir = 0;
 615         }
 616       else
 617         {
 618           pbar->activity_pos = widget->allocation.height -
 619             widget->style->ythickness - (widget->allocation.width -
 620                 widget->style->xthickness * 2);
 621           pbar->activity_dir = 1;
 622         }
 623     }
 624 }
 625
 626 static void
 627 gtk_progress_bar_paint_activity (GtkProgressBar            *pbar,
 628                                  GtkProgressBarOrientation  orientation)
 629 {
 630   GtkWidget *widget = GTK_WIDGET (pbar);
 631   GtkProgress *progress = GTK_PROGRESS (pbar);
 632   gint x, y, w, h;
 633
 634   switch (orientation)
 635     {
 636     case GTK_PROGRESS_LEFT_TO_RIGHT:
 637     case GTK_PROGRESS_RIGHT_TO_LEFT:
 638       x = pbar->activity_pos;
 639       y = widget->style->ythickness;
 640       w = MAX (2, widget->allocation.width / pbar->activity_blocks);
 641       h = widget->allocation.height - 2 * widget->style->ythickness;
 642       break;
 643
 644     case GTK_PROGRESS_TOP_TO_BOTTOM:
 645     case GTK_PROGRESS_BOTTOM_TO_TOP:
 646       x = widget->style->xthickness;
 647       y = pbar->activity_pos;
 648       w = widget->allocation.width - 2 * widget->style->xthickness;
 649       h = MAX (2, widget->allocation.height / pbar->activity_blocks);
 650       break;
 651
 652     default:
 653       return;
 654       break;
 655     }
 656
 657   gtk_paint_box (widget->style,
 658                  progress->offscreen_pixmap,
 659                  GTK_STATE_PRELIGHT, GTK_SHADOW_OUT,
 660                  NULL, widget, "bar",
 661                  x, y, w, h);
 662 }
 663
 664 static void
 665 gtk_progress_bar_paint_continuous (GtkProgressBar            *pbar,
 666                                    gint                       amount,
 667                                    GtkProgressBarOrientation  orientation)
 668 {
 669   GtkWidget *widget = GTK_WIDGET (pbar);
 670   gint x, y, w, h;
 671
 672   if (amount <= 0)
 673     return;
 674
 675   switch (orientation)
 676     {
 677     case GTK_PROGRESS_LEFT_TO_RIGHT:
 678     case GTK_PROGRESS_RIGHT_TO_LEFT:
 679       w = amount;
 680       h = widget->allocation.height - widget->style->ythickness * 2;
 681       y = widget->style->ythickness;
 682
 683       x = widget->style->xthickness;
 684       if (orientation == GTK_PROGRESS_RIGHT_TO_LEFT)
 685         x = widget->allocation.width - amount - x;
 686       break;
 687
 688     case GTK_PROGRESS_TOP_TO_BOTTOM:
 689     case GTK_PROGRESS_BOTTOM_TO_TOP:
 690       w = widget->allocation.width - widget->style->xthickness * 2;
 691       h = amount;
 692       x = widget->style->xthickness;
 693
 694       y = widget->style->ythickness;
 695       if (orientation == GTK_PROGRESS_BOTTOM_TO_TOP)
 696         y = widget->allocation.height - amount - y;
 697       break;
 698
 699     default:
 700       return;
 701       break;
 702     }
 703
 704   gtk_paint_box (widget->style,
 705                  GTK_PROGRESS (pbar)->offscreen_pixmap,
 706                  GTK_STATE_PRELIGHT, GTK_SHADOW_OUT,
 707                  NULL, widget, "bar",
 708                  x, y, w, h);
 709 }
 710
 711 static void
 712 gtk_progress_bar_paint_discrete (GtkProgressBar            *pbar,
 713                                  GtkProgressBarOrientation  orientation)
 714 {
 715   GtkWidget *widget = GTK_WIDGET (pbar);
 716   gint i;
 717
 718   for (i = 0; i <= pbar->in_block; i++)
 719     {
 720       gint x, y, w, h, space;
 721
 722       switch (orientation)
 723         {
 724         case GTK_PROGRESS_LEFT_TO_RIGHT:
 725         case GTK_PROGRESS_RIGHT_TO_LEFT:
 726           space = widget->allocation.width - 2 * widget->style->xthickness;
 727
 728           x = widget->style->xthickness + (i * space) / pbar->blocks;
 729           y = widget->style->ythickness;
 730           w = widget->style->xthickness + ((i + 1) * space) / pbar->blocks - x;
 731           h = widget->allocation.height - 2 * widget->style->ythickness;
 732
 733           if (orientation == GTK_PROGRESS_RIGHT_TO_LEFT)
 734             x = widget->allocation.width - w - x;
 735           break;
 736
 737         case GTK_PROGRESS_TOP_TO_BOTTOM:
 738         case GTK_PROGRESS_BOTTOM_TO_TOP:
 739           space = widget->allocation.height - 2 * widget->style->ythickness;
 740
 741           x = widget->style->xthickness;
 742           y = widget->style->ythickness + (i * space) / pbar->blocks;
 743           w = widget->allocation.width - 2 * widget->style->xthickness;
 744           h = widget->style->ythickness + ((i + 1) * space) / pbar->blocks - y;
 745
 746           if (orientation == GTK_PROGRESS_BOTTOM_TO_TOP)
 747             y = widget->allocation.height - h - y;
 748           break;
 749
 750         default:
 751           return;
 752           break;
 753         }
 754
 755       gtk_paint_box (widget->style,
 756                      GTK_PROGRESS (pbar)->offscreen_pixmap,
 757                      GTK_STATE_PRELIGHT, GTK_SHADOW_OUT,
 758                      NULL, widget, "bar",
 759                      x, y, w, h);
 760     }
 761 }
 762
 763 static void
 764 gtk_progress_bar_paint_text (GtkProgressBar            *pbar,
 765                              gint                       amount,
 766                              GtkProgressBarOrientation  orientation)
 767 {
 768   GtkProgress *progress = GTK_PROGRESS (pbar);
 769   GtkWidget *widget = GTK_WIDGET (pbar);
 770
 771   gint x;
 772   gint y;
 773   gchar *buf;
 774   GdkRectangle rect;
 775   PangoLayout *layout;
 776   PangoRectangle logical_rect;
 777   GdkRectangle prelight_clip, normal_clip;
 778
 779   buf = gtk_progress_get_current_text (progress);
 780
 781   layout = gtk_widget_create_pango_layout (widget, buf);
 782   pango_layout_set_ellipsize (layout, pbar->ellipsize);
 783   if (pbar->ellipsize)
 784     pango_layout_set_width (layout, widget->allocation.width * PANGO_SCALE);
 785
 786   pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
 787
 788   x = widget->style->xthickness + 1 +
 789     (widget->allocation.width - 2 * widget->style->xthickness -
 790      2 - logical_rect.width)
 791     * progress->x_align;
 792
 793   y = widget->style->ythickness + 1 +
 794     (widget->allocation.height - 2 * widget->style->ythickness -
 795      2 - logical_rect.height)
 796     * progress->y_align;
 797
 798   rect.x = widget->style->xthickness;
 799   rect.y = widget->style->ythickness;
 800   rect.width = widget->allocation.width - 2 * widget->style->xthickness;
 801   rect.height = widget->allocation.height - 2 * widget->style->ythickness;
 802
 803   prelight_clip = normal_clip = rect;
 804
 805   switch (orientation)
 806     {
 807     case GTK_PROGRESS_LEFT_TO_RIGHT:
 808       prelight_clip.width = amount;
 809       normal_clip.x += amount;
 810       normal_clip.width -= amount;
 811       break;
 812
 813     case GTK_PROGRESS_RIGHT_TO_LEFT:
 814       normal_clip.width -= amount;
 815       prelight_clip.x += normal_clip.width;
 816       prelight_clip.width -= normal_clip.width;
 817       break;
 818
 819     case GTK_PROGRESS_TOP_TO_BOTTOM:
 820       prelight_clip.height = amount;
 821       normal_clip.y += amount;
 822       normal_clip.height -= amount;
 823       break;
 824
 825     case GTK_PROGRESS_BOTTOM_TO_TOP:
 826       normal_clip.height -= amount;
 827       prelight_clip.y += normal_clip.height;
 828       prelight_clip.height -= normal_clip.height;
 829       break;
 830     }
 831
 832   gtk_paint_layout (widget->style,
 833                     progress->offscreen_pixmap,
 834                     GTK_STATE_PRELIGHT,
 835                     FALSE,
 836                     &prelight_clip,
 837                     widget,
 838                     "progressbar",
 839                     x, y,
 840                     layout);
 841
 842   gtk_paint_layout (widget->style,
 843                     progress->offscreen_pixmap,
 844                     GTK_STATE_NORMAL,
 845                     FALSE,
 846                     &normal_clip,
 847                     widget,
 848                     "progressbar",
 849                     x, y,
 850                     layout);
 851
 852   g_object_unref (layout);
 853   g_free (buf);
 854 }
 855
 856 static void
 857 gtk_progress_bar_paint (GtkProgress *progress)
 858 {
 859   GtkProgressBar *pbar;
 860   GtkWidget *widget;
 861
 862   GtkProgressBarOrientation orientation;
 863
 864   g_return_if_fail (GTK_IS_PROGRESS_BAR (progress));
 865
 866   pbar = GTK_PROGRESS_BAR (progress);
 867   widget = GTK_WIDGET (progress);
 868
 869   orientation = pbar->orientation;
 870   if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
 871     {
 872       if (pbar->orientation == GTK_PROGRESS_LEFT_TO_RIGHT)
 873         orientation = GTK_PROGRESS_RIGHT_TO_LEFT;
 874       else if (pbar->orientation == GTK_PROGRESS_RIGHT_TO_LEFT)
 875         orientation = GTK_PROGRESS_LEFT_TO_RIGHT;
 876     }
 877
 878   if (progress->offscreen_pixmap)
 879     {
 880       gtk_paint_box (widget->style,
 881                      progress->offscreen_pixmap,
 882                      GTK_STATE_NORMAL, GTK_SHADOW_IN,
 883                      NULL, widget, "trough",
 884                      0, 0,
 885                      widget->allocation.width,
 886                      widget->allocation.height);
 887
 888       if (progress->activity_mode)
 889         {
 890           gtk_progress_bar_paint_activity (pbar, orientation);
 891         }
 892       else
 893         {
 894           gint amount;
 895           gint space;
 896
 897           if (orientation == GTK_PROGRESS_LEFT_TO_RIGHT ||
 898               orientation == GTK_PROGRESS_RIGHT_TO_LEFT)
 899             space = widget->allocation.width - 2 * widget->style->xthickness;
 900           else
 901             space = widget->allocation.height - 2 * widget->style->ythickness;
 902
 903           amount = space *
 904             gtk_progress_get_current_percentage (GTK_PROGRESS (pbar));
 905
 906           if (pbar->bar_style == GTK_PROGRESS_CONTINUOUS)
 907             {
 908               gtk_progress_bar_paint_continuous (pbar, amount, orientation);
 909
 910               if (GTK_PROGRESS (pbar)->show_text)
 911                 gtk_progress_bar_paint_text (pbar, amount, orientation);
 912             }
 913           else
 914             gtk_progress_bar_paint_discrete (pbar, orientation);
 915         }
 916     }
 917 }
 918
 919 static void
 920 gtk_progress_bar_set_bar_style_internal (GtkProgressBar     *pbar,
 921                                          GtkProgressBarStyle bar_style)
 922 {
 923   g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
 924
 925   if (pbar->bar_style != bar_style)
 926     {
 927       pbar->bar_style = bar_style;
 928
 929       if (GTK_WIDGET_DRAWABLE (GTK_WIDGET (pbar)))
 930         gtk_widget_queue_resize (GTK_WIDGET (pbar));
 931
 932       g_object_notify (G_OBJECT (pbar), "bar-style");
 933     }
 934 }
 935
 936 static void
 937 gtk_progress_bar_set_discrete_blocks_internal (GtkProgressBar *pbar,
 938                                                guint           blocks)
 939 {
 940   g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
 941   g_return_if_fail (blocks > 1);
 942
 943   if (pbar->blocks != blocks)
 944     {
 945       pbar->blocks = blocks;
 946
 947       if (GTK_WIDGET_DRAWABLE (GTK_WIDGET (pbar)))
 948         gtk_widget_queue_resize (GTK_WIDGET (pbar));
 949
 950       g_object_notify (G_OBJECT (pbar), "discrete-blocks");
 951     }
 952 }
 953
 954 static void
 955 gtk_progress_bar_set_activity_step_internal (GtkProgressBar *pbar,
 956                                              guint           step)
 957 {
 958   g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
 959
 960   if (pbar->activity_step != step)
 961     {
 962       pbar->activity_step = step;
 963       g_object_notify (G_OBJECT (pbar), "activity-step");
 964     }
 965 }
 966
 967 static void
 968 gtk_progress_bar_set_activity_blocks_internal (GtkProgressBar *pbar,
 969                                                guint           blocks)
 970 {
 971   g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
 972   g_return_if_fail (blocks > 1);
 973
 974   if (pbar->activity_blocks != blocks)
 975     {
 976       pbar->activity_blocks = blocks;
 977       g_object_notify (G_OBJECT (pbar), "activity-blocks");
 978     }
 979 }
 980
 981 /*******************************************************************/
 982
 983 /**
 984  * gtk_progress_bar_set_fraction:
 985  * @pbar: a #GtkProgressBar
 986  * @fraction: fraction of the task that's been completed
 987  *
 988  * Causes the progress bar to "fill in" the given fraction
 989  * of the bar. The fraction should be between 0.0 and 1.0,
 990  * inclusive.
 991  *
 992  **/
 993 void
 994 gtk_progress_bar_set_fraction (GtkProgressBar *pbar,
 995                                gdouble         fraction)
 996 {
 997   g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
 998
 999   /* If we know the percentage, we don't want activity mode. */
1000   gtk_progress_set_activity_mode (GTK_PROGRESS (pbar), FALSE);
1001
1002   /* We use the deprecated GtkProgress interface internally.
1003    * Once everything's been deprecated for a good long time,
1004    * we can clean up all this code.
1005    */
1006   gtk_progress_set_percentage (GTK_PROGRESS (pbar), fraction);
1007
1008   g_object_notify (G_OBJECT (pbar), "fraction");
1009 }
1010
1011 /**
1012  * gtk_progress_bar_pulse:
1013  * @pbar: a #GtkProgressBar
1014  *
1015  * Indicates that some progress is made, but you don't know how much.
1016  * Causes the progress bar to enter "activity mode," where a block
1017  * bounces back and forth. Each call to gtk_progress_bar_pulse()
1018  * causes the block to move by a little bit (the amount of movement
1019  * per pulse is determined by gtk_progress_bar_set_pulse_step()).
1020  **/
1021 void
1022 gtk_progress_bar_pulse (GtkProgressBar *pbar)
1023 {
1024   g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
1025
1026   /* If we don't know the percentage, we must want activity mode. */
1027   gtk_progress_set_activity_mode (GTK_PROGRESS (pbar), TRUE);
1028
1029   /* Sigh. */
1030   gtk_progress_bar_real_update (GTK_PROGRESS (pbar));
1031 }
1032
1033 /**
1034  * gtk_progress_bar_set_text:
1035  * @pbar: a #GtkProgressBar
1036  * @text: a UTF-8 string
1037  *
1038  * Causes the given @text to appear superimposed on the progress bar.
1039  **/
1040 void
1041 gtk_progress_bar_set_text (GtkProgressBar *pbar,
1042                            const gchar    *text)
1043 {
1044   g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
1045
1046   gtk_progress_set_show_text (GTK_PROGRESS (pbar), text && *text);
1047   gtk_progress_set_format_string (GTK_PROGRESS (pbar), text);
1048
1049   /* We don't support formats in this interface, but turn
1050    * them back on for NULL, which should put us back to
1051    * the initial state.
1052    */
1053   GTK_PROGRESS (pbar)->use_text_format = (text == NULL);
1054
1055   g_object_notify (G_OBJECT (pbar), "text");
1056 }
1057
1058 /**
1059  * gtk_progress_bar_set_pulse_step:
1060  * @pbar: a #GtkProgressBar
1061  * @fraction: fraction between 0.0 and 1.0
1062  *
1063  * Sets the fraction of total progress bar length to move the
1064  * bouncing block for each call to gtk_progress_bar_pulse().
1065  **/
1066 void
1067 gtk_progress_bar_set_pulse_step   (GtkProgressBar *pbar,
1068                                    gdouble         fraction)
1069 {
1070   g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
1071
1072   pbar->pulse_fraction = fraction;
1073
1074   g_object_notify (G_OBJECT (pbar), "pulse-step");
1075 }
1076
1077 void
1078 gtk_progress_bar_update (GtkProgressBar *pbar,
1079                          gdouble         percentage)
1080 {
1081   g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
1082
1083   /* Use of gtk_progress_bar_update() is deprecated !
1084    * Use gtk_progress_bar_set_percentage ()
1085    */
1086
1087   gtk_progress_set_percentage (GTK_PROGRESS (pbar), percentage);
1088 }
1089
1090 /**
1091  * gtk_progress_bar_set_orientation:
1092  * @pbar: a #GtkProgressBar
1093  * @orientation: orientation of the progress bar
1094  *
1095  * Causes the progress bar to switch to a different orientation
1096  * (left-to-right, right-to-left, top-to-bottom, or bottom-to-top).
1097  **/
1098 void
1099 gtk_progress_bar_set_orientation (GtkProgressBar           *pbar,
1100                                   GtkProgressBarOrientation orientation)
1101 {
1102   g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
1103
1104   if (pbar->orientation != orientation)
1105     {
1106       pbar->orientation = orientation;
1107
1108       if (GTK_WIDGET_DRAWABLE (GTK_WIDGET (pbar)))
1109         gtk_widget_queue_resize (GTK_WIDGET (pbar));
1110
1111       g_object_notify (G_OBJECT (pbar), "orientation");
1112     }
1113 }
1114
1115 /**
1116  * gtk_progress_bar_get_text:
1117  * @pbar: a #GtkProgressBar
1118  *
1119  * Retrieves the text displayed superimposed on the progress bar,
1120  * if any, otherwise %NULL. The return value is a reference
1121  * to the text, not a copy of it, so will become invalid
1122  * if you change the text in the progress bar.
1123  *
1124  * Return value: text, or %NULL; this string is owned by the widget
1125  * and should not be modified or freed.
1126  **/
1127 G_CONST_RETURN gchar*
1128 gtk_progress_bar_get_text (GtkProgressBar *pbar)
1129 {
1130   g_return_val_if_fail (GTK_IS_PROGRESS_BAR (pbar), NULL);
1131
1132   if (GTK_PROGRESS (pbar)->use_text_format)
1133     return NULL;
1134   else
1135     return GTK_PROGRESS (pbar)->format;
1136 }
1137
1138 /**
1139  * gtk_progress_bar_get_fraction:
1140  * @pbar: a #GtkProgressBar
1141  *
1142  * Returns the current fraction of the task that's been completed.
1143  *
1144  * Return value: a fraction from 0.0 to 1.0
1145  **/
1146 gdouble
1147 gtk_progress_bar_get_fraction (GtkProgressBar *pbar)
1148 {
1149   g_return_val_if_fail (GTK_IS_PROGRESS_BAR (pbar), 0);
1150
1151   return gtk_progress_get_current_percentage (GTK_PROGRESS (pbar));
1152 }
1153
1154 /**
1155  * gtk_progress_bar_get_pulse_step:
1156  * @pbar: a #GtkProgressBar
1157  *
1158  * Retrieves the pulse step set with gtk_progress_bar_set_pulse_step()
1159  *
1160  * Return value: a fraction from 0.0 to 1.0
1161  **/
1162 gdouble
1163 gtk_progress_bar_get_pulse_step (GtkProgressBar *pbar)
1164 {
1165   g_return_val_if_fail (GTK_IS_PROGRESS_BAR (pbar), 0);
1166
1167   return pbar->pulse_fraction;
1168 }
1169
1170 /**
1171  * gtk_progress_bar_get_orientation:
1172  * @pbar: a #GtkProgressBar
1173  *
1174  * Retrieves the current progress bar orientation.
1175  *
1176  * Return value: orientation of the progress bar
1177  **/
1178 GtkProgressBarOrientation
1179 gtk_progress_bar_get_orientation (GtkProgressBar *pbar)
1180 {
1181   g_return_val_if_fail (GTK_IS_PROGRESS_BAR (pbar), 0);
1182
1183   return pbar->orientation;
1184 }
1185
1186 void
1187 gtk_progress_bar_set_bar_style (GtkProgressBar     *pbar,
1188                                 GtkProgressBarStyle bar_style)
1189 {
1190   g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
1191
1192   gtk_progress_bar_set_bar_style_internal (pbar, bar_style);
1193 }
1194
1195 void
1196 gtk_progress_bar_set_discrete_blocks (GtkProgressBar *pbar,
1197                                       guint           blocks)
1198 {
1199   g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
1200   g_return_if_fail (blocks > 1);
1201
1202   gtk_progress_bar_set_discrete_blocks_internal (pbar, blocks);
1203 }
1204
1205 void
1206 gtk_progress_bar_set_activity_step (GtkProgressBar *pbar,
1207                                     guint           step)
1208 {
1209   g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
1210
1211   gtk_progress_bar_set_activity_step_internal (pbar, step);
1212 }
1213
1214 void
1215 gtk_progress_bar_set_activity_blocks (GtkProgressBar *pbar,
1216                                       guint           blocks)
1217 {
1218   g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
1219   g_return_if_fail (blocks > 1);
1220
1221   gtk_progress_bar_set_activity_blocks_internal (pbar, blocks);
1222 }
1223
1224 /**
1225  * gtk_progress_bar_set_ellipsize:
1226  * @pbar: a #GtkProgressBar
1227  * @mode: a #PangoEllipsizeMode
1228  *
1229  * Sets the mode used to ellipsize (add an ellipsis: "...") the text
1230  * if there is not enough space to render the entire string.
1231  *
1232  * Since: 2.6
1233  **/
1234 void
1235 gtk_progress_bar_set_ellipsize (GtkProgressBar     *pbar,
1236                                 PangoEllipsizeMode  mode)
1237 {
1238   g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
1239   g_return_if_fail (mode >= PANGO_ELLIPSIZE_NONE &&
1240                     mode <= PANGO_ELLIPSIZE_END);
1241
1242   if ((PangoEllipsizeMode)pbar->ellipsize != mode)
1243     {
1244       pbar->ellipsize = mode;
1245
1246       g_object_notify (G_OBJECT (pbar), "ellipsize");
1247       gtk_widget_queue_resize (GTK_WIDGET (pbar));
1248     }
1249 }
1250
1251 /**
1252  * gtk_progress_bar_get_ellipsize:
1253  * @pbar: a #GtkProgressBar
1254  *
1255  * Returns the ellipsizing position of the progressbar.
1256  * See gtk_progress_bar_set_ellipsize().
1257  *
1258  * Return value: #PangoEllipsizeMode
1259  *
1260  * Since: 2.6
1261  **/
1262 PangoEllipsizeMode
1263 gtk_progress_bar_get_ellipsize (GtkProgressBar *pbar)
1264 {
1265   g_return_val_if_fail (GTK_IS_PROGRESS_BAR (pbar), PANGO_ELLIPSIZE_NONE);
1266
1267   return pbar->ellipsize;
1268 }
1269
1270 #define __GTK_PROGRESS_BAR_C__
1271 #include "gtkaliasdef.c"