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

   1 /* gtkcellrenderertext.c
   2  * Copyright (C) 2000  Red Hat, Inc.,  Jonathan Blandford <jrb@redhat.com>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library 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  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library 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 #include <stdlib.h>
  21 #include "gtkcellrenderertext.h"
  22 #include "gtkintl.h"
  23
  24 static void gtk_cell_renderer_text_init       (GtkCellRendererText      *celltext);
  25 static void gtk_cell_renderer_text_class_init (GtkCellRendererTextClass *class);
  26 static void gtk_cell_renderer_text_finalize   (GObject                  *object);
  27
  28 static void gtk_cell_renderer_text_get_property  (GObject                  *object,
  29                                                   guint                     param_id,
  30                                                   GValue                   *value,
  31                                                   GParamSpec               *pspec);
  32 static void gtk_cell_renderer_text_set_property  (GObject                  *object,
  33                                                   guint                     param_id,
  34                                                   const GValue             *value,
  35                                                   GParamSpec               *pspec);
  36 static void gtk_cell_renderer_text_get_size   (GtkCellRenderer          *cell,
  37                                                GtkWidget                *widget,
  38                                                GdkRectangle             *cell_area,
  39                                                gint                     *x_offset,
  40                                                gint                     *y_offset,
  41                                                gint                     *width,
  42                                                gint                     *height);
  43 static void gtk_cell_renderer_text_render     (GtkCellRenderer          *cell,
  44                                                GdkWindow                *window,
  45                                                GtkWidget                *widget,
  46                                                GdkRectangle             *background_area,
  47                                                GdkRectangle             *cell_area,
  48                                                GdkRectangle             *expose_area,
  49                                                guint                     flags);
  50
  51
  52
  53 enum {
  54   PROP_0,
  55
  56   PROP_TEXT,
  57   PROP_MARKUP,
  58
  59   /* Style args */
  60   PROP_BACKGROUND,
  61   PROP_FOREGROUND,
  62   PROP_BACKGROUND_GDK,
  63   PROP_FOREGROUND_GDK,
  64   PROP_FONT,
  65   PROP_FONT_DESC,
  66   PROP_FAMILY,
  67   PROP_STYLE,
  68   PROP_VARIANT,
  69   PROP_WEIGHT,
  70   PROP_STRETCH,
  71   PROP_SIZE,
  72   PROP_SIZE_POINTS,
  73   PROP_EDITABLE,
  74   PROP_STRIKETHROUGH,
  75   PROP_UNDERLINE,
  76   PROP_RISE,
  77
  78   /* Whether-a-style-arg-is-set args */
  79   PROP_BACKGROUND_SET,
  80   PROP_FOREGROUND_SET,
  81   PROP_FAMILY_SET,
  82   PROP_STYLE_SET,
  83   PROP_VARIANT_SET,
  84   PROP_WEIGHT_SET,
  85   PROP_STRETCH_SET,
  86   PROP_SIZE_SET,
  87   PROP_EDITABLE_SET,
  88   PROP_STRIKETHROUGH_SET,
  89   PROP_UNDERLINE_SET,
  90   PROP_RISE_SET
  91 };
  92
  93 static gpointer parent_class;
  94
  95 GtkType
  96 gtk_cell_renderer_text_get_type (void)
  97 {
  98   static GtkType cell_text_type = 0;
  99
 100   if (!cell_text_type)
 101     {
 102       static const GTypeInfo cell_text_info =
 103       {
 104         sizeof (GtkCellRendererTextClass),
 105         NULL,           /* base_init */
 106         NULL,           /* base_finalize */
 107         (GClassInitFunc) gtk_cell_renderer_text_class_init,
 108         NULL,           /* class_finalize */
 109         NULL,           /* class_data */
 110         sizeof (GtkCellRendererText),
 111         0,              /* n_preallocs */
 112         (GInstanceInitFunc) gtk_cell_renderer_text_init,
 113       };
 114
 115       cell_text_type = g_type_register_static (GTK_TYPE_CELL_RENDERER, "GtkCellRendererText", &cell_text_info, 0);
 116     }
 117
 118   return cell_text_type;
 119 }
 120
 121 static void
 122 gtk_cell_renderer_text_init (GtkCellRendererText *celltext)
 123 {
 124   GTK_CELL_RENDERER (celltext)->xalign = 0.0;
 125   GTK_CELL_RENDERER (celltext)->yalign = 0.5;
 126   GTK_CELL_RENDERER (celltext)->xpad = 2;
 127   GTK_CELL_RENDERER (celltext)->ypad = 2;
 128 }
 129
 130 static void
 131 gtk_cell_renderer_text_class_init (GtkCellRendererTextClass *class)
 132 {
 133   GObjectClass *object_class = G_OBJECT_CLASS (class);
 134   GtkCellRendererClass *cell_class = GTK_CELL_RENDERER_CLASS (class);
 135
 136   parent_class = g_type_class_peek_parent (class);
 137
 138   object_class->finalize = gtk_cell_renderer_text_finalize;
 139
 140   object_class->get_property = gtk_cell_renderer_text_get_property;
 141   object_class->set_property = gtk_cell_renderer_text_set_property;
 142
 143   cell_class->get_size = gtk_cell_renderer_text_get_size;
 144   cell_class->render = gtk_cell_renderer_text_render;
 145
 146   g_object_class_install_property (object_class,
 147                                    PROP_TEXT,
 148                                    g_param_spec_string ("text",
 149                                                         _("Text"),
 150                                                         _("Text to render"),
 151                                                         NULL,
 152                                                         G_PARAM_READWRITE));
 153
 154   g_object_class_install_property (object_class,
 155                                    PROP_MARKUP,
 156                                    g_param_spec_string ("markup",
 157                                                         _("Markup"),
 158                                                         _("Marked up text to render"),
 159                                                         NULL,
 160                                                         G_PARAM_WRITABLE));
 161
 162   g_object_class_install_property (object_class,
 163                                    PROP_BACKGROUND,
 164                                    g_param_spec_string ("background",
 165                                                         _("Background color name"),
 166                                                         _("Background color as a string"),
 167                                                         NULL,
 168                                                         G_PARAM_WRITABLE));
 169
 170   g_object_class_install_property (object_class,
 171                                    PROP_BACKGROUND_GDK,
 172                                    g_param_spec_boxed ("background_gdk",
 173                                                        _("Background color"),
 174                                                        _("Background color as a GdkColor"),
 175                                                        GDK_TYPE_COLOR,
 176                                                        G_PARAM_READABLE | G_PARAM_WRITABLE));
 177
 178   g_object_class_install_property (object_class,
 179                                    PROP_FOREGROUND,
 180                                    g_param_spec_string ("foreground",
 181                                                         _("Foreground color name"),
 182                                                         _("Foreground color as a string"),
 183                                                         NULL,
 184                                                         G_PARAM_WRITABLE));
 185
 186   g_object_class_install_property (object_class,
 187                                    PROP_FOREGROUND_GDK,
 188                                    g_param_spec_boxed ("foreground_gdk",
 189                                                        _("Foreground color"),
 190                                                        _("Foreground color as a GdkColor"),
 191                                                        GDK_TYPE_COLOR,
 192                                                        G_PARAM_READABLE | G_PARAM_WRITABLE));
 193
 194
 195   g_object_class_install_property (object_class,
 196                                    PROP_EDITABLE,
 197                                    g_param_spec_boolean ("editable",
 198                                                          _("Editable"),
 199                                                          _("Whether the text can be modified by the user"),
 200                                                          TRUE,
 201                                                          G_PARAM_READABLE | G_PARAM_WRITABLE));
 202
 203   g_object_class_install_property (object_class,
 204                                    PROP_FONT,
 205                                    g_param_spec_string ("font",
 206                                                         _("Font"),
 207                                                         _("Font description as a string"),
 208                                                         NULL,
 209                                                         G_PARAM_READABLE | G_PARAM_WRITABLE));
 210
 211   g_object_class_install_property (object_class,
 212                                    PROP_FONT_DESC,
 213                                    g_param_spec_boxed ("font_desc",
 214                                                        _("Font"),
 215                                                        _("Font description as a PangoFontDescription struct"),
 216                                                        GTK_TYPE_PANGO_FONT_DESCRIPTION,
 217                                                        G_PARAM_READABLE | G_PARAM_WRITABLE));
 218
 219
 220   g_object_class_install_property (object_class,
 221                                    PROP_FAMILY,
 222                                    g_param_spec_string ("family",
 223                                                         _("Font family"),
 224                                                         _("Name of the font family, e.g. Sans, Helvetica, Times, Monospace"),
 225                                                         NULL,
 226                                                         G_PARAM_READABLE | G_PARAM_WRITABLE));
 227
 228   g_object_class_install_property (object_class,
 229                                    PROP_STYLE,
 230                                    g_param_spec_enum ("style",
 231                                                       _("Font style"),
 232                                                       _("Font style"),
 233                                                       PANGO_TYPE_STYLE,
 234                                                       PANGO_STYLE_NORMAL,
 235                                                       G_PARAM_READABLE | G_PARAM_WRITABLE));
 236
 237   g_object_class_install_property (object_class,
 238                                    PROP_VARIANT,
 239                                    g_param_spec_enum ("variant",
 240                                                      _("Font variant"),
 241                                                      _("Font variant"),
 242                                                       PANGO_TYPE_VARIANT,
 243                                                       PANGO_VARIANT_NORMAL,
 244                                                       G_PARAM_READABLE | G_PARAM_WRITABLE));
 245
 246   g_object_class_install_property (object_class,
 247                                    PROP_WEIGHT,
 248                                    g_param_spec_int ("weight",
 249                                                      _("Font weight"),
 250                                                      _("Font weight"),
 251                                                      0,
 252                                                      G_MAXINT,
 253                                                      PANGO_WEIGHT_NORMAL,
 254                                                      G_PARAM_READABLE | G_PARAM_WRITABLE));
 255
 256
 257   g_object_class_install_property (object_class,
 258                                    PROP_STRETCH,
 259                                    g_param_spec_enum ("stretch",
 260                                                       _("Font stretch"),
 261                                                       _("Font stretch"),
 262                                                       PANGO_TYPE_STRETCH,
 263                                                       PANGO_STRETCH_NORMAL,
 264                                                       G_PARAM_READABLE | G_PARAM_WRITABLE));
 265
 266   g_object_class_install_property (object_class,
 267                                    PROP_SIZE,
 268                                    g_param_spec_int ("size",
 269                                                      _("Font size"),
 270                                                      _("Font size"),
 271                                                      0,
 272                                                      G_MAXINT,
 273                                                      0,
 274                                                      G_PARAM_READABLE | G_PARAM_WRITABLE));
 275
 276   g_object_class_install_property (object_class,
 277                                    PROP_SIZE_POINTS,
 278                                    g_param_spec_double ("size_points",
 279                                                         _("Font points"),
 280                                                         _("Font size in points"),
 281                                                         0.0,
 282                                                         G_MAXDOUBLE,
 283                                                         0.0,
 284                                                         G_PARAM_READABLE | G_PARAM_WRITABLE));
 285
 286   g_object_class_install_property (object_class,
 287                                    PROP_RISE,
 288                                    g_param_spec_int ("rise",
 289                                                      _("Rise"),
 290                                                      _("Offset of text above the baseline (below the baseline if rise is negative)"),
 291                                                      -G_MAXINT,
 292                                                      G_MAXINT,
 293                                                      0,
 294                                                      G_PARAM_READABLE | G_PARAM_WRITABLE));
 295
 296
 297   g_object_class_install_property (object_class,
 298                                    PROP_STRIKETHROUGH,
 299                                    g_param_spec_boolean ("strikethrough",
 300                                                          _("Strikethrough"),
 301                                                          _("Whether to strike through the text"),
 302                                                          FALSE,
 303                                                          G_PARAM_READABLE | G_PARAM_WRITABLE));
 304
 305   g_object_class_install_property (object_class,
 306                                    PROP_UNDERLINE,
 307                                    g_param_spec_enum ("underline",
 308                                                       _("Underline"),
 309                                                       _("Style of underline for this text"),
 310                                                       PANGO_TYPE_UNDERLINE,
 311                                                       PANGO_UNDERLINE_NONE,
 312                                                       G_PARAM_READABLE | G_PARAM_WRITABLE));
 313
 314   /* Style props are set or not */
 315
 316 #define ADD_SET_PROP(propname, propval, nick, blurb) g_object_class_install_property (object_class, propval, g_param_spec_boolean (propname, nick, blurb, FALSE, G_PARAM_READABLE | G_PARAM_WRITABLE))
 317
 318   ADD_SET_PROP ("background_set", PROP_BACKGROUND_SET,
 319                 _("Background set"),
 320                 _("Whether this tag affects the background color"));
 321
 322   ADD_SET_PROP ("foreground_set", PROP_FOREGROUND_SET,
 323                 _("Foreground set"),
 324                 _("Whether this tag affects the foreground color"));
 325
 326   ADD_SET_PROP ("editable_set", PROP_EDITABLE_SET,
 327                 _("Editability set"),
 328                 _("Whether this tag affects text editability"));
 329
 330   ADD_SET_PROP ("family_set", PROP_FAMILY_SET,
 331                 _("Font family set"),
 332                 _("Whether this tag affects the font family"));
 333
 334   ADD_SET_PROP ("style_set", PROP_STYLE_SET,
 335                 _("Font style set"),
 336                 _("Whether this tag affects the font style"));
 337
 338   ADD_SET_PROP ("variant_set", PROP_VARIANT_SET,
 339                 _("Font variant set"),
 340                 _("Whether this tag affects the font variant"));
 341
 342   ADD_SET_PROP ("weight_set", PROP_WEIGHT_SET,
 343                 _("Font weight set"),
 344                 _("Whether this tag affects the font weight"));
 345
 346   ADD_SET_PROP ("stretch_set", PROP_STRETCH_SET,
 347                 _("Font stretch set"),
 348                 _("Whether this tag affects the font stretch"));
 349
 350   ADD_SET_PROP ("size_set", PROP_SIZE_SET,
 351                 _("Font size set"),
 352                 _("Whether this tag affects the font size"));
 353
 354   ADD_SET_PROP ("rise_set", PROP_RISE_SET,
 355                 _("Rise set"),
 356                 _("Whether this tag affects the rise"));
 357
 358   ADD_SET_PROP ("strikethrough_set", PROP_STRIKETHROUGH_SET,
 359                 _("Strikethrough set"),
 360                 _("Whether this tag affects strikethrough"));
 361
 362   ADD_SET_PROP ("underline_set", PROP_UNDERLINE_SET,
 363                 _("Underline set"),
 364                 _("Whether this tag affects underlining"));
 365 }
 366
 367 static void
 368 gtk_cell_renderer_text_finalize (GObject *object)
 369 {
 370   GtkCellRendererText *celltext = GTK_CELL_RENDERER_TEXT (object);
 371
 372   if (celltext->font.family_name)
 373     g_free (celltext->font.family_name);
 374
 375   if (celltext->text)
 376     g_free (celltext->text);
 377
 378   if (celltext->extra_attrs)
 379     pango_attr_list_unref (celltext->extra_attrs);
 380
 381   (* G_OBJECT_CLASS (parent_class)->finalize) (object);
 382 }
 383
 384 static void
 385 gtk_cell_renderer_text_get_property (GObject        *object,
 386                                      guint           param_id,
 387                                      GValue         *value,
 388                                      GParamSpec     *pspec)
 389 {
 390   GtkCellRendererText *celltext = GTK_CELL_RENDERER_TEXT (object);
 391
 392   switch (param_id)
 393     {
 394     case PROP_TEXT:
 395       g_value_set_string (value, celltext->text);
 396       break;
 397
 398     case PROP_BACKGROUND_GDK:
 399       {
 400         GdkColor color;
 401
 402         color.red = celltext->background.red;
 403         color.green = celltext->background.green;
 404         color.blue = celltext->background.blue;
 405
 406         g_value_set_boxed (value, &color);
 407       }
 408       break;
 409
 410     case PROP_FOREGROUND_GDK:
 411       {
 412         GdkColor color;
 413
 414         color.red = celltext->foreground.red;
 415         color.green = celltext->foreground.green;
 416         color.blue = celltext->foreground.blue;
 417
 418         g_value_set_boxed (value, &color);
 419       }
 420       break;
 421
 422     case PROP_FONT:
 423       {
 424         /* FIXME GValue imposes a totally gratuitous string copy
 425          * here, we could just hand off string ownership
 426          */
 427         gchar *str = pango_font_description_to_string (&celltext->font);
 428         g_value_set_string (value, str);
 429         g_free (str);
 430       }
 431       break;
 432
 433     case PROP_FONT_DESC:
 434       g_value_set_boxed (value, &celltext->font);
 435       break;
 436
 437     case PROP_FAMILY:
 438       g_value_set_string (value, celltext->font.family_name);
 439       break;
 440
 441     case PROP_STYLE:
 442       g_value_set_enum (value, celltext->font.style);
 443       break;
 444
 445     case PROP_VARIANT:
 446       g_value_set_enum (value, celltext->font.variant);
 447       break;
 448
 449     case PROP_WEIGHT:
 450       g_value_set_int (value, celltext->font.weight);
 451       break;
 452
 453     case PROP_STRETCH:
 454       g_value_set_enum (value, celltext->font.stretch);
 455       break;
 456
 457     case PROP_SIZE:
 458       g_value_set_int (value, celltext->font.size);
 459       break;
 460
 461     case PROP_SIZE_POINTS:
 462       g_value_set_double (value, ((double)celltext->font.size) / (double)PANGO_SCALE);
 463       break;
 464
 465     case PROP_EDITABLE:
 466       g_value_set_boolean (value, celltext->editable);
 467       break;
 468
 469     case PROP_STRIKETHROUGH:
 470       g_value_set_boolean (value, celltext->strikethrough);
 471       break;
 472
 473     case PROP_UNDERLINE:
 474       g_value_set_enum (value, celltext->underline_style);
 475       break;
 476
 477     case PROP_RISE:
 478       g_value_set_int (value, celltext->rise);
 479       break;
 480
 481     case PROP_BACKGROUND_SET:
 482       g_value_set_boolean (value, celltext->background_set);
 483       break;
 484
 485     case PROP_FOREGROUND_SET:
 486       g_value_set_boolean (value, celltext->foreground_set);
 487       break;
 488
 489     case PROP_FAMILY_SET:
 490       g_value_set_boolean (value, celltext->family_set);
 491       break;
 492
 493     case PROP_STYLE_SET:
 494       g_value_set_boolean (value, celltext->style_set);
 495       break;
 496
 497     case PROP_VARIANT_SET:
 498       g_value_set_boolean (value, celltext->variant_set);
 499       break;
 500
 501     case PROP_WEIGHT_SET:
 502       g_value_set_boolean (value, celltext->weight_set);
 503       break;
 504
 505     case PROP_STRETCH_SET:
 506       g_value_set_boolean (value, celltext->stretch_set);
 507       break;
 508
 509     case PROP_SIZE_SET:
 510       g_value_set_boolean (value, celltext->size_set);
 511       break;
 512
 513     case PROP_EDITABLE_SET:
 514       g_value_set_boolean (value, celltext->editable_set);
 515       break;
 516
 517     case PROP_STRIKETHROUGH_SET:
 518       g_value_set_boolean (value, celltext->strikethrough_set);
 519       break;
 520
 521     case PROP_UNDERLINE_SET:
 522       g_value_set_boolean (value, celltext->underline_set);
 523       break;
 524
 525     case  PROP_RISE_SET:
 526       g_value_set_boolean (value, celltext->rise_set);
 527       break;
 528
 529     case PROP_BACKGROUND:
 530     case PROP_FOREGROUND:
 531     case PROP_MARKUP:
 532     default:
 533       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 534       break;
 535     }
 536 }
 537
 538
 539 static void
 540 set_bg_color (GtkCellRendererText *celltext,
 541               GdkColor            *color)
 542 {
 543   if (color)
 544     {
 545       if (!celltext->background_set)
 546         {
 547           celltext->background_set = TRUE;
 548           g_object_notify (G_OBJECT (celltext), "background_set");
 549         }
 550
 551       celltext->background.red = color->red;
 552       celltext->background.green = color->green;
 553       celltext->background.blue = color->blue;
 554     }
 555   else
 556     {
 557       if (celltext->background_set)
 558         {
 559           celltext->background_set = FALSE;
 560           g_object_notify (G_OBJECT (celltext), "background_set");
 561         }
 562     }
 563 }
 564
 565
 566 static void
 567 set_fg_color (GtkCellRendererText *celltext,
 568               GdkColor            *color)
 569 {
 570   if (color)
 571     {
 572       if (!celltext->foreground_set)
 573         {
 574           celltext->foreground_set = TRUE;
 575           g_object_notify (G_OBJECT (celltext), "foreground_set");
 576         }
 577
 578       celltext->foreground.red = color->red;
 579       celltext->foreground.green = color->green;
 580       celltext->foreground.blue = color->blue;
 581     }
 582   else
 583     {
 584       if (celltext->foreground_set)
 585         {
 586           celltext->foreground_set = FALSE;
 587           g_object_notify (G_OBJECT (celltext), "foreground_set");
 588         }
 589     }
 590 }
 591
 592 static void
 593 set_font_description (GtkCellRendererText  *celltext,
 594                       PangoFontDescription *font_desc)
 595 {
 596   if (font_desc != NULL)
 597     {
 598       /* pango_font_description_from_string() will sometimes return
 599        * a NULL family or -1 size, so handle those cases.
 600        */
 601
 602       if (font_desc->family_name)
 603         g_object_set (G_OBJECT (celltext),
 604                       "family", font_desc->family_name,
 605                       NULL);
 606
 607       if (font_desc->size >= 0)
 608         g_object_set (G_OBJECT (celltext),
 609                       "size", font_desc->size,
 610                       NULL);
 611
 612       g_object_set (G_OBJECT (celltext),
 613                     "style", font_desc->style,
 614                     "variant", font_desc->variant,
 615                     "weight", font_desc->weight,
 616                     "stretch", font_desc->stretch,
 617                     NULL);
 618     }
 619   else
 620     {
 621       if (celltext->family_set)
 622         {
 623           celltext->family_set = FALSE;
 624           g_object_notify (G_OBJECT (celltext), "family_set");
 625         }
 626       if (celltext->style_set)
 627         {
 628           celltext->style_set = FALSE;
 629           g_object_notify (G_OBJECT (celltext), "style_set");
 630         }
 631       if (celltext->variant_set)
 632         {
 633           celltext->variant_set = FALSE;
 634           g_object_notify (G_OBJECT (celltext), "variant_set");
 635         }
 636       if (celltext->weight_set)
 637         {
 638           celltext->weight_set = FALSE;
 639           g_object_notify (G_OBJECT (celltext), "weight_set");
 640         }
 641       if (celltext->stretch_set)
 642         {
 643           celltext->stretch_set = FALSE;
 644           g_object_notify (G_OBJECT (celltext), "stretch_set");
 645         }
 646       if (celltext->size_set)
 647         {
 648           celltext->size_set = FALSE;
 649           g_object_notify (G_OBJECT (celltext), "size_set");
 650         }
 651     }
 652 }
 653
 654 static void
 655 gtk_cell_renderer_text_set_property (GObject      *object,
 656                                      guint         param_id,
 657                                      const GValue *value,
 658                                      GParamSpec   *pspec)
 659 {
 660   GtkCellRendererText *celltext = GTK_CELL_RENDERER_TEXT (object);
 661
 662   switch (param_id)
 663     {
 664     case PROP_TEXT:
 665       if (celltext->text)
 666         g_free (celltext->text);
 667       celltext->text = g_strdup (g_value_get_string (value));
 668       g_object_notify(G_OBJECT(object), "text");
 669       break;
 670
 671     case PROP_MARKUP:
 672       {
 673         const gchar *str;
 674         gchar *text = NULL;
 675         GError *error = NULL;
 676         PangoAttrList *attrs = NULL;
 677
 678         if (celltext->text)
 679           g_free (celltext->text);
 680
 681         if (celltext->extra_attrs)
 682           pango_attr_list_unref (celltext->extra_attrs);
 683
 684         str = g_value_get_string (value);
 685         if (str && !pango_parse_markup (str,
 686                                         -1,
 687                                         0,
 688                                         &attrs,
 689                                         &text,
 690                                         NULL,
 691                                         &error))
 692           {
 693             g_warning ("Failed to set cell text from markup due to error parsing markup: %s",
 694                        error->message);
 695             g_error_free (error);
 696             return;
 697           }
 698
 699         celltext->text = text;
 700         celltext->extra_attrs = attrs;
 701       }
 702       break;
 703
 704     case PROP_BACKGROUND:
 705       {
 706         GdkColor color;
 707
 708         if (!g_value_get_string (value))
 709           set_bg_color (celltext, NULL);       /* reset to backgrounmd_set to FALSE */
 710         else if (gdk_color_parse (g_value_get_string (value), &color))
 711           set_bg_color (celltext, &color);
 712         else
 713           g_warning ("Don't know color `%s'", g_value_get_string (value));
 714
 715         g_object_notify (G_OBJECT (celltext), "background_gdk");
 716       }
 717       break;
 718
 719     case PROP_FOREGROUND:
 720       {
 721         GdkColor color;
 722
 723         if (!g_value_get_string (value))
 724           set_fg_color (celltext, NULL);       /* reset to foreground_set to FALSE */
 725         else if (gdk_color_parse (g_value_get_string (value), &color))
 726           set_fg_color (celltext, &color);
 727         else
 728           g_warning ("Don't know color `%s'", g_value_get_string (value));
 729
 730         g_object_notify (G_OBJECT (celltext), "foreground_gdk");
 731       }
 732       break;
 733
 734     case PROP_BACKGROUND_GDK:
 735       /* This notifies the GObject itself. */
 736       set_bg_color (celltext, g_value_get_boxed (value));
 737       break;
 738
 739     case PROP_FOREGROUND_GDK:
 740       /* This notifies the GObject itself. */
 741       set_fg_color (celltext, g_value_get_boxed (value));
 742       break;
 743
 744     case PROP_FONT:
 745       {
 746         PangoFontDescription *font_desc = NULL;
 747         const gchar *name;
 748
 749         name = g_value_get_string (value);
 750
 751         if (name)
 752           font_desc = pango_font_description_from_string (name);
 753
 754         /* This function notifies the relevant GObjects itself.
 755          * I'm not sure how useful the notify() on 'font'
 756          * actually is here, but it's here for consistency.
 757          */
 758         set_font_description (celltext, font_desc);
 759         g_object_notify(G_OBJECT(object), "font_desc");
 760         g_object_notify(G_OBJECT(object), "font");
 761
 762         if (font_desc)
 763           pango_font_description_free (font_desc);
 764       }
 765       break;
 766
 767     case PROP_FONT_DESC:
 768       set_font_description (celltext, g_value_get_boxed (value));
 769       break;
 770
 771     case PROP_FAMILY:
 772       if (celltext->font.family_name)
 773         g_free (celltext->font.family_name);
 774       celltext->font.family_name = g_strdup (g_value_get_string (value));
 775
 776       celltext->family_set = TRUE;
 777       g_object_notify (G_OBJECT (celltext), "family_set");
 778       g_object_notify (G_OBJECT (celltext), "font_desc");
 779       g_object_notify (G_OBJECT (celltext), "font");
 780       break;
 781
 782     case PROP_STYLE:
 783       celltext->font.style = g_value_get_enum (value);
 784
 785       celltext->style_set = TRUE;
 786       g_object_notify (G_OBJECT (celltext), "style_set");
 787       g_object_notify (G_OBJECT (celltext), "font_desc");
 788       g_object_notify (G_OBJECT (celltext), "font");
 789       break;
 790
 791     case PROP_VARIANT:
 792       celltext->font.variant = g_value_get_enum (value);
 793
 794       celltext->variant_set = TRUE;
 795       g_object_notify (G_OBJECT (celltext), "variant_set");
 796       g_object_notify (G_OBJECT (celltext), "font_desc");
 797       g_object_notify (G_OBJECT (celltext), "font");
 798       break;
 799
 800     case PROP_WEIGHT:
 801       celltext->font.weight = g_value_get_int (value);
 802
 803       celltext->weight_set = TRUE;
 804       g_object_notify (G_OBJECT (celltext), "weight_set");
 805       g_object_notify (G_OBJECT (celltext), "font_desc");
 806       g_object_notify (G_OBJECT (celltext), "font");
 807       break;
 808
 809     case PROP_STRETCH:
 810       celltext->font.stretch = g_value_get_enum (value);
 811
 812       celltext->stretch_set = TRUE;
 813       g_object_notify (G_OBJECT (celltext), "stretch_set");
 814       g_object_notify (G_OBJECT (celltext), "font_desc");
 815       g_object_notify (G_OBJECT (celltext), "font");
 816       break;
 817
 818     case PROP_SIZE:
 819       celltext->font.size = g_value_get_int (value);
 820
 821       celltext->size_set = TRUE;
 822       g_object_notify (G_OBJECT (celltext), "size_set");
 823       g_object_notify (G_OBJECT (celltext), "font_desc");
 824       g_object_notify (G_OBJECT (celltext), "font");
 825       break;
 826
 827     case PROP_SIZE_POINTS:
 828       celltext->font.size = g_value_get_double (value) * PANGO_SCALE;
 829
 830       celltext->size_set = TRUE;
 831       g_object_notify (G_OBJECT (celltext), "size_set");
 832       g_object_notify (G_OBJECT (celltext), "font_desc");
 833       g_object_notify (G_OBJECT (celltext), "font");
 834       break;
 835
 836     case PROP_EDITABLE:
 837       celltext->editable = g_value_get_boolean (value);
 838       celltext->editable_set = TRUE;
 839       g_object_notify (G_OBJECT (celltext), "editable_set");
 840       break;
 841
 842     case PROP_STRIKETHROUGH:
 843       celltext->strikethrough = g_value_get_boolean (value);
 844       celltext->strikethrough_set = TRUE;
 845       g_object_notify (G_OBJECT (celltext), "strikethrough_set");
 846       break;
 847
 848     case PROP_UNDERLINE:
 849       celltext->underline_style = g_value_get_enum (value);
 850       celltext->underline_set = TRUE;
 851       g_object_notify (G_OBJECT (celltext), "underline_set");
 852       break;
 853
 854     case PROP_RISE:
 855       celltext->rise = g_value_get_int (value);
 856       celltext->rise_set = TRUE;
 857       g_object_notify (G_OBJECT (celltext), "rise_set");
 858       break;
 859
 860     case PROP_BACKGROUND_SET:
 861       celltext->background_set = g_value_get_boolean (value);
 862       g_object_notify(G_OBJECT(object), "background_set");
 863       break;
 864
 865     case PROP_FOREGROUND_SET:
 866       celltext->foreground_set = g_value_get_boolean (value);
 867       g_object_notify(G_OBJECT(object), "foreground_set");
 868       break;
 869
 870     case PROP_FAMILY_SET:
 871       celltext->family_set = g_value_get_boolean (value);
 872       g_object_notify(G_OBJECT(object), "family_set");
 873       break;
 874
 875     case PROP_STYLE_SET:
 876       celltext->style_set = g_value_get_boolean (value);
 877       g_object_notify(G_OBJECT(object), "style_set");
 878       break;
 879
 880     case PROP_VARIANT_SET:
 881       celltext->variant_set = g_value_get_boolean (value);
 882       g_object_notify(G_OBJECT(object), "variant_set");
 883       break;
 884
 885     case PROP_WEIGHT_SET:
 886       celltext->weight_set = g_value_get_boolean (value);
 887       g_object_notify(G_OBJECT(object), "weight_set");
 888       break;
 889
 890     case PROP_STRETCH_SET:
 891       celltext->stretch_set = g_value_get_boolean (value);
 892       g_object_notify(G_OBJECT(object), "stretch_set");
 893       break;
 894
 895     case PROP_SIZE_SET:
 896       celltext->size_set = g_value_get_boolean (value);
 897       g_object_notify(G_OBJECT(object), "size_set");
 898       break;
 899
 900     case PROP_EDITABLE_SET:
 901       celltext->editable_set = g_value_get_boolean (value);
 902       g_object_notify(G_OBJECT(object), "editable_set");
 903       break;
 904
 905     case PROP_STRIKETHROUGH_SET:
 906       celltext->strikethrough_set = g_value_get_boolean (value);
 907       g_object_notify(G_OBJECT(object), "strikethrough_set");
 908       break;
 909
 910     case PROP_UNDERLINE_SET:
 911       celltext->underline_set = g_value_get_boolean (value);
 912       g_object_notify(G_OBJECT(object), "underline_set");
 913       break;
 914
 915     case PROP_RISE_SET:
 916       celltext->rise_set = g_value_get_boolean (value);
 917       g_object_notify(G_OBJECT(object), "rise_set");
 918       break;
 919
 920     default:
 921       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 922       break;
 923     }
 924 }
 925
 926 /**
 927  * gtk_cell_renderer_text_new:
 928  *
 929  * Creates a new #GtkCellRendererText. Adjust how text is drawn using
 930  * object properties. Object properties can be
 931  * set globally (with g_object_set()). Also, with #GtkTreeViewColumn,
 932  * you can bind a property to a value in a #GtkTreeModel. For example,
 933  * you can bind the "text" property on the cell renderer to a string
 934  * value in the model, thus rendering a different string in each row
 935  * of the #GtkTreeView
 936  *
 937  * Return value: the new cell renderer
 938  **/
 939 GtkCellRenderer *
 940 gtk_cell_renderer_text_new (void)
 941 {
 942   return GTK_CELL_RENDERER (g_object_new (gtk_cell_renderer_text_get_type (), NULL));
 943 }
 944
 945 static void
 946 add_attr (PangoAttrList  *attr_list,
 947           PangoAttribute *attr)
 948 {
 949   attr->start_index = 0;
 950   attr->end_index = G_MAXINT;
 951
 952   pango_attr_list_insert (attr_list, attr);
 953 }
 954
 955 static PangoLayout*
 956 get_layout (GtkCellRendererText *celltext,
 957             GtkWidget           *widget,
 958             gboolean             will_render,
 959             GtkCellRendererState flags)
 960 {
 961   PangoAttrList *attr_list;
 962   PangoLayout *layout;
 963   PangoUnderline uline;
 964
 965   layout = gtk_widget_create_pango_layout (widget, celltext->text);
 966
 967   if (celltext->extra_attrs)
 968     attr_list = pango_attr_list_copy (celltext->extra_attrs);
 969   else
 970     attr_list = pango_attr_list_new ();
 971
 972   if (will_render)
 973     {
 974       /* Add options that affect appearance but not size */
 975
 976       /* note that background doesn't go here, since it affects
 977        * background_area not the PangoLayout area
 978        */
 979
 980       if (celltext->foreground_set)
 981         {
 982           PangoColor color;
 983
 984           color = celltext->foreground;
 985
 986           add_attr (attr_list,
 987                     pango_attr_foreground_new (color.red, color.green, color.blue));
 988         }
 989
 990       if (celltext->strikethrough_set)
 991         add_attr (attr_list,
 992                   pango_attr_strikethrough_new (celltext->strikethrough));
 993     }
 994
 995   if (celltext->family_set &&
 996       celltext->font.family_name)
 997     add_attr (attr_list, pango_attr_family_new (celltext->font.family_name));
 998
 999   if (celltext->style_set)
1000     add_attr (attr_list, pango_attr_style_new (celltext->font.style));
1001
1002   if (celltext->variant_set)
1003     add_attr (attr_list, pango_attr_variant_new (celltext->font.variant));
1004
1005   if (celltext->weight_set)
1006     add_attr (attr_list, pango_attr_weight_new (celltext->font.weight));
1007
1008   if (celltext->stretch_set)
1009     add_attr (attr_list, pango_attr_stretch_new (celltext->font.stretch));
1010
1011   if (celltext->size_set &&
1012       celltext->font.size >= 0)
1013     add_attr (attr_list, pango_attr_size_new (celltext->font.size));
1014
1015   if (celltext->underline_set)
1016     uline = celltext->underline_style;
1017   else
1018     uline = PANGO_UNDERLINE_NONE;
1019
1020   if ((flags & GTK_CELL_RENDERER_PRELIT) == GTK_CELL_RENDERER_PRELIT)
1021     {
1022       switch (uline)
1023         {
1024         case PANGO_UNDERLINE_NONE:
1025           uline = PANGO_UNDERLINE_SINGLE;
1026           break;
1027
1028         case PANGO_UNDERLINE_SINGLE:
1029           uline = PANGO_UNDERLINE_DOUBLE;
1030           break;
1031
1032         default:
1033           break;
1034         }
1035     }
1036
1037   if (uline != PANGO_UNDERLINE_NONE)
1038     add_attr (attr_list, pango_attr_underline_new (celltext->underline_style));
1039
1040   if (celltext->rise_set)
1041     add_attr (attr_list, pango_attr_rise_new (celltext->rise));
1042
1043   pango_layout_set_attributes (layout, attr_list);
1044   pango_layout_set_width (layout, -1);
1045
1046   pango_attr_list_unref (attr_list);
1047
1048   return layout;
1049 }
1050
1051 static void
1052 gtk_cell_renderer_text_get_size (GtkCellRenderer *cell,
1053                                  GtkWidget       *widget,
1054                                  GdkRectangle    *cell_area,
1055                                  gint            *x_offset,
1056                                  gint            *y_offset,
1057                                  gint            *width,
1058                                  gint            *height)
1059 {
1060   GtkCellRendererText *celltext = (GtkCellRendererText *)cell;
1061   PangoRectangle rect;
1062   PangoLayout *layout;
1063
1064   layout = get_layout (celltext, widget, FALSE, 0);
1065   pango_layout_get_pixel_extents (layout, NULL, &rect);
1066
1067   if (width)
1068     *width = GTK_CELL_RENDERER (celltext)->xpad * 2 + rect.width;
1069
1070   if (height)
1071     *height = GTK_CELL_RENDERER (celltext)->ypad * 2 + rect.height;
1072
1073   if (cell_area)
1074     {
1075       if (x_offset)
1076         {
1077           *x_offset = cell->xalign * (cell_area->width - rect.width - (2 * cell->xpad));
1078           *x_offset = MAX (*x_offset, 0) + cell->xpad;
1079         }
1080       if (y_offset)
1081         {
1082           *y_offset = cell->yalign * (cell_area->height - rect.height - (2 * cell->ypad));
1083           *y_offset = MAX (*y_offset, 0) + cell->ypad;
1084         }
1085     }
1086
1087   g_object_unref (G_OBJECT (layout));
1088 }
1089
1090 static void
1091 gtk_cell_renderer_text_render (GtkCellRenderer    *cell,
1092                                GdkWindow          *window,
1093                                GtkWidget          *widget,
1094                                GdkRectangle       *background_area,
1095                                GdkRectangle       *cell_area,
1096                                GdkRectangle       *expose_area,
1097                                guint               flags)
1098
1099 {
1100   GtkCellRendererText *celltext = (GtkCellRendererText *) cell;
1101   PangoLayout *layout;
1102   GtkStateType state;
1103   gint x_offset;
1104   gint y_offset;
1105
1106   layout = get_layout (celltext, widget, TRUE, flags);
1107
1108   gtk_cell_renderer_text_get_size (cell, widget, cell_area, &x_offset, &y_offset, NULL, NULL);
1109
1110   if ((flags & GTK_CELL_RENDERER_SELECTED) == GTK_CELL_RENDERER_SELECTED)
1111     state = GTK_STATE_SELECTED;
1112   else
1113     state = GTK_STATE_NORMAL;
1114
1115   if (celltext->background_set && state != GTK_STATE_SELECTED)
1116     {
1117       GdkColor color;
1118       GdkGC *gc;
1119
1120       color.red = celltext->background.red;
1121       color.green = celltext->background.green;
1122       color.blue = celltext->background.blue;
1123
1124       gc = gdk_gc_new (window);
1125
1126       gdk_gc_set_rgb_fg_color (gc, &color);
1127
1128       gdk_draw_rectangle (window,
1129                           gc,
1130                           TRUE,
1131                           background_area->x,
1132                           background_area->y,
1133                           background_area->width,
1134                           background_area->height);
1135
1136       g_object_unref (G_OBJECT (gc));
1137     }
1138
1139   gtk_paint_layout (widget->style,
1140                     window,
1141                     state,
1142                     cell_area,
1143                     widget,
1144                     "cellrenderertext",
1145                     cell_area->x + x_offset,
1146                     cell_area->y + y_offset,
1147                     layout);
1148
1149   g_object_unref (G_OBJECT (layout));
1150 }