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 "gtkeditable.h"
  23 #include "gtkentry.h"
  24 #include "gtkmarshalers.h"
  25 #include "gtkintl.h"
  26 #include "gtktreeprivate.h"
  27
  28 static void gtk_cell_renderer_text_init       (GtkCellRendererText      *celltext);
  29 static void gtk_cell_renderer_text_class_init (GtkCellRendererTextClass *class);
  30 static void gtk_cell_renderer_text_finalize   (GObject                  *object);
  31
  32 static void gtk_cell_renderer_text_get_property  (GObject                  *object,
  33                                                   guint                     param_id,
  34                                                   GValue                   *value,
  35                                                   GParamSpec               *pspec);
  36 static void gtk_cell_renderer_text_set_property  (GObject                  *object,
  37                                                   guint                     param_id,
  38                                                   const GValue             *value,
  39                                                   GParamSpec               *pspec);
  40 static void gtk_cell_renderer_text_get_size   (GtkCellRenderer          *cell,
  41                                                GtkWidget                *widget,
  42                                                GdkRectangle             *cell_area,
  43                                                gint                     *x_offset,
  44                                                gint                     *y_offset,
  45                                                gint                     *width,
  46                                                gint                     *height);
  47 static void gtk_cell_renderer_text_render     (GtkCellRenderer          *cell,
  48                                                GdkWindow                *window,
  49                                                GtkWidget                *widget,
  50                                                GdkRectangle             *background_area,
  51                                                GdkRectangle             *cell_area,
  52                                                GdkRectangle             *expose_area,
  53                                                GtkCellRendererState      flags);
  54
  55 static GtkCellEditable *gtk_cell_renderer_text_start_editing (GtkCellRenderer      *cell,
  56                                                               GdkEvent             *event,
  57                                                               GtkWidget            *widget,
  58                                                               const gchar          *path,
  59                                                               GdkRectangle         *background_area,
  60                                                               GdkRectangle         *cell_area,
  61                                                               GtkCellRendererState  flags);
  62
  63 enum {
  64   EDITED,
  65   LAST_SIGNAL
  66 };
  67
  68 enum {
  69   PROP_0,
  70
  71   PROP_TEXT,
  72   PROP_MARKUP,
  73   PROP_ATTRIBUTES,
  74   PROP_SINGLE_PARAGRAPH_MODE,
  75
  76   /* Style args */
  77   PROP_BACKGROUND,
  78   PROP_FOREGROUND,
  79   PROP_BACKGROUND_GDK,
  80   PROP_FOREGROUND_GDK,
  81   PROP_FONT,
  82   PROP_FONT_DESC,
  83   PROP_FAMILY,
  84   PROP_STYLE,
  85   PROP_VARIANT,
  86   PROP_WEIGHT,
  87   PROP_STRETCH,
  88   PROP_SIZE,
  89   PROP_SIZE_POINTS,
  90   PROP_SCALE,
  91   PROP_EDITABLE,
  92   PROP_STRIKETHROUGH,
  93   PROP_UNDERLINE,
  94   PROP_RISE,
  95   PROP_LANGUAGE,
  96
  97   /* Whether-a-style-arg-is-set args */
  98   PROP_BACKGROUND_SET,
  99   PROP_FOREGROUND_SET,
 100   PROP_FAMILY_SET,
 101   PROP_STYLE_SET,
 102   PROP_VARIANT_SET,
 103   PROP_WEIGHT_SET,
 104   PROP_STRETCH_SET,
 105   PROP_SIZE_SET,
 106   PROP_SCALE_SET,
 107   PROP_EDITABLE_SET,
 108   PROP_STRIKETHROUGH_SET,
 109   PROP_UNDERLINE_SET,
 110   PROP_RISE_SET,
 111   PROP_LANGUAGE_SET
 112 };
 113
 114 static gpointer parent_class;
 115 static guint text_cell_renderer_signals [LAST_SIGNAL];
 116
 117 #define GTK_CELL_RENDERER_TEXT_PATH "gtk-cell-renderer-text-path"
 118
 119 #define GTK_CELL_RENDERER_TEXT_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GTK_TYPE_CELL_RENDERER_TEXT, GtkCellRendererTextPrivate))
 120
 121 typedef struct _GtkCellRendererTextPrivate GtkCellRendererTextPrivate;
 122 struct _GtkCellRendererTextPrivate
 123 {
 124   guint single_paragraph : 1;
 125   guint language_set : 1;
 126   guint markup_set : 1;
 127
 128   gulong focus_out_id;
 129   PangoLanguage *language;
 130 };
 131
 132
 133 GType
 134 gtk_cell_renderer_text_get_type (void)
 135 {
 136   static GType cell_text_type = 0;
 137
 138   if (!cell_text_type)
 139     {
 140       static const GTypeInfo cell_text_info =
 141       {
 142         sizeof (GtkCellRendererTextClass),
 143         NULL,           /* base_init */
 144         NULL,           /* base_finalize */
 145         (GClassInitFunc) gtk_cell_renderer_text_class_init,
 146         NULL,           /* class_finalize */
 147         NULL,           /* class_data */
 148         sizeof (GtkCellRendererText),
 149         0,              /* n_preallocs */
 150         (GInstanceInitFunc) gtk_cell_renderer_text_init,
 151       };
 152
 153       cell_text_type =
 154         g_type_register_static (GTK_TYPE_CELL_RENDERER, "GtkCellRendererText",
 155                                 &cell_text_info, 0);
 156     }
 157
 158   return cell_text_type;
 159 }
 160
 161 static void
 162 gtk_cell_renderer_text_init (GtkCellRendererText *celltext)
 163 {
 164   GTK_CELL_RENDERER (celltext)->xalign = 0.0;
 165   GTK_CELL_RENDERER (celltext)->yalign = 0.5;
 166   GTK_CELL_RENDERER (celltext)->xpad = 2;
 167   GTK_CELL_RENDERER (celltext)->ypad = 2;
 168   celltext->fixed_height_rows = -1;
 169   celltext->font = pango_font_description_new ();
 170 }
 171
 172 static void
 173 gtk_cell_renderer_text_class_init (GtkCellRendererTextClass *class)
 174 {
 175   GObjectClass *object_class = G_OBJECT_CLASS (class);
 176   GtkCellRendererClass *cell_class = GTK_CELL_RENDERER_CLASS (class);
 177
 178   parent_class = g_type_class_peek_parent (class);
 179
 180   object_class->finalize = gtk_cell_renderer_text_finalize;
 181
 182   object_class->get_property = gtk_cell_renderer_text_get_property;
 183   object_class->set_property = gtk_cell_renderer_text_set_property;
 184
 185   cell_class->get_size = gtk_cell_renderer_text_get_size;
 186   cell_class->render = gtk_cell_renderer_text_render;
 187   cell_class->start_editing = gtk_cell_renderer_text_start_editing;
 188
 189   g_object_class_install_property (object_class,
 190                                    PROP_TEXT,
 191                                    g_param_spec_string ("text",
 192                                                         _("Text"),
 193                                                         _("Text to render"),
 194                                                         NULL,
 195                                                         G_PARAM_READWRITE));
 196
 197   g_object_class_install_property (object_class,
 198                                    PROP_MARKUP,
 199                                    g_param_spec_string ("markup",
 200                                                         _("Markup"),
 201                                                         _("Marked up text to render"),
 202                                                         NULL,
 203                                                         G_PARAM_WRITABLE));
 204
 205   g_object_class_install_property (object_class,
 206                                    PROP_ATTRIBUTES,
 207                                    g_param_spec_boxed ("attributes",
 208                                                        _("Attributes"),
 209                                                        _("A list of style attributes to apply to the text of the renderer"),
 210                                                        PANGO_TYPE_ATTR_LIST,
 211                                                        G_PARAM_READWRITE));
 212
 213   g_object_class_install_property (object_class,
 214                                    PROP_SINGLE_PARAGRAPH_MODE,
 215                                    g_param_spec_boolean ("single_paragraph_mode",
 216                                                          _("Single Paragraph Mode"),
 217                                                          _("Whether or not to keep all text in a single paragraph"),
 218                                                          FALSE,
 219                                                          G_PARAM_READWRITE));
 220
 221
 222   g_object_class_install_property (object_class,
 223                                    PROP_BACKGROUND,
 224                                    g_param_spec_string ("background",
 225                                                         _("Background color name"),
 226                                                         _("Background color as a string"),
 227                                                         NULL,
 228                                                         G_PARAM_WRITABLE));
 229
 230   g_object_class_install_property (object_class,
 231                                    PROP_BACKGROUND_GDK,
 232                                    g_param_spec_boxed ("background_gdk",
 233                                                        _("Background color"),
 234                                                        _("Background color as a GdkColor"),
 235                                                        GDK_TYPE_COLOR,
 236                                                        G_PARAM_READABLE | G_PARAM_WRITABLE));
 237
 238   g_object_class_install_property (object_class,
 239                                    PROP_FOREGROUND,
 240                                    g_param_spec_string ("foreground",
 241                                                         _("Foreground color name"),
 242                                                         _("Foreground color as a string"),
 243                                                         NULL,
 244                                                         G_PARAM_WRITABLE));
 245
 246   g_object_class_install_property (object_class,
 247                                    PROP_FOREGROUND_GDK,
 248                                    g_param_spec_boxed ("foreground_gdk",
 249                                                        _("Foreground color"),
 250                                                        _("Foreground color as a GdkColor"),
 251                                                        GDK_TYPE_COLOR,
 252                                                        G_PARAM_READABLE | G_PARAM_WRITABLE));
 253
 254
 255   g_object_class_install_property (object_class,
 256                                    PROP_EDITABLE,
 257                                    g_param_spec_boolean ("editable",
 258                                                          _("Editable"),
 259                                                          _("Whether the text can be modified by the user"),
 260                                                          FALSE,
 261                                                          G_PARAM_READABLE | G_PARAM_WRITABLE));
 262
 263   g_object_class_install_property (object_class,
 264                                    PROP_FONT,
 265                                    g_param_spec_string ("font",
 266                                                         _("Font"),
 267                                                         _("Font description as a string"),
 268                                                         NULL,
 269                                                         G_PARAM_READABLE | G_PARAM_WRITABLE));
 270
 271   g_object_class_install_property (object_class,
 272                                    PROP_FONT_DESC,
 273                                    g_param_spec_boxed ("font_desc",
 274                                                        _("Font"),
 275                                                        _("Font description as a PangoFontDescription struct"),
 276                                                        PANGO_TYPE_FONT_DESCRIPTION,
 277                                                        G_PARAM_READABLE | G_PARAM_WRITABLE));
 278
 279
 280   g_object_class_install_property (object_class,
 281                                    PROP_FAMILY,
 282                                    g_param_spec_string ("family",
 283                                                         _("Font family"),
 284                                                         _("Name of the font family, e.g. Sans, Helvetica, Times, Monospace"),
 285                                                         NULL,
 286                                                         G_PARAM_READABLE | G_PARAM_WRITABLE));
 287
 288   g_object_class_install_property (object_class,
 289                                    PROP_STYLE,
 290                                    g_param_spec_enum ("style",
 291                                                       _("Font style"),
 292                                                       _("Font style"),
 293                                                       PANGO_TYPE_STYLE,
 294                                                       PANGO_STYLE_NORMAL,
 295                                                       G_PARAM_READABLE | G_PARAM_WRITABLE));
 296
 297   g_object_class_install_property (object_class,
 298                                    PROP_VARIANT,
 299                                    g_param_spec_enum ("variant",
 300                                                      _("Font variant"),
 301                                                      _("Font variant"),
 302                                                       PANGO_TYPE_VARIANT,
 303                                                       PANGO_VARIANT_NORMAL,
 304                                                       G_PARAM_READABLE | G_PARAM_WRITABLE));
 305
 306   g_object_class_install_property (object_class,
 307                                    PROP_WEIGHT,
 308                                    g_param_spec_int ("weight",
 309                                                      _("Font weight"),
 310                                                      _("Font weight"),
 311                                                      0,
 312                                                      G_MAXINT,
 313                                                      PANGO_WEIGHT_NORMAL,
 314                                                      G_PARAM_READABLE | G_PARAM_WRITABLE));
 315
 316    g_object_class_install_property (object_class,
 317                                    PROP_STRETCH,
 318                                    g_param_spec_enum ("stretch",
 319                                                       _("Font stretch"),
 320                                                       _("Font stretch"),
 321                                                       PANGO_TYPE_STRETCH,
 322                                                       PANGO_STRETCH_NORMAL,
 323                                                       G_PARAM_READABLE | G_PARAM_WRITABLE));
 324
 325   g_object_class_install_property (object_class,
 326                                    PROP_SIZE,
 327                                    g_param_spec_int ("size",
 328                                                      _("Font size"),
 329                                                      _("Font size"),
 330                                                      0,
 331                                                      G_MAXINT,
 332                                                      0,
 333                                                      G_PARAM_READABLE | G_PARAM_WRITABLE));
 334
 335   g_object_class_install_property (object_class,
 336                                    PROP_SIZE_POINTS,
 337                                    g_param_spec_double ("size_points",
 338                                                         _("Font points"),
 339                                                         _("Font size in points"),
 340                                                         0.0,
 341                                                         G_MAXDOUBLE,
 342                                                         0.0,
 343                                                         G_PARAM_READABLE | G_PARAM_WRITABLE));
 344
 345   g_object_class_install_property (object_class,
 346                                    PROP_SCALE,
 347                                    g_param_spec_double ("scale",
 348                                                         _("Font scale"),
 349                                                         _("Font scaling factor"),
 350                                                         0.0,
 351                                                         G_MAXDOUBLE,
 352                                                         1.0,
 353                                                         G_PARAM_READABLE | G_PARAM_WRITABLE));
 354
 355   g_object_class_install_property (object_class,
 356                                    PROP_RISE,
 357                                    g_param_spec_int ("rise",
 358                                                      _("Rise"),
 359                                                      _("Offset of text above the baseline (below the baseline if rise is negative)"),
 360                                                      -G_MAXINT,
 361                                                      G_MAXINT,
 362                                                      0,
 363                                                      G_PARAM_READABLE | G_PARAM_WRITABLE));
 364
 365
 366   g_object_class_install_property (object_class,
 367                                    PROP_STRIKETHROUGH,
 368                                    g_param_spec_boolean ("strikethrough",
 369                                                          _("Strikethrough"),
 370                                                          _("Whether to strike through the text"),
 371                                                          FALSE,
 372                                                          G_PARAM_READABLE | G_PARAM_WRITABLE));
 373
 374   g_object_class_install_property (object_class,
 375                                    PROP_UNDERLINE,
 376                                    g_param_spec_enum ("underline",
 377                                                       _("Underline"),
 378                                                       _("Style of underline for this text"),
 379                                                       PANGO_TYPE_UNDERLINE,
 380                                                       PANGO_UNDERLINE_NONE,
 381                                                       G_PARAM_READABLE | G_PARAM_WRITABLE));
 382
 383   g_object_class_install_property (object_class,
 384                                    PROP_LANGUAGE,
 385                                    g_param_spec_string ("language",
 386                                                         _("Language"),
 387                                                         _("The language this text is in, as an ISO code. Pango can use this as a hint when rendering the text. If you don't understand this parameter, you probably don't need it"),
 388                                                         NULL,
 389                                                         G_PARAM_READWRITE));
 390
 391
 392   /* Style props are set or not */
 393
 394 #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))
 395
 396   ADD_SET_PROP ("background_set", PROP_BACKGROUND_SET,
 397                 _("Background set"),
 398                 _("Whether this tag affects the background color"));
 399
 400   ADD_SET_PROP ("foreground_set", PROP_FOREGROUND_SET,
 401                 _("Foreground set"),
 402                 _("Whether this tag affects the foreground color"));
 403
 404   ADD_SET_PROP ("editable_set", PROP_EDITABLE_SET,
 405                 _("Editability set"),
 406                 _("Whether this tag affects text editability"));
 407
 408   ADD_SET_PROP ("family_set", PROP_FAMILY_SET,
 409                 _("Font family set"),
 410                 _("Whether this tag affects the font family"));
 411
 412   ADD_SET_PROP ("style_set", PROP_STYLE_SET,
 413                 _("Font style set"),
 414                 _("Whether this tag affects the font style"));
 415
 416   ADD_SET_PROP ("variant_set", PROP_VARIANT_SET,
 417                 _("Font variant set"),
 418                 _("Whether this tag affects the font variant"));
 419
 420   ADD_SET_PROP ("weight_set", PROP_WEIGHT_SET,
 421                 _("Font weight set"),
 422                 _("Whether this tag affects the font weight"));
 423
 424   ADD_SET_PROP ("stretch_set", PROP_STRETCH_SET,
 425                 _("Font stretch set"),
 426                 _("Whether this tag affects the font stretch"));
 427
 428   ADD_SET_PROP ("size_set", PROP_SIZE_SET,
 429                 _("Font size set"),
 430                 _("Whether this tag affects the font size"));
 431
 432   ADD_SET_PROP ("scale_set", PROP_SCALE_SET,
 433                 _("Font scale set"),
 434                 _("Whether this tag scales the font size by a factor"));
 435
 436   ADD_SET_PROP ("rise_set", PROP_RISE_SET,
 437                 _("Rise set"),
 438                 _("Whether this tag affects the rise"));
 439
 440   ADD_SET_PROP ("strikethrough_set", PROP_STRIKETHROUGH_SET,
 441                 _("Strikethrough set"),
 442                 _("Whether this tag affects strikethrough"));
 443
 444   ADD_SET_PROP ("underline_set", PROP_UNDERLINE_SET,
 445                 _("Underline set"),
 446                 _("Whether this tag affects underlining"));
 447
 448   ADD_SET_PROP ("language_set", PROP_LANGUAGE_SET,
 449                 _("Language set"),
 450                 _("Whether this tag affects the language the text is rendered as"));
 451
 452   text_cell_renderer_signals [EDITED] =
 453     g_signal_new ("edited",
 454                   G_OBJECT_CLASS_TYPE (object_class),
 455                   G_SIGNAL_RUN_LAST,
 456                   G_STRUCT_OFFSET (GtkCellRendererTextClass, edited),
 457                   NULL, NULL,
 458                   _gtk_marshal_VOID__STRING_STRING,
 459                   G_TYPE_NONE, 2,
 460                   G_TYPE_STRING,
 461                   G_TYPE_STRING);
 462
 463   g_type_class_add_private (object_class, sizeof (GtkCellRendererTextPrivate));
 464 }
 465
 466 static void
 467 gtk_cell_renderer_text_finalize (GObject *object)
 468 {
 469   GtkCellRendererText *celltext = GTK_CELL_RENDERER_TEXT (object);
 470   GtkCellRendererTextPrivate *priv;
 471
 472   priv = GTK_CELL_RENDERER_TEXT_GET_PRIVATE (object);
 473
 474   pango_font_description_free (celltext->font);
 475
 476   if (celltext->text)
 477     g_free (celltext->text);
 478
 479   if (celltext->extra_attrs)
 480     pango_attr_list_unref (celltext->extra_attrs);
 481
 482   if (priv->language)
 483     g_object_unref (priv->language);
 484
 485   (* G_OBJECT_CLASS (parent_class)->finalize) (object);
 486 }
 487
 488 static PangoFontMask
 489 get_property_font_set_mask (guint prop_id)
 490 {
 491   switch (prop_id)
 492     {
 493     case PROP_FAMILY_SET:
 494       return PANGO_FONT_MASK_FAMILY;
 495     case PROP_STYLE_SET:
 496       return PANGO_FONT_MASK_STYLE;
 497     case PROP_VARIANT_SET:
 498       return PANGO_FONT_MASK_VARIANT;
 499     case PROP_WEIGHT_SET:
 500       return PANGO_FONT_MASK_WEIGHT;
 501     case PROP_STRETCH_SET:
 502       return PANGO_FONT_MASK_STRETCH;
 503     case PROP_SIZE_SET:
 504       return PANGO_FONT_MASK_SIZE;
 505     }
 506
 507   return 0;
 508 }
 509
 510 static void
 511 gtk_cell_renderer_text_get_property (GObject        *object,
 512                                      guint           param_id,
 513                                      GValue         *value,
 514                                      GParamSpec     *pspec)
 515 {
 516   GtkCellRendererText *celltext = GTK_CELL_RENDERER_TEXT (object);
 517   GtkCellRendererTextPrivate *priv;
 518
 519   priv = GTK_CELL_RENDERER_TEXT_GET_PRIVATE (object);
 520
 521   switch (param_id)
 522     {
 523     case PROP_TEXT:
 524       g_value_set_string (value, celltext->text);
 525       break;
 526
 527     case PROP_ATTRIBUTES:
 528       g_value_set_boxed (value, celltext->extra_attrs);
 529       break;
 530
 531     case PROP_SINGLE_PARAGRAPH_MODE:
 532       g_value_set_boolean (value, priv->single_paragraph);
 533       break;
 534
 535     case PROP_BACKGROUND_GDK:
 536       {
 537         GdkColor color;
 538
 539         color.red = celltext->background.red;
 540         color.green = celltext->background.green;
 541         color.blue = celltext->background.blue;
 542
 543         g_value_set_boxed (value, &color);
 544       }
 545       break;
 546
 547     case PROP_FOREGROUND_GDK:
 548       {
 549         GdkColor color;
 550
 551         color.red = celltext->foreground.red;
 552         color.green = celltext->foreground.green;
 553         color.blue = celltext->foreground.blue;
 554
 555         g_value_set_boxed (value, &color);
 556       }
 557       break;
 558
 559     case PROP_FONT:
 560       {
 561         /* FIXME GValue imposes a totally gratuitous string copy
 562          * here, we could just hand off string ownership
 563          */
 564         gchar *str = pango_font_description_to_string (celltext->font);
 565         g_value_set_string (value, str);
 566         g_free (str);
 567       }
 568       break;
 569
 570     case PROP_FONT_DESC:
 571       g_value_set_boxed (value, celltext->font);
 572       break;
 573
 574     case PROP_FAMILY:
 575       g_value_set_string (value, pango_font_description_get_family (celltext->font));
 576       break;
 577
 578     case PROP_STYLE:
 579       g_value_set_enum (value, pango_font_description_get_style (celltext->font));
 580       break;
 581
 582     case PROP_VARIANT:
 583       g_value_set_enum (value, pango_font_description_get_variant (celltext->font));
 584       break;
 585
 586     case PROP_WEIGHT:
 587       g_value_set_int (value, pango_font_description_get_weight (celltext->font));
 588       break;
 589
 590     case PROP_STRETCH:
 591       g_value_set_enum (value, pango_font_description_get_stretch (celltext->font));
 592       break;
 593
 594     case PROP_SIZE:
 595       g_value_set_int (value, pango_font_description_get_size (celltext->font));
 596       break;
 597
 598     case PROP_SIZE_POINTS:
 599       g_value_set_double (value, ((double)pango_font_description_get_size (celltext->font)) / (double)PANGO_SCALE);
 600       break;
 601
 602     case PROP_SCALE:
 603       g_value_set_double (value, celltext->font_scale);
 604       break;
 605
 606     case PROP_EDITABLE:
 607       g_value_set_boolean (value, celltext->editable);
 608       break;
 609
 610     case PROP_STRIKETHROUGH:
 611       g_value_set_boolean (value, celltext->strikethrough);
 612       break;
 613
 614     case PROP_UNDERLINE:
 615       g_value_set_enum (value, celltext->underline_style);
 616       break;
 617
 618     case PROP_RISE:
 619       g_value_set_int (value, celltext->rise);
 620       break;
 621
 622     case PROP_LANGUAGE:
 623       g_value_set_string (value, pango_language_to_string (priv->language));
 624       break;
 625
 626     case PROP_BACKGROUND_SET:
 627       g_value_set_boolean (value, celltext->background_set);
 628       break;
 629
 630     case PROP_FOREGROUND_SET:
 631       g_value_set_boolean (value, celltext->foreground_set);
 632       break;
 633
 634     case PROP_FAMILY_SET:
 635     case PROP_STYLE_SET:
 636     case PROP_VARIANT_SET:
 637     case PROP_WEIGHT_SET:
 638     case PROP_STRETCH_SET:
 639     case PROP_SIZE_SET:
 640       {
 641         PangoFontMask mask = get_property_font_set_mask (param_id);
 642         g_value_set_boolean (value, (pango_font_description_get_set_fields (celltext->font) & mask) != 0);
 643
 644         break;
 645       }
 646
 647     case PROP_SCALE_SET:
 648       g_value_set_boolean (value, celltext->scale_set);
 649       break;
 650
 651     case PROP_EDITABLE_SET:
 652       g_value_set_boolean (value, celltext->editable_set);
 653       break;
 654
 655     case PROP_STRIKETHROUGH_SET:
 656       g_value_set_boolean (value, celltext->strikethrough_set);
 657       break;
 658
 659     case PROP_UNDERLINE_SET:
 660       g_value_set_boolean (value, celltext->underline_set);
 661       break;
 662
 663     case  PROP_RISE_SET:
 664       g_value_set_boolean (value, celltext->rise_set);
 665       break;
 666
 667     case PROP_LANGUAGE_SET:
 668       g_value_set_boolean (value, priv->language_set);
 669       break;
 670
 671     case PROP_BACKGROUND:
 672     case PROP_FOREGROUND:
 673     case PROP_MARKUP:
 674     default:
 675       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 676       break;
 677     }
 678 }
 679
 680
 681 static void
 682 set_bg_color (GtkCellRendererText *celltext,
 683               GdkColor            *color)
 684 {
 685   if (color)
 686     {
 687       if (!celltext->background_set)
 688         {
 689           celltext->background_set = TRUE;
 690           g_object_notify (G_OBJECT (celltext), "background_set");
 691         }
 692
 693       celltext->background.red = color->red;
 694       celltext->background.green = color->green;
 695       celltext->background.blue = color->blue;
 696     }
 697   else
 698     {
 699       if (celltext->background_set)
 700         {
 701           celltext->background_set = FALSE;
 702           g_object_notify (G_OBJECT (celltext), "background_set");
 703         }
 704     }
 705 }
 706
 707
 708 static void
 709 set_fg_color (GtkCellRendererText *celltext,
 710               GdkColor            *color)
 711 {
 712   if (color)
 713     {
 714       if (!celltext->foreground_set)
 715         {
 716           celltext->foreground_set = TRUE;
 717           g_object_notify (G_OBJECT (celltext), "foreground_set");
 718         }
 719
 720       celltext->foreground.red = color->red;
 721       celltext->foreground.green = color->green;
 722       celltext->foreground.blue = color->blue;
 723     }
 724   else
 725     {
 726       if (celltext->foreground_set)
 727         {
 728           celltext->foreground_set = FALSE;
 729           g_object_notify (G_OBJECT (celltext), "foreground_set");
 730         }
 731     }
 732 }
 733
 734 static PangoFontMask
 735 set_font_desc_fields (PangoFontDescription *desc,
 736                       PangoFontMask         to_set)
 737 {
 738   PangoFontMask changed_mask = 0;
 739
 740   if (to_set & PANGO_FONT_MASK_FAMILY)
 741     {
 742       const char *family = pango_font_description_get_family (desc);
 743       if (!family)
 744         {
 745           family = "sans";
 746           changed_mask |= PANGO_FONT_MASK_FAMILY;
 747         }
 748
 749       pango_font_description_set_family (desc, family);
 750     }
 751   if (to_set & PANGO_FONT_MASK_STYLE)
 752     pango_font_description_set_style (desc, pango_font_description_get_style (desc));
 753   if (to_set & PANGO_FONT_MASK_VARIANT)
 754     pango_font_description_set_variant (desc, pango_font_description_get_variant (desc));
 755   if (to_set & PANGO_FONT_MASK_WEIGHT)
 756     pango_font_description_set_weight (desc, pango_font_description_get_weight (desc));
 757   if (to_set & PANGO_FONT_MASK_STRETCH)
 758     pango_font_description_set_stretch (desc, pango_font_description_get_stretch (desc));
 759   if (to_set & PANGO_FONT_MASK_SIZE)
 760     {
 761       gint size = pango_font_description_get_size (desc);
 762       if (size <= 0)
 763         {
 764           size = 10 * PANGO_SCALE;
 765           changed_mask |= PANGO_FONT_MASK_SIZE;
 766         }
 767
 768       pango_font_description_set_size (desc, size);
 769     }
 770
 771   return changed_mask;
 772 }
 773
 774 static void
 775 notify_set_changed (GObject       *object,
 776                     PangoFontMask  changed_mask)
 777 {
 778   if (changed_mask & PANGO_FONT_MASK_FAMILY)
 779     g_object_notify (object, "family_set");
 780   if (changed_mask & PANGO_FONT_MASK_STYLE)
 781     g_object_notify (object, "style_set");
 782   if (changed_mask & PANGO_FONT_MASK_VARIANT)
 783     g_object_notify (object, "variant_set");
 784   if (changed_mask & PANGO_FONT_MASK_WEIGHT)
 785     g_object_notify (object, "weight_set");
 786   if (changed_mask & PANGO_FONT_MASK_STRETCH)
 787     g_object_notify (object, "stretch_set");
 788   if (changed_mask & PANGO_FONT_MASK_SIZE)
 789     g_object_notify (object, "size_set");
 790 }
 791
 792 static void
 793 notify_fields_changed (GObject       *object,
 794                        PangoFontMask  changed_mask)
 795 {
 796   if (changed_mask & PANGO_FONT_MASK_FAMILY)
 797     g_object_notify (object, "family");
 798   if (changed_mask & PANGO_FONT_MASK_STYLE)
 799     g_object_notify (object, "style");
 800   if (changed_mask & PANGO_FONT_MASK_VARIANT)
 801     g_object_notify (object, "variant");
 802   if (changed_mask & PANGO_FONT_MASK_WEIGHT)
 803     g_object_notify (object, "weight");
 804   if (changed_mask & PANGO_FONT_MASK_STRETCH)
 805     g_object_notify (object, "stretch");
 806   if (changed_mask & PANGO_FONT_MASK_SIZE)
 807     g_object_notify (object, "size");
 808 }
 809
 810 static void
 811 set_font_description (GtkCellRendererText  *celltext,
 812                       PangoFontDescription *font_desc)
 813 {
 814   GObject *object = G_OBJECT (celltext);
 815   PangoFontDescription *new_font_desc;
 816   PangoFontMask old_mask, new_mask, changed_mask, set_changed_mask;
 817
 818   if (font_desc)
 819     new_font_desc = pango_font_description_copy (font_desc);
 820   else
 821     new_font_desc = pango_font_description_new ();
 822
 823   old_mask = pango_font_description_get_set_fields (celltext->font);
 824   new_mask = pango_font_description_get_set_fields (new_font_desc);
 825
 826   changed_mask = old_mask | new_mask;
 827   set_changed_mask = old_mask ^ new_mask;
 828
 829   pango_font_description_free (celltext->font);
 830   celltext->font = new_font_desc;
 831
 832   g_object_freeze_notify (object);
 833
 834   g_object_notify (object, "font_desc");
 835   g_object_notify (object, "font");
 836
 837   if (changed_mask & PANGO_FONT_MASK_FAMILY)
 838     g_object_notify (object, "family");
 839   if (changed_mask & PANGO_FONT_MASK_STYLE)
 840     g_object_notify (object, "style");
 841   if (changed_mask & PANGO_FONT_MASK_VARIANT)
 842     g_object_notify (object, "variant");
 843   if (changed_mask & PANGO_FONT_MASK_WEIGHT)
 844     g_object_notify (object, "weight");
 845   if (changed_mask & PANGO_FONT_MASK_STRETCH)
 846     g_object_notify (object, "stretch");
 847   if (changed_mask & PANGO_FONT_MASK_SIZE)
 848     {
 849       g_object_notify (object, "size");
 850       g_object_notify (object, "size_points");
 851     }
 852
 853   notify_set_changed (object, set_changed_mask);
 854
 855   g_object_thaw_notify (object);
 856 }
 857
 858 static void
 859 gtk_cell_renderer_text_set_property (GObject      *object,
 860                                      guint         param_id,
 861                                      const GValue *value,
 862                                      GParamSpec   *pspec)
 863 {
 864   GtkCellRendererText *celltext = GTK_CELL_RENDERER_TEXT (object);
 865   GtkCellRendererTextPrivate *priv;
 866
 867   priv = GTK_CELL_RENDERER_TEXT_GET_PRIVATE (object);
 868
 869   switch (param_id)
 870     {
 871     case PROP_TEXT:
 872       if (celltext->text)
 873         g_free (celltext->text);
 874
 875       if (priv->markup_set)
 876         {
 877           if (celltext->extra_attrs)
 878             pango_attr_list_unref (celltext->extra_attrs);
 879           celltext->extra_attrs = NULL;
 880           priv->markup_set = FALSE;
 881         }
 882
 883       celltext->text = g_strdup (g_value_get_string (value));
 884       g_object_notify (object, "text");
 885       break;
 886
 887     case PROP_ATTRIBUTES:
 888       if (celltext->extra_attrs)
 889         pango_attr_list_unref (celltext->extra_attrs);
 890
 891       celltext->extra_attrs = g_value_get_boxed (value);
 892       if (celltext->extra_attrs)
 893         pango_attr_list_ref (celltext->extra_attrs);
 894       break;
 895     case PROP_MARKUP:
 896       {
 897         const gchar *str;
 898         gchar *text = NULL;
 899         GError *error = NULL;
 900         PangoAttrList *attrs = NULL;
 901
 902         str = g_value_get_string (value);
 903         if (str && !pango_parse_markup (str,
 904                                         -1,
 905                                         0,
 906                                         &attrs,
 907                                         &text,
 908                                         NULL,
 909                                         &error))
 910           {
 911             g_warning ("Failed to set cell text from markup due to error parsing markup: %s",
 912                        error->message);
 913             g_error_free (error);
 914             return;
 915           }
 916
 917         if (celltext->text)
 918           g_free (celltext->text);
 919
 920         if (celltext->extra_attrs)
 921           pango_attr_list_unref (celltext->extra_attrs);
 922
 923         celltext->text = text;
 924         celltext->extra_attrs = attrs;
 925         priv->markup_set = TRUE;
 926       }
 927       break;
 928
 929     case PROP_SINGLE_PARAGRAPH_MODE:
 930       priv->single_paragraph = g_value_get_boolean (value);
 931       break;
 932
 933     case PROP_BACKGROUND:
 934       {
 935         GdkColor color;
 936
 937         if (!g_value_get_string (value))
 938           set_bg_color (celltext, NULL);       /* reset to backgrounmd_set to FALSE */
 939         else if (gdk_color_parse (g_value_get_string (value), &color))
 940           set_bg_color (celltext, &color);
 941         else
 942           g_warning ("Don't know color `%s'", g_value_get_string (value));
 943
 944         g_object_notify (object, "background_gdk");
 945       }
 946       break;
 947
 948     case PROP_FOREGROUND:
 949       {
 950         GdkColor color;
 951
 952         if (!g_value_get_string (value))
 953           set_fg_color (celltext, NULL);       /* reset to foreground_set to FALSE */
 954         else if (gdk_color_parse (g_value_get_string (value), &color))
 955           set_fg_color (celltext, &color);
 956         else
 957           g_warning ("Don't know color `%s'", g_value_get_string (value));
 958
 959         g_object_notify (object, "foreground_gdk");
 960       }
 961       break;
 962
 963     case PROP_BACKGROUND_GDK:
 964       /* This notifies the GObject itself. */
 965       set_bg_color (celltext, g_value_get_boxed (value));
 966       break;
 967
 968     case PROP_FOREGROUND_GDK:
 969       /* This notifies the GObject itself. */
 970       set_fg_color (celltext, g_value_get_boxed (value));
 971       break;
 972
 973     case PROP_FONT:
 974       {
 975         PangoFontDescription *font_desc = NULL;
 976         const gchar *name;
 977
 978         name = g_value_get_string (value);
 979
 980         if (name)
 981           font_desc = pango_font_description_from_string (name);
 982
 983         set_font_description (celltext, font_desc);
 984
 985         if (celltext->fixed_height_rows != -1)
 986           celltext->calc_fixed_height = TRUE;
 987       }
 988       break;
 989
 990     case PROP_FONT_DESC:
 991       set_font_description (celltext, g_value_get_boxed (value));
 992
 993       if (celltext->fixed_height_rows != -1)
 994         celltext->calc_fixed_height = TRUE;
 995       break;
 996
 997     case PROP_FAMILY:
 998     case PROP_STYLE:
 999     case PROP_VARIANT:
1000     case PROP_WEIGHT:
1001     case PROP_STRETCH:
1002     case PROP_SIZE:
1003     case PROP_SIZE_POINTS:
1004       {
1005         PangoFontMask old_set_mask = pango_font_description_get_set_fields (celltext->font);
1006
1007         switch (param_id)
1008           {
1009           case PROP_FAMILY:
1010             pango_font_description_set_family (celltext->font,
1011                                                g_value_get_string (value));
1012             break;
1013           case PROP_STYLE:
1014             pango_font_description_set_style (celltext->font,
1015                                               g_value_get_enum (value));
1016             break;
1017           case PROP_VARIANT:
1018             pango_font_description_set_variant (celltext->font,
1019                                                 g_value_get_enum (value));
1020             break;
1021           case PROP_WEIGHT:
1022             pango_font_description_set_weight (celltext->font,
1023                                                g_value_get_int (value));
1024             break;
1025           case PROP_STRETCH:
1026             pango_font_description_set_stretch (celltext->font,
1027                                                 g_value_get_enum (value));
1028             break;
1029           case PROP_SIZE:
1030             pango_font_description_set_size (celltext->font,
1031                                              g_value_get_int (value));
1032             g_object_notify (object, "size_points");
1033             break;
1034           case PROP_SIZE_POINTS:
1035             pango_font_description_set_size (celltext->font,
1036                                              g_value_get_double (value) * PANGO_SCALE);
1037             g_object_notify (object, "size");
1038             break;
1039           }
1040
1041         if (celltext->fixed_height_rows != -1)
1042           celltext->calc_fixed_height = TRUE;
1043
1044         notify_set_changed (object, old_set_mask & pango_font_description_get_set_fields (celltext->font));
1045         g_object_notify (object, "font_desc");
1046         g_object_notify (object, "font");
1047
1048         break;
1049       }
1050
1051     case PROP_SCALE:
1052       celltext->font_scale = g_value_get_double (value);
1053       celltext->scale_set = TRUE;
1054       if (celltext->fixed_height_rows != -1)
1055         celltext->calc_fixed_height = TRUE;
1056       g_object_notify (object, "scale_set");
1057       break;
1058
1059     case PROP_EDITABLE:
1060       celltext->editable = g_value_get_boolean (value);
1061       celltext->editable_set = TRUE;
1062       if (celltext->editable)
1063         GTK_CELL_RENDERER (celltext)->mode = GTK_CELL_RENDERER_MODE_EDITABLE;
1064       else
1065         GTK_CELL_RENDERER (celltext)->mode = GTK_CELL_RENDERER_MODE_INERT;
1066       g_object_notify (object, "editable_set");
1067       break;
1068
1069     case PROP_STRIKETHROUGH:
1070       celltext->strikethrough = g_value_get_boolean (value);
1071       celltext->strikethrough_set = TRUE;
1072       g_object_notify (object, "strikethrough_set");
1073       break;
1074
1075     case PROP_UNDERLINE:
1076       celltext->underline_style = g_value_get_enum (value);
1077       celltext->underline_set = TRUE;
1078       g_object_notify (object, "underline_set");
1079
1080       break;
1081
1082     case PROP_RISE:
1083       celltext->rise = g_value_get_int (value);
1084       celltext->rise_set = TRUE;
1085       g_object_notify (object, "rise_set");
1086       if (celltext->fixed_height_rows != -1)
1087         celltext->calc_fixed_height = TRUE;
1088       break;
1089
1090     case PROP_LANGUAGE:
1091       priv->language_set = TRUE;
1092       if (priv->language)
1093         g_object_unref (priv->language);
1094       priv->language = pango_language_from_string (g_value_get_string (value));
1095       g_object_notify (object, "language_set");
1096       break;
1097
1098     case PROP_BACKGROUND_SET:
1099       celltext->background_set = g_value_get_boolean (value);
1100       break;
1101
1102     case PROP_FOREGROUND_SET:
1103       celltext->foreground_set = g_value_get_boolean (value);
1104       break;
1105
1106     case PROP_FAMILY_SET:
1107     case PROP_STYLE_SET:
1108     case PROP_VARIANT_SET:
1109     case PROP_WEIGHT_SET:
1110     case PROP_STRETCH_SET:
1111     case PROP_SIZE_SET:
1112       if (!g_value_get_boolean (value))
1113         {
1114           pango_font_description_unset_fields (celltext->font,
1115                                                get_property_font_set_mask (param_id));
1116         }
1117       else
1118         {
1119           PangoFontMask changed_mask;
1120
1121           changed_mask = set_font_desc_fields (celltext->font,
1122                                                get_property_font_set_mask (param_id));
1123           notify_fields_changed (G_OBJECT (celltext), changed_mask);
1124         }
1125       break;
1126
1127     case PROP_SCALE_SET:
1128       celltext->scale_set = g_value_get_boolean (value);
1129       break;
1130
1131     case PROP_EDITABLE_SET:
1132       celltext->editable_set = g_value_get_boolean (value);
1133       break;
1134
1135     case PROP_STRIKETHROUGH_SET:
1136       celltext->strikethrough_set = g_value_get_boolean (value);
1137       break;
1138
1139     case PROP_UNDERLINE_SET:
1140       celltext->underline_set = g_value_get_boolean (value);
1141       break;
1142
1143     case PROP_RISE_SET:
1144       celltext->rise_set = g_value_get_boolean (value);
1145       break;
1146
1147     case PROP_LANGUAGE_SET:
1148       priv->language_set = g_value_get_boolean (value);
1149       break;
1150
1151     default:
1152       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
1153       break;
1154     }
1155 }
1156
1157 /**
1158  * gtk_cell_renderer_text_new:
1159  *
1160  * Creates a new #GtkCellRendererText. Adjust how text is drawn using
1161  * object properties. Object properties can be
1162  * set globally (with g_object_set()). Also, with #GtkTreeViewColumn,
1163  * you can bind a property to a value in a #GtkTreeModel. For example,
1164  * you can bind the "text" property on the cell renderer to a string
1165  * value in the model, thus rendering a different string in each row
1166  * of the #GtkTreeView
1167  *
1168  * Return value: the new cell renderer
1169  **/
1170 GtkCellRenderer *
1171 gtk_cell_renderer_text_new (void)
1172 {
1173   return g_object_new (GTK_TYPE_CELL_RENDERER_TEXT, NULL);
1174 }
1175
1176 static void
1177 add_attr (PangoAttrList  *attr_list,
1178           PangoAttribute *attr)
1179 {
1180   attr->start_index = 0;
1181   attr->end_index = G_MAXINT;
1182
1183   pango_attr_list_insert (attr_list, attr);
1184 }
1185
1186 static PangoLayout*
1187 get_layout (GtkCellRendererText *celltext,
1188             GtkWidget           *widget,
1189             gboolean             will_render,
1190             GtkCellRendererState flags)
1191 {
1192   PangoAttrList *attr_list;
1193   PangoLayout *layout;
1194   PangoUnderline uline;
1195   GtkCellRendererTextPrivate *priv;
1196
1197   priv = GTK_CELL_RENDERER_TEXT_GET_PRIVATE (celltext);
1198
1199   layout = gtk_widget_create_pango_layout (widget, celltext->text);
1200
1201   if (celltext->extra_attrs)
1202     attr_list = pango_attr_list_copy (celltext->extra_attrs);
1203   else
1204     attr_list = pango_attr_list_new ();
1205
1206   pango_layout_set_single_paragraph_mode (layout, priv->single_paragraph);
1207
1208   if (will_render)
1209     {
1210       /* Add options that affect appearance but not size */
1211
1212       /* note that background doesn't go here, since it affects
1213        * background_area not the PangoLayout area
1214        */
1215
1216       if (celltext->foreground_set)
1217         {
1218           PangoColor color;
1219
1220           color = celltext->foreground;
1221
1222           add_attr (attr_list,
1223                     pango_attr_foreground_new (color.red, color.green, color.blue));
1224         }
1225
1226       if (celltext->strikethrough_set)
1227         add_attr (attr_list,
1228                   pango_attr_strikethrough_new (celltext->strikethrough));
1229     }
1230
1231   add_attr (attr_list, pango_attr_font_desc_new (celltext->font));
1232
1233   if (celltext->scale_set &&
1234       celltext->font_scale != 1.0)
1235     add_attr (attr_list, pango_attr_scale_new (celltext->font_scale));
1236
1237   if (celltext->underline_set)
1238     uline = celltext->underline_style;
1239   else
1240     uline = PANGO_UNDERLINE_NONE;
1241
1242   if (priv->language_set)
1243     add_attr (attr_list, pango_attr_language_new (priv->language));
1244
1245   if ((flags & GTK_CELL_RENDERER_PRELIT) == GTK_CELL_RENDERER_PRELIT)
1246     {
1247       switch (uline)
1248         {
1249         case PANGO_UNDERLINE_NONE:
1250           uline = PANGO_UNDERLINE_SINGLE;
1251           break;
1252
1253         case PANGO_UNDERLINE_SINGLE:
1254           uline = PANGO_UNDERLINE_DOUBLE;
1255           break;
1256
1257         default:
1258           break;
1259         }
1260     }
1261
1262   if (uline != PANGO_UNDERLINE_NONE)
1263     add_attr (attr_list, pango_attr_underline_new (celltext->underline_style));
1264
1265   if (celltext->rise_set)
1266     add_attr (attr_list, pango_attr_rise_new (celltext->rise));
1267
1268   pango_layout_set_attributes (layout, attr_list);
1269   pango_layout_set_width (layout, -1);
1270
1271   pango_attr_list_unref (attr_list);
1272
1273   return layout;
1274 }
1275
1276 static void
1277 gtk_cell_renderer_text_get_size (GtkCellRenderer *cell,
1278                                  GtkWidget       *widget,
1279                                  GdkRectangle    *cell_area,
1280                                  gint            *x_offset,
1281                                  gint            *y_offset,
1282                                  gint            *width,
1283                                  gint            *height)
1284 {
1285   GtkCellRendererText *celltext = (GtkCellRendererText *) cell;
1286   PangoRectangle rect;
1287   PangoLayout *layout;
1288
1289   if (celltext->calc_fixed_height)
1290     {
1291       PangoContext *context;
1292       PangoFontMetrics *metrics;
1293       PangoFontDescription *font_desc;
1294       gint row_height;
1295
1296       font_desc = pango_font_description_copy (widget->style->font_desc);
1297       pango_font_description_merge (font_desc, celltext->font, TRUE);
1298
1299       if (celltext->scale_set)
1300         pango_font_description_set_size (font_desc,
1301                                          celltext->font_scale * pango_font_description_get_size (font_desc));
1302
1303       context = gtk_widget_get_pango_context (widget);
1304
1305       metrics = pango_context_get_metrics (context,
1306                                            font_desc,
1307                                            pango_context_get_language (context));
1308       row_height = (pango_font_metrics_get_ascent (metrics) +
1309                     pango_font_metrics_get_descent (metrics));
1310       pango_font_metrics_unref (metrics);
1311
1312       gtk_cell_renderer_set_fixed_size (cell,
1313                                         cell->width, 2*cell->ypad +
1314                                         celltext->fixed_height_rows * PANGO_PIXELS (row_height));
1315
1316       if (height)
1317         {
1318           *height = cell->height;
1319           height = NULL;
1320         }
1321       celltext->calc_fixed_height = FALSE;
1322       if (width == NULL)
1323         return;
1324     }
1325   layout = get_layout (celltext, widget, FALSE, 0);
1326   pango_layout_get_pixel_extents (layout, NULL, &rect);
1327
1328   if (width)
1329     *width = GTK_CELL_RENDERER (celltext)->xpad * 2 + rect.width;
1330
1331   if (height)
1332     *height = GTK_CELL_RENDERER (celltext)->ypad * 2 + rect.height;
1333
1334   if (cell_area)
1335     {
1336       if (x_offset)
1337         {
1338           *x_offset = ((gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL) ?
1339                        (1.0 - cell->xalign) : cell->xalign) * (cell_area->width - rect.width - (2 * cell->xpad));
1340           *x_offset = MAX (*x_offset, 0);
1341         }
1342       if (y_offset)
1343         {
1344           *y_offset = cell->yalign * (cell_area->height - rect.height - (2 * cell->ypad));
1345           *y_offset = MAX (*y_offset, 0);
1346         }
1347     }
1348
1349   g_object_unref (layout);
1350 }
1351
1352 static void
1353 gtk_cell_renderer_text_render (GtkCellRenderer      *cell,
1354                                GdkDrawable          *window,
1355                                GtkWidget            *widget,
1356                                GdkRectangle         *background_area,
1357                                GdkRectangle         *cell_area,
1358                                GdkRectangle         *expose_area,
1359                                GtkCellRendererState  flags)
1360
1361 {
1362   GtkCellRendererText *celltext = (GtkCellRendererText *) cell;
1363   PangoLayout *layout;
1364   GtkStateType state;
1365   gint x_offset;
1366   gint y_offset;
1367
1368   layout = get_layout (celltext, widget, TRUE, flags);
1369
1370   gtk_cell_renderer_text_get_size (cell, widget, cell_area, &x_offset, &y_offset, NULL, NULL);
1371
1372   if ((flags & GTK_CELL_RENDERER_SELECTED) == GTK_CELL_RENDERER_SELECTED)
1373     {
1374       if (GTK_WIDGET_HAS_FOCUS (widget))
1375         state = GTK_STATE_SELECTED;
1376       else
1377         state = GTK_STATE_ACTIVE;
1378     }
1379   else
1380     {
1381       if (GTK_WIDGET_STATE (widget) == GTK_STATE_INSENSITIVE)
1382         state = GTK_STATE_INSENSITIVE;
1383       else
1384         state = GTK_STATE_NORMAL;
1385     }
1386
1387   if (celltext->background_set && state != GTK_STATE_SELECTED)
1388     {
1389       GdkColor color;
1390       GdkGC *gc;
1391
1392       color.red = celltext->background.red;
1393       color.green = celltext->background.green;
1394       color.blue = celltext->background.blue;
1395
1396       gc = gdk_gc_new (window);
1397
1398       gdk_gc_set_rgb_fg_color (gc, &color);
1399
1400       gdk_draw_rectangle (window,
1401                           gc,
1402                           TRUE,
1403                           background_area->x,
1404                           background_area->y,
1405                           background_area->width,
1406                           background_area->height);
1407
1408       g_object_unref (gc);
1409     }
1410
1411   gtk_paint_layout (widget->style,
1412                     window,
1413                     state,
1414                     TRUE,
1415                     cell_area,
1416                     widget,
1417                     "cellrenderertext",
1418                     cell_area->x + x_offset + cell->xpad,
1419                     cell_area->y + y_offset + cell->ypad,
1420                     layout);
1421
1422   g_object_unref (layout);
1423 }
1424
1425 static void
1426 gtk_cell_renderer_text_editing_done (GtkCellEditable *entry,
1427                                      gpointer         data)
1428 {
1429   const gchar *path;
1430   const gchar *new_text;
1431   GtkCellRendererTextPrivate *priv;
1432
1433   priv = GTK_CELL_RENDERER_TEXT_GET_PRIVATE (data);
1434
1435   if (priv->focus_out_id > 0)
1436     {
1437       g_signal_handler_disconnect (entry, priv->focus_out_id);
1438       priv->focus_out_id = 0;
1439     }
1440
1441   if (GTK_ENTRY (entry)->editing_canceled)
1442     {
1443       gtk_cell_renderer_editing_canceled (GTK_CELL_RENDERER (data));
1444       return;
1445     }
1446
1447   path = g_object_get_data (G_OBJECT (entry), GTK_CELL_RENDERER_TEXT_PATH);
1448   new_text = gtk_entry_get_text (GTK_ENTRY (entry));
1449
1450   g_signal_emit (data, text_cell_renderer_signals[EDITED], 0, path, new_text);
1451 }
1452
1453 static gboolean
1454 gtk_cell_renderer_text_focus_out_event (GtkWidget *entry,
1455                                         GdkEvent  *event,
1456                                         gpointer   data)
1457 {
1458   gtk_cell_renderer_text_editing_done (GTK_CELL_EDITABLE (entry), data);
1459
1460   /* entry needs focus-out-event */
1461   return FALSE;
1462 }
1463
1464 static GtkCellEditable *
1465 gtk_cell_renderer_text_start_editing (GtkCellRenderer      *cell,
1466                                       GdkEvent             *event,
1467                                       GtkWidget            *widget,
1468                                       const gchar          *path,
1469                                       GdkRectangle         *background_area,
1470                                       GdkRectangle         *cell_area,
1471                                       GtkCellRendererState  flags)
1472 {
1473   GtkWidget *entry;
1474   GtkCellRendererText *celltext;
1475   GtkCellRendererTextPrivate *priv;
1476
1477   celltext = GTK_CELL_RENDERER_TEXT (cell);
1478   priv = GTK_CELL_RENDERER_TEXT_GET_PRIVATE (cell);
1479
1480   /* If the cell isn't editable we return NULL. */
1481   if (celltext->editable == FALSE)
1482     return NULL;
1483
1484   entry = g_object_new (GTK_TYPE_ENTRY,
1485                         "has_frame", FALSE,
1486                         NULL);
1487
1488   if (celltext->text)
1489     gtk_entry_set_text (GTK_ENTRY (entry), celltext->text);
1490   g_object_set_data_full (G_OBJECT (entry), GTK_CELL_RENDERER_TEXT_PATH, g_strdup (path), g_free);
1491
1492   gtk_editable_select_region (GTK_EDITABLE (entry), 0, -1);
1493
1494   gtk_widget_show (entry);
1495   g_signal_connect (entry,
1496                     "editing_done",
1497                     G_CALLBACK (gtk_cell_renderer_text_editing_done),
1498                     celltext);
1499   priv->focus_out_id = g_signal_connect (entry, "focus_out_event",
1500                          G_CALLBACK (gtk_cell_renderer_text_focus_out_event),
1501                          celltext);
1502
1503   return GTK_CELL_EDITABLE (entry);
1504
1505 }
1506
1507 /**
1508  * gtk_cell_renderer_text_set_fixed_height_from_font:
1509  * @renderer: A #GtkCellRendererText
1510  * @number_of_rows: Number of rows of text each cell renderer is allocated, or -1
1511  *
1512  * Sets the height of a renderer to explicitly be determined by the "font" and
1513  * "y_pad" property set on it.  Further changes in these properties do not
1514  * affect the height, so they must be accompanied by a subsequent call to this
1515  * function.  Using this function is unflexible, and should really only be used
1516  * if calculating the size of a cell is too slow (ie, a massive number of cells
1517  * displayed).  If @number_of_rows is -1, then the fixed height is unset, and
1518  * the height is determined by the properties again.
1519  **/
1520 void
1521 gtk_cell_renderer_text_set_fixed_height_from_font (GtkCellRendererText *renderer,
1522                                                    gint                 number_of_rows)
1523 {
1524   g_return_if_fail (GTK_IS_CELL_RENDERER_TEXT (renderer));
1525   g_return_if_fail (number_of_rows == -1 || number_of_rows > 0);
1526
1527   if (number_of_rows == -1)
1528     {
1529       gtk_cell_renderer_set_fixed_size (GTK_CELL_RENDERER (renderer),
1530                                         GTK_CELL_RENDERER (renderer)->width,
1531                                         -1);
1532     }
1533   else
1534     {
1535       renderer->fixed_height_rows = number_of_rows;
1536       renderer->calc_fixed_height = TRUE;
1537     }
1538 }