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 <config.h>
  21 #include <stdlib.h>
  22 #include "gtkcellrenderertext.h"
  23 #include "gtkeditable.h"
  24 #include "gtkentry.h"
  25 #include "gtkmarshalers.h"
  26 #include "gtkintl.h"
  27 #include "gtktreeprivate.h"
  28
  29 static void gtk_cell_renderer_text_init       (GtkCellRendererText      *celltext);
  30 static void gtk_cell_renderer_text_class_init (GtkCellRendererTextClass *class);
  31 static void gtk_cell_renderer_text_finalize   (GObject                  *object);
  32
  33 static void gtk_cell_renderer_text_get_property  (GObject                  *object,
  34                                                   guint                     param_id,
  35                                                   GValue                   *value,
  36                                                   GParamSpec               *pspec);
  37 static void gtk_cell_renderer_text_set_property  (GObject                  *object,
  38                                                   guint                     param_id,
  39                                                   const GValue             *value,
  40                                                   GParamSpec               *pspec);
  41 static void gtk_cell_renderer_text_get_size   (GtkCellRenderer          *cell,
  42                                                GtkWidget                *widget,
  43                                                GdkRectangle             *cell_area,
  44                                                gint                     *x_offset,
  45                                                gint                     *y_offset,
  46                                                gint                     *width,
  47                                                gint                     *height);
  48 static void gtk_cell_renderer_text_render     (GtkCellRenderer          *cell,
  49                                                GdkWindow                *window,
  50                                                GtkWidget                *widget,
  51                                                GdkRectangle             *background_area,
  52                                                GdkRectangle             *cell_area,
  53                                                GdkRectangle             *expose_area,
  54                                                GtkCellRendererState      flags);
  55
  56 static GtkCellEditable *gtk_cell_renderer_text_start_editing (GtkCellRenderer      *cell,
  57                                                               GdkEvent             *event,
  58                                                               GtkWidget            *widget,
  59                                                               const gchar          *path,
  60                                                               GdkRectangle         *background_area,
  61                                                               GdkRectangle         *cell_area,
  62                                                               GtkCellRendererState  flags);
  63
  64 enum {
  65   EDITED,
  66   LAST_SIGNAL
  67 };
  68
  69 enum {
  70   PROP_0,
  71
  72   PROP_TEXT,
  73   PROP_MARKUP,
  74   PROP_ATTRIBUTES,
  75   PROP_SINGLE_PARAGRAPH_MODE,
  76
  77   /* Style args */
  78   PROP_BACKGROUND,
  79   PROP_FOREGROUND,
  80   PROP_BACKGROUND_GDK,
  81   PROP_FOREGROUND_GDK,
  82   PROP_FONT,
  83   PROP_FONT_DESC,
  84   PROP_FAMILY,
  85   PROP_STYLE,
  86   PROP_VARIANT,
  87   PROP_WEIGHT,
  88   PROP_STRETCH,
  89   PROP_SIZE,
  90   PROP_SIZE_POINTS,
  91   PROP_SCALE,
  92   PROP_EDITABLE,
  93   PROP_STRIKETHROUGH,
  94   PROP_UNDERLINE,
  95   PROP_RISE,
  96   PROP_LANGUAGE,
  97
  98   /* Whether-a-style-arg-is-set args */
  99   PROP_BACKGROUND_SET,
 100   PROP_FOREGROUND_SET,
 101   PROP_FAMILY_SET,
 102   PROP_STYLE_SET,
 103   PROP_VARIANT_SET,
 104   PROP_WEIGHT_SET,
 105   PROP_STRETCH_SET,
 106   PROP_SIZE_SET,
 107   PROP_SCALE_SET,
 108   PROP_EDITABLE_SET,
 109   PROP_STRIKETHROUGH_SET,
 110   PROP_UNDERLINE_SET,
 111   PROP_RISE_SET,
 112   PROP_LANGUAGE_SET
 113 };
 114
 115 static gpointer parent_class;
 116 static guint text_cell_renderer_signals [LAST_SIGNAL];
 117
 118 #define GTK_CELL_RENDERER_TEXT_PATH "gtk-cell-renderer-text-path"
 119
 120 #define GTK_CELL_RENDERER_TEXT_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GTK_TYPE_CELL_RENDERER_TEXT, GtkCellRendererTextPrivate))
 121
 122 typedef struct _GtkCellRendererTextPrivate GtkCellRendererTextPrivate;
 123 struct _GtkCellRendererTextPrivate
 124 {
 125   guint single_paragraph : 1;
 126   guint language_set : 1;
 127   guint markup_set : 1;
 128
 129   gulong focus_out_id;
 130   PangoLanguage *language;
 131 };
 132
 133
 134 GType
 135 gtk_cell_renderer_text_get_type (void)
 136 {
 137   static GType cell_text_type = 0;
 138
 139   if (!cell_text_type)
 140     {
 141       static const GTypeInfo cell_text_info =
 142       {
 143         sizeof (GtkCellRendererTextClass),
 144         NULL,           /* base_init */
 145         NULL,           /* base_finalize */
 146         (GClassInitFunc) gtk_cell_renderer_text_class_init,
 147         NULL,           /* class_finalize */
 148         NULL,           /* class_data */
 149         sizeof (GtkCellRendererText),
 150         0,              /* n_preallocs */
 151         (GInstanceInitFunc) gtk_cell_renderer_text_init,
 152       };
 153
 154       cell_text_type =
 155         g_type_register_static (GTK_TYPE_CELL_RENDERER, "GtkCellRendererText",
 156                                 &cell_text_info, 0);
 157     }
 158
 159   return cell_text_type;
 160 }
 161
 162 static void
 163 gtk_cell_renderer_text_init (GtkCellRendererText *celltext)
 164 {
 165   GTK_CELL_RENDERER (celltext)->xalign = 0.0;
 166   GTK_CELL_RENDERER (celltext)->yalign = 0.5;
 167   GTK_CELL_RENDERER (celltext)->xpad = 2;
 168   GTK_CELL_RENDERER (celltext)->ypad = 2;
 169   celltext->fixed_height_rows = -1;
 170   celltext->font = pango_font_description_new ();
 171 }
 172
 173 static void
 174 gtk_cell_renderer_text_class_init (GtkCellRendererTextClass *class)
 175 {
 176   GObjectClass *object_class = G_OBJECT_CLASS (class);
 177   GtkCellRendererClass *cell_class = GTK_CELL_RENDERER_CLASS (class);
 178
 179   parent_class = g_type_class_peek_parent (class);
 180
 181   object_class->finalize = gtk_cell_renderer_text_finalize;
 182
 183   object_class->get_property = gtk_cell_renderer_text_get_property;
 184   object_class->set_property = gtk_cell_renderer_text_set_property;
 185
 186   cell_class->get_size = gtk_cell_renderer_text_get_size;
 187   cell_class->render = gtk_cell_renderer_text_render;
 188   cell_class->start_editing = gtk_cell_renderer_text_start_editing;
 189
 190   g_object_class_install_property (object_class,
 191                                    PROP_TEXT,
 192                                    g_param_spec_string ("text",
 193                                                         P_("Text"),
 194                                                         P_("Text to render"),
 195                                                         NULL,
 196                                                         G_PARAM_READWRITE));
 197
 198   g_object_class_install_property (object_class,
 199                                    PROP_MARKUP,
 200                                    g_param_spec_string ("markup",
 201                                                         P_("Markup"),
 202                                                         P_("Marked up text to render"),
 203                                                         NULL,
 204                                                         G_PARAM_WRITABLE));
 205
 206   g_object_class_install_property (object_class,
 207                                    PROP_ATTRIBUTES,
 208                                    g_param_spec_boxed ("attributes",
 209                                                        P_("Attributes"),
 210                                                        P_("A list of style attributes to apply to the text of the renderer"),
 211                                                        PANGO_TYPE_ATTR_LIST,
 212                                                        G_PARAM_READWRITE));
 213
 214   g_object_class_install_property (object_class,
 215                                    PROP_SINGLE_PARAGRAPH_MODE,
 216                                    g_param_spec_boolean ("single_paragraph_mode",
 217                                                          P_("Single Paragraph Mode"),
 218                                                          P_("Whether or not to keep all text in a single paragraph"),
 219                                                          FALSE,
 220                                                          G_PARAM_READWRITE));
 221
 222
 223   g_object_class_install_property (object_class,
 224                                    PROP_BACKGROUND,
 225                                    g_param_spec_string ("background",
 226                                                         P_("Background color name"),
 227                                                         P_("Background color as a string"),
 228                                                         NULL,
 229                                                         G_PARAM_WRITABLE));
 230
 231   g_object_class_install_property (object_class,
 232                                    PROP_BACKGROUND_GDK,
 233                                    g_param_spec_boxed ("background_gdk",
 234                                                        P_("Background color"),
 235                                                        P_("Background color as a GdkColor"),
 236                                                        GDK_TYPE_COLOR,
 237                                                        G_PARAM_READABLE | G_PARAM_WRITABLE));
 238
 239   g_object_class_install_property (object_class,
 240                                    PROP_FOREGROUND,
 241                                    g_param_spec_string ("foreground",
 242                                                         P_("Foreground color name"),
 243                                                         P_("Foreground color as a string"),
 244                                                         NULL,
 245                                                         G_PARAM_WRITABLE));
 246
 247   g_object_class_install_property (object_class,
 248                                    PROP_FOREGROUND_GDK,
 249                                    g_param_spec_boxed ("foreground_gdk",
 250                                                        P_("Foreground color"),
 251                                                        P_("Foreground color as a GdkColor"),
 252                                                        GDK_TYPE_COLOR,
 253                                                        G_PARAM_READABLE | G_PARAM_WRITABLE));
 254
 255
 256   g_object_class_install_property (object_class,
 257                                    PROP_EDITABLE,
 258                                    g_param_spec_boolean ("editable",
 259                                                          P_("Editable"),
 260                                                          P_("Whether the text can be modified by the user"),
 261                                                          FALSE,
 262                                                          G_PARAM_READABLE | G_PARAM_WRITABLE));
 263
 264   g_object_class_install_property (object_class,
 265                                    PROP_FONT,
 266                                    g_param_spec_string ("font",
 267                                                         P_("Font"),
 268                                                         P_("Font description as a string"),
 269                                                         NULL,
 270                                                         G_PARAM_READABLE | G_PARAM_WRITABLE));
 271
 272   g_object_class_install_property (object_class,
 273                                    PROP_FONT_DESC,
 274                                    g_param_spec_boxed ("font_desc",
 275                                                        P_("Font"),
 276                                                        P_("Font description as a PangoFontDescription struct"),
 277                                                        PANGO_TYPE_FONT_DESCRIPTION,
 278                                                        G_PARAM_READABLE | G_PARAM_WRITABLE));
 279
 280
 281   g_object_class_install_property (object_class,
 282                                    PROP_FAMILY,
 283                                    g_param_spec_string ("family",
 284                                                         P_("Font family"),
 285                                                         P_("Name of the font family, e.g. Sans, Helvetica, Times, Monospace"),
 286                                                         NULL,
 287                                                         G_PARAM_READABLE | G_PARAM_WRITABLE));
 288
 289   g_object_class_install_property (object_class,
 290                                    PROP_STYLE,
 291                                    g_param_spec_enum ("style",
 292                                                       P_("Font style"),
 293                                                       P_("Font style"),
 294                                                       PANGO_TYPE_STYLE,
 295                                                       PANGO_STYLE_NORMAL,
 296                                                       G_PARAM_READABLE | G_PARAM_WRITABLE));
 297
 298   g_object_class_install_property (object_class,
 299                                    PROP_VARIANT,
 300                                    g_param_spec_enum ("variant",
 301                                                      P_("Font variant"),
 302                                                      P_("Font variant"),
 303                                                       PANGO_TYPE_VARIANT,
 304                                                       PANGO_VARIANT_NORMAL,
 305                                                       G_PARAM_READABLE | G_PARAM_WRITABLE));
 306
 307   g_object_class_install_property (object_class,
 308                                    PROP_WEIGHT,
 309                                    g_param_spec_int ("weight",
 310                                                      P_("Font weight"),
 311                                                      P_("Font weight"),
 312                                                      0,
 313                                                      G_MAXINT,
 314                                                      PANGO_WEIGHT_NORMAL,
 315                                                      G_PARAM_READABLE | G_PARAM_WRITABLE));
 316
 317    g_object_class_install_property (object_class,
 318                                    PROP_STRETCH,
 319                                    g_param_spec_enum ("stretch",
 320                                                       P_("Font stretch"),
 321                                                       P_("Font stretch"),
 322                                                       PANGO_TYPE_STRETCH,
 323                                                       PANGO_STRETCH_NORMAL,
 324                                                       G_PARAM_READABLE | G_PARAM_WRITABLE));
 325
 326   g_object_class_install_property (object_class,
 327                                    PROP_SIZE,
 328                                    g_param_spec_int ("size",
 329                                                      P_("Font size"),
 330                                                      P_("Font size"),
 331                                                      0,
 332                                                      G_MAXINT,
 333                                                      0,
 334                                                      G_PARAM_READABLE | G_PARAM_WRITABLE));
 335
 336   g_object_class_install_property (object_class,
 337                                    PROP_SIZE_POINTS,
 338                                    g_param_spec_double ("size_points",
 339                                                         P_("Font points"),
 340                                                         P_("Font size in points"),
 341                                                         0.0,
 342                                                         G_MAXDOUBLE,
 343                                                         0.0,
 344                                                         G_PARAM_READABLE | G_PARAM_WRITABLE));
 345
 346   g_object_class_install_property (object_class,
 347                                    PROP_SCALE,
 348                                    g_param_spec_double ("scale",
 349                                                         P_("Font scale"),
 350                                                         P_("Font scaling factor"),
 351                                                         0.0,
 352                                                         G_MAXDOUBLE,
 353                                                         1.0,
 354                                                         G_PARAM_READABLE | G_PARAM_WRITABLE));
 355
 356   g_object_class_install_property (object_class,
 357                                    PROP_RISE,
 358                                    g_param_spec_int ("rise",
 359                                                      P_("Rise"),
 360                                                      P_("Offset of text above the baseline (below the baseline if rise is negative)"),
 361                                                      -G_MAXINT,
 362                                                      G_MAXINT,
 363                                                      0,
 364                                                      G_PARAM_READABLE | G_PARAM_WRITABLE));
 365
 366
 367   g_object_class_install_property (object_class,
 368                                    PROP_STRIKETHROUGH,
 369                                    g_param_spec_boolean ("strikethrough",
 370                                                          P_("Strikethrough"),
 371                                                          P_("Whether to strike through the text"),
 372                                                          FALSE,
 373                                                          G_PARAM_READABLE | G_PARAM_WRITABLE));
 374
 375   g_object_class_install_property (object_class,
 376                                    PROP_UNDERLINE,
 377                                    g_param_spec_enum ("underline",
 378                                                       P_("Underline"),
 379                                                       P_("Style of underline for this text"),
 380                                                       PANGO_TYPE_UNDERLINE,
 381                                                       PANGO_UNDERLINE_NONE,
 382                                                       G_PARAM_READABLE | G_PARAM_WRITABLE));
 383
 384   g_object_class_install_property (object_class,
 385                                    PROP_LANGUAGE,
 386                                    g_param_spec_string ("language",
 387                                                         P_("Language"),
 388                                                         P_("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"),
 389                                                         NULL,
 390                                                         G_PARAM_READWRITE));
 391
 392
 393   /* Style props are set or not */
 394
 395 #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))
 396
 397   ADD_SET_PROP ("background_set", PROP_BACKGROUND_SET,
 398                 P_("Background set"),
 399                 P_("Whether this tag affects the background color"));
 400
 401   ADD_SET_PROP ("foreground_set", PROP_FOREGROUND_SET,
 402                 P_("Foreground set"),
 403                 P_("Whether this tag affects the foreground color"));
 404
 405   ADD_SET_PROP ("editable_set", PROP_EDITABLE_SET,
 406                 P_("Editability set"),
 407                 P_("Whether this tag affects text editability"));
 408
 409   ADD_SET_PROP ("family_set", PROP_FAMILY_SET,
 410                 P_("Font family set"),
 411                 P_("Whether this tag affects the font family"));
 412
 413   ADD_SET_PROP ("style_set", PROP_STYLE_SET,
 414                 P_("Font style set"),
 415                 P_("Whether this tag affects the font style"));
 416
 417   ADD_SET_PROP ("variant_set", PROP_VARIANT_SET,
 418                 P_("Font variant set"),
 419                 P_("Whether this tag affects the font variant"));
 420
 421   ADD_SET_PROP ("weight_set", PROP_WEIGHT_SET,
 422                 P_("Font weight set"),
 423                 P_("Whether this tag affects the font weight"));
 424
 425   ADD_SET_PROP ("stretch_set", PROP_STRETCH_SET,
 426                 P_("Font stretch set"),
 427                 P_("Whether this tag affects the font stretch"));
 428
 429   ADD_SET_PROP ("size_set", PROP_SIZE_SET,
 430                 P_("Font size set"),
 431                 P_("Whether this tag affects the font size"));
 432
 433   ADD_SET_PROP ("scale_set", PROP_SCALE_SET,
 434                 P_("Font scale set"),
 435                 P_("Whether this tag scales the font size by a factor"));
 436
 437   ADD_SET_PROP ("rise_set", PROP_RISE_SET,
 438                 P_("Rise set"),
 439                 P_("Whether this tag affects the rise"));
 440
 441   ADD_SET_PROP ("strikethrough_set", PROP_STRIKETHROUGH_SET,
 442                 P_("Strikethrough set"),
 443                 P_("Whether this tag affects strikethrough"));
 444
 445   ADD_SET_PROP ("underline_set", PROP_UNDERLINE_SET,
 446                 P_("Underline set"),
 447                 P_("Whether this tag affects underlining"));
 448
 449   ADD_SET_PROP ("language_set", PROP_LANGUAGE_SET,
 450                 P_("Language set"),
 451                 P_("Whether this tag affects the language the text is rendered as"));
 452
 453   text_cell_renderer_signals [EDITED] =
 454     g_signal_new ("edited",
 455                   G_OBJECT_CLASS_TYPE (object_class),
 456                   G_SIGNAL_RUN_LAST,
 457                   G_STRUCT_OFFSET (GtkCellRendererTextClass, edited),
 458                   NULL, NULL,
 459                   _gtk_marshal_VOID__STRING_STRING,
 460                   G_TYPE_NONE, 2,
 461                   G_TYPE_STRING,
 462                   G_TYPE_STRING);
 463
 464   g_type_class_add_private (object_class, sizeof (GtkCellRendererTextPrivate));
 465 }
 466
 467 static void
 468 gtk_cell_renderer_text_finalize (GObject *object)
 469 {
 470   GtkCellRendererText *celltext = GTK_CELL_RENDERER_TEXT (object);
 471   GtkCellRendererTextPrivate *priv;
 472
 473   priv = GTK_CELL_RENDERER_TEXT_GET_PRIVATE (object);
 474
 475   pango_font_description_free (celltext->font);
 476
 477   if (celltext->text)
 478     g_free (celltext->text);
 479
 480   if (celltext->extra_attrs)
 481     pango_attr_list_unref (celltext->extra_attrs);
 482
 483   if (priv->language)
 484     g_object_unref (priv->language);
 485
 486   (* G_OBJECT_CLASS (parent_class)->finalize) (object);
 487 }
 488
 489 static PangoFontMask
 490 get_property_font_set_mask (guint prop_id)
 491 {
 492   switch (prop_id)
 493     {
 494     case PROP_FAMILY_SET:
 495       return PANGO_FONT_MASK_FAMILY;
 496     case PROP_STYLE_SET:
 497       return PANGO_FONT_MASK_STYLE;
 498     case PROP_VARIANT_SET:
 499       return PANGO_FONT_MASK_VARIANT;
 500     case PROP_WEIGHT_SET:
 501       return PANGO_FONT_MASK_WEIGHT;
 502     case PROP_STRETCH_SET:
 503       return PANGO_FONT_MASK_STRETCH;
 504     case PROP_SIZE_SET:
 505       return PANGO_FONT_MASK_SIZE;
 506     }
 507
 508   return 0;
 509 }
 510
 511 static void
 512 gtk_cell_renderer_text_get_property (GObject        *object,
 513                                      guint           param_id,
 514                                      GValue         *value,
 515                                      GParamSpec     *pspec)
 516 {
 517   GtkCellRendererText *celltext = GTK_CELL_RENDERER_TEXT (object);
 518   GtkCellRendererTextPrivate *priv;
 519
 520   priv = GTK_CELL_RENDERER_TEXT_GET_PRIVATE (object);
 521
 522   switch (param_id)
 523     {
 524     case PROP_TEXT:
 525       g_value_set_string (value, celltext->text);
 526       break;
 527
 528     case PROP_ATTRIBUTES:
 529       g_value_set_boxed (value, celltext->extra_attrs);
 530       break;
 531
 532     case PROP_SINGLE_PARAGRAPH_MODE:
 533       g_value_set_boolean (value, priv->single_paragraph);
 534       break;
 535
 536     case PROP_BACKGROUND_GDK:
 537       {
 538         GdkColor color;
 539
 540         color.red = celltext->background.red;
 541         color.green = celltext->background.green;
 542         color.blue = celltext->background.blue;
 543
 544         g_value_set_boxed (value, &color);
 545       }
 546       break;
 547
 548     case PROP_FOREGROUND_GDK:
 549       {
 550         GdkColor color;
 551
 552         color.red = celltext->foreground.red;
 553         color.green = celltext->foreground.green;
 554         color.blue = celltext->foreground.blue;
 555
 556         g_value_set_boxed (value, &color);
 557       }
 558       break;
 559
 560     case PROP_FONT:
 561       {
 562         /* FIXME GValue imposes a totally gratuitous string copy
 563          * here, we could just hand off string ownership
 564          */
 565         gchar *str = pango_font_description_to_string (celltext->font);
 566         g_value_set_string (value, str);
 567         g_free (str);
 568       }
 569       break;
 570
 571     case PROP_FONT_DESC:
 572       g_value_set_boxed (value, celltext->font);
 573       break;
 574
 575     case PROP_FAMILY:
 576       g_value_set_string (value, pango_font_description_get_family (celltext->font));
 577       break;
 578
 579     case PROP_STYLE:
 580       g_value_set_enum (value, pango_font_description_get_style (celltext->font));
 581       break;
 582
 583     case PROP_VARIANT:
 584       g_value_set_enum (value, pango_font_description_get_variant (celltext->font));
 585       break;
 586
 587     case PROP_WEIGHT:
 588       g_value_set_int (value, pango_font_description_get_weight (celltext->font));
 589       break;
 590
 591     case PROP_STRETCH:
 592       g_value_set_enum (value, pango_font_description_get_stretch (celltext->font));
 593       break;
 594
 595     case PROP_SIZE:
 596       g_value_set_int (value, pango_font_description_get_size (celltext->font));
 597       break;
 598
 599     case PROP_SIZE_POINTS:
 600       g_value_set_double (value, ((double)pango_font_description_get_size (celltext->font)) / (double)PANGO_SCALE);
 601       break;
 602
 603     case PROP_SCALE:
 604       g_value_set_double (value, celltext->font_scale);
 605       break;
 606
 607     case PROP_EDITABLE:
 608       g_value_set_boolean (value, celltext->editable);
 609       break;
 610
 611     case PROP_STRIKETHROUGH:
 612       g_value_set_boolean (value, celltext->strikethrough);
 613       break;
 614
 615     case PROP_UNDERLINE:
 616       g_value_set_enum (value, celltext->underline_style);
 617       break;
 618
 619     case PROP_RISE:
 620       g_value_set_int (value, celltext->rise);
 621       break;
 622
 623     case PROP_LANGUAGE:
 624       g_value_set_string (value, pango_language_to_string (priv->language));
 625       break;
 626
 627     case PROP_BACKGROUND_SET:
 628       g_value_set_boolean (value, celltext->background_set);
 629       break;
 630
 631     case PROP_FOREGROUND_SET:
 632       g_value_set_boolean (value, celltext->foreground_set);
 633       break;
 634
 635     case PROP_FAMILY_SET:
 636     case PROP_STYLE_SET:
 637     case PROP_VARIANT_SET:
 638     case PROP_WEIGHT_SET:
 639     case PROP_STRETCH_SET:
 640     case PROP_SIZE_SET:
 641       {
 642         PangoFontMask mask = get_property_font_set_mask (param_id);
 643         g_value_set_boolean (value, (pango_font_description_get_set_fields (celltext->font) & mask) != 0);
 644
 645         break;
 646       }
 647
 648     case PROP_SCALE_SET:
 649       g_value_set_boolean (value, celltext->scale_set);
 650       break;
 651
 652     case PROP_EDITABLE_SET:
 653       g_value_set_boolean (value, celltext->editable_set);
 654       break;
 655
 656     case PROP_STRIKETHROUGH_SET:
 657       g_value_set_boolean (value, celltext->strikethrough_set);
 658       break;
 659
 660     case PROP_UNDERLINE_SET:
 661       g_value_set_boolean (value, celltext->underline_set);
 662       break;
 663
 664     case  PROP_RISE_SET:
 665       g_value_set_boolean (value, celltext->rise_set);
 666       break;
 667
 668     case PROP_LANGUAGE_SET:
 669       g_value_set_boolean (value, priv->language_set);
 670       break;
 671
 672     case PROP_BACKGROUND:
 673     case PROP_FOREGROUND:
 674     case PROP_MARKUP:
 675     default:
 676       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 677       break;
 678     }
 679 }
 680
 681
 682 static void
 683 set_bg_color (GtkCellRendererText *celltext,
 684               GdkColor            *color)
 685 {
 686   if (color)
 687     {
 688       if (!celltext->background_set)
 689         {
 690           celltext->background_set = TRUE;
 691           g_object_notify (G_OBJECT (celltext), "background_set");
 692         }
 693
 694       celltext->background.red = color->red;
 695       celltext->background.green = color->green;
 696       celltext->background.blue = color->blue;
 697     }
 698   else
 699     {
 700       if (celltext->background_set)
 701         {
 702           celltext->background_set = FALSE;
 703           g_object_notify (G_OBJECT (celltext), "background_set");
 704         }
 705     }
 706 }
 707
 708
 709 static void
 710 set_fg_color (GtkCellRendererText *celltext,
 711               GdkColor            *color)
 712 {
 713   if (color)
 714     {
 715       if (!celltext->foreground_set)
 716         {
 717           celltext->foreground_set = TRUE;
 718           g_object_notify (G_OBJECT (celltext), "foreground_set");
 719         }
 720
 721       celltext->foreground.red = color->red;
 722       celltext->foreground.green = color->green;
 723       celltext->foreground.blue = color->blue;
 724     }
 725   else
 726     {
 727       if (celltext->foreground_set)
 728         {
 729           celltext->foreground_set = FALSE;
 730           g_object_notify (G_OBJECT (celltext), "foreground_set");
 731         }
 732     }
 733 }
 734
 735 static PangoFontMask
 736 set_font_desc_fields (PangoFontDescription *desc,
 737                       PangoFontMask         to_set)
 738 {
 739   PangoFontMask changed_mask = 0;
 740
 741   if (to_set & PANGO_FONT_MASK_FAMILY)
 742     {
 743       const char *family = pango_font_description_get_family (desc);
 744       if (!family)
 745         {
 746           family = "sans";
 747           changed_mask |= PANGO_FONT_MASK_FAMILY;
 748         }
 749
 750       pango_font_description_set_family (desc, family);
 751     }
 752   if (to_set & PANGO_FONT_MASK_STYLE)
 753     pango_font_description_set_style (desc, pango_font_description_get_style (desc));
 754   if (to_set & PANGO_FONT_MASK_VARIANT)
 755     pango_font_description_set_variant (desc, pango_font_description_get_variant (desc));
 756   if (to_set & PANGO_FONT_MASK_WEIGHT)
 757     pango_font_description_set_weight (desc, pango_font_description_get_weight (desc));
 758   if (to_set & PANGO_FONT_MASK_STRETCH)
 759     pango_font_description_set_stretch (desc, pango_font_description_get_stretch (desc));
 760   if (to_set & PANGO_FONT_MASK_SIZE)
 761     {
 762       gint size = pango_font_description_get_size (desc);
 763       if (size <= 0)
 764         {
 765           size = 10 * PANGO_SCALE;
 766           changed_mask |= PANGO_FONT_MASK_SIZE;
 767         }
 768
 769       pango_font_description_set_size (desc, size);
 770     }
 771
 772   return changed_mask;
 773 }
 774
 775 static void
 776 notify_set_changed (GObject       *object,
 777                     PangoFontMask  changed_mask)
 778 {
 779   if (changed_mask & PANGO_FONT_MASK_FAMILY)
 780     g_object_notify (object, "family_set");
 781   if (changed_mask & PANGO_FONT_MASK_STYLE)
 782     g_object_notify (object, "style_set");
 783   if (changed_mask & PANGO_FONT_MASK_VARIANT)
 784     g_object_notify (object, "variant_set");
 785   if (changed_mask & PANGO_FONT_MASK_WEIGHT)
 786     g_object_notify (object, "weight_set");
 787   if (changed_mask & PANGO_FONT_MASK_STRETCH)
 788     g_object_notify (object, "stretch_set");
 789   if (changed_mask & PANGO_FONT_MASK_SIZE)
 790     g_object_notify (object, "size_set");
 791 }
 792
 793 static void
 794 notify_fields_changed (GObject       *object,
 795                        PangoFontMask  changed_mask)
 796 {
 797   if (changed_mask & PANGO_FONT_MASK_FAMILY)
 798     g_object_notify (object, "family");
 799   if (changed_mask & PANGO_FONT_MASK_STYLE)
 800     g_object_notify (object, "style");
 801   if (changed_mask & PANGO_FONT_MASK_VARIANT)
 802     g_object_notify (object, "variant");
 803   if (changed_mask & PANGO_FONT_MASK_WEIGHT)
 804     g_object_notify (object, "weight");
 805   if (changed_mask & PANGO_FONT_MASK_STRETCH)
 806     g_object_notify (object, "stretch");
 807   if (changed_mask & PANGO_FONT_MASK_SIZE)
 808     g_object_notify (object, "size");
 809 }
 810
 811 static void
 812 set_font_description (GtkCellRendererText  *celltext,
 813                       PangoFontDescription *font_desc)
 814 {
 815   GObject *object = G_OBJECT (celltext);
 816   PangoFontDescription *new_font_desc;
 817   PangoFontMask old_mask, new_mask, changed_mask, set_changed_mask;
 818
 819   if (font_desc)
 820     new_font_desc = pango_font_description_copy (font_desc);
 821   else
 822     new_font_desc = pango_font_description_new ();
 823
 824   old_mask = pango_font_description_get_set_fields (celltext->font);
 825   new_mask = pango_font_description_get_set_fields (new_font_desc);
 826
 827   changed_mask = old_mask | new_mask;
 828   set_changed_mask = old_mask ^ new_mask;
 829
 830   pango_font_description_free (celltext->font);
 831   celltext->font = new_font_desc;
 832
 833   g_object_freeze_notify (object);
 834
 835   g_object_notify (object, "font_desc");
 836   g_object_notify (object, "font");
 837
 838   if (changed_mask & PANGO_FONT_MASK_FAMILY)
 839     g_object_notify (object, "family");
 840   if (changed_mask & PANGO_FONT_MASK_STYLE)
 841     g_object_notify (object, "style");
 842   if (changed_mask & PANGO_FONT_MASK_VARIANT)
 843     g_object_notify (object, "variant");
 844   if (changed_mask & PANGO_FONT_MASK_WEIGHT)
 845     g_object_notify (object, "weight");
 846   if (changed_mask & PANGO_FONT_MASK_STRETCH)
 847     g_object_notify (object, "stretch");
 848   if (changed_mask & PANGO_FONT_MASK_SIZE)
 849     {
 850       g_object_notify (object, "size");
 851       g_object_notify (object, "size_points");
 852     }
 853
 854   notify_set_changed (object, set_changed_mask);
 855
 856   g_object_thaw_notify (object);
 857 }
 858
 859 static void
 860 gtk_cell_renderer_text_set_property (GObject      *object,
 861                                      guint         param_id,
 862                                      const GValue *value,
 863                                      GParamSpec   *pspec)
 864 {
 865   GtkCellRendererText *celltext = GTK_CELL_RENDERER_TEXT (object);
 866   GtkCellRendererTextPrivate *priv;
 867
 868   priv = GTK_CELL_RENDERER_TEXT_GET_PRIVATE (object);
 869
 870   switch (param_id)
 871     {
 872     case PROP_TEXT:
 873       if (celltext->text)
 874         g_free (celltext->text);
 875
 876       if (priv->markup_set)
 877         {
 878           if (celltext->extra_attrs)
 879             pango_attr_list_unref (celltext->extra_attrs);
 880           celltext->extra_attrs = NULL;
 881           priv->markup_set = FALSE;
 882         }
 883
 884       celltext->text = g_strdup (g_value_get_string (value));
 885       g_object_notify (object, "text");
 886       break;
 887
 888     case PROP_ATTRIBUTES:
 889       if (celltext->extra_attrs)
 890         pango_attr_list_unref (celltext->extra_attrs);
 891
 892       celltext->extra_attrs = g_value_get_boxed (value);
 893       if (celltext->extra_attrs)
 894         pango_attr_list_ref (celltext->extra_attrs);
 895       break;
 896     case PROP_MARKUP:
 897       {
 898         const gchar *str;
 899         gchar *text = NULL;
 900         GError *error = NULL;
 901         PangoAttrList *attrs = NULL;
 902
 903         str = g_value_get_string (value);
 904         if (str && !pango_parse_markup (str,
 905                                         -1,
 906                                         0,
 907                                         &attrs,
 908                                         &text,
 909                                         NULL,
 910                                         &error))
 911           {
 912             g_warning ("Failed to set cell text from markup due to error parsing markup: %s",
 913                        error->message);
 914             g_error_free (error);
 915             return;
 916           }
 917
 918         if (celltext->text)
 919           g_free (celltext->text);
 920
 921         if (celltext->extra_attrs)
 922           pango_attr_list_unref (celltext->extra_attrs);
 923
 924         celltext->text = text;
 925         celltext->extra_attrs = attrs;
 926         priv->markup_set = TRUE;
 927       }
 928       break;
 929
 930     case PROP_SINGLE_PARAGRAPH_MODE:
 931       priv->single_paragraph = g_value_get_boolean (value);
 932       break;
 933
 934     case PROP_BACKGROUND:
 935       {
 936         GdkColor color;
 937
 938         if (!g_value_get_string (value))
 939           set_bg_color (celltext, NULL);       /* reset to backgrounmd_set to FALSE */
 940         else if (gdk_color_parse (g_value_get_string (value), &color))
 941           set_bg_color (celltext, &color);
 942         else
 943           g_warning ("Don't know color `%s'", g_value_get_string (value));
 944
 945         g_object_notify (object, "background_gdk");
 946       }
 947       break;
 948
 949     case PROP_FOREGROUND:
 950       {
 951         GdkColor color;
 952
 953         if (!g_value_get_string (value))
 954           set_fg_color (celltext, NULL);       /* reset to foreground_set to FALSE */
 955         else if (gdk_color_parse (g_value_get_string (value), &color))
 956           set_fg_color (celltext, &color);
 957         else
 958           g_warning ("Don't know color `%s'", g_value_get_string (value));
 959
 960         g_object_notify (object, "foreground_gdk");
 961       }
 962       break;
 963
 964     case PROP_BACKGROUND_GDK:
 965       /* This notifies the GObject itself. */
 966       set_bg_color (celltext, g_value_get_boxed (value));
 967       break;
 968
 969     case PROP_FOREGROUND_GDK:
 970       /* This notifies the GObject itself. */
 971       set_fg_color (celltext, g_value_get_boxed (value));
 972       break;
 973
 974     case PROP_FONT:
 975       {
 976         PangoFontDescription *font_desc = NULL;
 977         const gchar *name;
 978
 979         name = g_value_get_string (value);
 980
 981         if (name)
 982           font_desc = pango_font_description_from_string (name);
 983
 984         set_font_description (celltext, font_desc);
 985
 986         pango_font_description_free (font_desc);
 987
 988         if (celltext->fixed_height_rows != -1)
 989           celltext->calc_fixed_height = TRUE;
 990       }
 991       break;
 992
 993     case PROP_FONT_DESC:
 994       set_font_description (celltext, g_value_get_boxed (value));
 995
 996       if (celltext->fixed_height_rows != -1)
 997         celltext->calc_fixed_height = TRUE;
 998       break;
 999
1000     case PROP_FAMILY:
1001     case PROP_STYLE:
1002     case PROP_VARIANT:
1003     case PROP_WEIGHT:
1004     case PROP_STRETCH:
1005     case PROP_SIZE:
1006     case PROP_SIZE_POINTS:
1007       {
1008         PangoFontMask old_set_mask = pango_font_description_get_set_fields (celltext->font);
1009
1010         switch (param_id)
1011           {
1012           case PROP_FAMILY:
1013             pango_font_description_set_family (celltext->font,
1014                                                g_value_get_string (value));
1015             break;
1016           case PROP_STYLE:
1017             pango_font_description_set_style (celltext->font,
1018                                               g_value_get_enum (value));
1019             break;
1020           case PROP_VARIANT:
1021             pango_font_description_set_variant (celltext->font,
1022                                                 g_value_get_enum (value));
1023             break;
1024           case PROP_WEIGHT:
1025             pango_font_description_set_weight (celltext->font,
1026                                                g_value_get_int (value));
1027             break;
1028           case PROP_STRETCH:
1029             pango_font_description_set_stretch (celltext->font,
1030                                                 g_value_get_enum (value));
1031             break;
1032           case PROP_SIZE:
1033             pango_font_description_set_size (celltext->font,
1034                                              g_value_get_int (value));
1035             g_object_notify (object, "size_points");
1036             break;
1037           case PROP_SIZE_POINTS:
1038             pango_font_description_set_size (celltext->font,
1039                                              g_value_get_double (value) * PANGO_SCALE);
1040             g_object_notify (object, "size");
1041             break;
1042           }
1043
1044         if (celltext->fixed_height_rows != -1)
1045           celltext->calc_fixed_height = TRUE;
1046
1047         notify_set_changed (object, old_set_mask & pango_font_description_get_set_fields (celltext->font));
1048         g_object_notify (object, "font_desc");
1049         g_object_notify (object, "font");
1050
1051         break;
1052       }
1053
1054     case PROP_SCALE:
1055       celltext->font_scale = g_value_get_double (value);
1056       celltext->scale_set = TRUE;
1057       if (celltext->fixed_height_rows != -1)
1058         celltext->calc_fixed_height = TRUE;
1059       g_object_notify (object, "scale_set");
1060       break;
1061
1062     case PROP_EDITABLE:
1063       celltext->editable = g_value_get_boolean (value);
1064       celltext->editable_set = TRUE;
1065       if (celltext->editable)
1066         GTK_CELL_RENDERER (celltext)->mode = GTK_CELL_RENDERER_MODE_EDITABLE;
1067       else
1068         GTK_CELL_RENDERER (celltext)->mode = GTK_CELL_RENDERER_MODE_INERT;
1069       g_object_notify (object, "editable_set");
1070       break;
1071
1072     case PROP_STRIKETHROUGH:
1073       celltext->strikethrough = g_value_get_boolean (value);
1074       celltext->strikethrough_set = TRUE;
1075       g_object_notify (object, "strikethrough_set");
1076       break;
1077
1078     case PROP_UNDERLINE:
1079       celltext->underline_style = g_value_get_enum (value);
1080       celltext->underline_set = TRUE;
1081       g_object_notify (object, "underline_set");
1082
1083       break;
1084
1085     case PROP_RISE:
1086       celltext->rise = g_value_get_int (value);
1087       celltext->rise_set = TRUE;
1088       g_object_notify (object, "rise_set");
1089       if (celltext->fixed_height_rows != -1)
1090         celltext->calc_fixed_height = TRUE;
1091       break;
1092
1093     case PROP_LANGUAGE:
1094       priv->language_set = TRUE;
1095       if (priv->language)
1096         g_object_unref (priv->language);
1097       priv->language = pango_language_from_string (g_value_get_string (value));
1098       g_object_notify (object, "language_set");
1099       break;
1100
1101     case PROP_BACKGROUND_SET:
1102       celltext->background_set = g_value_get_boolean (value);
1103       break;
1104
1105     case PROP_FOREGROUND_SET:
1106       celltext->foreground_set = g_value_get_boolean (value);
1107       break;
1108
1109     case PROP_FAMILY_SET:
1110     case PROP_STYLE_SET:
1111     case PROP_VARIANT_SET:
1112     case PROP_WEIGHT_SET:
1113     case PROP_STRETCH_SET:
1114     case PROP_SIZE_SET:
1115       if (!g_value_get_boolean (value))
1116         {
1117           pango_font_description_unset_fields (celltext->font,
1118                                                get_property_font_set_mask (param_id));
1119         }
1120       else
1121         {
1122           PangoFontMask changed_mask;
1123
1124           changed_mask = set_font_desc_fields (celltext->font,
1125                                                get_property_font_set_mask (param_id));
1126           notify_fields_changed (G_OBJECT (celltext), changed_mask);
1127         }
1128       break;
1129
1130     case PROP_SCALE_SET:
1131       celltext->scale_set = g_value_get_boolean (value);
1132       break;
1133
1134     case PROP_EDITABLE_SET:
1135       celltext->editable_set = g_value_get_boolean (value);
1136       break;
1137
1138     case PROP_STRIKETHROUGH_SET:
1139       celltext->strikethrough_set = g_value_get_boolean (value);
1140       break;
1141
1142     case PROP_UNDERLINE_SET:
1143       celltext->underline_set = g_value_get_boolean (value);
1144       break;
1145
1146     case PROP_RISE_SET:
1147       celltext->rise_set = g_value_get_boolean (value);
1148       break;
1149
1150     case PROP_LANGUAGE_SET:
1151       priv->language_set = g_value_get_boolean (value);
1152       break;
1153
1154     default:
1155       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
1156       break;
1157     }
1158 }
1159
1160 /**
1161  * gtk_cell_renderer_text_new:
1162  *
1163  * Creates a new #GtkCellRendererText. Adjust how text is drawn using
1164  * object properties. Object properties can be
1165  * set globally (with g_object_set()). Also, with #GtkTreeViewColumn,
1166  * you can bind a property to a value in a #GtkTreeModel. For example,
1167  * you can bind the "text" property on the cell renderer to a string
1168  * value in the model, thus rendering a different string in each row
1169  * of the #GtkTreeView
1170  *
1171  * Return value: the new cell renderer
1172  **/
1173 GtkCellRenderer *
1174 gtk_cell_renderer_text_new (void)
1175 {
1176   return g_object_new (GTK_TYPE_CELL_RENDERER_TEXT, NULL);
1177 }
1178
1179 static void
1180 add_attr (PangoAttrList  *attr_list,
1181           PangoAttribute *attr)
1182 {
1183   attr->start_index = 0;
1184   attr->end_index = G_MAXINT;
1185
1186   pango_attr_list_insert (attr_list, attr);
1187 }
1188
1189 static PangoLayout*
1190 get_layout (GtkCellRendererText *celltext,
1191             GtkWidget           *widget,
1192             gboolean             will_render,
1193             GtkCellRendererState flags)
1194 {
1195   PangoAttrList *attr_list;
1196   PangoLayout *layout;
1197   PangoUnderline uline;
1198   GtkCellRendererTextPrivate *priv;
1199
1200   priv = GTK_CELL_RENDERER_TEXT_GET_PRIVATE (celltext);
1201
1202   layout = gtk_widget_create_pango_layout (widget, celltext->text);
1203
1204   if (celltext->extra_attrs)
1205     attr_list = pango_attr_list_copy (celltext->extra_attrs);
1206   else
1207     attr_list = pango_attr_list_new ();
1208
1209   pango_layout_set_single_paragraph_mode (layout, priv->single_paragraph);
1210
1211   if (will_render)
1212     {
1213       /* Add options that affect appearance but not size */
1214
1215       /* note that background doesn't go here, since it affects
1216        * background_area not the PangoLayout area
1217        */
1218
1219       if (celltext->foreground_set)
1220         {
1221           PangoColor color;
1222
1223           color = celltext->foreground;
1224
1225           add_attr (attr_list,
1226                     pango_attr_foreground_new (color.red, color.green, color.blue));
1227         }
1228
1229       if (celltext->strikethrough_set)
1230         add_attr (attr_list,
1231                   pango_attr_strikethrough_new (celltext->strikethrough));
1232     }
1233
1234   add_attr (attr_list, pango_attr_font_desc_new (celltext->font));
1235
1236   if (celltext->scale_set &&
1237       celltext->font_scale != 1.0)
1238     add_attr (attr_list, pango_attr_scale_new (celltext->font_scale));
1239
1240   if (celltext->underline_set)
1241     uline = celltext->underline_style;
1242   else
1243     uline = PANGO_UNDERLINE_NONE;
1244
1245   if (priv->language_set)
1246     add_attr (attr_list, pango_attr_language_new (priv->language));
1247
1248   if ((flags & GTK_CELL_RENDERER_PRELIT) == GTK_CELL_RENDERER_PRELIT)
1249     {
1250       switch (uline)
1251         {
1252         case PANGO_UNDERLINE_NONE:
1253           uline = PANGO_UNDERLINE_SINGLE;
1254           break;
1255
1256         case PANGO_UNDERLINE_SINGLE:
1257           uline = PANGO_UNDERLINE_DOUBLE;
1258           break;
1259
1260         default:
1261           break;
1262         }
1263     }
1264
1265   if (uline != PANGO_UNDERLINE_NONE)
1266     add_attr (attr_list, pango_attr_underline_new (celltext->underline_style));
1267
1268   if (celltext->rise_set)
1269     add_attr (attr_list, pango_attr_rise_new (celltext->rise));
1270
1271   pango_layout_set_attributes (layout, attr_list);
1272   pango_layout_set_width (layout, -1);
1273
1274   pango_attr_list_unref (attr_list);
1275
1276   return layout;
1277 }
1278
1279 static void
1280 gtk_cell_renderer_text_get_size (GtkCellRenderer *cell,
1281                                  GtkWidget       *widget,
1282                                  GdkRectangle    *cell_area,
1283                                  gint            *x_offset,
1284                                  gint            *y_offset,
1285                                  gint            *width,
1286                                  gint            *height)
1287 {
1288   GtkCellRendererText *celltext = (GtkCellRendererText *) cell;
1289   PangoRectangle rect;
1290   PangoLayout *layout;
1291
1292   if (celltext->calc_fixed_height)
1293     {
1294       PangoContext *context;
1295       PangoFontMetrics *metrics;
1296       PangoFontDescription *font_desc;
1297       gint row_height;
1298
1299       font_desc = pango_font_description_copy (widget->style->font_desc);
1300       pango_font_description_merge (font_desc, celltext->font, TRUE);
1301
1302       if (celltext->scale_set)
1303         pango_font_description_set_size (font_desc,
1304                                          celltext->font_scale * pango_font_description_get_size (font_desc));
1305
1306       context = gtk_widget_get_pango_context (widget);
1307
1308       metrics = pango_context_get_metrics (context,
1309                                            font_desc,
1310                                            pango_context_get_language (context));
1311       row_height = (pango_font_metrics_get_ascent (metrics) +
1312                     pango_font_metrics_get_descent (metrics));
1313       pango_font_metrics_unref (metrics);
1314
1315       pango_font_description_free (font_desc);
1316
1317       gtk_cell_renderer_set_fixed_size (cell,
1318                                         cell->width, 2*cell->ypad +
1319                                         celltext->fixed_height_rows * PANGO_PIXELS (row_height));
1320
1321       if (height)
1322         {
1323           *height = cell->height;
1324           height = NULL;
1325         }
1326       celltext->calc_fixed_height = FALSE;
1327       if (width == NULL)
1328         return;
1329     }
1330   layout = get_layout (celltext, widget, FALSE, 0);
1331   pango_layout_get_pixel_extents (layout, NULL, &rect);
1332
1333   if (width)
1334     *width = GTK_CELL_RENDERER (celltext)->xpad * 2 + rect.width;
1335
1336   if (height)
1337     *height = GTK_CELL_RENDERER (celltext)->ypad * 2 + rect.height;
1338
1339   if (cell_area)
1340     {
1341       if (x_offset)
1342         {
1343           *x_offset = ((gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL) ?
1344                        (1.0 - cell->xalign) : cell->xalign) * (cell_area->width - rect.width - (2 * cell->xpad));
1345           *x_offset = MAX (*x_offset, 0);
1346         }
1347       if (y_offset)
1348         {
1349           *y_offset = cell->yalign * (cell_area->height - rect.height - (2 * cell->ypad));
1350           *y_offset = MAX (*y_offset, 0);
1351         }
1352     }
1353
1354   g_object_unref (layout);
1355 }
1356
1357 static void
1358 gtk_cell_renderer_text_render (GtkCellRenderer      *cell,
1359                                GdkDrawable          *window,
1360                                GtkWidget            *widget,
1361                                GdkRectangle         *background_area,
1362                                GdkRectangle         *cell_area,
1363                                GdkRectangle         *expose_area,
1364                                GtkCellRendererState  flags)
1365
1366 {
1367   GtkCellRendererText *celltext = (GtkCellRendererText *) cell;
1368   PangoLayout *layout;
1369   GtkStateType state;
1370   gint x_offset;
1371   gint y_offset;
1372
1373   layout = get_layout (celltext, widget, TRUE, flags);
1374
1375   gtk_cell_renderer_text_get_size (cell, widget, cell_area, &x_offset, &y_offset, NULL, NULL);
1376
1377   if (!cell->sensitive)
1378     {
1379       state = GTK_STATE_INSENSITIVE;
1380     }
1381   else if ((flags & GTK_CELL_RENDERER_SELECTED) == GTK_CELL_RENDERER_SELECTED)
1382     {
1383       if (GTK_WIDGET_HAS_FOCUS (widget))
1384         state = GTK_STATE_SELECTED;
1385       else
1386         state = GTK_STATE_ACTIVE;
1387     }
1388   else if ((flags & GTK_CELL_RENDERER_PRELIT) == GTK_CELL_RENDERER_PRELIT &&
1389            GTK_WIDGET_STATE (widget) == GTK_STATE_PRELIGHT)
1390     {
1391       state = GTK_STATE_PRELIGHT;
1392     }
1393   else
1394     {
1395       if (GTK_WIDGET_STATE (widget) == GTK_STATE_INSENSITIVE)
1396         state = GTK_STATE_INSENSITIVE;
1397       else
1398         state = GTK_STATE_NORMAL;
1399     }
1400
1401   if (celltext->background_set && state != GTK_STATE_SELECTED)
1402     {
1403       GdkColor color;
1404       GdkGC *gc;
1405
1406       color.red = celltext->background.red;
1407       color.green = celltext->background.green;
1408       color.blue = celltext->background.blue;
1409
1410       gc = gdk_gc_new (window);
1411
1412       gdk_gc_set_rgb_fg_color (gc, &color);
1413
1414       if (expose_area)
1415         gdk_gc_set_clip_rectangle (gc, expose_area);
1416       gdk_draw_rectangle (window,
1417                           gc,
1418                           TRUE,
1419                           background_area->x,
1420                           background_area->y,
1421                           background_area->width,
1422                           background_area->height);
1423       if (expose_area)
1424         gdk_gc_set_clip_rectangle (gc, NULL);
1425       g_object_unref (gc);
1426     }
1427
1428   gtk_paint_layout (widget->style,
1429                     window,
1430                     state,
1431                     TRUE,
1432                     expose_area,
1433                     widget,
1434                     "cellrenderertext",
1435                     cell_area->x + x_offset + cell->xpad,
1436                     cell_area->y + y_offset + cell->ypad,
1437                     layout);
1438
1439   g_object_unref (layout);
1440 }
1441
1442 static void
1443 gtk_cell_renderer_text_editing_done (GtkCellEditable *entry,
1444                                      gpointer         data)
1445 {
1446   const gchar *path;
1447   const gchar *new_text;
1448   GtkCellRendererTextPrivate *priv;
1449
1450   priv = GTK_CELL_RENDERER_TEXT_GET_PRIVATE (data);
1451
1452   if (priv->focus_out_id > 0)
1453     {
1454       g_signal_handler_disconnect (entry, priv->focus_out_id);
1455       priv->focus_out_id = 0;
1456     }
1457
1458   if (GTK_ENTRY (entry)->editing_canceled)
1459     {
1460       gtk_cell_renderer_editing_canceled (GTK_CELL_RENDERER (data));
1461       return;
1462     }
1463
1464   path = g_object_get_data (G_OBJECT (entry), GTK_CELL_RENDERER_TEXT_PATH);
1465   new_text = gtk_entry_get_text (GTK_ENTRY (entry));
1466
1467   g_signal_emit (data, text_cell_renderer_signals[EDITED], 0, path, new_text);
1468 }
1469
1470 static gboolean
1471 gtk_cell_renderer_text_focus_out_event (GtkWidget *entry,
1472                                         GdkEvent  *event,
1473                                         gpointer   data)
1474 {
1475   gtk_cell_renderer_text_editing_done (GTK_CELL_EDITABLE (entry), data);
1476
1477   /* entry needs focus-out-event */
1478   return FALSE;
1479 }
1480
1481 static GtkCellEditable *
1482 gtk_cell_renderer_text_start_editing (GtkCellRenderer      *cell,
1483                                       GdkEvent             *event,
1484                                       GtkWidget            *widget,
1485                                       const gchar          *path,
1486                                       GdkRectangle         *background_area,
1487                                       GdkRectangle         *cell_area,
1488                                       GtkCellRendererState  flags)
1489 {
1490   GtkWidget *entry;
1491   GtkCellRendererText *celltext;
1492   GtkCellRendererTextPrivate *priv;
1493
1494   celltext = GTK_CELL_RENDERER_TEXT (cell);
1495   priv = GTK_CELL_RENDERER_TEXT_GET_PRIVATE (cell);
1496
1497   /* If the cell isn't editable we return NULL. */
1498   if (celltext->editable == FALSE)
1499     return NULL;
1500
1501   entry = g_object_new (GTK_TYPE_ENTRY,
1502                         "has_frame", FALSE,
1503                         NULL);
1504
1505   if (celltext->text)
1506     gtk_entry_set_text (GTK_ENTRY (entry), celltext->text);
1507   g_object_set_data_full (G_OBJECT (entry), GTK_CELL_RENDERER_TEXT_PATH, g_strdup (path), g_free);
1508
1509   gtk_editable_select_region (GTK_EDITABLE (entry), 0, -1);
1510
1511   gtk_widget_show (entry);
1512   g_signal_connect (entry,
1513                     "editing_done",
1514                     G_CALLBACK (gtk_cell_renderer_text_editing_done),
1515                     celltext);
1516   priv->focus_out_id = g_signal_connect (entry, "focus_out_event",
1517                          G_CALLBACK (gtk_cell_renderer_text_focus_out_event),
1518                          celltext);
1519
1520   return GTK_CELL_EDITABLE (entry);
1521
1522 }
1523
1524 /**
1525  * gtk_cell_renderer_text_set_fixed_height_from_font:
1526  * @renderer: A #GtkCellRendererText
1527  * @number_of_rows: Number of rows of text each cell renderer is allocated, or -1
1528  *
1529  * Sets the height of a renderer to explicitly be determined by the "font" and
1530  * "y_pad" property set on it.  Further changes in these properties do not
1531  * affect the height, so they must be accompanied by a subsequent call to this
1532  * function.  Using this function is unflexible, and should really only be used
1533  * if calculating the size of a cell is too slow (ie, a massive number of cells
1534  * displayed).  If @number_of_rows is -1, then the fixed height is unset, and
1535  * the height is determined by the properties again.
1536  **/
1537 void
1538 gtk_cell_renderer_text_set_fixed_height_from_font (GtkCellRendererText *renderer,
1539                                                    gint                 number_of_rows)
1540 {
1541   g_return_if_fail (GTK_IS_CELL_RENDERER_TEXT (renderer));
1542   g_return_if_fail (number_of_rows == -1 || number_of_rows > 0);
1543
1544   if (number_of_rows == -1)
1545     {
1546       gtk_cell_renderer_set_fixed_size (GTK_CELL_RENDERER (renderer),
1547                                         GTK_CELL_RENDERER (renderer)->width,
1548                                         -1);
1549     }
1550   else
1551     {
1552       renderer->fixed_height_rows = number_of_rows;
1553       renderer->calc_fixed_height = TRUE;
1554     }
1555 }