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