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 "gtkalias.h"
  23 #include "gtkcellrenderertext.h"
  24 #include "gtkeditable.h"
  25 #include "gtkentry.h"
  26 #include "gtkmarshalers.h"
  27 #include "gtkintl.h"
  28 #include "gtktreeprivate.h"
  29
  30 static void gtk_cell_renderer_text_init       (GtkCellRendererText      *celltext);
  31 static void gtk_cell_renderer_text_class_init (GtkCellRendererTextClass *class);
  32 static void gtk_cell_renderer_text_finalize   (GObject                  *object);
  33
  34 static void gtk_cell_renderer_text_get_property  (GObject                  *object,
  35                                                   guint                     param_id,
  36                                                   GValue                   *value,
  37                                                   GParamSpec               *pspec);
  38 static void gtk_cell_renderer_text_set_property  (GObject                  *object,
  39                                                   guint                     param_id,
  40                                                   const GValue             *value,
  41                                                   GParamSpec               *pspec);
  42 static void gtk_cell_renderer_text_get_size   (GtkCellRenderer          *cell,
  43                                                GtkWidget                *widget,
  44                                                GdkRectangle             *cell_area,
  45                                                gint                     *x_offset,
  46                                                gint                     *y_offset,
  47                                                gint                     *width,
  48                                                gint                     *height);
  49 static void gtk_cell_renderer_text_render     (GtkCellRenderer          *cell,
  50                                                GdkWindow                *window,
  51                                                GtkWidget                *widget,
  52                                                GdkRectangle             *background_area,
  53                                                GdkRectangle             *cell_area,
  54                                                GdkRectangle             *expose_area,
  55                                                GtkCellRendererState      flags);
  56
  57 static GtkCellEditable *gtk_cell_renderer_text_start_editing (GtkCellRenderer      *cell,
  58                                                               GdkEvent             *event,
  59                                                               GtkWidget            *widget,
  60                                                               const gchar          *path,
  61                                                               GdkRectangle         *background_area,
  62                                                               GdkRectangle         *cell_area,
  63                                                               GtkCellRendererState  flags);
  64
  65 enum {
  66   EDITED,
  67   LAST_SIGNAL
  68 };
  69
  70 enum {
  71   PROP_0,
  72
  73   PROP_TEXT,
  74   PROP_MARKUP,
  75   PROP_ATTRIBUTES,
  76   PROP_SINGLE_PARAGRAPH_MODE,
  77
  78   /* Style args */
  79   PROP_BACKGROUND,
  80   PROP_FOREGROUND,
  81   PROP_BACKGROUND_GDK,
  82   PROP_FOREGROUND_GDK,
  83   PROP_FONT,
  84   PROP_FONT_DESC,
  85   PROP_FAMILY,
  86   PROP_STYLE,
  87   PROP_VARIANT,
  88   PROP_WEIGHT,
  89   PROP_STRETCH,
  90   PROP_SIZE,
  91   PROP_SIZE_POINTS,
  92   PROP_SCALE,
  93   PROP_EDITABLE,
  94   PROP_STRIKETHROUGH,
  95   PROP_UNDERLINE,
  96   PROP_RISE,
  97   PROP_LANGUAGE,
  98   PROP_ELLIPSIZE,
  99
 100   /* Whether-a-style-arg-is-set args */
 101   PROP_BACKGROUND_SET,
 102   PROP_FOREGROUND_SET,
 103   PROP_FAMILY_SET,
 104   PROP_STYLE_SET,
 105   PROP_VARIANT_SET,
 106   PROP_WEIGHT_SET,
 107   PROP_STRETCH_SET,
 108   PROP_SIZE_SET,
 109   PROP_SCALE_SET,
 110   PROP_EDITABLE_SET,
 111   PROP_STRIKETHROUGH_SET,
 112   PROP_UNDERLINE_SET,
 113   PROP_RISE_SET,
 114   PROP_LANGUAGE_SET,
 115   PROP_ELLIPSIZE_SET
 116 };
 117
 118 static gpointer parent_class;
 119 static guint text_cell_renderer_signals [LAST_SIGNAL];
 120
 121 #define GTK_CELL_RENDERER_TEXT_PATH "gtk-cell-renderer-text-path"
 122
 123 #define GTK_CELL_RENDERER_TEXT_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GTK_TYPE_CELL_RENDERER_TEXT, GtkCellRendererTextPrivate))
 124
 125 typedef struct _GtkCellRendererTextPrivate GtkCellRendererTextPrivate;
 126 struct _GtkCellRendererTextPrivate
 127 {
 128   guint single_paragraph : 1;
 129   guint language_set : 1;
 130   guint markup_set : 1;
 131   guint ellipsize_set : 1;
 132
 133   gulong focus_out_id;
 134   PangoLanguage *language;
 135   PangoEllipsizeMode ellipsize;
 136
 137   gulong populate_popup_id;
 138   gulong entry_menu_popdown_timeout;
 139   gboolean in_entry_menu;
 140
 141   GtkWidget *entry;
 142 };
 143
 144
 145 GType
 146 gtk_cell_renderer_text_get_type (void)
 147 {
 148   static GType cell_text_type = 0;
 149
 150   if (!cell_text_type)
 151     {
 152       static const GTypeInfo cell_text_info =
 153       {
 154         sizeof (GtkCellRendererTextClass),
 155         NULL,           /* base_init */
 156         NULL,           /* base_finalize */
 157         (GClassInitFunc) gtk_cell_renderer_text_class_init,
 158         NULL,           /* class_finalize */
 159         NULL,           /* class_data */
 160         sizeof (GtkCellRendererText),
 161         0,              /* n_preallocs */
 162         (GInstanceInitFunc) gtk_cell_renderer_text_init,
 163       };
 164
 165       cell_text_type =
 166         g_type_register_static (GTK_TYPE_CELL_RENDERER, "GtkCellRendererText",
 167                                 &cell_text_info, 0);
 168     }
 169
 170   return cell_text_type;
 171 }
 172
 173 static void
 174 gtk_cell_renderer_text_init (GtkCellRendererText *celltext)
 175 {
 176   GTK_CELL_RENDERER (celltext)->xalign = 0.0;
 177   GTK_CELL_RENDERER (celltext)->yalign = 0.5;
 178   GTK_CELL_RENDERER (celltext)->xpad = 2;
 179   GTK_CELL_RENDERER (celltext)->ypad = 2;
 180   celltext->fixed_height_rows = -1;
 181   celltext->font = pango_font_description_new ();
 182 }
 183
 184 static void
 185 gtk_cell_renderer_text_class_init (GtkCellRendererTextClass *class)
 186 {
 187   GObjectClass *object_class = G_OBJECT_CLASS (class);
 188   GtkCellRendererClass *cell_class = GTK_CELL_RENDERER_CLASS (class);
 189
 190   parent_class = g_type_class_peek_parent (class);
 191
 192   object_class->finalize = gtk_cell_renderer_text_finalize;
 193
 194   object_class->get_property = gtk_cell_renderer_text_get_property;
 195   object_class->set_property = gtk_cell_renderer_text_set_property;
 196
 197   cell_class->get_size = gtk_cell_renderer_text_get_size;
 198   cell_class->render = gtk_cell_renderer_text_render;
 199   cell_class->start_editing = gtk_cell_renderer_text_start_editing;
 200
 201   g_object_class_install_property (object_class,
 202                                    PROP_TEXT,
 203                                    g_param_spec_string ("text",
 204                                                         P_("Text"),
 205                                                         P_("Text to render"),
 206                                                         NULL,
 207                                                         G_PARAM_READWRITE));
 208
 209   g_object_class_install_property (object_class,
 210                                    PROP_MARKUP,
 211                                    g_param_spec_string ("markup",
 212                                                         P_("Markup"),
 213                                                         P_("Marked up text to render"),
 214                                                         NULL,
 215                                                         G_PARAM_WRITABLE));
 216
 217   g_object_class_install_property (object_class,
 218                                    PROP_ATTRIBUTES,
 219                                    g_param_spec_boxed ("attributes",
 220                                                        P_("Attributes"),
 221                                                        P_("A list of style attributes to apply to the text of the renderer"),
 222                                                        PANGO_TYPE_ATTR_LIST,
 223                                                        G_PARAM_READWRITE));
 224
 225   g_object_class_install_property (object_class,
 226                                    PROP_SINGLE_PARAGRAPH_MODE,
 227                                    g_param_spec_boolean ("single_paragraph_mode",
 228                                                          P_("Single Paragraph Mode"),
 229                                                          P_("Whether or not to keep all text in a single paragraph"),
 230                                                          FALSE,
 231                                                          G_PARAM_READWRITE));
 232
 233
 234   g_object_class_install_property (object_class,
 235                                    PROP_BACKGROUND,
 236                                    g_param_spec_string ("background",
 237                                                         P_("Background color name"),
 238                                                         P_("Background color as a string"),
 239                                                         NULL,
 240                                                         G_PARAM_WRITABLE));
 241
 242   g_object_class_install_property (object_class,
 243                                    PROP_BACKGROUND_GDK,
 244                                    g_param_spec_boxed ("background_gdk",
 245                                                        P_("Background color"),
 246                                                        P_("Background color as a GdkColor"),
 247                                                        GDK_TYPE_COLOR,
 248                                                        G_PARAM_READABLE | G_PARAM_WRITABLE));
 249
 250   g_object_class_install_property (object_class,
 251                                    PROP_FOREGROUND,
 252                                    g_param_spec_string ("foreground",
 253                                                         P_("Foreground color name"),
 254                                                         P_("Foreground color as a string"),
 255                                                         NULL,
 256                                                         G_PARAM_WRITABLE));
 257
 258   g_object_class_install_property (object_class,
 259                                    PROP_FOREGROUND_GDK,
 260                                    g_param_spec_boxed ("foreground_gdk",
 261                                                        P_("Foreground color"),
 262                                                        P_("Foreground color as a GdkColor"),
 263                                                        GDK_TYPE_COLOR,
 264                                                        G_PARAM_READABLE | G_PARAM_WRITABLE));
 265
 266
 267   g_object_class_install_property (object_class,
 268                                    PROP_EDITABLE,
 269                                    g_param_spec_boolean ("editable",
 270                                                          P_("Editable"),
 271                                                          P_("Whether the text can be modified by the user"),
 272                                                          FALSE,
 273                                                          G_PARAM_READABLE | G_PARAM_WRITABLE));
 274
 275   g_object_class_install_property (object_class,
 276                                    PROP_FONT,
 277                                    g_param_spec_string ("font",
 278                                                         P_("Font"),
 279                                                         P_("Font description as a string"),
 280                                                         NULL,
 281                                                         G_PARAM_READABLE | G_PARAM_WRITABLE));
 282
 283   g_object_class_install_property (object_class,
 284                                    PROP_FONT_DESC,
 285                                    g_param_spec_boxed ("font_desc",
 286                                                        P_("Font"),
 287                                                        P_("Font description as a PangoFontDescription struct"),
 288                                                        PANGO_TYPE_FONT_DESCRIPTION,
 289                                                        G_PARAM_READABLE | G_PARAM_WRITABLE));
 290
 291
 292   g_object_class_install_property (object_class,
 293                                    PROP_FAMILY,
 294                                    g_param_spec_string ("family",
 295                                                         P_("Font family"),
 296                                                         P_("Name of the font family, e.g. Sans, Helvetica, Times, Monospace"),
 297                                                         NULL,
 298                                                         G_PARAM_READABLE | G_PARAM_WRITABLE));
 299
 300   g_object_class_install_property (object_class,
 301                                    PROP_STYLE,
 302                                    g_param_spec_enum ("style",
 303                                                       P_("Font style"),
 304                                                       P_("Font style"),
 305                                                       PANGO_TYPE_STYLE,
 306                                                       PANGO_STYLE_NORMAL,
 307                                                       G_PARAM_READABLE | G_PARAM_WRITABLE));
 308
 309   g_object_class_install_property (object_class,
 310                                    PROP_VARIANT,
 311                                    g_param_spec_enum ("variant",
 312                                                      P_("Font variant"),
 313                                                      P_("Font variant"),
 314                                                       PANGO_TYPE_VARIANT,
 315                                                       PANGO_VARIANT_NORMAL,
 316                                                       G_PARAM_READABLE | G_PARAM_WRITABLE));
 317
 318   g_object_class_install_property (object_class,
 319                                    PROP_WEIGHT,
 320                                    g_param_spec_int ("weight",
 321                                                      P_("Font weight"),
 322                                                      P_("Font weight"),
 323                                                      0,
 324                                                      G_MAXINT,
 325                                                      PANGO_WEIGHT_NORMAL,
 326                                                      G_PARAM_READABLE | G_PARAM_WRITABLE));
 327
 328    g_object_class_install_property (object_class,
 329                                    PROP_STRETCH,
 330                                    g_param_spec_enum ("stretch",
 331                                                       P_("Font stretch"),
 332                                                       P_("Font stretch"),
 333                                                       PANGO_TYPE_STRETCH,
 334                                                       PANGO_STRETCH_NORMAL,
 335                                                       G_PARAM_READABLE | G_PARAM_WRITABLE));
 336
 337   g_object_class_install_property (object_class,
 338                                    PROP_SIZE,
 339                                    g_param_spec_int ("size",
 340                                                      P_("Font size"),
 341                                                      P_("Font size"),
 342                                                      0,
 343                                                      G_MAXINT,
 344                                                      0,
 345                                                      G_PARAM_READABLE | G_PARAM_WRITABLE));
 346
 347   g_object_class_install_property (object_class,
 348                                    PROP_SIZE_POINTS,
 349                                    g_param_spec_double ("size_points",
 350                                                         P_("Font points"),
 351                                                         P_("Font size in points"),
 352                                                         0.0,
 353                                                         G_MAXDOUBLE,
 354                                                         0.0,
 355                                                         G_PARAM_READABLE | G_PARAM_WRITABLE));
 356
 357   g_object_class_install_property (object_class,
 358                                    PROP_SCALE,
 359                                    g_param_spec_double ("scale",
 360                                                         P_("Font scale"),
 361                                                         P_("Font scaling factor"),
 362                                                         0.0,
 363                                                         G_MAXDOUBLE,
 364                                                         1.0,
 365                                                         G_PARAM_READABLE | G_PARAM_WRITABLE));
 366
 367   g_object_class_install_property (object_class,
 368                                    PROP_RISE,
 369                                    g_param_spec_int ("rise",
 370                                                      P_("Rise"),
 371                                                      P_("Offset of text above the baseline (below the baseline if rise is negative)"),
 372                                                      -G_MAXINT,
 373                                                      G_MAXINT,
 374                                                      0,
 375                                                      G_PARAM_READABLE | G_PARAM_WRITABLE));
 376
 377
 378   g_object_class_install_property (object_class,
 379                                    PROP_STRIKETHROUGH,
 380                                    g_param_spec_boolean ("strikethrough",
 381                                                          P_("Strikethrough"),
 382                                                          P_("Whether to strike through the text"),
 383                                                          FALSE,
 384                                                          G_PARAM_READABLE | G_PARAM_WRITABLE));
 385
 386   g_object_class_install_property (object_class,
 387                                    PROP_UNDERLINE,
 388                                    g_param_spec_enum ("underline",
 389                                                       P_("Underline"),
 390                                                       P_("Style of underline for this text"),
 391                                                       PANGO_TYPE_UNDERLINE,
 392                                                       PANGO_UNDERLINE_NONE,
 393                                                       G_PARAM_READABLE | G_PARAM_WRITABLE));
 394
 395   g_object_class_install_property (object_class,
 396                                    PROP_LANGUAGE,
 397                                    g_param_spec_string ("language",
 398                                                         P_("Language"),
 399                                                         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"),
 400                                                         NULL,
 401                                                         G_PARAM_READWRITE));
 402
 403
 404   g_object_class_install_property (object_class,
 405                                    PROP_ELLIPSIZE,
 406                                    g_param_spec_enum ("ellipsize",
 407                                                       P_("Ellipsize"),
 408                                                       P_("The preferred place to ellipsize the string, if the cell renderer does not have enough room to display the entire string, if at all"),
 409                                                       PANGO_TYPE_ELLIPSIZE_MODE,
 410                                                       PANGO_ELLIPSIZE_NONE,
 411                                                       G_PARAM_READWRITE));
 412
 413   /* Style props are set or not */
 414
 415 #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))
 416
 417   ADD_SET_PROP ("background_set", PROP_BACKGROUND_SET,
 418                 P_("Background set"),
 419                 P_("Whether this tag affects the background color"));
 420
 421   ADD_SET_PROP ("foreground_set", PROP_FOREGROUND_SET,
 422                 P_("Foreground set"),
 423                 P_("Whether this tag affects the foreground color"));
 424
 425   ADD_SET_PROP ("editable_set", PROP_EDITABLE_SET,
 426                 P_("Editability set"),
 427                 P_("Whether this tag affects text editability"));
 428
 429   ADD_SET_PROP ("family_set", PROP_FAMILY_SET,
 430                 P_("Font family set"),
 431                 P_("Whether this tag affects the font family"));
 432
 433   ADD_SET_PROP ("style_set", PROP_STYLE_SET,
 434                 P_("Font style set"),
 435                 P_("Whether this tag affects the font style"));
 436
 437   ADD_SET_PROP ("variant_set", PROP_VARIANT_SET,
 438                 P_("Font variant set"),
 439                 P_("Whether this tag affects the font variant"));
 440
 441   ADD_SET_PROP ("weight_set", PROP_WEIGHT_SET,
 442                 P_("Font weight set"),
 443                 P_("Whether this tag affects the font weight"));
 444
 445   ADD_SET_PROP ("stretch_set", PROP_STRETCH_SET,
 446                 P_("Font stretch set"),
 447                 P_("Whether this tag affects the font stretch"));
 448
 449   ADD_SET_PROP ("size_set", PROP_SIZE_SET,
 450                 P_("Font size set"),
 451                 P_("Whether this tag affects the font size"));
 452
 453   ADD_SET_PROP ("scale_set", PROP_SCALE_SET,
 454                 P_("Font scale set"),
 455                 P_("Whether this tag scales the font size by a factor"));
 456
 457   ADD_SET_PROP ("rise_set", PROP_RISE_SET,
 458                 P_("Rise set"),
 459                 P_("Whether this tag affects the rise"));
 460
 461   ADD_SET_PROP ("strikethrough_set", PROP_STRIKETHROUGH_SET,
 462                 P_("Strikethrough set"),
 463                 P_("Whether this tag affects strikethrough"));
 464
 465   ADD_SET_PROP ("underline_set", PROP_UNDERLINE_SET,
 466                 P_("Underline set"),
 467                 P_("Whether this tag affects underlining"));
 468
 469   ADD_SET_PROP ("language_set", PROP_LANGUAGE_SET,
 470                 P_("Language set"),
 471                 P_("Whether this tag affects the language the text is rendered as"));
 472
 473   ADD_SET_PROP ("ellipsize_set", PROP_ELLIPSIZE_SET,
 474                 P_("Language set"),
 475                 P_("Whether this tag affects the ellipsize mode"));
 476
 477   text_cell_renderer_signals [EDITED] =
 478     g_signal_new ("edited",
 479                   G_OBJECT_CLASS_TYPE (object_class),
 480                   G_SIGNAL_RUN_LAST,
 481                   G_STRUCT_OFFSET (GtkCellRendererTextClass, edited),
 482                   NULL, NULL,
 483                   _gtk_marshal_VOID__STRING_STRING,
 484                   G_TYPE_NONE, 2,
 485                   G_TYPE_STRING,
 486                   G_TYPE_STRING);
 487
 488   g_type_class_add_private (object_class, sizeof (GtkCellRendererTextPrivate));
 489 }
 490
 491 static void
 492 gtk_cell_renderer_text_finalize (GObject *object)
 493 {
 494   GtkCellRendererText *celltext = GTK_CELL_RENDERER_TEXT (object);
 495   GtkCellRendererTextPrivate *priv;
 496
 497   priv = GTK_CELL_RENDERER_TEXT_GET_PRIVATE (object);
 498
 499   pango_font_description_free (celltext->font);
 500
 501   if (celltext->text)
 502     g_free (celltext->text);
 503
 504   if (celltext->extra_attrs)
 505     pango_attr_list_unref (celltext->extra_attrs);
 506
 507   if (priv->language)
 508     g_object_unref (priv->language);
 509
 510   (* G_OBJECT_CLASS (parent_class)->finalize) (object);
 511 }
 512
 513 static PangoFontMask
 514 get_property_font_set_mask (guint prop_id)
 515 {
 516   switch (prop_id)
 517     {
 518     case PROP_FAMILY_SET:
 519       return PANGO_FONT_MASK_FAMILY;
 520     case PROP_STYLE_SET:
 521       return PANGO_FONT_MASK_STYLE;
 522     case PROP_VARIANT_SET:
 523       return PANGO_FONT_MASK_VARIANT;
 524     case PROP_WEIGHT_SET:
 525       return PANGO_FONT_MASK_WEIGHT;
 526     case PROP_STRETCH_SET:
 527       return PANGO_FONT_MASK_STRETCH;
 528     case PROP_SIZE_SET:
 529       return PANGO_FONT_MASK_SIZE;
 530     }
 531
 532   return 0;
 533 }
 534
 535 static void
 536 gtk_cell_renderer_text_get_property (GObject        *object,
 537                                      guint           param_id,
 538                                      GValue         *value,
 539                                      GParamSpec     *pspec)
 540 {
 541   GtkCellRendererText *celltext = GTK_CELL_RENDERER_TEXT (object);
 542   GtkCellRendererTextPrivate *priv;
 543
 544   priv = GTK_CELL_RENDERER_TEXT_GET_PRIVATE (object);
 545
 546   switch (param_id)
 547     {
 548     case PROP_TEXT:
 549       g_value_set_string (value, celltext->text);
 550       break;
 551
 552     case PROP_ATTRIBUTES:
 553       g_value_set_boxed (value, celltext->extra_attrs);
 554       break;
 555
 556     case PROP_SINGLE_PARAGRAPH_MODE:
 557       g_value_set_boolean (value, priv->single_paragraph);
 558       break;
 559
 560     case PROP_BACKGROUND_GDK:
 561       {
 562         GdkColor color;
 563
 564         color.red = celltext->background.red;
 565         color.green = celltext->background.green;
 566         color.blue = celltext->background.blue;
 567
 568         g_value_set_boxed (value, &color);
 569       }
 570       break;
 571
 572     case PROP_FOREGROUND_GDK:
 573       {
 574         GdkColor color;
 575
 576         color.red = celltext->foreground.red;
 577         color.green = celltext->foreground.green;
 578         color.blue = celltext->foreground.blue;
 579
 580         g_value_set_boxed (value, &color);
 581       }
 582       break;
 583
 584     case PROP_FONT:
 585       {
 586         /* FIXME GValue imposes a totally gratuitous string copy
 587          * here, we could just hand off string ownership
 588          */
 589         gchar *str = pango_font_description_to_string (celltext->font);
 590         g_value_set_string (value, str);
 591         g_free (str);
 592       }
 593       break;
 594
 595     case PROP_FONT_DESC:
 596       g_value_set_boxed (value, celltext->font);
 597       break;
 598
 599     case PROP_FAMILY:
 600       g_value_set_string (value, pango_font_description_get_family (celltext->font));
 601       break;
 602
 603     case PROP_STYLE:
 604       g_value_set_enum (value, pango_font_description_get_style (celltext->font));
 605       break;
 606
 607     case PROP_VARIANT:
 608       g_value_set_enum (value, pango_font_description_get_variant (celltext->font));
 609       break;
 610
 611     case PROP_WEIGHT:
 612       g_value_set_int (value, pango_font_description_get_weight (celltext->font));
 613       break;
 614
 615     case PROP_STRETCH:
 616       g_value_set_enum (value, pango_font_description_get_stretch (celltext->font));
 617       break;
 618
 619     case PROP_SIZE:
 620       g_value_set_int (value, pango_font_description_get_size (celltext->font));
 621       break;
 622
 623     case PROP_SIZE_POINTS:
 624       g_value_set_double (value, ((double)pango_font_description_get_size (celltext->font)) / (double)PANGO_SCALE);
 625       break;
 626
 627     case PROP_SCALE:
 628       g_value_set_double (value, celltext->font_scale);
 629       break;
 630
 631     case PROP_EDITABLE:
 632       g_value_set_boolean (value, celltext->editable);
 633       break;
 634
 635     case PROP_STRIKETHROUGH:
 636       g_value_set_boolean (value, celltext->strikethrough);
 637       break;
 638
 639     case PROP_UNDERLINE:
 640       g_value_set_enum (value, celltext->underline_style);
 641       break;
 642
 643     case PROP_RISE:
 644       g_value_set_int (value, celltext->rise);
 645       break;
 646
 647     case PROP_LANGUAGE:
 648       g_value_set_string (value, pango_language_to_string (priv->language));
 649       break;
 650
 651     case PROP_ELLIPSIZE:
 652       g_value_set_enum (value, priv->ellipsize);
 653       break;
 654
 655     case PROP_BACKGROUND_SET:
 656       g_value_set_boolean (value, celltext->background_set);
 657       break;
 658
 659     case PROP_FOREGROUND_SET:
 660       g_value_set_boolean (value, celltext->foreground_set);
 661       break;
 662
 663     case PROP_FAMILY_SET:
 664     case PROP_STYLE_SET:
 665     case PROP_VARIANT_SET:
 666     case PROP_WEIGHT_SET:
 667     case PROP_STRETCH_SET:
 668     case PROP_SIZE_SET:
 669       {
 670         PangoFontMask mask = get_property_font_set_mask (param_id);
 671         g_value_set_boolean (value, (pango_font_description_get_set_fields (celltext->font) & mask) != 0);
 672
 673         break;
 674       }
 675
 676     case PROP_SCALE_SET:
 677       g_value_set_boolean (value, celltext->scale_set);
 678       break;
 679
 680     case PROP_EDITABLE_SET:
 681       g_value_set_boolean (value, celltext->editable_set);
 682       break;
 683
 684     case PROP_STRIKETHROUGH_SET:
 685       g_value_set_boolean (value, celltext->strikethrough_set);
 686       break;
 687
 688     case PROP_UNDERLINE_SET:
 689       g_value_set_boolean (value, celltext->underline_set);
 690       break;
 691
 692     case  PROP_RISE_SET:
 693       g_value_set_boolean (value, celltext->rise_set);
 694       break;
 695
 696     case PROP_LANGUAGE_SET:
 697       g_value_set_boolean (value, priv->language_set);
 698       break;
 699
 700     case PROP_ELLIPSIZE_SET:
 701       g_value_set_boolean (value, priv->ellipsize_set);
 702       break;
 703
 704     case PROP_BACKGROUND:
 705     case PROP_FOREGROUND:
 706     case PROP_MARKUP:
 707     default:
 708       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 709       break;
 710     }
 711 }
 712
 713
 714 static void
 715 set_bg_color (GtkCellRendererText *celltext,
 716               GdkColor            *color)
 717 {
 718   if (color)
 719     {
 720       if (!celltext->background_set)
 721         {
 722           celltext->background_set = TRUE;
 723           g_object_notify (G_OBJECT (celltext), "background_set");
 724         }
 725
 726       celltext->background.red = color->red;
 727       celltext->background.green = color->green;
 728       celltext->background.blue = color->blue;
 729     }
 730   else
 731     {
 732       if (celltext->background_set)
 733         {
 734           celltext->background_set = FALSE;
 735           g_object_notify (G_OBJECT (celltext), "background_set");
 736         }
 737     }
 738 }
 739
 740
 741 static void
 742 set_fg_color (GtkCellRendererText *celltext,
 743               GdkColor            *color)
 744 {
 745   if (color)
 746     {
 747       if (!celltext->foreground_set)
 748         {
 749           celltext->foreground_set = TRUE;
 750           g_object_notify (G_OBJECT (celltext), "foreground_set");
 751         }
 752
 753       celltext->foreground.red = color->red;
 754       celltext->foreground.green = color->green;
 755       celltext->foreground.blue = color->blue;
 756     }
 757   else
 758     {
 759       if (celltext->foreground_set)
 760         {
 761           celltext->foreground_set = FALSE;
 762           g_object_notify (G_OBJECT (celltext), "foreground_set");
 763         }
 764     }
 765 }
 766
 767 static PangoFontMask
 768 set_font_desc_fields (PangoFontDescription *desc,
 769                       PangoFontMask         to_set)
 770 {
 771   PangoFontMask changed_mask = 0;
 772
 773   if (to_set & PANGO_FONT_MASK_FAMILY)
 774     {
 775       const char *family = pango_font_description_get_family (desc);
 776       if (!family)
 777         {
 778           family = "sans";
 779           changed_mask |= PANGO_FONT_MASK_FAMILY;
 780         }
 781
 782       pango_font_description_set_family (desc, family);
 783     }
 784   if (to_set & PANGO_FONT_MASK_STYLE)
 785     pango_font_description_set_style (desc, pango_font_description_get_style (desc));
 786   if (to_set & PANGO_FONT_MASK_VARIANT)
 787     pango_font_description_set_variant (desc, pango_font_description_get_variant (desc));
 788   if (to_set & PANGO_FONT_MASK_WEIGHT)
 789     pango_font_description_set_weight (desc, pango_font_description_get_weight (desc));
 790   if (to_set & PANGO_FONT_MASK_STRETCH)
 791     pango_font_description_set_stretch (desc, pango_font_description_get_stretch (desc));
 792   if (to_set & PANGO_FONT_MASK_SIZE)
 793     {
 794       gint size = pango_font_description_get_size (desc);
 795       if (size <= 0)
 796         {
 797           size = 10 * PANGO_SCALE;
 798           changed_mask |= PANGO_FONT_MASK_SIZE;
 799         }
 800
 801       pango_font_description_set_size (desc, size);
 802     }
 803
 804   return changed_mask;
 805 }
 806
 807 static void
 808 notify_set_changed (GObject       *object,
 809                     PangoFontMask  changed_mask)
 810 {
 811   if (changed_mask & PANGO_FONT_MASK_FAMILY)
 812     g_object_notify (object, "family_set");
 813   if (changed_mask & PANGO_FONT_MASK_STYLE)
 814     g_object_notify (object, "style_set");
 815   if (changed_mask & PANGO_FONT_MASK_VARIANT)
 816     g_object_notify (object, "variant_set");
 817   if (changed_mask & PANGO_FONT_MASK_WEIGHT)
 818     g_object_notify (object, "weight_set");
 819   if (changed_mask & PANGO_FONT_MASK_STRETCH)
 820     g_object_notify (object, "stretch_set");
 821   if (changed_mask & PANGO_FONT_MASK_SIZE)
 822     g_object_notify (object, "size_set");
 823 }
 824
 825 static void
 826 notify_fields_changed (GObject       *object,
 827                        PangoFontMask  changed_mask)
 828 {
 829   if (changed_mask & PANGO_FONT_MASK_FAMILY)
 830     g_object_notify (object, "family");
 831   if (changed_mask & PANGO_FONT_MASK_STYLE)
 832     g_object_notify (object, "style");
 833   if (changed_mask & PANGO_FONT_MASK_VARIANT)
 834     g_object_notify (object, "variant");
 835   if (changed_mask & PANGO_FONT_MASK_WEIGHT)
 836     g_object_notify (object, "weight");
 837   if (changed_mask & PANGO_FONT_MASK_STRETCH)
 838     g_object_notify (object, "stretch");
 839   if (changed_mask & PANGO_FONT_MASK_SIZE)
 840     g_object_notify (object, "size");
 841 }
 842
 843 static void
 844 set_font_description (GtkCellRendererText  *celltext,
 845                       PangoFontDescription *font_desc)
 846 {
 847   GObject *object = G_OBJECT (celltext);
 848   PangoFontDescription *new_font_desc;
 849   PangoFontMask old_mask, new_mask, changed_mask, set_changed_mask;
 850
 851   if (font_desc)
 852     new_font_desc = pango_font_description_copy (font_desc);
 853   else
 854     new_font_desc = pango_font_description_new ();
 855
 856   old_mask = pango_font_description_get_set_fields (celltext->font);
 857   new_mask = pango_font_description_get_set_fields (new_font_desc);
 858
 859   changed_mask = old_mask | new_mask;
 860   set_changed_mask = old_mask ^ new_mask;
 861
 862   pango_font_description_free (celltext->font);
 863   celltext->font = new_font_desc;
 864
 865   g_object_freeze_notify (object);
 866
 867   g_object_notify (object, "font_desc");
 868   g_object_notify (object, "font");
 869
 870   if (changed_mask & PANGO_FONT_MASK_FAMILY)
 871     g_object_notify (object, "family");
 872   if (changed_mask & PANGO_FONT_MASK_STYLE)
 873     g_object_notify (object, "style");
 874   if (changed_mask & PANGO_FONT_MASK_VARIANT)
 875     g_object_notify (object, "variant");
 876   if (changed_mask & PANGO_FONT_MASK_WEIGHT)
 877     g_object_notify (object, "weight");
 878   if (changed_mask & PANGO_FONT_MASK_STRETCH)
 879     g_object_notify (object, "stretch");
 880   if (changed_mask & PANGO_FONT_MASK_SIZE)
 881     {
 882       g_object_notify (object, "size");
 883       g_object_notify (object, "size_points");
 884     }
 885
 886   notify_set_changed (object, set_changed_mask);
 887
 888   g_object_thaw_notify (object);
 889 }
 890
 891 static void
 892 gtk_cell_renderer_text_set_property (GObject      *object,
 893                                      guint         param_id,
 894                                      const GValue *value,
 895                                      GParamSpec   *pspec)
 896 {
 897   GtkCellRendererText *celltext = GTK_CELL_RENDERER_TEXT (object);
 898   GtkCellRendererTextPrivate *priv;
 899
 900   priv = GTK_CELL_RENDERER_TEXT_GET_PRIVATE (object);
 901
 902   switch (param_id)
 903     {
 904     case PROP_TEXT:
 905       if (celltext->text)
 906         g_free (celltext->text);
 907
 908       if (priv->markup_set)
 909         {
 910           if (celltext->extra_attrs)
 911             pango_attr_list_unref (celltext->extra_attrs);
 912           celltext->extra_attrs = NULL;
 913           priv->markup_set = FALSE;
 914         }
 915
 916       celltext->text = g_strdup (g_value_get_string (value));
 917       g_object_notify (object, "text");
 918       break;
 919
 920     case PROP_ATTRIBUTES:
 921       if (celltext->extra_attrs)
 922         pango_attr_list_unref (celltext->extra_attrs);
 923
 924       celltext->extra_attrs = g_value_get_boxed (value);
 925       if (celltext->extra_attrs)
 926         pango_attr_list_ref (celltext->extra_attrs);
 927       break;
 928     case PROP_MARKUP:
 929       {
 930         const gchar *str;
 931         gchar *text = NULL;
 932         GError *error = NULL;
 933         PangoAttrList *attrs = NULL;
 934
 935         str = g_value_get_string (value);
 936         if (str && !pango_parse_markup (str,
 937                                         -1,
 938                                         0,
 939                                         &attrs,
 940                                         &text,
 941                                         NULL,
 942                                         &error))
 943           {
 944             g_warning ("Failed to set cell text from markup due to error parsing markup: %s",
 945                        error->message);
 946             g_error_free (error);
 947             return;
 948           }
 949
 950         if (celltext->text)
 951           g_free (celltext->text);
 952
 953         if (celltext->extra_attrs)
 954           pango_attr_list_unref (celltext->extra_attrs);
 955
 956         celltext->text = text;
 957         celltext->extra_attrs = attrs;
 958         priv->markup_set = TRUE;
 959       }
 960       break;
 961
 962     case PROP_SINGLE_PARAGRAPH_MODE:
 963       priv->single_paragraph = g_value_get_boolean (value);
 964       break;
 965
 966     case PROP_BACKGROUND:
 967       {
 968         GdkColor color;
 969
 970         if (!g_value_get_string (value))
 971           set_bg_color (celltext, NULL);       /* reset to backgrounmd_set to FALSE */
 972         else if (gdk_color_parse (g_value_get_string (value), &color))
 973           set_bg_color (celltext, &color);
 974         else
 975           g_warning ("Don't know color `%s'", g_value_get_string (value));
 976
 977         g_object_notify (object, "background_gdk");
 978       }
 979       break;
 980
 981     case PROP_FOREGROUND:
 982       {
 983         GdkColor color;
 984
 985         if (!g_value_get_string (value))
 986           set_fg_color (celltext, NULL);       /* reset to foreground_set to FALSE */
 987         else if (gdk_color_parse (g_value_get_string (value), &color))
 988           set_fg_color (celltext, &color);
 989         else
 990           g_warning ("Don't know color `%s'", g_value_get_string (value));
 991
 992         g_object_notify (object, "foreground_gdk");
 993       }
 994       break;
 995
 996     case PROP_BACKGROUND_GDK:
 997       /* This notifies the GObject itself. */
 998       set_bg_color (celltext, g_value_get_boxed (value));
 999       break;
1000
1001     case PROP_FOREGROUND_GDK:
1002       /* This notifies the GObject itself. */
1003       set_fg_color (celltext, g_value_get_boxed (value));
1004       break;
1005
1006     case PROP_FONT:
1007       {
1008         PangoFontDescription *font_desc = NULL;
1009         const gchar *name;
1010
1011         name = g_value_get_string (value);
1012
1013         if (name)
1014           font_desc = pango_font_description_from_string (name);
1015
1016         set_font_description (celltext, font_desc);
1017
1018         pango_font_description_free (font_desc);
1019
1020         if (celltext->fixed_height_rows != -1)
1021           celltext->calc_fixed_height = TRUE;
1022       }
1023       break;
1024
1025     case PROP_FONT_DESC:
1026       set_font_description (celltext, g_value_get_boxed (value));
1027
1028       if (celltext->fixed_height_rows != -1)
1029         celltext->calc_fixed_height = TRUE;
1030       break;
1031
1032     case PROP_FAMILY:
1033     case PROP_STYLE:
1034     case PROP_VARIANT:
1035     case PROP_WEIGHT:
1036     case PROP_STRETCH:
1037     case PROP_SIZE:
1038     case PROP_SIZE_POINTS:
1039       {
1040         PangoFontMask old_set_mask = pango_font_description_get_set_fields (celltext->font);
1041
1042         switch (param_id)
1043           {
1044           case PROP_FAMILY:
1045             pango_font_description_set_family (celltext->font,
1046                                                g_value_get_string (value));
1047             break;
1048           case PROP_STYLE:
1049             pango_font_description_set_style (celltext->font,
1050                                               g_value_get_enum (value));
1051             break;
1052           case PROP_VARIANT:
1053             pango_font_description_set_variant (celltext->font,
1054                                                 g_value_get_enum (value));
1055             break;
1056           case PROP_WEIGHT:
1057             pango_font_description_set_weight (celltext->font,
1058                                                g_value_get_int (value));
1059             break;
1060           case PROP_STRETCH:
1061             pango_font_description_set_stretch (celltext->font,
1062                                                 g_value_get_enum (value));
1063             break;
1064           case PROP_SIZE:
1065             pango_font_description_set_size (celltext->font,
1066                                              g_value_get_int (value));
1067             g_object_notify (object, "size_points");
1068             break;
1069           case PROP_SIZE_POINTS:
1070             pango_font_description_set_size (celltext->font,
1071                                              g_value_get_double (value) * PANGO_SCALE);
1072             g_object_notify (object, "size");
1073             break;
1074           }
1075
1076         if (celltext->fixed_height_rows != -1)
1077           celltext->calc_fixed_height = TRUE;
1078
1079         notify_set_changed (object, old_set_mask & pango_font_description_get_set_fields (celltext->font));
1080         g_object_notify (object, "font_desc");
1081         g_object_notify (object, "font");
1082
1083         break;
1084       }
1085
1086     case PROP_SCALE:
1087       celltext->font_scale = g_value_get_double (value);
1088       celltext->scale_set = TRUE;
1089       if (celltext->fixed_height_rows != -1)
1090         celltext->calc_fixed_height = TRUE;
1091       g_object_notify (object, "scale_set");
1092       break;
1093
1094     case PROP_EDITABLE:
1095       celltext->editable = g_value_get_boolean (value);
1096       celltext->editable_set = TRUE;
1097       if (celltext->editable)
1098         GTK_CELL_RENDERER (celltext)->mode = GTK_CELL_RENDERER_MODE_EDITABLE;
1099       else
1100         GTK_CELL_RENDERER (celltext)->mode = GTK_CELL_RENDERER_MODE_INERT;
1101       g_object_notify (object, "editable_set");
1102       break;
1103
1104     case PROP_STRIKETHROUGH:
1105       celltext->strikethrough = g_value_get_boolean (value);
1106       celltext->strikethrough_set = TRUE;
1107       g_object_notify (object, "strikethrough_set");
1108       break;
1109
1110     case PROP_UNDERLINE:
1111       celltext->underline_style = g_value_get_enum (value);
1112       celltext->underline_set = TRUE;
1113       g_object_notify (object, "underline_set");
1114
1115       break;
1116
1117     case PROP_RISE:
1118       celltext->rise = g_value_get_int (value);
1119       celltext->rise_set = TRUE;
1120       g_object_notify (object, "rise_set");
1121       if (celltext->fixed_height_rows != -1)
1122         celltext->calc_fixed_height = TRUE;
1123       break;
1124
1125     case PROP_LANGUAGE:
1126       priv->language_set = TRUE;
1127       if (priv->language)
1128         g_object_unref (priv->language);
1129       priv->language = pango_language_from_string (g_value_get_string (value));
1130       g_object_notify (object, "language_set");
1131       break;
1132
1133     case PROP_ELLIPSIZE:
1134       priv->ellipsize = g_value_get_enum (value);
1135       priv->ellipsize_set = TRUE;
1136       g_object_notify (object, "ellipsize_set");
1137       break;
1138
1139     case PROP_BACKGROUND_SET:
1140       celltext->background_set = g_value_get_boolean (value);
1141       break;
1142
1143     case PROP_FOREGROUND_SET:
1144       celltext->foreground_set = g_value_get_boolean (value);
1145       break;
1146
1147     case PROP_FAMILY_SET:
1148     case PROP_STYLE_SET:
1149     case PROP_VARIANT_SET:
1150     case PROP_WEIGHT_SET:
1151     case PROP_STRETCH_SET:
1152     case PROP_SIZE_SET:
1153       if (!g_value_get_boolean (value))
1154         {
1155           pango_font_description_unset_fields (celltext->font,
1156                                                get_property_font_set_mask (param_id));
1157         }
1158       else
1159         {
1160           PangoFontMask changed_mask;
1161
1162           changed_mask = set_font_desc_fields (celltext->font,
1163                                                get_property_font_set_mask (param_id));
1164           notify_fields_changed (G_OBJECT (celltext), changed_mask);
1165         }
1166       break;
1167
1168     case PROP_SCALE_SET:
1169       celltext->scale_set = g_value_get_boolean (value);
1170       break;
1171
1172     case PROP_EDITABLE_SET:
1173       celltext->editable_set = g_value_get_boolean (value);
1174       break;
1175
1176     case PROP_STRIKETHROUGH_SET:
1177       celltext->strikethrough_set = g_value_get_boolean (value);
1178       break;
1179
1180     case PROP_UNDERLINE_SET:
1181       celltext->underline_set = g_value_get_boolean (value);
1182       break;
1183
1184     case PROP_RISE_SET:
1185       celltext->rise_set = g_value_get_boolean (value);
1186       break;
1187
1188     case PROP_LANGUAGE_SET:
1189       priv->language_set = g_value_get_boolean (value);
1190       break;
1191
1192     case PROP_ELLIPSIZE_SET:
1193       priv->ellipsize_set = g_value_get_enum (value);
1194       break;
1195
1196     default:
1197       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
1198       break;
1199     }
1200 }
1201
1202 /**
1203  * gtk_cell_renderer_text_new:
1204  *
1205  * Creates a new #GtkCellRendererText. Adjust how text is drawn using
1206  * object properties. Object properties can be
1207  * set globally (with g_object_set()). Also, with #GtkTreeViewColumn,
1208  * you can bind a property to a value in a #GtkTreeModel. For example,
1209  * you can bind the "text" property on the cell renderer to a string
1210  * value in the model, thus rendering a different string in each row
1211  * of the #GtkTreeView
1212  *
1213  * Return value: the new cell renderer
1214  **/
1215 GtkCellRenderer *
1216 gtk_cell_renderer_text_new (void)
1217 {
1218   return g_object_new (GTK_TYPE_CELL_RENDERER_TEXT, NULL);
1219 }
1220
1221 static void
1222 add_attr (PangoAttrList  *attr_list,
1223           PangoAttribute *attr)
1224 {
1225   attr->start_index = 0;
1226   attr->end_index = G_MAXINT;
1227
1228   pango_attr_list_insert (attr_list, attr);
1229 }
1230
1231 static PangoLayout*
1232 get_layout (GtkCellRendererText *celltext,
1233             GtkWidget           *widget,
1234             gboolean             will_render,
1235             GtkCellRendererState flags)
1236 {
1237   PangoAttrList *attr_list;
1238   PangoLayout *layout;
1239   PangoUnderline uline;
1240   GtkCellRendererTextPrivate *priv;
1241
1242   priv = GTK_CELL_RENDERER_TEXT_GET_PRIVATE (celltext);
1243
1244   layout = gtk_widget_create_pango_layout (widget, celltext->text);
1245
1246   if (celltext->extra_attrs)
1247     attr_list = pango_attr_list_copy (celltext->extra_attrs);
1248   else
1249     attr_list = pango_attr_list_new ();
1250
1251   pango_layout_set_single_paragraph_mode (layout, priv->single_paragraph);
1252
1253   if (will_render)
1254     {
1255       /* Add options that affect appearance but not size */
1256
1257       /* note that background doesn't go here, since it affects
1258        * background_area not the PangoLayout area
1259        */
1260
1261       if (celltext->foreground_set)
1262         {
1263           PangoColor color;
1264
1265           color = celltext->foreground;
1266
1267           add_attr (attr_list,
1268                     pango_attr_foreground_new (color.red, color.green, color.blue));
1269         }
1270
1271       if (celltext->strikethrough_set)
1272         add_attr (attr_list,
1273                   pango_attr_strikethrough_new (celltext->strikethrough));
1274     }
1275
1276   add_attr (attr_list, pango_attr_font_desc_new (celltext->font));
1277
1278   if (celltext->scale_set &&
1279       celltext->font_scale != 1.0)
1280     add_attr (attr_list, pango_attr_scale_new (celltext->font_scale));
1281
1282   if (celltext->underline_set)
1283     uline = celltext->underline_style;
1284   else
1285     uline = PANGO_UNDERLINE_NONE;
1286
1287   if (priv->language_set)
1288     add_attr (attr_list, pango_attr_language_new (priv->language));
1289
1290   if ((flags & GTK_CELL_RENDERER_PRELIT) == GTK_CELL_RENDERER_PRELIT)
1291     {
1292       switch (uline)
1293         {
1294         case PANGO_UNDERLINE_NONE:
1295           uline = PANGO_UNDERLINE_SINGLE;
1296           break;
1297
1298         case PANGO_UNDERLINE_SINGLE:
1299           uline = PANGO_UNDERLINE_DOUBLE;
1300           break;
1301
1302         default:
1303           break;
1304         }
1305     }
1306
1307   if (uline != PANGO_UNDERLINE_NONE)
1308     add_attr (attr_list, pango_attr_underline_new (celltext->underline_style));
1309
1310   if (celltext->rise_set)
1311     add_attr (attr_list, pango_attr_rise_new (celltext->rise));
1312
1313   if (priv->ellipsize_set)
1314     pango_layout_set_ellipsize (layout, priv->ellipsize);
1315   else
1316     pango_layout_set_ellipsize (layout, PANGO_ELLIPSIZE_NONE);
1317
1318   pango_layout_set_attributes (layout, attr_list);
1319   pango_layout_set_width (layout, -1);
1320
1321   pango_attr_list_unref (attr_list);
1322
1323   return layout;
1324 }
1325
1326 static void
1327 gtk_cell_renderer_text_get_size (GtkCellRenderer *cell,
1328                                  GtkWidget       *widget,
1329                                  GdkRectangle    *cell_area,
1330                                  gint            *x_offset,
1331                                  gint            *y_offset,
1332                                  gint            *width,
1333                                  gint            *height)
1334 {
1335   GtkCellRendererText *celltext = (GtkCellRendererText *) cell;
1336   PangoRectangle rect;
1337   PangoLayout *layout;
1338   GtkCellRendererTextPrivate *priv;
1339
1340   priv = GTK_CELL_RENDERER_TEXT_GET_PRIVATE (cell);
1341
1342   if (celltext->calc_fixed_height)
1343     {
1344       PangoContext *context;
1345       PangoFontMetrics *metrics;
1346       PangoFontDescription *font_desc;
1347       gint row_height;
1348
1349       font_desc = pango_font_description_copy (widget->style->font_desc);
1350       pango_font_description_merge (font_desc, celltext->font, TRUE);
1351
1352       if (celltext->scale_set)
1353         pango_font_description_set_size (font_desc,
1354                                          celltext->font_scale * pango_font_description_get_size (font_desc));
1355
1356       context = gtk_widget_get_pango_context (widget);
1357
1358       metrics = pango_context_get_metrics (context,
1359                                            font_desc,
1360                                            pango_context_get_language (context));
1361       row_height = (pango_font_metrics_get_ascent (metrics) +
1362                     pango_font_metrics_get_descent (metrics));
1363       pango_font_metrics_unref (metrics);
1364
1365       pango_font_description_free (font_desc);
1366
1367       gtk_cell_renderer_set_fixed_size (cell,
1368                                         cell->width, 2*cell->ypad +
1369                                         celltext->fixed_height_rows * PANGO_PIXELS (row_height));
1370
1371       if (height)
1372         {
1373           *height = cell->height;
1374           height = NULL;
1375         }
1376       celltext->calc_fixed_height = FALSE;
1377       if (width == NULL)
1378         return;
1379     }
1380
1381   layout = get_layout (celltext, widget, FALSE, 0);
1382
1383   pango_layout_get_pixel_extents (layout, NULL, &rect);
1384
1385   if (height)
1386     *height = GTK_CELL_RENDERER (celltext)->ypad * 2 + rect.height;
1387
1388   /* The minimum size for ellipsized labels is ~ 3 chars */
1389   if (width)
1390     {
1391       if (priv->ellipsize)
1392         {
1393           PangoContext *context;
1394           PangoFontMetrics *metrics;
1395           gint char_width;
1396
1397           context = pango_layout_get_context (layout);
1398           metrics = pango_context_get_metrics (context, widget->style->font_desc, NULL);
1399
1400           char_width = pango_font_metrics_get_approximate_char_width (metrics);
1401           pango_font_metrics_unref (metrics);
1402
1403           *width += (PANGO_PIXELS (char_width) * 3);
1404         }
1405       else
1406         {
1407           *width = GTK_CELL_RENDERER (celltext)->xpad * 2 + rect.width;
1408         }
1409     }
1410
1411   if (cell_area)
1412     {
1413       if (x_offset)
1414         {
1415           *x_offset = ((gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL) ?
1416                        (1.0 - cell->xalign) : cell->xalign) * (cell_area->width - rect.width - (2 * cell->xpad));
1417           if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
1418             *x_offset -= rect.width;
1419           *x_offset = MAX (*x_offset, 0);
1420         }
1421       if (y_offset)
1422         {
1423           *y_offset = cell->yalign * (cell_area->height - rect.height - (2 * cell->ypad));
1424           *y_offset = MAX (*y_offset, 0);
1425         }
1426     }
1427
1428   g_object_unref (layout);
1429 }
1430
1431 static void
1432 gtk_cell_renderer_text_render (GtkCellRenderer      *cell,
1433                                GdkDrawable          *window,
1434                                GtkWidget            *widget,
1435                                GdkRectangle         *background_area,
1436                                GdkRectangle         *cell_area,
1437                                GdkRectangle         *expose_area,
1438                                GtkCellRendererState  flags)
1439
1440 {
1441   GtkCellRendererText *celltext = (GtkCellRendererText *) cell;
1442   PangoLayout *layout;
1443   GtkStateType state;
1444   gint x_offset;
1445   gint y_offset;
1446   GtkCellRendererTextPrivate *priv;
1447
1448   priv = GTK_CELL_RENDERER_TEXT_GET_PRIVATE (cell);
1449
1450   layout = get_layout (celltext, widget, TRUE, flags);
1451
1452   gtk_cell_renderer_text_get_size (cell, widget, cell_area, &x_offset, &y_offset, NULL, NULL);
1453
1454   if (!cell->sensitive)
1455     {
1456       state = GTK_STATE_INSENSITIVE;
1457     }
1458   else if ((flags & GTK_CELL_RENDERER_SELECTED) == GTK_CELL_RENDERER_SELECTED)
1459     {
1460       if (GTK_WIDGET_HAS_FOCUS (widget))
1461         state = GTK_STATE_SELECTED;
1462       else
1463         state = GTK_STATE_ACTIVE;
1464     }
1465   else if ((flags & GTK_CELL_RENDERER_PRELIT) == GTK_CELL_RENDERER_PRELIT &&
1466            GTK_WIDGET_STATE (widget) == GTK_STATE_PRELIGHT)
1467     {
1468       state = GTK_STATE_PRELIGHT;
1469     }
1470   else
1471     {
1472       if (GTK_WIDGET_STATE (widget) == GTK_STATE_INSENSITIVE)
1473         state = GTK_STATE_INSENSITIVE;
1474       else
1475         state = GTK_STATE_NORMAL;
1476     }
1477
1478   if (celltext->background_set && state != GTK_STATE_SELECTED)
1479     {
1480       GdkColor color;
1481       GdkGC *gc;
1482
1483       color.red = celltext->background.red;
1484       color.green = celltext->background.green;
1485       color.blue = celltext->background.blue;
1486
1487       gc = gdk_gc_new (window);
1488
1489       gdk_gc_set_rgb_fg_color (gc, &color);
1490
1491       if (expose_area)
1492         gdk_gc_set_clip_rectangle (gc, expose_area);
1493       gdk_draw_rectangle (window,
1494                           gc,
1495                           TRUE,
1496                           background_area->x,
1497                           background_area->y,
1498                           background_area->width,
1499                           background_area->height);
1500       if (expose_area)
1501         gdk_gc_set_clip_rectangle (gc, NULL);
1502       g_object_unref (gc);
1503     }
1504
1505   if (priv->ellipsize)
1506     pango_layout_set_width (layout, cell_area->width * PANGO_SCALE);
1507   else
1508     pango_layout_set_width (layout, -1);
1509
1510   gtk_paint_layout (widget->style,
1511                     window,
1512                     state,
1513                     TRUE,
1514                     expose_area,
1515                     widget,
1516                     "cellrenderertext",
1517                     cell_area->x + x_offset + cell->xpad,
1518                     cell_area->y + y_offset + cell->ypad,
1519                     layout);
1520
1521   g_object_unref (layout);
1522 }
1523
1524 static void
1525 gtk_cell_renderer_text_editing_done (GtkCellEditable *entry,
1526                                      gpointer         data)
1527 {
1528   const gchar *path;
1529   const gchar *new_text;
1530   GtkCellRendererTextPrivate *priv;
1531
1532   priv = GTK_CELL_RENDERER_TEXT_GET_PRIVATE (data);
1533
1534   priv->entry = NULL;
1535
1536   if (priv->focus_out_id > 0)
1537     {
1538       g_signal_handler_disconnect (entry, priv->focus_out_id);
1539       priv->focus_out_id = 0;
1540     }
1541
1542   if (priv->populate_popup_id > 0)
1543     {
1544       g_signal_handler_disconnect (entry, priv->populate_popup_id);
1545       priv->populate_popup_id = 0;
1546     }
1547
1548   if (priv->entry_menu_popdown_timeout)
1549     {
1550       g_source_remove (priv->entry_menu_popdown_timeout);
1551       priv->entry_menu_popdown_timeout = 0;
1552     }
1553
1554   if (GTK_ENTRY (entry)->editing_canceled)
1555     {
1556       gtk_cell_renderer_editing_canceled (GTK_CELL_RENDERER (data));
1557       return;
1558     }
1559
1560   path = g_object_get_data (G_OBJECT (entry), GTK_CELL_RENDERER_TEXT_PATH);
1561   new_text = gtk_entry_get_text (GTK_ENTRY (entry));
1562
1563   g_signal_emit (data, text_cell_renderer_signals[EDITED], 0, path, new_text);
1564 }
1565
1566 static gboolean
1567 popdown_timeout (gpointer data)
1568 {
1569   GtkCellRendererTextPrivate *priv;
1570
1571   GDK_THREADS_ENTER ();
1572
1573   priv = GTK_CELL_RENDERER_TEXT_GET_PRIVATE (data);
1574
1575   priv->entry_menu_popdown_timeout = 0;
1576
1577   if (!GTK_WIDGET_HAS_FOCUS (priv->entry))
1578     gtk_cell_renderer_text_editing_done (GTK_CELL_EDITABLE (priv->entry), data);
1579
1580   GDK_THREADS_LEAVE ();
1581
1582   return FALSE;
1583 }
1584
1585 static void
1586 gtk_cell_renderer_text_popup_unmap (GtkMenu *menu,
1587                                     gpointer data)
1588 {
1589   GtkCellRendererTextPrivate *priv;
1590
1591   priv = GTK_CELL_RENDERER_TEXT_GET_PRIVATE (data);
1592
1593   priv->in_entry_menu = FALSE;
1594
1595   if (priv->entry_menu_popdown_timeout)
1596     return;
1597
1598   priv->entry_menu_popdown_timeout = g_timeout_add (500, popdown_timeout,
1599                                                     data);
1600 }
1601
1602 static void
1603 gtk_cell_renderer_text_populate_popup (GtkEntry *entry,
1604                                        GtkMenu  *menu,
1605                                        gpointer  data)
1606 {
1607   GtkCellRendererTextPrivate *priv;
1608
1609   priv = GTK_CELL_RENDERER_TEXT_GET_PRIVATE (data);
1610
1611   if (priv->entry_menu_popdown_timeout)
1612     {
1613       g_source_remove (priv->entry_menu_popdown_timeout);
1614       priv->entry_menu_popdown_timeout = 0;
1615     }
1616
1617   priv->in_entry_menu = TRUE;
1618
1619   g_signal_connect (menu, "unmap",
1620                     G_CALLBACK (gtk_cell_renderer_text_popup_unmap), data);
1621 }
1622
1623 static gboolean
1624 gtk_cell_renderer_text_focus_out_event (GtkWidget *entry,
1625                                         GdkEvent  *event,
1626                                         gpointer   data)
1627 {
1628   GtkCellRendererTextPrivate *priv;
1629
1630   priv = GTK_CELL_RENDERER_TEXT_GET_PRIVATE (data);
1631
1632   if (priv->in_entry_menu)
1633     return FALSE;
1634
1635   gtk_cell_renderer_text_editing_done (GTK_CELL_EDITABLE (entry), data);
1636
1637   /* entry needs focus-out-event */
1638   return FALSE;
1639 }
1640
1641 static GtkCellEditable *
1642 gtk_cell_renderer_text_start_editing (GtkCellRenderer      *cell,
1643                                       GdkEvent             *event,
1644                                       GtkWidget            *widget,
1645                                       const gchar          *path,
1646                                       GdkRectangle         *background_area,
1647                                       GdkRectangle         *cell_area,
1648                                       GtkCellRendererState  flags)
1649 {
1650   GtkCellRendererText *celltext;
1651   GtkCellRendererTextPrivate *priv;
1652
1653   celltext = GTK_CELL_RENDERER_TEXT (cell);
1654   priv = GTK_CELL_RENDERER_TEXT_GET_PRIVATE (cell);
1655
1656   /* If the cell isn't editable we return NULL. */
1657   if (celltext->editable == FALSE)
1658     return NULL;
1659
1660   priv->entry = g_object_new (GTK_TYPE_ENTRY,
1661                               "has_frame", FALSE,
1662                               "xalign", cell->xalign,
1663                               NULL);
1664
1665   if (celltext->text)
1666     gtk_entry_set_text (GTK_ENTRY (priv->entry), celltext->text);
1667   g_object_set_data_full (G_OBJECT (priv->entry), GTK_CELL_RENDERER_TEXT_PATH, g_strdup (path), g_free);
1668
1669   gtk_editable_select_region (GTK_EDITABLE (priv->entry), 0, -1);
1670
1671
1672   priv->in_entry_menu = FALSE;
1673   if (priv->entry_menu_popdown_timeout)
1674     {
1675       g_source_remove (priv->entry_menu_popdown_timeout);
1676       priv->entry_menu_popdown_timeout = 0;
1677     }
1678
1679   g_signal_connect (priv->entry,
1680                     "editing_done",
1681                     G_CALLBACK (gtk_cell_renderer_text_editing_done),
1682                     celltext);
1683   priv->focus_out_id = g_signal_connect (priv->entry, "focus_out_event",
1684                          G_CALLBACK (gtk_cell_renderer_text_focus_out_event),
1685                          celltext);
1686   priv->populate_popup_id =
1687     g_signal_connect (priv->entry, "populate_popup",
1688                       G_CALLBACK (gtk_cell_renderer_text_populate_popup),
1689                       celltext);
1690
1691   gtk_widget_show (priv->entry);
1692
1693   return GTK_CELL_EDITABLE (priv->entry);
1694 }
1695
1696 /**
1697  * gtk_cell_renderer_text_set_fixed_height_from_font:
1698  * @renderer: A #GtkCellRendererText
1699  * @number_of_rows: Number of rows of text each cell renderer is allocated, or -1
1700  *
1701  * Sets the height of a renderer to explicitly be determined by the "font" and
1702  * "y_pad" property set on it.  Further changes in these properties do not
1703  * affect the height, so they must be accompanied by a subsequent call to this
1704  * function.  Using this function is unflexible, and should really only be used
1705  * if calculating the size of a cell is too slow (ie, a massive number of cells
1706  * displayed).  If @number_of_rows is -1, then the fixed height is unset, and
1707  * the height is determined by the properties again.
1708  **/
1709 void
1710 gtk_cell_renderer_text_set_fixed_height_from_font (GtkCellRendererText *renderer,
1711                                                    gint                 number_of_rows)
1712 {
1713   g_return_if_fail (GTK_IS_CELL_RENDERER_TEXT (renderer));
1714   g_return_if_fail (number_of_rows == -1 || number_of_rows > 0);
1715
1716   if (number_of_rows == -1)
1717     {
1718       gtk_cell_renderer_set_fixed_size (GTK_CELL_RENDERER (renderer),
1719                                         GTK_CELL_RENDERER (renderer)->width,
1720                                         -1);
1721     }
1722   else
1723     {
1724       renderer->fixed_height_rows = number_of_rows;
1725       renderer->calc_fixed_height = TRUE;
1726     }
1727 }