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

   1 /* GTK - The GIMP Toolkit
   2  * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
   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 #include <ctype.h>
  20 #include <string.h>
  21 #ifdef USE_XIM
  22 #include "gdk/gdkx.h"
  23 #endif
  24 #include "gdk/gdkkeysyms.h"
  25 #include "gdk/gdki18n.h"
  26 #include "gtkentry.h"
  27 #include "gtkmain.h"
  28 #include "gtkselection.h"
  29 #include "gtksignal.h"
  30 #include "gtkprivate.h"
  31
  32 #define MIN_ENTRY_WIDTH  150
  33 #define DRAW_TIMEOUT     20
  34 #define INNER_BORDER     2
  35
  36 static void gtk_entry_class_init          (GtkEntryClass     *klass);
  37 static void gtk_entry_init                (GtkEntry          *entry);
  38 static void gtk_entry_finalize            (GtkObject         *object);
  39 static void gtk_entry_realize             (GtkWidget         *widget);
  40 static void gtk_entry_unrealize           (GtkWidget         *widget);
  41 static void gtk_entry_draw_focus          (GtkWidget         *widget);
  42 static void gtk_entry_size_request        (GtkWidget         *widget,
  43                                            GtkRequisition    *requisition);
  44 static void gtk_entry_size_allocate       (GtkWidget         *widget,
  45                                            GtkAllocation     *allocation);
  46 static void gtk_entry_make_backing_pixmap (GtkEntry *entry,
  47                                            gint width, gint height);
  48 static void gtk_entry_draw                (GtkWidget         *widget,
  49                                            GdkRectangle      *area);
  50 static gint gtk_entry_expose              (GtkWidget         *widget,
  51                                            GdkEventExpose    *event);
  52 static gint gtk_entry_button_press        (GtkWidget         *widget,
  53                                            GdkEventButton    *event);
  54 static gint gtk_entry_button_release      (GtkWidget         *widget,
  55                                            GdkEventButton    *event);
  56 static gint gtk_entry_motion_notify       (GtkWidget         *widget,
  57                                            GdkEventMotion    *event);
  58 static gint gtk_entry_key_press           (GtkWidget         *widget,
  59                                            GdkEventKey       *event);
  60 static gint gtk_entry_focus_in            (GtkWidget         *widget,
  61                                            GdkEventFocus     *event);
  62 static gint gtk_entry_focus_out           (GtkWidget         *widget,
  63                                            GdkEventFocus     *event);
  64 static void gtk_entry_draw_text           (GtkEntry          *entry);
  65 static void gtk_entry_draw_cursor         (GtkEntry          *entry);
  66 static void gtk_entry_draw_cursor_on_drawable
  67                                           (GtkEntry          *entry,
  68                                            GdkDrawable       *drawable);
  69 static void gtk_entry_style_set           (GtkWidget         *widget,
  70                                            GtkStyle          *previous_style);
  71 static void gtk_entry_queue_draw          (GtkEntry          *entry);
  72 static gint gtk_entry_timer               (gpointer           data);
  73 static gint gtk_entry_position            (GtkEntry          *entry,
  74                                            gint               x);
  75        void gtk_entry_adjust_scroll       (GtkEntry          *entry);
  76 static void gtk_entry_grow_text           (GtkEntry          *entry);
  77 static void gtk_entry_insert_text         (GtkEditable       *editable,
  78                                            const gchar       *new_text,
  79                                            gint               new_text_length,
  80                                            gint              *position);
  81 static void gtk_entry_delete_text         (GtkEditable       *editable,
  82                                            gint               start_pos,
  83                                            gint               end_pos);
  84 static void gtk_entry_update_text         (GtkEditable       *editable,
  85                                            gint               start_pos,
  86                                            gint               end_pos);
  87 static gchar *gtk_entry_get_chars         (GtkEditable       *editable,
  88                                            gint               start_pos,
  89                                            gint               end_pos);
  90
  91 static void gtk_move_forward_character    (GtkEntry          *entry);
  92 static void gtk_move_backward_character   (GtkEntry          *entry);
  93 static void gtk_move_forward_word         (GtkEntry          *entry);
  94 static void gtk_move_backward_word        (GtkEntry          *entry);
  95 static void gtk_move_beginning_of_line    (GtkEntry          *entry);
  96 static void gtk_move_end_of_line          (GtkEntry          *entry);
  97 static void gtk_delete_forward_character  (GtkEntry          *entry);
  98 static void gtk_delete_backward_character (GtkEntry          *entry);
  99 static void gtk_delete_forward_word       (GtkEntry          *entry);
 100 static void gtk_delete_backward_word      (GtkEntry          *entry);
 101 static void gtk_delete_line               (GtkEntry          *entry);
 102 static void gtk_delete_to_line_end        (GtkEntry          *entry);
 103 static void gtk_select_word               (GtkEntry          *entry,
 104                                            guint32            time);
 105 static void gtk_select_line               (GtkEntry          *entry,
 106                                            guint32            time);
 107
 108
 109 static void gtk_entry_set_selection       (GtkEditable       *editable,
 110                                            gint               start,
 111                                            gint               end);
 112
 113 static void gtk_entry_recompute_offsets   (GtkEntry          *entry);
 114 static gint gtk_entry_find_char           (GtkEntry          *entry,
 115                                            gint               position);
 116 static gint gtk_entry_find_position       (GtkEntry          *entry,
 117                                            gint               position);
 118
 119 static GtkWidgetClass *parent_class = NULL;
 120 static GdkAtom ctext_atom = GDK_NONE;
 121
 122 static GtkTextFunction control_keys[26] =
 123 {
 124   (GtkTextFunction)gtk_move_beginning_of_line,    /* a */
 125   (GtkTextFunction)gtk_move_backward_character,   /* b */
 126   gtk_editable_copy_clipboard,                    /* c */
 127   (GtkTextFunction)gtk_delete_forward_character,  /* d */
 128   (GtkTextFunction)gtk_move_end_of_line,          /* e */
 129   (GtkTextFunction)gtk_move_forward_character,    /* f */
 130   NULL,                                           /* g */
 131   (GtkTextFunction)gtk_delete_backward_character, /* h */
 132   NULL,                                           /* i */
 133   NULL,                                           /* j */
 134   (GtkTextFunction)gtk_delete_to_line_end,        /* k */
 135   NULL,                                           /* l */
 136   NULL,                                           /* m */
 137   NULL,                                           /* n */
 138   NULL,                                           /* o */
 139   NULL,                                           /* p */
 140   NULL,                                           /* q */
 141   NULL,                                           /* r */
 142   NULL,                                           /* s */
 143   NULL,                                           /* t */
 144   (GtkTextFunction)gtk_delete_line,               /* u */
 145   gtk_editable_paste_clipboard,                   /* v */
 146   (GtkTextFunction)gtk_delete_backward_word,      /* w */
 147   gtk_editable_cut_clipboard,                     /* x */
 148   NULL,                                           /* y */
 149   NULL,                                           /* z */
 150 };
 151
 152 static GtkTextFunction alt_keys[26] =
 153 {
 154   NULL,                                           /* a */
 155   (GtkTextFunction)gtk_move_backward_word,        /* b */
 156   NULL,                                           /* c */
 157   (GtkTextFunction)gtk_delete_forward_word,       /* d */
 158   NULL,                                           /* e */
 159   (GtkTextFunction)gtk_move_forward_word,         /* f */
 160   NULL,                                           /* g */
 161   NULL,                                           /* h */
 162   NULL,                                           /* i */
 163   NULL,                                           /* j */
 164   NULL,                                           /* k */
 165   NULL,                                           /* l */
 166   NULL,                                           /* m */
 167   NULL,                                           /* n */
 168   NULL,                                           /* o */
 169   NULL,                                           /* p */
 170   NULL,                                           /* q */
 171   NULL,                                           /* r */
 172   NULL,                                           /* s */
 173   NULL,                                           /* t */
 174   NULL,                                           /* u */
 175   NULL,                                           /* v */
 176   NULL,                                           /* w */
 177   NULL,                                           /* x */
 178   NULL,                                           /* y */
 179   NULL,                                           /* z */
 180 };
 181
 182
 183 guint
 184 gtk_entry_get_type ()
 185 {
 186   static guint entry_type = 0;
 187
 188   if (!entry_type)
 189     {
 190       GtkTypeInfo entry_info =
 191       {
 192         "GtkEntry",
 193         sizeof (GtkEntry),
 194         sizeof (GtkEntryClass),
 195         (GtkClassInitFunc) gtk_entry_class_init,
 196         (GtkObjectInitFunc) gtk_entry_init,
 197         (GtkArgSetFunc) NULL,
 198         (GtkArgGetFunc) NULL,
 199       };
 200
 201       entry_type = gtk_type_unique (gtk_editable_get_type (), &entry_info);
 202     }
 203
 204   return entry_type;
 205 }
 206
 207 static void
 208 gtk_entry_class_init (GtkEntryClass *class)
 209 {
 210   GtkObjectClass *object_class;
 211   GtkWidgetClass *widget_class;
 212   GtkEditableClass *editable_class;
 213
 214   object_class = (GtkObjectClass*) class;
 215   widget_class = (GtkWidgetClass*) class;
 216   editable_class = (GtkEditableClass*) class;
 217
 218   parent_class = gtk_type_class (gtk_editable_get_type ());
 219
 220   object_class->finalize = gtk_entry_finalize;
 221
 222   widget_class->realize = gtk_entry_realize;
 223   widget_class->unrealize = gtk_entry_unrealize;
 224   widget_class->draw_focus = gtk_entry_draw_focus;
 225   widget_class->size_request = gtk_entry_size_request;
 226   widget_class->size_allocate = gtk_entry_size_allocate;
 227   widget_class->draw = gtk_entry_draw;
 228   widget_class->expose_event = gtk_entry_expose;
 229   widget_class->button_press_event = gtk_entry_button_press;
 230   widget_class->button_release_event = gtk_entry_button_release;
 231   widget_class->motion_notify_event = gtk_entry_motion_notify;
 232   widget_class->key_press_event = gtk_entry_key_press;
 233   widget_class->focus_in_event = gtk_entry_focus_in;
 234   widget_class->focus_out_event = gtk_entry_focus_out;
 235   widget_class->style_set    = gtk_entry_style_set;
 236
 237   editable_class->insert_text = gtk_entry_insert_text;
 238   editable_class->delete_text = gtk_entry_delete_text;
 239   editable_class->update_text = gtk_entry_update_text;
 240   editable_class->get_chars   = gtk_entry_get_chars;
 241   editable_class->set_selection = gtk_entry_set_selection;
 242   editable_class->changed = (void (*)(GtkEditable *)) gtk_entry_adjust_scroll;
 243   editable_class->activate = NULL;
 244 }
 245
 246 static void
 247 gtk_entry_init (GtkEntry *entry)
 248 {
 249   GTK_WIDGET_SET_FLAGS (entry, GTK_CAN_FOCUS);
 250
 251   entry->text_area = NULL;
 252   entry->backing_pixmap = NULL;
 253   entry->text = NULL;
 254   entry->text_size = 0;
 255   entry->text_length = 0;
 256   entry->text_max_length = 0;
 257   entry->scroll_offset = 0;
 258   entry->timer = 0;
 259   entry->button = 0;
 260   entry->visible = 1;
 261
 262   entry->nchars = 0;
 263   entry->char_pos = NULL;
 264   entry->char_offset = NULL;
 265
 266   gtk_entry_grow_text (entry);
 267 }
 268
 269 GtkWidget*
 270 gtk_entry_new ()
 271 {
 272   return GTK_WIDGET (gtk_type_new (gtk_entry_get_type ()));
 273 }
 274
 275 GtkWidget*
 276 gtk_entry_new_with_max_length (guint16 max)
 277 {
 278   GtkEntry *entry;
 279   entry = gtk_type_new (gtk_entry_get_type ());
 280   entry->text_max_length = max;
 281   return GTK_WIDGET (entry);
 282 }
 283
 284 void
 285 gtk_entry_set_text (GtkEntry *entry,
 286                     const gchar *text)
 287 {
 288   gint tmp_pos;
 289
 290   GtkEditable *editable;
 291
 292   g_return_if_fail (entry != NULL);
 293   g_return_if_fail (GTK_IS_ENTRY (entry));
 294   g_return_if_fail (text != NULL);
 295
 296   editable = GTK_EDITABLE (entry);
 297
 298   gtk_entry_delete_text (GTK_EDITABLE(entry), 0, entry->text_length);
 299
 300   tmp_pos = 0;
 301   gtk_editable_insert_text (editable, text, strlen (text), &tmp_pos);
 302   editable->current_pos = tmp_pos;
 303
 304   editable->selection_start_pos = 0;
 305   editable->selection_end_pos = 0;
 306
 307   if (GTK_WIDGET_DRAWABLE (entry))
 308     gtk_entry_draw_text (entry);
 309 }
 310
 311 void
 312 gtk_entry_append_text (GtkEntry *entry,
 313                        const gchar *text)
 314 {
 315   gint tmp_pos;
 316
 317   g_return_if_fail (entry != NULL);
 318   g_return_if_fail (GTK_IS_ENTRY (entry));
 319   g_return_if_fail (text != NULL);
 320
 321   tmp_pos = entry->text_length;
 322   gtk_editable_insert_text (GTK_EDITABLE(entry), text, strlen (text), &tmp_pos);
 323   GTK_EDITABLE(entry)->current_pos = tmp_pos;
 324 }
 325
 326 void
 327 gtk_entry_prepend_text (GtkEntry *entry,
 328                         const gchar *text)
 329 {
 330   gint tmp_pos;
 331
 332   g_return_if_fail (entry != NULL);
 333   g_return_if_fail (GTK_IS_ENTRY (entry));
 334   g_return_if_fail (text != NULL);
 335
 336   tmp_pos = 0;
 337   gtk_editable_insert_text (GTK_EDITABLE(entry), text, strlen (text), &tmp_pos);
 338   GTK_EDITABLE(entry)->current_pos = tmp_pos;
 339 }
 340
 341 void
 342 gtk_entry_set_position (GtkEntry *entry,
 343                         gint      position)
 344 {
 345   g_return_if_fail (entry != NULL);
 346   g_return_if_fail (GTK_IS_ENTRY (entry));
 347
 348   if ((position == -1) || (position > entry->text_length))
 349     GTK_EDITABLE(entry)->current_pos = entry->text_length;
 350   else
 351     GTK_EDITABLE(entry)->current_pos = position;
 352 }
 353
 354 void
 355 gtk_entry_set_visibility (GtkEntry *entry,
 356                           gboolean visible)
 357 {
 358   g_return_if_fail (entry != NULL);
 359   g_return_if_fail (GTK_IS_ENTRY (entry));
 360
 361   entry->visible = visible;
 362 }
 363
 364 void
 365 gtk_entry_set_editable(GtkEntry *entry,
 366                        gboolean editable)
 367 {
 368   g_return_if_fail (entry != NULL);
 369   g_return_if_fail (GTK_IS_ENTRY (entry));
 370
 371   GTK_EDITABLE (entry)->editable = editable;
 372   gtk_entry_queue_draw (entry);
 373 }
 374
 375 gchar*
 376 gtk_entry_get_text (GtkEntry *entry)
 377 {
 378   static char empty_str[2] = "";
 379
 380   g_return_val_if_fail (entry != NULL, NULL);
 381   g_return_val_if_fail (GTK_IS_ENTRY (entry), NULL);
 382
 383   if (!entry->text)
 384     return empty_str;
 385   return entry->text;
 386 }
 387
 388 static void
 389 gtk_entry_finalize (GtkObject *object)
 390 {
 391   GtkEntry *entry;
 392
 393   g_return_if_fail (object != NULL);
 394   g_return_if_fail (GTK_IS_ENTRY (object));
 395
 396   entry = GTK_ENTRY (object);
 397
 398 #ifdef USE_XIM
 399   if (GTK_EDITABLE(entry)->ic)
 400     {
 401       gdk_ic_destroy (GTK_EDITABLE(entry)->ic);
 402       GTK_EDITABLE(entry)->ic = NULL;
 403     }
 404 #endif
 405
 406   if (entry->timer)
 407     gtk_timeout_remove (entry->timer);
 408
 409   entry->text_size = 0;
 410   if (entry->text)
 411     g_free (entry->text);
 412   if (entry->char_pos)
 413     g_free (entry->char_pos);
 414   if (entry->char_offset)
 415     g_free (entry->char_offset);
 416   entry->text = NULL;
 417
 418   if (entry->backing_pixmap)
 419     gdk_pixmap_unref (entry->backing_pixmap);
 420
 421   (* GTK_OBJECT_CLASS (parent_class)->finalize) (object);
 422 }
 423
 424 static void
 425 gtk_entry_realize (GtkWidget *widget)
 426 {
 427   GtkEntry *entry;
 428   GtkEditable *editable;
 429   GdkWindowAttr attributes;
 430   gint attributes_mask;
 431
 432   g_return_if_fail (widget != NULL);
 433   g_return_if_fail (GTK_IS_ENTRY (widget));
 434
 435   GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
 436   entry = GTK_ENTRY (widget);
 437   editable = GTK_EDITABLE (widget);
 438
 439   attributes.window_type = GDK_WINDOW_CHILD;
 440   attributes.x = widget->allocation.x;
 441   attributes.y = widget->allocation.y + (widget->allocation.height -
 442                                          widget->requisition.height) / 2;
 443   attributes.width = widget->allocation.width;
 444   attributes.height = widget->requisition.height;
 445   attributes.wclass = GDK_INPUT_OUTPUT;
 446   attributes.visual = gtk_widget_get_visual (widget);
 447   attributes.colormap = gtk_widget_get_colormap (widget);
 448   attributes.event_mask = gtk_widget_get_events (widget);
 449   attributes.event_mask |= (GDK_EXPOSURE_MASK |
 450                             GDK_BUTTON_PRESS_MASK |
 451                             GDK_BUTTON_RELEASE_MASK |
 452                             GDK_BUTTON1_MOTION_MASK |
 453                             GDK_BUTTON3_MOTION_MASK |
 454                             GDK_POINTER_MOTION_HINT_MASK |
 455                             GDK_ENTER_NOTIFY_MASK |
 456                             GDK_LEAVE_NOTIFY_MASK |
 457                             GDK_KEY_PRESS_MASK);
 458   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
 459
 460   widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask);
 461   gdk_window_set_user_data (widget->window, entry);
 462
 463   attributes.x = widget->style->klass->xthickness + INNER_BORDER;
 464   attributes.y = widget->style->klass->ythickness + INNER_BORDER;
 465   attributes.width = widget->allocation.width - attributes.x * 2;
 466   attributes.height = widget->requisition.height - attributes.y * 2;
 467   attributes.cursor = entry->cursor = gdk_cursor_new (GDK_XTERM);
 468   attributes_mask |= GDK_WA_CURSOR;
 469
 470   entry->text_area = gdk_window_new (widget->window, &attributes, attributes_mask);
 471   gdk_window_set_user_data (entry->text_area, entry);
 472
 473   widget->style = gtk_style_attach (widget->style, widget->window);
 474
 475   gdk_window_set_background (widget->window, &widget->style->base[GTK_STATE_NORMAL]);
 476   gdk_window_set_background (entry->text_area, &widget->style->base[GTK_STATE_NORMAL]);
 477
 478 #ifdef USE_XIM
 479   if (gdk_im_ready ())
 480     {
 481       GdkPoint spot;
 482       GdkRectangle rect;
 483       gint width, height;
 484       GdkEventMask mask;
 485       GdkIMStyle style;
 486       GdkIMStyle supported_style = GdkIMPreeditNone | GdkIMPreeditNothing |
 487                         GdkIMPreeditPosition |
 488                         GdkIMStatusNone | GdkIMStatusNothing;
 489
 490       if (widget->style && widget->style->font->type != GDK_FONT_FONTSET)
 491         supported_style &= ~GdkIMPreeditPosition;
 492
 493       style = gdk_im_decide_style (supported_style);
 494       switch (style & GdkIMPreeditMask)
 495         {
 496         case GdkIMPreeditPosition:
 497           if (widget->style && widget->style->font->type != GDK_FONT_FONTSET)
 498             {
 499               g_warning ("over-the-spot style requires fontset");
 500               break;
 501             }
 502           gdk_window_get_size (entry->text_area, &width, &height);
 503           rect.x = 0;
 504           rect.y = 0;
 505           rect.width = width;
 506           rect.height = height;
 507           spot.x = 0;
 508           spot.y = height;
 509           editable->ic = gdk_ic_new (entry->text_area, entry->text_area,
 510                                style,
 511                                "spotLocation", &spot,
 512                                "area", &rect,
 513                                "fontSet", GDK_FONT_XFONT (widget->style->font),
 514                                NULL);
 515           break;
 516         default:
 517           editable->ic = gdk_ic_new (entry->text_area, entry->text_area,
 518                                   style, NULL);
 519         }
 520
 521       if (editable->ic == NULL)
 522         g_warning ("Can't create input context.");
 523       else
 524         {
 525           GdkColormap *colormap;
 526
 527           mask = gdk_window_get_events (entry->text_area);
 528           mask |= gdk_ic_get_events (editable->ic);
 529           gdk_window_set_events (entry->text_area, mask);
 530
 531           if ((colormap = gtk_widget_get_colormap (widget)) !=
 532                 gtk_widget_get_default_colormap ())
 533             {
 534               gdk_ic_set_attr (editable->ic, "preeditAttributes",
 535                                "colorMap", GDK_COLORMAP_XCOLORMAP (colormap),
 536                                NULL);
 537             }
 538           gdk_ic_set_attr (editable->ic,"preeditAttributes",
 539                      "foreground", widget->style->fg[GTK_STATE_NORMAL].pixel,
 540                      "background", widget->style->base[GTK_STATE_NORMAL].pixel,
 541                      NULL);
 542         }
 543     }
 544 #endif
 545
 546   gdk_window_show (entry->text_area);
 547
 548   if (editable->selection_start_pos != editable->selection_end_pos)
 549     gtk_editable_claim_selection (editable, TRUE, GDK_CURRENT_TIME);
 550
 551   gtk_entry_recompute_offsets (entry);
 552 }
 553
 554 static void
 555 gtk_entry_unrealize (GtkWidget *widget)
 556 {
 557   GtkEntry *entry;
 558
 559   g_return_if_fail (widget != NULL);
 560   g_return_if_fail (GTK_IS_ENTRY (widget));
 561
 562   entry = GTK_ENTRY (widget);
 563
 564   if (entry->text_area)
 565     {
 566       gdk_window_set_user_data (entry->text_area, NULL);
 567       gdk_window_destroy (entry->text_area);
 568       entry->text_area = NULL;
 569       gdk_cursor_destroy (entry->cursor);
 570       entry->cursor = NULL;
 571     }
 572
 573   if (GTK_WIDGET_CLASS (parent_class)->unrealize)
 574     (* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
 575 }
 576
 577 static void
 578 gtk_entry_draw_focus (GtkWidget *widget)
 579 {
 580   gint width, height;
 581   gint x, y;
 582
 583   g_return_if_fail (widget != NULL);
 584   g_return_if_fail (GTK_IS_ENTRY (widget));
 585
 586   if (GTK_WIDGET_DRAWABLE (widget))
 587     {
 588       x = 0;
 589       y = 0;
 590       gdk_window_get_size (widget->window, &width, &height);
 591
 592       if (GTK_WIDGET_HAS_FOCUS (widget))
 593         {
 594           x += 1;
 595           y += 1;
 596           width -= 2;
 597           height -= 2;
 598         }
 599       else
 600         {
 601           gdk_draw_rectangle (widget->window,
 602                               widget->style->base_gc[GTK_WIDGET_STATE(widget)],
 603                               FALSE, x + 2, y + 2, width - 5, height - 5);
 604         }
 605
 606       gtk_draw_shadow (widget->style, widget->window,
 607                        GTK_STATE_NORMAL, GTK_SHADOW_IN,
 608                        x, y, width, height);
 609
 610       if (GTK_WIDGET_HAS_FOCUS (widget))
 611         {
 612           gdk_window_get_size (widget->window, &width, &height);
 613           gdk_draw_rectangle (widget->window, widget->style->fg_gc[GTK_STATE_NORMAL],
 614                               FALSE, 0, 0, width - 1, height - 1);
 615         }
 616
 617       if (GTK_EDITABLE (widget)->editable)
 618         gtk_entry_draw_cursor (GTK_ENTRY (widget));
 619     }
 620 }
 621
 622 static void
 623 gtk_entry_size_request (GtkWidget      *widget,
 624                         GtkRequisition *requisition)
 625 {
 626   g_return_if_fail (widget != NULL);
 627   g_return_if_fail (GTK_IS_ENTRY (widget));
 628   g_return_if_fail (requisition != NULL);
 629
 630   requisition->width = MIN_ENTRY_WIDTH + (widget->style->klass->xthickness + INNER_BORDER) * 2;
 631   requisition->height = (widget->style->font->ascent +
 632                          widget->style->font->descent +
 633                          (widget->style->klass->ythickness + INNER_BORDER) * 2);
 634 }
 635
 636 static void
 637 gtk_entry_size_allocate (GtkWidget     *widget,
 638                          GtkAllocation *allocation)
 639 {
 640   GtkEntry *entry;
 641   GtkEditable *editable;
 642   gint offset;
 643
 644   g_return_if_fail (widget != NULL);
 645   g_return_if_fail (GTK_IS_ENTRY (widget));
 646   g_return_if_fail (allocation != NULL);
 647
 648   widget->allocation = *allocation;
 649   entry = GTK_ENTRY (widget);
 650   editable = GTK_EDITABLE (widget);
 651
 652   if (GTK_WIDGET_REALIZED (widget))
 653     {
 654       gdk_window_move_resize (widget->window,
 655                               allocation->x,
 656                               allocation->y + (allocation->height - widget->requisition.height) / 2,
 657                               allocation->width, widget->requisition.height);
 658       gdk_window_move_resize (entry->text_area,
 659                               widget->style->klass->xthickness + INNER_BORDER,
 660                               widget->style->klass->ythickness + INNER_BORDER,
 661                               allocation->width - (widget->style->klass->xthickness + INNER_BORDER) * 2,
 662                               widget->requisition.height - (widget->style->klass->ythickness + INNER_BORDER) * 2);
 663
 664       /* Display as much text as we can */
 665       offset = MAX(0, entry->char_offset[entry->nchars] -
 666                    (allocation->width -
 667                        (widget->style->klass->xthickness + INNER_BORDER) * 2));
 668
 669       if (entry->scroll_offset > offset)
 670         entry->scroll_offset = offset;
 671
 672       /* And make sure the cursor is on screen */
 673       gtk_entry_adjust_scroll (entry);
 674
 675 #ifdef USE_XIM
 676       if (editable->ic && (gdk_ic_get_style (editable->ic) & GdkIMPreeditPosition))
 677         {
 678           gint width, height;
 679           GdkRectangle rect;
 680
 681           gdk_window_get_size (entry->text_area, &width, &height);
 682           rect.x = 0;
 683           rect.y = 0;
 684           rect.width = width;
 685           rect.height = height;
 686           gdk_ic_set_attr (editable->ic, "preeditAttributes", "area", &rect, NULL);
 687         }
 688 #endif
 689     }
 690 }
 691
 692 static void
 693 gtk_entry_draw (GtkWidget    *widget,
 694                 GdkRectangle *area)
 695 {
 696   g_return_if_fail (widget != NULL);
 697   g_return_if_fail (GTK_IS_ENTRY (widget));
 698   g_return_if_fail (area != NULL);
 699
 700   if (GTK_WIDGET_DRAWABLE (widget))
 701     {
 702       gtk_widget_draw_focus (widget);
 703       gtk_entry_draw_text (GTK_ENTRY (widget));
 704     }
 705 }
 706
 707 static gint
 708 gtk_entry_expose (GtkWidget      *widget,
 709                   GdkEventExpose *event)
 710 {
 711   GtkEntry *entry;
 712
 713   g_return_val_if_fail (widget != NULL, FALSE);
 714   g_return_val_if_fail (GTK_IS_ENTRY (widget), FALSE);
 715   g_return_val_if_fail (event != NULL, FALSE);
 716
 717   entry = GTK_ENTRY (widget);
 718
 719   if (widget->window == event->window)
 720     gtk_widget_draw_focus (widget);
 721   else if (entry->text_area == event->window)
 722     gtk_entry_draw_text (GTK_ENTRY (widget));
 723
 724   return FALSE;
 725 }
 726
 727 static gint
 728 gtk_entry_button_press (GtkWidget      *widget,
 729                         GdkEventButton *event)
 730 {
 731   GtkEntry *entry;
 732   GtkEditable *editable;
 733   gint tmp_pos;
 734
 735   g_return_val_if_fail (widget != NULL, FALSE);
 736   g_return_val_if_fail (GTK_IS_ENTRY (widget), FALSE);
 737   g_return_val_if_fail (event != NULL, FALSE);
 738
 739   if (ctext_atom == GDK_NONE)
 740     ctext_atom = gdk_atom_intern ("COMPOUND_TEXT", FALSE);
 741
 742   entry = GTK_ENTRY (widget);
 743   editable = GTK_EDITABLE (widget);
 744
 745   if (entry->button && (event->button != entry->button))
 746     return FALSE;
 747
 748   entry->button = event->button;
 749
 750   if (!GTK_WIDGET_HAS_FOCUS (widget))
 751     gtk_widget_grab_focus (widget);
 752
 753   if (event->button == 1)
 754     {
 755       switch (event->type)
 756         {
 757         case GDK_BUTTON_PRESS:
 758           gtk_grab_add (widget);
 759
 760           tmp_pos = gtk_entry_position (entry, event->x + entry->scroll_offset);
 761           /* Set it now, so we display things right. We'll unset it
 762            * later if things don't work out */
 763           editable->has_selection = TRUE;
 764           gtk_entry_set_selection (editable, tmp_pos, tmp_pos);
 765           editable->current_pos = editable->selection_start_pos;
 766           break;
 767
 768         case GDK_2BUTTON_PRESS:
 769           gtk_select_word (entry, event->time);
 770           break;
 771
 772         case GDK_3BUTTON_PRESS:
 773           gtk_select_line (entry, event->time);
 774           break;
 775
 776         default:
 777           break;
 778         }
 779     }
 780   else if (event->type == GDK_BUTTON_PRESS)
 781     {
 782       if ((event->button == 2) && editable->editable)
 783         {
 784           if (editable->selection_start_pos == editable->selection_end_pos ||
 785               editable->has_selection)
 786             editable->current_pos = gtk_entry_position (entry, event->x + entry->scroll_offset);
 787           gtk_selection_convert (widget, GDK_SELECTION_PRIMARY,
 788                                  ctext_atom, event->time);
 789         }
 790       else
 791         {
 792           gtk_grab_add (widget);
 793
 794           tmp_pos = gtk_entry_position (entry, event->x + entry->scroll_offset);
 795           gtk_entry_set_selection (editable, tmp_pos, tmp_pos);
 796           editable->has_selection = FALSE;
 797           editable->current_pos = editable->selection_start_pos;
 798
 799           if (gdk_selection_owner_get (GDK_SELECTION_PRIMARY) == widget->window)
 800             gtk_selection_owner_set (NULL, GDK_SELECTION_PRIMARY, event->time);
 801         }
 802     }
 803
 804   return FALSE;
 805 }
 806
 807 static gint
 808 gtk_entry_button_release (GtkWidget      *widget,
 809                           GdkEventButton *event)
 810 {
 811   GtkEntry *entry;
 812   GtkEditable *editable;
 813
 814   g_return_val_if_fail (widget != NULL, FALSE);
 815   g_return_val_if_fail (GTK_IS_ENTRY (widget), FALSE);
 816   g_return_val_if_fail (event != NULL, FALSE);
 817
 818   entry = GTK_ENTRY (widget);
 819   editable = GTK_EDITABLE (widget);
 820
 821   if (entry->button != event->button)
 822     return FALSE;
 823
 824   entry->button = 0;
 825
 826   if (event->button == 1)
 827     {
 828       gtk_grab_remove (widget);
 829
 830       editable->has_selection = FALSE;
 831       if (editable->selection_start_pos != editable->selection_end_pos)
 832         {
 833           if (gtk_selection_owner_set (widget,
 834                                        GDK_SELECTION_PRIMARY,
 835                                        event->time))
 836             editable->has_selection = TRUE;
 837           else
 838             gtk_entry_queue_draw (entry);
 839         }
 840       else
 841         {
 842           if (gdk_selection_owner_get (GDK_SELECTION_PRIMARY) == widget->window)
 843             gtk_selection_owner_set (NULL, GDK_SELECTION_PRIMARY, event->time);
 844         }
 845     }
 846   else if (event->button == 3)
 847     {
 848       gtk_grab_remove (widget);
 849     }
 850
 851   return FALSE;
 852 }
 853
 854 static gint
 855 gtk_entry_motion_notify (GtkWidget      *widget,
 856                          GdkEventMotion *event)
 857 {
 858   GtkEntry *entry;
 859   gint x;
 860
 861   g_return_val_if_fail (widget != NULL, FALSE);
 862   g_return_val_if_fail (GTK_IS_ENTRY (widget), FALSE);
 863   g_return_val_if_fail (event != NULL, FALSE);
 864
 865   entry = GTK_ENTRY (widget);
 866
 867   if (entry->button == 0)
 868     return FALSE;
 869
 870   x = event->x;
 871   if (event->is_hint || (entry->text_area != event->window))
 872     gdk_window_get_pointer (entry->text_area, &x, NULL, NULL);
 873
 874   GTK_EDITABLE(entry)->selection_end_pos = gtk_entry_position (entry, x + entry->scroll_offset);
 875   GTK_EDITABLE(entry)->current_pos = GTK_EDITABLE(entry)->selection_end_pos;
 876   gtk_entry_adjust_scroll (entry);
 877   gtk_entry_queue_draw (entry);
 878
 879   return FALSE;
 880 }
 881
 882 static gint
 883 gtk_entry_key_press (GtkWidget   *widget,
 884                      GdkEventKey *event)
 885 {
 886   GtkEntry *entry;
 887   GtkEditable *editable;
 888
 889   gint return_val;
 890   gint key;
 891   guint initial_pos;
 892   gint extend_selection;
 893   gint extend_start;
 894
 895   g_return_val_if_fail (widget != NULL, FALSE);
 896   g_return_val_if_fail (GTK_IS_ENTRY (widget), FALSE);
 897   g_return_val_if_fail (event != NULL, FALSE);
 898
 899   entry = GTK_ENTRY (widget);
 900   editable = GTK_EDITABLE (widget);
 901   return_val = FALSE;
 902
 903   if(editable->editable == FALSE)
 904     return FALSE;
 905
 906   initial_pos = editable->current_pos;
 907
 908   extend_selection = event->state & GDK_SHIFT_MASK;
 909   extend_start = FALSE;
 910
 911   if (extend_selection)
 912     {
 913       if (editable->selection_start_pos == editable->selection_end_pos)
 914         {
 915           editable->selection_start_pos = editable->current_pos;
 916           editable->selection_end_pos = editable->current_pos;
 917         }
 918
 919       extend_start = (editable->current_pos == editable->selection_start_pos);
 920     }
 921
 922   switch (event->keyval)
 923     {
 924     case GDK_BackSpace:
 925       return_val = TRUE;
 926       if (event->state & GDK_CONTROL_MASK)
 927         gtk_delete_backward_word (entry);
 928       else
 929         gtk_delete_backward_character (entry);
 930       break;
 931     case GDK_Clear:
 932       return_val = TRUE;
 933       gtk_delete_line (entry);
 934       break;
 935     case GDK_Insert:
 936       return_val = TRUE;
 937       if (event->state & GDK_SHIFT_MASK)
 938         {
 939           extend_selection = FALSE;
 940           gtk_editable_paste_clipboard (editable, event->time);
 941         }
 942       else if (event->state & GDK_CONTROL_MASK)
 943         {
 944           gtk_editable_copy_clipboard (editable, event->time);
 945         }
 946       else
 947         {
 948           /* gtk_toggle_insert(entry) -- IMPLEMENT */
 949         }
 950       break;
 951     case GDK_Delete:
 952       return_val = TRUE;
 953       if (event->state & GDK_CONTROL_MASK)
 954         gtk_delete_forward_word (entry);
 955       else if (event->state & GDK_SHIFT_MASK)
 956         {
 957           extend_selection = FALSE;
 958           gtk_editable_cut_clipboard (editable, event->time);
 959         }
 960       else
 961         gtk_delete_forward_character (entry);
 962       break;
 963     case GDK_Home:
 964       return_val = TRUE;
 965       gtk_move_beginning_of_line (entry);
 966       break;
 967     case GDK_End:
 968       return_val = TRUE;
 969       gtk_move_end_of_line (entry);
 970       break;
 971     case GDK_Left:
 972       return_val = TRUE;
 973       if (event->state & GDK_CONTROL_MASK)
 974         gtk_move_backward_word (entry);
 975       else
 976         gtk_move_backward_character (entry);
 977       break;
 978     case GDK_Right:
 979       return_val = TRUE;
 980       if (event->state & GDK_CONTROL_MASK)
 981         gtk_move_forward_word (entry);
 982       else
 983         gtk_move_forward_character (entry);
 984       break;
 985     case GDK_Return:
 986       return_val = TRUE;
 987       gtk_signal_emit_by_name (GTK_OBJECT (entry), "activate");
 988       break;
 989     /* The next two keys should not be inserted literally. Any others ??? */
 990     case GDK_Tab:
 991     case GDK_Escape:
 992       break;
 993     default:
 994       if ((event->keyval >= 0x20) && (event->keyval <= 0xFF))
 995         {
 996           key = event->keyval;
 997
 998           if (event->state & GDK_CONTROL_MASK)
 999             {
1000               if ((key >= 'A') && (key <= 'Z'))
1001                 key -= 'A' - 'a';
1002
1003               if ((key >= 'a') && (key <= 'z') && control_keys[key - 'a'])
1004                 {
1005                   (* control_keys[key - 'a']) (editable, event->time);
1006                   return_val = TRUE;
1007                 }
1008               break;
1009             }
1010           else if (event->state & GDK_MOD1_MASK)
1011             {
1012               if ((key >= 'A') && (key <= 'Z'))
1013                 key -= 'A' - 'a';
1014
1015               if ((key >= 'a') && (key <= 'z') && alt_keys[key - 'a'])
1016                 {
1017                   (* alt_keys[key - 'a']) (editable, event->time);
1018                   return_val = TRUE;
1019                 }
1020               break;
1021             }
1022         }
1023       if (event->length > 0)
1024         {
1025           gint tmp_pos;
1026
1027           extend_selection = FALSE;
1028           gtk_editable_delete_selection (editable);
1029
1030           tmp_pos = editable->current_pos;
1031           gtk_editable_insert_text (editable, event->string, event->length, &tmp_pos);
1032           editable->current_pos = tmp_pos;
1033
1034           return_val = TRUE;
1035         }
1036       break;
1037     }
1038
1039   if (return_val && (editable->current_pos != initial_pos))
1040     {
1041       if (extend_selection)
1042         {
1043           if (editable->current_pos < editable->selection_start_pos)
1044             editable->selection_start_pos = editable->current_pos;
1045           else if (editable->current_pos > editable->selection_end_pos)
1046             editable->selection_end_pos = editable->current_pos;
1047           else
1048             {
1049               if (extend_start)
1050                 editable->selection_start_pos = editable->current_pos;
1051               else
1052                 editable->selection_end_pos = editable->current_pos;
1053             }
1054         }
1055       else
1056         {
1057           editable->selection_start_pos = 0;
1058           editable->selection_end_pos = 0;
1059         }
1060
1061       gtk_editable_claim_selection (editable,
1062                                     editable->selection_start_pos != editable->selection_end_pos,
1063                                     event->time);
1064
1065       gtk_entry_adjust_scroll (entry);
1066       gtk_entry_queue_draw (entry);
1067     }
1068
1069   return return_val;
1070 }
1071
1072 static gint
1073 gtk_entry_focus_in (GtkWidget     *widget,
1074                     GdkEventFocus *event)
1075 {
1076   g_return_val_if_fail (widget != NULL, FALSE);
1077   g_return_val_if_fail (GTK_IS_ENTRY (widget), FALSE);
1078   g_return_val_if_fail (event != NULL, FALSE);
1079
1080   GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
1081   gtk_widget_draw_focus (widget);
1082
1083 #ifdef USE_XIM
1084   if (GTK_EDITABLE(widget)->ic)
1085     gdk_im_begin (GTK_EDITABLE(widget)->ic, GTK_ENTRY(widget)->text_area);
1086 #endif
1087
1088   return FALSE;
1089 }
1090
1091 static gint
1092 gtk_entry_focus_out (GtkWidget     *widget,
1093                      GdkEventFocus *event)
1094 {
1095   g_return_val_if_fail (widget != NULL, FALSE);
1096   g_return_val_if_fail (GTK_IS_ENTRY (widget), FALSE);
1097   g_return_val_if_fail (event != NULL, FALSE);
1098
1099   GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
1100   gtk_widget_draw_focus (widget);
1101
1102 #ifdef USE_XIM
1103   gdk_im_end ();
1104 #endif
1105
1106   return FALSE;
1107 }
1108
1109 static void
1110 gtk_entry_make_backing_pixmap (GtkEntry *entry, gint width, gint height)
1111 {
1112   gint pixmap_width, pixmap_height;
1113
1114   if (!entry->backing_pixmap)
1115     {
1116       /* allocate */
1117       entry->backing_pixmap = gdk_pixmap_new (entry->text_area,
1118                                               width, height,
1119                                               -1);
1120     }
1121   else
1122     {
1123       /* reallocate if sizes don't match */
1124       gdk_window_get_size (entry->backing_pixmap,
1125                            &pixmap_width, &pixmap_height);
1126       if ((pixmap_width != width) || (pixmap_height != height))
1127         {
1128           gdk_pixmap_unref (entry->backing_pixmap);
1129           entry->backing_pixmap = gdk_pixmap_new (entry->text_area,
1130                                                   width, height,
1131                                                   -1);
1132         }
1133     }
1134 }
1135
1136 static void
1137 gtk_entry_draw_text (GtkEntry *entry)
1138 {
1139   GtkWidget *widget;
1140   GtkEditable *editable;
1141   GtkStateType selected_state;
1142   gint start_char;
1143   gint start_pos;
1144   gint end_pos;
1145   gint start_xoffset;
1146   gint selection_start_pos;
1147   gint selection_end_pos;
1148   gint selection_start_xoffset;
1149   gint selection_end_xoffset;
1150   gint width, height;
1151   gint y;
1152   GdkDrawable *drawable;
1153   gint use_backing_pixmap;
1154
1155   g_return_if_fail (entry != NULL);
1156   g_return_if_fail (GTK_IS_ENTRY (entry));
1157
1158   if (entry->timer)
1159     {
1160       gtk_timeout_remove (entry->timer);
1161       entry->timer = 0;
1162     }
1163
1164   if (!entry->visible)
1165     {
1166       gtk_entry_draw_cursor (entry);
1167       return;
1168     }
1169
1170   if (GTK_WIDGET_DRAWABLE (entry))
1171     {
1172       widget = GTK_WIDGET (entry);
1173       editable = GTK_EDITABLE (entry);
1174
1175       if (!entry->text)
1176         {
1177           gdk_window_clear (entry->text_area);
1178           if (editable->editable)
1179             gtk_entry_draw_cursor (entry);
1180           return;
1181         }
1182
1183       gdk_window_get_size (entry->text_area, &width, &height);
1184
1185       /*
1186         If the widget has focus, draw on a backing pixmap to avoid flickering
1187         and copy it to the text_area.
1188         Otherwise draw to text_area directly for better speed.
1189       */
1190       use_backing_pixmap = GTK_WIDGET_HAS_FOCUS (widget) && (entry->text != NULL);
1191       if (use_backing_pixmap)
1192         {
1193           gtk_entry_make_backing_pixmap (entry, width, height);
1194           drawable = entry->backing_pixmap;
1195           gdk_draw_rectangle (drawable,
1196                               widget->style->base_gc[GTK_WIDGET_STATE(widget)],
1197                               TRUE,
1198                               0, 0,
1199                               width,
1200                               height);
1201         }
1202       else
1203         {
1204           drawable = entry->text_area;
1205           gdk_window_clear (entry->text_area);
1206         }
1207
1208       y = (height - (widget->style->font->ascent + widget->style->font->descent)) / 2;
1209       y += widget->style->font->ascent;
1210
1211       start_char = gtk_entry_find_position (entry, entry->scroll_offset);
1212       start_pos = entry->char_pos[start_char];
1213       start_xoffset = entry->char_offset[start_char] - entry->scroll_offset;
1214
1215       end_pos = gtk_entry_position (entry, entry->scroll_offset + width);
1216       if (end_pos < entry->text_length)
1217         end_pos += 1;
1218
1219       selected_state = GTK_STATE_SELECTED;
1220       if (!editable->has_selection)
1221         selected_state = GTK_STATE_ACTIVE;
1222
1223       selection_start_pos = MIN (editable->selection_start_pos, editable->selection_end_pos);
1224       selection_end_pos = MAX (editable->selection_start_pos, editable->selection_end_pos);
1225
1226       selection_start_pos = CLAMP (selection_start_pos, start_pos, end_pos);
1227       selection_end_pos = CLAMP (selection_end_pos, start_pos, end_pos);
1228
1229       selection_start_xoffset =
1230         entry->char_offset[gtk_entry_find_char(entry,selection_start_pos)] -
1231         entry->scroll_offset;
1232       selection_end_xoffset =
1233         entry->char_offset[gtk_entry_find_char(entry,selection_end_pos)] -
1234         entry->scroll_offset;
1235
1236       if (selection_start_pos > start_pos)
1237         gdk_draw_text (drawable, widget->style->font,
1238                        widget->style->fg_gc[GTK_STATE_NORMAL],
1239                        start_xoffset, y,
1240                        entry->text + start_pos,
1241                        selection_start_pos - start_pos);
1242
1243       if ((selection_end_pos >= start_pos) &&
1244           (selection_start_pos < end_pos) &&
1245           (selection_start_pos != selection_end_pos))
1246         {
1247           gdk_draw_rectangle (drawable,
1248                               widget->style->bg_gc[selected_state],
1249                               TRUE,
1250                               selection_start_xoffset,
1251                               0,
1252                               selection_end_xoffset - selection_start_xoffset,
1253                               -1);
1254
1255           gdk_draw_text (drawable, widget->style->font,
1256                          widget->style->fg_gc[selected_state],
1257                          selection_start_xoffset, y,
1258                          entry->text + selection_start_pos,
1259                          selection_end_pos - selection_start_pos);
1260         }
1261
1262       if (selection_end_pos < end_pos)
1263         gdk_draw_text (drawable, widget->style->font,
1264                        widget->style->fg_gc[GTK_STATE_NORMAL],
1265                        selection_end_xoffset, y,
1266                        entry->text + selection_end_pos,
1267                        end_pos - selection_end_pos);
1268
1269       if (editable->editable)
1270         gtk_entry_draw_cursor_on_drawable (entry, drawable);
1271
1272       if (use_backing_pixmap)
1273         gdk_draw_pixmap(entry->text_area,
1274                         widget->style->fg_gc[GTK_STATE_NORMAL],
1275                         entry->backing_pixmap,
1276                         0, 0, 0, 0, width, height);
1277     }
1278 }
1279
1280 static void
1281 gtk_entry_draw_cursor (GtkEntry *entry)
1282 {
1283   g_return_if_fail (entry != NULL);
1284   g_return_if_fail (GTK_IS_ENTRY (entry));
1285
1286   gtk_entry_draw_cursor_on_drawable (entry, entry->text_area);
1287 }
1288
1289 static void
1290 gtk_entry_draw_cursor_on_drawable (GtkEntry *entry, GdkDrawable *drawable)
1291 {
1292   GtkWidget *widget;
1293   GtkEditable *editable;
1294   GdkGC *gc;
1295   gint xoffset;
1296   gint text_area_height;
1297
1298   g_return_if_fail (entry != NULL);
1299   g_return_if_fail (GTK_IS_ENTRY (entry));
1300
1301   if (GTK_WIDGET_DRAWABLE (entry))
1302     {
1303       widget = GTK_WIDGET (entry);
1304       editable = GTK_EDITABLE (entry);
1305
1306       if (entry->visible)
1307         xoffset = entry->char_offset[gtk_entry_find_char (entry, editable->current_pos)];
1308       else
1309         xoffset = 0;
1310       xoffset -= entry->scroll_offset;
1311
1312       if (GTK_WIDGET_HAS_FOCUS (widget) &&
1313           (editable->selection_start_pos == editable->selection_end_pos))
1314         gc = widget->style->fg_gc[GTK_STATE_NORMAL];
1315       else
1316         gc = widget->style->base_gc[GTK_WIDGET_STATE(widget)];
1317
1318       gdk_window_get_size (entry->text_area, NULL, &text_area_height);
1319       gdk_draw_line (drawable, gc, xoffset, 0, xoffset, text_area_height);
1320 #ifdef USE_XIM
1321       if (gdk_im_ready() && editable->ic &&
1322           gdk_ic_get_style (editable->ic) & GdkIMPreeditPosition)
1323         {
1324           GdkPoint spot;
1325
1326           spot.x = xoffset;
1327           spot.y = (text_area_height + (widget->style->font->ascent - widget->style->font->descent) + 1) / 2;
1328           gdk_ic_set_attr (editable->ic, "preeditAttributes", "spotLocation", &spot, NULL);
1329         }
1330 #endif
1331     }
1332 }
1333
1334 static void
1335 gtk_entry_queue_draw (GtkEntry *entry)
1336 {
1337   g_return_if_fail (entry != NULL);
1338   g_return_if_fail (GTK_IS_ENTRY (entry));
1339
1340   if (!entry->timer)
1341     entry->timer = gtk_timeout_add (DRAW_TIMEOUT, gtk_entry_timer, entry);
1342 }
1343
1344 static gint
1345 gtk_entry_timer (gpointer data)
1346 {
1347   GtkEntry *entry;
1348
1349   g_return_val_if_fail (data != NULL, FALSE);
1350
1351   entry = GTK_ENTRY (data);
1352   entry->timer = 0;
1353   gtk_entry_draw_text (entry);
1354
1355   return FALSE;
1356 }
1357
1358 static gint
1359 gtk_entry_find_position (GtkEntry *entry,
1360                          gint      x)
1361 {
1362   gint start = 0;
1363   gint end = entry->nchars;
1364   gint half;
1365
1366   if (x >= entry->char_offset[end])
1367     return end;
1368   if (x < 0)
1369     return 0;
1370
1371   /* invariant - char_pos[start] <= x < char_pos[end] */
1372
1373   while (start != end)
1374     {
1375       half = (start+end)/2;
1376       if (half == start)
1377         return half;
1378       else if (entry->char_offset[half] <= x)
1379         start = half;
1380       else
1381         end = half;
1382     }
1383
1384   return start;
1385 }
1386
1387 static gint
1388 gtk_entry_position (GtkEntry *entry,
1389                     gint      x)
1390 {
1391   return entry->char_pos[gtk_entry_find_position(entry, x)];
1392 }
1393
1394 void
1395 gtk_entry_adjust_scroll (GtkEntry *entry)
1396 {
1397   gint xoffset;
1398   gint text_area_width;
1399
1400   g_return_if_fail (entry != NULL);
1401   g_return_if_fail (GTK_IS_ENTRY (entry));
1402
1403   if (!entry->text_area)
1404     return;
1405
1406   gdk_window_get_size (entry->text_area, &text_area_width, NULL);
1407
1408   xoffset = entry->char_offset[gtk_entry_find_char (entry, GTK_EDITABLE(entry)->current_pos)];
1409   xoffset -= entry->scroll_offset;
1410
1411   if (xoffset < 0)
1412     entry->scroll_offset += xoffset;
1413
1414   else if (xoffset > text_area_width)
1415     entry->scroll_offset += xoffset - text_area_width + 1;
1416 }
1417
1418 static void
1419 gtk_entry_grow_text (GtkEntry *entry)
1420 {
1421   gint previous_size;
1422   gint i;
1423
1424   g_return_if_fail (entry != NULL);
1425   g_return_if_fail (GTK_IS_ENTRY (entry));
1426
1427   previous_size = entry->text_size;
1428   if (!entry->text_size)
1429     entry->text_size = 128;
1430   else
1431     entry->text_size *= 2;
1432   entry->text = g_realloc (entry->text, entry->text_size);
1433   entry->char_pos = g_realloc (entry->char_pos,
1434                                entry->text_size * sizeof(guint16));
1435   entry->char_offset = g_realloc (entry->char_offset,
1436                                   entry->text_size * sizeof(guint));
1437
1438   if (entry->text_length == 0)  /* initial allocation */
1439     {
1440       entry->char_pos[0] = 0;
1441       entry->char_offset[0] = 0;
1442     }
1443
1444   for (i = previous_size; i < entry->text_size; i++)
1445     entry->text[i] = '\0';
1446 }
1447
1448 static void
1449 gtk_entry_insert_text (GtkEditable *editable,
1450                        const gchar *new_text,
1451                        gint         new_text_length,
1452                        gint        *position)
1453 {
1454   gchar *text;
1455   gint start_char;
1456   gint end_char;
1457   gint start_pos;
1458   gint last_char;
1459   gint end_pos;
1460   gint last_pos;
1461   gint max_length;
1462   gint i;
1463
1464   gint insertion_chars;
1465   guint16 *insertion_pos = NULL; /* Quiet the compiler */
1466
1467   GtkEntry *entry;
1468
1469   g_return_if_fail (editable != NULL);
1470   g_return_if_fail (GTK_IS_ENTRY (editable));
1471
1472   entry = GTK_ENTRY (editable);
1473
1474   if (new_text_length < 0)
1475     new_text_length = strlen (new_text);
1476
1477   /* The algorithms here will work as long as, the text size (a
1478    * multiple of 2), fits into a guint16 but we specify a shorter
1479    * maximum length so that if the user pastes a very long text, there
1480    * is not a long hang from the slow X_LOCALE functions.  */
1481
1482   if (entry->text_max_length == 0)
1483     max_length = 2047;
1484   else
1485     max_length = MIN (2047, entry->text_max_length);
1486
1487   /* Make sure we do not exceed the maximum size of the entry. */
1488   if (new_text_length + entry->text_length > max_length)
1489     new_text_length = max_length - entry->text_length;
1490
1491   /* Don't insert anything, if there was nothing to insert. */
1492   if (new_text_length <= 0)
1493     return;
1494
1495   /* Find the length of the inserted text in characters, chop off
1496      partial/invalid characters */
1497   if (gtk_use_mb)
1498     {
1499       gint len = 0;
1500
1501       insertion_pos = g_new (guint16, new_text_length+1);
1502       insertion_chars = 0;
1503
1504       for (i=0; i<new_text_length; i+=len)
1505         {
1506           len = mblen (&new_text[i], MIN(MB_CUR_MAX,new_text_length-i));
1507           if (len < 0)
1508             break;
1509           insertion_pos[insertion_chars] =  i;
1510           insertion_chars++;
1511         }
1512       insertion_pos[insertion_chars] =  i;
1513
1514       new_text_length = i;
1515     }
1516   else
1517     insertion_chars = new_text_length;
1518
1519   /* Make sure we are inserting at integral character position */
1520   start_char = gtk_entry_find_char (entry, *position);
1521   start_pos = entry->char_pos[start_char];
1522
1523   end_pos = start_pos + new_text_length;
1524   last_pos = new_text_length + entry->text_length;
1525
1526   if (editable->selection_start_pos >= *position)
1527     editable->selection_start_pos += new_text_length;
1528   if (editable->selection_end_pos >= *position)
1529     editable->selection_end_pos += new_text_length;
1530
1531   while (last_pos >= entry->text_size)
1532     gtk_entry_grow_text (entry);
1533
1534   text = entry->text;
1535   for (i = last_pos - 1; i >= end_pos; i--)
1536     text[i] = text[i- (end_pos - start_pos)];
1537   for (i = start_pos; i < end_pos; i++)
1538     text[i] = new_text[i - start_pos];
1539
1540   if (gtk_use_mb)
1541     {
1542       /* Fix up the character positions */
1543
1544       end_char = start_char + insertion_chars;
1545       last_char = entry->nchars + insertion_chars;
1546
1547       for (i = last_char; i >= end_char; i--)
1548         entry->char_pos[i]
1549           = entry->char_pos[i - insertion_chars] + new_text_length;
1550
1551       for (i = 1; i < insertion_chars ; i++)
1552         entry->char_pos[start_char+i] =
1553           entry->char_pos[start_char] + insertion_pos[i];
1554
1555       g_free (insertion_pos);
1556     }
1557   else
1558     {
1559       end_char = end_pos;
1560       last_char = last_pos;
1561
1562       for (i = start_char ; i <= last_char ; i++)
1563         entry->char_pos[i] = i;
1564     }
1565
1566   /* Fix up the the character offsets */
1567
1568   if (GTK_WIDGET_REALIZED (entry))
1569     {
1570       gint offset = 0;
1571
1572       for (i = last_char; i >= end_char; i--)
1573         entry->char_offset[i]
1574           = entry->char_offset[i - insertion_chars];
1575
1576       for (i=start_char; i<end_char; i++)
1577         {
1578           entry->char_offset[i] = entry->char_offset[start_char] + offset;
1579           offset += gdk_text_width (GTK_WIDGET (entry)->style->font,
1580                                     entry->text + entry->char_pos[i],
1581                                     entry->char_pos[i+1] - entry->char_pos[i]);
1582         }
1583       for (i = end_char ; i <= last_char ; i++)
1584         entry->char_offset[i] += offset;
1585     }
1586
1587   entry->text_length += new_text_length;
1588   entry->nchars += insertion_chars;
1589   *position = end_pos;
1590
1591   gtk_entry_queue_draw (entry);
1592 }
1593
1594 /* Recompute the x offsets of all characters in the buffer */
1595 static void
1596 gtk_entry_recompute_offsets (GtkEntry *entry)
1597 {
1598   gint i;
1599   gint offset = 0;
1600
1601   for (i=0; i<entry->nchars; i++)
1602     {
1603       entry->char_offset[i] = offset;
1604       offset += gdk_text_width (GTK_WIDGET (entry)->style->font,
1605                                 entry->text + entry->char_pos[i],
1606                                 entry->char_pos[i+1] - entry->char_pos[i]);
1607     }
1608
1609   entry->char_offset[i] = offset;
1610 }
1611
1612 /* Given a position in the entry, find the character index of the
1613  * last character with position <= the given position
1614  */
1615 static gint
1616 gtk_entry_find_char (GtkEntry *entry, gint position)
1617 {
1618   gint start = 0;
1619   gint end = entry->nchars;
1620   gint half;
1621
1622   if (position >= entry->char_pos[end])
1623     return end;
1624   if (position < 0)
1625     return 0;
1626
1627   /* invariant - char_pos[start] <= position < char_pos[end] */
1628
1629   while (start != end)
1630     {
1631       half = (start+end)/2;
1632       if (half == start)
1633         return half;
1634       else if (entry->char_pos[half] <= position)
1635         start = half;
1636       else
1637         end = half;
1638     }
1639
1640   return start;
1641 }
1642
1643 static void
1644 gtk_entry_delete_text (GtkEditable *editable,
1645                        gint         start_pos,
1646                        gint         end_pos)
1647 {
1648   gchar *text;
1649   gint deletion_length;
1650   gint start_char;
1651   gint end_char;
1652   gint i;
1653
1654   GtkEntry *entry;
1655
1656   g_return_if_fail (editable != NULL);
1657   g_return_if_fail (GTK_IS_ENTRY (editable));
1658
1659   entry = GTK_ENTRY (editable);
1660
1661   if (end_pos < 0)
1662     end_pos = entry->text_length;
1663
1664   start_char = gtk_entry_find_char (entry, start_pos);
1665   end_char = gtk_entry_find_char (entry, end_pos);
1666   start_pos = entry->char_pos[start_char];
1667   end_pos = entry->char_pos[end_char];
1668
1669   if (editable->selection_start_pos > start_pos)
1670     editable->selection_start_pos -= MIN(end_pos, editable->selection_start_pos) - start_pos;
1671   if (editable->selection_end_pos > start_pos)
1672     editable->selection_end_pos -= MIN(end_pos, editable->selection_end_pos) - start_pos;
1673
1674   if ((start_pos < end_pos) &&
1675       (start_pos >= 0) &&
1676       (end_pos <= entry->text_length))
1677     {
1678       text = entry->text;
1679       deletion_length = end_pos - start_pos;
1680
1681       /* Fix up the character offsets */
1682       if (GTK_WIDGET_REALIZED (entry))
1683         {
1684           gint deletion_width =
1685             entry->char_offset[end_char] - entry->char_offset[start_char];
1686
1687           for (i = 0 ; i <= entry->nchars - end_char; i++)
1688             entry->char_offset[start_char+i] = entry->char_offset[end_char+i] - deletion_width;
1689         }
1690
1691       for (i = end_pos; i < entry->text_length; i++)
1692         text[i - deletion_length] = text[i];
1693
1694       for (i = entry->text_length - deletion_length; i < entry->text_length; i++)
1695         text[i] = '\0';
1696
1697       for (i = 0 ; i <= entry->nchars - end_char; i++)
1698         entry->char_pos[start_char+i] = entry->char_pos[end_char+i] - deletion_length;
1699
1700       entry->nchars -= end_char - start_char;
1701
1702       entry->text_length -= deletion_length;
1703       editable->current_pos = start_pos;
1704     }
1705
1706   gtk_entry_queue_draw (entry);
1707 }
1708
1709 static void
1710 gtk_entry_update_text (GtkEditable *editable,
1711                        gint         start_pos,
1712                        gint         end_pos)
1713 {
1714   gtk_entry_queue_draw (GTK_ENTRY(editable));
1715 }
1716
1717 static gchar *
1718 gtk_entry_get_chars      (GtkEditable   *editable,
1719                           gint           start_pos,
1720                           gint           end_pos)
1721 {
1722   gchar *retval;
1723   GtkEntry *entry;
1724   gchar c;
1725
1726   g_return_val_if_fail (editable != NULL, NULL);
1727   g_return_val_if_fail (GTK_IS_ENTRY (editable), NULL);
1728
1729   entry = GTK_ENTRY (editable);
1730
1731   if (end_pos < 0)
1732     end_pos = entry->text_length;
1733
1734   start_pos = MIN(entry->text_length, start_pos);
1735   end_pos = MIN(entry->text_length, end_pos);
1736
1737   if (start_pos <= end_pos)
1738     {
1739       c = entry->text[end_pos];
1740       entry->text[end_pos] = '\0';
1741
1742       retval = g_strdup (&entry->text[start_pos]);
1743
1744       entry->text[end_pos] = c;
1745
1746       return retval;
1747     }
1748   else
1749     return NULL;
1750 }
1751
1752 static void
1753 gtk_move_forward_character (GtkEntry *entry)
1754 {
1755   gint len;
1756
1757   GtkEditable *editable;
1758   editable = GTK_EDITABLE (entry);
1759
1760   if (gtk_use_mb)
1761     {
1762       if (editable->current_pos < entry->text_length)
1763         {
1764           len = mblen (entry->text+editable->current_pos, MB_CUR_MAX);
1765           editable->current_pos += (len>0)? len:1;
1766         }
1767       if (editable->current_pos > entry->text_length)
1768         editable->current_pos = entry->text_length;
1769     }
1770   else
1771     {
1772       if (editable->current_pos < entry->text_length)
1773         editable->current_pos ++;
1774     }
1775 }
1776
1777 static void
1778 gtk_move_backward_character (GtkEntry *entry)
1779 {
1780   GtkEditable *editable;
1781
1782   editable = GTK_EDITABLE (entry);
1783
1784   if (0 < editable->current_pos)
1785     {
1786       if (gtk_use_mb)
1787         editable->current_pos =
1788           entry->char_pos[gtk_entry_find_char (entry, editable->current_pos - 1)];
1789       else
1790         editable->current_pos--;
1791     }
1792 }
1793
1794 static void
1795 gtk_move_forward_word (GtkEntry *entry)
1796 {
1797   GtkEditable *editable;
1798   gchar *text;
1799   gint i;
1800   wchar_t c;
1801   gint len;
1802
1803   editable = GTK_EDITABLE (entry);
1804
1805   if (entry->text && (editable->current_pos < entry->text_length))
1806     {
1807       text = entry->text;
1808       i = editable->current_pos;
1809
1810       if (gtk_use_mb)
1811         {
1812           len = mbtowc (&c, text+i, MB_CUR_MAX);
1813           if (!iswalnum(c))
1814             for (; i < entry->text_length; i+=len)
1815               {
1816                 len = mbtowc (&c, text+i, MB_CUR_MAX);
1817                 if (len < 1 || iswalnum(c))
1818                   break;
1819               }
1820
1821           for (; i < entry->text_length; i+=len)
1822             {
1823               len = mbtowc (&c, text+i, MB_CUR_MAX);
1824               if (len < 1 || !iswalnum(c))
1825                 break;
1826             }
1827
1828           editable->current_pos = i;
1829           if (editable->current_pos > entry->text_length)
1830             editable->current_pos = entry->text_length;
1831         }
1832       else
1833         {
1834           if (!isalnum (text[i]))
1835             for (; i < entry->text_length; i++)
1836               {
1837                 if (isalnum(text[i]))
1838                   break;
1839               }
1840
1841           for (; i < entry->text_length; i++)
1842             {
1843               if (!isalnum(text[i]))
1844                 break;
1845             }
1846
1847           editable->current_pos = i;
1848         }
1849     }
1850 }
1851
1852 static void
1853 gtk_move_backward_word (GtkEntry *entry)
1854 {
1855   GtkEditable *editable;
1856   gchar *text;
1857   gint i;
1858   wchar_t c;
1859
1860   editable = GTK_EDITABLE (entry);
1861
1862   if (entry->text && editable->current_pos > 0)
1863     {
1864       text = entry->text;
1865
1866       if (gtk_use_mb)
1867         {
1868           i = gtk_entry_find_char (entry, editable->current_pos - 1);
1869
1870           mbtowc (&c, text+entry->char_pos[i], MB_CUR_MAX);
1871           if (!iswalnum(c))
1872             for (; i >= 0; i--)
1873               {
1874                 mbtowc (&c, text+entry->char_pos[i], MB_CUR_MAX);
1875                 if (iswalnum(c))
1876                   break;
1877               }
1878
1879           for (; i >= 0; i--)
1880             {
1881               mbtowc (&c, text+entry->char_pos[i], MB_CUR_MAX);
1882               if (!iswalnum(c))
1883                 {
1884                   i++;
1885                   break;
1886                 }
1887             }
1888
1889           if (i < 0)
1890             i = 0;
1891
1892           editable->current_pos = entry->char_pos[i];
1893         }
1894       else
1895         {
1896           i = editable->current_pos - 1;
1897
1898           if (!isalnum(text[i]))
1899             for (; i >= 0; i--)
1900               {
1901                 if (isalnum(text[i]))
1902                   break;
1903               }
1904
1905           for (; i >= 0; i--)
1906             {
1907               if (!isalnum(text[i]))
1908                 {
1909                   i++;
1910                   break;
1911                 }
1912             }
1913
1914           if (i < 0)
1915             i = 0;
1916
1917           editable->current_pos = i;
1918         }
1919
1920     }
1921 }
1922
1923 static void
1924 gtk_move_beginning_of_line (GtkEntry *entry)
1925 {
1926   GTK_EDITABLE (entry)->current_pos = 0;
1927 }
1928
1929 static void
1930 gtk_move_end_of_line (GtkEntry *entry)
1931 {
1932   GTK_EDITABLE (entry)->current_pos = entry->text_length;
1933 }
1934
1935 static void
1936 gtk_delete_forward_character (GtkEntry *entry)
1937 {
1938   GtkEditable *editable;
1939   gint old_pos;
1940
1941   editable = GTK_EDITABLE (entry);
1942
1943   if (editable->selection_start_pos != editable->selection_end_pos)
1944     gtk_editable_delete_selection (editable);
1945   else
1946     {
1947       old_pos = editable->current_pos;
1948       gtk_move_forward_character (entry);
1949       gtk_editable_delete_text (editable, old_pos, editable->current_pos);
1950     }
1951 }
1952
1953 static void
1954 gtk_delete_backward_character (GtkEntry *entry)
1955 {
1956   GtkEditable *editable;
1957   gint old_pos;
1958
1959   editable = GTK_EDITABLE (entry);
1960
1961   if (editable->selection_start_pos != editable->selection_end_pos)
1962     gtk_editable_delete_selection (editable);
1963   else
1964     {
1965       old_pos = editable->current_pos;
1966       gtk_move_backward_character (entry);
1967       gtk_editable_delete_text (editable, editable->current_pos, old_pos);
1968     }
1969 }
1970
1971 static void
1972 gtk_delete_forward_word (GtkEntry *entry)
1973 {
1974   GtkEditable *editable;
1975   gint old_pos;
1976
1977   editable = GTK_EDITABLE (entry);
1978
1979   if (editable->selection_start_pos != editable->selection_end_pos)
1980     gtk_editable_delete_selection (editable);
1981   else
1982     {
1983       old_pos = editable->current_pos;
1984       gtk_move_forward_word (entry);
1985       gtk_editable_delete_text (editable, old_pos, editable->current_pos);
1986     }
1987 }
1988
1989 static void
1990 gtk_delete_backward_word (GtkEntry *entry)
1991 {
1992   GtkEditable *editable;
1993   gint old_pos;
1994
1995   editable = GTK_EDITABLE (entry);
1996
1997   if (editable->selection_start_pos != editable->selection_end_pos)
1998     gtk_editable_delete_selection (editable);
1999   else
2000     {
2001       old_pos = editable->current_pos;
2002       gtk_move_backward_word (entry);
2003       gtk_editable_delete_text (editable, editable->current_pos, old_pos);
2004     }
2005 }
2006
2007 static void
2008 gtk_delete_line (GtkEntry *entry)
2009 {
2010   gtk_editable_delete_text (GTK_EDITABLE(entry), 0, entry->text_length);
2011 }
2012
2013 static void
2014 gtk_delete_to_line_end (GtkEntry *entry)
2015 {
2016   gtk_editable_delete_text (GTK_EDITABLE(entry), GTK_EDITABLE(entry)->current_pos, entry->text_length);
2017 }
2018
2019 static void
2020 gtk_select_word (GtkEntry *entry,
2021                  guint32   time)
2022 {
2023   GtkEditable *editable;
2024   gint start_pos;
2025   gint end_pos;
2026
2027   editable = GTK_EDITABLE (entry);
2028
2029   gtk_move_backward_word (entry);
2030   start_pos = editable->current_pos;
2031
2032   gtk_move_forward_word (entry);
2033   end_pos = editable->current_pos;
2034
2035   editable->has_selection = TRUE;
2036   gtk_entry_set_selection (editable, start_pos, end_pos);
2037   gtk_editable_claim_selection (editable, start_pos != end_pos, time);
2038 }
2039
2040 static void
2041 gtk_select_line (GtkEntry *entry,
2042                  guint32   time)
2043 {
2044   GtkEditable *editable;
2045
2046   editable = GTK_EDITABLE (entry);
2047
2048   editable->has_selection = TRUE;
2049   gtk_entry_set_selection (editable, 0, entry->text_length);
2050   gtk_editable_claim_selection (editable, entry->text_length != 0, time);
2051
2052   editable->current_pos = editable->selection_end_pos;
2053 }
2054
2055 static void
2056 gtk_entry_set_selection (GtkEditable       *editable,
2057                          gint               start,
2058                          gint               end)
2059 {
2060   g_return_if_fail (editable != NULL);
2061   g_return_if_fail (GTK_IS_ENTRY (editable));
2062
2063   if (end < 0)
2064     end = GTK_ENTRY (editable)->text_length;
2065
2066   editable->selection_start_pos = start;
2067   editable->selection_end_pos = end;
2068
2069   gtk_entry_queue_draw (GTK_ENTRY (editable));
2070 }
2071
2072 void
2073 gtk_entry_select_region  (GtkEntry       *entry,
2074                           gint            start,
2075                           gint            end)
2076 {
2077   gtk_editable_select_region (GTK_EDITABLE (entry), start, end);
2078 }
2079
2080 void
2081 gtk_entry_set_max_length (GtkEntry     *entry,
2082                           guint16       max)
2083 {
2084   g_return_if_fail (entry != NULL);
2085   g_return_if_fail (GTK_IS_ENTRY (entry));
2086
2087   if (max && entry->text_length > max)
2088         gtk_editable_delete_text(GTK_EDITABLE(entry), max, -1);
2089   entry->text_max_length = max;
2090 }
2091
2092 static void
2093 gtk_entry_style_set     (GtkWidget      *widget,
2094                          GtkStyle       *previous_style)
2095 {
2096   GtkEntry *entry;
2097   gint scroll_char;
2098
2099   g_return_if_fail (widget != NULL);
2100   g_return_if_fail (GTK_IS_ENTRY (widget));
2101
2102   if (previous_style && GTK_WIDGET_REALIZED (widget))
2103     {
2104       entry = GTK_ENTRY (widget);
2105
2106       scroll_char = gtk_entry_find_position (entry, entry->scroll_offset);
2107       gtk_entry_recompute_offsets (GTK_ENTRY (widget));
2108       entry->scroll_offset = entry->char_offset[scroll_char];
2109     }
2110 }