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 Free
  16  * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17  */
  18 #include <ctype.h>
  19 #include <string.h>
  20 #ifdef USE_XIM
  21 #include "gdk/gdkx.h"
  22 #endif
  23 #include "gdk/gdkkeysyms.h"
  24 #include "gdk/gdki18n.h"
  25 #include "gtkentry.h"
  26 #include "gtkmain.h"
  27 #include "gtkselection.h"
  28 #include "gtksignal.h"
  29
  30 #define MIN_ENTRY_WIDTH  150
  31 #define DRAW_TIMEOUT     20
  32 #define INNER_BORDER     2
  33
  34 enum {
  35   ACTIVATE,
  36   LAST_SIGNAL
  37 };
  38
  39 static void gtk_entry_class_init          (GtkEntryClass     *klass);
  40 static void gtk_entry_init                (GtkEntry          *entry);
  41 static void gtk_entry_finalize            (GtkObject         *object);
  42 static void gtk_entry_realize             (GtkWidget         *widget);
  43 static void gtk_entry_unrealize           (GtkWidget         *widget);
  44 static void gtk_entry_draw_focus          (GtkWidget         *widget);
  45 static void gtk_entry_size_request        (GtkWidget         *widget,
  46                                            GtkRequisition    *requisition);
  47 static void gtk_entry_size_allocate       (GtkWidget         *widget,
  48                                            GtkAllocation     *allocation);
  49 static void gtk_entry_make_backing_pixmap (GtkEntry *entry,
  50                                            gint width, gint height);
  51 static void gtk_entry_draw                (GtkWidget         *widget,
  52                                            GdkRectangle      *area);
  53 static gint gtk_entry_expose              (GtkWidget         *widget,
  54                                            GdkEventExpose    *event);
  55 static gint gtk_entry_button_press        (GtkWidget         *widget,
  56                                            GdkEventButton    *event);
  57 static gint gtk_entry_button_release      (GtkWidget         *widget,
  58                                            GdkEventButton    *event);
  59 static gint gtk_entry_motion_notify       (GtkWidget         *widget,
  60                                            GdkEventMotion    *event);
  61 static gint gtk_entry_key_press           (GtkWidget         *widget,
  62                                            GdkEventKey       *event);
  63 static gint gtk_entry_focus_in            (GtkWidget         *widget,
  64                                            GdkEventFocus     *event);
  65 static gint gtk_entry_focus_out           (GtkWidget         *widget,
  66                                            GdkEventFocus     *event);
  67 static void gtk_entry_draw_text           (GtkEntry          *entry);
  68 static void gtk_entry_draw_cursor         (GtkEntry          *entry);
  69 static void gtk_entry_draw_cursor_on_drawable
  70                                           (GtkEntry          *entry,
  71                                            GdkDrawable       *drawable);
  72 static void gtk_entry_queue_draw          (GtkEntry          *entry);
  73 static gint gtk_entry_timer               (gpointer           data);
  74 static gint gtk_entry_position            (GtkEntry          *entry,
  75                                            gint               x);
  76        void gtk_entry_adjust_scroll       (GtkEntry          *entry);
  77 static void gtk_entry_grow_text           (GtkEntry          *entry);
  78 static void gtk_entry_insert_text         (GtkEditable       *editable,
  79                                            const gchar       *new_text,
  80                                            gint               new_text_length,
  81                                            gint              *position);
  82 static void gtk_entry_delete_text         (GtkEditable       *editable,
  83                                            gint               start_pos,
  84                                            gint               end_pos);
  85 static void gtk_entry_update_text         (GtkEditable       *editable,
  86                                            gint               start_pos,
  87                                            gint               end_pos);
  88 static gchar *gtk_entry_get_chars         (GtkEditable       *editable,
  89                                            gint               start_pos,
  90                                            gint               end_pos);
  91
  92 static gint move_backward_character       (gchar *str, gint index);
  93 static void gtk_move_forward_character    (GtkEntry          *entry);
  94 static void gtk_move_backward_character   (GtkEntry          *entry);
  95 static void gtk_move_forward_word         (GtkEntry          *entry);
  96 static void gtk_move_backward_word        (GtkEntry          *entry);
  97 static void gtk_move_beginning_of_line    (GtkEntry          *entry);
  98 static void gtk_move_end_of_line          (GtkEntry          *entry);
  99 static void gtk_delete_forward_character  (GtkEntry          *entry);
 100 static void gtk_delete_backward_character (GtkEntry          *entry);
 101 static void gtk_delete_forward_word       (GtkEntry          *entry);
 102 static void gtk_delete_backward_word      (GtkEntry          *entry);
 103 static void gtk_delete_line               (GtkEntry          *entry);
 104 static void gtk_delete_to_line_end        (GtkEntry          *entry);
 105 static void gtk_select_word               (GtkEntry          *entry);
 106 static void gtk_select_line               (GtkEntry          *entry);
 107
 108
 109 static void gtk_entry_set_selection       (GtkEditable       *editable,
 110                                            gint               start,
 111                                            gint               end);
 112
 113 static GtkWidgetClass *parent_class = NULL;
 114 static gint entry_signals[LAST_SIGNAL] = { 0 };
 115 static GdkAtom ctext_atom = GDK_NONE;
 116
 117 static GtkTextFunction control_keys[26] =
 118 {
 119   (GtkTextFunction)gtk_move_beginning_of_line,    /* a */
 120   (GtkTextFunction)gtk_move_backward_character,   /* b */
 121   gtk_editable_copy_clipboard,                    /* c */
 122   (GtkTextFunction)gtk_delete_forward_character,  /* d */
 123   (GtkTextFunction)gtk_move_end_of_line,          /* e */
 124   (GtkTextFunction)gtk_move_forward_character,    /* f */
 125   NULL,                                           /* g */
 126   (GtkTextFunction)gtk_delete_backward_character, /* h */
 127   NULL,                                           /* i */
 128   NULL,                                           /* j */
 129   (GtkTextFunction)gtk_delete_to_line_end,        /* k */
 130   NULL,                                           /* l */
 131   NULL,                                           /* m */
 132   NULL,                                           /* n */
 133   NULL,                                           /* o */
 134   NULL,                                           /* p */
 135   NULL,                                           /* q */
 136   NULL,                                           /* r */
 137   NULL,                                           /* s */
 138   NULL,                                           /* t */
 139   (GtkTextFunction)gtk_delete_line,               /* u */
 140   gtk_editable_paste_clipboard,                   /* v */
 141   (GtkTextFunction)gtk_delete_backward_word,      /* w */
 142   gtk_editable_cut_clipboard,                     /* x */
 143   NULL,                                           /* y */
 144   NULL,                                           /* z */
 145 };
 146
 147 static GtkTextFunction alt_keys[26] =
 148 {
 149   NULL,                                           /* a */
 150   (GtkTextFunction)gtk_move_backward_word,        /* b */
 151   NULL,                                           /* c */
 152   (GtkTextFunction)gtk_delete_forward_word,       /* d */
 153   NULL,                                           /* e */
 154   (GtkTextFunction)gtk_move_forward_word,         /* f */
 155   NULL,                                           /* g */
 156   NULL,                                           /* h */
 157   NULL,                                           /* i */
 158   NULL,                                           /* j */
 159   NULL,                                           /* k */
 160   NULL,                                           /* l */
 161   NULL,                                           /* m */
 162   NULL,                                           /* n */
 163   NULL,                                           /* o */
 164   NULL,                                           /* p */
 165   NULL,                                           /* q */
 166   NULL,                                           /* r */
 167   NULL,                                           /* s */
 168   NULL,                                           /* t */
 169   NULL,                                           /* u */
 170   NULL,                                           /* v */
 171   NULL,                                           /* w */
 172   NULL,                                           /* x */
 173   NULL,                                           /* y */
 174   NULL,                                           /* z */
 175 };
 176
 177
 178 guint
 179 gtk_entry_get_type ()
 180 {
 181   static guint entry_type = 0;
 182
 183   if (!entry_type)
 184     {
 185       GtkTypeInfo entry_info =
 186       {
 187         "GtkEntry",
 188         sizeof (GtkEntry),
 189         sizeof (GtkEntryClass),
 190         (GtkClassInitFunc) gtk_entry_class_init,
 191         (GtkObjectInitFunc) gtk_entry_init,
 192         (GtkArgSetFunc) NULL,
 193         (GtkArgGetFunc) NULL,
 194       };
 195
 196       entry_type = gtk_type_unique (gtk_editable_get_type (), &entry_info);
 197     }
 198
 199   return entry_type;
 200 }
 201
 202 static void
 203 gtk_entry_class_init (GtkEntryClass *class)
 204 {
 205   GtkObjectClass *object_class;
 206   GtkWidgetClass *widget_class;
 207   GtkEditableClass *editable_class;
 208
 209   object_class = (GtkObjectClass*) class;
 210   widget_class = (GtkWidgetClass*) class;
 211   editable_class = (GtkEditableClass*) class;
 212
 213   parent_class = gtk_type_class (gtk_widget_get_type ());
 214
 215   entry_signals[ACTIVATE] =
 216     gtk_signal_new ("activate",
 217                     GTK_RUN_LAST,
 218                     object_class->type,
 219                     GTK_SIGNAL_OFFSET (GtkEntryClass, activate),
 220                     gtk_signal_default_marshaller,
 221                     GTK_TYPE_NONE, 0);
 222
 223   gtk_object_class_add_signals (object_class, entry_signals, LAST_SIGNAL);
 224
 225   object_class->finalize = gtk_entry_finalize;
 226
 227   widget_class->realize = gtk_entry_realize;
 228   widget_class->unrealize = gtk_entry_unrealize;
 229   widget_class->draw_focus = gtk_entry_draw_focus;
 230   widget_class->size_request = gtk_entry_size_request;
 231   widget_class->size_allocate = gtk_entry_size_allocate;
 232   widget_class->draw = gtk_entry_draw;
 233   widget_class->expose_event = gtk_entry_expose;
 234   widget_class->button_press_event = gtk_entry_button_press;
 235   widget_class->button_release_event = gtk_entry_button_release;
 236   widget_class->motion_notify_event = gtk_entry_motion_notify;
 237   widget_class->key_press_event = gtk_entry_key_press;
 238   widget_class->focus_in_event = gtk_entry_focus_in;
 239   widget_class->focus_out_event = gtk_entry_focus_out;
 240
 241   editable_class->insert_text = gtk_entry_insert_text;
 242   editable_class->delete_text = gtk_entry_delete_text;
 243   editable_class->update_text = gtk_entry_update_text;
 244   editable_class->get_chars   = gtk_entry_get_chars;
 245   editable_class->set_selection = gtk_entry_set_selection;
 246   editable_class->changed = (void (*)(GtkEditable *)) gtk_entry_adjust_scroll;
 247   class->activate = NULL;
 248 }
 249
 250 static void
 251 gtk_entry_init (GtkEntry *entry)
 252 {
 253   GTK_WIDGET_SET_FLAGS (entry, GTK_CAN_FOCUS);
 254
 255   entry->text_area = NULL;
 256   entry->backing_pixmap = NULL;
 257   entry->text = NULL;
 258   entry->text_size = 0;
 259   entry->text_length = 0;
 260   entry->text_max_length = 0;
 261   entry->scroll_offset = 0;
 262   entry->timer = 0;
 263   entry->visible = 1;
 264
 265   gtk_entry_grow_text (entry);
 266 }
 267
 268 GtkWidget*
 269 gtk_entry_new ()
 270 {
 271   return GTK_WIDGET (gtk_type_new (gtk_entry_get_type ()));
 272 }
 273
 274 GtkWidget*
 275 gtk_entry_new_with_max_length (guint16 max)
 276 {
 277   GtkEntry *entry;
 278   entry = gtk_type_new (gtk_entry_get_type ());
 279   entry->text_max_length = max;
 280   return GTK_WIDGET (entry);
 281 }
 282
 283 void
 284 gtk_entry_set_text (GtkEntry *entry,
 285                     const gchar *text)
 286 {
 287   gint tmp_pos;
 288
 289   GtkEditable *editable;
 290
 291   g_return_if_fail (entry != NULL);
 292   g_return_if_fail (GTK_IS_ENTRY (entry));
 293   g_return_if_fail (text != NULL);
 294
 295   editable = GTK_EDITABLE (entry);
 296
 297   gtk_entry_delete_text (GTK_EDITABLE(entry), 0, entry->text_length);
 298
 299   tmp_pos = 0;
 300   gtk_editable_insert_text (editable, text, strlen (text), &tmp_pos);
 301   editable->current_pos = tmp_pos;
 302
 303   editable->selection_start_pos = 0;
 304   editable->selection_end_pos = 0;
 305
 306   if (GTK_WIDGET_DRAWABLE (entry))
 307     gtk_entry_draw_text (entry);
 308 }
 309
 310 void
 311 gtk_entry_append_text (GtkEntry *entry,
 312                        const gchar *text)
 313 {
 314   gint tmp_pos;
 315
 316   g_return_if_fail (entry != NULL);
 317   g_return_if_fail (GTK_IS_ENTRY (entry));
 318
 319   tmp_pos = entry->text_length;
 320   gtk_editable_insert_text (GTK_EDITABLE(entry), text, strlen (text), &tmp_pos);
 321   GTK_EDITABLE(entry)->current_pos = tmp_pos;
 322 }
 323
 324 void
 325 gtk_entry_prepend_text (GtkEntry *entry,
 326                         const gchar *text)
 327 {
 328   gint tmp_pos;
 329
 330   g_return_if_fail (entry != NULL);
 331   g_return_if_fail (GTK_IS_ENTRY (entry));
 332
 333   tmp_pos = 0;
 334   gtk_editable_insert_text (GTK_EDITABLE(entry), text, strlen (text), &tmp_pos);
 335   GTK_EDITABLE(entry)->current_pos = tmp_pos;
 336 }
 337
 338 void
 339 gtk_entry_set_position (GtkEntry *entry,
 340                         gint      position)
 341 {
 342   g_return_if_fail (entry != NULL);
 343   g_return_if_fail (GTK_IS_ENTRY (entry));
 344
 345   if ((position == -1) || (position > entry->text_length))
 346     GTK_EDITABLE(entry)->current_pos = entry->text_length;
 347   else
 348     GTK_EDITABLE(entry)->current_pos = position;
 349 }
 350
 351 void
 352 gtk_entry_set_visibility (GtkEntry *entry,
 353                           gboolean visible)
 354 {
 355   g_return_if_fail (entry != NULL);
 356   g_return_if_fail (GTK_IS_ENTRY (entry));
 357
 358   entry->visible = visible;
 359 }
 360
 361 void
 362 gtk_entry_set_editable(GtkEntry *entry,
 363                        gboolean editable)
 364 {
 365   g_return_if_fail (entry != NULL);
 366   g_return_if_fail (GTK_IS_ENTRY (entry));
 367   GTK_EDITABLE(entry)->editable = editable;
 368   gtk_entry_queue_draw(entry);
 369 }
 370
 371 gchar*
 372 gtk_entry_get_text (GtkEntry *entry)
 373 {
 374   static char empty_str[2] = "";
 375
 376   g_return_val_if_fail (entry != NULL, NULL);
 377   g_return_val_if_fail (GTK_IS_ENTRY (entry), NULL);
 378
 379   if (!entry->text)
 380     return empty_str;
 381   return entry->text;
 382 }
 383
 384 static void
 385 gtk_entry_finalize (GtkObject *object)
 386 {
 387   GtkEntry *entry;
 388
 389   g_return_if_fail (object != NULL);
 390   g_return_if_fail (GTK_IS_ENTRY (object));
 391
 392   entry = GTK_ENTRY (object);
 393
 394 #ifdef USE_XIM
 395   if (GTK_EDITABLE(entry)->ic)
 396     {
 397       gdk_ic_destroy (GTK_EDITABLE(entry)->ic);
 398       GTK_EDITABLE(entry)->ic = NULL;
 399     }
 400 #endif
 401
 402   if (entry->timer)
 403     gtk_timeout_remove (entry->timer);
 404
 405   entry->text_size = 0;
 406   if (entry->text)
 407     g_free (entry->text);
 408   entry->text = NULL;
 409
 410   if (entry->backing_pixmap)
 411     gdk_pixmap_unref (entry->backing_pixmap);
 412
 413   (* GTK_OBJECT_CLASS (parent_class)->finalize) (object);
 414 }
 415
 416 static void
 417 gtk_entry_realize (GtkWidget *widget)
 418 {
 419   GtkEntry *entry;
 420   GtkEditable *editable;
 421   GdkWindowAttr attributes;
 422   gint attributes_mask;
 423
 424   g_return_if_fail (widget != NULL);
 425   g_return_if_fail (GTK_IS_ENTRY (widget));
 426
 427   GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
 428   entry = GTK_ENTRY (widget);
 429   editable = GTK_EDITABLE (widget);
 430
 431   attributes.window_type = GDK_WINDOW_CHILD;
 432   attributes.x = widget->allocation.x;
 433   attributes.y = widget->allocation.y;
 434   attributes.width = widget->allocation.width;
 435   attributes.height = widget->allocation.height;
 436   attributes.wclass = GDK_INPUT_OUTPUT;
 437   attributes.visual = gtk_widget_get_visual (widget);
 438   attributes.colormap = gtk_widget_get_colormap (widget);
 439   attributes.event_mask = gtk_widget_get_events (widget);
 440   attributes.event_mask |= (GDK_EXPOSURE_MASK |
 441                             GDK_BUTTON_PRESS_MASK |
 442                             GDK_BUTTON_RELEASE_MASK |
 443                             GDK_BUTTON1_MOTION_MASK |
 444                             GDK_BUTTON3_MOTION_MASK |
 445                             GDK_POINTER_MOTION_HINT_MASK |
 446                             GDK_ENTER_NOTIFY_MASK |
 447                             GDK_LEAVE_NOTIFY_MASK |
 448                             GDK_KEY_PRESS_MASK);
 449   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
 450
 451   widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask);
 452   gdk_window_set_user_data (widget->window, entry);
 453
 454   attributes.x = widget->style->klass->xthickness + INNER_BORDER;
 455   attributes.y = widget->style->klass->ythickness + INNER_BORDER;
 456   attributes.width = widget->allocation.width - attributes.x * 2;
 457   attributes.height = widget->allocation.height - attributes.y * 2;
 458   attributes.cursor = entry->cursor = gdk_cursor_new (GDK_XTERM);
 459   attributes_mask |= GDK_WA_CURSOR;
 460
 461   entry->text_area = gdk_window_new (widget->window, &attributes, attributes_mask);
 462   gdk_window_set_user_data (entry->text_area, entry);
 463
 464   widget->style = gtk_style_attach (widget->style, widget->window);
 465
 466   gdk_window_set_background (widget->window, &widget->style->base[GTK_STATE_NORMAL]);
 467   gdk_window_set_background (entry->text_area, &widget->style->base[GTK_STATE_NORMAL]);
 468
 469 #ifdef USE_XIM
 470   if (gdk_im_ready ())
 471     {
 472       GdkPoint spot;
 473       GdkRectangle rect;
 474       gint width, height;
 475       GdkEventMask mask;
 476       GdkIMStyle style;
 477       GdkIMStyle supported_style = GdkIMPreeditNone | GdkIMPreeditNothing |
 478                         GdkIMPreeditPosition |
 479                         GdkIMStatusNone | GdkIMStatusNothing;
 480
 481       if (widget->style && widget->style->font->type != GDK_FONT_FONTSET)
 482         supported_style &= ~GdkIMPreeditPosition;
 483
 484       style = gdk_im_decide_style (supported_style);
 485       switch (style & GdkIMPreeditMask)
 486         {
 487         case GdkIMPreeditPosition:
 488           if (widget->style && widget->style->font->type != GDK_FONT_FONTSET)
 489             {
 490               g_warning ("over-the-spot style requires fontset");
 491               break;
 492             }
 493           gdk_window_get_size (entry->text_area, &width, &height);
 494           rect.x = 0;
 495           rect.y = 0;
 496           rect.width = width;
 497           rect.height = height;
 498           spot.x = 0;
 499           spot.y = height;
 500           editable->ic = gdk_ic_new (entry->text_area, entry->text_area,
 501                                style,
 502                                "spotLocation", &spot,
 503                                "area", &rect,
 504                                "fontSet", GDK_FONT_XFONT (widget->style->font),
 505                                NULL);
 506           break;
 507         default:
 508           editable->ic = gdk_ic_new (entry->text_area, entry->text_area,
 509                                   style, NULL);
 510         }
 511
 512       if (editable->ic == NULL)
 513         g_warning ("Can't create input context.");
 514       else
 515         {
 516           GdkColormap *colormap;
 517
 518           mask = gdk_window_get_events (entry->text_area);
 519           mask |= gdk_ic_get_events (editable->ic);
 520           gdk_window_set_events (entry->text_area, mask);
 521
 522           if ((colormap = gtk_widget_get_colormap (widget)) !=
 523                 gtk_widget_get_default_colormap ())
 524             {
 525               gdk_ic_set_attr (editable->ic, "preeditAttributes",
 526                                "colorMap", GDK_COLORMAP_XCOLORMAP (colormap),
 527                                NULL);
 528             }
 529           gdk_ic_set_attr (editable->ic,"preeditAttributes",
 530                      "foreground", widget->style->fg[GTK_STATE_NORMAL].pixel,
 531                      "background", widget->style->base[GTK_STATE_NORMAL].pixel,
 532                      NULL);
 533         }
 534     }
 535 #endif
 536
 537   gdk_window_show (entry->text_area);
 538
 539   if (editable->selection_start_pos != editable->selection_end_pos)
 540     gtk_editable_claim_selection (editable, TRUE, GDK_CURRENT_TIME);
 541 }
 542
 543 static void
 544 gtk_entry_unrealize (GtkWidget *widget)
 545 {
 546   GtkEntry *entry;
 547
 548   g_return_if_fail (widget != NULL);
 549   g_return_if_fail (GTK_IS_ENTRY (widget));
 550
 551   entry = GTK_ENTRY (widget);
 552
 553   if (entry->text_area)
 554     {
 555       gdk_window_set_user_data (entry->text_area, NULL);
 556       gdk_window_destroy (entry->text_area);
 557       entry->text_area = NULL;
 558       gdk_cursor_destroy (entry->cursor);
 559       entry->cursor = NULL;
 560     }
 561
 562   if (GTK_WIDGET_CLASS (parent_class)->unrealize)
 563     (* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
 564 }
 565
 566 static void
 567 gtk_entry_draw_focus (GtkWidget *widget)
 568 {
 569   gint width, height;
 570   gint x, y;
 571
 572   g_return_if_fail (widget != NULL);
 573   g_return_if_fail (GTK_IS_ENTRY (widget));
 574
 575   if (GTK_WIDGET_DRAWABLE (widget))
 576     {
 577       x = 0;
 578       y = 0;
 579       gdk_window_get_size (widget->window, &width, &height);
 580
 581       if (GTK_WIDGET_HAS_FOCUS (widget))
 582         {
 583           x += 1;
 584           y += 1;
 585           width -= 2;
 586           height -= 2;
 587         }
 588       else
 589         {
 590           gdk_draw_rectangle (widget->window,
 591                               widget->style->base_gc[GTK_WIDGET_STATE(widget)],
 592                               FALSE, x + 2, y + 2, width - 5, height - 5);
 593         }
 594
 595       gtk_draw_shadow (widget->style, widget->window,
 596                        GTK_STATE_NORMAL, GTK_SHADOW_IN,
 597                        x, y, width, height);
 598
 599       if (GTK_WIDGET_HAS_FOCUS (widget))
 600         {
 601           gdk_window_get_size (widget->window, &width, &height);
 602           gdk_draw_rectangle (widget->window, widget->style->fg_gc[GTK_STATE_NORMAL],
 603                               FALSE, 0, 0, width - 1, height - 1);
 604         }
 605
 606       gtk_entry_draw_cursor (GTK_ENTRY (widget));
 607     }
 608 }
 609
 610 static void
 611 gtk_entry_size_request (GtkWidget      *widget,
 612                         GtkRequisition *requisition)
 613 {
 614   g_return_if_fail (widget != NULL);
 615   g_return_if_fail (GTK_IS_ENTRY (widget));
 616   g_return_if_fail (requisition != NULL);
 617
 618   requisition->width = MIN_ENTRY_WIDTH + (widget->style->klass->xthickness + INNER_BORDER) * 2;
 619   requisition->height = (widget->style->font->ascent +
 620                          widget->style->font->descent +
 621                          (widget->style->klass->ythickness + INNER_BORDER) * 2);
 622 }
 623
 624 static void
 625 gtk_entry_size_allocate (GtkWidget     *widget,
 626                          GtkAllocation *allocation)
 627 {
 628   GtkEntry *entry;
 629   GtkEditable *editable;
 630
 631   g_return_if_fail (widget != NULL);
 632   g_return_if_fail (GTK_IS_ENTRY (widget));
 633   g_return_if_fail (allocation != NULL);
 634
 635   widget->allocation = *allocation;
 636   entry = GTK_ENTRY (widget);
 637   editable = GTK_EDITABLE (widget);
 638
 639   if (GTK_WIDGET_REALIZED (widget))
 640     {
 641       gdk_window_move_resize (widget->window,
 642                               allocation->x,
 643                               allocation->y + (allocation->height - widget->requisition.height) / 2,
 644                               allocation->width, widget->requisition.height);
 645       gdk_window_move_resize (entry->text_area,
 646                               widget->style->klass->xthickness + INNER_BORDER,
 647                               widget->style->klass->ythickness + INNER_BORDER,
 648                               allocation->width - (widget->style->klass->xthickness + INNER_BORDER) * 2,
 649                               widget->requisition.height - (widget->style->klass->ythickness + INNER_BORDER) * 2);
 650
 651       entry->scroll_offset = 0;
 652       gtk_entry_adjust_scroll (entry);
 653 #ifdef USE_XIM
 654       if (editable->ic && (gdk_ic_get_style (editable->ic) & GdkIMPreeditPosition))
 655         {
 656           gint width, height;
 657           GdkRectangle rect;
 658
 659           gdk_window_get_size (entry->text_area, &width, &height);
 660           rect.x = 0;
 661           rect.y = 0;
 662           rect.width = width;
 663           rect.height = height;
 664           gdk_ic_set_attr (editable->ic, "preeditAttributes", "area", &rect, NULL);
 665         }
 666 #endif
 667     }
 668 }
 669
 670 static void
 671 gtk_entry_draw (GtkWidget    *widget,
 672                 GdkRectangle *area)
 673 {
 674   g_return_if_fail (widget != NULL);
 675   g_return_if_fail (GTK_IS_ENTRY (widget));
 676   g_return_if_fail (area != NULL);
 677
 678   if (GTK_WIDGET_DRAWABLE (widget))
 679     {
 680       gtk_widget_draw_focus (widget);
 681       gtk_entry_draw_text (GTK_ENTRY (widget));
 682     }
 683 }
 684
 685 static gint
 686 gtk_entry_expose (GtkWidget      *widget,
 687                   GdkEventExpose *event)
 688 {
 689   GtkEntry *entry;
 690
 691   g_return_val_if_fail (widget != NULL, FALSE);
 692   g_return_val_if_fail (GTK_IS_ENTRY (widget), FALSE);
 693   g_return_val_if_fail (event != NULL, FALSE);
 694
 695   entry = GTK_ENTRY (widget);
 696
 697   if (widget->window == event->window)
 698     gtk_widget_draw_focus (widget);
 699   else if (entry->text_area == event->window)
 700     gtk_entry_draw_text (GTK_ENTRY (widget));
 701
 702   return FALSE;
 703 }
 704
 705 static gint
 706 gtk_entry_button_press (GtkWidget      *widget,
 707                         GdkEventButton *event)
 708 {
 709   GtkEntry *entry;
 710   GtkEditable *editable;
 711   gint tmp_pos;
 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   if (ctext_atom == GDK_NONE)
 718     ctext_atom = gdk_atom_intern ("COMPOUND_TEXT", FALSE);
 719
 720   entry = GTK_ENTRY (widget);
 721   editable = GTK_EDITABLE (widget);
 722
 723   if (!GTK_WIDGET_HAS_FOCUS (widget))
 724     gtk_widget_grab_focus (widget);
 725
 726   if (event->button == 1)
 727     {
 728       switch (event->type)
 729         {
 730         case GDK_BUTTON_PRESS:
 731           gtk_grab_add (widget);
 732
 733           tmp_pos = gtk_entry_position (entry, event->x + entry->scroll_offset);
 734           gtk_entry_set_selection (editable, tmp_pos, tmp_pos);
 735           editable->current_pos = editable->selection_start_pos;
 736           break;
 737
 738         case GDK_2BUTTON_PRESS:
 739           gtk_select_word (entry);
 740           break;
 741
 742         case GDK_3BUTTON_PRESS:
 743           gtk_select_line (entry);
 744           break;
 745
 746         default:
 747           break;
 748         }
 749     }
 750   else if (event->type == GDK_BUTTON_PRESS)
 751     {
 752       if (event->button == 2)
 753         {
 754           if (editable->selection_start_pos == editable->selection_end_pos ||
 755               editable->has_selection)
 756             editable->current_pos = gtk_entry_position (entry, event->x + entry->scroll_offset);
 757           gtk_selection_convert (widget, GDK_SELECTION_PRIMARY,
 758                                  ctext_atom, event->time);
 759         }
 760       else
 761         {
 762           gtk_grab_add (widget);
 763
 764           tmp_pos = gtk_entry_position (entry, event->x + entry->scroll_offset);
 765           gtk_entry_set_selection (editable, tmp_pos, tmp_pos);
 766           editable->has_selection = FALSE;
 767           editable->current_pos = editable->selection_start_pos;
 768         }
 769     }
 770
 771   return FALSE;
 772 }
 773
 774 static gint
 775 gtk_entry_button_release (GtkWidget      *widget,
 776                           GdkEventButton *event)
 777 {
 778   GtkEntry *entry;
 779   GtkEditable *editable;
 780
 781   g_return_val_if_fail (widget != NULL, FALSE);
 782   g_return_val_if_fail (GTK_IS_ENTRY (widget), FALSE);
 783   g_return_val_if_fail (event != NULL, FALSE);
 784
 785   if (event->button == 1)
 786     {
 787       entry = GTK_ENTRY (widget);
 788       editable = GTK_EDITABLE (widget);
 789
 790       gtk_grab_remove (widget);
 791
 792       editable->has_selection = FALSE;
 793       if (editable->selection_start_pos != editable->selection_end_pos)
 794         {
 795           if (gtk_selection_owner_set (widget,
 796                                        GDK_SELECTION_PRIMARY,
 797                                        event->time))
 798             {
 799               editable->has_selection = TRUE;
 800               gtk_entry_queue_draw (entry);
 801             }
 802         }
 803       else
 804         {
 805           if (gdk_selection_owner_get (GDK_SELECTION_PRIMARY) == widget->window)
 806             gtk_selection_owner_set (NULL, GDK_SELECTION_PRIMARY, event->time);
 807         }
 808     }
 809   else if (event->button == 3)
 810     {
 811       gtk_grab_remove (widget);
 812       if (gdk_selection_owner_get (GDK_SELECTION_PRIMARY) == widget->window)
 813         gtk_selection_owner_set (NULL, GDK_SELECTION_PRIMARY, event->time);
 814     }
 815
 816   return FALSE;
 817 }
 818
 819 static gint
 820 gtk_entry_motion_notify (GtkWidget      *widget,
 821                          GdkEventMotion *event)
 822 {
 823   GtkEntry *entry;
 824   gint x;
 825
 826   g_return_val_if_fail (widget != NULL, FALSE);
 827   g_return_val_if_fail (GTK_IS_ENTRY (widget), FALSE);
 828   g_return_val_if_fail (event != NULL, FALSE);
 829
 830   entry = GTK_ENTRY (widget);
 831
 832   x = event->x;
 833   if (event->is_hint || (entry->text_area != event->window))
 834     gdk_window_get_pointer (entry->text_area, &x, NULL, NULL);
 835
 836   GTK_EDITABLE(entry)->selection_end_pos = gtk_entry_position (entry, event->x + entry->scroll_offset);
 837   GTK_EDITABLE(entry)->current_pos = GTK_EDITABLE(entry)->selection_end_pos;
 838   gtk_entry_adjust_scroll (entry);
 839   gtk_entry_queue_draw (entry);
 840
 841   return FALSE;
 842 }
 843
 844 static gint
 845 gtk_entry_key_press (GtkWidget   *widget,
 846                      GdkEventKey *event)
 847 {
 848   GtkEntry *entry;
 849   GtkEditable *editable;
 850
 851   gint return_val;
 852   gint key;
 853   gint tmp_pos;
 854   gint extend_selection;
 855   gint extend_start;
 856
 857   g_return_val_if_fail (widget != NULL, FALSE);
 858   g_return_val_if_fail (GTK_IS_ENTRY (widget), FALSE);
 859   g_return_val_if_fail (event != NULL, FALSE);
 860
 861   entry = GTK_ENTRY (widget);
 862   editable = GTK_EDITABLE (widget);
 863   return_val = FALSE;
 864
 865   if(editable->editable == FALSE)
 866     return FALSE;
 867
 868   extend_selection = event->state & GDK_SHIFT_MASK;
 869   extend_start = FALSE;
 870
 871   if (extend_selection)
 872     {
 873       if (editable->selection_start_pos == editable->selection_end_pos)
 874         {
 875           editable->selection_start_pos = editable->current_pos;
 876           editable->selection_end_pos = editable->current_pos;
 877         }
 878
 879       extend_start = (editable->current_pos == editable->selection_start_pos);
 880     }
 881
 882   switch (event->keyval)
 883     {
 884     case GDK_BackSpace:
 885       return_val = TRUE;
 886       if (editable->selection_start_pos != editable->selection_end_pos)
 887         gtk_editable_delete_selection (editable);
 888       else if (event->state & GDK_CONTROL_MASK)
 889         gtk_delete_backward_word (entry);
 890       else
 891         gtk_delete_backward_character (entry);
 892       break;
 893     case GDK_Clear:
 894       return_val = TRUE;
 895       gtk_delete_line (entry);
 896       break;
 897      case GDK_Insert:
 898        return_val = TRUE;
 899        if (event->state & GDK_SHIFT_MASK)
 900          {
 901            extend_selection = FALSE;
 902            gtk_editable_paste_clipboard (editable, event);
 903          }
 904        else if (event->state & GDK_CONTROL_MASK)
 905          {
 906            gtk_editable_copy_clipboard (editable, event);
 907          }
 908        else
 909          {
 910            /* gtk_toggle_insert(entry) -- IMPLEMENT */
 911          }
 912        break;
 913     case GDK_Delete:
 914       return_val = TRUE;
 915       if (event->state & GDK_CONTROL_MASK)
 916         gtk_delete_line (entry);
 917       else if (event->state & GDK_SHIFT_MASK)
 918         gtk_editable_cut_clipboard (editable, event);
 919       else
 920         gtk_delete_forward_character (entry);
 921       break;
 922     case GDK_Home:
 923       return_val = TRUE;
 924       gtk_move_beginning_of_line (entry);
 925       break;
 926     case GDK_End:
 927       return_val = TRUE;
 928       gtk_move_end_of_line (entry);
 929       break;
 930     case GDK_Left:
 931       return_val = TRUE;
 932       gtk_move_backward_character (entry);
 933       break;
 934     case GDK_Right:
 935       return_val = TRUE;
 936       gtk_move_forward_character (entry);
 937       break;
 938     case GDK_Return:
 939       return_val = TRUE;
 940       gtk_signal_emit (GTK_OBJECT (entry), entry_signals[ACTIVATE]);
 941       break;
 942     /* The next two keys should not be inserted literally. Any others ??? */
 943     case GDK_Tab:
 944     case GDK_Escape:
 945       break;
 946     default:
 947       if ((event->keyval >= 0x20) && (event->keyval <= 0xFF))
 948         {
 949           key = event->keyval;
 950
 951           if (event->state & GDK_CONTROL_MASK)
 952             {
 953               if ((key >= 'A') && (key <= 'Z'))
 954                 key -= 'A' - 'a';
 955
 956               if ((key >= 'a') && (key <= 'z') && control_keys[key - 'a'])
 957                 {
 958                   (* control_keys[key - 'a']) (editable, event);
 959                   return_val = TRUE;
 960                 }
 961               break;
 962             }
 963           else if (event->state & GDK_MOD1_MASK)
 964             {
 965               if ((key >= 'A') && (key <= 'Z'))
 966                 key -= 'A' - 'a';
 967
 968               if ((key >= 'a') && (key <= 'z') && alt_keys[key - 'a'])
 969                 {
 970                   (* alt_keys[key - 'a']) (editable, event);
 971                   return_val = TRUE;
 972                 }
 973               break;
 974             }
 975         }
 976       if (event->length > 0)
 977         {
 978           extend_selection = FALSE;
 979           gtk_editable_delete_selection (editable);
 980
 981           tmp_pos = editable->current_pos;
 982           gtk_editable_insert_text (editable, event->string, event->length, &tmp_pos);
 983           editable->current_pos = tmp_pos;
 984
 985           return_val = TRUE;
 986         }
 987       break;
 988     }
 989
 990   if (return_val)
 991     {
 992       if (extend_selection)
 993         {
 994           if (editable->current_pos < editable->selection_start_pos)
 995             editable->selection_start_pos = editable->current_pos;
 996           else if (editable->current_pos > editable->selection_end_pos)
 997             editable->selection_end_pos = editable->current_pos;
 998           else
 999             {
1000               if (extend_start)
1001                 editable->selection_start_pos = editable->current_pos;
1002               else
1003                 editable->selection_end_pos = editable->current_pos;
1004             }
1005         }
1006       else
1007         {
1008           editable->selection_start_pos = 0;
1009           editable->selection_end_pos = 0;
1010         }
1011
1012       gtk_editable_claim_selection (editable,
1013                                     editable->selection_start_pos != editable->selection_end_pos,
1014                                     event->time);
1015
1016       gtk_entry_adjust_scroll (entry);
1017       gtk_entry_queue_draw (entry);
1018     }
1019
1020   return return_val;
1021 }
1022
1023 static gint
1024 gtk_entry_focus_in (GtkWidget     *widget,
1025                     GdkEventFocus *event)
1026 {
1027   g_return_val_if_fail (widget != NULL, FALSE);
1028   g_return_val_if_fail (GTK_IS_ENTRY (widget), FALSE);
1029   g_return_val_if_fail (event != NULL, FALSE);
1030
1031   GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
1032   gtk_widget_draw_focus (widget);
1033
1034 #ifdef USE_XIM
1035   if (GTK_EDITABLE(widget)->ic)
1036     gdk_im_begin (GTK_EDITABLE(widget)->ic, GTK_ENTRY(widget)->text_area);
1037 #endif
1038
1039   return FALSE;
1040 }
1041
1042 static gint
1043 gtk_entry_focus_out (GtkWidget     *widget,
1044                      GdkEventFocus *event)
1045 {
1046   g_return_val_if_fail (widget != NULL, FALSE);
1047   g_return_val_if_fail (GTK_IS_ENTRY (widget), FALSE);
1048   g_return_val_if_fail (event != NULL, FALSE);
1049
1050   GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
1051   gtk_widget_draw_focus (widget);
1052
1053 #ifdef USE_XIM
1054   gdk_im_end ();
1055 #endif
1056
1057   return FALSE;
1058 }
1059
1060 static void
1061 gtk_entry_make_backing_pixmap (GtkEntry *entry, gint width, gint height)
1062 {
1063   gint pixmap_width, pixmap_height;
1064
1065   if (!entry->backing_pixmap)
1066     {
1067       /* allocate */
1068       entry->backing_pixmap = gdk_pixmap_new (entry->text_area,
1069                                               width, height,
1070                                               -1);
1071     }
1072   else
1073     {
1074       /* reallocate if sizes don't match */
1075       gdk_window_get_size (entry->backing_pixmap,
1076                            &pixmap_width, &pixmap_height);
1077       if ((pixmap_width != width) || (pixmap_height != height))
1078         {
1079           gdk_pixmap_unref (entry->backing_pixmap);
1080           entry->backing_pixmap = gdk_pixmap_new (entry->text_area,
1081                                                   width, height,
1082                                                   -1);
1083         }
1084     }
1085 }
1086
1087 static void
1088 gtk_entry_draw_text (GtkEntry *entry)
1089 {
1090   GtkWidget *widget;
1091   GtkEditable *editable;
1092   GtkStateType selected_state;
1093   gint selection_start_pos;
1094   gint selection_end_pos;
1095   gint selection_start_xoffset;
1096   gint selection_end_xoffset;
1097   gint width, height;
1098   gint y;
1099   GdkDrawable *drawable;
1100   gint use_backing_pixmap;
1101
1102   g_return_if_fail (entry != NULL);
1103   g_return_if_fail (GTK_IS_ENTRY (entry));
1104
1105   if (entry->timer)
1106     {
1107       gtk_timeout_remove (entry->timer);
1108       entry->timer = 0;
1109     }
1110
1111   if (!entry->visible)
1112     {
1113       gtk_entry_draw_cursor (entry);
1114       return;
1115     }
1116
1117   if (GTK_WIDGET_DRAWABLE (entry))
1118     {
1119       widget = GTK_WIDGET (entry);
1120       editable = GTK_EDITABLE (entry);
1121
1122       if (!entry->text)
1123         {
1124           gdk_window_clear (entry->text_area);
1125           if (editable->editable)
1126             gtk_entry_draw_cursor (entry);
1127           return;
1128         }
1129
1130       gdk_window_get_size (entry->text_area, &width, &height);
1131
1132       /*
1133         If the widget has focus, draw on a backing pixmap to avoid flickering
1134         and copy it to the text_area.
1135         Otherwise draw to text_area directly for better speed.
1136       */
1137       use_backing_pixmap = GTK_WIDGET_HAS_FOCUS (widget) && (entry->text != NULL);
1138       if (use_backing_pixmap)
1139         {
1140           gtk_entry_make_backing_pixmap (entry, width, height);
1141           drawable = entry->backing_pixmap;
1142           gdk_draw_rectangle (drawable,
1143                               widget->style->base_gc[GTK_WIDGET_STATE(widget)],
1144                               TRUE,
1145                               0, 0,
1146                               width,
1147                               height);
1148         }
1149       else
1150         {
1151           drawable = entry->text_area;
1152           gdk_window_clear (entry->text_area);
1153         }
1154
1155       y = (height - (widget->style->font->ascent + widget->style->font->descent)) / 2;
1156       y += widget->style->font->ascent;
1157
1158       if (editable->selection_start_pos != editable->selection_end_pos)
1159         {
1160           selected_state = GTK_STATE_SELECTED;
1161           if (!editable->has_selection)
1162             selected_state = GTK_STATE_ACTIVE;
1163
1164           selection_start_pos = MIN (editable->selection_start_pos, editable->selection_end_pos);
1165           selection_end_pos = MAX (editable->selection_start_pos, editable->selection_end_pos);
1166
1167           selection_start_xoffset = gdk_text_width (widget->style->font,
1168                                                     entry->text,
1169                                                     selection_start_pos);
1170           selection_end_xoffset = gdk_text_width (widget->style->font,
1171                                                   entry->text,
1172                                                   selection_end_pos);
1173
1174           if (selection_start_pos > 0)
1175             gdk_draw_text (drawable, widget->style->font,
1176                            widget->style->fg_gc[GTK_STATE_NORMAL],
1177                            -entry->scroll_offset, y,
1178                            entry->text, selection_start_pos);
1179
1180           gdk_draw_rectangle (drawable,
1181                               widget->style->bg_gc[selected_state],
1182                               TRUE,
1183                               -entry->scroll_offset + selection_start_xoffset,
1184                               0,
1185                               selection_end_xoffset - selection_start_xoffset,
1186                               -1);
1187
1188           gdk_draw_text (drawable, widget->style->font,
1189                          widget->style->fg_gc[selected_state],
1190                          -entry->scroll_offset + selection_start_xoffset, y,
1191                          entry->text + selection_start_pos,
1192                          selection_end_pos - selection_start_pos);
1193
1194           if (selection_end_pos < entry->text_length)
1195             gdk_draw_string (drawable, widget->style->font,
1196                              widget->style->fg_gc[GTK_STATE_NORMAL],
1197                              -entry->scroll_offset + selection_end_xoffset, y,
1198                              entry->text + selection_end_pos);
1199         }
1200       else
1201         {
1202           GdkGCValues values;
1203
1204           gdk_gc_get_values (widget->style->fg_gc[GTK_STATE_NORMAL], &values);
1205           gdk_draw_string (drawable, widget->style->font,
1206                            widget->style->fg_gc[GTK_STATE_NORMAL],
1207                            -entry->scroll_offset, y,
1208                            entry->text);
1209         }
1210
1211       if (editable->editable)
1212         gtk_entry_draw_cursor_on_drawable (entry, drawable);
1213
1214       if (use_backing_pixmap)
1215         gdk_draw_pixmap(entry->text_area,
1216                         widget->style->fg_gc[GTK_STATE_NORMAL],
1217                         entry->backing_pixmap,
1218                         0, 0, 0, 0, width, height);
1219     }
1220 }
1221
1222 static void
1223 gtk_entry_draw_cursor (GtkEntry *entry)
1224 {
1225   g_return_if_fail (entry != NULL);
1226   g_return_if_fail (GTK_IS_ENTRY (entry));
1227
1228   gtk_entry_draw_cursor_on_drawable (entry, entry->text_area);
1229 }
1230
1231 static void
1232 gtk_entry_draw_cursor_on_drawable (GtkEntry *entry, GdkDrawable *drawable)
1233 {
1234   GtkWidget *widget;
1235   GtkEditable *editable;
1236   GdkGC *gc;
1237   gint xoffset;
1238   gint text_area_height;
1239
1240   g_return_if_fail (entry != NULL);
1241   g_return_if_fail (GTK_IS_ENTRY (entry));
1242
1243   if (GTK_WIDGET_DRAWABLE (entry))
1244     {
1245       widget = GTK_WIDGET (entry);
1246       editable = GTK_EDITABLE (entry);
1247
1248       if (editable->current_pos > 0 && entry->visible)
1249         xoffset = gdk_text_width (widget->style->font, entry->text, editable->current_pos);
1250       else
1251         xoffset = 0;
1252       xoffset -= entry->scroll_offset;
1253
1254       if (GTK_WIDGET_HAS_FOCUS (widget) &&
1255           (editable->selection_start_pos == editable->selection_end_pos))
1256         gc = widget->style->fg_gc[GTK_STATE_NORMAL];
1257       else
1258         gc = widget->style->base_gc[GTK_WIDGET_STATE(widget)];
1259
1260       gdk_window_get_size (entry->text_area, NULL, &text_area_height);
1261       gdk_draw_line (drawable, gc, xoffset, 0, xoffset, text_area_height);
1262 #ifdef USE_XIM
1263       if (gdk_im_ready() && editable->ic &&
1264           gdk_ic_get_style (editable->ic) & GdkIMPreeditPosition)
1265         {
1266           GdkPoint spot;
1267
1268           spot.x = xoffset;
1269           spot.y = (text_area_height + (widget->style->font->ascent - widget->style->font->descent) + 1) / 2;
1270           gdk_ic_set_attr (editable->ic, "preeditAttributes", "spotLocation", &spot, NULL);
1271         }
1272 #endif
1273     }
1274 }
1275
1276 static void
1277 gtk_entry_queue_draw (GtkEntry *entry)
1278 {
1279   g_return_if_fail (entry != NULL);
1280   g_return_if_fail (GTK_IS_ENTRY (entry));
1281
1282   if (!entry->timer)
1283     entry->timer = gtk_timeout_add (DRAW_TIMEOUT, gtk_entry_timer, entry);
1284 }
1285
1286 static gint
1287 gtk_entry_timer (gpointer data)
1288 {
1289   GtkEntry *entry;
1290
1291   g_return_val_if_fail (data != NULL, FALSE);
1292
1293   entry = GTK_ENTRY (data);
1294   entry->timer = 0;
1295   gtk_entry_draw_text (entry);
1296
1297   return FALSE;
1298 }
1299
1300 static gint
1301 gtk_entry_position (GtkEntry *entry,
1302                     gint      x)
1303 {
1304   gint return_val;
1305   gint char_width;
1306   gint sum;
1307   gint i;
1308   gint len;
1309
1310   g_return_val_if_fail (entry != NULL, 0);
1311   g_return_val_if_fail (GTK_IS_ENTRY (entry), 0);
1312
1313   i = 0;
1314   sum = 0;
1315
1316   if (x > sum)
1317     {
1318       for (; i < entry->text_length; i+=len)
1319         {
1320           len = mblen (entry->text+i, MB_CUR_MAX);
1321           /* character not supported in current locale is included */
1322           if (len < 1)
1323             len = 1;
1324           char_width = gdk_text_width (GTK_WIDGET (entry)->style->font,
1325                                        entry->text + i, len);
1326
1327           if (x < (sum + char_width / 2))
1328             break;
1329           sum += char_width;
1330         }
1331     }
1332
1333   return_val = i;
1334
1335   return return_val;
1336 }
1337
1338 void
1339 gtk_entry_adjust_scroll (GtkEntry *entry)
1340 {
1341   gint xoffset;
1342   gint text_area_width;
1343
1344   g_return_if_fail (entry != NULL);
1345   g_return_if_fail (GTK_IS_ENTRY (entry));
1346
1347   if (!entry->text_area)
1348     return;
1349
1350   gdk_window_get_size (entry->text_area, &text_area_width, NULL);
1351
1352   if (GTK_EDITABLE(entry)->current_pos > 0)
1353     xoffset = gdk_text_width (GTK_WIDGET (entry)->style->font, entry->text, GTK_EDITABLE(entry)->current_pos);
1354   else
1355     xoffset = 0;
1356   xoffset -= entry->scroll_offset;
1357
1358   if (xoffset < 0)
1359     entry->scroll_offset += xoffset;
1360   else if (xoffset > text_area_width)
1361     entry->scroll_offset += (xoffset - text_area_width) + 1;
1362 }
1363
1364 static void
1365 gtk_entry_grow_text (GtkEntry *entry)
1366 {
1367   gint previous_size;
1368   gint i;
1369
1370   g_return_if_fail (entry != NULL);
1371   g_return_if_fail (GTK_IS_ENTRY (entry));
1372
1373   previous_size = entry->text_size;
1374   if (!entry->text_size)
1375     entry->text_size = 128;
1376   else
1377     entry->text_size *= 2;
1378   entry->text = g_realloc (entry->text, entry->text_size);
1379
1380   for (i = previous_size; i < entry->text_size; i++)
1381     entry->text[i] = '\0';
1382 }
1383
1384 static void
1385 gtk_entry_insert_text (GtkEditable *editable,
1386                        const gchar *new_text,
1387                        gint         new_text_length,
1388                        gint        *position)
1389 {
1390   gchar *text;
1391   gint start_pos;
1392   gint end_pos;
1393   gint last_pos;
1394   gint i;
1395
1396   GtkEntry *entry;
1397
1398   g_return_if_fail (entry != NULL);
1399   g_return_if_fail (GTK_IS_ENTRY (editable));
1400
1401   entry = GTK_ENTRY (editable);
1402
1403   /* Make sure we do not exceed the maximum size of the entry. */
1404   if (entry->text_max_length != 0 &&
1405       new_text_length + entry->text_length > entry->text_max_length)
1406     new_text_length = entry->text_max_length - entry->text_length;
1407
1408   /* Don't insert anything, if there was nothing to insert. */
1409   if (new_text_length <= 0)
1410     return;
1411
1412   start_pos = *position;
1413   end_pos = start_pos + new_text_length;
1414   last_pos = new_text_length + entry->text_length;
1415
1416   if (editable->selection_start_pos >= *position)
1417     editable->selection_start_pos += new_text_length;
1418   if (editable->selection_end_pos >= *position)
1419     editable->selection_end_pos += new_text_length;
1420
1421   while (last_pos >= entry->text_size)
1422     gtk_entry_grow_text (entry);
1423
1424   text = entry->text;
1425   for (i = last_pos - 1; i >= end_pos; i--)
1426     text[i] = text[i- (end_pos - start_pos)];
1427   for (i = start_pos; i < end_pos; i++)
1428     text[i] = new_text[i - start_pos];
1429
1430   entry->text_length += new_text_length;
1431   *position = end_pos;
1432
1433   gtk_entry_queue_draw (entry);
1434 }
1435
1436 static void
1437 gtk_entry_delete_text (GtkEditable *editable,
1438                        gint         start_pos,
1439                        gint         end_pos)
1440 {
1441   gchar *text;
1442   gint deletion_length;
1443   gint i;
1444
1445   GtkEntry *entry;
1446
1447   g_return_if_fail (entry != NULL);
1448   g_return_if_fail (GTK_IS_ENTRY (editable));
1449
1450   entry = GTK_ENTRY (editable);
1451
1452   if (editable->selection_start_pos > start_pos)
1453     editable->selection_start_pos -= MIN(end_pos, editable->selection_start_pos) - start_pos;
1454   if (editable->selection_end_pos > start_pos)
1455     editable->selection_end_pos -= MIN(end_pos, editable->selection_end_pos) - start_pos;
1456
1457   if (end_pos < 0)
1458     end_pos = entry->text_length;
1459
1460   if ((start_pos < end_pos) &&
1461       (start_pos >= 0) &&
1462       (end_pos <= entry->text_length))
1463     {
1464       text = entry->text;
1465       deletion_length = end_pos - start_pos;
1466
1467       for (i = end_pos; i < entry->text_length; i++)
1468         text[i - deletion_length] = text[i];
1469
1470       for (i = entry->text_length - deletion_length; i < entry->text_length; i++)
1471         text[i] = '\0';
1472
1473       entry->text_length -= deletion_length;
1474       editable->current_pos = start_pos;
1475     }
1476
1477   gtk_entry_queue_draw (entry);
1478 }
1479
1480 static void
1481 gtk_entry_update_text (GtkEditable *editable,
1482                        gint         start_pos,
1483                        gint         end_pos)
1484 {
1485   gtk_entry_queue_draw (GTK_ENTRY(editable));
1486 }
1487
1488 gchar *
1489 gtk_entry_get_chars      (GtkEditable   *editable,
1490                           gint           start_pos,
1491                           gint           end_pos)
1492 {
1493   gchar *retval;
1494   GtkEntry *entry;
1495   gchar c;
1496
1497   g_return_val_if_fail (entry != NULL, NULL);
1498   g_return_val_if_fail (GTK_IS_ENTRY (editable), NULL);
1499
1500   entry = GTK_ENTRY (editable);
1501
1502   if (end_pos < 0)
1503     end_pos = entry->text_length;
1504
1505   start_pos = MIN(entry->text_length, start_pos);
1506   end_pos = MIN(entry->text_length, end_pos);
1507
1508   c = entry->text[end_pos];
1509   entry->text[end_pos] = '\0';
1510
1511   retval = g_strdup (&entry->text[start_pos]);
1512
1513   entry->text[end_pos] = c;
1514
1515   return retval;
1516 }
1517
1518 static void
1519 gtk_move_forward_character (GtkEntry *entry)
1520 {
1521   gint len;
1522
1523   GtkEditable *editable;
1524   editable = GTK_EDITABLE (entry);
1525
1526   if (editable->current_pos < entry->text_length)
1527     {
1528       len = mblen (entry->text+editable->current_pos, MB_CUR_MAX);
1529       editable->current_pos += (len>0)? len:1;
1530     }
1531   if (editable->current_pos > entry->text_length)
1532     editable->current_pos = entry->text_length;
1533 }
1534
1535 static gint
1536 move_backward_character (gchar *str, gint index)
1537 {
1538   gint i;
1539   gint len;
1540
1541   if (index <= 0)
1542     return -1;
1543   for (i=0,len=0; i<index; i+=len)
1544     {
1545       len = mblen (str+i, MB_CUR_MAX);
1546       if (len<1)
1547         return i;
1548     }
1549   return i-len;
1550 }
1551
1552 static void
1553 gtk_move_backward_character (GtkEntry *entry)
1554 {
1555   GtkEditable *editable;
1556   editable = GTK_EDITABLE (entry);
1557
1558   /* this routine is correct only if string is state-independent-encoded */
1559
1560   if (0 < editable->current_pos)
1561     {
1562       editable->current_pos = move_backward_character (entry->text,
1563                                                     editable->current_pos);
1564       if (editable->current_pos < 0)
1565         editable->current_pos = 0;
1566     }
1567 }
1568
1569 static void
1570 gtk_move_forward_word (GtkEntry *entry)
1571 {
1572   gchar *text;
1573   gint i;
1574   wchar_t c;
1575   gint len;
1576
1577   GtkEditable *editable;
1578   editable = GTK_EDITABLE (entry);
1579
1580   if (entry->text)
1581     {
1582       text = entry->text;
1583       i = editable->current_pos;
1584
1585       len = mbtowc (&c, text+i, MB_CUR_MAX);
1586       if (!iswalnum(c))
1587         for (; i < entry->text_length; i+=len)
1588           {
1589             len = mbtowc (&c, text+i, MB_CUR_MAX);
1590             if (len < 1 || iswalnum(c))
1591               break;
1592           }
1593
1594       for (; i < entry->text_length; i+=len)
1595         {
1596           len = mbtowc (&c, text+i, MB_CUR_MAX);
1597           if (len < 1 || !iswalnum(c))
1598             break;
1599         }
1600
1601       editable->current_pos = i;
1602       if (editable->current_pos > entry->text_length)
1603         editable->current_pos = entry->text_length;
1604     }
1605 }
1606
1607 static void
1608 gtk_move_backward_word (GtkEntry *entry)
1609 {
1610   gchar *text;
1611   gint i;
1612   wchar_t c;
1613   gint len;
1614
1615   GtkEditable *editable;
1616   editable = GTK_EDITABLE (entry);
1617
1618   if (entry->text)
1619     {
1620       text = entry->text;
1621       i=move_backward_character(text, editable->current_pos);
1622       if (i < 0) /* Per */
1623         {
1624           editable->selection_start_pos = 0;
1625           editable->selection_end_pos = 0;
1626           return;
1627         }
1628
1629       len = mbtowc (&c, text+i, MB_CUR_MAX);
1630       if (!iswalnum(c))
1631         for (; i >= 0; i=move_backward_character(text, i))
1632           {
1633             len = mbtowc (&c, text+i, MB_CUR_MAX);
1634             if (iswalnum(c))
1635               break;
1636           }
1637
1638       for (; i >= 0; i=move_backward_character(text, i))
1639         {
1640           len = mbtowc (&c, text+i, MB_CUR_MAX);
1641           if (!iswalnum(c))
1642             {
1643               i += len;
1644               break;
1645             }
1646         }
1647
1648       if (i < 0)
1649         i = 0;
1650
1651       editable->current_pos = i;
1652     }
1653 }
1654
1655 static void
1656 gtk_move_beginning_of_line (GtkEntry *entry)
1657 {
1658   GTK_EDITABLE(entry)->current_pos = 0;
1659 }
1660
1661 static void
1662 gtk_move_end_of_line (GtkEntry *entry)
1663 {
1664   GTK_EDITABLE(entry)->current_pos = entry->text_length;
1665 }
1666
1667 static void
1668 gtk_delete_forward_character (GtkEntry *entry)
1669 {
1670   gint old_pos;
1671
1672   GtkEditable *editable;
1673   editable = GTK_EDITABLE (entry);
1674
1675   if (editable->selection_start_pos != editable->selection_end_pos)
1676     gtk_editable_delete_selection (editable);
1677   else
1678     {
1679       old_pos = editable->current_pos;
1680       gtk_move_forward_character (entry);
1681       gtk_editable_delete_text (editable, old_pos, editable->current_pos);
1682     }
1683 }
1684
1685 static void
1686 gtk_delete_backward_character (GtkEntry *entry)
1687 {
1688   gint old_pos;
1689
1690   GtkEditable *editable;
1691   editable = GTK_EDITABLE (entry);
1692
1693   if (editable->selection_start_pos != editable->selection_end_pos)
1694     gtk_editable_delete_selection (editable);
1695   else
1696     {
1697       old_pos = editable->current_pos;
1698       gtk_move_backward_character (entry);
1699       gtk_editable_delete_text (editable, editable->current_pos, old_pos);
1700     }
1701 }
1702
1703 static void
1704 gtk_delete_forward_word (GtkEntry *entry)
1705 {
1706   gint old_pos;
1707
1708   GtkEditable *editable;
1709   editable = GTK_EDITABLE (entry);
1710
1711   if (editable->selection_start_pos != editable->selection_end_pos)
1712     gtk_editable_delete_selection (editable);
1713   else
1714     {
1715       old_pos = editable->current_pos;
1716       gtk_move_forward_word (entry);
1717       gtk_editable_delete_text (editable, old_pos, editable->current_pos);
1718     }
1719 }
1720
1721 static void
1722 gtk_delete_backward_word (GtkEntry *entry)
1723 {
1724   gint old_pos;
1725
1726   GtkEditable *editable;
1727   editable = GTK_EDITABLE (entry);
1728
1729   if (editable->selection_start_pos != editable->selection_end_pos)
1730     gtk_editable_delete_selection (editable);
1731   else
1732     {
1733       old_pos = editable->current_pos;
1734       gtk_move_backward_word (entry);
1735       gtk_editable_delete_text (editable, editable->current_pos, old_pos);
1736     }
1737 }
1738
1739 static void
1740 gtk_delete_line (GtkEntry *entry)
1741 {
1742   gtk_editable_delete_text (GTK_EDITABLE(entry), 0, entry->text_length);
1743 }
1744
1745 static void
1746 gtk_delete_to_line_end (GtkEntry *entry)
1747 {
1748   gtk_editable_delete_text (GTK_EDITABLE(entry), GTK_EDITABLE(entry)->current_pos, entry->text_length);
1749 }
1750
1751 static void
1752 gtk_select_word (GtkEntry *entry)
1753 {
1754   gint start_pos;
1755   gint end_pos;
1756
1757   GtkEditable *editable;
1758   editable = GTK_EDITABLE (entry);
1759
1760   gtk_move_backward_word (entry);
1761   start_pos = editable->current_pos;
1762
1763   gtk_move_forward_word (entry);
1764   end_pos = editable->current_pos;
1765
1766   gtk_entry_set_selection (editable, start_pos, end_pos);
1767 }
1768
1769 static void
1770 gtk_select_line (GtkEntry *entry)
1771 {
1772   GtkEditable *editable;
1773   editable = GTK_EDITABLE (entry);
1774
1775   gtk_entry_set_selection (editable, 0, entry->text_length);
1776   editable->current_pos = editable->selection_end_pos;
1777 }
1778
1779 static void
1780 gtk_entry_set_selection       (GtkEditable       *editable,
1781                                gint               start,
1782                                gint               end)
1783 {
1784   g_return_if_fail (GTK_IS_ENTRY (editable));
1785
1786   if (end < 0)
1787     end = GTK_ENTRY (editable)->text_length;
1788
1789   editable->selection_start_pos = start;
1790   editable->selection_end_pos = end;
1791
1792   gtk_entry_queue_draw (GTK_ENTRY (editable));
1793 }
1794
1795 void
1796 gtk_entry_select_region  (GtkEntry       *entry,
1797                           gint            start,
1798                           gint            end)
1799 {
1800   gtk_editable_select_region (GTK_EDITABLE(entry), start, end);
1801 }
1802