src/text-context.cpp

   1 #define __SP_TEXT_CONTEXT_C__
   2
   3 /*
   4  * SPTextContext
   5  *
   6  * Authors:
   7  *   Lauris Kaplinski <lauris@kaplinski.com>
   8  *   bulia byak <buliabyak@users.sf.net>
   9  *
  10  * Copyright (C) 1999-2005 authors
  11  * Copyright (C) 2001 Ximian, Inc.
  12  *
  13  * Released under GNU GPL, read the file 'COPYING' for more information
  14  */
  15
  16 #ifdef HAVE_CONFIG_H
  17 # include <config.h>
  18 #endif
  19
  20 #include <gdk/gdkkeysyms.h>
  21 #include <gtk/gtkmain.h>
  22 #include <display/sp-ctrlline.h>
  23 #include <display/sodipodi-ctrlrect.h>
  24 #include <display/sp-ctrlquadr.h>
  25 #include <gtk/gtkimmulticontext.h>
  26 #include <gtkmm/clipboard.h>
  27
  28 #include "macros.h"
  29 #include "sp-text.h"
  30 #include "sp-flowtext.h"
  31 #include "document.h"
  32 #include "sp-namedview.h"
  33 #include "style.h"
  34 #include "selection.h"
  35 #include "desktop.h"
  36 #include "desktop-style.h"
  37 #include "desktop-handles.h"
  38 #include "desktop-affine.h"
  39 #include "message-stack.h"
  40 #include "message-context.h"
  41 #include "pixmaps/cursor-text.xpm"
  42 #include "pixmaps/cursor-text-insert.xpm"
  43 #include <glibmm/i18n.h>
  44 #include "object-edit.h"
  45 #include "xml/repr.h"
  46 #include "xml/node-event-vector.h"
  47 #include "prefs-utils.h"
  48 #include "rubberband.h"
  49 #include "sp-metrics.h"
  50 #include "context-fns.h"
  51 #include "verbs.h"
  52
  53 #include "text-editing.h"
  54
  55 #include "text-context.h"
  56
  57
  58 static void sp_text_context_class_init(SPTextContextClass *klass);
  59 static void sp_text_context_init(SPTextContext *text_context);
  60 static void sp_text_context_dispose(GObject *obj);
  61
  62 static void sp_text_context_setup(SPEventContext *ec);
  63 static void sp_text_context_finish(SPEventContext *ec);
  64 static gint sp_text_context_root_handler(SPEventContext *event_context, GdkEvent *event);
  65 static gint sp_text_context_item_handler(SPEventContext *event_context, SPItem *item, GdkEvent *event);
  66
  67 static void sp_text_context_selection_changed(Inkscape::Selection *selection, SPTextContext *tc);
  68 static void sp_text_context_selection_modified(Inkscape::Selection *selection, guint flags, SPTextContext *tc);
  69 static bool sp_text_context_style_set(SPCSSAttr const *css, SPTextContext *tc);
  70 static int sp_text_context_style_query(SPStyle *style, int property, SPTextContext *tc);
  71
  72 static void sp_text_context_validate_cursor_iterators(SPTextContext *tc);
  73 static void sp_text_context_update_cursor(SPTextContext *tc, bool scroll_to_see = true);
  74 static void sp_text_context_update_text_selection(SPTextContext *tc);
  75 static gint sp_text_context_timeout(SPTextContext *tc);
  76 static void sp_text_context_forget_text(SPTextContext *tc);
  77
  78 static gint sptc_focus_in(GtkWidget *widget, GdkEventFocus *event, SPTextContext *tc);
  79 static gint sptc_focus_out(GtkWidget *widget, GdkEventFocus *event, SPTextContext *tc);
  80 static void sptc_commit(GtkIMContext *imc, gchar *string, SPTextContext *tc);
  81
  82 static SPEventContextClass *parent_class;
  83
  84 GType
  85 sp_text_context_get_type()
  86 {
  87     static GType type = 0;
  88     if (!type) {
  89         GTypeInfo info = {
  90             sizeof(SPTextContextClass),
  91             NULL, NULL,
  92             (GClassInitFunc) sp_text_context_class_init,
  93             NULL, NULL,
  94             sizeof(SPTextContext),
  95             4,
  96             (GInstanceInitFunc) sp_text_context_init,
  97             NULL,   /* value_table */
  98         };
  99         type = g_type_register_static(SP_TYPE_EVENT_CONTEXT, "SPTextContext", &info, (GTypeFlags)0);
 100     }
 101     return type;
 102 }
 103
 104 static void
 105 sp_text_context_class_init(SPTextContextClass *klass)
 106 {
 107     GObjectClass *object_class=(GObjectClass *)klass;
 108     SPEventContextClass *event_context_class = (SPEventContextClass *) klass;
 109
 110     parent_class = (SPEventContextClass*)g_type_class_peek_parent(klass);
 111
 112     object_class->dispose = sp_text_context_dispose;
 113
 114     event_context_class->setup = sp_text_context_setup;
 115     event_context_class->finish = sp_text_context_finish;
 116     event_context_class->root_handler = sp_text_context_root_handler;
 117     event_context_class->item_handler = sp_text_context_item_handler;
 118 }
 119
 120 static void
 121 sp_text_context_init(SPTextContext *tc)
 122 {
 123     SPEventContext *event_context = SP_EVENT_CONTEXT(tc);
 124
 125     event_context->cursor_shape = cursor_text_xpm;
 126     event_context->hot_x = 7;
 127     event_context->hot_y = 7;
 128
 129     event_context->xp = 0;
 130     event_context->yp = 0;
 131     event_context->tolerance = 0;
 132     event_context->within_tolerance = false;
 133
 134     event_context->shape_repr = NULL;
 135     event_context->shape_knot_holder = NULL;
 136
 137     tc->imc = NULL;
 138
 139     tc->text = NULL;
 140     tc->pdoc = NR::Point(0, 0);
 141     new (&tc->text_sel_start) Inkscape::Text::Layout::iterator();
 142     new (&tc->text_sel_end) Inkscape::Text::Layout::iterator();
 143     new (&tc->text_selection_quads) std::vector<SPCanvasItem*>();
 144
 145     tc->unimode = false;
 146
 147     tc->cursor = NULL;
 148     tc->indicator = NULL;
 149     tc->frame = NULL;
 150     tc->grabbed = NULL;
 151     tc->timeout = 0;
 152     tc->show = FALSE;
 153     tc->phase = 0;
 154     tc->nascent_object = 0;
 155     tc->over_text = 0;
 156     tc->dragging = 0;
 157     tc->creating = 0;
 158
 159     new (&tc->sel_changed_connection) sigc::connection();
 160     new (&tc->sel_modified_connection) sigc::connection();
 161     new (&tc->style_set_connection) sigc::connection();
 162     new (&tc->style_query_connection) sigc::connection();
 163 }
 164
 165 static void
 166 sp_text_context_dispose(GObject *obj)
 167 {
 168     SPTextContext *tc = SP_TEXT_CONTEXT(obj);
 169     SPEventContext *ec = SP_EVENT_CONTEXT(tc);
 170     tc->style_query_connection.~connection();
 171     tc->style_set_connection.~connection();
 172     tc->sel_changed_connection.~connection();
 173     tc->sel_modified_connection.~connection();
 174     tc->text_sel_end.~iterator();
 175     tc->text_sel_start.~iterator();
 176     tc->text_selection_quads.~vector();
 177     if (G_OBJECT_CLASS(parent_class)->dispose) {
 178         G_OBJECT_CLASS(parent_class)->dispose(obj);
 179     }
 180     if (tc->grabbed) {
 181         sp_canvas_item_ungrab(tc->grabbed, GDK_CURRENT_TIME);
 182         tc->grabbed = NULL;
 183     }
 184
 185     Inkscape::Rubberband::get()->stop();
 186
 187     if (ec->shape_knot_holder) {
 188         sp_knot_holder_destroy(ec->shape_knot_holder);
 189         ec->shape_knot_holder = NULL;
 190     }
 191     if (ec->shape_repr) { // remove old listener
 192         sp_repr_remove_listener_by_data(ec->shape_repr, ec);
 193         Inkscape::GC::release(ec->shape_repr);
 194         ec->shape_repr = 0;
 195     }
 196 }
 197
 198 static Inkscape::XML::NodeEventVector ec_shape_repr_events = {
 199     NULL, /* child_added */
 200     NULL, /* child_removed */
 201     ec_shape_event_attr_changed,
 202     NULL, /* content_changed */
 203     NULL  /* order_changed */
 204 };
 205
 206 static void
 207 sp_text_context_setup(SPEventContext *ec)
 208 {
 209     SPTextContext *tc = SP_TEXT_CONTEXT(ec);
 210     SPDesktop *desktop = ec->desktop;
 211
 212     tc->cursor = sp_canvas_item_new(sp_desktop_controls(desktop), SP_TYPE_CTRLLINE, NULL);
 213     sp_ctrlline_set_coords(SP_CTRLLINE(tc->cursor), 100, 0, 100, 100);
 214     sp_ctrlline_set_rgba32(SP_CTRLLINE(tc->cursor), 0x000000ff);
 215     sp_canvas_item_hide(tc->cursor);
 216
 217     tc->indicator = sp_canvas_item_new(sp_desktop_controls(desktop), SP_TYPE_CTRLRECT, NULL);
 218     SP_CTRLRECT(tc->indicator)->setRectangle(NR::Rect(NR::Point(0, 0), NR::Point(100, 100)));
 219     SP_CTRLRECT(tc->indicator)->setColor(0x0000ff7f, false, 0);
 220     sp_canvas_item_hide(tc->indicator);
 221
 222     tc->frame = sp_canvas_item_new(sp_desktop_controls(desktop), SP_TYPE_CTRLRECT, NULL);
 223     SP_CTRLRECT(tc->frame)->setRectangle(NR::Rect(NR::Point(0, 0), NR::Point(100, 100)));
 224     SP_CTRLRECT(tc->frame)->setColor(0x0000ff7f, false, 0);
 225     sp_canvas_item_hide(tc->frame);
 226
 227     tc->timeout = gtk_timeout_add(250, (GtkFunction) sp_text_context_timeout, ec);
 228
 229     tc->imc = gtk_im_multicontext_new();
 230     if (tc->imc) {
 231         GtkWidget *canvas = GTK_WIDGET(sp_desktop_canvas(desktop));
 232
 233         /* im preedit handling is very broken in inkscape for
 234          * multi-byte characters.  See bug 1086769.
 235          * We need to let the IM handle the preediting, and
 236          * just take in the characters when they're finished being
 237          * entered.
 238          */
 239         gtk_im_context_set_use_preedit(tc->imc, FALSE);
 240         gtk_im_context_set_client_window(tc->imc, canvas->window);
 241
 242         g_signal_connect(G_OBJECT(canvas), "focus_in_event", G_CALLBACK(sptc_focus_in), tc);
 243         g_signal_connect(G_OBJECT(canvas), "focus_out_event", G_CALLBACK(sptc_focus_out), tc);
 244         g_signal_connect(G_OBJECT(tc->imc), "commit", G_CALLBACK(sptc_commit), tc);
 245
 246         if (GTK_WIDGET_HAS_FOCUS(canvas)) {
 247             sptc_focus_in(canvas, NULL, tc);
 248         }
 249     }
 250
 251     if (((SPEventContextClass *) parent_class)->setup)
 252         ((SPEventContextClass *) parent_class)->setup(ec);
 253
 254     SPItem *item = sp_desktop_selection(ec->desktop)->singleItem();
 255     if (item && SP_IS_FLOWTEXT (item) && SP_FLOWTEXT(item)->has_internal_frame()) {
 256         ec->shape_knot_holder = sp_item_knot_holder(item, ec->desktop);
 257         Inkscape::XML::Node *shape_repr = SP_OBJECT_REPR(SP_FLOWTEXT(item)->get_frame(NULL));
 258         if (shape_repr) {
 259             ec->shape_repr = shape_repr;
 260             Inkscape::GC::anchor(shape_repr);
 261             sp_repr_add_listener(shape_repr, &ec_shape_repr_events, ec);
 262         }
 263     }
 264
 265     tc->sel_changed_connection = sp_desktop_selection(desktop)->connectChanged(
 266         sigc::bind(sigc::ptr_fun(&sp_text_context_selection_changed), tc)
 267         );
 268     tc->sel_modified_connection = sp_desktop_selection(desktop)->connectModified(
 269         sigc::bind(sigc::ptr_fun(&sp_text_context_selection_modified), tc)
 270         );
 271     tc->style_set_connection = desktop->connectSetStyle(
 272         sigc::bind(sigc::ptr_fun(&sp_text_context_style_set), tc)
 273         );
 274     tc->style_query_connection = desktop->connectQueryStyle(
 275         sigc::bind(sigc::ptr_fun(&sp_text_context_style_query), tc)
 276         );
 277
 278     sp_text_context_selection_changed(sp_desktop_selection(desktop), tc);
 279
 280     if (prefs_get_int_attribute("tools.text", "selcue", 0) != 0) {
 281         ec->enableSelectionCue();
 282     }
 283     if (prefs_get_int_attribute("tools.text", "gradientdrag", 0) != 0) {
 284         ec->enableGrDrag();
 285     }
 286 }
 287
 288 static void
 289 sp_text_context_finish(SPEventContext *ec)
 290 {
 291     SPTextContext *tc = SP_TEXT_CONTEXT(ec);
 292
 293     if (ec->desktop) {
 294         sp_signal_disconnect_by_data(sp_desktop_canvas(ec->desktop), tc);
 295     }
 296
 297     ec->enableGrDrag(false);
 298
 299     tc->style_set_connection.disconnect();
 300     tc->style_query_connection.disconnect();
 301     tc->sel_changed_connection.disconnect();
 302     tc->sel_modified_connection.disconnect();
 303
 304     sp_text_context_forget_text(SP_TEXT_CONTEXT(ec));
 305
 306     if (tc->imc) {
 307         g_object_unref(G_OBJECT(tc->imc));
 308         tc->imc = NULL;
 309     }
 310
 311     if (tc->timeout) {
 312         gtk_timeout_remove(tc->timeout);
 313         tc->timeout = 0;
 314     }
 315
 316     if (tc->cursor) {
 317         gtk_object_destroy(GTK_OBJECT(tc->cursor));
 318         tc->cursor = NULL;
 319     }
 320
 321     if (tc->indicator) {
 322         gtk_object_destroy(GTK_OBJECT(tc->indicator));
 323         tc->indicator = NULL;
 324     }
 325
 326     if (tc->frame) {
 327         gtk_object_destroy(GTK_OBJECT(tc->frame));
 328         tc->frame = NULL;
 329     }
 330
 331     for (std::vector<SPCanvasItem*>::iterator it = tc->text_selection_quads.begin() ;
 332          it != tc->text_selection_quads.end() ; ++it) {
 333         sp_canvas_item_hide(*it);
 334         gtk_object_destroy(*it);
 335     }
 336     tc->text_selection_quads.clear();
 337 }
 338
 339
 340 static gint
 341 sp_text_context_item_handler(SPEventContext *ec, SPItem *item, GdkEvent *event)
 342 {
 343     SPTextContext *tc = SP_TEXT_CONTEXT(ec);
 344     SPDesktop *desktop = ec->desktop;
 345     SPItem *item_ungrouped;
 346
 347     gint ret = FALSE;
 348
 349     sp_text_context_validate_cursor_iterators(tc);
 350
 351     switch (event->type) {
 352         case GDK_BUTTON_PRESS:
 353             if (event->button.button == 1) {
 354                 // find out clicked item, disregarding groups
 355                 item_ungrouped = desktop->item_at_point(NR::Point(event->button.x, event->button.y), TRUE);
 356                 if (SP_IS_TEXT(item_ungrouped) || SP_IS_FLOWTEXT(item_ungrouped)) {
 357                     sp_desktop_selection(ec->desktop)->set(item_ungrouped);
 358                     if (tc->text) {
 359                         // find out click point in document coordinates
 360                         NR::Point p = ec->desktop->w2d(NR::Point(event->button.x, event->button.y));
 361                         // set the cursor closest to that point
 362                         tc->text_sel_start = tc->text_sel_end = sp_te_get_position_by_coords(tc->text, p);
 363                         // update display
 364                         sp_text_context_update_cursor(tc);
 365                         sp_text_context_update_text_selection(tc);
 366                         tc->dragging = 1;
 367                     }
 368                     ret = TRUE;
 369                 }
 370             }
 371             break;
 372         case GDK_2BUTTON_PRESS:
 373             if (event->button.button == 1 && tc->text) {
 374                 Inkscape::Text::Layout const *layout = te_get_layout(tc->text);
 375                 if (layout) {
 376                     if (!layout->isStartOfWord(tc->text_sel_start))
 377                         tc->text_sel_start.prevStartOfWord();
 378                     if (!layout->isEndOfWord(tc->text_sel_end))
 379                         tc->text_sel_end.nextEndOfWord();
 380                     sp_text_context_update_cursor(tc);
 381                     sp_text_context_update_text_selection(tc);
 382                     tc->dragging = 2;
 383                     ret = TRUE;
 384                 }
 385             }
 386             break;
 387         case GDK_3BUTTON_PRESS:
 388             if (event->button.button == 1 && tc->text) {
 389                 tc->text_sel_start.thisStartOfLine();
 390                 tc->text_sel_end.thisEndOfLine();
 391                 sp_text_context_update_cursor(tc);
 392                 sp_text_context_update_text_selection(tc);
 393                 tc->dragging = 3;
 394                 ret = TRUE;
 395             }
 396             break;
 397         case GDK_BUTTON_RELEASE:
 398             if (event->button.button == 1 && tc->dragging) {
 399                 tc->dragging = 0;
 400                 ret = TRUE;
 401             }
 402             break;
 403         case GDK_MOTION_NOTIFY:
 404             if (event->motion.state & GDK_BUTTON1_MASK && tc->dragging) {
 405                 Inkscape::Text::Layout const *layout = te_get_layout(tc->text);
 406                 if (!layout) break;
 407                 // find out click point in document coordinates
 408                 NR::Point p = ec->desktop->w2d(NR::Point(event->button.x, event->button.y));
 409                 // set the cursor closest to that point
 410                 Inkscape::Text::Layout::iterator new_end = sp_te_get_position_by_coords(tc->text, p);
 411                 if (tc->dragging == 2) {
 412                     // double-click dragging: go by word
 413                     if (new_end < tc->text_sel_start) {
 414                         if (!layout->isStartOfWord(new_end))
 415                             new_end.prevStartOfWord();
 416                     } else
 417                         if (!layout->isEndOfWord(new_end))
 418                             new_end.nextEndOfWord();
 419                 } else if (tc->dragging == 3) {
 420                     // triple-click dragging: go by line
 421                     if (new_end < tc->text_sel_start)
 422                         new_end.thisStartOfLine();
 423                     else
 424                         new_end.thisEndOfLine();
 425                 }
 426                 // update display
 427                 if (tc->text_sel_end != new_end) {
 428                     tc->text_sel_end = new_end;
 429                     sp_text_context_update_cursor(tc);
 430                     sp_text_context_update_text_selection(tc);
 431                 }
 432                 ret = TRUE;
 433                 break;
 434             }
 435             // find out item under mouse, disregarding groups
 436             item_ungrouped = desktop->item_at_point(NR::Point(event->button.x, event->button.y), TRUE);
 437             if (SP_IS_TEXT(item_ungrouped) || SP_IS_FLOWTEXT(item_ungrouped)) {
 438                 sp_canvas_item_show(tc->indicator);
 439                 NR::Maybe<NR::Rect> ibbox = sp_item_bbox_desktop(item_ungrouped);
 440                 if (ibbox) {
 441                     SP_CTRLRECT(tc->indicator)->setRectangle(*ibbox);
 442                 }
 443
 444                 ec->cursor_shape = cursor_text_insert_xpm;
 445                 ec->hot_x = 7;
 446                 ec->hot_y = 10;
 447                 sp_event_context_update_cursor(ec);
 448                 sp_text_context_update_text_selection(tc);
 449
 450                 if (SP_IS_TEXT (item_ungrouped)) {
 451                     desktop->event_context->defaultMessageContext()->set(Inkscape::NORMAL_MESSAGE, _("<b>Click</b> to edit the text, <b>drag</b> to select part of the text."));
 452                 } else {
 453                     desktop->event_context->defaultMessageContext()->set(Inkscape::NORMAL_MESSAGE, _("<b>Click</b> to edit the flowed text, <b>drag</b> to select part of the text."));
 454                 }
 455
 456                 tc->over_text = true;
 457
 458                 ret = TRUE;
 459             }
 460             break;
 461         default:
 462             break;
 463     }
 464
 465     if (!ret) {
 466         if (((SPEventContextClass *) parent_class)->item_handler)
 467             ret = ((SPEventContextClass *) parent_class)->item_handler(ec, item, event);
 468     }
 469
 470     return ret;
 471 }
 472
 473 static void
 474 sp_text_context_setup_text(SPTextContext *tc)
 475 {
 476     SPEventContext *ec = SP_EVENT_CONTEXT(tc);
 477
 478     /* Create <text> */
 479     Inkscape::XML::Document *xml_doc = sp_document_repr_doc(SP_EVENT_CONTEXT_DESKTOP(ec)->doc());
 480     Inkscape::XML::Node *rtext = xml_doc->createElement("svg:text");
 481     rtext->setAttribute("xml:space", "preserve"); // we preserve spaces in the text objects we create
 482
 483     /* Set style */
 484     sp_desktop_apply_style_tool(SP_EVENT_CONTEXT_DESKTOP(ec), rtext, "tools.text", true);
 485
 486     sp_repr_set_svg_double(rtext, "x", tc->pdoc[NR::X]);
 487     sp_repr_set_svg_double(rtext, "y", tc->pdoc[NR::Y]);
 488
 489     /* Create <tspan> */
 490     Inkscape::XML::Node *rtspan = xml_doc->createElement("svg:tspan");
 491     rtspan->setAttribute("sodipodi:role", "line"); // otherwise, why bother creating the tspan?
 492     rtext->addChild(rtspan, NULL);
 493     Inkscape::GC::release(rtspan);
 494
 495     /* Create TEXT */
 496     Inkscape::XML::Node *rstring = xml_doc->createTextNode("");
 497     rtspan->addChild(rstring, NULL);
 498     Inkscape::GC::release(rstring);
 499     SPItem *text_item = SP_ITEM(ec->desktop->currentLayer()->appendChildRepr(rtext));
 500     /* fixme: Is selection::changed really immediate? */
 501     /* yes, it's immediate .. why does it matter? */
 502     sp_desktop_selection(ec->desktop)->set(text_item);
 503     Inkscape::GC::release(rtext);
 504     text_item->transform = SP_ITEM(ec->desktop->currentRoot())->getRelativeTransform(ec->desktop->currentLayer());
 505     text_item->updateRepr();
 506     sp_document_done(sp_desktop_document(ec->desktop), SP_VERB_CONTEXT_TEXT,
 507                      _("Create text"));
 508 }
 509
 510 /**
 511  * Insert the character indicated by tc.uni to replace the current selection,
 512  * and reset tc.uni/tc.unipos to empty string.
 513  *
 514  * \pre tc.uni/tc.unipos non-empty.
 515  */
 516 static void
 517 insert_uni_char(SPTextContext *const tc)
 518 {
 519     g_return_if_fail(tc->unipos
 520                      && tc->unipos < sizeof(tc->uni)
 521                      && tc->uni[tc->unipos] == '\0');
 522     unsigned int uv;
 523     sscanf(tc->uni, "%x", &uv);
 524     tc->unipos = 0;
 525     tc->uni[tc->unipos] = '\0';
 526
 527     if ( !g_unichar_isprint(static_cast<gunichar>(uv))
 528          && !(g_unichar_validate(static_cast<gunichar>(uv)) && (g_unichar_type(static_cast<gunichar>(uv)) == G_UNICODE_PRIVATE_USE) ) ) {
 529         // This may be due to bad input, so it goes to statusbar.
 530         tc->desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE,
 531                                            _("Non-printable character"));
 532     } else {
 533         if (!tc->text) { // printable key; create text if none (i.e. if nascent_object)
 534             sp_text_context_setup_text(tc);
 535             tc->nascent_object = 0; // we don't need it anymore, having created a real <text>
 536         }
 537
 538         gchar u[10];
 539         guint const len = g_unichar_to_utf8(uv, u);
 540         u[len] = '\0';
 541
 542         tc->text_sel_start = tc->text_sel_end = sp_te_replace(tc->text, tc->text_sel_start, tc->text_sel_end, u);
 543         sp_text_context_update_cursor(tc);
 544         sp_text_context_update_text_selection(tc);
 545         sp_document_done(sp_desktop_document(tc->desktop), SP_VERB_DIALOG_TRANSFORM,
 546                          _("Insert Unicode character"));
 547     }
 548 }
 549
 550 static void
 551 hex_to_printable_utf8_buf(char const *const hex, char *utf8)
 552 {
 553     unsigned int uv;
 554     sscanf(hex, "%x", &uv);
 555     if (!g_unichar_isprint((gunichar) uv)) {
 556         uv = 0xfffd;
 557     }
 558     guint const len = g_unichar_to_utf8(uv, utf8);
 559     utf8[len] = '\0';
 560 }
 561
 562 static void
 563 show_curr_uni_char(SPTextContext *const tc)
 564 {
 565     g_return_if_fail(tc->unipos < sizeof(tc->uni)
 566                      && tc->uni[tc->unipos] == '\0');
 567     if (tc->unipos) {
 568         char utf8[10];
 569         hex_to_printable_utf8_buf(tc->uni, utf8);
 570
 571         /* Status bar messages are in pango markup, so we need xml escaping. */
 572         if (utf8[1] == '\0') {
 573             switch(utf8[0]) {
 574                 case '<': strcpy(utf8, "&lt;"); break;
 575                 case '>': strcpy(utf8, "&gt;"); break;
 576                 case '&': strcpy(utf8, "&amp;"); break;
 577                 default: break;
 578             }
 579         }
 580         tc->defaultMessageContext()->setF(Inkscape::NORMAL_MESSAGE,
 581                                           _("Unicode (<b>Enter</b> to finish): %s: %s"), tc->uni, utf8);
 582     } else {
 583         tc->defaultMessageContext()->set(Inkscape::NORMAL_MESSAGE, _("Unicode (<b>Enter</b> to finish): "));
 584     }
 585 }
 586
 587 static gint
 588 sp_text_context_root_handler(SPEventContext *const ec, GdkEvent *const event)
 589 {
 590     SPTextContext *const tc = SP_TEXT_CONTEXT(ec);
 591
 592     SPDesktop *desktop = ec->desktop;
 593
 594     sp_canvas_item_hide(tc->indicator);
 595
 596     sp_text_context_validate_cursor_iterators(tc);
 597
 598     ec->tolerance = prefs_get_int_attribute_limited("options.dragtolerance", "value", 0, 0, 100);
 599
 600     switch (event->type) {
 601         case GDK_BUTTON_PRESS:
 602             if (event->button.button == 1) {
 603
 604                 SPDesktop *desktop = SP_EVENT_CONTEXT_DESKTOP(ec);
 605
 606                 if (Inkscape::have_viable_layer(desktop, desktop->messageStack()) == false) {
 607                     return TRUE;
 608                 }
 609
 610                 // save drag origin
 611                 ec->xp = (gint) event->button.x;
 612                 ec->yp = (gint) event->button.y;
 613                 ec->within_tolerance = true;
 614
 615                 NR::Point const button_pt(event->button.x, event->button.y);
 616                 tc->p0 = desktop->w2d(button_pt);
 617                 Inkscape::Rubberband::get()->start(desktop, tc->p0);
 618                 sp_canvas_item_grab(SP_CANVAS_ITEM(desktop->acetate),
 619                                     GDK_KEY_PRESS_MASK | GDK_BUTTON_RELEASE_MASK | GDK_BUTTON_PRESS_MASK |
 620                                         GDK_POINTER_MOTION_MASK,
 621                                     NULL, event->button.time);
 622                 tc->grabbed = SP_CANVAS_ITEM(desktop->acetate);
 623                 tc->creating = 1;
 624
 625                 /* Processed */
 626                 return TRUE;
 627             }
 628             break;
 629         case GDK_MOTION_NOTIFY:
 630             if (tc->over_text) {
 631                 tc->over_text = 0;
 632                 // update cursor and statusbar: we are not over a text object now
 633                 ec->cursor_shape = cursor_text_xpm;
 634                 ec->hot_x = 7;
 635                 ec->hot_y = 7;
 636                 sp_event_context_update_cursor(ec);
 637                 desktop->event_context->defaultMessageContext()->clear();
 638             }
 639
 640             if (tc->creating && event->motion.state & GDK_BUTTON1_MASK) {
 641                 if ( ec->within_tolerance
 642                      && ( abs( (gint) event->motion.x - ec->xp ) < ec->tolerance )
 643                      && ( abs( (gint) event->motion.y - ec->yp ) < ec->tolerance ) ) {
 644                     break; // do not drag if we're within tolerance from origin
 645                 }
 646                 // Once the user has moved farther than tolerance from the original location
 647                 // (indicating they intend to draw, not click), then always process the
 648                 // motion notify coordinates as given (no snapping back to origin)
 649                 ec->within_tolerance = false;
 650
 651                 NR::Point const motion_pt(event->motion.x, event->motion.y);
 652                 NR::Point const p = desktop->w2d(motion_pt);
 653
 654                 Inkscape::Rubberband::get()->move(p);
 655                 gobble_motion_events(GDK_BUTTON1_MASK);
 656
 657                 // status text
 658                 GString *xs = SP_PX_TO_METRIC_STRING(fabs((p - tc->p0)[NR::X]), desktop->namedview->getDefaultMetric());
 659                 GString *ys = SP_PX_TO_METRIC_STRING(fabs((p - tc->p0)[NR::Y]), desktop->namedview->getDefaultMetric());
 660                 ec->_message_context->setF(Inkscape::NORMAL_MESSAGE, _("<b>Flowed text frame</b>: %s &#215; %s"), xs->str, ys->str);
 661                 g_string_free(xs, FALSE);
 662                 g_string_free(ys, FALSE);
 663
 664             }
 665             break;
 666         case GDK_BUTTON_RELEASE:
 667             if (event->button.button == 1) {
 668
 669                 if (tc->grabbed) {
 670                     sp_canvas_item_ungrab(tc->grabbed, GDK_CURRENT_TIME);
 671                     tc->grabbed = NULL;
 672                 }
 673
 674                 Inkscape::Rubberband::get()->stop();
 675
 676                 if (tc->creating && ec->within_tolerance) {
 677                     /* Button 1, set X & Y & new item */
 678                     sp_desktop_selection(desktop)->clear();
 679                     NR::Point dtp = ec->desktop->w2d(NR::Point(event->button.x, event->button.y));
 680                     tc->pdoc = sp_desktop_dt2root_xy_point(ec->desktop, dtp);
 681
 682                     tc->show = TRUE;
 683                     tc->phase = 1;
 684                     tc->nascent_object = 1; // new object was just created
 685
 686                     /* Cursor */
 687                     sp_canvas_item_show(tc->cursor);
 688                     // Cursor height is defined by the new text object's font size; it needs to be set
 689                     // articifically here, for the text object does not exist yet:
 690                     double cursor_height = sp_desktop_get_font_size_tool(ec->desktop);
 691                     sp_ctrlline_set_coords(SP_CTRLLINE(tc->cursor), dtp, dtp + NR::Point(0, cursor_height));
 692                     ec->_message_context->set(Inkscape::NORMAL_MESSAGE, _("Type text; <b>Enter</b> to start new line.")); // FIXME:: this is a copy of a string from _update_cursor below, do not desync
 693
 694                     ec->within_tolerance = false;
 695                 } else if (tc->creating) {
 696                     NR::Point const button_pt(event->button.x, event->button.y);
 697                     NR::Point p1 = desktop->w2d(button_pt);
 698                     double cursor_height = sp_desktop_get_font_size_tool(ec->desktop);
 699                     if (fabs(p1[NR::Y] - tc->p0[NR::Y]) > cursor_height) {
 700                         // otherwise even one line won't fit; most probably a slip of hand (even if bigger than tolerance)
 701                         SPItem *ft = create_flowtext_with_internal_frame (desktop, tc->p0, p1);
 702                         /* Set style */
 703                         sp_desktop_apply_style_tool(SP_EVENT_CONTEXT_DESKTOP(ec), SP_OBJECT_REPR(ft), "tools.text", true);
 704                         sp_desktop_selection(desktop)->set(ft);
 705                         ec->desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Flowed text is created."));
 706                         sp_document_done(sp_desktop_document(desktop), SP_VERB_CONTEXT_TEXT,
 707                                          _("Create flowed text"));
 708                     } else {
 709                         ec->desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("The frame is <b>too small</b> for the current font size. Flowed text not created."));
 710                     }
 711                 }
 712                 tc->creating = false;
 713                 return TRUE;
 714             }
 715             break;
 716         case GDK_KEY_PRESS: {
 717             guint const group0_keyval = get_group0_keyval(&event->key);
 718
 719             if (group0_keyval == GDK_KP_Add ||
 720                 group0_keyval == GDK_KP_Subtract) {
 721                 if (!(event->key.state & GDK_MOD2_MASK)) // mod2 is NumLock; if on, type +/- keys
 722                     break; // otherwise pass on keypad +/- so they can zoom
 723             }
 724
 725             if ((tc->text) || (tc->nascent_object)) {
 726                 // there is an active text object in this context, or a new object was just created
 727
 728                 if (tc->unimode || !tc->imc
 729                     || (MOD__CTRL && MOD__SHIFT)    // input methods tend to steal this for unimode,
 730                                                     // but we have our own so make sure they don't swallow it
 731                     || !gtk_im_context_filter_keypress(tc->imc, (GdkEventKey*) event)) {
 732                     //IM did not consume the key, or we're in unimode
 733
 734                         if (!MOD__CTRL_ONLY && tc->unimode) {
 735                             /* TODO: ISO 14755 (section 3 Definitions) says that we should also
 736                                accept the first 6 characters of alphabets other than the latin
 737                                alphabet "if the Latin alphabet is not used".  The below is also
 738                                reasonable (viz. hope that the user's keyboard includes latin
 739                                characters and force latin interpretation -- just as we do for our
 740                                keyboard shortcuts), but differs from the ISO 14755
 741                                recommendation. */
 742                             switch (group0_keyval) {
 743                                 case GDK_space:
 744                                 case GDK_KP_Space: {
 745                                     if (tc->unipos) {
 746                                         insert_uni_char(tc);
 747                                     }
 748                                     /* Stay in unimode. */
 749                                     show_curr_uni_char(tc);
 750                                     return TRUE;
 751                                 }
 752
 753                                 case GDK_BackSpace: {
 754                                     g_return_val_if_fail(tc->unipos < sizeof(tc->uni), TRUE);
 755                                     if (tc->unipos) {
 756                                         tc->uni[--tc->unipos] = '\0';
 757                                     }
 758                                     show_curr_uni_char(tc);
 759                                     return TRUE;
 760                                 }
 761
 762                                 case GDK_Return:
 763                                 case GDK_KP_Enter: {
 764                                     if (tc->unipos) {
 765                                         insert_uni_char(tc);
 766                                     }
 767                                     /* Exit unimode. */
 768                                     tc->unimode = false;
 769                                     ec->defaultMessageContext()->clear();
 770                                     return TRUE;
 771                                 }
 772
 773                                 case GDK_Escape: {
 774                                     // Cancel unimode.
 775                                     tc->unimode = false;
 776                                     gtk_im_context_reset(tc->imc);
 777                                     ec->defaultMessageContext()->clear();
 778                                     return TRUE;
 779                                 }
 780
 781                                 case GDK_Shift_L:
 782                                 case GDK_Shift_R:
 783                                     break;
 784
 785                                 default: {
 786                                     if (g_ascii_isxdigit(group0_keyval)) {
 787                                         g_return_val_if_fail(tc->unipos < sizeof(tc->uni) - 1, TRUE);
 788                                         tc->uni[tc->unipos++] = group0_keyval;
 789                                         tc->uni[tc->unipos] = '\0';
 790                                         if (tc->unipos == 8) {
 791                                             /* This behaviour is partly to allow us to continue to
 792                                                use a fixed-length buffer for tc->uni.  Reason for
 793                                                choosing the number 8 is that it's the length of
 794                                                ``canonical form'' mentioned in the ISO 14755 spec.
 795                                                An advantage over choosing 6 is that it allows using
 796                                                backspace for typos & misremembering when entering a
 797                                                6-digit number. */
 798                                             insert_uni_char(tc);
 799                                         }
 800                                         show_curr_uni_char(tc);
 801                                         return TRUE;
 802                                     } else {
 803                                         /* The intent is to ignore but consume characters that could be
 804                                            typos for hex digits.  Gtk seems to ignore & consume all
 805                                            non-hex-digits, and we do similar here.  Though note that some
 806                                            shortcuts (like keypad +/- for zoom) get processed before
 807                                            reaching this code. */
 808                                         return TRUE;
 809                                     }
 810                                 }
 811                             }
 812                         }
 813
 814                         bool (Inkscape::Text::Layout::iterator::*cursor_movement_operator)() = NULL;
 815
 816                         /* Neither unimode nor IM consumed key; process text tool shortcuts */
 817                         switch (group0_keyval) {
 818                             case GDK_x:
 819                             case GDK_X:
 820                                 if (MOD__ALT_ONLY) {
 821                                     desktop->setToolboxFocusTo ("altx-text");
 822                                     return TRUE;
 823                                 }
 824                                 break;
 825                             case GDK_space:
 826                                 if (MOD__CTRL_ONLY) {
 827                                     /* No-break space */
 828                                     if (!tc->text) { // printable key; create text if none (i.e. if nascent_object)
 829                                         sp_text_context_setup_text(tc);
 830                                         tc->nascent_object = 0; // we don't need it anymore, having created a real <text>
 831                                     }
 832                                     tc->text_sel_start = tc->text_sel_end = sp_te_replace(tc->text, tc->text_sel_start, tc->text_sel_end, "\302\240");
 833                                     sp_text_context_update_cursor(tc);
 834                                     sp_text_context_update_text_selection(tc);
 835                                     ec->desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("No-break space"));
 836                                     sp_document_done(sp_desktop_document(ec->desktop), SP_VERB_CONTEXT_TEXT,
 837                                                      _("Insert no-break space"));
 838                                     return TRUE;
 839                                 }
 840                                 break;
 841                             case GDK_U:
 842                             case GDK_u:
 843                                 if (MOD__CTRL_ONLY || (MOD__CTRL && MOD__SHIFT)) {
 844                                     if (tc->unimode) {
 845                                         tc->unimode = false;
 846                                         ec->defaultMessageContext()->clear();
 847                                     } else {
 848                                         tc->unimode = true;
 849                                         tc->unipos = 0;
 850                                         ec->defaultMessageContext()->set(Inkscape::NORMAL_MESSAGE, _("Unicode (<b>Enter</b> to finish): "));
 851                                     }
 852                                     if (tc->imc) {
 853                                         gtk_im_context_reset(tc->imc);
 854                                     }
 855                                     return TRUE;
 856                                 }
 857                                 break;
 858                             case GDK_B:
 859                             case GDK_b:
 860                                 if (MOD__CTRL_ONLY && tc->text) {
 861                                     SPStyle const *style = sp_te_style_at_position(tc->text, std::min(tc->text_sel_start, tc->text_sel_end));
 862                                     SPCSSAttr *css = sp_repr_css_attr_new();
 863                                     if (style->font_weight.computed == SP_CSS_FONT_WEIGHT_NORMAL
 864                                         || style->font_weight.computed == SP_CSS_FONT_WEIGHT_100
 865                                         || style->font_weight.computed == SP_CSS_FONT_WEIGHT_200
 866                                         || style->font_weight.computed == SP_CSS_FONT_WEIGHT_300
 867                                         || style->font_weight.computed == SP_CSS_FONT_WEIGHT_400)
 868                                         sp_repr_css_set_property(css, "font-weight", "bold");
 869                                     else
 870                                         sp_repr_css_set_property(css, "font-weight", "normal");
 871                                     sp_te_apply_style(tc->text, tc->text_sel_start, tc->text_sel_end, css);
 872                                     sp_repr_css_attr_unref(css);
 873                                     sp_document_done(sp_desktop_document(ec->desktop), SP_VERB_CONTEXT_TEXT,
 874                                                      _("Make bold"));
 875                                     sp_text_context_update_cursor(tc);
 876                                     sp_text_context_update_text_selection(tc);
 877                                     return TRUE;
 878                                 }
 879                                 break;
 880                             case GDK_I:
 881                             case GDK_i:
 882                                 if (MOD__CTRL_ONLY && tc->text) {
 883                                     SPStyle const *style = sp_te_style_at_position(tc->text, std::min(tc->text_sel_start, tc->text_sel_end));
 884                                     SPCSSAttr *css = sp_repr_css_attr_new();
 885                                     if (style->font_style.computed == SP_CSS_FONT_STYLE_NORMAL)
 886                                         sp_repr_css_set_property(css, "font-style", "italic");
 887                                     else
 888                                         sp_repr_css_set_property(css, "font-style", "normal");
 889                                     sp_te_apply_style(tc->text, tc->text_sel_start, tc->text_sel_end, css);
 890                                     sp_repr_css_attr_unref(css);
 891                                     sp_document_done(sp_desktop_document(ec->desktop), SP_VERB_CONTEXT_TEXT,
 892                                                      _("Make italic"));
 893                                     sp_text_context_update_cursor(tc);
 894                                     sp_text_context_update_text_selection(tc);
 895                                     return TRUE;
 896                                 }
 897                                 break;
 898
 899                             case GDK_A:
 900                             case GDK_a:
 901                                 if (MOD__CTRL_ONLY && tc->text) {
 902                                     Inkscape::Text::Layout const *layout = te_get_layout(tc->text);
 903                                     if (layout) {
 904                                         tc->text_sel_start = layout->begin();
 905                                         tc->text_sel_end = layout->end();
 906                                         sp_text_context_update_cursor(tc);
 907                                         sp_text_context_update_text_selection(tc);
 908                                         return TRUE;
 909                                     }
 910                                 }
 911                                 break;
 912
 913                             case GDK_Return:
 914                             case GDK_KP_Enter:
 915                                 if (!tc->text) { // printable key; create text if none (i.e. if nascent_object)
 916                                     sp_text_context_setup_text(tc);
 917                                     tc->nascent_object = 0; // we don't need it anymore, having created a real <text>
 918                                 }
 919                                 tc->text_sel_start = tc->text_sel_end
 920                                                    = sp_te_delete(tc->text, tc->text_sel_start, tc->text_sel_end, SP_TE_DELETE_OTHER);
 921
 922                                 tc->text_sel_start = tc->text_sel_end = sp_te_insert_line(tc->text, tc->text_sel_start);
 923                                 sp_text_context_update_cursor(tc);
 924                                 sp_text_context_update_text_selection(tc);
 925                                 sp_document_done(sp_desktop_document(ec->desktop), SP_VERB_CONTEXT_TEXT,
 926                                                  _("New line"));
 927                                 return TRUE;
 928                             case GDK_BackSpace:
 929                                 if (tc->text) { // if nascent_object, do nothing, but return TRUE; same for all other delete and move keys
 930                                         sp_te_deletion_type deleteType = SP_TE_DELETE_OTHER;
 931
 932                                     if (tc->text_sel_start == tc->text_sel_end) {
 933                                         tc->text_sel_start.prevCursorPosition();
 934                                         deleteType = SP_TE_DELETE_SINGLE_BACKSPACE;
 935                                     }
 936
 937                                     tc->text_sel_start = tc->text_sel_end
 938                                                        = sp_te_delete(tc->text, tc->text_sel_start, tc->text_sel_end, deleteType);
 939
 940                                     sp_text_context_update_cursor(tc);
 941                                     sp_text_context_update_text_selection(tc);
 942                                     sp_document_done(sp_desktop_document(ec->desktop), SP_VERB_CONTEXT_TEXT,
 943                                                      _("Backspace"));
 944                                 }
 945                                 return TRUE;
 946                             case GDK_Delete:
 947                             case GDK_KP_Delete:
 948                                 if (tc->text) {
 949                                         sp_te_deletion_type deleteType = SP_TE_DELETE_OTHER;
 950
 951                                     if (tc->text_sel_start == tc->text_sel_end) {
 952                                         tc->text_sel_end.nextCursorPosition();
 953                                         deleteType = SP_TE_SINGLE_DELETE;
 954                                     }
 955
 956                                     tc->text_sel_start = tc->text_sel_end
 957                                                        = sp_te_delete(tc->text, tc->text_sel_start, tc->text_sel_end, deleteType);
 958
 959                                     sp_text_context_update_cursor(tc);
 960                                     sp_text_context_update_text_selection(tc);
 961                                     sp_document_done(sp_desktop_document(ec->desktop), SP_VERB_CONTEXT_TEXT,
 962                                                      _("Delete"));
 963                                 }
 964                                 return TRUE;
 965                             case GDK_Left:
 966                             case GDK_KP_Left:
 967                             case GDK_KP_4:
 968                                 if (tc->text) {
 969                                     if (MOD__ALT) {
 970                                         if (MOD__SHIFT)
 971                                             sp_te_adjust_kerning_screen(tc->text, tc->text_sel_start, tc->text_sel_end, ec->desktop, NR::Point(-10, 0));
 972                                         else
 973                                             sp_te_adjust_kerning_screen(tc->text, tc->text_sel_start, tc->text_sel_end, ec->desktop, NR::Point(-1, 0));
 974                                         sp_text_context_update_cursor(tc);
 975                                         sp_text_context_update_text_selection(tc);
 976                                         sp_document_maybe_done(sp_desktop_document(ec->desktop), "kern:left", SP_VERB_CONTEXT_TEXT,
 977                                                                _("Kern to the left"));
 978                                     } else {
 979                                         cursor_movement_operator = MOD__CTRL ? &Inkscape::Text::Layout::iterator::cursorLeftWithControl
 980                                                                              : &Inkscape::Text::Layout::iterator::cursorLeft;
 981                                         break;
 982                                     }
 983                                 }
 984                                 return TRUE;
 985                             case GDK_Right:
 986                             case GDK_KP_Right:
 987                             case GDK_KP_6:
 988                                 if (tc->text) {
 989                                     if (MOD__ALT) {
 990                                         if (MOD__SHIFT)
 991                                             sp_te_adjust_kerning_screen(tc->text, tc->text_sel_start, tc->text_sel_end, ec->desktop, NR::Point(10, 0));
 992                                         else
 993                                             sp_te_adjust_kerning_screen(tc->text, tc->text_sel_start, tc->text_sel_end, ec->desktop, NR::Point(1, 0));
 994                                         sp_text_context_update_cursor(tc);
 995                                         sp_text_context_update_text_selection(tc);
 996                                         sp_document_maybe_done(sp_desktop_document(ec->desktop), "kern:right", SP_VERB_CONTEXT_TEXT,
 997                                                                _("Kern to the right"));
 998                                     } else {
 999                                         cursor_movement_operator = MOD__CTRL ? &Inkscape::Text::Layout::iterator::cursorRightWithControl
1000                                                                              : &Inkscape::Text::Layout::iterator::cursorRight;
1001                                         break;
1002                                     }
1003                                 }
1004                                 return TRUE;
1005                             case GDK_Up:
1006                             case GDK_KP_Up:
1007                             case GDK_KP_8:
1008                                 if (tc->text) {
1009                                     if (MOD__ALT) {
1010                                         if (MOD__SHIFT)
1011                                             sp_te_adjust_kerning_screen(tc->text, tc->text_sel_start, tc->text_sel_end, ec->desktop, NR::Point(0, -10));
1012                                         else
1013                                             sp_te_adjust_kerning_screen(tc->text, tc->text_sel_start, tc->text_sel_end, ec->desktop, NR::Point(0, -1));
1014                                         sp_text_context_update_cursor(tc);
1015                                         sp_text_context_update_text_selection(tc);
1016                                         sp_document_maybe_done(sp_desktop_document(ec->desktop), "kern:up", SP_VERB_CONTEXT_TEXT,
1017                                                                _("Kern up"));
1018
1019                                     } else {
1020                                         cursor_movement_operator = MOD__CTRL ? &Inkscape::Text::Layout::iterator::cursorUpWithControl
1021                                                                              : &Inkscape::Text::Layout::iterator::cursorUp;
1022                                         break;
1023                                     }
1024                                 }
1025                                 return TRUE;
1026                             case GDK_Down:
1027                             case GDK_KP_Down:
1028                             case GDK_KP_2:
1029                                 if (tc->text) {
1030                                     if (MOD__ALT) {
1031                                         if (MOD__SHIFT)
1032                                             sp_te_adjust_kerning_screen(tc->text, tc->text_sel_start, tc->text_sel_end, ec->desktop, NR::Point(0, 10));
1033                                         else
1034                                             sp_te_adjust_kerning_screen(tc->text, tc->text_sel_start, tc->text_sel_end, ec->desktop, NR::Point(0, 1));
1035                                         sp_text_context_update_cursor(tc);
1036                                         sp_text_context_update_text_selection(tc);
1037                                         sp_document_maybe_done(sp_desktop_document(ec->desktop), "kern:down", SP_VERB_CONTEXT_TEXT,
1038                                                                _("Kern down"));
1039
1040                                     } else {
1041                                         cursor_movement_operator = MOD__CTRL ? &Inkscape::Text::Layout::iterator::cursorDownWithControl
1042                                                                              : &Inkscape::Text::Layout::iterator::cursorDown;
1043                                         break;
1044                                     }
1045                                 }
1046                                 return TRUE;
1047                             case GDK_Home:
1048                             case GDK_KP_Home:
1049                                 if (tc->text) {
1050                                     if (MOD__CTRL)
1051                                         cursor_movement_operator = &Inkscape::Text::Layout::iterator::thisStartOfShape;
1052                                     else
1053                                         cursor_movement_operator = &Inkscape::Text::Layout::iterator::thisStartOfLine;
1054                                     break;
1055                                 }
1056                                 return TRUE;
1057                             case GDK_End:
1058                             case GDK_KP_End:
1059                                 if (tc->text) {
1060                                     if (MOD__CTRL)
1061                                         cursor_movement_operator = &Inkscape::Text::Layout::iterator::nextStartOfShape;
1062                                     else
1063                                         cursor_movement_operator = &Inkscape::Text::Layout::iterator::thisEndOfLine;
1064                                     break;
1065                                 }
1066                                 return TRUE;
1067                             case GDK_Escape:
1068                                 if (tc->creating) {
1069                                     tc->creating = 0;
1070                                     if (tc->grabbed) {
1071                                         sp_canvas_item_ungrab(tc->grabbed, GDK_CURRENT_TIME);
1072                                         tc->grabbed = NULL;
1073                                     }
1074                                     Inkscape::Rubberband::get()->stop();
1075                                 } else {
1076                                     sp_desktop_selection(ec->desktop)->clear();
1077                                 }
1078                                 tc->nascent_object = FALSE;
1079                                 return TRUE;
1080                             case GDK_bracketleft:
1081                                 if (tc->text) {
1082                                     if (MOD__ALT || MOD__CTRL) {
1083                                         if (MOD__ALT) {
1084                                             if (MOD__SHIFT) {
1085                                                 // FIXME: alt+shift+[] does not work, don't know why
1086                                                 sp_te_adjust_rotation_screen(tc->text, tc->text_sel_start, tc->text_sel_end, ec->desktop, -10);
1087                                             } else {
1088                                                 sp_te_adjust_rotation_screen(tc->text, tc->text_sel_start, tc->text_sel_end, ec->desktop, -1);
1089                                             }
1090                                         } else {
1091                                             sp_te_adjust_rotation(tc->text, tc->text_sel_start, tc->text_sel_end, ec->desktop, -90);
1092                                         }
1093                                         sp_document_maybe_done(sp_desktop_document(ec->desktop), "textrot:ccw", SP_VERB_CONTEXT_TEXT,
1094                                                                _("Rotate counterclockwise"));
1095                                         sp_text_context_update_cursor(tc);
1096                                         sp_text_context_update_text_selection(tc);
1097                                         return TRUE;
1098                                     }
1099                                 }
1100                                 break;
1101                             case GDK_bracketright:
1102                                 if (tc->text) {
1103                                     if (MOD__ALT || MOD__CTRL) {
1104                                         if (MOD__ALT) {
1105                                             if (MOD__SHIFT) {
1106                                                 // FIXME: alt+shift+[] does not work, don't know why
1107                                                 sp_te_adjust_rotation_screen(tc->text, tc->text_sel_start, tc->text_sel_end, ec->desktop, 10);
1108                                             } else {
1109                                                 sp_te_adjust_rotation_screen(tc->text, tc->text_sel_start, tc->text_sel_end, ec->desktop, 1);
1110                                             }
1111                                         } else {
1112                                             sp_te_adjust_rotation(tc->text, tc->text_sel_start, tc->text_sel_end, ec->desktop, 90);
1113                                         }
1114                                         sp_document_maybe_done(sp_desktop_document(ec->desktop), "textrot:cw", SP_VERB_CONTEXT_TEXT,
1115                                                                 _("Rotate clockwise"));
1116                                         sp_text_context_update_cursor(tc);
1117                                         sp_text_context_update_text_selection(tc);
1118                                         return TRUE;
1119                                     }
1120                                 }
1121                                 break;
1122                             case GDK_less:
1123                             case GDK_comma:
1124                                 if (tc->text) {
1125                                     if (MOD__ALT) {
1126                                         if (MOD__CTRL) {
1127                                             if (MOD__SHIFT)
1128                                                 sp_te_adjust_linespacing_screen(tc->text, tc->text_sel_start, tc->text_sel_end, ec->desktop, -10);
1129                                             else
1130                                                 sp_te_adjust_linespacing_screen(tc->text, tc->text_sel_start, tc->text_sel_end, ec->desktop, -1);
1131                                             sp_document_maybe_done(sp_desktop_document(ec->desktop), "linespacing:dec", SP_VERB_CONTEXT_TEXT,
1132                                                                     _("Contract line spacing"));
1133
1134                                         } else {
1135                                             if (MOD__SHIFT)
1136                                                 sp_te_adjust_tspan_letterspacing_screen(tc->text, tc->text_sel_start, tc->text_sel_end, ec->desktop, -10);
1137                                             else
1138                                                 sp_te_adjust_tspan_letterspacing_screen(tc->text, tc->text_sel_start, tc->text_sel_end, ec->desktop, -1);
1139                                             sp_document_maybe_done(sp_desktop_document(ec->desktop), "letterspacing:dec", SP_VERB_CONTEXT_TEXT,
1140                                                                     _("Contract letter spacing"));
1141
1142                                         }
1143                                         sp_text_context_update_cursor(tc);
1144                                         sp_text_context_update_text_selection(tc);
1145                                         return TRUE;
1146                                     }
1147                                 }
1148                                 break;
1149                             case GDK_greater:
1150                             case GDK_period:
1151                                 if (tc->text) {
1152                                     if (MOD__ALT) {
1153                                         if (MOD__CTRL) {
1154                                             if (MOD__SHIFT)
1155                                                 sp_te_adjust_linespacing_screen(tc->text, tc->text_sel_start, tc->text_sel_end, ec->desktop, 10);
1156                                             else
1157                                                 sp_te_adjust_linespacing_screen(tc->text, tc->text_sel_start, tc->text_sel_end, ec->desktop, 1);
1158                                             sp_document_maybe_done(sp_desktop_document(ec->desktop), "linespacing:inc", SP_VERB_CONTEXT_TEXT,
1159                                                                     _("Expand line spacing"));
1160
1161                                         } else {
1162                                             if (MOD__SHIFT)
1163                                                 sp_te_adjust_tspan_letterspacing_screen(tc->text, tc->text_sel_start, tc->text_sel_end, ec->desktop, 10);
1164                                             else
1165                                                 sp_te_adjust_tspan_letterspacing_screen(tc->text, tc->text_sel_start, tc->text_sel_end, ec->desktop, 1);
1166                                             sp_document_maybe_done(sp_desktop_document(ec->desktop), "letterspacing:inc", SP_VERB_CONTEXT_TEXT,
1167                                                                     _("Expand letter spacing"));
1168
1169                                         }
1170                                         sp_text_context_update_cursor(tc);
1171                                         sp_text_context_update_text_selection(tc);
1172                                         return TRUE;
1173                                     }
1174                                 }
1175                                 break;
1176                             default:
1177                                 break;
1178                         }
1179
1180                         if (cursor_movement_operator) {
1181                             Inkscape::Text::Layout::iterator old_start = tc->text_sel_start;
1182                             Inkscape::Text::Layout::iterator old_end = tc->text_sel_end;
1183                             (tc->text_sel_end.*cursor_movement_operator)();
1184                             if (!MOD__SHIFT)
1185                                 tc->text_sel_start = tc->text_sel_end;
1186                             if (old_start != tc->text_sel_start || old_end != tc->text_sel_end) {
1187                                 sp_text_context_update_cursor(tc);
1188                                 sp_text_context_update_text_selection(tc);
1189                             }
1190                             return TRUE;
1191                         }
1192
1193                 } else return TRUE; // return the "I took care of it" value if it was consumed by the IM
1194             } else { // do nothing if there's no object to type in - the key will be sent to parent context,
1195                 // except up/down that are swallowed to prevent the zoom field from activation
1196                 if ((group0_keyval == GDK_Up    ||
1197                      group0_keyval == GDK_Down  ||
1198                      group0_keyval == GDK_KP_Up ||
1199                      group0_keyval == GDK_KP_Down )
1200                     && !MOD__CTRL_ONLY) {
1201                     return TRUE;
1202                 } else if (group0_keyval == GDK_Escape) { // cancel rubberband
1203                     if (tc->creating) {
1204                         tc->creating = 0;
1205                         if (tc->grabbed) {
1206                             sp_canvas_item_ungrab(tc->grabbed, GDK_CURRENT_TIME);
1207                             tc->grabbed = NULL;
1208                         }
1209                         Inkscape::Rubberband::get()->stop();
1210                     }
1211                 }
1212             }
1213             break;
1214         }
1215
1216         case GDK_KEY_RELEASE:
1217             if (!tc->unimode && tc->imc && gtk_im_context_filter_keypress(tc->imc, (GdkEventKey*) event)) {
1218                 return TRUE;
1219             }
1220             break;
1221         default:
1222             break;
1223     }
1224
1225     // if nobody consumed it so far
1226     if (((SPEventContextClass *) parent_class)->root_handler) { // and there's a handler in parent context,
1227         return ((SPEventContextClass *) parent_class)->root_handler(ec, event); // send event to parent
1228     } else {
1229         return FALSE; // return "I did nothing" value so that global shortcuts can be activated
1230     }
1231 }
1232
1233 /**
1234  Attempts to paste system clipboard into the currently edited text, returns true on success
1235  */
1236 bool
1237 sp_text_paste_inline(SPEventContext *ec)
1238 {
1239     if (!SP_IS_TEXT_CONTEXT(ec))
1240         return false;
1241
1242     SPTextContext *tc = SP_TEXT_CONTEXT(ec);
1243
1244     if ((tc->text) || (tc->nascent_object)) {
1245         // there is an active text object in this context, or a new object was just created
1246
1247         Glib::RefPtr<Gtk::Clipboard> refClipboard = Gtk::Clipboard::get();
1248         Glib::ustring const text = refClipboard->wait_for_text();
1249
1250         if (!text.empty()) {
1251
1252             if (!tc->text) { // create text if none (i.e. if nascent_object)
1253                 sp_text_context_setup_text(tc);
1254                 tc->nascent_object = 0; // we don't need it anymore, having created a real <text>
1255             }
1256
1257             // using indices is slow in ustrings. Whatever.
1258             Glib::ustring::size_type begin = 0;
1259             for ( ; ; ) {
1260                 Glib::ustring::size_type end = text.find('\n', begin);
1261                 if (end == Glib::ustring::npos) {
1262                     if (begin != text.length())
1263                         tc->text_sel_start = tc->text_sel_end = sp_te_replace(tc->text, tc->text_sel_start, tc->text_sel_end, text.substr(begin).c_str());
1264                     break;
1265                 }
1266                 tc->text_sel_start = tc->text_sel_end = sp_te_replace(tc->text, tc->text_sel_start, tc->text_sel_end, text.substr(begin, end - begin).c_str());
1267                 tc->text_sel_start = tc->text_sel_end = sp_te_insert_line(tc->text, tc->text_sel_start);
1268                 begin = end + 1;
1269             }
1270             sp_document_done(sp_desktop_document(ec->desktop), SP_VERB_CONTEXT_TEXT,
1271                              _("Paste text"));
1272
1273             return true;
1274         }
1275     } // FIXME: else create and select a new object under cursor!
1276
1277     return false;
1278 }
1279
1280 /**
1281  Gets the raw characters that comprise the currently selected text, converting line
1282  breaks into lf characters.
1283 */
1284 Glib::ustring
1285 sp_text_get_selected_text(SPEventContext const *ec)
1286 {
1287     if (!SP_IS_TEXT_CONTEXT(ec))
1288         return "";
1289     SPTextContext const *tc = SP_TEXT_CONTEXT(ec);
1290     if (tc->text == NULL)
1291         return "";
1292
1293     return sp_te_get_string_multiline(tc->text, tc->text_sel_start, tc->text_sel_end);
1294 }
1295
1296 /**
1297  Deletes the currently selected characters. Returns false if there is no
1298  text selection currently.
1299 */
1300 bool sp_text_delete_selection(SPEventContext *ec)
1301 {
1302     if (!SP_IS_TEXT_CONTEXT(ec))
1303         return false;
1304     SPTextContext *tc = SP_TEXT_CONTEXT(ec);
1305     if (tc->text == NULL)
1306         return false;
1307
1308     if (tc->text_sel_start == tc->text_sel_end)
1309         return false;
1310     tc->text_sel_start = tc->text_sel_end = sp_te_delete(tc->text, tc->text_sel_start, tc->text_sel_end, SP_TE_DELETE_OTHER);
1311     sp_text_context_update_cursor(tc);
1312     sp_text_context_update_text_selection(tc);
1313     return true;
1314 }
1315
1316 /**
1317  * \param selection Should not be NULL.
1318  */
1319 static void
1320 sp_text_context_selection_changed(Inkscape::Selection *selection, SPTextContext *tc)
1321 {
1322     g_assert(selection != NULL);
1323
1324     SPEventContext *ec = SP_EVENT_CONTEXT(tc);
1325
1326     if (ec->shape_knot_holder) { // destroy knotholder
1327         sp_knot_holder_destroy(ec->shape_knot_holder);
1328         ec->shape_knot_holder = NULL;
1329     }
1330
1331     if (ec->shape_repr) { // remove old listener
1332         sp_repr_remove_listener_by_data(ec->shape_repr, ec);
1333         Inkscape::GC::release(ec->shape_repr);
1334         ec->shape_repr = 0;
1335     }
1336
1337     SPItem *item = selection->singleItem();
1338     if (item && SP_IS_FLOWTEXT (item) && SP_FLOWTEXT(item)->has_internal_frame()) {
1339         ec->shape_knot_holder = sp_item_knot_holder(item, ec->desktop);
1340         Inkscape::XML::Node *shape_repr = SP_OBJECT_REPR(SP_FLOWTEXT(item)->get_frame(NULL));
1341         if (shape_repr) {
1342             ec->shape_repr = shape_repr;
1343             Inkscape::GC::anchor(shape_repr);
1344             sp_repr_add_listener(shape_repr, &ec_shape_repr_events, ec);
1345         }
1346     }
1347
1348     if (tc->text && (item != tc->text)) {
1349         sp_text_context_forget_text(tc);
1350     }
1351     tc->text = NULL;
1352
1353     if (SP_IS_TEXT(item) || SP_IS_FLOWTEXT(item)) {
1354         tc->text = item;
1355         Inkscape::Text::Layout const *layout = te_get_layout(tc->text);
1356         if (layout)
1357             tc->text_sel_start = tc->text_sel_end = layout->end();
1358     } else {
1359         tc->text = NULL;
1360     }
1361
1362     // we update cursor without scrolling, because this position may not be final;
1363     // item_handler moves cusros to the point of click immediately
1364     sp_text_context_update_cursor(tc, false);
1365     sp_text_context_update_text_selection(tc);
1366 }
1367
1368 static void
1369 sp_text_context_selection_modified(Inkscape::Selection *selection, guint flags, SPTextContext *tc)
1370 {
1371     sp_text_context_update_cursor(tc);
1372     sp_text_context_update_text_selection(tc);
1373 }
1374
1375 static bool
1376 sp_text_context_style_set(SPCSSAttr const *css, SPTextContext *tc)
1377 {
1378     if (tc->text == NULL)
1379         return false;
1380     if (tc->text_sel_start == tc->text_sel_end)
1381         return false;    // will get picked up by the parent and applied to the whole text object
1382
1383     sp_te_apply_style(tc->text, tc->text_sel_start, tc->text_sel_end, css);
1384     sp_document_done(sp_desktop_document(tc->desktop), SP_VERB_CONTEXT_TEXT,
1385                      _("Set text style"));
1386     sp_text_context_update_cursor(tc);
1387     sp_text_context_update_text_selection(tc);
1388
1389     return true;
1390 }
1391
1392 static int
1393 sp_text_context_style_query(SPStyle *style, int property, SPTextContext *tc)
1394 {
1395     if (tc->text == NULL)
1396         return QUERY_STYLE_NOTHING;
1397     const Inkscape::Text::Layout *layout = te_get_layout(tc->text);
1398     if (layout == NULL)
1399         return QUERY_STYLE_NOTHING;
1400     sp_text_context_validate_cursor_iterators(tc);
1401
1402     GSList *styles_list = NULL;
1403
1404     Inkscape::Text::Layout::iterator begin_it, end_it;
1405     if (tc->text_sel_start < tc->text_sel_end) {
1406         begin_it = tc->text_sel_start;
1407         end_it = tc->text_sel_end;
1408     } else {
1409         begin_it = tc->text_sel_end;
1410         end_it = tc->text_sel_start;
1411     }
1412     if (begin_it == end_it)
1413         if (!begin_it.prevCharacter())
1414             end_it.nextCharacter();
1415     for (Inkscape::Text::Layout::iterator it = begin_it ; it < end_it ; it.nextStartOfSpan()) {
1416         SPObject const *pos_obj = 0;
1417         void *rawptr = 0;
1418         layout->getSourceOfCharacter(it, &rawptr);
1419         pos_obj = SP_OBJECT(rawptr);
1420         if (pos_obj == 0) continue;
1421         while (SP_IS_STRING(pos_obj) && SP_OBJECT_PARENT(pos_obj)) {
1422            pos_obj = SP_OBJECT_PARENT(pos_obj);   // SPStrings don't have style
1423         }
1424         styles_list = g_slist_prepend(styles_list, (gpointer)pos_obj);
1425     }
1426
1427     int result = sp_desktop_query_style_from_list (styles_list, style, property);
1428
1429     g_slist_free(styles_list);
1430     return result;
1431 }
1432
1433 static void
1434 sp_text_context_validate_cursor_iterators(SPTextContext *tc)
1435 {
1436     if (tc->text == NULL)
1437         return;
1438     Inkscape::Text::Layout const *layout = te_get_layout(tc->text);
1439     if (layout) {     // undo can change the text length without us knowing it
1440         layout->validateIterator(&tc->text_sel_start);
1441         layout->validateIterator(&tc->text_sel_end);
1442     }
1443 }
1444
1445 static void
1446 sp_text_context_update_cursor(SPTextContext *tc,  bool scroll_to_see)
1447 {
1448     GdkRectangle im_cursor = { 0, 0, 1, 1 };
1449
1450     // due to interruptible display, tc may already be destroyed during a display update before
1451     // the cursor update (can't do both atomically, alas)
1452     if (!tc->desktop) return;
1453
1454     if (tc->text) {
1455         NR::Point p0, p1;
1456         sp_te_get_cursor_coords(tc->text, tc->text_sel_end, p0, p1);
1457         NR::Point const d0 = p0 * sp_item_i2d_affine(SP_ITEM(tc->text));
1458         NR::Point const d1 = p1 * sp_item_i2d_affine(SP_ITEM(tc->text));
1459
1460         // scroll to show cursor
1461         if (scroll_to_see) {
1462             NR::Point const dm = (d0 + d1) / 2;
1463             // unlike mouse moves, here we must scroll all the way at first shot, so we override the autoscrollspeed
1464             SP_EVENT_CONTEXT(tc)->desktop->scroll_to_point(&dm, 1.0);
1465         }
1466
1467         sp_canvas_item_show(tc->cursor);
1468         sp_ctrlline_set_coords(SP_CTRLLINE(tc->cursor), d0, d1);
1469
1470         /* fixme: ... need another transformation to get canvas widget coordinate space? */
1471         im_cursor.x = (int) floor(d0[NR::X]);
1472         im_cursor.y = (int) floor(d0[NR::Y]);
1473         im_cursor.width = (int) floor(d1[NR::X]) - im_cursor.x;
1474         im_cursor.height = (int) floor(d1[NR::Y]) - im_cursor.y;
1475
1476         tc->show = TRUE;
1477         tc->phase = 1;
1478
1479         if (SP_IS_FLOWTEXT(tc->text)) {
1480             SPItem *frame = SP_FLOWTEXT(tc->text)->get_frame (NULL); // first frame only
1481             if (frame) {
1482                 sp_canvas_item_show(tc->frame);
1483                 NR::Maybe<NR::Rect> frame_bbox = sp_item_bbox_desktop(frame);
1484                 if (frame_bbox) {
1485                     SP_CTRLRECT(tc->frame)->setRectangle(*frame_bbox);
1486                 }
1487             }
1488             SP_EVENT_CONTEXT(tc)->_message_context->set(Inkscape::NORMAL_MESSAGE, _("Type flowed text; <b>Enter</b> to start new paragraph."));
1489         } else {
1490             SP_EVENT_CONTEXT(tc)->_message_context->set(Inkscape::NORMAL_MESSAGE, _("Type text; <b>Enter</b> to start new line."));
1491         }
1492
1493     } else {
1494         sp_canvas_item_hide(tc->cursor);
1495         sp_canvas_item_hide(tc->frame);
1496         tc->show = FALSE;
1497         if (!tc->nascent_object) {
1498             SP_EVENT_CONTEXT(tc)->_message_context->set(Inkscape::NORMAL_MESSAGE, _("<b>Click</b> to select or create text, <b>drag</b> to create flowed text; then type.")); // FIXME: this is a copy of string from tools-switch, do not desync
1499         }
1500     }
1501
1502     if (tc->imc) {
1503         gtk_im_context_set_cursor_location(tc->imc, &im_cursor);
1504     }
1505     SP_EVENT_CONTEXT(tc)->desktop->emitToolSubselectionChanged((gpointer)tc);
1506 }
1507
1508 static void sp_text_context_update_text_selection(SPTextContext *tc)
1509 {
1510     // due to interruptible display, tc may already be destroyed during a display update before
1511     // the selection update (can't do both atomically, alas)
1512     if (!tc->desktop) return;
1513
1514     for (std::vector<SPCanvasItem*>::iterator it = tc->text_selection_quads.begin() ; it != tc->text_selection_quads.end() ; it++) {
1515         sp_canvas_item_hide(*it);
1516         gtk_object_destroy(*it);
1517     }
1518     tc->text_selection_quads.clear();
1519
1520     std::vector<NR::Point> quads;
1521     if (tc->text != NULL)
1522         quads = sp_te_create_selection_quads(tc->text, tc->text_sel_start, tc->text_sel_end, sp_item_i2d_affine(tc->text));
1523     for (unsigned i = 0 ; i < quads.size() ; i += 4) {
1524         SPCanvasItem *quad_canvasitem;
1525         quad_canvasitem = sp_canvas_item_new(sp_desktop_controls(tc->desktop), SP_TYPE_CTRLQUADR, NULL);
1526         sp_ctrlquadr_set_rgba32(SP_CTRLQUADR(quad_canvasitem), 0x000000ff);
1527         sp_ctrlquadr_set_coords(SP_CTRLQUADR(quad_canvasitem), quads[i], quads[i+1], quads[i+2], quads[i+3]);
1528         sp_canvas_item_show(quad_canvasitem);
1529         tc->text_selection_quads.push_back(quad_canvasitem);
1530     }
1531 }
1532
1533 static gint
1534 sp_text_context_timeout(SPTextContext *tc)
1535 {
1536     if (tc->show) {
1537         if (tc->phase) {
1538             tc->phase = 0;
1539             sp_canvas_item_hide(tc->cursor);
1540         } else {
1541             tc->phase = 1;
1542             sp_canvas_item_show(tc->cursor);
1543         }
1544     }
1545
1546     return TRUE;
1547 }
1548
1549 static void
1550 sp_text_context_forget_text(SPTextContext *tc)
1551 {
1552     if (! tc->text) return;
1553     SPItem *ti = tc->text;
1554     /* We have to set it to zero,
1555      * or selection changed signal messes everything up */
1556     tc->text = NULL;
1557     if ((SP_IS_TEXT(ti) || SP_IS_FLOWTEXT(ti)) && sp_te_input_is_empty(ti)) {
1558         Inkscape::XML::Node *text_repr=SP_OBJECT_REPR(ti);
1559         // the repr may already have been unparented
1560         // if we were called e.g. as the result of
1561         // an undo or the element being removed from
1562         // the XML editor
1563         if ( text_repr && sp_repr_parent(text_repr) ) {
1564             sp_repr_unparent(text_repr);
1565             sp_document_done(sp_desktop_document(tc->desktop), SP_VERB_CONTEXT_TEXT,
1566                      _("Remove empty text"));
1567         }
1568     }
1569 }
1570
1571 gint
1572 sptc_focus_in(GtkWidget *widget, GdkEventFocus *event, SPTextContext *tc)
1573 {
1574     gtk_im_context_focus_in(tc->imc);
1575     return FALSE;
1576 }
1577
1578 gint
1579 sptc_focus_out(GtkWidget *widget, GdkEventFocus *event, SPTextContext *tc)
1580 {
1581     gtk_im_context_focus_out(tc->imc);
1582     return FALSE;
1583 }
1584
1585 static void
1586 sptc_commit(GtkIMContext *imc, gchar *string, SPTextContext *tc)
1587 {
1588     if (!tc->text) {
1589         sp_text_context_setup_text(tc);
1590         tc->nascent_object = 0; // we don't need it anymore, having created a real <text>
1591     }
1592
1593     tc->text_sel_start = tc->text_sel_end = sp_te_replace(tc->text, tc->text_sel_start, tc->text_sel_end, string);
1594     sp_text_context_update_cursor(tc);
1595     sp_text_context_update_text_selection(tc);
1596
1597     sp_document_done(SP_OBJECT_DOCUMENT(tc->text), SP_VERB_CONTEXT_TEXT,
1598                      _("Type text"));
1599 }
1600
1601
1602 /*
1603   Local Variables:
1604   mode:c++
1605   c-file-style:"stroustrup"
1606   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
1607   indent-tabs-mode:nil
1608   fill-column:99
1609   End:
1610 */
1611 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :