clients/editor.c

   1 /*
   2  * Copyright © 2012 Openismus GmbH
   3  * Copyright © 2012 Intel Corporation
   4  *
   5  * Permission to use, copy, modify, distribute, and sell this software and
   6  * its documentation for any purpose is hereby granted without fee, provided
   7  * that the above copyright notice appear in all copies and that both that
   8  * copyright notice and this permission notice appear in supporting
   9  * documentation, and that the name of the copyright holders not be used in
  10  * advertising or publicity pertaining to distribution of the software
  11  * without specific, written prior permission.  The copyright holders make
  12  * no representations about the suitability of this software for any
  13  * purpose.  It is provided "as is" without express or implied warranty.
  14  *
  15  * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
  16  * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
  17  * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
  18  * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
  19  * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
  20  * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  21  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  22  */
  23
  24 #include <assert.h>
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <string.h>
  28
  29 #include <linux/input.h>
  30 #include <cairo.h>
  31
  32 #include "window.h"
  33 #include "text-client-protocol.h"
  34
  35 static const char *font_name = "sans-serif";
  36 static int font_size = 14;
  37
  38 struct text_layout {
  39         cairo_glyph_t *glyphs;
  40         int num_glyphs;
  41         cairo_text_cluster_t *clusters;
  42         int num_clusters;
  43         cairo_text_cluster_flags_t cluster_flags;
  44         cairo_scaled_font_t *font;
  45 };
  46
  47 struct text_entry {
  48         struct widget *widget;
  49         struct window *window;
  50         char *text;
  51         int active;
  52         uint32_t cursor;
  53         uint32_t anchor;
  54         char *preedit_text;
  55         uint32_t preedit_cursor;
  56         struct text_model *model;
  57         struct text_layout *layout;
  58 };
  59
  60 struct editor {
  61         struct text_model_factory *text_model_factory;
  62         struct display *display;
  63         struct window *window;
  64         struct widget *widget;
  65         struct text_entry *entry;
  66         struct text_entry *editor;
  67 };
  68
  69 static struct text_layout *
  70 text_layout_create(void)
  71 {
  72         struct text_layout *layout;
  73         cairo_surface_t *surface;
  74         cairo_t *cr;
  75
  76         layout = malloc(sizeof *layout);
  77         if (!layout)
  78                 return NULL;
  79
  80         layout->glyphs = NULL;
  81         layout->num_glyphs = 0;
  82
  83         layout->clusters = NULL;
  84         layout->num_clusters = 0;
  85
  86         surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, 0, 0);
  87         cr = cairo_create(surface);
  88         cairo_set_font_size(cr, font_size);
  89         cairo_select_font_face(cr, font_name, CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_NORMAL);
  90         layout->font = cairo_get_scaled_font(cr);
  91         cairo_scaled_font_reference(layout->font);
  92
  93         cairo_destroy(cr);
  94         cairo_surface_destroy(surface);
  95
  96         return layout;
  97 }
  98
  99 static void
 100 text_layout_destroy(struct text_layout *layout)
 101 {
 102         if (layout->glyphs)
 103                 cairo_glyph_free(layout->glyphs);
 104
 105         if (layout->clusters)
 106                 cairo_text_cluster_free(layout->clusters);
 107
 108         cairo_scaled_font_destroy(layout->font);
 109
 110         free(layout);
 111 }
 112
 113 static void
 114 text_layout_set_text(struct text_layout *layout,
 115                      const char *text)
 116 {
 117         if (layout->glyphs)
 118                 cairo_glyph_free(layout->glyphs);
 119
 120         if (layout->clusters)
 121                 cairo_text_cluster_free(layout->clusters);
 122
 123         layout->glyphs = NULL;
 124         layout->num_glyphs = 0;
 125         layout->clusters = NULL;
 126         layout->num_clusters = 0;
 127
 128         cairo_scaled_font_text_to_glyphs(layout->font, 0, 0, text, -1,
 129                                          &layout->glyphs, &layout->num_glyphs,
 130                                          &layout->clusters, &layout->num_clusters,
 131                                          &layout->cluster_flags);
 132 }
 133
 134 static void
 135 text_layout_draw(struct text_layout *layout, cairo_t *cr)
 136 {
 137         cairo_save(cr);
 138         cairo_set_scaled_font(cr, layout->font);
 139         cairo_show_glyphs(cr, layout->glyphs, layout->num_glyphs);
 140         cairo_restore(cr);
 141 }
 142
 143 static void
 144 text_layout_extents(struct text_layout *layout, cairo_text_extents_t *extents)
 145 {
 146         cairo_scaled_font_glyph_extents(layout->font,
 147                                         layout->glyphs, layout->num_glyphs,
 148                                         extents);
 149 }
 150
 151 static int
 152 text_layout_xy_to_index(struct text_layout *layout, double x, double y)
 153 {
 154         cairo_text_extents_t extents;
 155         int i;
 156
 157         cairo_scaled_font_glyph_extents(layout->font,
 158                                         layout->glyphs, layout->num_glyphs,
 159                                         &extents);
 160
 161         for (i = 1; i < layout->num_glyphs; i++) {
 162                 if (layout->glyphs[i].x >= x) {
 163                         return i - 1;
 164                 }
 165         }
 166
 167         if (x >= layout->glyphs[layout->num_glyphs - 1].x && x < extents.width)
 168                 return layout->num_glyphs - 1;
 169
 170         return layout->num_glyphs;
 171 }
 172
 173 static void
 174 text_layout_index_to_pos(struct text_layout *layout, uint32_t index, cairo_rectangle_t *pos)
 175 {
 176         cairo_text_extents_t extents;
 177
 178         if (!pos)
 179                 return;
 180
 181         cairo_scaled_font_glyph_extents(layout->font,
 182                                         layout->glyphs, layout->num_glyphs,
 183                                         &extents);
 184
 185         if ((int)index >= layout->num_glyphs) {
 186                 pos->x = extents.x_advance;
 187                 pos->y = layout->num_glyphs ? layout->glyphs[layout->num_glyphs - 1].y : 0;
 188                 pos->width = 1;
 189                 pos->height = extents.height;
 190                 return;
 191         }
 192
 193         pos->x = layout->glyphs[index].x;
 194         pos->y = layout->glyphs[index].y;
 195         pos->width = (int)index < layout->num_glyphs - 1 ? layout->glyphs[index + 1].x : extents.x_advance - pos->x;
 196         pos->height = extents.height;
 197 }
 198
 199 static void
 200 text_layout_get_cursor_pos(struct text_layout *layout, int index, cairo_rectangle_t *pos)
 201 {
 202         text_layout_index_to_pos(layout, index, pos);
 203         pos->width = 1;
 204 }
 205
 206 static void text_entry_redraw_handler(struct widget *widget, void *data);
 207 static void text_entry_button_handler(struct widget *widget,
 208                                       struct input *input, uint32_t time,
 209                                       uint32_t button,
 210                                       enum wl_pointer_button_state state, void *data);
 211 static void text_entry_insert_at_cursor(struct text_entry *entry, const char *text);
 212 static void text_entry_set_preedit(struct text_entry *entry,
 213                                    const char *preedit_text,
 214                                    int preedit_cursor);
 215
 216 static void
 217 text_model_commit_string(void *data,
 218                          struct text_model *text_model,
 219                          const char *text,
 220                          uint32_t index)
 221 {
 222         struct text_entry *entry = data;
 223
 224         if (index > strlen(text)) {
 225                 fprintf(stderr, "Invalid cursor index %d\n", index);
 226                 index = strlen(text);
 227         }
 228
 229         text_entry_insert_at_cursor(entry, text);
 230
 231         widget_schedule_redraw(entry->widget);
 232 }
 233
 234 static void
 235 text_model_preedit_string(void *data,
 236                           struct text_model *text_model,
 237                           const char *text,
 238                           uint32_t index)
 239 {
 240         struct text_entry *entry = data;
 241
 242         if (index > strlen(text)) {
 243                 fprintf(stderr, "Invalid cursor index %d\n", index);
 244                 index = strlen(text);
 245         }
 246
 247         text_entry_set_preedit(entry, text, index);
 248
 249         widget_schedule_redraw(entry->widget);
 250 }
 251
 252 static void
 253 text_model_preedit_styling(void *data,
 254                            struct text_model *text_model)
 255 {
 256 }
 257
 258 static void
 259 text_model_key(void *data,
 260                struct text_model *text_model)
 261 {
 262 }
 263
 264 static void
 265 text_model_selection_replacement(void *data,
 266                                  struct text_model *text_model)
 267 {
 268 }
 269
 270 static void
 271 text_model_direction(void *data,
 272                      struct text_model *text_model)
 273 {
 274 }
 275
 276 static void
 277 text_model_locale(void *data,
 278                   struct text_model *text_model)
 279 {
 280 }
 281
 282 static void
 283 text_model_activated(void *data,
 284                      struct text_model *text_model)
 285 {
 286         struct text_entry *entry = data;
 287
 288         entry->active = 1;
 289
 290         widget_schedule_redraw(entry->widget);
 291 }
 292
 293 static void
 294 text_model_deactivated(void *data,
 295                        struct text_model *text_model)
 296 {
 297         struct text_entry *entry = data;
 298
 299         entry->active = 0;
 300
 301         widget_schedule_redraw(entry->widget);
 302 }
 303
 304 static const struct text_model_listener text_model_listener = {
 305         text_model_commit_string,
 306         text_model_preedit_string,
 307         text_model_preedit_styling,
 308         text_model_key,
 309         text_model_selection_replacement,
 310         text_model_direction,
 311         text_model_locale,
 312         text_model_activated,
 313         text_model_deactivated
 314 };
 315
 316 static struct text_entry*
 317 text_entry_create(struct editor *editor, const char *text)
 318 {
 319         struct text_entry *entry;
 320
 321         entry = malloc(sizeof *entry);
 322
 323         entry->widget = widget_add_widget(editor->widget, entry);
 324         entry->window = editor->window;
 325         entry->text = strdup(text);
 326         entry->active = 0;
 327         entry->cursor = strlen(text);
 328         entry->anchor = entry->cursor;
 329         entry->preedit_text = NULL;
 330         entry->preedit_cursor = 0;
 331         entry->model = text_model_factory_create_text_model(editor->text_model_factory);
 332         text_model_add_listener(entry->model, &text_model_listener, entry);
 333
 334         entry->layout = text_layout_create();
 335         text_layout_set_text(entry->layout, entry->text);
 336
 337         widget_set_redraw_handler(entry->widget, text_entry_redraw_handler);
 338         widget_set_button_handler(entry->widget, text_entry_button_handler);
 339
 340         return entry;
 341 }
 342
 343 static void
 344 text_entry_destroy(struct text_entry *entry)
 345 {
 346         widget_destroy(entry->widget);
 347         text_model_destroy(entry->model);
 348         text_layout_destroy(entry->layout);
 349         free(entry->text);
 350         free(entry);
 351 }
 352
 353 static void
 354 redraw_handler(struct widget *widget, void *data)
 355 {
 356         struct editor *editor = data;
 357         cairo_surface_t *surface;
 358         struct rectangle allocation;
 359         cairo_t *cr;
 360
 361         surface = window_get_surface(editor->window);
 362         widget_get_allocation(editor->widget, &allocation);
 363
 364         cr = cairo_create(surface);
 365         cairo_rectangle(cr, allocation.x, allocation.y, allocation.width, allocation.height);
 366         cairo_clip(cr);
 367
 368         cairo_translate(cr, allocation.x, allocation.y);
 369
 370         /* Draw background */
 371         cairo_push_group(cr);
 372         cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
 373         cairo_set_source_rgba(cr, 1, 1, 1, 1);
 374         cairo_rectangle(cr, 0, 0, allocation.width, allocation.height);
 375         cairo_fill(cr);
 376
 377         cairo_pop_group_to_source(cr);
 378         cairo_paint(cr);
 379
 380         cairo_destroy(cr);
 381         cairo_surface_destroy(surface);
 382 }
 383
 384 static void
 385 text_entry_allocate(struct text_entry *entry, int32_t x, int32_t y,
 386                     int32_t width, int32_t height)
 387 {
 388         widget_set_allocation(entry->widget, x, y, width, height);
 389 }
 390
 391 static void
 392 resize_handler(struct widget *widget,
 393                int32_t width, int32_t height, void *data)
 394 {
 395         struct editor *editor = data;
 396         struct rectangle allocation;
 397
 398         widget_get_allocation(editor->widget, &allocation);
 399
 400         text_entry_allocate(editor->entry,
 401                             allocation.x + 20, allocation.y + 20,
 402                             width - 40, height / 2 - 40);
 403         text_entry_allocate(editor->editor,
 404                             allocation.x + 20, allocation.y + height / 2 + 20,
 405                             width - 40, height / 2 - 40);
 406 }
 407
 408 static void
 409 text_entry_activate(struct text_entry *entry,
 410                     struct wl_seat *seat)
 411 {
 412         struct wl_surface *surface = window_get_wl_surface(entry->window);
 413
 414         text_model_activate(entry->model,
 415                             seat,
 416                             surface);
 417 }
 418
 419 static void
 420 text_entry_deactivate(struct text_entry *entry,
 421                       struct wl_seat *seat)
 422 {
 423         text_model_deactivate(entry->model,
 424                               seat);
 425 }
 426
 427 static void
 428 text_entry_update_layout(struct text_entry *entry)
 429 {
 430         char *text;
 431
 432         assert(((unsigned int)entry->cursor) <= strlen(entry->text));
 433
 434         if (!entry->preedit_text) {
 435                 text_layout_set_text(entry->layout, entry->text);
 436                 return;
 437         }
 438
 439         text = malloc(strlen(entry->text) + strlen(entry->preedit_text) + 1);
 440         strncpy(text, entry->text, entry->cursor);
 441         strcpy(text + entry->cursor, entry->preedit_text);
 442         strcpy(text + entry->cursor + strlen(entry->preedit_text),
 443                entry->text + entry->cursor);
 444
 445         text_layout_set_text(entry->layout, text);
 446         free(text);
 447
 448         widget_schedule_redraw(entry->widget);
 449
 450         text_model_set_surrounding_text(entry->model,
 451                                         entry->text,
 452                                         entry->cursor,
 453                                         entry->anchor);
 454 }
 455
 456 static void
 457 text_entry_insert_at_cursor(struct text_entry *entry, const char *text)
 458 {
 459         char *new_text = malloc(strlen(entry->text) + strlen(text) + 1);
 460
 461         strncpy(new_text, entry->text, entry->cursor);
 462         strcpy(new_text + entry->cursor, text);
 463         strcpy(new_text + entry->cursor + strlen(text),
 464                entry->text + entry->cursor);
 465
 466         free(entry->text);
 467         entry->text = new_text;
 468         entry->cursor += strlen(text);
 469         entry->anchor += strlen(text);
 470
 471         text_entry_update_layout(entry);
 472 }
 473
 474 static void
 475 text_entry_set_preedit(struct text_entry *entry,
 476                        const char *preedit_text,
 477                        int preedit_cursor)
 478 {
 479         if (entry->preedit_text) {
 480                 free(entry->preedit_text);
 481                 entry->preedit_text = NULL;
 482                 entry->preedit_cursor = 0;
 483         }
 484
 485         if (!preedit_text)
 486                 return;
 487
 488         entry->preedit_text = strdup(preedit_text);
 489         entry->preedit_cursor = preedit_cursor;
 490
 491         text_entry_update_layout(entry);
 492 }
 493
 494 static void
 495 text_entry_set_cursor_position(struct text_entry *entry,
 496                                int32_t x, int32_t y)
 497 {
 498         entry->cursor = text_layout_xy_to_index(entry->layout, x, y);
 499
 500         if (entry->cursor >= entry->preedit_cursor) {
 501                 entry->cursor -= entry->preedit_cursor;
 502         }
 503
 504         text_entry_update_layout(entry);
 505
 506         widget_schedule_redraw(entry->widget);
 507 }
 508
 509 static void
 510 text_entry_set_anchor_position(struct text_entry *entry,
 511                                int32_t x, int32_t y)
 512 {
 513         entry->anchor = text_layout_xy_to_index(entry->layout, x, y);
 514
 515         widget_schedule_redraw(entry->widget);
 516 }
 517
 518 static void
 519 text_entry_draw_selection(struct text_entry *entry, cairo_t *cr)
 520 {
 521         cairo_text_extents_t extents;
 522         uint32_t start_index = entry->anchor < entry->cursor ? entry->anchor : entry->cursor;
 523         uint32_t end_index = entry->anchor < entry->cursor ? entry->cursor : entry->anchor;
 524         cairo_rectangle_t start;
 525         cairo_rectangle_t end;
 526
 527         if (entry->anchor == entry->cursor)
 528                 return;
 529
 530         text_layout_extents(entry->layout, &extents);
 531
 532         text_layout_index_to_pos(entry->layout, start_index, &start);
 533         text_layout_index_to_pos(entry->layout, end_index, &end);
 534
 535         cairo_save (cr);
 536
 537         cairo_set_source_rgba(cr, 0.0, 0.0, 1.0, 1.0);
 538         cairo_rectangle(cr,
 539                         start.x, extents.y_bearing + extents.height + 2,
 540                         end.x - start.x, -extents.height - 4);
 541         cairo_fill(cr);
 542
 543         cairo_rectangle(cr,
 544                         start.x, extents.y_bearing + extents.height,
 545                         end.x - start.x, -extents.height);
 546         cairo_clip(cr);
 547         cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 1.0);
 548         text_layout_draw(entry->layout, cr);
 549
 550         cairo_restore (cr);
 551 }
 552
 553 static void
 554 text_entry_draw_cursor(struct text_entry *entry, cairo_t *cr)
 555 {
 556         cairo_text_extents_t extents;
 557         cairo_rectangle_t cursor_pos;
 558
 559         text_layout_extents(entry->layout, &extents);
 560         text_layout_get_cursor_pos(entry->layout,
 561                                    entry->cursor + entry->preedit_cursor,
 562                                    &cursor_pos);
 563
 564         cairo_set_line_width(cr, 1.0);
 565         cairo_move_to(cr, cursor_pos.x, extents.y_bearing + extents.height + 2);
 566         cairo_line_to(cr, cursor_pos.x, extents.y_bearing - 2);
 567         cairo_stroke(cr);
 568 }
 569
 570 static void
 571 text_entry_draw_preedit(struct text_entry *entry, cairo_t *cr)
 572 {
 573         cairo_text_extents_t extents;
 574         cairo_rectangle_t start;
 575         cairo_rectangle_t end;
 576
 577         if (!entry->preedit_text)
 578                 return;
 579
 580         text_layout_extents(entry->layout, &extents);
 581
 582         text_layout_index_to_pos(entry->layout, entry->cursor, &start);
 583         text_layout_index_to_pos(entry->layout,
 584                                  entry->cursor + strlen(entry->preedit_text),
 585                                  &end);
 586
 587         cairo_save (cr);
 588
 589         cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0);
 590         cairo_rectangle(cr,
 591                         start.x, 0,
 592                         end.x - start.x, 1);
 593         cairo_fill(cr);
 594
 595         cairo_restore (cr);
 596 }
 597
 598 static void
 599 text_entry_redraw_handler(struct widget *widget, void *data)
 600 {
 601         struct text_entry *entry = data;
 602         cairo_surface_t *surface;
 603         struct rectangle allocation;
 604         cairo_t *cr;
 605
 606         surface = window_get_surface(entry->window);
 607         widget_get_allocation(entry->widget, &allocation);
 608
 609         cr = cairo_create(surface);
 610         cairo_rectangle(cr, allocation.x, allocation.y, allocation.width, allocation.height);
 611         cairo_clip(cr);
 612
 613         cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
 614
 615         cairo_push_group(cr);
 616         cairo_translate(cr, allocation.x, allocation.y);
 617
 618         cairo_set_source_rgba(cr, 1, 1, 1, 1);
 619         cairo_rectangle(cr, 0, 0, allocation.width, allocation.height);
 620         cairo_fill(cr);
 621
 622         cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
 623
 624         if (entry->active) {
 625                 cairo_rectangle(cr, 0, 0, allocation.width, allocation.height);
 626                 cairo_set_line_width (cr, 3);
 627                 cairo_set_source_rgba(cr, 0, 0, 1, 1.0);
 628                 cairo_stroke(cr);
 629         }
 630
 631         cairo_set_source_rgba(cr, 0, 0, 0, 1);
 632
 633         cairo_translate(cr, 10, allocation.height / 2);
 634         text_layout_draw(entry->layout, cr);
 635
 636         text_entry_draw_selection(entry, cr);
 637
 638         text_entry_draw_cursor(entry, cr);
 639
 640         text_entry_draw_preedit(entry, cr);
 641
 642         cairo_pop_group_to_source(cr);
 643         cairo_paint(cr);
 644
 645         cairo_destroy(cr);
 646         cairo_surface_destroy(surface);
 647 }
 648
 649 static int
 650 text_entry_motion_handler(struct widget *widget,
 651                           struct input *input, uint32_t time,
 652                           float x, float y, void *data)
 653 {
 654         struct text_entry *entry = data;
 655         struct rectangle allocation;
 656
 657         widget_get_allocation(entry->widget, &allocation);
 658
 659         text_entry_set_cursor_position(entry,
 660                                        x - allocation.x,
 661                                        y - allocation.y);
 662
 663         return CURSOR_IBEAM;
 664 }
 665
 666 static void
 667 text_entry_button_handler(struct widget *widget,
 668                           struct input *input, uint32_t time,
 669                           uint32_t button,
 670                           enum wl_pointer_button_state state, void *data)
 671 {
 672         struct text_entry *entry = data;
 673         struct rectangle allocation;
 674         int32_t x, y;
 675
 676         widget_get_allocation(entry->widget, &allocation);
 677         input_get_position(input, &x, &y);
 678
 679         if (button != BTN_LEFT) {
 680                 return;
 681         }
 682
 683         text_entry_set_cursor_position(entry,
 684                                        x - allocation.x,
 685                                        y - allocation.y);
 686
 687         if (state == WL_POINTER_BUTTON_STATE_PRESSED) {
 688                 struct wl_seat *seat = input_get_seat(input);
 689
 690                 text_entry_activate(entry, seat);
 691
 692                 text_entry_set_anchor_position(entry,
 693                                                x - allocation.x,
 694                                                y - allocation.y);
 695
 696                 widget_set_motion_handler(entry->widget, text_entry_motion_handler);
 697         } else {
 698                 widget_set_motion_handler(entry->widget, NULL);
 699         }
 700 }
 701
 702 static void
 703 editor_button_handler(struct widget *widget,
 704                       struct input *input, uint32_t time,
 705                       uint32_t button,
 706                       enum wl_pointer_button_state state, void *data)
 707 {
 708         struct editor *editor = data;
 709
 710         if (button != BTN_LEFT) {
 711                 return;
 712         }
 713
 714         if (state == WL_POINTER_BUTTON_STATE_PRESSED) {
 715                 struct wl_seat *seat = input_get_seat(input);
 716
 717                 text_entry_deactivate(editor->entry, seat);
 718                 text_entry_deactivate(editor->editor, seat);
 719         }
 720 }
 721
 722 static void
 723 global_handler(struct wl_display *display, uint32_t id,
 724                const char *interface, uint32_t version, void *data)
 725 {
 726         struct editor *editor = data;
 727
 728         if (!strcmp(interface, "text_model_factory")) {
 729                 editor->text_model_factory = wl_display_bind(display, id,
 730                                                              &text_model_factory_interface);
 731         }
 732 }
 733
 734 int
 735 main(int argc, char *argv[])
 736 {
 737         struct editor editor;
 738
 739         editor.display = display_create(argc, argv);
 740         if (editor.display == NULL) {
 741                 fprintf(stderr, "failed to create display: %m\n");
 742                 return -1;
 743         }
 744         wl_display_add_global_listener(display_get_display(editor.display),
 745                                        global_handler, &editor);
 746
 747
 748         editor.window = window_create(editor.display);
 749         editor.widget = frame_create(editor.window, &editor);
 750
 751         editor.entry = text_entry_create(&editor, "Entry");
 752         editor.editor = text_entry_create(&editor, "Editor");
 753         text_entry_set_preedit(editor.editor, "preedit", strlen("preedit"));
 754
 755         window_set_title(editor.window, "Text Editor");
 756
 757         widget_set_redraw_handler(editor.widget, redraw_handler);
 758         widget_set_resize_handler(editor.widget, resize_handler);
 759         widget_set_button_handler(editor.widget, editor_button_handler);
 760
 761         window_schedule_resize(editor.window, 500, 400);
 762
 763         display_run(editor.display);
 764
 765         text_entry_destroy(editor.entry);
 766         text_entry_destroy(editor.editor);
 767
 768         return 0;
 769 }