/src/ftk_list_view.c
C | 543 lines | 434 code | 80 blank | 29 comment | 55 complexity | dd8d790086ac2fdff6d0eccf338941a7 MD5 | raw file
1/* 2 * File: ftk_list_view.h 3 * Author: Li XianJing <xianjimli@hotmail.com> 4 * Brief: list view 5 * 6 * Copyright (c) 2009 - 2010 Li XianJing <xianjimli@hotmail.com> 7 * 8 * Licensed under the Academic Free License version 2.1 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License as published by 12 * the Free Software Foundation; either version 2 of the License, or 13 * (at your option) any later version. 14 * 15 * This program is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 23 */ 24 25/* 26 * History: 27 * ================================================================ 28 * 2009-11-15 Li XianJing <xianjimli@hotmail.com> created 29 * 30 */ 31 32#include "ftk_key.h" 33#include "ftk_event.h" 34#include "ftk_theme.h" 35#include "ftk_globals.h" 36#include "ftk_window.h" 37#include "ftk_list_view.h" 38#include "ftk_scroll_bar.h" 39 40typedef struct _ListViewPrivInfo 41{ 42 int current; 43 int visible_nr; 44 int item_height; 45 int visible_start; 46 47 int is_active; 48 int top_margin; 49 int botton_margin; 50 int scrolled_by_me; 51 FtkListModel* model; 52 FtkListRender* render; 53 FtkWidget* vscroll_bar; 54 55 FtkBitmap* bg_normal; 56 FtkBitmap* bg_focus; 57 FtkBitmap* bg_active; 58 59 void* listener_ctx; 60 FtkListener listener; 61}PrivInfo; 62 63Ret ftk_list_view_set_cursor(FtkWidget* thiz, int current) 64{ 65 DECL_PRIV0(thiz, priv); 66 int total = ftk_list_model_get_total(priv->model); 67 return_val_if_fail(total > 0, RET_FAIL); 68 69 if(priv->current == current) 70 { 71 ftk_widget_invalidate(thiz); 72 73 return RET_OK; 74 } 75 76 priv->current = current; 77 78 if(priv->current < 0) priv->current = 0; 79 if(priv->current >= total) priv->current = total - 1; 80 81 if(priv->current < priv->visible_start) 82 { 83 priv->visible_start = priv->current; 84 } 85 86 if(priv->current > (priv->visible_start + priv->visible_nr - 1)) 87 { 88 priv->visible_start = priv->current - (priv->visible_nr - 1); 89 } 90 91 ftk_widget_invalidate(thiz); 92 93 return RET_REMOVE; 94} 95 96static Ret ftk_list_view_move_cursor(FtkWidget* thiz, int offset) 97{ 98 DECL_PRIV0(thiz, priv); 99 int total = ftk_list_model_get_total(priv->model); 100 return_val_if_fail(total > 0, RET_FAIL); 101 return_val_if_fail(priv->visible_nr > 0, RET_FAIL); 102 103 if(priv->current == 0 && offset < 0) 104 { 105 return RET_FAIL; 106 } 107 else if((priv->current + 1) == total && offset > 0) 108 { 109 return RET_FAIL; 110 } 111 112 return ftk_list_view_set_cursor(thiz, priv->current + offset); 113} 114 115static Ret ftk_list_view_set_cursor_by_pointer(FtkWidget* thiz, int x, int y) 116{ 117 int current = 0; 118 DECL_PRIV0(thiz, priv); 119 int offset = y - ftk_widget_top_abs(thiz) - priv->top_margin; 120 if(offset <= 0) return RET_OK; 121 122 current = priv->visible_start + offset/priv->item_height; 123 124 return ftk_list_view_set_cursor(thiz, current); 125} 126 127static Ret ftk_list_view_on_key_event(FtkWidget* thiz, FtkEvent* event) 128{ 129 Ret ret = RET_OK; 130 DECL_PRIV0(thiz, priv); 131 switch(event->u.key.code) 132 { 133 case FTK_KEY_DOWN: 134 { 135 if(event->type == FTK_EVT_KEY_DOWN) 136 { 137 ret = ftk_list_view_move_cursor(thiz, 1); 138 } 139 break; 140 } 141 case FTK_KEY_UP: 142 { 143 if(event->type == FTK_EVT_KEY_DOWN) 144 { 145 ret = ftk_list_view_move_cursor(thiz, -1); 146 } 147 break; 148 } 149 case FTK_KEY_HOME: 150 { 151 ftk_list_view_set_cursor(thiz, 0); 152 break; 153 } 154 case FTK_KEY_END: 155 { 156 int total = ftk_list_model_get_total(priv->model); 157 if(total > priv->visible_nr) 158 { 159 ftk_list_view_set_cursor(thiz, total-1); 160 } 161 break; 162 } 163 case FTK_KEY_PAGEDOWN: 164 { 165 int total = ftk_list_model_get_total(priv->model); 166 if(total > priv->visible_nr) 167 { 168 int max = total - priv->visible_nr; 169 int index = priv->current + priv->visible_nr; 170 171 ftk_list_view_set_cursor(thiz, FTK_MIN(max, index)); 172 } 173 break; 174 } 175 case FTK_KEY_PAGEUP: 176 { 177 int total = ftk_list_model_get_total(priv->model); 178 if(total > priv->visible_nr) 179 { 180 int index = priv->current - priv->visible_nr; 181 182 ftk_list_view_set_cursor(thiz, index > 0 ? index : 0); 183 } 184 break; 185 } 186 default: 187 { 188 if(FTK_IS_ACTIVE_KEY(event->u.key.code)) 189 { 190 if(event->type == FTK_EVT_KEY_DOWN) 191 { 192 priv->is_active = 1; 193 ftk_list_view_set_cursor(thiz, priv->current); 194 } 195 else 196 { 197 FTK_CALL_LISTENER(priv->listener, priv->listener_ctx, thiz); 198 priv->is_active = 0; 199 ftk_list_view_set_cursor(thiz, priv->current); 200 } 201 } 202 203 break; 204 } 205 } 206 207 return ret; 208} 209 210static Ret ftk_list_view_on_mouse_event(FtkWidget* thiz, FtkEvent* event) 211{ 212 Ret ret = RET_OK; 213 DECL_PRIV0(thiz, priv); 214 215 switch(event->type) 216 { 217 case FTK_EVT_MOUSE_DOWN: 218 { 219 priv->is_active = 1; 220 ftk_list_view_set_cursor_by_pointer(thiz, event->u.mouse.x, event->u.mouse.y); 221 ftk_window_grab(ftk_widget_toplevel(thiz), thiz); 222 break; 223 } 224 case FTK_EVT_MOUSE_UP: 225 { 226 ftk_window_ungrab(ftk_widget_toplevel(thiz), thiz); 227 if(priv->is_active) 228 { 229 ret = FTK_CALL_LISTENER(priv->listener, priv->listener_ctx, thiz); 230 priv->is_active = 0; 231 ftk_list_view_set_cursor_by_pointer(thiz, event->u.mouse.x, event->u.mouse.y); 232 } 233 break; 234 } 235 default:break; 236 } 237 238 return ret; 239} 240 241static Ret ftk_list_view_on_event(FtkWidget* thiz, FtkEvent* event) 242{ 243 Ret ret = RET_FAIL; 244 DECL_PRIV0(thiz, priv); 245 246 switch(event->type) 247 { 248 case FTK_EVT_KEY_UP: 249 case FTK_EVT_KEY_DOWN: 250 { 251 ret = ftk_list_view_on_key_event(thiz, event); 252 break; 253 } 254 case FTK_EVT_MOUSE_UP: 255 case FTK_EVT_MOUSE_DOWN: 256 { 257 ret = ftk_list_view_on_mouse_event(thiz, event); 258 break; 259 } 260 case FTK_EVT_RESIZE: 261 case FTK_EVT_MOVE_RESIZE: 262 { 263 if(priv->item_height > 0) 264 { 265 priv->visible_nr = ftk_widget_height(thiz)/priv->item_height; 266 } 267 break; 268 } 269 default:break; 270 } 271 272 return ret; 273} 274 275Ret ftk_list_view_repaint_focus_item(FtkWidget* thiz) 276{ 277 int i = 0; 278 int w = 0; 279 int dx = 0; 280 int dy = 0; 281 FtkRect rect = {0}; 282 int scroll_bar_width = 0; 283 DECL_PRIV0(thiz, priv); 284 FtkBitmap* bitmap = NULL; 285 int total = ftk_list_model_get_total(priv->model); 286 FTK_BEGIN_PAINT(x, y, width, height, canvas); 287 288 (void)height; 289 i = priv->current; 290 if(i < priv->visible_start || i > (priv->visible_nr + priv->visible_start)) 291 { 292 return RET_OK; 293 } 294 295 scroll_bar_width = priv->visible_nr >= total ? 0 : FTK_SCROLL_BAR_WIDTH; 296 297 dx = x + FTK_H_MARGIN; 298 dy = y + priv->top_margin + (i - priv->visible_start) * priv->item_height; 299 300 bitmap = priv->is_active ? priv->bg_active : priv->bg_focus; 301 302 w = width - 2 * FTK_H_MARGIN - scroll_bar_width; 303 ftk_canvas_set_gc(canvas, ftk_widget_get_gc(thiz)); 304 ftk_canvas_draw_bg_image(canvas, bitmap, FTK_BG_FOUR_CORNER, dx, dy, w, priv->item_height); 305 ftk_list_render_paint(priv->render, canvas, priv->visible_start + i, dx, dy, w, priv->item_height); 306 307 rect.x = dx; 308 rect.y = dy; 309 rect.width = w; 310 rect.height = priv->item_height; 311 312 return ftk_widget_update_rect(thiz, &rect); 313} 314 315static Ret ftk_list_view_on_paint(FtkWidget* thiz) 316{ 317 int i = 0; 318 int dx = 0; 319 int dy = 0; 320 int scroll_bar_width = 0; 321 DECL_PRIV0(thiz, priv); 322 FtkBitmap* bitmap = NULL; 323 int total = ftk_list_model_get_total(priv->model); 324 FTK_BEGIN_PAINT(x, y, width, height, canvas); 325 326 (void)height; 327 if((priv->visible_start + priv->visible_nr) >= total) 328 { 329 int visible_start = total - priv->visible_nr; 330 priv->visible_start = (visible_start >= 0) ? visible_start : 0; 331 } 332 333 if(priv->current >= total) 334 { 335 priv->current = total - 1; 336 } 337 338 scroll_bar_width = priv->visible_nr >= total ? 0 : FTK_SCROLL_BAR_WIDTH; 339 dy = y + priv->top_margin; 340 ftk_canvas_set_gc(canvas, ftk_widget_get_gc(thiz)); 341 for(i = 0; i < priv->visible_nr; i++) 342 { 343 int w = 0; 344 if((priv->visible_start + i) >= total) 345 { 346 break; 347 } 348 349 if((priv->visible_start + i) == priv->current) 350 { 351 bitmap = priv->is_active ? priv->bg_active : priv->bg_focus; 352 } 353 else 354 { 355 bitmap = priv->bg_normal; 356 } 357 358 dx = x + FTK_H_MARGIN; 359 w = width - 2 * FTK_H_MARGIN - scroll_bar_width; 360 ftk_canvas_draw_bg_image(canvas, bitmap, FTK_BG_FOUR_CORNER, dx, dy, w, priv->item_height); 361 ftk_canvas_set_gc(canvas, ftk_widget_get_gc(thiz)); 362 ftk_list_render_paint(priv->render, canvas, priv->visible_start + i, dx, dy, w, priv->item_height); 363 dy += priv->item_height; 364 } 365 366 priv->scrolled_by_me = 1; 367 if(priv->visible_nr >= total) 368 { 369 ftk_widget_show(priv->vscroll_bar, 0); 370 } 371 else 372 { 373 ftk_scroll_bar_set_param(priv->vscroll_bar, priv->visible_start, total, priv->visible_nr); 374 ftk_widget_show(priv->vscroll_bar, 1); 375 } 376 priv->scrolled_by_me = 0; 377 378 FTK_END_PAINT(); 379} 380 381static void ftk_list_view_destroy(FtkWidget* thiz) 382{ 383 if(thiz != NULL) 384 { 385 DECL_PRIV0(thiz, priv); 386 387 ftk_list_render_destroy(priv->render); 388 ftk_list_model_unref(priv->model); 389 ftk_bitmap_unref(priv->bg_normal); 390 ftk_bitmap_unref(priv->bg_focus); 391 ftk_bitmap_unref(priv->bg_active); 392 FTK_ZFREE(priv, sizeof(PrivInfo)); 393 } 394 395 return; 396} 397 398FtkWidget* ftk_list_view_create(FtkWidget* parent, int x, int y, int width, int height) 399{ 400 FtkWidget* thiz = (FtkWidget*)FTK_ZALLOC(sizeof(FtkWidget)); 401 return_val_if_fail(thiz != NULL, NULL); 402 403 thiz->priv_subclass[0] = (PrivInfo*)FTK_ZALLOC(sizeof(PrivInfo)); 404 if(thiz->priv_subclass[0] != NULL) 405 { 406 DECL_PRIV0(thiz, priv); 407 thiz->on_event = ftk_list_view_on_event; 408 thiz->on_paint = ftk_list_view_on_paint; 409 thiz->destroy = ftk_list_view_destroy; 410 411 ftk_widget_init(thiz, FTK_LIST_VIEW, 0, x, y, width, height, FTK_ATTR_BG_FOUR_CORNER); 412 ftk_widget_append_child(parent, thiz); 413 414 priv->bg_normal = ftk_theme_load_image(ftk_default_theme(), 415 "list_selector_background_normal"FTK_STOCK_IMG_SUFFIX); 416 priv->bg_focus = ftk_theme_load_image(ftk_default_theme(), 417 "list_selector_background_focus"FTK_STOCK_IMG_SUFFIX); 418 priv->bg_active = ftk_theme_load_image(ftk_default_theme(), 419 "list_selector_background_pressed"FTK_STOCK_IMG_SUFFIX); 420 } 421 else 422 { 423 FTK_ZFREE(thiz, sizeof(FtkWidget)); 424 } 425 426 return thiz; 427} 428 429static Ret ftk_list_view_on_scroll(FtkWidget* thiz, void* obj) 430{ 431 DECL_PRIV0(thiz, priv); 432 433 if(!priv->scrolled_by_me) 434 { 435 int value = ftk_scroll_bar_get_value(priv->vscroll_bar); 436 int total = ftk_list_model_get_total(priv->model); 437 value = (value + priv->visible_nr) < total ? value : total - priv->visible_nr; 438 439 if(value != priv->visible_start) 440 { 441 priv->visible_start = value; 442 ftk_list_view_set_cursor(thiz, value); 443 } 444 } 445 446 return RET_OK; 447} 448 449static Ret ftk_list_view_on_model_changed(void* ctx, void* obj) 450{ 451 FtkWidget* thiz = (FtkWidget*)ctx; 452 if(thiz) 453 { 454 (void)obj; 455 if(ftk_widget_is_visible(thiz)) 456 { 457 ftk_widget_invalidate(thiz); 458 } 459 } 460 461 return RET_OK; 462} 463 464Ret ftk_list_view_init(FtkWidget* thiz, FtkListModel* model, FtkListRender* render, int item_height) 465{ 466 int width = 0; 467 int margin = 0; 468 DECL_PRIV0(thiz, priv); 469 return_val_if_fail(priv != NULL && render != NULL && model != NULL && item_height > 0, RET_FAIL); 470 471 priv->model = model; 472 priv->render = render; 473 priv->item_height = item_height; 474 ftk_list_render_init(render, model, thiz); 475 ftk_list_model_set_changed_listener(model, ftk_list_view_on_model_changed, thiz); 476 width = ftk_widget_width(thiz); 477 478 ftk_list_model_ref(priv->model); 479 margin = ftk_widget_height(thiz)%item_height; 480 priv->visible_nr = ftk_widget_height(thiz)/item_height; 481 return_val_if_fail(priv->visible_nr > 0, RET_FAIL); 482 483 priv->top_margin = FTK_V_MARGIN;//FTK_HALF(margin); 484 priv->botton_margin = margin-FTK_V_MARGIN;//FTK_HALF(margin); 485 priv->visible_start = 0; 486 priv->current = 0; 487 priv->is_active = 0; 488 priv->vscroll_bar = ftk_scroll_bar_create(thiz, width - FTK_SCROLL_BAR_WIDTH, priv->top_margin, 489 FTK_SCROLL_BAR_WIDTH, item_height * priv->visible_nr); 490 ftk_widget_set_attr(priv->vscroll_bar, FTK_ATTR_NO_FOCUS); 491 ftk_scroll_bar_set_listener(priv->vscroll_bar, (FtkListener)ftk_list_view_on_scroll, thiz); 492 493 return RET_OK; 494} 495 496int ftk_list_view_get_selected(FtkWidget* thiz) 497{ 498 DECL_PRIV0(thiz, priv); 499 return_val_if_fail(priv != NULL, -1); 500 501 return priv->current; 502} 503 504FtkListModel* ftk_list_view_get_model(FtkWidget* thiz) 505{ 506 DECL_PRIV0(thiz, priv); 507 return_val_if_fail(priv != NULL, NULL); 508 509 return priv->model; 510} 511 512Ret ftk_list_view_set_clicked_listener(FtkWidget* thiz, FtkListener listener, void* ctx) 513{ 514 DECL_PRIV0(thiz, priv); 515 return_val_if_fail(priv != NULL, RET_FAIL); 516 517 priv->listener = listener; 518 priv->listener_ctx = ctx; 519 520 return RET_OK; 521} 522 523#include "ftk_list_model_default.h" 524#include "ftk_list_render_default.h" 525 526FtkWidget* ftk_list_view_default_create(FtkWidget* parent, int x, int y, int width, int height) 527{ 528 FtkWidget* list = NULL; 529 FtkListModel* model = NULL; 530 FtkListRender* render = NULL; 531 532 return_val_if_fail(parent != NULL, NULL); 533 534 model = ftk_list_model_default_create(10); 535 render = ftk_list_render_default_create(); 536 list = ftk_list_view_create(parent, 10, 5, width - 20, 3 * height/4-5); 537 538 ftk_list_render_default_set_marquee_attr(render, FTK_MARQUEE_AUTO | FTK_MARQUEE_RIGHT2LEFT | FTK_MARQUEE_FOREVER); 539 ftk_list_view_init(list, model, render, 40); 540 ftk_list_model_unref(model); 541 542 return list; 543}