src/examples/progressbar_example.c

   1 /**
   2  * Simple Elementary's <b>progress bar widget</b> example, illustrating its
   3  * usage and API.
   4  *
   5  * See stdout/stderr for output. Compile with:
   6  *
   7  * @verbatim
   8  * gcc -g progressbar_example.c -o progressbar_example `pkg-config --cflags --libs elementary`
   9  * @endverbatim
  10  */
  11
  12 #include <Elementary.h>
  13
  14 #include <time.h>
  15
  16 typedef struct Progressbar_Example
  17 {
  18    Evas_Object *pb1;
  19    Evas_Object *pb2; /* pulsing */
  20    Evas_Object *pb3;
  21    Evas_Object *pb4;
  22    Evas_Object *pb5;
  23    Evas_Object *pb6; /* pulsing */
  24    Evas_Object *pb7;
  25    Evas_Object *pb8; /* pulsing */
  26
  27    Eina_Bool    run;
  28    Ecore_Timer *timer;
  29 } Progressbar_Example;
  30
  31 static Progressbar_Example example_data;
  32
  33 static Eina_Bool
  34 _progressbar_example_value_set(void *data)
  35 {
  36    double progress;
  37
  38    progress = elm_progressbar_value_get(example_data.pb1);
  39    if (progress < 1.0) progress += 0.0123;
  40    else progress = 0.0;
  41
  42    /* just the non-pulsing ones need an update */
  43    elm_progressbar_value_set(example_data.pb1, progress);
  44    elm_progressbar_value_set(example_data.pb3, progress);
  45    elm_progressbar_value_set(example_data.pb4, progress);
  46    elm_progressbar_value_set(example_data.pb5, progress);
  47    elm_progressbar_value_set(example_data.pb7, progress);
  48
  49    if (progress < 1.0) return ECORE_CALLBACK_RENEW;
  50
  51    example_data.run = 0;
  52    return ECORE_CALLBACK_CANCEL;
  53 }
  54
  55 static void
  56 _progressbar_example_start(void        *data,
  57                            Evas_Object *obj,
  58                            void        *event_info)
  59 {
  60    elm_progressbar_pulse(example_data.pb2, EINA_TRUE);
  61    elm_progressbar_pulse(example_data.pb6, EINA_TRUE);
  62    elm_progressbar_pulse(example_data.pb8, EINA_TRUE);
  63
  64    if (!example_data.run)
  65      {
  66         example_data.timer = ecore_timer_add(
  67             0.1, _progressbar_example_value_set, NULL);
  68         example_data.run = EINA_TRUE;
  69      }
  70 }
  71
  72 /* end of show */
  73 static void
  74 _progressbar_example_stop(void        *data,
  75                           Evas_Object *obj,
  76                           void        *event_info)
  77 {
  78    elm_progressbar_pulse(example_data.pb2, EINA_FALSE);
  79    elm_progressbar_pulse(example_data.pb6, EINA_FALSE);
  80    elm_progressbar_pulse(example_data.pb8, EINA_FALSE);
  81
  82    if (example_data.run)
  83      {
  84         ecore_timer_del(example_data.timer);
  85         example_data.run = EINA_FALSE;
  86      }
  87 }
  88
  89 /* Format callback */
  90 static char *
  91 _progress_format_cb(double val)
  92 {
  93    static char buf[30];
  94    int files = (1-val)*14000;
  95    if (snprintf(buf, 30, "%i files left", files) > 0)
  96      return strdup(buf);
  97    return NULL;
  98 }
  99
 100 static void
 101 _progress_format_free(char *str)
 102 {
 103    free(str);
 104 }
 105
 106 /* Callback for "changed" signal */
 107 static void
 108 _on_changed(void        *data,
 109             Evas_Object *obj,
 110             void        *event_info)
 111 {
 112    static char buf[30];
 113    static time_t tstart = 0;
 114    static double eta = 0;
 115    time_t tdiff;
 116    double val;
 117    Evas_Object *label =  (Evas_Object *)data;
 118
 119    val = elm_progressbar_value_get(obj);
 120    if (val == 0)
 121      {
 122         tstart = 0;
 123         elm_object_text_set(label, "ETA: N/A");
 124         return;
 125      }
 126
 127    /* First invocation */
 128    if (tstart == 0)
 129      {
 130         tstart = time(NULL);
 131      }
 132
 133    /* Calculate ETA and update */
 134    tdiff = time(NULL) - tstart;
 135    eta = 0.3*eta + 0.7*(tdiff/val)*(1-val);
 136    snprintf(buf, 30, "ETA: %.0fs", eta);
 137    elm_object_text_set(label, buf);
 138 }
 139
 140 static void
 141 _on_done(void        *data,
 142          Evas_Object *obj,
 143          void        *event_info)
 144 {
 145    _progressbar_example_stop(NULL, NULL, NULL);
 146    elm_exit();
 147 }
 148
 149 EAPI_MAIN int
 150 elm_main(int    argc,
 151          char **argv)
 152 {
 153    Evas_Object *win, *bg, *pb, *bx, *hbx, *bt, *bt_bx, *ic1, *ic2, *label;
 154    char buf[PATH_MAX];
 155
 156    elm_app_info_set(elm_main, "elementary", "images/logo_small.png");
 157    win = elm_win_add(NULL, "progressbar", ELM_WIN_BASIC);
 158    elm_win_title_set(win, "Progress bar example");
 159    evas_object_smart_callback_add(win, "delete,request", _on_done, NULL);
 160
 161    bg = elm_bg_add(win);
 162    elm_win_resize_object_add(win, bg);
 163    evas_object_size_hint_weight_set(bg, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
 164    evas_object_show(bg);
 165
 166    bx = elm_box_add(win);
 167    elm_win_resize_object_add(win, bx);
 168    evas_object_size_hint_weight_set(bx, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
 169    evas_object_show(bx);
 170
 171    /* pb with no label, default unit label and no icon */
 172    pb = elm_progressbar_add(win);
 173    evas_object_size_hint_weight_set(pb, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
 174    evas_object_size_hint_align_set(pb, EVAS_HINT_FILL, 0.5);
 175    elm_box_pack_end(bx, pb);
 176    evas_object_show(pb);
 177    example_data.pb1 = pb;
 178
 179    /* pb with label, and set to pulse */
 180    pb = elm_progressbar_add(win);
 181    evas_object_size_hint_align_set(pb, EVAS_HINT_FILL, 0.5);
 182    evas_object_size_hint_weight_set(pb, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
 183    elm_object_text_set(pb, "Infinite bounce");
 184    elm_progressbar_pulse_set(pb, EINA_TRUE);
 185    elm_box_pack_end(bx, pb);
 186    evas_object_show(pb);
 187    example_data.pb2 = pb;
 188
 189    ic1 = elm_icon_add(win);
 190    snprintf(buf, sizeof(buf), "%s/images/logo_small.png", elm_app_data_dir_get());
 191    elm_image_file_set(ic1, buf, NULL);
 192    evas_object_size_hint_aspect_set(ic1, EVAS_ASPECT_CONTROL_VERTICAL, 1, 1);
 193
 194    /* pb with label, icon, custom unit label function and span size set */
 195    pb = elm_progressbar_add(win);
 196    elm_object_text_set(pb, "Label");
 197    elm_object_part_content_set(pb, "icon", ic1);
 198    elm_progressbar_inverted_set(pb, EINA_TRUE);
 199    elm_progressbar_unit_format_function_set(pb, _progress_format_cb,
 200                                             _progress_format_free);
 201    elm_progressbar_span_size_set(pb, 200);
 202    evas_object_size_hint_align_set(pb, EVAS_HINT_FILL, 0.5);
 203    evas_object_size_hint_weight_set(pb, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
 204    elm_box_pack_end(bx, pb);
 205    evas_object_show(ic1);
 206    evas_object_show(pb);
 207    example_data.pb3 = pb;
 208
 209    /* pb with label and changed trigger  */
 210    pb = elm_progressbar_add(win);
 211    elm_object_text_set(pb, "Label");
 212    evas_object_size_hint_align_set(pb, EVAS_HINT_FILL, 0.5);
 213    evas_object_size_hint_weight_set(pb, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
 214    elm_box_pack_end(bx, pb);
 215    evas_object_show(pb);
 216
 217    label = elm_label_add(win);
 218    elm_object_text_set(label, "ETA: N/A");
 219    evas_object_size_hint_align_set(label, 0.5, 0.5);
 220    evas_object_size_hint_weight_set(label, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
 221    elm_box_pack_end(bx, label);
 222    evas_object_show(label);
 223
 224    evas_object_smart_callback_add(pb, "changed", _on_changed, label);
 225    example_data.pb4 = pb;
 226
 227    hbx = elm_box_add(win);
 228    elm_box_horizontal_set(hbx, EINA_TRUE);
 229    evas_object_size_hint_weight_set(hbx, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
 230    evas_object_size_hint_align_set(hbx, EVAS_HINT_FILL, EVAS_HINT_FILL);
 231    elm_box_pack_end(bx, hbx);
 232    evas_object_show(hbx);
 233
 234    /* vertical pb */
 235    pb = elm_progressbar_add(win);
 236    elm_progressbar_horizontal_set(pb, EINA_FALSE);
 237    evas_object_size_hint_align_set(pb, EVAS_HINT_FILL, EVAS_HINT_FILL);
 238    evas_object_size_hint_weight_set(pb, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
 239    elm_box_pack_end(hbx, pb);
 240    elm_object_text_set(pb, "percent");
 241    evas_object_show(pb);
 242    example_data.pb5 = pb;
 243
 244    /* vertical pb, with pulse and custom (small) span size */
 245    pb = elm_progressbar_add(win);
 246    elm_progressbar_horizontal_set(pb, EINA_FALSE);
 247    evas_object_size_hint_align_set(pb, EVAS_HINT_FILL, 0.5);
 248    evas_object_size_hint_weight_set(pb, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
 249    elm_progressbar_span_size_set(pb, 80);
 250    elm_progressbar_pulse_set(pb, EINA_TRUE);
 251    elm_progressbar_unit_format_set(pb, NULL);
 252    elm_object_text_set(pb, "Infinite bounce");
 253    elm_box_pack_end(hbx, pb);
 254    evas_object_show(pb);
 255    example_data.pb6 = pb;
 256
 257    ic2 = elm_icon_add(win);
 258    elm_image_file_set(ic2, buf, NULL);
 259    evas_object_size_hint_aspect_set(ic2, EVAS_ASPECT_CONTROL_HORIZONTAL, 1, 1);
 260
 261    /* vertical pb, inverted, with custom unit format and icon*/
 262    pb = elm_progressbar_add(win);
 263    elm_progressbar_horizontal_set(pb, EINA_FALSE);
 264    elm_object_text_set(pb, "Label");
 265    elm_object_part_content_set(pb, "icon", ic2);
 266    elm_progressbar_inverted_set(pb, EINA_TRUE);
 267    elm_progressbar_unit_format_set(pb, "%1.2f%%");
 268    elm_progressbar_span_size_set(pb, 200);
 269    evas_object_size_hint_align_set(pb, EVAS_HINT_FILL, 0.5);
 270    evas_object_size_hint_weight_set(pb, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
 271    elm_box_pack_end(hbx, pb);
 272    evas_object_show(ic2);
 273    evas_object_show(pb);
 274    example_data.pb7 = pb;
 275
 276    /* "wheel" style progress bar */
 277    pb = elm_progressbar_add(win);
 278    elm_object_style_set(pb, "wheel");
 279    elm_object_text_set(pb, "Style: wheel");
 280    evas_object_size_hint_align_set(pb, EVAS_HINT_FILL, 0.5);
 281    evas_object_size_hint_weight_set(pb, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
 282    elm_box_pack_end(bx, pb);
 283    evas_object_show(pb);
 284    example_data.pb8 = pb;
 285
 286    bt_bx = elm_box_add(win);
 287    elm_box_horizontal_set(bt_bx, EINA_TRUE);
 288    evas_object_size_hint_weight_set(bt_bx, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
 289    elm_box_pack_end(bx, bt_bx);
 290    evas_object_show(bt_bx);
 291
 292    bt = elm_button_add(win);
 293    elm_object_text_set(bt, "Start");
 294    evas_object_smart_callback_add(bt, "clicked", _progressbar_example_start,
 295                                   NULL);
 296    elm_box_pack_end(bt_bx, bt);
 297    evas_object_show(bt);
 298
 299    bt = elm_button_add(win);
 300    elm_object_text_set(bt, "Stop");
 301    evas_object_smart_callback_add(bt, "clicked", _progressbar_example_stop,
 302                                   NULL);
 303    elm_box_pack_end(bt_bx, bt);
 304    evas_object_show(bt);
 305
 306    evas_object_show(win);
 307
 308    elm_run();
 309    elm_shutdown();
 310
 311    return 0;
 312 }
 313 ELM_MAIN()