src/examples/slider_example.c

   1 /**
   2  * Simple Elementary's <b>slider widget</b> example, illustrating its
   3  * usage and API.
   4  *
   5  * See stdout/stderr for output. Compile with:
   6  *
   7  * @verbatim
   8  * gcc -g `pkg-config --cflags --libs elementary` slider_example.c -o slider_example
   9  * @endverbatim
  10  */
  11
  12 #include <Elementary.h>
  13 #ifdef HAVE_CONFIG_H
  14 # include "elementary_config.h"
  15 #else
  16 # define __UNUSED__
  17 #endif
  18
  19 static void
  20 _on_done(void *data __UNUSED__,
  21         Evas_Object *obj __UNUSED__,
  22         void *event_info __UNUSED__)
  23 {
  24    elm_exit();
  25 }
  26
  27 static void
  28 _changed_cb(void *data __UNUSED__, Evas_Object *obj, void *event_info __UNUSED__)
  29 {
  30     double val = elm_slider_value_get(obj);
  31     printf("Changed to %1.2f\n", val);
  32 }
  33
  34 static void
  35 _delay_changed_cb(void *data __UNUSED__, Evas_Object *obj, void *event_info __UNUSED__)
  36 {
  37     double val = elm_slider_value_get(obj);
  38     printf("Delay changed to %1.2f\n", val);
  39 }
  40
  41 static char*
  42 _indicator_format(double val)
  43 {
  44    char *indicator = malloc(sizeof(char) * 32);
  45    snprintf(indicator, 32, "%1.2f u", val);
  46    return indicator;
  47 }
  48
  49 static void
  50 _indicator_free(char *str)
  51 {
  52    free(str);
  53 }
  54
  55 int
  56 elm_main(int argc __UNUSED__, char **argv __UNUSED__)
  57 {
  58    Evas_Object *win, *bg, *bx, *sl, *ic;
  59
  60    win = elm_win_add(NULL, "slider", ELM_WIN_BASIC);
  61    elm_win_title_set(win, "Slider Example");
  62    evas_object_smart_callback_add(win, "delete,request", _on_done, NULL);
  63
  64    bg = elm_bg_add(win);
  65    elm_win_resize_object_add(win, bg);
  66    evas_object_size_hint_weight_set(bg, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
  67    evas_object_show(bg);
  68
  69    bx = elm_box_add(win);
  70    evas_object_size_hint_weight_set(bx, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
  71    elm_win_resize_object_add(win, bx);
  72    evas_object_show(bx);
  73
  74    /* default */
  75    sl = elm_slider_add(win);
  76    evas_object_size_hint_align_set(sl, EVAS_HINT_FILL, 0.5);
  77    evas_object_size_hint_weight_set(sl, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
  78    elm_box_pack_end(bx, sl);
  79    evas_object_show(sl);
  80
  81    /* with icon, end and label */
  82    sl = elm_slider_add(win);
  83    elm_object_text_set(sl, "Counter");
  84
  85    ic = elm_icon_add(win);
  86    elm_icon_standard_set(ic, "home");
  87    elm_icon_scale_set(ic, EINA_FALSE, EINA_FALSE);
  88    elm_object_content_part_set(sl, "icon", ic);
  89
  90    ic = elm_icon_add(win);
  91    elm_icon_standard_set(ic, "folder");
  92    elm_icon_scale_set(ic, EINA_FALSE, EINA_FALSE);
  93    elm_object_content_part_set(sl, "end", ic);
  94
  95    evas_object_size_hint_align_set(sl, EVAS_HINT_FILL, 0.5);
  96    evas_object_size_hint_weight_set(sl, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
  97    elm_box_pack_end(bx, sl);
  98    evas_object_show(sl);
  99
 100    /* value set and span size */
 101    sl = elm_slider_add(win);
 102    elm_slider_value_set(sl, 1);
 103    elm_slider_span_size_set(sl, 200);
 104    evas_object_size_hint_align_set(sl, EVAS_HINT_FILL, 0.5);
 105    evas_object_size_hint_weight_set(sl, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
 106    elm_box_pack_end(bx, sl);
 107    evas_object_show(sl);
 108
 109    /* with unit label and min - max */
 110    sl = elm_slider_add(win);
 111    elm_slider_unit_format_set(sl, "%1.0f units");
 112    elm_slider_min_max_set(sl, 0, 100);
 113    evas_object_size_hint_align_set(sl, EVAS_HINT_FILL, 0.5);
 114    evas_object_size_hint_weight_set(sl, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
 115    elm_box_pack_end(bx, sl);
 116    evas_object_show(sl);
 117
 118    /* with indicator label and inverted */
 119    sl = elm_slider_add(win);
 120    elm_slider_indicator_format_set(sl, "%1.2f");
 121    elm_slider_inverted_set(sl, EINA_TRUE);
 122    evas_object_size_hint_align_set(sl, EVAS_HINT_FILL, 0.5);
 123    evas_object_size_hint_weight_set(sl, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
 124    elm_box_pack_end(bx, sl);
 125    evas_object_show(sl);
 126
 127    /* vertical with indicator format func */
 128    sl = elm_slider_add(win);
 129    elm_slider_horizontal_set(sl, EINA_FALSE);
 130    elm_slider_indicator_format_function_set(sl, _indicator_format,
 131                                             _indicator_free);
 132    evas_object_size_hint_align_set(sl, 0.5, EVAS_HINT_FILL);
 133    evas_object_size_hint_weight_set(sl, 0, EVAS_HINT_EXPAND);
 134    elm_box_pack_end(bx, sl);
 135    evas_object_show(sl);
 136
 137    /* callbacks */
 138    sl = elm_slider_add(win);
 139    elm_slider_unit_format_set(sl, "%1.3f units");
 140    evas_object_size_hint_align_set(sl, EVAS_HINT_FILL, 0.5);
 141    evas_object_size_hint_weight_set(sl, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
 142    elm_box_pack_end(bx, sl);
 143    evas_object_show(sl);
 144    evas_object_smart_callback_add(sl, "changed", _changed_cb, NULL);
 145    evas_object_smart_callback_add(sl, "delay,changed", _delay_changed_cb, NULL);
 146
 147    evas_object_show(win);
 148
 149    elm_run();
 150    return 0;
 151 }
 152 ELM_MAIN()