src/examples/edje-color-class.c

   1 /**
   2  * Simple Edje example illustrating color class functions.
   3  *
   4  * You'll need at least one Evas engine built for it (excluding the
   5  * buffer one). See stdout/stderr for output.
   6  *
   7  * @verbatim
   8  * edje_cc color-class.edc && gcc -o edje-table edje-color-class.c `pkg-config --libs --cflags evas ecore ecore-evas edje`
   9  * @endverbatim
  10  */
  11
  12 #ifdef HAVE_CONFIG_H
  13 # include "config.h"
  14 #else
  15 # define __UNUSED__
  16 #endif
  17
  18 #include <Ecore.h>
  19 #include <Ecore_Evas.h>
  20 #include <Edje.h>
  21
  22 #define WIDTH  (400)
  23 #define HEIGHT (400)
  24
  25 typedef int color[4];           /* rgba */
  26
  27 static Ecore_Evas *ee1, *ee2;
  28 static Evas *evas1, *evas2;
  29 static Evas_Object *bg1, *edje_obj1, *bg2, *edje_obj2;
  30 static const char *selected_class;
  31
  32 static color colors_init_data[] =
  33   {{255, 0, 0, 255},            /* red */
  34    {0, 255, 0, 255},            /* green */
  35    {0, 0, 255, 255},            /* blue */
  36    {0, 0, 0, 255},              /* black */
  37    {255, 255, 255, 255},        /* white */
  38    {128, 128, 128, 255},        /* gray */
  39    {255, 255, 0, 255},          /* yellow */
  40    {255, 0, 255, 255}           /* pink */
  41   };
  42
  43 static char *color_names[] =
  44   {"red", "green", "blue", "black", "white",
  45    "gray", "yellow", "pink"};
  46
  47 static Eina_Bool
  48 _get_color_from_name(const char *n, color *c)
  49 {
  50    int i;
  51    for (i = 0; i < 8; i++)
  52      if (!strcmp(n, color_names[i]))
  53        {
  54           (*c)[0] = (colors_init_data[i])[0];
  55           (*c)[1] = (colors_init_data[i])[1];
  56           (*c)[2] = (colors_init_data[i])[2];
  57           (*c)[3] = (colors_init_data[i])[3];
  58           return EINA_TRUE;
  59        }
  60
  61    return EINA_FALSE;
  62 }
  63
  64 static void
  65 _color_classes_print(void)
  66 {
  67    Eina_List *classes;
  68    char *class_name;
  69
  70    fprintf(stdout, "Getting the color classes\n\n");
  71    classes = edje_color_class_list();
  72    EINA_LIST_FREE(classes, class_name)
  73      {
  74         int r1, r2, r3, g1, g2, g3, b1, b2, b3,
  75           a1, a2, a3;
  76
  77         fprintf(stdout, "\ncolor class: %s\n", class_name);
  78         if (!edje_color_class_get(class_name, &r1, &g1, &b1, &a1,
  79                                   &r2, &g2, &b2, &a2, &r3, &g3, &b3, &a3))
  80           fprintf(stderr, "Cannot get the color class\n");
  81         else
  82           {
  83
  84              fprintf(stdout,"Object color r: %d g: %d b: %d a: %d\n",
  85                      r1, g1, b1, a1);
  86              fprintf(stdout,"Text outline color r: %d g: %d b: %d a: %d\n",
  87                      r2, g2, b2, a2);
  88              fprintf(stdout,"Text shadow color r: %d g: %d b: %d a: %d\n",
  89                      r3, g3, b3, a3);
  90           }
  91         free(class_name);
  92      }
  93 }
  94
  95 static void
  96 _on_destroy(Ecore_Evas *ee __UNUSED__)
  97 {
  98    ecore_main_loop_quit();
  99 }
 100
 101 static void
 102 _on_mouse_down(void *data __UNUSED__, Evas *e __UNUSED__, Evas_Object *obj, void *event_info)
 103 {
 104    Evas_Event_Mouse_Down *ev = event_info;
 105
 106    if (ev->button == 1)
 107      {
 108         if (obj == edje_obj1)
 109           edje_color_class_del(selected_class);
 110         else
 111           edje_object_color_class_del(edje_obj2, selected_class);
 112      }
 113 }
 114
 115 /* here just to keep our example's window size
 116  * in synchrony. */
 117 static void
 118 _canvas_resize_cb(Ecore_Evas *_ee)
 119 {
 120    int w, h;
 121
 122    ecore_evas_geometry_get(_ee, NULL, NULL, &w, &h);
 123
 124    if (_ee == ee1)
 125      {
 126         evas_object_resize(bg1, w, h);
 127         evas_object_resize(edje_obj1, w, h);
 128      }
 129    else
 130      {
 131         evas_object_resize(bg2, w, h);
 132         evas_object_resize(edje_obj2, w, h);
 133      }
 134 }
 135
 136 static void
 137 _color_class_callback_delete(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__,
 138                              const char *emission, void *source __UNUSED__)
 139 {
 140    if (!strcmp(data, "process"))
 141      fprintf(stdout, "Color class: %s deleted on process level\n", emission);
 142    else
 143      fprintf(stdout, "Color class: %s deleted on object level\n", emission);
 144 }
 145
 146 static int
 147 _create_windows(const char *edje_file_path)
 148 {
 149   /* this will give you a window with an Evas canvas under the first
 150     * engine available */
 151    ee1 = ecore_evas_new(NULL, 0, 0, WIDTH, HEIGHT, NULL);
 152    if (!ee1)
 153      return 0;
 154    ee2 = ecore_evas_new(NULL, 0, 0, WIDTH, HEIGHT, NULL);
 155    if (!ee2)
 156      return 0;
 157
 158    ecore_evas_callback_destroy_set(ee1, _on_destroy);
 159    ecore_evas_callback_resize_set(ee1, _canvas_resize_cb);
 160    ecore_evas_title_set(ee1, "Edje Color Class Example");
 161
 162    ecore_evas_callback_destroy_set(ee2, _on_destroy);
 163    ecore_evas_callback_resize_set(ee2, _canvas_resize_cb);
 164    ecore_evas_title_set(ee2, "Edje Object Color Class Example");
 165
 166    evas1 = ecore_evas_get(ee1);
 167    evas2 = ecore_evas_get(ee2);
 168
 169    bg1 = evas_object_rectangle_add(evas1);
 170    evas_object_color_set(bg1, 255, 255, 255, 255); /* white bg */
 171    evas_object_move(bg1, 0, 0);                    /* at canvas' origin */
 172    evas_object_resize(bg1, WIDTH, HEIGHT);         /* covers full canvas */
 173    evas_object_show(bg1);
 174
 175    bg2 = evas_object_rectangle_add(evas2);
 176    evas_object_color_set(bg2, 255, 255, 255, 255); /* white bg */
 177    evas_object_move(bg2, 0, 0);                    /* at canvas' origin */
 178    evas_object_resize(bg2, WIDTH, HEIGHT);         /* covers full canvas */
 179    evas_object_show(bg2);
 180
 181    edje_obj1 = edje_object_add(evas1);
 182    evas_object_event_callback_add(edje_obj1, EVAS_CALLBACK_MOUSE_DOWN,
 183                                   _on_mouse_down, NULL);
 184
 185    edje_object_file_set(edje_obj1, edje_file_path, "example_color_class");
 186    evas_object_move(edje_obj1, 0, 0); /* at canvas' origin */
 187    evas_object_resize(edje_obj1, WIDTH, HEIGHT);
 188    edje_object_part_text_set(edje_obj1, "part_four", "EDJE EXAMPLE");
 189    edje_object_signal_callback_add(edje_obj1, "color_class,del", "*",
 190                                    (Edje_Signal_Cb) _color_class_callback_delete,
 191                                    "process");
 192    evas_object_show(edje_obj1);
 193
 194    edje_obj2 = edje_object_add(evas2);
 195    evas_object_event_callback_add(edje_obj2, EVAS_CALLBACK_MOUSE_DOWN,
 196                                   _on_mouse_down, NULL);
 197
 198    edje_object_file_set(edje_obj2, edje_file_path, "example_color_class");
 199    evas_object_move(edje_obj2, 0, 0); /* at canvas' origin */
 200    evas_object_resize(edje_obj2, WIDTH, HEIGHT);
 201    edje_object_part_text_set(edje_obj2, "part_four", "EDJE OBJECT EXAMPLE");
 202    edje_object_signal_callback_add(edje_obj2, "color_class,del", "*",
 203                                    (Edje_Signal_Cb) _color_class_callback_delete,
 204                                    "object");
 205    evas_object_show(edje_obj2);
 206
 207    return 1;
 208 }
 209
 210 int
 211 main(int argc, char *argv[])
 212 {
 213    char         edje_file_path[PATH_MAX];
 214    const char  *edje_file = "color-class.edj";
 215    Eina_Prefix *pfx;
 216    color        c1, c2, c3;
 217    int          i;
 218
 219    if (argc != 5)
 220      {
 221         fprintf(stderr, "You have to use: %s color_class_name color1, color2," \
 222                 "color3\n", argv[0]);
 223         fprintf(stderr, "Available colors:\n");
 224         for (i = 0; i < 8; i++)
 225           fprintf(stderr, "%s\n", color_names[i]);
 226
 227         return EXIT_FAILURE;
 228      }
 229
 230    selected_class = argv[1];
 231    if (!(_get_color_from_name(argv[2], &c1) &&
 232          _get_color_from_name(argv[3], &c2) &&
 233          _get_color_from_name(argv[4], &c3)))
 234      {
 235         fprintf(stderr, "Color not available!\n");
 236         return EXIT_FAILURE;
 237      }
 238
 239    if (!ecore_evas_init())
 240      return EXIT_FAILURE;
 241
 242    if (!edje_init())
 243      goto shutdown_ecore_evas;
 244
 245    pfx = eina_prefix_new(argv[0], main,
 246                          "EDJE_EXAMPLES",
 247                          "edje/examples",
 248                          edje_file,
 249                          PACKAGE_BIN_DIR,
 250                          PACKAGE_LIB_DIR,
 251                          PACKAGE_DATA_DIR,
 252                          PACKAGE_DATA_DIR);
 253    if (!pfx)
 254      goto shutdown_edje;
 255
 256    snprintf(edje_file_path, sizeof(edje_file_path),
 257             "%s/examples/%s", eina_prefix_data_get(pfx), edje_file);
 258    if (!_create_windows(edje_file_path))
 259      goto free_prefix;
 260
 261    edje_color_class_set(argv[1],                     /* class name   */
 262                         c1[0], c1[1], c1[2], c1[3],  /* Object color */
 263                         c2[0], c2[1], c2[2], c2[3],  /* Text outline */
 264                         c3[0], c3[1], c3[2], c3[3]); /* Text shadow  */
 265
 266    /* Setting an arbitrary value just to see the difference between */
 267    /* process level and object level */
 268    edje_object_color_class_set(edje_obj2, argv[1], /* class name   */
 269                                128, 180, 77, 255,  /* Object color */
 270                                200, 22, 86, 255,   /* Text outline */
 271                                39, 90, 187, 255);  /* Text shadow  */
 272
 273    _color_classes_print();
 274
 275    ecore_evas_show(ee1);
 276    ecore_evas_show(ee2);
 277
 278    ecore_main_loop_begin();
 279
 280    eina_prefix_free(pfx);
 281    ecore_evas_free(ee1);
 282    ecore_evas_shutdown();
 283    edje_shutdown();
 284
 285    return EXIT_SUCCESS;
 286
 287  free_prefix:
 288    eina_prefix_free(pfx);
 289  shutdown_edje:
 290    edje_shutdown();
 291  shutdown_ecore_evas:
 292    ecore_evas_shutdown();
 293
 294    return EXIT_FAILURE;
 295 }