summaryrefslogtreecommitdiff
path: root/src/examples/edje/edje-drag.c
blob: 6b3f6b22aa5a777ebb5515896f4c7c66ef1ae8de (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
/**
 * Simple Edje example illustrating drag functions.
 *
 * You'll need at least one Evas engine built for it (excluding the
 * buffer one). See stdout/stderr for output.
 *
 * @verbatim
 * edje_cc drag.edc && gcc -o drag-box drag-box.c `pkg-config --libs --cflags evas ecore ecore-evas edje`
 * @endverbatim
 */

#ifdef HAVE_CONFIG_H
# include "config.h"
#else
# define EINA_UNUSED
#endif

#include <Ecore.h>
#include <Ecore_Evas.h>
#include <Edje.h>

#define WIDTH  300
#define HEIGHT 300

#define RECTW 30
#define RECTH 30

#define NRECTS 20

static const char commands[] = \
  "commands are:\n"
  "\tDdown - set drag step to 1\n"
  "\tUp - set drag step to -1\n"
  "\tm - set drag value to 0.5\n"
  "\tPrior - set drag page to -1\n"
  "\tNext - set drag page to -1\n"
  "\tEsc - exit\n"
  "\th - print help\n";

static const char *PARTNAME = "example/knob";

static void
_on_destroy(Ecore_Evas *ee EINA_UNUSED)
{
   ecore_main_loop_quit();
}

/* here just to keep our example's window size and background image's
 * size in synchrony */
static void
_on_canvas_resize(Ecore_Evas *ee)
{
   Evas_Object *bg;
   Evas_Object *edje_obj;
   int          w;
   int          h;

   bg = ecore_evas_data_get(ee, "background");
   edje_obj = ecore_evas_data_get(ee, "edje_obj");

   ecore_evas_geometry_get(ee, NULL, NULL, &w, &h);
   evas_object_resize(bg, w, h);
   evas_object_resize(edje_obj, w, h);
}

static void
_on_bg_key_down(void *data, Evas *e EINA_UNUSED, Evas_Object *o EINA_UNUSED, void *event_info)
{
   Ecore_Evas          *ee;
   Evas_Event_Key_Down *ev;
   Evas_Object         *edje_obj;

   ee = (Ecore_Evas *)data;
   ev = (Evas_Event_Key_Down *)event_info;
   edje_obj = ecore_evas_data_get(ee, "edje_obj");

   if (!strcmp(ev->keyname, "h"))
     {
        fprintf(stdout, commands);
        return;
     }
   else if (!strcmp(ev->keyname, "Down"))
     {
	edje_object_part_drag_step(edje_obj, PARTNAME, 0, 1.0);
     }
   else if (!strcmp(ev->keyname, "Up"))
     {
	edje_object_part_drag_step(edje_obj, PARTNAME, 0, -1.0);
     }
   else if (!strcmp(ev->keyname, "m"))
     {
	edje_object_part_drag_value_set(edje_obj, PARTNAME, 0.0, 0.5);
     }
   else if (!strcmp(ev->keyname, "Prior"))
     {
	edje_object_part_drag_page(edje_obj, PARTNAME, 0.0, -1.0);
     }
   else if (!strcmp(ev->keyname, "Next"))
     {
	edje_object_part_drag_page(edje_obj, PARTNAME, 0.0, 1.0);
     }
   else if (!strcmp(ev->keyname, "Escape"))
     ecore_main_loop_quit();
   else
     {
        printf("unhandled key: %s\n", ev->keyname);
        fprintf(stdout, commands);
     }
}

static void
_on_knob_moved(void *data EINA_UNUSED, Evas_Object *o, const char *emission EINA_UNUSED, const char *source EINA_UNUSED)
{
   double val;

   edje_object_part_drag_value_get(o, PARTNAME, NULL, &val);
   printf("value changed to: %0.3f\n", val);
}

int
main(int argc EINA_UNUSED, char *argv[])
{
   char         edje_file_path[PATH_MAX];
   const char  *edje_file = "drag.edj";
   Ecore_Evas  *ee;
   Evas        *evas;
   Evas_Object *bg;
   Evas_Object *edje_obj;
   Eina_Prefix *pfx;

   if (!ecore_evas_init())
     return EXIT_FAILURE;

   if (!edje_init())
     goto shutdown_ecore_evas;

   pfx = eina_prefix_new(argv[0], main,
                         "EDJE_EXAMPLES",
                         "edje/examples",
                         edje_file,
                         PACKAGE_BIN_DIR,
                         PACKAGE_LIB_DIR,
                         PACKAGE_DATA_DIR,
                         PACKAGE_DATA_DIR);
   if (!pfx)
     goto shutdown_edje;

   /* this will give you a window with an Evas canvas under the first
    * engine available */
   ee = ecore_evas_new(NULL, 0, 0, WIDTH, HEIGHT, NULL);
   if (!ee)
     goto free_prefix;

   ecore_evas_callback_destroy_set(ee, _on_destroy);
   ecore_evas_callback_resize_set(ee, _on_canvas_resize);
   ecore_evas_title_set(ee, "Edje Box Example");

   evas = ecore_evas_get(ee);

   bg = evas_object_rectangle_add(evas);
   evas_object_color_set(bg, 255, 255, 255, 255);
   evas_object_resize(bg, WIDTH, HEIGHT);
   evas_object_focus_set(bg, EINA_TRUE);
   evas_object_show(bg);
   ecore_evas_data_set(ee, "background", bg);

   evas_object_event_callback_add(bg, EVAS_CALLBACK_KEY_DOWN, _on_bg_key_down, ee);

   edje_obj = edje_object_add(evas);

   snprintf(edje_file_path, sizeof(edje_file_path),
            "%s/examples/%s", eina_prefix_data_get(pfx), edje_file);
   edje_object_file_set(edje_obj, edje_file_path, "example/group");
   evas_object_move(edje_obj, 0, 0);
   evas_object_resize(edje_obj, WIDTH, HEIGHT);
   evas_object_show(edje_obj);
   ecore_evas_data_set(ee, "edje_obj", edje_obj);

   edje_object_part_drag_size_set(edje_obj, PARTNAME, 1.0, 0.4);

   if (!edje_object_part_drag_step_set(edje_obj, PARTNAME, 0.0, 0.1))
     printf("error when setting drag step size.\n");

   if (!edje_object_part_drag_page_set(edje_obj, PARTNAME, 0.0, 0.3))
     printf("error when setting drag page step size.\n");

   edje_object_signal_callback_add(edje_obj, "drag", PARTNAME, _on_knob_moved, NULL);

   fprintf(stdout, commands);

   ecore_evas_show(ee);

   ecore_main_loop_begin();

   eina_prefix_free(pfx);
   ecore_evas_free(ee);
   ecore_evas_shutdown();
   edje_shutdown();

   return EXIT_SUCCESS;

 free_prefix:
   eina_prefix_free(pfx);
 shutdown_edje:
   edje_shutdown();
 shutdown_ecore_evas:
   ecore_evas_shutdown();

   return EXIT_FAILURE;
}