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author | David Walter Seikel | 2012-01-04 18:41:13 +1000 |
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committer | David Walter Seikel | 2012-01-04 18:41:13 +1000 |
commit | dd7595a3475407a7fa96a97393bae8c5220e8762 (patch) | |
tree | e341e911d7eb911a51684a7412ef7f7c7605d28e /libraries/evas/src/examples/evas-images2.c | |
parent | Add the skeleton. (diff) | |
download | SledjHamr-dd7595a3475407a7fa96a97393bae8c5220e8762.zip SledjHamr-dd7595a3475407a7fa96a97393bae8c5220e8762.tar.gz SledjHamr-dd7595a3475407a7fa96a97393bae8c5220e8762.tar.bz2 SledjHamr-dd7595a3475407a7fa96a97393bae8c5220e8762.tar.xz |
Add the base Enlightenment Foundation Libraries - eina, eet, evas, ecore, embryo, and edje.
Note that embryo wont be used, but I'm not sure yet if you can build edje without it.
Diffstat (limited to 'libraries/evas/src/examples/evas-images2.c')
-rw-r--r-- | libraries/evas/src/examples/evas-images2.c | 204 |
1 files changed, 204 insertions, 0 deletions
diff --git a/libraries/evas/src/examples/evas-images2.c b/libraries/evas/src/examples/evas-images2.c new file mode 100644 index 0000000..ba7766c --- /dev/null +++ b/libraries/evas/src/examples/evas-images2.c | |||
@@ -0,0 +1,204 @@ | |||
1 | /** | ||
2 | * Simple Evas example illustrating some image objects functions | ||
3 | * | ||
4 | * You'll need at least one engine built for it (excluding the buffer | ||
5 | * one) and the png image loader/saver also built. See stdout/stderr | ||
6 | * for output. | ||
7 | * | ||
8 | * @verbatim | ||
9 | * gcc -o evas-images2 evas-images2.c `pkg-config --libs --cflags evas ecore ecore-evas` | ||
10 | * @endverbatim | ||
11 | */ | ||
12 | |||
13 | #ifdef HAVE_CONFIG_H | ||
14 | |||
15 | #include "config.h" | ||
16 | #else | ||
17 | |||
18 | #define PACKAGE_EXAMPLES_DIR "." | ||
19 | #define __UNUSED__ | ||
20 | |||
21 | #endif | ||
22 | |||
23 | #include <Ecore.h> | ||
24 | #include <Ecore_Evas.h> | ||
25 | #include <stdio.h> | ||
26 | #include <errno.h> | ||
27 | |||
28 | #define WIDTH (320) | ||
29 | #define HEIGHT (240) | ||
30 | |||
31 | static const char *img_path = PACKAGE_EXAMPLES_DIR "/enlightenment.png"; | ||
32 | static const char *commands = \ | ||
33 | "commands are:\n" | ||
34 | "\tp - change proxy image's source\n" | ||
35 | "\ts - print noise image's stride value\n" | ||
36 | "\ta - save noise image to disk (/tmp dir)\n" | ||
37 | "\th - print help\n"; | ||
38 | |||
39 | const char *file_path = "/tmp/evas-images2-example.png"; | ||
40 | const char *quality_str = "quality=100"; | ||
41 | |||
42 | struct test_data | ||
43 | { | ||
44 | Ecore_Evas *ee; | ||
45 | Evas *evas; | ||
46 | Evas_Object *logo, *noise_img, *proxy_img, *bg; | ||
47 | }; | ||
48 | |||
49 | static struct test_data d = {0}; | ||
50 | |||
51 | static void | ||
52 | _on_preloaded(void *data __UNUSED__, | ||
53 | Evas *e __UNUSED__, | ||
54 | Evas_Object *obj __UNUSED__, | ||
55 | void *event_info __UNUSED__) | ||
56 | { | ||
57 | fprintf(stdout, "Image has been pre-loaded!\n"); | ||
58 | } | ||
59 | |||
60 | static void | ||
61 | _on_destroy(Ecore_Evas *ee __UNUSED__) | ||
62 | { | ||
63 | ecore_main_loop_quit(); | ||
64 | } | ||
65 | |||
66 | /* here just to keep our example's window size and background image's | ||
67 | * size in synchrony */ | ||
68 | static void | ||
69 | _canvas_resize_cb(Ecore_Evas *ee) | ||
70 | { | ||
71 | int w, h; | ||
72 | |||
73 | ecore_evas_geometry_get(ee, NULL, NULL, &w, &h); | ||
74 | evas_object_resize(d.bg, w, h); | ||
75 | } | ||
76 | |||
77 | static void | ||
78 | _on_keydown(void *data __UNUSED__, | ||
79 | Evas *evas __UNUSED__, | ||
80 | Evas_Object *o __UNUSED__, | ||
81 | void *einfo) | ||
82 | { | ||
83 | Evas_Event_Key_Down *ev = einfo; | ||
84 | |||
85 | if (strcmp(ev->keyname, "h") == 0) /* print help */ | ||
86 | { | ||
87 | fprintf(stdout, commands); | ||
88 | return; | ||
89 | } | ||
90 | |||
91 | if (strcmp(ev->keyname, "s") == 0) /* print proxy image' stride value */ | ||
92 | { | ||
93 | int stride = evas_object_image_stride_get(d.noise_img); | ||
94 | |||
95 | fprintf(stdout, "Image has row stride value of %d, which accounts" | ||
96 | " for %d pixels\n", stride, stride / 4); | ||
97 | |||
98 | return; | ||
99 | } | ||
100 | |||
101 | if (strcmp(ev->keyname, "p") == 0) /* change proxy's source */ | ||
102 | { | ||
103 | Evas_Object *source = evas_object_image_source_get(d.proxy_img); | ||
104 | |||
105 | if (source == d.logo) source = d.noise_img; | ||
106 | else source = d.logo; | ||
107 | |||
108 | evas_object_image_source_set(d.proxy_img, source); | ||
109 | |||
110 | fprintf(stdout, "Proxy image's source changed\n"); | ||
111 | |||
112 | return; | ||
113 | } | ||
114 | |||
115 | if (strcmp(ev->keyname, "a") == 0) /* save noise image to disk */ | ||
116 | { | ||
117 | if (!evas_object_image_save(d.noise_img, file_path, NULL, quality_str)) | ||
118 | fprintf(stderr, "Cannot save image to '%s' (flags '%s')\n", | ||
119 | file_path, quality_str); | ||
120 | else | ||
121 | fprintf(stdout, "Image saved to '%s' (flags '%s'), check it out with " | ||
122 | "an image viewer\n", file_path, quality_str); | ||
123 | |||
124 | return; | ||
125 | } | ||
126 | } | ||
127 | |||
128 | int | ||
129 | main(void) | ||
130 | { | ||
131 | unsigned int i; | ||
132 | unsigned int pixels[(WIDTH / 4) * (HEIGHT / 4)]; | ||
133 | |||
134 | srand(time(NULL)); | ||
135 | |||
136 | if (!ecore_evas_init()) | ||
137 | return EXIT_FAILURE; | ||
138 | |||
139 | /* this will give you a window with an Evas canvas under the first | ||
140 | * engine available */ | ||
141 | d.ee = ecore_evas_new(NULL, 10, 10, WIDTH, HEIGHT, NULL); | ||
142 | if (!d.ee) | ||
143 | goto error; | ||
144 | |||
145 | ecore_evas_callback_destroy_set(d.ee, _on_destroy); | ||
146 | ecore_evas_callback_resize_set(d.ee, _canvas_resize_cb); | ||
147 | ecore_evas_show(d.ee); | ||
148 | |||
149 | /* the canvas pointer, de facto */ | ||
150 | d.evas = ecore_evas_get(d.ee); | ||
151 | |||
152 | d.bg = evas_object_rectangle_add(d.evas); | ||
153 | evas_object_color_set(d.bg, 255, 255, 255, 255); /* white bg */ | ||
154 | evas_object_move(d.bg, 0, 0); /* at canvas' origin */ | ||
155 | evas_object_resize(d.bg, WIDTH, HEIGHT); /* covers full canvas */ | ||
156 | evas_object_show(d.bg); | ||
157 | |||
158 | evas_object_focus_set(d.bg, EINA_TRUE); | ||
159 | evas_object_event_callback_add( | ||
160 | d.bg, EVAS_CALLBACK_KEY_DOWN, _on_keydown, NULL); | ||
161 | |||
162 | d.logo = evas_object_image_filled_add(d.evas); | ||
163 | |||
164 | evas_object_event_callback_add( | ||
165 | d.logo, EVAS_CALLBACK_IMAGE_PRELOADED, _on_preloaded, NULL); | ||
166 | evas_object_image_preload(d.logo, EINA_TRUE); | ||
167 | |||
168 | evas_object_image_file_set(d.logo, img_path, NULL); | ||
169 | evas_object_resize(d.logo, WIDTH / 2, HEIGHT / 2); | ||
170 | evas_object_show(d.logo); | ||
171 | |||
172 | /* creating noise image */ | ||
173 | for (i = 0; i < sizeof(pixels) / sizeof(pixels[0]); i++) | ||
174 | pixels[i] = rand(); | ||
175 | |||
176 | d.noise_img = evas_object_image_add(d.evas); | ||
177 | evas_object_image_size_set(d.noise_img, WIDTH / 4, HEIGHT / 4); | ||
178 | evas_object_image_data_set(d.noise_img, pixels); | ||
179 | evas_object_image_filled_set(d.noise_img, EINA_TRUE); | ||
180 | evas_object_move(d.noise_img, (WIDTH * 3) / 4, 0); | ||
181 | evas_object_resize(d.noise_img, WIDTH / 4, HEIGHT / 4); | ||
182 | evas_object_show(d.noise_img); | ||
183 | fprintf(stdout, "Creating noise image with size %d, %d\n", | ||
184 | WIDTH / 4, HEIGHT / 4); | ||
185 | |||
186 | d.proxy_img = evas_object_image_filled_add(d.evas); | ||
187 | evas_object_image_source_set(d.proxy_img, d.logo); | ||
188 | evas_object_move(d.proxy_img, WIDTH / 4, HEIGHT / 2); | ||
189 | evas_object_resize(d.proxy_img, WIDTH / 2, HEIGHT / 2); | ||
190 | evas_object_show(d.proxy_img); | ||
191 | |||
192 | fprintf(stdout, commands); | ||
193 | ecore_main_loop_begin(); | ||
194 | |||
195 | ecore_evas_free(d.ee); | ||
196 | ecore_evas_shutdown(); | ||
197 | return 0; | ||
198 | |||
199 | error: | ||
200 | fprintf(stderr, "you got to have at least one evas engine built and linked" | ||
201 | " up to ecore-evas for this example to run properly.\n"); | ||
202 | ecore_evas_shutdown(); | ||
203 | return -1; | ||
204 | } | ||