From 1aed64f2697321a0558cfd9a04183f11781e5ae5 Mon Sep 17 00:00:00 2001
From: Shinwoo Kim <cinoo.kim@samsung.com>
Date: Thu, 2 May 2019 06:57:28 +0000
Subject: [PATCH] gfx_filter: add an example

Add an example using efl_gfx_filter_program_set with text and image object.

Reviewed-by: Marcel Hollerbach <mail@marcel-hollerbach.de>
Differential Revision: https://phab.enlightenment.org/D8719
---
 src/examples/elementary/filter_example.c | 129 +++++++++++++++++++++++
 src/examples/elementary/meson.build      |   1 +
 2 files changed, 130 insertions(+)
 create mode 100644 src/examples/elementary/filter_example.c

diff --git a/src/examples/elementary/filter_example.c b/src/examples/elementary/filter_example.c
new file mode 100644
index 0000000000..cc05b7d36f
--- /dev/null
+++ b/src/examples/elementary/filter_example.c
@@ -0,0 +1,129 @@
+/**
+ * gcc -g filter_example.c -o filter_example `pkg-config --cflags --libs elementary`
+ */
+#define EFL_BETA_API_SUPPORT 1 
+#include <Elementary.h>
+
+typedef struct _Filter
+{
+   const char *name;
+   const char *code;
+} Filter;
+
+static Filter filters[] = {
+   { "no", NULL },
+   { "blend",
+     "blend { color = '#fff8' }" },
+   { "blur",
+     "blur { 15 }" },
+   { "grow",
+     "a = buffer { 'rgba' }\n"
+     "blend { dst = a }\n"
+     "grow { 6, src = a }" },
+   { "curve",
+     "a = buffer ('alpha')\n"
+     "blur ({ 4, dst = a })\n"
+     "p = {}\n"
+     "p[0] = 0\n"
+     "p[20] = 0\n"
+     "p[60] = 255\n"
+     "p[160] = 255\n"
+     "p[200] = 0\n"
+     "p[255] = 0\n"
+     "curve ({ points = p, src = a, dst = a })\n"
+     "blend ({ src = a, color = 'white' })\n" },
+   { "fill",
+     "fill { color = 'darkblue' }" },
+   { "mask",
+     "a = buffer ('alpha')\n"
+     "blur ({ 6, dst = a })\n"
+     "p = {}\n"
+     "p[0] = 255\n"
+     "p[128] = 255\n"
+     "p[255] = 0\n"
+     "curve ({ points = p, src = a, dst = a })\n"
+     "blend ({ color = 'black' })\n"
+     "mask ({ mask = a, color = 'cyan' })" },
+   { "bump",
+     "a = buffer { 'alpha' }\n"
+     "grow { 5, dst = a }\n"
+     "blur { 6, src = a , dst = a }\n"
+     "bump { map = a, color = '#f60', specular = 1, compensate = true }" },
+   { "trans",
+     "t = buffer ('alpha')\n"
+     "transform ({ oy = 20, dst = t })\n"
+     "blend ({ src = t, color = '#fff8' })\n"
+     "blend ({ color = 'white' })" },
+};
+
+EAPI_MAIN int
+elm_main(int argc EINA_UNUSED, char **argv EINA_UNUSED)
+{
+   Filter *f;
+   unsigned int i;
+   char buf[PATH_MAX];
+   Eo *win, *scroller, *hbox, *box, *text, *img;
+
+   elm_policy_set(ELM_POLICY_QUIT, ELM_POLICY_QUIT_LAST_WINDOW_CLOSED);
+   elm_app_info_set(elm_main, "elementary", "images");
+
+   win = elm_win_util_standard_add("Gfx Filter Test", "Gfx Filter Test");
+   elm_win_autodel_set(win, EINA_TRUE);
+
+   scroller = elm_scroller_add(win);
+   evas_object_size_hint_weight_set(scroller, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
+   elm_win_resize_object_add(win, scroller);
+   evas_object_show(scroller);
+
+   hbox = elm_box_add(win);
+   elm_box_horizontal_set(hbox, EINA_TRUE);
+   evas_object_size_hint_weight_set(hbox, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
+   elm_object_content_set(scroller, hbox);
+   evas_object_show(hbox);
+
+   box = elm_box_add(win);
+   evas_object_size_hint_weight_set(box, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
+   elm_box_pack_end(hbox, box);
+   evas_object_show(box);
+
+   for (i = 0; i < EINA_C_ARRAY_LENGTH(filters); i++)
+     {
+        f = &filters[i];
+        text = evas_object_text_add(evas_object_evas_get(win));
+        evas_object_size_hint_align_set(text, 0, EVAS_HINT_FILL);
+        evas_object_size_hint_min_set(text, 100, 100);
+        evas_object_text_font_set(text, "Sans:style=Bold", 50);
+        evas_object_text_text_set(text, f->name);
+        elm_box_pack_end(box, text);
+        evas_object_show(text);
+
+        efl_gfx_filter_program_set(text, f->code, f->name);
+     }
+
+   box = elm_box_add(win);
+   evas_object_size_hint_weight_set(box, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
+   elm_box_pack_end(hbox, box);
+   evas_object_show(box);
+
+   snprintf(buf, sizeof(buf), "%s/images/logo.png", elm_app_data_dir_get());
+   for (i = 0; i < EINA_C_ARRAY_LENGTH(filters); i++)
+     {
+        f = &filters[i];
+        img = evas_object_image_filled_add(evas_object_evas_get(win));
+        evas_object_size_hint_align_set(img, 0, EVAS_HINT_FILL);
+        evas_object_image_file_set(img, buf, 0);
+        evas_object_size_hint_min_set(img, 100, 100);
+        elm_box_pack_end(box, img);
+        evas_object_show(img);
+
+        efl_gfx_filter_program_set(img, f->code, f->name);
+     }
+
+   evas_object_resize(win, 400, 400);
+   evas_object_show(win);
+
+   elm_run();
+
+   return 0;
+}
+ELM_MAIN()
diff --git a/src/examples/elementary/meson.build b/src/examples/elementary/meson.build
index ac462ff1f7..5286fb80ff 100644
--- a/src/examples/elementary/meson.build
+++ b/src/examples/elementary/meson.build
@@ -30,6 +30,7 @@ examples = [
   'fileselector_example',
   'fileviewlist',
   'filemvc',
+  'filter_example',
   'flip_example_01',
   'flipselector_example',
   'frame_example_01',