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path: root/src/tests/evas/evas_test_filters.c
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/* Unit test cases for the filters submodule.
 * For now, limited to Evas_Object_Text, but I prefer to separate these
 * functions from the core text object.
 */

#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

#include <stdio.h>

#include "evas_suite.h"
#include "Evas.h"
#include "Ecore_Evas.h"
#include "../../lib/evas/include/evas_filter.h"

#if !defined(EFL_EO_API_SUPPORT) || !defined(EFL_BETA_API_SUPPORT)
# define BUILD_FILTER_TESTS 0
#else
# define BUILD_FILTER_TESTS 1
#endif

#if BUILD_FILTER_TESTS

#define TEST_FONT_NAME "DejaVuSans,UnDotum"
#define TEST_FONT_SOURCE TESTS_SRC_DIR "/TestFont.eet"

#define START_FILTER_TEST() \
   Ecore_Evas *ee; Evas *evas; \
   Evas_Object *to; \
   evas_init(); \
   ecore_evas_init(); \
   ee = ecore_evas_buffer_new(1, 1); \
   ecore_evas_show(ee); \
   ecore_evas_manual_render_set(ee, EINA_TRUE); \
   evas = ecore_evas_get(ee); \
   evas_font_hinting_set(evas, EVAS_FONT_HINTING_AUTO); \
   to = evas_object_text_add(evas); \
   evas_object_text_font_set(to, TEST_FONT_NAME, 20); \
   evas_object_text_text_set(to, "Tests"); \
   evas_object_show(to); \
   evas_object_text_font_source_set(to, TEST_FONT_SOURCE); \
   do {} while (0)

#define END_FILTER_TEST() \
   evas_object_del(to); \
   ecore_evas_free(ee); \
   ecore_evas_shutdown(); \
   evas_shutdown(); \
   do {} while (0)

#ifdef LITTLE_ENDIAN
#define ALPHA 3
#define RGB0 0
#define RGB3 3
#define RED 2
#define GREEN 1
#define BLUE 0
#else
#define ALPHA 0
#define RGB0 1
#define RGB3 4
#define RED 0
#define GREEN 1
#define BLUE 2
#endif


START_TEST(evas_filter_parser)
{
   Evas_Filter_Program *pgm;

#define CHECK_FILTER(_a, _v) do { \
   pgm = evas_filter_program_new("evas_suite"); \
   fail_if(evas_filter_program_parse(pgm, _a) != _v); \
   evas_filter_program_del(pgm); \
   } while (0)
#define CHKGOOD(_a) CHECK_FILTER(_a, EINA_TRUE)
#define CHKBAAD(_a) CHECK_FILTER(_a, EINA_FALSE)

   // Basic syntax errors
   fail_if(evas_filter_program_parse(NULL, "blend();"));
   CHKBAAD(NULL);
   CHKBAAD("");
   CHKBAAD("       \t    \n    ");
   CHKBAAD("blend");
   CHKBAAD("blend()");
   CHKBAAD("blend;");

   // Known & unknown instructions + some syntax errors
   CHKGOOD("blend();");
   CHKBAAD("blend()\nblend();");
   CHKBAAD("blend(blend());");
   CHKGOOD("blend(); blend();");
   CHKGOOD("buffer:a;blend();");
   CHKGOOD("buffer:a();blend();");
   CHKGOOD("buffer:a(alpha);blend();");
   CHKGOOD("buffer:a(rgba);blend();");
   CHKBAAD("buffer:a(BAAD);blend();");
   CHKGOOD("buffer:a(src=partname);blend();");
   CHKBAAD("buffer a(alpha);blend();");
   CHKGOOD("blend();blur();fill();");
   CHKGOOD("grow(10);");
   CHKGOOD("curve(0:0 - 255:255);");
   CHKGOOD("buffer:a(alpha);mask(a);");
   CHKGOOD("buffer:a(rgba);mask(a);");
   CHKGOOD("buffer:a(rgba);bump(a);");
   CHKGOOD("buffer:a(rgba);displace(a);");
   CHKGOOD("transform(output);");
   CHKBAAD("unknown_command();");
   CHKBAAD("blend(unknown_buffer);");
   CHKGOOD("//comment\nblend();");
   CHKBAAD("blend(); /* unterminated comment section");
   CHKGOOD("blend(/* we want yellow */ color = yellow);");
   CHKGOOD("/* blend ();\n this is still a comment\n*/\n blend();");
   CHKBAAD("blend(ox = 1/2);");
   CHKBAAD("blend();!@#$%^&*");
   CHKBAAD("blend(invalid=hello);");
   CHKBAAD("buffer:a(alpha);buffer:a(rgba);blend();");
   CHKBAAD("buffer:a(alpha,src=partname);");
   CHKGOOD("padding_set(0);blend();");
   CHKGOOD("padding_set(l=1,r=2,t=3,b=4);blend();");

   // Case sensitivity
   CHKGOOD("BLEND();");
   CHKGOOD("Blend();");
   CHKGOOD("bLeNd();");
   CHKGOOD("buffer : lowercase; blend (lowercase);");
   CHKGOOD("buffer : UPPERCASE; blend (UPPERCASE);");
   CHKBAAD("buffer : CamelCase; blend (cAMELcASE);");

   // Full sequential arguments (default values)
   CHKGOOD("blend(input, output, 0, 0, color = white, fillmode = none);");
   CHKGOOD("blur(3, -1, default, 0, 0, color = white, src = input, dst = output);");
   CHKGOOD("buffer : m (alpha); "
           "bump(m, 135.0, 45.0, 8.0, 0.0, color = white, compensate = true, "
           "src = input, dst = output, black = black, white = white, fillmode = repeat);");
   CHKGOOD("curve(0:0 - 255:255, linear, rgb, src = input, dst = output);");
   CHKGOOD("curve(128:0 - 0:0 - 255:255, linear, rgb, src = input, dst = output);"); // invalid
   CHKGOOD("buffer:a(rgba);blend(dst=a);curve(0:0-255:255,src=a,channel=r);");
   CHKGOOD("buffer:a(rgba);blend(dst=a);curve(0:128-255:128,src=a,channel=g);");
   CHKGOOD("buffer:a(rgba);blend(dst=a);curve(0:255-255:0,src=a,channel=b,interpolation=none);");
   CHKGOOD("buffer : m (rgba); "
           "displace(m, 10, default, src = input, dst = output, fillmode = repeat);");
   CHKGOOD("fill(output, transparent, 0, 0, 0, 0);");
   CHKGOOD("grow(0, smooth = yes, src = input, dst = output);");
   CHKGOOD("buffer : m (alpha); "
           "mask(m, src = input, dst = output, color = white, fillmode = none);");
   CHKGOOD("buffer : m (alpha); "
           "transform(m, op = vflip, src = input, oy = 0);");

   // All colors
   static const char *colors [] = {
      "white",
      "black",
      "red",
      "green",
      "blue",
      "darkblue",
      "yellow",
      "magenta",
      "cyan",
      "orange",
      "purple",
      "brown",
      "maroon",
      "lime",
      "gray",
      "grey",
      "silver",
      "olive",
      "invisible",
      "transparent",
      "#ABC",
      "#ABCF",
      "#AABBCC",
      "#AABBCCFF",
      "WHITE",
      "White"
   };

   static const char *colors_bad[] = {
      "newcolor",
      "ABC",
      "#ZZZ",
      "#-10"
   };

   for (size_t c = 0; c < sizeof(colors) / sizeof(colors[0]); c++)
     {
        char buf[64];
        sprintf(buf, "blend(color = %s);", colors[c]);
        CHKGOOD(buf);
     }

   for (size_t c = 0; c < sizeof(colors_bad) / sizeof(colors_bad[0]); c++)
     {
        char buf[64];
        sprintf(buf, "blend(color = %s);", colors_bad[c]);
        CHKBAAD(buf);
     }

   // All booleans
   static const char *booleans[] = {
      "1", "0",
      "yes", "no",
      "on", "off",
      "enable", "disable",
      "enabled", "disabled",
      "true", "false",
      "YES", "Yes"
   };

   static const char *booleans_bad[] = {
      "o", "oui", "10"
   };

   for (size_t c = 0; c < sizeof(booleans) / sizeof(booleans[0]); c++)
     {
        char buf[64];
        sprintf(buf, "grow(10, smooth = %s);", booleans[c]);
        CHKGOOD(buf);
     }

   for (size_t c = 0; c < sizeof(booleans_bad) / sizeof(booleans_bad[0]); c++)
     {
        char buf[64];
        sprintf(buf, "grow(10, smooth = %s);", booleans_bad[c]);
        CHKBAAD(buf);
     }

   // fillmodes are parsed when converting from instructions to commands
}
END_TEST

struct Filter_Test_Case {
   int l, r, t, b;
   const char *code;
   const char *source;
};

/*
 * The following test case are tailored to cover as much code as possible in
 * evas/filters. This is a bit artificial, but at least we'll verify that all
 * filters produce something and not garbage data.
 *
 * NOTE: If the filters fail to link (program_use()), then Evas_Object_Text
 * will fallback to normal rendering. As a consequence, the pixels will look
 * fine, and there won't be an error.
 */
static struct Filter_Test_Case _test_cases[] = {
   // Single filters. Blend can be used to ensure all filters are valid.
   { 0, 0, 0, 0, "blend();", NULL },
   { 7, 0, 11, 0, "blend(ox = -7, oy = -11);", NULL },
   { 0, 7, 0, 11, "blend(ox = 7, oy = 11);", NULL },
   { 0, 0, 0, 0, "buffer:a(rgba);buffer:b(alpha);blend(dst=a);blend(src=a,dst=b);blend(b);", NULL },

   { 5, 5, 7, 7, "blur(rx = 5, ry = 7);", NULL },
   { 0, 0, 5, 5, "blur(rx = 0, ry = 5, type = box);", NULL },
   { 0, 0, 5, 5, "buffer : a (rgba); blend(dst = a); blur(src = a,rx = 0, ry = 5, type = box);", NULL },
   { 5, 5, 0, 0, "blur(rx = 5, ry = 0, type = gaussian);", NULL },
   { 5, 15, 7, 0, "blur(rx = 5, ry = 0, ox = 10, oy = -7, type = default);", NULL },

   { 5, 5, 5, 5, "grow(5);", NULL },

   { 0, 0, 0, 0, "buffer:a(alpha);blend(dst=a);curve(0:0-255:255,src=a,dst=a);blend(a);", NULL },
   { 0, 0, 0, 0, "buffer:a(alpha);blend(dst=a);curve(0:0-255:255,dst=a);blend(a);", NULL },
   { 0, 0, 0, 0, "buffer:a(rgba);blend(dst=a);curve(0:0-255:255,src=a,channel=r);", NULL },
   { 0, 0, 0, 0, "buffer:a(rgba);blend(dst=a);curve(0:128-128:0,src=a,channel=rgb,interpolation=none);", NULL },

   { 0, 0, 0, 0, "fill(color=red);", NULL },

   { 0, 0, 0, 0, "buffer:a(alpha);blend(dst=a);mask(a);", NULL },
   { 0, 0, 0, 0, "buffer:a(alpha);buffer:b(alpha);blend(dst=a);mask(a,dst=b);blend(b);", NULL },
   { 0, 0, 0, 0, "buffer:a(rgba);blend(dst=a);mask(a);", NULL },
   { 0, 0, 0, 0, "buffer:a(rgba);blend(dst=a);mask(mask=input,src=a);", NULL },
   { 0, 0, 0, 0, "buffer:a(rgba);buffer:b(rgba);blend(dst=b,color=red);blend(dst=a);mask(a,src=b);", NULL },

   // Note: Alpha bump is not tested. Its render quality must be improved first.
   { 0, 0, 0, 0, "buffer:a(alpha);blend(dst=a);bump(a);", NULL },
   { 0, 0, 0, 0, "buffer:a(alpha);blend(dst=a);bump(a,compensate=yes,specular=10.0);", NULL },

   { 7, 7, 7, 7, "buffer:a(alpha);buffer:b(rgba);blend(dst=b,color=#330);displace(map=b,src=input,dst=a,intensity=7);blend(a);", NULL },
   { 7, 7, 7, 7, "buffer:a(alpha);buffer:b(rgba);blend(dst=b,color=#330);blend(dst=a);displace(map=b,src=a,intensity=7);", NULL },
   { 7, 7, 7, 7, "buffer:a(rgba);buffer:b(rgba);blend(dst=b,color=#330);blend(dst=a);displace(map=b,src=a,intensity=7);", NULL },
   { 7, 7, 7, 7, "buffer:a(rgba);buffer:b(rgba);blend(dst=b,color=#330);blend(dst=a);displace(map=b,src=a,intensity=7,flags=default);", NULL },
   { 7, 7, 7, 7, "buffer:a(rgba);buffer:b(rgba);blend(dst=b,color=#330);blend(dst=a);displace(map=b,src=a,intensity=7,flags=nearest);", NULL },
   { 7, 7, 7, 7, "buffer:a(rgba);buffer:b(rgba);blend(dst=b,color=#330);blend(dst=a);displace(map=b,src=a,intensity=7,flags=smooth);", NULL },
   { 7, 7, 7, 7, "buffer:a(rgba);buffer:b(rgba);blend(dst=b,color=#330);blend(dst=a);displace(map=b,src=a,intensity=7,flags=nearest_stretch);", NULL },
   { 7, 7, 7, 7, "buffer:a(rgba);buffer:b(rgba);blend(dst=b,color=#330);blend(dst=a);displace(map=b,src=a,intensity=7,flags=smooth_stretch);", NULL },

   { 0, 0, 0, 40, "buffer:a(alpha);transform(a,vflip,oy=20);blend(src=a);", NULL },
   { 0, 0, 40, 0, "buffer:a(alpha);transform(a,vflip,oy=-20);blend(src=a);", NULL },
   { 0, 0, 0, 40, "buffer:a(alpha);blend(dst=a);transform(a,vflip,oy=20,src=a);blend(src=a);", NULL },

   // Filter combos. TODO: Add some more tricky cases :)
   { 3, 5, 7, 11, "blend(ox = -3, oy = 11); blend(ox = 5, oy = -7);", NULL },
   { 15, 15, 15, 15, "buffer:a(rgba);grow(10,dst=a);blur(5,src=a);", NULL },
   { 10, 15, 10, 17, "buffer:a(alpha);blend(dst=a,ox=5,oy=7);blur(10,src=a);blend(ox=-6,oy=-9);", NULL },
   { 5, 5, 5, 5, "buffer:a(alpha);blur(5,dst=a);bump(a,azimuth=45.0,color=yellow);", NULL },

   // Proxy tests (RECT as a proxy object)
   { 0, 0, 0, 0, "buffer:m(src=rect);mask(m,fillmode=none);", "rect" },
   { 0, 0, 0, 0, "buffer:m(src=rect);mask(m,fillmode=repeat_x_stretch_y);", "rect" },
   { 0, 0, 0, 0, "buffer:m(src=rect);mask(m,fillmode=repeat);", "rect" },
   { 0, 0, 0, 0, "buffer:m(src=rect);mask(m,fillmode=stretch);", "rect" },
   { 0, 0, 0, 0, "buffer:m(src=rect);buffer:b(rgba);blend(m,dst=b,fillmode=repeat_x_stretch_y);blend();", "rect" },

   // Padding_set
   { 11, 22, 33, 44, "padding_set(11,22,33,44);blend();"}
};

static const int _test_cases_count = sizeof(_test_cases) / sizeof(_test_cases[0]);

START_TEST(evas_filter_text_padding_test)
{
   START_FILTER_TEST();
   Evas_Coord x, y, w, h, W, H;
   int l, r, t, b;

   evas_object_geometry_get(to, &x, &y, &w, &h);
   printf("Geometry: %dx%d+%d,%d\n", w, h, x, y);

   for (int k = 0; k < _test_cases_count; k++)
     {
        struct Filter_Test_Case *tc = &(_test_cases[k]);
        l = r = t = b = 0;

        // Don't test proxy cases here.
        if (tc->source) continue;

        eo_do(to, evas_obj_text_filter_program_set(tc->code));
        evas_object_text_style_pad_get(to, &l, &r, &t, &b);
        evas_object_geometry_get(to, NULL, NULL, &W, &H);
        printf("Case %d: %dx%d for padding %d,%d,%d,%d\n", k, W, H, l, r, t, b);

        if ((l != tc->l) || (r != tc->r) || (t != tc->t) || (b != tc->b))
          fail("Failed on invalid padding with '%s'\n", tc->code);
        if ((W != (tc->l + tc->r + w)) || (H != (tc->t + tc->b + h)))
          fail("Failed on invalid geometry with '%s'\n", tc->code);
     }

   END_FILTER_TEST();
}
END_TEST

/* This will only check that all pixels are valid premultiplied values
 * and that they are not all zero.
 */
static Eina_Bool
_ecore_evas_pixels_check(Ecore_Evas *ee)
{
   const DATA32 *pixels;
   Eina_Bool nonzero = EINA_FALSE;
   int w = 0, h = 0;

   pixels = ecore_evas_buffer_pixels_get(ee);
   if (!pixels) return EINA_FALSE;

   ecore_evas_geometry_get(ee, NULL, NULL, &w, &h);
   if (!w || !h) return EINA_FALSE;

   for (int k = w * h; k; k--, pixels++)
     {
        DATA8 *rgba = (DATA8 *) pixels;

        if (*pixels && (*pixels != 0xFF000000)) nonzero = EINA_TRUE;
        if ((rgba[ALPHA] < rgba[RED])
            || (rgba[ALPHA] < rgba[GREEN])
            || (rgba[ALPHA] < rgba[BLUE]))
          {
             printf("Invalid RGBA values!\n");
             return EINA_FALSE;
          }
     }

   if (!nonzero) printf("All pixels are empty!\n");
   return nonzero;
}

START_TEST(evas_filter_text_render_test)
{
   Evas_Filter_Program *pgm;

   /* FIXME:
    * START_FILTER_TEST should be here instead of in the for loop
    * But there seems to be a problem with ecore_evas_buffer as the second
    * call to pixels_get will return some garbage. Always.
    */

   for (int k = 0; k < _test_cases_count; k++)
     {
        START_FILTER_TEST();

        Evas_Object *rect, *o = NULL;
        Evas_Coord w, h;

        ecore_evas_alpha_set(ee, EINA_TRUE);
        ecore_evas_transparent_set(ee, EINA_TRUE);

        rect = evas_object_rectangle_add(evas);
        evas_object_color_set(rect, 0, 0, 0, 0);
        evas_object_move(rect, 0, 0);
        evas_object_stack_below(rect, to);
        evas_object_show(rect);

        struct Filter_Test_Case *tc = &(_test_cases[k]);
        w = h = 0;

        CHKGOOD(tc->code);
        if (tc->source)
          {
             o = evas_object_rectangle_add(evas);
             evas_object_color_set(o, 0, 255, 0, 255);
             evas_object_move(o, -999, -9999);
             evas_object_resize(o, 10, 10);
             evas_object_show(o);
             eo_do(to,
                   evas_obj_color_set(255, 255, 255, 255),
                   evas_obj_text_filter_source_set(tc->source, o),
                   evas_obj_text_filter_program_set(tc->code));
          }
        else
          {
             eo_do(to,
                   evas_obj_color_set(255, 255, 255, 255),
                   evas_obj_text_filter_program_set(tc->code));
          }

        evas_object_geometry_get(to, NULL, NULL, &w, &h);
        ecore_evas_resize(ee, w, h);
        evas_object_resize(to, w, h);
        evas_object_resize(rect, w, h);

        ecore_evas_manual_render(ee);
        if (!_ecore_evas_pixels_check(ee))
          fail("Render test failed with: [%dx%d] '%s'", w, h, tc->code);

        evas_object_del(o);
        evas_object_del(rect);
        END_FILTER_TEST();
     }

}
END_TEST

#endif // BUILD_FILTER_TESTS

void evas_test_filters(TCase *tc)
{
#if BUILD_FILTER_TESTS
   tcase_add_test(tc, evas_filter_parser);
   tcase_add_test(tc, evas_filter_text_padding_test);
   tcase_add_test(tc, evas_filter_text_render_test);
#else
   (void) tc;
#endif
}