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#include <stdio.h>
#include <limits.h>
#include "gd.h"
#include "gdtest.h"
static int callback(gdImagePtr im, int src)
{
int r, g, b;
r = gdImageRed(im, src);
g = gdImageGreen(im, src);
b = gdImageBlue(im, src);
if (b & 0xFF) {
return gdImageColorResolve(im, 0x0F & r, 0x0F & g, 0);
} else {
return -1;
}
}
static void run_tests(gdImagePtr im, int *error)
{
int black, \
white, \
cosmic_latte, \
cream, \
ivory, \
magnolia, \
old_lace, \
seashell, \
yellow, \
c, d;
int src[2], dst[2];
int n;
#define COLOR(name, r, g, b) name = gdImageColorAllocateAlpha(im, r, g, b, gdAlphaOpaque)
COLOR(black, 0, 0, 0);
COLOR(white, 0xFF, 0xFF, 0xFF);
COLOR(cosmic_latte, 0xFF, 0xF8, 0xE7);
COLOR(cream, 0xFF, 0xFD, 0xD0);
COLOR(ivory, 0xFF, 0xFF, 0xF0);
COLOR(magnolia, 0xF8, 0xF4, 0xFF);
COLOR(old_lace, 0xFD, 0xF5, 0xE6);
COLOR(seashell, 0xFF, 0xF5, 0xEE);
COLOR(yellow, 0xFF, 0xFF, 0);
#undef COLOR
#define CHECK_VALUE(n, expected) do { \
if (gdTestAssert((n) == (expected)) != 1) { \
gdTestErrorMsg("%d is expected, but %d\n", expected, n);\
*error = -1; \
} \
} while (0)
#define CHECK_PIXEL(x, y, expected) \
do { \
int pix; \
gdImageSetClip(im, 0, 0, 4, 4); \
pix = gdImageGetPixel(im, (x), (y)); \
if (gdTestAssert(pix == (expected)) != 1) { \
gdTestErrorMsg("%d is expected, but %d\n", expected, pix); \
*error = -1; \
} \
} while (0)
c = gdImageColorAllocate(im, 0xFF, 0, 0xFF);
gdImageFilledRectangle(im, 0, 0, 4, 4, white);
gdImageFilledRectangle(im, 0, 0, 3, 3, black);
n = gdImageColorReplace(im, white, c);
CHECK_VALUE(n, 9);
CHECK_PIXEL(0, 0, black);
CHECK_PIXEL(2, 3, black);
CHECK_PIXEL(4, 4, c);
gdImageSetClip(im, 1, 1, 3, 3);
n = gdImageColorReplace(im, black, c);
CHECK_VALUE(n, 9);
CHECK_PIXEL(0, 0, black);
CHECK_PIXEL(2, 3, c);
src[0] = black;
src[1] = c;
dst[0] = c;
dst[1] = white;
gdImageSetClip(im, 0, 0, 4, 4);
n = gdImageColorReplaceArray(im, 2, src, dst);
CHECK_VALUE(n, 25);
CHECK_PIXEL(0, 0, c);
CHECK_PIXEL(2, 3, white);
CHECK_PIXEL(4, 4, white);
n = gdImageColorReplaceArray(im, 0, src, dst);
CHECK_VALUE(n, 0);
n = gdImageColorReplaceArray(im, -1, src, dst);
CHECK_VALUE(n, 0);
n = gdImageColorReplaceArray(im, INT_MAX, src, dst);
CHECK_VALUE(n, -1);
gdImageSetClip(im, 1, 1, 4, 4);
n = gdImageColorReplaceCallback(im, callback);
CHECK_VALUE(n, 16);
CHECK_PIXEL(0, 0, c);
CHECK_PIXEL(0, 4, white);
d = gdImageColorExact(im, 0x0F, 0x0F, 0);
if (gdTestAssert(d > 0) != 1) {
*error = -1;
}
CHECK_PIXEL(2, 3, d);
CHECK_PIXEL(4, 4, d);
#define INITIALIZE_IMAGE() \
gdImageSetClip(im, 0, 0, 4, 4); \
gdImageFilledRectangle(im, 0, 0, 4, 4, black); \
gdImageFilledRectangle(im, 1, 1, 3, 3, white); \
gdImageSetPixel(im, 1, 1, cosmic_latte); \
gdImageSetPixel(im, 1, 2, cream); \
gdImageSetPixel(im, 2, 1, ivory); \
gdImageSetPixel(im, 2, 2, magnolia); \
gdImageSetPixel(im, 3, 1, old_lace); \
gdImageSetPixel(im, 3, 2, seashell)
INITIALIZE_IMAGE();
n = gdImageColorReplaceThreshold(im, white, yellow, 2.0);
CHECK_VALUE(n, 9);
CHECK_PIXEL(0, 0, black);
CHECK_PIXEL(1, 1, yellow);
CHECK_PIXEL(2, 2, yellow);
CHECK_PIXEL(3, 3, yellow);
#undef INITIALIZE_IMAGE
#undef CHECK_VALUE
#undef CHECK_PIXEL
}
int main()
{
gdImagePtr im;
int error = 0;
gdSetErrorMethod(gdSilence);
/* true color */
im = gdImageCreateTrueColor(5, 5);
run_tests(im, &error);
gdImageDestroy(im);
/* palette */
im = gdImageCreate(5, 5);
run_tests(im, &error);
gdImageDestroy(im);
return error;
}
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