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-rw-r--r--Build/source/libs/gd/libgd-src/tests/gdimagecrop/bug00485_auto.c52
1 files changed, 52 insertions, 0 deletions
diff --git a/Build/source/libs/gd/libgd-src/tests/gdimagecrop/bug00485_auto.c b/Build/source/libs/gd/libgd-src/tests/gdimagecrop/bug00485_auto.c
new file mode 100644
index 00000000000..3c0627e49d8
--- /dev/null
+++ b/Build/source/libs/gd/libgd-src/tests/gdimagecrop/bug00485_auto.c
@@ -0,0 +1,52 @@
+/**
+ * Test that gdImageCropAuto() works pixel precise
+ *
+ * We test that a single black pixel anywhere (but the corners) on an 8x8 pixel
+ * image with a white background is auto-cropped to a 1x1 pixel image with a
+ * black pixel.
+ *
+ * See <https://github.com/libgd/libgd/issues/485>
+ */
+
+
+#include "gd.h"
+#include "gdtest.h"
+
+
+gdImagePtr createWhiteImageWithBlackPixelAt(int x, int y)
+{
+ gdImagePtr im = gdImageCreateTrueColor(8, 8);
+ gdImageFilledRectangle(im, 0, 0, 7, 7, 0xffffff);
+ gdImageSetPixel(im, x, y, 0x000000);
+ return im;
+}
+
+
+int main()
+{
+ int x, y, height, width, color;
+ gdImagePtr orig, cropped;
+
+ for (y = 0; y < 8; y++) {
+ for (x = 0; x < 8; x++) {
+ if ((x == 0 && (y == 0 || y == 7)) || (x == 7 && (y == 0 || y == 7))) {
+ continue; // skip the corners
+ }
+ orig = createWhiteImageWithBlackPixelAt(x, y);
+ cropped = gdImageCropAuto(orig, GD_CROP_SIDES);
+ gdTestAssertMsg(cropped != NULL, "Pixel at %d, %d: unexpected NULL crop\n", x, y);
+ if (cropped) {
+ width = gdImageSX(cropped);
+ gdTestAssertMsg(width == 1, "Pixel at %d, %d: unexpected width (%d)\n", x, y, width);
+ height = gdImageSY(cropped);
+ gdTestAssertMsg(height == 1, "Pixel at %d, %d: unexpected height (%d)\n", x, y, height);
+ color = gdImageGetPixel(cropped, 0, 0);
+ gdTestAssertMsg(color == 0x000000, "Pixel at %d, %d: unexpected color (%d)\n", x, y, color);
+ gdImageDestroy(cropped);
+ }
+ gdImageDestroy(orig);
+ }
+ }
+
+ return gdNumFailures();
+}