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| author | Christoph M. Becker <cmbecker69@gmx.de> | 2017-08-25 12:13:19 +0200 |
|---|---|---|
| committer | Christoph M. Becker <cmbecker69@gmx.de> | 2017-08-25 12:13:19 +0200 |
| commit | 1c090dc01e3c9957f2ac051b6299d44a3379c40f (patch) | |
| tree | 477ea1b9e7e7dc5812a91989a0628ffa9654963c /src/webpng.c | |
| parent | b7977b574dbbb1ba7d3e109e55ab08b7d76fb42a (diff) | |
| download | libgd-1c090dc01e3c9957f2ac051b6299d44a3379c40f.tar.gz | |
Fix #406: webpng -i removes the transparent color
We have to initialize `trans_col` to the value that guards the call to
`gdImageColorTransparent()`. To avoid confusion, we replace the magic
numbers with a macro.
Diffstat (limited to 'src/webpng.c')
| -rw-r--r-- | src/webpng.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/src/webpng.c b/src/webpng.c index 6faa909..2dff832 100644 --- a/src/webpng.c +++ b/src/webpng.c @@ -26,6 +26,8 @@ /* Bring in the gd library functions */ #include "gd.h" +#define KEEP_TRANS (-100) + static const char argv0[] = "webpng"; static void usage(const char *msg) @@ -74,7 +76,7 @@ main(int argc, char **argv) int interlace = -100; int list_color_table = 0; - int trans_col = -1; + int trans_col = KEEP_TRANS; int report_details = 0; int print_alpha = 0; @@ -251,7 +253,7 @@ main(int argc, char **argv) else if (interlace == 0) gdImageInterlace(im, 0); - if (trans_col != -100) + if (trans_col != KEEP_TRANS) gdImageColorTransparent(im, trans_col); if (use_stdin_stdout) { |