diff options
Diffstat (limited to 'converter/other/pngtopam.c')
| -rw-r--r-- | converter/other/pngtopam.c | 26 |
1 files changed, 16 insertions, 10 deletions
diff --git a/converter/other/pngtopam.c b/converter/other/pngtopam.c index 1023c6c6..3c0f81a5 100644 --- a/converter/other/pngtopam.c +++ b/converter/other/pngtopam.c @@ -22,7 +22,7 @@ #include <math.h> #include <float.h> #include <png.h> -/* Becaues of a design error in png.h, you must not #include <setjmp.h> before +/* Because of a design error in png.h, you must not #include <setjmp.h> before <png.h>. If you do, png.h won't compile. */ #include <setjmp.h> @@ -668,10 +668,16 @@ dumpPngInfo(struct pngx * const pngxP) { background.blue); } - if (pngx_chunkIsPresent(pngxP, PNG_INFO_tRNS)) - pm_message("tRNS chunk (transparency): %u entries", - pngx_trns(pngxP).numTrans); - else + if (pngx_chunkIsPresent(pngxP, PNG_INFO_tRNS)) { + struct pngx_trns const trns = pngx_trns(pngxP); + + pm_message("tRNS chunk (transparency):"); + pm_message(" %u palette entries", trns.numTrans); + pm_message(" transparent color = (%u,%u,%u)", + trns.transColor.red, + trns.transColor.green, + trns.transColor.blue); + } else pm_message("tRNS chunk (transparency): not present"); if (pngx_chunkIsPresent(pngxP, PNG_INFO_gAMA)) @@ -868,17 +874,17 @@ paletteHasPartialTransparency(struct pngx * const pngxP) { if (pngx_chunkIsPresent(pngxP, PNG_INFO_tRNS)) { struct pngx_trns const trans = pngx_trns(pngxP); - bool foundGray; + bool foundPartial; unsigned int i; - for (i = 0, foundGray = FALSE; - i < trans.numTrans && !foundGray; + for (i = 0, foundPartial = FALSE; + i < trans.numTrans && !foundPartial; ++i) { if (trans.trans[i] != 0 && trans.trans[i] != pngxP->maxval) { - foundGray = TRUE; + foundPartial = TRUE; } } - retval = foundGray; + retval = foundPartial; } else retval = FALSE; } else |