From: Dietmar Maurer <dietmar@proxmox.com>
Date: Thu, 10 Nov 2016 15:39:35 +0000 (+0100)
Subject: png-verify.pl: use Unit PixelsPerCentimeter
X-Git-Url: https://git.proxmox.com/?p=pve-docs.git;a=commitdiff_plain;h=9798ad65e724b5c4845964ed915c3af72a50ef25

png-verify.pl: use Unit PixelsPerCentimeter
---

diff --git a/png-cleanup.pl b/png-cleanup.pl
index be82c59..49c7cb4 100755
--- a/png-cleanup.pl
+++ b/png-cleanup.pl
@@ -12,11 +12,12 @@ my $outfile = shift ||
 # use the following to verify image attributes
 # identify -verbose <filename>
 
-# set DPI to 146, so that we can display 1024 pixels (page width)
+# set PixelsPerCentimeter to 58, so that we can display 1024 
+# pixels (page width)
 
-my $dpi = 146;
+my $dpcm = 58;
 
-system("convert -units PixelsPerInch $infile -density $dpi $outfile");
+system("convert -units PixelsPerCentimeter $infile -density $dpcm $outfile");
 
 # identify should return the same value
-# system("identify -units PixelsPerInch -format '%x x %y' $outfile");
+# system("identify -units PixelsPerCentimeter -format '%x x %y' $outfile");
diff --git a/png-verify.pl b/png-verify.pl
index 248f9fb..8eb6611 100755
--- a/png-verify.pl
+++ b/png-verify.pl
@@ -6,11 +6,11 @@ use warnings;
 my $infile = shift ||
     die "no input file specified\n";
 
-my $dpi = 146; # expected
+my $dpcm = 58; # expected
 
-my $tmp = `identify -units PixelsPerInch -format '%x x %y' $infile`;
+my $tmp = `identify -units PixelsPerCentimeter -format '%x x %y' $infile`;
 
-die "got unexpected DPI density '$tmp' (fix with png-cleanup.pl)\n"
-    if $tmp ne "$dpi x $dpi";
+die "got unexpected density '$tmp' (fix with png-cleanup.pl)\n"
+    if $tmp ne "$dpcm x $dpcm";
 
 exit 0;