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Posterize to 8 colors when outer terminal does not support 256 colors

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Fixes #58 github issue.
This commit is contained in:
Keith Winstein
2012-03-16 17:42:36 -04:00
parent bdb0ecc2fd
commit 170bc8366a
6 changed files with 96 additions and 7 deletions
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src/terminal/terminaldisplayinit.cc
+12 -5
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@@ -29,7 +29,7 @@
using namespace Terminal;
Display::Display( bool use_environment )
: has_ech( true ), has_bce( true )
: has_ech( true ), has_bce( true ), posterize_colors( false )
{
if ( use_environment ) {
int errret = -2;
@@ -57,8 +57,7 @@ Display::Display( bool use_environment )
char *val = tigetstr( ech_name );
if ( val == (char *)-1 ) {
throw std::string( "Invalid terminfo string capability " ) + ech_name;
}
if ( val == 0 ) {
} else if ( val == 0 ) {
has_ech = false;
}
@@ -67,9 +66,17 @@ Display::Display( bool use_environment )
int bce_val = tigetflag( bce_name );
if ( bce_val == -1 ) {
throw std::string( "Invalid terminfo boolean capability " ) + bce_name;
}
if ( bce_val == 0 ) {
} else if ( bce_val == 0 ) {
has_bce = false;
}
/* check colors */
char colors_name[] = "colors";
int color_val = tigetnum( colors_name );
if ( color_val == -2 ) {
throw std::string( "Invalid terminfo numeric capability " ) + colors_name;
} else if ( color_val < 256 ) {
posterize_colors = true;
}
}
}