Add dim color support

Add support for the VTE 'dim' flag, with additional support for
custom-themed dim colors. If no color is specified in the config, it
will default to 2/3 the previous (not a spec, but the value other
terminals seem to use).

The actual dimming behavior brings bright colors to normal and regular
colors to the new dim ones. Custom RGB values are not changed, nor are
non-named indexed colors.

1 files changed, 9 insertions, 0 deletions

diff --git a/src/term/cell.rs b/src/term/cell.rs
index 18e03dee..d1c6877b 100644
--- a/src/term/cell.rs
+++ b/src/term/cell.rs
@@ -25,6 +25,8 @@ bitflags! {
         const WRAPLINE          = 0b00010000,
         const WIDE_CHAR         = 0b00100000,
         const WIDE_CHAR_SPACER  = 0b01000000,
+        const DIM               = 0b10000000,
+        const DIM_BOLD          = 0b10000010,
     }
 }
 
@@ -73,14 +75,21 @@ impl LineLength for grid::Row<Cell> {
 }
 
 impl Cell {
+    #[inline]
     pub fn bold(&self) -> bool {
         self.flags.contains(BOLD)
     }
 
+    #[inline]
     pub fn inverse(&self) -> bool {
         self.flags.contains(INVERSE)
     }
 
+    #[inline]
+    pub fn dim(&self) -> bool {
+        self.flags.contains(DIM)
+    }
+
     pub fn new(c: char, fg: Color, bg: Color) -> Cell {
         Cell {
             c: c.into(),