Merge commit '82b3893c2a8df9c1540aa78c0303e0ba85aad84b'

examples/truecolor.rs

@@ -1,38 +1,67 @@
 use std::io::{self, Read, Seek, Write};
 
+use ansistream::{FCDARKGRAY, BCBLACK};
+
 fn flush_stdout<W: Read + Seek>(reader: &mut W) -> io::Result<()> {
     let mut stdout = io::stdout().lock();
     reader.seek(io::SeekFrom::Start(0))?;
     io::copy(reader, &mut stdout)?;
     Ok(())
 }
 
+fn hex2rgb(hex: u32) -> (u16, u16, u16) {
+    let r = (hex >> 16) as u16;
+    let g = ((hex >> 8) & 0xff) as u16;
+    let b = (hex & 0xff) as u16;
+
+    (r, g, b)
+} 
+
 fn main() -> io::Result<()> {
     let mut astream = ansistream::AnsiEscapeStream::new(2000);
 
+    let palettes: [u32; 20] = [
+        0xf1c15d,
+        0x85a746,
+        0x599a70,
+        0xe56a4b,
+        0xeda052,
+        0xb3d9e2,
+        0xb3b4ac,
+        0xfefacb,
+        0x78495d,
+        0x93667a,
+        0x36473d,
+        0x778c63,
+        0xe8df7a,
+        0xe6a91b,
+        0xea9804,
+        0x242623,
+        0x7d603e,
+        0xdfd1a4,
+        0x5e7e4f,
+        0xc74223
+    ];
+
     astream.write_string("Printing a common brazilian color palette:\n\n")?;
 
-    astream.write_text_fcrgb(50, 50, 50, "")?;
-    astream.write_text_bcrgb(139, 60, 60, " #8b3c3c          ")?;
-    writeln!(&mut *astream)?;
-    astream.write_text_bcrgb(189, 90, 92, " #bd5a5c          ")?;
-    writeln!(&mut *astream)?;
-    astream.write_text_bcrgb(64, 80, 103, " #405067          ")?;
-    writeln!(&mut *astream)?;
-    astream.write_text_bcrgb(98, 112, 121, " #627079          ")?;
-    writeln!(&mut *astream)?;
-    astream.write_text_bcrgb(156, 118, 53, " #9c7635          ")?;
-    writeln!(&mut *astream)?;
-    astream.write_text_bcrgb(211, 189, 152, " #d3bd98          ")?;
-    writeln!(&mut *astream)?;
-    astream.write_text_bcrgb(130, 101, 103, " #826567          ")?;
-    writeln!(&mut *astream)?;
-    astream.write_text_bcrgb(169, 139, 139, " #a98b8b          ")?;
-    writeln!(&mut *astream)?;
-    astream.write_text_bcrgb(255, 180, 1, " #ffb401          ")?;
-    writeln!(&mut *astream)?;
-    astream.write_text_bcrgb(255, 217, 115, " #ffd973          ")?;
-    writeln!(&mut *astream)?;
+    for (idx, &c) in palettes.iter().enumerate() {
+        if idx % 5 == 0 {
+            astream.reset_attribute(BCBLACK)?;
+            astream.write_string("\t")?;
+        }
+
+        if idx % 10 == 0 {
+            astream.reset_attribute(BCBLACK)?;
+            writeln!(&mut *astream)?;
+        }
+        astream.write_text_fc(FCDARKGRAY, "")?;
+        let rgb = hex2rgb(c);
+        astream.write_text_bcrgb(rgb.0, rgb.1, rgb.2, "")?;
+        write!(&mut *astream, "   {c:#06x}")?;
+    }
+
+    astream.reset_all_attributes()?;
 
     flush_stdout(&mut *astream)?;
     Ok(())