backend: Add haishoku

1 files changed, 36 insertions, 0 deletions

diff --git a/pywal/backends/haishoku.py b/pywal/backends/haishoku.py
new file mode 100644
index 0000000..413c9d7
--- /dev/null
+++ b/pywal/backends/haishoku.py
@@ -0,0 +1,36 @@
+"""
+Generate a colorscheme using Haishoku.
+"""
+import sys
+
+try:
+    from haishoku.haishoku import Haishoku
+
+except ImportError:
+    print("error: Haishoku wasn't found on your system.",
+          "Try another backend. (wal --backend)")
+    sys.exit(1)
+
+from .. import colors
+from .. import util
+
+
+def gen_colors(img):
+    """Generate a colorscheme using Colorz."""
+    palette = Haishoku.getPalette(img)
+    return [util.rgb_to_hex(col[1]) for col in palette]
+
+
+def adjust(cols, light):
+    """Create palette."""
+    cols.sort(key=util.rgb_to_yiq)
+    raw_colors = [*cols, *cols]
+    raw_colors[0] = util.lighten_color(cols[0], 0.40)
+
+    return colors.generic_adjust(raw_colors, light)
+
+
+def get(img, light=False):
+    """Get colorscheme."""
+    cols = gen_colors(img)
+    return adjust(cols, light)