Mercurial > hg > tilerswift
changeset 48:fa5b36acf03f
ColourButton: label each colour with its hex index
The luminance is computed via the formula found here:
https://en.wikipedia.org/wiki/Relative_luminance
| author | Jordi Gutiérrez Hermoso <jordigh@octave.org> |
|---|---|
| date | Wed, 04 Sep 2019 10:14:04 -0400 |
| parents | 493bfe6b2b90 |
| children | 5ca986354475 |
| files | tilerswift |
| diffstat | 1 files changed, 8 insertions(+), 1 deletions(-) [+] |
line wrap: on
line diff
--- a/tilerswift +++ b/tilerswift @@ -226,7 +226,14 @@ def set_colour(self, colour_idx): self.colour_idx = colour_idx - self.setStyleSheet("background-color: %s;" % NES_PALETTE[colour_idx]) + self.setText(f"{colour_idx:0{2}X}") + + bgcolour = NES_PALETTE[colour_idx] + qt_colour = QtGui.QColor(bgcolour) + [r, g, b] = qt_colour.red(), qt_colour.green(), qt_colour.blue() + luminance = (0.2126*r + 0.7152*g + 0.0722*b)/256 + textcolour = 'white' if luminance < 0.5 else 'black' + self.setStyleSheet(f"color: {textcolour}; background-color: {bgcolour}") class PaletteButton(ColourButton):