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Meter: Make compatible with wx3.0 with a local wxColour::GetLuminance

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Signed-off-by: Mart Raudsepp <leio@gentoo.org>
This commit is contained in:
Mart Raudsepp 2021-07-18 13:44:41 +03:00
parent ebad9cc02f
commit 786f21b85c
1 changed files with 12 additions and 2 deletions
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14
src/widgets/Meter.cpp
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@ -471,6 +471,16 @@ void MeterPanel::OnErase(wxEraseEvent & WXUNUSED(event))
// Ignore it to prevent flashing
}
static double GetColourLuminance(wxColour color)
{
#if wxCHECK_VERSION(3, 1, 0)
return color.GetLuminance();
#else
// Standard RGB to YIQ conversion for the luma (Y) part, used also by wx3.1
return (0.299*color.Red() + 0.587*color.Green() + 0.114*color.Blue()) / 255.0;
#endif
}
void MeterPanel::OnPaint(wxPaintEvent & WXUNUSED(event))
{
#if defined(__WXMAC__)
@ -533,13 +543,13 @@ void MeterPanel::OnPaint(wxPaintEvent & WXUNUSED(event))
// Bug #2473 - (Sort of) Hack to make text on meters more
// visible with darker backgrounds. It would be better to have
// different colors entirely and as part of the theme.
if (GetBackgroundColour().GetLuminance() < 0.25)
if (GetColourLuminance(GetBackgroundColour()) < 0.25)
{
green = wxColor(117-100, 215-100, 112-100);
yellow = wxColor(255-100, 255-100, 0);
red = wxColor(255-100, 0, 0);
}
else if (GetBackgroundColour().GetLuminance() < 0.50)
else if (GetColourLuminance(GetBackgroundColour()) < 0.50)
{
green = wxColor(117-50, 215-50, 112-50);
yellow = wxColor(255-50, 255-50, 0);