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Add wxSystemAppearance::AreAppsDark() and IsSystemDark()

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This allows to determine if dark mode is enabled (for the applications
and/or the system UI itself, respectively) system-wide which is useful
now that IsDark() returns false unless MSWEnableDarkMode() is called.

Also document the incompatible change to IsDark().
This commit is contained in:
Vadim Zeitlin 2022-12-26 22:02:11 +00:00
parent ca5cd2f18d
commit 7ce2ba9b0c
6 changed files with 116 additions and 13 deletions
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32
samples/drawing/drawing.cpp
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@ -1676,21 +1676,31 @@ void MyCanvas::DrawSystemColours(wxDC& dc)
wxCoord x(FromDIP(10));
wxRect r(textSize.GetWidth() + x, x, dc.FromDIP(100), lineHeight);
wxString title = "System colours";
dc.DrawText("System colours", x, r.y);
r.y += 2*lineHeight;
const wxSystemAppearance appearance = wxSystemSettings::GetAppearance();
const wxString appearanceName = appearance.GetName();
if ( !appearanceName.empty() )
title += wxString::Format(" for \"%s\"", appearanceName);
if ( appearance.IsDark() )
title += " (using dark system theme)";
dc.DrawText(title, x, r.y);
r.y += 2*lineHeight;
dc.DrawText(wxString::Format("Window background is %s",
appearance.IsUsingDarkBackground() ? "dark"
: "light"),
x, r.y);
r.y += 3*lineHeight;
{
dc.DrawText(wxString::Format("System appearance: %s", appearanceName),
x, r.y);
r.y += lineHeight;
}
auto const showDarkOrLight = [&](const char* what, bool dark)
{
dc.DrawText(wxString::Format("%s: %s", what, dark ? "dark" : "light"),
x, r.y);
r.y += 1.5*lineHeight;
};
showDarkOrLight("System", appearance.IsSystemDark());
showDarkOrLight("App default", appearance.AreAppsDark());
showDarkOrLight("Current app", appearance.IsDark());
showDarkOrLight("Background", appearance.IsUsingDarkBackground());
r.y += lineHeight;
dc.SetPen(*wxTRANSPARENT_PEN);