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Fix passing alpha channel to/from colour dialog for GTK+ 2.

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Pass to/from GtkColorSelection widget also alpha component of the selected colour.
This commit is contained in:
Artur Wieczorek 2015-11-22 10:16:33 +01:00
parent 363492e50b
commit fc5033afde
1 changed files with 9 additions and 1 deletions
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10
src/gtk/colordlg.cpp
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@ -97,6 +97,8 @@ void wxColourDialog::ColourDataToDialog()
gtk_color_selection_set_current_rgba(sel, color);
#else
gtk_color_selection_set_current_color(sel, color.GetColor());
// Convert alpha range: [0,255] -> [0,65535]
gtk_color_selection_set_current_alpha(sel, 257*color.Alpha());
#endif
}
@ -129,11 +131,17 @@ void wxColourDialog::DialogToColourData()
#ifdef __WXGTK3__
GdkRGBA clr;
gtk_color_selection_get_current_rgba(sel, &clr);
m_data.SetColour(clr);
#else
GdkColor clr;
gtk_color_selection_get_current_color(sel, &clr);
// Set RGB colour
wxColour cRGB(clr);
guint16 alpha = gtk_color_selection_get_current_alpha(sel);
// Set RGBA colour (convert alpha range: [0,65535] -> [0,255]).
wxColour cRGBA(cRGB.Red(), cRGB.Green(), cRGB.Blue(), alpha/257);
m_data.SetColour(cRGBA);
#endif
m_data.SetColour(clr);
// Extract custom palette: