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Improve accuracy of Y to L conversion, fixes #4338

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This commit is contained in:
heckflosse
2018-01-29 21:17:34 +01:00
parent 24151b313a
commit e7d90ec1a2
9 changed files with 163 additions and 275 deletions
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3
rtgui/histogrampanel.h
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@@ -76,7 +76,7 @@ public:
HistogramRGBArea();
~HistogramRGBArea();
void updateBackBuffer (int r, int g, int b, Glib::ustring profile = "", Glib::ustring profileW = "");
void updateBackBuffer (int r, int g, int b, const Glib::ustring &profile = "", const Glib::ustring &profileW = "");
void updateFreeze (bool f);
bool getFreeze ();
bool getShow ();
@@ -92,7 +92,6 @@ public:
bool on_draw(const ::Cairo::RefPtr< Cairo::Context> &cr);
bool on_button_press_event (GdkEventButton* event);
private:
void rgb2lab (Glib::ustring profile, Glib::ustring profileW, int r, int g, int b, float &LAB_l, float &LAB_a, float &LAB_b);
Gtk::SizeRequestMode get_request_mode_vfunc () const;
void get_preferred_height_vfunc (int& minimum_height, int& natural_height) const;
void get_preferred_width_vfunc (int &minimum_width, int &natural_width) const;