rtgui/histogrampanel.h

   1 /*
   2  *  This file is part of RawTherapee.
   3  *
   4  *  Copyright (c) 2004-2010 Gabor Horvath <hgabor@rawtherapee.com>
   5  *
   6  *  RawTherapee is free software: you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation, either version 3 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  RawTherapee is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with RawTherapee.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19 #ifndef _HISTOGRAMPANEL_
  20 #define _HISTOGRAMPANEL_
  21
  22 #include <gtkmm.h>
  23 #include <glibmm.h>
  24 #include <rtengine.h>
  25
  26 class HistogramArea;
  27 struct HistogramAreaIdleHelper {
  28     HistogramArea* harea;
  29     bool destroyed;
  30     int pending;
  31 };
  32
  33 class HistogramArea : public Gtk::DrawingArea {
  34
  35   protected:
  36
  37     Glib::RefPtr<Gdk::GC> gc_;
  38     Glib::RefPtr<Gdk::Pixmap> backBuffer;
  39
  40     Gdk::Color black;
  41     Gdk::Color white;
  42     Gdk::Color red;
  43     Gdk::Color green;
  44     Gdk::Color blue;
  45     Gdk::Color lgray;
  46     Gdk::Color mgray;
  47     Gdk::Color dgray;
  48     unsigned int lhist[256];
  49     unsigned int rhist[256];
  50     unsigned int ghist[256];
  51     unsigned int bhist[256];
  52     bool valid;
  53     bool showFull;
  54     int oldwidth, oldheight;
  55
  56     bool needVal;
  57     bool needRed;
  58     bool needGreen;
  59     bool needBlue;
  60
  61     HistogramAreaIdleHelper* haih;
  62
  63   public:
  64
  65     HistogramArea();
  66     ~HistogramArea();
  67
  68     void renderHistogram ();
  69     void update (unsigned int* rh, unsigned int* gh, unsigned int* bh, unsigned int* lh);
  70     void updateOptions (bool r, bool g, bool b, bool v);
  71     void on_realize();
  72     bool on_expose_event(GdkEventExpose* event);
  73     bool on_button_press_event (GdkEventButton* event);
  74     void styleChanged (const Glib::RefPtr<Gtk::Style>& style);
  75 };
  76
  77 class HistogramPanel : public Gtk::HBox, public rtengine::HistogramListener {
  78
  79   protected:
  80
  81     HistogramArea* histogramArea;
  82     Gtk::ToggleButton* showRed;
  83     Gtk::ToggleButton* showGreen;
  84     Gtk::ToggleButton* showBlue;
  85     Gtk::ToggleButton* showValue;
  86
  87     sigc::connection rconn;
  88
  89   public:
  90
  91     HistogramPanel ();
  92
  93     void histogramChanged (unsigned int* rh, unsigned int* gh, unsigned int* bh, unsigned int* lh) { histogramArea->update (rh, gh, bh, lh); }
  94     void rgbv_toggled ();
  95     void resized (Gtk::Allocation& req);
  96 };
  97
  98 #endif