libs/gtkmm2ext/cell_renderer_color_selector.cc

   1 /*
   2  * Copyright (C) 2011-2015 Paul Davis <paul@linuxaudiosystems.com>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with this program; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17  */
  18
  19 #include <iostream>
  20 #include <gtkmm.h>
  21
  22 #include "gtkmm2ext/cell_renderer_color_selector.h"
  23 #include "gtkmm2ext/utils.h"
  24
  25 using namespace std;
  26 using namespace Gtk;
  27 using namespace Gdk;
  28 using namespace Glib;
  29 using namespace Gtkmm2ext;
  30
  31
  32 CellRendererColorSelector::CellRendererColorSelector()
  33         : Glib::ObjectBase (typeid(CellRendererColorSelector) )
  34         , Gtk::CellRenderer()
  35         , _property_color (*this, "color")
  36 {
  37         property_mode() = Gtk::CELL_RENDERER_MODE_ACTIVATABLE;
  38         property_sensitive() = false;
  39         property_xpad() = 2;
  40         property_ypad() = 2;
  41
  42         Gdk::Color c;
  43
  44         c.set_red (0);
  45         c.set_green (0);
  46         c.set_blue (0);
  47
  48         property_color() = c;
  49 }
  50
  51 CellRendererColorSelector::~CellRendererColorSelector ()
  52 {
  53 }
  54
  55 Glib::PropertyProxy<Gdk::Color>
  56 CellRendererColorSelector::property_color()
  57 {
  58         return _property_color.get_proxy();
  59 }
  60
  61 void
  62 CellRendererColorSelector::render_vfunc (const Glib::RefPtr<Gdk::Drawable>& window, Gtk::Widget& /*widget*/, const Gdk::Rectangle& /*background_area*/, const Gdk::Rectangle& cell_area, const Gdk::Rectangle& expose_area, Gtk::CellRendererState /*flags*/)
  63 {
  64         Gdk::Color c = _property_color.get_value();
  65
  66         if (c.gobj() != 0) {
  67
  68                 cairo_t* cr = gdk_cairo_create (window->gobj());
  69                 double r, g, b;
  70                 Gdk::Color c = _property_color.get_value();
  71
  72                 cairo_rectangle (cr, expose_area.get_x(), expose_area.get_y(), expose_area.get_width(), expose_area.get_height());
  73                 cairo_clip (cr);
  74
  75                 r = c.get_red_p();
  76                 g = c.get_green_p();
  77                 b = c.get_blue_p();
  78
  79                 cairo_rectangle_t drawing_rect;
  80
  81                 drawing_rect.x = cell_area.get_x() + property_xpad();
  82                 drawing_rect.y = cell_area.get_y() + property_ypad();
  83                 drawing_rect.width = cell_area.get_width() - (2 * property_xpad());
  84                 drawing_rect.height = cell_area.get_height() - (2 * property_ypad());
  85
  86                 Gtkmm2ext::rounded_rectangle (cr, drawing_rect.x, drawing_rect.y, drawing_rect.width, drawing_rect.height, 5);
  87                 cairo_set_source_rgb (cr, r, g, b);
  88                 cairo_fill (cr);
  89
  90                 cairo_destroy (cr);
  91         }
  92 }
  93