gtk2_ardour/port_matrix_component.h

   1 /*
   2     Copyright (C) 2002-2009 Paul Davis
   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
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 #ifndef __gtk_ardour_port_matrix_component_h__
  21 #define __gtk_ardour_port_matrix_component_h__
  22
  23 #include <stdint.h>
  24 #include <gtkmm/eventbox.h>
  25 #include <boost/shared_ptr.hpp>
  26
  27 class PortMatrix;
  28 class PortMatrixBody;
  29 class PortMatrixNode;
  30 class PortGroup;
  31 class PortGroupList;
  32
  33 namespace ARDOUR {
  34         class BundleChannel;
  35 }
  36
  37 /** One component of the PortMatrix.  This is a cairo-rendered
  38  *  Pixmap.
  39  */
  40 class PortMatrixComponent
  41 {
  42 public:
  43         PortMatrixComponent (PortMatrix *, PortMatrixBody *);
  44         virtual ~PortMatrixComponent ();
  45
  46         virtual double component_to_parent_x (double x) const = 0;
  47         virtual double parent_to_component_x (double x) const = 0;
  48         virtual double component_to_parent_y (double y) const = 0;
  49         virtual double parent_to_component_y (double y) const = 0;
  50         virtual void mouseover_changed (std::list<PortMatrixNode> const &) = 0;
  51         virtual void draw_extra (cairo_t *) = 0;
  52         virtual void button_press (double, double, int, uint32_t, guint) {}
  53         virtual void button_release (double, double, int, uint32_t, guint) {}
  54         virtual void motion (double, double) {}
  55
  56         void set_show_ports (bool);
  57         void setup ();
  58         GdkPixmap* get_pixmap (GdkDrawable *);
  59         std::pair<uint32_t, uint32_t> dimensions ();
  60
  61         void require_render () {
  62                 _render_required = true;
  63         }
  64
  65         void require_rebuild () {
  66                 _dimension_computation_required = true;
  67                 _render_required = true;
  68         }
  69
  70         void set_parent_rectangle (Gdk::Rectangle const & r) {
  71                 _parent_rectangle = r;
  72         }
  73
  74         Gdk::Rectangle parent_rectangle () const {
  75                 return _parent_rectangle;
  76         }
  77
  78         /** @return grid spacing */
  79         static uint32_t grid_spacing () {
  80                 return 24;
  81         }
  82
  83 protected:
  84
  85         /** @return width of borders drawn around labels */
  86         static uint32_t label_border_width () {
  87                 return 1;
  88         }
  89
  90         /** @return padding between a name and the nearest line */
  91         static uint32_t name_pad () {
  92                 return 8;
  93         }
  94
  95         /** @return width of thin lines in the grid */
  96         static double thin_grid_line_width () {
  97                 return 0.5;
  98         }
  99
 100         /** @return width of thick lines in the grid */
 101         static double thick_grid_line_width () {
 102                 return 1;
 103         }
 104
 105         /** @return space around the connection indicator */
 106         static uint32_t connection_indicator_pad () {
 107                 return 6;
 108         }
 109
 110         static uint32_t mouseover_line_width () {
 111                 return 4;
 112         }
 113
 114         /** @return angle of column labels, in radians */
 115         static double angle () {
 116                 return M_PI / 4;
 117         }
 118
 119         /** @return background colour */
 120         Gdk::Color background_colour ();
 121
 122         /* XXX I guess these colours should come from a theme, or something */
 123
 124         /** @return text colour */
 125         static Gdk::Color text_colour () {
 126                 return Gdk::Color ("#ffffff");
 127         }
 128
 129         /** @return grid line colour */
 130         static Gdk::Color grid_colour () {
 131                 return Gdk::Color ("#000000");
 132         }
 133
 134         /** @return colour of association blobs */
 135         static Gdk::Color association_colour () {
 136                 return Gdk::Color ("#00ff00");
 137         }
 138
 139         /** @return colour to paint grid squares when they can't be associated */
 140         static Gdk::Color non_connectable_colour () {
 141                 return Gdk::Color ("#cccccc");
 142         }
 143
 144         /** @return colour to paint mouseover lines */
 145         static Gdk::Color mouseover_line_colour () {
 146                 return Gdk::Color ("#ff0000");
 147         }
 148
 149         /** @return colour to paint channel highlights */
 150         static Gdk::Color highlighted_channel_colour () {
 151                 return Gdk::Color ("#777777");
 152         }
 153
 154         /* XXX */
 155         static Gdk::Color get_a_bundle_colour (int x) {
 156                 if ((x % 2) == 0) {
 157                         return Gdk::Color ("#547027");
 158                 } else {
 159                         return Gdk::Color ("#3552a6");
 160                 }
 161         }
 162
 163         /* XXX */
 164         static Gdk::Color get_a_group_colour (int x) {
 165                 if ((x % 2) == 0) {
 166                         return Gdk::Color ("#222222");
 167                 } else {
 168                         return Gdk::Color ("#444444");
 169                 }
 170         }
 171
 172         void set_source_rgb (cairo_t *, Gdk::Color const &);
 173         void set_source_rgba (cairo_t *, Gdk::Color const &, double);
 174         uint32_t group_size (boost::shared_ptr<const PortGroup>) const;
 175         uint32_t channel_to_position (ARDOUR::BundleChannel, boost::shared_ptr<const PortGroup>) const;
 176         virtual ARDOUR::BundleChannel position_to_channel (double, double, boost::shared_ptr<const PortGroup>) const;
 177
 178         /** Render the complete component to a cairo context. */
 179         virtual void render (cairo_t *) = 0;
 180         /** Compute any required dimensions.  This must set up
 181          *  _width and _height.
 182          */
 183         virtual void compute_dimensions () = 0;
 184
 185         PortMatrix* _matrix;
 186         PortMatrixBody* _body; ///< the PortMatrixBody that we're in
 187         uint32_t _width; ///< full width of the contents
 188         uint32_t _height; ///< full height of the contents
 189         Gdk::Rectangle _parent_rectangle;
 190
 191 private:
 192         GdkPixmap* _pixmap; ///< pixmap
 193         bool _render_required; ///< true if the rendered pixmap is out of date
 194         bool _dimension_computation_required; ///< true if the dimensions are out of date
 195 };
 196
 197 #endif