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