gtk2_ardour/verbose_cursor.cc

   1 /*
   2     Copyright (C) 2000-2011 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 #include <string>
  21 #include <gtkmm/enums.h>
  22 #include "pbd/stacktrace.h"
  23 #include "ardour/profile.h"
  24
  25 #include "ardour_ui.h"
  26 #include "audio_clock.h"
  27 #include "editor.h"
  28 #include "editor_drag.h"
  29 #include "utils.h"
  30 #include "verbose_cursor.h"
  31
  32 #include "i18n.h"
  33
  34 using namespace std;
  35 using namespace ARDOUR;
  36
  37 VerboseCursor::VerboseCursor (Editor* editor)
  38         : _editor (editor)
  39         , _visible (false)
  40         , _xoffset (0)
  41         , _yoffset (0)
  42 {
  43         _canvas_item = new ArdourCanvas::NoEventText (*_editor->track_canvas->root());
  44         _canvas_item->property_font_desc() = get_font_for_style (N_("VerboseCanvasCursor"));
  45         _canvas_item->property_anchor() = Gtk::ANCHOR_NW;
  46 }
  47
  48 ArdourCanvas::Item *
  49 VerboseCursor::canvas_item () const
  50 {
  51         return _canvas_item;
  52 }
  53
  54 void
  55 VerboseCursor::set (string const & text, double x, double y)
  56 {
  57         set_text (text);
  58         set_position (x, y);
  59 }
  60
  61 void
  62 VerboseCursor::set_text (string const & text)
  63 {
  64         _canvas_item->property_text() = text.c_str();
  65 }
  66
  67 /** @param xoffset x offset to be applied on top of any set_position() call
  68  *  before the next show ().
  69  *  @param yoffset y offset as above.
  70  */
  71 void
  72 VerboseCursor::show (double xoffset, double yoffset)
  73 {
  74         _xoffset = xoffset;
  75         _yoffset = yoffset;
  76
  77         if (_visible) {
  78                 return;
  79         }
  80
  81         _canvas_item->raise_to_top ();
  82         _canvas_item->show ();
  83         _visible = true;
  84 }
  85
  86 void
  87 VerboseCursor::hide ()
  88 {
  89         _canvas_item->hide ();
  90         _visible = false;
  91 }
  92
  93 double
  94 VerboseCursor::clamp_x (double x)
  95 {
  96         if (x < 0) {
  97                 x = 0;
  98         } else {
  99                 x = min (_editor->_canvas_width - 200.0, x);
 100         }
 101         return x;
 102 }
 103
 104 double
 105 VerboseCursor::clamp_y (double y)
 106 {
 107         if (y < _editor->canvas_timebars_vsize) {
 108                 y = _editor->canvas_timebars_vsize;
 109         } else {
 110                 y = min (_editor->_canvas_height - 50, y);
 111         }
 112         return y;
 113 }
 114
 115 void
 116 VerboseCursor::set_time (framepos_t frame, double x, double y)
 117 {
 118         char buf[128];
 119         Timecode::Time timecode;
 120         Timecode::BBT_Time bbt;
 121         int hours, mins;
 122         framepos_t frame_rate;
 123         float secs;
 124
 125         if (_editor->_session == 0) {
 126                 return;
 127         }
 128
 129         AudioClock::Mode m;
 130
 131         if (Profile->get_sae() || Profile->get_small_screen()) {
 132                 m = ARDOUR_UI::instance()->primary_clock->mode();
 133         } else {
 134                 m = ARDOUR_UI::instance()->secondary_clock->mode();
 135         }
 136
 137         switch (m) {
 138         case AudioClock::BBT:
 139                 _editor->_session->bbt_time (frame, bbt);
 140                 snprintf (buf, sizeof (buf), "%02" PRIu32 "|%02" PRIu32 "|%02" PRIu32, bbt.bars, bbt.beats, bbt.ticks);
 141                 break;
 142
 143         case AudioClock::Timecode:
 144                 _editor->_session->timecode_time (frame, timecode);
 145                 snprintf (buf, sizeof (buf), "%02" PRId32 ":%02" PRId32 ":%02" PRId32 ":%02" PRId32, timecode.hours, timecode.minutes, timecode.seconds, timecode.frames);
 146                 break;
 147
 148         case AudioClock::MinSec:
 149                 /* XXX this is copied from show_verbose_duration_cursor() */
 150                 frame_rate = _editor->_session->frame_rate();
 151                 hours = frame / (frame_rate * 3600);
 152                 frame = frame % (frame_rate * 3600);
 153                 mins = frame / (frame_rate * 60);
 154                 frame = frame % (frame_rate * 60);
 155                 secs = (float) frame / (float) frame_rate;
 156                 snprintf (buf, sizeof (buf), "%02" PRId32 ":%02" PRId32 ":%07.4f", hours, mins, secs);
 157                 break;
 158
 159         default:
 160                 snprintf (buf, sizeof(buf), "%" PRIi64, frame);
 161                 break;
 162         }
 163
 164         set (buf, x, y);
 165 }
 166
 167 void
 168 VerboseCursor::set_duration (framepos_t start, framepos_t end, double x, double y)
 169 {
 170         char buf[128];
 171         Timecode::Time timecode;
 172         Timecode::BBT_Time sbbt;
 173         Timecode::BBT_Time ebbt;
 174         int hours, mins;
 175         framepos_t distance, frame_rate;
 176         float secs;
 177         Meter meter_at_start (_editor->_session->tempo_map().meter_at(start));
 178
 179         if (_editor->_session == 0) {
 180                 return;
 181         }
 182
 183         AudioClock::Mode m;
 184
 185         if (Profile->get_sae() || Profile->get_small_screen()) {
 186                 m = ARDOUR_UI::instance()->primary_clock->mode ();
 187         } else {
 188                 m = ARDOUR_UI::instance()->secondary_clock->mode ();
 189         }
 190
 191         switch (m) {
 192         case AudioClock::BBT:
 193         {
 194                 _editor->_session->bbt_time (start, sbbt);
 195                 _editor->_session->bbt_time (end, ebbt);
 196
 197                 /* subtract */
 198                 /* XXX this computation won't work well if the
 199                 user makes a selection that spans any meter changes.
 200                 */
 201
 202                 /* use signed integers for the working values so that
 203                    we can underflow.
 204                 */
 205
 206                 int ticks = ebbt.ticks;
 207                 int beats = ebbt.beats;
 208                 int bars = ebbt.bars;
 209
 210                 ticks -= sbbt.ticks;
 211                 if (ticks < 0) {
 212                         ticks += int (Timecode::BBT_Time::ticks_per_beat);
 213                         --beats;
 214                 }
 215
 216                 beats -= sbbt.beats;
 217                 if (beats < 0) {
 218                         beats += int (meter_at_start.beats_per_bar());
 219                         --bars;
 220                 }
 221
 222                 bars -= sbbt.bars;
 223
 224                 snprintf (buf, sizeof (buf), "%02" PRIu32 "|%02" PRIu32 "|%02" PRIu32, bars, beats, ticks);
 225                 break;
 226         }
 227
 228         case AudioClock::Timecode:
 229                 _editor->_session->timecode_duration (end - start, timecode);
 230                 snprintf (buf, sizeof (buf), "%02" PRId32 ":%02" PRId32 ":%02" PRId32 ":%02" PRId32, timecode.hours, timecode.minutes, timecode.seconds, timecode.frames);
 231                 break;
 232
 233         case AudioClock::MinSec:
 234                 /* XXX this stuff should be elsewhere.. */
 235                 distance = end - start;
 236                 frame_rate = _editor->_session->frame_rate();
 237                 hours = distance / (frame_rate * 3600);
 238                 distance = distance % (frame_rate * 3600);
 239                 mins = distance / (frame_rate * 60);
 240                 distance = distance % (frame_rate * 60);
 241                 secs = (float) distance / (float) frame_rate;
 242                 snprintf (buf, sizeof (buf), "%02" PRId32 ":%02" PRId32 ":%07.4f", hours, mins, secs);
 243                 break;
 244
 245         default:
 246                 snprintf (buf, sizeof(buf), "%" PRIi64, end - start);
 247                 break;
 248         }
 249
 250         set (buf, x, y);
 251 }
 252
 253 void
 254 VerboseCursor::set_color (uint32_t color)
 255 {
 256         _canvas_item->property_fill_color_rgba() = color;
 257 }
 258
 259 /** Set the position of the verbose cursor.  Any x/y offsets
 260  *  passed to the last call to show() will be applied to the
 261  *  coordinates passed in here.
 262  */
 263 void
 264 VerboseCursor::set_position (double x, double y)
 265 {
 266         _canvas_item->property_x() = clamp_x (x + _xoffset);
 267         _canvas_item->property_y() = clamp_y (y + _yoffset);
 268 }
 269
 270 bool
 271 VerboseCursor::visible () const
 272 {
 273         return _visible;
 274 }