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 #include "editor.h"
  25 #include "ardour_ui.h"
  26 #include "verbose_cursor.h"
  27 #include "utils.h"
  28 #include "editor_drag.h"
  29
  30 #include "i18n.h"
  31
  32 using namespace std;
  33 using namespace ARDOUR;
  34
  35 VerboseCursor::VerboseCursor (Editor* editor)
  36         : _editor (editor)
  37         , _visible (false)
  38         , _xoffset (0)
  39         , _yoffset (0)
  40 {
  41         Pango::FontDescription* font = get_font_for_style (N_("VerboseCanvasCursor"));
  42
  43         _canvas_item = new ArdourCanvas::NoEventText (*_editor->track_canvas->root());
  44         _canvas_item->property_font_desc() = *font;
  45         _canvas_item->property_anchor() = Gtk::ANCHOR_NW;
  46
  47         delete font;
  48 }
  49
  50 ArdourCanvas::Item *
  51 VerboseCursor::canvas_item () const
  52 {
  53         return _canvas_item;
  54 }
  55
  56 void
  57 VerboseCursor::set (string const & text, double x, double y)
  58 {
  59         set_text (text);
  60         set_position (x, y);
  61 }
  62
  63 void
  64 VerboseCursor::set_text (string const & text)
  65 {
  66         _canvas_item->property_text() = text.c_str();
  67 }
  68
  69 /** @param xoffset x offset to be applied on top of any set_position() call
  70  *  before the next show ().
  71  *  @param yoffset y offset as above.
  72  */
  73 void
  74 VerboseCursor::show (double xoffset, double yoffset)
  75 {
  76         _xoffset = xoffset;
  77         _yoffset = yoffset;
  78
  79         if (_visible) {
  80                 return;
  81         }
  82
  83         _canvas_item->raise_to_top ();
  84         _canvas_item->show ();
  85         _visible = true;
  86 }
  87
  88 void
  89 VerboseCursor::hide ()
  90 {
  91         _canvas_item->hide ();
  92         _visible = false;
  93 }
  94
  95 double
  96 VerboseCursor::clamp_x (double x)
  97 {
  98         if (x < 0) {
  99                 x = 0;
 100         } else {
 101                 x = min (_editor->_canvas_width - 200.0, x);
 102         }
 103         return x;
 104 }
 105
 106 double
 107 VerboseCursor::clamp_y (double y)
 108 {
 109         if (y < _editor->canvas_timebars_vsize) {
 110                 y = _editor->canvas_timebars_vsize;
 111         } else {
 112                 y = min (_editor->_canvas_height - 50, y);
 113         }
 114         return y;
 115 }
 116
 117 void
 118 VerboseCursor::set_time (framepos_t frame, double x, double y)
 119 {
 120         char buf[128];
 121         Timecode::Time timecode;
 122         Timecode::BBT_Time bbt;
 123         int hours, mins;
 124         framepos_t frame_rate;
 125         float secs;
 126
 127         if (_editor->_session == 0) {
 128                 return;
 129         }
 130
 131         AudioClock::Mode m;
 132
 133         if (Profile->get_sae() || Profile->get_small_screen()) {
 134                 m = ARDOUR_UI::instance()->primary_clock.mode();
 135         } else {
 136                 m = ARDOUR_UI::instance()->secondary_clock.mode();
 137         }
 138
 139         switch (m) {
 140         case AudioClock::BBT:
 141                 _editor->_session->bbt_time (frame, bbt);
 142                 snprintf (buf, sizeof (buf), "%02" PRIu32 "|%02" PRIu32 "|%02" PRIu32, bbt.bars, bbt.beats, bbt.ticks);
 143                 break;
 144
 145         case AudioClock::Timecode:
 146                 _editor->_session->timecode_time (frame, timecode);
 147                 snprintf (buf, sizeof (buf), "%02" PRId32 ":%02" PRId32 ":%02" PRId32 ":%02" PRId32, timecode.hours, timecode.minutes, timecode.seconds, timecode.frames);
 148                 break;
 149
 150         case AudioClock::MinSec:
 151                 /* XXX this is copied from show_verbose_duration_cursor() */
 152                 frame_rate = _editor->_session->frame_rate();
 153                 hours = frame / (frame_rate * 3600);
 154                 frame = frame % (frame_rate * 3600);
 155                 mins = frame / (frame_rate * 60);
 156                 frame = frame % (frame_rate * 60);
 157                 secs = (float) frame / (float) frame_rate;
 158                 snprintf (buf, sizeof (buf), "%02" PRId32 ":%02" PRId32 ":%07.4f", hours, mins, secs);
 159                 break;
 160
 161         default:
 162                 snprintf (buf, sizeof(buf), "%" PRIi64, frame);
 163                 break;
 164         }
 165
 166         set (buf, x, y);
 167 }
 168
 169 void
 170 VerboseCursor::set_duration (framepos_t start, framepos_t end, double x, double y)
 171 {
 172         char buf[128];
 173         Timecode::Time timecode;
 174         Timecode::BBT_Time sbbt;
 175         Timecode::BBT_Time ebbt;
 176         int hours, mins;
 177         framepos_t distance, frame_rate;
 178         float secs;
 179         Meter meter_at_start (_editor->_session->tempo_map().meter_at(start));
 180
 181         if (_editor->_session == 0) {
 182                 return;
 183         }
 184
 185         AudioClock::Mode m;
 186
 187         if (Profile->get_sae() || Profile->get_small_screen()) {
 188                 m = ARDOUR_UI::instance()->primary_clock.mode ();
 189         } else {
 190                 m = ARDOUR_UI::instance()->secondary_clock.mode ();
 191         }
 192
 193         switch (m) {
 194         case AudioClock::BBT:
 195         {
 196                 _editor->_session->bbt_time (start, sbbt);
 197                 _editor->_session->bbt_time (end, ebbt);
 198
 199                 /* subtract */
 200                 /* XXX this computation won't work well if the
 201                 user makes a selection that spans any meter changes.
 202                 */
 203
 204                 /* use signed integers for the working values so that
 205                    we can underflow.
 206                 */
 207
 208                 int ticks = ebbt.ticks;
 209                 int beats = ebbt.beats;
 210                 int bars = ebbt.bars;
 211
 212                 ticks -= sbbt.ticks;
 213                 if (ticks < 0) {
 214                         ticks += int (Timecode::BBT_Time::ticks_per_beat);
 215                         --beats;
 216                 }
 217
 218                 beats -= sbbt.beats;
 219                 if (beats < 0) {
 220                         beats += int (meter_at_start.beats_per_bar());
 221                         --bars;
 222                 }
 223
 224                 bars -= sbbt.bars;
 225
 226                 snprintf (buf, sizeof (buf), "%02" PRIu32 "|%02" PRIu32 "|%02" PRIu32, bars, beats, ticks);
 227                 break;
 228         }
 229
 230         case AudioClock::Timecode:
 231                 _editor->_session->timecode_duration (end - start, timecode);
 232                 snprintf (buf, sizeof (buf), "%02" PRId32 ":%02" PRId32 ":%02" PRId32 ":%02" PRId32, timecode.hours, timecode.minutes, timecode.seconds, timecode.frames);
 233                 break;
 234
 235         case AudioClock::MinSec:
 236                 /* XXX this stuff should be elsewhere.. */
 237                 distance = end - start;
 238                 frame_rate = _editor->_session->frame_rate();
 239                 hours = distance / (frame_rate * 3600);
 240                 distance = distance % (frame_rate * 3600);
 241                 mins = distance / (frame_rate * 60);
 242                 distance = distance % (frame_rate * 60);
 243                 secs = (float) distance / (float) frame_rate;
 244                 snprintf (buf, sizeof (buf), "%02" PRId32 ":%02" PRId32 ":%07.4f", hours, mins, secs);
 245                 break;
 246
 247         default:
 248                 snprintf (buf, sizeof(buf), "%" PRIi64, end - start);
 249                 break;
 250         }
 251
 252         set (buf, x, y);
 253 }
 254
 255 void
 256 VerboseCursor::set_color (uint32_t color)
 257 {
 258         _canvas_item->property_fill_color_rgba() = color;
 259 }
 260
 261 /** Set the position of the verbose cursor.  Any x/y offsets
 262  *  passed to the last call to show() will be applied to the
 263  *  coordinates passed in here.
 264  */
 265 void
 266 VerboseCursor::set_position (double x, double y)
 267 {
 268         _canvas_item->property_x() = clamp_x (x + _xoffset);
 269         _canvas_item->property_y() = clamp_y (y + _yoffset);
 270 }
 271
 272 bool
 273 VerboseCursor::visible () const
 274 {
 275         return _visible;
 276 }