Merge CV, ver=5.1; ops/methods from HV, and interface from CV where possible

[goodguy/history.git] / cinelerra-5.1 / cinelerra / ctracking.C

diff --git a/cinelerra-5.1/cinelerra/ctracking.C b/cinelerra-5.1/cinelerra/ctracking.C
new file mode 100644 (file)
index 0000000..5de2a20
--- /dev/null
+++ b/cinelerra-5.1/cinelerra/ctracking.C
@@ -0,0 +1,178 @@
+
+/*
+ * CINELERRA
+ * Copyright (C) 2008 Adam Williams <broadcast at earthling dot net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#include "bcsignals.h"
+#include "cplayback.h"
+#include "ctimebar.h"
+#include "ctracking.h"
+#include "cwindow.h"
+#include "cwindowgui.h"
+#include "edl.h"
+#include "edlsession.h"
+#include "localsession.h"
+#include "mainclock.h"
+#include "maincursor.h"
+#include "mtimebar.h"
+#include "mwindow.h"
+#include "mwindowgui.h"
+#include "patchbay.h"
+#include "trackcanvas.h"
+#include "transportque.h"
+#include "zoombar.h"
+
+CTracking::CTracking(MWindow *mwindow, CWindow *cwindow)
+ : Tracking(mwindow)
+{
+       this->cwindow = cwindow;
+}
+
+CTracking::~CTracking()
+{
+}
+
+PlaybackEngine* CTracking::get_playback_engine()
+{
+       return cwindow->playback_engine;
+}
+
+int CTracking::start_playback(double new_position, int active)
+{
+       mwindow->gui->set_playing_back(1);
+       if( active )
+               mwindow->edl->local_session->set_playback_start(new_position);
+       return Tracking::start_playback(new_position);
+}
+
+int CTracking::stop_playback()
+{
+       mwindow->gui->set_playing_back(0);
+       Tracking::stop_playback();
+       mwindow->edl->local_session->set_playback_end(get_tracking_position());
+       return 0;
+}
+
+#define SCROLL_THRESHOLD .5
+
+
+int CTracking::update_scroll(double position)
+{
+       int updated_scroll = 0;
+
+       if(mwindow->edl->session->view_follows_playback)
+       {
+               TimelinePane *pane = mwindow->gui->get_focused_pane();
+               double seconds_per_pixel = (double)mwindow->edl->local_session->zoom_sample /
+                       mwindow->edl->session->sample_rate;
+               double half_canvas = seconds_per_pixel *
+                       pane->canvas->get_w() / 2;
+               double midpoint = mwindow->edl->local_session->view_start[pane->number] *
+                       seconds_per_pixel +
+                       half_canvas;
+
+               if(get_playback_engine()->command->get_direction() == PLAY_FORWARD)
+               {
+                       double left_boundary = midpoint + SCROLL_THRESHOLD * half_canvas;
+                       double right_boundary = midpoint + half_canvas;
+
+                       if(position > left_boundary &&
+                               position < right_boundary)
+                       {
+                               int pixels = Units::to_int64((position - left_boundary) *
+                                               mwindow->edl->session->sample_rate /
+                                               mwindow->edl->local_session->zoom_sample);
+                               if(pixels)
+                               {
+                                       mwindow->move_right(pixels);
+//printf("CTracking::update_scroll 1 %d\n", pixels);
+                                       updated_scroll = 1;
+                               }
+                       }
+               }
+               else
+               {
+                       double right_boundary = midpoint - SCROLL_THRESHOLD * half_canvas;
+                       double left_boundary = midpoint - half_canvas;
+
+                       if(position < right_boundary &&
+                               position > left_boundary &&
+                               mwindow->edl->local_session->view_start > 0)
+                       {
+                               int pixels = Units::to_int64((right_boundary - position) *
+                                               mwindow->edl->session->sample_rate /
+                                               mwindow->edl->local_session->zoom_sample);
+                               if(pixels)
+                               {
+                                       mwindow->move_left(pixels);
+                                       updated_scroll = 1;
+                               }
+                       }
+               }
+       }
+
+       return updated_scroll;
+}
+
+void CTracking::update_tracker(double position)
+{
+       int updated_scroll = 0;
+       cwindow->gui->lock_window("CTracking::update_tracker 1");
+
+// This is going to boost the latency but we need to update the timebar
+       cwindow->gui->timebar->update(1);
+//     cwindow->gui->timebar->flash();
+       cwindow->gui->unlock_window();
+
+// Update mwindow cursor
+       mwindow->gui->lock_window("CTracking::update_tracker 2");
+
+       mwindow->edl->local_session->set_selectionstart(position);
+       mwindow->edl->local_session->set_selectionend(position);
+
+       updated_scroll = update_scroll(position);
+
+       mwindow->gui->mainclock->update(position);
+       mwindow->gui->update_patchbay();
+       mwindow->gui->update_timebar(0);
+
+       if(!updated_scroll)
+       {
+               mwindow->gui->update_cursor();
+               // we just need to update clocks, not everything
+               mwindow->gui->zoombar->update_clocks();
+
+               for(int i = 0; i < TOTAL_PANES; i++)
+                       if(mwindow->gui->pane[i])
+                               mwindow->gui->pane[i]->canvas->flash(0);
+       }
+
+       mwindow->gui->flush();
+       mwindow->gui->unlock_window();
+
+// Plugin GUI's hold lock on mwindow->gui here during user interface handlers.
+       mwindow->update_plugin_guis();
+
+
+       update_meters((int64_t)(position * mwindow->edl->session->sample_rate));
+}
+
+void CTracking::draw()
+{
+}