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-rw-r--r--src/wx/timeline.cc652
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diff --git a/src/wx/timeline.cc b/src/wx/timeline.cc
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+/*
+ Copyright (C) 2013 Carl Hetherington <cth@carlh.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., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#include <list>
+#include <wx/graphics.h>
+#include <boost/weak_ptr.hpp>
+#include "lib/film.h"
+#include "lib/playlist.h"
+#include "film_editor.h"
+#include "timeline.h"
+#include "wx_util.h"
+
+using std::list;
+using std::cout;
+using std::max;
+using boost::shared_ptr;
+using boost::weak_ptr;
+using boost::dynamic_pointer_cast;
+using boost::bind;
+
+class View : public boost::noncopyable
+{
+public:
+ View (Timeline& t)
+ : _timeline (t)
+ {
+
+ }
+
+ virtual ~View () {}
+
+ void paint (wxGraphicsContext* g)
+ {
+ _last_paint_bbox = bbox ();
+ do_paint (g);
+ }
+
+ void force_redraw ()
+ {
+ _timeline.force_redraw (_last_paint_bbox);
+ _timeline.force_redraw (bbox ());
+ }
+
+ virtual dcpomatic::Rect<int> bbox () const = 0;
+
+protected:
+ virtual void do_paint (wxGraphicsContext *) = 0;
+
+ int time_x (Time t) const
+ {
+ return _timeline.tracks_position().x + t * _timeline.pixels_per_time_unit();
+ }
+
+ Timeline& _timeline;
+
+private:
+ dcpomatic::Rect<int> _last_paint_bbox;
+};
+
+class ContentView : public View
+{
+public:
+ ContentView (Timeline& tl, shared_ptr<Content> c)
+ : View (tl)
+ , _content (c)
+ , _track (0)
+ , _selected (false)
+ {
+ _content_connection = c->Changed.connect (bind (&ContentView::content_changed, this, _2, _3));
+ }
+
+ dcpomatic::Rect<int> bbox () const
+ {
+ shared_ptr<const Film> film = _timeline.film ();
+ shared_ptr<const Content> content = _content.lock ();
+ if (!film || !content) {
+ return dcpomatic::Rect<int> ();
+ }
+
+ return dcpomatic::Rect<int> (
+ time_x (content->position ()) - 8,
+ y_pos (_track) - 8,
+ content->length_after_trim () * _timeline.pixels_per_time_unit() + 16,
+ _timeline.track_height() + 16
+ );
+ }
+
+ void set_selected (bool s) {
+ _selected = s;
+ force_redraw ();
+ }
+
+ bool selected () const {
+ return _selected;
+ }
+
+ shared_ptr<Content> content () const {
+ return _content.lock ();
+ }
+
+ void set_track (int t) {
+ _track = t;
+ }
+
+ int track () const {
+ return _track;
+ }
+
+ virtual wxString type () const = 0;
+ virtual wxColour colour () const = 0;
+
+private:
+
+ void do_paint (wxGraphicsContext* gc)
+ {
+ shared_ptr<const Film> film = _timeline.film ();
+ shared_ptr<const Content> cont = content ();
+ if (!film || !cont) {
+ return;
+ }
+
+ Time const position = cont->position ();
+ Time const len = cont->length_after_trim ();
+
+ wxColour selected (colour().Red() / 2, colour().Green() / 2, colour().Blue() / 2);
+
+ gc->SetPen (*wxBLACK_PEN);
+
+ gc->SetPen (*wxThePenList->FindOrCreatePen (wxColour (0, 0, 0), 4, wxPENSTYLE_SOLID));
+ if (_selected) {
+ gc->SetBrush (*wxTheBrushList->FindOrCreateBrush (selected, wxBRUSHSTYLE_SOLID));
+ } else {
+ gc->SetBrush (*wxTheBrushList->FindOrCreateBrush (colour(), wxBRUSHSTYLE_SOLID));
+ }
+
+ wxGraphicsPath path = gc->CreatePath ();
+ path.MoveToPoint (time_x (position), y_pos (_track) + 4);
+ path.AddLineToPoint (time_x (position + len), y_pos (_track) + 4);
+ path.AddLineToPoint (time_x (position + len), y_pos (_track + 1) - 4);
+ path.AddLineToPoint (time_x (position), y_pos (_track + 1) - 4);
+ path.AddLineToPoint (time_x (position), y_pos (_track) + 4);
+ gc->StrokePath (path);
+ gc->FillPath (path);
+
+ wxString name = wxString::Format (wxT ("%s [%s]"), std_to_wx (cont->path().filename().string()).data(), type().data());
+ wxDouble name_width;
+ wxDouble name_height;
+ wxDouble name_descent;
+ wxDouble name_leading;
+ gc->GetTextExtent (name, &name_width, &name_height, &name_descent, &name_leading);
+
+ gc->Clip (wxRegion (time_x (position), y_pos (_track), len * _timeline.pixels_per_time_unit(), _timeline.track_height()));
+ gc->DrawText (name, time_x (position) + 12, y_pos (_track + 1) - name_height - 4);
+ gc->ResetClip ();
+ }
+
+ int y_pos (int t) const
+ {
+ return _timeline.tracks_position().y + t * _timeline.track_height();
+ }
+
+ void content_changed (int p, bool frequent)
+ {
+ ensure_ui_thread ();
+
+ if (p == ContentProperty::POSITION || p == ContentProperty::LENGTH) {
+ force_redraw ();
+ }
+
+ if (!frequent) {
+ _timeline.setup_pixels_per_time_unit ();
+ _timeline.Refresh ();
+ }
+ }
+
+ boost::weak_ptr<Content> _content;
+ int _track;
+ bool _selected;
+
+ boost::signals2::scoped_connection _content_connection;
+};
+
+class AudioContentView : public ContentView
+{
+public:
+ AudioContentView (Timeline& tl, shared_ptr<Content> c)
+ : ContentView (tl, c)
+ {}
+
+private:
+ wxString type () const
+ {
+ return _("audio");
+ }
+
+ wxColour colour () const
+ {
+ return wxColour (149, 121, 232, 255);
+ }
+};
+
+class VideoContentView : public ContentView
+{
+public:
+ VideoContentView (Timeline& tl, shared_ptr<Content> c)
+ : ContentView (tl, c)
+ {}
+
+private:
+
+ wxString type () const
+ {
+ if (dynamic_pointer_cast<FFmpegContent> (content ())) {
+ return _("video");
+ } else {
+ return _("still");
+ }
+ }
+
+ wxColour colour () const
+ {
+ return wxColour (242, 92, 120, 255);
+ }
+};
+
+class TimeAxisView : public View
+{
+public:
+ TimeAxisView (Timeline& tl, int y)
+ : View (tl)
+ , _y (y)
+ {}
+
+ dcpomatic::Rect<int> bbox () const
+ {
+ return dcpomatic::Rect<int> (0, _y - 4, _timeline.width(), 24);
+ }
+
+ void set_y (int y)
+ {
+ _y = y;
+ force_redraw ();
+ }
+
+private:
+
+ void do_paint (wxGraphicsContext* gc)
+ {
+ gc->SetPen (*wxThePenList->FindOrCreatePen (wxColour (0, 0, 0), 1, wxPENSTYLE_SOLID));
+
+ int mark_interval = rint (128 / (TIME_HZ * _timeline.pixels_per_time_unit ()));
+ if (mark_interval > 5) {
+ mark_interval -= mark_interval % 5;
+ }
+ if (mark_interval > 10) {
+ mark_interval -= mark_interval % 10;
+ }
+ if (mark_interval > 60) {
+ mark_interval -= mark_interval % 60;
+ }
+ if (mark_interval > 3600) {
+ mark_interval -= mark_interval % 3600;
+ }
+
+ if (mark_interval < 1) {
+ mark_interval = 1;
+ }
+
+ wxGraphicsPath path = gc->CreatePath ();
+ path.MoveToPoint (_timeline.x_offset(), _y);
+ path.AddLineToPoint (_timeline.width(), _y);
+ gc->StrokePath (path);
+
+ Time t = 0;
+ while ((t * _timeline.pixels_per_time_unit()) < _timeline.width()) {
+ wxGraphicsPath path = gc->CreatePath ();
+ path.MoveToPoint (time_x (t), _y - 4);
+ path.AddLineToPoint (time_x (t), _y + 4);
+ gc->StrokePath (path);
+
+ int tc = t / TIME_HZ;
+ int const h = tc / 3600;
+ tc -= h * 3600;
+ int const m = tc / 60;
+ tc -= m * 60;
+ int const s = tc;
+
+ wxString str = wxString::Format (wxT ("%02d:%02d:%02d"), h, m, s);
+ wxDouble str_width;
+ wxDouble str_height;
+ wxDouble str_descent;
+ wxDouble str_leading;
+ gc->GetTextExtent (str, &str_width, &str_height, &str_descent, &str_leading);
+
+ int const tx = _timeline.x_offset() + t * _timeline.pixels_per_time_unit();
+ if ((tx + str_width) < _timeline.width()) {
+ gc->DrawText (str, time_x (t), _y + 16);
+ }
+
+ t += mark_interval * TIME_HZ;
+ }
+ }
+
+private:
+ int _y;
+};
+
+Timeline::Timeline (wxWindow* parent, FilmEditor* ed, shared_ptr<Film> film)
+ : wxPanel (parent, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxFULL_REPAINT_ON_RESIZE)
+ , _film_editor (ed)
+ , _film (film)
+ , _time_axis_view (new TimeAxisView (*this, 32))
+ , _tracks (0)
+ , _pixels_per_time_unit (0)
+ , _left_down (false)
+ , _down_view_position (0)
+ , _first_move (false)
+ , _menu (film, this)
+{
+#ifndef __WXOSX__
+ SetDoubleBuffered (true);
+#endif
+
+ Bind (wxEVT_PAINT, boost::bind (&Timeline::paint, this));
+ Bind (wxEVT_LEFT_DOWN, boost::bind (&Timeline::left_down, this, _1));
+ Bind (wxEVT_LEFT_UP, boost::bind (&Timeline::left_up, this, _1));
+ Bind (wxEVT_RIGHT_DOWN, boost::bind (&Timeline::right_down, this, _1));
+ Bind (wxEVT_MOTION, boost::bind (&Timeline::mouse_moved, this, _1));
+ Bind (wxEVT_SIZE, boost::bind (&Timeline::resized, this));
+
+ playlist_changed ();
+
+ SetMinSize (wxSize (640, tracks() * track_height() + 96));
+
+ _playlist_connection = film->playlist()->Changed.connect (bind (&Timeline::playlist_changed, this));
+}
+
+void
+Timeline::paint ()
+{
+ wxPaintDC dc (this);
+
+ wxGraphicsContext* gc = wxGraphicsContext::Create (dc);
+ if (!gc) {
+ return;
+ }
+
+ gc->SetFont (gc->CreateFont (*wxNORMAL_FONT));
+
+ for (ViewList::iterator i = _views.begin(); i != _views.end(); ++i) {
+ (*i)->paint (gc);
+ }
+
+ delete gc;
+}
+
+void
+Timeline::playlist_changed ()
+{
+ ensure_ui_thread ();
+
+ shared_ptr<const Film> fl = _film.lock ();
+ if (!fl) {
+ return;
+ }
+
+ _views.clear ();
+ _views.push_back (_time_axis_view);
+
+ ContentList content = fl->playlist()->content ();
+
+ for (ContentList::iterator i = content.begin(); i != content.end(); ++i) {
+ if (dynamic_pointer_cast<VideoContent> (*i)) {
+ _views.push_back (shared_ptr<View> (new VideoContentView (*this, *i)));
+ }
+ if (dynamic_pointer_cast<AudioContent> (*i)) {
+ _views.push_back (shared_ptr<View> (new AudioContentView (*this, *i)));
+ }
+ }
+
+ assign_tracks ();
+ setup_pixels_per_time_unit ();
+ Refresh ();
+}
+
+void
+Timeline::assign_tracks ()
+{
+ for (ViewList::iterator i = _views.begin(); i != _views.end(); ++i) {
+ shared_ptr<ContentView> cv = dynamic_pointer_cast<ContentView> (*i);
+ if (cv) {
+ cv->set_track (0);
+ _tracks = 1;
+ }
+ }
+
+ for (ViewList::iterator i = _views.begin(); i != _views.end(); ++i) {
+ shared_ptr<AudioContentView> acv = dynamic_pointer_cast<AudioContentView> (*i);
+ if (!acv) {
+ continue;
+ }
+
+ shared_ptr<Content> acv_content = acv->content();
+
+ int t = 1;
+ while (1) {
+ ViewList::iterator j = _views.begin();
+ while (j != _views.end()) {
+ shared_ptr<AudioContentView> test = dynamic_pointer_cast<AudioContentView> (*j);
+ if (!test) {
+ ++j;
+ continue;
+ }
+
+ shared_ptr<Content> test_content = test->content();
+
+ if (test && test->track() == t) {
+ bool const no_overlap =
+ (acv_content->position() < test_content->position() && acv_content->end() < test_content->position()) ||
+ (acv_content->position() > test_content->end() && acv_content->end() > test_content->end());
+
+ if (!no_overlap) {
+ /* we have an overlap on track `t' */
+ ++t;
+ break;
+ }
+ }
+
+ ++j;
+ }
+
+ if (j == _views.end ()) {
+ /* no overlap on `t' */
+ break;
+ }
+ }
+
+ acv->set_track (t);
+ _tracks = max (_tracks, t + 1);
+ }
+
+ _time_axis_view->set_y (tracks() * track_height() + 32);
+}
+
+int
+Timeline::tracks () const
+{
+ return _tracks;
+}
+
+void
+Timeline::setup_pixels_per_time_unit ()
+{
+ shared_ptr<const Film> film = _film.lock ();
+ if (!film) {
+ return;
+ }
+
+ _pixels_per_time_unit = static_cast<double>(width() - x_offset() * 2) / film->length ();
+}
+
+shared_ptr<View>
+Timeline::event_to_view (wxMouseEvent& ev)
+{
+ ViewList::iterator i = _views.begin();
+ Position<int> const p (ev.GetX(), ev.GetY());
+ while (i != _views.end() && !(*i)->bbox().contains (p)) {
+ ++i;
+ }
+
+ if (i == _views.end ()) {
+ return shared_ptr<View> ();
+ }
+
+ return *i;
+}
+
+void
+Timeline::left_down (wxMouseEvent& ev)
+{
+ shared_ptr<View> view = event_to_view (ev);
+ shared_ptr<ContentView> content_view = dynamic_pointer_cast<ContentView> (view);
+
+ _down_view.reset ();
+
+ if (content_view) {
+ _down_view = content_view;
+ _down_view_position = content_view->content()->position ();
+ }
+
+ for (ViewList::iterator i = _views.begin(); i != _views.end(); ++i) {
+ shared_ptr<ContentView> cv = dynamic_pointer_cast<ContentView> (*i);
+ if (!cv) {
+ continue;
+ }
+
+ if (!ev.ShiftDown ()) {
+ cv->set_selected (view == *i);
+ }
+
+ if (view == *i) {
+ _film_editor->set_selection (cv->content ());
+ }
+ }
+
+ if (content_view && ev.ShiftDown ()) {
+ content_view->set_selected (!content_view->selected ());
+ }
+
+ _left_down = true;
+ _down_point = ev.GetPosition ();
+ _first_move = false;
+
+ if (_down_view) {
+ _down_view->content()->set_change_signals_frequent (true);
+ }
+}
+
+void
+Timeline::left_up (wxMouseEvent& ev)
+{
+ _left_down = false;
+
+ if (_down_view) {
+ _down_view->content()->set_change_signals_frequent (false);
+ }
+
+ set_position_from_event (ev);
+}
+
+void
+Timeline::mouse_moved (wxMouseEvent& ev)
+{
+ if (!_left_down) {
+ return;
+ }
+
+ set_position_from_event (ev);
+}
+
+void
+Timeline::right_down (wxMouseEvent& ev)
+{
+ shared_ptr<View> view = event_to_view (ev);
+ shared_ptr<ContentView> cv = dynamic_pointer_cast<ContentView> (view);
+ if (!cv) {
+ return;
+ }
+
+ if (!cv->selected ()) {
+ clear_selection ();
+ cv->set_selected (true);
+ }
+
+ _menu.popup (selected_content (), ev.GetPosition ());
+}
+
+void
+Timeline::set_position_from_event (wxMouseEvent& ev)
+{
+ wxPoint const p = ev.GetPosition();
+
+ if (!_first_move) {
+ int const dist = sqrt (pow (p.x - _down_point.x, 2) + pow (p.y - _down_point.y, 2));
+ if (dist < 8) {
+ return;
+ }
+ _first_move = true;
+ }
+
+ Time const time_diff = (p.x - _down_point.x) / _pixels_per_time_unit;
+ if (_down_view) {
+ _down_view->content()->set_position (max (static_cast<Time> (0), _down_view_position + time_diff));
+
+ shared_ptr<Film> film = _film.lock ();
+ assert (film);
+ film->set_sequence_video (false);
+ }
+}
+
+void
+Timeline::force_redraw (dcpomatic::Rect<int> const & r)
+{
+ RefreshRect (wxRect (r.x, r.y, r.width, r.height), false);
+}
+
+shared_ptr<const Film>
+Timeline::film () const
+{
+ return _film.lock ();
+}
+
+void
+Timeline::resized ()
+{
+ setup_pixels_per_time_unit ();
+}
+
+void
+Timeline::clear_selection ()
+{
+ for (ViewList::iterator i = _views.begin(); i != _views.end(); ++i) {
+ shared_ptr<ContentView> cv = dynamic_pointer_cast<ContentView> (*i);
+ if (cv) {
+ cv->set_selected (false);
+ }
+ }
+}
+
+Timeline::ContentViewList
+Timeline::selected_views () const
+{
+ ContentViewList sel;
+
+ for (ViewList::const_iterator i = _views.begin(); i != _views.end(); ++i) {
+ shared_ptr<ContentView> cv = dynamic_pointer_cast<ContentView> (*i);
+ if (cv && cv->selected()) {
+ sel.push_back (cv);
+ }
+ }
+
+ return sel;
+}
+
+ContentList
+Timeline::selected_content () const
+{
+ ContentList sel;
+ ContentViewList views = selected_views ();
+
+ for (ContentViewList::const_iterator i = views.begin(); i != views.end(); ++i) {
+ sel.push_back ((*i)->content ());
+ }
+
+ return sel;
+}
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