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livetrax/gtk2_ardour/streamview.cc
2010-12-02 15:51:42 +00:00

649 lines
16 KiB
C++

/*
Copyright (C) 2001, 2006 Paul Davis
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 <cmath>
#include <gtkmm.h>
#include <gtkmm2ext/gtk_ui.h>
#include <gtkmm2ext/utils.h>
#include "ardour/playlist.h"
#include "ardour/region.h"
#include "ardour/source.h"
#include "ardour/track.h"
#include "ardour/session.h"
#include "streamview.h"
#include "global_signals.h"
#include "region_view.h"
#include "route_time_axis.h"
#include "canvas-waveview.h"
#include "canvas-simplerect.h"
#include "region_selection.h"
#include "selection.h"
#include "public_editor.h"
#include "ardour_ui.h"
#include "rgb_macros.h"
#include "gui_thread.h"
#include "utils.h"
using namespace std;
using namespace ARDOUR;
using namespace PBD;
using namespace Editing;
StreamView::StreamView (RouteTimeAxisView& tv, ArdourCanvas::Group* background_group, ArdourCanvas::Group* canvas_group)
: _trackview (tv)
, owns_background_group (background_group == 0)
, owns_canvas_group (canvas_group == 0)
, _background_group (background_group ? background_group : new ArdourCanvas::Group (*_trackview.canvas_background()))
, _canvas_group (canvas_group ? canvas_group : new ArdourCanvas::Group(*_trackview.canvas_display()))
, _samples_per_unit (_trackview.editor().get_current_zoom ())
, rec_updating(false)
, rec_active(false)
, region_color(_trackview.color())
, stream_base_color(0xFFFFFFFF)
, _layers (1)
, _layer_display (Overlaid)
, height(tv.height)
, last_rec_data_frame(0)
{
/* set_position() will position the group */
canvas_rect = new ArdourCanvas::SimpleRect (*_background_group);
canvas_rect->property_x1() = 0.0;
canvas_rect->property_y1() = 0.0;
canvas_rect->property_x2() = Gtkmm2ext::physical_screen_width (_trackview.editor().get_window());
canvas_rect->property_y2() = (double) tv.current_height();
canvas_rect->raise(1); // raise above tempo lines
canvas_rect->property_outline_what() = (guint32) (0x2|0x8); // outline RHS and bottom
canvas_rect->signal_event().connect (sigc::bind (
sigc::mem_fun (_trackview.editor(), &PublicEditor::canvas_stream_view_event),
canvas_rect, &_trackview));
if (_trackview.is_track()) {
_trackview.track()->DiskstreamChanged.connect (*this, invalidator (*this), boost::bind (&StreamView::diskstream_changed, this), gui_context());
_trackview.track()->RecordEnableChanged.connect (*this, invalidator (*this), boost::bind (&StreamView::rec_enable_changed, this), gui_context());
_trackview.session()->TransportStateChange.connect (*this, invalidator (*this), boost::bind (&StreamView::transport_changed, this), gui_context());
_trackview.session()->TransportLooped.connect (*this, invalidator (*this), boost::bind (&StreamView::transport_looped, this), gui_context());
_trackview.session()->RecordStateChanged.connect (*this, invalidator (*this), boost::bind (&StreamView::sess_rec_enable_changed, this), gui_context());
}
ColorsChanged.connect (sigc::mem_fun (*this, &StreamView::color_handler));
}
StreamView::~StreamView ()
{
undisplay_track ();
delete canvas_rect;
if (owns_background_group) {
delete _background_group;
}
if (owns_canvas_group) {
delete _canvas_group;
}
}
void
StreamView::attach ()
{
if (_trackview.is_track()) {
display_track (_trackview.track ());
}
}
int
StreamView::set_position (gdouble x, gdouble y)
{
_canvas_group->property_x() = x;
_canvas_group->property_y() = y;
return 0;
}
int
StreamView::set_height (double h)
{
/* limit the values to something sane-ish */
if (h < 10.0 || h > 1000.0) {
return -1;
}
if (canvas_rect->property_y2() == h) {
return 0;
}
height = h;
canvas_rect->property_y2() = height;
update_contents_height ();
return 0;
}
int
StreamView::set_samples_per_unit (gdouble spp)
{
RegionViewList::iterator i;
if (spp < 1.0) {
return -1;
}
_samples_per_unit = spp;
for (i = region_views.begin(); i != region_views.end(); ++i) {
(*i)->set_samples_per_unit (spp);
}
for (vector<RecBoxInfo>::iterator xi = rec_rects.begin(); xi != rec_rects.end(); ++xi) {
RecBoxInfo &recbox = (*xi);
gdouble xstart = _trackview.editor().frame_to_pixel (recbox.start);
gdouble xend = _trackview.editor().frame_to_pixel (recbox.start + recbox.length);
recbox.rectangle->property_x1() = xstart;
recbox.rectangle->property_x2() = xend;
}
update_coverage_frames ();
return 0;
}
void
StreamView::add_region_view (boost::weak_ptr<Region> wr)
{
boost::shared_ptr<Region> r (wr.lock());
if (!r) {
return;
}
add_region_view_internal (r, true);
if (_layer_display == Stacked) {
update_contents_height ();
}
}
void
StreamView::remove_region_view (boost::weak_ptr<Region> weak_r)
{
ENSURE_GUI_THREAD (*this, &StreamView::remove_region_view, weak_r)
boost::shared_ptr<Region> r (weak_r.lock());
if (!r) {
return;
}
for (list<RegionView *>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
if (((*i)->region()) == r) {
RegionView* rv = *i;
region_views.erase (i);
delete rv;
break;
}
}
}
void
StreamView::undisplay_track ()
{
for (RegionViewList::iterator i = region_views.begin(); i != region_views.end() ; ) {
RegionViewList::iterator next = i;
++next;
delete *i;
i = next;
}
region_views.clear();
}
void
StreamView::display_track (boost::shared_ptr<Track> tr)
{
playlist_switched_connection.disconnect();
playlist_switched (tr);
tr->PlaylistChanged.connect (playlist_switched_connection, invalidator (*this), boost::bind (&StreamView::playlist_switched, this, boost::weak_ptr<Track> (tr)), gui_context());
}
void
StreamView::layer_regions()
{
// In one traversal of the region view list:
// - Build a list of region views sorted by layer
// - Remove invalid views from the actual region view list
RegionViewList copy;
list<RegionView*>::iterator i, tmp;
for (i = region_views.begin(); i != region_views.end(); ) {
tmp = i;
tmp++;
if (!(*i)->is_valid()) {
delete *i;
region_views.erase (i);
i = tmp;
continue;
} else {
(*i)->enable_display(true);
}
if (copy.size() == 0) {
copy.push_front((*i));
i = tmp;
continue;
}
RegionViewList::iterator k = copy.begin();
RegionViewList::iterator l = copy.end();
l--;
if ((*i)->region()->layer() <= (*k)->region()->layer()) {
copy.push_front((*i));
i = tmp;
continue;
} else if ((*i)->region()->layer() >= (*l)->region()->layer()) {
copy.push_back((*i));
i = tmp;
continue;
}
for (RegionViewList::iterator j = copy.begin(); j != copy.end(); ++j) {
if ((*j)->region()->layer() >= (*i)->region()->layer()) {
copy.insert(j, (*i));
break;
}
}
i = tmp;
}
// Fix canvas layering by raising each to the top in the sorted order.
for (RegionViewList::iterator i = copy.begin(); i != copy.end(); ++i) {
(*i)->get_canvas_group()->raise_to_top ();
}
}
void
StreamView::playlist_layered (boost::weak_ptr<Track> wtr)
{
boost::shared_ptr<Track> tr (wtr.lock());
if (!tr) {
return;
}
/* update layers count and the y positions and heights of our regions */
if (tr->playlist()) {
_layers = tr->playlist()->top_layer() + 1;
}
if (_layer_display == Stacked) {
update_contents_height ();
update_coverage_frames ();
} else {
/* layering has probably been modified. reflect this in the canvas. */
layer_regions();
}
}
void
StreamView::playlist_switched (boost::weak_ptr<Track> wtr)
{
boost::shared_ptr<Track> tr (wtr.lock());
if (!tr) {
return;
}
/* disconnect from old playlist */
playlist_connections.drop_connections ();
undisplay_track ();
/* update layers count and the y positions and heights of our regions */
_layers = tr->playlist()->top_layer() + 1;
update_contents_height ();
update_coverage_frames ();
tr->playlist()->set_explicit_relayering (_layer_display == Stacked);
/* draw it */
redisplay_track ();
/* catch changes */
tr->playlist()->LayeringChanged.connect (playlist_connections, invalidator (*this), boost::bind (&StreamView::playlist_layered, this, boost::weak_ptr<Track> (tr)), gui_context());
tr->playlist()->RegionAdded.connect (playlist_connections, invalidator (*this), ui_bind (&StreamView::add_region_view, this, _1), gui_context());
tr->playlist()->RegionRemoved.connect (playlist_connections, invalidator (*this), ui_bind (&StreamView::remove_region_view, this, _1), gui_context());
tr->playlist()->ContentsChanged.connect (playlist_connections, invalidator (*this), ui_bind (&StreamView::update_coverage_frames, this), gui_context());
}
void
StreamView::diskstream_changed ()
{
boost::shared_ptr<Track> t;
if ((t = _trackview.track()) != 0) {
Gtkmm2ext::UI::instance()->call_slot (invalidator (*this), boost::bind (&StreamView::display_track, this, t));
} else {
Gtkmm2ext::UI::instance()->call_slot (invalidator (*this), boost::bind (&StreamView::undisplay_track, this));
}
}
void
StreamView::apply_color (Gdk::Color& color, ColorTarget target)
{
list<RegionView *>::iterator i;
switch (target) {
case RegionColor:
region_color = color;
for (i = region_views.begin(); i != region_views.end(); ++i) {
(*i)->set_color (region_color);
}
break;
case StreamBaseColor:
stream_base_color = RGBA_TO_UINT (
color.get_red_p(), color.get_green_p(), color.get_blue_p(), 255);
canvas_rect->property_fill_color_rgba() = stream_base_color;
break;
}
}
void
StreamView::region_layered (RegionView* rv)
{
/* don't ever leave it at the bottom, since then it doesn't
get events - the parent group does instead ...
*/
rv->get_canvas_group()->raise (rv->region()->layer());
}
void
StreamView::rec_enable_changed ()
{
setup_rec_box ();
}
void
StreamView::sess_rec_enable_changed ()
{
setup_rec_box ();
}
void
StreamView::transport_changed()
{
setup_rec_box ();
}
void
StreamView::transport_looped()
{
// to force a new rec region
rec_active = false;
Gtkmm2ext::UI::instance()->call_slot (invalidator (*this), boost::bind (&StreamView::setup_rec_box, this));
}
void
StreamView::update_rec_box ()
{
if (rec_active && rec_rects.size() > 0) {
/* only update the last box */
RecBoxInfo & rect = rec_rects.back();
framepos_t const at = _trackview.track()->current_capture_end ();
double xstart;
double xend;
switch (_trackview.track()->mode()) {
case NonLayered:
case Normal:
rect.length = at - rect.start;
xstart = _trackview.editor().frame_to_pixel (rect.start);
xend = _trackview.editor().frame_to_pixel (at);
break;
case Destructive:
rect.length = 2;
xstart = _trackview.editor().frame_to_pixel (_trackview.track()->current_capture_start());
xend = _trackview.editor().frame_to_pixel (at);
break;
}
rect.rectangle->property_x1() = xstart;
rect.rectangle->property_x2() = xend;
}
}
RegionView*
StreamView::find_view (boost::shared_ptr<const Region> region)
{
for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
if ((*i)->region() == region) {
return *i;
}
}
return 0;
}
uint32_t
StreamView::num_selected_regionviews () const
{
uint32_t cnt = 0;
for (list<RegionView*>::const_iterator i = region_views.begin(); i != region_views.end(); ++i) {
if ((*i)->get_selected()) {
++cnt;
}
}
return cnt;
}
void
StreamView::foreach_regionview (sigc::slot<void,RegionView*> slot)
{
for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
slot (*i);
}
}
void
StreamView::foreach_selected_regionview (sigc::slot<void,RegionView*> slot)
{
for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
if ((*i)->get_selected()) {
slot (*i);
}
}
}
void
StreamView::set_selected_regionviews (RegionSelection& regions)
{
bool selected;
for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
selected = false;
for (RegionSelection::iterator ii = regions.begin(); ii != regions.end(); ++ii) {
if (*i == *ii) {
selected = true;
break;
}
}
(*i)->set_selected (selected);
}
}
/** Get selectable things within a given range.
* @param start Start time in session frames.
* @param end End time in session frames.
* @param top Top y range, in trackview coordinates (ie 0 is the top of the track view)
* @param bot Bottom y range, in trackview coordinates (ie 0 is the top of the track view)
* @param result Filled in with selectable things.
*/
void
StreamView::get_selectables (framepos_t start, framepos_t end, double top, double bottom, list<Selectable*>& results)
{
layer_t min_layer = 0;
layer_t max_layer = 0;
if (_layer_display == Stacked) {
double const c = child_height ();
min_layer = _layers - ((bottom - _trackview.y_position()) / c);
max_layer = _layers - ((top - _trackview.y_position()) / c);
}
for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
bool layer_ok = true;
if (_layer_display == Stacked) {
layer_t const l = (*i)->region()->layer ();
layer_ok = (min_layer <= l && l <= max_layer);
}
if ((*i)->region()->coverage (start, end) != OverlapNone && layer_ok) {
results.push_back (*i);
}
}
}
void
StreamView::get_inverted_selectables (Selection& sel, list<Selectable*>& results)
{
for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
if (!sel.regions.contains (*i)) {
results.push_back (*i);
}
}
}
/** @return height of a child region view, depending on stacked / overlaid mode */
double
StreamView::child_height () const
{
if (_layer_display == Stacked) {
return height / _layers;
}
return height;
}
void
StreamView::update_contents_height ()
{
const double h = child_height ();
for (RegionViewList::iterator i = region_views.begin(); i != region_views.end(); ++i) {
switch (_layer_display) {
case Overlaid:
(*i)->set_y (0);
break;
case Stacked:
(*i)->set_y (height - ((*i)->region()->layer() + 1) * h);
break;
}
(*i)->set_height (h);
}
for (vector<RecBoxInfo>::iterator i = rec_rects.begin(); i != rec_rects.end(); ++i) {
switch (_layer_display) {
case Overlaid:
i->rectangle->property_y2() = height;
break;
case Stacked:
/* In stacked displays, the recregion is always at the top */
i->rectangle->property_y1() = 0;
i->rectangle->property_y2() = h;
break;
}
}
}
void
StreamView::set_layer_display (LayerDisplay d)
{
_layer_display = d;
update_contents_height ();
update_coverage_frames ();
_trackview.track()->playlist()->set_explicit_relayering (_layer_display == Stacked);
}
void
StreamView::update_coverage_frames ()
{
for (RegionViewList::iterator i = region_views.begin (); i != region_views.end (); ++i) {
(*i)->update_coverage_frames (_layer_display);
}
}
void
StreamView::check_record_layers (boost::shared_ptr<Region> region, framepos_t to)
{
if (_new_rec_layer_time < to) {
/* The region being recorded has overlapped the start of a top-layered region, so
`fake' a new visual layer for the recording. This is only a visual thing for now,
as the proper layering will get sorted out when the recorded region is added to
its playlist.
*/
/* Stop this happening again */
_new_rec_layer_time = max_framepos;
/* Make space in the view for the new layer */
++_layers;
/* Set the temporary region to the correct layer so that it gets drawn correctly */
region->set_layer (_layers - 1);
/* and reset the view */
update_contents_height ();
}
}
void
StreamView::setup_new_rec_layer_time (boost::shared_ptr<Region> region)
{
/* If we are in Stacked mode, we may need to (visually) create a new layer to put the
recorded region in. To work out where this needs to happen, find the start of the next
top-layered region after the start of the region we are recording and make a note of it.
*/
if (_layer_display == Stacked) {
_new_rec_layer_time = _trackview.track()->playlist()->find_next_top_layer_position (region->start());
} else {
_new_rec_layer_time = max_framepos;
}
}