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livetrax/gtk2_ardour/streamview.cc

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/*
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;
Large nasty commit in the form of a 5000 line patch chock-full of completely unecessary changes. (Sorry, doing a "sprint" based thing, this is the end of the first one) Achieved MIDI track and bus creation, associated Jack port and diskstream creation, and minimal GUI stuff for creating them. Should be set to start work on actually recording and playing midi to/from disk now. Relevant (significant) changes: - Creation of a Buffer class. Base class is type agnostic so things can point to a buffer but not care what kind it is (otherwise it'd be a template). Derived into AudioBuffer and MidiBuffer, with a type tag because checking type is necessary in parts of the code where dynamic_cast wouldn't be wise. Originally I considered this a hack, but passing around a type proved to be a very good solution to all the other problems (below). There is a 1:1 mapping between jack port data types and ardour Buffer types (with a conversion function), but that's easily removed if it ever becomes necessary. Having the type scoped in the Buffer class is maybe not the best spot for it, but whatever (this is proof of concept kinda stuff right now...) - IO now has a "default" port type (passed to the constructor and stored as a member), used by ensure_io (and similar) to create n ports. IO::register_***_port has a type argument that defaults to the default type if not passed. Rationale: previous IO API is identical, no changes needed to existing code, but path is paved for multiple port types in one IO, which we will need for eg synth plugin inserts, among other things. This is not quite ideal (best would be to only have the two port register functions and have them take a type), but the alternative is a lot of work (namely destroying the 'ensure' functions and everything that uses them) for very little gain. (I am convinced after quite a few tries at the whiteboard that subclassing IO in any way is not a feasible option, look at it's inheritance diagram in Doxygen and you can see why) - AudioEngine::register_audio_input_port is now register_input_port and takes a type argument. Ditto for output. - (Most significant change) AudioDiskstream abstracted into Distream, and sibling MidiDiskstream created. Very much still a work in progress, but Diskstream is there to switch references over to (most already are), which is the important part. It is still unclear what the MIDI diskstream's relation to channels is, but I'm pretty sure they will be single channel only (so SMF Type 0) since noone can come up with a reason otherwise. - MidiTrack creation. Same thing as AudioTrack but with a different default type basically. No big deal here. - Random cleanups and variable renamings etc. because I have OCD and can't help myself. :) Known broken: Loading of sessions containing MIDI tracks. git-svn-id: svn://localhost/ardour2/branches/midi@641 d708f5d6-7413-0410-9779-e7cbd77b26cf
2006-06-26 12:01:34 -04:00
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;
}
}
RegionViewRemoved (); /* EMIT SIGNAL */
}
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;
}
}