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livetrax/gtk2_ardour/streamview.cc
Carl Hetherington f2058a3f87 Comment and (hopefully) simplify Editor::region_drag_motion_callback, fixing problems with dragging regions
to and from tracks in "stacked" display mode.  As a side-effect, enable dragging of regions between layers,
though I'm not entirely sure where this is useful or desirable just yet; dragging regions between layers
currently works in the GUI but has no effect on the model.


git-svn-id: svn://localhost/ardour2/branches/3.0@4389 d708f5d6-7413-0410-9779-e7cbd77b26cf
2009-01-06 03:18:09 +00:00

480 lines
12 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 <ardour/playlist.h>
#include <ardour/region.h>
#include <ardour/source.h>
#include <ardour/diskstream.h>
#include <ardour/track.h>
#include "streamview.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 ARDOUR;
using namespace PBD;
using namespace Editing;
StreamView::StreamView (RouteTimeAxisView& tv, ArdourCanvas::Group* group)
: _trackview (tv)
, owns_canvas_group(group == 0)
, _background_group (new ArdourCanvas::Group (*_trackview.canvas_background()))
, canvas_group(group ? group : new ArdourCanvas::Group(*_trackview.canvas_display()))
, _samples_per_unit (_trackview.editor().get_current_zoom ())
, rec_updating(false)
, rec_active(false)
, use_rec_regions (tv.editor().show_waveforms_recording ())
, region_color(_trackview.color())
, stream_base_color(0xFFFFFFFF)
, _layers (1)
, height(tv.height)
, _layer_display (Overlaid)
, 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() = _trackview.editor().get_physical_screen_width ();
canvas_rect->property_y2() = (double) tv.current_height();
canvas_rect->raise(1); // raise above tempo lines
// DR-way
canvas_rect->property_outline_what() = (guint32) (0x2|0x8); // outline RHS and bottom
// 2.0 way
//canvas_rect->property_outline_what() = (guint32) (0x1|0x2|0x8); // outline ends and bottom
// (Fill/Outline colours set in derived classes)
canvas_rect->signal_event().connect (bind (mem_fun (_trackview.editor(), &PublicEditor::canvas_stream_view_event), canvas_rect, &_trackview));
if (_trackview.is_track()) {
_trackview.track()->DiskstreamChanged.connect (mem_fun (*this, &StreamView::diskstream_changed));
_trackview.session().TransportStateChange.connect (mem_fun (*this, &StreamView::transport_changed));
_trackview.session().TransportLooped.connect (mem_fun (*this, &StreamView::transport_looped));
_trackview.get_diskstream()->RecordEnableChanged.connect (mem_fun (*this, &StreamView::rec_enable_changed));
_trackview.session().RecordStateChanged.connect (mem_fun (*this, &StreamView::sess_rec_enable_changed));
}
ColorsChanged.connect (mem_fun (*this, &StreamView::color_handler));
}
StreamView::~StreamView ()
{
undisplay_diskstream ();
delete canvas_rect;
if (owns_canvas_group) {
delete canvas_group;
}
}
void
StreamView::attach ()
{
if (_trackview.is_track()) {
display_diskstream (_trackview.get_diskstream());
}
}
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;
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::shared_ptr<Region> r)
{
// ENSURE_GUI_THREAD (bind (mem_fun (*this, &AudioStreamView::add_region_view), r));
add_region_view_internal (r, true);
update_contents_height ();
}
void
StreamView::remove_region_view (boost::weak_ptr<Region> weak_r)
{
ENSURE_GUI_THREAD (bind (mem_fun (*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_diskstream ()
{
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_diskstream (boost::shared_ptr<Diskstream> ds)
{
playlist_change_connection.disconnect();
playlist_changed (ds);
playlist_change_connection = ds->PlaylistChanged.connect (bind (mem_fun (*this, &StreamView::playlist_changed), ds));
}
void
StreamView::playlist_modified_weak (boost::weak_ptr<Diskstream> ds)
{
boost::shared_ptr<Diskstream> sp (ds.lock());
if (!sp) {
return;
}
playlist_modified (sp);
}
void
StreamView::playlist_modified (boost::shared_ptr<Diskstream> ds)
{
/* we do not allow shared_ptr<T> to be bound to slots */
ENSURE_GUI_THREAD (bind (mem_fun (*this, &StreamView::playlist_modified_weak), ds));
/* update layers count and the y positions and heights of our regions */
if (ds->playlist()) {
_layers = ds->playlist()->top_layer() + 1;
update_contents_height ();
update_coverage_frames ();
redisplay_diskstream ();
}
}
void
StreamView::playlist_changed (boost::shared_ptr<Diskstream> ds)
{
/* XXX: binding to a shared_ptr, is this ok? */
ENSURE_GUI_THREAD (bind (mem_fun (*this, &StreamView::playlist_changed), ds));
/* disconnect from old playlist */
for (vector<sigc::connection>::iterator i = playlist_connections.begin(); i != playlist_connections.end(); ++i) {
(*i).disconnect();
}
playlist_connections.clear();
undisplay_diskstream ();
/* update layers count and the y positions and heights of our regions */
_layers = ds->playlist()->top_layer() + 1;
update_contents_height ();
update_coverage_frames ();
/* draw it */
redisplay_diskstream ();
/* catch changes */
playlist_connections.push_back (ds->playlist()->Modified.connect (bind (mem_fun (*this, &StreamView::playlist_modified_weak), ds)));
}
void
StreamView::diskstream_changed ()
{
boost::shared_ptr<Track> t;
if ((t = _trackview.track()) != 0) {
Gtkmm2ext::UI::instance()->call_slot (bind (mem_fun (*this, &StreamView::display_diskstream), t->diskstream()));
} else {
Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::undisplay_diskstream));
}
}
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 ()
{
Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::setup_rec_box));
}
void
StreamView::sess_rec_enable_changed ()
{
Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::setup_rec_box));
}
void
StreamView::transport_changed()
{
Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::setup_rec_box));
}
void
StreamView::transport_looped()
{
// to force a new rec region
rec_active = false;
Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::setup_rec_box));
}
void
StreamView::update_rec_box ()
{
if (rec_active && rec_rects.size() > 0) {
/* only update the last box */
RecBoxInfo & rect = rec_rects.back();
nframes_t at = _trackview.get_diskstream()->current_capture_end();
double xstart;
double xend;
switch (_trackview.track()->mode()) {
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.get_diskstream()->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;
}
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::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;
}
}
(*i)->set_selected (selected);
}
}
void
StreamView::get_selectables (nframes_t start, nframes_t end, list<Selectable*>& results)
{
for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
if ((*i)->region()->coverage(start, end) != OverlapNone) {
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 ()
{
canvas_rect->property_y2() = 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) {
i->rectangle->property_y2() = height - 1.0;
}
}
void
StreamView::set_layer_display (LayerDisplay d)
{
_layer_display = d;
update_contents_height ();
update_coverage_frames ();
}
void
StreamView::update_coverage_frames ()
{
for (RegionViewList::iterator i = region_views.begin (); i != region_views.end (); ++i) {
(*i)->update_coverage_frames (_layer_display);
}
}