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livetrax/gtk2_ardour/port_matrix_component.cc
Robin Gareus 4050ca5633
Update GPL boilerplate and (C)
Copyright-holder and year information is extracted from git log.

git history begins in 2005. So (C) from 1998..2005 is lost. Also some
(C) assignment of commits where the committer didn't use --author.
2019-08-03 15:53:15 +02:00

218 lines
5.2 KiB
C++

/*
* Copyright (C) 2009-2010 Paul Davis <paul@linuxaudiosystems.com>
* Copyright (C) 2009-2011 Carl Hetherington <carl@carlh.net>
* Copyright (C) 2009-2011 David Robillard <d@drobilla.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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "port_matrix_component.h"
#include "port_matrix.h"
#include "port_matrix_body.h"
using namespace std;
/** Constructor.
* @param m Port matrix that we're in.
* @param b Port matrix body that we're in.
*/
PortMatrixComponent::PortMatrixComponent (PortMatrix* m, PortMatrixBody* b)
: _matrix (m),
_body (b),
_pixmap (0),
_render_required (true),
_dimension_computation_required (true)
{
}
/** Destructor */
PortMatrixComponent::~PortMatrixComponent ()
{
if (_pixmap) {
g_object_unref (_pixmap);
}
}
void
PortMatrixComponent::setup ()
{
_dimension_computation_required = true;
_render_required = true;
}
GdkPixmap *
PortMatrixComponent::get_pixmap (GdkDrawable *drawable)
{
if (_render_required) {
if (_dimension_computation_required) {
compute_dimensions ();
_dimension_computation_required = false;
_body->component_size_changed ();
}
/* we may be zero width or height; if so, just
use the smallest allowable pixmap */
if (_width == 0) {
_width = 1;
}
if (_height == 0) {
_height = 1;
}
/* make a pixmap of the right size */
if (_pixmap) {
g_object_unref (_pixmap);
}
_pixmap = gdk_pixmap_new (drawable, _width, _height, -1);
/* render */
cairo_t* cr = gdk_cairo_create (_pixmap);
render (cr);
cairo_destroy (cr);
_render_required = false;
}
return _pixmap;
}
void
PortMatrixComponent::set_source_rgb (cairo_t *cr, Gdk::Color const & c)
{
cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
}
void
PortMatrixComponent::set_source_rgba (cairo_t *cr, Gdk::Color const & c, double a)
{
cairo_set_source_rgba (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p(), a);
}
pair<uint32_t, uint32_t>
PortMatrixComponent::dimensions ()
{
if (_dimension_computation_required) {
compute_dimensions ();
_dimension_computation_required = false;
_body->component_size_changed ();
}
return make_pair (_width, _height);
}
Gdk::Color
PortMatrixComponent::background_colour ()
{
return _matrix->get_style()->get_bg (Gtk::STATE_NORMAL);
}
/** @param g Group.
* @return Visible size of the group in grid units, taking visibility and show_only_bundles into account.
*/
uint32_t
PortMatrixComponent::group_size (boost::shared_ptr<const PortGroup> g) const
{
uint32_t s = 0;
PortGroup::BundleList const & bundles = g->bundles ();
if (_matrix->show_only_bundles()) {
s = bundles.size();
} else {
for (PortGroup::BundleList::const_iterator i = bundles.begin(); i != bundles.end(); ++i) {
s += _matrix->count_of_our_type_min_1 ((*i)->bundle->nchannels());
}
}
return s;
}
/** @param bc Channel.
* @param group Group.
* @return Position of bc in groups in grid units, taking show_only_bundles into account.
*/
uint32_t
PortMatrixComponent::channel_to_position (ARDOUR::BundleChannel bc, boost::shared_ptr<const PortGroup> group) const
{
uint32_t p = 0;
PortGroup::BundleList const & bundles = group->bundles ();
for (PortGroup::BundleList::const_iterator i = bundles.begin(); i != bundles.end(); ++i) {
if ((*i)->bundle == bc.bundle) {
/* found the bundle */
if (_matrix->show_only_bundles()) {
return p;
} else {
return p + bc.bundle->overall_channel_to_type (_matrix->type (), bc.channel);
}
}
/* move past this bundle */
if (_matrix->show_only_bundles()) {
p += 1;
} else {
p += _matrix->count_of_our_type_min_1 ((*i)->bundle->nchannels());
}
}
return 0;
}
ARDOUR::BundleChannel
PortMatrixComponent::position_to_channel (double p, double, boost::shared_ptr<const PortGroup> group) const
{
p /= grid_spacing ();
PortGroup::BundleList const & bundles = group->bundles ();
for (PortGroup::BundleList::const_iterator j = bundles.begin(); j != bundles.end(); ++j) {
if (_matrix->show_only_bundles()) {
if (p < 1) {
return ARDOUR::BundleChannel ((*j)->bundle, -1);
} else {
p -= 1;
}
} else {
ARDOUR::ChanCount const N = (*j)->bundle->nchannels ();
uint32_t const s = _matrix->count_of_our_type_min_1 (N);
if (p < s) {
if (p < _matrix->count_of_our_type (N)) {
return ARDOUR::BundleChannel ((*j)->bundle, (*j)->bundle->type_channel_to_overall (_matrix->type (), p));
} else {
return ARDOUR::BundleChannel (boost::shared_ptr<ARDOUR::Bundle> (), -1);
}
} else {
p -= s;
}
}
}
return ARDOUR::BundleChannel (boost::shared_ptr<ARDOUR::Bundle> (), -1);
}