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livetrax/gtk2_ardour/port_matrix_grid.cc

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/*
Copyright (C) 2002-2009 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 <iostream>
#include <cairo/cairo.h>
#include "ardour/bundle.h"
#include "ardour/types.h"
#include "port_matrix_grid.h"
#include "port_matrix.h"
#include "port_matrix_body.h"
PortMatrixGrid::PortMatrixGrid (PortMatrix* m, PortMatrixBody* b)
: PortMatrixComponent (m, b)
{
}
void
PortMatrixGrid::compute_dimensions ()
{
_width = 0;
ARDOUR::BundleList const c = _matrix->columns()->bundles();
for (ARDOUR::BundleList::const_iterator i = c.begin(); i != c.end(); ++i) {
_width += (*i)->nchannels() * column_width();
}
_height = 0;
ARDOUR::BundleList const r = _matrix->rows()->bundles();
for (ARDOUR::BundleList::const_iterator i = r.begin(); i != r.end(); ++i) {
_height += (*i)->nchannels() * row_height();
}
}
void
PortMatrixGrid::render (cairo_t* cr)
{
/* BACKGROUND */
set_source_rgb (cr, background_colour());
cairo_rectangle (cr, 0, 0, _width, _height);
cairo_fill (cr);
/* VERTICAL GRID LINES */
set_source_rgb (cr, grid_colour());
uint32_t x = 0;
ARDOUR::BundleList const c = _matrix->columns()->bundles();
for (ARDOUR::BundleList::size_type i = 0; i < c.size(); ++i) {
cairo_set_line_width (cr, thin_grid_line_width());
for (uint32_t j = 1; j < c[i]->nchannels(); ++j) {
x += column_width();
cairo_move_to (cr, x, 0);
cairo_line_to (cr, x, _height);
cairo_stroke (cr);
}
if (i < (c.size() - 1)) {
x += column_width();
cairo_set_line_width (cr, thick_grid_line_width());
cairo_move_to (cr, x, 0);
cairo_line_to (cr, x, _height);
cairo_stroke (cr);
}
}
uint32_t grid_width = x + column_width();
/* HORIZONTAL GRID LINES */
uint32_t y = 0;
ARDOUR::BundleList const r = _matrix->rows()->bundles();
for (ARDOUR::BundleList::size_type i = 0; i < r.size(); ++i) {
cairo_set_line_width (cr, thin_grid_line_width());
for (uint32_t j = 1; j < r[i]->nchannels(); ++j) {
y += row_height();
cairo_move_to (cr, 0, y);
cairo_line_to (cr, grid_width, y);
cairo_stroke (cr);
}
if (i < (r.size() - 1)) {
y += row_height();
cairo_set_line_width (cr, thick_grid_line_width());
cairo_move_to (cr, 0, y);
cairo_line_to (cr, grid_width, y);
cairo_stroke (cr);
}
}
/* ASSOCIATION INDICATORS */
uint32_t bx = 0;
uint32_t by = 0;
for (ARDOUR::BundleList::const_iterator i = c.begin(); i < c.end(); ++i) {
by = 0;
for (ARDOUR::BundleList::const_iterator j = r.begin(); j < r.end(); ++j) {
x = bx;
for (uint32_t k = 0; k < (*i)->nchannels (); k++) {
y = by;
for (uint32_t l = 0; l < (*j)->nchannels (); ++l) {
ARDOUR::BundleChannel c[2];
c[_matrix->column_index()] = ARDOUR::BundleChannel (*i, k);
c[_matrix->row_index()] = ARDOUR::BundleChannel (*j, l);
PortMatrix::State const s = _matrix->get_state (c);
switch (s) {
case PortMatrix::ASSOCIATED:
set_source_rgba (cr, association_colour(), 0.5);
cairo_arc (
cr,
x + column_width() / 2,
y + column_width() / 2,
(column_width() - (2 * connection_indicator_pad())) / 2,
0,
2 * M_PI
);
cairo_fill (cr);
break;
case PortMatrix::UNKNOWN:
set_source_rgba (cr, unknown_colour(), 0.5);
cairo_rectangle (
cr,
x + thick_grid_line_width(),
y + thick_grid_line_width(),
column_width() - 2 * thick_grid_line_width(),
row_height() - 2 * thick_grid_line_width()
);
cairo_fill (cr);
break;
case PortMatrix::NOT_ASSOCIATED:
break;
}
y += row_height();
}
x += column_width();
}
by += (*j)->nchannels () * row_height();
}
bx += (*i)->nchannels () * column_width();
}
}
PortMatrixNode
PortMatrixGrid::position_to_node (double x, double y) const
{
return PortMatrixNode (
position_to_channel (y, _matrix->rows()->bundles(), row_height()),
position_to_channel (x, _matrix->columns()->bundles(), column_width())
);
}
ARDOUR::BundleChannel
PortMatrixGrid::position_to_channel (double p, ARDOUR::BundleList const& bundles, double inc) const
{
uint32_t pos = p / inc;
for (ARDOUR::BundleList::const_iterator i = bundles.begin(); i != bundles.end(); ++i) {
if (pos < (*i)->nchannels()) {
return ARDOUR::BundleChannel (*i, pos);
} else {
pos -= (*i)->nchannels();
}
}
return ARDOUR::BundleChannel (boost::shared_ptr<ARDOUR::Bundle> (), 0);
}
double
PortMatrixGrid::channel_position (
ARDOUR::BundleChannel bc,
ARDOUR::BundleList const& bundles,
double inc) const
{
double p = 0;
ARDOUR::BundleList::const_iterator i = bundles.begin ();
while (i != bundles.end() && *i != bc.bundle) {
p += inc * (*i)->nchannels();
++i;
}
if (i == bundles.end()) {
return 0;
}
p += inc * bc.channel;
return p;
}
void
PortMatrixGrid::button_press (double x, double y, int b)
{
PortMatrixNode const node = position_to_node (x, y);
if (node.row.bundle && node.column.bundle) {
ARDOUR::BundleChannel c[2];
c[_matrix->row_index()] = node.row;
c[_matrix->column_index()] = node.column;
PortMatrix::State const s = _matrix->get_state (c);
if (s == PortMatrix::ASSOCIATED || s == PortMatrix::NOT_ASSOCIATED) {
bool const n = !(s == PortMatrix::ASSOCIATED);
ARDOUR::BundleChannel c[2];
c[_matrix->row_index()] = node.row;
c[_matrix->column_index()] = node.column;
_matrix->set_state (c, n);
}
require_render ();
_body->queue_draw ();
}
}
void
PortMatrixGrid::draw_extra (cairo_t* cr)
{
set_source_rgba (cr, mouseover_line_colour(), 0.3);
cairo_set_line_width (cr, mouseover_line_width());
double const x = component_to_parent_x (
channel_position (_body->mouseover().column, _matrix->columns()->bundles(), column_width()) + column_width() / 2
);
double const y = component_to_parent_y (
channel_position (_body->mouseover().row, _matrix->rows()->bundles(), row_height()) + row_height() / 2
);
if (_body->mouseover().row.bundle) {
cairo_move_to (cr, x, y);
if (_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM) {
cairo_line_to (cr, component_to_parent_x (0), y);
} else if (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT) {
cairo_line_to (cr, _parent_rectangle.get_x() + _parent_rectangle.get_width(), y);
}
cairo_stroke (cr);
}
if (_body->mouseover().column.bundle) {
cairo_move_to (cr, x, y);
if (_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM) {
cairo_line_to (cr, x, _parent_rectangle.get_y() + _parent_rectangle.get_height());
} else if (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT) {
cairo_line_to (cr, x, component_to_parent_y (0));
}
cairo_stroke (cr);
}
}
void
PortMatrixGrid::mouseover_changed (PortMatrixNode const& old)
{
queue_draw_for (old);
queue_draw_for (_body->mouseover());
}
void
PortMatrixGrid::mouseover_event (double x, double y)
{
_body->set_mouseover (position_to_node (x, y));
}
void
PortMatrixGrid::queue_draw_for (PortMatrixNode const &n)
{
if (n.row.bundle) {
double const y = channel_position (n.row, _matrix->rows()->bundles(), row_height());
_body->queue_draw_area (
_parent_rectangle.get_x(),
component_to_parent_y (y),
_parent_rectangle.get_width(),
row_height()
);
}
if (n.column.bundle) {
double const x = channel_position (n.column, _matrix->columns()->bundles(), column_width());
_body->queue_draw_area (
component_to_parent_x (x),
_parent_rectangle.get_y(),
column_width(),
_parent_rectangle.get_height()
);
}
}
double
PortMatrixGrid::component_to_parent_x (double x) const
{
return x - _body->xoffset() + _parent_rectangle.get_x();
}
double
PortMatrixGrid::parent_to_component_x (double x) const
{
return x + _body->xoffset() - _parent_rectangle.get_x();
}
double
PortMatrixGrid::component_to_parent_y (double y) const
{
return y - _body->yoffset() + _parent_rectangle.get_y();
}
double
PortMatrixGrid::parent_to_component_y (double y) const
{
return y + _body->yoffset() - _parent_rectangle.get_y();
}