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ardour/gtk2_ardour/port_matrix_grid.cc

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/*
* Copyright (C) 2009-2011 Carl Hetherington <carl@carlh.net>
* Copyright (C) 2009-2012 David Robillard <d@drobilla.net>
* Copyright (C) 2009-2013 Paul Davis <paul@linuxaudiosystems.com>
*
* 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 <iostream>
#include <cairo.h>
#include "ardour/bundle.h"
#include "port_matrix_grid.h"
#include "port_matrix.h"
#include "port_matrix_body.h"
#include "keyboard.h"
using namespace std;
using Gtkmm2ext::Keyboard;
PortMatrixGrid::PortMatrixGrid (PortMatrix* m, PortMatrixBody* b)
: PortMatrixComponent (m, b),
_dragging (false),
_drag_valid (false),
_moved (false)
{
}
void
PortMatrixGrid::compute_dimensions ()
{
if (_matrix->visible_columns()) {
_width = group_size (_matrix->visible_columns()) * grid_spacing ();
} else {
_width = 0;
}
if (_matrix->visible_rows()) {
_height = group_size (_matrix->visible_rows()) * grid_spacing ();
} else {
_height = 0;
}
}
void
PortMatrixGrid::render (cairo_t* cr)
{
set_source_rgb (cr, background_colour());
cairo_rectangle (cr, 0, 0, _width, _height);
cairo_fill (cr);
PortGroup::BundleList const & row_bundles = _matrix->visible_rows()->bundles();
PortGroup::BundleList const & column_bundles = _matrix->visible_columns()->bundles();
uint32_t x = 0;
/* VERTICAL GRID LINES */
set_source_rgb (cr, grid_colour());
uint32_t N = 0;
for (PortGroup::BundleList::const_iterator i = column_bundles.begin(); i != column_bundles.end(); ++i) {
cairo_set_line_width (cr, thick_grid_line_width());
cairo_move_to (cr, x, 0);
cairo_line_to (cr, x, _height);
cairo_stroke (cr);
if (!_matrix->show_only_bundles()) {
cairo_set_line_width (cr, thin_grid_line_width());
for (uint32_t j = 0; j < _matrix->count_of_our_type_min_1 ((*i)->bundle->nchannels()); ++j) {
x += grid_spacing ();
cairo_move_to (cr, x, 0);
cairo_line_to (cr, x, _height);
cairo_stroke (cr);
}
} else {
x += grid_spacing ();
}
++N;
}
if (_matrix->show_only_bundles ()) {
cairo_move_to (cr, x, 0);
cairo_line_to (cr, x, _height);
cairo_stroke (cr);
}
uint32_t y = 0;
/* HORIZONTAL GRID LINES */
N = 0;
for (PortGroup::BundleList::const_iterator i = row_bundles.begin(); i != row_bundles.end(); ++i) {
cairo_set_line_width (cr, thick_grid_line_width());
cairo_move_to (cr, 0, y);
cairo_line_to (cr, _width, y);
cairo_stroke (cr);
if (!_matrix->show_only_bundles()) {
cairo_set_line_width (cr, thin_grid_line_width());
for (uint32_t j = 0; j < _matrix->count_of_our_type_min_1 ((*i)->bundle->nchannels()); ++j) {
y += grid_spacing ();
cairo_move_to (cr, 0, y);
cairo_line_to (cr, _width, y);
cairo_stroke (cr);
}
} else {
y += grid_spacing ();
}
++N;
}
if (_matrix->show_only_bundles ()) {
cairo_move_to (cr, 0, y);
cairo_line_to (cr, _width, y);
cairo_stroke (cr);
}
/* ASSOCIATION INDICATORS and NON-CONNECTABLE INDICATORS */
/* we draw a grey square in a matrix box if the two ports that intersect at that box
cannot be connected because they are of different types (MIDI vs. audio)
*/
uint32_t bx = 0;
uint32_t by = 0;
if (_matrix->show_only_bundles()) {
for (PortGroup::BundleList::const_iterator i = column_bundles.begin(); i != column_bundles.end(); ++i) {
by = 0;
for (PortGroup::BundleList::const_iterator j = row_bundles.begin(); j != row_bundles.end(); ++j) {
PortMatrixNode::State s = _matrix->get_association (PortMatrixNode (
ARDOUR::BundleChannel ((*j)->bundle, 0),
ARDOUR::BundleChannel ((*i)->bundle, 0)
));
switch (s) {
case PortMatrixNode::ASSOCIATED:
draw_association_indicator (cr, bx, by);
break;
case PortMatrixNode::PARTIAL:
draw_association_indicator (cr, bx, by, 0.5);
break;
default:
break;
}
by += grid_spacing();
}
bx += grid_spacing();
}
} else {
for (PortGroup::BundleList::const_iterator i = column_bundles.begin(); i != column_bundles.end(); ++i) {
by = 0;
for (PortGroup::BundleList::const_iterator j = row_bundles.begin(); j != row_bundles.end(); ++j) {
x = bx;
for (uint32_t k = 0; k < _matrix->count_of_our_type ((*i)->bundle->nchannels()); ++k) {
y = by;
for (uint32_t l = 0; l < _matrix->count_of_our_type ((*j)->bundle->nchannels()); ++l) {
ARDOUR::BundleChannel c[2];
c[_matrix->column_index()] = ARDOUR::BundleChannel (
(*i)->bundle,
(*i)->bundle->type_channel_to_overall (_matrix->type (), k)
);
c[_matrix->row_index()] = ARDOUR::BundleChannel (
(*j)->bundle,
(*j)->bundle->type_channel_to_overall (_matrix->type (), l)
);
if (c[0].bundle->channel_type (c[0].channel) != c[1].bundle->channel_type (c[1].channel)) {
/* these two channels are of different types */
draw_non_connectable_indicator (cr, x, y);
} else {
/* these two channels might be associated */
PortMatrixNode::State const s = _matrix->get_state (c);
switch (s) {
case PortMatrixNode::ASSOCIATED:
draw_association_indicator (cr, x, y);
break;
case PortMatrixNode::NOT_ASSOCIATED:
break;
default:
break;
}
}
y += grid_spacing();
}
if (_matrix->count_of_our_type ((*j)->bundle->nchannels()) == 0) {
/* the *j bundle has no channels of our type, so it will have a dummy
one which needs to be marked non-connectable.
*/
draw_non_connectable_indicator (cr, x, y);
}
x += grid_spacing();
}
if (_matrix->count_of_our_type ((*i)->bundle->nchannels()) == 0) {
/* draw non-connectable indicators for the case where the *i bundle
has no channels of our type (and hence has 1 dummy channel)
*/
y = by;
for (uint32_t l = 0; l < _matrix->count_of_our_type_min_1 ((*j)->bundle->nchannels()); ++l) {
draw_non_connectable_indicator (cr, x, y);
y += grid_spacing ();
}
}
by += _matrix->count_of_our_type_min_1 ((*j)->bundle->nchannels()) * grid_spacing();
}
bx += _matrix->count_of_our_type_min_1 ((*i)->bundle->nchannels()) * grid_spacing();
}
}
}
void
PortMatrixGrid::draw_association_indicator (cairo_t* cr, uint32_t x, uint32_t y, double p)
{
set_source_rgba (cr, association_colour(), 0.5);
cairo_arc (
cr,
x + grid_spacing() / 2,
y + grid_spacing() / 2,
(grid_spacing() - (2 * connection_indicator_pad())) / 2,
0,
p * 2 * M_PI
);
cairo_fill (cr);
}
void
PortMatrixGrid::draw_empty_square (cairo_t* cr, uint32_t x, uint32_t y)
{
set_source_rgb (cr, background_colour());
cairo_rectangle (
cr,
x + thick_grid_line_width(),
y + thick_grid_line_width(),
grid_spacing() - 2 * thick_grid_line_width(),
grid_spacing() - 2 * thick_grid_line_width()
);
cairo_fill (cr);
}
/** Draw a square to indicate that two channels in a matrix cannot be associated
* with each other.
*/
void
PortMatrixGrid::draw_non_connectable_indicator (cairo_t* cr, uint32_t x, uint32_t y)
{
set_source_rgb (cr, non_connectable_colour ());
cairo_rectangle (
cr,
x + thick_grid_line_width(),
y + thick_grid_line_width(),
grid_spacing() - 2 * thick_grid_line_width(),
grid_spacing() - 2 * thick_grid_line_width()
);
cairo_fill (cr);
}
PortMatrixNode
PortMatrixGrid::position_to_node (double x, double y) const
{
return PortMatrixNode (
position_to_channel (y, x, _matrix->visible_rows()),
position_to_channel (x, y, _matrix->visible_columns())
);
}
void
PortMatrixGrid::button_press (double x, double y, GdkEventButton* ev)
{
ARDOUR::BundleChannel const px = position_to_channel (x, y, _matrix->visible_columns());
ARDOUR::BundleChannel const py = position_to_channel (y, x, _matrix->visible_rows());
if (ev->button == 1) {
_dragging = true;
_drag_valid = (px.bundle && py.bundle);
_moved = false;
_drag_start_x = x / grid_spacing ();
_drag_start_y = y / grid_spacing ();
} else if (ev->button == 3) {
_matrix->popup_menu (px, py, ev->time);
}
}
void
PortMatrixGrid::set_association (PortMatrixNode node, bool s)
{
if (_matrix->show_only_bundles()) {
for (uint32_t i = 0; i < node.column.bundle->nchannels().n_total(); ++i) {
for (uint32_t j = 0; j < node.row.bundle->nchannels().n_total(); ++j) {
if (!_matrix->should_show (node.column.bundle->channel_type(i)) || !_matrix->should_show (node.row.bundle->channel_type(j))) {
continue;
}
ARDOUR::BundleChannel c[2];
c[_matrix->column_index()] = ARDOUR::BundleChannel (node.column.bundle, i);
c[_matrix->row_index()] = ARDOUR::BundleChannel (node.row.bundle, j);
_matrix->set_state (c, s && (i == j));
}
}
} else {
if (node.row.bundle && node.column.bundle) {
ARDOUR::BundleChannel c[2];
c[_matrix->row_index()] = node.row;
c[_matrix->column_index()] = node.column;
_matrix->set_state (c, s);
}
}
}
void
PortMatrixGrid::button_release (double x, double y, GdkEventButton* ev)
{
if (ev->button == 1) {
if (x != -1) {
if (_dragging && _moved) {
if (_drag_valid) {
list<PortMatrixNode> const p = nodes_on_line (_drag_start_x, _drag_start_y, _drag_x, _drag_y);
if (!p.empty()) {
PortMatrixNode::State const s = _matrix->get_association (p.front());
for (list<PortMatrixNode>::const_iterator i = p.begin(); i != p.end(); ++i) {
set_association (*i, toggle_state (s));
}
}
}
} else {
if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
/* associate/disassociate things diagonally down and right until we run out */
PortMatrixNode::State s = (PortMatrixNode::State) 0;
while (1) {
PortMatrixNode const n = position_to_node (x, y);
if (n.row.bundle && n.column.bundle) {
if (s == (PortMatrixNode::State) 0) {
s = _matrix->get_association (n);
}
set_association (n, toggle_state (s));
} else {
break;
}
x += grid_spacing ();
y += grid_spacing ();
}
} else {
PortMatrixNode const n = position_to_node (x, y);
if (n.row.bundle && n.column.bundle) {
PortMatrixNode::State const s = _matrix->get_association (n);
set_association (n, toggle_state (s));
}
}
}
require_render ();
}
_body->queue_draw ();
}
_dragging = false;
}
void
PortMatrixGrid::draw_extra (cairo_t* cr)
{
set_source_rgba (cr, mouseover_line_colour(), 0.3);
cairo_set_line_width (cr, mouseover_line_width());
list<PortMatrixNode> const m = _body->mouseover ();
for (list<PortMatrixNode>::const_iterator i = m.begin(); i != m.end(); ++i) {
double const x = component_to_parent_x (channel_to_position (i->column, _matrix->visible_columns()) * grid_spacing()) + grid_spacing() / 2;
double const y = component_to_parent_y (channel_to_position (i->row, _matrix->visible_rows()) * grid_spacing()) + grid_spacing() / 2;
if (PortMatrix::bundle_with_channels (i->row.bundle) && PortMatrix::bundle_with_channels (i->column.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);
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);
}
}
if (_dragging && _drag_valid && _moved) {
list<PortMatrixNode> const p = nodes_on_line (_drag_start_x, _drag_start_y, _drag_x, _drag_y);
if (!p.empty()) {
bool const s = toggle_state (_matrix->get_association (p.front()));
for (list<PortMatrixNode>::const_iterator i = p.begin(); i != p.end(); ++i) {
if (s) {
draw_association_indicator (
cr,
component_to_parent_x (channel_to_position (i->column, _matrix->visible_columns()) * grid_spacing ()),
component_to_parent_y (channel_to_position (i->row, _matrix->visible_rows()) * grid_spacing ())
);
} else {
draw_empty_square (
cr,
component_to_parent_x (channel_to_position (i->column, _matrix->visible_columns()) * grid_spacing ()),
component_to_parent_y (channel_to_position (i->row, _matrix->visible_rows()) * grid_spacing ())
);
}
}
}
set_source_rgba (cr, association_colour (), 0.3);
cairo_move_to (
cr,
component_to_parent_x (_drag_start_x * grid_spacing() + grid_spacing() / 2),
component_to_parent_y (_drag_start_y * grid_spacing() + grid_spacing() / 2)
);
cairo_line_to (
cr,
component_to_parent_x (_drag_x * grid_spacing() + grid_spacing() / 2),
component_to_parent_y (_drag_y * grid_spacing() + grid_spacing() / 2)
);
cairo_stroke (cr);
}
}
void
PortMatrixGrid::mouseover_changed (list<PortMatrixNode> const & old)
{
queue_draw_for (old);
queue_draw_for (_body->mouseover());
}
void
PortMatrixGrid::motion (double x, double y)
{
_body->set_mouseover (position_to_node (x, y));
int const px = x / grid_spacing ();
int const py = y / grid_spacing ();
if (_dragging && !_moved && ( (px != _drag_start_x || py != _drag_start_x) )) {
_moved = true;
}
if (_dragging && _drag_valid && _moved) {
_drag_x = px;
_drag_y = py;
_body->queue_draw ();
}
}
void
PortMatrixGrid::queue_draw_for (list<PortMatrixNode> const &n)
{
for (list<PortMatrixNode>::const_iterator i = n.begin(); i != n.end(); ++i) {
if (i->row.bundle) {
double const y = channel_to_position (i->row, _matrix->visible_rows()) * grid_spacing ();
_body->queue_draw_area (
_parent_rectangle.get_x(),
component_to_parent_y (y),
_parent_rectangle.get_width(),
grid_spacing()
);
}
if (i->column.bundle) {
double const x = channel_to_position (i->column, _matrix->visible_columns()) * grid_spacing ();
_body->queue_draw_area (
component_to_parent_x (x),
_parent_rectangle.get_y(),
grid_spacing(),
_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();
}
list<PortMatrixNode>
PortMatrixGrid::nodes_on_line (int x0, int y0, int x1, int y1) const
{
list<PortMatrixNode> p;
bool const steep = abs (y1 - y0) > abs (x1 - x0);
if (steep) {
int tmp = x0;
x0 = y0;
y0 = tmp;
tmp = y1;
y1 = x1;
x1 = tmp;
}
if (x0 > x1) {
int tmp = x0;
x0 = x1;
x1 = tmp;
tmp = y0;
y0 = y1;
y1 = tmp;
}
int dx = x1 - x0;
int dy = abs (y1 - y0);
double err = 0;
double derr = double (dy) / dx;
int y = y0;
int const ystep = y0 < y1 ? 1 : -1;
for (int x = x0; x <= x1; ++x) {
if (steep) {
PortMatrixNode n = position_to_node (y * grid_spacing (), x * grid_spacing ());
if (n.row.bundle && n.column.bundle) {
p.push_back (n);
}
} else {
PortMatrixNode n = position_to_node (x * grid_spacing (), y * grid_spacing ());
if (n.row.bundle && n.column.bundle) {
p.push_back (n);
}
}
err += derr;
if (err >= 0.5) {
y += ystep;
err -= 1;
}
}
return p;
}
bool
PortMatrixGrid::toggle_state (PortMatrixNode::State s) const
{
return (s == PortMatrixNode::NOT_ASSOCIATED || s == PortMatrixNode::PARTIAL);
}
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