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livetrax/gtk2_ardour/port_matrix_grid.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

648 lines
16 KiB
C++

/*
* 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);
}