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livetrax/gtk2_ardour/port_matrix_column_labels.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 "ardour/bundle.h"
#include "ardour/types.h"
#include "port_matrix_column_labels.h"
#include "port_matrix.h"
#include "port_matrix_body.h"
#include "utils.h"
using namespace std;
PortMatrixColumnLabels::PortMatrixColumnLabels (PortMatrix* m, PortMatrixBody* b)
: PortMatrixLabels (m, b),
_overhang (0)
{
}
void
PortMatrixColumnLabels::compute_dimensions ()
{
GdkPixmap* pm = gdk_pixmap_new (NULL, 1, 1, 24);
gdk_drawable_set_colormap (pm, gdk_colormap_get_system());
cairo_t* cr = gdk_cairo_create (pm);
/* width of the longest bundle name */
_longest_bundle_name = 0;
/* width of the longest channel name */
_longest_channel_name = 0;
/* Compute dimensions using all port groups, so that we allow for the largest and hence
we can change between visible groups without the size of the labels jumping around.
*/
for (PortGroupList::List::const_iterator i = _matrix->columns()->begin(); i != _matrix->columns()->end(); ++i) {
PortGroup::BundleList const c = _matrix->columns()->bundles();
for (PortGroup::BundleList::const_iterator j = c.begin (); j != c.end(); ++j) {
cairo_text_extents_t ext;
cairo_text_extents (cr, (*j)->bundle->name().c_str(), &ext);
if (ext.width > _longest_bundle_name) {
_longest_bundle_name = ext.width;
}
for (uint32_t k = 0; k < (*j)->bundle->nchannels (); ++k) {
cairo_text_extents (
cr,
(*j)->bundle->channel_name (k).c_str(),
&ext
);
if (ext.width > _longest_channel_name) {
_longest_channel_name = ext.width;
}
}
}
}
/* height metrics */
cairo_text_extents_t ext;
cairo_text_extents (cr, X_("AQRjpy"), &ext);
_text_height = ext.height;
_descender_height = ext.height + ext.y_bearing;
/* width of the whole thing */
if (_matrix->visible_columns()) {
_width = group_size (_matrix->visible_columns()) * grid_spacing ();
} else {
_width = 0;
}
cairo_destroy (cr);
gdk_pixmap_unref (pm);
/* height of the whole thing */
int a = _longest_bundle_name + 4 * name_pad();
if (!_matrix->show_only_bundles()) {
a += _longest_channel_name;
}
_height = a * sin (angle()) + _text_height * cos (angle());
_overhang = _height / tan (angle ());
_width += _overhang;
}
double
PortMatrixColumnLabels::basic_text_x_pos (int) const
{
return grid_spacing() / 2 +
_text_height / (2 * sin (angle ()));
}
void
PortMatrixColumnLabels::render (cairo_t* cr)
{
/* BACKGROUND */
set_source_rgb (cr, background_colour());
cairo_rectangle (cr, 0, 0, _width, _height);
cairo_fill (cr);
/* BUNDLE PARALLELOGRAM-TYPE-THING AND NAME */
double x = 0;
int N = 0;
PortGroup::BundleList const & bundles = _matrix->visible_columns()->bundles ();
for (PortGroup::BundleList::const_iterator i = bundles.begin (); i != bundles.end(); ++i) {
Gdk::Color c = (*i)->has_colour ? (*i)->colour : get_a_bundle_colour (N);
render_bundle_name (cr, background_colour (), c, x, 0, (*i)->bundle);
if (_matrix->show_only_bundles()) {
x += grid_spacing();
} else {
x += (*i)->bundle->nchannels () * grid_spacing();
}
++N;
}
/* PORT NAMES */
if (!_matrix->show_only_bundles()) {
x = 0;
N = 0;
for (PortGroup::BundleList::const_iterator i = bundles.begin (); i != bundles.end(); ++i) {
for (uint32_t j = 0; j < (*i)->bundle->nchannels(); ++j) {
Gdk::Color c = (*i)->has_colour ? (*i)->colour : get_a_bundle_colour (N);
render_channel_name (cr, background_colour (), c, x, 0, ARDOUR::BundleChannel ((*i)->bundle, j));
x += grid_spacing();
}
++N;
}
}
}
double
PortMatrixColumnLabels::component_to_parent_x (double x) const
{
return x - _body->xoffset() + _parent_rectangle.get_x();
}
double
PortMatrixColumnLabels::parent_to_component_x (double x) const
{
return x + _body->xoffset() - _parent_rectangle.get_x();
}
double
PortMatrixColumnLabels::component_to_parent_y (double y) const
{
/* Column labels don't scroll vertically, so y conversion does not depend on yoffset */
return y + _parent_rectangle.get_y();
}
double
PortMatrixColumnLabels::parent_to_component_y (double y) const
{
/* Column labels don't scroll vertically, so y conversion does not depend on yoffset */
return y - _parent_rectangle.get_y();
}
void
PortMatrixColumnLabels::mouseover_changed (list<PortMatrixNode> const &)
{
list<PortMatrixNode> const m = _body->mouseover ();
for (list<PortMatrixNode>::const_iterator i = m.begin(); i != m.end(); ++i) {
ARDOUR::BundleChannel c = i->column;
ARDOUR::BundleChannel r = i->row;
if (c.bundle && r.bundle) {
add_channel_highlight (c);
} else if (c.bundle) {
_body->highlight_associated_channels (_matrix->column_index(), c);
}
}
}
vector<pair<double, double> >
PortMatrixColumnLabels::port_name_shape (double xoff, double yoff) const
{
vector<pair<double, double> > shape;
double const lc = _longest_channel_name + name_pad();
double const w = grid_spacing();
if (_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM) {
double x_ = xoff + _height / tan (angle()) + w;
double y_ = yoff;
shape.push_back (make_pair (x_, y_));
x_ -= w;
shape.push_back (make_pair (x_, y_));
x_ -= lc * cos (angle());
y_ += lc * sin (angle());
shape.push_back (make_pair (x_, y_));
x_ += w * pow (sin (angle()), 2);
y_ += w * sin (angle()) * cos (angle());
shape.push_back (make_pair (x_, y_));
} else {
double x_ = xoff;
double y_ = yoff + _height;
shape.push_back (make_pair (x_, y_));
x_ += w;
shape.push_back (make_pair (x_, y_));
x_ += lc * cos (angle());
y_ -= lc * sin (angle());
shape.push_back (make_pair (x_, y_));
x_ -= grid_spacing() * pow (sin (angle()), 2);
y_ -= grid_spacing() * sin (angle()) * cos (angle());
shape.push_back (make_pair (x_, y_));
}
return shape;
}
void
PortMatrixColumnLabels::render_bundle_name (
cairo_t* cr, Gdk::Color fg_colour, Gdk::Color bg_colour, double xoff, double yoff, boost::shared_ptr<ARDOUR::Bundle> b
)
{
set_source_rgb (cr, bg_colour);
double w = 0;
if (_matrix->show_only_bundles()) {
w = grid_spacing ();
} else {
w = b->nchannels() * grid_spacing();
}
double x_ = xoff;
uint32_t y = yoff;
y += _height;
double y_ = y;
cairo_move_to (cr, x_, y_);
x_ += w;
cairo_line_to (cr, x_, y_);
x_ += _height / tan (angle ());
y_ -= _height;
cairo_line_to (cr, x_, y_);
x_ -= w;
cairo_line_to (cr, x_, y_);
cairo_line_to (cr, xoff, y);
cairo_fill_preserve (cr);
set_source_rgb (cr, fg_colour);
cairo_set_line_width (cr, label_border_width());
cairo_stroke (cr);
set_source_rgb (cr, text_colour());
double const q = ((grid_spacing() * sin (angle())) - _text_height) / 2 + _descender_height;
if (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT) {
double rl = 0;
if (_matrix->show_only_bundles()) {
rl = name_pad();
} else {
rl = 3 * name_pad() + _longest_channel_name;
}
cairo_move_to (
cr,
xoff + grid_spacing() - q * sin (angle ()) + rl * cos (angle()),
yoff + _height - q * cos (angle ()) - rl * sin (angle())
);
} else {
cairo_move_to (
cr,
xoff + grid_spacing() - q * sin (angle ()),
yoff + _height - q * cos (angle ())
);
}
cairo_save (cr);
cairo_rotate (cr, -angle());
cairo_show_text (cr, b->name().c_str());
cairo_restore (cr);
}
void
PortMatrixColumnLabels::render_channel_name (
cairo_t* cr, Gdk::Color fg_colour, Gdk::Color bg_colour, double xoff, double yoff, ARDOUR::BundleChannel const &bc
)
{
vector<pair<double, double> > const shape = port_name_shape (xoff, yoff);
cairo_move_to (cr, shape[0].first, shape[0].second);
for (uint32_t i = 1; i < 4; ++i) {
cairo_line_to (cr, shape[i].first, shape[i].second);
}
cairo_line_to (cr, shape[0].first, shape[0].second);
set_source_rgb (cr, bg_colour);
cairo_fill_preserve (cr);
set_source_rgb (cr, fg_colour);
cairo_set_line_width (cr, label_border_width());
cairo_stroke (cr);
set_source_rgb (cr, text_colour());
double const q = ((grid_spacing() * sin (angle())) - _text_height) / 2 + _descender_height;
if (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT) {
cairo_move_to (
cr,
xoff + grid_spacing() - q * sin (angle ()),
yoff + _height - q * cos (angle ())
);
} else {
double const rl = 3 * name_pad() + _longest_bundle_name;
cairo_move_to (
cr,
xoff + grid_spacing() - q * sin (angle ()) + rl * cos (angle ()),
yoff + _height - q * cos (angle ()) - rl * sin (angle())
);
}
if (bc.bundle->nchannels() > 1) {
/* only plot the name if the bundle has more than one channel;
the name of a single channel is assumed to be redundant */
cairo_save (cr);
cairo_rotate (cr, -angle());
cairo_show_text (
cr,
bc.bundle->channel_name(bc.channel).c_str()
);
cairo_restore (cr);
}
}
double
PortMatrixColumnLabels::channel_x (ARDOUR::BundleChannel const &bc) const
{
return channel_to_position (bc, _matrix->visible_columns()) * grid_spacing ();
}
double
PortMatrixColumnLabels::channel_y (ARDOUR::BundleChannel const &) const
{
return 0;
}
void
PortMatrixColumnLabels::queue_draw_for (ARDOUR::BundleChannel const & bc)
{
if (!bc.bundle) {
return;
}
if (_matrix->show_only_bundles()) {
_body->queue_draw_area (
component_to_parent_x (channel_x (bc)) - 1,
component_to_parent_y (0) - 1,
grid_spacing() + _height * tan (angle()) + 2,
_height + 2
);
} else {
double const x = channel_x (bc);
double const lc = _longest_channel_name + name_pad();
double const h = lc * sin (angle ()) + grid_spacing() * sin (angle()) * cos (angle());
if (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT) {
_body->queue_draw_area (
component_to_parent_x (x) - 1,
component_to_parent_y (_height - h) - 1,
grid_spacing() + lc * cos (angle()) + 2,
h + 2
);
} else if (_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM) {
double const x_ = x + _height / tan (angle()) - lc * cos (angle());
_body->queue_draw_area (
component_to_parent_x (x_) - 1,
component_to_parent_y (0) - 1,
grid_spacing() + lc * cos (angle()) + 2,
h + 2
);
}
}
}
ARDOUR::BundleChannel
PortMatrixColumnLabels::position_to_channel (double p, double o, boost::shared_ptr<const PortGroup> group) const
{
uint32_t const cx = p - (_height - o) * tan (angle ());
return PortMatrixComponent::position_to_channel (cx, o, group);
}
void
PortMatrixColumnLabels::button_press (double x, double y, int b, uint32_t t, guint)
{
ARDOUR::BundleChannel w = position_to_channel (x, y, _matrix->visible_columns());
if (
(_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM && y > (_height - _longest_bundle_name * sin (angle ()))) ||
(_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT && y < (_longest_bundle_name * sin (angle ())))
) {
w.channel = -1;
}
if (b == 3) {
_matrix->popup_menu (
w,
ARDOUR::BundleChannel (),
t
);
}
}
void
PortMatrixColumnLabels::motion (double x, double y)
{
ARDOUR::BundleChannel const w = position_to_channel (x, y, _matrix->visible_columns());
if (w.bundle == 0) {
_body->set_mouseover (PortMatrixNode ());
return;
}
uint32_t const bh = _longest_channel_name * sin (angle ()) + _text_height / cos (angle ());
if (
(_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM && y > bh) ||
(_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT && y < (_height - bh))
) {
/* if the mouse is over a bundle name, highlight all channels in the bundle */
list<PortMatrixNode> n;
for (uint32_t i = 0; i < w.bundle->nchannels(); ++i) {
ARDOUR::BundleChannel const bc (w.bundle, i);
n.push_back (PortMatrixNode (ARDOUR::BundleChannel (), bc));
}
_body->set_mouseover (n);
} else {
_body->set_mouseover (PortMatrixNode (ARDOUR::BundleChannel (), w));
}
}