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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"
PortMatrixColumnLabels::PortMatrixColumnLabels (PortMatrix* m, PortMatrixBody* b)
: PortMatrixLabels (m, b)
{
}
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;
/* height of highest bit of text (apart from group names) */
_highest_text = 0;
/* width of the whole thing */
_width = 0;
ARDOUR::BundleList const c = _matrix->columns()->bundles();
for (ARDOUR::BundleList::const_iterator i = c.begin (); i != c.end(); ++i) {
cairo_text_extents_t ext;
cairo_text_extents (cr, (*i)->name().c_str(), &ext);
if (ext.width > _longest_bundle_name) {
_longest_bundle_name = ext.width;
}
if (ext.height > _highest_text) {
_highest_text = ext.height;
}
for (uint32_t j = 0; j < (*i)->nchannels (); ++j) {
cairo_text_extents (
cr,
(*i)->channel_name (j).c_str(),
&ext
);
if (ext.width > _longest_channel_name) {
_longest_channel_name = ext.width;
}
if (ext.height > _highest_text) {
_highest_text = ext.height;
}
}
_width += (*i)->nchannels() * column_width();
}
_highest_group_name = 0;
for (PortGroupList::List::const_iterator i = _matrix->columns()->begin(); i != _matrix->columns()->end(); ++i) {
if ((*i)->visible()) {
cairo_text_extents_t ext;
cairo_text_extents (cr, (*i)->name.c_str(), &ext);
if (ext.height > _highest_group_name) {
_highest_group_name = ext.height;
}
}
}
cairo_destroy (cr);
gdk_pixmap_unref (pm);
/* height of the whole thing */
double const parallelogram_height =
(_longest_bundle_name + _longest_channel_name + 4 * name_pad()) * sin (angle())
+ _highest_text * cos (angle());
_height = parallelogram_height + _highest_group_name + 2 * name_pad();
_width += parallelogram_height / tan (angle ());
}
double
PortMatrixColumnLabels::basic_text_x_pos (int c) const
{
return column_width() / 2 +
_highest_text / (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);
/* PORT GROUP NAME */
double x = 0;
double y = 0;
if (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT) {
x = slanted_height() / tan (angle());
y = _highest_group_name + name_pad();
} else {
x = 0;
y = _height - name_pad();
}
int g = 0;
for (PortGroupList::List::const_iterator i = _matrix->columns()->begin(); i != _matrix->columns()->end(); ++i) {
if (!(*i)->visible() || (*i)->bundles().empty()) {
continue;
}
/* compute width of this group */
uint32_t w = (*i)->total_channels() * column_width();
/* rectangle */
set_source_rgb (cr, get_a_group_colour (g));
double const rh = _highest_group_name + 2 * name_pad();
if (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT) {
cairo_rectangle (cr, x, 0, w, rh);
} else {
cairo_rectangle (cr, x, _height - rh, w, rh);
}
cairo_fill (cr);
std::pair<std::string, double> const display = display_port_name (cr, (*i)->name, w);
/* plot it */
set_source_rgb (cr, text_colour());
cairo_move_to (cr, x + (w - display.second) / 2, y);
cairo_show_text (cr, display.first.c_str());
x += w;
++g;
}
/* BUNDLE PARALLELOGRAM-TYPE-THING AND NAME */
x = 0;
ARDOUR::BundleList const c = _matrix->columns()->bundles();
for (ARDOUR::BundleList::const_iterator i = c.begin (); i != c.end(); ++i) {
Gdk::Color colour = get_a_bundle_colour (i - c.begin ());
set_source_rgb (cr, colour);
double const w = (*i)->nchannels() * column_width();
double x_ = x;
if (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT) {
y = _height;
} else {
y = slanted_height();
}
double y_ = y;
cairo_move_to (cr, x_, y_);
x_ += w;
cairo_line_to (cr, x_, y_);
x_ += slanted_height() / tan (angle ());
y_ -= slanted_height();
cairo_line_to (cr, x_, y_);
x_ -= w;
cairo_line_to (cr, x_, y_);
cairo_line_to (cr, x, y);
cairo_fill_preserve (cr);
set_source_rgb (cr, background_colour());
cairo_set_line_width (cr, label_border_width());
cairo_stroke (cr);
set_source_rgb (cr, text_colour());
if (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT) {
double const rl = 3 * name_pad() + _longest_channel_name;
cairo_move_to (
cr,
x + basic_text_x_pos (0) + rl * cos (angle()),
_height - rl * sin (angle())
);
} else {
cairo_move_to (
cr,
x + basic_text_x_pos (0),
slanted_height() - name_pad() * sin (angle())
);
}
cairo_save (cr);
cairo_rotate (cr, -angle());
cairo_show_text (cr, (*i)->name().c_str());
cairo_restore (cr);
x += (*i)->nchannels () * column_width();
}
/* PORT NAMES */
x = 0;
for (ARDOUR::BundleList::const_iterator i = c.begin (); i != c.end(); ++i) {
for (uint32_t j = 0; j < (*i)->nchannels(); ++j) {
render_channel_name (cr, get_a_bundle_colour (i - c.begin()), x, 0, ARDOUR::BundleChannel (*i, j));
x += column_width();
}
}
}
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
{
return y + _parent_rectangle.get_y();
}
double
PortMatrixColumnLabels::parent_to_component_y (double y) const
{
return y - _parent_rectangle.get_y();
}
void
PortMatrixColumnLabels::mouseover_changed (PortMatrixNode const &)
{
clear_channel_highlights ();
if (_body->mouseover().column.bundle) {
add_channel_highlight (_body->mouseover().column);
}
}
std::vector<std::pair<double, double> >
PortMatrixColumnLabels::port_name_shape (double xoff, double yoff) const
{
std::vector<std::pair<double, double> > shape;
double const lc = _longest_channel_name + name_pad();
double const w = column_width();
if (_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM) {
double x_ = xoff + slanted_height() / tan (angle()) + w;
double y_ = yoff;
shape.push_back (std::make_pair (x_, y_));
x_ -= w;
shape.push_back (std::make_pair (x_, y_));
x_ -= lc * cos (angle());
y_ += lc * sin (angle());
shape.push_back (std::make_pair (x_, y_));
x_ += w * pow (sin (angle()), 2);
y_ += w * sin (angle()) * cos (angle());
shape.push_back (std::make_pair (x_, y_));
} else {
double x_ = xoff;
double y_ = yoff + _height;
shape.push_back (std::make_pair (x_, y_));
x_ += w;
shape.push_back (std::make_pair (x_, y_));
x_ += lc * cos (angle());
y_ -= lc * sin (angle());
shape.push_back (std::make_pair (x_, y_));
x_ -= column_width() * pow (sin (angle()), 2);
y_ -= column_width() * sin (angle()) * cos (angle());
shape.push_back (std::make_pair (x_, y_));
}
return shape;
}
void
PortMatrixColumnLabels::render_channel_name (cairo_t* cr, Gdk::Color colour, double xoff, double yoff, ARDOUR::BundleChannel const &bc)
{
std::vector<std::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, colour);
cairo_fill_preserve (cr);
set_source_rgb (cr, background_colour());
cairo_set_line_width (cr, label_border_width());
cairo_stroke (cr);
set_source_rgb (cr, text_colour());
if (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT) {
cairo_move_to (
cr,
xoff + basic_text_x_pos(bc.channel),
yoff + _height - name_pad() * sin (angle())
);
} else {
double const rl = 3 * name_pad() + _longest_bundle_name;
cairo_move_to (
cr,
xoff + basic_text_x_pos(bc.channel) + rl * cos (angle ()),
yoff + slanted_height() - rl * sin (angle())
);
}
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
{
uint32_t n = 0;
ARDOUR::BundleList::const_iterator i = _matrix->columns()->bundles().begin();
while (i != _matrix->columns()->bundles().end() && *i != bc.bundle) {
n += (*i)->nchannels ();
++i;
}
n += bc.channel;
return n * column_width();
}
double
PortMatrixColumnLabels::channel_y (ARDOUR::BundleChannel const &bc) const
{
return 0;
}
void
PortMatrixColumnLabels::queue_draw_for (ARDOUR::BundleChannel const & bc)
{
if (bc.bundle) {
double const x = channel_x (bc);
double const lc = _longest_channel_name + name_pad();
double const h = lc * sin (angle ()) + column_width() * sin (angle()) * cos (angle());
if (_matrix->arrangement() == PortMatrix::TOP_TO_RIGHT) {
_body->queue_draw_area (
component_to_parent_x (x),
component_to_parent_y (_height - h),
column_width() + lc * cos (angle()),
h
);
} else if (_matrix->arrangement() == PortMatrix::LEFT_TO_BOTTOM) {
double const x_ = x + slanted_height() / tan (angle()) - lc * cos (angle());
_body->queue_draw_area (
component_to_parent_x (x_),
component_to_parent_y (0),
column_width() + lc * cos (angle()),
h
);
}
}
}
void
PortMatrixColumnLabels::button_press (double x, double y, int b, uint32_t t)
{
uint32_t N = _matrix->columns()->total_visible_channels ();
uint32_t i = 0;
for (; i < N; ++i) {
std::vector<std::pair<double, double> > const shape = port_name_shape (i * column_width(), 0);
uint32_t j = 0;
for (; j < 4; ++j) {
uint32_t k = (j + 1) % 4;
double const P = (y - shape[j].second) * (shape[k].first - shape[j].first) -
(x - shape[j].first) * (shape[k].second - shape[j].second);
if (P > 0) {
break;
}
}
if (j == 4) {
break;
}
}
if (i == N) {
return;
}
switch (b) {
case 1:
_body->highlight_associated_channels (_matrix->column_index(), i);
break;
case 3:
_matrix->popup_channel_context_menu (_matrix->column_index(), i, t);
break;
}
}