Paul Davis
5ad82b1e6d
git-svn-id: svn://localhost/ardour2/branches/3.0@8952 d708f5d6-7413-0410-9779-e7cbd77b26cf
396 lines
9.3 KiB
C++
396 lines
9.3 KiB
C++
/*
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Copyright (C) 2011 Paul Davis
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "pbd/cartesian.h"
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#include "gtkmm2ext/keyboard.h"
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#include "speaker_dialog.h"
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#include "i18n.h"
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using namespace ARDOUR;
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using namespace PBD;
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using namespace std;
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using namespace Gtk;
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using namespace Gtkmm2ext;
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SpeakerDialog::SpeakerDialog ()
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: ArdourDialog (_("Speaker Configuration"))
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, aspect_frame ("", 0.5, 0.5, 1.0, false)
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, azimuth_adjustment (0, 0.0, 360.0, 10.0, 1.0)
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, azimuth_spinner (azimuth_adjustment)
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, add_speaker_button (_("Add Speaker"))
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, use_system_button (_("Use System"))
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{
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side_vbox.set_homogeneous (false);
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side_vbox.set_border_width (9);
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side_vbox.set_spacing (6);
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side_vbox.pack_start (azimuth_spinner, false, false);
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side_vbox.pack_start (add_speaker_button, false, false);
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side_vbox.pack_start (use_system_button, false, false);
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aspect_frame.set_size_request (200, 200);
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aspect_frame.set_shadow_type (SHADOW_NONE);
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aspect_frame.add (darea);
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hbox.set_spacing (6);
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hbox.set_border_width (6);
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hbox.pack_start (aspect_frame, true, true);
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hbox.pack_start (side_vbox, false, false);
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get_vbox()->pack_start (hbox);
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get_vbox()->show_all ();
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darea.add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK|Gdk::POINTER_MOTION_MASK);
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darea.signal_size_allocate().connect (sigc::mem_fun (*this, &SpeakerDialog::darea_size_allocate));
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darea.signal_expose_event().connect (sigc::mem_fun (*this, &SpeakerDialog::darea_expose_event));
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darea.signal_button_press_event().connect (sigc::mem_fun (*this, &SpeakerDialog::darea_button_press_event));
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darea.signal_button_release_event().connect (sigc::mem_fun (*this, &SpeakerDialog::darea_button_release_event));
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darea.signal_motion_notify_event().connect (sigc::mem_fun (*this, &SpeakerDialog::darea_motion_notify_event));
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drag_index = -1;
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}
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void
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SpeakerDialog::set_speakers (boost::shared_ptr<Speakers> s)
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{
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speakers = *s;
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}
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Speakers
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SpeakerDialog::get_speakers () const
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{
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return speakers;
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}
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bool
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SpeakerDialog::darea_expose_event (GdkEventExpose* event)
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{
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gint x, y;
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cairo_t* cr;
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cr = gdk_cairo_create (darea.get_window()->gobj());
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cairo_set_line_width (cr, 1.0);
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cairo_rectangle (cr, event->area.x, event->area.y, event->area.width, event->area.height);
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cairo_set_source_rgba (cr, 0.1, 0.1, 0.1, 1.0);
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cairo_fill_preserve (cr);
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cairo_clip (cr);
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if (height > 100) {
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cairo_translate (cr, 10.0, 10.0);
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}
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/* horizontal line of "crosshairs" */
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cairo_set_source_rgb (cr, 0.0, 0.1, 0.7);
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cairo_move_to (cr, 0.5, height/2.0+0.5);
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cairo_line_to (cr, width+0.5, height/2+0.5);
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cairo_stroke (cr);
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/* vertical line of "crosshairs" */
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cairo_move_to (cr, width/2+0.5, 0.5);
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cairo_line_to (cr, width/2+0.5, height+0.5);
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cairo_stroke (cr);
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/* the circle on which signals live */
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cairo_arc (cr, width/2, height/2, height/2, 0, 2.0 * M_PI);
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cairo_stroke (cr);
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float arc_radius;
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cairo_select_font_face (cr, "sans", CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_NORMAL);
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if (height < 100) {
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cairo_set_font_size (cr, 10);
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arc_radius = 2.0;
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} else {
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cairo_set_font_size (cr, 16);
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arc_radius = 4.0;
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}
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uint32_t n = 0;
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for (vector<Speaker>::iterator i = speakers.speakers().begin(); i != speakers.speakers().end(); ++i) {
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Speaker& s (*i);
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CartesianVector c (s.coords());
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cart_to_gtk (c);
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x = (gint) floor (c.x);
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y = (gint) floor (c.y);
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/* XXX need to shift circles so that they are centered on the circle */
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cairo_arc (cr, x, y, arc_radius, 0, 2.0 * M_PI);
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cairo_set_source_rgb (cr, 0.8, 0.2, 0.1);
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cairo_close_path (cr);
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cairo_fill (cr);
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cairo_move_to (cr, x + 6, y + 6);
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char buf[256];
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snprintf (buf, sizeof (buf), "%d:%d", n+1, (int) lrint (s.angles().azi));
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cairo_show_text (cr, buf);
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++n;
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}
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cairo_destroy (cr);
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return true;
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}
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void
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SpeakerDialog::cart_to_gtk (CartesianVector& c) const
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{
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/* "c" uses a coordinate space that is:
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center = 0.0
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dimension = 2.0 * 2.0
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so max values along each axis are -1..+1
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GTK uses a coordinate space that is:
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top left = 0.0
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dimension = width * height
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so max values along each axis are 0,width and
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0,height
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*/
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c.x = (width / 2) * (c.x + 1);
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c.y = (height / 2) * (1 - c.y);
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/* XXX z-axis not handled - 2D for now */
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}
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void
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SpeakerDialog::gtk_to_cart (CartesianVector& c) const
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{
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c.x = (c.x / (width / 2.0)) - 1.0;
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c.y = -((c.y / (height / 2.0)) - 1.0);
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/* XXX z-axis not handled - 2D for now */
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}
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void
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SpeakerDialog::clamp_to_circle (double& x, double& y)
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{
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double azi, ele;
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double z = 0.0;
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double l;
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PBD::cartesian_to_spherical (x, y, z, azi, ele, l);
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PBD::spherical_to_cartesian (azi, ele, 1.0, x, y, z);
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}
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void
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SpeakerDialog::darea_size_allocate (Gtk::Allocation& alloc)
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{
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width = alloc.get_width();
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height = alloc.get_height();
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if (height > 100) {
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width -= 20;
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height -= 20;
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}
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}
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bool
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SpeakerDialog::darea_button_press_event (GdkEventButton *ev)
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{
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GdkModifierType state;
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if (ev->type == GDK_2BUTTON_PRESS && ev->button == 1) {
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return false;
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}
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drag_index = -1;
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switch (ev->button) {
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case 1:
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case 2:
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drag_index = find_closest_object (ev->x, ev->y);
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drag_x = (int) floor (ev->x);
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drag_y = (int) floor (ev->y);
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state = (GdkModifierType) ev->state;
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return handle_motion (drag_x, drag_y, state);
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break;
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default:
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break;
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}
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return false;
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}
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bool
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SpeakerDialog::darea_button_release_event (GdkEventButton *ev)
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{
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gint x, y;
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GdkModifierType state;
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bool ret = false;
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switch (ev->button) {
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case 1:
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x = (int) floor (ev->x);
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y = (int) floor (ev->y);
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state = (GdkModifierType) ev->state;
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if (Keyboard::modifier_state_contains (state, Keyboard::TertiaryModifier)) {
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for (vector<Speaker>::iterator i = speakers.speakers().begin(); i != speakers.speakers().end(); ++i) {
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/* XXX DO SOMETHING TO SET SPEAKER BACK TO "normal" */
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}
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queue_draw ();
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ret = true;
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} else {
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ret = handle_motion (x, y, state);
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}
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break;
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case 2:
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x = (int) floor (ev->x);
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y = (int) floor (ev->y);
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state = (GdkModifierType) ev->state;
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ret = handle_motion (x, y, state);
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break;
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case 3:
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break;
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}
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drag_index = -1;
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return ret;
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}
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int
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SpeakerDialog::find_closest_object (gdouble x, gdouble y)
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{
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float distance;
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float best_distance = FLT_MAX;
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int n = 0;
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int which = -1;
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for (vector<Speaker>::iterator i = speakers.speakers().begin(); i != speakers.speakers().end(); ++i, ++n) {
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Speaker& candidate (*i);
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CartesianVector c;
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candidate.angles().cartesian (c);
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cart_to_gtk (c);
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distance = sqrt ((c.x - x) * (c.x - x) +
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(c.y - y) * (c.y - y));
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if (distance < best_distance) {
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best_distance = distance;
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which = n;
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}
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}
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if (best_distance > 20) { // arbitrary
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return -1;
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}
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return which;
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}
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bool
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SpeakerDialog::darea_motion_notify_event (GdkEventMotion *ev)
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{
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gint x, y;
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GdkModifierType state;
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if (ev->is_hint) {
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gdk_window_get_pointer (ev->window, &x, &y, &state);
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} else {
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x = (int) floor (ev->x);
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y = (int) floor (ev->y);
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state = (GdkModifierType) ev->state;
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}
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return handle_motion (x, y, state);
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}
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bool
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SpeakerDialog::handle_motion (gint evx, gint evy, GdkModifierType state)
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{
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if (drag_index < 0) {
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return false;
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}
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if ((state & (GDK_BUTTON1_MASK|GDK_BUTTON2_MASK)) == 0) {
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return false;
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}
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if (state & GDK_BUTTON1_MASK && !(state & GDK_BUTTON2_MASK)) {
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CartesianVector c;
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bool need_move = false;
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Speaker& moving (speakers.speakers()[drag_index]);
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moving.angles().cartesian (c);
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cart_to_gtk (c);
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if ((evx != c.x) || (evy != c.y)) {
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need_move = true;
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}
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if (need_move) {
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CartesianVector cp (evx, evy, 0.0);
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/* canonicalize position */
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gtk_to_cart (cp);
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/* position actual signal on circle */
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clamp_to_circle (cp.x, cp.y);
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/* generate an angular representation and set drag target (GUI) position */
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AngularVector a;
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cp.angular (a);
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moving.move (a);
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queue_draw ();
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}
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}
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return true;
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}
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