--- /dev/null
+/*
+ Copyright (C) 2011 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 "pbd/cartesian.h"
+
+#include "gtkmm2ext/keyboard.h"
+
+#include "speaker_dialog.h"
+
+#include "i18n.h"
+
+using namespace ARDOUR;
+using namespace PBD;
+using namespace std;
+using namespace Gtk;
+using namespace Gtkmm2ext;
+
+SpeakerDialog::SpeakerDialog ()
+ : ArdourDialog (_("Speaker Configuration"))
+ , azimuth_adjustment (0, 0.0, 360.0, 10.0, 1.0)
+ , azimuth_spinner (azimuth_adjustment)
+ , add_speaker_button (_("Add Speaker"))
+ , use_system_button (_("Use System"))
+
+{
+ set_size_request (400, 200);
+
+ side_vbox.set_homogeneous (false);
+ side_vbox.set_border_width (9);
+ side_vbox.set_spacing (6);
+ side_vbox.pack_start (azimuth_spinner, false, false);
+ side_vbox.pack_start (add_speaker_button, false, false);
+ side_vbox.pack_start (use_system_button, false, false);
+
+ hbox.set_spacing (6);
+ hbox.set_border_width (6);
+ hbox.pack_start (darea, true, true);
+ hbox.pack_start (side_vbox, false, false);
+
+ get_vbox()->pack_start (hbox);
+ get_vbox()->show_all ();
+
+ darea.signal_size_allocate().connect (sigc::mem_fun (*this, &SpeakerDialog::darea_size_allocate));
+ darea.signal_expose_event().connect (sigc::mem_fun (*this, &SpeakerDialog::darea_expose_event));
+ darea.signal_button_press_event().connect (sigc::mem_fun (*this, &SpeakerDialog::darea_button_press_event));
+ darea.signal_button_release_event().connect (sigc::mem_fun (*this, &SpeakerDialog::darea_button_release_event));
+ darea.signal_motion_notify_event().connect (sigc::mem_fun (*this, &SpeakerDialog::darea_motion_notify_event));
+
+ drag_index = -1;
+}
+
+void
+SpeakerDialog::set_speakers (const Speakers& s)
+{
+ speakers = s;
+}
+
+Speakers
+SpeakerDialog::get_speakers () const
+{
+ return speakers;
+}
+
+bool
+SpeakerDialog::darea_expose_event (GdkEventExpose* event)
+{
+ gint x, y;
+ cairo_t* cr;
+
+ cr = gdk_cairo_create (darea.get_window()->gobj());
+
+ cairo_set_line_width (cr, 1.0);
+
+ cairo_rectangle (cr, event->area.x, event->area.y, event->area.width, event->area.height);
+ cairo_set_source_rgba (cr, 0.1, 0.1, 0.1, 1.0);
+ cairo_fill_preserve (cr);
+ cairo_clip (cr);
+
+ if (height > 100) {
+ cairo_translate (cr, 10.0, 10.0);
+ }
+
+ /* horizontal line of "crosshairs" */
+
+ cairo_set_source_rgb (cr, 0.0, 0.1, 0.7);
+ cairo_move_to (cr, 0.5, height/2.0+0.5);
+ cairo_line_to (cr, width+0.5, height/2+0.5);
+ cairo_stroke (cr);
+
+ /* vertical line of "crosshairs" */
+
+ cairo_move_to (cr, width/2+0.5, 0.5);
+ cairo_line_to (cr, width/2+0.5, height+0.5);
+ cairo_stroke (cr);
+
+ /* the circle on which signals live */
+
+ cairo_arc (cr, width/2, height/2, height/2, 0, 2.0 * M_PI);
+ cairo_stroke (cr);
+
+ float arc_radius;
+
+ cairo_select_font_face (cr, "sans", CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_NORMAL);
+
+ if (height < 100) {
+ cairo_set_font_size (cr, 10);
+ arc_radius = 2.0;
+ } else {
+ cairo_set_font_size (cr, 16);
+ arc_radius = 4.0;
+ }
+
+ uint32_t n = 0;
+ for (vector<Speaker>::iterator i = speakers.speakers().begin(); i != speakers.speakers().end(); ++i) {
+
+ Speaker& s (*i);
+ CartesianVector c (s.coords());
+
+ cart_to_gtk (c);
+
+ x = (gint) floor (c.x);
+ y = (gint) floor (c.y);
+
+ /* XXX need to shift circles so that they are centered on the circle */
+
+ cairo_arc (cr, x, y, arc_radius, 0, 2.0 * M_PI);
+ cairo_set_source_rgb (cr, 0.8, 0.2, 0.1);
+ cairo_close_path (cr);
+ cairo_fill (cr);
+
+ cairo_move_to (cr, x + 6, y + 6);
+
+ char buf[256];
+ snprintf (buf, sizeof (buf), "%d:%d", n+1, (int) lrint (s.angles().azi));
+ cairo_show_text (cr, buf);
+ ++n;
+ }
+
+ cairo_destroy (cr);
+
+ return true;
+
+}
+
+void
+SpeakerDialog::cart_to_gtk (CartesianVector& c) const
+{
+ /* "c" uses a coordinate space that is:
+
+ center = 0.0
+ dimension = 2.0 * 2.0
+ so max values along each axis are -1..+1
+
+ GTK uses a coordinate space that is:
+
+ top left = 0.0
+ dimension = width * height
+ so max values along each axis are 0,width and
+ 0,height
+ */
+
+ c.x = (width / 2) * (c.x + 1);
+ c.y = (height / 2) * (1 - c.y);
+
+ /* XXX z-axis not handled - 2D for now */
+}
+
+void
+SpeakerDialog::gtk_to_cart (CartesianVector& c) const
+{
+ c.x = (c.x / (width / 2.0)) - 1.0;
+ c.y = -((c.y / (height / 2.0)) - 1.0);
+
+ /* XXX z-axis not handled - 2D for now */
+}
+
+void
+SpeakerDialog::clamp_to_circle (double& x, double& y)
+{
+ double azi, ele;
+ double z = 0.0;
+
+ PBD::cart_to_azi_ele (x, y, z, azi, ele);
+ PBD::azi_ele_to_cart (azi, ele, x, y, z);
+}
+
+void
+SpeakerDialog::darea_size_allocate (Gtk::Allocation& alloc)
+{
+ width = alloc.get_width();
+ height = alloc.get_height();
+
+ if (height > 100) {
+ width -= 20;
+ height -= 20;
+ }
+}
+
+bool
+SpeakerDialog::darea_button_press_event (GdkEventButton *ev)
+{
+ GdkModifierType state;
+
+ if (ev->type == GDK_2BUTTON_PRESS && ev->button == 1) {
+ return false;
+ }
+
+ drag_index = -1;
+
+ switch (ev->button) {
+ case 1:
+ case 2:
+ find_closest_object (ev->x, ev->y, drag_index);
+ drag_x = (int) floor (ev->x);
+ drag_y = (int) floor (ev->y);
+ state = (GdkModifierType) ev->state;
+
+ return handle_motion (drag_x, drag_y, state);
+ break;
+
+ default:
+ break;
+ }
+
+ return false;
+}
+
+bool
+SpeakerDialog::darea_button_release_event (GdkEventButton *ev)
+{
+ gint x, y;
+ GdkModifierType state;
+ bool ret = false;
+
+ switch (ev->button) {
+ case 1:
+ x = (int) floor (ev->x);
+ y = (int) floor (ev->y);
+ state = (GdkModifierType) ev->state;
+
+ if (Keyboard::modifier_state_contains (state, Keyboard::TertiaryModifier)) {
+
+ for (vector<Speaker>::iterator i = speakers.speakers().begin(); i != speakers.speakers().end(); ++i) {
+ /* XXX DO SOMETHING TO SET SPEAKER BACK TO "normal" */
+ }
+
+ queue_draw ();
+ ret = true;
+
+ } else {
+ ret = handle_motion (x, y, state);
+ }
+
+ break;
+
+ case 2:
+ x = (int) floor (ev->x);
+ y = (int) floor (ev->y);
+ state = (GdkModifierType) ev->state;
+
+ ret = handle_motion (x, y, state);
+ break;
+
+ case 3:
+ break;
+
+ }
+
+ drag_index = -1;
+
+ return ret;
+}
+
+int
+SpeakerDialog::find_closest_object (gdouble x, gdouble y, int& which)
+{
+ float distance;
+ float best_distance = FLT_MAX;
+ int pwhich = -1;
+
+ which = 0;
+ pwhich = 0;
+
+ for (vector<Speaker>::iterator i = speakers.speakers().begin(); i != speakers.speakers().end(); ++i, ++pwhich) {
+
+ Speaker& candidate (*i);
+
+ CartesianVector c;
+
+ candidate.angles().cartesian (c);
+ cart_to_gtk (c);
+
+ distance = sqrt ((c.x - x) * (c.x - x) +
+ (c.y - y) * (c.y - y));
+
+ if (distance < best_distance) {
+ best_distance = distance;
+ which = pwhich;
+ }
+ }
+
+
+ if (best_distance > 20) { // arbitrary
+ return 0;
+ }
+
+ return 1;
+}
+
+bool
+SpeakerDialog::darea_motion_notify_event (GdkEventMotion *ev)
+{
+ gint x, y;
+ GdkModifierType state;
+
+ if (ev->is_hint) {
+ gdk_window_get_pointer (ev->window, &x, &y, &state);
+ } else {
+ x = (int) floor (ev->x);
+ y = (int) floor (ev->y);
+ state = (GdkModifierType) ev->state;
+ }
+
+ return handle_motion (x, y, state);
+}
+
+bool
+SpeakerDialog::handle_motion (gint evx, gint evy, GdkModifierType state)
+{
+ if (drag_index < 0) {
+ return false;
+ }
+
+ if ((state & (GDK_BUTTON1_MASK|GDK_BUTTON2_MASK)) == 0) {
+ return false;
+ }
+
+
+ if (state & GDK_BUTTON1_MASK && !(state & GDK_BUTTON2_MASK)) {
+ CartesianVector c;
+ bool need_move = false;
+ Speaker& moving (speakers.speakers()[drag_index]);
+
+ moving.angles().cartesian (c);
+ cart_to_gtk (c);
+
+ if ((evx != c.x) || (evy != c.y)) {
+ need_move = true;
+ }
+
+ if (need_move) {
+ CartesianVector cp (evx, evy, 0.0);
+
+ /* canonicalize position */
+
+ gtk_to_cart (cp);
+
+ /* position actual signal on circle */
+
+ clamp_to_circle (cp.x, cp.y);
+
+ /* generate an angular representation and set drag target (GUI) position */
+
+ AngularVector a;
+
+ cp.angular (a);
+
+ moving.move (a);
+
+ queue_draw ();
+ }
+ }
+
+ return true;
+}
projects / ardour.git / blobdiff