2 Copyright (C) 2011 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #include "pbd/cartesian.h"
22 #include "gtkmm2ext/keyboard.h"
24 #include "speaker_dialog.h"
28 using namespace ARDOUR;
32 using namespace Gtkmm2ext;
34 SpeakerDialog::SpeakerDialog ()
35 : ArdourDialog (_("Speaker Configuration"))
36 , aspect_frame ("", 0.5, 0.5, 1.0, false)
37 , azimuth_adjustment (0, 0.0, 360.0, 10.0, 1.0)
38 , azimuth_spinner (azimuth_adjustment)
39 , add_speaker_button (_("Add Speaker"))
40 , use_system_button (_("Use System"))
43 side_vbox.set_homogeneous (false);
44 side_vbox.set_border_width (9);
45 side_vbox.set_spacing (6);
46 side_vbox.pack_start (azimuth_spinner, false, false);
47 side_vbox.pack_start (add_speaker_button, false, false);
48 side_vbox.pack_start (use_system_button, false, false);
50 aspect_frame.set_size_request (200, 200);
51 aspect_frame.set_shadow_type (SHADOW_NONE);
52 aspect_frame.add (darea);
55 hbox.set_border_width (6);
56 hbox.pack_start (aspect_frame, true, true);
57 hbox.pack_start (side_vbox, false, false);
59 get_vbox()->pack_start (hbox);
60 get_vbox()->show_all ();
62 darea.add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK|Gdk::POINTER_MOTION_MASK);
64 darea.signal_size_allocate().connect (sigc::mem_fun (*this, &SpeakerDialog::darea_size_allocate));
65 darea.signal_expose_event().connect (sigc::mem_fun (*this, &SpeakerDialog::darea_expose_event));
66 darea.signal_button_press_event().connect (sigc::mem_fun (*this, &SpeakerDialog::darea_button_press_event));
67 darea.signal_button_release_event().connect (sigc::mem_fun (*this, &SpeakerDialog::darea_button_release_event));
68 darea.signal_motion_notify_event().connect (sigc::mem_fun (*this, &SpeakerDialog::darea_motion_notify_event));
70 add_speaker_button.signal_clicked().connect (sigc::mem_fun (*this, &SpeakerDialog::add_speaker));
76 SpeakerDialog::set_speakers (boost::shared_ptr<Speakers> s)
82 SpeakerDialog::get_speakers () const
88 SpeakerDialog::darea_expose_event (GdkEventExpose* event)
93 cr = gdk_cairo_create (darea.get_window()->gobj());
95 cairo_set_line_width (cr, 1.0);
97 cairo_rectangle (cr, event->area.x, event->area.y, event->area.width, event->area.height);
98 cairo_set_source_rgba (cr, 0.1, 0.1, 0.1, 1.0);
99 cairo_fill_preserve (cr);
102 cairo_translate (cr, x_origin, y_origin);
104 /* horizontal line of "crosshairs" */
106 cairo_set_source_rgb (cr, 0.0, 0.1, 0.7);
107 cairo_move_to (cr, 0.5, height/2.0+0.5);
108 cairo_line_to (cr, width+0.5, height/2+0.5);
111 /* vertical line of "crosshairs" */
113 cairo_move_to (cr, width/2+0.5, 0.5);
114 cairo_line_to (cr, width/2+0.5, height+0.5);
117 /* the circle on which signals live */
119 cairo_arc (cr, width/2, height/2, height/2, 0, 2.0 * M_PI);
124 cairo_select_font_face (cr, "sans", CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_NORMAL);
127 cairo_set_font_size (cr, 10);
130 cairo_set_font_size (cr, 16);
135 for (vector<Speaker>::iterator i = speakers.speakers().begin(); i != speakers.speakers().end(); ++i) {
138 CartesianVector c (s.coords());
142 x = (gint) floor (c.x);
143 y = (gint) floor (c.y);
145 /* XXX need to shift circles so that they are centered on the circle */
147 cairo_arc (cr, x, y, arc_radius, 0, 2.0 * M_PI);
148 cairo_set_source_rgb (cr, 0.8, 0.2, 0.1);
149 cairo_close_path (cr);
152 cairo_move_to (cr, x + 6, y + 6);
155 snprintf (buf, sizeof (buf), "%d:%d", n+1, (int) lrint (s.angles().azi));
156 cairo_show_text (cr, buf);
167 SpeakerDialog::cart_to_gtk (CartesianVector& c) const
169 /* "c" uses a coordinate space that is:
172 dimension = 2.0 * 2.0
173 so max values along each axis are -1..+1
175 GTK uses a coordinate space that is:
178 dimension = width * height
179 so max values along each axis are 0,width and
183 c.x = (width / 2) * (c.x + 1);
184 c.y = (height / 2) * (1 - c.y);
186 /* XXX z-axis not handled - 2D for now */
190 SpeakerDialog::gtk_to_cart (CartesianVector& c) const
192 c.x = (c.x / (width / 2.0)) - 1.0;
193 c.y = -((c.y / (height / 2.0)) - 1.0);
195 /* XXX z-axis not handled - 2D for now */
199 SpeakerDialog::clamp_to_circle (double& x, double& y)
205 PBD::cartesian_to_spherical (x, y, z, azi, ele, l);
206 PBD::spherical_to_cartesian (azi, ele, 1.0, x, y, z);
210 SpeakerDialog::darea_size_allocate (Gtk::Allocation& alloc)
212 width = alloc.get_width();
213 height = alloc.get_height();
220 x_origin = (alloc.get_width() - width) / 2;
221 y_origin = (alloc.get_height() - height) / 2;
225 SpeakerDialog::darea_button_press_event (GdkEventButton *ev)
227 GdkModifierType state;
229 if (ev->type == GDK_2BUTTON_PRESS && ev->button == 1) {
235 switch (ev->button) {
239 drag_index = find_closest_object (ev->x, ev->y);
240 int const drag_x = (int) floor (ev->x);
241 int const drag_y = (int) floor (ev->y);
242 state = (GdkModifierType) ev->state;
244 if (drag_index >= 0) {
246 speakers.speakers()[drag_index].angles().cartesian (c);
248 drag_offset_x = drag_x - x_origin - c.x;
249 drag_offset_y = drag_y - y_origin - c.y;
252 return handle_motion (drag_x, drag_y, state);
264 SpeakerDialog::darea_button_release_event (GdkEventButton *ev)
267 GdkModifierType state;
270 switch (ev->button) {
272 x = (int) floor (ev->x);
273 y = (int) floor (ev->y);
274 state = (GdkModifierType) ev->state;
276 if (Keyboard::modifier_state_contains (state, Keyboard::TertiaryModifier)) {
278 for (vector<Speaker>::iterator i = speakers.speakers().begin(); i != speakers.speakers().end(); ++i) {
279 /* XXX DO SOMETHING TO SET SPEAKER BACK TO "normal" */
286 ret = handle_motion (x, y, state);
292 x = (int) floor (ev->x);
293 y = (int) floor (ev->y);
294 state = (GdkModifierType) ev->state;
296 ret = handle_motion (x, y, state);
310 SpeakerDialog::find_closest_object (gdouble x, gdouble y)
313 float best_distance = FLT_MAX;
317 for (vector<Speaker>::iterator i = speakers.speakers().begin(); i != speakers.speakers().end(); ++i, ++n) {
319 Speaker& candidate (*i);
322 candidate.angles().cartesian (c);
325 distance = sqrt ((c.x - x) * (c.x - x) +
326 (c.y - y) * (c.y - y));
329 if (distance < best_distance) {
330 best_distance = distance;
335 if (best_distance > 20) { // arbitrary
343 SpeakerDialog::darea_motion_notify_event (GdkEventMotion *ev)
346 GdkModifierType state;
349 gdk_window_get_pointer (ev->window, &x, &y, &state);
351 x = (int) floor (ev->x);
352 y = (int) floor (ev->y);
353 state = (GdkModifierType) ev->state;
356 return handle_motion (x, y, state);
360 SpeakerDialog::handle_motion (gint evx, gint evy, GdkModifierType state)
362 if (drag_index < 0) {
366 if ((state & (GDK_BUTTON1_MASK|GDK_BUTTON2_MASK)) == 0) {
370 /* correct event coordinates to have their origin at the corner of our graphic
371 rather than the corner of our allocation */
373 double obx = evx - x_origin;
374 double oby = evy - y_origin;
376 /* and compensate for any distance between the mouse pointer and the centre
377 of the object being dragged */
379 obx -= drag_offset_x;
380 oby -= drag_offset_y;
382 if (state & GDK_BUTTON1_MASK && !(state & GDK_BUTTON2_MASK)) {
384 bool need_move = false;
385 Speaker& moving (speakers.speakers()[drag_index]);
387 moving.angles().cartesian (c);
390 if (obx != c.x || oby != c.y) {
395 CartesianVector cp (obx, oby, 0.0);
397 /* canonicalize position */
401 /* position actual signal on circle */
403 clamp_to_circle (cp.x, cp.y);
405 /* generate an angular representation and set drag target (GUI) position */
421 SpeakerDialog::add_speaker ()
423 speakers.add_speaker (PBD::AngularVector (0, 0, 0));