more stereo panner work
git-svn-id: svn://localhost/ardour2/branches/3.0@8149 d708f5d6-7413-0410-9779-e7cbd77b26cf
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@ -103,7 +103,7 @@ StereoPanner::on_expose_event (GdkEventExpose* ev)
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int left = center - (int) floor (fswidth * usable_width / 2.0); // center of leftmost box
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int right = center + (int) floor (fswidth * usable_width / 2.0); // center of rightmost box
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cerr << "pos " << pos << " width = " << width << " swidth = " << swidth << " center @ " << center << " L = " << left << " R = " << right << endl;
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// cerr << "pos " << pos << " width = " << width << " swidth = " << swidth << " center @ " << center << " L = " << left << " R = " << right << endl;
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/* compute & draw the line through the box */
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@ -183,12 +183,8 @@ StereoPanner::on_button_press_event (GdkEventButton* ev)
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drag_start_x = ev->x;
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last_drag_x = ev->x;
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/* center 8 pixels are for position drag */
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int w = get_width();
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double pos = position_control->get_value ();
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if ((ev->x >= (int) floor ((pos * w)-(pos_box_size/2))) && (ev->x <= (int) floor ((pos * w)+(pos_box_size/2)))) {
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if (ev->y < 20) {
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/* top section of widget is for position drags */
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dragging_position = true;
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} else {
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dragging_position = false;
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@ -218,6 +214,12 @@ StereoPanner::on_button_release_event (GdkEventButton* ev)
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return true;
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}
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bool
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StereoPanner::on_scroll_event (GdkEventScroll* ev)
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{
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return true;
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}
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bool
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StereoPanner::on_motion_notify_event (GdkEventMotion* ev)
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{
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@ -226,18 +228,72 @@ StereoPanner::on_motion_notify_event (GdkEventMotion* ev)
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}
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int w = get_width();
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float delta = (abs (ev->x - last_drag_x)) / (double) (w/2);
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double delta = (abs (ev->x - last_drag_x)) / (w/2.0);
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int drag_dir = 0;
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if (!dragging_position) {
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double wv = width_control->get_value();
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int inc;
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double old_wv;
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double opx; // compute the operational x-coordinate given the current pos+width
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if (((drag_start_x < w/2) && ev->x > last_drag_x) || // start left of center, move towards it
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((drag_start_x > w/2) && ev->x < last_drag_x)) { // start right of center, move towards it
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wv = wv * (1.0 - delta);
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if (wv > 0) {
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/* positive value: increasing width means adding */
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inc = 1;
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} else {
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/* moving out, so increase the width */
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wv = wv * (1.0 + delta);
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/* positive value: increasing width means subtracting */
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inc = -1;
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}
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if (drag_start_x < w/2) {
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/* started left of center */
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opx = position_control->get_value() - (wv/2.0);
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if (opx < 0.5) {
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/* still left */
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if (ev->x > last_drag_x) {
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/* motion to left */
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drag_dir = -inc;
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} else {
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drag_dir = inc;
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}
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} else {
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/* now right */
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if (ev->x > last_drag_x) {
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/* motion to left */
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drag_dir = inc;
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} else {
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drag_dir = -inc;
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}
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}
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} else {
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/* started right of center */
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opx = position_control->get_value() + (wv/2.0);
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if (opx > 0.5) {
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/* still right */
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if (ev->x < last_drag_x) {
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/* motion to right */
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drag_dir = -inc;
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} else {
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drag_dir = inc;
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}
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} else {
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/* now left */
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if (ev->x < last_drag_x) {
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/* motion to right */
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drag_dir = inc;
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} else {
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drag_dir = -inc;
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}
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}
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}
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old_wv = wv;
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wv = wv + (drag_dir * delta);
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width_control->set_value (wv);
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@ -40,6 +40,7 @@ class StereoPanner : public Gtk::DrawingArea
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bool on_button_press_event (GdkEventButton*);
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bool on_button_release_event (GdkEventButton*);
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bool on_motion_notify_event (GdkEventMotion*);
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bool on_scroll_event (GdkEventScroll*);
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private:
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boost::shared_ptr<PBD::Controllable> position_control;
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@ -116,6 +116,7 @@ StreamPanner::PanControllable::set_value (double val)
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switch (parameter().id()) {
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case 100:
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/* position */
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val = max (min (val, 1.0), 0.0);
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if (p.set_stereo_pan (val, p.width_control()->get_value())) {
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AutomationControl::set_value(val);
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}
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@ -123,6 +124,7 @@ StreamPanner::PanControllable::set_value (double val)
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case 200:
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/* width */
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val = max (min (val, 1.0), -1.0);
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if (p.set_stereo_pan (p.direction_control()->get_value(), val)) {
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AutomationControl::set_value(val);
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}
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@ -1475,7 +1477,7 @@ Panner::set_stereo_pan (double direction_as_lr_fract, double width)
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_streampanners[l_index]->set_position (AngularVector (l_pos, 0.0));
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_streampanners[r_index]->set_position (AngularVector (r_pos, 0.0));
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cerr << "left @ " << BaseStereoPanner::azimuth_to_lr_fract (l_pos) << " right @ " << BaseStereoPanner::azimuth_to_lr_fract (r_pos) << endl;
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// cerr << "left @ " << BaseStereoPanner::azimuth_to_lr_fract (l_pos) << " right @ " << BaseStereoPanner::azimuth_to_lr_fract (r_pos) << endl;
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}
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return move_left && move_right;
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