#include <cstring>
#include <cmath>
+#include <gtkmm/window.h>
+
#include "pbd/controllable.h"
#include "pbd/compose.h"
#include "gtkmm2ext/gtk_ui.h"
#include "gtkmm2ext/keyboard.h"
+#include "ardour/pannable.h"
#include "ardour/panner.h"
+
+#include "ardour_ui.h"
+#include "global_signals.h"
#include "stereo_panner.h"
+#include "rgb_macros.h"
#include "utils.h"
#include "i18n.h"
static const int step_down = 10;
static const int top_step = 2;
-StereoPanner::StereoPanner (boost::shared_ptr<PBD::Controllable> position, boost::shared_ptr<PBD::Controllable> width)
- : position_control (position)
- , width_control (width)
+StereoPanner::ColorScheme StereoPanner::colors[3];
+bool StereoPanner::have_colors = false;
+
+using namespace ARDOUR;
+
+StereoPanner::StereoPanner (boost::shared_ptr<Panner> panner)
+ : _panner (panner)
+ , position_control (_panner->pannable()->pan_azimuth_control)
+ , width_control (_panner->pannable()->pan_width_control)
, dragging (false)
, dragging_position (false)
+ , dragging_left (false)
+ , dragging_right (false)
, drag_start_x (0)
, last_drag_x (0)
+ , accumulated_delta (0)
+ , detented (false)
+ , drag_data_window (0)
+ , drag_data_label (0)
+ , position_binder (position_control)
+ , width_binder (width_control)
{
+ if (!have_colors) {
+ set_colors ();
+ have_colors = true;
+ }
+
position_control->Changed.connect (connections, invalidator(*this), boost::bind (&StereoPanner::value_change, this), gui_context());
width_control->Changed.connect (connections, invalidator(*this), boost::bind (&StereoPanner::value_change, this), gui_context());
- set_tooltip ();
set_flags (Gtk::CAN_FOCUS);
Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK|
Gdk::SCROLL_MASK|
Gdk::POINTER_MOTION_MASK);
+
+ ColorsChanged.connect (sigc::mem_fun (*this, &StereoPanner::color_handler));
}
StereoPanner::~StereoPanner ()
{
+ delete drag_data_window;
}
void
-StereoPanner::set_tooltip ()
+StereoPanner::set_drag_data ()
{
+ if (!drag_data_label) {
+ return;
+ }
+
double pos = position_control->get_value(); // 0..1
- double w = width_control->get_value (); // -1..+1
- int lpos = (int) lrint ((pos - (w/2.0)) * 100.0);
- int rpos = (int) lrint ((pos + (w/2.0)) * 100.0);
-
- Gtkmm2ext::UI::instance()->set_tip (this, string_compose (_("L:%1 R:%2 Width: %3%%"),
- lpos, rpos,
- (int) floor (w * 100.0)).c_str());
+
+ /* We show the position of the center of the image relative to the left & right.
+ This is expressed as a pair of percentage values that ranges from (100,0)
+ (hard left) through (50,50) (hard center) to (0,100) (hard right).
+
+ This is pretty wierd, but its the way audio engineers expect it. Just remember that
+ the center of the USA isn't Kansas, its (50LA, 50NY) and it will all make sense.
+ */
+
+ drag_data_label->set_markup (string_compose (_("L:%1 R:%2 Width: %3%%"),
+ (int) rint (100.0 * (1.0 - pos)),
+ (int) rint (100.0 * pos),
+ (int) floor (100.0 * width_control->get_value())));
}
void
StereoPanner::value_change ()
{
- set_tooltip ();
+ set_drag_data ();
queue_draw ();
}
double pos = position_control->get_value (); /* 0..1 */
double swidth = width_control->get_value (); /* -1..+1 */
double fswidth = fabs (swidth);
+ uint32_t o, f, t, b;
+ State state;
width = get_width();
height = get_height ();
+ if (swidth == 0.0) {
+ state = Mono;
+ } else if (swidth < 0.0) {
+ state = Inverted;
+ } else {
+ state = Normal;
+ }
+
+ o = colors[state].outline;
+ f = colors[state].fill;
+ t = colors[state].text;
+ b = colors[state].background;
+
/* background */
- cairo_set_source_rgb (cr, 0.184, 0.172, 0.172);
+ cairo_set_source_rgba (cr, UINT_RGBA_R_FLT(b), UINT_RGBA_G_FLT(b), UINT_RGBA_B_FLT(b), UINT_RGBA_A_FLT(b));
cairo_rectangle (cr, 0, 0, width, height);
cairo_fill (cr);
- /* compute the outer edges of the L/R boxes based on the current stereo width */
-
- int usable_width = width - lr_box_size;
- int center = lr_box_size/2 + (int) floor (usable_width * pos);
- int left = center - (int) floor (fswidth * usable_width / 2.0); // center of leftmost box
- int right = center + (int) floor (fswidth * usable_width / 2.0); // center of rightmost box
+ /* the usable width is reduced from the real width, because we need space for
+ the two halves of LR boxes that will extend past the actual left/right
+ positions (indicated by the vertical line segment above them).
+ */
+
+ double usable_width = width - lr_box_size;
+
+ /* compute the centers of the L/R boxes based on the current stereo width */
+
+ if (fmod (usable_width,2.0) == 0) {
+ /* even width, but we need odd, so that there is an exact center.
+ So, offset cairo by 1, and reduce effective width by 1
+ */
+ usable_width -= 1.0;
+ cairo_translate (cr, 1.0, 0.0);
+ }
- // cerr << "pos " << pos << " width = " << width << " swidth = " << swidth << " center @ " << center << " L = " << left << " R = " << right << endl;
+ double center = (lr_box_size/2.0) + (usable_width * pos);
+ const double pan_spread = (fswidth * usable_width)/2.0;
+ const double half_lr_box = lr_box_size/2.0;
+ int left;
+ int right;
+
+ left = center - pan_spread; // center of left box
+ right = center + pan_spread; // center of right box
/* compute & draw the line through the box */
cairo_set_line_width (cr, 2);
- cairo_set_source_rgba (cr, 0.3137, 0.4431, 0.7843, 1.0);
+ cairo_set_source_rgba (cr, UINT_RGBA_R_FLT(o), UINT_RGBA_G_FLT(o), UINT_RGBA_B_FLT(o), UINT_RGBA_A_FLT(o));
cairo_move_to (cr, left, top_step+(pos_box_size/2)+step_down);
cairo_line_to (cr, left, top_step+(pos_box_size/2));
cairo_line_to (cr, right, top_step+(pos_box_size/2));
cairo_line_to (cr, right, top_step+(pos_box_size/2) + step_down);
cairo_stroke (cr);
- if (swidth < 0.0) {
- /* flip where the L/R boxes are drawn */
- swap (left, right);
- }
-
/* left box */
- left -= lr_box_size/2;
- right -= lr_box_size/2;
-
cairo_rectangle (cr,
- left,
- (lr_box_size/2)+step_down,
+ left - half_lr_box,
+ half_lr_box+step_down,
lr_box_size, lr_box_size);
- cairo_set_source_rgba (cr, 0.3137, 0.4431, 0.7843, 1.0);
+ cairo_set_source_rgba (cr, UINT_RGBA_R_FLT(o), UINT_RGBA_G_FLT(o), UINT_RGBA_B_FLT(o), UINT_RGBA_A_FLT(o));
cairo_stroke_preserve (cr);
- cairo_set_source_rgba (cr, 0.4509, 0.7686, 0.8627, 0.8);
+ cairo_set_source_rgba (cr, UINT_RGBA_R_FLT(f), UINT_RGBA_G_FLT(f), UINT_RGBA_B_FLT(f), UINT_RGBA_A_FLT(f));
cairo_fill (cr);
/* add text */
cairo_move_to (cr,
- left + 3,
+ left - half_lr_box + 3,
(lr_box_size/2) + step_down + 13);
- cairo_set_source_rgba (cr, 0.129, 0.054, 0.588, 1.0);
cairo_select_font_face (cr, "sans-serif", CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_BOLD);
- cairo_show_text (cr, "L");
+
+ if (state != Mono) {
+ cairo_set_source_rgba (cr, UINT_RGBA_R_FLT(t), UINT_RGBA_G_FLT(t), UINT_RGBA_B_FLT(t), UINT_RGBA_A_FLT(t));
+ if (swidth < 0.0) {
+ cairo_show_text (cr, _("R"));
+ } else {
+ cairo_show_text (cr, _("L"));
+ }
+ }
/* right box */
cairo_rectangle (cr,
- right,
- (lr_box_size/2)+step_down,
+ right - half_lr_box,
+ half_lr_box+step_down,
lr_box_size, lr_box_size);
- cairo_set_source_rgba (cr, 0.3137, 0.4431, 0.7843, 1.0);
+ cairo_set_source_rgba (cr, UINT_RGBA_R_FLT(o), UINT_RGBA_G_FLT(o), UINT_RGBA_B_FLT(o), UINT_RGBA_A_FLT(o));
cairo_stroke_preserve (cr);
- cairo_set_source_rgba (cr, 0.4509, 0.7686, 0.8627, 0.8);
+ cairo_set_source_rgba (cr, UINT_RGBA_R_FLT(f), UINT_RGBA_G_FLT(f), UINT_RGBA_B_FLT(f), UINT_RGBA_A_FLT(f));
cairo_fill (cr);
/* add text */
cairo_move_to (cr,
- right + 3,
+ right - half_lr_box + 3,
(lr_box_size/2)+step_down + 13);
- cairo_set_source_rgba (cr, 0.129, 0.054, 0.588, 1.0);
- cairo_show_text (cr, "R");
+ cairo_set_source_rgba (cr, UINT_RGBA_R_FLT(t), UINT_RGBA_G_FLT(t), UINT_RGBA_B_FLT(t), UINT_RGBA_A_FLT(t));
+
+ if (state == Mono) {
+ cairo_show_text (cr, _("M"));
+ } else {
+ if (swidth < 0.0) {
+ cairo_show_text (cr, _("L"));
+ } else {
+ cairo_show_text (cr, _("R"));
+ }
+ }
/* draw the central box */
cairo_set_line_width (cr, 1);
- cairo_rectangle (cr, center - (pos_box_size/2), top_step, pos_box_size, pos_box_size);
- cairo_set_source_rgba (cr, 0.3137, 0.4431, 0.7843, 1.0);
+ cairo_rectangle (cr, lrint (center - (pos_box_size/2.0)), top_step, pos_box_size, pos_box_size);
+ cairo_set_source_rgba (cr, UINT_RGBA_R_FLT(o), UINT_RGBA_G_FLT(o), UINT_RGBA_B_FLT(o), UINT_RGBA_A_FLT(o));
cairo_stroke_preserve (cr);
- cairo_set_source_rgba (cr, 0.4509, 0.7686, 0.8627, 0.8);
+ cairo_set_source_rgba (cr, UINT_RGBA_R_FLT(f), UINT_RGBA_G_FLT(f), UINT_RGBA_B_FLT(f), UINT_RGBA_A_FLT(f));
cairo_fill (cr);
/* done */
{
drag_start_x = ev->x;
last_drag_x = ev->x;
+
+ dragging_position = false;
+ dragging_left = false;
+ dragging_right = false;
+ dragging = false;
+ accumulated_delta = 0;
+ detented = false;
+
+ /* Let the binding proxies get first crack at the press event
+ */
if (ev->y < 20) {
- /* top section of widget is for position drags */
- dragging_position = true;
+ if (position_binder.button_press_handler (ev)) {
+ return true;
+ }
} else {
- dragging_position = false;
+ if (width_binder.button_press_handler (ev)) {
+ return true;
+ }
+ }
+
+ if (ev->button != 1) {
+ return false;
}
if (ev->type == GDK_2BUTTON_PRESS) {
- if (dragging_position) {
- cerr << "Reset pos\n";
- position_control->set_value (0.5); // reset position to center
+ int width = get_width();
+
+ if (Keyboard::modifier_state_contains (ev->state, Keyboard::TertiaryModifier)) {
+ /* handled by button release */
+ return true;
+ }
+
+ if (ev->y < 20) {
+
+ /* upper section: adjusts position, constrained by width */
+
+ const double w = width_control->get_value ();
+ const double max_pos = 1.0 - (w/2.0);
+ const double min_pos = w/2.0;
+
+ if (ev->x <= width/3) {
+ /* left side dbl click */
+ if (Keyboard::modifier_state_contains (ev->state, Keyboard::SecondaryModifier)) {
+ /* 2ndary-double click on left, collapse to hard left */
+ width_control->set_value (0);
+ position_control->set_value (0);
+ } else {
+ position_control->set_value (min_pos);
+ }
+ } else if (ev->x > 2*width/3) {
+ if (Keyboard::modifier_state_contains (ev->state, Keyboard::SecondaryModifier)) {
+ /* 2ndary-double click on right, collapse to hard right */
+ width_control->set_value (0);
+ position_control->set_value (1.0);
+ } else {
+ position_control->set_value (max_pos);
+ }
+ } else {
+ position_control->set_value (0.5);
+ }
+
} else {
- cerr << "Reset width\n";
- width_control->set_value (1.0); // reset position to full, LR
+
+ /* lower section: adjusts width, constrained by position */
+
+ const double p = position_control->get_value ();
+ const double max_width = 2.0 * min ((1.0 - p), p);
+
+ if (ev->x <= width/3) {
+ /* left side dbl click */
+ width_control->set_value (max_width); // reset width to 100%
+ } else if (ev->x > 2*width/3) {
+ /* right side dbl click */
+ width_control->set_value (-max_width); // reset width to inverted 100%
+ } else {
+ /* center dbl click */
+ width_control->set_value (0); // collapse width to 0%
+ }
}
+
dragging = false;
- } else {
+
+ } else if (ev->type == GDK_BUTTON_PRESS) {
+
+ if (Keyboard::modifier_state_contains (ev->state, Keyboard::TertiaryModifier)) {
+ /* handled by button release */
+ return true;
+ }
+
+ if (ev->y < 20) {
+ /* top section of widget is for position drags */
+ dragging_position = true;
+ StartPositionGesture ();
+ } else {
+ /* lower section is for dragging width */
+
+ double pos = position_control->get_value (); /* 0..1 */
+ double swidth = width_control->get_value (); /* -1..+1 */
+ double fswidth = fabs (swidth);
+ int usable_width = get_width() - lr_box_size;
+ double center = (lr_box_size/2.0) + (usable_width * pos);
+ int left = lrint (center - (fswidth * usable_width / 2.0)); // center of leftmost box
+ int right = lrint (center + (fswidth * usable_width / 2.0)); // center of rightmost box
+ const int half_box = lr_box_size/2;
+
+ if (ev->x >= (left - half_box) && ev->x < (left + half_box)) {
+ if (swidth < 0.0) {
+ dragging_right = true;
+ } else {
+ dragging_left = true;
+ }
+ } else if (ev->x >= (right - half_box) && ev->x < (right + half_box)) {
+ if (swidth < 0.0) {
+ dragging_left = true;
+ } else {
+ dragging_right = true;
+ }
+ }
+ StartWidthGesture ();
+ }
+
dragging = true;
}
bool
StereoPanner::on_button_release_event (GdkEventButton* ev)
{
+ if (ev->button != 1) {
+ return false;
+ }
+
+ bool dp = dragging_position;
+
dragging = false;
dragging_position = false;
+ dragging_left = false;
+ dragging_right = false;
+ accumulated_delta = 0;
+ detented = false;
+
+ if (drag_data_window) {
+ drag_data_window->hide ();
+ }
+
+ if (Keyboard::modifier_state_contains (ev->state, Keyboard::TertiaryModifier)) {
+ /* reset to default */
+ position_control->set_value (0.5);
+ width_control->set_value (1.0);
+ } else {
+ if (dp) {
+ StopPositionGesture ();
+ } else {
+ StopWidthGesture ();
+ }
+ }
+
return true;
}
bool
StereoPanner::on_scroll_event (GdkEventScroll* ev)
{
- double one_degree = 1.0/180.0;
+ double one_degree = 1.0/180.0; // one degree as a number from 0..1, since 180 degrees is the full L/R axis
double pv = position_control->get_value(); // 0..1.0 ; 0 = left
double wv = width_control->get_value(); // 0..1.0 ; 0 = left
double step;
return false;
}
- int w = get_width();
- double delta = (abs (ev->x - last_drag_x)) / (w/2.0);
- int drag_dir = 0;
-
- if (!dragging_position) {
- double wv = width_control->get_value();
- int inc;
- double old_wv;
- double opx; // compute the operational x-coordinate given the current pos+width
+ if (!drag_data_window) {
+ drag_data_window = new Window (WINDOW_POPUP);
+ drag_data_window->set_position (WIN_POS_MOUSE);
+ drag_data_window->set_decorated (false);
- if (wv > 0) {
- /* positive value: increasing width means adding */
- inc = 1;
- } else {
- /* positive value: increasing width means subtracting */
- inc = -1;
+ drag_data_label = manage (new Label);
+ drag_data_label->set_use_markup (true);
+
+ drag_data_window->set_border_width (6);
+ drag_data_window->add (*drag_data_label);
+ drag_data_label->show ();
+
+ Window* toplevel = dynamic_cast<Window*> (get_toplevel());
+ if (toplevel) {
+ drag_data_window->set_transient_for (*toplevel);
}
+ }
- if (drag_start_x < w/2) {
- /* started left of center */
+ if (!drag_data_window->is_visible ()) {
+ /* move the window a little away from the mouse */
+ drag_data_window->move (ev->x_root+30, ev->y_root+30);
+ drag_data_window->present ();
+ }
- opx = position_control->get_value() - (wv/2.0);
+ int w = get_width();
+ double delta = (ev->x - last_drag_x) / (double) w;
+ double current_width = width_control->get_value ();
+
+ if (dragging_left) {
+ delta = -delta;
+ }
- if (opx < 0.5) {
- /* still left */
- if (ev->x > last_drag_x) {
- /* motion to left */
- drag_dir = -inc;
- } else {
- drag_dir = inc;
- }
- } else {
- /* now right */
- if (ev->x > last_drag_x) {
- /* motion to left */
- drag_dir = inc;
- } else {
- drag_dir = -inc;
- }
- }
- } else {
- /* started right of center */
-
- opx = position_control->get_value() + (wv/2.0);
+ if (dragging_left || dragging_right) {
- if (opx > 0.5) {
- /* still right */
- if (ev->x < last_drag_x) {
- /* motion to right */
- drag_dir = -inc;
- } else {
- drag_dir = inc;
- }
- } else {
- /* now left */
- if (ev->x < last_drag_x) {
- /* motion to right */
- drag_dir = inc;
- } else {
- drag_dir = -inc;
- }
- }
+ /* maintain position as invariant as we change the width */
- }
- old_wv = wv;
- wv = wv + (drag_dir * delta);
+ /* create a detent close to the center */
+
+ if (!detented && fabs (current_width) < 0.02) {
+ detented = true;
+ /* snap to zero */
+ width_control->set_value (0);
+ }
- width_control->set_value (wv);
+ if (detented) {
- } else {
+ accumulated_delta += delta;
- double pv = position_control->get_value(); // 0..1.0 ; 0 = left
-
- if (ev->x > last_drag_x) { // increasing
- pv = pv + delta;
+ /* have we pulled far enough to escape ? */
+
+ if (fabs (accumulated_delta) >= 0.025) {
+ width_control->set_value (current_width + accumulated_delta);
+ detented = false;
+ accumulated_delta = false;
+ }
+
} else {
- pv = pv - delta;
+ width_control->set_value (current_width + delta);
}
- position_control->set_value (pv);
+ } else if (dragging_position) {
+
+ double pv = position_control->get_value(); // 0..1.0 ; 0 = left
+ position_control->set_value (pv + delta);
}
last_drag_x = ev->x;
step = one_degree * 5.0;
}
+ /* up/down control width because we consider pan position more "important"
+ (and thus having higher "sense" priority) than width.
+ */
+
switch (ev->keyval) {
case GDK_Up:
- wv += step;
- width_control->set_value (wv);
+ if (Keyboard::modifier_state_equals (ev->state, Keyboard::SecondaryModifier)) {
+ width_control->set_value (1.0);
+ } else {
+ width_control->set_value (wv + step);
+ }
break;
+ case GDK_Down:
+ if (Keyboard::modifier_state_equals (ev->state, Keyboard::SecondaryModifier)) {
+ width_control->set_value (-1.0);
+ } else {
+ width_control->set_value (wv - step);
+ }
+
case GDK_Left:
pv -= step;
position_control->set_value (pv);
pv += step;
position_control->set_value (pv);
break;
- case GDK_Down:
- wv -= step;
- width_control->set_value (wv);
+
+ break;
+ case GDK_0:
+ case GDK_KP_0:
+ width_control->set_value (0.0);
break;
- default:
- return forward_key_press (ev);
+
+ default:
+ return false;
}
return true;
Keyboard::magic_widget_drop_focus ();
return false;
}
+
+void
+StereoPanner::set_colors ()
+{
+ colors[Normal].fill = ARDOUR_UI::config()->canvasvar_StereoPannerFill.get();
+ colors[Normal].outline = ARDOUR_UI::config()->canvasvar_StereoPannerOutline.get();
+ colors[Normal].text = ARDOUR_UI::config()->canvasvar_StereoPannerText.get();
+ colors[Normal].background = ARDOUR_UI::config()->canvasvar_StereoPannerBackground.get();
+ colors[Normal].rule = ARDOUR_UI::config()->canvasvar_StereoPannerRule.get();
+
+ colors[Mono].fill = ARDOUR_UI::config()->canvasvar_StereoPannerMonoFill.get();
+ colors[Mono].outline = ARDOUR_UI::config()->canvasvar_StereoPannerMonoOutline.get();
+ colors[Mono].text = ARDOUR_UI::config()->canvasvar_StereoPannerMonoText.get();
+ colors[Mono].background = ARDOUR_UI::config()->canvasvar_StereoPannerMonoBackground.get();
+ colors[Mono].rule = ARDOUR_UI::config()->canvasvar_StereoPannerRule.get();
+
+ colors[Inverted].fill = ARDOUR_UI::config()->canvasvar_StereoPannerInvertedFill.get();
+ colors[Inverted].outline = ARDOUR_UI::config()->canvasvar_StereoPannerInvertedOutline.get();
+ colors[Inverted].text = ARDOUR_UI::config()->canvasvar_StereoPannerInvertedText.get();
+ colors[Inverted].background = ARDOUR_UI::config()->canvasvar_StereoPannerInvertedBackground.get();
+ colors[Inverted].rule = ARDOUR_UI::config()->canvasvar_StereoPannerRule.get();
+}
+
+void
+StereoPanner::color_handler ()
+{
+ set_colors ();
+ queue_draw ();
+}