#include <iostream>
#include <iomanip>
#include <cstring>
+#include <cmath>
+
+#include <gtkmm/window.h>
#include "pbd/controllable.h"
+#include "pbd/compose.h"
#include "gtkmm2ext/gui_thread.h"
+#include "gtkmm2ext/gtk_ui.h"
+#include "gtkmm2ext/keyboard.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"
using namespace std;
using namespace Gtk;
+using namespace Gtkmm2ext;
+
+static const int pos_box_size = 10;
+static const int lr_box_size = 15;
+static const int step_down = 10;
+static const int top_step = 2;
+
+StereoPanner::ColorScheme StereoPanner::colors[3];
+bool StereoPanner::have_colors = false;
+PBD::Signal0<void> StereoPanner::color_change;
StereoPanner::StereoPanner (boost::shared_ptr<PBD::Controllable> position, boost::shared_ptr<PBD::Controllable> width)
: position_control (position)
, width_control (width)
, dragging (false)
, dragging_position (false)
+ , dragging_left (false)
+ , dragging_right (false)
, drag_start_x (0)
, last_drag_x (0)
+ , accumulated_delta (0)
+ , drag_data_window (0)
+ , drag_data_label (0)
{
- set_size_request (-1, 15);
+ if (!have_colors) {
+ set_colors ();
+ have_colors = true;
+ }
- position_control->Changed.connect (connections, invalidator(*this), boost::bind (&DrawingArea::queue_draw, this), gui_context());
- width_control->Changed.connect (connections, invalidator(*this), boost::bind (&DrawingArea::queue_draw, this), gui_context());
-
- add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK|Gdk::SCROLL_MASK|Gdk::POINTER_MOTION_MASK);
+ 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);
+
+ add_events (Gdk::ENTER_NOTIFY_MASK|Gdk::LEAVE_NOTIFY_MASK|
+ Gdk::KEY_PRESS_MASK|Gdk::KEY_RELEASE_MASK|
+ Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK|
+ Gdk::SCROLL_MASK|
+ Gdk::POINTER_MOTION_MASK);
+
+ color_change.connect (connections, invalidator (*this), boost::bind (&DrawingArea::queue_draw, this), gui_context());
}
StereoPanner::~StereoPanner ()
{
+ delete drag_data_window;
+}
+
+void
+StereoPanner::set_tooltip ()
+{
+ Gtkmm2ext::UI::instance()->set_tip (this,
+ string_compose (_("0 -> set width to zero (mono)\n%1-uparrow -> set width to 100\n%1-downarrow -> set width to -100"),
+
+ Keyboard::secondary_modifier_name()).c_str());
+}
+
+void
+StereoPanner::unset_tooltip ()
+{
+ Gtkmm2ext::UI::instance()->set_tip (this, "");
+}
+
+void
+StereoPanner::set_drag_data ()
+{
+ if (!drag_data_label) {
+ return;
+ }
+
+ double pos = position_control->get_value(); // 0..1
+
+ /* 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_drag_data ();
+ queue_draw ();
}
bool
cairo_t* cr = gdk_cairo_create (win->gobj());
- int x1, x2;
int width, height;
double pos = position_control->get_value (); /* 0..1 */
double swidth = width_control->get_value (); /* -1..+1 */
- const int pos_box_size = 5;
+ double fswidth = fabs (swidth);
+ uint32_t o, f, t, b;
+ State state;
width = get_width();
height = get_height ();
- /* compute where the central box is */
+ if (swidth == 0.0) {
+ state = Mono;
+ } else if (swidth < 0.0) {
+ state = Inverted;
+ } else {
+ state = Normal;
+ }
- x1 = (int) floor (width * pos);
- x1 -= pos_box_size/2;
+ o = colors[state].outline;
+ f = colors[state].fill;
+ t = colors[state].text;
+ b = colors[state].background;
- cairo_set_source_rgb (cr, 255, 0, 0);
- cairo_rectangle (cr, x1, 4, pos_box_size, pos_box_size);
- cairo_fill (cr);
+ /* background */
- /* compute & draw the line through the box */
+ 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);
- x2 = x1 - (int) floor ((fabs (swidth) * width)/2.0); // center, then back up half the swidth value
+ /* 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).
+ */
- cairo_set_source_rgb (cr, 0, 255, 0);
- cairo_move_to (cr, x2, 4+(pos_box_size/2));
- cairo_line_to (cr, x2 + floor ((fabs (swidth * width))), 4+(pos_box_size/2));
+ 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);
+ }
+
+ 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, 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);
+ /* left box */
+
+ cairo_rectangle (cr,
+ left - half_lr_box,
+ half_lr_box+step_down,
+ lr_box_size, lr_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, 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 - half_lr_box + 3,
+ (lr_box_size/2) + step_down + 13);
+ cairo_select_font_face (cr, "sans-serif", CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_BOLD);
+
+ 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 - half_lr_box,
+ half_lr_box+step_down,
+ lr_box_size, lr_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, 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 - half_lr_box + 3,
+ (lr_box_size/2)+step_down + 13);
+ 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, 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, UINT_RGBA_R_FLT(f), UINT_RGBA_G_FLT(f), UINT_RGBA_B_FLT(f), UINT_RGBA_A_FLT(f));
+ cairo_fill (cr);
+
+ /* done */
+
cairo_destroy (cr);
return true;
}
{
drag_start_x = ev->x;
last_drag_x = ev->x;
+
+ dragging_position = false;
+ dragging_left = false;
+ dragging_right = false;
+ accumulated_delta = 0;
- /* center 8 pixels are for position drag */
-
- int w = get_width();
- double pos = position_control->get_value ();
-
- if ((ev->x >= (int) floor ((pos * w)-4)) && (ev->x <= (int) floor ((pos * w)+4))) {
+ if (ev->y < 20) {
+ /* top section of widget is for position drags */
dragging_position = true;
} else {
- dragging_position = false;
+ /* 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)) {
+ dragging_left = true;
+ } else if (ev->x >= (right - half_box) && ev->x < (right + half_box)) {
+ dragging_right = true;
+ }
+
}
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 (ev->x >= width/2 - 10 && ev->x <= width/2 + 10) {
+ /* double click near center, reset position to center */
+ position_control->set_value (0.5);
+ } else {
+ if (ev->x < width/2) {
+ /* double click on left, collapse to hard left */
+ width_control->set_value (0);
+ position_control->set_value (0);
+ } else {
+ /* double click on right, collapse to hard right */
+ width_control->set_value (0);
+ position_control->set_value (1.0);
+ }
+ }
} else {
- cerr << "Reset width\n";
- width_control->set_value (1.0); // reset position to full, LR
+ if (dragging_left) {
+ width_control->set_value (1.0); // reset width to 100%
+ } else if (dragging_right) {
+ width_control->set_value (-1.0); // reset width to inverted 100%
+ } else {
+ width_control->set_value (0); // collapse width to 0%
+ }
+
}
+
dragging = false;
+
} else {
dragging = true;
}
{
dragging = false;
dragging_position = false;
+ dragging_left = false;
+ dragging_right = false;
+ accumulated_delta = 0;
+
+ if (drag_data_window) {
+ drag_data_window->hide ();
+ }
+
+ set_tooltip ();
+
+ return true;
+}
+
+bool
+StereoPanner::on_scroll_event (GdkEventScroll* ev)
+{
+ 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;
+
+ if (Keyboard::modifier_state_contains (ev->state, Keyboard::PrimaryModifier)) {
+ step = one_degree;
+ } else {
+ step = one_degree * 5.0;
+ }
+
+ switch (ev->direction) {
+ case GDK_SCROLL_LEFT:
+ wv += step;
+ width_control->set_value (wv);
+ break;
+ case GDK_SCROLL_UP:
+ pv -= step;
+ position_control->set_value (pv);
+ break;
+ case GDK_SCROLL_RIGHT:
+ wv -= step;
+ width_control->set_value (wv);
+ break;
+ case GDK_SCROLL_DOWN:
+ pv += step;
+ position_control->set_value (pv);
+ break;
+ }
+
return true;
}
return false;
}
- int w = get_width();
- float delta = (abs (ev->x - last_drag_x)) / (double) (w/2);
+ 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);
+
+ drag_data_label = manage (new Label);
+ drag_data_label->set_use_markup (true);
- if (!dragging_position) {
- double wv = width_control->get_value();
+ drag_data_window->set_border_width (6);
+ drag_data_window->add (*drag_data_label);
+ drag_data_label->show ();
- if (((drag_start_x < w/2) && ev->x > last_drag_x) || // start left of center, move towards it
- ((drag_start_x > w/2) && ev->x < last_drag_x)) { // start right of center, move towards it
- wv = wv * (1.0 - delta);
+ Window* toplevel = dynamic_cast<Window*> (get_toplevel());
+ if (toplevel) {
+ drag_data_window->set_transient_for (*toplevel);
+ }
+ }
+
+ 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 ();
+ unset_tooltip ();
+ }
+
+ int w = get_width();
+ double delta = (ev->x - last_drag_x) / (double) w;
+
+ if (dragging_left) {
+ delta = -delta;
+ }
+
+ if (dragging_left || dragging_right) {
+
+ /* maintain position as invariant as we change the width */
+
+ double current_width = width_control->get_value ();
+
+ /* create a detent close to the center */
+
+ if (fabs (current_width) < 0.1) {
+ accumulated_delta += delta;
+ /* in the detent - have we pulled far enough to escape ? */
+ if (fabs (accumulated_delta) >= 0.1) {
+ width_control->set_value (current_width + accumulated_delta);
+ accumulated_delta = 0;
+ } else {
+ /* snap to zero */
+ width_control->set_value (0);
+ }
} else {
- /* moving out, so increase the width */
- wv = wv * (1.0 + delta);
+ width_control->set_value (current_width + delta);
}
-
- width_control->set_value (wv);
- } else {
+ } else if (dragging_position) {
double pv = position_control->get_value(); // 0..1.0 ; 0 = left
-
- if (ev->x > last_drag_x) { // increasing
- pv = pv * (1.0 + delta);
+ position_control->set_value (pv + delta);
+ }
+
+ last_drag_x = ev->x;
+ return true;
+}
+
+bool
+StereoPanner::on_key_press_event (GdkEventKey* ev)
+{
+ double one_degree = 1.0/180.0;
+ double pv = position_control->get_value(); // 0..1.0 ; 0 = left
+ double wv = width_control->get_value(); // 0..1.0 ; 0 = left
+ double step;
+
+ if (Keyboard::modifier_state_contains (ev->state, Keyboard::PrimaryModifier)) {
+ step = one_degree;
+ } else {
+ 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:
+ if (Keyboard::modifier_state_equals (ev->state, Keyboard::SecondaryModifier)) {
+ width_control->set_value (1.0);
} else {
- pv = pv * (1.0 - delta);
+ 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);
- }
+ break;
+ case GDK_Right:
+ pv += step;
+ position_control->set_value (pv);
+ break;
- last_drag_x = ev->x;
+ break;
+ case GDK_0:
+ case GDK_KP_0:
+ width_control->set_value (0.0);
+ break;
+
+ default:
+ return false;
+ }
+
return true;
}
+
+bool
+StereoPanner::on_key_release_event (GdkEventKey* ev)
+{
+ return false;
+}
+
+bool
+StereoPanner::on_enter_notify_event (GdkEventCrossing* ev)
+{
+ grab_focus ();
+ Keyboard::magic_widget_grab_focus ();
+ return false;
+}
+
+bool
+StereoPanner::on_leave_notify_event (GdkEventCrossing*)
+{
+ 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[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[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();
+
+ color_change (); /* EMIT SIGNAL */
+}
projects / ardour.git / blobdiff