/*
- Copyright (C) 2000-2007 Paul Davis
+ Copyright (C) 2000-2007 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 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.
+ 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 <iostream>
#include <iomanip>
#include <cstring>
+#include <cmath>
+
+#include <gtkmm/window.h>
+#include <pangomm/layout.h>
#include "pbd/controllable.h"
#include "pbd/compose.h"
#include "gtkmm2ext/gui_thread.h"
#include "gtkmm2ext/gtk_ui.h"
+#include "gtkmm2ext/keyboard.h"
+#include "gtkmm2ext/utils.h"
+#include "gtkmm2ext/persistent_tooltip.h"
+#include "ardour/pannable.h"
#include "ardour/panner.h"
+#include "ardour/panner_shell.h"
+
+#include "ardour_ui.h"
+#include "global_signals.h"
#include "stereo_panner.h"
+#include "stereo_panner_editor.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 = 18;
+static const int pos_box_size = 8;
+static const int lr_box_size = 15;
static const int step_down = 10;
-
-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)
- , drag_start_x (0)
- , last_drag_x (0)
+static const int top_step = 2;
+
+StereoPanner::ColorScheme StereoPanner::colors[3];
+bool StereoPanner::have_colors = false;
+
+Pango::AttrList StereoPanner::panner_font_attributes;
+bool StereoPanner::have_font = false;
+
+using namespace ARDOUR;
+
+StereoPanner::StereoPanner (boost::shared_ptr<PannerShell> p)
+ : PannerInterface (p->panner())
+ , _panner_shell (p)
+ , position_control (_panner->pannable()->pan_azimuth_control)
+ , width_control (_panner->pannable()->pan_width_control)
+ , dragging_position (false)
+ , dragging_left (false)
+ , dragging_right (false)
+ , drag_start_x (0)
+ , last_drag_x (0)
+ , accumulated_delta (0)
+ , detented (false)
+ , position_binder (position_control)
+ , width_binder (width_control)
+ , _dragging (false)
{
- 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 ();
-
- add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK|Gdk::SCROLL_MASK|Gdk::POINTER_MOTION_MASK);
+ if (!have_colors) {
+ set_colors ();
+ have_colors = true;
+ }
+ if (!have_font) {
+ Pango::FontDescription font;
+ Pango::AttrFontDesc* font_attr;
+ font = Pango::FontDescription ("ArdourMono");
+ font.set_weight (Pango::WEIGHT_BOLD);
+ font.set_size(9 * PANGO_SCALE);
+ font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
+ panner_font_attributes.change(*font_attr);
+ delete font_attr;
+ have_font = 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());
+ _panner_shell->Changed.connect (connections, invalidator (*this), boost::bind (&StereoPanner::bypass_handler, this), gui_context());
+
+ ColorsChanged.connect (sigc::mem_fun (*this, &StereoPanner::color_handler));
+
+ set_tooltip ();
}
StereoPanner::~StereoPanner ()
{
-}
-void
-StereoPanner::set_tooltip ()
-{
- Gtkmm2ext::UI::instance()->set_tip (this, string_compose (_("L:%1 R:%2 Width: %3%%"),
- (int) floor (position_control->get_value() * 100.0),
- (int) floor ((1.0 - position_control->get_value() * 100)),
- (int) floor (width_control->get_value() * 100.0)).c_str());
}
void
-StereoPanner::value_change ()
+StereoPanner::set_tooltip ()
{
- set_tooltip ();
- queue_draw ();
+ if (_panner_shell->bypassed()) {
+ _tooltip.set_tip (_("bypassed"));
+ 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.
+ */
+
+ char buf[64];
+ snprintf (buf, sizeof (buf), _("L:%3d R:%3d Width:%d%%"), (int) rint (100.0 * (1.0 - pos)),
+ (int) rint (100.0 * pos),
+ (int) floor (100.0 * width_control->get_value()));
+ _tooltip.set_tip (buf);
}
bool
-StereoPanner::on_expose_event (GdkEventExpose* ev)
+StereoPanner::on_expose_event (GdkEventExpose*)
{
Glib::RefPtr<Gdk::Window> win (get_window());
Glib::RefPtr<Gdk::GC> gc (get_style()->get_base_gc (get_state()));
+ Cairo::RefPtr<Cairo::Context> context = get_window()->create_cairo_context();
+ Glib::RefPtr<Pango::Layout> layout = Pango::Layout::create(get_pango_context());
+ layout->set_attributes (panner_font_attributes);
+
+ int tw, th;
+ int width, height;
+ const double pos = position_control->get_value (); /* 0..1 */
+ const double swidth = width_control->get_value (); /* -1..+1 */
+ const double fswidth = fabs (swidth);
+ const double corner_radius = 5.0;
+ uint32_t o, f, t, b, r;
+ 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;
+ r = colors[state].rule;
+
+ if (_panner_shell->bypassed()) {
+ b = 0x20202040;
+ f = 0x404040ff;
+ o = 0x606060ff;
+ t = 0x606060ff;
+ r = 0x606060ff;
+ }
+
+ /* background */
+
+ context->set_source_rgba (UINT_RGBA_R_FLT(b), UINT_RGBA_G_FLT(b), UINT_RGBA_B_FLT(b), UINT_RGBA_A_FLT(b));
+ cairo_rectangle (context->cobj(), 0, 0, width, height);
+ context->fill_preserve ();
+ context->clip();
+
+ /* 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;
+ context->translate (1.0, 0.0);
+ }
+
+ const double half_lr_box = lr_box_size/2.0;
+ const double center = rint(half_lr_box + (usable_width * pos));
+ const double pan_spread = rint((fswidth * (usable_width-1.0))/2.0);
+ const double left = center - pan_spread;
+ const double right = center + pan_spread;
+
+ /* center line */
+ context->set_line_width (1.0);
+ context->move_to ((usable_width + lr_box_size)/2.0, 0);
+ context->rel_line_to (0, height);
+ context->set_source_rgba (UINT_RGBA_R_FLT(r), UINT_RGBA_G_FLT(r), UINT_RGBA_B_FLT(r), UINT_RGBA_A_FLT(r));
+ context->stroke ();
+
+ /* compute & draw the line through the box */
+ context->set_line_width (2);
+ context->set_source_rgba (UINT_RGBA_R_FLT(o), UINT_RGBA_G_FLT(o), UINT_RGBA_B_FLT(o), UINT_RGBA_A_FLT(o));
+ context->move_to (left, top_step + (pos_box_size/2.0) + step_down + 1.0);
+ context->line_to (left, top_step + (pos_box_size/2.0));
+ context->line_to (right, top_step + (pos_box_size/2.0));
+ context->line_to (right, top_step + (pos_box_size/2.0) + step_down + 1.0);
+ context->stroke ();
+
+ context->set_line_width (1.0);
+
+ /* left box */
+ if (state != Mono) {
+ rounded_rectangle (context, left - half_lr_box,
+ half_lr_box+step_down,
+ lr_box_size, lr_box_size, corner_radius);
+ context->set_source_rgba (UINT_RGBA_R_FLT(f), UINT_RGBA_G_FLT(f), UINT_RGBA_B_FLT(f), UINT_RGBA_A_FLT(f));
+ context->fill_preserve();
+ context->set_source_rgba (UINT_RGBA_R_FLT(o), UINT_RGBA_G_FLT(o), UINT_RGBA_B_FLT(o), UINT_RGBA_A_FLT(o));
+ context->stroke();
+
+ /* add text */
+ context->set_source_rgba (UINT_RGBA_R_FLT(t), UINT_RGBA_G_FLT(t), UINT_RGBA_B_FLT(t), UINT_RGBA_A_FLT(t));
+ if (swidth < 0.0) {
+ layout->set_text (_("R"));
+ } else {
+ layout->set_text (_("L"));
+ }
+ layout->get_pixel_size(tw, th);
+ context->move_to (rint(left - tw/2), rint(lr_box_size + step_down - th/2));
+ pango_cairo_show_layout (context->cobj(), layout->gobj());
+ }
+
+ /* right box */
+ rounded_rectangle (context, right - half_lr_box,
+ half_lr_box+step_down,
+ lr_box_size, lr_box_size, corner_radius);
+ context->set_source_rgba (UINT_RGBA_R_FLT(f), UINT_RGBA_G_FLT(f), UINT_RGBA_B_FLT(f), UINT_RGBA_A_FLT(f));
+ context->fill_preserve();
+ context->set_source_rgba (UINT_RGBA_R_FLT(o), UINT_RGBA_G_FLT(o), UINT_RGBA_B_FLT(o), UINT_RGBA_A_FLT(o));
+ context->stroke();
+
+ /* add text */
+ context->set_source_rgba (UINT_RGBA_R_FLT(t), UINT_RGBA_G_FLT(t), UINT_RGBA_B_FLT(t), UINT_RGBA_A_FLT(t));
+
+ if (state == Mono) {
+ layout->set_text (_("M"));
+ } else {
+ if (swidth < 0.0) {
+ layout->set_text (_("L"));
+ } else {
+ layout->set_text (_("R"));
+ }
+ }
+ layout->get_pixel_size(tw, th);
+ context->move_to (rint(right - tw/2), rint(lr_box_size + step_down - th/2));
+ pango_cairo_show_layout (context->cobj(), layout->gobj());
+
+ /* draw the central box */
+ context->set_line_width (2.0);
+ context->move_to (center + (pos_box_size/2.0), top_step); /* top right */
+ context->rel_line_to (0.0, pos_box_size); /* lower right */
+ context->rel_line_to (-pos_box_size/2.0, 4.0); /* bottom point */
+ context->rel_line_to (-pos_box_size/2.0, -4.0); /* lower left */
+ context->rel_line_to (0.0, -pos_box_size); /* upper left */
+ context->close_path ();
+
+ context->set_source_rgba (UINT_RGBA_R_FLT(o), UINT_RGBA_G_FLT(o), UINT_RGBA_B_FLT(o), UINT_RGBA_A_FLT(o));
+ context->stroke_preserve ();
+ context->set_source_rgba (UINT_RGBA_R_FLT(f), UINT_RGBA_G_FLT(f), UINT_RGBA_B_FLT(f), UINT_RGBA_A_FLT(f));
+ context->fill ();
- 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 border_width = 1;
- const int border = border_width * 2;
-
-
- width = get_width();
- height = get_height ();
-
- /* background */
-
- cairo_set_source_rgb (cr, 0.184, 0.172, 0.172);
- cairo_rectangle (cr, 0, 0, width, height);
- cairo_fill (cr);
-
- /* leave a border */
-
- width -= border_width;
- height -= border_width;
-
- /* compute where the central box is */
-
- x1 = (int) floor (width * pos); // center of widget
- x2 = x1 - (int) floor ((fabs (swidth) * width)/2.0); // center, then back up half the swidth value
- x1 -= pos_box_size/2; // center, then back up by half width of position 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_move_to (cr, border + x2, 4+(pos_box_size/2)+step_down);
- cairo_line_to (cr, border + x2, 4+(pos_box_size/2));
- cairo_line_to (cr, border + x2 + floor ((fabs (swidth * width))), 4+(pos_box_size/2));
- cairo_line_to (cr, border + x2 + floor ((fabs (swidth * width))), 4+(pos_box_size/2) + step_down);
- cairo_stroke (cr);
-
- /* left box */
-
- cairo_rectangle (cr,
- border+ x2 - lr_box_size/2,
- (lr_box_size/2)+step_down,
- lr_box_size, lr_box_size);
- cairo_set_source_rgba (cr, 0.3137, 0.4431, 0.7843, 1.0);
- cairo_stroke_preserve (cr);
- cairo_set_source_rgba (cr, 0.4509, 0.7686, 0.8627, 0.8);
- cairo_fill (cr);
-
-
- /* add text */
-
- cairo_move_to (cr,
- border + x2 - lr_box_size/2 + 4,
- (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");
-
- /* right box */
-
- cairo_rectangle (cr,
- border + x2 + (int) floor ((fabs (swidth * width))) - lr_box_size/2,
- (lr_box_size/2)+step_down,
- lr_box_size, lr_box_size);
- cairo_set_source_rgba (cr, 0.3137, 0.4431, 0.7843, 1.0);
- cairo_stroke_preserve (cr);
- cairo_set_source_rgba (cr, 0.4509, 0.7686, 0.8627, 0.8);
- cairo_fill (cr);
-
- /* add text */
-
- cairo_move_to (cr,
- border + x2 + (int) floor ((fabs (swidth * width))) - lr_box_size/2 + 4,
- (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");
-
- /* draw the central box */
-
- cairo_set_line_width (cr, 1);
- cairo_rectangle (cr, border + x1, 4, pos_box_size, pos_box_size);
- cairo_set_source_rgba (cr, 0.3137, 0.4431, 0.7843, 1.0);
- cairo_stroke_preserve (cr);
- cairo_set_source_rgba (cr, 0.4509, 0.7686, 0.8627, 0.8);
- cairo_fill (cr);
-
- /* done */
-
- cairo_destroy (cr);
return true;
}
bool
StereoPanner::on_button_press_event (GdkEventButton* ev)
{
- drag_start_x = ev->x;
- last_drag_x = ev->x;
-
- /* center 8 pixels are for position drag */
-
- int w = get_width();
- double pos = position_control->get_value ();
-
- if ((ev->x >= (int) floor ((pos * w)-(pos_box_size/2))) && (ev->x <= (int) floor ((pos * w)+(pos_box_size/2)))) {
- dragging_position = true;
- } else {
- dragging_position = false;
- }
-
- if (ev->type == GDK_2BUTTON_PRESS) {
- if (dragging_position) {
- cerr << "Reset pos\n";
- position_control->set_value (0.5); // reset position to center
- } else {
- cerr << "Reset width\n";
- width_control->set_value (1.0); // reset position to full, LR
- }
- dragging = false;
- } else {
- dragging = true;
- }
-
- return true;
+ if (PannerInterface::on_button_press_event (ev)) {
+ return true;
+ }
+
+ if (_panner_shell->bypassed()) {
+ return true;
+ }
+
+ drag_start_x = ev->x;
+ last_drag_x = ev->x;
+
+ dragging_position = false;
+ dragging_left = false;
+ dragging_right = false;
+ _dragging = false;
+ _tooltip.target_stop_drag ();
+ accumulated_delta = 0;
+ detented = false;
+
+ /* Let the binding proxies get first crack at the press event
+ */
+
+ if (ev->y < 20) {
+ if (position_binder.button_press_handler (ev)) {
+ return true;
+ }
+ } else {
+ if (width_binder.button_press_handler (ev)) {
+ return true;
+ }
+ }
+
+ if (ev->button != 1) {
+ return false;
+ }
+
+ if (ev->type == GDK_2BUTTON_PRESS) {
+ 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 = fabs (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 {
+
+ /* 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;
+ _tooltip.target_stop_drag ();
+
+ } 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;
+ _tooltip.target_start_drag ();
+ }
+
+ return true;
}
bool
StereoPanner::on_button_release_event (GdkEventButton* ev)
{
- dragging = false;
- dragging_position = false;
- return true;
+ if (PannerInterface::on_button_release_event (ev)) {
+ return true;
+ }
+
+ if (ev->button != 1) {
+ return false;
+ }
+
+ if (_panner_shell->bypassed()) {
+ return false;
+ }
+
+ bool const dp = dragging_position;
+
+ _dragging = false;
+ _tooltip.target_stop_drag ();
+ dragging_position = false;
+ dragging_left = false;
+ dragging_right = false;
+ accumulated_delta = 0;
+ detented = false;
+
+ if (Keyboard::modifier_state_contains (ev->state, Keyboard::TertiaryModifier)) {
+ _panner->reset ();
+ } else {
+ if (dp) {
+ StopPositionGesture ();
+ } else {
+ StopWidthGesture ();
+ }
+ }
+
+ 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 (_panner_shell->bypassed()) {
+ return false;
+ }
+
+ 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;
}
bool
StereoPanner::on_motion_notify_event (GdkEventMotion* ev)
{
- if (!dragging) {
- return false;
- }
-
- int w = get_width();
- float delta = (abs (ev->x - last_drag_x)) / (double) (w/2);
-
- if (!dragging_position) {
- double wv = width_control->get_value();
-
- 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);
- } else {
- /* moving out, so increase the width */
- wv = wv * (1.0 + delta);
- }
-
- width_control->set_value (wv);
-
- } else {
-
- double pv = position_control->get_value(); // 0..1.0 ; 0 = left
-
- if (ev->x > last_drag_x) { // increasing
- pv = pv * (1.0 + delta);
- } else {
- pv = pv * (1.0 - delta);
- }
-
- position_control->set_value (pv);
- }
-
- last_drag_x = ev->x;
- return true;
+ if (_panner_shell->bypassed()) {
+ _dragging = false;
+ }
+ if (!_dragging) {
+ return false;
+ }
+
+ int usable_width = get_width() - lr_box_size;
+ double delta = (ev->x - last_drag_x) / (double) usable_width;
+ double current_width = width_control->get_value ();
+
+ if (dragging_left) {
+ delta = -delta;
+ }
+
+ if (dragging_left || dragging_right) {
+
+ if (Keyboard::modifier_state_contains (ev->state, Keyboard::SecondaryModifier)) {
+
+ /* change width and position in a way that keeps the
+ * other side in the same place
+ */
+
+ _panner->freeze ();
+
+ double pv = position_control->get_value();
+
+ if (dragging_left) {
+ position_control->set_value (pv - delta);
+ } else {
+ position_control->set_value (pv + delta);
+ }
+
+ if (delta > 0.0) {
+ /* delta is positive, so we're about to
+ increase the width. But we need to increase it
+ by twice the required value so that the
+ other side remains in place when we set
+ the position as well.
+ */
+ width_control->set_value (current_width + (delta * 2.0));
+ } else {
+ width_control->set_value (current_width + delta);
+ }
+
+ _panner->thaw ();
+
+ } else {
+
+ /* maintain position as invariant as we change the width */
+
+ /* create a detent close to the center */
+
+ if (!detented && fabs (current_width) < 0.02) {
+ detented = true;
+ /* snap to zero */
+ width_control->set_value (0);
+ }
+
+ if (detented) {
+
+ accumulated_delta += 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 {
+ /* width needs to change by 2 * delta because both L & R move */
+ width_control->set_value (current_width + (delta * 2.0));
+ }
+ }
+
+ } 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;
+ 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 (_panner_shell->bypassed()) {
+ return false;
+ }
+
+ 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 {
+ 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);
+ }
+ break;
+
+ case GDK_Left:
+ pv -= step;
+ position_control->set_value (pv);
+ break;
+ case GDK_Right:
+ pv += step;
+ position_control->set_value (pv);
+ break;
+ case GDK_0:
+ case GDK_KP_0:
+ width_control->set_value (0.0);
+ break;
+
+ default:
+ return false;
+ }
+
+ return true;
+}
+
+void
+StereoPanner::set_colors ()
+{
+ colors[Normal].fill = ARDOUR_UI::config()->get_canvasvar_StereoPannerFill();
+ colors[Normal].outline = ARDOUR_UI::config()->get_canvasvar_StereoPannerOutline();
+ colors[Normal].text = ARDOUR_UI::config()->get_canvasvar_StereoPannerText();
+ colors[Normal].background = ARDOUR_UI::config()->get_canvasvar_StereoPannerBackground();
+ colors[Normal].rule = ARDOUR_UI::config()->get_canvasvar_StereoPannerRule();
+
+ colors[Mono].fill = ARDOUR_UI::config()->get_canvasvar_StereoPannerMonoFill();
+ colors[Mono].outline = ARDOUR_UI::config()->get_canvasvar_StereoPannerMonoOutline();
+ colors[Mono].text = ARDOUR_UI::config()->get_canvasvar_StereoPannerMonoText();
+ colors[Mono].background = ARDOUR_UI::config()->get_canvasvar_StereoPannerMonoBackground();
+ colors[Mono].rule = ARDOUR_UI::config()->get_canvasvar_StereoPannerRule();
+
+ colors[Inverted].fill = ARDOUR_UI::config()->get_canvasvar_StereoPannerInvertedFill();
+ colors[Inverted].outline = ARDOUR_UI::config()->get_canvasvar_StereoPannerInvertedOutline();
+ colors[Inverted].text = ARDOUR_UI::config()->get_canvasvar_StereoPannerInvertedText();
+ colors[Inverted].background = ARDOUR_UI::config()->get_canvasvar_StereoPannerInvertedBackground();
+ colors[Inverted].rule = ARDOUR_UI::config()->get_canvasvar_StereoPannerRule();
+}
+
+void
+StereoPanner::color_handler ()
+{
+ set_colors ();
+ queue_draw ();
+}
+
+void
+StereoPanner::bypass_handler ()
+{
+ queue_draw ();
+}
+
+PannerEditor*
+StereoPanner::editor ()
+{
+ return new StereoPannerEditor (this);
}