725 lines
20 KiB
C++
725 lines
20 KiB
C++
/*
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Copyright (C) 2000-2007 Paul Davis
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <iostream>
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#include <iomanip>
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#include <cstring>
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#include <cmath>
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#include <gtkmm/window.h>
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#include <pangomm/layout.h>
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#include "pbd/controllable.h"
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#include "pbd/compose.h"
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#include "gtkmm2ext/gui_thread.h"
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#include "gtkmm2ext/gtk_ui.h"
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#include "gtkmm2ext/keyboard.h"
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#include "gtkmm2ext/utils.h"
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#include "gtkmm2ext/persistent_tooltip.h"
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#include "ardour/pannable.h"
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#include "ardour/panner.h"
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#include "ardour/panner_shell.h"
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#include "canvas/colors.h"
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#include "ardour_ui.h"
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#include "global_signals.h"
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#include "stereo_panner.h"
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#include "stereo_panner_editor.h"
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#include "rgb_macros.h"
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#include "utils.h"
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#include "i18n.h"
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using namespace std;
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using namespace Gtk;
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using namespace Gtkmm2ext;
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using namespace ARDOUR_UI_UTILS;
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static const int pos_box_size = 8;
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static const int lr_box_size = 15;
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static const int step_down = 10;
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static const int top_step = 2;
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StereoPanner::ColorScheme StereoPanner::colors[3];
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bool StereoPanner::have_colors = false;
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Pango::AttrList StereoPanner::panner_font_attributes;
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bool StereoPanner::have_font = false;
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using namespace ARDOUR;
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StereoPanner::StereoPanner (boost::shared_ptr<PannerShell> p)
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: PannerInterface (p->panner())
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, _panner_shell (p)
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, position_control (_panner->pannable()->pan_azimuth_control)
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, width_control (_panner->pannable()->pan_width_control)
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, dragging_position (false)
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, dragging_left (false)
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, dragging_right (false)
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, drag_start_x (0)
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, last_drag_x (0)
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, accumulated_delta (0)
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, detented (false)
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, position_binder (position_control)
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, width_binder (width_control)
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, _dragging (false)
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{
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if (!have_colors) {
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set_colors ();
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have_colors = true;
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}
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if (!have_font) {
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Pango::FontDescription font;
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Pango::AttrFontDesc* font_attr;
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font = Pango::FontDescription (ARDOUR_UI::config()->get_SmallBoldMonospaceFont());
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font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
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panner_font_attributes.change(*font_attr);
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delete font_attr;
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have_font = true;
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}
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position_control->Changed.connect (panvalue_connections, invalidator(*this), boost::bind (&StereoPanner::value_change, this), gui_context());
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width_control->Changed.connect (panvalue_connections, invalidator(*this), boost::bind (&StereoPanner::value_change, this), gui_context());
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_panner_shell->Changed.connect (panshell_connections, invalidator (*this), boost::bind (&StereoPanner::bypass_handler, this), gui_context());
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_panner_shell->PannableChanged.connect (panshell_connections, invalidator (*this), boost::bind (&StereoPanner::pannable_handler, this), gui_context());
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ColorsChanged.connect (sigc::mem_fun (*this, &StereoPanner::color_handler));
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set_tooltip ();
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}
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StereoPanner::~StereoPanner ()
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{
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}
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void
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StereoPanner::set_tooltip ()
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{
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if (_panner_shell->bypassed()) {
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_tooltip.set_tip (_("bypassed"));
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return;
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}
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double pos = position_control->get_value(); // 0..1
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/* We show the position of the center of the image relative to the left & right.
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This is expressed as a pair of percentage values that ranges from (100,0)
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(hard left) through (50,50) (hard center) to (0,100) (hard right).
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This is pretty wierd, but its the way audio engineers expect it. Just remember that
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the center of the USA isn't Kansas, its (50LA, 50NY) and it will all make sense.
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*/
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char buf[64];
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snprintf (buf, sizeof (buf), _("L:%3d R:%3d Width:%d%%"), (int) rint (100.0 * (1.0 - pos)),
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(int) rint (100.0 * pos),
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(int) floor (100.0 * width_control->get_value()));
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_tooltip.set_tip (buf);
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}
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bool
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StereoPanner::on_expose_event (GdkEventExpose*)
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{
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Glib::RefPtr<Gdk::Window> win (get_window());
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Glib::RefPtr<Gdk::GC> gc (get_style()->get_base_gc (get_state()));
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Cairo::RefPtr<Cairo::Context> context = get_window()->create_cairo_context();
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Glib::RefPtr<Pango::Layout> layout = Pango::Layout::create(get_pango_context());
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layout->set_attributes (panner_font_attributes);
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int tw, th;
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int width, height;
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const double pos = position_control->get_value (); /* 0..1 */
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const double swidth = width_control->get_value (); /* -1..+1 */
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const double fswidth = fabs (swidth);
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const double corner_radius = 5.0;
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uint32_t o, f, t, b, r;
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State state;
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width = get_width();
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height = get_height ();
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if (swidth == 0.0) {
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state = Mono;
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} else if (swidth < 0.0) {
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state = Inverted;
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} else {
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state = Normal;
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}
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o = colors[state].outline;
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f = colors[state].fill;
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t = colors[state].text;
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b = colors[state].background;
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r = colors[state].rule;
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if (_panner_shell->bypassed()) {
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b = 0x20202040;
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f = 0x404040ff;
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o = 0x606060ff;
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t = 0x606060ff;
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r = 0x606060ff;
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}
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if (_send_mode) {
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b = ARDOUR_UI::config()->color ("send strip base");
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// b = rgba_from_style("SendStripBase",
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// UINT_RGBA_R(b), UINT_RGBA_G(b), UINT_RGBA_B(b), 255,
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// "fg");
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}
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/* background */
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context->set_source_rgba (UINT_RGBA_R_FLT(b), UINT_RGBA_G_FLT(b), UINT_RGBA_B_FLT(b), UINT_RGBA_A_FLT(b));
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cairo_rectangle (context->cobj(), 0, 0, width, height);
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context->fill_preserve ();
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context->clip();
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/* the usable width is reduced from the real width, because we need space for
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the two halves of LR boxes that will extend past the actual left/right
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positions (indicated by the vertical line segment above them).
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*/
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double usable_width = width - lr_box_size;
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/* compute the centers of the L/R boxes based on the current stereo width */
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if (fmod (usable_width,2.0) == 0) {
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/* even width, but we need odd, so that there is an exact center.
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So, offset cairo by 1, and reduce effective width by 1
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*/
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usable_width -= 1.0;
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context->translate (1.0, 0.0);
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}
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const double half_lr_box = lr_box_size/2.0;
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const double center = rint(half_lr_box + (usable_width * pos));
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const double pan_spread = rint((fswidth * (usable_width-1.0))/2.0);
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const double left = center - pan_spread;
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const double right = center + pan_spread;
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/* center line */
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context->set_line_width (1.0);
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context->move_to ((usable_width + lr_box_size)/2.0, 0);
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context->rel_line_to (0, height);
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context->set_source_rgba (UINT_RGBA_R_FLT(r), UINT_RGBA_G_FLT(r), UINT_RGBA_B_FLT(r), UINT_RGBA_A_FLT(r));
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context->stroke ();
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/* compute & draw the line through the box */
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context->set_line_width (2);
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context->set_source_rgba (UINT_RGBA_R_FLT(o), UINT_RGBA_G_FLT(o), UINT_RGBA_B_FLT(o), UINT_RGBA_A_FLT(o));
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context->move_to (left, top_step + (pos_box_size/2.0) + step_down + 1.0);
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context->line_to (left, top_step + (pos_box_size/2.0));
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context->line_to (right, top_step + (pos_box_size/2.0));
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context->line_to (right, top_step + (pos_box_size/2.0) + step_down + 1.0);
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context->stroke ();
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context->set_line_width (1.0);
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/* left box */
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if (state != Mono) {
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rounded_rectangle (context, left - half_lr_box,
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half_lr_box+step_down,
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lr_box_size, lr_box_size, corner_radius);
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context->set_source_rgba (UINT_RGBA_R_FLT(f), UINT_RGBA_G_FLT(f), UINT_RGBA_B_FLT(f), UINT_RGBA_A_FLT(f));
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context->fill_preserve();
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context->set_source_rgba (UINT_RGBA_R_FLT(o), UINT_RGBA_G_FLT(o), UINT_RGBA_B_FLT(o), UINT_RGBA_A_FLT(o));
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context->stroke();
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/* add text */
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context->set_source_rgba (UINT_RGBA_R_FLT(t), UINT_RGBA_G_FLT(t), UINT_RGBA_B_FLT(t), UINT_RGBA_A_FLT(t));
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if (swidth < 0.0) {
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layout->set_text (_("R"));
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} else {
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layout->set_text (_("L"));
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}
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layout->get_pixel_size(tw, th);
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context->move_to (rint(left - tw/2), rint(lr_box_size + step_down - th/2));
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pango_cairo_show_layout (context->cobj(), layout->gobj());
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}
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/* right box */
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rounded_rectangle (context, right - half_lr_box,
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half_lr_box+step_down,
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lr_box_size, lr_box_size, corner_radius);
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context->set_source_rgba (UINT_RGBA_R_FLT(f), UINT_RGBA_G_FLT(f), UINT_RGBA_B_FLT(f), UINT_RGBA_A_FLT(f));
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context->fill_preserve();
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context->set_source_rgba (UINT_RGBA_R_FLT(o), UINT_RGBA_G_FLT(o), UINT_RGBA_B_FLT(o), UINT_RGBA_A_FLT(o));
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context->stroke();
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/* add text */
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context->set_source_rgba (UINT_RGBA_R_FLT(t), UINT_RGBA_G_FLT(t), UINT_RGBA_B_FLT(t), UINT_RGBA_A_FLT(t));
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if (state == Mono) {
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layout->set_text (_("M"));
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} else {
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if (swidth < 0.0) {
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layout->set_text (_("L"));
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} else {
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layout->set_text (_("R"));
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}
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}
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layout->get_pixel_size(tw, th);
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context->move_to (rint(right - tw/2), rint(lr_box_size + step_down - th/2));
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pango_cairo_show_layout (context->cobj(), layout->gobj());
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/* draw the central box */
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context->set_line_width (2.0);
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context->move_to (center + (pos_box_size/2.0), top_step); /* top right */
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context->rel_line_to (0.0, pos_box_size); /* lower right */
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context->rel_line_to (-pos_box_size/2.0, 4.0); /* bottom point */
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context->rel_line_to (-pos_box_size/2.0, -4.0); /* lower left */
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context->rel_line_to (0.0, -pos_box_size); /* upper left */
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context->close_path ();
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context->set_source_rgba (UINT_RGBA_R_FLT(o), UINT_RGBA_G_FLT(o), UINT_RGBA_B_FLT(o), UINT_RGBA_A_FLT(o));
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context->stroke_preserve ();
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context->set_source_rgba (UINT_RGBA_R_FLT(f), UINT_RGBA_G_FLT(f), UINT_RGBA_B_FLT(f), UINT_RGBA_A_FLT(f));
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context->fill ();
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return true;
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}
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bool
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StereoPanner::on_button_press_event (GdkEventButton* ev)
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{
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if (PannerInterface::on_button_press_event (ev)) {
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return true;
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}
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if (_panner_shell->bypassed()) {
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return true;
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}
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drag_start_x = ev->x;
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last_drag_x = ev->x;
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dragging_position = false;
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dragging_left = false;
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dragging_right = false;
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_dragging = false;
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_tooltip.target_stop_drag ();
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accumulated_delta = 0;
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detented = false;
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/* Let the binding proxies get first crack at the press event
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*/
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if (ev->y < 20) {
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if (position_binder.button_press_handler (ev)) {
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return true;
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}
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} else {
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if (width_binder.button_press_handler (ev)) {
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return true;
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}
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}
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if (ev->button != 1) {
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return false;
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}
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if (ev->type == GDK_2BUTTON_PRESS) {
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int width = get_width();
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if (Keyboard::modifier_state_contains (ev->state, Keyboard::TertiaryModifier)) {
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/* handled by button release */
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return true;
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}
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if (ev->y < 20) {
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/* upper section: adjusts position, constrained by width */
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const double w = fabs (width_control->get_value ());
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const double max_pos = 1.0 - (w/2.0);
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const double min_pos = w/2.0;
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if (ev->x <= width/3) {
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/* left side dbl click */
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if (Keyboard::modifier_state_contains (ev->state, Keyboard::SecondaryModifier)) {
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/* 2ndary-double click on left, collapse to hard left */
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width_control->set_value (0);
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position_control->set_value (0);
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} else {
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position_control->set_value (min_pos);
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}
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} else if (ev->x > 2*width/3) {
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if (Keyboard::modifier_state_contains (ev->state, Keyboard::SecondaryModifier)) {
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/* 2ndary-double click on right, collapse to hard right */
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width_control->set_value (0);
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position_control->set_value (1.0);
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} else {
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position_control->set_value (max_pos);
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}
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} else {
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position_control->set_value (0.5);
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}
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} else {
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/* lower section: adjusts width, constrained by position */
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const double p = position_control->get_value ();
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const double max_width = 2.0 * min ((1.0 - p), p);
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if (ev->x <= width/3) {
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/* left side dbl click */
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width_control->set_value (max_width); // reset width to 100%
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} else if (ev->x > 2*width/3) {
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/* right side dbl click */
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width_control->set_value (-max_width); // reset width to inverted 100%
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} else {
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/* center dbl click */
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width_control->set_value (0); // collapse width to 0%
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}
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}
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_dragging = false;
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_tooltip.target_stop_drag ();
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} else if (ev->type == GDK_BUTTON_PRESS) {
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if (Keyboard::modifier_state_contains (ev->state, Keyboard::TertiaryModifier)) {
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/* handled by button release */
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return true;
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}
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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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StartPositionGesture ();
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} else {
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/* lower section is for dragging width */
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double pos = position_control->get_value (); /* 0..1 */
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double swidth = width_control->get_value (); /* -1..+1 */
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double fswidth = fabs (swidth);
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int usable_width = get_width() - lr_box_size;
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double center = (lr_box_size/2.0) + (usable_width * pos);
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int left = lrint (center - (fswidth * usable_width / 2.0)); // center of leftmost box
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int right = lrint (center + (fswidth * usable_width / 2.0)); // center of rightmost box
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const int half_box = lr_box_size/2;
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if (ev->x >= (left - half_box) && ev->x < (left + half_box)) {
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if (swidth < 0.0) {
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dragging_right = true;
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} else {
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dragging_left = true;
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}
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} else if (ev->x >= (right - half_box) && ev->x < (right + half_box)) {
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if (swidth < 0.0) {
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dragging_left = true;
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} else {
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dragging_right = true;
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}
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}
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StartWidthGesture ();
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}
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_dragging = true;
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_tooltip.target_start_drag ();
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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_button_release_event (GdkEventButton* ev)
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{
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if (PannerInterface::on_button_release_event (ev)) {
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return true;
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}
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if (ev->button != 1) {
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return false;
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}
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if (_panner_shell->bypassed()) {
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return false;
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}
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bool const dp = dragging_position;
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_dragging = false;
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_tooltip.target_stop_drag ();
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dragging_position = false;
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dragging_left = false;
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dragging_right = false;
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accumulated_delta = 0;
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detented = false;
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if (Keyboard::modifier_state_contains (ev->state, Keyboard::TertiaryModifier)) {
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_panner->reset ();
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} else {
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if (dp) {
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StopPositionGesture ();
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} 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 (_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()->color ("stereo panner fill");
|
|
// colors[Normal].outline = ARDOUR_UI::config()->color ("stereo panner outline");
|
|
colors[Normal].outline = ArdourCanvas::HSV (colors[Normal].fill).outline().color ();
|
|
colors[Normal].text = ARDOUR_UI::config()->color ("stereo panner text");
|
|
colors[Normal].background = ARDOUR_UI::config()->color ("stereo panner bg");
|
|
colors[Normal].rule = ARDOUR_UI::config()->color ("stereo panner rule");
|
|
|
|
colors[Mono].fill = ARDOUR_UI::config()->color ("stereo panner mono fill");
|
|
colors[Mono].outline = ARDOUR_UI::config()->color ("stereo panner mono outline");
|
|
colors[Mono].text = ARDOUR_UI::config()->color ("stereo panner mono text");
|
|
colors[Mono].background = ARDOUR_UI::config()->color ("stereo panner mono bg");
|
|
colors[Mono].rule = ARDOUR_UI::config()->color ("stereo panner rule");
|
|
|
|
colors[Inverted].fill = ARDOUR_UI::config()->color_mod ("stereo panner inverted fill", "stereo panner inverted");
|
|
colors[Inverted].outline = ARDOUR_UI::config()->color ("stereo panner inverted outline");
|
|
colors[Inverted].text = ARDOUR_UI::config()->color ("stereo panner inverted text");
|
|
colors[Inverted].background = ARDOUR_UI::config()->color ("stereo panner inverted bg");
|
|
colors[Inverted].rule = ARDOUR_UI::config()->color ("stereo panner rule");
|
|
}
|
|
|
|
void
|
|
StereoPanner::color_handler ()
|
|
{
|
|
set_colors ();
|
|
queue_draw ();
|
|
}
|
|
|
|
void
|
|
StereoPanner::bypass_handler ()
|
|
{
|
|
queue_draw ();
|
|
}
|
|
|
|
void
|
|
StereoPanner::pannable_handler ()
|
|
{
|
|
panvalue_connections.drop_connections();
|
|
position_control = _panner->pannable()->pan_azimuth_control;
|
|
width_control = _panner->pannable()->pan_width_control;
|
|
position_binder.set_controllable(position_control);
|
|
width_binder.set_controllable(width_control);
|
|
|
|
position_control->Changed.connect (panvalue_connections, invalidator(*this), boost::bind (&StereoPanner::value_change, this), gui_context());
|
|
width_control->Changed.connect (panvalue_connections, invalidator(*this), boost::bind (&StereoPanner::value_change, this), gui_context());
|
|
queue_draw ();
|
|
}
|
|
|
|
PannerEditor*
|
|
StereoPanner::editor ()
|
|
{
|
|
return new StereoPannerEditor (this);
|
|
}
|