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Diffstat (limited to 'gtk2_ardour/ardour_knob.cc')
| -rw-r--r-- | gtk2_ardour/ardour_knob.cc | 599 |
1 files changed, 0 insertions, 599 deletions
diff --git a/gtk2_ardour/ardour_knob.cc b/gtk2_ardour/ardour_knob.cc deleted file mode 100644 index 25d9c44630..0000000000 --- a/gtk2_ardour/ardour_knob.cc +++ /dev/null @@ -1,599 +0,0 @@ -/* - Copyright (C) 2010 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 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 <cmath> -#include <algorithm> - -#include <pangomm/layout.h> - -#include "pbd/compose.h" -#include "pbd/controllable.h" -#include "pbd/error.h" -#include "pbd/stacktrace.h" - -#include "gtkmm2ext/utils.h" -#include "gtkmm2ext/rgb_macros.h" -#include "gtkmm2ext/gui_thread.h" -#include "gtkmm2ext/keyboard.h" - -#include "ardour/automation_control.h" -#include "ardour/rc_configuration.h" // for widget prelight preference - -#include "ardour_knob.h" -#include "timers.h" -#include "ui_config.h" - -#include "canvas/colors.h" -#include "canvas/utils.h" - -#include "pbd/i18n.h" - -using namespace Gtkmm2ext; -using namespace Gtk; -using namespace Glib; -using namespace PBD; -using std::max; -using std::min; -using namespace std; - -ArdourKnob::Element ArdourKnob::default_elements = ArdourKnob::Element (ArdourKnob::Arc); - -ArdourKnob::ArdourKnob (Element e, Flags flags) - : _elements (e) - , _hovering (false) - , _grabbed_x (0) - , _grabbed_y (0) - , _val (0) - , _normal (0) - , _dead_zone_delta (0) - , _flags (flags) - , _tooltip (this) -{ - UIConfiguration::instance().ColorsChanged.connect (sigc::mem_fun (*this, &ArdourKnob::color_handler)); - - // watch automation :( - // TODO only use for GainAutomation - Timers::rapid_connect (sigc::bind (sigc::mem_fun (*this, &ArdourKnob::controllable_changed), false)); -} - -ArdourKnob::~ArdourKnob() -{ -} - -void -ArdourKnob::render (Cairo::RefPtr<Cairo::Context> const& ctx, cairo_rectangle_t*) -{ - cairo_t* cr = ctx->cobj(); - cairo_pattern_t* shade_pattern; - - float width = get_width(); - float height = get_height(); - - const float scale = min(width, height); - const float pointer_thickness = 3.0 * (scale/80); //(if the knob is 80 pixels wide, we want a 3-pix line on it) - - const float start_angle = ((180 - 65) * G_PI) / 180; - const float end_angle = ((360 + 65) * G_PI) / 180; - - float zero = 0; - if (_flags & ArcToZero) { - zero = _normal; - } - - const float value_angle = start_angle + (_val * (end_angle - start_angle)); - const float zero_angle = start_angle + (zero * (end_angle - start_angle)); - - float value_x = cos (value_angle); - float value_y = sin (value_angle); - - float xc = 0.5 + width/ 2.0; - float yc = 0.5 + height/ 2.0; - - cairo_translate (cr, xc, yc); //after this, everything is based on the center of the knob - - //get the knob color from the theme - ArdourCanvas::Color knob_color = UIConfiguration::instance().color (string_compose ("%1", get_name())); - - float center_radius = 0.48*scale; - float border_width = 0.8; - - bool arc = (_elements & Arc)==Arc; - bool bevel = (_elements & Bevel)==Bevel; - bool flat = _flat_buttons; - - if ( arc ) { - center_radius = scale*0.33; - - float inner_progress_radius = scale*0.38; - float outer_progress_radius = scale*0.48; - float progress_width = (outer_progress_radius-inner_progress_radius); - float progress_radius = inner_progress_radius + progress_width/2.0; - - //dark arc background - cairo_set_source_rgb (cr, 0.3, 0.3, 0.3 ); - cairo_set_line_width (cr, progress_width); - cairo_arc (cr, 0, 0, progress_radius, start_angle, end_angle); - cairo_stroke (cr); - - //look up the arc colors from the config - double red_start, green_start, blue_start, unused; - ArdourCanvas::Color arc_start_color = UIConfiguration::instance().color ( string_compose ("%1: arc start", get_name())); - ArdourCanvas::color_to_rgba( arc_start_color, red_start, green_start, blue_start, unused ); - double red_end, green_end, blue_end; - ArdourCanvas::Color arc_end_color = UIConfiguration::instance().color ( string_compose ("%1: arc end", get_name()) ); - ArdourCanvas::color_to_rgba( arc_end_color, red_end, green_end, blue_end, unused ); - - //vary the arc color over the travel of the knob - float intensity = fabsf (_val - zero) / std::max(zero, (1.f - zero)); - const float intensity_inv = 1.0 - intensity; - float r = intensity_inv * red_end + intensity * red_start; - float g = intensity_inv * green_end + intensity * green_start; - float b = intensity_inv * blue_end + intensity * blue_start; - - //draw the arc - cairo_set_source_rgb (cr, r,g,b); - cairo_set_line_width (cr, progress_width); - if (zero_angle > value_angle) { - cairo_arc (cr, 0, 0, progress_radius, value_angle, zero_angle); - } else { - cairo_arc (cr, 0, 0, progress_radius, zero_angle, value_angle); - } - cairo_stroke (cr); - - //shade the arc - if (!flat) { - shade_pattern = cairo_pattern_create_linear (0.0, -yc, 0.0, yc); //note we have to offset the pattern from our centerpoint - cairo_pattern_add_color_stop_rgba (shade_pattern, 0.0, 1,1,1, 0.15); - cairo_pattern_add_color_stop_rgba (shade_pattern, 0.5, 1,1,1, 0.0); - cairo_pattern_add_color_stop_rgba (shade_pattern, 1.0, 1,1,1, 0.0); - cairo_set_source (cr, shade_pattern); - cairo_arc (cr, 0, 0, outer_progress_radius-1, 0, 2.0*G_PI); - cairo_fill (cr); - cairo_pattern_destroy (shade_pattern); - } - -#if 0 //black border - const float start_angle_x = cos (start_angle); - const float start_angle_y = sin (start_angle); - const float end_angle_x = cos (end_angle); - const float end_angle_y = sin (end_angle); - - cairo_set_source_rgb (cr, 0, 0, 0 ); - cairo_set_line_width (cr, border_width); - cairo_move_to (cr, (outer_progress_radius * start_angle_x), (outer_progress_radius * start_angle_y)); - cairo_line_to (cr, (inner_progress_radius * start_angle_x), (inner_progress_radius * start_angle_y)); - cairo_stroke (cr); - cairo_move_to (cr, (outer_progress_radius * end_angle_x), (outer_progress_radius * end_angle_y)); - cairo_line_to (cr, (inner_progress_radius * end_angle_x), (inner_progress_radius * end_angle_y)); - cairo_stroke (cr); - cairo_arc (cr, 0, 0, outer_progress_radius, start_angle, end_angle); - cairo_stroke (cr); -#endif - } - - if (!flat) { - //knob shadow - cairo_save(cr); - cairo_translate(cr, pointer_thickness+1, pointer_thickness+1 ); - cairo_set_source_rgba (cr, 0, 0, 0, 0.1 ); - cairo_arc (cr, 0, 0, center_radius-1, 0, 2.0*G_PI); - cairo_fill (cr); - cairo_restore(cr); - - //inner circle - ArdourCanvas::set_source_rgba(cr, knob_color); - cairo_arc (cr, 0, 0, center_radius, 0, 2.0*G_PI); - cairo_fill (cr); - - //gradient - if (bevel) { - //knob gradient - shade_pattern = cairo_pattern_create_linear (0.0, -yc, 0.0, yc); //note we have to offset the gradient from our centerpoint - cairo_pattern_add_color_stop_rgba (shade_pattern, 0.0, 1,1,1, 0.2); - cairo_pattern_add_color_stop_rgba (shade_pattern, 0.2, 1,1,1, 0.2); - cairo_pattern_add_color_stop_rgba (shade_pattern, 0.8, 0,0,0, 0.2); - cairo_pattern_add_color_stop_rgba (shade_pattern, 1.0, 0,0,0, 0.2); - cairo_set_source (cr, shade_pattern); - cairo_arc (cr, 0, 0, center_radius, 0, 2.0*G_PI); - cairo_fill (cr); - cairo_pattern_destroy (shade_pattern); - - //flat top over beveled edge - ArdourCanvas::set_source_rgb_a (cr, knob_color, 0.5 ); - cairo_arc (cr, 0, 0, center_radius-pointer_thickness, 0, 2.0*G_PI); - cairo_fill (cr); - } else { - //radial gradient - shade_pattern = cairo_pattern_create_radial ( -center_radius, -center_radius, 1, -center_radius, -center_radius, center_radius*2.5 ); //note we have to offset the gradient from our centerpoint - cairo_pattern_add_color_stop_rgba (shade_pattern, 0.0, 1,1,1, 0.2); - cairo_pattern_add_color_stop_rgba (shade_pattern, 1.0, 0,0,0, 0.3); - cairo_set_source (cr, shade_pattern); - cairo_arc (cr, 0, 0, center_radius, 0, 2.0*G_PI); - cairo_fill (cr); - cairo_pattern_destroy (shade_pattern); - } - - } else { - //inner circle - ArdourCanvas::set_source_rgba(cr, knob_color); - cairo_arc (cr, 0, 0, center_radius, 0, 2.0*G_PI); - cairo_fill (cr); - } - - - //black knob border - cairo_set_line_width (cr, border_width); - cairo_set_source_rgba (cr, 0,0,0, 1 ); - cairo_arc (cr, 0, 0, center_radius, 0, 2.0*G_PI); - cairo_stroke (cr); - - //line shadow - if (!flat) { - cairo_save(cr); - cairo_translate(cr, 1, 1 ); - cairo_set_source_rgba (cr, 0,0,0,0.3 ); - cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND); - cairo_set_line_width (cr, pointer_thickness); - cairo_move_to (cr, (center_radius * value_x), (center_radius * value_y)); - cairo_line_to (cr, ((center_radius*0.4) * value_x), ((center_radius*0.4) * value_y)); - cairo_stroke (cr); - cairo_restore(cr); - } - - //line - cairo_set_source_rgba (cr, 1,1,1, 1 ); - cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND); - cairo_set_line_width (cr, pointer_thickness); - cairo_move_to (cr, (center_radius * value_x), (center_radius * value_y)); - cairo_line_to (cr, ((center_radius*0.4) * value_x), ((center_radius*0.4) * value_y)); - cairo_stroke (cr); - - //highlight if grabbed or if mouse is hovering over me - if (_tooltip.dragging() || (_hovering && UIConfiguration::instance().get_widget_prelight() ) ) { - cairo_set_source_rgba (cr, 1,1,1, 0.12 ); - cairo_arc (cr, 0, 0, center_radius, 0, 2.0*G_PI); - cairo_fill (cr); - } - - cairo_identity_matrix(cr); -} - -void -ArdourKnob::on_size_request (Gtk::Requisition* req) -{ - // see ardour-button VectorIcon size, use font scaling as default - CairoWidget::on_size_request (req); // allow to override - - // we're square - if (req->width < req->height) { - req->width = req->height; - } - if (req->height < req->width) { - req->height = req->width; - } -} - -bool -ArdourKnob::on_scroll_event (GdkEventScroll* ev) -{ - /* mouse wheel */ - - float scale = 0.05; //by default, we step in 1/20ths of the knob travel - if (ev->state & Keyboard::GainFineScaleModifier) { - if (ev->state & Keyboard::GainExtraFineScaleModifier) { - scale *= 0.01; - } else { - scale *= 0.10; - } - } - - boost::shared_ptr<PBD::Controllable> c = binding_proxy.get_controllable(); - if (c) { - float val = c->get_interface(); - - if ( ev->direction == GDK_SCROLL_UP ) - val += scale; - else - val -= scale; - - c->set_interface(val); - } - - return true; -} - -bool -ArdourKnob::on_motion_notify_event (GdkEventMotion *ev) -{ - if (!(ev->state & Gdk::BUTTON1_MASK)) { - return true; - } - - boost::shared_ptr<PBD::Controllable> c = binding_proxy.get_controllable(); - if (!c) { - return true; - } - - - //scale the adjustment based on keyboard modifiers & GUI size - const float ui_scale = max (1.f, UIConfiguration::instance().get_ui_scale()); - float scale = 0.0025 / ui_scale; - - if (ev->state & Keyboard::GainFineScaleModifier) { - if (ev->state & Keyboard::GainExtraFineScaleModifier) { - scale *= 0.01; - } else { - scale *= 0.10; - } - } - - //calculate the travel of the mouse - int delta = (_grabbed_y - ev->y) - (_grabbed_x - ev->x); - if (delta == 0) { - return true; - } - - _grabbed_x = ev->x; - _grabbed_y = ev->y; - float val = c->get_interface(); - - if (_flags & Detent) { - const float px_deadzone = 42.f * ui_scale; - - if ((val - _normal) * (val - _normal + delta * scale) < 0) { - /* detent */ - const int tozero = (_normal - val) * scale; - int remain = delta - tozero; - if (abs (remain) > px_deadzone) { - /* slow down passing the default value */ - remain += (remain > 0) ? px_deadzone * -.5 : px_deadzone * .5; - delta = tozero + remain; - _dead_zone_delta = 0; - } else { - c->set_value (c->normal(), Controllable::NoGroup); - _dead_zone_delta = remain / px_deadzone; - return true; - } - } - - if (fabsf (rintf((val - _normal) / scale) + _dead_zone_delta) < 1) { - c->set_value (c->normal(), Controllable::NoGroup); - _dead_zone_delta += delta / px_deadzone; - return true; - } - - _dead_zone_delta = 0; - } - - val += delta * scale; - c->set_interface(val); - - return true; -} - -bool -ArdourKnob::on_button_press_event (GdkEventButton *ev) -{ - _grabbed_x = ev->x; - _grabbed_y = ev->y; - _dead_zone_delta = 0; - - if (ev->type != GDK_BUTTON_PRESS) { - if (_grabbed) { - remove_modal_grab(); - gdk_pointer_ungrab (GDK_CURRENT_TIME); - } - return true; - } - - if (binding_proxy.button_press_handler (ev)) { - return true; - } - - if (ev->button != 1 && ev->button != 2) { - return false; - } - - set_active_state (Gtkmm2ext::ExplicitActive); - _tooltip.start_drag(); - add_modal_grab(); - _grabbed = true; - gdk_pointer_grab(ev->window,false, - GdkEventMask( Gdk::POINTER_MOTION_MASK | Gdk::BUTTON_PRESS_MASK |Gdk::BUTTON_RELEASE_MASK), - NULL,NULL,ev->time); - return true; -} - -bool -ArdourKnob::on_button_release_event (GdkEventButton *ev) -{ - _tooltip.stop_drag(); - _grabbed = false; - remove_modal_grab(); - gdk_pointer_ungrab (GDK_CURRENT_TIME); - - if ( (_grabbed_y == ev->y && _grabbed_x == ev->x) && Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) { //no move, shift-click sets to default - boost::shared_ptr<PBD::Controllable> c = binding_proxy.get_controllable(); - if (!c) return false; - c->set_value (c->normal(), Controllable::NoGroup); - return true; - } - - unset_active_state (); - - return true; -} - -void -ArdourKnob::color_handler () -{ - set_dirty (); -} - -void -ArdourKnob::on_size_allocate (Allocation& alloc) -{ - CairoWidget::on_size_allocate (alloc); -} - -void -ArdourKnob::set_controllable (boost::shared_ptr<Controllable> c) -{ - watch_connection.disconnect (); //stop watching the old controllable - - if (!c) return; - - binding_proxy.set_controllable (c); - - c->Changed.connect (watch_connection, invalidator(*this), boost::bind (&ArdourKnob::controllable_changed, this, false), gui_context()); - - _normal = c->internal_to_interface(c->normal()); - - controllable_changed(); -} - -void -ArdourKnob::controllable_changed (bool force_update) -{ - boost::shared_ptr<PBD::Controllable> c = binding_proxy.get_controllable(); - if (!c) return; - - float val = c->get_interface(); - val = min( max(0.0f, val), 1.0f); // clamp - - if (val == _val && !force_update) { - return; - } - - _val = val; - if (!_tooltip_prefix.empty()) { - boost::shared_ptr<ARDOUR::AutomationControl> ac = boost::dynamic_pointer_cast<ARDOUR::AutomationControl> (c); - _tooltip.set_tip (_tooltip_prefix + c->get_user_string()); - } - set_dirty(); -} - -void -ArdourKnob::on_style_changed (const RefPtr<Gtk::Style>&) -{ - set_dirty (); -} - -void -ArdourKnob::on_name_changed () -{ - set_dirty (); -} - - -void -ArdourKnob::set_active_state (Gtkmm2ext::ActiveState s) -{ - if (_active_state != s) - CairoWidget::set_active_state (s); -} - -void -ArdourKnob::set_visual_state (Gtkmm2ext::VisualState s) -{ - if (_visual_state != s) - CairoWidget::set_visual_state (s); -} - - -bool -ArdourKnob::on_focus_in_event (GdkEventFocus* ev) -{ - set_dirty (); - return CairoWidget::on_focus_in_event (ev); -} - -bool -ArdourKnob::on_focus_out_event (GdkEventFocus* ev) -{ - set_dirty (); - return CairoWidget::on_focus_out_event (ev); -} - -bool -ArdourKnob::on_enter_notify_event (GdkEventCrossing* ev) -{ - _hovering = true; - - set_dirty (); - - boost::shared_ptr<PBD::Controllable> c (binding_proxy.get_controllable ()); - if (c) { - PBD::Controllable::GUIFocusChanged (boost::weak_ptr<PBD::Controllable> (c)); - } - - return CairoWidget::on_enter_notify_event (ev); -} - -bool -ArdourKnob::on_leave_notify_event (GdkEventCrossing* ev) -{ - _hovering = false; - - set_dirty (); - - if (binding_proxy.get_controllable()) { - PBD::Controllable::GUIFocusChanged (boost::weak_ptr<PBD::Controllable> ()); - } - - return CairoWidget::on_leave_notify_event (ev); -} - -void -ArdourKnob::set_elements (Element e) -{ - _elements = e; -} - -void -ArdourKnob::add_elements (Element e) -{ - _elements = (ArdourKnob::Element) (_elements | e); -} - - -KnobPersistentTooltip::KnobPersistentTooltip (Gtk::Widget* w) - : PersistentTooltip (w, true, 3) - , _dragging (false) -{ -} - -void -KnobPersistentTooltip::start_drag () -{ - _dragging = true; -} - -void -KnobPersistentTooltip::stop_drag () -{ - _dragging = false; -} - -bool -KnobPersistentTooltip::dragging () const -{ - return _dragging; -} |