2 Copyright (C) 2010-2011 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18 $Id: motionfeedback.cc,v 1.5 2004/03/01 03:44:19 pauld Exp $
26 #include <stdio.h> /* for snprintf, grrr */
28 #include <gdk/gdkkeysyms.h>
31 #include "pbd/controllable.h"
33 #include "gtkmm2ext/motionfeedback.h"
34 #include "gtkmm2ext/keyboard.h"
35 #include "gtkmm2ext/prolooks-helpers.h"
36 #include "gtkmm2ext/gui_thread.h"
39 using namespace Gtkmm2ext;
42 Gdk::Color* MotionFeedback::base_color;
44 MotionFeedback::MotionFeedback (Glib::RefPtr<Gdk::Pixbuf> pix,
46 boost::shared_ptr<PBD::Controllable> c,
48 double step_increment,
49 double page_increment,
50 const char *widget_name,
51 bool with_numeric_display,
56 , default_value (default_val)
57 , step_inc (step_increment)
58 , page_inc (page_increment)
66 base_color = new Gdk::Color ("#1a5274");
69 char value_name[1024];
71 print_func = default_printer;
75 HBox* hpacker = manage (new HBox);
76 hpacker->pack_start (pixwin, true, true);
78 pack_start (*hpacker, false, false);
81 if (with_numeric_display) {
83 value_packer = new EventBox;
84 value_packer->set_name ("MotionControllerValue");
85 value_packer->show ();
86 value_packer->set_border_width (6);
89 value->set_justify (Gtk::JUSTIFY_RIGHT);
92 value_packer->add (*value);
94 hpacker = manage (new HBox);
95 hpacker->pack_start (*value_packer, true, false);
98 pack_start (*hpacker, false, false);
101 snprintf (value_name, sizeof(value_name), "%sValue", widget_name);
102 value->set_name (value_name);
107 print_func (buf, _controllable, print_arg);
108 value->set_text (buf);
112 pixwin.set_events (Gdk::BUTTON_PRESS_MASK|
113 Gdk::BUTTON_RELEASE_MASK|
114 Gdk::POINTER_MOTION_MASK|
115 Gdk::ENTER_NOTIFY_MASK|
116 Gdk::LEAVE_NOTIFY_MASK|
119 Gdk::KEY_RELEASE_MASK);
121 pixwin.set_flags (CAN_FOCUS);
123 /* Proxy all important events on the pixwin to ourselves */
125 pixwin.signal_button_press_event().connect(mem_fun (*this,&MotionFeedback::pixwin_button_press_event));
126 pixwin.signal_button_release_event().connect(mem_fun (*this,&MotionFeedback::pixwin_button_release_event));
127 pixwin.signal_motion_notify_event().connect(mem_fun (*this,&MotionFeedback::pixwin_motion_notify_event));
128 pixwin.signal_enter_notify_event().connect(mem_fun (*this,&MotionFeedback::pixwin_enter_notify_event));
129 pixwin.signal_leave_notify_event().connect(mem_fun (*this,&MotionFeedback::pixwin_leave_notify_event));
130 pixwin.signal_key_press_event().connect(mem_fun (*this,&MotionFeedback::pixwin_key_press_event));
131 pixwin.signal_scroll_event().connect(mem_fun (*this,&MotionFeedback::pixwin_scroll_event));
132 pixwin.signal_expose_event().connect(mem_fun (*this,&MotionFeedback::pixwin_expose_event), true);
133 pixwin.signal_size_request().connect(mem_fun (*this,&MotionFeedback::pixwin_size_request));
136 MotionFeedback::~MotionFeedback()
143 MotionFeedback::pixwin_button_press_event (GdkEventButton *ev)
145 if (binding_proxy.button_press_handler (ev)) {
149 switch (ev->button) {
151 grab_is_fine = false;
160 gtk_grab_add(GTK_WIDGET(pixwin.gobj()));
162 grabbed_y = ev->y_root;
163 grabbed_x = ev->x_root;
169 MotionFeedback::pixwin_button_release_event (GdkEventButton *ev)
171 if (!_controllable) {
175 switch (ev->button) {
177 if (pixwin.has_grab()) {
180 (GTK_WIDGET(pixwin.gobj()));
183 if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
184 /* shift click back to the default */
185 _controllable->set_value (default_value);
191 if (pixwin.has_grab()) {
194 (GTK_WIDGET(pixwin.gobj()));
200 return VBox::on_button_release_event (ev);
204 MotionFeedback::pixwin_motion_notify_event (GdkEventMotion *ev)
206 if (!_controllable) {
214 if (!pixwin.has_grab()) {
215 return VBox::on_motion_notify_event (ev);
218 multiplier = ((ev->state & Keyboard::TertiaryModifier) ? 100 : 1) *
219 ((ev->state & Keyboard::PrimaryModifier) ? 10 : 1) *
220 ((ev->state & Keyboard::SecondaryModifier) ? 0.1 : 1);
222 if (ev->state & Gdk::BUTTON1_MASK) {
224 /* vertical control */
226 y_delta = grabbed_y - ev->y_root;
227 grabbed_y = ev->y_root;
229 x_delta = ev->x_root - grabbed_x;
231 if (y_delta == 0) return TRUE;
233 y_delta *= 1 + (x_delta/100);
234 y_delta *= multiplier;
237 _controllable->set_value (adjust ((grab_is_fine ? step_inc : page_inc) * y_delta));
239 } else if (ev->state & Gdk::BUTTON2_MASK) {
243 double x = ev->x - subwidth/2;
244 double y = - ev->y + subwidth/2;
245 double angle = std::atan2 (y, x) / M_PI;
251 angle = -(2.0/3.0) * (angle - 1.25);
254 _controllable->set_value (to_control_value (angle));
262 MotionFeedback::pixwin_enter_notify_event (GdkEventCrossing*)
269 MotionFeedback::pixwin_leave_notify_event (GdkEventCrossing*)
271 pixwin.unset_flags (HAS_FOCUS);
276 MotionFeedback::pixwin_key_press_event (GdkEventKey *ev)
278 if (!_controllable) {
285 multiplier = ((ev->state & Keyboard::TertiaryModifier) ? 100.0 : 1.0) *
286 ((ev->state & Keyboard::SecondaryModifier) ? 10.0 : 1.0) *
287 ((ev->state & Keyboard::PrimaryModifier) ? 2.0 : 1.0);
289 switch (ev->keyval) {
292 _controllable->set_value (adjust (multiplier * page_inc));
297 _controllable->set_value (adjust (multiplier * page_inc));
302 _controllable->set_value (adjust (multiplier * step_inc));
307 _controllable->set_value (adjust (multiplier * step_inc));
312 _controllable->set_value (_controllable->lower());
317 _controllable->set_value (_controllable->upper());
325 MotionFeedback::pixwin_expose_event (GdkEventExpose*)
327 if (!_controllable) {
331 GdkWindow *window = pixwin.get_window()->gobj();
332 double display_val = to_display_value (_controllable->get_value());
333 int32_t phase = lrint (display_val * 64.0);
335 // skip middle phase except for true middle value
337 if (type == Rotary && phase == 32) {
338 double pt = (display_val * 2.0) - 1.0;
345 // endless knob: skip 90deg highlights unless the value is really a multiple of 90deg
347 if (type == Endless && !(phase % 16)) {
352 double nom = phase / 64.0;
353 double diff = display_val - nom;
356 phase = (phase + 1) % 64;
358 phase = (phase + 63) % 64;
361 phase = std::min (phase, (int32_t) 63);
363 GtkWidget* widget = GTK_WIDGET(pixwin.gobj());
364 gdk_draw_pixbuf (GDK_DRAWABLE(window), widget->style->fg_gc[0],
366 phase * subwidth, type * subheight,
367 /* center image in allocated area */
368 (get_width() - subwidth)/2,
370 subwidth, subheight, GDK_RGB_DITHER_NORMAL, 0, 0);
376 MotionFeedback::pixwin_scroll_event (GdkEventScroll* ev)
380 if (!_controllable) {
384 if (ev->state & Keyboard::GainFineScaleModifier) {
385 if (ev->state & Keyboard::GainExtraFineScaleModifier) {
394 switch (ev->direction) {
396 case GDK_SCROLL_RIGHT:
397 _controllable->set_value (adjust (scale * page_inc));
400 case GDK_SCROLL_DOWN:
401 case GDK_SCROLL_LEFT:
402 _controllable->set_value (adjust (-scale * page_inc));
410 MotionFeedback::pixwin_size_request (GtkRequisition* req)
412 req->width = subwidth;
413 req->height = subheight;
418 MotionFeedback::controllable_value_changed ()
422 print_func (buf, _controllable, print_arg);
423 value->set_text (buf);
426 pixwin.queue_draw ();
430 MotionFeedback::set_controllable (boost::shared_ptr<PBD::Controllable> c)
433 binding_proxy.set_controllable (c);
434 controller_connection.disconnect ();
437 c->Changed.connect (controller_connection, MISSING_INVALIDATOR, boost::bind (&MotionFeedback::controllable_value_changed, this), gui_context());
440 print_func (buf, _controllable, print_arg);
441 value->set_text (buf);
444 pixwin.queue_draw ();
447 boost::shared_ptr<PBD::Controllable>
448 MotionFeedback::controllable () const
450 return _controllable;
454 MotionFeedback::default_printer (char buf[32], const boost::shared_ptr<PBD::Controllable>& c, void *)
457 sprintf (buf, "%.2f", c->get_value());
463 Glib::RefPtr<Gdk::Pixbuf>
464 MotionFeedback::render_pixbuf (int size)
466 Glib::RefPtr<Gdk::Pixbuf> pixbuf;
470 snprintf (path, sizeof (path), "/tmp/mfimg%dXXXXXX", size);
472 if ((fd = mkstemp (path)) < 0) {
476 GdkColor col2 = {0,0,0,0};
477 GdkColor col3 = {0,0,0,0};
482 hsv = prolooks_hsv_new_for_gdk_color (base_color->gobj());
483 bright = (prolooks_hsv_to_gdk_color (hsv, &col2), col2);
484 prolooks_hsv_set_saturation (hsv, 0.66);
485 prolooks_hsv_set_value (hsv, 0.67);
486 dark = (prolooks_hsv_to_gdk_color (hsv, &col3), col3);
488 cairo_surface_t *surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, size * 64, size);
489 cairo_t* cr = cairo_create (surface);
491 for (int i = 0; i < 64; ++i) {
493 core_draw (cr, i, size, 20, size*i, 0, &bright, &dark);
497 if (cairo_surface_write_to_png (surface, path) != CAIRO_STATUS_SUCCESS) {
498 std::cerr << "could not save image set to " << path << std::endl;
505 cairo_surface_destroy (surface);
508 pixbuf = Gdk::Pixbuf::create_from_file (path);
509 } catch (const Gdk::PixbufError &e) {
510 std::cerr << "Caught PixbufError: " << e.what() << std::endl;
515 g_message("Caught ... ");
525 MotionFeedback::core_draw (cairo_t* cr, int phase, double size, double progress_width, double xorigin, double yorigin,
526 const GdkColor* bright, const GdkColor* dark)
536 double start_angle_x;
537 double start_angle_y;
540 double progress_radius;
541 double progress_radius_inner;
542 double progress_radius_outer;
543 double knob_disc_radius;
544 cairo_pattern_t* pattern;
545 double progress_rim_width;
546 cairo_pattern_t* progress_shine;
548 cairo_pattern_t* knob_ripples;
552 g_return_if_fail (cr != NULL);
554 progress_radius = 40.0;
555 progress_radius_inner = progress_radius - (progress_width / 2.0);
556 progress_radius_outer = progress_radius + (progress_width / 2.0);
557 knob_disc_radius = progress_radius_inner - 5.0;
559 const double pad = 2.0; /* line width for boundary of progress ring */
560 const double actual_width = ((2.0 * pad) + (2.0 * progress_radius_outer));
561 const double scale_factor = size / actual_width;
563 /* knob center is at middle of the area bounded by (xorigin,yorigin) and (xorigin+size, yorigin+size)
564 but the coordinates will be scaled by the scale factor when cairo uses them so first
565 adjust them by the reciprocal of the scale factor.
568 xc = (xorigin + (size / 2.0)) * (1.0/scale_factor);
569 yc = (yorigin + (size / 2.0)) * (1.0/scale_factor);
571 pxs = xorigin * (1.0/scale_factor);
572 pys = yorigin * (1.0/scale_factor);
577 value = (phase * 1.0) / (65 - 1);
579 start_angle = ((180 - 65) * G_PI) / 180;
580 end_angle = ((360 + 65) * G_PI) / 180;
582 value_angle = start_angle + (value * (end_angle - start_angle));
583 value_x = cos (value_angle);
584 value_y = sin (value_angle);
585 start_angle_x = cos (start_angle);
586 start_angle_y = sin (start_angle);
587 end_angle_x = cos (end_angle);
588 end_angle_y = sin (end_angle);
590 cairo_scale (cr, scale_factor, scale_factor);
592 pattern = prolooks_create_gradient_str (pxs + 32.0, pys + 16.0, pxs + 75.0, pys + 16.0, "#d4c8b9", "#ae977b", 1.0, 1.0);
593 cairo_set_source (cr, pattern);
594 cairo_pattern_destroy (pattern);
595 cairo_set_line_width (cr, 2.0);
596 cairo_arc (cr, xc, yc, 31.5, 0.0, 2 * G_PI);
599 pattern = prolooks_create_gradient_str (pxs + 20.0, pys + 20.0, pxs + 89.0, pys + 87.0, "#2f2f4c", "#090a0d", 1.0, 1.0);
600 cairo_set_source (cr, pattern);
601 cairo_pattern_destroy (pattern);
602 cairo_set_line_width (cr, progress_width);
603 cairo_arc (cr, xc, yc, progress_radius, start_angle, end_angle);
606 pattern = prolooks_create_gradient (pxs + 20.0, pys + 20.0, pxs + 89.0, pys + 87.0, bright, dark, 1.0, 1.0);
607 cairo_set_source (cr, pattern);
608 cairo_pattern_destroy (pattern);
609 cairo_set_line_width (cr, progress_width);
610 cairo_arc (cr, xc, yc, progress_radius, start_angle, value_angle);
613 cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND);
614 progress_rim_width = 2.0;
615 cairo_set_line_width (cr, progress_rim_width);
616 pattern = prolooks_create_gradient_str (pxs + 18.0, pys + 79.0, pxs + 35.0, pys + 79.0, "#dfd5c9", "#dfd5c9", 1.0, 0.0);
617 cairo_set_source (cr, pattern);
618 cairo_pattern_destroy (pattern);
619 cairo_move_to (cr, xc + (progress_radius_outer * start_angle_x), yc + (progress_radius_outer * start_angle_y));
620 cairo_line_to (cr, xc + (progress_radius_inner * start_angle_x), yc + (progress_radius_inner * start_angle_y));
623 prolooks_set_source_color_string (cr, "#000000", 1.0);
624 cairo_move_to (cr, xc + (progress_radius_outer * end_angle_x), yc + (progress_radius_outer * end_angle_y));
625 cairo_line_to (cr, xc + (progress_radius_inner * end_angle_x), yc + (progress_radius_inner * end_angle_y));
628 // pattern = prolooks_create_gradient_str (95.0, 6.0, 5.0, 44.0, "#dfd5c9", "#b0a090", 1.0, 1.0);
629 pattern = prolooks_create_gradient_str (pxs + 95.0, pys + 6.0, pxs + 5.0, pys + 44.0, "#000000", "#000000", 1.0, 1.0);
630 cairo_set_source (cr, pattern);
631 cairo_pattern_destroy (pattern);
632 cairo_arc (cr, xc, yc, progress_radius_outer, start_angle, end_angle);
635 cairo_set_line_cap (cr, CAIRO_LINE_CAP_BUTT);
636 pattern = prolooks_create_gradient (pxs + 20.0, pys + 20.0, pxs + 89.0, pys + 87.0, bright, dark, 0.25, 0.25);
637 cairo_set_source (cr, pattern);
638 cairo_pattern_destroy (pattern);
639 cairo_set_line_width (cr, progress_width);
640 cairo_arc (cr, xc, yc, progress_radius, start_angle, value_angle + (G_PI / 180.0));
643 progress_shine = prolooks_create_gradient_str (pxs + 89.0, pys + 73.0, pxs + 34.0, pys + 16.0, "#ffffff", "#ffffff", 0.3, 0.04);
644 cairo_pattern_add_color_stop_rgba (progress_shine, 0.5, 1.0, 1.0, 1.0, 0.0);
646 cairo_pattern_add_color_stop_rgba (progress_shine, 0.75, 1.0, 1.0, 1.0, 0.3);
648 cairo_pattern_add_color_stop_rgba (progress_shine, 0.75, 1.0, 1.0, 1.0, 0.2);
650 cairo_set_source (cr, progress_shine);
651 cairo_set_line_width (cr, progress_width);
652 cairo_arc (cr, xc, yc, progress_radius, start_angle, end_angle);
654 cairo_pattern_destroy (progress_shine);
656 cairo_set_line_width (cr, 1.0);
657 cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);
658 cairo_arc (cr, xc, yc, progress_radius_inner, 0.0, 2 * G_PI);
659 pattern = prolooks_create_gradient_str (pxs + 35.0, pys + 31.0, pxs + 75.0, pys + 72.0, "#68625c", "#44494b", 1.0, 1.0);
660 cairo_set_source (cr, pattern);
661 cairo_pattern_destroy (pattern);
663 cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);
664 cairo_arc (cr, xc, yc, progress_radius_inner, 0.0, 2 * G_PI);
667 pattern = prolooks_create_gradient_str (pxs + 42.0, pys + 34.0, pxs + 68.0, pys + 70.0, "#e7ecef", "#9cafb8", 1.0, 1.0);
668 cairo_set_source (cr, pattern);
669 cairo_pattern_destroy (pattern);
670 cairo_arc (cr, xc, yc, knob_disc_radius, 0.0, 2 * G_PI);
673 cairo_set_line_width (cr, 2.0);
674 degrees = G_PI / 180.0;
675 pattern = prolooks_create_gradient_str (pxs + 38.0, pys + 34.0, pxs + 70.0, pys + 68.0, "#ffffff", "#caddf2", 0.2, 0.2);
676 cairo_set_source (cr, pattern);
677 cairo_pattern_destroy (pattern);
678 cairo_move_to (cr, xc, yc);
679 cairo_arc (cr, xc, yc, knob_disc_radius - 1, (-154) * degrees, (-120) * degrees);
680 cairo_move_to (cr, xc, yc);
681 cairo_arc (cr, xc, yc, knob_disc_radius - 1, (G_PI / 2.0) - (60 * degrees), (G_PI / 2.0) - (29 * degrees));
684 pattern = prolooks_create_gradient_str (pxs + 50.0, pys + 40.0, pxs + 62.0, pys + 60.0, "#a1adb6", "#47535c", 0.07, 0.15);
685 cairo_set_source (cr, pattern);
686 cairo_pattern_destroy (pattern);
687 cairo_move_to (cr, xc, yc);
688 cairo_arc (cr, xc, yc, knob_disc_radius - 1, (-67) * degrees, (-27) * degrees);
689 cairo_move_to (cr, xc, yc);
690 cairo_arc (cr, xc, yc, knob_disc_radius - 1, G_PI - (67 * degrees), G_PI - (27 * degrees));
693 knob_ripples = cairo_pattern_create_radial (xc, yc, 0.0, xc, yc, 4.0);
694 prolooks_add_color_stop_str (knob_ripples, 0.0, "#e7ecef", 0.05);
695 prolooks_add_color_stop_str (knob_ripples, 0.5, "#58717d", 0.05);
696 prolooks_add_color_stop_str (knob_ripples, 0.75, "#d1d9de", 0.05);
697 prolooks_add_color_stop_str (knob_ripples, 1.0, "#5d7682", 0.05);
698 cairo_pattern_set_extend (knob_ripples, CAIRO_EXTEND_REPEAT);
699 cairo_set_line_width (cr, 0.0);
700 cairo_set_source (cr, knob_ripples);
701 cairo_arc (cr, xc, yc, knob_disc_radius, 0.0, 2 * G_PI);
705 cairo_translate (cr, xc + (knob_disc_radius * value_x), yc + (knob_disc_radius * value_y));
706 cairo_rotate (cr, value_angle - G_PI);
707 pattern = prolooks_create_gradient_str (pxs + 16.0, pys + -2.0, pxs + 9.0, pys + 13.0, "#e7ecef", "#9cafb8", 0.8, 0.8);
708 cairo_set_source (cr, pattern);
709 cairo_pattern_destroy (pattern);
710 cairo_move_to (cr, 0.0, 4.0);
711 cairo_line_to (cr, 17.0, 4.0);
712 cairo_curve_to (cr, 19.0, 4.0, 21.0, 2.0, 21.0, 0.0);
713 cairo_curve_to (cr, 21.0, -2.0, 19.0, -4.0, 17.0, -4.0);
714 cairo_line_to (cr, 0.0, -4.0);
715 cairo_close_path (cr);
718 pattern = prolooks_create_gradient_str (pxs + 9.0, pys + -2.0, pxs + 9.0, pys + 2.0, "#68625c", "#44494b", 1.0, 1.0);
719 cairo_set_source (cr, pattern);
720 cairo_pattern_destroy (pattern);
721 cairo_move_to (cr, 0.0, 2.0);
722 cairo_line_to (cr, 16.0, 2.0);
723 cairo_curve_to (cr, 17.0, 2.0, 18.0, 1.0, 18.0, 0.0);
724 cairo_curve_to (cr, 18.0, -1.0, 17.0, -2.0, 16.0, -2.0);
725 cairo_line_to (cr, 0.0, -2.0);
726 cairo_close_path (cr);
730 cairo_set_line_width (cr, 2.0);
731 pattern = prolooks_create_gradient_str (pxs + 38.0, pys + 32.0, pxs + 70.0, pys + 67.0, "#3d3d3d", "#000000", 1.0, 1.0);
732 cairo_set_source (cr, pattern);
733 cairo_pattern_destroy (pattern);
734 cairo_arc (cr, xc, yc, knob_disc_radius, 0.0, 2 * G_PI);
737 cairo_pattern_destroy (knob_ripples);
741 MotionFeedback::set_lamp_color (const std::string& str)
744 *base_color = Gdk::Color (str);
746 base_color = new Gdk::Color (str);