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);
97 hpacker->set_border_width (6);
99 pack_start (*hpacker, false, false);
102 snprintf (value_name, sizeof(value_name), "%sValue", widget_name);
103 value->set_name (value_name);
108 print_func (buf, _controllable, print_arg);
109 value->set_text (buf);
113 pixwin.set_events (Gdk::BUTTON_PRESS_MASK|
114 Gdk::BUTTON_RELEASE_MASK|
115 Gdk::POINTER_MOTION_MASK|
116 Gdk::ENTER_NOTIFY_MASK|
117 Gdk::LEAVE_NOTIFY_MASK|
120 Gdk::KEY_RELEASE_MASK);
122 pixwin.set_flags (CAN_FOCUS);
124 /* Proxy all important events on the pixwin to ourselves */
126 pixwin.signal_button_press_event().connect(mem_fun (*this,&MotionFeedback::pixwin_button_press_event));
127 pixwin.signal_button_release_event().connect(mem_fun (*this,&MotionFeedback::pixwin_button_release_event));
128 pixwin.signal_motion_notify_event().connect(mem_fun (*this,&MotionFeedback::pixwin_motion_notify_event));
129 pixwin.signal_enter_notify_event().connect(mem_fun (*this,&MotionFeedback::pixwin_enter_notify_event));
130 pixwin.signal_leave_notify_event().connect(mem_fun (*this,&MotionFeedback::pixwin_leave_notify_event));
131 pixwin.signal_key_press_event().connect(mem_fun (*this,&MotionFeedback::pixwin_key_press_event));
132 pixwin.signal_scroll_event().connect(mem_fun (*this,&MotionFeedback::pixwin_scroll_event));
133 pixwin.signal_expose_event().connect(mem_fun (*this,&MotionFeedback::pixwin_expose_event), true);
134 pixwin.signal_size_request().connect(mem_fun (*this,&MotionFeedback::pixwin_size_request));
137 MotionFeedback::~MotionFeedback()
144 MotionFeedback::pixwin_button_press_event (GdkEventButton *ev)
146 if (binding_proxy.button_press_handler (ev)) {
150 switch (ev->button) {
152 grab_is_fine = false;
161 gtk_grab_add(GTK_WIDGET(pixwin.gobj()));
163 grabbed_y = ev->y_root;
164 grabbed_x = ev->x_root;
170 MotionFeedback::pixwin_button_release_event (GdkEventButton *ev)
172 if (!_controllable) {
176 switch (ev->button) {
178 if (pixwin.has_grab()) {
181 (GTK_WIDGET(pixwin.gobj()));
184 if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
185 /* shift click back to the default */
186 _controllable->set_value (default_value);
188 } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
189 /* ctrl click back to the minimum value */
190 _controllable->set_value (_controllable->lower ());
195 if (pixwin.has_grab()) {
198 (GTK_WIDGET(pixwin.gobj()));
204 return VBox::on_button_release_event (ev);
208 MotionFeedback::pixwin_motion_notify_event (GdkEventMotion *ev)
210 if (!_controllable) {
218 if (!pixwin.has_grab()) {
219 return VBox::on_motion_notify_event (ev);
222 multiplier = ((ev->state & Keyboard::TertiaryModifier) ? 100 : 1) *
223 ((ev->state & Keyboard::PrimaryModifier) ? 10 : 1) *
224 ((ev->state & Keyboard::SecondaryModifier) ? 0.1 : 1);
226 if (ev->state & Gdk::BUTTON1_MASK) {
228 /* vertical control */
230 y_delta = grabbed_y - ev->y_root;
231 grabbed_y = ev->y_root;
233 x_delta = ev->x_root - grabbed_x;
235 if (y_delta == 0) return TRUE;
237 y_delta *= 1 + (x_delta/100);
238 y_delta *= multiplier;
241 _controllable->set_value (adjust ((grab_is_fine ? step_inc : page_inc) * y_delta));
243 } else if (ev->state & Gdk::BUTTON2_MASK) {
247 double x = ev->x - subwidth/2;
248 double y = - ev->y + subwidth/2;
249 double angle = std::atan2 (y, x) / M_PI;
255 angle = -(2.0/3.0) * (angle - 1.25);
258 _controllable->set_value (to_control_value (angle));
266 MotionFeedback::pixwin_enter_notify_event (GdkEventCrossing*)
273 MotionFeedback::pixwin_leave_notify_event (GdkEventCrossing*)
275 pixwin.unset_flags (HAS_FOCUS);
280 MotionFeedback::pixwin_key_press_event (GdkEventKey *ev)
282 if (!_controllable) {
289 multiplier = ((ev->state & Keyboard::TertiaryModifier) ? 100.0 : 1.0) *
290 ((ev->state & Keyboard::SecondaryModifier) ? 10.0 : 1.0) *
291 ((ev->state & Keyboard::PrimaryModifier) ? 2.0 : 1.0);
293 switch (ev->keyval) {
296 _controllable->set_value (adjust (multiplier * page_inc));
301 _controllable->set_value (adjust (-multiplier * page_inc));
306 _controllable->set_value (adjust (multiplier * step_inc));
311 _controllable->set_value (adjust (-multiplier * step_inc));
316 _controllable->set_value (_controllable->lower());
321 _controllable->set_value (_controllable->upper());
329 MotionFeedback::pixwin_expose_event (GdkEventExpose*)
331 if (!_controllable) {
335 GdkWindow *window = pixwin.get_window()->gobj();
336 double display_val = to_display_value (_controllable->get_value());
337 int32_t phase = lrint (display_val * 64.0);
339 // skip middle phase except for true middle value
341 if (type == Rotary && phase == 32) {
342 double pt = (display_val * 2.0) - 1.0;
349 // endless knob: skip 90deg highlights unless the value is really a multiple of 90deg
351 if (type == Endless && !(phase % 16)) {
356 double nom = phase / 64.0;
357 double diff = display_val - nom;
360 phase = (phase + 1) % 64;
362 phase = (phase + 63) % 64;
365 phase = std::min (phase, (int32_t) 63);
367 GtkWidget* widget = GTK_WIDGET(pixwin.gobj());
368 gdk_draw_pixbuf (GDK_DRAWABLE(window), widget->style->fg_gc[0],
370 phase * subwidth, type * subheight,
371 /* center image in allocated area */
372 (get_width() - subwidth)/2,
374 subwidth, subheight, GDK_RGB_DITHER_NORMAL, 0, 0);
380 MotionFeedback::pixwin_scroll_event (GdkEventScroll* ev)
384 if (!_controllable) {
388 if (ev->state & Keyboard::GainFineScaleModifier) {
389 if (ev->state & Keyboard::GainExtraFineScaleModifier) {
398 switch (ev->direction) {
400 case GDK_SCROLL_RIGHT:
401 _controllable->set_value (adjust (scale * page_inc));
404 case GDK_SCROLL_DOWN:
405 case GDK_SCROLL_LEFT:
406 _controllable->set_value (adjust (-scale * page_inc));
414 MotionFeedback::pixwin_size_request (GtkRequisition* req)
416 req->width = subwidth;
417 req->height = subheight;
422 MotionFeedback::controllable_value_changed ()
426 print_func (buf, _controllable, print_arg);
427 value->set_text (buf);
430 pixwin.queue_draw ();
434 MotionFeedback::set_controllable (boost::shared_ptr<PBD::Controllable> c)
437 binding_proxy.set_controllable (c);
438 controller_connection.disconnect ();
441 c->Changed.connect (controller_connection, MISSING_INVALIDATOR, boost::bind (&MotionFeedback::controllable_value_changed, this), gui_context());
444 print_func (buf, _controllable, print_arg);
445 value->set_text (buf);
448 pixwin.queue_draw ();
451 boost::shared_ptr<PBD::Controllable>
452 MotionFeedback::controllable () const
454 return _controllable;
458 MotionFeedback::default_printer (char buf[32], const boost::shared_ptr<PBD::Controllable>& c, void *)
461 sprintf (buf, "%.2f", c->get_value());
467 Glib::RefPtr<Gdk::Pixbuf>
468 MotionFeedback::render_pixbuf (int size)
470 Glib::RefPtr<Gdk::Pixbuf> pixbuf;
474 snprintf (path, sizeof (path), "/tmp/mfimg%dXXXXXX", size);
476 if ((fd = mkstemp (path)) < 0) {
480 GdkColor col2 = {0,0,0,0};
481 GdkColor col3 = {0,0,0,0};
486 hsv = prolooks_hsv_new_for_gdk_color (base_color->gobj());
487 bright = (prolooks_hsv_to_gdk_color (hsv, &col2), col2);
488 prolooks_hsv_set_saturation (hsv, 0.66);
489 prolooks_hsv_set_value (hsv, 0.67);
490 dark = (prolooks_hsv_to_gdk_color (hsv, &col3), col3);
492 cairo_surface_t *surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, size * 64, size);
493 cairo_t* cr = cairo_create (surface);
495 for (int i = 0; i < 64; ++i) {
497 core_draw (cr, i, size, 20, size*i, 0, &bright, &dark);
501 if (cairo_surface_write_to_png (surface, path) != CAIRO_STATUS_SUCCESS) {
502 std::cerr << "could not save image set to " << path << std::endl;
509 cairo_surface_destroy (surface);
512 pixbuf = Gdk::Pixbuf::create_from_file (path);
513 } catch (const Gdk::PixbufError &e) {
514 std::cerr << "Caught PixbufError: " << e.what() << std::endl;
519 g_message("Caught ... ");
529 MotionFeedback::core_draw (cairo_t* cr, int phase, double size, double progress_width, double xorigin, double yorigin,
530 const GdkColor* bright, const GdkColor* dark)
540 double start_angle_x;
541 double start_angle_y;
544 double progress_radius;
545 double progress_radius_inner;
546 double progress_radius_outer;
547 double knob_disc_radius;
548 cairo_pattern_t* pattern;
549 double progress_rim_width;
550 cairo_pattern_t* progress_shine;
552 cairo_pattern_t* knob_ripples;
556 g_return_if_fail (cr != NULL);
558 progress_radius = 40.0;
559 progress_radius_inner = progress_radius - (progress_width / 2.0);
560 progress_radius_outer = progress_radius + (progress_width / 2.0);
561 knob_disc_radius = progress_radius_inner - 5.0;
563 const double pad = 2.0; /* line width for boundary of progress ring */
564 const double actual_width = ((2.0 * pad) + (2.0 * progress_radius_outer));
565 const double scale_factor = size / actual_width;
567 /* knob center is at middle of the area bounded by (xorigin,yorigin) and (xorigin+size, yorigin+size)
568 but the coordinates will be scaled by the scale factor when cairo uses them so first
569 adjust them by the reciprocal of the scale factor.
572 xc = (xorigin + (size / 2.0)) * (1.0/scale_factor);
573 yc = (yorigin + (size / 2.0)) * (1.0/scale_factor);
575 pxs = xorigin * (1.0/scale_factor);
576 pys = yorigin * (1.0/scale_factor);
581 value = (phase * 1.0) / (65 - 1);
583 start_angle = ((180 - 65) * G_PI) / 180;
584 end_angle = ((360 + 65) * G_PI) / 180;
586 value_angle = start_angle + (value * (end_angle - start_angle));
587 value_x = cos (value_angle);
588 value_y = sin (value_angle);
589 start_angle_x = cos (start_angle);
590 start_angle_y = sin (start_angle);
591 end_angle_x = cos (end_angle);
592 end_angle_y = sin (end_angle);
594 cairo_scale (cr, scale_factor, scale_factor);
596 pattern = prolooks_create_gradient_str (pxs + 32.0, pys + 16.0, pxs + 75.0, pys + 16.0, "#d4c8b9", "#ae977b", 1.0, 1.0);
597 cairo_set_source (cr, pattern);
598 cairo_pattern_destroy (pattern);
599 cairo_set_line_width (cr, 2.0);
600 cairo_arc (cr, xc, yc, 31.5, 0.0, 2 * G_PI);
603 pattern = prolooks_create_gradient_str (pxs + 20.0, pys + 20.0, pxs + 89.0, pys + 87.0, "#2f2f4c", "#090a0d", 1.0, 1.0);
604 cairo_set_source (cr, pattern);
605 cairo_pattern_destroy (pattern);
606 cairo_set_line_width (cr, progress_width);
607 cairo_arc (cr, xc, yc, progress_radius, start_angle, end_angle);
610 pattern = prolooks_create_gradient (pxs + 20.0, pys + 20.0, pxs + 89.0, pys + 87.0, bright, dark, 1.0, 1.0);
611 cairo_set_source (cr, pattern);
612 cairo_pattern_destroy (pattern);
613 cairo_set_line_width (cr, progress_width);
614 cairo_arc (cr, xc, yc, progress_radius, start_angle, value_angle);
617 cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND);
618 progress_rim_width = 2.0;
619 cairo_set_line_width (cr, progress_rim_width);
620 pattern = prolooks_create_gradient_str (pxs + 18.0, pys + 79.0, pxs + 35.0, pys + 79.0, "#dfd5c9", "#dfd5c9", 1.0, 0.0);
621 cairo_set_source (cr, pattern);
622 cairo_pattern_destroy (pattern);
623 cairo_move_to (cr, xc + (progress_radius_outer * start_angle_x), yc + (progress_radius_outer * start_angle_y));
624 cairo_line_to (cr, xc + (progress_radius_inner * start_angle_x), yc + (progress_radius_inner * start_angle_y));
627 prolooks_set_source_color_string (cr, "#000000", 1.0);
628 cairo_move_to (cr, xc + (progress_radius_outer * end_angle_x), yc + (progress_radius_outer * end_angle_y));
629 cairo_line_to (cr, xc + (progress_radius_inner * end_angle_x), yc + (progress_radius_inner * end_angle_y));
632 // pattern = prolooks_create_gradient_str (95.0, 6.0, 5.0, 44.0, "#dfd5c9", "#b0a090", 1.0, 1.0);
633 pattern = prolooks_create_gradient_str (pxs + 95.0, pys + 6.0, pxs + 5.0, pys + 44.0, "#000000", "#000000", 1.0, 1.0);
634 cairo_set_source (cr, pattern);
635 cairo_pattern_destroy (pattern);
636 cairo_arc (cr, xc, yc, progress_radius_outer, start_angle, end_angle);
639 cairo_set_line_cap (cr, CAIRO_LINE_CAP_BUTT);
640 pattern = prolooks_create_gradient (pxs + 20.0, pys + 20.0, pxs + 89.0, pys + 87.0, bright, dark, 0.25, 0.25);
641 cairo_set_source (cr, pattern);
642 cairo_pattern_destroy (pattern);
643 cairo_set_line_width (cr, progress_width);
644 cairo_arc (cr, xc, yc, progress_radius, start_angle, value_angle + (G_PI / 180.0));
647 progress_shine = prolooks_create_gradient_str (pxs + 89.0, pys + 73.0, pxs + 34.0, pys + 16.0, "#ffffff", "#ffffff", 0.3, 0.04);
648 cairo_pattern_add_color_stop_rgba (progress_shine, 0.5, 1.0, 1.0, 1.0, 0.0);
650 cairo_pattern_add_color_stop_rgba (progress_shine, 0.75, 1.0, 1.0, 1.0, 0.3);
652 cairo_pattern_add_color_stop_rgba (progress_shine, 0.75, 1.0, 1.0, 1.0, 0.2);
654 cairo_set_source (cr, progress_shine);
655 cairo_set_line_width (cr, progress_width);
656 cairo_arc (cr, xc, yc, progress_radius, start_angle, end_angle);
658 cairo_pattern_destroy (progress_shine);
660 cairo_set_line_width (cr, 1.0);
661 cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);
662 cairo_arc (cr, xc, yc, progress_radius_inner, 0.0, 2 * G_PI);
663 pattern = prolooks_create_gradient_str (pxs + 35.0, pys + 31.0, pxs + 75.0, pys + 72.0, "#68625c", "#44494b", 1.0, 1.0);
664 cairo_set_source (cr, pattern);
665 cairo_pattern_destroy (pattern);
667 cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);
668 cairo_arc (cr, xc, yc, progress_radius_inner, 0.0, 2 * G_PI);
671 pattern = prolooks_create_gradient_str (pxs + 42.0, pys + 34.0, pxs + 68.0, pys + 70.0, "#e7ecef", "#9cafb8", 1.0, 1.0);
672 cairo_set_source (cr, pattern);
673 cairo_pattern_destroy (pattern);
674 cairo_arc (cr, xc, yc, knob_disc_radius, 0.0, 2 * G_PI);
677 cairo_set_line_width (cr, 2.0);
678 degrees = G_PI / 180.0;
679 pattern = prolooks_create_gradient_str (pxs + 38.0, pys + 34.0, pxs + 70.0, pys + 68.0, "#ffffff", "#caddf2", 0.2, 0.2);
680 cairo_set_source (cr, pattern);
681 cairo_pattern_destroy (pattern);
682 cairo_move_to (cr, xc, yc);
683 cairo_arc (cr, xc, yc, knob_disc_radius - 1, (-154) * degrees, (-120) * degrees);
684 cairo_move_to (cr, xc, yc);
685 cairo_arc (cr, xc, yc, knob_disc_radius - 1, (G_PI / 2.0) - (60 * degrees), (G_PI / 2.0) - (29 * degrees));
688 pattern = prolooks_create_gradient_str (pxs + 50.0, pys + 40.0, pxs + 62.0, pys + 60.0, "#a1adb6", "#47535c", 0.07, 0.15);
689 cairo_set_source (cr, pattern);
690 cairo_pattern_destroy (pattern);
691 cairo_move_to (cr, xc, yc);
692 cairo_arc (cr, xc, yc, knob_disc_radius - 1, (-67) * degrees, (-27) * degrees);
693 cairo_move_to (cr, xc, yc);
694 cairo_arc (cr, xc, yc, knob_disc_radius - 1, G_PI - (67 * degrees), G_PI - (27 * degrees));
697 knob_ripples = cairo_pattern_create_radial (xc, yc, 0.0, xc, yc, 4.0);
698 prolooks_add_color_stop_str (knob_ripples, 0.0, "#e7ecef", 0.05);
699 prolooks_add_color_stop_str (knob_ripples, 0.5, "#58717d", 0.05);
700 prolooks_add_color_stop_str (knob_ripples, 0.75, "#d1d9de", 0.05);
701 prolooks_add_color_stop_str (knob_ripples, 1.0, "#5d7682", 0.05);
702 cairo_pattern_set_extend (knob_ripples, CAIRO_EXTEND_REPEAT);
703 cairo_set_line_width (cr, 0.0);
704 cairo_set_source (cr, knob_ripples);
705 cairo_arc (cr, xc, yc, knob_disc_radius, 0.0, 2 * G_PI);
709 cairo_translate (cr, xc + (knob_disc_radius * value_x), yc + (knob_disc_radius * value_y));
710 cairo_rotate (cr, value_angle - G_PI);
711 pattern = prolooks_create_gradient_str (pxs + 16.0, pys + -2.0, pxs + 9.0, pys + 13.0, "#e7ecef", "#9cafb8", 0.8, 0.8);
712 cairo_set_source (cr, pattern);
713 cairo_pattern_destroy (pattern);
714 cairo_move_to (cr, 0.0, 4.0);
715 cairo_line_to (cr, 17.0, 4.0);
716 cairo_curve_to (cr, 19.0, 4.0, 21.0, 2.0, 21.0, 0.0);
717 cairo_curve_to (cr, 21.0, -2.0, 19.0, -4.0, 17.0, -4.0);
718 cairo_line_to (cr, 0.0, -4.0);
719 cairo_close_path (cr);
722 pattern = prolooks_create_gradient_str (pxs + 9.0, pys + -2.0, pxs + 9.0, pys + 2.0, "#68625c", "#44494b", 1.0, 1.0);
723 cairo_set_source (cr, pattern);
724 cairo_pattern_destroy (pattern);
725 cairo_move_to (cr, 0.0, 2.0);
726 cairo_line_to (cr, 16.0, 2.0);
727 cairo_curve_to (cr, 17.0, 2.0, 18.0, 1.0, 18.0, 0.0);
728 cairo_curve_to (cr, 18.0, -1.0, 17.0, -2.0, 16.0, -2.0);
729 cairo_line_to (cr, 0.0, -2.0);
730 cairo_close_path (cr);
734 cairo_set_line_width (cr, 2.0);
735 pattern = prolooks_create_gradient_str (pxs + 38.0, pys + 32.0, pxs + 70.0, pys + 67.0, "#3d3d3d", "#000000", 1.0, 1.0);
736 cairo_set_source (cr, pattern);
737 cairo_pattern_destroy (pattern);
738 cairo_arc (cr, xc, yc, knob_disc_radius, 0.0, 2 * G_PI);
741 cairo_pattern_destroy (knob_ripples);
745 MotionFeedback::set_lamp_color (const std::string& str)
748 *base_color = Gdk::Color (str);
750 base_color = new Gdk::Color (str);