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 MotionFeedback::MotionFeedback (Glib::RefPtr<Gdk::Pixbuf> pix,
44 boost::shared_ptr<PBD::Controllable> c,
46 double step_increment,
47 double page_increment,
48 const char *widget_name,
49 bool with_numeric_display,
54 , default_value (default_val)
55 , step_inc (step_increment)
56 , page_inc (page_increment)
63 char value_name[1024];
65 print_func = default_printer;
69 HBox* hpacker = manage (new HBox);
70 hpacker->pack_start (pixwin, true, true);
72 pack_start (*hpacker, false, false);
75 if (with_numeric_display) {
77 value_packer = new EventBox;
78 value_packer->set_name ("MotionControllerValue");
79 value_packer->show ();
80 value_packer->set_border_width (6);
83 value->set_justify (Gtk::JUSTIFY_RIGHT);
86 value_packer->add (*value);
88 hpacker = manage (new HBox);
89 hpacker->pack_start (*value_packer, true, false);
92 pack_start (*hpacker, false, false);
95 snprintf (value_name, sizeof(value_name), "%sValue", widget_name);
96 value->set_name (value_name);
101 print_func (buf, _controllable, print_arg);
102 value->set_text (buf);
106 pixwin.set_events (Gdk::BUTTON_PRESS_MASK|
107 Gdk::BUTTON_RELEASE_MASK|
108 Gdk::POINTER_MOTION_MASK|
109 Gdk::ENTER_NOTIFY_MASK|
110 Gdk::LEAVE_NOTIFY_MASK|
113 Gdk::KEY_RELEASE_MASK);
115 pixwin.set_flags (CAN_FOCUS);
117 /* Proxy all important events on the pixwin to ourselves */
119 pixwin.signal_button_press_event().connect(mem_fun (*this,&MotionFeedback::pixwin_button_press_event));
120 pixwin.signal_button_release_event().connect(mem_fun (*this,&MotionFeedback::pixwin_button_release_event));
121 pixwin.signal_motion_notify_event().connect(mem_fun (*this,&MotionFeedback::pixwin_motion_notify_event));
122 pixwin.signal_enter_notify_event().connect(mem_fun (*this,&MotionFeedback::pixwin_enter_notify_event));
123 pixwin.signal_leave_notify_event().connect(mem_fun (*this,&MotionFeedback::pixwin_leave_notify_event));
124 pixwin.signal_key_press_event().connect(mem_fun (*this,&MotionFeedback::pixwin_key_press_event));
125 pixwin.signal_scroll_event().connect(mem_fun (*this,&MotionFeedback::pixwin_scroll_event));
126 pixwin.signal_expose_event().connect(mem_fun (*this,&MotionFeedback::pixwin_expose_event), true);
127 pixwin.signal_size_request().connect(mem_fun (*this,&MotionFeedback::pixwin_size_request));
130 MotionFeedback::~MotionFeedback()
137 MotionFeedback::pixwin_button_press_event (GdkEventButton *ev)
139 if (binding_proxy.button_press_handler (ev)) {
143 switch (ev->button) {
145 grab_is_fine = false;
154 gtk_grab_add(GTK_WIDGET(pixwin.gobj()));
156 grabbed_y = ev->y_root;
157 grabbed_x = ev->x_root;
163 MotionFeedback::pixwin_button_release_event (GdkEventButton *ev)
165 if (!_controllable) {
169 switch (ev->button) {
171 if (pixwin.has_grab()) {
174 (GTK_WIDGET(pixwin.gobj()));
177 if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
178 /* shift click back to the default */
179 _controllable->set_value (default_value);
185 if (pixwin.has_grab()) {
188 (GTK_WIDGET(pixwin.gobj()));
194 return VBox::on_button_release_event (ev);
198 MotionFeedback::pixwin_motion_notify_event (GdkEventMotion *ev)
200 if (!_controllable) {
208 if (!pixwin.has_grab()) {
209 return VBox::on_motion_notify_event (ev);
212 multiplier = ((ev->state & Keyboard::TertiaryModifier) ? 100 : 1) *
213 ((ev->state & Keyboard::PrimaryModifier) ? 10 : 1) *
214 ((ev->state & Keyboard::SecondaryModifier) ? 0.1 : 1);
216 if (ev->state & Gdk::BUTTON1_MASK) {
218 /* vertical control */
220 y_delta = grabbed_y - ev->y_root;
221 grabbed_y = ev->y_root;
223 x_delta = ev->x_root - grabbed_x;
225 if (y_delta == 0) return TRUE;
227 y_delta *= 1 + (x_delta/100);
228 y_delta *= multiplier;
231 _controllable->set_value (adjust ((grab_is_fine ? step_inc : page_inc) * y_delta));
233 } else if (ev->state & Gdk::BUTTON2_MASK) {
237 double x = ev->x - subwidth/2;
238 double y = - ev->y + subwidth/2;
239 double angle = std::atan2 (y, x) / M_PI;
245 angle = -(2.0/3.0) * (angle - 1.25);
248 _controllable->set_value (to_control_value (angle));
256 MotionFeedback::pixwin_enter_notify_event (GdkEventCrossing*)
263 MotionFeedback::pixwin_leave_notify_event (GdkEventCrossing*)
265 pixwin.unset_flags (HAS_FOCUS);
270 MotionFeedback::pixwin_key_press_event (GdkEventKey *ev)
272 if (!_controllable) {
279 multiplier = ((ev->state & Keyboard::TertiaryModifier) ? 100.0 : 1.0) *
280 ((ev->state & Keyboard::SecondaryModifier) ? 10.0 : 1.0) *
281 ((ev->state & Keyboard::PrimaryModifier) ? 2.0 : 1.0);
283 switch (ev->keyval) {
286 _controllable->set_value (adjust (multiplier * page_inc));
291 _controllable->set_value (adjust (multiplier * page_inc));
296 _controllable->set_value (adjust (multiplier * step_inc));
301 _controllable->set_value (adjust (multiplier * step_inc));
306 _controllable->set_value (_controllable->lower());
311 _controllable->set_value (_controllable->upper());
319 MotionFeedback::pixwin_expose_event (GdkEventExpose*)
321 if (!_controllable) {
325 GdkWindow *window = pixwin.get_window()->gobj();
326 double display_val = to_display_value (_controllable->get_value());
327 int32_t phase = lrint (display_val * 64.0);
329 // skip middle phase except for true middle value
331 if (type == Rotary && phase == 32) {
332 double pt = (display_val * 2.0) - 1.0;
339 // endless knob: skip 90deg highlights unless the value is really a multiple of 90deg
341 if (type == Endless && !(phase % 16)) {
346 double nom = phase / 64.0;
347 double diff = display_val - nom;
350 phase = (phase + 1) % 64;
352 phase = (phase + 63) % 64;
355 phase = std::min (phase, (int32_t) 63);
357 GtkWidget* widget = GTK_WIDGET(pixwin.gobj());
358 gdk_draw_pixbuf (GDK_DRAWABLE(window), widget->style->fg_gc[0],
360 phase * subwidth, type * subheight,
361 /* center image in allocated area */
362 (get_width() - subwidth)/2,
364 subwidth, subheight, GDK_RGB_DITHER_NORMAL, 0, 0);
370 MotionFeedback::pixwin_scroll_event (GdkEventScroll* ev)
374 if (!_controllable) {
378 if ((ev->state & (Keyboard::PrimaryModifier|Keyboard::TertiaryModifier)) == (Keyboard::PrimaryModifier|Keyboard::TertiaryModifier)) {
380 } else if (ev->state & Keyboard::PrimaryModifier) {
386 switch (ev->direction) {
388 case GDK_SCROLL_RIGHT:
389 _controllable->set_value (adjust (scale * step_inc));
392 case GDK_SCROLL_DOWN:
393 case GDK_SCROLL_LEFT:
394 _controllable->set_value (adjust (-scale * step_inc));
402 MotionFeedback::pixwin_size_request (GtkRequisition* req)
404 req->width = subwidth;
405 req->height = subheight;
410 MotionFeedback::controllable_value_changed ()
414 print_func (buf, _controllable, print_arg);
415 value->set_text (buf);
418 pixwin.queue_draw ();
422 MotionFeedback::set_controllable (boost::shared_ptr<PBD::Controllable> c)
425 binding_proxy.set_controllable (c);
426 controller_connection.disconnect ();
429 c->Changed.connect (controller_connection, MISSING_INVALIDATOR, boost::bind (&MotionFeedback::controllable_value_changed, this), gui_context());
432 print_func (buf, _controllable, print_arg);
433 value->set_text (buf);
436 pixwin.queue_draw ();
439 boost::shared_ptr<PBD::Controllable>
440 MotionFeedback::controllable () const
442 return _controllable;
446 MotionFeedback::default_printer (char buf[32], const boost::shared_ptr<PBD::Controllable>& c, void *)
449 sprintf (buf, "%.2f", c->get_value());
455 Glib::RefPtr<Gdk::Pixbuf>
456 MotionFeedback::render_pixbuf (int size)
458 Glib::RefPtr<Gdk::Pixbuf> pixbuf;
462 snprintf (path, sizeof (path), "/tmp/mfimg%dXXXXXX", size);
464 if ((fd = mkstemp (path)) < 0) {
468 GdkColor col2 = {0,0,0,0};
469 GdkColor col3 = {0,0,0,0};
470 Gdk::Color base ("#b9feff");
475 hsv = prolooks_hsv_new_for_gdk_color (base.gobj());
476 bright = (prolooks_hsv_to_gdk_color (hsv, &col2), col2);
477 prolooks_hsv_set_saturation (hsv, 0.66);
478 prolooks_hsv_set_value (hsv, 0.67);
479 dark = (prolooks_hsv_to_gdk_color (hsv, &col3), col3);
481 cairo_surface_t *surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, size * 64, size);
482 cairo_t* cr = cairo_create (surface);
484 for (int i = 0; i < 64; ++i) {
486 core_draw (cr, i, size, 20, size*i, 0, &bright, &dark);
490 if (cairo_surface_write_to_png (surface, path) != CAIRO_STATUS_SUCCESS) {
491 std::cerr << "could not save image set to " << path << std::endl;
498 cairo_surface_destroy (surface);
501 pixbuf = Gdk::Pixbuf::create_from_file (path);
502 } catch (const Gdk::PixbufError &e) {
503 std::cerr << "Caught PixbufError: " << e.what() << std::endl;
508 g_message("Caught ... ");
518 MotionFeedback::core_draw (cairo_t* cr, int phase, double size, double progress_width, double xorigin, double yorigin,
519 const GdkColor* bright, const GdkColor* dark)
529 double start_angle_x;
530 double start_angle_y;
533 double progress_radius;
534 double progress_radius_inner;
535 double progress_radius_outer;
536 double knob_disc_radius;
537 cairo_pattern_t* pattern;
538 double progress_rim_width;
539 cairo_pattern_t* progress_shine;
541 cairo_pattern_t* knob_ripples;
545 g_return_if_fail (cr != NULL);
547 progress_radius = 40.0;
548 progress_radius_inner = progress_radius - (progress_width / 2.0);
549 progress_radius_outer = progress_radius + (progress_width / 2.0);
550 knob_disc_radius = progress_radius_inner - 5.0;
552 const double pad = 2.0; /* line width for boundary of progress ring */
553 const double actual_width = ((2.0 * pad) + (2.0 * progress_radius_outer));
554 const double scale_factor = size / actual_width;
556 /* knob center is at middle of the area bounded by (xorigin,yorigin) and (xorigin+size, yorigin+size)
557 but the coordinates will be scaled by the scale factor when cairo uses them so first
558 adjust them by the reciprocal of the scale factor.
561 xc = (xorigin + (size / 2.0)) * (1.0/scale_factor);
562 yc = (yorigin + (size / 2.0)) * (1.0/scale_factor);
564 pxs = xorigin * (1.0/scale_factor);
565 pys = yorigin * (1.0/scale_factor);
570 value = (phase * 1.0) / (65 - 1);
572 start_angle = ((180 - 65) * G_PI) / 180;
573 end_angle = ((360 + 65) * G_PI) / 180;
575 value_angle = start_angle + (value * (end_angle - start_angle));
576 value_x = cos (value_angle);
577 value_y = sin (value_angle);
578 start_angle_x = cos (start_angle);
579 start_angle_y = sin (start_angle);
580 end_angle_x = cos (end_angle);
581 end_angle_y = sin (end_angle);
583 cairo_scale (cr, scale_factor, scale_factor);
585 pattern = prolooks_create_gradient_str (pxs + 32.0, pys + 16.0, pxs + 75.0, pys + 16.0, "#d4c8b9", "#ae977b", 1.0, 1.0);
586 cairo_set_source (cr, pattern);
587 cairo_pattern_destroy (pattern);
588 cairo_set_line_width (cr, 2.0);
589 cairo_arc (cr, xc, yc, 31.5, 0.0, 2 * G_PI);
592 pattern = prolooks_create_gradient_str (pxs + 20.0, pys + 20.0, pxs + 89.0, pys + 87.0, "#2f2f4c", "#090a0d", 1.0, 1.0);
593 cairo_set_source (cr, pattern);
594 cairo_pattern_destroy (pattern);
595 cairo_set_line_width (cr, progress_width);
596 cairo_arc (cr, xc, yc, progress_radius, start_angle, end_angle);
599 pattern = prolooks_create_gradient (pxs + 20.0, pys + 20.0, pxs + 89.0, pys + 87.0, bright, dark, 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, value_angle);
606 cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND);
607 progress_rim_width = 2.0;
608 cairo_set_line_width (cr, progress_rim_width);
609 pattern = prolooks_create_gradient_str (pxs + 18.0, pys + 79.0, pxs + 35.0, pys + 79.0, "#dfd5c9", "#dfd5c9", 1.0, 0.0);
610 cairo_set_source (cr, pattern);
611 cairo_pattern_destroy (pattern);
612 cairo_move_to (cr, xc + (progress_radius_outer * start_angle_x), yc + (progress_radius_outer * start_angle_y));
613 cairo_line_to (cr, xc + (progress_radius_inner * start_angle_x), yc + (progress_radius_inner * start_angle_y));
616 prolooks_set_source_color_string (cr, "#000000", 1.0);
617 cairo_move_to (cr, xc + (progress_radius_outer * end_angle_x), yc + (progress_radius_outer * end_angle_y));
618 cairo_line_to (cr, xc + (progress_radius_inner * end_angle_x), yc + (progress_radius_inner * end_angle_y));
621 // pattern = prolooks_create_gradient_str (95.0, 6.0, 5.0, 44.0, "#dfd5c9", "#b0a090", 1.0, 1.0);
622 pattern = prolooks_create_gradient_str (pxs + 95.0, pys + 6.0, pxs + 5.0, pys + 44.0, "#000000", "#000000", 1.0, 1.0);
623 cairo_set_source (cr, pattern);
624 cairo_pattern_destroy (pattern);
625 cairo_arc (cr, xc, yc, progress_radius_outer, start_angle, end_angle);
628 cairo_set_line_cap (cr, CAIRO_LINE_CAP_BUTT);
629 pattern = prolooks_create_gradient (pxs + 20.0, pys + 20.0, pxs + 89.0, pys + 87.0, bright, dark, 0.25, 0.25);
630 cairo_set_source (cr, pattern);
631 cairo_pattern_destroy (pattern);
632 cairo_set_line_width (cr, progress_width);
633 cairo_arc (cr, xc, yc, progress_radius, start_angle, value_angle + (G_PI / 180.0));
636 progress_shine = prolooks_create_gradient_str (pxs + 89.0, pys + 73.0, pxs + 34.0, pys + 16.0, "#ffffff", "#ffffff", 0.3, 0.04);
637 cairo_pattern_add_color_stop_rgba (progress_shine, 0.5, 1.0, 1.0, 1.0, 0.0);
639 cairo_pattern_add_color_stop_rgba (progress_shine, 0.75, 1.0, 1.0, 1.0, 0.3);
641 cairo_pattern_add_color_stop_rgba (progress_shine, 0.75, 1.0, 1.0, 1.0, 0.2);
643 cairo_set_source (cr, progress_shine);
644 cairo_set_line_width (cr, progress_width);
645 cairo_arc (cr, xc, yc, progress_radius, start_angle, end_angle);
647 cairo_pattern_destroy (progress_shine);
649 cairo_set_line_width (cr, 1.0);
650 cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);
651 cairo_arc (cr, xc, yc, progress_radius_inner, 0.0, 2 * G_PI);
652 pattern = prolooks_create_gradient_str (pxs + 35.0, pys + 31.0, pxs + 75.0, pys + 72.0, "#68625c", "#44494b", 1.0, 1.0);
653 cairo_set_source (cr, pattern);
654 cairo_pattern_destroy (pattern);
656 cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);
657 cairo_arc (cr, xc, yc, progress_radius_inner, 0.0, 2 * G_PI);
660 pattern = prolooks_create_gradient_str (pxs + 42.0, pys + 34.0, pxs + 68.0, pys + 70.0, "#e7ecef", "#9cafb8", 1.0, 1.0);
661 cairo_set_source (cr, pattern);
662 cairo_pattern_destroy (pattern);
663 cairo_arc (cr, xc, yc, knob_disc_radius, 0.0, 2 * G_PI);
666 cairo_set_line_width (cr, 2.0);
667 degrees = G_PI / 180.0;
668 pattern = prolooks_create_gradient_str (pxs + 38.0, pys + 34.0, pxs + 70.0, pys + 68.0, "#ffffff", "#caddf2", 0.2, 0.2);
669 cairo_set_source (cr, pattern);
670 cairo_pattern_destroy (pattern);
671 cairo_move_to (cr, xc, yc);
672 cairo_arc (cr, xc, yc, knob_disc_radius - 1, (-154) * degrees, (-120) * degrees);
673 cairo_move_to (cr, xc, yc);
674 cairo_arc (cr, xc, yc, knob_disc_radius - 1, (G_PI / 2.0) - (60 * degrees), (G_PI / 2.0) - (29 * degrees));
677 pattern = prolooks_create_gradient_str (pxs + 50.0, pys + 40.0, pxs + 62.0, pys + 60.0, "#a1adb6", "#47535c", 0.07, 0.15);
678 cairo_set_source (cr, pattern);
679 cairo_pattern_destroy (pattern);
680 cairo_move_to (cr, xc, yc);
681 cairo_arc (cr, xc, yc, knob_disc_radius - 1, (-67) * degrees, (-27) * degrees);
682 cairo_move_to (cr, xc, yc);
683 cairo_arc (cr, xc, yc, knob_disc_radius - 1, G_PI - (67 * degrees), G_PI - (27 * degrees));
686 knob_ripples = cairo_pattern_create_radial (xc, yc, 0.0, xc, yc, 4.0);
687 prolooks_add_color_stop_str (knob_ripples, 0.0, "#e7ecef", 0.05);
688 prolooks_add_color_stop_str (knob_ripples, 0.5, "#58717d", 0.05);
689 prolooks_add_color_stop_str (knob_ripples, 0.75, "#d1d9de", 0.05);
690 prolooks_add_color_stop_str (knob_ripples, 1.0, "#5d7682", 0.05);
691 cairo_pattern_set_extend (knob_ripples, CAIRO_EXTEND_REPEAT);
692 cairo_set_line_width (cr, 0.0);
693 cairo_set_source (cr, knob_ripples);
694 cairo_arc (cr, xc, yc, knob_disc_radius, 0.0, 2 * G_PI);
698 cairo_translate (cr, xc + (knob_disc_radius * value_x), yc + (knob_disc_radius * value_y));
699 cairo_rotate (cr, value_angle - G_PI);
700 pattern = prolooks_create_gradient_str (pxs + 16.0, pys + -2.0, pxs + 9.0, pys + 13.0, "#e7ecef", "#9cafb8", 0.8, 0.8);
701 cairo_set_source (cr, pattern);
702 cairo_pattern_destroy (pattern);
703 cairo_move_to (cr, 0.0, 4.0);
704 cairo_line_to (cr, 17.0, 4.0);
705 cairo_curve_to (cr, 19.0, 4.0, 21.0, 2.0, 21.0, 0.0);
706 cairo_curve_to (cr, 21.0, -2.0, 19.0, -4.0, 17.0, -4.0);
707 cairo_line_to (cr, 0.0, -4.0);
708 cairo_close_path (cr);
711 pattern = prolooks_create_gradient_str (pxs + 9.0, pys + -2.0, pxs + 9.0, pys + 2.0, "#68625c", "#44494b", 1.0, 1.0);
712 cairo_set_source (cr, pattern);
713 cairo_pattern_destroy (pattern);
714 cairo_move_to (cr, 0.0, 2.0);
715 cairo_line_to (cr, 16.0, 2.0);
716 cairo_curve_to (cr, 17.0, 2.0, 18.0, 1.0, 18.0, 0.0);
717 cairo_curve_to (cr, 18.0, -1.0, 17.0, -2.0, 16.0, -2.0);
718 cairo_line_to (cr, 0.0, -2.0);
719 cairo_close_path (cr);
723 cairo_set_line_width (cr, 2.0);
724 pattern = prolooks_create_gradient_str (pxs + 38.0, pys + 32.0, pxs + 70.0, pys + 67.0, "#3d3d3d", "#000000", 1.0, 1.0);
725 cairo_set_source (cr, pattern);
726 cairo_pattern_destroy (pattern);
727 cairo_arc (cr, xc, yc, knob_disc_radius, 0.0, 2 * G_PI);
730 cairo_pattern_destroy (knob_ripples);