2 Copyright (C) 2010 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.
24 #include <pangomm/layout.h>
26 #include "pbd/compose.h"
27 #include "pbd/error.h"
28 #include "pbd/stacktrace.h"
30 #include "gtkmm2ext/utils.h"
31 #include "gtkmm2ext/rgb_macros.h"
32 #include "gtkmm2ext/gui_thread.h"
34 #include "ardour/rc_configuration.h" // for widget prelight preference
36 #include "canvas/utils.h"
38 #include "ardour_button.h"
39 #include "ardour_ui.h"
40 #include "global_signals.h"
44 #define REFLECTION_HEIGHT 2
54 ArdourButton::Element ArdourButton::default_elements = ArdourButton::Element (ArdourButton::Edge|ArdourButton::Body|ArdourButton::Text);
55 ArdourButton::Element ArdourButton::led_default_elements = ArdourButton::Element (ArdourButton::default_elements|ArdourButton::Indicator);
56 ArdourButton::Element ArdourButton::just_led_default_elements = ArdourButton::Element (ArdourButton::Edge|ArdourButton::Body|ArdourButton::Indicator);
58 ArdourButton::ArdourButton (Element e)
60 , _tweaks (Tweaks (0))
61 , _char_pixel_width (0)
62 , _char_pixel_height (0)
66 , _corner_radius (4.0)
71 , fill_inactive_color (0)
72 , fill_active_color (0)
73 , text_active_color(0)
74 , text_inactive_color(0)
76 , led_inactive_color(0)
79 , led_inset_pattern (0)
81 , _act_on_release (true)
83 , _fixed_diameter (true)
84 , _distinct_led_click (false)
87 , _fixed_colors_set (false)
88 , _fallthrough_to_parent (false)
90 ARDOUR_UI_UTILS::ColorsChanged.connect (sigc::mem_fun (*this, &ArdourButton::color_handler));
93 ArdourButton::ArdourButton (const std::string& str, Element e)
95 , _tweaks (Tweaks (0))
99 , _corner_radius (4.0)
104 , fill_inactive_color (0)
105 , fill_active_color (0)
106 , text_active_color(0)
107 , text_inactive_color(0)
108 , led_active_color(0)
109 , led_inactive_color(0)
111 , concave_pattern (0)
112 , led_inset_pattern (0)
114 , _act_on_release (true)
116 , _fixed_diameter (true)
117 , _distinct_led_click (false)
120 , _fixed_colors_set (false)
125 ArdourButton::~ArdourButton()
129 if (convex_pattern) {
130 cairo_pattern_destroy (convex_pattern);
133 if (concave_pattern) {
134 cairo_pattern_destroy (concave_pattern);
137 if (led_inset_pattern) {
138 cairo_pattern_destroy (led_inset_pattern);
144 ArdourButton::set_text (const std::string& str)
148 if (!_layout && !_text.empty()) {
149 _layout = Pango::Layout::create (get_pango_context());
153 _layout->set_text (str);
160 ArdourButton::set_markup (const std::string& str)
165 _layout = Pango::Layout::create (get_pango_context());
168 _layout->set_markup (str);
173 ArdourButton::set_angle (const double angle)
179 ArdourButton::set_alignment (const float xa, const float ya)
186 ArdourButton::render (cairo_t* cr, cairo_rectangle_t *)
190 if ( active_state() == Gtkmm2ext::ExplicitActive ) {
191 text_color = text_active_color;
192 led_color = led_active_color;
194 text_color = text_inactive_color;
195 led_color = led_inactive_color;
198 void (*rounded_function)(cairo_t*, double, double, double, double, double);
200 switch (_corner_mask) {
201 case 0x1: /* upper left only */
202 rounded_function = Gtkmm2ext::rounded_top_left_rectangle;
204 case 0x2: /* upper right only */
205 rounded_function = Gtkmm2ext::rounded_top_right_rectangle;
207 case 0x3: /* upper only */
208 rounded_function = Gtkmm2ext::rounded_top_rectangle;
210 /* should really have functions for lower right, lower left,
211 lower only, but for now, we don't
214 rounded_function = Gtkmm2ext::rounded_rectangle;
217 if (!_fixed_diameter) {
218 _diameter = std::min (get_width(), get_height());
222 if ((_elements & Body)==Body) {
223 rounded_function (cr, 1, 1, get_width() - 2, get_height() - 2, _corner_radius);
224 if (active_state() == Gtkmm2ext::ImplicitActive && !((_elements & Indicator)==Indicator)) {
225 ArdourCanvas::set_source_rgba (cr, fill_inactive_color);
227 } else if ( (active_state() == Gtkmm2ext::ExplicitActive) && !((_elements & Indicator)==Indicator) ) {
229 ArdourCanvas::set_source_rgba (cr, fill_active_color);
231 } else { //inactive, or it has an indicator
233 ArdourCanvas::set_source_rgba (cr, fill_inactive_color);
238 //show the "convex" or "concave" gradient
239 if (!_flat_buttons) {
240 if ( active_state() == Gtkmm2ext::ExplicitActive && !((_elements & Indicator)==Indicator) ) {
242 cairo_set_source (cr, concave_pattern);
243 Gtkmm2ext::rounded_rectangle (cr, 1, 1, get_width() - 2, get_height() - 2, _corner_radius);
246 cairo_set_source (cr, convex_pattern);
247 Gtkmm2ext::rounded_rectangle (cr, 1, 1, get_width() - 2, get_height() - 2, _corner_radius);
252 // indicator border on top of gradient
253 if ((_elements & Body)==Body) {
254 if (active_state() == Gtkmm2ext::ImplicitActive && !((_elements & Indicator)==Indicator)) {
255 cairo_set_line_width (cr, 3.0);
256 rounded_function (cr, 1.5, 1.5, get_width() - 3, get_height() - 3, _corner_radius);
257 ArdourCanvas::set_source_rgba (cr, fill_active_color);
263 if ((_elements & (Body|Edge)) == (Body|Edge)) {
264 rounded_function (cr, .5, .5, get_width() - 1, get_height() - 1, _corner_radius);
265 cairo_set_source_rgba (cr, 0, 0, 0, 1);
266 cairo_set_line_width (cr, 1.0);
274 x = (get_width() - _pixbuf->get_width())/2.0;
275 y = (get_height() - _pixbuf->get_height())/2.0;
277 //if this is a DropDown with an icon, then we need to
278 //move the icon left slightly to accomomodate the arrow
279 if (((_elements & Menu)==Menu)) {
281 cairo_translate (cr, -8,0 );
284 cairo_rectangle (cr, x, y, _pixbuf->get_width(), _pixbuf->get_height());
285 gdk_cairo_set_source_pixbuf (cr, _pixbuf->gobj(), x, y);
288 //..and then return to our previous drawing position
289 if (((_elements & Menu)==Menu)) {
295 if (get_width() < 75 || (_elements & Menu) ) {
302 if ( !_pixbuf && ((_elements & Text)==Text) && !_text.empty()) {
305 cairo_rectangle (cr, 2, 1, get_width()-4, get_height()-2);
309 ArdourCanvas::set_source_rgba (cr, text_color);
311 if ( (_elements & Menu) == Menu) {
312 cairo_move_to (cr, rint(text_margin), rint((get_height() - _text_height)/2.0));
313 pango_cairo_show_layout (cr, _layout->gobj());
314 } else if ( (_elements & Indicator) == Indicator) {
316 cairo_move_to (cr, rint(text_margin + _diameter + 4), rint((get_height() - _text_height)/2.0));
318 cairo_move_to (cr, rint(text_margin), rint((get_height() - _text_height)/2.0));
320 pango_cairo_show_layout (cr, _layout->gobj());
328 cairo_save (cr); // TODO retain rotataion.. adj. LED,...
329 cairo_rotate(cr, _angle * M_PI / 180.0);
330 cairo_device_to_user(cr, &ww, &wh);
331 xa = (ww - _text_width) * _xalign;
332 ya = (wh - _text_height) * _yalign;
334 /* quick hack for left/bottom alignment at -90deg
335 * TODO this should be generalized incl rotation.
336 * currently only 'user' of this API is meter_strip.cc
338 if (_xalign < 0) xa = (ww * fabs(_xalign) + text_margin);
340 // TODO honor left/right text_margin with min/max()
342 cairo_move_to (cr, rint(.5 + xa), rint(ya));
343 pango_cairo_update_layout(cr, _layout->gobj());
344 pango_cairo_show_layout (cr, _layout->gobj());
351 if (((_elements & Menu)==Menu)) {
352 const float trih = ceil(_diameter/2.0);
353 const float triw2 = ceil(.577 * _diameter/2.0); // 1/sqrt(3) Equilateral triangle
355 cairo_set_source_rgba (cr, 1, 1, 1, 0.4);
356 cairo_move_to(cr, get_width() - triw2 - 3. , rint((get_height() + trih) / 2.0));
357 cairo_rel_line_to(cr, -triw2, -trih);
358 cairo_rel_line_to(cr, 2. * triw2, 0);
359 cairo_close_path(cr);
361 cairo_set_source_rgba (cr, 1, 1, 1, 0.4);
364 cairo_move_to(cr, get_width() - triw2 - 3 , rint((get_height() + trih) / 2.0));
365 cairo_rel_line_to(cr, .5 - triw2, .5 - trih);
366 cairo_rel_line_to(cr, 2. * triw2 - 1, 0);
367 cairo_close_path(cr);
368 cairo_set_source_rgba (cr, 0, 0, 0, 0.8);
369 cairo_set_line_width(cr, 1);
374 if (((_elements & Indicator)==Indicator)) {
376 /* move to the center of the indicator/led */
380 if (_elements & Text) {
382 cairo_translate (cr, text_margin + (_diameter/2.0), get_height()/2.0);
384 cairo_translate (cr, get_width() - ((_diameter/2.0) + 4.0), get_height()/2.0);
387 cairo_translate (cr, get_width()/2.0, get_height()/2.0);
391 if (!_flat_buttons) {
392 cairo_arc (cr, 0, 0, _diameter/2, 0, 2 * M_PI);
393 cairo_set_source (cr, led_inset_pattern);
398 cairo_set_source_rgb (cr, 0, 0, 0);
399 cairo_arc (cr, 0, 0, _diameter/2-1, 0, 2 * M_PI);
403 ArdourCanvas::set_source_rgba (cr, led_color);
404 cairo_arc (cr, 0, 0, _diameter/2-3, 0, 2 * M_PI);
411 // a transparent gray layer to indicate insensitivity
412 if ((visual_state() & Gtkmm2ext::Insensitive)) {
413 rounded_function (cr, 1, 1, get_width() - 2, get_height() - 2, _corner_radius);
414 cairo_set_source_rgba (cr, 0.505, 0.517, 0.525, 0.6);
418 // if requested, show hovering
419 if (ARDOUR::Config->get_widget_prelight()
420 && !((visual_state() & Gtkmm2ext::Insensitive))) {
422 rounded_function (cr, 1, 1, get_width() - 2, get_height() - 2, _corner_radius);
423 cairo_set_source_rgba (cr, 0.905, 0.917, 0.925, 0.2);
428 //user is currently pressing the button. black outline helps to indicate this
429 if ( _grabbed && !(_elements & (Inactive|Menu))) {
430 rounded_function (cr, 1, 1, get_width() - 2, get_height() - 2, _corner_radius);
431 cairo_set_line_width(cr, 2);
432 cairo_set_source_rgba (cr, 0.1, 0.1, 0.1, .5); // XXX no longer 'black'
436 //some buttons (like processor boxes) can be selected (so they can be deleted). Draw a selection indicator
437 if (visual_state() & Gtkmm2ext::Selected) {
438 #if 0 // outline, edge + 1px outside
439 cairo_set_line_width(cr, 2);
440 cairo_set_source_rgba (cr, 1, 0, 0, 0.8);
441 #else // replace edge (if any)
442 cairo_set_line_width(cr, 1);
443 cairo_set_source_rgba (cr, 1, 0, 0, 0.8);
445 rounded_function (cr, 0.5, 0.5, get_width() - 1, get_height() - 1, _corner_radius);
449 //I guess this means we have keyboard focus. I don't think this works currently
451 //A: yes, it's keyboard focus and it does work when there's no editor window
452 // (the editor is always the first receiver for KeyDown).
453 // It's needed for eg. the engine-dialog at startup or after closing a sesion.
455 rounded_function (cr, 1.5, 1.5, get_width() - 3, get_height() - 3, _corner_radius);
456 cairo_set_source_rgba (cr, 0.905, 0.917, 0.925, 0.8);
458 cairo_set_dash (cr, &dashes, 1, 0);
459 cairo_set_line_cap (cr, CAIRO_LINE_CAP_BUTT);
460 cairo_set_line_width (cr, 1.0);
462 cairo_set_dash (cr, 0, 0, 0);
467 ArdourButton::set_diameter (float d)
469 _diameter = (d*2) + 5.0;
471 if (_diameter != 0.0) {
472 _fixed_diameter = true;
480 ArdourButton::set_corner_radius (float r)
487 ArdourButton::on_size_request (Gtk::Requisition* req)
492 CairoWidget::on_size_request (req);
494 if ((_elements & Text) && !_text.empty()) {
496 //calc our real width for our string (but ignore the height, because that results in inconsistent button heights)
498 _layout->get_pixel_size (_text_width, ignored);
499 _text_height = char_pixel_height ();
501 if (_text_width + _diameter < 75) {
515 if ((_elements & Indicator) && _fixed_diameter) {
517 req->width = _pixbuf->get_width() + lrint (_diameter) + xpad;
518 req->height = max (_pixbuf->get_height(), (int) lrint (_diameter)) + ypad;
520 req->width = _text_width + lrint (_diameter) + xpad * 2; // margin left+right * 2
521 req->height = max (_text_height, (int) lrint (_diameter)) + ypad;
525 req->width = _pixbuf->get_width() + xpad;
526 req->height = _pixbuf->get_height() + ypad;
528 req->width = _text_width + xpad;
529 req->height = _text_height + ypad;
533 if ((_elements & Menu)) {
534 req->width += _diameter + 4;
536 req->width += _corner_radius;
540 * This sets the colors used for rendering based on the name of the button, and
541 * thus uses information from the GUI config data.
544 ArdourButton::set_colors ()
546 if (_fixed_colors_set) {
549 std::string name = get_name();
551 fill_active_color = ARDOUR_UI::config()->color_by_name (string_compose ("%1: fill active", name));
552 fill_inactive_color = ARDOUR_UI::config()->color_by_name (string_compose ("%1: fill", name));
554 text_active_color = ARDOUR_UI::config()->color_by_name (string_compose ("%1: text active", name));
555 text_inactive_color = ARDOUR_UI::config()->color_by_name (string_compose ("%1: text", name));
557 led_active_color = ARDOUR_UI::config()->color_by_name (string_compose ("%1: led active", name));
558 led_inactive_color = ARDOUR_UI::config()->color_by_name (string_compose ("%1: led", name));
561 * This sets the colors used for rendering based on two fixed values, rather
562 * than basing them on the button name, and thus information in the GUI config
565 void ArdourButton::set_fixed_colors (const uint32_t color_active, const uint32_t color_inactive)
567 _fixed_colors_set = true;
569 fill_active_color = color_active;
570 fill_inactive_color = color_inactive;
572 unsigned char r, g, b, a;
573 UINT_TO_RGBA(color_active, &r, &g, &b, &a);
575 double white_contrast = (max (double(r), 255.) - min (double(r), 255.)) +
576 (max (double(g), 255.) - min (double(g), 255.)) +
577 (max (double(b), 255.) - min (double(b), 255.));
579 double black_contrast = (max (double(r), 0.) - min (double(r), 0.)) +
580 (max (double(g), 0.) - min (double(g), 0.)) +
581 (max (double(b), 0.) - min (double(b), 0.));
583 text_active_color = (white_contrast > black_contrast) ?
584 RGBA_TO_UINT(255, 255, 255, 255) : /* use white */
585 RGBA_TO_UINT( 0, 0, 0, 255); /* use black */
588 UINT_TO_RGBA(color_inactive, &r, &g, &b, &a);
590 white_contrast = (max (double(r), 255.) - min (double(r), 255.)) +
591 (max (double(g), 255.) - min (double(g), 255.)) +
592 (max (double(b), 255.) - min (double(b), 255.));
594 black_contrast = (max (double(r), 0.) - min (double(r), 0.)) +
595 (max (double(g), 0.) - min (double(g), 0.)) +
596 (max (double(b), 0.) - min (double(b), 0.));
598 text_inactive_color = (white_contrast > black_contrast) ?
599 RGBA_TO_UINT(255, 255, 255, 255) : /* use white */
600 RGBA_TO_UINT( 0, 0, 0, 255); /* use black */
602 /* XXX what about led colors ? */
605 set_name (""); /* this will trigger a "style-changed" message and then set_colors() */
609 ArdourButton::build_patterns ()
611 if (convex_pattern) {
612 cairo_pattern_destroy (convex_pattern);
616 if (concave_pattern) {
617 cairo_pattern_destroy (concave_pattern);
621 if (led_inset_pattern) {
622 cairo_pattern_destroy (led_inset_pattern);
626 convex_pattern = cairo_pattern_create_linear (0.0, 0, 0.0, get_height());
627 cairo_pattern_add_color_stop_rgba (convex_pattern, 0.0, 0,0,0, 0.0);
628 cairo_pattern_add_color_stop_rgba (convex_pattern, 1.0, 0,0,0, 0.35);
631 concave_pattern = cairo_pattern_create_linear (0.0, 0, 0.0, get_height());
632 cairo_pattern_add_color_stop_rgba (concave_pattern, 0.0, 0,0,0, 0.5);
633 cairo_pattern_add_color_stop_rgba (concave_pattern, 0.7, 0,0,0, 0.0);
635 if (_elements & Indicator) {
636 led_inset_pattern = cairo_pattern_create_linear (0.0, 0.0, 0.0, _diameter);
637 cairo_pattern_add_color_stop_rgba (led_inset_pattern, 0, 0,0,0, 0.4);
638 cairo_pattern_add_color_stop_rgba (led_inset_pattern, 1, 1,1,1, 0.7);
645 ArdourButton::set_led_left (bool yn)
651 ArdourButton::on_button_press_event (GdkEventButton *ev)
653 if ((_elements & Indicator) && _led_rect && _distinct_led_click) {
654 if (ev->x >= _led_rect->x && ev->x < _led_rect->x + _led_rect->width &&
655 ev->y >= _led_rect->y && ev->y < _led_rect->y + _led_rect->height) {
660 if (binding_proxy.button_press_handler (ev)) {
667 if (!_act_on_release) {
669 _action->activate ();
674 if (_fallthrough_to_parent)
681 ArdourButton::on_button_release_event (GdkEventButton *ev)
683 if (_hovering && (_elements & Indicator) && _led_rect && _distinct_led_click) {
684 if (ev->x >= _led_rect->x && ev->x < _led_rect->x + _led_rect->width &&
685 ev->y >= _led_rect->y && ev->y < _led_rect->y + _led_rect->height) {
686 signal_led_clicked(); /* EMIT SIGNAL */
696 if (_act_on_release) {
698 _action->activate ();
704 if (_fallthrough_to_parent)
711 ArdourButton::set_distinct_led_click (bool yn)
713 _distinct_led_click = yn;
718 ArdourButton::color_handler ()
726 ArdourButton::on_size_allocate (Allocation& alloc)
728 CairoWidget::on_size_allocate (alloc);
734 ArdourButton::set_controllable (boost::shared_ptr<Controllable> c)
736 watch_connection.disconnect ();
737 binding_proxy.set_controllable (c);
741 ArdourButton::watch ()
743 boost::shared_ptr<Controllable> c (binding_proxy.get_controllable ());
746 warning << _("button cannot watch state of non-existing Controllable\n") << endmsg;
750 c->Changed.connect (watch_connection, invalidator(*this), boost::bind (&ArdourButton::controllable_changed, this), gui_context());
754 ArdourButton::controllable_changed ()
756 float val = binding_proxy.get_controllable()->get_value();
758 if (fabs (val) >= 0.5f) {
759 set_active_state (Gtkmm2ext::ExplicitActive);
761 unset_active_state ();
766 ArdourButton::set_related_action (RefPtr<Action> act)
768 Gtkmm2ext::Activatable::set_related_action (act);
772 action_tooltip_changed ();
774 Glib::RefPtr<ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic (_action);
777 tact->signal_toggled().connect (sigc::mem_fun (*this, &ArdourButton::action_toggled));
780 _action->connect_property_changed ("sensitive", sigc::mem_fun (*this, &ArdourButton::action_sensitivity_changed));
781 _action->connect_property_changed ("visible", sigc::mem_fun (*this, &ArdourButton::action_visibility_changed));
782 _action->connect_property_changed ("tooltip", sigc::mem_fun (*this, &ArdourButton::action_tooltip_changed));
787 ArdourButton::action_toggled ()
789 Glib::RefPtr<ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic (_action);
792 if (tact->get_active()) {
793 set_active_state (Gtkmm2ext::ExplicitActive);
795 unset_active_state ();
801 ArdourButton::on_style_changed (const RefPtr<Gtk::Style>&)
807 ArdourButton::on_name_changed ()
809 _char_pixel_width = 0;
810 _char_pixel_height = 0;
816 ArdourButton::setup_led_rect ()
820 if (get_width() < 75) {
826 if (_elements & Indicator) {
827 _led_rect = new cairo_rectangle_t;
829 if (_elements & Text) {
831 _led_rect->x = text_margin;
833 _led_rect->x = get_width() - text_margin - _diameter/2.0;
837 _led_rect->x = get_width()/2.0 - _diameter/2.0;
840 _led_rect->y = get_height()/2.0 - _diameter/2.0;
841 _led_rect->width = _diameter;
842 _led_rect->height = _diameter;
851 ArdourButton::set_image (const RefPtr<Gdk::Pixbuf>& img)
858 ArdourButton::set_active_state (Gtkmm2ext::ActiveState s)
860 bool changed = (_active_state != s);
861 CairoWidget::set_active_state (s);
869 ArdourButton::set_visual_state (Gtkmm2ext::VisualState s)
871 bool changed = (_visual_state != s);
872 CairoWidget::set_visual_state (s);
881 ArdourButton::on_focus_in_event (GdkEventFocus* ev)
885 return CairoWidget::on_focus_in_event (ev);
889 ArdourButton::on_focus_out_event (GdkEventFocus* ev)
893 return CairoWidget::on_focus_out_event (ev);
897 ArdourButton::on_key_release_event (GdkEventKey *ev) {
899 (ev->keyval == GDK_KEY_space || ev->keyval == GDK_Return))
903 _action->activate ();
907 return CairoWidget::on_key_release_event (ev);
911 ArdourButton::on_enter_notify_event (GdkEventCrossing* ev)
913 _hovering = (_elements & Inactive) ? false : true;
915 if (ARDOUR::Config->get_widget_prelight()) {
919 return CairoWidget::on_enter_notify_event (ev);
923 ArdourButton::on_leave_notify_event (GdkEventCrossing* ev)
927 if (ARDOUR::Config->get_widget_prelight()) {
931 return CairoWidget::on_leave_notify_event (ev);
935 ArdourButton::set_tweaks (Tweaks t)
944 ArdourButton::action_sensitivity_changed ()
946 if (_action->property_sensitive ()) {
947 set_visual_state (Gtkmm2ext::VisualState (visual_state() & ~Gtkmm2ext::Insensitive));
949 set_visual_state (Gtkmm2ext::VisualState (visual_state() | Gtkmm2ext::Insensitive));
955 ArdourButton::recalc_char_pixel_geometry ()
957 if (_char_pixel_height > 0 && _char_pixel_width > 0) {
961 _layout = Pango::Layout::create (get_pango_context());
963 // NB. this is not static, since the geometry is different
964 // depending on the font used.
966 std::string t = _layout->get_text();
967 std::string x = _("ABCDEFGHIJLKMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789");
968 _layout->set_text (x);
969 _layout->get_pixel_size (w, h);
970 _layout->set_text (t);
971 _char_pixel_height = std::max(4, h);
972 // number of actual chars in the string (not bytes)
973 // Glib to the rescue.
975 _char_pixel_width = std::max(4, w / (int)gx.size());
979 ArdourButton::action_visibility_changed ()
981 if (_action->property_visible ()) {
989 ArdourButton::action_tooltip_changed ()
991 string str = _action->property_tooltip().get_value();
992 ARDOUR_UI::instance()->set_tip (*this, str);
996 ArdourButton::set_elements (Element e)
1002 ArdourButton::add_elements (Element e)
1004 _elements = (ArdourButton::Element) (_elements | e);