1 /*
2 * Copyright (C) 2010 Paul Davis <paul@linuxaudiosystems.com>
3 * Copyright (C) 2017-2018 Robin Gareus <robin@gareus.org>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18 */
19
20 #include <iostream>
21 #include <cmath>
22 #include <algorithm>
23
24 #include <pangomm/layout.h>
25 #include <gtkmm/toggleaction.h>
26
27 #include "pbd/compose.h"
28 #include "pbd/controllable.h"
29 #include "pbd/error.h"
30
31 #include "gtkmm2ext/colors.h"
32 #include "gtkmm2ext/gui_thread.h"
33 #include "gtkmm2ext/rgb_macros.h"
34 #include "gtkmm2ext/utils.h"
35
36 #include "widgets/ardour_button.h"
37 #include "widgets/tooltips.h"
38 #include "widgets/ui_config.h"
39
40 #include "pbd/i18n.h"
41
42 #define BASELINESTRETCH (1.25)
43 #define TRACKHEADERBTNW (3.10)
44
45 using namespace Gtk;
46 using namespace Glib;
47 using namespace PBD;
48 using namespace ArdourWidgets;
49 using std::max;
50 using std::min;
51 using namespace std;
52
53 ArdourButton::Element ArdourButton::default_elements = ArdourButton::Element (ArdourButton::Edge|ArdourButton::Body|ArdourButton::Text);
54 ArdourButton::Element ArdourButton::led_default_elements = ArdourButton::Element (ArdourButton::default_elements|ArdourButton::Indicator);
55 ArdourButton::Element ArdourButton::just_led_default_elements = ArdourButton::Element (ArdourButton::Edge|ArdourButton::Body|ArdourButton::Indicator);
56
ArdourButton(Element e,bool toggle)57 ArdourButton::ArdourButton (Element e, bool toggle)
58 : _sizing_text("")
59 , _markup (false)
60 , _elements (e)
61 , _icon (ArdourIcon::NoIcon)
62 , _icon_render_cb (0)
63 , _icon_render_cb_data (0)
64 , _tweaks (Tweaks (0))
65 , _char_pixel_width (0)
66 , _char_pixel_height (0)
67 , _char_avg_pixel_width (0)
68 , _custom_font_set (false)
69 , _text_width (0)
70 , _text_height (0)
71 , _diameter (0)
72 , _corner_radius (3.5)
73 , _corner_mask (0xf)
74 , _angle(0)
75 , _xalign(.5)
76 , _yalign(.5)
77 , fill_inactive_color (0)
78 , fill_active_color (0)
79 , text_active_color(0)
80 , text_inactive_color(0)
81 , led_active_color(0)
82 , led_inactive_color(0)
83 , led_custom_color (0)
84 , use_custom_led_color (false)
85 , convex_pattern (0)
86 , concave_pattern (0)
87 , led_inset_pattern (0)
88 , _led_rect (0)
89 , _act_on_release (true)
90 , _auto_toggle (toggle)
91 , _led_left (false)
92 , _distinct_led_click (false)
93 , _hovering (false)
94 , _focused (false)
95 , _fixed_colors_set (false)
96 , _fallthrough_to_parent (false)
97 , _layout_ellipsize_width (-1)
98 , _ellipsis (Pango::ELLIPSIZE_NONE)
99 , _update_colors (true)
100 , _pattern_height (0)
101 {
102 UIConfigurationBase::instance().ColorsChanged.connect (sigc::mem_fun (*this, &ArdourButton::color_handler));
103 /* This is not provided by gtkmm */
104 signal_grab_broken_event().connect (sigc::mem_fun (*this, &ArdourButton::on_grab_broken_event));
105 }
106
ArdourButton(const std::string & str,Element e,bool toggle)107 ArdourButton::ArdourButton (const std::string& str, Element e, bool toggle)
108 : _sizing_text("")
109 , _markup (false)
110 , _elements (e)
111 , _icon (ArdourIcon::NoIcon)
112 , _tweaks (Tweaks (0))
113 , _char_pixel_width (0)
114 , _char_pixel_height (0)
115 , _char_avg_pixel_width (0)
116 , _custom_font_set (false)
117 , _text_width (0)
118 , _text_height (0)
119 , _diameter (0)
120 , _corner_radius (3.5)
121 , _corner_mask (0xf)
122 , _angle(0)
123 , _xalign(.5)
124 , _yalign(.5)
125 , fill_inactive_color (0)
126 , fill_active_color (0)
127 , text_active_color(0)
128 , text_inactive_color(0)
129 , led_active_color(0)
130 , led_inactive_color(0)
131 , led_custom_color (0)
132 , use_custom_led_color (false)
133 , convex_pattern (0)
134 , concave_pattern (0)
135 , led_inset_pattern (0)
136 , _led_rect (0)
137 , _act_on_release (true)
138 , _auto_toggle (toggle)
139 , _led_left (false)
140 , _distinct_led_click (false)
141 , _hovering (false)
142 , _focused (false)
143 , _fixed_colors_set (false)
144 , _fallthrough_to_parent (false)
145 , _layout_ellipsize_width (-1)
146 , _ellipsis (Pango::ELLIPSIZE_NONE)
147 , _update_colors (true)
148 , _pattern_height (0)
149 {
150 set_text (str);
151 UIConfigurationBase::instance().ColorsChanged.connect (sigc::mem_fun (*this, &ArdourButton::color_handler));
152 UIConfigurationBase::instance().DPIReset.connect (sigc::mem_fun (*this, &ArdourButton::on_name_changed));
153 /* This is not provided by gtkmm */
154 signal_grab_broken_event().connect (sigc::mem_fun (*this, &ArdourButton::on_grab_broken_event));
155 }
156
~ArdourButton()157 ArdourButton::~ArdourButton()
158 {
159 delete _led_rect;
160
161 if (convex_pattern) {
162 cairo_pattern_destroy (convex_pattern);
163 }
164
165 if (concave_pattern) {
166 cairo_pattern_destroy (concave_pattern);
167 }
168
169 if (led_inset_pattern) {
170 cairo_pattern_destroy (led_inset_pattern);
171 }
172 }
173
174 void
set_layout_font(const Pango::FontDescription & fd)175 ArdourButton::set_layout_font (const Pango::FontDescription& fd)
176 {
177 ensure_layout ();
178 if (_layout) {
179 _layout->set_font_description (fd);
180 queue_resize ();
181 _char_pixel_width = 0;
182 _char_pixel_height = 0;
183 _custom_font_set = true;
184 }
185 }
186
187 void
set_text_internal()188 ArdourButton::set_text_internal () {
189 assert (_layout);
190 if (_markup) {
191 _layout->set_markup (_text);
192 } else {
193 _layout->set_text (_text);
194 }
195 }
196
197 void
set_text(const std::string & str,bool markup)198 ArdourButton::set_text (const std::string& str, bool markup)
199 {
200 if (!(_elements & Text)) {
201 return;
202 }
203 if (_text == str && _markup == markup) {
204 return;
205 }
206
207 _text = str;
208 _markup = markup;
209 if (!is_realized()) {
210 return;
211 }
212 ensure_layout ();
213 if (_layout && _layout->get_text() != _text) {
214 set_text_internal ();
215 /* on_size_request() will fill in _text_width/height
216 * so queue it even if _sizing_text != "" */
217 if (_sizing_text.empty ()) {
218 queue_resize ();
219 } else {
220 _layout->get_pixel_size (_text_width, _text_height);
221 CairoWidget::set_dirty ();
222 }
223 }
224 }
225
226 void
set_sizing_text(const std::string & str)227 ArdourButton::set_sizing_text (const std::string& str)
228 {
229 if (_sizing_text == str) {
230 return;
231 }
232 _sizing_text = str;
233 queue_resize ();
234 }
235
236 void
set_angle(const double angle)237 ArdourButton::set_angle (const double angle)
238 {
239 _angle = angle;
240 }
241
242 void
set_alignment(const float xa,const float ya)243 ArdourButton::set_alignment (const float xa, const float ya)
244 {
245 _xalign = xa;
246 _yalign = ya;
247 }
248
249
250 /* TODO make this a dedicated function elsewhere.
251 *
252 * Option 1:
253 * virtual ArdourButton::render_vector_icon()
254 * ArdourIconButton::render_vector_icon
255 *
256 * Option 2:
257 * ARDOUR_UI_UTILS::render_vector_icon()
258 */
259 void
render(Cairo::RefPtr<Cairo::Context> const & ctx,cairo_rectangle_t *)260 ArdourButton::render (Cairo::RefPtr<Cairo::Context> const& ctx, cairo_rectangle_t*)
261 {
262 cairo_t* cr = ctx->cobj();
263
264 uint32_t text_color;
265 uint32_t led_color;
266
267 const bool boxy = (_tweaks & ForceBoxy) | boxy_buttons ();
268 const bool flat = (_tweaks & ForceFlat) | flat_buttons ();
269
270 const float corner_radius = boxy ? 0 : std::max(2.f, _corner_radius * UIConfigurationBase::instance().get_ui_scale());
271
272 if (_update_colors) {
273 set_colors ();
274 }
275 if (get_height() != _pattern_height) {
276 build_patterns ();
277 }
278
279 if ( active_state() == Gtkmm2ext::ExplicitActive ) {
280 text_color = text_active_color;
281 led_color = led_active_color;
282 } else {
283 text_color = text_inactive_color;
284 led_color = led_inactive_color;
285 }
286
287 if (use_custom_led_color) {
288 led_color = led_custom_color;
289 }
290
291 void (*rounded_function)(cairo_t*, double, double, double, double, double);
292
293 switch (_corner_mask) {
294 case 0x1: /* upper left only */
295 rounded_function = Gtkmm2ext::rounded_top_left_rectangle;
296 break;
297 case 0x2: /* upper right only */
298 rounded_function = Gtkmm2ext::rounded_top_right_rectangle;
299 break;
300 case 0x3: /* upper only */
301 rounded_function = Gtkmm2ext::rounded_top_rectangle;
302 break;
303 /* should really have functions for lower right, lower left,
304 lower only, but for now, we don't
305 */
306 default:
307 rounded_function = Gtkmm2ext::rounded_rectangle;
308 }
309
310 // draw edge (filling a rect underneath, rather than stroking a border on top, allows the corners to be lighter-weight.
311 if ((_elements & (Body|Edge)) == (Body|Edge)) {
312 rounded_function (cr, 0, 0, get_width(), get_height(), corner_radius + 1.5);
313 cairo_set_source_rgba (cr, 0, 0, 0, 1);
314 cairo_fill(cr);
315 }
316
317 // background fill
318 if ((_elements & Body)==Body) {
319 rounded_function (cr, 1, 1, get_width() - 2, get_height() - 2, corner_radius);
320 if (active_state() == Gtkmm2ext::ImplicitActive && !((_elements & Indicator)==Indicator)) {
321 Gtkmm2ext::set_source_rgba (cr, fill_inactive_color);
322 cairo_fill (cr);
323 } else if ( (active_state() == Gtkmm2ext::ExplicitActive) && !((_elements & Indicator)==Indicator) ) {
324 //background color
325 Gtkmm2ext::set_source_rgba (cr, fill_active_color);
326 cairo_fill (cr);
327 } else { //inactive, or it has an indicator
328 //background color
329 Gtkmm2ext::set_source_rgba (cr, fill_inactive_color);
330 }
331 cairo_fill (cr);
332 }
333
334 // IMPLICIT ACTIVE: draw a border of the active color
335 if ((_elements & Body)==Body) {
336 if (active_state() == Gtkmm2ext::ImplicitActive && !((_elements & Indicator)==Indicator)) {
337 cairo_set_line_width (cr, 2.0);
338 rounded_function (cr, 2, 2, get_width() - 4, get_height() - 4, corner_radius-0.5);
339 Gtkmm2ext::set_source_rgba (cr, fill_active_color);
340 cairo_stroke (cr);
341 }
342 }
343
344 //show the "convex" or "concave" gradient
345 if (!flat && (_elements & Body)==Body) {
346 if ( active_state() == Gtkmm2ext::ExplicitActive && ( !((_elements & Indicator)==Indicator) || use_custom_led_color) ) {
347 //concave
348 cairo_set_source (cr, concave_pattern);
349 Gtkmm2ext::rounded_rectangle (cr, 1, 1, get_width() - 2, get_height() - 2, corner_radius);
350 cairo_fill (cr);
351 } else {
352 cairo_set_source (cr, convex_pattern);
353 Gtkmm2ext::rounded_rectangle (cr, 1, 1, get_width() - 2, get_height() - 2, corner_radius);
354 cairo_fill (cr);
355 }
356 }
357
358 const int text_margin = char_pixel_width();
359
360 //Pixbuf, if any
361 if (_pixbuf) {
362 double x = rint((get_width() - _pixbuf->get_width()) * .5);
363 const double y = rint((get_height() - _pixbuf->get_height()) * .5);
364 #if 0 // DEBUG style (print on hover)
365 if (_hovering || (_elements & Inactive)) {
366 printf("%s: p:%dx%d (%dx%d)\n",
367 get_name().c_str(),
368 _pixbuf->get_width(), _pixbuf->get_height(),
369 get_width(), get_height());
370 }
371 #endif
372 if (_elements & Menu) {
373 //if this is a DropDown with an icon, then we need to
374 //move the icon left slightly to accomomodate the arrow
375 x -= _diameter - 2;
376 }
377 cairo_rectangle (cr, x, y, _pixbuf->get_width(), _pixbuf->get_height());
378 gdk_cairo_set_source_pixbuf (cr, _pixbuf->gobj(), x, y);
379 cairo_fill (cr);
380 }
381 else /* VectorIcon, IconRenderCallback are exclusive to Pixbuf Icons */
382 if (_elements & (VectorIcon | IconRenderCallback)) {
383 int vw = get_width();
384 int vh = get_height();
385 cairo_save (cr);
386
387 if (_elements & Menu) {
388 vw -= _diameter + 4;
389 }
390 if (_elements & Indicator) {
391 vw -= _diameter + .5 * text_margin;
392 if (_led_left) {
393 cairo_translate (cr, _diameter + text_margin, 0);
394 }
395 }
396 if (_elements & Text) {
397 vw -= _text_width + text_margin;
398 }
399 if (_elements & VectorIcon) {
400 ArdourIcon::render (cr, _icon, vw, vh, active_state(), text_color);
401 } else {
402 rounded_function (cr, 0, 0, get_width(), get_height(), corner_radius + 1.5);
403 cairo_clip (cr);
404 _icon_render_cb (cr, vw, vh, text_color, _icon_render_cb_data);
405 }
406 cairo_restore (cr);
407 }
408
409 // Text, if any
410 if (!_pixbuf && ((_elements & Text)==Text) && !_text.empty()) {
411 assert(_layout);
412 #if 0 // DEBUG style (print on hover)
413 if (_hovering || (_elements & Inactive)) {
414 bool layout_font = true;
415 Pango::FontDescription fd = _layout->get_font_description();
416 if (fd.gobj() == NULL) {
417 layout_font = false;
418 fd = get_pango_context()->get_font_description();
419 }
420 printf("%s: f:%dx%d aw:%.3f bh:%.0f t:%dx%d (%dx%d) %s\"%s\"\n",
421 get_name().c_str(),
422 char_pixel_width(), char_pixel_height(), char_avg_pixel_width(),
423 ceil(char_pixel_height() * BASELINESTRETCH),
424 _text_width, _text_height,
425 get_width(), get_height(),
426 layout_font ? "L:" : "W:",
427 fd.to_string().c_str());
428 }
429 #endif
430
431 cairo_save (cr);
432 cairo_rectangle (cr, 2, 1, get_width() - 4, get_height() - 2);
433 cairo_clip(cr);
434
435 cairo_new_path (cr);
436 Gtkmm2ext::set_source_rgba (cr, text_color);
437 const double text_ypos = round ((get_height() - _text_height) * .5);
438
439 if (_elements & Menu) {
440 // always left align (dropdown)
441 cairo_move_to (cr, text_margin, text_ypos);
442 pango_cairo_show_layout (cr, _layout->gobj());
443 } else if ( (_elements & Indicator) == Indicator) {
444 // left/right align depending on LED position
445 if (_led_left) {
446 cairo_move_to (cr, round (text_margin + _diameter + .5 * char_pixel_width()), text_ypos);
447 } else {
448 cairo_move_to (cr, text_margin, text_ypos);
449 }
450 pango_cairo_show_layout (cr, _layout->gobj());
451 } else if (VectorIcon == (_elements & VectorIcon)) {
452 cairo_move_to (cr, get_width () - text_margin - _text_width, text_ypos);
453 pango_cairo_show_layout (cr, _layout->gobj());
454 } else {
455 /* centered text otherwise */
456 double ww, wh;
457 double xa, ya;
458 ww = get_width();
459 wh = get_height();
460
461 cairo_matrix_t m1;
462 cairo_get_matrix (cr, &m1);
463 cairo_matrix_t m2 = m1;
464 m2.x0 = 0;
465 m2.y0 = 0;
466 cairo_set_matrix (cr, &m2);
467
468 if (_angle) {
469 cairo_rotate(cr, _angle * M_PI / 180.0);
470 }
471
472 cairo_device_to_user(cr, &ww, &wh);
473 xa = text_margin + (ww - _text_width - 2 * text_margin) * _xalign;
474 ya = (wh - _text_height) * _yalign;
475
476 /* quick hack for left/bottom alignment at -90deg
477 * TODO this should be generalized incl rotation.
478 * currently only 'user' of this API is meter_strip.cc
479 */
480 if (_xalign < 0) xa = ceil(.5 + (ww * fabs(_xalign) + text_margin));
481
482 cairo_move_to (cr, round (xa + m1.x0), round (ya + m1.y0));
483 pango_cairo_update_layout(cr, _layout->gobj());
484 pango_cairo_show_layout (cr, _layout->gobj());
485 }
486 cairo_restore (cr);
487 }
488
489 //Menu "triangle"
490 if (_elements & Menu) {
491 const float trih = ceil(_diameter * .5);
492 const float triw2 = ceil(.577 * _diameter * .5); // 1/sqrt(3) Equilateral triangle
493 //menu arrow
494 cairo_set_source_rgba (cr, 1, 1, 1, 0.4);
495 cairo_move_to(cr, get_width() - triw2 - 3. , rint((get_height() + trih) * .5));
496 cairo_rel_line_to(cr, -triw2, -trih);
497 cairo_rel_line_to(cr, 2. * triw2, 0);
498 cairo_close_path(cr);
499
500 cairo_set_source_rgba (cr, 1, 1, 1, 0.4);
501 cairo_fill(cr);
502
503 cairo_move_to(cr, get_width() - triw2 - 3 , rint((get_height() + trih) * .5));
504 cairo_rel_line_to(cr, .5 - triw2, .5 - trih);
505 cairo_rel_line_to(cr, 2. * triw2 - 1, 0);
506 cairo_close_path(cr);
507 cairo_set_source_rgba (cr, 0, 0, 0, 0.8);
508 cairo_set_line_width(cr, 1);
509 cairo_stroke(cr);
510 }
511
512 //Indicator LED
513 if (_elements & Indicator) {
514 cairo_save (cr);
515
516 /* move to the center of the indicator/led */
517 if (_elements & (Text | VectorIcon | IconRenderCallback)) {
518 int led_xoff = ceil((char_pixel_width() + _diameter) * .5);
519 if (_led_left) {
520 cairo_translate (cr, led_xoff, get_height() * .5);
521 } else {
522 cairo_translate (cr, get_width() - led_xoff, get_height() * .5);
523 }
524 } else {
525 cairo_translate (cr, get_width() * .5, get_height() * .5);
526 }
527
528 //inset
529 if (!flat) {
530 cairo_arc (cr, 0, 0, _diameter * .5, 0, 2 * M_PI);
531 cairo_set_source (cr, led_inset_pattern);
532 cairo_fill (cr);
533 }
534
535 //black ring
536 cairo_set_source_rgb (cr, 0, 0, 0);
537 cairo_arc (cr, 0, 0, _diameter * .5 - 1 * UIConfigurationBase::instance().get_ui_scale(), 0, 2 * M_PI);
538 cairo_fill(cr);
539
540 //led color
541 Gtkmm2ext::set_source_rgba (cr, led_color);
542 cairo_arc (cr, 0, 0, _diameter * .5 - 3 * UIConfigurationBase::instance().get_ui_scale(), 0, 2 * M_PI);
543 cairo_fill(cr);
544
545 cairo_restore (cr);
546 }
547
548 // a transparent overlay to indicate insensitivity
549 if ((visual_state() & Gtkmm2ext::Insensitive)) {
550 rounded_function (cr, 1, 1, get_width() - 2, get_height() - 2, corner_radius);
551 uint32_t ins_color = UIConfigurationBase::instance().color ("gtk_background");
552 Gtkmm2ext::set_source_rgb_a (cr, ins_color, 0.6);
553 cairo_fill (cr);
554 }
555
556 // if requested, show hovering
557 if (UIConfigurationBase::instance().get_widget_prelight()
558 && !((visual_state() & Gtkmm2ext::Insensitive))) {
559 if (_hovering) {
560 rounded_function (cr, 1, 1, get_width() - 2, get_height() - 2, corner_radius);
561 cairo_set_source_rgba (cr, 0.905, 0.917, 0.925, 0.2);
562 cairo_fill (cr);
563 }
564 }
565
566 //user is currently pressing the button. dark outline helps to indicate this
567 if (_grabbed && !(_elements & (Inactive|Menu))) {
568 rounded_function (cr, 1, 1, get_width() - 2, get_height() - 2, corner_radius);
569 cairo_set_line_width(cr, 2);
570 cairo_set_source_rgba (cr, 0.1, 0.1, 0.1, .5);
571 cairo_stroke (cr);
572 }
573
574 //some buttons (like processor boxes) can be selected (so they can be deleted). Draw a selection indicator
575 if (visual_state() & Gtkmm2ext::Selected) {
576 cairo_set_line_width(cr, 1);
577 cairo_set_source_rgba (cr, 1, 0, 0, 0.8);
578 rounded_function (cr, 0.5, 0.5, get_width() - 1, get_height() - 1, corner_radius);
579 cairo_stroke (cr);
580 }
581
582 //I guess this means we have keyboard focus. I don't think this works currently
583 //
584 //A: yes, it's keyboard focus and it does work when there's no editor window
585 // (the editor is always the first receiver for KeyDown).
586 // It's needed for eg. the engine-dialog at startup or after closing a sesion.
587 if (_focused) {
588 rounded_function (cr, 1.5, 1.5, get_width() - 3, get_height() - 3, corner_radius);
589 cairo_set_source_rgba (cr, 0.905, 0.917, 0.925, 0.8);
590 double dashes = 1;
591 cairo_set_dash (cr, &dashes, 1, 0);
592 cairo_set_line_cap (cr, CAIRO_LINE_CAP_BUTT);
593 cairo_set_line_width (cr, 1.0);
594 cairo_stroke (cr);
595 cairo_set_dash (cr, 0, 0, 0);
596 }
597 }
598
599 void
set_corner_radius(float r)600 ArdourButton::set_corner_radius (float r)
601 {
602 _corner_radius = r;
603 CairoWidget::set_dirty ();
604 }
605
606 void
on_realize()607 ArdourButton::on_realize()
608 {
609 CairoWidget::on_realize ();
610 ensure_layout ();
611 if (_layout) {
612 if (_layout->get_text() != _text) {
613 set_text_internal ();
614 queue_resize ();
615 }
616 }
617 }
618
619 void
on_size_request(Gtk::Requisition * req)620 ArdourButton::on_size_request (Gtk::Requisition* req)
621 {
622 req->width = req->height = 0;
623 CairoWidget::on_size_request (req);
624
625 if (_diameter == 0) {
626 const float newdia = rintf (11.f * UIConfigurationBase::instance().get_ui_scale());
627 if (_diameter != newdia) {
628 _pattern_height = 0;
629 _diameter = newdia;
630 }
631 }
632
633 if (_elements & Text) {
634
635 ensure_layout();
636 set_text_internal ();
637
638 /* render() needs the size of the displayed text */
639 _layout->get_pixel_size (_text_width, _text_height);
640
641 if (_tweaks & OccasionalText) {
642
643 /* size should not change based on presence or absence
644 * of text.
645 */
646
647 } else if (_layout_ellipsize_width > 0 && _sizing_text.empty()) {
648
649 req->height = std::max(req->height, (int) ceil(char_pixel_height() * BASELINESTRETCH + 1.0));
650 req->width += _layout_ellipsize_width / PANGO_SCALE;
651
652 } else /*if (!_text.empty() || !_sizing_text.empty()) */ {
653
654 req->height = std::max(req->height, (int) ceil(char_pixel_height() * BASELINESTRETCH + 1.0));
655 req->width += rint(1.75 * char_pixel_width()); // padding
656
657 if (!_sizing_text.empty()) {
658 _layout->set_text (_sizing_text); /* use sizing text */
659 }
660
661 int sizing_text_width = 0, sizing_text_height = 0;
662 _layout->get_pixel_size (sizing_text_width, sizing_text_height);
663
664 req->width += sizing_text_width;
665
666 if (!_sizing_text.empty()) {
667 set_text_internal (); /* restore display text */
668 }
669 }
670
671 /* XXX hack (surprise). Deal with two common rotation angles */
672
673 if (_angle == 90 || _angle == 270) {
674 /* do not swap text width or height because we rely on
675 these being the un-rotated values in ::render()
676 */
677 swap (req->width, req->height);
678 }
679
680 } else {
681 _text_width = 0;
682 _text_height = 0;
683 }
684
685 if (_pixbuf) {
686 req->width += _pixbuf->get_width() + char_pixel_width();
687 req->height = std::max(req->height, _pixbuf->get_height() + 4);
688 }
689
690 if ((_elements & Indicator) || (_tweaks & OccasionalLED)) {
691 req->width += ceil (_diameter + char_pixel_width());
692 req->height = std::max (req->height, (int) lrint (_diameter) + 4);
693 }
694
695 if ((_elements & Menu)) {
696 req->width += _diameter + 4;
697 }
698
699 if (_elements & (VectorIcon | IconRenderCallback)) {
700 const int wh = std::max (8., std::max (ceil (TRACKHEADERBTNW * char_avg_pixel_width()), ceil (char_pixel_height() * BASELINESTRETCH + 1.)));
701 req->width += wh;
702 req->height = std::max(req->height, wh);
703 }
704
705 /* Tweaks to mess the nice stuff above up again. */
706 if (_tweaks & TrackHeader) {
707 // forget everything above and just use a fixed square [em] size
708 // "TrackHeader Buttons" are single letter (usually uppercase)
709 // a SizeGroup is much less efficient (lots of gtk work under the hood for each track)
710 const int wh = std::max (rint (TRACKHEADERBTNW * char_avg_pixel_width()), ceil (char_pixel_height() * BASELINESTRETCH + 1.));
711 req->width = wh;
712 req->height = wh;
713 }
714 else if (_tweaks & Square) {
715 // currerntly unused (again)
716 if (req->width < req->height)
717 req->width = req->height;
718 if (req->height < req->width)
719 req->height = req->width;
720 } else if (_sizing_text.empty() && _text_width > 0 && !(_elements & Menu)) {
721 // properly centered text for those elements that are centered
722 // (no sub-pixel offset)
723 if ((req->width - _text_width) & 1) { ++req->width; }
724 if ((req->height - _text_height) & 1) { ++req->height; }
725 }
726 #if 0
727 printf("REQ: %s: %dx%d\n", get_name().c_str(), req->width, req->height);
728 #endif
729 }
730
731 /**
732 * This sets the colors used for rendering based on the name of the button, and
733 * thus uses information from the GUI config data.
734 */
735 void
set_colors()736 ArdourButton::set_colors ()
737 {
738 _update_colors = false;
739
740 if (_fixed_colors_set == 0x3) {
741 return;
742 }
743
744 std::string name = get_name();
745 bool failed = false;
746
747 if (!(_fixed_colors_set & 0x1)) {
748 fill_active_color = UIConfigurationBase::instance().color (string_compose ("%1: fill active", name), &failed);
749 if (failed) {
750 fill_active_color = UIConfigurationBase::instance().color ("generic button: fill active");
751 }
752 }
753
754 if (!(_fixed_colors_set & 0x2)) {
755 fill_inactive_color = UIConfigurationBase::instance().color (string_compose ("%1: fill", name), &failed);
756 if (failed) {
757 fill_inactive_color = UIConfigurationBase::instance().color ("generic button: fill");
758 }
759 }
760
761 text_active_color = Gtkmm2ext::contrasting_text_color (fill_active_color);
762 text_inactive_color = Gtkmm2ext::contrasting_text_color (fill_inactive_color);
763
764 led_active_color = UIConfigurationBase::instance().color (string_compose ("%1: led active", name), &failed);
765 if (failed) {
766 led_active_color = UIConfigurationBase::instance().color ("generic button: led active");
767 }
768
769 /* The inactive color for the LED is just a fairly dark version of the
770 * active color.
771 */
772
773 Gtkmm2ext::HSV inactive (led_active_color);
774 inactive.v = 0.35;
775
776 led_inactive_color = inactive.color ();
777 }
778
779 /**
780 * This sets the colors used for rendering based on two fixed values, rather
781 * than basing them on the button name, and thus information in the GUI config
782 * data.
783 */
set_fixed_colors(const uint32_t color_active,const uint32_t color_inactive)784 void ArdourButton::set_fixed_colors (const uint32_t color_active, const uint32_t color_inactive)
785 {
786 set_active_color (color_active);
787 set_inactive_color (color_inactive);
788 }
789
set_active_color(const uint32_t color)790 void ArdourButton::set_active_color (const uint32_t color)
791 {
792 _fixed_colors_set |= 0x1;
793
794 fill_active_color = color;
795
796 unsigned char r, g, b, a;
797 UINT_TO_RGBA(color, &r, &g, &b, &a);
798
799 double white_contrast = (max (double(r), 255.) - min (double(r), 255.)) +
800 (max (double(g), 255.) - min (double(g), 255.)) +
801 (max (double(b), 255.) - min (double(b), 255.));
802
803 double black_contrast = (max (double(r), 0.) - min (double(r), 0.)) +
804 (max (double(g), 0.) - min (double(g), 0.)) +
805 (max (double(b), 0.) - min (double(b), 0.));
806
807 text_active_color = (white_contrast > black_contrast) ?
808 RGBA_TO_UINT(255, 255, 255, 255) : /* use white */
809 RGBA_TO_UINT( 0, 0, 0, 255); /* use black */
810
811 /* XXX what about led colors ? */
812 CairoWidget::set_dirty ();
813 }
814
set_inactive_color(const uint32_t color)815 void ArdourButton::set_inactive_color (const uint32_t color)
816 {
817 _fixed_colors_set |= 0x2;
818
819 fill_inactive_color = color;
820
821 unsigned char r, g, b, a;
822 UINT_TO_RGBA(color, &r, &g, &b, &a);
823
824 double white_contrast = (max (double(r), 255.) - min (double(r), 255.)) +
825 (max (double(g), 255.) - min (double(g), 255.)) +
826 (max (double(b), 255.) - min (double(b), 255.));
827
828 double black_contrast = (max (double(r), 0.) - min (double(r), 0.)) +
829 (max (double(g), 0.) - min (double(g), 0.)) +
830 (max (double(b), 0.) - min (double(b), 0.));
831
832 text_inactive_color = (white_contrast > black_contrast) ?
833 RGBA_TO_UINT(255, 255, 255, 255) : /* use white */
834 RGBA_TO_UINT( 0, 0, 0, 255); /* use black */
835
836 /* XXX what about led colors ? */
837 CairoWidget::set_dirty ();
838 }
839
reset_fixed_colors()840 void ArdourButton::reset_fixed_colors ()
841 {
842 if (_fixed_colors_set == 0) {
843 return;
844 }
845 _fixed_colors_set = 0;
846 _update_colors = true;
847 CairoWidget::set_dirty ();
848 }
849
850 void
build_patterns()851 ArdourButton::build_patterns ()
852 {
853 if (convex_pattern) {
854 cairo_pattern_destroy (convex_pattern);
855 convex_pattern = 0;
856 }
857
858 if (concave_pattern) {
859 cairo_pattern_destroy (concave_pattern);
860 concave_pattern = 0;
861 }
862
863 if (led_inset_pattern) {
864 cairo_pattern_destroy (led_inset_pattern);
865 led_inset_pattern = 0;
866 }
867
868 //convex gradient
869 convex_pattern = cairo_pattern_create_linear (0.0, 0, 0.0, get_height());
870 cairo_pattern_add_color_stop_rgba (convex_pattern, 0.0, 0,0,0, 0.0);
871 cairo_pattern_add_color_stop_rgba (convex_pattern, 1.0, 0,0,0, 0.35);
872
873 //concave gradient
874 concave_pattern = cairo_pattern_create_linear (0.0, 0, 0.0, get_height());
875 cairo_pattern_add_color_stop_rgba (concave_pattern, 0.0, 0,0,0, 0.5);
876 cairo_pattern_add_color_stop_rgba (concave_pattern, 0.7, 0,0,0, 0.0);
877
878 led_inset_pattern = cairo_pattern_create_linear (0.0, 0.0, 0.0, _diameter);
879 cairo_pattern_add_color_stop_rgba (led_inset_pattern, 0, 0,0,0, 0.4);
880 cairo_pattern_add_color_stop_rgba (led_inset_pattern, 1, 1,1,1, 0.7);
881
882 _pattern_height = get_height() ;
883 }
884
885 void
set_led_left(bool yn)886 ArdourButton::set_led_left (bool yn)
887 {
888 _led_left = yn;
889 }
890
891 bool
on_button_press_event(GdkEventButton * ev)892 ArdourButton::on_button_press_event (GdkEventButton *ev)
893 {
894 focus_handler (this);
895
896 if (ev->type == GDK_2BUTTON_PRESS || ev->type == GDK_3BUTTON_PRESS) {
897 return _fallthrough_to_parent ? false : true;
898 }
899
900 if (ev->button == 1 && (_elements & Indicator) && _led_rect && _distinct_led_click) {
901 if (ev->x >= _led_rect->x && ev->x < _led_rect->x + _led_rect->width &&
902 ev->y >= _led_rect->y && ev->y < _led_rect->y + _led_rect->height) {
903 return true;
904 }
905 }
906
907 if (binding_proxy.button_press_handler (ev)) {
908 return true;
909 }
910
911 _grabbed = true;
912 CairoWidget::set_dirty ();
913
914 if (ev->button == 1 && !_act_on_release) {
915 if (_action) {
916 _action->activate ();
917 return true;
918 } else if (_auto_toggle) {
919 set_active (!get_active ());
920 signal_clicked ();
921 return true;
922 }
923 }
924
925 return _fallthrough_to_parent ? false : true;
926 }
927
928 bool
on_button_release_event(GdkEventButton * ev)929 ArdourButton::on_button_release_event (GdkEventButton *ev)
930 {
931 if (ev->type == GDK_2BUTTON_PRESS || ev->type == GDK_3BUTTON_PRESS) {
932 return _fallthrough_to_parent ? false : true;
933 }
934 if (ev->button == 1 && _hovering && (_elements & Indicator) && _led_rect && _distinct_led_click) {
935 if (ev->x >= _led_rect->x && ev->x < _led_rect->x + _led_rect->width &&
936 ev->y >= _led_rect->y && ev->y < _led_rect->y + _led_rect->height) {
937 signal_led_clicked(ev); /* EMIT SIGNAL */
938 return true;
939 }
940 }
941
942 _grabbed = false;
943 CairoWidget::set_dirty ();
944
945 if (ev->button == 1 && _hovering) {
946 if (_act_on_release && _auto_toggle && !_action) {
947 set_active (!get_active ());
948 }
949 signal_clicked ();
950 if (_act_on_release) {
951 if (_action) {
952 _action->activate ();
953 return true;
954 }
955 }
956 }
957
958 return _fallthrough_to_parent ? false : true;
959 }
960
961 void
set_distinct_led_click(bool yn)962 ArdourButton::set_distinct_led_click (bool yn)
963 {
964 _distinct_led_click = yn;
965 setup_led_rect ();
966 }
967
968 void
color_handler()969 ArdourButton::color_handler ()
970 {
971 _update_colors = true;
972 CairoWidget::set_dirty ();
973 }
974
975 void
on_size_allocate(Allocation & alloc)976 ArdourButton::on_size_allocate (Allocation& alloc)
977 {
978 CairoWidget::on_size_allocate (alloc);
979 setup_led_rect ();
980 if (_layout) {
981 /* re-center text */
982 //_layout->get_pixel_size (_text_width, _text_height);
983 }
984 }
985
986 void
set_controllable(boost::shared_ptr<Controllable> c)987 ArdourButton::set_controllable (boost::shared_ptr<Controllable> c)
988 {
989 watch_connection.disconnect ();
990 binding_proxy.set_controllable (c);
991 }
992
993 void
watch()994 ArdourButton::watch ()
995 {
996 boost::shared_ptr<Controllable> c (binding_proxy.get_controllable ());
997
998 if (!c) {
999 warning << _("button cannot watch state of non-existing Controllable\n") << endmsg;
1000 return;
1001 }
1002 c->Changed.connect (watch_connection, invalidator(*this), boost::bind (&ArdourButton::controllable_changed, this), gui_context());
1003 }
1004
1005 void
controllable_changed()1006 ArdourButton::controllable_changed ()
1007 {
1008 float val = binding_proxy.get_controllable()->get_value();
1009
1010 if (fabs (val) >= 0.5f) {
1011 set_active_state (Gtkmm2ext::ExplicitActive);
1012 } else {
1013 unset_active_state ();
1014 }
1015 CairoWidget::set_dirty ();
1016 }
1017
1018 void
set_related_action(RefPtr<Action> act)1019 ArdourButton::set_related_action (RefPtr<Action> act)
1020 {
1021 Gtkmm2ext::Activatable::set_related_action (act);
1022
1023 if (_action) {
1024
1025 action_tooltip_changed ();
1026 action_sensitivity_changed ();
1027
1028 Glib::RefPtr<ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic (_action);
1029 if (tact) {
1030 action_toggled ();
1031 tact->signal_toggled().connect (sigc::mem_fun (*this, &ArdourButton::action_toggled));
1032 }
1033
1034 _action->connect_property_changed ("sensitive", sigc::mem_fun (*this, &ArdourButton::action_sensitivity_changed));
1035 _action->connect_property_changed ("visible", sigc::mem_fun (*this, &ArdourButton::action_visibility_changed));
1036 _action->connect_property_changed ("tooltip", sigc::mem_fun (*this, &ArdourButton::action_tooltip_changed));
1037 }
1038 }
1039
1040 void
action_toggled()1041 ArdourButton::action_toggled ()
1042 {
1043 Glib::RefPtr<ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic (_action);
1044
1045 if (tact) {
1046 if (tact->get_active()) {
1047 set_active_state (Gtkmm2ext::ExplicitActive);
1048 } else {
1049 unset_active_state ();
1050 }
1051 }
1052 }
1053
1054 void
on_style_changed(const RefPtr<Gtk::Style> & style)1055 ArdourButton::on_style_changed (const RefPtr<Gtk::Style>& style)
1056 {
1057 CairoWidget::on_style_changed (style);
1058 Glib::RefPtr<Gtk::Style> const& new_style = get_style();
1059
1060 CairoWidget::set_dirty ();
1061 _update_colors = true;
1062 _char_pixel_width = 0;
1063 _char_pixel_height = 0;
1064
1065 if (!_custom_font_set && _layout && _layout->get_font_description () != new_style->get_font ()) {
1066 _layout->set_font_description (new_style->get_font ());
1067 queue_resize ();
1068 } else if (is_realized()) {
1069 queue_resize ();
1070 }
1071 }
1072
1073 void
on_name_changed()1074 ArdourButton::on_name_changed ()
1075 {
1076 _char_pixel_width = 0;
1077 _char_pixel_height = 0;
1078 _diameter = 0;
1079 _update_colors = true;
1080 if (is_realized()) {
1081 queue_resize ();
1082 }
1083 }
1084
1085 void
setup_led_rect()1086 ArdourButton::setup_led_rect ()
1087 {
1088 if (!(_elements & Indicator)) {
1089 delete _led_rect;
1090 _led_rect = 0;
1091 return;
1092 }
1093
1094 if (!_led_rect) {
1095 _led_rect = new cairo_rectangle_t;
1096 }
1097
1098 if (_elements & Text) {
1099 if (_led_left) {
1100 _led_rect->x = char_pixel_width();
1101 } else {
1102 _led_rect->x = get_width() - char_pixel_width() + _diameter;
1103 }
1104 } else {
1105 /* centered */
1106 _led_rect->x = .5 * get_width() - _diameter;
1107 }
1108
1109 _led_rect->y = .5 * (get_height() - _diameter);
1110 _led_rect->width = _diameter;
1111 _led_rect->height = _diameter;
1112 }
1113
1114 void
set_image(const RefPtr<Gdk::Pixbuf> & img)1115 ArdourButton::set_image (const RefPtr<Gdk::Pixbuf>& img)
1116 {
1117 _elements = (ArdourButton::Element) (_elements & ~ArdourButton::Text);
1118 _pixbuf = img;
1119 if (is_realized()) {
1120 queue_resize ();
1121 }
1122 }
1123
1124 void
set_active_state(Gtkmm2ext::ActiveState s)1125 ArdourButton::set_active_state (Gtkmm2ext::ActiveState s)
1126 {
1127 bool changed = (_active_state != s);
1128 CairoWidget::set_active_state (s);
1129 if (changed) {
1130 _update_colors = true;
1131 CairoWidget::set_dirty ();
1132 }
1133 }
1134
1135 void
set_visual_state(Gtkmm2ext::VisualState s)1136 ArdourButton::set_visual_state (Gtkmm2ext::VisualState s)
1137 {
1138 bool changed = (_visual_state != s);
1139 CairoWidget::set_visual_state (s);
1140 if (changed) {
1141 _update_colors = true;
1142 CairoWidget::set_dirty ();
1143 }
1144 }
1145
1146 bool
on_focus_in_event(GdkEventFocus * ev)1147 ArdourButton::on_focus_in_event (GdkEventFocus* ev)
1148 {
1149 _focused = true;
1150 CairoWidget::set_dirty ();
1151 return CairoWidget::on_focus_in_event (ev);
1152 }
1153
1154 bool
on_focus_out_event(GdkEventFocus * ev)1155 ArdourButton::on_focus_out_event (GdkEventFocus* ev)
1156 {
1157 _focused = false;
1158 CairoWidget::set_dirty ();
1159 return CairoWidget::on_focus_out_event (ev);
1160 }
1161
1162 bool
on_key_release_event(GdkEventKey * ev)1163 ArdourButton::on_key_release_event (GdkEventKey *ev) {
1164 if (_act_on_release && _focused &&
1165 (ev->keyval == GDK_space || ev->keyval == GDK_Return))
1166 {
1167 if (_auto_toggle && !_action) {
1168 set_active (!get_active ());
1169 }
1170 signal_clicked();
1171 if (_action) {
1172 _action->activate ();
1173 }
1174 return true;
1175 }
1176 return CairoWidget::on_key_release_event (ev);
1177 }
1178
1179 bool
on_key_press_event(GdkEventKey * ev)1180 ArdourButton::on_key_press_event (GdkEventKey *ev) {
1181 if (!_act_on_release && _focused &&
1182 (ev->keyval == GDK_space || ev->keyval == GDK_Return))
1183 {
1184 if (_auto_toggle && !_action) {
1185 set_active (!get_active ());
1186 }
1187 signal_clicked();
1188 if (_action) {
1189 _action->activate ();
1190 }
1191 return true;
1192 }
1193 return CairoWidget::on_key_release_event (ev);
1194 }
1195
1196 bool
on_enter_notify_event(GdkEventCrossing * ev)1197 ArdourButton::on_enter_notify_event (GdkEventCrossing* ev)
1198 {
1199 _hovering = (_elements & Inactive) ? false : true;
1200
1201 if (UIConfigurationBase::instance().get_widget_prelight()) {
1202 CairoWidget::set_dirty ();
1203 }
1204
1205 boost::shared_ptr<PBD::Controllable> c (binding_proxy.get_controllable ());
1206 if (c) {
1207 PBD::Controllable::GUIFocusChanged (boost::weak_ptr<PBD::Controllable> (c));
1208 }
1209
1210 return CairoWidget::on_enter_notify_event (ev);
1211 }
1212
1213 bool
on_leave_notify_event(GdkEventCrossing * ev)1214 ArdourButton::on_leave_notify_event (GdkEventCrossing* ev)
1215 {
1216 _hovering = false;
1217
1218 if (UIConfigurationBase::instance().get_widget_prelight()) {
1219 CairoWidget::set_dirty ();
1220 }
1221
1222 if (binding_proxy.get_controllable()) {
1223 PBD::Controllable::GUIFocusChanged (boost::weak_ptr<PBD::Controllable> ());
1224 }
1225
1226 return CairoWidget::on_leave_notify_event (ev);
1227 }
1228
1229 bool
on_grab_broken_event(GdkEventGrabBroken * grab_broken_event)1230 ArdourButton::on_grab_broken_event(GdkEventGrabBroken* grab_broken_event) {
1231 /* Our implicit grab due to a button_press was broken by another grab:
1232 * the button will not get any button_release event if the mouse leaves
1233 * while the grab is taken, so unpress ourselves */
1234 _grabbed = false;
1235 CairoWidget::set_dirty ();
1236 return true;
1237 }
1238
1239 void
set_tweaks(Tweaks t)1240 ArdourButton::set_tweaks (Tweaks t)
1241 {
1242 if (_tweaks != t) {
1243 _tweaks = t;
1244 if (is_realized()) {
1245 queue_resize ();
1246 }
1247 }
1248 }
1249
1250 void
action_sensitivity_changed()1251 ArdourButton::action_sensitivity_changed ()
1252 {
1253 if (_action->property_sensitive ()) {
1254 set_visual_state (Gtkmm2ext::VisualState (visual_state() & ~Gtkmm2ext::Insensitive));
1255 } else {
1256 set_visual_state (Gtkmm2ext::VisualState (visual_state() | Gtkmm2ext::Insensitive));
1257 }
1258 }
1259
1260 void
set_layout_ellipsize_width(int w)1261 ArdourButton::set_layout_ellipsize_width (int w)
1262 {
1263 if (_layout_ellipsize_width == w) {
1264 return;
1265 }
1266 _layout_ellipsize_width = w;
1267 if (!_layout) {
1268 return;
1269 }
1270 if (_layout_ellipsize_width > 3 * PANGO_SCALE) {
1271 _layout->set_width (_layout_ellipsize_width - 3 * PANGO_SCALE);
1272 }
1273 if (is_realized ()) {
1274 queue_resize ();
1275 }
1276 }
1277
1278 void
set_text_ellipsize(Pango::EllipsizeMode e)1279 ArdourButton::set_text_ellipsize (Pango::EllipsizeMode e)
1280 {
1281 if (_ellipsis == e) {
1282 return;
1283 }
1284 _ellipsis = e;
1285 if (!_layout) {
1286 return;
1287 }
1288 _layout->set_ellipsize(_ellipsis);
1289 if (_layout_ellipsize_width > 3 * PANGO_SCALE) {
1290 _layout->set_width (_layout_ellipsize_width - 3 * PANGO_SCALE);
1291 }
1292 if (is_realized ()) {
1293 queue_resize ();
1294 }
1295 }
1296
1297 void
ensure_layout()1298 ArdourButton::ensure_layout ()
1299 {
1300 if (!_layout) {
1301 ensure_style ();
1302 _layout = Pango::Layout::create (get_pango_context());
1303 _layout->set_font_description (get_style()->get_font());
1304 _layout->set_ellipsize(_ellipsis);
1305 if (_layout_ellipsize_width > 3 * PANGO_SCALE) {
1306 _layout->set_width (_layout_ellipsize_width - 3* PANGO_SCALE);
1307 }
1308 }
1309 }
1310
1311 void
recalc_char_pixel_geometry()1312 ArdourButton::recalc_char_pixel_geometry ()
1313 {
1314 if (_char_pixel_height > 0 && _char_pixel_width > 0) {
1315 return;
1316 }
1317 ensure_layout();
1318 // NB. this is not static, since the geometry is different
1319 // depending on the font used.
1320 int w, h;
1321 std::string x = _("@ABCDEFGHIJLKMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789");
1322 _layout->set_text (x);
1323 _layout->get_pixel_size (w, h);
1324 _char_pixel_height = std::max(4, h);
1325 // number of actual chars in the string (not bytes)
1326 // Glib to the rescue.
1327 Glib::ustring gx(x);
1328 _char_avg_pixel_width = w / (float)gx.size();
1329 _char_pixel_width = std::max(4, (int) ceil (_char_avg_pixel_width));
1330 set_text_internal (); /* restore display text */
1331 }
1332
1333 void
action_visibility_changed()1334 ArdourButton::action_visibility_changed ()
1335 {
1336 if (_action->property_visible ()) {
1337 show ();
1338 } else {
1339 hide ();
1340 }
1341 }
1342
1343 void
action_tooltip_changed()1344 ArdourButton::action_tooltip_changed ()
1345 {
1346 string str = _action->property_tooltip().get_value();
1347 set_tooltip (*this, str);
1348 }
1349
1350 void
set_elements(Element e)1351 ArdourButton::set_elements (Element e)
1352 {
1353 _elements = e;
1354 CairoWidget::set_dirty ();
1355 }
1356
1357 void
add_elements(Element e)1358 ArdourButton::add_elements (Element e)
1359 {
1360 _elements = (ArdourButton::Element) (_elements | e);
1361 CairoWidget::set_dirty ();
1362 }
1363
1364 void
set_icon(ArdourIcon::Icon i)1365 ArdourButton::set_icon (ArdourIcon::Icon i)
1366 {
1367 _icon = i;
1368 _icon_render_cb = 0;
1369 _icon_render_cb_data = 0;
1370 _elements = (ArdourButton::Element) ((_elements | VectorIcon) & ~(ArdourButton::Text | IconRenderCallback));
1371 CairoWidget::set_dirty ();
1372 }
1373
1374 void
set_icon(rendercallback_t cb,void * d)1375 ArdourButton::set_icon (rendercallback_t cb, void* d)
1376 {
1377 if (!cb) {
1378 _elements = (ArdourButton::Element) ((_elements | ArdourButton::Text) & ~(IconRenderCallback | VectorIcon));
1379 _icon_render_cb = 0;
1380 _icon_render_cb_data = 0;
1381 } else {
1382 _elements = (ArdourButton::Element) ((_elements | IconRenderCallback) & ~(ArdourButton::Text | VectorIcon));
1383 _icon_render_cb = cb;
1384 _icon_render_cb_data = d;
1385 }
1386 CairoWidget::set_dirty ();
1387 }
1388
1389 void
set_custom_led_color(uint32_t c,bool useit)1390 ArdourButton::set_custom_led_color (uint32_t c, bool useit)
1391 {
1392 if (led_custom_color == c && use_custom_led_color == useit) {
1393 return;
1394 }
1395
1396 led_custom_color = c;
1397 use_custom_led_color = useit;
1398 CairoWidget::set_dirty ();
1399 }
1400