13
0
livetrax/gtk2_ardour/ardour_button.cc

1281 lines
33 KiB
C++

/*
Copyright (C) 2010 Paul Davis
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <iostream>
#include <cmath>
#include <algorithm>
#include <pangomm/layout.h>
#include "pbd/compose.h"
#include "pbd/controllable.h"
#include "pbd/error.h"
#include "pbd/stacktrace.h"
#include "gtkmm2ext/utils.h"
#include "gtkmm2ext/rgb_macros.h"
#include "gtkmm2ext/gui_thread.h"
#include "canvas/utils.h"
#include "canvas/colors.h"
#include "ardour_button.h"
#include "tooltips.h"
#include "ui_config.h"
#include "pbd/i18n.h"
#define BASELINESTRETCH (1.25)
#define TRACKHEADERBTNW (3.10)
using namespace Gdk;
using namespace Gtk;
using namespace Glib;
using namespace PBD;
using namespace ARDOUR_UI_UTILS;
using std::max;
using std::min;
using namespace std;
ArdourButton::Element ArdourButton::default_elements = ArdourButton::Element (ArdourButton::Edge|ArdourButton::Body|ArdourButton::Text);
ArdourButton::Element ArdourButton::led_default_elements = ArdourButton::Element (ArdourButton::default_elements|ArdourButton::Indicator);
ArdourButton::Element ArdourButton::just_led_default_elements = ArdourButton::Element (ArdourButton::Edge|ArdourButton::Body|ArdourButton::Indicator);
ArdourButton::ArdourButton (Element e)
: _sizing_text("")
, _markup (false)
, _elements (e)
, _icon (Gtkmm2ext::ArdourIcon::NoIcon)
, _tweaks (Tweaks (0))
, _char_pixel_width (0)
, _char_pixel_height (0)
, _char_avg_pixel_width (0)
, _text_width (0)
, _text_height (0)
, _diameter (0)
, _corner_radius (3.5)
, _corner_mask (0xf)
, _angle(0)
, _xalign(.5)
, _yalign(.5)
, fill_inactive_color (0)
, fill_active_color (0)
, text_active_color(0)
, text_inactive_color(0)
, led_active_color(0)
, led_inactive_color(0)
, led_custom_color (0)
, use_custom_led_color (false)
, convex_pattern (0)
, concave_pattern (0)
, led_inset_pattern (0)
, _led_rect (0)
, _act_on_release (true)
, _led_left (false)
, _distinct_led_click (false)
, _hovering (false)
, _focused (false)
, _fixed_colors_set (false)
, _fallthrough_to_parent (false)
, _layout_ellipsize_width (-1)
, _ellipsis (Pango::ELLIPSIZE_NONE)
, _update_colors (true)
, _pattern_height (0)
{
UIConfiguration::instance().ColorsChanged.connect (sigc::mem_fun (*this, &ArdourButton::color_handler));
/* This is not provided by gtkmm */
signal_grab_broken_event().connect (sigc::mem_fun (*this, &ArdourButton::on_grab_broken_event));
}
ArdourButton::ArdourButton (const std::string& str, Element e)
: _sizing_text("")
, _markup (false)
, _elements (e)
, _icon (Gtkmm2ext::ArdourIcon::NoIcon)
, _tweaks (Tweaks (0))
, _char_pixel_width (0)
, _char_pixel_height (0)
, _char_avg_pixel_width (0)
, _text_width (0)
, _text_height (0)
, _diameter (0)
, _corner_radius (3.5)
, _corner_mask (0xf)
, _angle(0)
, _xalign(.5)
, _yalign(.5)
, fill_inactive_color (0)
, fill_active_color (0)
, text_active_color(0)
, text_inactive_color(0)
, led_active_color(0)
, led_inactive_color(0)
, led_custom_color (0)
, use_custom_led_color (false)
, convex_pattern (0)
, concave_pattern (0)
, led_inset_pattern (0)
, _led_rect (0)
, _act_on_release (true)
, _led_left (false)
, _distinct_led_click (false)
, _hovering (false)
, _focused (false)
, _fixed_colors_set (false)
, _fallthrough_to_parent (false)
, _layout_ellipsize_width (-1)
, _ellipsis (Pango::ELLIPSIZE_NONE)
, _update_colors (true)
, _pattern_height (0)
{
set_text (str);
UIConfiguration::instance().ColorsChanged.connect (sigc::mem_fun (*this, &ArdourButton::color_handler));
UIConfiguration::instance().DPIReset.connect (sigc::mem_fun (*this, &ArdourButton::on_name_changed));
/* This is not provided by gtkmm */
signal_grab_broken_event().connect (sigc::mem_fun (*this, &ArdourButton::on_grab_broken_event));
}
ArdourButton::~ArdourButton()
{
delete _led_rect;
if (convex_pattern) {
cairo_pattern_destroy (convex_pattern);
}
if (concave_pattern) {
cairo_pattern_destroy (concave_pattern);
}
if (led_inset_pattern) {
cairo_pattern_destroy (led_inset_pattern);
}
}
void
ArdourButton::set_layout_font (const Pango::FontDescription& fd)
{
ensure_layout ();
if (_layout) {
_layout->set_font_description (fd);
queue_resize ();
_char_pixel_width = 0;
_char_pixel_height = 0;
}
}
void
ArdourButton::set_text_internal () {
assert (_layout);
if (_markup) {
_layout->set_markup (_text);
} else {
_layout->set_text (_text);
}
}
void
ArdourButton::set_text (const std::string& str, bool markup)
{
if (!(_elements & Text)) {
return;
}
if (_text == str && _markup == markup) {
return;
}
_text = str;
_markup = markup;
if (!is_realized()) {
return;
}
ensure_layout ();
if (_layout && _layout->get_text() != _text) {
set_text_internal ();
/* on_size_request() will fill in _text_width/height
* so queue it even if _sizing_text != "" */
queue_resize ();
}
}
void
ArdourButton::set_sizing_text (const std::string& str)
{
if (_sizing_text == str) {
return;
}
_sizing_text = str;
if (!is_realized()) {
return;
}
ensure_layout ();
if (_layout) {
queue_resize ();
}
}
void
ArdourButton::set_angle (const double angle)
{
_angle = angle;
}
void
ArdourButton::set_alignment (const float xa, const float ya)
{
_xalign = xa;
_yalign = ya;
}
/* TODO make this a dedicated function elsewhere.
*
* Option 1:
* virtual ArdourButton::render_vector_icon()
* ArdourIconButton::render_vector_icon
*
* Option 2:
* ARDOUR_UI_UTILS::render_vector_icon()
*/
void
ArdourButton::render (cairo_t* cr, cairo_rectangle_t *)
{
uint32_t text_color;
uint32_t led_color;
const float corner_radius = std::max(2.f, _corner_radius * UIConfiguration::instance().get_ui_scale());
if (_update_colors) {
set_colors ();
}
if (get_height() != _pattern_height) {
build_patterns ();
}
if ( active_state() == Gtkmm2ext::ExplicitActive ) {
text_color = text_active_color;
led_color = led_active_color;
} else {
text_color = text_inactive_color;
led_color = led_inactive_color;
}
if (use_custom_led_color) {
led_color = led_custom_color;
}
void (*rounded_function)(cairo_t*, double, double, double, double, double);
switch (_corner_mask) {
case 0x1: /* upper left only */
rounded_function = Gtkmm2ext::rounded_top_left_rectangle;
break;
case 0x2: /* upper right only */
rounded_function = Gtkmm2ext::rounded_top_right_rectangle;
break;
case 0x3: /* upper only */
rounded_function = Gtkmm2ext::rounded_top_rectangle;
break;
/* should really have functions for lower right, lower left,
lower only, but for now, we don't
*/
default:
rounded_function = Gtkmm2ext::rounded_rectangle;
}
// draw edge (filling a rect underneath, rather than stroking a border on top, allows the corners to be lighter-weight.
if ((_elements & (Body|Edge)) == (Body|Edge)) {
rounded_function (cr, 0, 0, get_width(), get_height(), corner_radius + 1.5);
cairo_set_source_rgba (cr, 0, 0, 0, 1);
cairo_fill(cr);
}
// background fill
if ((_elements & Body)==Body) {
rounded_function (cr, 1, 1, get_width() - 2, get_height() - 2, corner_radius);
if (active_state() == Gtkmm2ext::ImplicitActive && !((_elements & Indicator)==Indicator)) {
ArdourCanvas::set_source_rgba (cr, fill_inactive_color);
cairo_fill (cr);
} else if ( (active_state() == Gtkmm2ext::ExplicitActive) && !((_elements & Indicator)==Indicator) ) {
//background color
ArdourCanvas::set_source_rgba (cr, fill_active_color);
cairo_fill (cr);
} else { //inactive, or it has an indicator
//background color
ArdourCanvas::set_source_rgba (cr, fill_inactive_color);
}
cairo_fill (cr);
}
// IMPLICIT ACTIVE: draw a border of the active color
if ((_elements & Body)==Body) {
if (active_state() == Gtkmm2ext::ImplicitActive && !((_elements & Indicator)==Indicator)) {
cairo_set_line_width (cr, 2.0);
rounded_function (cr, 2, 2, get_width() - 4, get_height() - 4, corner_radius-0.5);
ArdourCanvas::set_source_rgba (cr, fill_active_color);
cairo_stroke (cr);
}
}
//show the "convex" or "concave" gradient
if (!_flat_buttons && (_elements & Body)==Body) {
if ( active_state() == Gtkmm2ext::ExplicitActive && ( !((_elements & Indicator)==Indicator) || use_custom_led_color) ) {
//concave
cairo_set_source (cr, concave_pattern);
Gtkmm2ext::rounded_rectangle (cr, 1, 1, get_width() - 2, get_height() - 2, corner_radius);
cairo_fill (cr);
} else {
cairo_set_source (cr, convex_pattern);
Gtkmm2ext::rounded_rectangle (cr, 1, 1, get_width() - 2, get_height() - 2, corner_radius);
cairo_fill (cr);
}
}
//Pixbuf, if any
if (_pixbuf) {
double x = rint((get_width() - _pixbuf->get_width()) * .5);
const double y = rint((get_height() - _pixbuf->get_height()) * .5);
#if 0 // DEBUG style (print on hover)
if (_hovering || (_elements & Inactive)) {
printf("%s: p:%dx%d (%dx%d)\n",
get_name().c_str(),
_pixbuf->get_width(), _pixbuf->get_height(),
get_width(), get_height());
}
#endif
if (_elements & Menu) {
//if this is a DropDown with an icon, then we need to
//move the icon left slightly to accomomodate the arrow
x -= _diameter - 2;
}
cairo_rectangle (cr, x, y, _pixbuf->get_width(), _pixbuf->get_height());
gdk_cairo_set_source_pixbuf (cr, _pixbuf->gobj(), x, y);
cairo_fill (cr);
}
else /* VectorIcons are exclusive to Pixbuf Icons */
if (_elements & VectorIcon) {
int vw = get_width();
int vh = get_height();
if (_elements & Menu) {
vw -= _diameter + 4;
}
Gtkmm2ext::ArdourIcon::render (cr, _icon, vw, vh, active_state(), text_color);
}
const int text_margin = char_pixel_width();
// Text, if any
if (!_pixbuf && ((_elements & Text)==Text) && !_text.empty()) {
assert(_layout);
#if 0 // DEBUG style (print on hover)
if (_hovering || (_elements & Inactive)) {
bool layout_font = true;
Pango::FontDescription fd = _layout->get_font_description();
if (fd.gobj() == NULL) {
layout_font = false;
fd = get_pango_context()->get_font_description();
}
printf("%s: f:%dx%d aw:%.3f bh:%.0f t:%dx%d (%dx%d) %s\"%s\"\n",
get_name().c_str(),
char_pixel_width(), char_pixel_height(), char_avg_pixel_width(),
ceil(char_pixel_height() * BASELINESTRETCH),
_text_width, _text_height,
get_width(), get_height(),
layout_font ? "L:" : "W:",
fd.to_string().c_str());
}
#endif
cairo_save (cr);
cairo_rectangle (cr, 2, 1, get_width() - 4, get_height() - 2);
cairo_clip(cr);
cairo_new_path (cr);
ArdourCanvas::set_source_rgba (cr, text_color);
const double text_ypos = (get_height() - _text_height) * .5;
if (_elements & Menu) {
// always left align (dropdown)
cairo_move_to (cr, text_margin, text_ypos);
pango_cairo_show_layout (cr, _layout->gobj());
} else if ( (_elements & Indicator) == Indicator) {
// left/right align depending on LED position
if (_led_left) {
cairo_move_to (cr, text_margin + _diameter + .5 * char_pixel_width(), text_ypos);
} else {
cairo_move_to (cr, text_margin, text_ypos);
}
pango_cairo_show_layout (cr, _layout->gobj());
} else {
/* centered text otherwise */
double ww, wh;
double xa, ya;
ww = get_width();
wh = get_height();
cairo_save (cr);
cairo_rotate(cr, _angle * M_PI / 180.0);
cairo_device_to_user(cr, &ww, &wh);
xa = text_margin + (ww - _text_width - 2 * text_margin) * _xalign;
ya = (wh - _text_height) * _yalign;
/* quick hack for left/bottom alignment at -90deg
* TODO this should be generalized incl rotation.
* currently only 'user' of this API is meter_strip.cc
*/
if (_xalign < 0) xa = ceil(.5 + (ww * fabs(_xalign) + text_margin));
cairo_move_to (cr, xa, ya);
pango_cairo_update_layout(cr, _layout->gobj());
pango_cairo_show_layout (cr, _layout->gobj());
cairo_restore (cr);
}
cairo_restore (cr);
}
//Menu "triangle"
if (_elements & Menu) {
const float trih = ceil(_diameter * .5);
const float triw2 = ceil(.577 * _diameter * .5); // 1/sqrt(3) Equilateral triangle
//menu arrow
cairo_set_source_rgba (cr, 1, 1, 1, 0.4);
cairo_move_to(cr, get_width() - triw2 - 3. , rint((get_height() + trih) * .5));
cairo_rel_line_to(cr, -triw2, -trih);
cairo_rel_line_to(cr, 2. * triw2, 0);
cairo_close_path(cr);
cairo_set_source_rgba (cr, 1, 1, 1, 0.4);
cairo_fill(cr);
cairo_move_to(cr, get_width() - triw2 - 3 , rint((get_height() + trih) * .5));
cairo_rel_line_to(cr, .5 - triw2, .5 - trih);
cairo_rel_line_to(cr, 2. * triw2 - 1, 0);
cairo_close_path(cr);
cairo_set_source_rgba (cr, 0, 0, 0, 0.8);
cairo_set_line_width(cr, 1);
cairo_stroke(cr);
}
//Indicator LED
if (_elements & Indicator) {
cairo_save (cr);
/* move to the center of the indicator/led */
if (_elements & Text) {
int led_xoff = ceil(char_pixel_width() + _diameter * .5);
if (_led_left) {
cairo_translate (cr, led_xoff, get_height() * .5);
} else {
cairo_translate (cr, get_width() - led_xoff, get_height() * .5);
}
} else {
cairo_translate (cr, get_width() * .5, get_height() * .5);
}
//inset
if (!_flat_buttons) {
cairo_arc (cr, 0, 0, _diameter * .5, 0, 2 * M_PI);
cairo_set_source (cr, led_inset_pattern);
cairo_fill (cr);
}
//black ring
cairo_set_source_rgb (cr, 0, 0, 0);
cairo_arc (cr, 0, 0, _diameter * .5 - 1 * UIConfiguration::instance().get_ui_scale(), 0, 2 * M_PI);
cairo_fill(cr);
//led color
ArdourCanvas::set_source_rgba (cr, led_color);
cairo_arc (cr, 0, 0, _diameter * .5 - 3 * UIConfiguration::instance().get_ui_scale(), 0, 2 * M_PI);
cairo_fill(cr);
cairo_restore (cr);
}
// a transparent overlay to indicate insensitivity
if ((visual_state() & Gtkmm2ext::Insensitive)) {
rounded_function (cr, 0, 0, get_width(), get_height(), corner_radius);
uint32_t ins_color = UIConfiguration::instance().color ("gtk_background");
ArdourCanvas::set_source_rgb_a (cr, ins_color, 0.6);
cairo_fill (cr);
}
// if requested, show hovering
if (UIConfiguration::instance().get_widget_prelight()
&& !((visual_state() & Gtkmm2ext::Insensitive))) {
if (_hovering) {
rounded_function (cr, 1, 1, get_width() - 2, get_height() - 2, corner_radius);
cairo_set_source_rgba (cr, 0.905, 0.917, 0.925, 0.2);
cairo_fill (cr);
}
}
//user is currently pressing the button. dark outline helps to indicate this
if (_grabbed && !(_elements & (Inactive|Menu))) {
rounded_function (cr, 1, 1, get_width() - 2, get_height() - 2, corner_radius);
cairo_set_line_width(cr, 2);
cairo_set_source_rgba (cr, 0.1, 0.1, 0.1, .5);
cairo_stroke (cr);
}
//some buttons (like processor boxes) can be selected (so they can be deleted). Draw a selection indicator
if (visual_state() & Gtkmm2ext::Selected) {
cairo_set_line_width(cr, 1);
cairo_set_source_rgba (cr, 1, 0, 0, 0.8);
rounded_function (cr, 0.5, 0.5, get_width() - 1, get_height() - 1, corner_radius);
cairo_stroke (cr);
}
//I guess this means we have keyboard focus. I don't think this works currently
//
//A: yes, it's keyboard focus and it does work when there's no editor window
// (the editor is always the first receiver for KeyDown).
// It's needed for eg. the engine-dialog at startup or after closing a sesion.
if (_focused) {
rounded_function (cr, 1.5, 1.5, get_width() - 3, get_height() - 3, corner_radius);
cairo_set_source_rgba (cr, 0.905, 0.917, 0.925, 0.8);
double dashes = 1;
cairo_set_dash (cr, &dashes, 1, 0);
cairo_set_line_cap (cr, CAIRO_LINE_CAP_BUTT);
cairo_set_line_width (cr, 1.0);
cairo_stroke (cr);
cairo_set_dash (cr, 0, 0, 0);
}
}
void
ArdourButton::set_corner_radius (float r)
{
_corner_radius = r;
CairoWidget::set_dirty ();
}
void
ArdourButton::on_realize()
{
CairoWidget::on_realize ();
ensure_layout ();
if (_layout) {
if (_layout->get_text() != _text) {
set_text_internal ();
queue_resize ();
}
}
}
void
ArdourButton::on_size_request (Gtk::Requisition* req)
{
req->width = req->height = 0;
CairoWidget::on_size_request (req);
if (_diameter == 0) {
const float newdia = rintf (11.f * UIConfiguration::instance().get_ui_scale());
if (_diameter != newdia) {
_pattern_height = 0;
_diameter = newdia;
}
}
if (_elements & Text) {
ensure_layout();
set_text_internal ();
/* render() needs the size of the displayed text */
_layout->get_pixel_size (_text_width, _text_height);
if (_tweaks & OccasionalText) {
/* size should not change based on presence or absence
* of text.
*/
} else { //if (!_text.empty() || !_sizing_text.empty()) {
req->height = std::max(req->height, (int) ceil(char_pixel_height() * BASELINESTRETCH + 1.0));
req->width += rint(1.75 * char_pixel_width()); // padding
if (!_sizing_text.empty()) {
_layout->set_text (_sizing_text); /* use sizing text */
}
int sizing_text_width = 0, sizing_text_height = 0;
_layout->get_pixel_size (sizing_text_width, sizing_text_height);
req->width += sizing_text_width;
if (!_sizing_text.empty()) {
set_text_internal (); /* restore display text */
}
}
/* XXX hack (surprise). Deal with two common rotation angles */
if (_angle == 90 || _angle == 270) {
/* do not swap text width or height because we rely on
these being the un-rotated values in ::render()
*/
swap (req->width, req->height);
}
} else {
_text_width = 0;
_text_height = 0;
}
if (_pixbuf) {
req->width += _pixbuf->get_width() + char_pixel_width();
req->height = std::max(req->height, _pixbuf->get_height() + 4);
}
if (_elements & Indicator) {
req->width += lrint (_diameter) + char_pixel_width();
req->height = std::max (req->height, (int) lrint (_diameter) + 4);
}
if ((_elements & Menu)) {
req->width += _diameter + 4;
}
if (_elements & VectorIcon) {
assert(!(_elements & Text));
const int wh = std::max (6., std::max (rint (TRACKHEADERBTNW * char_avg_pixel_width()), ceil (char_pixel_height() * BASELINESTRETCH + 1.)));
req->width += wh;
req->height = std::max(req->height, wh);
}
/* Tweaks to mess the nice stuff above up again. */
if (_tweaks & TrackHeader) {
// forget everything above and just use a fixed square [em] size
// "TrackHeader Buttons" are single letter (usually uppercase)
// a SizeGroup is much less efficient (lots of gtk work under the hood for each track)
const int wh = std::max (rint (TRACKHEADERBTNW * char_avg_pixel_width()), ceil (char_pixel_height() * BASELINESTRETCH + 1.));
req->width = wh;
req->height = wh;
}
else if (_tweaks & Square) {
// currerntly unused (again)
if (req->width < req->height)
req->width = req->height;
if (req->height < req->width)
req->height = req->width;
} else if (_sizing_text.empty() && _text_width > 0 && !(_elements & Menu)) {
// properly centered text for those elements that are centered
// (no sub-pixel offset)
if ((req->width - _text_width) & 1) { ++req->width; }
if ((req->height - _text_height) & 1) { ++req->height; }
}
#if 0
printf("REQ: %s: %dx%d\n", get_name().c_str(), req->width, req->height);
#endif
}
/**
* This sets the colors used for rendering based on the name of the button, and
* thus uses information from the GUI config data.
*/
void
ArdourButton::set_colors ()
{
_update_colors = false;
if (_fixed_colors_set == 0x3) {
return;
}
std::string name = get_name();
bool failed = false;
if (!(_fixed_colors_set & 0x1)) {
fill_active_color = UIConfiguration::instance().color (string_compose ("%1: fill active", name), &failed);
if (failed) {
fill_active_color = UIConfiguration::instance().color ("generic button: fill active");
}
}
if (!(_fixed_colors_set & 0x2)) {
fill_inactive_color = UIConfiguration::instance().color (string_compose ("%1: fill", name), &failed);
if (failed) {
fill_inactive_color = UIConfiguration::instance().color ("generic button: fill");
}
}
text_active_color = ArdourCanvas::contrasting_text_color (fill_active_color);
text_inactive_color = ArdourCanvas::contrasting_text_color (fill_inactive_color);
led_active_color = UIConfiguration::instance().color (string_compose ("%1: led active", name), &failed);
if (failed) {
led_active_color = UIConfiguration::instance().color ("generic button: led active");
}
/* The inactive color for the LED is just a fairly dark version of the
* active color.
*/
ArdourCanvas::HSV inactive (led_active_color);
inactive.v = 0.35;
led_inactive_color = inactive.color ();
}
/**
* This sets the colors used for rendering based on two fixed values, rather
* than basing them on the button name, and thus information in the GUI config
* data.
*/
void ArdourButton::set_fixed_colors (const uint32_t color_active, const uint32_t color_inactive)
{
set_active_color (color_active);
set_inactive_color (color_inactive);
}
void ArdourButton::set_active_color (const uint32_t color)
{
_fixed_colors_set |= 0x1;
fill_active_color = color;
unsigned char r, g, b, a;
UINT_TO_RGBA(color, &r, &g, &b, &a);
double white_contrast = (max (double(r), 255.) - min (double(r), 255.)) +
(max (double(g), 255.) - min (double(g), 255.)) +
(max (double(b), 255.) - min (double(b), 255.));
double black_contrast = (max (double(r), 0.) - min (double(r), 0.)) +
(max (double(g), 0.) - min (double(g), 0.)) +
(max (double(b), 0.) - min (double(b), 0.));
text_active_color = (white_contrast > black_contrast) ?
RGBA_TO_UINT(255, 255, 255, 255) : /* use white */
RGBA_TO_UINT( 0, 0, 0, 255); /* use black */
/* XXX what about led colors ? */
CairoWidget::set_dirty ();
}
void ArdourButton::set_inactive_color (const uint32_t color)
{
_fixed_colors_set |= 0x2;
fill_inactive_color = color;
unsigned char r, g, b, a;
UINT_TO_RGBA(color, &r, &g, &b, &a);
double white_contrast = (max (double(r), 255.) - min (double(r), 255.)) +
(max (double(g), 255.) - min (double(g), 255.)) +
(max (double(b), 255.) - min (double(b), 255.));
double black_contrast = (max (double(r), 0.) - min (double(r), 0.)) +
(max (double(g), 0.) - min (double(g), 0.)) +
(max (double(b), 0.) - min (double(b), 0.));
text_inactive_color = (white_contrast > black_contrast) ?
RGBA_TO_UINT(255, 255, 255, 255) : /* use white */
RGBA_TO_UINT( 0, 0, 0, 255); /* use black */
/* XXX what about led colors ? */
CairoWidget::set_dirty ();
}
void
ArdourButton::build_patterns ()
{
if (convex_pattern) {
cairo_pattern_destroy (convex_pattern);
convex_pattern = 0;
}
if (concave_pattern) {
cairo_pattern_destroy (concave_pattern);
concave_pattern = 0;
}
if (led_inset_pattern) {
cairo_pattern_destroy (led_inset_pattern);
led_inset_pattern = 0;
}
//convex gradient
convex_pattern = cairo_pattern_create_linear (0.0, 0, 0.0, get_height());
cairo_pattern_add_color_stop_rgba (convex_pattern, 0.0, 0,0,0, 0.0);
cairo_pattern_add_color_stop_rgba (convex_pattern, 1.0, 0,0,0, 0.35);
//concave gradient
concave_pattern = cairo_pattern_create_linear (0.0, 0, 0.0, get_height());
cairo_pattern_add_color_stop_rgba (concave_pattern, 0.0, 0,0,0, 0.5);
cairo_pattern_add_color_stop_rgba (concave_pattern, 0.7, 0,0,0, 0.0);
led_inset_pattern = cairo_pattern_create_linear (0.0, 0.0, 0.0, _diameter);
cairo_pattern_add_color_stop_rgba (led_inset_pattern, 0, 0,0,0, 0.4);
cairo_pattern_add_color_stop_rgba (led_inset_pattern, 1, 1,1,1, 0.7);
_pattern_height = get_height() ;
}
void
ArdourButton::set_led_left (bool yn)
{
_led_left = yn;
}
bool
ArdourButton::on_button_press_event (GdkEventButton *ev)
{
focus_handler (this);
if (ev->button == 1 && (_elements & Indicator) && _led_rect && _distinct_led_click) {
if (ev->x >= _led_rect->x && ev->x < _led_rect->x + _led_rect->width &&
ev->y >= _led_rect->y && ev->y < _led_rect->y + _led_rect->height) {
return true;
}
}
if (binding_proxy.button_press_handler (ev)) {
return true;
}
_grabbed = true;
CairoWidget::set_dirty ();
if (ev->button == 1 && !_act_on_release) {
if (_action) {
_action->activate ();
return true;
}
}
if (_fallthrough_to_parent)
return false;
return true;
}
bool
ArdourButton::on_button_release_event (GdkEventButton *ev)
{
if (ev->button == 1 && _hovering && (_elements & Indicator) && _led_rect && _distinct_led_click) {
if (ev->x >= _led_rect->x && ev->x < _led_rect->x + _led_rect->width &&
ev->y >= _led_rect->y && ev->y < _led_rect->y + _led_rect->height) {
signal_led_clicked(ev); /* EMIT SIGNAL */
return true;
}
}
_grabbed = false;
CairoWidget::set_dirty ();
if (ev->button == 1 && _hovering) {
signal_clicked ();
if (_act_on_release) {
if (_action) {
_action->activate ();
return true;
}
}
}
if (_fallthrough_to_parent)
return false;
return true;
}
void
ArdourButton::set_distinct_led_click (bool yn)
{
_distinct_led_click = yn;
setup_led_rect ();
}
void
ArdourButton::color_handler ()
{
_update_colors = true;
CairoWidget::set_dirty ();
}
void
ArdourButton::on_size_allocate (Allocation& alloc)
{
CairoWidget::on_size_allocate (alloc);
setup_led_rect ();
}
void
ArdourButton::set_controllable (boost::shared_ptr<Controllable> c)
{
watch_connection.disconnect ();
binding_proxy.set_controllable (c);
}
void
ArdourButton::watch ()
{
boost::shared_ptr<Controllable> c (binding_proxy.get_controllable ());
if (!c) {
warning << _("button cannot watch state of non-existing Controllable\n") << endmsg;
return;
}
c->Changed.connect (watch_connection, invalidator(*this), boost::bind (&ArdourButton::controllable_changed, this), gui_context());
}
void
ArdourButton::controllable_changed ()
{
float val = binding_proxy.get_controllable()->get_value();
if (fabs (val) >= 0.5f) {
set_active_state (Gtkmm2ext::ExplicitActive);
} else {
unset_active_state ();
}
CairoWidget::set_dirty ();
}
void
ArdourButton::set_related_action (RefPtr<Action> act)
{
Gtkmm2ext::Activatable::set_related_action (act);
if (_action) {
action_tooltip_changed ();
Glib::RefPtr<ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic (_action);
if (tact) {
action_toggled ();
tact->signal_toggled().connect (sigc::mem_fun (*this, &ArdourButton::action_toggled));
}
_action->connect_property_changed ("sensitive", sigc::mem_fun (*this, &ArdourButton::action_sensitivity_changed));
_action->connect_property_changed ("visible", sigc::mem_fun (*this, &ArdourButton::action_visibility_changed));
_action->connect_property_changed ("tooltip", sigc::mem_fun (*this, &ArdourButton::action_tooltip_changed));
}
}
void
ArdourButton::action_toggled ()
{
Glib::RefPtr<ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic (_action);
if (tact) {
if (tact->get_active()) {
set_active_state (Gtkmm2ext::ExplicitActive);
} else {
unset_active_state ();
}
}
}
void
ArdourButton::on_style_changed (const RefPtr<Gtk::Style>&)
{
_update_colors = true;
CairoWidget::set_dirty ();
_char_pixel_width = 0;
_char_pixel_height = 0;
if (is_realized()) {
queue_resize ();
}
}
void
ArdourButton::on_name_changed ()
{
_char_pixel_width = 0;
_char_pixel_height = 0;
_diameter = 0;
_update_colors = true;
if (is_realized()) {
queue_resize ();
}
}
void
ArdourButton::setup_led_rect ()
{
if (!(_elements & Indicator)) {
delete _led_rect;
_led_rect = 0;
return;
}
if (!_led_rect) {
_led_rect = new cairo_rectangle_t;
}
if (_elements & Text) {
if (_led_left) {
_led_rect->x = char_pixel_width();
} else {
_led_rect->x = get_width() - char_pixel_width() + _diameter;
}
} else {
/* centered */
_led_rect->x = .5 * get_width() - _diameter;
}
_led_rect->y = .5 * (get_height() - _diameter);
_led_rect->width = _diameter;
_led_rect->height = _diameter;
}
void
ArdourButton::set_image (const RefPtr<Gdk::Pixbuf>& img)
{
_elements = (ArdourButton::Element) (_elements & ~ArdourButton::Text);
_pixbuf = img;
if (is_realized()) {
queue_resize ();
}
}
void
ArdourButton::set_active_state (Gtkmm2ext::ActiveState s)
{
bool changed = (_active_state != s);
CairoWidget::set_active_state (s);
if (changed) {
_update_colors = true;
CairoWidget::set_dirty ();
}
}
void
ArdourButton::set_visual_state (Gtkmm2ext::VisualState s)
{
bool changed = (_visual_state != s);
CairoWidget::set_visual_state (s);
if (changed) {
_update_colors = true;
CairoWidget::set_dirty ();
}
}
bool
ArdourButton::on_focus_in_event (GdkEventFocus* ev)
{
_focused = true;
CairoWidget::set_dirty ();
return CairoWidget::on_focus_in_event (ev);
}
bool
ArdourButton::on_focus_out_event (GdkEventFocus* ev)
{
_focused = false;
CairoWidget::set_dirty ();
return CairoWidget::on_focus_out_event (ev);
}
bool
ArdourButton::on_key_release_event (GdkEventKey *ev) {
if (_focused &&
(ev->keyval == GDK_space || ev->keyval == GDK_Return))
{
signal_clicked();
if (_action) {
_action->activate ();
}
return true;
}
return CairoWidget::on_key_release_event (ev);
}
bool
ArdourButton::on_enter_notify_event (GdkEventCrossing* ev)
{
_hovering = (_elements & Inactive) ? false : true;
if (UIConfiguration::instance().get_widget_prelight()) {
CairoWidget::set_dirty ();
}
return CairoWidget::on_enter_notify_event (ev);
}
bool
ArdourButton::on_leave_notify_event (GdkEventCrossing* ev)
{
_hovering = false;
if (UIConfiguration::instance().get_widget_prelight()) {
CairoWidget::set_dirty ();
}
return CairoWidget::on_leave_notify_event (ev);
}
bool
ArdourButton::on_grab_broken_event(GdkEventGrabBroken* grab_broken_event) {
/* Our implicit grab due to a button_press was broken by another grab:
* the button will not get any button_release event if the mouse leaves
* while the grab is taken, so unpress ourselves */
_grabbed = false;
CairoWidget::set_dirty ();
return true;
}
void
ArdourButton::set_tweaks (Tweaks t)
{
if (_tweaks != t) {
_tweaks = t;
if (is_realized()) {
queue_resize ();
}
}
}
void
ArdourButton::action_sensitivity_changed ()
{
if (_action->property_sensitive ()) {
set_visual_state (Gtkmm2ext::VisualState (visual_state() & ~Gtkmm2ext::Insensitive));
} else {
set_visual_state (Gtkmm2ext::VisualState (visual_state() | Gtkmm2ext::Insensitive));
}
}
void
ArdourButton::set_layout_ellipsize_width (int w)
{
if (_layout_ellipsize_width == w) {
return;
}
_layout_ellipsize_width = w;
if (!_layout) {
return;
}
if (_layout_ellipsize_width > 3 * PANGO_SCALE) {
_layout->set_width (_layout_ellipsize_width - 3 * PANGO_SCALE);
}
if (is_realized ()) {
queue_resize ();
}
}
void
ArdourButton::set_text_ellipsize (Pango::EllipsizeMode e)
{
if (_ellipsis == e) {
return;
}
_ellipsis = e;
if (!_layout) {
return;
}
_layout->set_ellipsize(_ellipsis);
if (_layout_ellipsize_width > 3 * PANGO_SCALE) {
_layout->set_width (_layout_ellipsize_width - 3 * PANGO_SCALE);
}
if (is_realized ()) {
queue_resize ();
}
}
void
ArdourButton::ensure_layout ()
{
if (!_layout) {
ensure_style ();
_layout = Pango::Layout::create (get_pango_context());
_layout->set_ellipsize(_ellipsis);
if (_layout_ellipsize_width > 3 * PANGO_SCALE) {
_layout->set_width (_layout_ellipsize_width - 3* PANGO_SCALE);
}
}
}
void
ArdourButton::recalc_char_pixel_geometry ()
{
if (_char_pixel_height > 0 && _char_pixel_width > 0) {
return;
}
ensure_layout();
// NB. this is not static, since the geometry is different
// depending on the font used.
int w, h;
std::string x = _("@ABCDEFGHIJLKMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789");
_layout->set_text (x);
_layout->get_pixel_size (w, h);
_char_pixel_height = std::max(4, h);
// number of actual chars in the string (not bytes)
// Glib to the rescue.
Glib::ustring gx(x);
_char_avg_pixel_width = w / (float)gx.size();
_char_pixel_width = std::max(4, (int) ceil (_char_avg_pixel_width));
set_text_internal (); /* restore display text */
}
void
ArdourButton::action_visibility_changed ()
{
if (_action->property_visible ()) {
show ();
} else {
hide ();
}
}
void
ArdourButton::action_tooltip_changed ()
{
string str = _action->property_tooltip().get_value();
set_tooltip (*this, str);
}
void
ArdourButton::set_elements (Element e)
{
_elements = e;
CairoWidget::set_dirty ();
}
void
ArdourButton::add_elements (Element e)
{
_elements = (ArdourButton::Element) (_elements | e);
CairoWidget::set_dirty ();
}
void
ArdourButton::set_icon (Gtkmm2ext::ArdourIcon::Icon i)
{
_icon = i;
_elements = (ArdourButton::Element) ((_elements | ArdourButton::VectorIcon) & ~ArdourButton::Text);
CairoWidget::set_dirty ();
}
void
ArdourButton::set_custom_led_color (uint32_t c, bool useit)
{
if (led_custom_color == c && use_custom_led_color == useit) {
return;
}
led_custom_color = c;
use_custom_led_color = useit;
CairoWidget::set_dirty ();
}