ardour/livetrax
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Separate DSP load indicator into generic gauge widget

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This commit is contained in:
Robin Gareus 2018-01-14 17:38:49 +01:00
parent ef1301759d
commit b0c5005cec
5 changed files with 225 additions and 100 deletions
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126
gtk2_ardour/ardour_gauge.cc Normal file
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@ -0,0 +1,126 @@
/*
* Copyright (C) 2017 Robin Gareus <robin@gareus.org>
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "gtkmm2ext/utils.h"
#include "widgets/tooltips.h"
#include "ardour_gauge.h"
#include "ui_config.h"
#define PADDING 3
ArdourGauge::ArdourGauge (std::string const& max_text)
{
_layout = Pango::Layout::create (get_pango_context ());
_layout->set_text (max_text);
}
ArdourGauge::~ArdourGauge ()
{
}
void
ArdourGauge::on_size_request (Gtk::Requisition* req)
{
req->width = req->height = 0;
CairoWidget::on_size_request (req);
int w, h;
_layout->get_pixel_size (w, h);
req->width = std::max (req->width, std::max (12, h + PADDING));
req->height = std::max (req->height, 20 /*std::max (20, w + PADDING) */);
}
void
ArdourGauge::update ()
{
queue_draw ();
ArdourWidgets::set_tooltip (*this, tooltip_text ());
}
void
ArdourGauge::update (std::string const& txt)
{
_layout->set_text (txt);
update ();
}
void
ArdourGauge::render (Cairo::RefPtr<Cairo::Context> const& ctx, cairo_rectangle_t*)
{
cairo_t* cr = ctx->cobj ();
Gtkmm2ext::Color base = UIConfiguration::instance ().color ("ruler base");
Gtkmm2ext::Color text = UIConfiguration::instance ().color ("ruler text");
const int width = get_width ();
const int height = get_height ();
Gtkmm2ext::rounded_rectangle (cr, 0, 0, width, height, PADDING + 1);
Gtkmm2ext::set_source_rgba (cr, base);
cairo_fill (cr);
if (alert ()) {
Gtkmm2ext::rounded_rectangle (cr, 1, 1, width - 2, height - 2, PADDING + 1);
cairo_set_source_rgba (cr, 0.5, 0, 0, 1.0);
cairo_fill (cr);
}
Gtkmm2ext::rounded_rectangle (cr, PADDING, PADDING, width - PADDING - PADDING, height - PADDING - PADDING, PADDING + 1);
cairo_clip (cr);
const float lvl = level ();
int bh = (height - PADDING - PADDING) * lvl;
cairo_rectangle (cr, PADDING, height - PADDING - bh, width - PADDING, bh);
switch (indicator ()) {
case Level_OK:
cairo_set_source_rgba (cr, 0, .5, 0, 1.0);
break;
case Level_WARN:
cairo_set_source_rgba (cr, .7, .6, 0, 1.0);
break;
case Level_CRIT:
cairo_set_source_rgba (cr, .9, 0, 0, 1.0);
break;
}
cairo_fill (cr);
int w, h;
_layout->get_pixel_size (w, h);
cairo_save (cr);
cairo_new_path (cr);
cairo_translate (cr, width * .5, height * .5);
cairo_rotate (cr, M_PI * -.5);
cairo_move_to (cr, w * -.5, h * -.5);
pango_cairo_update_layout (cr, _layout->gobj());
Gtkmm2ext::set_source_rgb_a (cr, base, 0.5);
pango_cairo_layout_path (cr, _layout->gobj());
cairo_set_line_width (cr, 1.5);
cairo_stroke (cr);
cairo_move_to (cr, w * -.5, h * -.5);
pango_cairo_update_layout (cr, _layout->gobj());
Gtkmm2ext::set_source_rgba (cr, text);
pango_cairo_show_layout (cr, _layout->gobj());
cairo_restore (cr);
}

59
gtk2_ardour/ardour_gauge.h Normal file
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@ -0,0 +1,59 @@
/*
* Copyright (C) 2017 Robin Gareus <robin@gareus.org>
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef __gtkardour_gauge_h__
#define __gtkardour_gauge_h__
#include <pangomm.h>
#include "gtkmm2ext/cairo_widget.h"
class ArdourGauge : public CairoWidget
{
public:
ArdourGauge (std::string const& max_text = "00.0%");
virtual ~ArdourGauge ();
protected:
enum Status {
Level_OK, /* green */
Level_WARN, /* yellow */
Level_CRIT /* red */
};
/* gauge's background, indicate alarming conditions eg. xrun */
virtual bool alert () const { return false; }
/* guage inidicator color */
virtual Status indicator () const = 0;
/* gauge level 0 <= level <= 1 */
virtual float level () const = 0;
virtual std::string tooltip_text () = 0;
void update ();
void update (std::string const &);
private:
void on_size_request (Gtk::Requisition*);
void render (Cairo::RefPtr<Cairo::Context> const&, cairo_rectangle_t*);
Glib::RefPtr<Pango::Layout> _layout;
};
#endif

121
gtk2_ardour/dsp_load_indicator.cc
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@ -16,40 +16,18 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "gtkmm2ext/utils.h"
#include "widgets/tooltips.h"
#include "ardour_ui.h"
#include "dsp_load_indicator.h"
#include "ui_config.h"
#include "pbd/i18n.h"
#define PADDING 3
DspLoadIndicator::DspLoadIndicator ()
: _dsp_load (0)
: ArdourGauge ("00.0%")
, _dsp_load (0)
, _xrun_count (0)
{
_layout = Pango::Layout::create (get_pango_context ());
_layout->set_text ("99.9%");
}
DspLoadIndicator::~DspLoadIndicator ()
{
}
void
DspLoadIndicator::on_size_request (Gtk::Requisition* req)
{
req->width = req->height = 0;
CairoWidget::on_size_request (req);
int w, h;
_layout->get_pixel_size (w, h);
req->width = std::max (req->width, std::max (12, h + PADDING));
req->height = std::max (req->height, 20 /*std::max (20, w + PADDING) */);
}
void
@ -59,8 +37,7 @@ DspLoadIndicator::set_xrun_count (const unsigned int xruns)
return;
}
_xrun_count = xruns;
queue_draw ();
update_tooltip ();
update ();
}
void
@ -73,14 +50,34 @@ DspLoadIndicator::set_dsp_load (const double load)
char buf[64];
snprintf (buf, sizeof (buf), "%.1f%%", _dsp_load);
_layout->set_text (buf);
queue_draw ();
update_tooltip ();
update (std::string (buf));
}
void
DspLoadIndicator::update_tooltip ()
float
DspLoadIndicator::level () const {
return _dsp_load / 100.f;
}
bool
DspLoadIndicator::alert () const
{
return _xrun_count > 0;
}
ArdourGauge::Status
DspLoadIndicator::indicator () const
{
if (_dsp_load > 90) {
return ArdourGauge::Level_OK;
} else if (_dsp_load > 80) {
return ArdourGauge::Level_WARN;
} else {
return ArdourGauge::Level_CRIT;
}
}
std::string
DspLoadIndicator::tooltip_text ()
{
char buf[64];
if (_xrun_count == UINT_MAX) {
@ -90,65 +87,7 @@ DspLoadIndicator::update_tooltip ()
} else {
snprintf (buf, sizeof (buf), _("DSP: %.1f%% X: %u"), _dsp_load, _xrun_count);
}
ArdourWidgets::set_tooltip (*this, buf);
}
void
DspLoadIndicator::render (Cairo::RefPtr<Cairo::Context> const& ctx, cairo_rectangle_t*)
{
cairo_t* cr = ctx->cobj ();
Gtkmm2ext::Color base = UIConfiguration::instance ().color ("ruler base");
Gtkmm2ext::Color text = UIConfiguration::instance ().color ("ruler text");
const int width = get_width ();
const int height = get_height ();
Gtkmm2ext::rounded_rectangle (cr, 0, 0, width, height, PADDING + 1);
Gtkmm2ext::set_source_rgba (cr, base);
cairo_fill (cr);
if (_xrun_count > 0) {
Gtkmm2ext::rounded_rectangle (cr, 1, 1, width - 2, height - 2, PADDING + 1);
cairo_set_source_rgba (cr, 0.5, 0, 0, 1.0);
cairo_fill (cr);
}
Gtkmm2ext::rounded_rectangle (cr, PADDING, PADDING, width - PADDING - PADDING, height - PADDING - PADDING, PADDING + 1);
cairo_clip (cr);
int bh = (height - PADDING - PADDING) * _dsp_load / 100.f;
cairo_rectangle (cr, PADDING, height - PADDING - bh, width - PADDING, bh);
if (_dsp_load > 90) {
cairo_set_source_rgba (cr, .9, 0, 0, 1.0);
} else if (_dsp_load > 80) {
cairo_set_source_rgba (cr, .7, .6, 0, 1.0);
} else {
cairo_set_source_rgba (cr, 0, .5, 0, 1.0);
}
cairo_fill (cr);
int w, h;
_layout->get_pixel_size (w, h);
cairo_save (cr);
cairo_new_path (cr);
cairo_translate (cr, width * .5, height * .5);
cairo_rotate (cr, M_PI * -.5);
cairo_move_to (cr, w * -.5, h * -.5);
pango_cairo_update_layout (cr, _layout->gobj());
Gtkmm2ext::set_source_rgb_a (cr, base, 0.5);
pango_cairo_layout_path (cr, _layout->gobj());
cairo_set_line_width (cr, 1.5);
cairo_stroke (cr);
cairo_move_to (cr, w * -.5, h * -.5);
pango_cairo_update_layout (cr, _layout->gobj());
Gtkmm2ext::set_source_rgba (cr, text);
pango_cairo_show_layout (cr, _layout->gobj());
cairo_restore (cr);
return buf;
}
bool

18
gtk2_ardour/dsp_load_indicator.h
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@ -21,25 +21,25 @@
#include <pangomm.h>
#include "gtkmm2ext/cairo_widget.h"
#include "ardour_gauge.h"
class DspLoadIndicator : public CairoWidget
class DspLoadIndicator : public ArdourGauge
{
public:
public:
DspLoadIndicator ();
~DspLoadIndicator ();
void set_xrun_count (const unsigned int xruns);
void set_dsp_load (const double load);
protected:
bool alert () const;
ArdourGauge::Status indicator () const;
float level () const;
std::string tooltip_text ();
private:
void on_size_request (Gtk::Requisition*);
void render (Cairo::RefPtr<Cairo::Context> const&, cairo_rectangle_t*);
bool on_button_release_event (GdkEventButton*);
void update_tooltip ();
Glib::RefPtr<Pango::Layout> _layout;
float _dsp_load;
unsigned int _xrun_count;
};

1
gtk2_ardour/wscript
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@ -32,6 +32,7 @@ gtk2_ardour_sources = [
'ambiguous_file_dialog.cc',
'analysis_window.cc',
'ardour_dialog.cc',
'ardour_gauge.cc',
'ardour_http.cc',
'ardour_ui.cc',
'ardour_ui2.cc',