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livetrax/gtk2_ardour/meter_patterns.cc
Robin Gareus 2106a12edd improve caching of metric and tick patters 
* selectively clear cache (meterbridge, mixer)
* free memory of patterns on clear
2013-07-14 11:34:31 +02:00

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/*
Copyright (C) 2013 Paul Davis
Author: Robin Gareus
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 <gtkmm2ext/cairo_widget.h>
#include <gtkmm2ext/gtk_ui.h>
#include <gtkmm2ext/utils.h>
#include <gtkmm2ext/rgb_macros.h>
#include <ardour/rc_configuration.h>
#include "ardour_ui.h"
#include "utils.h"
#include "logmeter.h"
#include "meter_patterns.h"
#include "i18n.h"
using namespace ARDOUR;
using namespace PBD;
using namespace Gtk;
using namespace Gtkmm2ext;
using namespace std;
static const int max_pattern_metric_size = 1026;
sigc::signal<void> ResetAllPeakDisplays;
sigc::signal<void,ARDOUR::Route*> ResetRoutePeakDisplays;
sigc::signal<void,ARDOUR::RouteGroup*> ResetGroupPeakDisplays;
sigc::signal<void> RedrawMetrics;
sigc::signal<void, int, ARDOUR::RouteGroup*, ARDOUR::MeterType> SetMeterTypeMulti;
cairo_pattern_t*
meter_render_ticks (Gtk::Widget& w, vector<ARDOUR::DataType> types)
{
Glib::RefPtr<Gdk::Window> win (w.get_window());
bool background;
gint width, height;
win->get_size (width, height);
background = types.size() == 0
|| w.get_name().substr(w.get_name().length() - 4) == "Left"
|| w.get_name().substr(w.get_name().length() - 5) == "Right";
cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
cairo_t* cr = cairo_create (surface);
cairo_move_to (cr, 0, 0);
cairo_rectangle (cr, 0, 0, width, height);
{
Gdk::Color c = w.get_style()->get_bg (background ? Gtk::STATE_ACTIVE : Gtk::STATE_NORMAL);
cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
}
cairo_fill (cr);
height = min(max_pattern_metric_size, height);
uint32_t peakcolor = ARDOUR_UI::config()->color_by_name ("meterbridge peaklabel");
for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
Gdk::Color c;
c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
if (types.size() > 1) {
/* we're overlaying more than 1 set of marks, so use different colours */
switch (*i) {
case DataType::AUDIO:
c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
break;
case DataType::MIDI:
c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
break;
}
} else {
c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
}
std::map<int,float> points;
switch (*i) {
case DataType::AUDIO:
points.insert (std::pair<int,float>(-60, 0.5));
points.insert (std::pair<int,float>(-50, 0.5));
points.insert (std::pair<int,float>(-40, 0.5));
points.insert (std::pair<int,float>(-30, 0.5));
if (Config->get_meter_line_up_level() == MeteringLineUp24) {
points.insert (std::pair<int,float>(-24, 0.5));
} else {
points.insert (std::pair<int,float>(-25, 0.5));
}
points.insert (std::pair<int,float>(-20, 1.0));
points.insert (std::pair<int,float>(-19, 0.5));
points.insert (std::pair<int,float>(-18, 1.0));
points.insert (std::pair<int,float>(-17, 0.5));
points.insert (std::pair<int,float>(-16, 0.5));
points.insert (std::pair<int,float>(-15, 1.0));
points.insert (std::pair<int,float>(-14, 0.5));
points.insert (std::pair<int,float>(-13, 0.5));
points.insert (std::pair<int,float>(-12, 0.5));
points.insert (std::pair<int,float>(-11, 0.5));
points.insert (std::pair<int,float>(-10, 1.0));
points.insert (std::pair<int,float>( -9, 0.5));
points.insert (std::pair<int,float>( -8, 0.5));
points.insert (std::pair<int,float>( -7, 0.5));
points.insert (std::pair<int,float>( -6, 0.5));
points.insert (std::pair<int,float>( -5, 1.0));
points.insert (std::pair<int,float>( -4, 0.5));
points.insert (std::pair<int,float>( -3, 0.5));
points.insert (std::pair<int,float>( -2, 0.5));
points.insert (std::pair<int,float>( -1, 0.5));
points.insert (std::pair<int,float>( 0, 1.0));
points.insert (std::pair<int,float>( 1, 0.5));
points.insert (std::pair<int,float>( 2, 0.5));
points.insert (std::pair<int,float>( 3, 0.5));
points.insert (std::pair<int,float>( 4, 0.5));
points.insert (std::pair<int,float>( 5, 0.5));
break;
case DataType::MIDI:
points.insert (std::pair<int,float>( 0, 1.0));
points.insert (std::pair<int,float>( 16, 0.5));
points.insert (std::pair<int,float>( 32, 0.5));
points.insert (std::pair<int,float>( 48, 0.5));
points.insert (std::pair<int,float>( 64, 1.0));
points.insert (std::pair<int,float>( 80, 0.5));
points.insert (std::pair<int,float>( 96, 0.5));
points.insert (std::pair<int,float>(100, 1.0));
points.insert (std::pair<int,float>(112, 0.5));
points.insert (std::pair<int,float>(127, 1.0));
break;
}
for (std::map<int,float>::const_iterator j = points.begin(); j != points.end(); ++j) {
cairo_set_line_width (cr, (j->second));
float fraction = 0;
gint pos;
switch (*i) {
case DataType::AUDIO:
if (j->first >= 0 || j->first == -9) {
cairo_set_source_rgb (cr,
UINT_RGBA_R_FLT(peakcolor),
UINT_RGBA_G_FLT(peakcolor),
UINT_RGBA_B_FLT(peakcolor));
} else {
cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
}
fraction = log_meter (j->first);
pos = height - (gint) floor (height * fraction);
cairo_move_to(cr, 0, pos + .5);
cairo_line_to(cr, 3, pos + .5);
cairo_stroke (cr);
break;
case DataType::MIDI:
fraction = (j->first) / 127.0;
pos = 1 + height - (gint) floor (height * fraction);
pos = min (pos, height);
cairo_arc(cr, 1.5, pos + .5, 1.0, 0, 2 * M_PI);
cairo_fill(cr);
break;
}
}
}
cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
cairo_destroy (cr);
cairo_surface_destroy (surface);
return pattern;
}
cairo_pattern_t*
meter_render_metrics (Gtk::Widget& w, vector<DataType> types)
{
Glib::RefPtr<Gdk::Window> win (w.get_window());
bool tickleft;
bool background;
gint width, height;
win->get_size (width, height);
tickleft = w.get_name().substr(w.get_name().length() - 4) == "Left";
background = types.size() == 0 || tickleft || w.get_name().substr(w.get_name().length() - 5) == "Right";
cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
cairo_t* cr = cairo_create (surface);
Glib::RefPtr<Pango::Layout> layout = Pango::Layout::create(w.get_pango_context());
Pango::AttrList audio_font_attributes;
Pango::AttrList midi_font_attributes;
Pango::AttrList unit_font_attributes;
Pango::AttrFontDesc* font_attr;
Pango::FontDescription font;
font = Pango::FontDescription (""); // use defaults
//font = get_font_for_style("gain-fader");
//font = w.get_style()->get_font();
font.set_weight (Pango::WEIGHT_NORMAL);
font.set_size (9.0 * PANGO_SCALE);
font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
audio_font_attributes.change (*font_attr);
delete font_attr;
font.set_weight (Pango::WEIGHT_ULTRALIGHT);
font.set_stretch (Pango::STRETCH_ULTRA_CONDENSED);
font.set_size (7.5 * PANGO_SCALE);
font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
midi_font_attributes.change (*font_attr);
delete font_attr;
font.set_size (7.0 * PANGO_SCALE);
font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
unit_font_attributes.change (*font_attr);
delete font_attr;
cairo_move_to (cr, 0, 0);
cairo_rectangle (cr, 0, 0, width, height);
{
Gdk::Color c = w.get_style()->get_bg (background ? Gtk::STATE_ACTIVE : Gtk::STATE_NORMAL);
cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
}
cairo_fill (cr);
height = min(max_pattern_metric_size, height);
uint32_t peakcolor = ARDOUR_UI::config()->color_by_name ("meterbridge peaklabel");
for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
Gdk::Color c;
if (types.size() > 1) {
/* we're overlaying more than 1 set of marks, so use different colours */
Gdk::Color c;
switch (*i) {
case DataType::AUDIO:
c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
break;
case DataType::MIDI:
c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
break;
}
} else {
c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
}
std::map<int,float> points;
switch (*i) {
case DataType::AUDIO:
layout->set_attributes (audio_font_attributes);
points.insert (std::pair<int,float>(-50, 0.5));
points.insert (std::pair<int,float>(-40, 0.5));
points.insert (std::pair<int,float>(-30, 0.5));
points.insert (std::pair<int,float>(-20, 1.0));
if (types.size() == 1) {
if (Config->get_meter_line_up_level() == MeteringLineUp24) {
points.insert (std::pair<int,float>(-24, 0.5));
} else {
points.insert (std::pair<int,float>(-25, 0.5));
}
points.insert (std::pair<int,float>(-15, 1.0));
}
points.insert (std::pair<int,float>(-18, 1.0));
points.insert (std::pair<int,float>(-10, 1.0));
points.insert (std::pair<int,float>( -5, 1.0));
points.insert (std::pair<int,float>( -3, 0.5));
points.insert (std::pair<int,float>( 0, 1.0));
points.insert (std::pair<int,float>( 3, 0.5));
break;
case DataType::MIDI:
layout->set_attributes (midi_font_attributes);
points.insert (std::pair<int,float>( 0, 1.0));
if (types.size() == 1) {
points.insert (std::pair<int,float>( 16, 0.5));
points.insert (std::pair<int,float>( 32, 0.5));
points.insert (std::pair<int,float>( 48, 0.5));
points.insert (std::pair<int,float>( 64, 1.0));
points.insert (std::pair<int,float>( 80, 0.5));
points.insert (std::pair<int,float>( 96, 0.5));
points.insert (std::pair<int,float>(100, 0.5));
points.insert (std::pair<int,float>(112, 0.5));
} else {
/* labels that don't overlay with dB */
points.insert (std::pair<int,float>( 24, 0.5));
points.insert (std::pair<int,float>( 48, 0.5));
points.insert (std::pair<int,float>( 72, 0.5));
}
points.insert (std::pair<int,float>(127, 1.0));
break;
}
char buf[32];
gint pos;
for (std::map<int,float>::const_iterator j = points.begin(); j != points.end(); ++j) {
float fraction = 0;
switch (*i) {
case DataType::AUDIO:
cairo_set_line_width (cr, (j->second));
if (j->first >= 0) {
cairo_set_source_rgb (cr,
UINT_RGBA_R_FLT(peakcolor),
UINT_RGBA_G_FLT(peakcolor),
UINT_RGBA_B_FLT(peakcolor));
}
fraction = log_meter (j->first);
snprintf (buf, sizeof (buf), "%+2d", j->first);
pos = height - (gint) floor (height * fraction);
if (tickleft) {
cairo_move_to(cr, width-2.5, pos + .5);
cairo_line_to(cr, width, pos + .5);
} else {
cairo_move_to(cr, 0, pos + .5);
cairo_line_to(cr, 2.5, pos + .5);
}
cairo_stroke (cr);
break;
case DataType::MIDI:
cairo_set_line_width (cr, 1.0);
fraction = (j->first) / 127.0;
snprintf (buf, sizeof (buf), "%3d", j->first);
pos = 1 + height - (gint) rintf (height * fraction);
pos = min (pos, height);
if (tickleft) {
cairo_arc(cr, width - 2.0, pos + .5, 1.0, 0, 2 * M_PI);
} else {
cairo_arc(cr, 3, pos + .5, 1.0, 0, 2 * M_PI);
}
cairo_fill(cr);
break;
}
layout->set_text(buf);
/* we want logical extents, not ink extents here */
int tw, th;
layout->get_pixel_size(tw, th);
int p = pos - (th / 2);
p = min (p, height - th);
p = max (p, 0);
cairo_move_to (cr, width-4-tw, p);
pango_cairo_show_layout (cr, layout->gobj());
}
}
if (types.size() == 1) {
int tw, th;
layout->set_attributes (unit_font_attributes);
switch (types.at(0)) {
case DataType::AUDIO:
layout->set_text("dBFS");
layout->get_pixel_size(tw, th);
break;
case DataType::MIDI:
layout->set_text("vel");
layout->get_pixel_size(tw, th);
break;
}
Gdk::Color c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
cairo_move_to (cr, 2, height - th - 1.5);
pango_cairo_show_layout (cr, layout->gobj());
}
cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
cairo_destroy (cr);
cairo_surface_destroy (surface);
return pattern;
}
typedef std::map<std::string,cairo_pattern_t*> TickPatterns;
static TickPatterns ticks_patterns;
gint meter_expose_ticks (GdkEventExpose *ev, std::vector<ARDOUR::DataType> types, Gtk::DrawingArea *mta)
{
Glib::RefPtr<Gdk::Window> win (mta->get_window());
cairo_t* cr;
cr = gdk_cairo_create (win->gobj());
/* clip to expose area */
gdk_cairo_rectangle (cr, &ev->area);
cairo_clip (cr);
cairo_pattern_t* pattern;
TickPatterns::iterator i = ticks_patterns.find (mta->get_name());
if (i == ticks_patterns.end()) {
pattern = meter_render_ticks (*mta, types);
ticks_patterns[mta->get_name()] = pattern;
} else {
pattern = i->second;
}
cairo_move_to (cr, 0, 0);
cairo_set_source (cr, pattern);
gint width, height;
win->get_size (width, height);
cairo_rectangle (cr, 0, 0, width, height);
cairo_fill (cr);
cairo_destroy (cr);
return true;
}
typedef std::map<std::string,cairo_pattern_t*> MetricPatterns;
static MetricPatterns metric_patterns;
gint meter_expose_metrics (GdkEventExpose *ev, std::vector<ARDOUR::DataType> types, Gtk::DrawingArea *mma)
{
Glib::RefPtr<Gdk::Window> win (mma->get_window());
cairo_t* cr;
cr = gdk_cairo_create (win->gobj());
/* clip to expose area */
gdk_cairo_rectangle (cr, &ev->area);
cairo_clip (cr);
cairo_pattern_t* pattern;
MetricPatterns::iterator i = metric_patterns.find (mma->get_name());
if (i == metric_patterns.end()) {
pattern = meter_render_metrics (*mma, types);
metric_patterns[mma->get_name()] = pattern;
} else {
pattern = i->second;
}
cairo_move_to (cr, 0, 0);
cairo_set_source (cr, pattern);
gint width, height;
win->get_size (width, height);
cairo_rectangle (cr, 0, 0, width, height);
cairo_fill (cr);
cairo_destroy (cr);
return true;
}
void meter_clear_pattern_cache(int which) {
MetricPatterns::iterator i = metric_patterns.begin();
TickPatterns::iterator j = ticks_patterns.begin();
while (i != metric_patterns.end()) {
int m = 4;
std::string n = i->first;
if (n.substr(n.length() - 4) == "Left") { m = 1; }
if (n.substr(n.length() - 5) == "Right") { m = 2; }
if (which & m) {
cairo_pattern_destroy(i->second);
metric_patterns.erase(i++);
} else {
++i;
}
}
while (j != ticks_patterns.end()) {
int m = 4;
std::string n = j->first;
if (n.substr(n.length() - 4) == "Left") { m = 1; }
if (n.substr(n.length() - 5) == "Right") { m = 2; }
if (which & m) {
cairo_pattern_destroy(j->second);
ticks_patterns.erase(j++);
} else {
++j;
}
}
RedrawMetrics();
}
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