Paul Davis
45d3ec1437
git-svn-id: svn://localhost/ardour2/branches/2.1-staging@1698 d708f5d6-7413-0410-9779-e7cbd77b26cf
441 lines
10 KiB
C++
441 lines
10 KiB
C++
/*
|
|
Copyright (C) 2003-2006 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.
|
|
|
|
$Id$
|
|
*/
|
|
|
|
#include <iostream>
|
|
#include <cmath>
|
|
#include <algorithm>
|
|
#include <gdkmm/rectangle.h>
|
|
#include <gtkmm2ext/fastmeter.h>
|
|
#include <gtkmm2ext/utils.h>
|
|
#include <gtkmm/style.h>
|
|
#include <string.h>
|
|
|
|
using namespace Gtk;
|
|
using namespace Gdk;
|
|
using namespace Glib;
|
|
using namespace Gtkmm2ext;
|
|
using namespace std;
|
|
|
|
|
|
int FastMeter::min_v_pixbuf_size = 50;
|
|
int FastMeter::max_v_pixbuf_size = 1024;
|
|
Glib::RefPtr<Gdk::Pixbuf>* FastMeter::v_pixbuf_cache = 0;
|
|
|
|
int FastMeter::min_h_pixbuf_size = 50;
|
|
int FastMeter::max_h_pixbuf_size = 1024;
|
|
Glib::RefPtr<Gdk::Pixbuf>* FastMeter::h_pixbuf_cache = 0;
|
|
|
|
|
|
FastMeter::FastMeter (long hold, unsigned long dimen, Orientation o)
|
|
{
|
|
orientation = o;
|
|
hold_cnt = hold;
|
|
hold_state = 0;
|
|
current_peak = 0;
|
|
current_level = 0;
|
|
|
|
set_events (BUTTON_PRESS_MASK|BUTTON_RELEASE_MASK);
|
|
|
|
pixrect.x = 0;
|
|
pixrect.y = 0;
|
|
|
|
if (orientation == Vertical) {
|
|
pixbuf = request_vertical_meter(dimen, 250);
|
|
} else {
|
|
pixbuf = request_horizontal_meter(186, dimen);
|
|
}
|
|
|
|
pixheight = pixbuf->get_height();
|
|
pixwidth = pixbuf->get_width();
|
|
|
|
if (orientation == Vertical) {
|
|
pixrect.width = min (pixwidth, (gint) dimen);
|
|
pixrect.height = pixheight;
|
|
} else {
|
|
pixrect.width = pixwidth;
|
|
pixrect.height = min (pixheight, (gint) dimen);
|
|
}
|
|
|
|
request_width = pixrect.width;
|
|
request_height= pixrect.height;
|
|
}
|
|
|
|
Glib::RefPtr<Gdk::Pixbuf> FastMeter::request_vertical_meter(int width, int height)
|
|
{
|
|
if (height < min_v_pixbuf_size)
|
|
height = min_v_pixbuf_size;
|
|
if (height > max_v_pixbuf_size)
|
|
height = max_v_pixbuf_size;
|
|
|
|
int index = height - 1;
|
|
|
|
if (v_pixbuf_cache == 0) {
|
|
v_pixbuf_cache = (Glib::RefPtr<Gdk::Pixbuf>*) malloc(sizeof(Glib::RefPtr<Gdk::Pixbuf>) * max_v_pixbuf_size);
|
|
memset(v_pixbuf_cache,0,sizeof(Glib::RefPtr<Gdk::Pixbuf>) * max_v_pixbuf_size);
|
|
}
|
|
Glib::RefPtr<Gdk::Pixbuf> ret = v_pixbuf_cache[index];
|
|
if (ret)
|
|
return ret;
|
|
|
|
guint8* data;
|
|
|
|
data = (guint8*) malloc(width*height * 3);
|
|
|
|
guint8 r,g,b;
|
|
r=0;
|
|
g=255;
|
|
b=0;
|
|
|
|
// fake log calculation copied from log_meter.h
|
|
// actual calculation:
|
|
// log_meter(0.0f) =
|
|
// def = (0.0f + 20.0f) * 2.5f + 50f
|
|
// return def / 115.0f
|
|
int knee = (int)floor((float)height * 100.0f / 115.0f);
|
|
|
|
int y;
|
|
|
|
for (y = 0; y < knee / 2; y++) {
|
|
|
|
r = (guint8)floor(255.0 * (float)y/(float)(knee / 2));
|
|
|
|
for (int x = 0; x < width; x++) {
|
|
data[ (x+(height-y-1)*width) * 3 + 0 ] = r;
|
|
data[ (x+(height-y-1)*width) * 3 + 1 ] = g;
|
|
data[ (x+(height-y-1)*width) * 3 + 2 ] = b;
|
|
}
|
|
}
|
|
|
|
for (; y < knee; y++) {
|
|
|
|
g = 255 - (guint8)floor(170.0 * (float)(y - knee/ 2)/(float)(knee / 2));
|
|
|
|
for (int x = 0; x < width; x++) {
|
|
data[ (x+(height-y-1)*width) * 3 + 0 ] = r;
|
|
data[ (x+(height-y-1)*width) * 3 + 1 ] = g;
|
|
data[ (x+(height-y-1)*width) * 3 + 2 ] = b;
|
|
}
|
|
}
|
|
|
|
r=255;
|
|
g=0;
|
|
b=0;
|
|
for (; y < height; y++) {
|
|
for (int x = 0; x < width; x++) {
|
|
data[ (x+(height-y-1)*width) * 3 + 0 ] = r;
|
|
data[ (x+(height-y-1)*width) * 3 + 1 ] = g;
|
|
data[ (x+(height-y-1)*width) * 3 + 2 ] = b;
|
|
}
|
|
}
|
|
|
|
ret = Pixbuf::create_from_data(data, COLORSPACE_RGB, false, 8, width, height, width * 3);
|
|
v_pixbuf_cache[index] = ret;
|
|
|
|
return ret;
|
|
}
|
|
|
|
Glib::RefPtr<Gdk::Pixbuf> FastMeter::request_horizontal_meter(int width, int height)
|
|
{
|
|
if (width < min_h_pixbuf_size)
|
|
width = min_h_pixbuf_size;
|
|
if (width > max_h_pixbuf_size)
|
|
width = max_h_pixbuf_size;
|
|
|
|
int index = width - 1;
|
|
|
|
if (h_pixbuf_cache == 0) {
|
|
h_pixbuf_cache = (Glib::RefPtr<Gdk::Pixbuf>*) malloc(sizeof(Glib::RefPtr<Gdk::Pixbuf>) * max_h_pixbuf_size);
|
|
memset(h_pixbuf_cache,0,sizeof(Glib::RefPtr<Gdk::Pixbuf>) * max_h_pixbuf_size);
|
|
}
|
|
Glib::RefPtr<Gdk::Pixbuf> ret = h_pixbuf_cache[index];
|
|
if (ret)
|
|
return ret;
|
|
|
|
guint8* data;
|
|
|
|
data = (guint8*) malloc(width*height * 3);
|
|
|
|
guint8 r,g,b;
|
|
r=0;
|
|
g=255;
|
|
b=0;
|
|
|
|
// fake log calculation copied from log_meter.h
|
|
// actual calculation:
|
|
// log_meter(0.0f) =
|
|
// def = (0.0f + 20.0f) * 2.5f + 50f
|
|
// return def / 115.0f
|
|
int knee = (int)floor((float)width * 100.0f / 115.0f);
|
|
|
|
int x;
|
|
|
|
for (x = 0; x < knee / 2; x++) {
|
|
|
|
r = (guint8)floor(255.0 * (float)x/(float)(knee / 2));
|
|
|
|
for (int y = 0; y < height; y++) {
|
|
data[ (x+(height-y-1)*width) * 3 + 0 ] = r;
|
|
data[ (x+(height-y-1)*width) * 3 + 1 ] = g;
|
|
data[ (x+(height-y-1)*width) * 3 + 2 ] = b;
|
|
}
|
|
}
|
|
|
|
for (; x < knee; x++) {
|
|
|
|
g = 255 - (guint8)floor(170.0 * (float)(x - knee/ 2)/(float)(knee / 2));
|
|
|
|
for (int y = 0; y < height; y++) {
|
|
data[ (x+(height-y-1)*width) * 3 + 0 ] = r;
|
|
data[ (x+(height-y-1)*width) * 3 + 1 ] = g;
|
|
data[ (x+(height-y-1)*width) * 3 + 2 ] = b;
|
|
}
|
|
}
|
|
|
|
r=255;
|
|
g=0;
|
|
b=0;
|
|
for (; x < width; x++) {
|
|
for (int y = 0; y < height; y++) {
|
|
data[ (x+(height-y-1)*width) * 3 + 0 ] = r;
|
|
data[ (x+(height-y-1)*width) * 3 + 1 ] = g;
|
|
data[ (x+(height-y-1)*width) * 3 + 2 ] = b;
|
|
}
|
|
}
|
|
|
|
ret = Pixbuf::create_from_data(data, COLORSPACE_RGB, false, 8, width, height, width * 3);
|
|
h_pixbuf_cache[index] = ret;
|
|
|
|
return ret;
|
|
}
|
|
|
|
FastMeter::~FastMeter ()
|
|
{
|
|
}
|
|
|
|
void
|
|
FastMeter::set_hold_count (long val)
|
|
{
|
|
if (val < 1) {
|
|
val = 1;
|
|
}
|
|
|
|
hold_cnt = val;
|
|
hold_state = 0;
|
|
current_peak = 0;
|
|
|
|
queue_draw ();
|
|
}
|
|
|
|
void
|
|
FastMeter::on_size_request (GtkRequisition* req)
|
|
{
|
|
if (orientation == Vertical) {
|
|
|
|
req->height = request_height;
|
|
req->height = max(req->height, min_v_pixbuf_size);
|
|
req->height = min(req->height, max_v_pixbuf_size);
|
|
|
|
req->width = request_width;
|
|
|
|
} else {
|
|
|
|
req->width = request_width;
|
|
req->width = max(req->width, min_h_pixbuf_size);
|
|
req->width = min(req->width, max_h_pixbuf_size);
|
|
|
|
req->height = request_height;
|
|
}
|
|
|
|
}
|
|
|
|
void
|
|
FastMeter::on_size_allocate (Gtk::Allocation &alloc)
|
|
{
|
|
if (orientation == Vertical) {
|
|
|
|
if (alloc.get_width() != request_width) {
|
|
alloc.set_width (request_width);
|
|
}
|
|
|
|
int h = alloc.get_height();
|
|
h = max(h, min_v_pixbuf_size);
|
|
h = min(h, max_v_pixbuf_size);
|
|
|
|
if ( h != alloc.get_height())
|
|
alloc.set_height(h);
|
|
|
|
if (pixheight != h) {
|
|
pixbuf = request_vertical_meter(request_width, h);
|
|
}
|
|
|
|
} else {
|
|
|
|
if (alloc.get_height() != request_height) {
|
|
alloc.set_height(request_height);
|
|
}
|
|
|
|
int w = alloc.get_width();
|
|
w = max(w, min_h_pixbuf_size);
|
|
w = min(w, max_h_pixbuf_size);
|
|
|
|
if ( w != alloc.get_width())
|
|
alloc.set_width(w);
|
|
|
|
if (pixwidth != w) {
|
|
pixbuf = request_horizontal_meter(w, request_height);
|
|
}
|
|
}
|
|
|
|
pixheight = pixbuf->get_height();
|
|
pixwidth = pixbuf->get_width();
|
|
|
|
DrawingArea::on_size_allocate(alloc);
|
|
}
|
|
|
|
bool
|
|
FastMeter::on_expose_event (GdkEventExpose* ev)
|
|
{
|
|
if (orientation == Vertical) {
|
|
return vertical_expose (ev);
|
|
} else {
|
|
return horizontal_expose (ev);
|
|
}
|
|
}
|
|
|
|
bool
|
|
FastMeter::vertical_expose (GdkEventExpose* ev)
|
|
{
|
|
gint top_of_meter;
|
|
GdkRectangle intersection;
|
|
GdkRectangle background;
|
|
|
|
top_of_meter = (gint) floor (pixheight * current_level);
|
|
pixrect.height = top_of_meter;
|
|
|
|
background.x = 0;
|
|
background.y = 0;
|
|
background.width = pixrect.width;
|
|
background.height = pixheight - top_of_meter;
|
|
|
|
if (gdk_rectangle_intersect (&background, &ev->area, &intersection)) {
|
|
get_window()->draw_rectangle (get_style()->get_black_gc(), true,
|
|
intersection.x, intersection.y,
|
|
intersection.width, intersection.height);
|
|
}
|
|
|
|
if (gdk_rectangle_intersect (&pixrect, &ev->area, &intersection)) {
|
|
// draw the part of the meter image that we need. the area we draw is bounded "in reverse" (top->bottom)
|
|
get_window()->draw_pixbuf(get_style()->get_fg_gc(get_state()), pixbuf,
|
|
intersection.x, pixheight - top_of_meter,
|
|
intersection.x, pixheight - top_of_meter,
|
|
intersection.width, intersection.height,
|
|
Gdk::RGB_DITHER_NONE, 0, 0);
|
|
}
|
|
|
|
// draw peak bar
|
|
if (hold_state && intersection.width > 0) {
|
|
gint y = pixheight - (gint) floor (pixheight * current_peak);
|
|
int h = min(3, pixheight - y);
|
|
|
|
get_window()->draw_pixbuf (get_style()->get_fg_gc(get_state()), pixbuf,
|
|
intersection.x, y,
|
|
intersection.x, y,
|
|
intersection.width, h,
|
|
Gdk::RGB_DITHER_NONE, 0, 0);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
bool
|
|
FastMeter::horizontal_expose (GdkEventExpose* ev)
|
|
{
|
|
gint right_of_meter;
|
|
GdkRectangle intersection;
|
|
GdkRectangle background;
|
|
|
|
right_of_meter = (gint) floor (pixwidth * current_level);
|
|
pixrect.width = right_of_meter;
|
|
|
|
background.x = 0;
|
|
background.y = 0;
|
|
background.width = pixwidth - right_of_meter;
|
|
background.height = pixrect.height;
|
|
|
|
if (gdk_rectangle_intersect (&background, &ev->area, &intersection)) {
|
|
get_window()->draw_rectangle (get_style()->get_black_gc(), true,
|
|
intersection.x + right_of_meter, intersection.y,
|
|
intersection.width, intersection.height);
|
|
}
|
|
|
|
if (gdk_rectangle_intersect (&pixrect, &ev->area, &intersection)) {
|
|
// draw the part of the meter image that we need. the area we draw is bounded "in reverse" (top->bottom)
|
|
get_window()->draw_pixbuf(get_style()->get_fg_gc(get_state()), pixbuf,
|
|
intersection.x, intersection.y,
|
|
intersection.x, intersection.y,
|
|
intersection.width, intersection.height,
|
|
Gdk::RGB_DITHER_NONE, 0, 0);
|
|
}
|
|
|
|
// draw peak bar
|
|
// XXX: peaks don't work properly
|
|
/*
|
|
if (hold_state && intersection.height > 0) {
|
|
gint x = (gint) floor(pixwidth * current_peak);
|
|
|
|
get_window()->draw_pixbuf (get_style()->get_fg_gc(get_state()), pixbuf,
|
|
x, intersection.y,
|
|
x, intersection.y,
|
|
3, intersection.height,
|
|
Gdk::RGB_DITHER_NONE, 0, 0);
|
|
}
|
|
*/
|
|
|
|
return true;
|
|
}
|
|
|
|
void
|
|
FastMeter::set (float lvl)
|
|
{
|
|
current_level = lvl;
|
|
|
|
if (lvl > current_peak) {
|
|
current_peak = lvl;
|
|
hold_state = hold_cnt;
|
|
}
|
|
|
|
if (hold_state > 0) {
|
|
if (--hold_state == 0) {
|
|
current_peak = lvl;
|
|
}
|
|
}
|
|
|
|
queue_draw ();
|
|
}
|
|
|
|
void
|
|
FastMeter::clear ()
|
|
{
|
|
current_level = 0;
|
|
current_peak = 0;
|
|
hold_state = 0;
|
|
queue_draw ();
|
|
}
|