ede/ede-panel/applets/mem-monitor/MemMonitor.cpp

135 lines
3.4 KiB
C++

/*
* $Id: Panel.cpp 3512 2013-01-09 13:45:49Z karijes $
*
* Copyright (C) 2012-2013 Sanel Zukan
*
* 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 <FL/Fl_Box.H>
#include "Applet.h"
#include <edelib/Nls.h>
#if defined(linux2)
#include <sys/sysinfo.h>
#include <stdio.h>
#include <stdlib.h>
#include <FL/Fl.H>
#include <FL/fl_draw.H>
#include <edelib/Color.h>
#include <edelib/Missing.h>
EDELIB_NS_USING(color_rgb_to_fltk)
#define UPDATE_INTERVAL 1.0f
#define STR_CMP(first, second, n) (strncmp(first, second, n) == 0)
class MemMonitor : public Fl_Box {
private:
int mem_usedp, swap_usedp;
public:
MemMonitor() : Fl_Box(0, 0, 45, 25), mem_usedp(0), swap_usedp(0) {
box(FL_THIN_DOWN_BOX);
}
void update_status(void);
void draw(void);
int handle(int e);
};
inline int height_from_perc(int perc, int h) {
return (perc * h) / 100;
}
static void mem_timeout_cb(void *d) {
((MemMonitor*)d)->update_status();
Fl::repeat_timeout(UPDATE_INTERVAL, mem_timeout_cb, d);
}
void MemMonitor::update_status(void) {
struct sysinfo sys;
if(sysinfo(&sys) != 0) return;
long mem_total, mem_free, swap_total, swap_free;
mem_total = (float)sys.totalram * (float)sys.mem_unit / 1048576.0f;
mem_free = (float)sys.freeram * (float)sys.mem_unit / 1048576.0f;
swap_total = (float)sys.totalswap * (float)sys.mem_unit / 1048576.0f;
swap_free = (float)sys.freeswap * (float)sys.mem_unit / 1048576.0f;
mem_usedp = 100 - (int)(((float)mem_free / (float)mem_total) * 100);
swap_usedp = 100 - (int)(((float)swap_free / (float)swap_total) * 100);
static char tip[100];
snprintf(tip, sizeof(tip), _("Memory used: %i%%\nSwap used: %i%%"), mem_usedp, swap_usedp);
tooltip(tip);
redraw();
}
void MemMonitor::draw(void) {
draw_box();
int W, W2, H, X, Y, mh, sh;
W = w() - Fl::box_dw(box());
H = h() - Fl::box_dh(box());
X = x() + Fl::box_dx(box());
Y = y() + Fl::box_dy(box());
W2 = W / 2;
mh = height_from_perc(mem_usedp, H);
sh = height_from_perc(swap_usedp, H);
fl_rectf(X, Y + H - mh, W2, mh, (Fl_Color)color_rgb_to_fltk(166, 48, 48));
fl_rectf(X + W2, Y + H - sh, W2, sh, (Fl_Color)color_rgb_to_fltk(54, 136, 79));
}
int MemMonitor::handle(int e) {
switch(e) {
case FL_SHOW: {
int ret = Fl_Box::handle(e);
Fl::add_timeout(UPDATE_INTERVAL, mem_timeout_cb, this);
return ret;
}
case FL_HIDE:
Fl::remove_timeout(mem_timeout_cb);
/* fallthrough */
}
return Fl_Box::handle(e);
}
#else
class MemMonitor : public Fl_Box {
public:
MemMonitor() : Fl_Box(0, 0, 45, 25) {
box(FL_THIN_DOWN_BOX);
label("n/a");
tooltip(_("Memory information not available for this platform"));
}
};
#endif /* linux */
EDE_PANEL_APPLET_EXPORT (
MemMonitor,
EDE_PANEL_APPLET_OPTION_ALIGN_RIGHT,
"Memory monitor",
"0.2",
"empty",
"Sanel Zukan"
)