mirror of
https://github.com/edeproject/ede.git
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98 lines
2.3 KiB
C++
98 lines
2.3 KiB
C++
#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <FL/Fl.H>
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#include <FL/fl_draw.H>
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#include <edelib/Color.h>
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#include <edelib/Missing.h>
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#include "Applet.h"
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#include "MemMonitor.h"
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EDELIB_NS_USING(color_rgb_to_fltk)
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#define UPDATE_INTERVAL .5f
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#define STR_CMP(first, second, n) (strncmp(first, second, n) == 0)
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static int height_from_perc(int perc, int h) {
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return (perc * h) / 100;
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}
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static long get_number(const char *ln) {
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char *s = edelib_strndup(ln, 128);
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int i = 1;
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for(char *p = strtok(s, " "); p; p = strtok(NULL, " "), i++) {
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if(i == 2)
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return atol(p);
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}
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free(s);
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return 0;
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}
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static void mem_timeout_cb(void *d) {
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((MemMonitor*)d)->update_status();
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Fl::repeat_timeout(UPDATE_INTERVAL, mem_timeout_cb, d);
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}
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MemMonitor::MemMonitor() : Fl_Box(0, 0, 45, 25), mem_usedp(0), swap_usedp(0) {
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box(FL_THIN_DOWN_BOX);
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Fl::add_timeout(UPDATE_INTERVAL, mem_timeout_cb, this);
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}
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void MemMonitor::update_status(void) {
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FILE *fd = fopen("/proc/meminfo", "r");
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if(!fd) return;
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long mem_total, mem_free, swap_total, swap_free;
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mem_total = mem_free = swap_total = swap_free = 0;
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char buf[128];
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while(fgets(buf, 128, fd) != 0) {
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if(STR_CMP(buf, "MemTotal:", 9))
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mem_total = get_number(buf);
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else if(STR_CMP(buf, "MemFree:", 8))
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mem_free = get_number(buf);
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else if(STR_CMP(buf, "SwapTotal:", 10))
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swap_total = get_number(buf);
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else if(STR_CMP(buf, "SwapFree:", 9))
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swap_free = get_number(buf);
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}
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fclose(fd);
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mem_usedp = 100 - (int)(((float)mem_free / (float)mem_total) * 100);
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swap_usedp = 100 - (int)(((float)swap_total / (float)swap_free) * 100);
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static char tip[100];
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snprintf(tip, sizeof(tip), "Memory used: %i%%\nSwap used: %i%%", mem_usedp, swap_usedp);
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tooltip(tip);
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redraw();
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}
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void MemMonitor::draw(void) {
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draw_box();
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int W, W2, H, X, Y, mh, sh;
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W = w() - Fl::box_dw(box());
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H = h() - Fl::box_dh(box());
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X = x() + Fl::box_dx(box());
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Y = y() + Fl::box_dy(box());
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W2 = W / 2;
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mh = height_from_perc(mem_usedp, H);
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sh = height_from_perc(swap_usedp, H);
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fl_rectf(X, Y + H - mh, W2, mh, color_rgb_to_fltk(166, 48, 48));
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fl_rectf(X + W2, Y + H - sh, W2, sh, color_rgb_to_fltk(54, 136, 79));
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}
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EDE_PANEL_APPLET_EXPORT (
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MemMonitor,
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EDE_PANEL_APPLET_OPTION_ALIGN_RIGHT,
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"Memory monitor",
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"0.1",
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"empty",
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"Sanel Zukan"
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)
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