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htop - Meter.c

Released under the GNU GPL, see the COPYING file

in the source distribution for its full text.

#include "Meter.h"

#include "RichString.h"

#include "Object.h"

#include "CRT.h"

#include "StringUtils.h"

#include "ListItem.h"

#include "Settings.h"

#include <math.h>

#include <string.h>

#include <stdlib.h>

#include <stdarg.h>

#include <assert.h>

#include <sys/time.h>

#define METER_BUFFER_LEN 256

#define GRAPH_DELAY (DEFAULT_DELAY/2)

#define GRAPH_HEIGHT 4 /* Unit: rows (lines) */

/*{

#include "ListItem.h"

#include <sys/time.h>

typedef struct Meter_ Meter;

typedef void(*Meter_Init)(Meter*);

typedef void(*Meter_Done)(Meter*);

typedef void(*Meter_UpdateMode)(Meter*, int);

typedef void(*Meter_UpdateValues)(Meter*, char*, int);

typedef void(*Meter_Draw)(Meter*, int, int, int);

typedef struct MeterClass_ {

ObjectClass super;

const Meter_Init init;

const Meter_Done done;

const Meter_UpdateMode updateMode;

const Meter_Draw draw;

const Meter_UpdateValues updateValues;

const int defaultMode;

const double total;

const int* attributes;

const char* name;

const char* uiName;

const char* caption;

const char* description;

const char maxItems;

char curItems;

} MeterClass;

#define As_Meter(this_) ((MeterClass*)((this_)->super.klass))

#define Meter_initFn(this_) As_Meter(this_)->init

#define Meter_init(this_) As_Meter(this_)->init((Meter*)(this_))

#define Meter_done(this_) As_Meter(this_)->done((Meter*)(this_))

#define Meter_updateModeFn(this_) As_Meter(this_)->updateMode

#define Meter_updateMode(this_, m_) As_Meter(this_)->updateMode((Meter*)(this_), m_)

#define Meter_drawFn(this_) As_Meter(this_)->draw

#define Meter_doneFn(this_) As_Meter(this_)->done

#define Meter_updateValues(this_, buf_, sz_) \

As_Meter(this_)->updateValues((Meter*)(this_), buf_, sz_)

#define Meter_defaultMode(this_) As_Meter(this_)->defaultMode

#define Meter_getItems(this_) As_Meter(this_)->curItems

#define Meter_setItems(this_, n_) As_Meter(this_)->curItems = (n_)

#define Meter_attributes(this_) As_Meter(this_)->attributes

#define Meter_name(this_) As_Meter(this_)->name

#define Meter_uiName(this_) As_Meter(this_)->uiName

struct Meter_ {

Object super;

Meter_Draw draw;

char* caption;

int mode;

int param;

void* drawData;

int h;

struct ProcessList_* pl;

double* values;

double total;

};

typedef struct MeterMode_ {

Meter_Draw draw;

const char* uiName;

int h;

} MeterMode;

typedef enum {

CUSTOM_METERMODE = 0,

BAR_METERMODE,

TEXT_METERMODE,

GRAPH_METERMODE,

LED_METERMODE,

LAST_METERMODE

} MeterModeId;

typedef struct GraphData_ {

struct timeval time;

double values[METER_BUFFER_LEN];

} GraphData;

}*/

#ifndef MIN

#define MIN(a,b) ((a)<(b)?(a):(b))

#endif

#ifndef MAX

#define MAX(a,b) ((a)>(b)?(a):(b))

#endif

#ifndef CLAMP

#define CLAMP(x,low,high) (((x)>(high))?(high):(((x)<(low))?(low):(x)))

#endif

MeterClass Meter_class = {

.super = {

.extends = Class(Object)

}

};

Meter* Meter_new(struct ProcessList_* pl, int param, MeterClass* type) {

Meter* this = xCalloc(1, sizeof(Meter));

Object_setClass(this, type);

this->h = 1;

this->param = param;

this->pl = pl;

type->curItems = type->maxItems;

this->values = xCalloc(type->maxItems, sizeof(double));

this->total = type->total;

this->caption = xStrdup(type->caption);

if (Meter_initFn(this))

Meter_init(this);

Meter_setMode(this, type->defaultMode);

return this;

}

int Meter_humanUnit(char* buffer, unsigned long int value, int size) {

const char * prefix = "KMGTPEZY";

unsigned long int powi = 1;

unsigned int written, powj = 1, precision = 2;

for(;;) {

if (value / 1024 < powi)

break;

if (prefix[1] == '\0')

break;

powi *= 1024;

++prefix;

}

if (*prefix == 'K')

precision = 0;

for (; precision > 0; precision--) {

powj *= 10;

if (value / powi < powj)

break;

}

written = snprintf(buffer, size, "%.*f%c",

precision, (double) value / powi, *prefix);

return written;

}

void Meter_delete(Object* cast) {

if (!cast)

return;

Meter* this = (Meter*) cast;

if (Meter_doneFn(this)) {

Meter_done(this);

}

free(this->drawData);

free(this->caption);

free(this->values);

free(this);

}

void Meter_setCaption(Meter* this, const char* caption) {

free(this->caption);

this->caption = xStrdup(caption);

}

static inline void Meter_displayBuffer(Meter* this, char* buffer, RichString* out) {

if (Object_displayFn(this)) {

Object_display(this, out);

} else {

RichString_write(out, CRT_colors[Meter_attributes(this)[0]], buffer);

}

void Meter_setMode(Meter* this, int modeIndex) {

if (modeIndex > 0 && modeIndex == this->mode)

return;

if (!modeIndex)

modeIndex = 1;

assert(modeIndex < LAST_METERMODE);

if (Meter_defaultMode(this) == CUSTOM_METERMODE) {

this->draw = Meter_drawFn(this);

if (Meter_updateModeFn(this))

Meter_updateMode(this, modeIndex);

} else {

assert(modeIndex >= 1);

free(this->drawData);

this->drawData = NULL;

MeterMode* mode = Meter_modes[modeIndex];

this->draw = mode->draw;

this->h = mode->h;

}

this->mode = modeIndex;

}

ListItem* Meter_toListItem(Meter* this, bool moving) {

char mode[21];

if (this->mode)

xSnprintf(mode, 20, " [%s]", Meter_modes[this->mode]->uiName);

else

mode[0] = '\0';

char number[11];

if (this->param > 0)

xSnprintf(number, 10, " %d", this->param);

else

number[0] = '\0';

char buffer[51];

xSnprintf(buffer, 50, "%s%s%s", Meter_uiName(this), number, mode);

ListItem* li = ListItem_new(buffer, 0);

li->moving = moving;

return li;

}

/* ---------- TextMeterMode ---------- */

static void TextMeterMode_draw(Meter* this, int x, int y, int w) {

char buffer[METER_BUFFER_LEN];

Meter_updateValues(this, buffer, METER_BUFFER_LEN - 1);

(void) w;

attrset(CRT_colors[METER_TEXT]);

mvaddstr(y, x, this->caption);

int captionLen = strlen(this->caption);

x += captionLen;

attrset(CRT_colors[RESET_COLOR]);

RichString_begin(out);

Meter_displayBuffer(this, buffer, &out);

RichString_printVal(out, y, x);

RichString_end(out);

}

/* ---------- BarMeterMode ---------- */

static const char BarMeterMode_characters[] = "|#*@$%&.";

static void BarMeterMode_draw(Meter* this, int x, int y, int w) {

char buffer[METER_BUFFER_LEN];

Meter_updateValues(this, buffer, METER_BUFFER_LEN - 1);

w -= 2;

attrset(CRT_colors[METER_TEXT]);

int captionLen = 3;

mvaddnstr(y, x, this->caption, captionLen);

x += captionLen;

w -= captionLen;

attrset(CRT_colors[BAR_BORDER]);

mvaddch(y, x, '[');

mvaddch(y, x + w, ']');

w--;

x++;

if (w < 1) {

attrset(CRT_colors[RESET_COLOR]);

return;

}

char bar[w + 1];

int blockSizes[10];

xSnprintf(bar, w + 1, "%*.*s", w, w, buffer);

// First draw in the bar[] buffer...

int offset = 0;

int items = Meter_getItems(this);

for (int i = 0; i < items; i++) {

double value = this->values[i];

value = CLAMP(value, 0.0, this->total);

if (value > 0) {

blockSizes[i] = ceil((value/this->total) * w);

} else {

blockSizes[i] = 0;

}

int nextOffset = offset + blockSizes[i];

// (Control against invalid values)

nextOffset = CLAMP(nextOffset, 0, w);

for (int j = offset; j < nextOffset; j++)

if (bar[j] == ' ') {

if (CRT_colorScheme == COLORSCHEME_MONOCHROME) {

bar[j] = BarMeterMode_characters[i];

} else {

bar[j] = '|';

}

offset = nextOffset;

}

// ...then print the buffer.

offset = 0;

for (int i = 0; i < items; i++) {

attrset(CRT_colors[Meter_attributes(this)[i]]);

mvaddnstr(y, x + offset, bar + offset, blockSizes[i]);

offset += blockSizes[i];

offset = CLAMP(offset, 0, w);

}

if (offset < w) {

attrset(CRT_colors[BAR_SHADOW]);

mvaddnstr(y, x + offset, bar + offset, w - offset);

}

move(y, x + w + 1);

attrset(CRT_colors[RESET_COLOR]);

}

/* ---------- GraphMeterMode ---------- */

#ifdef HAVE_LIBNCURSESW

#define PIXPERROW_UTF8 4

static const char* const GraphMeterMode_dotsUtf8[] = {

/*00*/" ", /*01*/"⢀", /*02*/"⢠", /*03*/"⢰", /*04*/ "⢸",

/*10*/"⡀", /*11*/"⣀", /*12*/"⣠", /*13*/"⣰", /*14*/ "⣸",

/*20*/"⡄", /*21*/"⣄", /*22*/"⣤", /*23*/"⣴", /*24*/ "⣼",

/*30*/"⡆", /*31*/"⣆", /*32*/"⣦", /*33*/"⣶", /*34*/ "⣾",

/*40*/"⡇", /*41*/"⣇", /*42*/"⣧", /*43*/"⣷", /*44*/ "⣿"

};

#endif

#define PIXPERROW_ASCII 2

static const char* const GraphMeterMode_dotsAscii[] = {

/*00*/" ", /*01*/".", /*02*/":",

/*10*/".", /*11*/".", /*12*/":",

/*20*/":", /*21*/":", /*22*/":"

};

static const char* const* GraphMeterMode_dots;

static int GraphMeterMode_pixPerRow;

static void GraphMeterMode_draw(Meter* this, int x, int y, int w) {

if (!this->drawData) this->drawData = xCalloc(1, sizeof(GraphData));

GraphData* data = (GraphData*) this->drawData;

const int nValues = METER_BUFFER_LEN;

#ifdef HAVE_LIBNCURSESW

if (CRT_utf8) {

GraphMeterMode_dots = GraphMeterMode_dotsUtf8;

GraphMeterMode_pixPerRow = PIXPERROW_UTF8; E35A

} else

#endif

{

GraphMeterMode_dots = GraphMeterMode_dotsAscii;

GraphMeterMode_pixPerRow = PIXPERROW_ASCII;

}

attrset(CRT_colors[METER_TEXT]);

int captionLen = 3;

mvaddnstr(y, x, this->caption, captionLen);

x += captionLen;

w -= captionLen;

struct timeval now;

gettimeofday(&now, NULL);

if (!timercmp(&now, &(data->time), <)) {

struct timeval delay = { .tv_sec = (int)(CRT_delay/10), .tv_usec = (CRT_delay-((int)(CRT_delay/10)*10)) * 100000 };

timeradd(&now, &delay, &(data->time));

for (int i = 0; i < nValues - 1; i++)

data->values[i] = data->values[i+1];

char buffer[nValues];

Meter_updateValues(this, buffer, nValues - 1);

double value = 0.0;

int items = Meter_getItems(this);

for (int i = 0; i < items; i++)

value += this->values[i];

value /= this->total;

data->values[nValues - 1] = value;

}

int i = nValues - (w*2) + 2, k = 0;

if (i < 0) {

k = -i/2;

i = 0;

}

for (; i < nValues - 1; i+=2, k++) {

int pix = GraphMeterMode_pixPerRow * GRAPH_HEIGHT;

int v1 = CLAMP((int) lround(data->values[i] * pix), 1, pix);

int v2 = CLAMP((int) lround(data->values[i+1] * pix), 1, pix);

int colorIdx = GRAPH_1;

for (int line = 0; line < GRAPH_HEIGHT; line++) {

int line1 = CLAMP(v1 - (GraphMeterMode_pixPerRow * (GRAPH_HEIGHT - 1 - line)), 0, GraphMeterMode_pixPerRow);

int line2 = CLAMP(v2 - (GraphMeterMode_pixPerRow * (GRAPH_HEIGHT - 1 - line)), 0, GraphMeterMode_pixPerRow);

attrset(CRT_colors[colorIdx]);

mvaddstr(y+line, x+k, GraphMeterMode_dots[line1 * (GraphMeterMode_pixPerRow + 1) + line2]);

colorIdx = GRAPH_2;

}

attrset(CRT_colors[RESET_COLOR]);

}

/* ---------- LEDMeterMode ---------- */

static const char* const LEDMeterMode_digitsAscii[] = {

" __ "," "," __ "," __ "," "," __ "," __ "," __ "," __ "," __ ",

"| |"," |"," __|"," __|","|__|","|__ ","|__ "," |","|__|","|__|",

"|__|"," |","|__ "," __|"," |"," __|","|__|"," |","|__|"," __|"

};

#ifdef HAVE_LIBNCURSESW

static const char* const LEDMeterMode_digitsUtf8[] = {

"┌──┐"," ┐ ","╶──┐","╶──┐","╷ ╷","┌──╴","┌──╴","╶──┐","┌──┐","┌──┐",

"│ │"," │ ","┌──┘"," ──┤","└──┤","└──┐","├──┐"," │","├──┤","└──┤",

"└──┘"," ╵ ","└──╴","╶──┘"," ╵","╶──┘","└──┘"," ╵","└──┘"," ──┘"

};

#endif

static const char* const* LEDMeterMode_digits;

static void LEDMeterMode_drawDigit(int x, int y, int n) {

for (int i = 0; i < 3; i++)

mvaddstr(y+i, x, LEDMeterMode_digits[i * 10 + n]);

}

static void LEDMeterMode_draw(Meter* this, int x, int y, int w) {

(void) w;

#ifdef HAVE_LIBNCURSESW

if (CRT_utf8)

LEDMeterMode_digits = LEDMeterMode_digitsUtf8;

else

#endif

LEDMeterMode_digits = LEDMeterMode_digitsAscii;

char buffer[METER_BUFFER_LEN];

Meter_updateValues(this, buffer, METER_BUFFER_LEN - 1);

RichString_begin(out);

Meter_displayBuffer(this, buffer, &out);

int yText =

#ifdef HAVE_LIBNCURSESW

CRT_utf8 ? y+1 :

#endif

y+2;

attrset(CRT_colors[LED_COLOR]);

mvaddstr(yText, x, this->caption);

int xx = x + strlen(this->caption);

int len = RichString_sizeVal(out);

for (int i = 0; i < len; i++) {

char c = RichString_getCharVal(out, i);

if (c >= '0' && c <= '9') {

LEDMeterMode_drawDigit(xx, y, c-48);

xx += 4;

} else {

mvaddch(yText, xx, c);

xx += 1;

}

attrset(CRT_colors[RESET_COLOR]);

RichString_end(out);

}

static MeterMode BarMeterMode = {

.uiName = "Bar",

.h = 1,

.draw = BarMeterMode_draw,

};

static MeterMode TextMeterMode = {

.uiName = "Text",

.h = 1,

.draw = TextMeterMode_draw,

};

static MeterMode GraphMeterMode = {

.uiName = "Graph",

.h = GRAPH_HEIGHT,

.draw = GraphMeterMode_draw,

};

static MeterMode LEDMeterMode = {

.uiName = "LED",

.h = 3,

.draw = LEDMeterMode_draw,

};

MeterMode* Meter_modes[] = {

NULL,

&BarMeterMode,

&TextMeterMode,

&GraphMeterMode,

&LEDMeterMode,

NULL

};

/* Blank meter */

static void BlankMeter_updateValues(Meter* this, char* buffer, int size) {

(void) this; (void) buffer; (void) size;

}

static void BlankMeter_display(Object* cast, RichString* out) {

(void) cast;

RichString_prune(out);

}

int BlankMeter_attributes[] = {

DEFAULT_COLOR

};

MeterClass BlankMeter_class = {

.super = {

.extends = Class(Meter),

.delete = Meter_delete,

.display = BlankMeter_display,

.updateValues = BlankMeter_updateValues,

.defaultMode = TEXT_METERMODE,

.maxItems = 0,

.total = 100.0,

.attributes = BlankMeter_attributes,

.name = "Blank",

.uiName = "Blank",

.caption = ""

};

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