aboutsummaryrefslogtreecommitdiffstats
path: root/Meter.c
blob: 8df8517084f37aaa069402ffaaffff8612554f79 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
/*
htop - Meter.c
(C) 2004-2011 Hisham H. Muhammad
Released under the GNU GPLv2+, see the COPYING file
in the source distribution for its full text.
*/

#include "config.h" // IWYU pragma: keep

#include "Meter.h"

#include <assert.h>
#include <math.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>

#include "CRT.h"
#include "Macros.h"
#include "Object.h"
#include "ProvideCurses.h"
#include "RichString.h"
#include "Settings.h"
#include "XUtils.h"


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

const MeterClass Meter_class = {
   .super = {
      .extends = Class(Object)
   }
};

Meter* Meter_new(const struct ProcessList_* pl, unsigned int param, const MeterClass* type) {
   Meter* this = xCalloc(1, sizeof(Meter));
   Object_setClass(this, type);
   this->h = 1;
   this->param = param;
   this->pl = pl;
   this->curItems = type->maxItems;
   this->curAttributes = NULL;
   this->values = type->maxItems ? xCalloc(type->maxItems, sizeof(double)) : NULL;
   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, size_t size) {
   const char* prefix = "KMGTPEZY";
   unsigned long int powi = 1;
   unsigned int 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;
   }

   return snprintf(buffer, size, "%.*f%c", precision, (double) value / powi, *prefix);
}

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_and_xStrdup(&this->caption, caption);
}

static inline void Meter_displayBuffer(const Meter* this, RichString* out) {
   if (Object_displayFn(this)) {
      Object_display(this, out);
   } else {
      RichString_writeWide(out, CRT_colors[Meter_attributes(this)[0]], this->txtBuffer);
   }
}

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;

      const MeterMode* mode = Meter_modes[modeIndex];
      this->draw = mode->draw;
      this->h = mode->h;
   }
   this->mode = modeIndex;
}

ListItem* Meter_toListItem(const Meter* this, bool moving) {
   char mode[20];
   if (this->mode) {
      xSnprintf(mode, sizeof(mode), " [%s]", Meter_modes[this->mode]->uiName);
   } else {
      mode[0] = '\0';
   }
   char name[32];
   if (Meter_getUiNameFn(this))
      Meter_getUiName(this, name, sizeof(name));
   else
      xSnprintf(name, sizeof(name), "%s", Meter_uiName(this));
   char buffer[50];
   xSnprintf(buffer, sizeof(buffer), "%s%s", name, 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) {
   const char* caption = Meter_getCaption(this);
   attrset(CRT_colors[METER_TEXT]);
   mvaddnstr(y, x, caption, w - 1);
   attrset(CRT_colors[RESET_COLOR]);

   int captionLen = strlen(caption);
   x += captionLen;
   w -= captionLen;
   if (w <= 0)
      return;

   RichString_begin(out);
   Meter_displayBuffer(this, &out);
   RichString_printoffnVal(out, y, x, 0, w - 1);
   RichString_delete(&out);
}

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

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

static void BarMeterMode_draw(Meter* this, int x, int y, int w) {
   const char* caption = Meter_getCaption(this);
   w -= 2;
   attrset(CRT_colors[METER_TEXT]);
   int captionLen = 3;
   mvaddnstr(y, x, caption, captionLen);
   x += captionLen;
   w -= captionLen;
   attrset(CRT_colors[BAR_BORDER]);
   mvaddch(y, x, '[');
   mvaddch(y, x + MAXIMUM(w, 0), ']');
   attrset(CRT_colors[RESET_COLOR]);

   w--;
   x++;

   if (w < 1)
      return;

   // The text in the bar is right aligned;
   // Pad with maximal spaces and then calculate needed starting position offset
   RichString_begin(bar);
   RichString_appendChr(&bar, 0, ' ', w);
   RichString_appendWide(&bar, 0, this->txtBuffer);
   int startPos = RichString_sizeVal(bar) - w;
   if (startPos > w) {
      // Text is too large for bar
      // Truncate meter text at a space character
      for (int pos = 2 * w; pos > w; pos--) {
         if (RichString_getCharVal(bar, pos) == ' ') {
            while (pos > w && RichString_getCharVal(bar, pos - 1) == ' ')
               pos--;
            startPos = pos - w;
            break;
         }
      }

      // If still too large, print the start not the end
      startPos = MINIMUM(startPos, w);
   }
   assert(startPos >= 0);
   assert(startPos <= w);
   assert(startPos + w <= RichString_sizeVal(bar));

   int blockSizes[10];

   // First draw in the bar[] buffer...
   int offset = 0;
   for (uint8_t i = 0; i < this->curItems; 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 (RichString_getCharVal(bar, startPos + j) == ' ') {
            if (CRT_colorScheme == COLORSCHEME_MONOCHROME) {
               RichString_setChar(&bar, startPos + j, BarMeterMode_characters[i]);
            } else {
               RichString_setChar(&bar, startPos + j, '|');
            }
         }
      offset = nextOffset;
   }

   // ...then print the buffer.
   offset = 0;
   for (uint8_t i = 0; i < this->curItems; i++) {
      int attr = this->curAttributes ? this->curAttributes[i] : Meter_attributes(this)[i];
      RichString_setAttrn(&bar, CRT_colors[attr], startPos + offset, blockSizes[i]);
      RichString_printoffnVal(bar, y, x + offset, startPos + offset, MINIMUM(blockSizes[i], w - offset));
      offset += blockSizes[i];
      offset = CLAMP(offset, 0, w);
   }
   if (offset < w) {
      RichString_setAttrn(&bar, CRT_colors[BAR_SHADOW], startPos + offset, w - offset);
      RichString_printoffnVal(bar, y, x + offset, startPos + offset, w - offset);
   }

   RichString_delete(&bar);

   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 void GraphMeterMode_draw(Meter* this, int x, int y, int w) {
   const ProcessList* pl = this->pl;

   if (!this->drawData) {
      this->drawData = xCalloc(1, sizeof(GraphData));
   }
   GraphData* data = this->drawData;
   const int nValues = METER_GRAPHDATA_SIZE;

   const char* const* GraphMeterMode_dots;
   int GraphMeterMode_pixPerRow;
#ifdef HAVE_LIBNCURSESW
   if (CRT_utf8) {
      GraphMeterMode_dots = GraphMeterMode_dotsUtf8;
      GraphMeterMode_pixPerRow = PIXPERROW_UTF8;
   } else
#endif
   {
      GraphMeterMode_dots = GraphMeterMode_dotsAscii;
      GraphMeterMode_pixPerRow = PIXPERROW_ASCII;
   }

   const char* caption = Meter_getCaption(this);
   attrset(CRT_colors[METER_TEXT]);
   int captionLen = 3;
   mvaddnstr(y, x, caption, captionLen);
   x += captionLen;
   w -= captionLen;

   if (!timercmp(&pl->realtime, &(data->time), <)) {
      int globalDelay = this->pl->settings->delay;
      struct timeval delay = { .tv_sec = globalDelay / 10, .tv_usec = (globalDelay % 10) * 100000L };
      timeradd(&pl->realtime, &delay, &(data->time));

      for (int i = 0; i < nValues - 1; i++)
         data->values[i] = data->values[i + 1];

      double value = 0.0;
      for (uint8_t i = 0; i < this->curItems; i++)
         value += this->values[i];
      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;
      if (this->total < 1)
         this->total = 1;
      int v1 = CLAMP((int) lround(data->values[i] / this->total * pix), 1, pix);
      int v2 = CLAMP((int) lround(data->values[i + 1] / this->total * 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) {
#ifdef HAVE_LIBNCURSESW
   if (CRT_utf8)
      LEDMeterMode_digits = LEDMeterMode_digitsUtf8;
   else
#endif
      LEDMeterMode_digits = LEDMeterMode_digitsAscii;

   RichString_begin(out);
   Meter_displayBuffer(this, &out);

   int yText =
#ifdef HAVE_LIBNCURSESW
      CRT_utf8 ? y + 1 :
#endif
      y + 2;
   attrset(CRT_colors[LED_COLOR]);
   const char* caption = Meter_getCaption(this);
   mvaddstr(yText, x, caption);
   int xx = x + strlen(caption);
   int len = RichString_sizeVal(out);
   for (int i = 0; i < len; i++) {
      int c = RichString_getCharVal(out, i);
      if (c >= '0' && c <= '9') {
         if (xx - x + 4 > w)
            break;

         LEDMeterMode_drawDigit(xx, y, c - '0');
         xx += 4;
      } else {
         if (xx - x + 1 > w)
            break;
#ifdef HAVE_LIBNCURSESW
         const cchar_t wc = { .chars = { c, '\0' }, .attr = 0 }; /* use LED_COLOR from attrset() */
         mvadd_wch(yText, xx, &wc);
#else
         mvaddch(yText, xx, c);
#endif
         xx += 1;
      }
   }
   attrset(CRT_colors[RESET_COLOR]);
   RichString_delete(&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,
};

const MeterMode* const Meter_modes[] = {
   NULL,
   &BarMeterMode,
   &TextMeterMode,
   &GraphMeterMode,
   &LEDMeterMode,
   NULL
};

/* Blank meter */

static void BlankMeter_updateValues(Meter* this) {
   this->txtBuffer[0] = '\0';
}

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

static const int BlankMeter_attributes[] = {
   DEFAULT_COLOR
};

const 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 = ""
};

© 2014-2024 Faster IT GmbH | imprint | privacy policy