guicast/bcmeter.C

   1 #include "bcbutton.h"
   2 #include "bcmeter.h"
   3 #include "bcpixmap.h"
   4 #include "bcresources.h"
   5 #include "bcwindow.h"
   6 #include "colors.h"
   7 #include "fonts.h"
   8 #include "vframe.h"
   9 #include <string.h>
  10
  11 // Which source image to replicate
  12 #define METER_NORMAL 0
  13 #define METER_GREEN 1
  14 #define METER_RED 2
  15 #define METER_YELLOW 3
  16 #define METER_WHITE 4
  17 #define METER_OVER 5
  18
  19 // Region of source image to replicate
  20 #define METER_LEFT 0
  21 #define METER_MID 1
  22 #define METER_RIGHT 3
  23
  24
  25 BC_Meter::BC_Meter(int x,
  26         int y,
  27         int orientation,
  28         int pixels,
  29         int min,
  30         int max,
  31         int mode,
  32         int use_titles,
  33         long over_delay,
  34         long peak_delay)
  35  : BC_SubWindow(x, y, -1, -1)
  36 {
  37         this->use_titles = use_titles;
  38         this->over_delay = over_delay;
  39         this->peak_delay = peak_delay;
  40         this->min = min;
  41         this->max = max;
  42         this->mode = mode;
  43         this->orientation = orientation;
  44         this->pixels = pixels;
  45         for(int i = 0; i < TOTAL_METER_IMAGES; i++) images[i] = 0;
  46         db_titles.set_array_delete();
  47 }
  48
  49 BC_Meter::~BC_Meter()
  50 {
  51         db_titles.remove_all_objects();
  52         title_pixels.remove_all();
  53         tick_pixels.remove_all();
  54         for(int i = 0; i < TOTAL_METER_IMAGES; i++) delete images[i];
  55 }
  56
  57 int BC_Meter::get_title_w()
  58 {
  59         return get_resources()->meter_title_w;
  60 }
  61
  62 int BC_Meter::get_meter_w()
  63 {
  64         return get_resources()->ymeter_images[0]->get_w() + 2;
  65 }
  66
  67
  68 int BC_Meter::set_delays(int over_delay, int peak_delay)
  69 {
  70         this->over_delay = over_delay;
  71         this->peak_delay = peak_delay;
  72         return 0;
  73 }
  74
  75 int BC_Meter::initialize()
  76 {
  77         peak_timer = 0;
  78         level_pixel = peak_pixel = 0;
  79         over_timer = 0;
  80         over_count = 0;
  81         peak = level = -100;
  82
  83         if(orientation == METER_VERT)
  84         {
  85                 set_images(get_resources()->ymeter_images);
  86                 h = pixels;
  87                 w = images[0]->get_w();
  88                 if(use_titles) w += get_title_w();
  89         }
  90         else
  91         {
  92                 set_images(get_resources()->xmeter_images);
  93                 h = images[0]->get_h();
  94                 w = pixels;
  95                 if(use_titles) h += get_title_w();
  96         }
  97
  98 // calibrate the db titles
  99         get_divisions();
 100
 101         BC_SubWindow::initialize();
 102         draw_titles();
 103         draw_face();
 104         return 0;
 105 }
 106
 107 void BC_Meter::set_images(VFrame **data)
 108 {
 109         for(int i = 0; i < TOTAL_METER_IMAGES; i++) delete images[i];
 110         for(int i = 0; i < TOTAL_METER_IMAGES; i++)
 111                 images[i] = new BC_Pixmap(parent_window, data[i], PIXMAP_ALPHA);
 112 }
 113
 114 int BC_Meter::reposition_window(int x, int y, int pixels)
 115 {
 116         if(pixels < 0) pixels = this->pixels;
 117         this->pixels = pixels;
 118         if(orientation == METER_VERT)
 119                 BC_SubWindow::reposition_window(x, y, get_w(), pixels);
 120         else
 121                 BC_SubWindow::reposition_window(x, y, pixels, get_h());
 122
 123 //printf("BC_Meter::reposition_window 1 %d %d %d %d\n", x, y, w, h);
 124         get_divisions();
 125
 126 //set_color(WHITE);
 127 //draw_box(0, 0, w, h);
 128 //flash();
 129 //return 0;
 130         draw_titles();
 131         draw_face();
 132         return 0;
 133 }
 134
 135 int BC_Meter::reset()
 136 {
 137         level = min;
 138         peak = min;
 139         level_pixel = peak_pixel = 0;
 140         peak_timer = 0;
 141         over_timer = 0;
 142         over_count = 0;
 143         draw_face();
 144         return 0;
 145 }
 146
 147 int BC_Meter::button_press_event()
 148 {
 149         if(cursor_inside() && is_event_win())
 150         {
 151                 reset_over();
 152                 return 1;
 153         }
 154         return 0;
 155 }
 156
 157
 158 int BC_Meter::reset_over()
 159 {
 160         over_timer = 0;
 161         return 0;
 162 }
 163
 164 int BC_Meter::change_format(int mode, int min, int max)
 165 {
 166         this->mode = mode;
 167         this->min = min;
 168         this->max = max;
 169         reposition_window(get_x(), get_y(), pixels);
 170         return 0;
 171 }
 172
 173 int BC_Meter::level_to_pixel(float level)
 174 {
 175         int result;
 176         if(mode == METER_DB)
 177         {
 178                 result = (int)(pixels *
 179                         (level - min) /
 180                         (max - min));
 181                 if(level <= min) result = 0;
 182         }
 183         else
 184         {
 185 // Not implemented anymore
 186                 result = 0;
 187         }
 188
 189         return result;
 190 }
 191
 192
 193 void BC_Meter::get_divisions()
 194 {
 195         int i;
 196         int j, j_step;
 197         int division, division_step;
 198         char string[BCTEXTLEN];
 199         char *new_string;
 200
 201
 202         db_titles.remove_all_objects();
 203         title_pixels.remove_all();
 204         tick_pixels.remove_all();
 205
 206         low_division = 0;
 207         medium_division = 0;
 208         high_division = pixels;
 209
 210         int current_pixel;
 211 // Create tick marks and titles in one pass
 212         for(int current = min; current <= max; current++)
 213         {
 214                 if(orientation == METER_VERT)
 215                 {
 216 // Create tick mark
 217                         current_pixel = (pixels - METER_MARGIN * 2 - 2) *
 218                                 (current - min) /
 219                                 (max - min) + 2;
 220                         tick_pixels.append(current_pixel);
 221
 222 // Create titles in selected positions
 223                         if(current == min ||
 224                                 current == max ||
 225                                 current == 0 ||
 226                                 (current - min > 4 && max - current > 4 && !(current % 5)))
 227                         {
 228                                 int title_pixel = (pixels -
 229                                         METER_MARGIN * 2) *
 230                                         (current - min) /
 231                                         (max - min);
 232                                 sprintf(string, "%d", labs(current));
 233                                 new_string = new char[strlen(string) + 1];
 234                                 strcpy(new_string, string);
 235                                 db_titles.append(new_string);
 236                                 title_pixels.append(title_pixel);
 237                         }
 238                 }
 239                 else
 240                 {
 241                         current_pixel = (pixels - METER_MARGIN * 2) *
 242                                 (current - min) /
 243                                 (max - min);
 244                         tick_pixels.append(current_pixel);
 245 // Titles not supported for horizontal
 246                 }
 247
 248 // Create color divisions
 249                 if(current == -20)
 250                 {
 251                         low_division = current_pixel;
 252                 }
 253                 else
 254                 if(current == -5)
 255                 {
 256                         medium_division = current_pixel;
 257                 }
 258                 else
 259                 if(current == 0)
 260                 {
 261                         high_division = current_pixel;
 262                 }
 263         }
 264 // if(orientation == METER_VERT)
 265 // printf("BC_Meter::get_divisions %d %d %d %d\n",
 266 // low_division, medium_division, high_division, pixels);
 267 }
 268
 269 void BC_Meter::draw_titles()
 270 {
 271         if(!use_titles) return;
 272
 273         set_font(get_resources()->meter_font);
 274
 275         if(orientation == METER_HORIZ)
 276         {
 277                 draw_top_background(parent_window, 0, 0, get_w(), get_title_w());
 278
 279                 for(int i = 0; i < db_titles.total; i++)
 280                 {
 281                         draw_text(0, title_pixels.values[i], db_titles.values[i]);
 282                 }
 283
 284                 flash(0, 0, get_w(), get_title_w());
 285         }
 286         else
 287         if(orientation == METER_VERT)
 288         {
 289                 draw_top_background(parent_window, 0, 0, get_title_w(), get_h());
 290
 291 // Titles
 292                 for(int i = 0; i < db_titles.total; i++)
 293                 {
 294                         int title_y = pixels -
 295                                 title_pixels.values[i];
 296                         if(i == 0)
 297                                 title_y -= get_text_descent(SMALLFONT_3D);
 298                         else
 299                         if(i == db_titles.total - 1)
 300                                 title_y += get_text_ascent(SMALLFONT_3D);
 301                         else
 302                                 title_y += get_text_ascent(SMALLFONT_3D) / 2;
 303
 304                         set_color(get_resources()->meter_font_color);
 305                         draw_text(0,
 306                                 title_y,
 307                                 db_titles.values[i]);
 308                 }
 309
 310                 for(int i = 0; i < tick_pixels.total; i++)
 311                 {
 312 // Tick marks
 313                         int tick_y = pixels - tick_pixels.values[i] - METER_MARGIN;
 314                         set_color(get_resources()->meter_font_color);
 315                         draw_line(get_title_w() - 10 - 1, tick_y, get_title_w() - 1, tick_y);
 316                         if(get_resources()->meter_3d)
 317                         {
 318                                 set_color(BLACK);
 319                                 draw_line(get_title_w() - 10, tick_y + 1, get_title_w(), tick_y + 1);
 320                         }
 321                 }
 322
 323                 flash(0, 0, get_title_w(), get_h());
 324         }
 325 }
 326
 327 int BC_Meter::region_pixel(int region)
 328 {
 329         VFrame **reference_images = get_resources()->xmeter_images;
 330         int result;
 331
 332         if(region == METER_RIGHT)
 333                 result = region * reference_images[0]->get_w() / 4;
 334         else
 335                 result = region * reference_images[0]->get_w() / 4;
 336
 337         return result;
 338 }
 339
 340 int BC_Meter::region_pixels(int region)
 341 {
 342         int x1;
 343         int x2;
 344         int result;
 345         VFrame **reference_images = get_resources()->xmeter_images;
 346
 347         x1 = region * reference_images[0]->get_w() / 4;
 348         x2 = (region + 1) * reference_images[0]->get_w() / 4;
 349         if(region == METER_MID)
 350                 result = (x2 - x1) * 2;
 351         else
 352                 result = x2 - x1;
 353         return result;
 354 }
 355
 356 void BC_Meter::draw_face()
 357 {
 358         VFrame **reference_images = get_resources()->xmeter_images;
 359         int level_pixel = level_to_pixel(level);
 360         int peak_pixel2 = level_to_pixel(peak);
 361         int peak_pixel1 = peak_pixel2 - 2;
 362         int left_pixel = region_pixel(METER_MID);
 363         int right_pixel = pixels - region_pixels(METER_RIGHT);
 364         int pixel = 0;
 365         int image_number = 0, region = 0;
 366         int in_span, in_start;
 367         int x = use_titles ? get_title_w() : 0;
 368         int w = use_titles ? this->w - get_title_w() : this->w;
 369
 370         draw_top_background(parent_window, x, 0, w, h);
 371 //printf("BC_Meter::draw_face %d %d\n", w, h);
 372
 373         while(pixel < pixels)
 374         {
 375 // Select image to draw
 376                 if(pixel < level_pixel ||
 377                         (pixel >= peak_pixel1 && pixel < peak_pixel2))
 378                 {
 379                         if(pixel < low_division)
 380                                 image_number = METER_GREEN;
 381                         else
 382                         if(pixel < medium_division)
 383                                 image_number = METER_YELLOW;
 384                         else
 385                         if(pixel < high_division)
 386                                 image_number = METER_RED;
 387                         else
 388                                 image_number = METER_WHITE;
 389                 }
 390                 else
 391                 {
 392                         image_number = METER_NORMAL;
 393                 }
 394
 395 // Select region of image to duplicate
 396                 if(pixel < left_pixel)
 397                 {
 398                         region = METER_LEFT;
 399                         in_start = pixel + region_pixel(region);
 400                         in_span = region_pixels(region) - (in_start - region_pixel(region));
 401                 }
 402                 else
 403                 if(pixel < right_pixel)
 404                 {
 405                         region = METER_MID;
 406                         in_start = region_pixel(region);
 407                         in_span = region_pixels(region);
 408                 }
 409                 else
 410                 {
 411                         region = METER_RIGHT;
 412                         in_start = (pixel - right_pixel) + region_pixel(region);
 413                         in_span = region_pixels(region) - (in_start - region_pixel(region));;
 414                 }
 415
 416 //printf("BC_Meter::draw_face region %d pixel %d pixels %d in_start %d in_span %d\n", region, pixel, pixels, in_start, in_span);
 417                 if(in_span > 0)
 418                 {
 419 // Clip length to peaks
 420                         if(pixel < level_pixel && pixel + in_span > level_pixel)
 421                                 in_span = level_pixel - pixel;
 422                         else
 423                         if(pixel < peak_pixel1 && pixel + in_span > peak_pixel1)
 424                                 in_span = peak_pixel1 - pixel;
 425                         else
 426                         if(pixel < peak_pixel2 && pixel + in_span > peak_pixel2)
 427                                 in_span = peak_pixel2 - pixel;
 428
 429 // Clip length to color changes
 430                         if(image_number == METER_GREEN && pixel + in_span > low_division)
 431                                 in_span = low_division - pixel;
 432                         else
 433                         if(image_number == METER_YELLOW && pixel + in_span > medium_division)
 434                                 in_span = medium_division - pixel;
 435                         else
 436                         if(image_number == METER_RED && pixel + in_span > high_division)
 437                                 in_span = high_division - pixel;
 438
 439 // Clip length to regions
 440                         if(pixel < left_pixel && pixel + in_span > left_pixel)
 441                                 in_span = left_pixel - pixel;
 442                         else
 443                         if(pixel < right_pixel && pixel + in_span > right_pixel)
 444                                 in_span = right_pixel - pixel;
 445
 446 //printf("BC_Meter::draw_face image_number %d pixel %d pixels %d in_start %d in_span %d\n", image_number, pixel, pixels, in_start, in_span);
 447 //printf("BC_Meter::draw_face %d %d %d %d\n", orientation, region, images[image_number]->get_h() - in_start - in_span);
 448                         if(orientation == METER_HORIZ)
 449                                 draw_pixmap(images[image_number],
 450                                         pixel,
 451                                         x,
 452                                         in_span + 1,
 453                                         get_h(),
 454                                         in_start,
 455                                         0);
 456                         else
 457                                 draw_pixmap(images[image_number],
 458                                         x,
 459                                         get_h() - pixel - in_span,
 460                                         get_w(),
 461                                         in_span + 1,
 462                                         0,
 463                                         images[image_number]->get_h() - in_start - in_span);
 464
 465                         pixel += in_span;
 466                 }
 467                 else
 468                 {
 469 // Sanity check
 470                         break;
 471                 }
 472         }
 473
 474         if(over_timer)
 475         {
 476                 if(orientation == METER_HORIZ)
 477                         draw_pixmap(images[METER_OVER],
 478                                 10,
 479                                 2);
 480                 else
 481                         draw_pixmap(images[METER_OVER],
 482                                 x + 2,
 483                                 get_h() - 100);
 484
 485                 over_timer--;
 486         }
 487
 488         if(orientation == METER_HORIZ)
 489                 flash(0, 0, pixels, get_h());
 490         else
 491                 flash(x, 0, w, pixels);
 492         flush();
 493 }
 494
 495 int BC_Meter::update(float new_value, int over)
 496 {
 497         peak_timer++;
 498
 499         if(mode == METER_DB)
 500         {
 501                 if(new_value == 0)
 502                         level = min;
 503                 else
 504                         level = db.todb(new_value);        // db value
 505         }
 506
 507         if(level > peak || peak_timer > peak_delay)
 508         {
 509                 peak = level;
 510                 peak_timer = 0;
 511         }
 512
 513 // if(orientation == METER_HORIZ)
 514 // printf("BC_Meter::update %f\n", level);
 515         if(over) over_timer = over_delay;
 516 // only draw if window is visible
 517
 518         draw_face();
 519         return 0;
 520 }
 521 /*
 522 //      Local Variables:
 523 //      mode: C++
 524 //      c-file-style: "linux"
 525 //      End:
 526 */