ltt/branches/poly/lttv/modules/gui/controlflow/drawing.c

   1 /* This file is part of the Linux Trace Toolkit viewer
   2  * Copyright (C) 2003-2004 Mathieu Desnoyers
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License Version 2 as
   6  * published by the Free Software Foundation;
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License
  14  * along with this program; if not, write to the Free Software
  15  * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
  16  * MA 02111-1307, USA.
  17  */
  18
  19 #include <gtk/gtk.h>
  20 #include <gdk/gdk.h>
  21 #include <string.h>
  22
  23 #include <lttv/lttv.h>
  24 #include <lttv/tracecontext.h>
  25 #include <lttvwindow/lttvwindow.h>
  26 #include <lttv/state.h>
  27 #include <lttv/hook.h>
  28
  29 #include "drawing.h"
  30 #include "eventhooks.h"
  31 #include "cfv.h"
  32 #include "cfv-private.h"
  33
  34 #define g_info(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_INFO, format)
  35 #define g_debug(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, format)
  36
  37 //FIXME
  38 #define TRACE_NUMBER 0
  39
  40 #if 0 /* colors for two lines representation */
  41 GdkColor drawing_colors[NUM_COLORS] =
  42 { /* Pixel, R, G, B */
  43   { 0, 0, 0, 0 }, /* COL_BLACK */
  44   { 0, 0xFFFF, 0xFFFF, 0xFFFF }, /* COL_WHITE */
  45   { 0, 0x0FFF, 0xFFFF, 0xFFFF }, /* COL_WAIT_FORK : pale blue */
  46   { 0, 0xFFFF, 0xFFFF, 0x0000 }, /* COL_WAIT_CPU : yellow */
  47   { 0, 0xFFFF, 0xA000, 0xFCFF }, /* COL_EXIT : pale magenta */
  48   { 0, 0xFFFF, 0x0000, 0xFFFF }, /* COL_ZOMBIE : purple */
  49   { 0, 0xFFFF, 0x0000, 0x0000 }, /* COL_WAIT : red */
  50   { 0, 0x0000, 0xFFFF, 0x0000 }, /* COL_RUN : green */
  51   { 0, 0x8800, 0xFFFF, 0x8A00 }, /* COL_USER_MODE : pale green */
  52   { 0, 0x09FF, 0x01FF, 0xFFFF }, /* COL_SYSCALL : blue */
  53   { 0, 0xF900, 0x4200, 0xFF00 }, /* COL_TRAP : pale purple */
  54   { 0, 0xFFFF, 0x5AFF, 0x01FF }, /* COL_IRQ : orange */
  55   { 0, 0xFFFF, 0xFFFF, 0xFFFF }  /* COL_MODE_UNKNOWN : white */
  56
  57 };
  58 #endif //0
  59
  60
  61 GdkColor drawing_colors[NUM_COLORS] =
  62 { /* Pixel, R, G, B */
  63   { 0, 0, 0, 0 }, /* COL_BLACK */
  64   { 0, 0xFFFF, 0xFFFF, 0xFFFF }, /* COL_WHITE */
  65   { 0, 0x0000, 0xFF00, 0x0000 }, /* COL_RUN_USER_MODE : green */
  66   { 0, 0x0100, 0x9E00, 0xFFFF }, /* COL_RUN_SYSCALL : pale blue */
  67   { 0, 0xFF00, 0xFF00, 0x0100 }, /* COL_RUN_TRAP : yellow */
  68   { 0, 0xFFFF, 0x0000, 0x0000 }, /* COL_RUN_IRQ : red */
  69   { 0, 0xA3FF, 0x0000, 0x0000 }, /* COL_WAIT : dark red */
  70   { 0, 0x7700, 0x7700, 0x0000 }, /* COL_WAIT_CPU : dark yellow */
  71   { 0, 0x6400, 0x0000, 0x5D00 }, /* COL_ZOMBIE : dark purple */
  72   { 0, 0x0700, 0x6400, 0x0000 }, /* COL_WAIT_FORK : dark green */
  73   { 0, 0x8900, 0x0000, 0x8400 }, /* COL_EXIT : "less dark" magenta */
  74   { 0, 0xFFFF, 0xFFFF, 0xFFFF }, /* COL_MODE_UNKNOWN : white */
  75   { 0, 0xFFFF, 0xFFFF, 0xFFFF }  /* COL_UNNAMED : white */
  76
  77 };
  78
  79 /*
  80 RUN+USER MODE green
  81 RUN+SYSCALL
  82 RUN+TRAP
  83 RUN+IRQ
  84 WAIT+foncé
  85 WAIT CPU + WAIT FORK vert foncé ou jaune
  86 IRQ rouge
  87 TRAP: orange
  88 SYSCALL: bleu pâle
  89
  90 ZOMBIE + WAIT EXIT
  91 */
  92
  93
  94 /*****************************************************************************
  95  *                              drawing functions                            *
  96  *****************************************************************************/
  97
  98 static gboolean
  99 expose_ruler( GtkWidget *widget, GdkEventExpose *event, gpointer user_data );
 100
 101 static gboolean
 102 motion_notify_ruler(GtkWidget *widget, GdkEventMotion *event, gpointer user_data);
 103
 104
 105 /* Function responsible for updating the exposed area.
 106  * It must do an events request to the lttvwindow API to ask for this update.
 107  * Note : this function cannot clear the background, because it may
 108  * erase drawing already present (SAFETY).
 109  */
 110 void drawing_data_request(Drawing_t *drawing,
 111       GdkPixmap **pixmap,
 112       gint x, gint y,
 113       gint width,
 114       gint height)
 115 {
 116   if(width < 0) return ;
 117   if(height < 0) return ;
 118
 119   Tab *tab = drawing->control_flow_data->tab;
 120   TimeWindow time_window =
 121               lttvwindow_get_time_window(tab);
 122
 123   ControlFlowData *control_flow_data = drawing->control_flow_data;
 124   //    (ControlFlowData*)g_object_get_data(
 125   //               G_OBJECT(drawing->drawing_area), "control_flow_data");
 126
 127   LttTime start, time_end;
 128   LttTime window_end = time_window.end_time;
 129
 130   g_debug("req : window start_time : %u, %u", time_window.start_time.tv_sec,
 131                                        time_window.start_time.tv_nsec);
 132
 133   g_debug("req : window time width : %u, %u", time_window.time_width.tv_sec,
 134                                        time_window.time_width.tv_nsec);
 135
 136   g_debug("req : window_end : %u, %u", window_end.tv_sec,
 137                                        window_end.tv_nsec);
 138
 139   g_debug("x is : %i, x+width is : %i", x, x+width);
 140
 141   convert_pixels_to_time(drawing->width, x,
 142         time_window,
 143         &start);
 144
 145   convert_pixels_to_time(drawing->width, x+width,
 146         time_window,
 147         &time_end);
 148   time_end = ltt_time_add(time_end, ltt_time_one); // because main window
 149                                                    // doesn't deliver end time.
 150
 151   lttvwindow_events_request_remove_all(tab,
 152                                        control_flow_data);
 153
 154   {
 155     /* find the tracehooks */
 156     LttvTracesetContext *tsc = lttvwindow_get_traceset_context(tab);
 157
 158     LttvTraceset *traceset = tsc->ts;
 159
 160     guint i, k, nb_trace;
 161
 162     LttvTraceState *ts;
 163
 164     LttvTracefileState *tfs;
 165
 166     GArray *hooks;
 167
 168     LttvTraceHook hook;
 169
 170     LttvAttributeValue val;
 171
 172     nb_trace = lttv_traceset_number(traceset);
 173     // FIXME : eventually request for more traces
 174     // for(i = 0 ; i < nb_trace ; i++) {
 175     for(i = 0; i<MIN(TRACE_NUMBER+1, nb_trace);i++)
 176     {
 177       EventsRequest *events_request = g_new(EventsRequest, 1);
 178       // Create the hooks
 179       //LttvHooks *event = lttv_hooks_new();
 180       LttvHooksById *event_by_id = lttv_hooks_by_id_new();
 181       LttvHooks *before_chunk_traceset = lttv_hooks_new();
 182       LttvHooks *after_chunk_traceset = lttv_hooks_new();
 183       LttvHooks *before_request_hook = lttv_hooks_new();
 184       LttvHooks *after_request_hook = lttv_hooks_new();
 185
 186       lttv_hooks_add(before_chunk_traceset,
 187                      before_chunk,
 188                      events_request,
 189                      LTTV_PRIO_DEFAULT);
 190
 191       lttv_hooks_add(after_chunk_traceset,
 192                      after_chunk,
 193                      events_request,
 194                      LTTV_PRIO_DEFAULT);
 195
 196       lttv_hooks_add(before_request_hook,
 197                      before_request,
 198                      events_request,
 199                      LTTV_PRIO_DEFAULT);
 200
 201       lttv_hooks_add(after_request_hook,
 202                      after_request,
 203                      events_request,
 204                      LTTV_PRIO_DEFAULT);
 205
 206
 207       ts = (LttvTraceState *)tsc->traces[i];
 208
 209       /* Find the eventtype id for the following events and register the
 210          associated by id hooks. */
 211
 212       hooks = g_array_new(FALSE, FALSE, sizeof(LttvTraceHook));
 213       g_array_set_size(hooks, 15);
 214
 215       /* before hooks */
 216
 217       lttv_trace_find_hook(ts->parent.t, "core","syscall_entry","syscall_id",
 218     NULL, NULL, before_execmode_hook, &g_array_index(hooks, LttvTraceHook, 0));
 219
 220       lttv_trace_find_hook(ts->parent.t, "core", "syscall_exit", NULL, NULL,
 221           NULL, before_execmode_hook, &g_array_index(hooks, LttvTraceHook, 1));
 222
 223       lttv_trace_find_hook(ts->parent.t, "core", "trap_entry", "trap_id",
 224     NULL, NULL, before_execmode_hook, &g_array_index(hooks, LttvTraceHook, 2));
 225
 226       lttv_trace_find_hook(ts->parent.t, "core", "trap_exit", NULL, NULL, NULL,
 227           before_execmode_hook, &g_array_index(hooks, LttvTraceHook, 3));
 228
 229       lttv_trace_find_hook(ts->parent.t, "core", "irq_entry", "irq_id", NULL,
 230           NULL, before_execmode_hook, &g_array_index(hooks, LttvTraceHook, 4));
 231
 232       lttv_trace_find_hook(ts->parent.t, "core", "irq_exit", NULL, NULL, NULL,
 233           before_execmode_hook, &g_array_index(hooks, LttvTraceHook, 5));
 234
 235       lttv_trace_find_hook(ts->parent.t, "core", "schedchange", "in", "out",
 236         "out_state", before_schedchange_hook,
 237         &g_array_index(hooks, LttvTraceHook, 6));
 238
 239       lttv_trace_find_hook(ts->parent.t, "core", "process", "event_sub_id",
 240           "event_data1", "event_data2", before_process_hook,
 241           &g_array_index(hooks, LttvTraceHook, 7));
 242
 243 #if 0
 244       lttv_trace_find_hook(ts->parent.t, "core", "process_fork", "child_pid",
 245           NULL, NULL, process_fork, &g_array_index(hooks, LttvTraceHook, 7));
 246
 247       lttv_trace_find_hook(ts->parent.t, "core", "process_exit", NULL, NULL,
 248           NULL, process_exit, &g_array_index(hooks, LttvTraceHook, 8));
 249 #endif //0
 250
 251       /* after hooks */
 252
 253       lttv_trace_find_hook(ts->parent.t, "core","syscall_entry","syscall_id",
 254     NULL, NULL, after_execmode_hook, &g_array_index(hooks, LttvTraceHook, 8));
 255 #if 0
 256       /**** DESACTIVATED ****/
 257       lttv_trace_find_hook(ts->parent.t, "core", "syscall_exit", NULL, NULL,
 258           NULL, after_execmode_hook, &g_array_index(hooks, LttvTraceHook, 9));
 259 #endif //0
 260
 261       lttv_trace_find_hook(ts->parent.t, "core", "trap_entry", "trap_id",
 262     NULL, NULL, after_execmode_hook, &g_array_index(hooks, LttvTraceHook, 9));
 263
 264       lttv_trace_find_hook(ts->parent.t, "core", "trap_exit", NULL, NULL, NULL,
 265           after_execmode_hook, &g_array_index(hooks, LttvTraceHook, 10));
 266
 267       lttv_trace_find_hook(ts->parent.t, "core", "irq_entry", "irq_id", NULL,
 268           NULL, after_execmode_hook, &g_array_index(hooks, LttvTraceHook, 11));
 269
 270       lttv_trace_find_hook(ts->parent.t, "core", "irq_exit", NULL, NULL, NULL,
 271           after_execmode_hook, &g_array_index(hooks, LttvTraceHook, 12));
 272
 273       lttv_trace_find_hook(ts->parent.t, "core", "schedchange", "in", "out",
 274         "out_state", after_schedchange_hook,
 275         &g_array_index(hooks, LttvTraceHook, 13));
 276
 277       lttv_trace_find_hook(ts->parent.t, "core", "process", "event_sub_id",
 278           "event_data1", "event_data2", after_process_hook,
 279           &g_array_index(hooks, LttvTraceHook, 14));
 280
 281 #if 0
 282       lttv_trace_find_hook(ts->parent.t, "core", "process_fork", "child_pid",
 283           NULL, NULL, process_fork, &g_array_index(hooks, LttvTraceHook, 7));
 284
 285       lttv_trace_find_hook(ts->parent.t, "core", "process_exit", NULL, NULL,
 286           NULL, process_exit, &g_array_index(hooks, LttvTraceHook, 8));
 287 #endif //0
 288
 289
 290
 291       /* Add these hooks to each event_by_id hooks list */
 292       /* add before */
 293       for(k = 0 ; k < hooks->len/2 ; k++) {
 294         hook = g_array_index(hooks, LttvTraceHook, k);
 295         lttv_hooks_add(lttv_hooks_by_id_find(event_by_id,
 296                         hook.id), hook.h,
 297                         events_request,
 298                         LTTV_PRIO_STATE-5);
 299       }
 300
 301       /* add after */
 302       for(k = hooks->len/2 ; k < hooks->len ; k++) {
 303         hook = g_array_index(hooks, LttvTraceHook, k);
 304         lttv_hooks_add(lttv_hooks_by_id_find(event_by_id,
 305                        hook.id), hook.h,
 306                        events_request,
 307                        LTTV_PRIO_STATE+5);
 308       }
 309
 310       events_request->hooks = hooks;
 311
 312       // Fill the events request
 313       events_request->owner = control_flow_data;
 314       events_request->viewer_data = control_flow_data;
 315       events_request->servicing = FALSE;
 316       events_request->start_time = start;
 317       events_request->start_position = NULL;
 318       events_request->stop_flag = FALSE;
 319       events_request->end_time = time_end;
 320       events_request->num_events = G_MAXUINT;
 321       events_request->end_position = NULL;
 322       events_request->trace = i;    /* FIXME */
 323       events_request->before_chunk_traceset = before_chunk_traceset;
 324       events_request->before_chunk_trace = NULL;
 325       events_request->before_chunk_tracefile = NULL;
 326       events_request->event = NULL;
 327       events_request->event_by_id = event_by_id;
 328       events_request->after_chunk_tracefile = NULL;
 329       events_request->after_chunk_trace = NULL;
 330       events_request->after_chunk_traceset = after_chunk_traceset;
 331       events_request->before_request = before_request_hook;
 332       events_request->after_request = after_request_hook;
 333
 334       g_debug("req : start : %u, %u", start.tv_sec,
 335                                           start.tv_nsec);
 336
 337       g_debug("req : end : %u, %u", time_end.tv_sec,
 338                                          time_end.tv_nsec);
 339
 340       lttvwindow_events_request(tab, events_request);
 341
 342     }
 343
 344   }
 345
 346 #if 0
 347   lttv_hooks_add(event,
 348                  before_schedchange_hook,
 349                  events_request,
 350                  LTTV_PRIO_STATE-5);
 351   lttv_hooks_add(event,
 352                  after_schedchange_hook,
 353                  events_request,
 354                  LTTV_PRIO_STATE+5);
 355   lttv_hooks_add(event,
 356                  before_execmode_hook,
 357                  events_request,
 358                  LTTV_PRIO_STATE-5);
 359   lttv_hooks_add(event,
 360                  after_execmode_hook,
 361                  events_request,
 362                  LTTV_PRIO_STATE+5);
 363   lttv_hooks_add(event,
 364                  before_process_hook,
 365                  events_request,
 366                  LTTV_PRIO_STATE-5);
 367   lttv_hooks_add(event,
 368                  after_process_hook,
 369                  events_request,
 370                  LTTV_PRIO_STATE+5);
 371 #endif //0
 372
 373 }
 374
 375
 376 static void set_last_start(gpointer key, gpointer value, gpointer user_data)
 377 {
 378   ProcessInfo *process_info = (ProcessInfo*)key;
 379   HashedProcessData *hashed_process_data = (HashedProcessData*)value;
 380   guint x = (guint)user_data;
 381
 382   hashed_process_data->x.over = x;
 383   hashed_process_data->x.over_used = FALSE;
 384   hashed_process_data->x.over_marked = FALSE;
 385   hashed_process_data->x.middle = x;
 386   hashed_process_data->x.middle_used = FALSE;
 387   hashed_process_data->x.middle_marked = FALSE;
 388   hashed_process_data->x.under = x;
 389   hashed_process_data->x.under_used = FALSE;
 390   hashed_process_data->x.under_marked = FALSE;
 391   hashed_process_data->next_good_time = ltt_time_zero;
 392
 393   return;
 394 }
 395
 396 void drawing_data_request_begin(EventsRequest *events_request, LttvTracesetState *tss)
 397 {
 398   g_debug("Begin of data request");
 399   ControlFlowData *cfd = events_request->viewer_data;
 400   LttvTracesetContext *tsc = LTTV_TRACESET_CONTEXT(tss);
 401   TimeWindow time_window =
 402     lttvwindow_get_time_window(cfd->tab);
 403   LttTime end_time = time_window.end_time;
 404
 405   guint width = cfd->drawing->width;
 406   guint x=0;
 407
 408   cfd->drawing->last_start = events_request->start_time;
 409
 410   convert_time_to_pixels(
 411           time_window,
 412           events_request->start_time,
 413           width,
 414           &x);
 415
 416   g_hash_table_foreach(cfd->process_list->process_hash, set_last_start,
 417                             (gpointer)x);
 418
 419 }
 420
 421 void drawing_chunk_begin(EventsRequest *events_request, LttvTracesetState *tss)
 422 {
 423   g_debug("Begin of chunk");
 424   ControlFlowData *cfd = events_request->viewer_data;
 425   LttvTracesetContext *tsc = LTTV_TRACESET_CONTEXT(tss);
 426   LttTime current_time = lttv_traceset_context_get_current_tfc(tsc)->timestamp;
 427   guint num_cpu =
 428     ltt_trace_per_cpu_tracefile_number(tss->parent.traces[TRACE_NUMBER]->t);
 429
 430   cfd->process_list->current_hash_data = g_new(HashedProcessData*,num_cpu);
 431   memset(cfd->process_list->current_hash_data, 0,
 432          sizeof(HashedProcessData*)*num_cpu);
 433   //cfd->drawing->last_start = LTT_TIME_MIN(current_time,
 434   //                                        events_request->end_time);
 435 }
 436
 437
 438 void drawing_request_expose(EventsRequest *events_request,
 439                             LttvTracesetState *tss,
 440                             LttTime end_time)
 441 {
 442   gint x, x_end, width;
 443
 444   ControlFlowData *cfd = events_request->viewer_data;
 445   LttvTracesetContext *tsc = LTTV_TRACESET_CONTEXT(tss);
 446   Drawing_t *drawing = cfd->drawing;
 447
 448   TimeWindow time_window =
 449         lttvwindow_get_time_window(cfd->tab);
 450
 451   g_debug("request expose");
 452
 453   LttTime window_end = time_window.end_time;
 454
 455 #if 0
 456   convert_time_to_pixels(
 457         time_window,
 458         cfd->drawing->last_start,
 459         drawing->width,
 460         &x);
 461
 462 #endif //0
 463   convert_time_to_pixels(
 464         time_window,
 465         end_time,
 466         drawing->width,
 467         &x_end);
 468   x = drawing->damage_begin;
 469  // x_end = drawing->damage_end;
 470   width = x_end - x;
 471
 472   drawing->damage_begin = x+width;
 473   //drawing->damage_end = drawing->width;
 474
 475   /* ask for the buffer to be redrawn */
 476
 477   //gtk_widget_queue_draw_area ( drawing->drawing_area,
 478   //                             0, 0,
 479   //                             drawing->width, drawing->height);
 480
 481   /* FIXME
 482    * will need more precise pixel_to_time and time_to_pixel conversion
 483    * functions to redraw only the needed area. */
 484   gtk_widget_queue_draw_area ( drawing->drawing_area,
 485                                x, 0,
 486                                width, drawing->height);
 487
 488 }
 489
 490
 491 /* Callbacks */
 492
 493
 494 /* Create a new backing pixmap of the appropriate size */
 495 /* As the scaling will always change, it's of no use to copy old
 496  * pixmap.
 497  *
 498  * Only change the size if width changes. The height is specified and changed
 499  * when process ID are added or removed from the process list.
 500  */
 501 static gboolean
 502 configure_event( GtkWidget *widget, GdkEventConfigure *event,
 503     gpointer user_data)
 504 {
 505   Drawing_t *drawing = (Drawing_t*)user_data;
 506
 507
 508   /* First, get the new time interval of the main window */
 509   /* we assume (see documentation) that the main window
 510    * has updated the time interval before this configure gets
 511    * executed.
 512    */
 513   //lttvwindow_get_time_window(drawing->control_flow_data->mw,
 514   //      &drawing->control_flow_data->time_window);
 515
 516   /* New pixmap, size of the configure event */
 517   //GdkPixmap *pixmap = gdk_pixmap_new(widget->window,
 518   //      widget->allocation.width + SAFETY,
 519   //      widget->allocation.height + SAFETY,
 520   //      -1);
 521
 522   if(widget->allocation.width != drawing->width) {
 523     g_debug("drawing configure event");
 524     g_debug("New alloc draw size : %i by %i",widget->allocation.width,
 525                                     widget->allocation.height);
 526
 527
 528     if (drawing->pixmap)
 529       gdk_pixmap_unref(drawing->pixmap);
 530
 531     drawing->width = widget->allocation.width;
 532     //drawing->height = widget->allocation.height;
 533
 534     drawing->pixmap = gdk_pixmap_new(widget->window,
 535                                      drawing->width + SAFETY,
 536                                      drawing->height,
 537                                      -1);
 538     //ProcessList_get_height
 539     // (GuiControlFlow_get_process_list(drawing->control_flow_data)),
 540
 541
 542     // Clear the image
 543     gdk_draw_rectangle (drawing->pixmap,
 544           widget->style->black_gc,
 545           TRUE,
 546           0, 0,
 547           drawing->width+SAFETY,
 548           drawing->height);
 549
 550     //g_info("init data request");
 551
 552
 553     /* Initial data request */
 554     /* no, do initial data request in the expose event */
 555     // Do not need to ask for data of 1 pixel : not synchronized with
 556     // main window time at this moment.
 557     //drawing_data_request(drawing, &drawing->pixmap, 0, 0,
 558     //    widget->allocation.width,
 559     //    widget->allocation.height);
 560
 561     //drawing->width = widget->allocation.width;
 562     //drawing->height = widget->allocation.height;
 563
 564     drawing->damage_begin = 0;
 565     drawing->damage_end = widget->allocation.width;
 566
 567     if(drawing->damage_begin < drawing->damage_end)
 568     {
 569       drawing_data_request(drawing,
 570                            &drawing->pixmap,
 571                            drawing->damage_begin,
 572                            0,
 573                            drawing->damage_end - drawing->damage_begin,
 574                            drawing->height);
 575     }
 576   }
 577   return TRUE;
 578 }
 579
 580
 581 /* Redraw the screen from the backing pixmap */
 582 static gboolean
 583 expose_event( GtkWidget *widget, GdkEventExpose *event, gpointer user_data )
 584 {
 585   Drawing_t *drawing = (Drawing_t*)user_data;
 586
 587   ControlFlowData *control_flow_data =
 588       (ControlFlowData*)g_object_get_data(
 589                 G_OBJECT(widget),
 590                 "control_flow_data");
 591   if(drawing->gc == NULL) {
 592     drawing->gc = gdk_gc_new(drawing->drawing_area->window);
 593     gdk_gc_copy(drawing->gc, drawing->drawing_area->style->black_gc);
 594   }
 595
 596   TimeWindow time_window =
 597       lttvwindow_get_time_window(control_flow_data->tab);
 598   LttTime current_time =
 599       lttvwindow_get_current_time(control_flow_data->tab);
 600
 601   guint cursor_x=0;
 602
 603   LttTime window_end = time_window.end_time;
 604
 605   /* update the screen from the pixmap buffer */
 606   gdk_draw_pixmap(widget->window,
 607       widget->style->fg_gc[GTK_WIDGET_STATE (widget)],
 608       drawing->pixmap,
 609       event->area.x, event->area.y,
 610       event->area.x, event->area.y,
 611       event->area.width, event->area.height);
 612
 613
 614   if(ltt_time_compare(time_window.start_time, current_time) <= 0 &&
 615            ltt_time_compare(window_end, current_time) >= 0)
 616   {
 617     /* Draw the dotted lines */
 618     convert_time_to_pixels(
 619           time_window,
 620           current_time,
 621           drawing->width,
 622           &cursor_x);
 623
 624
 625     if(drawing->dotted_gc == NULL) {
 626
 627       drawing->dotted_gc = gdk_gc_new(drawing->drawing_area->window);
 628       gdk_gc_copy(drawing->dotted_gc, widget->style->white_gc);
 629
 630       gint8 dash_list[] = { 1, 2 };
 631       gdk_gc_set_line_attributes(drawing->dotted_gc,
 632                                  1,
 633                                  GDK_LINE_ON_OFF_DASH,
 634                                  GDK_CAP_BUTT,
 635                                  GDK_JOIN_MITER);
 636       gdk_gc_set_dashes(drawing->dotted_gc,
 637                         0,
 638                         dash_list,
 639                         2);
 640     }
 641
 642     drawing_draw_line(NULL, widget->window,
 643                   cursor_x, 0,
 644                   cursor_x, drawing->height,
 645                   drawing->dotted_gc);
 646   }
 647   return FALSE;
 648 }
 649
 650 static gboolean
 651 after_expose_event( GtkWidget *widget, GdkEventExpose *event, gpointer user_data )
 652 {
 653   //g_assert(0);
 654   g_debug("AFTER EXPOSE");
 655
 656   return FALSE;
 657
 658
 659 }
 660
 661 #if 0
 662 void
 663 tree_row_activated(GtkTreeModel *treemodel,
 664                    GtkTreePath *arg1,
 665                    GtkTreeViewColumn *arg2,
 666                    gpointer user_data)
 667 {
 668   ControlFlowData *cfd = (ControlFlowData*)user_data;
 669   Drawing_t *drawing = cfd->drawing;
 670   GtkTreeView *treeview = cfd->process_list->process_list_widget;
 671   gint *path_indices;
 672   gint height;
 673
 674   path_indices =  gtk_tree_path_get_indices (arg1);
 675
 676   height = get_cell_height(cfd->process_list,
 677         GTK_TREE_VIEW(treeview));
 678   drawing->horizontal_sel = height * path_indices[0];
 679   g_critical("new hor sel : %i", drawing->horizontal_sel);
 680 }
 681 #endif //0
 682
 683 /* mouse click */
 684 static gboolean
 685 button_press_event( GtkWidget *widget, GdkEventButton *event, gpointer user_data )
 686 {
 687   ControlFlowData *control_flow_data =
 688       (ControlFlowData*)g_object_get_data(
 689                 G_OBJECT(widget),
 690                 "control_flow_data");
 691   Drawing_t *drawing = control_flow_data->drawing;
 692   TimeWindow time_window =
 693                lttvwindow_get_time_window(control_flow_data->tab);
 694
 695   g_debug("click");
 696   if(event->button == 1)
 697   {
 698     LttTime time;
 699
 700     LttTime window_end = time_window.end_time;
 701
 702
 703     /* left mouse button click */
 704     g_debug("x click is : %f", event->x);
 705
 706     convert_pixels_to_time(drawing->width, (guint)event->x,
 707         time_window,
 708         &time);
 709
 710     lttvwindow_report_current_time(control_flow_data->tab, time);
 711
 712   }
 713
 714   return FALSE;
 715 }
 716
 717 static gboolean
 718 scrollbar_size_allocate(GtkWidget *widget,
 719                         GtkAllocation *allocation,
 720                         gpointer user_data)
 721 {
 722   Drawing_t *drawing = (Drawing_t*)user_data;
 723
 724   gtk_widget_set_size_request(drawing->padding, allocation->width, -1);
 725   //gtk_widget_queue_resize(drawing->padding);
 726   //gtk_widget_queue_resize(drawing->ruler);
 727   gtk_container_check_resize(GTK_CONTAINER(drawing->ruler_hbox));
 728   return 0;
 729 }
 730
 731
 732
 733 Drawing_t *drawing_construct(ControlFlowData *control_flow_data)
 734 {
 735   Drawing_t *drawing = g_new(Drawing_t, 1);
 736
 737   drawing->control_flow_data = control_flow_data;
 738
 739   drawing->vbox = gtk_vbox_new(FALSE, 1);
 740
 741
 742   drawing->ruler_hbox = gtk_hbox_new(FALSE, 1);
 743   drawing->ruler = gtk_drawing_area_new ();
 744   //gtk_widget_set_size_request(drawing->ruler, -1, 27);
 745
 746   drawing->padding = gtk_drawing_area_new ();
 747   //gtk_widget_set_size_request(drawing->padding, -1, 27);
 748   gtk_box_pack_start(GTK_BOX(drawing->ruler_hbox), drawing->ruler,
 749                      TRUE, TRUE, 0);
 750   gtk_box_pack_end(GTK_BOX(drawing->ruler_hbox), drawing->padding,
 751                      FALSE, FALSE, 0);
 752
 753
 754
 755   drawing->drawing_area = gtk_drawing_area_new ();
 756
 757   drawing->gc = NULL;
 758
 759   drawing->hbox = gtk_hbox_new(FALSE, 1);
 760   drawing->viewport = gtk_viewport_new(NULL, control_flow_data->v_adjust);
 761   drawing->scrollbar = gtk_vscrollbar_new(control_flow_data->v_adjust);
 762   gtk_box_pack_start(GTK_BOX(drawing->hbox), drawing->viewport,
 763                      TRUE, TRUE, 0);
 764   gtk_box_pack_end(GTK_BOX(drawing->hbox), drawing->scrollbar,
 765                      FALSE, FALSE, 0);
 766
 767   //drawing->scrolled_window =
 768   //    gtk_scrolled_window_new (NULL,
 769   //    control_flow_data->v_adjust);
 770
 771   //gtk_scrolled_window_set_policy(
 772   //  GTK_SCROLLED_WINDOW(drawing->scrolled_window),
 773   //  GTK_POLICY_NEVER,
 774   //  GTK_POLICY_AUTOMATIC);
 775
 776   gtk_container_add(GTK_CONTAINER(drawing->viewport),
 777                     drawing->drawing_area);
 778   //gtk_scrolled_window_add_with_viewport(
 779   //  GTK_SCROLLED_WINDOW(drawing->scrolled_window),
 780   //  drawing->drawing_area);
 781
 782   gtk_box_pack_start(GTK_BOX(drawing->vbox), drawing->ruler_hbox,
 783                      FALSE, FALSE, 0);
 784   gtk_box_pack_end(GTK_BOX(drawing->vbox), drawing->hbox,
 785                    TRUE, TRUE, 0);
 786
 787   drawing->pango_layout =
 788     gtk_widget_create_pango_layout(drawing->drawing_area, NULL);
 789
 790   drawing->dotted_gc = NULL;
 791
 792   drawing->height = 1;
 793   drawing->width = 1;
 794   drawing->depth = 0;
 795
 796   drawing->damage_begin = 0;
 797   drawing->damage_end = 0;
 798   drawing->horizontal_sel = -1;
 799
 800   //gtk_widget_set_size_request(drawing->drawing_area->window, 50, 50);
 801   g_object_set_data_full(
 802       G_OBJECT(drawing->drawing_area),
 803       "Link_drawing_Data",
 804       drawing,
 805       (GDestroyNotify)drawing_destroy);
 806
 807   g_object_set_data(
 808       G_OBJECT(drawing->ruler),
 809       "drawing",
 810       drawing);
 811
 812
 813   //gtk_widget_modify_bg( drawing->drawing_area,
 814   //      GTK_STATE_NORMAL,
 815   //      &CF_Colors[BLACK]);
 816
 817   //gdk_window_get_geometry(drawing->drawing_area->window,
 818   //    NULL, NULL,
 819   //    &(drawing->width),
 820   //    &(drawing->height),
 821   //    -1);
 822
 823   //drawing->pixmap = gdk_pixmap_new(
 824   //    drawing->drawing_area->window,
 825   //    drawing->width,
 826   //    drawing->height,
 827   //    drawing->depth);
 828
 829   drawing->pixmap = NULL;
 830
 831 //  drawing->pixmap = gdk_pixmap_new(drawing->drawing_area->window,
 832 //        drawing->drawing_area->allocation.width,
 833 //        drawing->drawing_area->allocation.height,
 834 //        -1);
 835
 836   g_signal_connect (G_OBJECT(drawing->drawing_area),
 837         "configure_event",
 838         G_CALLBACK (configure_event),
 839         (gpointer)drawing);
 840
 841   g_signal_connect (G_OBJECT(drawing->ruler),
 842         "expose_event",
 843         G_CALLBACK(expose_ruler),
 844         (gpointer)drawing);
 845
 846   gtk_widget_add_events(drawing->ruler, GDK_POINTER_MOTION_MASK);
 847
 848   g_signal_connect (G_OBJECT(drawing->ruler),
 849         "motion-notify-event",
 850         G_CALLBACK(motion_notify_ruler),
 851         (gpointer)drawing);
 852
 853
 854   g_signal_connect (G_OBJECT(drawing->scrollbar),
 855         "size-allocate",
 856         G_CALLBACK(scrollbar_size_allocate),
 857         (gpointer)drawing);
 858
 859
 860
 861   g_signal_connect (G_OBJECT(drawing->drawing_area),
 862         "expose_event",
 863         G_CALLBACK (expose_event),
 864         (gpointer)drawing);
 865
 866   g_signal_connect_after (G_OBJECT(drawing->drawing_area),
 867         "expose_event",
 868         G_CALLBACK (after_expose_event),
 869         (gpointer)drawing);
 870
 871   g_signal_connect (G_OBJECT(drawing->drawing_area),
 872         "button-press-event",
 873         G_CALLBACK (button_press_event),
 874         (gpointer)drawing);
 875
 876   gtk_widget_show(drawing->ruler);
 877   gtk_widget_show(drawing->padding);
 878   gtk_widget_show(drawing->ruler_hbox);
 879
 880   gtk_widget_show(drawing->drawing_area);
 881   //gtk_widget_show(drawing->scrolled_window);
 882   gtk_widget_show(drawing->viewport);
 883   gtk_widget_show(drawing->scrollbar);
 884   gtk_widget_show(drawing->hbox);
 885
 886   /* Allocate the colors */
 887   GdkColormap* colormap = gdk_colormap_get_system();
 888   gboolean success[NUM_COLORS];
 889   gdk_colormap_alloc_colors(colormap, drawing_colors, NUM_COLORS, FALSE,
 890                             TRUE, success);
 891
 892   return drawing;
 893 }
 894
 895 void drawing_destroy(Drawing_t *drawing)
 896 {
 897   g_info("drawing_destroy %p", drawing);
 898
 899   /* Free the colors */
 900   GdkColormap* colormap = gdk_colormap_get_system();
 901
 902   gdk_colormap_free_colors(colormap, drawing_colors, NUM_COLORS);
 903
 904
 905
 906   // Do not unref here, Drawing_t destroyed by it's widget.
 907   //g_object_unref( G_OBJECT(drawing->drawing_area));
 908   if(drawing->gc != NULL)
 909     gdk_gc_unref(drawing->gc);
 910
 911   g_free(drawing->pango_layout);
 912   if(!drawing->dotted_gc) gdk_gc_unref(drawing->dotted_gc);
 913   g_free(drawing);
 914   g_info("drawing_destroy end");
 915 }
 916
 917 GtkWidget *drawing_get_drawing_area(Drawing_t *drawing)
 918 {
 919   return drawing->drawing_area;
 920 }
 921
 922 GtkWidget *drawing_get_widget(Drawing_t *drawing)
 923 {
 924   return drawing->vbox;
 925 }
 926
 927 /* convert_pixels_to_time
 928  *
 929  * Convert from window pixel and time interval to an absolute time.
 930  */
 931 __inline__ void convert_pixels_to_time(
 932     gint width,
 933     guint x,
 934     TimeWindow time_window,
 935     LttTime *time)
 936 {
 937   double time_d;
 938
 939   time_d = time_window.time_width_double;
 940   time_d = time_d / (double)width * (double)x;
 941   *time = ltt_time_from_double(time_d);
 942   *time = ltt_time_add(time_window.start_time, *time);
 943 }
 944
 945
 946 __inline__ void convert_time_to_pixels(
 947     TimeWindow time_window,
 948     LttTime time,
 949     int width,
 950     guint *x)
 951 {
 952   double time_d;
 953 #ifdef EXTRA_CHECK
 954   g_assert(ltt_time_compare(window_time_begin, time) <= 0 &&
 955            ltt_time_compare(window_time_end, time) >= 0);
 956 #endif //EXTRA_CHECK
 957
 958   time = ltt_time_sub(time, time_window.start_time);
 959
 960   time_d = ltt_time_to_double(time);
 961
 962   if(time_window.time_width_double == 0.0) {
 963     g_assert(time_d == 0.0);
 964     *x = 0;
 965   } else {
 966     *x = (guint)(time_d / time_window.time_width_double * (double)width);
 967   }
 968
 969 }
 970
 971 void drawing_draw_line( Drawing_t *drawing,
 972       GdkPixmap *pixmap,
 973       guint x1, guint y1,
 974       guint x2, guint y2,
 975       GdkGC *GC)
 976 {
 977   gdk_draw_line (pixmap,
 978       GC,
 979       x1, y1, x2, y2);
 980 }
 981
 982 void drawing_clear(Drawing_t *drawing)
 983 {
 984   if (drawing->pixmap)
 985     gdk_pixmap_unref(drawing->pixmap);
 986
 987   drawing->height = 1;
 988   /* Allocate a new pixmap with new height */
 989   drawing->pixmap = gdk_pixmap_new(drawing->drawing_area->window,
 990                                    drawing->width + SAFETY,
 991                                    drawing->height,
 992                                      -1);
 993
 994   gtk_widget_set_size_request(drawing->drawing_area,
 995                              -1,
 996                              drawing->height);
 997   gtk_widget_queue_resize_no_redraw(drawing->drawing_area);
 998
 999   /* ask for the buffer to be redrawn */
1000   gtk_widget_queue_draw_area ( drawing->drawing_area,
1001                                0, 0,
1002                                drawing->width, drawing->height);
1003 }
1004
1005
1006 /* Insert a square corresponding to a new process in the list */
1007 /* Applies to whole drawing->width */
1008 void drawing_insert_square(Drawing_t *drawing,
1009         guint y,
1010         guint height)
1011 {
1012   //GdkRectangle update_rect;
1013
1014   /* Allocate a new pixmap with new height */
1015   GdkPixmap *pixmap = gdk_pixmap_new(drawing->drawing_area->window,
1016         drawing->width + SAFETY,
1017         drawing->height + height,
1018         -1);
1019
1020   /* Copy the high region */
1021   gdk_draw_drawable (pixmap,
1022     drawing->drawing_area->style->black_gc,
1023     drawing->pixmap,
1024     0, 0,
1025     0, 0,
1026     drawing->width + SAFETY, y);
1027
1028
1029
1030
1031   /* add an empty square */
1032   gdk_draw_rectangle (pixmap,
1033     drawing->drawing_area->style->black_gc,
1034     TRUE,
1035     0, y,
1036     drawing->width + SAFETY,  // do not overlap
1037     height);
1038
1039
1040
1041   /* copy the bottom of the region */
1042   gdk_draw_drawable (pixmap,
1043     drawing->drawing_area->style->black_gc,
1044     drawing->pixmap,
1045     0, y,
1046     0, y + height,
1047     drawing->width+SAFETY, drawing->height - y);
1048
1049
1050   if (drawing->pixmap)
1051     gdk_pixmap_unref(drawing->pixmap);
1052
1053   drawing->pixmap = pixmap;
1054
1055   if(drawing->height==1) drawing->height = height;
1056   else drawing->height += height;
1057
1058   gtk_widget_set_size_request(drawing->drawing_area,
1059                              -1,
1060                              drawing->height);
1061   gtk_widget_queue_resize_no_redraw(drawing->drawing_area);
1062
1063   /* ask for the buffer to be redrawn */
1064   gtk_widget_queue_draw_area ( drawing->drawing_area,
1065                                0, y,
1066                                drawing->width, drawing->height-y);
1067 }
1068
1069
1070 /* Remove a square corresponding to a removed process in the list */
1071 void drawing_remove_square(Drawing_t *drawing,
1072         guint y,
1073         guint height)
1074 {
1075   GdkPixmap *pixmap;
1076
1077   if(drawing->height == height) {
1078     pixmap = gdk_pixmap_new(
1079         drawing->drawing_area->window,
1080         drawing->width + SAFETY,
1081         1,
1082         -1);
1083     drawing->height=1;
1084   } else {
1085     /* Allocate a new pixmap with new height */
1086      pixmap = gdk_pixmap_new(
1087         drawing->drawing_area->window,
1088         drawing->width + SAFETY,
1089         drawing->height - height,
1090         -1);
1091
1092     /* Copy the high region */
1093     gdk_draw_drawable (pixmap,
1094       drawing->drawing_area->style->black_gc,
1095       drawing->pixmap,
1096       0, 0,
1097       0, 0,
1098       drawing->width + SAFETY, y);
1099
1100     /* Copy up the bottom of the region */
1101     gdk_draw_drawable (pixmap,
1102       drawing->drawing_area->style->black_gc,
1103       drawing->pixmap,
1104       0, y + height,
1105       0, y,
1106       drawing->width, drawing->height - y - height);
1107
1108     drawing->height-=height;
1109   }
1110
1111   if (drawing->pixmap)
1112     gdk_pixmap_unref(drawing->pixmap);
1113
1114   drawing->pixmap = pixmap;
1115
1116   gtk_widget_set_size_request(drawing->drawing_area,
1117                              -1,
1118                              drawing->height);
1119   gtk_widget_queue_resize_no_redraw(drawing->drawing_area);
1120   /* ask for the buffer to be redrawn */
1121   gtk_widget_queue_draw_area ( drawing->drawing_area,
1122                                0, y,
1123                                drawing->width, MAX(drawing->height-y, 1));
1124 }
1125
1126 void drawing_update_ruler(Drawing_t *drawing, TimeWindow *time_window)
1127 {
1128   GtkRequisition req;
1129   GdkRectangle rect;
1130
1131   req.width = drawing->ruler->allocation.width;
1132   req.height = drawing->ruler->allocation.height;
1133
1134
1135   rect.x = 0;
1136   rect.y = 0;
1137   rect.width = req.width;
1138   rect.height = req.height;
1139
1140   gtk_widget_queue_draw(drawing->ruler);
1141   //gtk_widget_draw( drawing->ruler, &rect);
1142 }
1143
1144 /* Redraw the ruler */
1145 static gboolean
1146 expose_ruler( GtkWidget *widget, GdkEventExpose *event, gpointer user_data )
1147 {
1148   Drawing_t *drawing = (Drawing_t*)user_data;
1149   TimeWindow time_window = lttvwindow_get_time_window(drawing->control_flow_data->tab);
1150   gchar text[255];
1151
1152   PangoContext *context;
1153   PangoLayout *layout;
1154   PangoAttribute *attribute;
1155   PangoFontDescription *FontDesc;
1156   gint Font_Size;
1157   PangoRectangle ink_rect;
1158   guint global_width=0;
1159   GdkColor foreground = { 0, 0, 0, 0 };
1160   GdkColor background = { 0, 0xffff, 0xffff, 0xffff };
1161
1162   LttTime window_end = time_window.end_time;
1163   LttTime half_width =
1164     ltt_time_div(time_window.time_width,2.0);
1165   LttTime window_middle =
1166     ltt_time_add(half_width,
1167                  time_window.start_time);
1168   g_debug("ruler expose event");
1169
1170   gdk_draw_rectangle (drawing->ruler->window,
1171           drawing->ruler->style->white_gc,
1172           TRUE,
1173           event->area.x, event->area.y,
1174           event->area.width,
1175           event->area.height);
1176
1177    GdkGC *gc = gdk_gc_new(drawing->ruler->window);
1178    gdk_gc_copy(gc, drawing->ruler->style->black_gc);
1179    gdk_gc_set_line_attributes(gc,
1180                                2,
1181                                GDK_LINE_SOLID,
1182                                GDK_CAP_BUTT,
1183                                GDK_JOIN_MITER);
1184   gdk_draw_line (drawing->ruler->window,
1185                   gc,
1186                   event->area.x, 1,
1187                   event->area.x + event->area.width, 1);
1188
1189
1190   snprintf(text, 255, "%lus\n%luns",
1191     time_window.start_time.tv_sec,
1192     time_window.start_time.tv_nsec);
1193
1194   layout = gtk_widget_create_pango_layout(drawing->drawing_area, NULL);
1195
1196   context = pango_layout_get_context(layout);
1197   FontDesc = pango_context_get_font_description(context);
1198
1199   pango_font_description_set_size(FontDesc, 6*PANGO_SCALE);
1200   pango_layout_context_changed(layout);
1201
1202   pango_layout_set_text(layout, text, -1);
1203   pango_layout_get_pixel_extents(layout, &ink_rect, NULL);
1204   global_width += ink_rect.width;
1205
1206   gdk_draw_layout_with_colors(drawing->ruler->window,
1207       gc,
1208       0,
1209       6,
1210       layout, &foreground, &background);
1211
1212   gdk_gc_set_line_attributes(gc,
1213                              2,
1214                              GDK_LINE_SOLID,
1215                              GDK_CAP_ROUND,
1216                              GDK_JOIN_ROUND);
1217
1218   gdk_draw_line (drawing->ruler->window,
1219                    gc,
1220                    1, 1,
1221                    1, 7);
1222
1223
1224   snprintf(text, 255, "%lus\n%luns", window_end.tv_sec,
1225                                      window_end.tv_nsec);
1226
1227   pango_layout_set_text(layout, text, -1);
1228   pango_layout_get_pixel_extents(layout, &ink_rect, NULL);
1229   global_width += ink_rect.width;
1230
1231   if(global_width <= drawing->ruler->allocation.width)
1232   {
1233     gdk_draw_layout_with_colors(drawing->ruler->window,
1234       gc,
1235       drawing->ruler->allocation.width - ink_rect.width,
1236       6,
1237       layout, &foreground, &background);
1238
1239     gdk_gc_set_line_attributes(gc,
1240                                2,
1241                                GDK_LINE_SOLID,
1242                                GDK_CAP_ROUND,
1243                                GDK_JOIN_ROUND);
1244
1245     gdk_draw_line (drawing->ruler->window,
1246                    gc,
1247                    drawing->ruler->allocation.width-1, 1,
1248                    drawing->ruler->allocation.width-1, 7);
1249   }
1250
1251
1252   snprintf(text, 255, "%lus\n%luns", window_middle.tv_sec,
1253                                      window_middle.tv_nsec);
1254
1255   pango_layout_set_text(layout, text, -1);
1256   pango_layout_get_pixel_extents(layout, &ink_rect, NULL);
1257   global_width += ink_rect.width;
1258
1259   if(global_width <= drawing->ruler->allocation.width)
1260   {
1261     gdk_draw_layout_with_colors(drawing->ruler->window,
1262       gc,
1263       (drawing->ruler->allocation.width - ink_rect.width)/2,
1264       6,
1265       layout, &foreground, &background);
1266
1267     gdk_gc_set_line_attributes(gc,
1268                                2,
1269                                GDK_LINE_SOLID,
1270                                GDK_CAP_ROUND,
1271                                GDK_JOIN_ROUND);
1272
1273     gdk_draw_line (drawing->ruler->window,
1274                    gc,
1275                    drawing->ruler->allocation.width/2, 1,
1276                    drawing->ruler->allocation.width/2, 7);
1277
1278
1279
1280
1281   }
1282
1283   gdk_gc_unref(gc);
1284   g_object_unref(layout);
1285
1286   return FALSE;
1287 }
1288
1289
1290 /* notify mouse on ruler */
1291 static gboolean
1292 motion_notify_ruler(GtkWidget *widget, GdkEventMotion *event, gpointer user_data)
1293 {
1294   //g_debug("motion");
1295   //eventually follow mouse and show time here
1296 }