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
  22 #include <lttv/lttv.h>
  23 #include <lttv/tracecontext.h>
  24 #include <lttvwindow/lttvwindow.h>
  25 #include <lttv/state.h>
  26 #include <lttv/hook.h>
  27
  28 #include "drawing.h"
  29 #include "eventhooks.h"
  30 #include "cfv.h"
  31 #include "cfv-private.h"
  32
  33 #define g_info(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_INFO, format)
  34 #define g_debug(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, format)
  35
  36 /*****************************************************************************
  37  *                              drawing functions                            *
  38  *****************************************************************************/
  39
  40 static gboolean
  41 expose_ruler( GtkWidget *widget, GdkEventExpose *event, gpointer user_data );
  42
  43 static gboolean
  44 motion_notify_ruler(GtkWidget *widget, GdkEventMotion *event, gpointer user_data);
  45
  46
  47 //FIXME Colors will need to be dynamic. Graphic context part not done so far.
  48 typedef enum
  49 {
  50   RED,
  51   GREEN,
  52   BLUE,
  53   WHITE,
  54   BLACK
  55
  56 } ControlFlowColors;
  57
  58 /* Vector of unallocated colors */
  59 static GdkColor CF_Colors [] =
  60 {
  61   { 0, 0xffff, 0x0000, 0x0000 },  // RED
  62   { 0, 0x0000, 0xffff, 0x0000 },  // GREEN
  63   { 0, 0x0000, 0x0000, 0xffff },  // BLUE
  64   { 0, 0xffff, 0xffff, 0xffff },  // WHITE
  65   { 0, 0x0000, 0x0000, 0x0000 } // BLACK
  66 };
  67
  68
  69 /* Function responsible for updating the exposed area.
  70  * It must do an events request to the lttvwindow API to ask for this update.
  71  * Note : this function cannot clear the background, because it may
  72  * erase drawing already present (SAFETY).
  73  */
  74 void drawing_data_request(Drawing_t *drawing,
  75       GdkPixmap **pixmap,
  76       gint x, gint y,
  77       gint width,
  78       gint height)
  79 {
  80   if(width < 0) return ;
  81   if(height < 0) return ;
  82
  83   if(drawing->gc == NULL) {
  84     drawing->gc = gdk_gc_new(drawing->drawing_area->window);
  85     gdk_gc_copy(drawing->gc, drawing->drawing_area->style->black_gc);
  86   }
  87
  88
  89
  90   TimeWindow time_window =
  91               lttvwindow_get_time_window(drawing->control_flow_data->tab);
  92
  93   ControlFlowData *control_flow_data = drawing->control_flow_data;
  94   Tab *tab = control_flow_data->tab;
  95   //    (ControlFlowData*)g_object_get_data(
  96   //               G_OBJECT(drawing->drawing_area), "control_flow_data");
  97
  98   LttTime start, time_end;
  99   LttTime window_end = ltt_time_add(time_window.time_width,
 100                                     time_window.start_time);
 101
 102   g_debug("req : window start_time : %u, %u", time_window.start_time.tv_sec,
 103                                        time_window.start_time.tv_nsec);
 104
 105   g_debug("req : window time width : %u, %u", time_window.time_width.tv_sec,
 106                                        time_window.time_width.tv_nsec);
 107
 108   g_debug("req : window_end : %u, %u", window_end.tv_sec,
 109                                        window_end.tv_nsec);
 110
 111   g_debug("x is : %i, x+width is : %i", x, x+width);
 112
 113   convert_pixels_to_time(drawing->width, x,
 114         time_window.start_time,
 115         window_end,
 116         &start);
 117
 118   convert_pixels_to_time(drawing->width, x+width,
 119         time_window.start_time,
 120         window_end,
 121         &time_end);
 122
 123   EventsRequest *events_request = g_new(EventsRequest, 1);
 124   // Create the hooks
 125   LttvHooks *event = lttv_hooks_new();
 126   LttvHooks *before_chunk_traceset = lttv_hooks_new();
 127   LttvHooks *after_chunk_traceset = lttv_hooks_new();
 128   LttvHooks *before_request_hook = lttv_hooks_new();
 129   LttvHooks *after_request_hook = lttv_hooks_new();
 130
 131   lttv_hooks_add(before_chunk_traceset,
 132                  before_chunk,
 133                  events_request,
 134                  LTTV_PRIO_DEFAULT);
 135
 136   lttv_hooks_add(after_chunk_traceset,
 137                  after_chunk,
 138                  events_request,
 139                  LTTV_PRIO_DEFAULT);
 140
 141   lttv_hooks_add(before_request_hook,
 142                  before_request,
 143                  events_request,
 144                  LTTV_PRIO_DEFAULT);
 145
 146   lttv_hooks_add(after_request_hook,
 147                  after_request,
 148                  events_request,
 149                  LTTV_PRIO_DEFAULT);
 150
 151
 152   lttv_hooks_add(event,
 153                  draw_before_hook,
 154                  events_request,
 155                  LTTV_PRIO_STATE-5);
 156   lttv_hooks_add(event,
 157                  draw_after_hook,
 158                  events_request,
 159                  LTTV_PRIO_STATE+5);
 160
 161   // Fill the events request
 162   events_request->owner = control_flow_data;
 163   events_request->viewer_data = control_flow_data;
 164   events_request->servicing = FALSE;
 165   events_request->start_time = start;
 166   events_request->start_position = NULL;
 167   events_request->stop_flag = FALSE;
 168   events_request->end_time = time_end;
 169   events_request->num_events = G_MAXUINT;
 170   events_request->end_position = NULL;
 171   events_request->before_chunk_traceset = before_chunk_traceset;
 172   events_request->before_chunk_trace = NULL;
 173   events_request->before_chunk_tracefile = NULL;
 174   events_request->event = event;
 175   events_request->event_by_id = NULL;
 176   events_request->after_chunk_tracefile = NULL;
 177   events_request->after_chunk_trace = NULL;
 178   events_request->after_chunk_traceset = after_chunk_traceset;
 179   events_request->before_request = before_request_hook;
 180   events_request->after_request = after_request_hook;
 181
 182   g_debug("req : start : %u, %u", start.tv_sec,
 183                                       start.tv_nsec);
 184
 185   g_debug("req : end : %u, %u", time_end.tv_sec,
 186                                      time_end.tv_nsec);
 187
 188   lttvwindow_events_request_remove_all(tab,
 189                                        control_flow_data);
 190   lttvwindow_events_request(tab, events_request);
 191 }
 192
 193
 194 static void set_last_start(gpointer key, gpointer value, gpointer user_data)
 195 {
 196   ProcessInfo *process_info = (ProcessInfo*)key;
 197   HashedProcessData *hashed_process_data = (HashedProcessData*)value;
 198   guint x = (guint)user_data;
 199
 200   hashed_process_data->x = x;
 201
 202   return;
 203 }
 204
 205 void drawing_data_request_begin(EventsRequest *events_request, LttvTracesetState *tss)
 206 {
 207   g_debug("Begin of data request");
 208   ControlFlowData *cfd = events_request->viewer_data;
 209   LttvTracesetContext *tsc = LTTV_TRACESET_CONTEXT(tss);
 210   TimeWindow time_window =
 211     lttvwindow_get_time_window(cfd->tab);
 212   LttTime end_time = ltt_time_add(time_window.start_time,
 213                                     time_window.time_width);
 214   guint width = cfd->drawing->width;
 215   guint x=0;
 216
 217   cfd->drawing->last_start = events_request->start_time;
 218
 219   convert_time_to_pixels(
 220           time_window.start_time,
 221           end_time,
 222           events_request->start_time,
 223           width,
 224           &x);
 225
 226   g_hash_table_foreach(cfd->process_list->process_hash, set_last_start,
 227                             (gpointer)x);
 228 }
 229
 230 void drawing_chunk_begin(EventsRequest *events_request, LttvTracesetState *tss)
 231 {
 232   g_debug("Begin of chunk");
 233   ControlFlowData *cfd = events_request->viewer_data;
 234   LttvTracesetContext *tsc = LTTV_TRACESET_CONTEXT(tss);
 235   LttTime current_time = lttv_traceset_context_get_current_tfc(tsc)->timestamp;
 236
 237   cfd->drawing->last_start = current_time;
 238 }
 239
 240
 241 void drawing_request_expose(EventsRequest *events_request,
 242                             LttvTracesetState *tss,
 243                             LttTime end_time)
 244 {
 245   gint x, x_end, width;
 246
 247   ControlFlowData *cfd = events_request->viewer_data;
 248   LttvTracesetContext *tsc = LTTV_TRACESET_CONTEXT(tss);
 249   Drawing_t *drawing = cfd->drawing;
 250
 251   TimeWindow time_window =
 252         lttvwindow_get_time_window(cfd->tab);
 253
 254   g_debug("request expose");
 255
 256   LttTime window_end = ltt_time_add(time_window.time_width,
 257                                     time_window.start_time);
 258
 259   convert_time_to_pixels(
 260         time_window.start_time,
 261         window_end,
 262         cfd->drawing->last_start,
 263         drawing->width,
 264         &x);
 265
 266   convert_time_to_pixels(
 267         time_window.start_time,
 268         window_end,
 269         end_time,
 270         drawing->width,
 271         &x_end);
 272
 273   width = x_end - x;
 274
 275   drawing->damage_begin = x+width;
 276   //drawing->damage_end = drawing->width;
 277
 278   /* ask for the buffer to be redrawn */
 279
 280   //gtk_widget_queue_draw_area ( drawing->drawing_area,
 281   //                             0, 0,
 282   //                             drawing->width, drawing->height);
 283
 284   /* FIXME
 285    * will need more precise pixel_to_time and time_to_pixel conversion
 286    * functions to redraw only the needed area. */
 287   gtk_widget_queue_draw_area ( drawing->drawing_area,
 288                                x, 0,
 289                                width, drawing->height);
 290
 291 }
 292
 293
 294 /* Callbacks */
 295
 296
 297 /* Create a new backing pixmap of the appropriate size */
 298 /* As the scaling will always change, it's of no use to copy old
 299  * pixmap.
 300  *
 301  * Only change the size if width changes. The height is specified and changed
 302  * when process ID are added or removed from the process list.
 303  */
 304 static gboolean
 305 configure_event( GtkWidget *widget, GdkEventConfigure *event,
 306     gpointer user_data)
 307 {
 308   Drawing_t *drawing = (Drawing_t*)user_data;
 309
 310
 311   /* First, get the new time interval of the main window */
 312   /* we assume (see documentation) that the main window
 313    * has updated the time interval before this configure gets
 314    * executed.
 315    */
 316   //lttvwindow_get_time_window(drawing->control_flow_data->mw,
 317   //      &drawing->control_flow_data->time_window);
 318
 319   /* New pixmap, size of the configure event */
 320   //GdkPixmap *pixmap = gdk_pixmap_new(widget->window,
 321   //      widget->allocation.width + SAFETY,
 322   //      widget->allocation.height + SAFETY,
 323   //      -1);
 324
 325   if(widget->allocation.width != drawing->width) {
 326     g_debug("drawing configure event");
 327     g_debug("New alloc draw size : %i by %i",widget->allocation.width,
 328                                     widget->allocation.height);
 329
 330
 331     if (drawing->pixmap)
 332       gdk_pixmap_unref(drawing->pixmap);
 333
 334     drawing->width = widget->allocation.width;
 335     //drawing->height = widget->allocation.height;
 336
 337     drawing->pixmap = gdk_pixmap_new(widget->window,
 338                                      drawing->width + SAFETY,
 339                                      drawing->height,
 340                                      -1);
 341     //ProcessList_get_height
 342     // (GuiControlFlow_get_process_list(drawing->control_flow_data)),
 343
 344
 345     // Clear the image
 346     gdk_draw_rectangle (drawing->pixmap,
 347           widget->style->black_gc,
 348           TRUE,
 349           0, 0,
 350           drawing->width+SAFETY,
 351           drawing->height);
 352
 353     //g_info("init data request");
 354
 355
 356     /* Initial data request */
 357     /* no, do initial data request in the expose event */
 358     // Do not need to ask for data of 1 pixel : not synchronized with
 359     // main window time at this moment.
 360     //drawing_data_request(drawing, &drawing->pixmap, 0, 0,
 361     //    widget->allocation.width,
 362     //    widget->allocation.height);
 363
 364     //drawing->width = widget->allocation.width;
 365     //drawing->height = widget->allocation.height;
 366
 367     drawing->damage_begin = 0;
 368     drawing->damage_end = widget->allocation.width;
 369
 370     if(drawing->damage_begin < drawing->damage_end)
 371     {
 372       drawing_data_request(drawing,
 373                            &drawing->pixmap,
 374                            drawing->damage_begin,
 375                            0,
 376                            drawing->damage_end - drawing->damage_begin,
 377                            drawing->height);
 378     }
 379   }
 380   return TRUE;
 381 }
 382
 383
 384 /* Redraw the screen from the backing pixmap */
 385 static gboolean
 386 expose_event( GtkWidget *widget, GdkEventExpose *event, gpointer user_data )
 387 {
 388   Drawing_t *drawing = (Drawing_t*)user_data;
 389
 390   ControlFlowData *control_flow_data =
 391       (ControlFlowData*)g_object_get_data(
 392                 G_OBJECT(widget),
 393                 "control_flow_data");
 394
 395   TimeWindow time_window =
 396       lttvwindow_get_time_window(control_flow_data->tab);
 397   LttTime current_time =
 398       lttvwindow_get_current_time(control_flow_data->tab);
 399
 400   guint cursor_x=0;
 401
 402   LttTime window_end = ltt_time_add(time_window.time_width,
 403                                     time_window.start_time);
 404
 405   convert_time_to_pixels(
 406         time_window.start_time,
 407         window_end,
 408         current_time,
 409         drawing->width,
 410         &cursor_x);
 411
 412
 413   /* update the screen from the pixmap buffer */
 414   gdk_draw_pixmap(widget->window,
 415       widget->style->fg_gc[GTK_WIDGET_STATE (widget)],
 416       drawing->pixmap,
 417       event->area.x, event->area.y,
 418       event->area.x, event->area.y,
 419       event->area.width, event->area.height);
 420
 421
 422   /* Draw the dotted lines */
 423
 424   if(drawing->dotted_gc == NULL) {
 425
 426     drawing->dotted_gc = gdk_gc_new(drawing->drawing_area->window);
 427     gdk_gc_copy(drawing->dotted_gc, widget->style->white_gc);
 428
 429     gint8 dash_list[] = { 1, 2 };
 430     gdk_gc_set_line_attributes(drawing->dotted_gc,
 431                                1,
 432                                GDK_LINE_ON_OFF_DASH,
 433                                GDK_CAP_BUTT,
 434                                GDK_JOIN_MITER);
 435     gdk_gc_set_dashes(drawing->dotted_gc,
 436                       0,
 437                       dash_list,
 438                       2);
 439   }
 440
 441   drawing_draw_line(NULL, widget->window,
 442                 cursor_x, 0,
 443                 cursor_x, drawing->height,
 444                 drawing->dotted_gc);
 445   return FALSE;
 446 }
 447
 448 static gboolean
 449 after_expose_event( GtkWidget *widget, GdkEventExpose *event, gpointer user_data )
 450 {
 451   //g_assert(0);
 452   g_debug("AFTER EXPOSE");
 453
 454   return FALSE;
 455
 456
 457 }
 458
 459
 460 /* mouse click */
 461 static gboolean
 462 button_press_event( GtkWidget *widget, GdkEventButton *event, gpointer user_data )
 463 {
 464   ControlFlowData *control_flow_data =
 465       (ControlFlowData*)g_object_get_data(
 466                 G_OBJECT(widget),
 467                 "control_flow_data");
 468   Drawing_t *drawing = control_flow_data->drawing;
 469   TimeWindow time_window =
 470                lttvwindow_get_time_window(control_flow_data->tab);
 471
 472   g_debug("click");
 473   if(event->button == 1)
 474   {
 475     LttTime time;
 476
 477     LttTime window_end = ltt_time_add(time_window.time_width,
 478                                       time_window.start_time);
 479
 480
 481     /* left mouse button click */
 482     g_debug("x click is : %f", event->x);
 483
 484     convert_pixels_to_time(drawing->width, (guint)event->x,
 485         time_window.start_time,
 486         window_end,
 487         &time);
 488
 489     lttvwindow_report_current_time(control_flow_data->tab, &time);
 490
 491   }
 492
 493   lttvwindow_report_focus(control_flow_data->tab,
 494            gtk_widget_get_parent(guicontrolflow_get_widget(control_flow_data)));
 495
 496   return FALSE;
 497 }
 498
 499 static gboolean
 500 scrollbar_size_allocate(GtkWidget *widget,
 501                         GtkAllocation *allocation,
 502                         gpointer user_data)
 503 {
 504   Drawing_t *drawing = (Drawing_t*)user_data;
 505
 506   gtk_widget_set_size_request(drawing->padding, allocation->width, -1);
 507   //gtk_widget_queue_resize(drawing->padding);
 508   //gtk_widget_queue_resize(drawing->ruler);
 509   gtk_container_check_resize(GTK_CONTAINER(drawing->ruler_hbox));
 510   return 0;
 511 }
 512
 513
 514
 515 Drawing_t *drawing_construct(ControlFlowData *control_flow_data)
 516 {
 517   Drawing_t *drawing = g_new(Drawing_t, 1);
 518
 519   drawing->control_flow_data = control_flow_data;
 520
 521   drawing->vbox = gtk_vbox_new(FALSE, 1);
 522
 523
 524   drawing->ruler_hbox = gtk_hbox_new(FALSE, 1);
 525   drawing->ruler = gtk_drawing_area_new ();
 526   gtk_widget_add_events(drawing->ruler, GDK_BUTTON_PRESS_MASK);
 527   //gtk_widget_set_size_request(drawing->ruler, -1, 27);
 528
 529   drawing->padding = gtk_drawing_area_new ();
 530   gtk_widget_add_events(drawing->padding, GDK_BUTTON_PRESS_MASK);
 531   //gtk_widget_set_size_request(drawing->padding, -1, 27);
 532   gtk_box_pack_start(GTK_BOX(drawing->ruler_hbox), drawing->ruler,
 533                      TRUE, TRUE, 0);
 534   gtk_box_pack_end(GTK_BOX(drawing->ruler_hbox), drawing->padding,
 535                      FALSE, FALSE, 0);
 536
 537
 538
 539   drawing->drawing_area = gtk_drawing_area_new ();
 540
 541   drawing->gc = NULL;
 542
 543   drawing->hbox = gtk_hbox_new(FALSE, 1);
 544   drawing->viewport = gtk_viewport_new(NULL, control_flow_data->v_adjust);
 545   drawing->scrollbar = gtk_vscrollbar_new(control_flow_data->v_adjust);
 546   gtk_box_pack_start(GTK_BOX(drawing->hbox), drawing->viewport,
 547                      TRUE, TRUE, 0);
 548   gtk_box_pack_end(GTK_BOX(drawing->hbox), drawing->scrollbar,
 549                      FALSE, FALSE, 0);
 550
 551   //drawing->scrolled_window =
 552   //    gtk_scrolled_window_new (NULL,
 553   //    control_flow_data->v_adjust);
 554
 555   //gtk_scrolled_window_set_policy(
 556   //  GTK_SCROLLED_WINDOW(drawing->scrolled_window),
 557   //  GTK_POLICY_NEVER,
 558   //  GTK_POLICY_AUTOMATIC);
 559
 560   gtk_container_add(GTK_CONTAINER(drawing->viewport),
 561                     drawing->drawing_area);
 562   //gtk_scrolled_window_add_with_viewport(
 563   //  GTK_SCROLLED_WINDOW(drawing->scrolled_window),
 564   //  drawing->drawing_area);
 565
 566   gtk_box_pack_start(GTK_BOX(drawing->vbox), drawing->ruler_hbox,
 567                      FALSE, FALSE, 0);
 568   gtk_box_pack_end(GTK_BOX(drawing->vbox), drawing->hbox,
 569                    TRUE, TRUE, 0);
 570
 571   drawing->pango_layout =
 572     gtk_widget_create_pango_layout(drawing->drawing_area, NULL);
 573
 574   drawing->dotted_gc = NULL;
 575
 576   drawing->height = 1;
 577   drawing->width = 1;
 578   drawing->depth = 0;
 579
 580   drawing->damage_begin = 0;
 581   drawing->damage_end = 0;
 582
 583   //gtk_widget_set_size_request(drawing->drawing_area->window, 50, 50);
 584   g_object_set_data_full(
 585       G_OBJECT(drawing->drawing_area),
 586       "Link_drawing_Data",
 587       drawing,
 588       (GDestroyNotify)drawing_destroy);
 589
 590   g_object_set_data(
 591       G_OBJECT(drawing->ruler),
 592       "drawing",
 593       drawing);
 594
 595
 596   //gtk_widget_modify_bg( drawing->drawing_area,
 597   //      GTK_STATE_NORMAL,
 598   //      &CF_Colors[BLACK]);
 599
 600   //gdk_window_get_geometry(drawing->drawing_area->window,
 601   //    NULL, NULL,
 602   //    &(drawing->width),
 603   //    &(drawing->height),
 604   //    -1);
 605
 606   //drawing->pixmap = gdk_pixmap_new(
 607   //    drawing->drawing_area->window,
 608   //    drawing->width,
 609   //    drawing->height,
 610   //    drawing->depth);
 611
 612   drawing->pixmap = NULL;
 613
 614 //  drawing->pixmap = gdk_pixmap_new(drawing->drawing_area->window,
 615 //        drawing->drawing_area->allocation.width,
 616 //        drawing->drawing_area->allocation.height,
 617 //        -1);
 618
 619   gtk_widget_add_events(drawing->drawing_area, GDK_BUTTON_PRESS_MASK);
 620
 621   g_signal_connect (G_OBJECT(drawing->drawing_area),
 622         "configure_event",
 623         G_CALLBACK (configure_event),
 624         (gpointer)drawing);
 625
 626   g_signal_connect (G_OBJECT(drawing->ruler),
 627         "expose_event",
 628         G_CALLBACK(expose_ruler),
 629         (gpointer)drawing);
 630
 631   gtk_widget_add_events(drawing->ruler, GDK_POINTER_MOTION_MASK);
 632
 633   g_signal_connect (G_OBJECT(drawing->ruler),
 634         "motion-notify-event",
 635         G_CALLBACK(motion_notify_ruler),
 636         (gpointer)drawing);
 637
 638
 639   g_signal_connect (G_OBJECT(drawing->scrollbar),
 640         "size-allocate",
 641         G_CALLBACK(scrollbar_size_allocate),
 642         (gpointer)drawing);
 643
 644
 645
 646   g_signal_connect (G_OBJECT(drawing->drawing_area),
 647         "expose_event",
 648         G_CALLBACK (expose_event),
 649         (gpointer)drawing);
 650
 651   g_signal_connect_after (G_OBJECT(drawing->drawing_area),
 652         "expose_event",
 653         G_CALLBACK (after_expose_event),
 654         (gpointer)drawing);
 655
 656   g_signal_connect (G_OBJECT(drawing->drawing_area),
 657         "button-press-event",
 658         G_CALLBACK (button_press_event),
 659         (gpointer)drawing);
 660
 661   gtk_widget_show(drawing->ruler);
 662   gtk_widget_show(drawing->padding);
 663   gtk_widget_show(drawing->ruler_hbox);
 664
 665   gtk_widget_show(drawing->drawing_area);
 666   //gtk_widget_show(drawing->scrolled_window);
 667   gtk_widget_show(drawing->viewport);
 668   gtk_widget_show(drawing->scrollbar);
 669   gtk_widget_show(drawing->hbox);
 670
 671
 672   return drawing;
 673 }
 674
 675 void drawing_destroy(Drawing_t *drawing)
 676 {
 677   g_info("drawing_destroy %p", drawing);
 678   // Do not unref here, Drawing_t destroyed by it's widget.
 679   //g_object_unref( G_OBJECT(drawing->drawing_area));
 680   if(drawing->gc != NULL)
 681     gdk_gc_unref(drawing->gc);
 682
 683   g_free(drawing->pango_layout);
 684   if(!drawing->dotted_gc) gdk_gc_unref(drawing->dotted_gc);
 685   g_free(drawing);
 686   g_info("drawing_destroy end");
 687 }
 688
 689 GtkWidget *drawing_get_drawing_area(Drawing_t *drawing)
 690 {
 691   return drawing->drawing_area;
 692 }
 693
 694 GtkWidget *drawing_get_widget(Drawing_t *drawing)
 695 {
 696   return drawing->vbox;
 697 }
 698
 699 /* convert_pixels_to_time
 700  *
 701  * Convert from window pixel and time interval to an absolute time.
 702  */
 703 //FIXME : could need ceil and floor versions of this function
 704 void convert_pixels_to_time(
 705     gint width,
 706     guint x,
 707     LttTime window_time_begin,
 708     LttTime window_time_end,
 709     LttTime *time)
 710 {
 711   LttTime window_time_interval;
 712
 713   window_time_interval = ltt_time_sub(window_time_end,
 714             window_time_begin);
 715   *time = ltt_time_mul(window_time_interval, (x/(float)width));
 716   *time = ltt_time_add(window_time_begin, *time);
 717 }
 718
 719 //FIXME : could need ceil and floor versions of this function
 720
 721 void convert_time_to_pixels(
 722     LttTime window_time_begin,
 723     LttTime window_time_end,
 724     LttTime time,
 725     int width,
 726     guint *x)
 727 {
 728   LttTime window_time_interval;
 729   double interval_double, time_double;
 730
 731   window_time_interval = ltt_time_sub(window_time_end,window_time_begin);
 732
 733   time = ltt_time_sub(time, window_time_begin);
 734
 735   /* LttTime to double conversions here should really be under 4000 hours.. */
 736   interval_double = ltt_time_to_double(window_time_interval);
 737   time_double = ltt_time_to_double(time);
 738
 739   *x = (guint)(time_double/interval_double * width);
 740
 741 }
 742
 743 void drawing_draw_line( Drawing_t *drawing,
 744       GdkPixmap *pixmap,
 745       guint x1, guint y1,
 746       guint x2, guint y2,
 747       GdkGC *GC)
 748 {
 749   gdk_draw_line (pixmap,
 750       GC,
 751       x1, y1, x2, y2);
 752 }
 753
 754 void drawing_clear(Drawing_t *drawing)
 755 {
 756   if (drawing->pixmap)
 757     gdk_pixmap_unref(drawing->pixmap);
 758
 759   drawing->height = 1;
 760   /* Allocate a new pixmap with new height */
 761   drawing->pixmap = gdk_pixmap_new(drawing->drawing_area->window,
 762                                    drawing->width + SAFETY,
 763                                    drawing->height,
 764                                      -1);
 765
 766   gtk_widget_set_size_request(drawing->drawing_area,
 767                              -1,
 768                              drawing->height);
 769   gtk_widget_queue_resize_no_redraw(drawing->drawing_area);
 770
 771   /* ask for the buffer to be redrawn */
 772   gtk_widget_queue_draw_area ( drawing->drawing_area,
 773                                0, 0,
 774                                drawing->width, drawing->height);
 775 }
 776
 777
 778 /* Insert a square corresponding to a new process in the list */
 779 /* Applies to whole drawing->width */
 780 void drawing_insert_square(Drawing_t *drawing,
 781         guint y,
 782         guint height)
 783 {
 784   //GdkRectangle update_rect;
 785
 786   /* Allocate a new pixmap with new height */
 787   GdkPixmap *pixmap = gdk_pixmap_new(drawing->drawing_area->window,
 788         drawing->width + SAFETY,
 789         drawing->height + height,
 790         -1);
 791
 792   /* Copy the high region */
 793   gdk_draw_drawable (pixmap,
 794     drawing->drawing_area->style->black_gc,
 795     drawing->pixmap,
 796     0, 0,
 797     0, 0,
 798     drawing->width + SAFETY, y);
 799
 800
 801
 802
 803   /* add an empty square */
 804   gdk_draw_rectangle (pixmap,
 805     drawing->drawing_area->style->black_gc,
 806     TRUE,
 807     0, y,
 808     drawing->width + SAFETY,  // do not overlap
 809     height);
 810
 811
 812
 813   /* copy the bottom of the region */
 814   gdk_draw_drawable (pixmap,
 815     drawing->drawing_area->style->black_gc,
 816     drawing->pixmap,
 817     0, y,
 818     0, y + height,
 819     drawing->width+SAFETY, drawing->height - y);
 820
 821
 822   if (drawing->pixmap)
 823     gdk_pixmap_unref(drawing->pixmap);
 824
 825   drawing->pixmap = pixmap;
 826
 827   if(drawing->height==1) drawing->height = height;
 828   else drawing->height += height;
 829
 830   gtk_widget_set_size_request(drawing->drawing_area,
 831                              -1,
 832                              drawing->height);
 833   gtk_widget_queue_resize_no_redraw(drawing->drawing_area);
 834
 835   /* ask for the buffer to be redrawn */
 836   gtk_widget_queue_draw_area ( drawing->drawing_area,
 837                                0, y,
 838                                drawing->width, drawing->height-y);
 839 }
 840
 841
 842 /* Remove a square corresponding to a removed process in the list */
 843 void drawing_remove_square(Drawing_t *drawing,
 844         guint y,
 845         guint height)
 846 {
 847   GdkPixmap *pixmap;
 848
 849   if(drawing->height == height) {
 850     pixmap = gdk_pixmap_new(
 851         drawing->drawing_area->window,
 852         drawing->width + SAFETY,
 853         1,
 854         -1);
 855     drawing->height=1;
 856   } else {
 857     /* Allocate a new pixmap with new height */
 858      pixmap = gdk_pixmap_new(
 859         drawing->drawing_area->window,
 860         drawing->width + SAFETY,
 861         drawing->height - height,
 862         -1);
 863
 864     /* Copy the high region */
 865     gdk_draw_drawable (pixmap,
 866       drawing->drawing_area->style->black_gc,
 867       drawing->pixmap,
 868       0, 0,
 869       0, 0,
 870       drawing->width + SAFETY, y);
 871
 872     /* Copy up the bottom of the region */
 873     gdk_draw_drawable (pixmap,
 874       drawing->drawing_area->style->black_gc,
 875       drawing->pixmap,
 876       0, y + height,
 877       0, y,
 878       drawing->width, drawing->height - y - height);
 879
 880     drawing->height-=height;
 881   }
 882
 883   if (drawing->pixmap)
 884     gdk_pixmap_unref(drawing->pixmap);
 885
 886   drawing->pixmap = pixmap;
 887
 888   gtk_widget_set_size_request(drawing->drawing_area,
 889                              -1,
 890                              drawing->height);
 891   gtk_widget_queue_resize_no_redraw(drawing->drawing_area);
 892   /* ask for the buffer to be redrawn */
 893   gtk_widget_queue_draw_area ( drawing->drawing_area,
 894                                0, y,
 895                                drawing->width, MAX(drawing->height-y, 1));
 896 }
 897
 898 void drawing_update_ruler(Drawing_t *drawing, TimeWindow *time_window)
 899 {
 900   GtkRequisition req;
 901   GdkRectangle rect;
 902
 903   req.width = drawing->ruler->allocation.width;
 904   req.height = drawing->ruler->allocation.height;
 905
 906
 907   rect.x = 0;
 908   rect.y = 0;
 909   rect.width = req.width;
 910   rect.height = req.height;
 911
 912   gtk_widget_queue_draw(drawing->ruler);
 913   //gtk_widget_draw( drawing->ruler, &rect);
 914 }
 915
 916 /* Redraw the ruler */
 917 static gboolean
 918 expose_ruler( GtkWidget *widget, GdkEventExpose *event, gpointer user_data )
 919 {
 920   Drawing_t *drawing = (Drawing_t*)user_data;
 921   TimeWindow time_window = lttvwindow_get_time_window(drawing->control_flow_data->tab);
 922   gchar text[255];
 923
 924   PangoContext *context;
 925   PangoLayout *layout;
 926   PangoAttribute *attribute;
 927   PangoFontDescription *FontDesc;
 928   gint Font_Size;
 929   PangoRectangle ink_rect;
 930   guint global_width=0;
 931   GdkColor foreground = { 0, 0, 0, 0 };
 932   GdkColor background = { 0, 0xffff, 0xffff, 0xffff };
 933
 934   LttTime window_end =
 935     ltt_time_add(time_window.time_width,
 936                  time_window.start_time);
 937   LttTime half_width =
 938     ltt_time_div(time_window.time_width,2.0);
 939   LttTime window_middle =
 940     ltt_time_add(half_width,
 941                  time_window.start_time);
 942   g_debug("ruler expose event");
 943
 944   gdk_draw_rectangle (drawing->ruler->window,
 945           drawing->ruler->style->white_gc,
 946           TRUE,
 947           event->area.x, event->area.y,
 948           event->area.width,
 949           event->area.height);
 950
 951    GdkGC *gc = gdk_gc_new(drawing->ruler->window);
 952    gdk_gc_copy(gc, drawing->ruler->style->black_gc);
 953    gdk_gc_set_line_attributes(gc,
 954                                2,
 955                                GDK_LINE_SOLID,
 956                                GDK_CAP_BUTT,
 957                                GDK_JOIN_MITER);
 958   gdk_draw_line (drawing->ruler->window,
 959                   gc,
 960                   event->area.x, 1,
 961                   event->area.x + event->area.width, 1);
 962
 963
 964   snprintf(text, 255, "%lus\n%luns",
 965     time_window.start_time.tv_sec,
 966     time_window.start_time.tv_nsec);
 967
 968   layout = gtk_widget_create_pango_layout(drawing->drawing_area, NULL);
 969
 970   context = pango_layout_get_context(layout);
 971   FontDesc = pango_context_get_font_description(context);
 972
 973   pango_font_description_set_size(FontDesc, 6*PANGO_SCALE);
 974   pango_layout_context_changed(layout);
 975
 976   pango_layout_set_text(layout, text, -1);
 977   pango_layout_get_pixel_extents(layout, &ink_rect, NULL);
 978   global_width += ink_rect.width;
 979
 980   gdk_draw_layout_with_colors(drawing->ruler->window,
 981       gc,
 982       0,
 983       6,
 984       layout, &foreground, &background);
 985
 986   gdk_gc_set_line_attributes(gc,
 987                              2,
 988                              GDK_LINE_SOLID,
 989                              GDK_CAP_ROUND,
 990                              GDK_JOIN_ROUND);
 991
 992   gdk_draw_line (drawing->ruler->window,
 993                    gc,
 994                    1, 1,
 995                    1, 7);
 996
 997
 998   snprintf(text, 255, "%lus\n%luns", window_end.tv_sec,
 999                                      window_end.tv_nsec);
1000
1001   pango_layout_set_text(layout, text, -1);
1002   pango_layout_get_pixel_extents(layout, &ink_rect, NULL);
1003   global_width += ink_rect.width;
1004
1005   if(global_width <= drawing->ruler->allocation.width)
1006   {
1007     gdk_draw_layout_with_colors(drawing->ruler->window,
1008       gc,
1009       drawing->ruler->allocation.width - ink_rect.width,
1010       6,
1011       layout, &foreground, &background);
1012
1013     gdk_gc_set_line_attributes(gc,
1014                                2,
1015                                GDK_LINE_SOLID,
1016                                GDK_CAP_ROUND,
1017                                GDK_JOIN_ROUND);
1018
1019     gdk_draw_line (drawing->ruler->window,
1020                    gc,
1021                    drawing->ruler->allocation.width-1, 1,
1022                    drawing->ruler->allocation.width-1, 7);
1023   }
1024
1025
1026   snprintf(text, 255, "%lus\n%luns", window_middle.tv_sec,
1027                                      window_middle.tv_nsec);
1028
1029   pango_layout_set_text(layout, text, -1);
1030   pango_layout_get_pixel_extents(layout, &ink_rect, NULL);
1031   global_width += ink_rect.width;
1032
1033   if(global_width <= drawing->ruler->allocation.width)
1034   {
1035     gdk_draw_layout_with_colors(drawing->ruler->window,
1036       gc,
1037       (drawing->ruler->allocation.width - ink_rect.width)/2,
1038       6,
1039       layout, &foreground, &background);
1040
1041     gdk_gc_set_line_attributes(gc,
1042                                2,
1043                                GDK_LINE_SOLID,
1044                                GDK_CAP_ROUND,
1045                                GDK_JOIN_ROUND);
1046
1047     gdk_draw_line (drawing->ruler->window,
1048                    gc,
1049                    drawing->ruler->allocation.width/2, 1,
1050                    drawing->ruler->allocation.width/2, 7);
1051
1052
1053
1054
1055   }
1056
1057   gdk_gc_unref(gc);
1058   g_object_unref(layout);
1059
1060   return FALSE;
1061 }
1062
1063
1064 /* notify mouse on ruler */
1065 static gboolean
1066 motion_notify_ruler(GtkWidget *widget, GdkEventMotion *event, gpointer user_data)
1067 {
1068   //g_debug("motion");
1069   //eventually follow mouse and show time here
1070 }