cinelerra-5.1/plugins/tracer/tracerwindow.C

   1 /*
   2  * CINELERRA
   3  * Copyright (C) 2014 Adam Williams <broadcast at earthling dot net>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18  *
  19  */
  20
  21 #include "automation.h"
  22 #include "bcdisplayinfo.h"
  23 #include "clip.h"
  24 #include "tracer.h"
  25 #include "tracerwindow.h"
  26 #include "cstrdup.h"
  27 #include "cwindow.h"
  28 #include "cwindowgui.h"
  29 #include "edl.h"
  30 #include "edlsession.h"
  31 #include "language.h"
  32 #include "mainerror.h"
  33 #include "mwindow.h"
  34 #include "plugin.h"
  35 #include "pluginserver.h"
  36 #include "theme.h"
  37 #include "track.h"
  38
  39 #define COLOR_W xS(50)
  40 #define COLOR_H yS(30)
  41
  42 TracerNum::TracerNum(TracerWindow *gui, int x, int y, float output)
  43  : BC_TumbleTextBox(gui, output, -32767.0f, 32767.0f, x, y, xS(120))
  44 {
  45         this->gui = gui;
  46         set_increment(1);
  47         set_precision(1);
  48 }
  49
  50 TracerNum::~TracerNum()
  51 {
  52 }
  53
  54 int TracerPointX::handle_event()
  55 {
  56         if( !TracerNum::handle_event() ) return 0;
  57         TracerPointList *point_list = gui->point_list;
  58         int hot_point = point_list->get_selection_number(0, 0);
  59         TracerPoints &points = gui->plugin->config.points;
  60         int sz = points.size();
  61         if( hot_point >= 0 && hot_point < sz ) {
  62                 float v = atof(get_text());
  63                 points[hot_point]->x = v;
  64                 point_list->set_point(hot_point, PT_X, v);
  65         }
  66         point_list->update_list(hot_point);
  67         gui->send_configure_change();
  68         return 1;
  69 }
  70 int TracerPointY::handle_event()
  71 {
  72         if( !TracerNum::handle_event() ) return 0;
  73         TracerPointList *point_list = gui->point_list;
  74         int hot_point = point_list->get_selection_number(0, 0);
  75         TracerPoints &points = gui->plugin->config.points;
  76         int sz = points.size();
  77         if( hot_point >= 0 && hot_point < sz ) {
  78                 float v = atof(get_text());
  79                 points[hot_point]->y = v;
  80                 point_list->set_point(hot_point, PT_Y, v);
  81         }
  82         point_list->update_list(hot_point);
  83         gui->send_configure_change();
  84         return 1;
  85 }
  86
  87 TracerWindow::TracerWindow(Tracer *plugin)
  88  : PluginClientWindow(plugin, xS(460), yS(420), xS(460), yS(420), 0)
  89 {
  90         this->plugin = plugin;
  91         this->title_x = 0;    this->point_x = 0;
  92         this->title_y = 0;    this->point_y = 0;
  93         this->new_point = 0;  this->del_point = 0;
  94         this->point_up = 0;   this->point_dn = 0;
  95         this->drag = 0;       this->draw = 0;
  96         this->button_no = 0;  this->invert = 0;
  97         this->title_r = 0;    this->title_s = 0;
  98         this->feather = 0;    this->radius = 0;
  99         this->last_x = 0;     this->last_y = 0;
 100         this->point_list = 0; this->pending_config = 0;
 101 }
 102
 103 TracerWindow::~TracerWindow()
 104 {
 105         delete point_x;
 106         delete point_y;
 107 }
 108
 109 void TracerWindow::create_objects()
 110 {
 111         int x = xS(10), y = yS(10);
 112         int margin = plugin->get_theme()->widget_border;
 113         int hot_point = plugin->selected;
 114         add_subwindow(title_x = new BC_Title(x, y, _("X:")));
 115         int x1 = x + title_x->get_w() + margin;
 116         TracerPoints &points = plugin->config.points;
 117         TracerPoint *pt = hot_point >= 0 && hot_point<points.size() ?
 118                 points[hot_point] : 0;
 119         point_x = new TracerPointX(this, x1, y, !pt ? 0 : pt->x);
 120         point_x->create_objects();
 121         x1 += point_x->get_w() + margin + xS(20);
 122         add_subwindow(new_point = new TracerNewPoint(this, plugin, x1, y));
 123         x1 += new_point->get_w() + margin + xS(30);
 124         add_subwindow(point_up = new TracerPointUp(this, x1, y));
 125         y += point_x->get_h() + margin;
 126         add_subwindow(title_y = new BC_Title(x, y, _("Y:")));
 127         x1 = x + title_y->get_w() + margin;
 128         point_y = new TracerPointY(this, x1, y, !pt ? 0 : pt->y);
 129         point_y->create_objects();
 130         x1 += point_y->get_w() + margin + xS(20);
 131         add_subwindow(del_point = new TracerDelPoint(this, plugin, x1, y));
 132         x1 += del_point->get_w() + margin + xS(30);
 133         add_subwindow(point_dn = new TracerPointDn(this, x1, y));
 134         y += point_y->get_h() + margin + yS(10);
 135
 136         add_subwindow(drag = new TracerDrag(this, x, y));
 137         if( plugin->drag ) {
 138                 if( !grab(plugin->server->mwindow->cwindow->gui) )
 139                         eprintf("drag enabled, but compositor already grabbed\n");
 140         }
 141         x1 = x + drag->get_w() + margin + xS(20);
 142         add_subwindow(draw = new TracerDraw(this, x1, y));
 143         x1 += draw->get_w() + margin + xS(20);
 144         add_subwindow(fill = new TracerFill(this, x1, y));
 145         x1 += drag->get_w() + margin + xS(20);
 146         int y1 = y + yS(3);
 147         add_subwindow(reset = new TracerReset(this, plugin, x1, y1));
 148         y1 += reset->get_h() + margin;
 149         add_subwindow(invert = new TracerInvert(this, plugin, x1, y1));
 150         y += drag->get_h() + margin + yS(15);
 151
 152         x1 = x + xS(80);
 153         add_subwindow(title_r = new BC_Title(x, y, _("Feather:")));
 154         add_subwindow(feather = new TracerFeather(this, x1, y, xS(150)));
 155         y += feather->get_h() + margin;
 156         add_subwindow(title_s = new BC_Title(x, y, _("Radius:")));
 157         add_subwindow(radius = new TracerRadius(this, x1, y, xS(150)));
 158         y += radius->get_h() + margin + yS(5);
 159
 160         add_subwindow(point_list = new TracerPointList(this, plugin, x, y));
 161         point_list->update(plugin->selected);
 162         y += point_list->get_h() + yS(10);
 163
 164         add_subwindow(new BC_Title(x, y, _(
 165                 "Btn1: select/drag point\n"
 166                 "Btn2: drag all points\n"
 167                 "Btn3: add point on nearest line\n"
 168                 "Btn3: shift: append point to end\n"
 169                 "Wheel: rotate, centered on cursor\n"
 170                 "Wheel: shift: scale, centered on cursor\n")));
 171         show_window(1);
 172 }
 173
 174 void TracerWindow::send_configure_change()
 175 {
 176         pending_config = 0;
 177         plugin->send_configure_change();
 178 }
 179
 180 int TracerWindow::grab_event(XEvent *event)
 181 {
 182         int ret = do_grab_event(event);
 183         if( pending_config && !grab_event_count() )
 184                 send_configure_change();
 185         return ret;
 186 }
 187
 188 int TracerWindow::do_grab_event(XEvent *event)
 189 {
 190         switch( event->type ) {
 191         case ButtonPress: break;
 192         case ButtonRelease: break;
 193         case MotionNotify: break;
 194         default:
 195                 return 0;
 196         }
 197
 198         MWindow *mwindow = plugin->server->mwindow;
 199         CWindowGUI *cwindow_gui = mwindow->cwindow->gui;
 200         CWindowCanvas *canvas = cwindow_gui->canvas;
 201         int cursor_x, cursor_y;
 202         cwindow_gui->get_relative_cursor(cursor_x, cursor_y);
 203         cursor_x -= canvas->view_x;
 204         cursor_y -= canvas->view_y;
 205
 206         if( !button_no ) {
 207                 if( cursor_x < 0 || cursor_x >= canvas->view_w ||
 208                     cursor_y < 0 || cursor_y >= canvas->view_h )
 209                         return 0;
 210         }
 211
 212         switch( event->type ) {
 213         case ButtonPress:
 214                 if( button_no ) return 0;
 215                 button_no = event->xbutton.button;
 216                 break;
 217         case ButtonRelease:
 218                 if( !button_no ) return 0;
 219                 button_no = 0;
 220                 return 1;
 221         case MotionNotify:
 222                 if( !button_no ) return 0;
 223                 break;
 224         default:
 225                 return 0;
 226         }
 227
 228         float output_x = cursor_x, output_y = cursor_y, track_x, track_y;
 229         canvas->canvas_to_output(mwindow->edl, 0, output_x, output_y);
 230         plugin->output_to_track(output_x, output_y, track_x, track_y);
 231         point_x->update((int64_t)track_x);
 232         point_y->update((int64_t)track_y);
 233         TracerPoints &points = plugin->config.points;
 234
 235         switch( event->type ) {
 236         case ButtonPress: {
 237                 float s = 1.02;
 238                 float th = M_PI/360.f; // .5 deg per wheel_btn
 239                 int shift_down = event->xbutton.state & ShiftMask;
 240                 switch( button_no ) {
 241                 case WHEEL_DOWN:
 242                         s = 0.98;
 243                         th = -th;  // fall thru
 244                 case WHEEL_UP: {
 245                         // shift_down scale, !shift_down rotate
 246                         float st = sin(th), ct = cos(th);
 247                         int sz = points.size();
 248                         for( int i=0; i<sz; ++i ) {
 249                                 TracerPoint *pt = points[i];
 250                                 float px = pt->x - track_x, py = pt->y - track_y;
 251                                 float nx = shift_down ? px*s : px*ct + py*st;
 252                                 float ny = shift_down ? py*s : py*ct - px*st;
 253                                 point_list->set_point(i, PT_X, pt->x = nx + track_x);
 254                                 point_list->set_point(i, PT_Y, pt->y = ny + track_y);
 255                         }
 256                         point_list->update(-1);
 257                         button_no = 0;
 258                         break; }
 259                 case RIGHT_BUTTON: {
 260                         // shift_down adds to end
 261                         int sz = !shift_down ? points.size() : 0;
 262                         int k = !shift_down ? -1 : points.size()-1;
 263                         float mx = FLT_MAX;
 264                         for( int i=0; i<sz; ++i ) {
 265                                 // pt on line pt[i+0]..pt[i+1] nearest cursor_x,cursor_y
 266                                 TracerPoint *pt0 = points[i+0];
 267                                 TracerPoint *pt1 = i+1<sz ? points[i+1] : points[0];
 268                                 float x0 = pt0->x, y0 = pt0->y;
 269                                 float x1 = pt1->x, y1 = pt1->y;
 270                                 float dx = x1-x0, dy = y1-y0;
 271                                 float rr = dx*dx + dy*dy;
 272                                 if( !rr ) continue;
 273                                 float u = ((x1-track_x)*dx + (y1-track_y)*dy) / rr;
 274                                 if( u < 0 || u > 1 ) continue;  // past endpts
 275                                 float x = x0*u + x1*(1-u);
 276                                 float y = y0*u + y1*(1-u);
 277                                 dx = track_x-x;  dy = track_y-y;
 278                                 float dd = dx*dx + dy*dy;       // d**2 closest approach
 279                                 if( mx > dd ) { mx = dd;  k = i; }
 280                         }
 281                         TracerPoint *pt = points[sz=plugin->new_point()];
 282                         int hot_point = k+1;
 283                         for( int i=sz; i>hot_point; --i ) points[i] = points[i-1];
 284                         points[hot_point] = pt;
 285                         pt->x = track_x;  pt->y = track_y;
 286                         point_list->update(hot_point);
 287                         break; }
 288                 case LEFT_BUTTON: {
 289                         int hot_point = -1, sz = points.size();
 290                         if( sz > 0 ) {
 291                                 TracerPoint *pt = points[hot_point=0];
 292                                 double dist = DISTANCE(track_x,track_y, pt->x,pt->y);
 293                                 for( int i=1; i<sz; ++i ) {
 294                                         pt = points[i];
 295                                         double d = DISTANCE(track_x,track_y, pt->x,pt->y);
 296                                         if( d >= dist ) continue;
 297                                         dist = d;  hot_point = i;
 298                                 }
 299                                 pt = points[hot_point];
 300                                 float cx, cy;
 301                                 plugin->track_to_output(pt->x, pt->y, cx, cy);
 302                                 canvas->output_to_canvas(mwindow->edl, 0, cx, cy);
 303                                 dist = DISTANCE(cursor_x, cursor_y, cx,cy);
 304                                 if( dist >= HANDLE_W ) hot_point = -1;
 305                         }
 306                         if( hot_point >= 0 && sz > 0 ) {
 307                                 TracerPoint *pt = points[hot_point];
 308                                 point_list->set_point(hot_point, PT_X, pt->x = track_x);
 309                                 point_list->set_point(hot_point, PT_Y, pt->y = track_y);
 310                                 point_list->update_list(hot_point);
 311                         }
 312                         break; }
 313                 }
 314                 break; }
 315         case MotionNotify: {
 316                 switch( button_no ) {
 317                 case LEFT_BUTTON: {
 318                         int hot_point = point_list->get_selection_number(0, 0);
 319                         if( hot_point >= 0 && hot_point < points.size() ) {
 320                                 TracerPoint *pt = points[hot_point];
 321                                 if( pt->x == track_x && pt->y == track_y ) break;
 322                                 point_list->set_point(hot_point, PT_X, pt->x = track_x);
 323                                 point_list->set_point(hot_point, PT_Y, pt->y = track_y);
 324                                 point_x->update(pt->x);
 325                                 point_y->update(pt->y);
 326                                 point_list->update_list(hot_point);
 327                         }
 328                         break; }
 329                 case MIDDLE_BUTTON: {
 330                         float dx = track_x - last_x, dy = track_y - last_y;
 331                         int sz = points.size();
 332                         for( int i=0; i<sz; ++i ) {
 333                                 TracerPoint *pt = points[i];
 334                                 point_list->set_point(i, PT_X, pt->x += dx);
 335                                 point_list->set_point(i, PT_Y, pt->y += dy);
 336                         }
 337                         int hot_point = point_list->get_selection_number(0, 0);
 338                         if( hot_point >= 0 && hot_point < sz ) {
 339                                 TracerPoint *pt = points[hot_point];
 340                                 point_x->update(pt->x);
 341                                 point_y->update(pt->y);
 342                                 point_list->update_list(hot_point);
 343                         }
 344                         break; }
 345                 }
 346                 break; }
 347         }
 348
 349         last_x = track_x;  last_y = track_y;
 350         pending_config = 1;
 351         return 1;
 352 }
 353
 354 void TracerWindow::done_event(int result)
 355 {
 356         ungrab(client->server->mwindow->cwindow->gui);
 357 }
 358
 359 TracerPointList::TracerPointList(TracerWindow *gui, Tracer *plugin, int x, int y)
 360  : BC_ListBox(x, y, xS(360), yS(130), LISTBOX_TEXT)
 361 {
 362         this->gui = gui;
 363         this->plugin = plugin;
 364         titles[PT_X] = _("X");    widths[PT_X] = xS(90);
 365         titles[PT_Y] = _("Y");    widths[PT_Y] = yS(90);
 366 }
 367 TracerPointList::~TracerPointList()
 368 {
 369         clear();
 370 }
 371 void TracerPointList::clear()
 372 {
 373         for( int i=PT_SZ; --i>=0; )
 374                 cols[i].remove_all_objects();
 375 }
 376
 377 int TracerPointList::column_resize_event()
 378 {
 379         for( int i=PT_SZ; --i>=0; )
 380                 widths[i] = get_column_width(i);
 381         return 1;
 382 }
 383
 384 int TracerPointList::handle_event()
 385 {
 386         int hot_point = get_selection_number(0, 0);
 387         const char *x_text = "", *y_text = "";
 388         TracerPoints &points = plugin->config.points;
 389
 390         int sz = points.size();
 391         if( hot_point >= 0 && sz > 0 ) {
 392                 x_text = gui->point_list->cols[PT_X].get(hot_point)->get_text();
 393                 y_text = gui->point_list->cols[PT_Y].get(hot_point)->get_text();
 394         }
 395         gui->point_x->update(x_text);
 396         gui->point_y->update(y_text);
 397         update(hot_point);
 398         gui->send_configure_change();
 399         return 1;
 400 }
 401
 402 int TracerPointList::selection_changed()
 403 {
 404         handle_event();
 405         return 1;
 406 }
 407
 408 void TracerPointList::new_point(const char *xp, const char *yp)
 409 {
 410         cols[PT_X].append(new BC_ListBoxItem(xp));
 411         cols[PT_Y].append(new BC_ListBoxItem(yp));
 412 }
 413
 414 void TracerPointList::del_point(int i)
 415 {
 416         for( int sz1=cols[0].size()-1, c=PT_SZ; --c>=0; )
 417                 cols[c].remove_object_number(sz1-i);
 418 }
 419
 420 void TracerPointList::set_point(int i, int c, float v)
 421 {
 422         char s[BCSTRLEN]; sprintf(s,"%0.4f",v);
 423         set_point(i,c,s);
 424 }
 425 void TracerPointList::set_point(int i, int c, const char *cp)
 426 {
 427         cols[c].get(i)->set_text(cp);
 428 }
 429
 430 int TracerPointList::set_selected(int k)
 431 {
 432         TracerPoints &points = plugin->config.points;
 433         int sz = points.size();
 434         if( !sz ) return -1;
 435         bclamp(k, 0, sz-1);
 436         update_selection(&cols[0], k);
 437         return k;
 438 }
 439 void TracerPointList::update_list(int k)
 440 {
 441         int sz = plugin->config.points.size();
 442         if( k < 0 || k >= sz ) k = -1;
 443         plugin->selected = k;
 444         update_selection(&cols[0], k);
 445         int xpos = get_xposition(), ypos = get_yposition();
 446         BC_ListBox::update(&cols[0], &titles[0],&widths[0],PT_SZ, xpos,ypos,k);
 447         center_selection();
 448 }
 449 void TracerPointList::update(int k)
 450 {
 451         clear();
 452         TracerPoints &points = plugin->config.points;
 453         int sz = points.size();
 454         for( int i=0; i<sz; ++i ) {
 455                 TracerPoint *pt = points[i];
 456                 char xtxt[BCSTRLEN];  sprintf(xtxt,"%0.4f", pt->x);
 457                 char ytxt[BCSTRLEN];  sprintf(ytxt,"%0.4f", pt->y);
 458                 new_point(xtxt, ytxt);
 459         }
 460         if( k >= 0 && k < sz ) {
 461                 gui->point_x->update(gui->point_list->cols[PT_X].get(k)->get_text());
 462                 gui->point_y->update(gui->point_list->cols[PT_Y].get(k)->get_text());
 463         }
 464         update_list(k);
 465 }
 466
 467 void TracerWindow::update_gui()
 468 {
 469         TracerConfig &config = plugin->config;
 470         drag->update(plugin->drag);
 471         draw->update(config.draw);
 472         fill->update(config.fill);
 473         feather->update(config.feather);
 474         radius->update(config.radius);
 475         invert->update(config.invert);
 476         point_list->update(-1);
 477 }
 478
 479
 480 TracerPointUp::TracerPointUp(TracerWindow *gui, int x, int y)
 481  : BC_GenericButton(x, y, _("Up"))
 482 {
 483         this->gui = gui;
 484 }
 485 TracerPointUp::~TracerPointUp()
 486 {
 487 }
 488
 489 int TracerPointUp::handle_event()
 490 {
 491         TracerPoints &points = gui->plugin->config.points;
 492         int sz = points.size();
 493         int hot_point = gui->point_list->get_selection_number(0, 0);
 494
 495         if( sz > 1 && hot_point > 0 ) {
 496                 TracerPoint *&pt0 = points[hot_point];
 497                 TracerPoint *&pt1 = points[--hot_point];
 498                 TracerPoint *t = pt0;  pt0 = pt1;  pt1 = t;
 499                 gui->point_list->update(hot_point);
 500         }
 501         gui->send_configure_change();
 502         return 1;
 503 }
 504
 505 TracerPointDn::TracerPointDn(TracerWindow *gui, int x, int y)
 506  : BC_GenericButton(x, y, _("Dn"))
 507 {
 508         this->gui = gui;
 509 }
 510 TracerPointDn::~TracerPointDn()
 511 {
 512 }
 513
 514 int TracerPointDn::handle_event()
 515 {
 516         TracerPoints &points = gui->plugin->config.points;
 517         int sz = points.size();
 518         int hot_point = gui->point_list->get_selection_number(0, 0);
 519         if( sz > 1 && hot_point < sz-1 ) {
 520                 TracerPoint *&pt0 = points[hot_point];
 521                 TracerPoint *&pt1 = points[++hot_point];
 522                 TracerPoint *t = pt0;  pt0 = pt1;  pt1 = t;
 523                 gui->point_list->update(hot_point);
 524         }
 525         gui->send_configure_change();
 526         return 1;
 527 }
 528
 529 TracerDrag::TracerDrag(TracerWindow *gui, int x, int y)
 530  : BC_CheckBox(x, y, gui->plugin->drag, _("Drag"))
 531 {
 532         this->gui = gui;
 533 }
 534 int TracerDrag::handle_event()
 535 {
 536         CWindowGUI *cwindow_gui = gui->plugin->server->mwindow->cwindow->gui;
 537         int value = get_value();
 538         if( value ) {
 539                 if( !gui->grab(cwindow_gui) ) {
 540                         update(value = 0);
 541                         flicker(10,50);
 542                 }
 543         }
 544         else
 545                 gui->ungrab(cwindow_gui);
 546         gui->plugin->drag = value;
 547         gui->send_configure_change();
 548         return 1;
 549 }
 550 int TracerWindow::handle_ungrab()
 551 {
 552         CWindowGUI *cwindow_gui = plugin->server->mwindow->cwindow->gui;
 553         int ret = ungrab(cwindow_gui);
 554         if( ret ) {
 555                 drag->update(0);
 556                 plugin->drag = 0;
 557         }
 558         return ret;
 559 }
 560
 561
 562 TracerDraw::TracerDraw(TracerWindow *gui, int x, int y)
 563  : BC_CheckBox(x, y, gui->plugin->config.draw, _("Draw"))
 564 {
 565         this->gui = gui;
 566 }
 567 int TracerDraw::handle_event()
 568 {
 569         gui->plugin->config.draw = get_value();
 570         gui->send_configure_change();
 571         return 1;
 572 }
 573
 574 TracerFill::TracerFill(TracerWindow *gui, int x, int y)
 575  : BC_CheckBox(x, y, gui->plugin->config.fill, _("Fill"))
 576 {
 577         this->gui = gui;
 578 }
 579 int TracerFill::handle_event()
 580 {
 581         gui->plugin->config.fill = get_value();
 582         gui->send_configure_change();
 583         return 1;
 584 }
 585
 586 TracerFeather::TracerFeather(TracerWindow *gui, int x, int y, int w)
 587  : BC_ISlider(x,y,0,w,w, -50,50, gui->plugin->config.feather)
 588 {
 589         this->gui = gui;
 590 }
 591 int TracerFeather::handle_event()
 592 {
 593         gui->plugin->config.feather = get_value();
 594         gui->send_configure_change();
 595         return 1;
 596 }
 597
 598 TracerRadius::TracerRadius(TracerWindow *gui, int x, int y, int w)
 599  : BC_FSlider(x,y, 0,w,w, -5.f,5.f, gui->plugin->config.radius)
 600 {
 601         this->gui = gui;
 602 }
 603 int TracerRadius::handle_event()
 604 {
 605         gui->plugin->config.radius = get_value();
 606         gui->send_configure_change();
 607         return 1;
 608 }
 609
 610 TracerNewPoint::TracerNewPoint(TracerWindow *gui, Tracer *plugin, int x, int y)
 611  : BC_GenericButton(x, y, xS(100), _("New"))
 612 {
 613         this->gui = gui;
 614         this->plugin = plugin;
 615 }
 616 TracerNewPoint::~TracerNewPoint()
 617 {
 618 }
 619 int TracerNewPoint::handle_event()
 620 {
 621         int k = plugin->new_point();
 622         gui->point_list->update(k);
 623         gui->send_configure_change();
 624         return 1;
 625 }
 626
 627 TracerDelPoint::TracerDelPoint(TracerWindow *gui, Tracer *plugin, int x, int y)
 628  : BC_GenericButton(x, y, xS(100), C_("Del"))
 629 {
 630         this->gui = gui;
 631         this->plugin = plugin;
 632 }
 633 TracerDelPoint::~TracerDelPoint()
 634 {
 635 }
 636 int TracerDelPoint::handle_event()
 637 {
 638         int hot_point = gui->point_list->get_selection_number(0, 0);
 639         TracerPoints &points = plugin->config.points;
 640         if( hot_point >= 0 && hot_point < points.size() ) {
 641                 plugin->config.del_point(hot_point);
 642                 gui->point_list->update(--hot_point);
 643                 gui->send_configure_change();
 644         }
 645         return 1;
 646 }
 647
 648 TracerReset::TracerReset(TracerWindow *gui, Tracer *plugin, int x, int y)
 649  : BC_GenericButton(x, y, _("Reset"))
 650 {
 651         this->gui = gui;
 652         this->plugin = plugin;
 653 }
 654 TracerReset::~TracerReset()
 655 {
 656 }
 657 int TracerReset::handle_event()
 658 {
 659         TracerConfig &config = plugin->config;
 660         if( !plugin->drag ) {
 661                 MWindow *mwindow = plugin->server->mwindow;
 662                 CWindowGUI *cwindow_gui = mwindow->cwindow->gui;
 663                 if( gui->grab(cwindow_gui) )
 664                         plugin->drag = 1;
 665                 else
 666                         gui->drag->flicker(10,50);
 667         }
 668         config.draw = 1;
 669         config.fill = 0;
 670         config.invert = 0;
 671         config.feather = 0;
 672         config.radius = 1;
 673         plugin->selected = -1;
 674         TracerPoints &points = plugin->config.points;
 675         points.remove_all_objects();
 676         gui->point_list->update(-1);
 677         gui->update_gui();
 678         gui->send_configure_change();
 679         return 1;
 680 }
 681
 682 TracerInvert::TracerInvert(TracerWindow *gui, Tracer *plugin, int x, int y)
 683  : BC_CheckBox(x, y, gui->plugin->config.invert, _("Invert"))
 684 {
 685         this->gui = gui;
 686         this->plugin = plugin;
 687 }
 688 TracerInvert::~TracerInvert()
 689 {
 690 }
 691 int TracerInvert::handle_event()
 692 {
 693         plugin->config.invert = get_value();
 694         gui->send_configure_change();
 695         return 1;
 696 }
 697