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