synfig-studio/trunk/src/gtkmm/widget_curves.cpp

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file widget_curves.cpp
   3 **      \brief Template File
   4 **
   5 **      $Id$
   6 **
   7 **      \legal
   8 **      Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
   9 **
  10 **      This package is free software; you can redistribute it and/or
  11 **      modify it under the terms of the GNU General Public License as
  12 **      published by the Free Software Foundation; either version 2 of
  13 **      the License, or (at your option) any later version.
  14 **
  15 **      This package is distributed in the hope that it will be useful,
  16 **      but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 **      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  18 **      General Public License for more details.
  19 **      \endlegal
  20 */
  21 /* ========================================================================= */
  22
  23 /* === H E A D E R S ======================================================= */
  24
  25 #ifdef USING_PCH
  26 #       include "pch.h"
  27 #else
  28 #ifdef HAVE_CONFIG_H
  29 #       include <config.h>
  30 #endif
  31
  32 #include "widget_curves.h"
  33 #include <cmath>
  34 #include "app.h"
  35 #include <gtkmm/drawingarea.h>
  36 #include <map>
  37 #include <vector>
  38 #include <ETL/misc>
  39 #include <sigc++/object.h>
  40
  41 #endif
  42
  43 /* === U S I N G =========================================================== */
  44
  45 using namespace std;
  46 using namespace etl;
  47 using namespace synfig;
  48 using namespace studio;
  49
  50 /* === M A C R O S ========================================================= */
  51
  52 /* === G L O B A L S ======================================================= */
  53
  54 /* === P R O C E D U R E S ================================================= */
  55
  56 /*
  57 void
  58 studio::render_color_to_window(const Glib::RefPtr<Gdk::Drawable>& window,const Gdk::Rectangle& ca,const synfig::Color &color)
  59 {
  60         const int height(ca.get_height());
  61         const int width(ca.get_width());
  62
  63         const int square_size(height/2);
  64
  65         Glib::RefPtr<Gdk::GC> gc(Gdk::GC::create(window));
  66
  67         if(color.get_alpha()!=1.0)
  68         {
  69                 // In this case we need to render the alpha squares
  70
  71                 const Color bg1(Color::blend(color,Color(0.75, 0.75, 0.75),1.0).clamped());
  72                 const Color bg2(Color::blend(color,Color(0.5, 0.5, 0.5),1.0).clamped());
  73
  74                 Gdk::Color gdk_c1(colorconv_synfig2gdk(bg1));
  75                 Gdk::Color gdk_c2(colorconv_synfig2gdk(bg2));
  76
  77                 bool toggle(false);
  78                 for(int i=0;i<width;i+=square_size)
  79                 {
  80                         const int square_width(min(square_size,width-i));
  81
  82                         if(toggle)
  83                         {
  84                                 gc->set_rgb_fg_color(gdk_c1);
  85                                 window->draw_rectangle(gc, true, ca.get_x()+i, ca.get_y(), square_width, square_size);
  86
  87                                 gc->set_rgb_fg_color(gdk_c2);
  88                                 window->draw_rectangle(gc, true, ca.get_x()+i, ca.get_y()+square_size, square_width, square_size);
  89                                 toggle=false;
  90                         }
  91                         else
  92                         {
  93                                 gc->set_rgb_fg_color(gdk_c2);
  94                                 window->draw_rectangle(gc, true, ca.get_x()+i, ca.get_y(), square_width, square_size);
  95
  96                                 gc->set_rgb_fg_color(gdk_c1);
  97                                 window->draw_rectangle(gc, true, ca.get_x()+i, ca.get_y()+square_size, square_width, square_size);
  98                                 toggle=true;
  99                         }
 100                 }
 101         }
 102         else
 103         {
 104                 // In this case we have a solid color to use
 105                 Gdk::Color gdk_c1(colorconv_synfig2gdk(color));
 106
 107                 gc->set_rgb_fg_color(gdk_c1);
 108                 window->draw_rectangle(gc, true, ca.get_x(), ca.get_y(), width-1, height-1);
 109         }
 110         gc->set_rgb_fg_color(Gdk::Color("#ffffff"));
 111         window->draw_rectangle(gc, false, ca.get_x()+1, ca.get_y()+1, width-3, height-3);
 112         gc->set_rgb_fg_color(Gdk::Color("#000000"));
 113         window->draw_rectangle(gc, false, ca.get_x(), ca.get_y(), width-1, height-1);
 114 }
 115 */
 116
 117 /* === C L A S S E S ======================================================= */
 118
 119
 120
 121 struct studio::Widget_Curves::Channel
 122 {
 123         synfig::String name;
 124         Gdk::Color color;
 125         std::map<synfig::Real,synfig::Real> values;
 126 };
 127
 128 struct studio::Widget_Curves::CurveStruct : sigc::trackable
 129 {
 130         synfigapp::ValueDesc value_desc;
 131         std::vector<Channel> channels;
 132
 133         CurveStruct(const synfigapp::ValueDesc& x):
 134                 value_desc(x)
 135         {
 136                 switch(value_desc.get_value_type())
 137                 {
 138                         case ValueBase::TYPE_REAL:
 139                                 channels.push_back(Channel());
 140                                 channels.back().name="real";
 141                                 channels.back().color=Gdk::Color("#007f7f");
 142                                 break;
 143                         case ValueBase::TYPE_TIME:
 144                                 channels.push_back(Channel());
 145                                 channels.back().name="time";
 146                                 channels.back().color=Gdk::Color("#7f7f00");
 147                                 break;
 148                         case ValueBase::TYPE_INTEGER:
 149                                 channels.push_back(Channel());
 150                                 channels.back().name="int";
 151                                 channels.back().color=Gdk::Color("#7f0000");
 152                                 break;
 153                         case ValueBase::TYPE_BOOL:
 154                                 channels.push_back(Channel());
 155                                 channels.back().name="bool";
 156                                 channels.back().color=Gdk::Color("#ff7f00");
 157                                 break;
 158                         case ValueBase::TYPE_ANGLE:
 159                                 channels.push_back(Channel());
 160                                 channels.back().name="theta";
 161                                 channels.back().color=Gdk::Color("#004f4f");
 162                                 break;
 163                         case ValueBase::TYPE_COLOR:
 164                                 channels.push_back(Channel());
 165                                 channels.back().name="red";
 166                                 channels.back().color=Gdk::Color("#7f0000");
 167                                 channels.push_back(Channel());
 168                                 channels.back().name="green";
 169                                 channels.back().color=Gdk::Color("#007f00");
 170                                 channels.push_back(Channel());
 171                                 channels.back().name="blue";
 172                                 channels.back().color=Gdk::Color("#00007f");
 173                                 channels.push_back(Channel());
 174                                 channels.back().name="alpha";
 175                                 channels.back().color=Gdk::Color("#000000");
 176                                 break;
 177                         case ValueBase::TYPE_VECTOR:
 178                                 channels.push_back(Channel());
 179                                 channels.back().name="x";
 180                                 channels.back().color=Gdk::Color("#7f007f");
 181                                 channels.push_back(Channel());
 182                                 channels.back().name="y";
 183                                 channels.back().color=Gdk::Color("#007f7f");
 184                                 break;
 185                         case ValueBase::TYPE_BLINEPOINT:
 186                                 channels.push_back(Channel());
 187                                 channels.back().name="v.x";
 188                                 channels.back().color=Gdk::Color("#ff7f00");
 189                                 channels.push_back(Channel());
 190                                 channels.back().name="v.y";
 191                                 channels.back().color=Gdk::Color("#7f3f00");
 192
 193                                 channels.push_back(Channel());
 194                                 channels.back().name="width";
 195                                 channels.back().color=Gdk::Color("#000000");
 196
 197                                 channels.push_back(Channel());
 198                                 channels.back().name="origin";
 199                                 channels.back().color=Gdk::Color("#ffffff");
 200
 201                                 channels.push_back(Channel());
 202                                 channels.back().name="tsplit";
 203                                 channels.back().color=Gdk::Color("#ff00ff");
 204
 205                                 channels.push_back(Channel());
 206                                 channels.back().name="t1.x";
 207                                 channels.back().color=Gdk::Color("#ff0000");
 208                                 channels.push_back(Channel());
 209                                 channels.back().name="t1.y";
 210                                 channels.back().color=Gdk::Color("#7f0000");
 211
 212                                 channels.push_back(Channel());
 213                                 channels.back().name="t2.x";
 214                                 channels.back().color=Gdk::Color("#ffff00");
 215                                 channels.push_back(Channel());
 216                                 channels.back().name="t2.y";
 217                                 channels.back().color=Gdk::Color("#7f7f00");
 218                                 break;
 219                         default:
 220                                 throw synfig::Exception::BadType("Bad type for curves");
 221                 }
 222         }
 223
 224         void clear_all_values()
 225         {
 226                 DEBUGPOINT();
 227                 std::vector<Channel>::iterator iter;
 228                 for(iter=channels.begin();iter!=channels.end();++iter)
 229                         iter->values.clear();
 230         }
 231
 232         synfig::Real get_value(int chan, synfig::Real time, synfig::Real tolerance)
 233         {
 234                 std::map<synfig::Real,synfig::Real>::iterator iter;
 235
 236                 // First check to see if we have a value
 237                 // that is "close enough" to the time
 238                 // we are looking for
 239                 iter=channels[chan].values.lower_bound(time);
 240                 if(iter!=channels[chan].values.end() && iter->first-time<=tolerance)
 241                         return -iter->second;
 242
 243                 // Since that didn't work, we now need
 244                 // to go ahead and figure out what the
 245                 // actual value is at that time.
 246                 ValueBase value(value_desc.get_value(time));
 247                 switch(value.get_type())
 248                 {
 249                         case ValueBase::TYPE_REAL:
 250                                 channels[0].values[time]=value.get(Real());
 251                                 break;
 252                         case ValueBase::TYPE_TIME:
 253                                 channels[0].values[time]=value.get(Time());
 254                                 break;
 255                         case ValueBase::TYPE_INTEGER:
 256                                 channels[0].values[time]=value.get(int());
 257                                 break;
 258                         case ValueBase::TYPE_BOOL:
 259                                 channels[0].values[time]=value.get(bool());
 260                                 break;
 261                         case ValueBase::TYPE_ANGLE:
 262                                 channels[0].values[time]=Angle::rad(value.get(Angle())).get();
 263                                 break;
 264                         case ValueBase::TYPE_COLOR:
 265                                 channels[0].values[time]=value.get(Color()).get_r();
 266                                 channels[1].values[time]=value.get(Color()).get_g();
 267                                 channels[2].values[time]=value.get(Color()).get_b();
 268                                 channels[3].values[time]=value.get(Color()).get_a();
 269                                 break;
 270                         case ValueBase::TYPE_VECTOR:
 271                                 channels[0].values[time]=value.get(Vector())[0];
 272                                 channels[1].values[time]=value.get(Vector())[1];
 273                                 break;
 274                         case ValueBase::TYPE_BLINEPOINT:
 275                                 channels[0].values[time]=value.get(BLinePoint()).get_vertex()[0];
 276                                 channels[1].values[time]=value.get(BLinePoint()).get_vertex()[1];
 277                                 channels[2].values[time]=value.get(BLinePoint()).get_width();
 278                                 channels[3].values[time]=value.get(BLinePoint()).get_origin();
 279                                 channels[4].values[time]=value.get(BLinePoint()).get_split_tangent_flag();
 280                                 channels[5].values[time]=value.get(BLinePoint()).get_tangent1()[0];
 281                                 channels[6].values[time]=value.get(BLinePoint()).get_tangent1()[1];
 282                                 channels[7].values[time]=value.get(BLinePoint()).get_tangent2()[0];
 283                                 channels[8].values[time]=value.get(BLinePoint()).get_tangent2()[1];
 284                                 break;
 285                         default:
 286                                 return 0;
 287                 }
 288
 289                 return -channels[chan].values[time];
 290         }
 291 };
 292
 293 /* === M E T H O D S ======================================================= */
 294
 295 Widget_Curves::Widget_Curves():
 296         range_adjustment_(new Gtk::Adjustment(-1,-2,2,0.1,0.1,2))
 297 {
 298         set_size_request(64,64);
 299
 300         range_adjustment_->signal_changed().connect(
 301                 sigc::mem_fun(
 302                         *this,
 303                         &Widget_Curves::queue_draw
 304                 )
 305         );
 306         range_adjustment_->signal_value_changed().connect(
 307                 sigc::mem_fun(
 308                         *this,
 309                         &Widget_Curves::queue_draw
 310                 )
 311         );
 312         //set_vadjustment(*range_adjustment_);
 313
 314         signal_expose_event().connect(sigc::mem_fun(*this, &studio::Widget_Curves::redraw));
 315         add_events(Gdk::BUTTON_PRESS_MASK | Gdk::BUTTON_RELEASE_MASK);
 316
 317 }
 318
 319 Widget_Curves::~Widget_Curves()
 320 {
 321 }
 322
 323 void
 324 Widget_Curves::set_time_adjustment(Gtk::Adjustment&x)
 325 {
 326         time_adjustment_=&x;
 327         time_adjustment_->signal_changed().connect(
 328                 sigc::mem_fun(
 329                         *this,
 330                         &Widget_Curves::queue_draw
 331                 )
 332         );
 333         time_adjustment_->signal_value_changed().connect(
 334                 sigc::mem_fun(
 335                         *this,
 336                         &Widget_Curves::queue_draw
 337                 )
 338         );
 339         //set_hadjustment(*time_adjustment_);
 340 }
 341
 342 void
 343 Widget_Curves::clear()
 344 {
 345         curve_list_.clear();
 346 }
 347
 348 void
 349 Widget_Curves::refresh()
 350 {
 351         std::list<CurveStruct>::iterator curve_iter;
 352         for(curve_iter=curve_list_.begin();curve_iter!=curve_list_.end();++curve_iter)
 353         {
 354                 curve_iter->clear_all_values();
 355         }
 356         queue_draw();
 357 }
 358
 359 void
 360 Widget_Curves::set_value_descs(std::list<synfigapp::ValueDesc> value_descs)
 361 {
 362         curve_list_.clear();
 363
 364         std::list<synfigapp::ValueDesc>::iterator iter;
 365         for(iter=value_descs.begin();iter!=value_descs.end();++iter)
 366         {
 367                 try {
 368                         curve_list_.push_back(*iter);
 369                         if(iter->is_value_node())
 370                         {
 371                                 DEBUGPOINT();
 372                                 iter->get_value_node()->signal_changed().connect(
 373                                         sigc::mem_fun(
 374                                                 *this,
 375                                                 &studio::Widget_Curves::refresh
 376                                         )
 377                                 );
 378                         }
 379                         if(iter->parent_is_value_node())
 380                         {
 381                                 DEBUGPOINT();
 382                                 iter->get_parent_value_node()->signal_changed().connect(
 383                                         sigc::mem_fun(
 384                                                 *this,
 385                                                 &studio::Widget_Curves::refresh
 386                                         )
 387                                 );
 388                         }
 389                         if(iter->parent_is_layer_param())
 390                         {
 391                                 DEBUGPOINT();
 392                                 iter->get_layer()->signal_changed().connect(
 393                                         sigc::mem_fun(
 394                                                 *this,
 395                                                 &studio::Widget_Curves::refresh
 396                                         )
 397                                 );
 398                         }
 399                 }catch(synfig::Exception::BadType)
 400                 {
 401                         continue;
 402                 }
 403         }
 404         queue_draw();
 405 }
 406
 407 bool
 408 Widget_Curves::on_event(GdkEvent *event)
 409 {
 410         switch(event->type)
 411         {
 412         case GDK_SCROLL:
 413                 switch(event->scroll.direction)
 414                 {
 415                         case GDK_SCROLL_UP:
 416                                 range_adjustment_->set_page_size(range_adjustment_->get_page_size()/1.25);
 417                                 range_adjustment_->changed();
 418                                 break;
 419                         case GDK_SCROLL_DOWN:
 420                                 range_adjustment_->set_page_size(range_adjustment_->get_page_size()*1.25);
 421                                 range_adjustment_->changed();
 422                                 break;
 423                         default:
 424                                 break;
 425                 }
 426                 break;
 427         default:
 428                 return Gtk::DrawingArea::on_event(event);
 429                 break;
 430         }
 431
 432         return true;
 433
 434 /*      switch(event->type)
 435         {
 436         case GDK_BUTTON_PRESS:
 437                 if(event->button.button==1)
 438                 {
 439                         signal_activate_();
 440                         return true;
 441                 }
 442                 if(event->button.button==3)
 443                 {
 444                         signal_secondary_();
 445                         return true;
 446                 }
 447                 break;
 448
 449         default:
 450                 break;
 451         }
 452         return false;
 453 */
 454 }
 455
 456 bool
 457 Widget_Curves::redraw(GdkEventExpose */*bleh*/)
 458 {
 459         const int h(get_height());
 460         const int w(get_width());
 461         get_window()->clear();
 462
 463         if(!time_adjustment_ || !range_adjustment_ || !h || !w)
 464                 return false;
 465
 466         Glib::RefPtr<Gdk::GC> gc(Gdk::GC::create(get_window()));
 467
 468         const Real t_begin(time_adjustment_->get_lower());
 469         const Real t_end(time_adjustment_->get_upper());
 470         const Real dt((t_end-t_begin)/w);
 471
 472         const Real r_bottom(range_adjustment_->get_value());
 473         const Real r_top(r_bottom+range_adjustment_->get_page_size());
 474         const Real dr((r_top-r_bottom)/h);
 475         Real r_max(-100000000);
 476         Real r_min(100000000);
 477
 478         std::list<CurveStruct>::iterator curve_iter;
 479
 480         vector<Gdk::Point> points[10];
 481
 482         gc->set_function(Gdk::COPY);
 483         gc->set_line_attributes(1,Gdk::LINE_SOLID,Gdk::CAP_BUTT,Gdk::JOIN_MITER);
 484
 485         // Draw zero mark
 486         gc->set_rgb_fg_color(Gdk::Color("#4f4f4f"));
 487         get_window()->draw_rectangle(gc, false, 0, round_to_int((0-r_bottom)/dr), w, 0);
 488
 489         // Draw current time
 490         gc->set_rgb_fg_color(Gdk::Color("#00007f"));
 491         get_window()->draw_rectangle(gc, false, round_to_int((time_adjustment_->get_value()-t_begin)/dt), 0, 0, h);
 492
 493         for(curve_iter=curve_list_.begin();curve_iter!=curve_list_.end();++curve_iter)
 494         {
 495                 Real t;
 496                 int i;
 497                 int channels(curve_iter->channels.size());
 498                 for(i=0;i<channels;i++)
 499                         points[i].clear();
 500
 501                 for(i=0,t=t_begin;i<w;i++,t+=dt)
 502                 {
 503                         for(int chan=0;chan<channels;chan++)
 504                         {
 505                                 Real x(curve_iter->get_value(chan,t,dt));
 506                                 r_max=max(r_max,x);
 507                                 r_min=min(r_min,x);
 508                                 points[chan].push_back(
 509                                         Gdk::Point(
 510                                                 i,
 511                                                 round_to_int(
 512                                                         (
 513                                                                 x-r_bottom
 514                                                         )/dr
 515                                                 )
 516                                         )
 517                                 );
 518                         }
 519                 }
 520
 521                 for(int chan=0;chan<channels;chan++)
 522                 {
 523                         gc->set_rgb_fg_color(curve_iter->channels[chan].color);
 524
 525                         // Draw the curve
 526                         get_window()->draw_lines(gc, Glib::ArrayHandle<Gdk::Point>(points[chan]));
 527
 528                         Glib::RefPtr<Pango::Layout> layout(Pango::Layout::create(get_pango_context()));
 529
 530                         layout->set_text(curve_iter->channels[chan].name);
 531                         get_window()->draw_layout(gc, 1, points[chan][0].get_y()+1, layout);
 532                 }
 533         }
 534
 535         if(!curve_list_.empty())
 536         {
 537                 range_adjustment_->set_upper(r_max+range_adjustment_->get_page_size()/2);
 538                 range_adjustment_->set_lower(r_min-range_adjustment_->get_page_size()/2);
 539         }
 540         get_window()->get_update_area();
 541
 542         return true;
 543 }