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 **  Copyright (c) 2008 Gerco Ballintijn
  10 **
  11 **      This package is free software; you can redistribute it and/or
  12 **      modify it under the terms of the GNU General Public License as
  13 **      published by the Free Software Foundation; either version 2 of
  14 **      the License, or (at your option) any later version.
  15 **
  16 **      This package is distributed in the hope that it will be useful,
  17 **      but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 **      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  19 **      General Public License for more details.
  20 **      \endlegal
  21 */
  22 /* ========================================================================= */
  23
  24 /* === H E A D E R S ======================================================= */
  25
  26 #ifdef USING_PCH
  27 #       include "pch.h"
  28 #else
  29 #ifdef HAVE_CONFIG_H
  30 #       include <config.h>
  31 #endif
  32
  33 #include "widget_curves.h"
  34 #include <cmath>
  35 #include "app.h"
  36 #include <gtkmm/drawingarea.h>
  37 #include <map>
  38 #include <vector>
  39 #include <ETL/misc>
  40 #include <sigc++/object.h>
  41
  42 #include "general.h"
  43
  44 #endif
  45
  46 /* === U S I N G =========================================================== */
  47
  48 using namespace std;
  49 using namespace etl;
  50 using namespace synfig;
  51 using namespace studio;
  52
  53 /* === M A C R O S ========================================================= */
  54
  55 /* === G L O B A L S ======================================================= */
  56
  57 /* === P R O C E D U R E S ================================================= */
  58
  59 /*
  60 void
  61 studio::render_color_to_window(const Glib::RefPtr<Gdk::Drawable>& window,const Gdk::Rectangle& ca,const synfig::Color &color)
  62 {
  63         const int height(ca.get_height());
  64         const int width(ca.get_width());
  65
  66         const int square_size(height/2);
  67
  68         Glib::RefPtr<Gdk::GC> gc(Gdk::GC::create(window));
  69
  70         if(color.get_alpha()!=1.0)
  71         {
  72                 // In this case we need to render the alpha squares
  73
  74                 const Color bg1(Color::blend(color,Color(0.75, 0.75, 0.75),1.0).clamped());
  75                 const Color bg2(Color::blend(color,Color(0.5, 0.5, 0.5),1.0).clamped());
  76
  77                 Gdk::Color gdk_c1(colorconv_synfig2gdk(bg1));
  78                 Gdk::Color gdk_c2(colorconv_synfig2gdk(bg2));
  79
  80                 bool toggle(false);
  81                 for(int i=0;i<width;i+=square_size)
  82                 {
  83                         const int square_width(min(square_size,width-i));
  84
  85                         if(toggle)
  86                         {
  87                                 gc->set_rgb_fg_color(gdk_c1);
  88                                 window->draw_rectangle(gc, true, ca.get_x()+i, ca.get_y(), square_width, square_size);
  89
  90                                 gc->set_rgb_fg_color(gdk_c2);
  91                                 window->draw_rectangle(gc, true, ca.get_x()+i, ca.get_y()+square_size, square_width, square_size);
  92                                 toggle=false;
  93                         }
  94                         else
  95                         {
  96                                 gc->set_rgb_fg_color(gdk_c2);
  97                                 window->draw_rectangle(gc, true, ca.get_x()+i, ca.get_y(), square_width, square_size);
  98
  99                                 gc->set_rgb_fg_color(gdk_c1);
 100                                 window->draw_rectangle(gc, true, ca.get_x()+i, ca.get_y()+square_size, square_width, square_size);
 101                                 toggle=true;
 102                         }
 103                 }
 104         }
 105         else
 106         {
 107                 // In this case we have a solid color to use
 108                 Gdk::Color gdk_c1(colorconv_synfig2gdk(color));
 109
 110                 gc->set_rgb_fg_color(gdk_c1);
 111                 window->draw_rectangle(gc, true, ca.get_x(), ca.get_y(), width-1, height-1);
 112         }
 113         gc->set_rgb_fg_color(Gdk::Color("#ffffff"));
 114         window->draw_rectangle(gc, false, ca.get_x()+1, ca.get_y()+1, width-3, height-3);
 115         gc->set_rgb_fg_color(Gdk::Color("#000000"));
 116         window->draw_rectangle(gc, false, ca.get_x(), ca.get_y(), width-1, height-1);
 117 }
 118 */
 119
 120 /* === C L A S S E S ======================================================= */
 121
 122
 123
 124 struct studio::Widget_Curves::Channel
 125 {
 126         synfig::String name;
 127         Gdk::Color color;
 128         std::map<synfig::Real,synfig::Real> values;
 129 };
 130
 131 struct studio::Widget_Curves::CurveStruct : sigc::trackable
 132 {
 133         synfigapp::ValueDesc value_desc;
 134         std::vector<Channel> channels;
 135
 136         CurveStruct(const synfigapp::ValueDesc& x):
 137                 value_desc(x)
 138         {
 139                 switch(value_desc.get_value_type())
 140                 {
 141                         case ValueBase::TYPE_REAL:
 142                                 channels.push_back(Channel());
 143                                 channels.back().name="real";
 144                                 channels.back().color=Gdk::Color("#007f7f");
 145                                 break;
 146                         case ValueBase::TYPE_TIME:
 147                                 channels.push_back(Channel());
 148                                 channels.back().name="time";
 149                                 channels.back().color=Gdk::Color("#7f7f00");
 150                                 break;
 151                         case ValueBase::TYPE_INTEGER:
 152                                 channels.push_back(Channel());
 153                                 channels.back().name="int";
 154                                 channels.back().color=Gdk::Color("#7f0000");
 155                                 break;
 156                         case ValueBase::TYPE_BOOL:
 157                                 channels.push_back(Channel());
 158                                 channels.back().name="bool";
 159                                 channels.back().color=Gdk::Color("#ff7f00");
 160                                 break;
 161                         case ValueBase::TYPE_ANGLE:
 162                                 channels.push_back(Channel());
 163                                 channels.back().name="theta";
 164                                 channels.back().color=Gdk::Color("#004f4f");
 165                                 break;
 166                         case ValueBase::TYPE_COLOR:
 167                                 channels.push_back(Channel());
 168                                 channels.back().name="red";
 169                                 channels.back().color=Gdk::Color("#7f0000");
 170                                 channels.push_back(Channel());
 171                                 channels.back().name="green";
 172                                 channels.back().color=Gdk::Color("#007f00");
 173                                 channels.push_back(Channel());
 174                                 channels.back().name="blue";
 175                                 channels.back().color=Gdk::Color("#00007f");
 176                                 channels.push_back(Channel());
 177                                 channels.back().name="alpha";
 178                                 channels.back().color=Gdk::Color("#000000");
 179                                 break;
 180                         case ValueBase::TYPE_VECTOR:
 181                                 channels.push_back(Channel());
 182                                 channels.back().name="x";
 183                                 channels.back().color=Gdk::Color("#7f007f");
 184                                 channels.push_back(Channel());
 185                                 channels.back().name="y";
 186                                 channels.back().color=Gdk::Color("#007f7f");
 187                                 break;
 188                         case ValueBase::TYPE_BLINEPOINT:
 189                                 channels.push_back(Channel());
 190                                 channels.back().name="v.x";
 191                                 channels.back().color=Gdk::Color("#ff7f00");
 192                                 channels.push_back(Channel());
 193                                 channels.back().name="v.y";
 194                                 channels.back().color=Gdk::Color("#7f3f00");
 195
 196                                 channels.push_back(Channel());
 197                                 channels.back().name="width";
 198                                 channels.back().color=Gdk::Color("#000000");
 199
 200                                 channels.push_back(Channel());
 201                                 channels.back().name="origin";
 202                                 channels.back().color=Gdk::Color("#ffffff");
 203
 204                                 channels.push_back(Channel());
 205                                 channels.back().name="tsplit";
 206                                 channels.back().color=Gdk::Color("#ff00ff");
 207
 208                                 channels.push_back(Channel());
 209                                 channels.back().name="t1.x";
 210                                 channels.back().color=Gdk::Color("#ff0000");
 211                                 channels.push_back(Channel());
 212                                 channels.back().name="t1.y";
 213                                 channels.back().color=Gdk::Color("#7f0000");
 214
 215                                 channels.push_back(Channel());
 216                                 channels.back().name="t2.x";
 217                                 channels.back().color=Gdk::Color("#ffff00");
 218                                 channels.push_back(Channel());
 219                                 channels.back().name="t2.y";
 220                                 channels.back().color=Gdk::Color("#7f7f00");
 221                                 break;
 222                         default:
 223                                 throw synfig::Exception::BadType("Bad type for curves");
 224                 }
 225         }
 226
 227         void clear_all_values()
 228         {
 229                 std::vector<Channel>::iterator iter;
 230                 for(iter=channels.begin();iter!=channels.end();++iter)
 231                         iter->values.clear();
 232         }
 233
 234         synfig::Real get_value(int chan, synfig::Real time, synfig::Real tolerance)
 235         {
 236                 std::map<synfig::Real,synfig::Real>::iterator iter;
 237
 238                 // First check to see if we have a value
 239                 // that is "close enough" to the time
 240                 // we are looking for
 241                 iter=channels[chan].values.lower_bound(time);
 242                 if(iter!=channels[chan].values.end() && iter->first-time<=tolerance)
 243                         return -iter->second;
 244
 245                 // Since that didn't work, we now need
 246                 // to go ahead and figure out what the
 247                 // actual value is at that time.
 248                 ValueBase value(value_desc.get_value(time));
 249                 switch(value.get_type())
 250                 {
 251                         case ValueBase::TYPE_REAL:
 252                                 channels[0].values[time]=value.get(Real());
 253                                 break;
 254                         case ValueBase::TYPE_TIME:
 255                                 channels[0].values[time]=value.get(Time());
 256                                 break;
 257                         case ValueBase::TYPE_INTEGER:
 258                                 channels[0].values[time]=value.get(int());
 259                                 break;
 260                         case ValueBase::TYPE_BOOL:
 261                                 channels[0].values[time]=value.get(bool());
 262                                 break;
 263                         case ValueBase::TYPE_ANGLE:
 264                                 channels[0].values[time]=Angle::rad(value.get(Angle())).get();
 265                                 break;
 266                         case ValueBase::TYPE_COLOR:
 267                                 channels[0].values[time]=value.get(Color()).get_r();
 268                                 channels[1].values[time]=value.get(Color()).get_g();
 269                                 channels[2].values[time]=value.get(Color()).get_b();
 270                                 channels[3].values[time]=value.get(Color()).get_a();
 271                                 break;
 272                         case ValueBase::TYPE_VECTOR:
 273                                 channels[0].values[time]=value.get(Vector())[0];
 274                                 channels[1].values[time]=value.get(Vector())[1];
 275                                 break;
 276                         case ValueBase::TYPE_BLINEPOINT:
 277                                 channels[0].values[time]=value.get(BLinePoint()).get_vertex()[0];
 278                                 channels[1].values[time]=value.get(BLinePoint()).get_vertex()[1];
 279                                 channels[2].values[time]=value.get(BLinePoint()).get_width();
 280                                 channels[3].values[time]=value.get(BLinePoint()).get_origin();
 281                                 channels[4].values[time]=value.get(BLinePoint()).get_split_tangent_flag();
 282                                 channels[5].values[time]=value.get(BLinePoint()).get_tangent1()[0];
 283                                 channels[6].values[time]=value.get(BLinePoint()).get_tangent1()[1];
 284                                 channels[7].values[time]=value.get(BLinePoint()).get_tangent2()[0];
 285                                 channels[8].values[time]=value.get(BLinePoint()).get_tangent2()[1];
 286                                 break;
 287                         default:
 288                                 return 0;
 289                 }
 290
 291                 return -channels[chan].values[time];
 292         }
 293
 294         static bool is_not_supported(const synfigapp::ValueDesc& x)
 295         {
 296                 return x.get_value_type() == ValueBase::TYPE_STRING
 297                         || x.get_value_type() == ValueBase::TYPE_CANVAS;
 298         }
 299 };
 300
 301 /* === M E T H O D S ======================================================= */
 302
 303 Widget_Curves::Widget_Curves():
 304         range_adjustment_(new Gtk::Adjustment(-1,-2,2,0.1,0.1,2))
 305 {
 306         set_size_request(64,64);
 307
 308         range_adjustment_->signal_changed().connect(
 309                 sigc::mem_fun(
 310                         *this,
 311                         &Widget_Curves::queue_draw
 312                 )
 313         );
 314         range_adjustment_->signal_value_changed().connect(
 315                 sigc::mem_fun(
 316                         *this,
 317                         &Widget_Curves::queue_draw
 318                 )
 319         );
 320         //set_vadjustment(*range_adjustment_);
 321
 322         signal_expose_event().connect(sigc::mem_fun(*this, &studio::Widget_Curves::redraw));
 323         add_events(Gdk::BUTTON_PRESS_MASK | Gdk::BUTTON_RELEASE_MASK);
 324
 325 }
 326
 327 Widget_Curves::~Widget_Curves()
 328 {
 329 }
 330
 331 void
 332 Widget_Curves::set_time_adjustment(Gtk::Adjustment&x)
 333 {
 334         time_adjustment_=&x;
 335         time_adjustment_->signal_changed().connect(
 336                 sigc::mem_fun(
 337                         *this,
 338                         &Widget_Curves::queue_draw
 339                 )
 340         );
 341         time_adjustment_->signal_value_changed().connect(
 342                 sigc::mem_fun(
 343                         *this,
 344                         &Widget_Curves::queue_draw
 345                 )
 346         );
 347         //set_hadjustment(*time_adjustment_);
 348 }
 349
 350 void
 351 Widget_Curves::clear()
 352 {
 353         curve_list_.clear();
 354 }
 355
 356 void
 357 Widget_Curves::refresh()
 358 {
 359         std::list<CurveStruct>::iterator curve_iter;
 360         for(curve_iter=curve_list_.begin();curve_iter!=curve_list_.end();++curve_iter)
 361         {
 362                 curve_iter->clear_all_values();
 363         }
 364         queue_draw();
 365 }
 366
 367 void
 368 Widget_Curves::set_value_descs(std::list<synfigapp::ValueDesc> value_descs)
 369 {
 370         curve_list_.clear();
 371
 372         std::list<synfigapp::ValueDesc>::iterator iter;
 373         for(iter=value_descs.begin();iter!=value_descs.end();++iter)
 374         {
 375                 if (CurveStruct::is_not_supported(*iter))
 376                         continue;
 377
 378                 try {
 379                         curve_list_.push_back(*iter);
 380                         if(iter->is_value_node())
 381                         {
 382                                 iter->get_value_node()->signal_changed().connect(
 383                                         sigc::mem_fun(
 384                                                 *this,
 385                                                 &studio::Widget_Curves::refresh
 386                                         )
 387                                 );
 388                         }
 389                         if(iter->parent_is_value_node())
 390                         {
 391                                 iter->get_parent_value_node()->signal_changed().connect(
 392                                         sigc::mem_fun(
 393                                                 *this,
 394                                                 &studio::Widget_Curves::refresh
 395                                         )
 396                                 );
 397                         }
 398                         if(iter->parent_is_layer_param())
 399                         {
 400                                 iter->get_layer()->signal_changed().connect(
 401                                         sigc::mem_fun(
 402                                                 *this,
 403                                                 &studio::Widget_Curves::refresh
 404                                         )
 405                                 );
 406                         }
 407                 }catch(synfig::Exception::BadType)
 408                 {
 409                         continue;
 410                 }
 411         }
 412         queue_draw();
 413 }
 414
 415 bool
 416 Widget_Curves::on_event(GdkEvent *event)
 417 {
 418         switch(event->type)
 419         {
 420         case GDK_SCROLL:
 421                 switch(event->scroll.direction)
 422                 {
 423                         case GDK_SCROLL_UP:
 424                                 range_adjustment_->set_page_size(range_adjustment_->get_page_size()/1.25);
 425                                 range_adjustment_->changed();
 426                                 break;
 427                         case GDK_SCROLL_DOWN:
 428                                 range_adjustment_->set_page_size(range_adjustment_->get_page_size()*1.25);
 429                                 range_adjustment_->changed();
 430                                 break;
 431                         default:
 432                                 break;
 433                 }
 434                 break;
 435         default:
 436                 return Gtk::DrawingArea::on_event(event);
 437                 break;
 438         }
 439
 440         return true;
 441
 442 /*      switch(event->type)
 443         {
 444         case GDK_BUTTON_PRESS:
 445                 if(event->button.button==1)
 446                 {
 447                         signal_activate_();
 448                         return true;
 449                 }
 450                 if(event->button.button==3)
 451                 {
 452                         signal_secondary_();
 453                         return true;
 454                 }
 455                 break;
 456
 457         default:
 458                 break;
 459         }
 460         return false;
 461 */
 462 }
 463
 464 bool
 465 Widget_Curves::redraw(GdkEventExpose */*bleh*/)
 466 {
 467         const int h(get_height());
 468         const int w(get_width());
 469         get_window()->clear();
 470
 471         if(!time_adjustment_ || !range_adjustment_ || !h || !w)
 472                 return false;
 473
 474         Glib::RefPtr<Gdk::GC> gc(Gdk::GC::create(get_window()));
 475
 476         const Real t_begin(time_adjustment_->get_lower());
 477         const Real t_end(time_adjustment_->get_upper());
 478         const Real dt((t_end-t_begin)/w);
 479
 480         const Real r_bottom(range_adjustment_->get_value());
 481         const Real r_top(r_bottom+range_adjustment_->get_page_size());
 482         const Real dr((r_top-r_bottom)/h);
 483         Real r_max(-100000000);
 484         Real r_min(100000000);
 485
 486         std::list<CurveStruct>::iterator curve_iter;
 487
 488         vector<Gdk::Point> points[10];
 489
 490         gc->set_function(Gdk::COPY);
 491         gc->set_line_attributes(1,Gdk::LINE_SOLID,Gdk::CAP_BUTT,Gdk::JOIN_MITER);
 492
 493         // Draw zero mark
 494         gc->set_rgb_fg_color(Gdk::Color("#4f4f4f"));
 495         get_window()->draw_rectangle(gc, false, 0, round_to_int((0-r_bottom)/dr), w, 0);
 496
 497         // Draw current time
 498         gc->set_rgb_fg_color(Gdk::Color("#00007f"));
 499         get_window()->draw_rectangle(gc, false, round_to_int((time_adjustment_->get_value()-t_begin)/dt), 0, 0, h);
 500
 501         for(curve_iter=curve_list_.begin();curve_iter!=curve_list_.end();++curve_iter)
 502         {
 503                 Real t;
 504                 int i;
 505                 int channels(curve_iter->channels.size());
 506                 for(i=0;i<channels;i++)
 507                         points[i].clear();
 508
 509                 for(i=0,t=t_begin;i<w;i++,t+=dt)
 510                 {
 511                         for(int chan=0;chan<channels;chan++)
 512                         {
 513                                 Real x(curve_iter->get_value(chan,t,dt));
 514                                 r_max=max(r_max,x);
 515                                 r_min=min(r_min,x);
 516                                 points[chan].push_back(
 517                                         Gdk::Point(
 518                                                 i,
 519                                                 round_to_int(
 520                                                         (
 521                                                                 x-r_bottom
 522                                                         )/dr
 523                                                 )
 524                                         )
 525                                 );
 526                         }
 527                 }
 528
 529                 for(int chan=0;chan<channels;chan++)
 530                 {
 531                         gc->set_rgb_fg_color(curve_iter->channels[chan].color);
 532
 533                         // Draw the curve
 534                         get_window()->draw_lines(gc, Glib::ArrayHandle<Gdk::Point>(points[chan]));
 535
 536                         Glib::RefPtr<Pango::Layout> layout(Pango::Layout::create(get_pango_context()));
 537
 538                         layout->set_text(curve_iter->channels[chan].name);
 539                         get_window()->draw_layout(gc, 1, points[chan][0].get_y()+1, layout);
 540                 }
 541         }
 542
 543         if(!curve_list_.empty())
 544         {
 545                 range_adjustment_->set_upper(r_max+range_adjustment_->get_page_size()/2);
 546                 range_adjustment_->set_lower(r_min-range_adjustment_->get_page_size()/2);
 547         }
 548         get_window()->get_update_area();
 549
 550         return true;
 551 }