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