1 /* === S Y N F I G ========================================================= */
2 /*! \file savecanvas.cpp
8 ** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
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.
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.
21 /* ========================================================================= */
23 /* === H E A D E R S ======================================================= */
32 #ifdef HAVE_SYS_ERRNO_H
33 # include <sys/errno.h>
36 #include "savecanvas.h"
38 #include "valuenode.h"
39 #include "valuenode_subtract.h"
40 #include "valuenode_animated.h"
41 #include "valuenode_composite.h"
42 #include "valuenode_const.h"
43 #include "valuenode_linear.h"
44 #include "valuenode_dynamiclist.h"
45 #include "valuenode_reference.h"
46 #include "valuenode_segcalctangent.h"
47 #include "valuenode_segcalcvertex.h"
48 #include "valuenode_bline.h"
53 #include "paramdesc.h"
55 #include <libxml++/libxml++.h>
56 #include <ETL/stringf>
61 #include <libxml/tree.h>
66 /* === U S I N G =========================================================== */
70 using namespace synfig;
72 /* === M A C R O S ========================================================= */
74 #define COLOR_VALUE_TYPE_FORMAT "%f"
75 #define VECTOR_VALUE_TYPE_FORMAT "%0.10f"
76 #define TIME_TYPE_FORMAT "%0.3f"
77 #define VIEW_BOX_FORMAT "%f %f %f %f"
79 /* === G L O B A L S ======================================================= */
81 /* === P R O C E D U R E S ================================================= */
83 xmlpp::Element* encode_canvas(xmlpp::Element* root,Canvas::ConstHandle canvas);
84 xmlpp::Element* encode_value_node(xmlpp::Element* root,ValueNode::ConstHandle value_node,Canvas::ConstHandle canvas);
86 xmlpp::Element* encode_keyframe(xmlpp::Element* root,const Keyframe &kf, float fps)
88 root->set_name("keyframe");
89 root->set_attribute("time",kf.get_time().get_string(fps));
90 if(!kf.get_description().empty())
91 root->set_child_text(kf.get_description());
96 xmlpp::Element* encode_real(xmlpp::Element* root,Real v)
98 root->set_name("real");
99 root->set_attribute("value",strprintf(VECTOR_VALUE_TYPE_FORMAT,v));
103 xmlpp::Element* encode_time(xmlpp::Element* root,Time t, float /*fps*/=0)
105 root->set_name("time");
106 //root->set_attribute("value",t.get_string(fps));
107 root->set_attribute("value",t.get_string());
111 xmlpp::Element* encode_integer(xmlpp::Element* root,int i)
113 root->set_name("integer");
114 root->set_attribute("value",strprintf("%i",i));
118 xmlpp::Element* encode_bool(xmlpp::Element* root,bool b)
120 root->set_name("bool");
121 root->set_attribute("value",b?"true":"false");
125 xmlpp::Element* encode_string(xmlpp::Element* root,const String &str)
127 root->set_name("string");
128 root->set_child_text(str);
132 xmlpp::Element* encode_vector(xmlpp::Element* root,Vector vect)
134 root->set_name("vector");
135 root->add_child("x")->set_child_text(strprintf(VECTOR_VALUE_TYPE_FORMAT,(float)vect[0]));
136 root->add_child("y")->set_child_text(strprintf(VECTOR_VALUE_TYPE_FORMAT,(float)vect[1]));
140 xmlpp::Element* encode_color(xmlpp::Element* root,Color color)
142 root->set_name("color");
143 root->add_child("r")->set_child_text(strprintf(COLOR_VALUE_TYPE_FORMAT,(float)color.get_r()));
144 root->add_child("g")->set_child_text(strprintf(COLOR_VALUE_TYPE_FORMAT,(float)color.get_g()));
145 root->add_child("b")->set_child_text(strprintf(COLOR_VALUE_TYPE_FORMAT,(float)color.get_b()));
146 root->add_child("a")->set_child_text(strprintf(COLOR_VALUE_TYPE_FORMAT,(float)color.get_a()));
150 xmlpp::Element* encode_angle(xmlpp::Element* root,Angle theta)
152 root->set_name("angle");
153 root->set_attribute("value",strprintf("%f",(float)Angle::deg(theta).get()));
157 xmlpp::Element* encode_segment(xmlpp::Element* root,Segment seg)
159 root->set_name("segment");
160 encode_vector(root->add_child("p1")->add_child("vector"),seg.p1);
161 encode_vector(root->add_child("t1")->add_child("vector"),seg.t1);
162 encode_vector(root->add_child("p2")->add_child("vector"),seg.p2);
163 encode_vector(root->add_child("t2")->add_child("vector"),seg.t2);
167 xmlpp::Element* encode_bline_point(xmlpp::Element* root,BLinePoint bline_point)
169 root->set_name(ValueBase::type_name(ValueBase::TYPE_BLINEPOINT));
171 encode_vector(root->add_child("vertex")->add_child("vector"),bline_point.get_vertex());
172 encode_vector(root->add_child("t1")->add_child("vector"),bline_point.get_tangent1());
174 if(bline_point.get_split_tangent_flag())
175 encode_vector(root->add_child("t2")->add_child("vector"),bline_point.get_tangent2());
177 encode_real(root->add_child("width")->add_child("real"),bline_point.get_width());
178 encode_real(root->add_child("origin")->add_child("real"),bline_point.get_origin());
182 xmlpp::Element* encode_gradient(xmlpp::Element* root,Gradient x)
184 root->set_name("gradient");
186 Gradient::const_iterator iter;
188 for(iter=x.begin();iter!=x.end();iter++)
190 xmlpp::Element *cpoint(encode_color(root->add_child("color"),iter->color));
191 cpoint->set_attribute("pos",strprintf("%f",iter->pos));
197 xmlpp::Element* encode_value(xmlpp::Element* root,const ValueBase &data,Canvas::ConstHandle canvas=0);
199 xmlpp::Element* encode_list(xmlpp::Element* root,std::list<ValueBase> list, Canvas::ConstHandle canvas=0)
201 root->set_name("list");
205 encode_value(root->add_child("value"),list.front(),canvas);
212 xmlpp::Element* encode_value(xmlpp::Element* root,const ValueBase &data,Canvas::ConstHandle canvas)
214 switch(data.get_type())
216 case ValueBase::TYPE_REAL:
217 return encode_real(root,data.get(Real()));
218 case ValueBase::TYPE_TIME:
220 return encode_time(root,data.get(Time()),canvas->rend_desc().get_frame_rate());
222 return encode_time(root,data.get(Time()));
223 case ValueBase::TYPE_INTEGER:
224 return encode_integer(root,data.get(int()));
225 case ValueBase::TYPE_COLOR:
226 return encode_color(root,data.get(Color()));
227 case ValueBase::TYPE_VECTOR:
228 return encode_vector(root,data.get(Vector()));
229 case ValueBase::TYPE_ANGLE:
230 return encode_angle(root,data.get(Angle()));
231 case ValueBase::TYPE_BOOL:
232 return encode_bool(root,data.get(bool()));
233 case ValueBase::TYPE_STRING:
234 return encode_string(root,data.get(String()));
235 case ValueBase::TYPE_SEGMENT:
236 return encode_segment(root,data.get(Segment()));
237 case ValueBase::TYPE_BLINEPOINT:
238 return encode_bline_point(root,data.get(BLinePoint()));
239 case ValueBase::TYPE_GRADIENT:
240 return encode_gradient(root,data.get(Gradient()));
241 case ValueBase::TYPE_LIST:
242 return encode_list(root,data,canvas);
243 case ValueBase::TYPE_CANVAS:
244 return encode_canvas(root,data.get(Canvas::Handle()).get());
245 case ValueBase::TYPE_NIL:
246 synfig::error("Encountered NIL ValueBase");
247 root->set_name("nil");
250 synfig::error(strprintf("Unknown value(%s), cannot create XML representation!",ValueBase::type_name(data.get_type()).c_str()));
251 root->set_name("nil");
256 xmlpp::Element* encode_animated(xmlpp::Element* root,ValueNode_Animated::ConstHandle value_node,Canvas::ConstHandle canvas=0)
259 root->set_name("animated");
261 root->set_attribute("type",ValueBase::type_name(value_node->get_type()));
263 const ValueNode_Animated::WaypointList &waypoint_list=value_node->waypoint_list();
264 ValueNode_Animated::WaypointList::const_iterator iter;
266 for(iter=waypoint_list.begin();iter!=waypoint_list.end();++iter)
268 xmlpp::Element *waypoint_node=root->add_child("waypoint");
269 //waypoint_node->set_attribute("time",iter->get_time().get_string(canvas->rend_desc().get_frame_rate()));
270 waypoint_node->set_attribute("time",iter->get_time().get_string());
272 //waypoint_node->add_child(encode_value(iter->get_value(),canvas));
273 if(iter->get_value_node()->is_exported())
274 waypoint_node->set_attribute("use",iter->get_value_node()->get_relative_id(canvas));
276 ValueNode::ConstHandle value_node = iter->get_value_node();
277 if(ValueNode_Const::ConstHandle::cast_dynamic(value_node)) {
278 const ValueBase data = ValueNode_Const::ConstHandle::cast_dynamic(value_node)->get_value();
279 if (data.get_type() == ValueBase::TYPE_CANVAS)
280 waypoint_node->set_attribute("use",data.get(Canvas::Handle()).get()->get_relative_id(canvas));
282 encode_value_node(waypoint_node->add_child("value_node"),iter->get_value_node(),canvas);
285 encode_value_node(waypoint_node->add_child("value_node"),iter->get_value_node(),canvas);
288 switch(iter->get_before())
290 case INTERPOLATION_HALT:
291 waypoint_node->set_attribute("before","halt");
293 case INTERPOLATION_LINEAR:
294 // This is the default value for angles, so don't add a new attribute for them
295 if (value_node->get_type() != ValueBase::TYPE_ANGLE)
296 waypoint_node->set_attribute("before","linear");
298 case INTERPOLATION_MANUAL:
299 waypoint_node->set_attribute("before","manual");
301 case INTERPOLATION_CONSTANT:
302 waypoint_node->set_attribute("before","constant");
304 case INTERPOLATION_TCB:
305 // This is the default value, so don't add a new attribute (unless it's an angle - they default to linear)
306 if (value_node->get_type() == ValueBase::TYPE_ANGLE)
307 waypoint_node->set_attribute("before","auto");
310 error("Unknown waypoint type for \"before\" attribute");
313 switch(iter->get_after())
315 case INTERPOLATION_HALT:
316 waypoint_node->set_attribute("after","halt");
318 case INTERPOLATION_LINEAR:
319 // This is the default value for angles, so don't add a new attribute for them
320 if (value_node->get_type() != ValueBase::TYPE_ANGLE)
321 waypoint_node->set_attribute("after","linear");
323 case INTERPOLATION_MANUAL:
324 waypoint_node->set_attribute("after","manual");
326 case INTERPOLATION_CONSTANT:
327 waypoint_node->set_attribute("after","constant");
329 case INTERPOLATION_TCB:
330 // This is the default value, so don't add a new attribute (unless it's an angle - they default to linear)
331 if (value_node->get_type() == ValueBase::TYPE_ANGLE)
332 waypoint_node->set_attribute("after","auto");
335 error("Unknown waypoint type for \"after\" attribute");
338 if(iter->get_tension()!=0.0)
339 waypoint_node->set_attribute("tension",strprintf("%f",iter->get_tension()));
340 if(iter->get_time_tension()!=0.0)
341 waypoint_node->set_attribute("temporal-tension",strprintf("%f",iter->get_time_tension()));
342 if(iter->get_continuity()!=0.0)
343 waypoint_node->set_attribute("continuity",strprintf("%f",iter->get_continuity()));
344 if(iter->get_bias()!=0.0)
345 waypoint_node->set_attribute("bias",strprintf("%f",iter->get_bias()));
352 xmlpp::Element* encode_composite(xmlpp::Element* root,ValueNode_Composite::ConstHandle value_node,Canvas::ConstHandle canvas=0)
355 root->set_name("composite");
357 root->set_attribute("type",ValueBase::type_name(value_node->get_type()));
360 for(i=0;i<value_node->link_count();i++)
362 string name(strprintf("c%d",i+1));
363 assert(value_node->get_link(i));
364 if(value_node->get_link(i)->is_exported())
365 root->set_attribute(name,value_node->get_link(i)->get_relative_id(canvas));
367 encode_value_node(root->add_child(name)->add_child("value_node"),value_node->get_link(i).constant(),canvas);
373 xmlpp::Element* encode_subtract(xmlpp::Element* root,ValueNode_Subtract::ConstHandle value_node,Canvas::ConstHandle canvas=0)
376 root->set_name("subtract");
378 ValueNode::ConstHandle lhs=value_node->get_lhs();
379 ValueNode::ConstHandle rhs=value_node->get_rhs();
380 ValueNode::ConstHandle scalar=value_node->get_scalar();
385 root->set_attribute("type",ValueBase::type_name(value_node->get_type()));
388 warning("LHS is equal to RHS, this <subtract> will always be zero!");
390 //if(value_node->get_scalar()!=1)
391 // root->set_attribute("scalar",strprintf(VECTOR_VALUE_TYPE_FORMAT,value_node->get_scalar()));
393 if(!scalar->get_id().empty())
394 root->set_attribute("scalar",scalar->get_relative_id(canvas));
396 encode_value_node(root->add_child("scalar")->add_child("value_node"),scalar,canvas);
398 if(!lhs->get_id().empty())
399 root->set_attribute("lhs",lhs->get_relative_id(canvas));
401 encode_value_node(root->add_child("lhs")->add_child("value_node"),lhs,canvas);
403 if(!rhs->get_id().empty())
404 root->set_attribute("rhs",rhs->get_relative_id(canvas));
406 encode_value_node(root->add_child("rhs")->add_child("value_node"),rhs,canvas);
411 xmlpp::Element* encode_dynamic_list(xmlpp::Element* root,ValueNode_DynamicList::ConstHandle value_node,Canvas::ConstHandle canvas=0)
414 const float fps(canvas?canvas->rend_desc().get_frame_rate():0);
416 root->set_name(value_node->get_name());
418 root->set_attribute("type",ValueBase::type_name(value_node->get_contained_type()));
420 vector<ValueNode_DynamicList::ListEntry>::const_iterator iter;
422 ValueNode_BLine::ConstHandle bline_value_node(ValueNode_BLine::ConstHandle::cast_dynamic(value_node));
426 if(bline_value_node->get_loop())
427 root->set_attribute("loop","true");
429 root->set_attribute("loop","false");
432 for(iter=value_node->list.begin();iter!=value_node->list.end();++iter)
434 xmlpp::Element *entry_node=root->add_child("entry");
435 assert(iter->value_node);
436 if(!iter->value_node->get_id().empty())
437 entry_node->set_attribute("use",iter->value_node->get_relative_id(canvas));
439 encode_value_node(entry_node->add_child("value_node"),iter->value_node,canvas);
443 typedef synfig::ValueNode_DynamicList::ListEntry::Activepoint Activepoint;
444 typedef synfig::ValueNode_DynamicList::ListEntry::ActivepointList ActivepointList;
445 String begin_sequence;
448 const ActivepointList& timing_info(iter->timing_info);
449 ActivepointList::const_iterator entry_iter;
451 for(entry_iter=timing_info.begin();entry_iter!=timing_info.end();++entry_iter)
452 if(entry_iter->state==true)
454 if(entry_iter->priority)
456 printf("begin priority is %d\n", entry_iter->priority);
457 begin_sequence+=strprintf("p%d ",entry_iter->priority);
459 begin_sequence+=entry_iter->time.get_string(fps)+", ";
463 if(entry_iter->priority)
465 printf("end priority is %d\n", entry_iter->priority);
466 end_sequence+=strprintf("p%d ",entry_iter->priority);
468 end_sequence+=entry_iter->time.get_string(fps)+", ";
471 // If this is just a plane-jane vanilla entry,
472 // then don't bother with begins and ends
473 if(end_sequence.empty() && begin_sequence=="SOT, ")
474 begin_sequence.clear();
476 if(!begin_sequence.empty())
478 // Remove the last ", " stuff
479 begin_sequence=String(begin_sequence.begin(),begin_sequence.end()-2);
481 entry_node->set_attribute("on",begin_sequence);
484 if(!end_sequence.empty())
486 // Remove the last ", " stuff
487 end_sequence=String(end_sequence.begin(),end_sequence.end()-2);
489 entry_node->set_attribute("off",end_sequence);
497 // Generic linkable data node entry
498 xmlpp::Element* encode_linkable_value_node(xmlpp::Element* root,LinkableValueNode::ConstHandle value_node,Canvas::ConstHandle canvas=0)
501 root->set_name(value_node->get_name());
503 root->set_attribute("type",ValueBase::type_name(value_node->get_type()));
506 for(i=0;i<value_node->link_count();i++)
508 ValueNode::ConstHandle link=value_node->get_link(i).constant();
510 throw runtime_error("Bad link");
511 if(link->is_exported())
512 root->set_attribute(value_node->link_name(i),link->get_relative_id(canvas));
514 encode_value_node(root->add_child(value_node->link_name(i))->add_child("value_node"),link,canvas);
520 xmlpp::Element* encode_value_node(xmlpp::Element* root,ValueNode::ConstHandle value_node,Canvas::ConstHandle canvas)
524 if(ValueNode_Animated::ConstHandle::cast_dynamic(value_node))
525 encode_animated(root,ValueNode_Animated::ConstHandle::cast_dynamic(value_node),canvas);
527 if(ValueNode_Composite::ConstHandle::cast_dynamic(value_node))
528 encode_composite(root,ValueNode_Composite::ConstHandle::cast_dynamic(value_node),canvas);
530 if(ValueNode_Subtract::ConstHandle::cast_dynamic(value_node))
531 encode_subtract(root,ValueNode_Subtract::ConstHandle::cast_dynamic(value_node),canvas);
533 if(ValueNode_DynamicList::ConstHandle::cast_dynamic(value_node))
534 encode_dynamic_list(root,ValueNode_DynamicList::ConstHandle::cast_dynamic(value_node),canvas);
535 else if(ValueNode_Const::ConstHandle::cast_dynamic(value_node))
537 encode_value(root,ValueNode_Const::ConstHandle::cast_dynamic(value_node)->get_value(),canvas);
540 if(LinkableValueNode::ConstHandle::cast_dynamic(value_node))
541 encode_linkable_value_node(root,LinkableValueNode::ConstHandle::cast_dynamic(value_node),canvas);
544 error(_("Unknown ValueNode Type (%s), cannot create an XML representation"),value_node->get_local_name().c_str());
545 root->set_name("nil");
550 if(!value_node->get_id().empty())
551 root->set_attribute("id",value_node->get_id());
553 if(value_node->rcount()>1)
554 root->set_attribute("guid",(value_node->get_guid()^canvas->get_root()->get_guid()).get_string());
559 xmlpp::Element* encode_layer(xmlpp::Element* root,Layer::ConstHandle layer)
561 root->set_name("layer");
563 root->set_attribute("type",layer->get_name());
564 root->set_attribute("active",layer->active()?"true":"false");
566 if(!layer->get_version().empty())
567 root->set_attribute("version",layer->get_version());
568 if(!layer->get_description().empty())
569 root->set_attribute("desc",layer->get_description());
570 if(!layer->get_group().empty())
571 root->set_attribute("group",layer->get_group());
573 Layer::Vocab vocab(layer->get_param_vocab());
574 Layer::Vocab::const_iterator iter;
576 const Layer::DynamicParamList &dynamic_param_list=layer->dynamic_param_list();
578 for(iter=vocab.begin();iter!=vocab.end();++iter)
580 // Handle dynamic parameters
581 if(dynamic_param_list.count(iter->get_name()))
583 xmlpp::Element *node=root->add_child("param");
584 node->set_attribute("name",iter->get_name());
586 handle<const ValueNode> value_node=dynamic_param_list.find(iter->get_name())->second;
588 // If the valuenode has no ID, then it must be defined in-place
589 if(value_node->get_id().empty())
591 encode_value_node(node->add_child("value_node"),value_node,layer->get_canvas().constant());
595 node->set_attribute("use",value_node->get_relative_id(layer->get_canvas()));
598 else // Handle normal parameters
599 if(iter->get_critical())
601 ValueBase value=layer->get_param(iter->get_name());
602 if(!value.is_valid())
604 error("Layer doesn't know its own vocabulary -- "+iter->get_name());
608 if(value.get_type()==ValueBase::TYPE_CANVAS)
610 // the ->is_inline() below was crashing if the canvas
611 // contained a PasteCanvas with the default <No Image
612 // Selected> Canvas setting; this avoids the crash
613 if (!value.get(Canvas::LooseHandle()))
616 if (!value.get(Canvas::LooseHandle())->is_inline())
618 Canvas::Handle child(value.get(Canvas::LooseHandle()));
620 if(!value.get(Canvas::Handle()))
622 xmlpp::Element *node=root->add_child("param");
623 node->set_attribute("name",iter->get_name());
624 node->set_attribute("use",child->get_relative_id(layer->get_canvas()));
628 xmlpp::Element *node=root->add_child("param");
629 node->set_attribute("name",iter->get_name());
631 encode_value(node->add_child("value"),value,layer->get_canvas().constant());
639 xmlpp::Element* encode_canvas(xmlpp::Element* root,Canvas::ConstHandle canvas)
642 const RendDesc &rend_desc=canvas->rend_desc();
643 root->set_name("canvas");
645 if(canvas->is_root())
646 root->set_attribute("version","0.1");
648 if(!canvas->get_id().empty() && !canvas->is_root() && !canvas->is_inline())
649 root->set_attribute("id",canvas->get_id());
651 if(!canvas->parent() || canvas->parent()->rend_desc().get_w()!=canvas->rend_desc().get_w())
652 root->set_attribute("width",strprintf("%d",rend_desc.get_w()));
654 if(!canvas->parent() || canvas->parent()->rend_desc().get_h()!=canvas->rend_desc().get_h())
655 root->set_attribute("height",strprintf("%d",rend_desc.get_h()));
657 if(!canvas->parent() || canvas->parent()->rend_desc().get_x_res()!=canvas->rend_desc().get_x_res())
658 root->set_attribute("xres",strprintf("%f",rend_desc.get_x_res()));
660 if(!canvas->parent() || canvas->parent()->rend_desc().get_y_res()!=canvas->rend_desc().get_y_res())
661 root->set_attribute("yres",strprintf("%f",rend_desc.get_y_res()));
664 if(!canvas->parent() ||
665 canvas->parent()->rend_desc().get_tl()!=canvas->rend_desc().get_tl() ||
666 canvas->parent()->rend_desc().get_br()!=canvas->rend_desc().get_br())
667 root->set_attribute("view-box",strprintf(VIEW_BOX_FORMAT,
668 rend_desc.get_tl()[0],
669 rend_desc.get_tl()[1],
670 rend_desc.get_br()[0],
671 rend_desc.get_br()[1])
674 if(!canvas->parent() || canvas->parent()->rend_desc().get_antialias()!=canvas->rend_desc().get_antialias())
675 root->set_attribute("antialias",strprintf("%d",rend_desc.get_antialias()));
677 if(!canvas->parent())
678 root->set_attribute("fps",strprintf(TIME_TYPE_FORMAT,rend_desc.get_frame_rate()));
680 if(!canvas->parent() || canvas->parent()->rend_desc().get_time_start()!=canvas->rend_desc().get_time_start())
681 root->set_attribute("begin-time",rend_desc.get_time_start().get_string(rend_desc.get_frame_rate()));
683 if(!canvas->parent() || canvas->parent()->rend_desc().get_time_end()!=canvas->rend_desc().get_time_end())
684 root->set_attribute("end-time",rend_desc.get_time_end().get_string(rend_desc.get_frame_rate()));
686 if(!canvas->is_inline())
688 root->set_attribute("bgcolor",strprintf(VIEW_BOX_FORMAT,
689 rend_desc.get_bg_color().get_r(),
690 rend_desc.get_bg_color().get_g(),
691 rend_desc.get_bg_color().get_b(),
692 rend_desc.get_bg_color().get_a())
695 if(!canvas->get_name().empty())
696 root->add_child("name")->set_child_text(canvas->get_name());
697 if(!canvas->get_description().empty())
698 root->add_child("desc")->set_child_text(canvas->get_description());
699 if(!canvas->get_author().empty())
700 root->add_child("author")->set_child_text(canvas->get_description());
702 std::list<String> meta_keys(canvas->get_meta_data_keys());
703 while(!meta_keys.empty())
705 xmlpp::Element* meta_element(root->add_child("meta"));
706 meta_element->set_attribute("name",meta_keys.front());
707 meta_element->set_attribute("content",canvas->get_meta_data(meta_keys.front()));
708 meta_keys.pop_front();
710 for(KeyframeList::const_iterator iter=canvas->keyframe_list().begin();iter!=canvas->keyframe_list().end();++iter)
711 encode_keyframe(root->add_child("keyframe"),*iter,canvas->rend_desc().get_frame_rate());
714 // Output the <defs> section
715 if(!canvas->is_inline() && !canvas->value_node_list().empty() || !canvas->children().empty())
717 xmlpp::Element *node=root->add_child("defs");
718 const ValueNodeList &value_node_list(canvas->value_node_list());
720 for(ValueNodeList::const_iterator iter=value_node_list.begin();iter!=value_node_list.end();++iter)
722 // If the value_node is a constant, then use the shorthand
723 if(handle<ValueNode_Const>::cast_dynamic(*iter))
725 ValueNode_Const::Handle value_node(ValueNode_Const::Handle::cast_dynamic(*iter));
726 reinterpret_cast<xmlpp::Element*>(encode_value(node->add_child("value"),value_node->get_value()))->set_attribute("id",value_node->get_id());
729 encode_value_node(node->add_child("value_node"),*iter,canvas);
733 for(Canvas::Children::const_iterator iter=canvas->children().begin();iter!=canvas->children().end();++iter)
735 encode_canvas(node->add_child("canvas"),*iter);
739 Canvas::const_reverse_iterator iter;
741 for(iter=canvas->rbegin();iter!=canvas->rend();++iter)
742 encode_layer(root->add_child("layer"),*iter);
748 synfig::save_canvas(const String &filename, Canvas::ConstHandle canvas)
750 ChangeLocale change_locale(LC_NUMERIC, "C");
752 synfig::String tmp_filename(filename+".TMP");
754 if (String(filename.begin() + filename.find_last_of('.')+1, filename.end()) == "sifz")
755 xmlSetCompressMode(9);
757 xmlSetCompressMode(0);
762 xmlpp::Document document;
764 encode_canvas(document.create_root_node("canvas"),canvas);
766 document.write_to_file_formatted(tmp_filename);
768 catch(...) { synfig::error("synfig::save_canvas(): Caught unknown exception"); return false; }
772 // On Win32 platforms, rename() has bad behavior. work around it.
773 char old_file[80]="sif.XXXXXXXX";
775 rename(filename.c_str(),old_file);
776 if(rename(tmp_filename.c_str(),filename.c_str())!=0)
778 rename(old_file,tmp_filename.c_str());
779 synfig::error("synfig::save_canvas(): Unable to rename file to correct filename, errno=%d",errno);
784 if(rename(tmp_filename.c_str(),filename.c_str())!=0)
786 synfig::error("synfig::save_canvas(): Unable to rename file to correct filename, errno=%d",errno);
795 synfig::canvas_to_string(Canvas::ConstHandle canvas)
797 ChangeLocale change_locale(LC_NUMERIC, "C");
800 xmlpp::Document document;
802 encode_canvas(document.create_root_node("canvas"),canvas);
804 return document.write_to_string_formatted();