X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=synfig-core%2Fsrc%2Fsynfig%2Flayer_pastecanvas.cpp;fp=synfig-core%2Fsrc%2Fsynfig%2Flayer_pastecanvas.cpp;h=3fafb8ed6076071b6e76ebb666f86b79e594b368;hb=a095981e18cc37a8ecc7cd237cc22b9c10329264;hp=0000000000000000000000000000000000000000;hpb=9459638ad6797b8139f1e9f0715c96076dbf0890;p=synfig.git diff --git a/synfig-core/src/synfig/layer_pastecanvas.cpp b/synfig-core/src/synfig/layer_pastecanvas.cpp new file mode 100644 index 0000000..3fafb8e --- /dev/null +++ b/synfig-core/src/synfig/layer_pastecanvas.cpp @@ -0,0 +1,570 @@ +/* === S Y N F I G ========================================================= */ +/*! \file layer_pastecanvas.cpp +** \brief Implementation of the "Paste Canvas" layer +** +** $Id$ +** +** \legal +** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley +** Copyright (c) 2007, 2008 Chris Moore +** +** This package is free software; you can redistribute it and/or +** modify it under the terms of the GNU General Public License as +** published by the Free Software Foundation; either version 2 of +** the License, or (at your option) any later version. +** +** This package is distributed in the hope that it will be useful, +** but WITHOUT ANY WARRANTY; without even the implied warranty of +** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +** General Public License for more details. +** \endlegal +*/ +/* ========================================================================= */ + +/* === H E A D E R S ======================================================= */ + +#ifdef USING_PCH +# include "pch.h" +#else +#ifdef HAVE_CONFIG_H +# include +#endif + +#include "layer_pastecanvas.h" +#include "string.h" +#include "time.h" +#include "context.h" +#include "paramdesc.h" +#include "renddesc.h" +#include "surface.h" +#include "value.h" +#include "valuenode.h" +#include "canvas.h" + +#endif + +/* === U S I N G =========================================================== */ + +using namespace etl; +using namespace std; +using namespace synfig; + +/* === M A C R O S ========================================================= */ + +#define MAX_DEPTH 10 + +// if this isn't defined, the 'dead heads' in examples/pirates.sifz don't render properly +#define SYNFIG_CLIP_PASTECANVAS + +//#ifdef __APPLE__ +//#undef SYNFIG_CLIP_PASTECANVAS +//#endif + +/* === C L A S S E S ======================================================= */ + +class depth_counter // Makes our recursive depth counter exception-safe +{ + int *depth; +public: + depth_counter(int &x):depth(&x) { (*depth)++; } + ~depth_counter() { (*depth)--; } +}; + +/* === G L O B A L S ======================================================= */ + +SYNFIG_LAYER_INIT(Layer_PasteCanvas); +SYNFIG_LAYER_SET_NAME(Layer_PasteCanvas,"PasteCanvas"); // todo: use paste_canvas +SYNFIG_LAYER_SET_LOCAL_NAME(Layer_PasteCanvas,N_("Paste Canvas")); +SYNFIG_LAYER_SET_CATEGORY(Layer_PasteCanvas,N_("Other")); +SYNFIG_LAYER_SET_VERSION(Layer_PasteCanvas,"0.1"); +SYNFIG_LAYER_SET_CVS_ID(Layer_PasteCanvas,"$Id$"); + +/* === M E T H O D S ======================================================= */ + +Layer_PasteCanvas::Layer_PasteCanvas(): + origin(0,0), + focus(0,0), + depth(0), + zoom(0), + time_offset(0), + extra_reference(false) +{ + children_lock=false; + muck_with_time_=true; + curr_time=Time::begin(); +} + +Layer_PasteCanvas::~Layer_PasteCanvas() +{ +/* if(canvas) + canvas->parent_set.erase(this); +*/ + + //if(canvas)DEBUGINFO(strprintf("%d",canvas->count())); + + set_sub_canvas(0); + + //if(canvas && (canvas->is_inline() || !get_canvas() || get_canvas()->get_root()!=canvas->get_root())) + //if(extra_reference) + // canvas->unref(); +} + +String +Layer_PasteCanvas::get_local_name()const +{ + if(!canvas) return _("Pasted Canvas"); + if(canvas->is_inline()) return _("Inline Canvas"); + if(canvas->get_root()==get_canvas()->get_root()) return '[' + canvas->get_id() + ']'; + + return '[' + canvas->get_file_name() + ']'; +} + +Layer::Vocab +Layer_PasteCanvas::get_param_vocab()const +{ + Layer::Vocab ret(Layer_Composite::get_param_vocab()); + + ret.push_back(ParamDesc("origin") + .set_local_name(_("Origin")) + .set_description(_("Point where you want the origin to be")) + ); + ret.push_back(ParamDesc("canvas") + .set_local_name(_("Canvas")) + .set_description(_("Canvas to paste")) + ); + ret.push_back(ParamDesc("zoom") + .set_local_name(_("Zoom")) + .set_description(_("Size of canvas")) + ); + + ret.push_back(ParamDesc("time_offset") + .set_local_name(_("Time Offset")) + ); + + ret.push_back(ParamDesc("children_lock") + .set_local_name(_("Children Lock")) + ); + + ret.push_back(ParamDesc("focus") + .set_local_name(_("Focus Point")) + .set_origin("origin") + .set_connect("origin") + .set_description(_("Point to remain fixed when zooming")) + // .set_invisible_duck() + ); + + // optimize_layers() in canvas.cpp makes a new PasteCanvas layer + // and copies over the parameters of the old layer. the + // 'curr_time' member wasn't being copied, so I've added it as a + // hidden, non critical parameter, and now it will be. this + // allows a single exported subcanvas to be used more than once at + // a time, with different time offets in each. see bug #1896557. + ret.push_back(ParamDesc("curr_time") + .set_local_name(_("Current Time")) + .not_critical() + .hidden() + ); + + return ret; +} + +bool +Layer_PasteCanvas::set_param(const String & param, const ValueBase &value) +{ + IMPORT(origin); + IMPORT(focus); + + // IMPORT(canvas); + if(param=="canvas" && value.same_type_as(Canvas::Handle())) + { + set_sub_canvas(value.get(Canvas::Handle())); + return true; + } + + //! \todo this introduces bug 1844764 if enabled; it was introduced in r954. + // http://synfig.org/images/3/3d/Moving-waypoints.sifz is an + // example of an animation that has its waypoints displayed + // incorrectly without this fix; select the outer layer and drag + // the time slider. The linear waypoints don't take effect until + // 5s, but the time slider appears to pass the first one at 3s. +#if 0 + if (param=="time_offset" && value.same_type_as(time_offset)) + { + if (time_offset != value.get(Time())) + { + value.put(&time_offset); + // notify that the time_offset has changed so we can update the + // waypoint positions in parent layers + changed(); + } + return true; + } +#else + IMPORT(time_offset); +#endif + + IMPORT(children_lock); + IMPORT(zoom); + IMPORT(curr_time); + + return Layer_Composite::set_param(param,value); +} + +void +Layer_PasteCanvas::set_sub_canvas(etl::handle x) +{ + if(canvas && muck_with_time_) + remove_child(canvas.get()); + + // if(canvas && (canvas->is_inline() || !get_canvas() || get_canvas()->get_root()!=canvas->get_root())) + if (extra_reference) + canvas->unref(); + + child_changed_connection.disconnect(); + + if (canvas != x) signal_subcanvas_changed()(); + + canvas=x; + + /*if(canvas) + child_changed_connection=canvas->signal_changed().connect( + sigc::mem_fun( + *this, + &Layer_PasteCanvas::changed + ) + ); + */ + if(canvas) + bounds = ((canvas->get_context().get_full_bounding_rect() - focus) * exp(zoom) + origin + focus); + + if(canvas && muck_with_time_) + add_child(canvas.get()); + + if(canvas && (canvas->is_inline() || !get_canvas() || get_canvas()->get_root()!=canvas->get_root())) + { + canvas->ref(); + extra_reference = true; + } + else + extra_reference = false; + + if(canvas) + on_canvas_set(); +} + +// when a pastecanvas that contains another pastecanvas is copy/pasted +// from one document to another, only the outermost pastecanvas was +// getting its renddesc set to match that of its new parent. this +// function is used to recurse through the pastecanvas copying its +// renddesc to any pastecanvases it contains (bug #2116947, svn r2200) +void +Layer_PasteCanvas::update_renddesc() +{ + if(!get_canvas() || !canvas || !canvas->is_inline()) return; + + canvas->rend_desc()=get_canvas()->rend_desc(); + for (Context context = canvas->get_context(); !context->empty(); context++) + { + etl::handle paste = etl::handle::cast_dynamic(*context); + if (paste) paste->update_renddesc(); + } +} + +// This is called whenever the parent canvas gets set/changed +void +Layer_PasteCanvas::on_canvas_set() +{ + //synfig::info("before count()=%d",count()); + if(get_canvas() && canvas && canvas->is_inline() && canvas->parent()!=get_canvas()) + { + //synfig::info("during count()=%d",count()); + canvas->set_inline(get_canvas()); + } + //synfig::info("after count()=%d",count()); +} + +ValueBase +Layer_PasteCanvas::get_param(const String& param)const +{ + EXPORT(origin); + EXPORT(focus); + EXPORT(canvas); + EXPORT(zoom); + EXPORT(time_offset); + EXPORT(children_lock); + EXPORT(curr_time); + + EXPORT_NAME(); + EXPORT_VERSION(); + + return Layer_Composite::get_param(param); +} + +void +Layer_PasteCanvas::set_time(Context context, Time time)const +{ + if(depth==MAX_DEPTH)return;depth_counter counter(depth); + curr_time=time; + + context.set_time(time); + if(canvas) + { + canvas->set_time(time+time_offset); + + bounds=(canvas->get_context().get_full_bounding_rect()-focus)*exp(zoom)+origin+focus; + } + else + bounds=Rect::zero(); +} + +synfig::Layer::Handle +Layer_PasteCanvas::hit_check(synfig::Context context, const synfig::Point &pos)const +{ + if(depth==MAX_DEPTH)return 0;depth_counter counter(depth); + + if (canvas) { + Point target_pos=(pos-focus-origin)/exp(zoom)+focus; + + if(canvas && get_amount() && canvas->get_context().get_color(target_pos).get_a()>=0.25) + { + if(!children_lock) + { + return canvas->get_context().hit_check(target_pos); + } + return const_cast(this); + } + } + return context.hit_check(pos); +} + +Color +Layer_PasteCanvas::get_color(Context context, const Point &pos)const +{ + if(!canvas || !get_amount()) + return context.get_color(pos); + + if(depth==MAX_DEPTH)return Color::alpha();depth_counter counter(depth); + + Point target_pos=(pos-focus-origin)/exp(zoom)+focus; + + return Color::blend(canvas->get_context().get_color(target_pos),context.get_color(pos),get_amount(),get_blend_method()); +} + + +bool +Layer_PasteCanvas::accelerated_render(Context context,Surface *surface,int quality, const RendDesc &renddesc, ProgressCallback *cb)const +{ + if(cb && !cb->amount_complete(0,10000)) return false; + + if(depth==MAX_DEPTH) + // if we are at the extent of our depth, + // then we should just return whatever is under us. + return context.accelerated_render(surface,quality,renddesc,cb); + + depth_counter counter(depth); + + if(!canvas || !get_amount()) + return context.accelerated_render(surface,quality,renddesc,cb); + + SuperCallback stageone(cb,0,4500,10000); + SuperCallback stagetwo(cb,4500,9000,10000); + SuperCallback stagethree(cb,9000,9999,10000); + + RendDesc desc(renddesc); + Vector::value_type zoomfactor=1.0/exp(zoom); + desc.clear_flags(); + desc.set_tl((desc.get_tl()-focus-origin)*zoomfactor+focus); + desc.set_br((desc.get_br()-focus-origin)*zoomfactor+focus); + desc.set_flags(RendDesc::PX_ASPECT); + + if (is_solid_color() || context->empty()) + { + surface->set_wh(renddesc.get_w(),renddesc.get_h()); + surface->clear(); + } + else if (!context.accelerated_render(surface,quality,renddesc,&stageone)) + return false; + + if(muck_with_time_ && curr_time!=Time::begin() && canvas->get_time()!=curr_time+time_offset) + canvas->set_time(curr_time+time_offset); + + Color::BlendMethod blend_method(get_blend_method()); + const Rect full_bounding_rect(canvas->get_context().get_full_bounding_rect()); + + bool blend_using_straight = false; // use 'straight' just for the central blit + + // sometimes the user changes the parameters while we're + // rendering, causing our pasted canvas' bounding box to shrink + // and no longer overlap with our tile. if that has happened, + // let's just stop now - we'll be refreshing soon anyway + //! \todo shouldn't a mutex ensure this isn't needed? + // http://synfig.org/images/d/d2/Bbox-change.sifz is an example + // that shows this happening - open the encapsulation, select the + // 'shade', and toggle the 'invert' parameter quickly. + // Occasionally you'll see: + // error: Context::accelerated_render(): Layer "shade" threw a bad_alloc exception! + // where the shade layer tries to allocate itself a canvas of + // negative proportions, due to changing bounding boxes. + if (!etl::intersect(desc.get_rect(), full_bounding_rect)) + { + warning("%s:%d bounding box shrank while rendering?", __FILE__, __LINE__); + return true; + } + + // we have rendered what's under us, if necessary + if(context->empty()) + { + // if there's nothing under us, and we're blending 'onto', then we've finished + if (Color::is_onto(blend_method)) return true; + + // there's nothing under us, so using straight blending is + // faster than and equivalent to using composite, but we don't + // want to blank the surrounding areas + if (blend_method==Color::BLEND_COMPOSITE) blend_using_straight = true; + } + + if (!etl::intersect(context.get_full_bounding_rect(),(full_bounding_rect-focus)*exp(zoom)+origin+focus)) + { + // if there's no intersection between the context and our + // surface, and we're rendering 'onto', then we're done + if (Color::is_onto(blend_method) && !Color::is_straight(blend_method)) + return true; + + /* 'straight' is faster than 'composite' and has the same + * effect if the affected area of the lower layer is + * transparent; however, if we're not clipping the blit to + * just the bounding rectangle, the affected area is the whole + * tile, so we can't use this optimisation. if we are + * clipping, then we can use 'straight' to blit the clipped + * rectangle, but we shouldn't set blend_method to 'straight', + * or the surrounding areas will be blanked, which we don't + * want. + */ +#ifdef SYNFIG_CLIP_PASTECANVAS + if (blend_method==Color::BLEND_COMPOSITE) blend_using_straight = true; +#endif // SYNFIG_CLIP_PASTECANVAS + } + +#ifdef SYNFIG_CLIP_PASTECANVAS + Rect area(desc.get_rect() & full_bounding_rect); + + Point min(area.get_min()); + Point max(area.get_max()); + + if (desc.get_tl()[0] > desc.get_br()[0]) swap(min[0], max[0]); + if (desc.get_tl()[1] > desc.get_br()[1]) swap(min[1], max[1]); + + const int x(floor_to_int((min[0] - desc.get_tl()[0]) / desc.get_pw())); + const int y(floor_to_int((min[1] - desc.get_tl()[1]) / desc.get_ph())); + const int w( ceil_to_int((max[0] - desc.get_tl()[0]) / desc.get_pw()) - x); + const int h( ceil_to_int((max[1] - desc.get_tl()[1]) / desc.get_ph()) - y); + + const int tw = desc.get_w(); + const int th = desc.get_h(); + + desc.set_subwindow(x,y,w,h); + + // \todo this used to also have "area.area()<=0.000001 || " - is it useful? + // it was causing bug #1809480 (Zoom in beyond 8.75 in nested canvases fails) + if(desc.get_w()==0 || desc.get_h()==0) + { + if(cb && !cb->amount_complete(10000,10000)) return false; + return true; + } + + // SYNFIG_CLIP_PASTECANVAS is defined, so we are only touching the + // pixels within the affected rectangle. If the blend method is + // 'straight', then we need to blend transparent pixels with the + // clipped areas of this tile, because with the 'straight' blend + // method, even transparent pixels have an effect on the layers below + if (Color::is_straight(blend_method)) + { + Surface clearsurface; + + Surface::alpha_pen apen(surface->begin()); + apen.set_alpha(get_amount()); + + // the area we're about to blit is transparent, so it doesn't + // matter whether we use 'straight' or 'straight onto' here + if (blend_method == Color::BLEND_ALPHA_BRIGHTEN) + apen.set_blend_method(blend_method); + else + apen.set_blend_method(Color::BLEND_STRAIGHT); + + /* This represents the area we're pasting into the tile, + * within the tile as a whole. Areas (A), (B), (C) and (D) + * need blending with the underlying context if they're not + * zero-sized: + * + * 0 x x+w tw + * 0 +------------------------+ + * | | + * | (A) | + * | | + * y | - - +----------+ - - - | + * | | | | + * | (C) | w by h | (D) | + * | | | | + * y+h | - - +----------+ - - - | + * | | + * | (B) | + * | | + * tw +------------------------+ + */ + + if (y > 0) // draw the full-width strip above the rectangle (A) + { apen.move_to(0,0); clearsurface.set_wh(tw,y); clearsurface.clear(); clearsurface.blit_to(apen); } + if (y+h < th) // draw the full-width strip below the rectangle (B) + { apen.move_to(0,y+h); clearsurface.set_wh(tw,th-(y+h)); clearsurface.clear(); clearsurface.blit_to(apen); } + if (x > 0) // draw the box directly left of the rectangle (C) + { apen.move_to(0,y); clearsurface.set_wh(x,h); clearsurface.clear(); clearsurface.blit_to(apen); } + if (x+w < tw) // draw the box directly right of the rectangle (D) + { apen.move_to(x+w,y); clearsurface.set_wh(tw-(x+w),h); clearsurface.clear(); clearsurface.blit_to(apen); } + } +#endif // SYNFIG_CLIP_PASTECANVAS + + // render the canvas to be pasted onto pastesurface + Surface pastesurface; + if(!canvas->get_context().accelerated_render(&pastesurface,quality,desc,&stagetwo)) + return false; + +#ifdef SYNFIG_CLIP_PASTECANVAS + Surface::alpha_pen apen(surface->get_pen(x,y)); +#else // SYNFIG_CLIP_PASTECANVAS + Surface::alpha_pen apen(surface->begin()); +#endif // SYNFIG_CLIP_PASTECANVAS + + apen.set_alpha(get_amount()); + apen.set_blend_method(blend_using_straight ? Color::BLEND_STRAIGHT : blend_method); + pastesurface.blit_to(apen); + + if(cb && !cb->amount_complete(10000,10000)) return false; + + return true; +} + +Rect +Layer_PasteCanvas::get_bounding_rect()const +{ + return bounds; +} + +void Layer_PasteCanvas::get_times_vfunc(Node::time_set &set) const +{ + Node::time_set tset; + if(canvas) tset = canvas->get_times(); + + Node::time_set::iterator i = tset.begin(), end = tset.end(); + + //Make sure we offset the time... + //! \todo: SOMETHING STILL HAS TO BE DONE WITH THE OTHER DIRECTION + // (recursing down the tree needs to take this into account too...) + for(; i != end; ++i) + set.insert(*i +#ifdef ADJUST_WAYPOINTS_FOR_TIME_OFFSET // see node.h + - time_offset +#endif + ); + + Layer::get_times_vfunc(set); +}