Rearranged a little. The functionality shouldn't have changed.
[synfig.git] / synfig-core / trunk / src / synfig / layer_pastecanvas.cpp
index 5cd4c4f..b4b8538 100644 (file)
@@ -1,11 +1,12 @@
 /* === S Y N F I G ========================================================= */
 /*!    \file layer_pastecanvas.cpp
-**     \brief Template Header
+**     \brief Implementation of the "Paste Canvas" layer
 **
-**     $Id: layer_pastecanvas.cpp,v 1.3 2005/01/24 03:08:18 darco Exp $
+**     $Id$
 **
 **     \legal
 **     Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
+**     Copyright (c) 2007 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
@@ -52,8 +53,10 @@ using namespace synfig;
 
 #define MAX_DEPTH 10
 
+#define SYNFIG_CLIP_PASTECANVAS
+
 //#ifdef __APPLE__
-//#define SYNFIG_NO_CLIP
+//#undef SYNFIG_CLIP_PASTECANVAS
 //#endif
 
 /* === C L A S S E S ======================================================= */
@@ -69,11 +72,11 @@ public:
 /* === G L O B A L S ======================================================= */
 
 SYNFIG_LAYER_INIT(Layer_PasteCanvas);
-SYNFIG_LAYER_SET_NAME(Layer_PasteCanvas,"PasteCanvas");
-SYNFIG_LAYER_SET_LOCAL_NAME(Layer_PasteCanvas,_("Paste Canvas"));
-SYNFIG_LAYER_SET_CATEGORY(Layer_PasteCanvas,_("Default"));
+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: layer_pastecanvas.cpp,v 1.3 2005/01/24 03:08:18 darco Exp $");
+SYNFIG_LAYER_SET_CVS_ID(Layer_PasteCanvas,"$Id$");
 
 /* === M E T H O D S ======================================================= */
 
@@ -84,7 +87,7 @@ Layer_PasteCanvas::Layer_PasteCanvas():
        time_offset(0)
 {
        children_lock=false;
-       do_not_muck_with_time_=false;
+       muck_with_time_=true;
        curr_time=Time::begin();
 }
 
@@ -146,16 +149,32 @@ Layer_PasteCanvas::set_param(const String & param, const ValueBase &value)
 {
        IMPORT(origin);
 
-       if(param=="canvas" && value.same_as(Canvas::Handle()))
+       // IMPORT(canvas);
+       if(param=="canvas" && value.same_type_as(Canvas::Handle()))
        {
                set_sub_canvas(value.get(Canvas::Handle()));
                return true;
        }
 
-//     IMPORT(canvas);
+       //! \todo this introduces bug 1844764 if enabled; it was introduced in r954, but I can't see if it's useful
+#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(time_offset);
 
        return Layer_Composite::set_param(param,value);
 }
@@ -163,7 +182,7 @@ Layer_PasteCanvas::set_param(const String & param, const ValueBase &value)
 void
 Layer_PasteCanvas::set_sub_canvas(etl::handle<synfig::Canvas> x)
 {
-       if(canvas && !do_not_muck_with_time_)
+       if(canvas && muck_with_time_)
                remove_child(canvas.get());
 
        if(canvas && (canvas->is_inline() || !get_canvas() || get_canvas()->get_root()!=canvas->get_root()))
@@ -184,7 +203,7 @@ Layer_PasteCanvas::set_sub_canvas(etl::handle<synfig::Canvas> x)
        if(canvas)
                bounds=(canvas->get_context().get_full_bounding_rect()-canvas->rend_desc().get_focus())*exp(zoom)+origin+canvas->rend_desc().get_focus();
 
-       if(canvas && !do_not_muck_with_time_)
+       if(canvas && muck_with_time_)
                add_child(canvas.get());
 
        if(canvas && (canvas->is_inline() || !get_canvas() || get_canvas()->get_root()!=canvas->get_root()))
@@ -231,7 +250,7 @@ Layer_PasteCanvas::set_time(Context context, Time time)const
        context.set_time(time);
        if(canvas)
        {
-               canvas->set_time(time);
+               canvas->set_time(time+time_offset);
 
                bounds=(canvas->get_context().get_full_bounding_rect()-canvas->rend_desc().get_focus())*exp(zoom)+origin+canvas->rend_desc().get_focus();
        }
@@ -244,18 +263,19 @@ Layer_PasteCanvas::hit_check(synfig::Context context, const synfig::Point &pos)c
 {
        if(depth==MAX_DEPTH)return 0;depth_counter counter(depth);
 
-       Point target_pos=(pos-canvas->rend_desc().get_focus()-origin)/exp(zoom)+canvas->rend_desc().get_focus();
+       if (canvas) {
+               Point target_pos=(pos-canvas->rend_desc().get_focus()-origin)/exp(zoom)+canvas->rend_desc().get_focus();
 
-       if(canvas && get_amount() && canvas->get_context().get_color(target_pos).get_a()>=0.25)
-       {
-               if(!children_lock)
+               if(canvas && get_amount() && canvas->get_context().get_color(target_pos).get_a()>=0.25)
                {
-                       return canvas->get_context().hit_check(target_pos);
+                       if(!children_lock)
+                       {
+                               return canvas->get_context().hit_check(target_pos);
+                       }
+                       return const_cast<Layer_PasteCanvas*>(this);
                }
-               return const_cast<Layer_PasteCanvas*>(this);
        }
-       else
-               return context.hit_check(pos);
+       return context.hit_check(pos);
 }
 
 Color
@@ -278,21 +298,17 @@ Layer_PasteCanvas::accelerated_render(Context context,Surface *surface,int quali
        if(cb && !cb->amount_complete(0,10000)) return false;
 
        if(depth==MAX_DEPTH)
-       {
-               DEBUGPOINT();
                // 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);
 
-       if(!do_not_muck_with_time_ &&   curr_time!=Time::begin() && canvas->get_time()!=curr_time+time_offset)
-       {
+       if(muck_with_time_ && curr_time!=Time::begin() && canvas->get_time()!=curr_time+time_offset)
                canvas->set_time(curr_time+time_offset);
-       }
 
        SuperCallback stageone(cb,0,4500,10000);
        SuperCallback stagetwo(cb,4500,9000,10000);
@@ -305,90 +321,63 @@ Layer_PasteCanvas::accelerated_render(Context context,Surface *surface,int quali
        desc.set_br((desc.get_br()-canvas->rend_desc().get_focus()-origin)*zoomfactor+canvas->rend_desc().get_focus());
        desc.set_flags(RendDesc::PX_ASPECT);
 
-       if(is_solid_color() || context->empty())
+       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))
+       else if (!context.accelerated_render(surface,quality,renddesc,&stageone))
                return false;
-       Color::BlendMethod blend_method(get_blend_method());
 
+       Color::BlendMethod blend_method(get_blend_method());
        const Rect full_bounding_rect(canvas->get_context().get_full_bounding_rect());
 
-       if(context->empty())
-       {
-               if(Color::is_onto(blend_method))
-                       return true;
-
-               if(blend_method==Color::BLEND_COMPOSITE)
-                       blend_method=Color::BLEND_STRAIGHT;
-       }
-       else
-       if(!etl::intersect(context.get_full_bounding_rect(),full_bounding_rect+origin))
+       if(context->empty() ||
+          !etl::intersect(context.get_full_bounding_rect(),full_bounding_rect+origin))
        {
-               if(Color::is_onto(blend_method))
-                       return true;
-
-               if(blend_method==Color::BLEND_COMPOSITE)
-                       blend_method=Color::BLEND_STRAIGHT;
+               if (Color::is_onto(blend_method)) return true;
+               if (blend_method==Color::BLEND_COMPOSITE) blend_method=Color::BLEND_STRAIGHT;
        }
 
-#ifndef SYNFIG_NO_CLIP
-       {
-               //synfig::info("PasteCanv Clip");
-               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]);
+#ifdef SYNFIG_CLIP_PASTECANVAS
+       Rect area(desc.get_rect() & full_bounding_rect);
 
-               const int
-                       x(floor_to_int((min[0]-desc.get_tl()[0])/desc.get_pw())),
-                       y(floor_to_int((min[1]-desc.get_tl()[1])/desc.get_ph())),
-                       w(ceil_to_int((max[0]-desc.get_tl()[0])/desc.get_pw())-x),
-                       h(ceil_to_int((max[1]-desc.get_tl()[1])/desc.get_ph())-y);
-
-               desc.set_subwindow(x,y,w,h);
-
-               Surface pastesurface;
-
-               if(area.area()<=0.000001 || desc.get_w()==0 || desc.get_h()==0)
-               {
-                       if(cb && !cb->amount_complete(10000,10000)) return false;
-
-                       return true;
-               }
+       Point min(area.get_min());
+       Point max(area.get_max());
 
-               if(!canvas->get_context().accelerated_render(&pastesurface,quality,desc,&stagetwo))
-                       return false;
+       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]);
 
-               Surface::alpha_pen apen(surface->get_pen(x,y));
+       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);
 
-               apen.set_alpha(get_amount());
-               apen.set_blend_method(blend_method);
+       desc.set_subwindow(x,y,w,h);
 
-               pastesurface.blit_to(apen);
-       }
-#else
+       // \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)
        {
-               Surface pastesurface;
+               if(cb && !cb->amount_complete(10000,10000)) return false;
+               return true;
+       }
+#endif // SYNFIG_CLIP_PASTECANVAS
 
-               if(!canvas->get_context().accelerated_render(&pastesurface,quality,desc,&stagetwo))
-                       return false;
+       // render the canvas to be pasted onto pastesurface
+       Surface pastesurface;
+       if(!canvas->get_context().accelerated_render(&pastesurface,quality,desc,&stagetwo))
+               return false;
 
-               Surface::alpha_pen apen(surface->begin());
+#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_method);
-
-               pastesurface.blit_to(apen);
-       }
-#endif
+       apen.set_alpha(get_amount());
+       apen.set_blend_method(blend_method);
+       pastesurface.blit_to(apen);
 
        if(cb && !cb->amount_complete(10000,10000)) return false;
 
@@ -406,16 +395,17 @@ 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();
+       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...)
+       //! \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 + time_offset);
-       }
+               set.insert(*i
+#ifdef ADJUST_WAYPOINTS_FOR_TIME_OFFSET // see node.h
+                                  - time_offset
+#endif
+                       );
 
        Layer::get_times_vfunc(set);
 }