/* === P R O C E D U R E S ================================================= */
/* === M E T H O D S ======================================================= */
+Layer_Composite::Layer_Composite(float a, Color::BlendMethod bm):
+ amount (a),
+ blend_method (bm),
+ converted_blend_ (false),
+ transparent_color_ (false)
+ {
+ Layer::Vocab voc(get_param_vocab());
+ Layer::fill_static(voc);
+ }
bool
Layer_Composite::accelerated_render(Context context,Surface *surface,int quality, const RendDesc &renddesc_, ProgressCallback *cb) const
{
RendDesc renddesc(renddesc_);
- if(!amount_)
+ if(!amount)
return context.accelerated_render(surface,quality,renddesc,cb);
CanvasBase image;
image.push_back(0); // Alpha black
- // Render the backdrop
+ // Render the backdrop on the surface layer's surface.
if(!context.accelerated_render(&surfacelayer->surface,quality,renddesc,&stageone))
return false;
-
+ // Sets up the interpolation of the context (now the surface layer is the first one)
+ // depending on the quality
if(quality<=4)surfacelayer->c=3;else
if(quality<=5)surfacelayer->c=2;
else if(quality<=6)surfacelayer->c=1;
else surfacelayer->c=0;
surfacelayer->tl=renddesc.get_tl();
surfacelayer->br=renddesc.get_br();
+ // Sets the blend method to straight. See below
surfacelayer->set_blend_method(Color::BLEND_STRAIGHT);
-
+ // Push this layer on the image. The blending result is only this layer
+ // adn the surface layer. The rest of the context is ignored by the straight
+ // blend method of surface layer
image.push_front(const_cast<synfig::Layer_Composite*>(this));
// Set up a surface target
Layer::Vocab
Layer_Composite::get_param_vocab()const
{
+ //! First fills the returning vocabulary with the ancestor class
Layer::Vocab ret(Layer::get_param_vocab());
-
- ret.push_back(ParamDesc(amount_,"amount")
+ //! Now inserts the two parameters that this layer knows.
+ ret.push_back(ParamDesc(amount,"amount")
.set_local_name(_("Amount"))
);
- ret.push_back(ParamDesc(blend_method_,"blend_method")
+ ret.push_back(ParamDesc(blend_method,"blend_method")
.set_local_name(_("Blend Method"))
);
bool
Layer_Composite::set_param(const String & param, const ValueBase &value)
{
- if(param=="amount" && value.same_type_as(amount_))
- amount_=value.get(amount_);
+ if(param=="amount" && value.same_type_as(amount))
+ {
+ amount=value.get(amount);
+ set_param_static(param,value.get_static());
+ }
else
if(param=="blend_method" && value.same_type_as(int()))
{
- blend_method_ = static_cast<Color::BlendMethod>(value.get(int()));
+ blend_method = static_cast<Color::BlendMethod>(value.get(int()));
+ set_param_static(param,value.get_static());
- if (blend_method_ < 0 || blend_method_ >= Color::BLEND_END)
+ if (blend_method < 0 || blend_method >= Color::BLEND_END)
{
- warning("illegal value (%d) for blend_method - using Composite instead", blend_method_);
- blend_method_ = Color::BLEND_COMPOSITE;
+ warning("illegal value (%d) for blend_method - using Composite instead", blend_method);
+ blend_method = Color::BLEND_COMPOSITE;
return false;
}
- if (blend_method_ == Color::BLEND_STRAIGHT && !reads_context())
+ if (blend_method == Color::BLEND_STRAIGHT && !reads_context())
{
Canvas::Handle canvas(get_canvas());
if (canvas)
version.c_str(), get_non_empty_description().c_str());
else
{
- blend_method_ = Color::BLEND_COMPOSITE;
+ blend_method = Color::BLEND_COMPOSITE;
converted_blend_ = true;
// if this layer has a transparent color, go back and set the color again
ValueBase
Layer_Composite::get_param(const String & param)const
{
+
+ //! First check if the parameter's string is known.
if(param=="amount")
- return get_amount();
+ {
+ synfig::ValueBase ret(get_amount());
+ ret.set_static(get_param_static(param));
+ return ret;
+ }
if(param=="blend_method")
- return static_cast<int>(get_blend_method());
+ {
+ synfig::ValueBase ret(static_cast<int>(get_blend_method()));
+ ret.set_static(get_param_static(param));
+ return ret;
+ }
+ //! If it is unknown then call the ancestor's get param member
+ //! to see if it can handle that parameter's string.
return Layer::get_param(param);
}