bool
LinearGradient::accelerated_cairorender(Context context, cairo_t *cr, int quality, const RendDesc &renddesc, ProgressCallback *cb)const
{
bool loop=param_loop.get(bool());
Point p1=param_p1.get(Point());
Point p2=param_p2.get(Point());
Gradient gradient=param_gradient.get(Gradient());
cairo_save(cr);
cairo_pattern_t* pattern=cairo_pattern_create_linear(p1[0], p1[1], p2[0], p2[1]);
bool cpoints_all_opaque=compile_gradient(pattern, gradient);
if(loop)
cairo_pattern_set_extend(pattern, CAIRO_EXTEND_REPEAT);
if(quality>8) cairo_pattern_set_filter(pattern, CAIRO_FILTER_FAST);
else if(quality>=4) cairo_pattern_set_filter(pattern, CAIRO_FILTER_GOOD);
else cairo_pattern_set_filter(pattern, CAIRO_FILTER_BEST);
if(
!
(is_solid_color() ||
(cpoints_all_opaque && get_blend_method()==Color::BLEND_COMPOSITE && get_amount()==1.f))
)
{
// Initially render what's behind us
if(!context.accelerated_cairorender(cr,quality,renddesc,cb))
{
if(cb)cb->error(strprintf(__FILE__"%d: Accelerated Cairo Renderer Failure",__LINE__));
return false;
}
}
cairo_set_source(cr, pattern);
cairo_paint_with_alpha_operator(cr, get_amount(), get_blend_method());
cairo_pattern_destroy(pattern); // Not needed more
cairo_restore(cr);
return true;
}
bool
CurveGradient::accelerated_cairorender(Context context, cairo_t *cr,int quality, const RendDesc &renddesc_, ProgressCallback *cb)const
{
RendDesc renddesc(renddesc_);
// Untransform the render desc
if(!cairo_renddesc_untransform(cr, renddesc))
return false;
Point pos;
const Real pw(renddesc.get_pw()),ph(renddesc.get_ph());
const Point tl(renddesc.get_tl());
const int w(renddesc.get_w());
const int h(renddesc.get_h());
SuperCallback supercb(cb,0,9500,10000);
if(get_amount()==1.0 && get_blend_method()==Color::BLEND_STRAIGHT)
{
cairo_save(cr);
cairo_set_operator(cr, CAIRO_OPERATOR_CLEAR);
cairo_paint(cr);
cairo_restore(cr);
}
else
{
if(!context.accelerated_cairorender(cr,quality,renddesc,&supercb))
return false;
if(get_amount()==0)
return true;
}
int x,y;
cairo_surface_t *surface;
surface=cairo_surface_create_similar(cairo_get_target(cr), CAIRO_CONTENT_COLOR_ALPHA, w, h);
CairoSurface csurface(surface);
if(!csurface.map_cairo_image())
{
synfig::warning("Curve Gradient: map cairo surface failed");
return false;
}
for(y=0,pos[1]=tl[1]; y<h; y++,pos[1]+=ph)
for(x=0,pos[0]=tl[0]; x<w; x++,pos[0]+=pw)
csurface[y][x]=CairoColor(color_func(pos,calc_supersample(pos,pw,ph))).premult_alpha();
csurface.unmap_cairo_image();
// paint surface on cr
cairo_save(cr);
cairo_translate(cr, tl[0], tl[1]);
cairo_scale(cr, pw, ph);
cairo_set_source_surface(cr, surface, 0, 0);
cairo_paint_with_alpha_operator(cr, get_amount(), get_blend_method());
cairo_restore(cr);
cairo_surface_destroy(surface);
// Mark our progress as finished
if(cb && !cb->amount_complete(10000,10000))
return false;
return true;
}
