Ejemplos de DrawingContext::targetLogicalBounds en C++ (Cpp)

Ejemplo n.º 1

Archivo: drawing.cpp Proyecto: zanqi/inkscape

void
Drawing::render(DrawingContext &ct, Geom::IntRect const &area, unsigned flags)
{
    if (_root) {
        _root->render(ct, area, flags);
    }

    if (colorMode() == COLORMODE_GRAYSCALE) {
        // apply grayscale filter on top of everything
        cairo_surface_t *input = ct.rawTarget();
        cairo_surface_t *out = ink_cairo_surface_create_identical(input);
        ink_cairo_surface_filter(input, out, _grayscale_colormatrix);
        Geom::Point origin = ct.targetLogicalBounds().min();
        ct.setSource(out, origin[Geom::X], origin[Geom::Y]);
        ct.setOperator(CAIRO_OPERATOR_SOURCE);
        ct.paint();
        ct.setOperator(CAIRO_OPERATOR_OVER);
    
        cairo_surface_destroy(out);
    }
}