void cairo_context::add_image(double x, double y, image_rgba8 const& data, double opacity)
{
cairo_pattern pattern(data);
pattern.set_origin(x, y);
cairo_save(cairo_.get());
cairo_set_source(cairo_.get(), const_cast<cairo_pattern_t*>(pattern.pattern()));
cairo_paint_with_alpha(cairo_.get(), opacity);
cairo_restore(cairo_.get());
check_object_status_and_throw_exception(*this);
}
void cairo_context::glyph_path(unsigned long index, double x, double y)
{
cairo_glyph_t glyph;
glyph.index = index;
glyph.x = x;
glyph.y = y;
cairo_glyph_path(cairo_.get(), &glyph, 1);
check_object_status_and_throw_exception(*this);
}
void cairo_context::glyph_path(unsigned long index, pixel_position const &pos)
{
cairo_glyph_t glyph;
glyph.index = index;
glyph.x = pos.x;
glyph.y = pos.y;
cairo_glyph_path(cairo_.get(), &glyph, 1);
check_object_status_and_throw_exception(*this);
}
void cairo_context::set_line_cap(line_cap_e cap)
{
if (cap == BUTT_CAP)
cairo_set_line_cap(cairo_.get(), CAIRO_LINE_CAP_BUTT);
else if (cap == SQUARE_CAP)
cairo_set_line_cap(cairo_.get(), CAIRO_LINE_CAP_SQUARE);
else
cairo_set_line_cap(cairo_.get(), CAIRO_LINE_CAP_ROUND);
check_object_status_and_throw_exception(*this);
}
void cairo_context::line_to(double x, double y)
{
#if CAIRO_VERSION < CAIRO_VERSION_ENCODE(1, 6, 0)
if (x < -32767.0) x = -32767.0;
else if (x > 32767.0) x = 32767.0;
if (y < -32767.0) y = -32767.0;
else if (y > 32767.0) y = 32767.0;
#endif
cairo_line_to(cairo_.get(), x, y);
check_object_status_and_throw_exception(*this);
}
void cairo_context::set_dash(dash_array const& dashes, double scale_factor)
{
std::vector<double> d;
d.reserve(dashes.size() * 2);
for (auto const& dash : dashes)
{
d.emplace_back(dash.first * scale_factor);
d.emplace_back(dash.second * scale_factor);
}
cairo_set_dash(cairo_.get() , &d[0], static_cast<int>(d.size()), 0/*offset*/);
check_object_status_and_throw_exception(*this);
}
void cairo_context::set_line_join(line_join_e join)
{
if (join == MITER_JOIN)
cairo_set_line_join(cairo_.get(), CAIRO_LINE_JOIN_MITER);
else if (join == MITER_REVERT_JOIN)
cairo_set_line_join(cairo_.get(), CAIRO_LINE_JOIN_MITER);
else if (join == ROUND_JOIN)
cairo_set_line_join(cairo_.get(), CAIRO_LINE_JOIN_ROUND);
else
cairo_set_line_join(cairo_.get(), CAIRO_LINE_JOIN_BEVEL);
check_object_status_and_throw_exception(*this);
}
void cairo_context::set_dash(dash_array const &dashes, double scale_factor)
{
std::valarray<double> d(dashes.size() * 2);
dash_array::const_iterator itr = dashes.begin();
dash_array::const_iterator end = dashes.end();
int index = 0;
for (; itr != end; ++itr)
{
d[index++] = itr->first * scale_factor;
d[index++] = itr->second * scale_factor;
}
cairo_set_dash(cairo_.get() , &d[0], dashes.size(), 0/*offset*/);
check_object_status_and_throw_exception(*this);
}
void cairo_context::add_image(agg::trans_affine const& tr, image_rgba8 const& data, double opacity)
{
cairo_pattern pattern(data);
if (!tr.is_identity())
{
double m[6];
tr.store_to(m);
cairo_matrix_t cairo_matrix;
cairo_matrix_init(&cairo_matrix,m[0],m[1],m[2],m[3],m[4],m[5]);
cairo_matrix_invert(&cairo_matrix);
pattern.set_matrix(cairo_matrix);
}
cairo_save(cairo_.get());
cairo_set_source(cairo_.get(), const_cast<cairo_pattern_t*>(pattern.pattern()));
cairo_paint_with_alpha(cairo_.get(), opacity);
cairo_restore(cairo_.get());
check_object_status_and_throw_exception(*this);
}
void cairo_context::set_gradient(cairo_gradient const& pattern, const box2d<double> &bbox)
{
cairo_pattern_t * gradient = pattern.gradient();
double bx1=bbox.minx();
double by1=bbox.miny();
double bx2=bbox.maxx();
double by2=bbox.maxy();
if (pattern.units() != USER_SPACE_ON_USE)
{
if (pattern.units() == OBJECT_BOUNDING_BOX)
{
cairo_path_extents(cairo_.get(), &bx1, &by1, &bx2, &by2);
}
cairo_matrix_t cairo_matrix;
cairo_pattern_get_matrix(gradient, &cairo_matrix);
cairo_matrix_scale(&cairo_matrix,1.0/(bx2-bx1),1.0/(by2-by1));
cairo_matrix_translate(&cairo_matrix, -bx1,-by1);
cairo_pattern_set_matrix(gradient, &cairo_matrix);
}
cairo_set_source(cairo_.get(), const_cast<cairo_pattern_t*>(gradient));
check_object_status_and_throw_exception(*this);
}
void cairo_context::set_operator(composite_mode_e comp_op)
{
switch (comp_op)
{
case clear:
cairo_set_operator(cairo_.get(),CAIRO_OPERATOR_CLEAR);
break;
case src:
cairo_set_operator(cairo_.get(),CAIRO_OPERATOR_SOURCE);
break;
case dst:
cairo_set_operator(cairo_.get(),CAIRO_OPERATOR_DEST);
break;
case src_over:
cairo_set_operator(cairo_.get(),CAIRO_OPERATOR_OVER);
break;
case dst_over:
cairo_set_operator(cairo_.get(),CAIRO_OPERATOR_DEST_OVER);
break;
case src_in:
cairo_set_operator(cairo_.get(),CAIRO_OPERATOR_IN);
break;
case dst_in:
cairo_set_operator(cairo_.get(),CAIRO_OPERATOR_DEST_IN);
break;
case src_out:
cairo_set_operator(cairo_.get(),CAIRO_OPERATOR_OUT);
break;
case dst_out:
cairo_set_operator(cairo_.get(),CAIRO_OPERATOR_DEST_OUT);
break;
case src_atop:
cairo_set_operator(cairo_.get(),CAIRO_OPERATOR_ATOP);
break;
case dst_atop:
cairo_set_operator(cairo_.get(),CAIRO_OPERATOR_DEST_ATOP);
break;
case _xor:
cairo_set_operator(cairo_.get(),CAIRO_OPERATOR_XOR);
break;
case plus:
cairo_set_operator(cairo_.get(),CAIRO_OPERATOR_ADD);
break;
#if CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1, 10, 0)
case multiply:
cairo_set_operator(cairo_.get(), CAIRO_OPERATOR_MULTIPLY);
break;
case screen:
cairo_set_operator(cairo_.get(),CAIRO_OPERATOR_SCREEN);
break;
case overlay:
cairo_set_operator(cairo_.get(),CAIRO_OPERATOR_OVERLAY);
break;
case darken:
cairo_set_operator(cairo_.get(),CAIRO_OPERATOR_DARKEN);
break;
case lighten:
cairo_set_operator(cairo_.get(),CAIRO_OPERATOR_LIGHTEN);
break;
case color_dodge:
cairo_set_operator(cairo_.get(),CAIRO_OPERATOR_COLOR_DODGE);
break;
case color_burn:
cairo_set_operator(cairo_.get(),CAIRO_OPERATOR_COLOR_BURN);
break;
case hard_light:
cairo_set_operator(cairo_.get(),CAIRO_OPERATOR_HARD_LIGHT);
break;
case soft_light:
cairo_set_operator(cairo_.get(),CAIRO_OPERATOR_SOFT_LIGHT);
break;
case difference:
cairo_set_operator(cairo_.get(),CAIRO_OPERATOR_DIFFERENCE);
break;
case exclusion:
cairo_set_operator(cairo_.get(), CAIRO_OPERATOR_EXCLUSION);
break;
#else
case multiply:
case screen:
case overlay:
case darken:
case lighten:
case color_dodge:
case color_burn:
case hard_light:
case soft_light:
case difference:
case exclusion:
break;
#endif
case contrast:
case minus:
case invert:
case invert_rgb:
case grain_merge:
case grain_extract:
case hue:
case saturation:
case _color:
case _value:
case linear_dodge:
case linear_burn:
case divide:
//case colorize_alpha:
break;
}
//
check_object_status_and_throw_exception(*this);
}
void cairo_context::show_page()
{
cairo_show_page(cairo_.get());
check_object_status_and_throw_exception(*this);
}
void cairo_context::set_color(double r, double g, double b, double opacity)
{
// http://lists.cairographics.org/archives/cairo/2008-August/014759.html
cairo_set_source_rgba(cairo_.get(), r, g, b, opacity);
check_object_status_and_throw_exception(*this);
}
void cairo_context::pop_group()
{
cairo_pop_group_to_source(cairo_.get());
check_object_status_and_throw_exception(*this);
}
void cairo_context::clip()
{
cairo_clip(cairo_.get());
check_object_status_and_throw_exception(*this);
}
void cairo_context::restore()
{
cairo_restore(cairo_.get());
check_object_status_and_throw_exception(*this);
}
void cairo_context::set_miter_limit(double limit)
{
cairo_set_miter_limit(cairo_.get(), limit);
check_object_status_and_throw_exception(*this);
}
void cairo_context::transform(cairo_matrix_t const& matrix)
{
cairo_transform(cairo_.get(), &matrix);
check_object_status_and_throw_exception(*this);
}
void cairo_context::translate(double x, double y)
{
cairo_translate(cairo_.get(), x, y);
check_object_status_and_throw_exception(*this);
}
void cairo_context::set_line_width(double width)
{
cairo_set_line_width(cairo_.get(), width);
check_object_status_and_throw_exception(*this);
}
void cairo_context::set_font_matrix(cairo_matrix_t const& matrix)
{
cairo_set_font_matrix(cairo_.get(), &matrix);
check_object_status_and_throw_exception(*this);
}
void cairo_context::set_fill_rule(cairo_fill_rule_t fill_rule)
{
cairo_set_fill_rule(cairo_.get(),fill_rule);
check_object_status_and_throw_exception(*this);
}
void cairo_context::curve_to(double ct1_x, double ct1_y, double ct2_x, double ct2_y, double end_x, double end_y)
{
cairo_curve_to(cairo_.get(), ct1_x,ct1_y,ct2_x,ct2_y,end_x,end_y);
check_object_status_and_throw_exception(*this);
}
void cairo_context::set_pattern(cairo_pattern const& pattern)
{
cairo_set_source(cairo_.get(), pattern.pattern());
check_object_status_and_throw_exception(*this);
}
void cairo_context::paint(double opacity)
{
cairo_paint_with_alpha(cairo_.get(), opacity);
check_object_status_and_throw_exception(*this);
}
void cairo_context::rectangle(double x, double y, double w, double h)
{
cairo_rectangle(cairo_.get(), x, y, w, h);
check_object_status_and_throw_exception(*this);
}
