psemek/libs/ui/source/default_element_factory.cpp

125 lines
2.6 KiB
C++

#include <psemek/ui/default_element_factory.hpp>
#include <psemek/ui/box_shape.hpp>
namespace psemek::ui
{
namespace
{
struct button_impl
: button
{
button_impl()
{
set_label(std::make_shared<struct label>());
label()->set_valign(label::valignment::center);
label()->set_halign(label::halignment::center);
label()->set_overflow(label::overflow_mode::drop);
label()->set_multiline(label::multiline_mode::none);
}
struct shape const & shape() const override
{
return shape_;
}
void reshape(geom::box<float, 2> const & bbox) override
{
shape_.box = bbox;
auto s = style();
if (s && label()) label()->reshape(geom::shrink(bbox, 1.f * (s->border_width + s->inner_margin)));
}
void draw(painter & p) const override
{
auto s = style();
if (!s) return;
if (s->shadow_offset != geom::vector{0, 0})
p.draw_rect(shape_.box + geom::cast<float>(s->shadow_offset), s->shadow_color);
if (s->border_width > 0)
p.draw_rect(shape_.box, s->border_color);
gfx::color_rgba color = s->fg_color;
if (state() == state_t::mouseover)
color = s->highlight_color;
else if (state() == state_t::mousedown)
color = s->action_color;
p.draw_rect(geom::shrink(shape_.box, 1.f * s->border_width), color);
}
geom::box<float, 2> size_constraints() const override
{
auto sc = element::size_constraints();
if (label())
sc = label()->size_constraints();
if (auto st = style())
{
float extra = 2.f * (st->border_width + st->inner_margin);
sc[0] += extra;
sc[1] += extra;
}
return sc;
}
private:
box_shape shape_;
};
}
struct default_element_factory::impl
{
std::shared_ptr<struct style> style;
impl();
template <typename T>
std::shared_ptr<T> create()
{
auto r = std::make_shared<T>();
r->set_style(style);
return r;
}
};
default_element_factory::impl::impl()
: style{std::make_shared<struct style>()}
{}
default_element_factory::default_element_factory()
: pimpl_{make_impl()}
{}
default_element_factory::~default_element_factory() = default;
void default_element_factory::set_style(std::shared_ptr<struct style> st)
{
impl().style = st;
}
std::shared_ptr<struct style> default_element_factory::style() const
{
return impl().style;
}
std::shared_ptr<button> default_element_factory::make_button(std::string text)
{
auto r = impl().create<button_impl>();
r->label()->set_text(std::move(text));
r->label()->set_style(impl().style);
return r;
}
std::shared_ptr<screen> default_element_factory::make_screen()
{
return std::make_shared<screen>();
}
}