98 lines
1.8 KiB
C++
98 lines
1.8 KiB
C++
#include <psemek/ui/element.hpp>
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#include <psemek/util/recursive.hpp>
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#include <psemek/log/log.hpp>
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namespace psemek::ui
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{
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element * element::root()
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{
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element * r = this;
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while (r->parent()) r = r->parent();
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return r;
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}
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element const * element::root() const
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{
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element const * r = this;
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while (r->parent()) r = r->parent();
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return r;
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}
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async::executor * element::loop() const
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{
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element const * e = this;
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while (!e->loop_ && e->parent()) e = e->parent();
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return e->loop_;
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}
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void element::reshape()
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{
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reshape(shape().bbox());
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}
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geom::box<float, 2> element::size_constraints() const
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{
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static float const inf = std::numeric_limits<float>::infinity();
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return {{{0.f, inf}, {0.f, inf}}};
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}
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std::shared_ptr<style const> element::set_style(std::shared_ptr<struct style const> st)
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{
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std::swap(st, style_);
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auto visitor = util::recursive([](auto && self, element * e) -> void {
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e->merged_style_ = nullptr;
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for (auto c : e->children())
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if (c) self(c);
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});
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visitor(this);
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return st;
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}
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std::shared_ptr<struct style const> element::merged_style() const
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{
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if (!merged_style_)
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{
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if (!style_)
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{
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if (parent())
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merged_style_ = parent()->merged_style();
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else
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merged_style_ = std::make_shared<struct style>(default_style());
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}
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else
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{
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auto merged_style = std::make_shared<struct style>(*style_);
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if (parent())
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merge(*merged_style, *parent()->merged_style());
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else
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merge(*merged_style, default_style());
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merged_style_ = merged_style;
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}
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}
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return merged_style_;
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}
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void element::post(std::function<void()> f)
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{
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auto l = loop();
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if (l)
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l->post(std::move(f));
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}
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void element::post_reshape()
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{
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auto weak_self = weak_from_this();
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post([weak_self]{
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if (auto self = weak_self.lock())
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self->root()->reshape();
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});
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}
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}
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