71 lines
1.2 KiB
C++
71 lines
1.2 KiB
C++
#include <psemek/ui/button.hpp>
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namespace psemek::ui
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{
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bool button::on_event(mouse_move const & e)
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{
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bool const over = shape().contains(geom::cast<float>(e.position));
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switch (state_) {
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case state_t::normal:
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if (over)
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{
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state_ = state_t::mouseover;
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on_state_changed(state_t::normal);
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return true;
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}
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break;
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case state_t::mouseover:
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case state_t::mousedown:
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if (!over)
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{
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auto old = state_;
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state_ = state_t::normal;
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on_state_changed(old);
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}
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break;
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}
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return false;
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}
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bool button::on_event(mouse_click const & e)
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{
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if (e.button != mouse_button::left) return false;
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switch (state_) {
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case state_t::normal:
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break;
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case state_t::mouseover:
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if (e.down)
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{
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state_ = state_t::mousedown;
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if (callback_)
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post(callback_);
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on_state_changed(state_t::mouseover);
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return true;
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}
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break;
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case state_t::mousedown:
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if (!e.down)
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{
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state_ = state_t::mouseover;
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on_state_changed(state_t::mousedown);
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return true;
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}
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break;
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}
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return false;
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}
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void button::on_state_changed(state_t old)
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{
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if (state() == state_t::mousedown || old == state_t::mousedown)
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{
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post_reshape();
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}
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}
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}
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