37 lines
1.1 KiB
C
37 lines
1.1 KiB
C
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#pragma once
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#include <cgv/base/group.h>
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#include <cgv/base/traverser.h>
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#include "event.h"
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#include "control.h"
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#include "lib_begin.h"
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namespace cgv {
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namespace gui {
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/// interface for all classes that want to receive events
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class CGV_API event_handler : public base::traverse_policy
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{
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protected:
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//std::vector<abst_control>
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public:
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/// default construction
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event_handler();
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/// grab the focus in all parent nodes
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bool grab_focus();
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/// overload and implement this method to handle events
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virtual bool handle(event& e) = 0;
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/// overload to stream help information to the given output stream
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virtual void stream_help(std::ostream& os) = 0;
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//! add a key control for the given property with the given options.
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/*! This should be called in classes derived from cgv::base::group and event_handler. The group argument should
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be the this pointer cast to cgv::base_group. If group is not given, a dynamic_cast is performed on the this
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pointer. */
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bool add_key_control(const std::string& property, const std::string& options, cgv::base::group_ptr group = cgv::base::group_ptr());
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};
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}
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}
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#include <cgv/config/lib_end.h>
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