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/***************************************************************************
* Copyright (c) 2025 Werner Mayer <wmayer[at]users.sourceforge.net> *
* *
* This file is part of FreeCAD. *
* *
* FreeCAD is free software: you can redistribute it and/or modify it *
* under the terms of the GNU Lesser General Public License as *
* published by the Free Software Foundation, either version 2.1 of the *
* License, or (at your option) any later version. *
* *
* FreeCAD is distributed in the hope that it will be useful, but *
* WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
* Lesser General Public License for more details. *
* *
* You should have received a copy of the GNU Lesser General Public *
* License along with FreeCAD. If not, see *
* <https://www.gnu.org/licenses/>. *
* *
**************************************************************************/
#ifndef GUI_NAVIGATIONSTATECHART_H
#define GUI_NAVIGATIONSTATECHART_H
#include <boost/statechart/event.hpp>
#include <Gui/Navigation/NavigationStyle.h>
// NOLINTBEGIN(cppcoreguidelines-avoid*, readability-avoid-const-params-in-decls)
namespace Gui
{
class NaviStateMachine;
class GuiExport NavigationStateChart: public UserNavigationStyle
{
using inherited = UserNavigationStyle;
TYPESYSTEM_HEADER_WITH_OVERRIDE();
public:
struct Event: public boost::statechart::event<Event>
{
using Button = SoMouseButtonEvent::Button;
using Key = SoKeyboardEvent::Key;
Event();
bool isMouseButtonEvent() const;
const SoMouseButtonEvent* asMouseButtonEvent() const;
bool isPress(Button button) const;
bool isRelease(Button button) const;
bool isKeyPress(Key key) const;
bool isKeyRelease(Key key) const;
bool isKeyboardEvent() const;
const SoKeyboardEvent* asKeyboardEvent() const;
bool isLocation2Event() const;
const SoLocation2Event* asLocation2Event() const;
bool isMotion3Event() const;
const SoMotion3Event* asMotion3Event() const;
bool isDownButton(unsigned int state) const;
bool isDownNoButton() const;
bool isDownButton1() const;
bool isDownButton2() const;
bool isDownButton3() const;
bool isDownControl() const;
bool isDownShift() const;
bool isDownAlt() const;
enum
{
// bits: 0-shift-ctrl-alt-0-lmb-mmb-rmb
BUTTON1DOWN = 0x00000100,
BUTTON2DOWN = 0x00000001,
BUTTON3DOWN = 0x00000010,
CTRLDOWN = 0x00100000,
SHIFTDOWN = 0x01000000,
ALTDOWN = 0x00010000,
MASKBUTTONS = BUTTON1DOWN | BUTTON2DOWN | BUTTON3DOWN,
MASKMODIFIERS = CTRLDOWN | SHIFTDOWN | ALTDOWN
};
const SoEvent* inventor_event {nullptr};
unsigned int modifiers {0};
unsigned int mbstate() const
{
return modifiers & MASKBUTTONS;
}
unsigned int kbstate() const
{
return modifiers & MASKMODIFIERS;
}
struct Flags
{
bool processed = false;
bool propagated = false;
};
std::shared_ptr<Flags> flags;
};
NavigationStateChart();
~NavigationStateChart() override;
protected:
SbBool processSoEvent(const SoEvent* const ev) override;
std::unique_ptr<NaviStateMachine> naviMachine; // NOLINT
};
class GuiExport NaviStateMachine
{
public:
NaviStateMachine(const NaviStateMachine&) = delete;
NaviStateMachine(NaviStateMachine&&) = delete;
NaviStateMachine& operator=(const NaviStateMachine&) = delete;
NaviStateMachine& operator=(NaviStateMachine&&) = delete;
NaviStateMachine() = default;
virtual ~NaviStateMachine() = default;
virtual void process_event(const NavigationStateChart::Event&) = 0;
};
template<typename T>
class NaviStateMachineT: public NaviStateMachine
{
public:
explicit NaviStateMachineT(T* t)
: object(t)
{
object->initiate();
}
~NaviStateMachineT() override
{
object.reset();
}
void process_event(const NavigationStateChart::Event& ev) override
{
object->process_event(ev);
}
private:
std::unique_ptr<T> object;
};
} // namespace Gui
// NOLINTEND(cppcoreguidelines-avoid*, readability-avoid-const-params-in-decls)
#endif // GUI_NAVIGATIONSTATECHART_H
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