Gui: Refactor navigation styles
Add new base class for state chart based navigation styles
This commit is contained in:
wmayer
233
src/Gui/Navigation/NavigationStateChart.cpp
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233
src/Gui/Navigation/NavigationStateChart.cpp
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// SPDX-License-Identifier: LGPL-2.1-or-later
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/***************************************************************************
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* Copyright (c) 2025 Werner Mayer <wmayer[at]users.sourceforge.net> *
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* *
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* This file is part of FreeCAD. *
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* *
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* FreeCAD is free software: you can redistribute it and/or modify it *
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* under the terms of the GNU Lesser General Public License as *
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* published by the Free Software Foundation, either version 2.1 of the *
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* License, or (at your option) any later version. *
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* *
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* FreeCAD is distributed in the hope that it will be useful, but *
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* WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
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* Lesser General Public License for more details. *
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* *
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* You should have received a copy of the GNU Lesser General Public *
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* License along with FreeCAD. If not, see *
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* <https://www.gnu.org/licenses/>. *
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* *
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**************************************************************************/
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#include "PreCompiled.h"
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#include <boost/statechart/custom_reaction.hpp>
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#include <boost/statechart/state_machine.hpp>
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#include <boost/statechart/state.hpp>
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#include "Camera.h"
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#include "NavigationStateChart.h"
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#include "View3DInventorViewer.h"
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using namespace Gui;
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namespace sc = boost::statechart;
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using NS = NavigationStateChart;
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NS::Event::Event() : flags(new Flags)
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{}
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bool NS::Event::isMouseButtonEvent() const
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{
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return this->inventor_event->isOfType(SoMouseButtonEvent::getClassTypeId());
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}
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const SoMouseButtonEvent* NS::Event::asMouseButtonEvent() const
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{
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return static_cast<const SoMouseButtonEvent*>(this->inventor_event);
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}
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bool NS::Event::isPress(Button button) const
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{
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return SoMouseButtonEvent::isButtonPressEvent(this->inventor_event, button);
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}
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bool NS::Event::isRelease(Button button) const
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{
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return SoMouseButtonEvent::isButtonReleaseEvent(this->inventor_event, button);
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}
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bool NS::Event::isKeyPress(Key key) const
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{
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return SoKeyboardEvent::isKeyPressEvent(this->inventor_event, key);
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}
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bool NS::Event::isKeyRelease(Key key) const
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{
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return SoKeyboardEvent::isKeyReleaseEvent(this->inventor_event, key);
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}
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bool NS::Event::isKeyboardEvent() const
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{
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return this->inventor_event->isOfType(SoKeyboardEvent::getClassTypeId());
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}
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const SoKeyboardEvent* NS::Event::asKeyboardEvent() const
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{
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return static_cast<const SoKeyboardEvent*>(this->inventor_event);
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}
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bool NS::Event::isLocation2Event() const
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{
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return this->inventor_event->isOfType(SoLocation2Event::getClassTypeId());
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}
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const SoLocation2Event* NS::Event::asLocation2Event() const
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{
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return static_cast<const SoLocation2Event*>(this->inventor_event);
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}
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bool NS::Event::isMotion3Event() const
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{
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return this->inventor_event->isOfType(SoMotion3Event::getClassTypeId());
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}
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const SoMotion3Event* NS::Event::asMotion3Event() const
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{
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return static_cast<const SoMotion3Event*>(this->inventor_event);
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}
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bool NS::Event::isDownButton(unsigned int state) const
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{
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return mbstate() == state;
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}
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bool NS::Event::isDownNoButton() const
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{
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return mbstate() == 0;
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}
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bool NS::Event::isDownButton1() const
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{
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return (mbstate() & BUTTON1DOWN) == BUTTON1DOWN;
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}
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bool NS::Event::isDownButton2() const
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{
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return (mbstate() & BUTTON2DOWN) == BUTTON2DOWN;
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}
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bool NS::Event::isDownButton3() const
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{
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return (mbstate() & BUTTON3DOWN) == BUTTON3DOWN;
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}
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bool NS::Event::isDownControl() const
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{
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return (kbstate() & CTRLDOWN) == CTRLDOWN;
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}
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bool NS::Event::isDownShift() const
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{
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return (kbstate() & SHIFTDOWN) == SHIFTDOWN;
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}
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bool NS::Event::isDownAlt() const
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{
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return (kbstate() & ALTDOWN) == ALTDOWN;
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}
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/* TRANSLATOR Gui::NavigationStateChart */
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TYPESYSTEM_SOURCE_ABSTRACT(Gui::NavigationStateChart, Gui::UserNavigationStyle)
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NavigationStateChart::NavigationStateChart()
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: naviMachine(new NS::StateMachine())
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{
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}
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NavigationStateChart::~NavigationStateChart()
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{
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naviMachine.reset();
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}
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SbBool NavigationStateChart::processSoEvent(const SoEvent * const ev)
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{
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// Events when in "ready-to-seek" mode are ignored, except those
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// which influence the seek mode itself -- these are handled further
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// up the inheritance hierarchy.
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if (this->isSeekMode()) {
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return inherited::processSoEvent(ev);
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}
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// Switch off viewing mode (Bug #0000911)
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if (!this->isSeekMode() && !this->isAnimating() && this->isViewing()) {
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this->setViewing(false); // by default disable viewing mode to render the scene
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}
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// Mismatches in state of the modifier keys happens if the user
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// presses or releases them outside the viewer window.
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syncModifierKeys(ev);
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// give the nodes in the foreground root the chance to handle events (e.g color bar)
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if (!viewer->isEditing()) {
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if (handleEventInForeground(ev)) {
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return true;
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}
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}
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NS::Event smev;
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smev.inventor_event = ev;
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// Spaceball/joystick handling
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if (ev->isOfType(SoMotion3Event::getClassTypeId())){
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smev.flags->processed = true;
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this->processMotionEvent(static_cast<const SoMotion3Event*>(ev));
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return true;
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}
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// Keyboard handling
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if (ev->isOfType(SoKeyboardEvent::getClassTypeId())) {
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const auto event = static_cast<const SoKeyboardEvent *>(ev);
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smev.flags->processed = processKeyboardEvent(event);
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}
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if (smev.isMouseButtonEvent()) {
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const auto button = smev.asMouseButtonEvent()->getButton();
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const SbBool press = smev.asMouseButtonEvent()->getState() == SoButtonEvent::DOWN;
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switch (button) {
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case SoMouseButtonEvent::BUTTON1:
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this->button1down = press;
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break;
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case SoMouseButtonEvent::BUTTON2:
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this->button2down = press;
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break;
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case SoMouseButtonEvent::BUTTON3:
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this->button3down = press;
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break;
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default:
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break;
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}
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}
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smev.modifiers =
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(this->button1down ? NS::Event::BUTTON1DOWN : 0) |
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(this->button2down ? NS::Event::BUTTON2DOWN : 0) |
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(this->button3down ? NS::Event::BUTTON3DOWN : 0) |
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(this->ctrldown ? NS::Event::CTRLDOWN : 0) |
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(this->shiftdown ? NS::Event::SHIFTDOWN : 0) |
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(this->altdown ? NS::Event::ALTDOWN : 0);
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if (!smev.flags->processed) {
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this->naviMachine->process_event(smev);
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}
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if (!smev.flags->propagated && !smev.flags->processed) {
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return inherited::processSoEvent(ev);
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}
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return smev.flags->processed;
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}
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