124 lines
4.3 KiB
C++
124 lines
4.3 KiB
C++
// SPDX-License-Identifier: LGPL-2.1-or-later
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/***************************************************************************
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* Copyright (c) 2019 Victor Titov (DeepSOIC) <vv.titov@gmail.com> *
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* *
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* This file is part of the FreeCAD CAx development system. *
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* *
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* This library is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU Library General Public *
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* License as published by the Free Software Foundation; either *
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* version 2 of the License, or (at your option) any later version. *
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* *
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* This library is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU Library General Public License for more details. *
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* *
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* You should have received a copy of the GNU Library General Public *
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* License along with this library; see the file COPYING.LIB. If not, *
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* write to the Free Software Foundation, Inc., 59 Temple Place, *
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* Suite 330, Boston, MA 02111-1307, USA *
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* *
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***************************************************************************/
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#ifndef GESTURENAVIGATIONSTYLE2_H
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#define GESTURENAVIGATIONSTYLE2_H
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#include "Navigation/NavigationStyle.h"
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#include <queue>
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#include <memory>
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namespace Gui
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{
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class GestureNavigationStyle: public UserNavigationStyle
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{
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using superclass = UserNavigationStyle;
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TYPESYSTEM_HEADER_WITH_OVERRIDE();
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public:
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GestureNavigationStyle();
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~GestureNavigationStyle() override;
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const char* mouseButtons(ViewerMode) override;
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ClarifySelectionMode clarifySelectionMode() const override
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{
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return ClarifySelectionMode::Ctrl;
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}
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protected:
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SbBool processSoEvent(const SoEvent* const ev) override;
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public:
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/// calls processSoEvent of NavigationStyle.
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SbBool processSoEvent_bypass(const SoEvent* const ev);
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protected: // state machine classes
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/// State machine event, a wrapper around SoEvent
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class Event;
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class NaviMachine;
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class IdleState;
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/// when operating a dragger, for example
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class InteractState;
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/// button was pressed, but the cursor hasn't moved yet
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class AwaitingMoveState;
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/// when in a two-finger touchscreen gestures
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class GestureState;
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/// rotating the viewed model with mouse drag
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class RotateState;
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/// panning with mouse drag
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class PanState;
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/// panning triggered by tap-and-hold. It won't switch to Tilt and Rotate upon
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/// pressing/releasing mouse buttons
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class StickyPanState;
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/// tilting with mouse drag
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class TiltState;
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/// this state discards all mouse input (except detecting button roll gestures), until all
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/// buttons are released.
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class AwaitingReleaseState;
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class EventQueue: public std::queue<SoMouseButtonEvent>
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{
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public:
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EventQueue(GestureNavigationStyle& ns)
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: ns(ns)
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{}
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void post(const Event& ev);
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void discardAll();
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void forwardAll();
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public:
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GestureNavigationStyle& ns;
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};
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protected: // members variables
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std::unique_ptr<NaviMachine> naviMachine;
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EventQueue postponedEvents;
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// settings:
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/// if false, tilting with touchscreen gestures will be disabled
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bool enableGestureTilt = false;
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/// distance in px to treat as a definite drag (noise gate)
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int mouseMoveThreshold = 5;
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/// used by roll gesture detection logic, in AwaitingMoveState and AwaitingReleaseState.
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int rollDir = 0;
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bool logging = false;
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public:
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bool is2DViewing() const;
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public: // gesture reactions
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/// Roll gesture is like: press LMB, press RMB, release LMB, release RMB.
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/// This function is called by state machine whenever it picks up roll gesture.
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void onRollGesture(int direction);
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};
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} // namespace Gui
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#endif // GESTURENAVIGATIONSTYLE2_H
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