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108 lines
2.8 KiB
Objective-C
108 lines
2.8 KiB
Objective-C
/*
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* This file is part of vimix - video live mixer
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*
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* **Copyright** (C) 2019-2023 Bruno Herbelin <bruno.herbelin@gmail.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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**/
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#ifndef TABLETINPUT_H
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#define TABLETINPUT_H
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#include <glm/glm.hpp>
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// Platform-specific forward declarations
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#ifdef LINUX
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// X11 forward declarations (for XInput2)
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typedef struct _XDisplay Display;
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#if defined(HAVE_LIBINPUT)
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struct libinput;
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struct udev;
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#endif
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#elif defined(APPLE)
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#ifdef __OBJC__
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@class NSEvent;
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#else
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class NSEvent;
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#endif
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#endif
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/**
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* @brief Cross-platform tablet/stylus input manager
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*
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* Provides normalized pressure values (0.0-1.0) from pen/stylus devices
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* across Linux (libinput) and macOS (NSEvent)
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*/
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class TabletInput {
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public:
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struct TabletData {
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float pressure; // 0.0 - 1.0
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bool has_pressure; // Stylius has pressure
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float tilt_x; // -1.0 to 1.0 (optional)
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float tilt_y; // -1.0 to 1.0 (optional)
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bool in_proximity; // Is stylus near/touching surface
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bool tip_down; // Is stylus tip pressed
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};
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static TabletInput& instance();
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// Initialize tablet input system
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bool init();
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// Poll for new tablet events (call once per frame)
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void pollEvents();
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// Clean up resources
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void terminate();
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// Get current tablet data
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const TabletData& getData() const { return data_; }
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// Quick accessors
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float getPressure() const { return data_.pressure; }
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bool isPressed() const { return data_.tip_down && data_.in_proximity; }
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// status
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bool isEnabled() const { return active_; }
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bool hasPressure() const { return isEnabled() && data_.has_pressure; }
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private:
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TabletInput();
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~TabletInput();
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TabletData data_;
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bool active_;
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#ifdef LINUX
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#if defined(HAVE_X11TABLETINPUT)
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// X11/XInput2 members (used when libinput is not available or in Flatpak)
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Display *display_;
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int xi_opcode_;
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int pressure_valuator_;
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int tilt_x_valuator_;
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int tilt_y_valuator_;
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#endif
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#if defined(HAVE_LIBINPUT)
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// libinput members (used for native builds with libinput)
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struct udev *udev_;
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struct libinput *li_;
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int fd_;
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#endif
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#elif defined(APPLE)
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void* monitor_; // Event monitor handle
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#endif
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};
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#endif // TABLETINPUT_H
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