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/*
* This file is part of vimix - video live mixer
*
* **Copyright** (C) 2019-2025 Bruno Herbelin <bruno.herbelin@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
**/
#ifdef APPLE
#include "TabletInput.h"
#include "Log.h"
#import <Cocoa/Cocoa.h>
TabletInput::TabletInput()
: data_({0.0f, false, 0.0f, 0.0f, false, false})
, active_(false)
, monitor_(nullptr)
{
}
TabletInput::~TabletInput()
{
terminate();
}
bool TabletInput::init()
{
// Create event monitor for tablet events
NSEventMask mask = NSEventMaskTabletPoint |
NSEventMaskTabletProximity |
NSEventMaskLeftMouseDown |
NSEventMaskLeftMouseUp |
NSEventMaskLeftMouseDragged;
// Capture reference to data_ for the block
TabletData *dataPtr = &data_;
id monitor = [NSEvent addLocalMonitorForEventsMatchingMask:mask
handler:^NSEvent *(NSEvent *event) {
// Check for tablet point events
if (event.type == NSEventTypeTabletPoint ||
(event.subtype == NSEventSubtypeTabletPoint)) {
dataPtr->has_pressure = true;
dataPtr->pressure = event.pressure;
dataPtr->tilt_x = event.tilt.x;
dataPtr->tilt_y = event.tilt.y;
dataPtr->tip_down = (event.pressure > 0.0f);
dataPtr->in_proximity = true;
}
// Handle proximity events
else if (event.type == NSEventTypeTabletProximity) {
dataPtr->in_proximity = event.isEnteringProximity;
if (!dataPtr->in_proximity) {
dataPtr->pressure = 0.0f;
dataPtr->tilt_x = 0.0f;
dataPtr->tilt_y = 0.0f;
dataPtr->tip_down = false;
}
}
// Fallback to regular mouse events if tablet is in proximity
else if (event.type == NSEventTypeLeftMouseDown) {
if (dataPtr->in_proximity && dataPtr->pressure == 0.0f) {
// Set minimal pressure if tablet is near but not reporting pressure
dataPtr->pressure = 0.1f;
dataPtr->tip_down = true;
}
}
else if (event.type == NSEventTypeLeftMouseUp) {
if (dataPtr->in_proximity) {
dataPtr->tip_down = false;
if (!dataPtr->in_proximity) {
dataPtr->pressure = 0.0f;
}
}
}
return event;
}];
monitor_ = (__bridge_retained void*)monitor;
active_ = true;
Log::Info("TabletInput: macOS tablet input initialized (NSEvent)");
return true;
}
void TabletInput::pollEvents()
{
// Events are handled automatically by the monitor callback
// Nothing to do here for macOS
}
void TabletInput::terminate()
{
if (monitor_) {
id monitor = (__bridge_transfer id)monitor_;
[NSEvent removeMonitor:monitor];
monitor_ = nullptr;
}
data_.pressure = 0.0f;
data_.tilt_x = 0.0f;
data_.tilt_y = 0.0f;
data_.in_proximity = false;
data_.tip_down = false;
active_ = false;
}
#endif // APPLE
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