* Copyright 2018 Roman Gilg <subdiff@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 2 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "x11_libinput_dummydevice.h"
#include "libinput_settings.h"
#include <libinput-properties.h>
#include <X11/Xatom.h>
#include <X11/extensions/XInput2.h>
#include <X11/extensions/XInput.h>
static Atom s_touchpadAtom;
template<typename Callback>
static void XIForallPointerDevices(Display* dpy, const Callback& callback)
{
int ndevices_return;
XDeviceInfo *info = XListInputDevices(dpy, &ndevices_return);
if (!info) {
return;
}
for (int i = 0; i < ndevices_return; ++i) {
XDeviceInfo *dev = info + i;
if ((dev->use == IsXPointer || dev->use == IsXExtensionPointer) &&
dev->type != s_touchpadAtom) {
callback(dev);
}
}
XFreeDeviceList(info);
}
struct ScopedXDeleter {
static inline void cleanup(void* pointer)
{
if (pointer) {
XFree(pointer);
}
}
};
namespace {
template<typename T>
void valueWriterPart(T val, Atom valAtom, Display *dpy)
{
Q_UNUSED(val);
Q_UNUSED(valAtom);
Q_UNUSED(dpy);
}
template<>
void valueWriterPart<bool>(bool val, Atom valAtom, Display *dpy)
{
XIForallPointerDevices(dpy, [&] (XDeviceInfo *info) {
int deviceid = info->id;
Status status;
Atom type_return;
int format_return;
unsigned long num_items_return;
unsigned long bytes_after_return;
unsigned char *_data = nullptr;
status = XIGetProperty(dpy, deviceid, valAtom, 0, 1,
False, XA_INTEGER, &type_return, &format_return,
&num_items_return, &bytes_after_return, &_data);
if (status != Success) {
return;
}
QScopedArrayPointer<unsigned char, ScopedXDeleter> data(_data);
_data = nullptr;
if (type_return != XA_INTEGER || !data || format_return != 8) {
return;
}
unsigned char sendVal[2] = { 0 };
if (num_items_return == 1) {
sendVal[0] = val;
} else {
const Atom accel = XInternAtom(dpy, LIBINPUT_PROP_ACCEL_PROFILE_ENABLED, True);
if (num_items_return != 2 || valAtom != accel) {
return;
}
sendVal[val] = 1;
}
XIChangeProperty(dpy, deviceid, valAtom, XA_INTEGER,
8, XIPropModeReplace, sendVal, num_items_return);
});
}
template<>
void valueWriterPart<qreal>(qreal val, Atom valAtom, Display *dpy)
{
XIForallPointerDevices(dpy, [&] (XDeviceInfo *info) {
int deviceid = info->id;
Status status;
Atom float_type = XInternAtom (dpy, "FLOAT", False);
Atom type_return;
int format_return;
unsigned long num_items_return;
unsigned long bytes_after_return;
unsigned char *_data = nullptr;
status = XIGetProperty(dpy, deviceid, valAtom, 0, 1,
False, float_type, &type_return, &format_return,
&num_items_return, &bytes_after_return, &_data);
if (status != Success) {
return;
}
QScopedArrayPointer<unsigned char, ScopedXDeleter> data(_data);
_data = nullptr;
if (type_return != float_type || !data || format_return != 32 || num_items_return != 1) {
return;
}
unsigned char buffer[4096];
float *sendPtr = (float*)buffer;
*sendPtr = val;
XIChangeProperty(dpy, deviceid, valAtom, float_type,
format_return, XIPropModeReplace, buffer, 1);
});
}
}
X11LibinputDummyDevice::X11LibinputDummyDevice(QObject *parent, Display *dpy)
: QObject(parent),
m_settings(new LibinputSettings()),
m_dpy(dpy)
{
m_leftHanded.atom = XInternAtom(dpy, LIBINPUT_PROP_LEFT_HANDED, True);
m_middleEmulation.atom = XInternAtom(dpy, LIBINPUT_PROP_MIDDLE_EMULATION_ENABLED, True);
m_naturalScroll.atom = XInternAtom(dpy, LIBINPUT_PROP_NATURAL_SCROLL, True);
m_pointerAcceleration.atom = XInternAtom(dpy, LIBINPUT_PROP_ACCEL, True);
m_pointerAccelerationProfileFlat.atom = XInternAtom(dpy, LIBINPUT_PROP_ACCEL_PROFILE_ENABLED, True);
m_supportsDisableEvents.val = false;
m_enabled.val = true;
m_supportedButtons.val = Qt::LeftButton | Qt::MidButton | Qt::RightButton;
m_supportsLeftHanded.val = true;
m_supportsMiddleEmulation.val = true;
m_middleEmulationEnabledByDefault.val = false;
m_supportsPointerAcceleration.val = true;
m_defaultPointerAcceleration.val = 0;
m_supportsPointerAccelerationProfileAdaptive.val = true;
m_supportsPointerAccelerationProfileFlat.val = true;
m_defaultPointerAccelerationProfileAdaptive.val = true;
m_defaultPointerAccelerationProfileFlat.val = false;
m_supportsNaturalScroll.val = true;
m_naturalScrollEnabledByDefault.val = false;
s_touchpadAtom = XInternAtom(m_dpy, XI_TOUCHPAD, True);
}
X11LibinputDummyDevice::~X11LibinputDummyDevice()
{
delete m_settings;
}
bool X11LibinputDummyDevice::getConfig()
{
auto reset = [this](Prop<bool> &prop, bool defVal) {
prop.reset(m_settings->load(prop.cfgName, defVal));
};
reset(m_leftHanded, false);
reset(m_middleEmulation, false);
reset(m_naturalScroll, false);
reset(m_pointerAccelerationProfileFlat, false);
m_pointerAccelerationProfileAdaptive.reset(!m_settings->load(m_pointerAccelerationProfileFlat.cfgName, false));
m_pointerAcceleration.reset(m_settings->load(m_pointerAcceleration.cfgName, 0.));
return true;
}
bool X11LibinputDummyDevice::getDefaultConfig()
{
m_leftHanded.set(false);
m_pointerAcceleration.set(m_defaultPointerAcceleration);
m_pointerAccelerationProfileFlat.set(m_defaultPointerAccelerationProfileFlat);
m_pointerAccelerationProfileAdaptive.set(m_defaultPointerAccelerationProfileAdaptive);
m_middleEmulation.set(m_middleEmulationEnabledByDefault);
m_naturalScroll.set(m_naturalScrollEnabledByDefault);
return true;
}
bool X11LibinputDummyDevice::applyConfig()
{
valueWriter(m_leftHanded);
valueWriter(m_middleEmulation);
valueWriter(m_naturalScroll);
valueWriter(m_pointerAcceleration);
valueWriter(m_pointerAccelerationProfileFlat);
return true;
}
template<typename T>
bool X11LibinputDummyDevice::valueWriter(Prop<T> &prop)
{
if (prop.atom == None) {
return false;
}
if (prop.val != prop.old) {
m_settings->save(prop.cfgName, prop.val);
}
valueWriterPart(prop.val, prop.atom, m_dpy);
prop.old = prop.val;
return true;
}
bool X11LibinputDummyDevice::isChangedConfig() const
{
return m_leftHanded.changed() ||
m_pointerAcceleration.changed() ||
m_pointerAccelerationProfileFlat.changed() ||
m_pointerAccelerationProfileAdaptive.changed() ||
m_middleEmulation.changed() ||
m_naturalScroll.changed();
}
