Differential D14016 Diff 37485 kcms/touchpadx/src/backends/x11/propertyinfo.cpp

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kcms/touchpadx/src/backends/x11/propertyinfo.cpp

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		1		/*
		2		* Copyright (C) 2013 Alexander Mezin <mezin.alexander@gmail.com>
		3		*
		4		* This program is free software; you can redistribute it and/or modify
		5		* it under the terms of the GNU General Public License as published by
		6		* the Free Software Foundation; either version 2 of the License, or
		7		* (at your option) any later version.
		8		*
		9		* This program is distributed in the hope that it will be useful,
		10		* but WITHOUT ANY WARRANTY; without even the implied warranty of
		11		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		12		* GNU General Public License for more details.
		13		*
		14		* You should have received a copy of the GNU General Public License
		15		* along with this program; if not, write to the Free Software
		16		* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
		17		*/
		18
		19		#include "propertyinfo.h"
		20
		21		#include <QVariant>
		22
		23		#include <X11/Xlib.h>
		24		#include <X11/Xatom.h>
		25		#include <X11/extensions/XInput2.h>
		26
		27		void XDeleter(void* p)
		28		{
		29		if (p) {
		30		XFree(p);
		31		}
		32		}
		33
		34		PropertyInfo::PropertyInfo() :
		35		type(0), format(0), nitems(0), f(0), i(0), b(0),
		36		display(0), device(0), prop(0)
		37		{
		38		}
		39
		40		PropertyInfo::PropertyInfo(Display *display, int device, Atom prop, Atom floatType)
		41		: type(0), format(0), nitems(0), f(0), i(0), b(0),
		42		display(display), device(device), prop(prop)
		43		{
		44		unsigned char *dataPtr = 0;
		45		unsigned long bytes_after;
		46		XIGetProperty(display, device, prop, 0, 1000, False,
		47		AnyPropertyType, &type, &format, &nitems,
		48		&bytes_after, &dataPtr);
		49		data = QSharedPointer<unsigned char>(dataPtr, XDeleter);
		50
		51		if (format == CHAR_BIT && type == XA_INTEGER) {
		52		b = reinterpret_cast<char *>(dataPtr);
		53		}
		54		if (format == sizeof(int) * CHAR_BIT &&
		55		(type == XA_INTEGER \|\| type == XA_CARDINAL))
		56		{
		57		i = reinterpret_cast<int *>(dataPtr);
		58		}
		59		if (format == sizeof(float) * CHAR_BIT &&
		60		floatType && type == floatType)
		61		{
		62		f = reinterpret_cast<float *>(dataPtr);
		63		}
		64		}
		65
		66		QVariant PropertyInfo::value(unsigned offset) const
		67		{
		68		QVariant v;
		69		if (offset >= nitems) {
		70		return v;
		71		}
		72
		73		if (b) {
		74		v = QVariant(static_cast<int>(b[offset]));
		75		}
		76		if (i) {
		77		v = QVariant(i[offset]);
		78		}
		79		if (f) {
		80		v = QVariant(f[offset]);
		81		}
		82
		83		return v;
		84		}
		85
		86		void PropertyInfo::set()
		87		{
		88		XIChangeProperty(display, device, prop, type, format,
		89		XIPropModeReplace, data.data(), nitems);
		90		}