128 lines
3.6 KiB
C++
128 lines
3.6 KiB
C++
|
/*
|
||
|
|
* Copyright (C) 2018 Tianjin KYLIN Information Technology Co., Ltd.
|
||
|
|
*
|
||
|
|
* 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, 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 <http://www.gnu.org/licenses/>.
|
||
|
|
*
|
||
|
|
**/
|
||
|
|
#include "monitorwatcher.h"
|
||
|
|
#include <QDir>
|
||
|
|
#include <QFile>
|
||
|
|
#include <QDebug>
|
||
|
|
#include <stdio.h>
|
||
|
|
|
||
|
|
#define DRM_DIR "/sys/class/drm/"
|
||
|
|
|
||
|
|
MonitorWatcher::MonitorWatcher(QObject *parent)
|
||
|
|
: QThread(parent),
|
||
|
|
virtualSize(0, 0),
|
||
|
|
monitorCount(0),
|
||
|
|
firstDetect(true)
|
||
|
|
{
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
MonitorWatcher::~MonitorWatcher()
|
||
|
|
{
|
||
|
|
requestInterruption();
|
||
|
|
terminate();
|
||
|
|
wait();
|
||
|
|
}
|
||
|
|
|
||
|
|
void MonitorWatcher::run()
|
||
|
|
{
|
||
|
|
QDir drmDir(DRM_DIR);
|
||
|
|
QStringList drms = drmDir.entryList(QDir::Dirs);
|
||
|
|
for(auto iter = drms.begin(); iter != drms.end(); ) {
|
||
|
|
if((*iter).indexOf("card") == 0 || iter->length() > 5)
|
||
|
|
iter++;
|
||
|
|
else
|
||
|
|
iter = drms.erase(iter);
|
||
|
|
}
|
||
|
|
|
||
|
|
FILE * fp = popen("xrandr", "r");
|
||
|
|
Q_UNUSED(fp)
|
||
|
|
|
||
|
|
/* 每隔3秒遍历一次显卡接口的连接状态 */
|
||
|
|
while(!isInterruptionRequested()) {
|
||
|
|
int width = 0;
|
||
|
|
int height = 0;
|
||
|
|
QMap<QString, QString> tmpStatus;
|
||
|
|
for(const QString & drm : drms) {
|
||
|
|
QFile drmStatusFile(DRM_DIR + drm + "/status");
|
||
|
|
if(drmStatusFile.open(QIODevice::ReadOnly | QIODevice::Text)) {
|
||
|
|
QTextStream in(&drmStatusFile);
|
||
|
|
QString status = in.readLine();
|
||
|
|
tmpStatus[drm] = status;
|
||
|
|
|
||
|
|
if(status == "connected") {
|
||
|
|
QSize maxMode = getMonitorMaxSize(drm);
|
||
|
|
width += maxMode.width();
|
||
|
|
height = height > maxMode.height() ? height : maxMode.height();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if(drmStatus != tmpStatus) {
|
||
|
|
drmStatus = tmpStatus;
|
||
|
|
int count = 0;
|
||
|
|
for(auto &pair : tmpStatus)
|
||
|
|
if(pair == "connected")
|
||
|
|
count++;
|
||
|
|
qDebug() << "monitor count changed ---" << count;
|
||
|
|
if(monitorCount != count) {
|
||
|
|
monitorCount = count;
|
||
|
|
if(!firstDetect) {
|
||
|
|
firstDetect = false;
|
||
|
|
Q_EMIT monitorCountChanged(count);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
FILE *fp = popen("xrandr", "r");
|
||
|
|
Q_UNUSED(fp)
|
||
|
|
}
|
||
|
|
|
||
|
|
virtualSize = QSize(width, height);
|
||
|
|
sleep(3);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 获取显示器的最大分辨率
|
||
|
|
*/
|
||
|
|
QSize MonitorWatcher::getMonitorMaxSize(const QString &drm)
|
||
|
|
{
|
||
|
|
int width = 0, height = 0;
|
||
|
|
QFile drmModeFile(DRM_DIR + drm + "/modes");
|
||
|
|
if(drmModeFile.open(QIODevice::ReadOnly | QIODevice::Text)) {
|
||
|
|
QTextStream in2(&drmModeFile);
|
||
|
|
QString maxMode = in2.readLine();
|
||
|
|
int xpos = maxMode.indexOf('x', 0);
|
||
|
|
width = maxMode.left(xpos).toInt();
|
||
|
|
int ipos = maxMode.indexOf('i', 0);
|
||
|
|
if(ipos != -1)
|
||
|
|
height = maxMode.mid(xpos+1, ipos-xpos-1).toInt();
|
||
|
|
else
|
||
|
|
height = maxMode.mid(xpos+1).toInt();
|
||
|
|
}
|
||
|
|
return QSize(width, height);
|
||
|
|
}
|
||
|
|
|
||
|
|
QSize MonitorWatcher::getVirtualSize()
|
||
|
|
{
|
||
|
|
return virtualSize;
|
||
|
|
}
|
||
|
|
|
||
|
|
int MonitorWatcher::getMonitorCount()
|
||
|
|
{
|
||
|
|
return monitorCount;
|
||
|
|
}
|