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core
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Make brightness changes smoother

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pull/6/head
pjx206 4 years ago
parent 4175dec9b9
commit d3f30f8deb
4 changed files with 213 additions and 120 deletions
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2
screen-brightness/CMakeLists.txt
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@ -3,6 +3,8 @@ set(PROJECT_NAME cutefish-screen-brightness)
set(SRCS
main.cpp
brightnesshelper.h
brightnesshelper.cpp
)
add_executable(${PROJECT_NAME}

118
screen-brightness/brightnesshelper.cpp
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@ -0,0 +1,118 @@
/*
* Copyright (C) 2021 CutefishOS Team.
*
* Author: pjx <pjx206@163.com>
* rekols <rekols@foxmail.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
* 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 "brightnesshelper.h"
BrightnessHelper::BrightnessHelper(QObject *parent) : QObject(parent)
{
init();
anime.setEasingCurve(QEasingCurve::Linear);
connect(&anime, &QVariantAnimation::valueChanged, this,
[this](const QVariant &value){
if (QAbstractAnimation::Running == anime.state()) {
writeBrightness(value.toInt());
}
});
connect(&anime, &QVariantAnimation::finished, this, [this](){
qApp->quit();
});
}
BrightnessHelper::~BrightnessHelper(){
}
void BrightnessHelper::init()
{
const char kSysBrightnessDir[] = "/sys/class/backlight";
const char kMaxFile[] = "max_brightness";
const char kActualFile[] = "actual_brightness";
QDir sys(kSysBrightnessDir);
QStringList firmware, platform, raw;
QFile file;
QByteArray typeBuffer;
for (const QFileInfo &device: sys.entryInfoList(
QDir::Dirs | QDir::NoDotAndDotDot | QDir::Readable,
QDir::Name | QDir::Reversed)) {
const QString dev_path = device.filePath();
file.setFileName(dev_path + "/type");
if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) {
continue;
}
typeBuffer = file.readLine().trimmed();
if (typeBuffer == "firmware") {
firmware.append(dev_path);
} else if(typeBuffer == "platform") {
platform.append(dev_path);
} else if (typeBuffer == "raw") {
raw.append(dev_path);
} else {
qWarning() << "unsupported type in '"
<< file.fileName() << "' : " << QString(typeBuffer);
}
file.close();
}
if (!firmware.isEmpty())
name = firmware.constFirst();
else if (!platform.isEmpty())
name = platform.constFirst();
else if (!raw.isEmpty())
name = raw.constFirst();
actual = readFile(QDir(name).filePath(kActualFile)).toInt();
maxValue = readFile(QDir(name).filePath(kMaxFile)).toInt();
}
void BrightnessHelper::setBrightness(int value){
if (value <= 0)
value = 1;
if (value > 100)
value = 100;
anime.setDuration(200);
anime.setStartValue(actual);
const int end = static_cast<int>(value /100.0 * maxValue);
anime.setEndValue(end);
anime.start();
}
void BrightnessHelper::increaseBrightness() {
int value = static_cast<int>(actual / (double)maxValue * 100);
setBrightness(value + 20);
}
void BrightnessHelper::decreaseBrightness() {
int value = static_cast<int>(actual / (double)maxValue * 100);
setBrightness(value - 20);
}
void BrightnessHelper::writeBrightness(int brightness) {
if (brightness < 0)
brightness = 0;
if (brightness > maxValue)
brightness = maxValue;
QString dbg_s = QDir(name).filePath("brightness");
writeFile(QDir(name).filePath("brightness"), QString::number(brightness));
}

81
screen-brightness/brightnesshelper.h
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@ -0,0 +1,81 @@
/*
* Copyright (C) 2021 CutefishOS Team.
*
* Author: pjx <pjx206@163.com>
* rekols <rekols@foxmail.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
* 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/>.
*/
#ifndef BRIGHTNESSHELPER_H
#define BRIGHTNESSHELPER_H
#include <QDir>
#include <QList>
#include <QFile>
#include <QVariantAnimation>
#include <QCoreApplication>
#include <QDebug>
#include <QLockFile>
inline QString readFile(const QString &fileName)
{
QFile file(fileName);
if (file.open(QIODevice::ReadOnly)) {
QString data = QString::fromUtf8(file.readAll());
file.close();
return data;
}
return QString();
}
inline bool writeFile(const QString &fileName, const QString &data)
{
QFile file(fileName);
if (file.open(QIODevice::WriteOnly | QIODevice::Text)) {
QTextStream textStream(&file);
textStream << data;
textStream.flush();
file.close();
return true;
}
return false;
}
class BrightnessHelper : public QObject
{
Q_OBJECT
public:
explicit BrightnessHelper(QObject *parent = nullptr);
~BrightnessHelper();
void init();
void setBrightness(int value);
void increaseBrightness();
void decreaseBrightness();
int actual;
int maxValue;
QString name;
QVariantAnimation anime;
private:
void writeBrightness(int brightness);
};
#endif // BRIGHTNESSHELPER_H

132
screen-brightness/main.cpp
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@ -2,6 +2,7 @@
* Copyright (C) 2021 CutefishOS Team.
*
* Author: rekols <rekols@foxmail.com>
* pjx <pjx206@163.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
@ -17,120 +18,8 @@
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <QCoreApplication>
#include <QCommandLineParser>
#include <QDebug>
#include <QDir>
#include <QList>
#include <QFile>
inline QString readFile(const QString &fileName)
{
QFile file(fileName);
if (file.open(QIODevice::ReadOnly)) {
QString data = QString::fromUtf8(file.readAll());
file.close();
return data;
}
return QString();
}
inline bool writeFile(const QString &fileName, const QString &data)
{
QFile file(fileName);
if (file.open(QIODevice::WriteOnly | QIODevice::Text)) {
QTextStream textStream(&file);
textStream << data;
textStream.flush();
file.close();
return true;
}
return false;
}
class ScreenDevice
{
public:
void set(int value) {
if (value <= 0)
value = 1;
else if (value > 100)
value = 100;
const int brightness = static_cast<int>(value * maxValue * 0.01);
QString brightnessData = QString::number(brightness, 10);
const QString brightnessFile = QDir(name).filePath("brightness");
writeFile(brightnessFile, brightnessData);
}
int actual;
int maxValue;
QString name;
};
inline QList<ScreenDevice> getDeviceList()
{
const char kSysBrightnessDir[] = "/sys/class/backlight";
const char kMaxFile[] = "max_brightness";
const char kActualFile[] = "actual_brightness";
QList<ScreenDevice> list;
QDir sys(kSysBrightnessDir);
for (const QFileInfo &device : sys.entryInfoList(QDir::Dirs | QDir::NoDotAndDotDot)) {
const QString dev_path = device.filePath();
QDir dev(dev_path);
const QString max_brightness = readFile(dev.filePath(kMaxFile));
bool max_ok;
const int max = max_brightness.toInt(&max_ok, 10);
if (!max_ok) {
qWarning() << "Failed to read max brightness:" << dev_path;
continue;
}
const QString actual_brightness = readFile(dev.filePath(kActualFile));
bool actual_ok;
const int actual = actual_brightness.toInt(&actual_ok, 10);
if (!actual_ok) {
qWarning() << "Failed to read actual brightness:" << dev_path;
continue;
}
ScreenDevice screen;
screen.actual = actual;
screen.maxValue = max;
screen.name = dev_path;
list << screen;
}
return list;
}
inline void setBrightness(int value)
{
for (ScreenDevice &device : getDeviceList()) {
device.set(value);
}
}
inline void increaseBrightness()
{
for (ScreenDevice &device : getDeviceList()) {
int value = static_cast<int>(device.actual * 100.0 / device.maxValue);
device.set(value + 20);
}
}
inline void decreaseBrightness()
{
for (ScreenDevice &device : getDeviceList()) {
int value = static_cast<int>(device.actual * 100.0 / device.maxValue);
device.set(value - 20);
}
}
#include "brightnesshelper.h"
int main(int argc, char *argv[])
{
@ -151,14 +40,17 @@ int main(int argc, char *argv[])
parser.process(app);
if (parser.isSet(setOption)) {
BrightnessHelper *brightnessHelper = new BrightnessHelper();
if (parser.isSet(setOption))
{
int value = parser.positionalArguments().value(0).toInt();
setBrightness(value);
} else if (parser.isSet(increaseOption)){
increaseBrightness();
} else if (parser.isSet(decreaseOption)) {
decreaseBrightness();
brightnessHelper->setBrightness(value);
}
else if (parser.isSet(increaseOption))
brightnessHelper->increaseBrightness();
else if (parser.isSet(decreaseOption))
brightnessHelper->decreaseBrightness();
return 0;
app.exec();
}

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