Refactor clamped and rounded linear interpolation

AdaptiveBrightness/log_to_file.hpp

@@ -17,7 +17,7 @@ static inline void rotateLog(const std::filesystem::path& logFileName, int numRo
     const auto generateRotateNames = [&]() {
         std::vector<QString> rotateFileNames = {QString().fromStdString(logFileName.string())};
 
-        for(size_t i = 1; i < numRotatingLogs; ++i) {
+        for(int i = 1; i < numRotatingLogs; ++i) {
             auto rotateName = logFileName.stem();
             rotateName += std::string(".") + std::to_string(i);
             rotateName += logFileName.extension();

AdaptiveBrightness/main_window.cpp

@@ -123,8 +123,7 @@ void MainWindow::setupMonitorsTab()
             [this](int state) { m_ui.monitorOverallBrightnessSlider->setEnabled(state == Qt::CheckState::Checked); });
 
     connect(m_ui.monitorBrightnessSlider, &QSlider::valueChanged, [this](int value) {
-        const auto mappedBrightness = utils::map(value, 0, 100, 0.f, 1.f);
-        const auto newBrightness = std::clamp(mappedBrightness, 0.f, 1.f);
+        const auto newBrightness = utils::map(value, 0, 100, 0.f, 1.f);
         qDebug(ltr("Overriding brightness with %1").arg(newBrightness));
         m_brightness = newBrightness;
     });
@@ -183,9 +182,9 @@ void MainWindow::setupCallbackTimer()
 
 void MainWindow::updateCurrentMonitorGUI(int index)
 {
-    const auto brightness = std::clamp<int>(utils::map(m_monitors[index].brightness, 0.f, 1.f, 0, 100), 0, 100);
-    const auto minimum = std::clamp<int>(utils::map(m_monitors[index].minBrightness, 0.f, 1.f, 0, 100), 0, 100);
-    const auto maximum = std::clamp<int>(utils::map(m_monitors[index].maxBrightness, 0.f, 1.f, 0, 100), 0, 100);
+    const auto brightness = utils::map(m_monitors[index].brightness, 0.f, 1.f, 0, 100);
+    const auto minimum = utils::map(m_monitors[index].minBrightness, 0.f, 1.f, 0, 100);
+    const auto maximum = utils::map(m_monitors[index].maxBrightness, 0.f, 1.f, 0, 100);
 
     m_ui.monitorMinBrightnessSlider->setValue(minimum);
     m_ui.monitorMinBrightnessValueLabel->setText(QString("%1%").arg(minimum, 3, 10));
@@ -205,7 +204,6 @@ void MainWindow::updateState()
 
     bool sensorError = false;
     bool monitorError = false;
-    size_t iconBrightness = 0;
 
     const auto getAverageSensorValue = [this](float& brightness) {
         if(m_sensors.empty()) {
@@ -246,8 +244,7 @@ void MainWindow::updateState()
         sensorError = true;
     }
 
-    const auto roundedBrightness = std::round(utils::map(m_brightness, 0.f, 1.f, 0, 8));
-    iconBrightness = std::clamp<size_t>(roundedBrightness, 0, 8);
+    const auto iconBrightness = utils::map(m_brightness, 0.f, 1.f, size_t{0}, size_t{8});
 
     if(!setAllMonitorsBrightness(m_brightness)) {
         enumMonitors();

AdaptiveBrightness/monitor.hpp

@@ -57,6 +57,8 @@ class Monitor {
 
 #if defined(__clang__) || defined(__GNUC__)
 
+    #include <QString>
+
 class Monitor {
   public:
     Monitor();
@@ -64,6 +66,8 @@ class Monitor {
     bool setBrightness(float);
     float getBrightness();
 
+    QString getName() const;
+
     operator bool() const;
 
   private:

AdaptiveBrightness/monitor_linux.cpp

@@ -26,6 +26,12 @@ float Monitor::getBrightness()
     return NAN;
 }
 
+QString Monitor::getName() const
+{
+    qWarning(ltr("Getting monitor name not implemented"));
+    return "Unknown";
+}
+
 Monitor::operator bool() const
 {
     qWarning(ltr("Checking monitor validity not implemented"));

AdaptiveBrightness/monitor_win.cpp

@@ -64,8 +64,7 @@ bool Monitor::setBrightness(float percentage)
             return false;
     }
 
-    const auto mappedBrightness = utils::map(percentage, 0.f, 1.f, m_brightnessRange->first, m_brightnessRange->second);
-    const auto newBrightness = std::clamp<DWORD>(std::round(mappedBrightness), m_brightnessRange->first, m_brightnessRange->second);
+    const auto newBrightness = utils::map(percentage, 0.f, 1.f, m_brightnessRange->first, m_brightnessRange->second);
 
     if(!SetMonitorBrightness(m_physicalMonitor.handle, newBrightness)) {
         qCritical(ltr("Failed to set brightness of monitor '%1' with handle '0x%2' and physical handle '0x%3', error: %4")
@@ -110,7 +109,7 @@ float Monitor::getBrightness()
     m_brightnessRange = std::pair{minBrightness, maxBrightness};
     m_errorOccurred = false;
 
-    return std::clamp(utils::map(brightness, minBrightness, maxBrightness, 0.f, 1.f), 0.f, 1.f);
+    return utils::map(brightness, minBrightness, maxBrightness, 0.f, 1.f);
 }
 
 QString Monitor::getName() const

AdaptiveBrightness/sensor.cpp

@@ -47,8 +47,7 @@ std::vector<float> Sensor::readValues()
     std::vector<float> normalizedValues;
 
     for(const auto& value: values) {
-        const auto mappedValue = utils::map(value, m_range->first, m_range->second, 0.f, 1.f);
-        normalizedValues.push_back(std::clamp(mappedValue, 0.f, 1.f));
+        normalizedValues.push_back(utils::map(value, m_range->first, m_range->second, 0.f, 1.f));
     }
 
     return normalizedValues;

AdaptiveBrightness/utils.hpp

@@ -1,17 +1,30 @@
 #pragma once
 
+#include <algorithm>
 #include <array>
+#include <type_traits>
 
+#include <cmath>
 #include <cstddef>
 
 namespace utils {
 
 template<typename InType, typename OutType>
-auto map(InType value, InType inMin, InType inMax, OutType outMin, OutType outMax)
+auto interpolate(InType value, InType inMin, InType inMax, OutType outMin, OutType outMax)
 {
     return (value - inMin) * (outMax - outMin) / (inMax - inMin) + outMin;
 }
 
+template<typename InType, typename OutType>
+auto map(InType value, InType inMin, InType inMax, OutType outMin, OutType outMax)
+{
+    if constexpr(std::is_integral_v<OutType>) {
+        return std::clamp(static_cast<OutType>(std::round(interpolate(value, inMin, inMax, outMin, outMax))), outMin, outMax);
+    }
+
+    return std::clamp(static_cast<OutType>(interpolate(value, inMin, inMax, outMin, outMax)), outMin, outMax);
+}
+
 template<typename>
 struct array_size;
 

CMakeLists.txt

@@ -71,6 +71,12 @@ target_link_libraries(AdaptiveBrightness
                       Qt5::SerialPort
 )
 
+if(CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang|AppleClang")
+    target_link_libraries(AdaptiveBrightness
+                          stdc++fs
+    )
+endif()
+
 if(MSVC)
     target_link_libraries(AdaptiveBrightness
                           Dxva2.lib