ADAM David Alan Martin
c368696cc2
I tried splitting up the sources to speed up some compiling... but it didn't help. I dunno that it's more readable this way. I'm checkpointing this just in case.
66 lines
1.1 KiB
C++
66 lines
1.1 KiB
C++
#include "backlight.h"
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#include <iostream>
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#include <fstream>
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#include <algorithm>
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#include "power_console.h"
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int
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getBacklightPercent( const std::filesystem::path &backlightPath )
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{
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std::ifstream i_max{ backlightPath / "max_brightness" };
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int max;
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i_max >> max;
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std::ifstream inf{ backlightPath / "brightness" };
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int in;
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inf >> in;
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return 100 * in / max;
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}
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std::filesystem::path getBacklightPath();
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namespace
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{
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void
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changeBrightness( int pct )
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{
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std::ifstream i_max{ getBacklightPath() / "max_brightness" };
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int max;
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i_max >> max;
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// Clamp to never hit 0 backlight or pass max.
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int adj= std::clamp( max * pct / 100, 1, max );
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std::cerr << "Adjustment computed: " << adj << std::endl;
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std::ofstream out{ getBacklightPath() / "brightness" };
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out << adj;
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}
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void
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increaseBrightness( int pct )
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{
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changeBrightness( pct );
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}
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void
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decreaseBrightness( int pct )
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{
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changeBrightness( -pct );
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}
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}
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void
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adjustBrightness( MouseWheelSlider *, void * )
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{
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const int amount= brightness->value();
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std::cerr << "Adjusting brightness by " << amount << std::endl;
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changeBrightness( amount );
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}
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