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4bd1c799bd
There are a few exclusive operations for each type. Also we no longer need the freeWhenDone flag since the class now determines whether the surface should be freed or not.
79 lines
1.7 KiB
C++
79 lines
1.7 KiB
C++
#include "battery.h"
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#include "surfacecollection.h"
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#include <SDL.h>
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#include <cstdio>
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#include <sstream>
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/**
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* Reads the current battery state and returns a number representing its level
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* of charge.
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* @return A number representing battery charge: 0 means fully discharged,
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* 5 means fully charged, 6 represents running on external power.
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*/
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static unsigned short getBatteryLevel()
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{
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FILE *batteryHandle = NULL, *usbHandle = NULL;
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#if defined(PLATFORM_A320) || defined(PLATFORM_GCW0) || defined(PLATFORM_NANONOTE)
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usbHandle = fopen("/sys/class/power_supply/usb/online", "r");
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#endif
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if (usbHandle) {
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int usbval = 0;
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fscanf(usbHandle, "%d", &usbval);
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fclose(usbHandle);
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if (usbval == 1)
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return 6;
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}
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#if defined(PLATFORM_A320) || defined(PLATFORM_GCW0) || defined(PLATFORM_NANONOTE)
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batteryHandle = fopen("/sys/class/power_supply/battery/capacity", "r");
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#endif
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if (batteryHandle) {
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int battval = 0;
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fscanf(batteryHandle, "%d", &battval);
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fclose(batteryHandle);
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if (battval>90) return 5;
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if (battval>70) return 4;
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if (battval>50) return 3;
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if (battval>30) return 2;
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if (battval>10) return 1;
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}
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return 0;
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}
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Battery::Battery(SurfaceCollection& sc_)
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: sc(sc_)
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{
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lastUpdate = SDL_GetTicks();
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update();
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}
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OffscreenSurface const& Battery::getIcon()
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{
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// Check battery status every 60 seconds.
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unsigned int now = SDL_GetTicks();
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if (now - lastUpdate >= 60000) {
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lastUpdate = now;
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update();
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}
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return *sc.skinRes(iconPath);
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}
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void Battery::update()
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{
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unsigned short battlevel = getBatteryLevel();
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if (battlevel > 5) {
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iconPath = "imgs/battery/ac.png";
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} else {
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std::stringstream ss;
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ss << "imgs/battery/" << battlevel << ".png";
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ss >> iconPath;
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}
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}
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