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reactos/reactos/dll/shellext/stobject/power.cpp
Shriraj Sawant 3c6def4711 [STOBJECT] 
-Documented the required functions and modules.
-Minor cleanup.

svn path=/branches/GSoC_2017/shellext/; revision=75690
2017-08-27 11:45:46 +00:00

422 lines
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C++
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/*
* PROJECT: ReactOS system libraries
* LICENSE: GPL - See COPYING in the top level directory
* FILE: dll/shellext/stobject/power.cpp
* PURPOSE: Power notification icon handler
* PROGRAMMERS: Eric Kohl <eric.kohl@reactos.org>
Shriraj Sawant a.k.a SR13 <sr.official@hotmail.com>
* David Quintana <gigaherz@gmail.com>
*/
#include <Windows.h>
#include <SetupAPI.h>
#include <devguid.h>
#include <BatClass.h>
#include "precomp.h"
#include "powrprof.h"
#include <mmsystem.h>
#include <mmddk.h>
#include <atlstr.h>
#define GBS_HASBATTERY 0x1
#define GBS_ONBATTERY 0x2
WINE_DEFAULT_DEBUG_CHANNEL(stobject);
int br_icons[5] = { IDI_BATTCAP0, IDI_BATTCAP1, IDI_BATTCAP2, IDI_BATTCAP3, IDI_BATTCAP4 }; // battery mode icons.
int bc_icons[5] = { IDI_BATTCHA0, IDI_BATTCHA1, IDI_BATTCHA2, IDI_BATTCHA3, IDI_BATTCHA4 }; // charging mode icons.
typedef struct _PWRSCHEMECONTEXT
{
HMENU hPopup;
UINT uiFirst;
UINT uiLast;
} PWRSCHEMECONTEXT, *PPWRSCHEMECONTEXT;
CString g_strTooltip;
static float g_batCap = 0;
static HICON g_hIconBattery = NULL;
static BOOL g_IsRunning = FALSE;
/*++
* @name GetBatteryState
*
* Enumerates the available battery devices and provides the remaining capacity.
*
* @param cap
* If no error occurs, then this will contain average remaining capacity.
* @param dwResult
* Helps in making battery type checks.
* {
* Returned value includes GBS_HASBATTERY if the system has a non-UPS battery,
* and GBS_ONBATTERY if the system is running on a battery.
* dwResult & GBS_ONBATTERY means we have not yet found AC power.
* dwResult & GBS_HASBATTERY means we have found a non-UPS battery.
* }
*
* @return The error code.
*
*--*/
static HRESULT GetBatteryState(float& cap, DWORD& dwResult)
{
cap = 0;
dwResult = GBS_ONBATTERY;
HDEVINFO hdev = SetupDiGetClassDevs(&GUID_DEVCLASS_BATTERY, 0, 0, DIGCF_PRESENT | DIGCF_DEVICEINTERFACE);
if (INVALID_HANDLE_VALUE == hdev)
return E_HANDLE;
// Limit search to 100 batteries max
for (int idev = 0, count = 0; idev < 100; idev++)
{
SP_DEVICE_INTERFACE_DATA did = { 0 };
did.cbSize = sizeof(did);
if (SetupDiEnumDeviceInterfaces(hdev, 0, &GUID_DEVCLASS_BATTERY, idev, &did))
{
DWORD cbRequired = 0;
SetupDiGetDeviceInterfaceDetail(hdev, &did, 0, 0, &cbRequired, 0);
if (ERROR_INSUFFICIENT_BUFFER == GetLastError())
{
PSP_DEVICE_INTERFACE_DETAIL_DATA pdidd = (PSP_DEVICE_INTERFACE_DETAIL_DATA)LocalAlloc(LPTR, cbRequired);
if (pdidd)
{
pdidd->cbSize = sizeof(*pdidd);
if (SetupDiGetDeviceInterfaceDetail(hdev, &did, pdidd, cbRequired, &cbRequired, 0))
{
// Enumerated a battery. Ask it for information.
HANDLE hBattery = CreateFile(pdidd->DevicePath, GENERIC_READ | GENERIC_WRITE,
FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if (INVALID_HANDLE_VALUE != hBattery)
{
// Ask the battery for its tag.
BATTERY_QUERY_INFORMATION bqi = { 0 };
DWORD dwWait = 0;
DWORD dwOut;
if (DeviceIoControl(hBattery, IOCTL_BATTERY_QUERY_TAG, &dwWait, sizeof(dwWait), &bqi.BatteryTag,
sizeof(bqi.BatteryTag), &dwOut, NULL) && bqi.BatteryTag)
{
// With the tag, you can query the battery info.
BATTERY_INFORMATION bi = { 0 };
bqi.InformationLevel = BatteryInformation;
if (DeviceIoControl(hBattery, IOCTL_BATTERY_QUERY_INFORMATION, &bqi, sizeof(bqi), &bi,
sizeof(bi), &dwOut, NULL))
{
// Only non-UPS system batteries count
if (bi.Capabilities & BATTERY_SYSTEM_BATTERY)
{
if (!(bi.Capabilities & BATTERY_IS_SHORT_TERM))
dwResult |= GBS_HASBATTERY;
// Query the battery status.
BATTERY_WAIT_STATUS bws = { 0 };
bws.BatteryTag = bqi.BatteryTag;
BATTERY_STATUS bs;
if (DeviceIoControl(hBattery, IOCTL_BATTERY_QUERY_STATUS, &bws, sizeof(bws),
&bs, sizeof(bs), &dwOut, NULL))
{
if (bs.PowerState & BATTERY_POWER_ON_LINE)
dwResult &= ~GBS_ONBATTERY;
// Take average of total capacity of batteries detected!
cap = cap*(count)+(float)bs.Capacity / bi.FullChargedCapacity * 100;
cap /= count + 1;
count++;
}
}
}
}
CloseHandle(hBattery);
}
}
LocalFree(pdidd);
}
}
}
else if (ERROR_NO_MORE_ITEMS == GetLastError())
{
break; // Enumeration failed - perhaps we're out of items
}
}
SetupDiDestroyDeviceInfoList(hdev);
// Final cleanup: If we didn't find a battery, then presume that we
// are on AC power.
if (!(dwResult & GBS_HASBATTERY))
dwResult &= ~GBS_ONBATTERY;
return S_OK;
}
/*++
* @name Quantize
*
* This function quantizes the mentioned quantity to nearest level.
*
* @param p
* Should be a quantity in percentage.
* @param lvl
* Quantization level (this excludes base level 0, which will always be present), default is 10.
*
* @return Nearest quantized level, can be directly used as array index based on context.
*
*--*/
static UINT Quantize(float p, UINT lvl = 10)
{
int i = 0;
float f, q = (float)100 / lvl, d = q / 2;
for (f = 0; f < p; f += q, i++);
if ((f - d) <= p)
return i;
else
return i - 1;
/*
@remarks This function uses centred/symmetric logic for quantization.
For the case of lvl = 4, You will get following integer levels if given (p) value falls in between the range partitions:
0 <= p < 12.5 : returns 0; (corresponding to 0% centre)
12.5 <= p < 37.5 : returns 1; (corresponding to 25% centre)
37.5 <= p < 62.5 : returns 2; (corresponding to 50% centre)
62.5 <= p < 87.5 : returns 3; (corresponding to 75% centre)
87.5 <= p <= 100 : returns 4; (corresponding to 100% centre)
*/
}
/*++
* @name DynamicLoadIcon
*
* Returns the respective icon as per the current battery capacity.
* It also does the work of setting global parameters of battery capacity and tooltips.
*
* @param hinst
* A handle to a instance of the module.
*
* @return The handle to respective battery icon.
*
*--*/
static HICON DynamicLoadIcon(HINSTANCE hinst)
{
HICON hBatIcon;
float cap = 0;
DWORD dw = 0;
UINT index = -1;
HRESULT hr = GetBatteryState(cap, dw);
if (!FAILED(hr) && (dw & GBS_HASBATTERY))
{
index = Quantize(cap, 4);
g_batCap = cap;
}
else
{
g_batCap = 0;
hBatIcon = LoadIcon(hinst, MAKEINTRESOURCE(IDI_BATTCAP_ERR));
g_strTooltip.LoadStringW(IDS_PWR_UNKNOWN_REMAINING);
return hBatIcon;
}
if (dw & GBS_ONBATTERY)
{
hBatIcon = LoadIcon(hinst, MAKEINTRESOURCE(br_icons[index]));
g_strTooltip.Format(IDS_PWR_PERCENT_REMAINING, cap);
}
else
{
hBatIcon = LoadIcon(hinst, MAKEINTRESOURCE(bc_icons[index]));
g_strTooltip.Format(IDS_PWR_CHARGING, cap);
}
return hBatIcon;
}
HRESULT STDMETHODCALLTYPE Power_Init(_In_ CSysTray * pSysTray)
{
TRACE("Power_Init\n");
g_hIconBattery = DynamicLoadIcon(g_hInstance);
g_IsRunning = TRUE;
return pSysTray->NotifyIcon(NIM_ADD, ID_ICON_POWER, g_hIconBattery, g_strTooltip);
}
HRESULT STDMETHODCALLTYPE Power_Update(_In_ CSysTray * pSysTray)
{
TRACE("Power_Update\n");
g_hIconBattery = DynamicLoadIcon(g_hInstance);
return pSysTray->NotifyIcon(NIM_MODIFY, ID_ICON_POWER, g_hIconBattery, g_strTooltip);
}
HRESULT STDMETHODCALLTYPE Power_Shutdown(_In_ CSysTray * pSysTray)
{
TRACE("Power_Shutdown\n");
g_IsRunning = FALSE;
return pSysTray->NotifyIcon(NIM_DELETE, ID_ICON_POWER, NULL, NULL);
}
static void _RunPower()
{
ShellExecuteW(NULL, NULL, L"powercfg.cpl", NULL, NULL, SW_SHOWNORMAL);
}
static void _ShowContextMenu(CSysTray * pSysTray)
{
CString strOpen((LPCSTR)IDS_PWR_PROPERTIES);
HMENU hPopup = CreatePopupMenu();
AppendMenuW(hPopup, MF_STRING, IDS_PWR_PROPERTIES, strOpen);
SetForegroundWindow(pSysTray->GetHWnd());
DWORD flags = TPM_RETURNCMD | TPM_NONOTIFY | TPM_RIGHTALIGN | TPM_BOTTOMALIGN;
POINT pt;
GetCursorPos(&pt);
DWORD id = TrackPopupMenuEx(hPopup, flags,
pt.x, pt.y,
pSysTray->GetHWnd(), NULL);
switch (id)
{
case IDS_PWR_PROPERTIES:
_RunPower();
break;
}
DestroyMenu(hPopup);
}
static
BOOLEAN
CALLBACK
PowerSchemesEnumProc(
UINT uiIndex,
DWORD dwName,
LPWSTR sName,
DWORD dwDesc,
LPWSTR sDesc,
PPOWER_POLICY pp,
LPARAM lParam)
{
PPWRSCHEMECONTEXT PowerSchemeContext = (PPWRSCHEMECONTEXT)lParam;
if (AppendMenuW(PowerSchemeContext->hPopup, MF_STRING, uiIndex + 1, sName))
{
if (PowerSchemeContext->uiFirst == 0)
PowerSchemeContext->uiFirst = uiIndex + 1;
PowerSchemeContext->uiLast = uiIndex + 1;
}
return TRUE;
}
static
VOID
ShowPowerSchemesPopupMenu(
CSysTray *pSysTray)
{
PWRSCHEMECONTEXT PowerSchemeContext = {NULL, 0, 0};
UINT uiActiveScheme;
DWORD id;
POINT pt;
PowerSchemeContext.hPopup = CreatePopupMenu();
EnumPwrSchemes(PowerSchemesEnumProc, (LPARAM)&PowerSchemeContext);
if (GetActivePwrScheme(&uiActiveScheme))
{
CheckMenuRadioItem(PowerSchemeContext.hPopup,
PowerSchemeContext.uiFirst,
PowerSchemeContext.uiLast,
uiActiveScheme + 1,
MF_BYCOMMAND);
}
SetForegroundWindow(pSysTray->GetHWnd());
GetCursorPos(&pt);
id = TrackPopupMenuEx(PowerSchemeContext.hPopup,
TPM_RETURNCMD | TPM_NONOTIFY | TPM_RIGHTALIGN | TPM_BOTTOMALIGN,
pt.x,
pt.y,
pSysTray->GetHWnd(),
NULL);
DestroyMenu(PowerSchemeContext.hPopup);
if (id != 0)
SetActivePwrScheme(id - 1, NULL, NULL);
}
HRESULT STDMETHODCALLTYPE Power_Message(_In_ CSysTray * pSysTray, UINT uMsg, WPARAM wParam, LPARAM lParam, LRESULT &lResult)
{
TRACE("Power_Message uMsg=%d, wParam=%x, lParam=%x\n", uMsg, wParam, lParam);
switch (uMsg)
{
case WM_USER + 220:
TRACE("Power_Message: WM_USER+220\n");
if (wParam == 1)
{
if (lParam == FALSE)
return Power_Init(pSysTray);
else
return Power_Shutdown(pSysTray);
}
return S_FALSE;
case WM_USER + 221:
TRACE("Power_Message: WM_USER+221\n");
if (wParam == 1)
{
lResult = (LRESULT)g_IsRunning;
return S_OK;
}
return S_FALSE;
case ID_ICON_POWER:
Power_Update(pSysTray);
switch (lParam)
{
case WM_LBUTTONDOWN:
break;
case WM_LBUTTONUP:
ShowPowerSchemesPopupMenu(pSysTray);
break;
case WM_LBUTTONDBLCLK:
_RunPower();
break;
case WM_RBUTTONDOWN:
break;
case WM_RBUTTONUP:
_ShowContextMenu(pSysTray);
break;
case WM_RBUTTONDBLCLK:
break;
case WM_MOUSEMOVE:
break;
}
return S_OK;
default:
TRACE("Power_Message received for unknown ID %d, ignoring.\n");
return S_FALSE;
}
return S_FALSE;
}
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