PowerToys/src/modules/fancyzones/lib/MonitorWorkAreaHandler.h

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#pragma once
interface IZoneWindow;
namespace std
{
template<>
struct hash<GUID>
{
size_t operator()(const GUID& Value) const
{
RPC_STATUS status = RPC_S_OK;
return ::UuidHash(&const_cast<GUID&>(Value), &status);
}
};
}
class MonitorWorkAreaHandler
{
public:
/**
* Get work area based on virtual desktop id and monitor handle.
*
* @param[in] desktopId Virtual desktop identifier.
* @param[in] monitor Monitor handle.
*
* @returns Object representing single work area, interface to all actions available on work area
* (e.g. moving windows through zone layout specified for that work area).
*/
winrt::com_ptr<IZoneWindow> GetWorkArea(const GUID& desktopId, HMONITOR monitor);
/**
* Get work area on which specified window is located.
*
* @param[in] window Window handle.
*
* @returns Object representing single work area, interface to all actions available on work area
* (e.g. moving windows through zone layout specified for that work area).
*/
winrt::com_ptr<IZoneWindow> GetWorkArea(HWND window);
/**
* Get map of all work areas on single virtual desktop. Key in the map is monitor handle, while value
* represents single work area.
*
* @param[in] desktopId Virtual desktop identifier.
*
* @returns Map containing pairs of monitor and work area for that monitor (within same virtual desktop).
*/
const std::unordered_map<HMONITOR, winrt::com_ptr<IZoneWindow>>& GetWorkAreasByDesktopId(const GUID& desktopId);
/**
* @returns All registered work areas.
*/
std::vector<winrt::com_ptr<IZoneWindow>> GetAllWorkAreas();
/**
* Register new work area.
*
* @param[in] desktopId Virtual desktop identifier.
* @param[in] monitor Monitor handle.
* @param[in] workAra Object representing single work area.
*/
void AddWorkArea(const GUID& desktopId, HMONITOR monitor, winrt::com_ptr<IZoneWindow>& workArea);
/**
* Check if work area is already registered.
*
* @param[in] desktopId Virtual desktop identifier.
* @param[in] monitor Monitor handle.
*
* @returns Boolean indicating whether work area defined by virtual desktop id and monitor is already registered.
*/
bool IsNewWorkArea(const GUID& desktopId, HMONITOR monitor);
/**
* Register changes in current virtual desktop layout.
*
* @param[in] active Array of currently active virtual desktop identifiers.
*/
void RegisterUpdates(const std::vector<GUID>& active);
/**
* Clear all persisted work area related data.
*/
void Clear();
private:
// Work area is uniquely defined by monitor and virtual desktop id.
std::unordered_map<GUID, std::unordered_map<HMONITOR, winrt::com_ptr<IZoneWindow>>> workAreaMap;
};