Hyprland/src/Compositor.hpp

#pragma once

#include <memory>
#include <deque>
#include <list>

#include "defines.hpp"
#include "debug/Log.hpp"
#include "events/Events.hpp"
#include "config/ConfigManager.hpp"
#include "managers/ThreadManager.hpp"
#include "managers/XWaylandManager.hpp"
#include "managers/input/InputManager.hpp"
#include "managers/LayoutManager.hpp"
#include "managers/KeybindManager.hpp"
#include "managers/AnimationManager.hpp"
#include "managers/EventManager.hpp"
#include "managers/ProtocolManager.hpp"
#include "managers/SessionLockManager.hpp"
#include "managers/HookSystemManager.hpp"
#include "debug/HyprDebugOverlay.hpp"
#include "debug/HyprNotificationOverlay.hpp"
#include "helpers/Monitor.hpp"
#include "helpers/Workspace.hpp"
#include "Window.hpp"
#include "render/Renderer.hpp"
#include "render/OpenGL.hpp"
#include "hyprerror/HyprError.hpp"
#include "plugins/PluginSystem.hpp"
#include "helpers/Watchdog.hpp"

enum eManagersInitStage {
    STAGE_PRIORITY = 0,
    STAGE_LATE
};

class CCompositor {
  public:
    CCompositor();
    ~CCompositor();

    // ------------------ WLR BASICS ------------------ //
    wl_display*                                m_sWLDisplay;
    wl_event_loop*                             m_sWLEventLoop;
    wlr_backend*                               m_sWLRBackend;
    wlr_session*                               m_sWLRSession;
    wlr_renderer*                              m_sWLRRenderer;
    wlr_allocator*                             m_sWLRAllocator;
    wlr_compositor*                            m_sWLRCompositor;
    wlr_subcompositor*                         m_sWLRSubCompositor;
    wlr_data_device_manager*                   m_sWLRDataDevMgr;
    wlr_drm*                                   m_sWRLDRM;
    wlr_drm_lease_v1_manager*                  m_sWRLDRMLeaseMgr;
    wlr_xdg_activation_v1*                     m_sWLRXDGActivation;
    wlr_output_layout*                         m_sWLROutputLayout;
    wlr_idle_notifier_v1*                      m_sWLRIdleNotifier;
    wlr_layer_shell_v1*                        m_sWLRLayerShell;
    wlr_xdg_shell*                             m_sWLRXDGShell;
    wlr_cursor*                                m_sWLRCursor;
    wlr_xcursor_manager*                       m_sWLRXCursorMgr;
    wlr_virtual_keyboard_manager_v1*           m_sWLRVKeyboardMgr;
    wlr_output_manager_v1*                     m_sWLROutputMgr;
    wlr_presentation*                          m_sWLRPresentation;
    wlr_keyboard_shortcuts_inhibit_manager_v1* m_sWLRKbShInhibitMgr;
    wlr_egl*                                   m_sWLREGL;
    int                                        m_iDRMFD;
    wlr_pointer_constraints_v1*                m_sWLRPointerConstraints;
    wlr_relative_pointer_manager_v1*           m_sWLRRelPointerMgr;
    wlr_server_decoration_manager*             m_sWLRServerDecoMgr;
    wlr_xdg_decoration_manager_v1*             m_sWLRXDGDecoMgr;
    wlr_virtual_pointer_manager_v1*            m_sWLRVirtPtrMgr;
    wlr_foreign_toplevel_manager_v1*           m_sWLRToplevelMgr;
    wlr_tablet_manager_v2*                     m_sWLRTabletManager;
    wlr_xdg_foreign_registry*                  m_sWLRForeignRegistry;
    wlr_idle_inhibit_manager_v1*               m_sWLRIdleInhibitMgr;
    wlr_pointer_gestures_v1*                   m_sWLRPointerGestures;
    wlr_output_power_manager_v1*               m_sWLROutputPowerMgr;
    wlr_input_method_manager_v2*               m_sWLRIMEMgr;
    wlr_text_input_manager_v3*                 m_sWLRTextInputMgr;
    wlr_xdg_activation_v1*                     m_sWLRActivation;
    wlr_linux_dmabuf_v1*                       m_sWLRLinuxDMABuf;
    wlr_backend*                               m_sWLRHeadlessBackend;
    wlr_session_lock_manager_v1*               m_sWLRSessionLockMgr;
    wlr_gamma_control_manager_v1*              m_sWLRGammaCtrlMgr;
    wlr_cursor_shape_manager_v1*               m_sWLRCursorShapeMgr;
    wlr_tearing_control_manager_v1*            m_sWLRTearingControlMgr;
    // ------------------------------------------------- //

    std::string                               m_szWLDisplaySocket   = "";
    std::string                               m_szInstanceSignature = "";
    std::string                               m_szCurrentSplash     = "error";

    std::vector<std::shared_ptr<CMonitor>>    m_vMonitors;
    std::vector<std::shared_ptr<CMonitor>>    m_vRealMonitors; // for all monitors, even those turned off
    std::vector<std::unique_ptr<CWindow>>     m_vWindows;
    std::vector<std::unique_ptr<SXDGPopup>>   m_vXDGPopups;
    std::vector<std::unique_ptr<CWorkspace>>  m_vWorkspaces;
    std::vector<std::unique_ptr<SSubsurface>> m_vSubsurfaces;
    std::vector<CWindow*>                     m_vWindowsFadingOut;
    std::vector<SLayerSurface*>               m_vSurfacesFadingOut;

    std::unordered_map<std::string, uint64_t> m_mMonitorIDMap;

    void                                      initServer();
    void                                      startCompositor();
    void                                      cleanup();
    void                                      createLockFile();
    void                                      removeLockFile();

    wlr_surface*                              m_pLastFocus   = nullptr;
    CWindow*                                  m_pLastWindow  = nullptr;
    CMonitor*                                 m_pLastMonitor = nullptr;

    std::vector<CWindow*>                     m_vWindowFocusHistory; // first element is the most recently focused.

    SSeat                                     m_sSeat;

    bool                                      m_bReadyToProcess = false;
    bool                                      m_bSessionActive  = true;
    bool                                      m_bDPMSStateON    = true;
    bool                                      m_bUnsafeState    = false;   // unsafe state is when there is no monitors.
    bool                                      m_bNextIsUnsafe   = false;   // because wlroots
    CMonitor*                                 m_pUnsafeOutput   = nullptr; // fallback output for the unsafe state
    bool                                      m_bIsShuttingDown = false;

    // ------------------------------------------------- //

    CMonitor*      getMonitorFromID(const int&);
    CMonitor*      getMonitorFromName(const std::string&);
    CMonitor*      getMonitorFromDesc(const std::string&);
    CMonitor*      getMonitorFromCursor();
    CMonitor*      getMonitorFromVector(const Vector2D&);
    void           removeWindowFromVectorSafe(CWindow*);
    void           focusWindow(CWindow*, wlr_surface* pSurface = nullptr);
    void           focusSurface(wlr_surface*, CWindow* pWindowOwner = nullptr);
    bool           windowExists(CWindow*);
    bool           windowValidMapped(CWindow*);
    CWindow*       vectorToWindowIdeal(const Vector2D&, CWindow* pIgnoreWindow = nullptr); // used only for finding a window to focus on, basically a "findFocusableWindow"
    CWindow*       vectorToWindowTiled(const Vector2D&);
    wlr_surface*   vectorToLayerSurface(const Vector2D&, std::vector<std::unique_ptr<SLayerSurface>>*, Vector2D*, SLayerSurface**);
    SIMEPopup*     vectorToIMEPopup(const Vector2D& pos, std::list<SIMEPopup>& popups);
    wlr_surface*   vectorWindowToSurface(const Vector2D&, CWindow*, Vector2D& sl);
    Vector2D       vectorToSurfaceLocal(const Vector2D&, CWindow*, wlr_surface*);
    CWindow*       windowFromCursor();
    CWindow*       windowFloatingFromCursor();
    CMonitor*      getMonitorFromOutput(wlr_output*);
    CWindow*       getWindowForPopup(wlr_xdg_popup*);
    CWindow*       getWindowFromSurface(wlr_surface*);
    CWindow*       getWindowFromHandle(uint32_t);
    CWindow*       getWindowFromZWLRHandle(wl_resource*);
    bool           isWorkspaceVisible(const int&);
    CWorkspace*    getWorkspaceByID(const int&);
    CWorkspace*    getWorkspaceByName(const std::string&);
    CWorkspace*    getWorkspaceByString(const std::string&);
    void           sanityCheckWorkspaces();
    void           updateWorkspaceWindowDecos(const int&);
    int            getWindowsOnWorkspace(const int&);
    CWindow*       getUrgentWindow();
    bool           hasUrgentWindowOnWorkspace(const int&);
    CWindow*       getFirstWindowOnWorkspace(const int&);
    CWindow*       getTopLeftWindowOnWorkspace(const int&);
    CWindow*       getFullscreenWindowOnWorkspace(const int&);
    bool           doesSeatAcceptInput(wlr_surface*);
    bool           isWindowActive(CWindow*);
    void           changeWindowZOrder(CWindow*, bool);
    void           cleanupFadingOut(const int& monid);
    CWindow*       getWindowInDirection(CWindow*, char);
    CWindow*       getNextWindowOnWorkspace(CWindow*, bool focusableOnly = false, std::optional<bool> floating = {});
    CWindow*       getPrevWindowOnWorkspace(CWindow*, bool focusableOnly = false, std::optional<bool> floating = {});
    int            getNextAvailableNamedWorkspace();
    bool           isPointOnAnyMonitor(const Vector2D&);
    CWindow*       getConstraintWindow(SMouse*);
    CMonitor*      getMonitorInDirection(const char&);
    void           updateAllWindowsAnimatedDecorationValues();
    void           updateWorkspaceWindows(const int64_t& id);
    void           updateWindowAnimatedDecorationValues(CWindow*);
    int            getNextAvailableMonitorID(std::string const& name);
    void           moveWorkspaceToMonitor(CWorkspace*, CMonitor*);
    void           swapActiveWorkspaces(CMonitor*, CMonitor*);
    CMonitor*      getMonitorFromString(const std::string&);
    bool           workspaceIDOutOfBounds(const int64_t&);
    void           setWindowFullscreen(CWindow*, bool, eFullscreenMode);
    void           updateFullscreenFadeOnWorkspace(CWorkspace*);
    CWindow*       getX11Parent(CWindow*);
    void           scheduleFrameForMonitor(CMonitor*);
    void           addToFadingOutSafe(SLayerSurface*);
    void           addToFadingOutSafe(CWindow*);
    CWindow*       getWindowByRegex(const std::string&);
    void           warpCursorTo(const Vector2D&, bool force = false);
    SLayerSurface* getLayerSurfaceFromWlr(wlr_layer_surface_v1*);
    SLayerSurface* getLayerSurfaceFromSurface(wlr_surface*);
    void           closeWindow(CWindow*);
    Vector2D       parseWindowVectorArgsRelative(const std::string&, const Vector2D&);
    void           forceReportSizesToWindowsOnWorkspace(const int&);
    bool           cursorOnReservedArea();
    CWorkspace*    createNewWorkspace(const int&, const int&, const std::string& name = ""); // will be deleted next frame if left empty and unfocused!
    void           renameWorkspace(const int&, const std::string& name = "");
    void           setActiveMonitor(CMonitor*);
    bool           isWorkspaceSpecial(const int&);
    int            getNewSpecialID();
    void           performUserChecks();
    void           moveWindowToWorkspaceSafe(CWindow* pWindow, CWorkspace* pWorkspace);
    CWindow*       getForceFocus();
    void           notifyIdleActivity();
    void           setIdleActivityInhibit(bool inhibit);
    void           arrangeMonitors();
    void           enterUnsafeState();
    void           leaveUnsafeState();
    void           setPreferredScaleForSurface(wlr_surface* pSurface, double scale);
    void           setPreferredTransformForSurface(wlr_surface* pSurface, wl_output_transform transform);
    void           updateSuspendedStates();

    std::string    explicitConfigPath;

  private:
    void     initAllSignals();
    void     setRandomSplash();
    void     initManagers(eManagersInitStage stage);
    void     prepareFallbackOutput();

    uint64_t m_iHyprlandPID = 0;
};

inline std::unique_ptr<CCompositor> g_pCompositor;

// For XWayland
inline std::map<std::string, xcb_atom_t> HYPRATOMS = {HYPRATOM("_NET_WM_WINDOW_TYPE"),
                                                      HYPRATOM("_NET_WM_WINDOW_TYPE_NORMAL"),
                                                      HYPRATOM("_NET_WM_WINDOW_TYPE_DOCK"),
                                                      HYPRATOM("_NET_WM_WINDOW_TYPE_DIALOG"),
                                                      HYPRATOM("_NET_WM_WINDOW_TYPE_UTILITY"),
                                                      HYPRATOM("_NET_WM_WINDOW_TYPE_TOOLBAR"),
                                                      HYPRATOM("_NET_WM_WINDOW_TYPE_SPLASH"),
                                                      HYPRATOM("_NET_WM_WINDOW_TYPE_MENU"),
                                                      HYPRATOM("_NET_WM_WINDOW_TYPE_DROPDOWN_MENU"),
                                                      HYPRATOM("_NET_WM_WINDOW_TYPE_POPUP_MENU"),
                                                      HYPRATOM("_NET_WM_WINDOW_TYPE_TOOLTIP"),
                                                      HYPRATOM("_NET_WM_WINDOW_TYPE_NOTIFICATION"),
                                                      HYPRATOM("_KDE_NET_WM_WINDOW_TYPE_OVERRIDE")};