internal: Support libhyprcursor (#5009)

woo

---------

Co-authored-by: Mihai Fufezan <fufexan@protonmail.com>

src/managers/CursorManager.hpp

@@ -0,0 +1,69 @@
+#pragma once
+
+#include <string>
+#include <hyprcursor/hyprcursor.hpp>
+#include <memory>
+#include "../includes.hpp"
+#include "../helpers/Vector2D.hpp"
+
+struct wlr_buffer;
+struct wlr_xcursor_manager;
+
+class CCursorManager {
+  public:
+    CCursorManager();
+
+    wlr_buffer*      getCursorBuffer();
+
+    void             setCursorFromName(const std::string& name);
+    void             setCursorSurface(wlr_surface* surf, const Vector2D& hotspot);
+
+    void             changeTheme(const std::string& name, const int size);
+    void             updateTheme();
+    SCursorImageData dataFor(const std::string& name); // for xwayland
+
+    void             tickAnimatedCursor();
+
+    class CCursorBuffer {
+      public:
+        CCursorBuffer(cairo_surface_t* surf, const Vector2D& size, const Vector2D& hotspot);
+        ~CCursorBuffer();
+
+        struct SCursorWlrBuffer {
+            wlr_buffer       base;
+            cairo_surface_t* surface = nullptr;
+            bool             dropped = false;
+            CCursorBuffer*   parent  = nullptr;
+        } wlrBuffer;
+
+      private:
+        Vector2D size;
+        Vector2D hotspot;
+
+        friend class CCursorManager;
+    };
+
+    void dropBufferRef(CCursorBuffer* ref);
+
+    bool m_bOurBufferConnected = false;
+
+  private:
+    std::vector<std::unique_ptr<CCursorBuffer>>     m_vCursorBuffers;
+
+    std::unique_ptr<Hyprcursor::CHyprcursorManager> m_pHyprcursor;
+
+    std::string                                     m_szTheme      = "";
+    int                                             m_iSize        = 24;
+    float                                           m_fCursorScale = 1.0;
+
+    Hyprcursor::SCursorStyleInfo                    m_sCurrentStyleInfo;
+
+    wl_event_source*                                m_pAnimationTimer        = nullptr;
+    int                                             m_iCurrentAnimationFrame = 0;
+    Hyprcursor::SCursorShapeData                    m_sCurrentCursorShapeData;
+
+    // xcursor fallback
+    wlr_xcursor_manager* m_pWLRXCursorMgr = nullptr;
+};
+
+inline std::unique_ptr<CCursorManager> g_pCursorManager;