Added a debug overlay

src/debug/HyprDebugOverlay.hpp

@@ -0,0 +1,44 @@
+#pragma once
+
+#include "../defines.hpp"
+#include "../helpers/Monitor.hpp"
+#include "../render/Texture.hpp"
+#include <deque>
+#include <cairo/cairo.h>
+#include <unordered_map>
+
+class CHyprMonitorDebugOverlay {
+public:
+    int draw(int offset);
+
+    void renderData(SMonitor* pMonitor, float µs);
+    void frameData(SMonitor* pMonitor);
+
+private:
+    std::deque<float> m_dLastFrametimes;
+    std::deque<float> m_dLastRenderTimes;
+    std::chrono::high_resolution_clock::time_point m_tpLastFrame;
+    SMonitor* m_pMonitor = nullptr;
+    wlr_box m_wbLastDrawnBox;
+};
+
+class CHyprDebugOverlay {
+public:
+
+    void draw();
+    void renderData(SMonitor*, float µs);
+    void frameData(SMonitor*);
+
+private:
+
+    std::unordered_map<SMonitor*, CHyprMonitorDebugOverlay> m_mMonitorOverlays;
+
+    cairo_surface_t* m_pCairoSurface = nullptr;
+    cairo_t* m_pCairo = nullptr;
+
+    CTexture m_tTexture;
+
+    friend class CHyprMonitorDebugOverlay;
+};
+
+inline std::unique_ptr<CHyprDebugOverlay> g_pDebugOverlay;