[FancyZones] Rename ZoneWindowDrawing -> ZonesDrawing (#14464)

* [FancyZones] Rename ZoneWindowDrawing -> ZonesOverlay

* [FancyZones] Rename ZoneWindowDrawing -> ZonesOverlay in tools and docs

Co-authored-by: float4 <float4-unspecified-mail>

src/modules/fancyzones/FancyZonesLib/ZonesOverlay.h

@@ -0,0 +1,71 @@
+#pragma once
+
+#include <map>
+#include <vector>
+#include <wil\resource.h>
+#include <winrt/base.h>
+#include <d2d1.h>
+#include <dwrite.h>
+
+#include "util.h"
+#include "Zone.h"
+#include "ZoneSet.h"
+#include "FancyZones.h"
+#include "ZoneColors.h"
+
+class ZonesOverlay
+{
+    struct DrawableRect
+    {
+        D2D1_RECT_F rect;
+        D2D1_COLOR_F borderColor;
+        D2D1_COLOR_F fillColor;
+        D2D1_COLOR_F textColor;
+        ZoneIndex id;
+    };
+
+    struct AnimationInfo
+    {
+        std::chrono::steady_clock::time_point tStart;
+        bool autoHide;
+    };
+
+    enum struct RenderResult
+    {
+        Ok,
+        AnimationEnded,
+        Failed,
+    };
+
+    HWND m_window = nullptr;
+    RECT m_clientRect{};
+    ID2D1HwndRenderTarget* m_renderTarget = nullptr;
+    std::optional<AnimationInfo> m_animation;
+
+    std::mutex m_mutex;
+    std::vector<DrawableRect> m_sceneRects;
+
+    float GetAnimationAlpha();
+    static ID2D1Factory* GetD2DFactory();
+    static IDWriteFactory* GetWriteFactory();
+    static D2D1_COLOR_F ConvertColor(COLORREF color);
+    static D2D1_RECT_F ConvertRect(RECT rect);
+    RenderResult Render();
+    void RenderLoop();
+
+    std::atomic<bool> m_shouldRender = false;
+    std::atomic<bool> m_abortThread = false;
+    std::condition_variable m_cv;
+    std::thread m_renderThread;
+
+public:
+
+    ~ZonesOverlay();
+    ZonesOverlay(HWND window);
+    void Hide();
+    void Show();
+    void Flash();
+    void DrawActiveZoneSet(const IZoneSet::ZonesMap& zones,
+                           const ZoneIndexSet& highlightZones,
+                           const ZoneColors& colors);
+};