Initial commit

arm9/source/gui/GraphicsContext.h

@@ -0,0 +1,67 @@
+#pragma once
+#include "core/math/Point.h"
+#include "core/math/Rectangle.h"
+#include "OamManager.h"
+#include "PaletteManager.h"
+#include "Rgb6Palette.h"
+
+class GraphicsContext
+{
+public:
+    GraphicsContext(OamManager* oamManager, PaletteManager* paletteManager, const Rgb6Palette* rgb6Palette)
+        : _priority(3), _polygonId(0), _oamManager(oamManager)
+        , _paletteManager(paletteManager), _rgb6Palette(rgb6Palette)
+        , _clipArea(0, 0, 256, 192) { }
+
+    u32 SetPriority(u32 priority)
+    {
+        u32 oldPriority = _priority;
+        _priority = priority;
+        return oldPriority;
+    }
+
+    constexpr u32 GetPriority() const { return _priority; }
+
+    u32 SetPolygonId(u32 polygonId)
+    {
+        u32 oldPolygonId = _polygonId;
+        _polygonId = polygonId;
+        return oldPolygonId;
+    }
+
+    constexpr u32 GetPolygonId() const { return _polygonId; }
+
+    OamManager& GetOamManager() const { return *_oamManager; }
+    PaletteManager& GetPaletteManager() const { return *_paletteManager; }
+    const Rgb6Palette* GetRgb6Palette() const { return _rgb6Palette; }
+
+    virtual PaletteManager& GetPaletteManager(int scanline) const { return *_paletteManager; }
+
+    void SetClipArea(const Rectangle& clipArea, bool inverse = false)
+    {
+        _clipArea = clipArea;
+        _inverseClipArea = inverse;
+    }
+
+    constexpr bool IsVisible(const Rectangle& bounds) const
+    {
+        if (!Rectangle(0, 0, 256, 192).OverlapsWith(bounds))
+            return false;
+        return _inverseClipArea ? !_clipArea.Contains(bounds) : _clipArea.OverlapsWith(bounds);
+    }
+
+    void ResetClipArea()
+    {
+        SetClipArea(Rectangle(0, 0, 256, 192));
+    }
+
+private:
+    u32 _priority;
+    u8 _polygonId;
+
+    OamManager* _oamManager;
+    PaletteManager* _paletteManager;
+    const Rgb6Palette* _rgb6Palette;
+    Rectangle _clipArea;
+    bool _inverseClipArea = false;
+};