Make a SharedGraphics directory for classes shared between Kernel and LibGUI.

SharedGraphics/Painter.h

@@ -0,0 +1,47 @@
+#pragma once
+
+#include "Color.h"
+#include "Point.h"
+#include "Rect.h"
+#include "Size.h"
+#include <AK/AKString.h>
+
+class CharacterBitmap;
+class GraphicsBitmap;
+class Font;
+class Widget;
+class Window;
+
+class Painter {
+public:
+    explicit Painter(Widget&);
+    explicit Painter(GraphicsBitmap&);
+    ~Painter();
+    void fill_rect(const Rect&, Color);
+    void draw_rect(const Rect&, Color);
+    void draw_bitmap(const Point&, const CharacterBitmap&, Color = Color());
+    void set_pixel(const Point&, Color);
+    void draw_line(const Point&, const Point&, Color);
+    void draw_focus_rect(const Rect&);
+    void blit(const Point&, const GraphicsBitmap&);
+
+    enum class TextAlignment { TopLeft, CenterLeft, Center };
+    void draw_text(const Rect&, const String&, TextAlignment = TextAlignment::TopLeft, Color = Color());
+    void draw_glyph(const Point&, char, Color);
+
+    const Font& font() const { return *m_font; }
+
+    enum class DrawOp { Copy, Xor };
+    void set_draw_op(DrawOp op) { m_draw_op = op; }
+    DrawOp draw_op() const { return m_draw_op; }
+
+private:
+    void set_pixel_with_draw_op(dword& pixel, const Color&);
+
+    const Font* m_font;
+    Point m_translation;
+    Rect m_clip_rect;
+    RetainPtr<GraphicsBitmap> m_target;
+    Window* m_window { nullptr };
+    DrawOp m_draw_op { DrawOp::Copy };
+};