Repo created

3party/agg/ctrl/agg_ctrl.h

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+//----------------------------------------------------------------------------
+// Anti-Grain Geometry - Version 2.4
+// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
+//
+// Permission to copy, use, modify, sell and distribute this software 
+// is granted provided this copyright notice appears in all copies. 
+// This software is provided "as is" without express or implied
+// warranty, and with no claim as to its suitability for any purpose.
+//
+//----------------------------------------------------------------------------
+// Contact: mcseem@antigrain.com
+//          mcseemagg@yahoo.com
+//          http://www.antigrain.com
+//----------------------------------------------------------------------------
+//
+// Function render_ctrl
+//
+//----------------------------------------------------------------------------
+
+#ifndef AGG_CTRL_INCLUDED
+#define AGG_CTRL_INCLUDED
+
+#include "agg_trans_affine.h"
+#include "agg_renderer_scanline.h"
+
+namespace agg
+{
+
+    //--------------------------------------------------------------------ctrl
+    class ctrl
+    {
+    public:
+        //--------------------------------------------------------------------
+        virtual ~ctrl() {}
+        ctrl(double x1, double y1, double x2, double y2, bool flip_y) :
+            m_x1(x1), m_y1(y1), m_x2(x2), m_y2(y2), 
+            m_flip_y(flip_y),
+            m_mtx(0)
+        {
+        }
+
+        //--------------------------------------------------------------------
+        virtual bool in_rect(double x, double y) const = 0;
+        virtual bool on_mouse_button_down(double x, double y) = 0;
+        virtual bool on_mouse_button_up(double x, double y) = 0;
+        virtual bool on_mouse_move(double x, double y, bool button_flag) = 0;
+        virtual bool on_arrow_keys(bool left, bool right, bool down, bool up) = 0;
+
+        //--------------------------------------------------------------------
+        void transform(const trans_affine& mtx) { m_mtx = &mtx; }
+        void no_transform() { m_mtx = 0; }
+
+        //--------------------------------------------------------------------
+        void transform_xy(double* x, double* y) const
+        {
+            if(m_flip_y) *y = m_y1 + m_y2 - *y;
+            if(m_mtx) m_mtx->transform(x, y);
+        }
+
+        //--------------------------------------------------------------------
+        void inverse_transform_xy(double* x, double* y) const
+        {
+            if(m_mtx) m_mtx->inverse_transform(x, y);
+            if(m_flip_y) *y = m_y1 + m_y2 - *y;
+        }
+
+        //--------------------------------------------------------------------
+        double scale() const { return m_mtx ? m_mtx->scale() : 1.0; }
+
+    private:
+        ctrl(const ctrl&);
+        const ctrl& operator = (const ctrl&);
+
+    protected:
+        double m_x1;
+        double m_y1;
+        double m_x2;
+        double m_y2;
+
+    private:
+        bool m_flip_y;
+        const trans_affine* m_mtx;
+    };
+
+
+    //--------------------------------------------------------------------
+    template<class Rasterizer, class Scanline, class Renderer, class Ctrl> 
+    void render_ctrl(Rasterizer& ras, Scanline& sl, Renderer& r, Ctrl& c)
+    {
+        unsigned i;
+        for(i = 0; i < c.num_paths(); i++)
+        {
+            ras.reset();
+            ras.add_path(c, i);
+            render_scanlines_aa_solid(ras, sl, r, c.color(i));
+        }
+    }
+
+
+    //--------------------------------------------------------------------
+    template<class Rasterizer, class Scanline, class Renderer, class Ctrl> 
+    void render_ctrl_rs(Rasterizer& ras, Scanline& sl, Renderer& r, Ctrl& c)
+    {
+        unsigned i;
+        for(i = 0; i < c.num_paths(); i++)
+        {
+            ras.reset();
+            ras.add_path(c, i);
+            r.color(c.color(i));
+            render_scanlines(ras, sl, r);
+        }
+    }
+
+
+}
+
+
+#endif