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