171 lines
6.1 KiB
C
171 lines
6.1 KiB
C
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//----------------------------------------------------------------------------
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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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// class gamma_ctrl
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//
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//----------------------------------------------------------------------------
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#ifndef AGG_GAMMA_CTRL_INCLUDED
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#define AGG_GAMMA_CTRL_INCLUDED
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#include "agg_basics.h"
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#include "agg_gamma_spline.h"
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#include "agg_ellipse.h"
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#include "agg_conv_stroke.h"
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#include "agg_gsv_text.h"
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#include "agg_trans_affine.h"
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#include "agg_color_rgba.h"
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#include "agg_ctrl.h"
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namespace agg
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{
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//------------------------------------------------------------------------
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// Class that can be used to create an interactive control to set up
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// gamma arrays.
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//------------------------------------------------------------------------
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class gamma_ctrl_impl : public ctrl
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{
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public:
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gamma_ctrl_impl(double x1, double y1, double x2, double y2, bool flip_y=false);
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// Set other parameters
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void border_width(double t, double extra=0.0);
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void curve_width(double t) { m_curve_width = t; }
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void grid_width(double t) { m_grid_width = t; }
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void text_thickness(double t) { m_text_thickness = t; }
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void text_size(double h, double w=0.0);
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void point_size(double s) { m_point_size = s; }
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// Event handlers. Just call them if the respective events
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// in your system occure. The functions return true if redrawing
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// is required.
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virtual bool in_rect(double x, double y) const;
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virtual bool on_mouse_button_down(double x, double y);
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virtual bool on_mouse_button_up(double x, double y);
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virtual bool on_mouse_move(double x, double y, bool button_flag);
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virtual bool on_arrow_keys(bool left, bool right, bool down, bool up);
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void change_active_point();
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// A copy of agg::gamma_spline interface
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void values(double kx1, double ky1, double kx2, double ky2);
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void values(double* kx1, double* ky1, double* kx2, double* ky2) const;
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const unsigned char* gamma() const { return m_gamma_spline.gamma(); }
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double y(double x) const { return m_gamma_spline.y(x); }
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double operator() (double x) const { return m_gamma_spline.y(x); }
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const gamma_spline& get_gamma_spline() const { return m_gamma_spline; }
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// Vertex soutce interface
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unsigned num_paths() { return 7; }
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void rewind(unsigned idx);
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unsigned vertex(double* x, double* y);
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private:
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void calc_spline_box();
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void calc_points();
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void calc_values();
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gamma_spline m_gamma_spline;
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double m_border_width;
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double m_border_extra;
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double m_curve_width;
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double m_grid_width;
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double m_text_thickness;
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double m_point_size;
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double m_text_height;
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double m_text_width;
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double m_xc1;
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double m_yc1;
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double m_xc2;
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double m_yc2;
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double m_xs1;
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double m_ys1;
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double m_xs2;
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double m_ys2;
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double m_xt1;
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double m_yt1;
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double m_xt2;
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double m_yt2;
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conv_stroke<gamma_spline> m_curve_poly;
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ellipse m_ellipse;
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gsv_text m_text;
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conv_stroke<gsv_text> m_text_poly;
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unsigned m_idx;
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unsigned m_vertex;
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double m_vx[32];
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double m_vy[32];
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double m_xp1;
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double m_yp1;
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double m_xp2;
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double m_yp2;
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bool m_p1_active;
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unsigned m_mouse_point;
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double m_pdx;
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double m_pdy;
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};
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template<class ColorT> class gamma_ctrl : public gamma_ctrl_impl
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{
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public:
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gamma_ctrl(double x1, double y1, double x2, double y2, bool flip_y=false) :
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gamma_ctrl_impl(x1, y1, x2, y2, flip_y),
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m_background_color(rgba(1.0, 1.0, 0.9)),
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m_border_color(rgba(0.0, 0.0, 0.0)),
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m_curve_color(rgba(0.0, 0.0, 0.0)),
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m_grid_color(rgba(0.2, 0.2, 0.0)),
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m_inactive_pnt_color(rgba(0.0, 0.0, 0.0)),
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m_active_pnt_color(rgba(1.0, 0.0, 0.0)),
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m_text_color(rgba(0.0, 0.0, 0.0))
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{
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m_colors[0] = &m_background_color;
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m_colors[1] = &m_border_color;
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m_colors[2] = &m_curve_color;
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m_colors[3] = &m_grid_color;
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m_colors[4] = &m_inactive_pnt_color;
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m_colors[5] = &m_active_pnt_color;
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m_colors[6] = &m_text_color;
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}
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// Set colors
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void background_color(const ColorT& c) { m_background_color = c; }
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void border_color(const ColorT& c) { m_border_color = c; }
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void curve_color(const ColorT& c) { m_curve_color = c; }
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void grid_color(const ColorT& c) { m_grid_color = c; }
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void inactive_pnt_color(const ColorT& c) { m_inactive_pnt_color = c; }
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void active_pnt_color(const ColorT& c) { m_active_pnt_color = c; }
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void text_color(const ColorT& c) { m_text_color = c; }
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const ColorT& color(unsigned i) const { return *m_colors[i]; }
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private:
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gamma_ctrl(const gamma_ctrl<ColorT>&);
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const gamma_ctrl<ColorT>& operator = (const gamma_ctrl<ColorT>&);
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ColorT m_background_color;
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ColorT m_border_color;
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ColorT m_curve_color;
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ColorT m_grid_color;
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ColorT m_inactive_pnt_color;
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ColorT m_active_pnt_color;
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ColorT m_text_color;
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ColorT* m_colors[7];
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};
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}
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#endif
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