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