📄 display_base.h
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/* * Copyright (c) 1999 - 2001, Artur Merke <amerke@ira.uka.de> * * This file is part of FrameView2d. * * FrameView2d is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your option) * any later version. * * FrameView2d is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with FrameView2d; see the file COPYING. If not, write to * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */#ifndef _DISPLAY_BASE_#define _DISPLAY_BASE_#include "rgbcolor.h"#include "vector2d.h"#include "object2d.h"struct DisplayObject { DisplayObject() { mark_pos_change(); mark_col_change(); } virtual ~DisplayObject() { } void mark_pos_change() { area_number= 0; } void mark_col_change() { col_change= true; } virtual void set_max_size(int size) {}; bool col_change; unsigned int area_number;};class DisplayBase {public: virtual ~DisplayBase() { } virtual void draw_point(DisplayObject * d_obj, const RGBcolor & col, const Point2d & )=0; virtual DisplayObject * create_point()=0; //{ return 0; } virtual void draw_points(DisplayObject * d_obj, const RGBcolor & col, int num, const Point2d * )=0; virtual DisplayObject * create_points(int num)=0; //{ return 0; } //the endpoints of the line are absolute coordinates virtual void draw_line(DisplayObject * d_obj, const RGBcolor & col, const Line2d & )=0; virtual DisplayObject * create_line()=0; //{ return 0; } virtual void draw_lines(DisplayObject * d_obj, const RGBcolor & col, int num, const Line2d * )=0; virtual DisplayObject * create_lines(int num)=0; //{ return 0; } virtual void draw_circle(DisplayObject * d_obj, const RGBcolor & col, const Circle2d & )=0; virtual void fill_circle(DisplayObject * d_obj, const RGBcolor & col, const Circle2d & )=0; virtual DisplayObject * create_circle()=0; //{ return 0; } virtual void draw_circles(DisplayObject * d_obj, const RGBcolor & col, int num, const Circle2d * )=0; virtual void fill_circles(DisplayObject * d_obj, const RGBcolor & col, int num, const Circle2d * )=0; virtual DisplayObject * create_circles(int num)=0; //{ return 0; } //specifies an arc with absolute begin in ang1 and absolute!!! end in ang2, the path goes from ang1 to ang2 couterclockwise virtual void draw_circlearc(DisplayObject * d_obj, const RGBcolor & col, const CircleArc2d & )=0; virtual void fill_circlearc(DisplayObject * d_obj, const RGBcolor & col, const CircleArc2d & )=0; virtual DisplayObject * create_circlearc()=0; //{ return 0; } virtual void draw_circlearcs(DisplayObject * d_obj, const RGBcolor & col, int num, const CircleArc2d * )=0; virtual void fill_circlearcs(DisplayObject * d_obj, const RGBcolor & col, int num, const CircleArc2d * )=0; virtual DisplayObject * create_circlearcs(int num)=0; //{ return 0; } //all boudary points of the polygon are treated as absolute coordinates virtual void draw_polyline(DisplayObject * d_obj, const RGBcolor & col, int num, const Point2d * )=0; virtual DisplayObject * create_polyline(int num)=0; //{ return 0; } virtual void draw_polygon(DisplayObject * d_obj, const RGBcolor & col, int num, const Point2d * )=0; virtual void fill_polygon(DisplayObject * d_obj, const RGBcolor & col, int num, const Point2d * )=0; virtual DisplayObject * create_polygon(int num)=0; //{ return 0; } virtual void draw_string(DisplayObject * d_obj, const RGBcolor & col, const Point2d &,int len, const char * str)=0; virtual DisplayObject * create_string()=0; //{ return 0; } // virtual void set_background_color(const RGBcolor & col)=0;};#endif
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