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Fl_PostScript.h

/*
 * $Id: Fl_PostScript.h,v 1.5 2003/04/24 21:19:18 laza2000 Exp $
 *
 * Extended Fast Light Toolkit (EFLTK)
 * Copyright (C) 2002-2003 by EDE-Team
 * WWW: http://www.sourceforge.net/projects/ede
 *
 * Fast Light Toolkit (FLTK)
 * Copyright (C) 1998-2003 by Bill Spitzak and others.
 * WWW: http://www.fltk.org
 *
 * This library is distributed under the GNU LIBRARY GENERAL PUBLIC LICENSE
 * version 2. See COPYING for details.
 *
 * Author : Mikko Lahteenmaki
 * Email  : mikko@fltk.net
 *
 * Please report all bugs and problems to "efltk-bugs@fltk.net"
 *
 */

#ifndef _FL_POSTSCRIPT_H_
#define _FL_POSTSCRIPT_H_

#include "Fl_String.h"
#include "fl_draw.h"
#include "Fl_Printer.h"
#include "Enumerations.h"
#include <stdio.h> // FILE *

class FL_API Fl_PostScript : public Fl_Printer
{
    enum SHAPE { NONE=0, LINE, LOOP, POLYGON, POINTS };

    class Clip{
    public:
        int x, y, w, h;
        Clip *prev;
    };
    Clip *clip_;

    int lang_level_;
    Fl_Font font_;
    float size_;
    Fl_Color color_;
    FILE *output;

    double width_;
    double height_;

    int shape_;
    int linewidth_;// need for clipping, lang level 1-2
    int linestyle_;//
    int interpolate_; //interpolation of images
    unsigned char cr_,cg_,cb_;
    char  linedash_[256];//should be enought

    void recover(); //recovers the state afrer grestore
    void reset();

    //double c_x_, c_y_, c_w_, c_h_; //no_clip clipping (to margins)
    int colored_, line_styled_, fonted_;
    //these are flags if graphical state (color, painting, font)should be recovered
    // for language level 1-2: it has no clipsace/cliprestore, so gsave / grestore is used

    uchar *mask;
    int mx; // width of mask;
    int my; // mask lines
    Fl_Color bg_;

protected:
    int alpha_mask(const uchar * data, int w, int h, int D, int LD=0);

    void transformed_draw(const char* s, int n, float x, float y); //precise text placing
    void transformed_draw(const char* s, float x, float y) { transformed_draw(s,strlen(s),x,y); }

    void draw_scalled_image(const uchar *data, double x, double y, double w, double h, int iw, int ih, int D=3, int LD=0);
    void draw_scalled_image_mono(const uchar *data, double x, double y, double w, double h, int iw, int ih, int D=3, int LD=0);
    void draw_scalled_image(Fl_Draw_Image_Cb call, void *data, double x, double y, double w, double h, int iw, int ih, int D);
    void draw_scalled_image_mono(Fl_Draw_Image_Cb call, void *data, double x, double y, double w, double h, int iw, int ih, int D);

public:
    void draw(Fl_Widget * w);

    Fl_PostScript(FILE *o, int lang_level, int format = A4, int orientation = PORTRAIT); // ps (aslo multi-page) constructor
    Fl_PostScript(FILE *o, int lang_level, double x, double y, double w, double h); //eps constructor
    virtual ~Fl_PostScript();

    int capabilities() { return 0; }

    void interpolate(int i) { interpolate_=i; }
    int interpolate() const { return interpolate_; }

    void page(double pw, double ph, int orientation);
    void page(int format, int orientation);
    void page() { page(pw_,ph_,orientation_); }
    void margins(double left, double top, double right, double bottom);

    void fit(double x, double y, double w, double h, int align=FL_ALIGN_CENTER);
    void fit(double x, double y, double w, double h, double dpi, int align=FL_ALIGN_CENTER);

    void place(double x, double y, double w, double h, double tx, double ty, double tw, double th, int align);
    void place(double x, double y, double w, double h, double tx, double ty, double tw, double th, double dpi, int align);


    void color(Fl_Color c);
    void bg_color(Fl_Color bg);
    void color(uchar r, uchar g, uchar b);
    Fl_Color color() const { return color_; }

    void push_clip(int x, int y, int w, int h);
    void clip_out(int x, int y, int w, int h);
    void push_no_clip();
    void pop_clip();
    int not_clipped(int x, int y, int w, int h);
    int clip_box(int x, int y, int w, int h, int &X, int &Y, int &W, int &H);

    void line_style(int style, int width, char* dashes);

    //fl_vertex.cpp current transformation:
    void push_matrix();
    void pop_matrix();
    void scale(float x, float y);
    void scale(float x);
    void translate(float x, float y);
    void translate(int x, int y);
    void rotate(float d);
    void mult_matrix(float a, float b, float c, float d, float e, float f);
    void load_identity();

    // get and use transformed positions:
    void transform(float& x, float& y);
    void transform(int& x, int& y);
    void transform_distance(float& x, float& y);

    void curve(float x, float y, float x1, float y1, float x2, float y2, float x3, float y3);

    void arc(float x, float y, float w, float h, float start, float end);
    void pie(int x, int y, int w, int h, float a1, float a2, int what);
    void circle(float x, float y, float r);
    void ellipse(float x, float y, float w, float h);

    void rect(int x, int y, int w, int h);
    void rectf(int x, int y, int w, int h);
    void point(int x, int y);
    void line(int x1, int y1, int x2, int y2);

    void points();
    void stroke();
    void fill();
    void fill_stroke(Fl_Color);

    void newpath();
    void vertex(float x, float y);
    void vertex(int x, int y);
    void vertices(int n, const float v[][2]);
    void vertices(int n, const int v[][2]);
    void transformed_vertices(int n, const float v[][2]);
    void closepath();

    void font(Fl_Font face, float size);
    void font(const char* s, float size);
    void font(const char* s, int attributes, float size);

    Fl_Font font() const { return font_; }
    float size() const { return size_; }

    void  encoding(const char*);
    const char* encoding() const;

    const char* fontname(Fl_Font, int * = 0);

    float width(unsigned int ucs) const;
    float width(const char* s) const;
    float width(const Fl_String& s) const;
    float width(const char* s, int n) const;

    float height() const;
    float descent() const;

    void rtl_draw(const char *s, int n, float x, float y);
    void draw(const char* s, int n, float x, float y) { transformed_draw(s,n,x,y); }
    void draw(const Fl_String &s, float x, float y) { draw(s.c_str(), s.length(), x, y); }
    void draw(const char* s, float x, float y) { draw(s,strlen(s),x,y); }

    void draw_image(const uchar* d, int x,int y,int w,int h, int delta=3, int ldelta=0){draw_scalled_image(d,x,y,w,h,w,h,delta,ldelta);}
    void draw_image_mono(const uchar* d, int x,int y,int w,int h, int delta=1, int ld=0){draw_scalled_image_mono(d,x,y,w,h,w,h,delta,ld);}

    void draw_image(Fl_Draw_Image_Cb call, void* data, int x,int y, int w, int h, int delta=3){draw_scalled_image(call,data, x, y, w, h, w, h, delta);}

    void draw_image_mono(Fl_Draw_Image_Cb call, void* data, int x,int y, int w, int h, int delta=1){draw_scalled_image_mono(call, data, x, y, w, h, w, h, delta);}

    void rectf(int x, int y, int w, int h, uchar r,  uchar g, uchar b);
    void rectf(int x, int y, int w, int h, Fl_Color c) { uchar r, g, b; fl_get_color(c, r, g, b); rectf(x, y, w, h, r, g, b); }


    Fl_PostScript(FILE *o, int lang_level, double pw, double ph, int orientation); // ps (aslo multi-page) constructor
};

//Fl_PostScript * fl_psfile_chooser(Fl_PsFile_Settings * s=0, int * begin = 0, int * end = 0);

#endif

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