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Use cairo-PostScript to output PostScript when pango is available. This allows to draw in vectorial form any script. Before, only the Latin script could be drawn to PostScript in vectorial form.pull/150/head
ManoloFLTK
5 years ago
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12 changed files with 1305 additions and 491 deletions
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//
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// Support for graphics output to PostScript file for the Fast Light Tool Kit (FLTK).
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//
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// Copyright 2010-2020 by Bill Spitzak and others.
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//
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// This library is free software. Distribution and use rights are outlined in
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// the file "COPYING" which should have been included with this file. If this
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// file is missing or damaged, see the license at:
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//
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// https://www.fltk.org/COPYING.php
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//
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// Please see the following page on how to report bugs and issues:
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//
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// https://www.fltk.org/bugs.php
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//
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/** \file Fl_Pango_PostScript_Graphics_Driver.H
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Declaration of class Fl_PostScript_Graphics_Driver. |
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*/ |
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#ifndef FL_POSTSCRIPT_GRAPHICS_DRIVER_H |
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#define FL_POSTSCRIPT_GRAPHICS_DRIVER_H |
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#include "../../config_lib.h" |
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#include <FL/Fl_PostScript.H> |
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#ifndef USE_PANGO |
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#define USE_PANGO 0 |
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#endif |
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#if USE_PANGO |
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typedef struct _cairo_surface cairo_surface_t; |
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typedef struct _cairo cairo_t; |
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typedef struct _PangoLayout PangoLayout; |
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#endif |
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/**
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\cond DriverDev |
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\addtogroup DriverDeveloper |
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\{ |
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*/ |
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/**
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PostScript graphical backend. |
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*/ |
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class FL_EXPORT Fl_PostScript_Graphics_Driver : public Fl_Graphics_Driver { |
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private: |
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#if USE_PANGO |
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cairo_t *cairo_; |
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PangoLayout *pango_layout_; |
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void draw_rgb_bitmap_(Fl_Image *img,int XP, int YP, int WP, int HP, int cx, int cy); |
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#else |
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void transformed_draw_extra(const char* str, int n, double x, double y, int w, bool rtl); |
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void *prepare_rle85(); |
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void write_rle85(uchar b, void *data); |
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void close_rle85(void *data); |
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void *prepare85(); |
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void write85(void *data, const uchar *p, int len); |
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void close85(void *data); |
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int scale_for_image_(Fl_Image *img, int XP, int YP, int WP, int HP,int cx, int cy); |
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#endif |
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protected: |
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uchar **mask_bitmap() {return &mask;} |
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public: |
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Fl_PostScript_Graphics_Driver(); |
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#ifndef FL_DOXYGEN |
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enum SHAPE{NONE=0, LINE, LOOP, POLYGON, POINTS}; |
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class Clip { |
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public: |
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int x, y, w, h; |
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Clip *prev; |
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}; |
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Clip * clip_; |
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int lang_level_; |
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int gap_; |
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int pages_; |
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int shape_; |
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int linewidth_;// need for clipping, lang level 1-2
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int linestyle_;//
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int interpolate_; //interpolation of images
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unsigned char cr_,cg_,cb_; |
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char linedash_[256];//should be enough
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void concat(); // transform ror scalable dradings...
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void reconcat(); //invert
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void recover(); //recovers the state after grestore (such as line styles...)
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void reset(); |
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uchar * mask; |
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int mx; // width of mask;
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int my; // mask lines
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Fl_PostScript_Close_Command close_cmd_; |
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int page_policy_; |
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int nPages; |
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int orientation_; |
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float scale_x; |
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float scale_y; |
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float angle; |
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int left_margin; |
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int top_margin; |
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FILE *output; |
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double pw_, ph_; |
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uchar bg_r, bg_g, bg_b; |
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int start_postscript (int pagecount, enum Fl_Paged_Device::Page_Format format, enum Fl_Paged_Device::Page_Layout layout); |
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int start_eps(int width, int height); |
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/* int alpha_mask(const uchar * data, int w, int h, int D, int LD=0);
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*/ |
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void transformed_draw(const char* s, int n, double x, double y); //precise text placing
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void transformed_draw(const char* s, double x, double y); |
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int alpha_mask(const uchar * data, int w, int h, int D, int LD=0); |
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enum Fl_Paged_Device::Page_Format page_format_; |
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char *ps_filename_; |
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void page_policy(int p); |
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int page_policy(){return page_policy_;}; |
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void close_command(Fl_PostScript_Close_Command cmd){close_cmd_=cmd;}; |
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FILE * file() {return output;}; |
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//void orientation (int o);
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//Fl_PostScript_Graphics_Driver(FILE *o, int lang_level, int pages = 0); // ps (also multi-page) constructor
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void interpolate(int i){interpolate_=i;}; |
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int interpolate(){return interpolate_;} |
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void page(double pw, double ph, int media = 0); |
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void page(int format); |
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#endif // FL_DOXYGEN
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// implementation of drawing methods
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void color(Fl_Color c); |
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void color(uchar r, uchar g, uchar b); |
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void push_clip(int x, int y, int w, int h); |
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int clip_box(int x, int y, int w, int h, int &X, int &Y, int &W, int &H); |
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int not_clipped(int x, int y, int w, int h); |
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void push_no_clip(); |
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void pop_clip(); |
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void line_style(int style, int width=0, char* dashes=0); |
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void rect(int x, int y, int w, int h); |
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void rectf(int x, int y, int w, int h); |
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void xyline(int x, int y, int x1); |
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void xyline(int x, int y, int x1, int y2); |
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void xyline(int x, int y, int x1, int y2, int x3); |
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void yxline(int x, int y, int y1); |
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void yxline(int x, int y, int y1, int x2); |
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void yxline(int x, int y, int y1, int x2, int y3); |
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void line(int x1, int y1, int x2, int y2); |
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void line(int x1, int y1, int x2, int y2, int x3, int y3); |
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void loop(int x0, int y0, int x1, int y1, int x2, int y2); |
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void loop(int x0, int y0, int x1, int y1, int x2, int y2, int x3, int y3); |
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void polygon(int x0, int y0, int x1, int y1, int x2, int y2); |
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void polygon(int x0, int y0, int x1, int y1, int x2, int y2, int x3, int y3); |
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void point(int x, int y); |
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void begin_points(); |
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void begin_line(); |
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void begin_loop(); |
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void begin_polygon(); |
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void vertex(double x, double y); |
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void curve(double x, double y, double x1, double y1, double x2, double y2, double x3, double y3); |
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void circle(double x, double y, double r); |
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void arc(double x, double y, double r, double start, double a); |
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void arc(int x, int y, int w, int h, double a1, double a2); |
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void pie(int x, int y, int w, int h, double a1, double a2); |
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void end_points(); |
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void end_line(); |
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void end_loop(); |
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void end_polygon(); |
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void begin_complex_polygon(){begin_polygon();}; |
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void gap(){gap_=1;}; |
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void end_complex_polygon(){end_polygon();}; |
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void transformed_vertex(double x, double y); |
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void draw_image(const uchar* d, int x,int y,int w,int h, int delta=3, int ldelta=0); |
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void draw_image_mono(const uchar* d, int x,int y,int w,int h, int delta=1, int ld=0); |
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void draw_image(Fl_Draw_Image_Cb call, void* data, int x,int y, int w, int h, int delta=3); |
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void draw_image_mono(Fl_Draw_Image_Cb call, void* data, int x,int y, int w, int h, int delta=1); |
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void draw(const char* s, int nBytes, int x, int y) {transformed_draw(s,nBytes,x,y); }; |
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void draw(const char* s, int nBytes, float x, float y) {transformed_draw(s,nBytes,x,y); }; |
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void draw(int angle, const char *str, int n, int x, int y); |
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void rtl_draw(const char* s, int n, int x, int y); |
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void font(int face, int size); |
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double width(const char *, int); |
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double width(unsigned int u); |
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void text_extents(const char *c, int n, int &dx, int &dy, int &w, int &h); |
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int height(); |
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int descent(); |
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void draw_pixmap(Fl_Pixmap * pxm,int XP, int YP, int WP, int HP, int cx, int cy); |
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void draw_bitmap(Fl_Bitmap * bitmap,int XP, int YP, int WP, int HP, int cx, int cy); |
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void draw_rgb(Fl_RGB_Image * rgb,int XP, int YP, int WP, int HP, int cx, int cy); |
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#if USE_PANGO |
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cairo_t *cr() { return cairo_; } |
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PangoLayout *pango_layout() {return pango_layout_;}; |
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void check_status(void); |
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#else |
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/** Shields output PostScript data from modifications of the current locale.
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It typically avoids PostScript errors caused if the current locale uses comma instead of dot |
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as "decimal point". |
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\param format directives controlling output PostScript data |
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\return value returned by vfprintf() call |
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*/ |
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int clocale_printf(const char *format, ...); |
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#endif |
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~Fl_PostScript_Graphics_Driver(); |
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// ---
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Fl_Bitmask create_bitmask(int w, int h, const uchar *array) { return 0L; } |
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virtual int has_feature(driver_feature feature_mask) { return feature_mask & PRINTER; } |
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void ps_origin(int x, int y); |
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void ps_translate(int, int); |
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void ps_untranslate(); |
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}; |
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/**
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\} |
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\endcond |
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*/ |
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#endif // FL_POSTSCRIPT_GRAPHICS_DRIVER_H
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