Better device hierarchy with surfaces and graphics drivers.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@7617 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

1 files changed, 293 insertions, 0 deletions

diff --git a/FL/Fl_PostScript.H b/FL/Fl_PostScript.H
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+//
+// "$Id: Fl_PostScript.H 7556 2010-04-27 21:33:44Z manolo $"
+//
+// Support for graphics output to PostScript file for the Fast Light Tool Kit (FLTK).
+//
+// Copyright 2010 by Bill Spitzak and others.
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Library General Public
+// License as published by the Free Software Foundation; either
+// version 2 of the License, or (at your option) any later version.
+//
+// This library 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
+// Library General Public License for more details.
+//
+// You should have received a copy of the GNU Library General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+// USA.
+//
+// Please report all bugs and problems on the following page:
+//
+//     http://www.fltk.org/str.php
+//
+/** \file Fl_PostScript.H 
+ \brief declaration of classes Fl_PostScript_Graphics_Driver, Fl_PostScript_File_Device.
+ */
+
+
+#ifndef Fl_PostScript_H
+#define Fl_PostScript_H
+
+#include <FL/Fl_Paged_Device.H>
+#include <FL/fl_draw.H>
+
+#define NO_PAGE_FORMATS 30 /* MSVC6 compilation fix */
+
+/**
+ \brief PostScript graphical backend.
+ *
+ PostScript text output is presently implemented only for the latin character set.
+ FLTK's standard fonts are output using PostScript's standard fonts: Helvetica, Courier, 
+ Times (and their bold, oblique, italic variants), Symbol, ZapfDingbats.
+ */
+class Fl_PostScript_Graphics_Driver : public Fl_Graphics_Driver {
+public: 
+  static const char *device_type;
+  /**
+   \brief Possible page formats.
+   */
+  enum Page_Format {
+    A0 = 0,
+    A1,
+    A2,
+    A3,
+    A4,
+    A5,
+    A6,
+    A7,
+    A8,
+    A9,
+    B0,
+    B1,
+    B2,
+    B3,
+    B4,
+    B5,
+    B6,
+    B7,
+    B8,
+    B9,
+    B10,
+    C5E,
+    DLE,
+    EXECUTIVE,
+    FOLIO,
+    LEDGER,
+    LEGAL,
+    LETTER,
+    TABLOID,
+    ENVELOPE,
+    MEDIA = 0x1000
+  };
+  
+  /**
+   \brief Possible page layouts.
+   */
+  enum Page_Layout {PORTRAIT = 0, LANDSCAPE = 0x100, REVERSED = 0x200, ORIENTATION = 0x300};
+    
+#ifndef FL_DOXYGEN
+public:
+  enum SHAPE{NONE=0, LINE, LOOP, POLYGON, POINTS};
+  
+typedef struct page_format {
+  int width;
+  int height;
+  const char *name;
+} page_format;
+  
+class Clip {
+  public:
+    int x, y, w, h;
+    Clip *prev;
+  };
+  Clip * clip_;
+  
+  int lang_level_;
+  int font_;
+  int size_;
+  Fl_Color color_;
+  int gap_;
+  int pages_;
+  
+  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 enough
+  void concat();  // transform ror scalable dradings...
+  void reconcat(); //invert
+  void recover(); //recovers the state after grestore (such as line styles...)
+  void reset();
+  
+  uchar * mask;
+  int mx; // width of mask;
+  int my; // mask lines
+  //Fl_Color bg_;
+  int (*close_cmd_)(FILE *);
+  int page_policy_;
+  int nPages;
+  int orientation_;
+  
+  float scale_x;
+  float scale_y;
+  float angle;
+  int left_margin;
+  int top_margin;
+ 
+  FILE *output;
+  double pw_, ph_;
+  static const page_format page_formats[NO_PAGE_FORMATS];
+  
+  uchar bg_r, bg_g, bg_b;
+  int start_postscript (int pagecount, enum Page_Format format, enum Page_Layout layout);
+  /*  int alpha_mask(const uchar * data, int w, int h, int D, int LD=0);
+   */
+  void draw(const char* s, int n, int x, int y) {transformed_draw(s,n,x,y); };
+  void draw(int angle, const char *str, int n, int x, int y);
+  void transformed_draw(const char* s, int n, double x, double y); //precise text placing
+  void transformed_draw(const char* s, double x, double y);
+  int alpha_mask(const uchar * data, int w, int h, int D, int LD=0);
+  void draw_scaled_image(const uchar *data, double x, double y, double w, double h, int iw, int ih, int D=3, int LD=0);
+  void draw_scaled_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_scaled_image(Fl_Draw_Image_Cb call, void *data, double x, double y, double w, double h, int iw, int ih, int D);
+  void draw_scaled_image_mono(Fl_Draw_Image_Cb call, void *data, double x, double y, double w, double h, int iw, int ih, int D);
+  
+  enum Page_Format page_format_;
+  char *ps_filename_;
+  // implementation of drawing methods
+  void color(Fl_Color c);
+  //void bg_color(Fl_Color bg);
+  void color(uchar r, uchar g, uchar b);
+  Fl_Color color(){return color_;};
+  
+  void push_clip(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);
+  int not_clipped(int x, int y, int w, int h);
+  void push_no_clip();
+  void pop_clip();
+  
+  void line_style(int style, int width=0, char* dashes=0);
+  
+  void rect(int x, int y, int w, int h);
+  void rectf(int x, int y, int w, int h);
+  
+  void xyline(int x, int y, int x1);
+  void xyline(int x, int y, int x1, int y2);
+  void xyline(int x, int y, int x1, int y2, int x3);
+  
+  void yxline(int x, int y, int y1);
+  void yxline(int x, int y, int y1, int x2);
+  void yxline(int x, int y, int y1, int x2, int y3);
+  
+  void line(int x1, int y1, int x2, int y2);
+  void line(int x1, int y1, int x2, int y2, int x3, int y3);  
+  
+  void loop(int x0, int y0, int x1, int y1, int x2, int y2);
+  void loop(int x0, int y0, int x1, int y1, int x2, int y2, int x3, int y3);
+  void polygon(int x0, int y0, int x1, int y1, int x2, int y2);
+  void polygon(int x0, int y0, int x1, int y1, int x2, int y2, int x3, int y3);
+  void point(int x, int y);
+  
+  void begin_points();
+  void begin_line();
+  void begin_loop();
+  void begin_polygon();
+  void vertex(double x, double y);
+  void curve(double x, double y, double x1, double y1, double x2, double y2, double x3, double y3);
+  void circle(double x, double y, double r);
+  void arc(double x, double y, double r, double start, double a);
+  void arc(int x, int y, int w, int h, double a1, double a2);
+  void pie(int x, int y, int w, int h, double a1, double a2);
+  void end_points();
+  void end_line();
+  void end_loop();
+  void end_polygon();
+  void begin_complex_polygon(){begin_polygon();};
+  void gap(){gap_=1;};
+  void end_complex_polygon(){end_polygon();};
+  void transformed_vertex(double x, double y);
+  
+  void font(int face, int size);
+  int font(){return font_;};
+  int size(){return size_;};
+  double width(unsigned c);
+  double width(const char* s, int n);
+  int descent();
+  int height();
+  
+  void draw_image(const uchar* d, int x,int y,int w,int h, int delta=3, int ldelta=0){draw_scaled_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_scaled_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_scaled_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_scaled_image_mono(call, data, x, y, w, h, w, h, delta);};
+  
+  void draw(Fl_Pixmap * pxm,int XP, int YP, int WP, int HP, int cx, int cy);
+  void draw(Fl_RGB_Image * rgb,int XP, int YP, int WP, int HP, int cx, int cy);
+  void draw(Fl_Bitmap * bitmap,int XP, int YP, int WP, int HP, int cx, int cy);
+    
+public:
+  void page_policy(int p);
+  int page_policy(){return page_policy_;};
+  void close_command( int (*cmd)(FILE *)){close_cmd_=cmd;};
+  FILE * file() {return output;};
+  //void orientation (int o);
+  //Fl_PostScript_Graphics_Driver(FILE *o, int lang_level, int pages = 0); // ps (also multi-page) constructor
+  //Fl_PostScript_Graphics_Driver(FILE *o, int lang_level, int x, int y, int w, int h); //eps constructor
+  void interpolate(int i){interpolate_=i;};
+  int interpolate(){return interpolate_;}
+  
+  void page(double pw, double ph, int media = 0);
+  void page(int format);
+  
+  void place(double x, double y, double tx, double ty, double scale = 1);
+#endif // FL_DOXYGEN
+  Fl_PostScript_Graphics_Driver();
+  ~Fl_PostScript_Graphics_Driver();
+};
+
+/**
+ \brief To send graphical output to a PostScript file.
+ */
+class Fl_PostScript_File_Device : public Fl_Paged_Device {
+#ifdef __APPLE__
+  CGContextRef gc;
+#endif
+protected:
+  Fl_PostScript_Graphics_Driver *driver();
+public:
+  static const char *device_type;
+  Fl_PostScript_File_Device();
+  ~Fl_PostScript_File_Device();
+  int start_job(int pagecount, enum Fl_PostScript_Graphics_Driver::Page_Format format = Fl_PostScript_Graphics_Driver::A4, 
+		enum Fl_PostScript_Graphics_Driver::Page_Layout layout = Fl_PostScript_Graphics_Driver::PORTRAIT);
+  int start_job(FILE *ps_output, int pagecount, enum Fl_PostScript_Graphics_Driver::Page_Format format = Fl_PostScript_Graphics_Driver::A4, 
+		enum Fl_PostScript_Graphics_Driver::Page_Layout layout = Fl_PostScript_Graphics_Driver::PORTRAIT);
+  int start_page (void);
+  int printable_rect(int *w, int *h);
+  void margins(int *left, int *top, int *right, int *bottom);
+  void origin(int x, int y);
+  void scale (float scale_x, float scale_y);
+  void rotate(float angle);
+  void translate(int x, int y);
+  void untranslate(void);
+  int end_page (void);    
+  void end_job(void);
+#ifdef __APPLE__
+  void set_current() { fl_gc = gc; Fl_Paged_Device::set_current(); }
+#endif
+  
+  static const char *file_chooser_title; 
+};
+
+#endif // Fl_PostScript_H
+
+//
+// End of "$Id: Fl_PostScript.H 7556 2010-04-27 21:33:44Z manolo $"
+//