diff options
Diffstat (limited to 'FL/Fl_PostScript.H')
| -rw-r--r-- | FL/Fl_PostScript.H | 59 |
1 files changed, 58 insertions, 1 deletions
diff --git a/FL/Fl_PostScript.H b/FL/Fl_PostScript.H index 6d26490dc..ad6a6cd4a 100644 --- a/FL/Fl_PostScript.H +++ b/FL/Fl_PostScript.H @@ -3,7 +3,7 @@ // // Support for graphics output to PostScript file for the Fast Light Tool Kit (FLTK). // -// Copyright 2010-2019 by Bill Spitzak and others. +// Copyright 2010-2020 by Bill Spitzak and others. // // This library is free software. Distribution and use rights are outlined in // the file "COPYING" which should have been included with this file. If this @@ -206,6 +206,11 @@ public: // --- Fl_Bitmask create_bitmask(int w, int h, const uchar *array) { return 0L; } virtual int has_feature(driver_feature feature_mask) { return feature_mask & PRINTER; } + + int start_eps(int width, int height); + void ps_origin(int x, int y); + void ps_translate(int, int); + void ps_untranslate(); }; /** @@ -310,6 +315,58 @@ public: static const char *file_chooser_title; }; +/** Encapsulated PostScript drawing surface. + This drawing surface allows to store any FLTK graphics in vectorial form in an "Encapsulated PostScript" file. + \n Usage example: + \code + Fl_Window *win = ...// Window to draw to an .eps file + int ww = win->decorated_w(); + int wh = win->decorated_h(); + FILE *eps = fl_fopen("/path/to/mywindow.eps", "w"); + if (eps) { + Fl_EPS_File_Surface *surface = new Fl_EPS_File_Surface(ww, wh, eps, win->color()); + Fl_Surface_Device::push_current(surface); + surface->draw_decorated_window(win); + Fl_Surface_Device::pop_current(); + delete surface; // the .eps file is not complete until the destructor was run + fclose(eps); + } + \endcode + */ +class FL_EXPORT Fl_EPS_File_Surface : public Fl_Widget_Surface { +private: + void complete_(); +protected: + /** Returns the PostScript driver of this drawing surface. */ + inline Fl_PostScript_Graphics_Driver *driver() { return (Fl_PostScript_Graphics_Driver*)Fl_Surface_Device::driver(); } +public: + /** + Constructor. + \param width,height Width and height of the EPS drawing area + \param eps A writable FILE pointer where the Encapsulated PostScript data will be sent + \param background Color expected to cover the background of the EPS drawing area. + This parameter affects only the drawing of transparent Fl_RGB_Image objects: + transparent areas of RGB images are blended with the \p background color. + */ + Fl_EPS_File_Surface(int width, int height, FILE *eps, Fl_Color background = FL_WHITE); + /** + Destructor. + The underlying FILE pointer remains open after destruction of the Fl_EPS_File_Surface object + unless close() was called. + */ + ~Fl_EPS_File_Surface(); + virtual int printable_rect(int *w, int *h); + /** Returns the underlying FILE pointer */ + FILE *file() { return driver()->output; } + virtual void origin(int x, int y); + virtual void origin(int *px, int *py); + virtual void translate(int x, int y); + virtual void untranslate(); + /** Closes using fclose() the underlying FILE pointer. + The only operation possible with the Fl_EPS_File_Surface object after calling close() is its destruction. */ + int close(); +}; + #endif // Fl_PostScript_H // |