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//
// Support for Cairo graphics for the Fast Light Tool Kit (FLTK).
//
// Copyright 2021 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
// file is missing or damaged, see the license at:
//
// https://www.fltk.org/COPYING.php
//
// Please see the following page on how to report bugs and issues:
//
// https://www.fltk.org/bugs.php
//
/* \file
Declaration of class Fl_Cairo_Graphics_Driver.
*/
#ifndef FL_CAIRO_GRAPHICS_DRIVER_H
# define FL_CAIRO_GRAPHICS_DRIVER_H
#include <FL/Fl_Graphics_Driver.H>
typedef struct _cairo cairo_t;
typedef struct _PangoLayout PangoLayout;
typedef struct _PangoFontDescription PangoFontDescription;
class FL_EXPORT Fl_Cairo_Graphics_Driver : public Fl_Graphics_Driver {
protected:
cairo_t *cairo_;
PangoLayout *pango_layout_;
void draw_rgb_bitmap_(Fl_Image *img,int XP, int YP, int WP, int HP, int cx, int cy);
public:
Fl_Cairo_Graphics_Driver();
virtual ~Fl_Cairo_Graphics_Driver();
enum SHAPE {NONE=0, LINE, LOOP, POLYGON, POINTS};
class Clip {
public:
int x, y, w, h;
Clip *prev;
};
Clip * clip_;
int gap_;
cairo_t *cr() { return cairo_; }
PangoLayout *pango_layout() {return pango_layout_;}
void check_status(void);
enum SHAPE shape_;
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();
float scale_x;
float scale_y;
float angle;
int left_margin;
int top_margin;
void transformed_draw(const char* s, int n, double x, double y); //precise text placing
// implementation of drawing methods
void color(Fl_Color c);
void color(uchar r, uchar g, uchar b);
Fl_Color color();
void push_clip(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 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 draw_image_mono(const uchar* d, int x,int y,int w,int h, int delta=1, int ld=0);
void draw_image(Fl_Draw_Image_Cb call, void* data, int x,int y, int w, int h, int delta=3);
void draw_image_mono(Fl_Draw_Image_Cb call, void* data, int x,int y, int w, int h, int delta=1);
void draw(const char* s, int nBytes, int x, int y) { transformed_draw(s,nBytes,x,y); }
void draw(const char* s, int nBytes, float x, float y) { transformed_draw(s,nBytes,x,y); }
void draw(int angle, const char *str, int n, int x, int y);
void rtl_draw(const char* s, int n, int x, int y);
void draw_pixmap(Fl_Pixmap * pxm,int XP, int YP, int WP, int HP, int cx, int cy);
void draw_bitmap(Fl_Bitmap * bitmap,int XP, int YP, int WP, int HP, int cx, int cy);
void draw_rgb(Fl_RGB_Image * rgb,int XP, int YP, int WP, int HP, int cx, int cy);
// ---
Fl_Bitmask create_bitmask(int /*w*/, int /*h*/, const uchar */*array*/) { return 0L; }
void ps_origin(int x, int y);
void ps_translate(int, int);
void ps_untranslate();
};
#endif // FL_CAIRO_GRAPHICS_DRIVER_H
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