rxvt-unicode/src/rxvtimg.h

#ifndef IMG_H
#define IMG_H

#if HAVE_BG_PIXMAP
  #define HAVE_IMG 1
#endif

#if HAVE_IMG

#define float_to_component(d) (int32_t)((d) * 65535.99)

#include <X11/extensions/Xrender.h>

class rxvt_img
{
  void destroy ();
  Picture src_picture ();

public:
  // *could* also hold the Pixmap itself
  struct pixref
  {
    int cnt;
    int w, h;
    bool ours; // false if we don't own the pixmap at all

    pixref (int w, int h)
    : cnt(1), w(w), h(h), ours(true)
    {
    }
  };

  rxvt_screen *s;
  Pixmap pm;
  pixref *ref; // shared refcnt
  int x, y, w, h, repeat;
  XRenderPictFormat *format;

  rxvt_img (rxvt_screen *screen, XRenderPictFormat *format, int x, int y, int width, int height, int repeat = RepeatNormal);
  rxvt_img (const rxvt_img &img);
  void alloc ();

# if HAVE_PIXBUF
  static rxvt_img *new_from_pixbuf (rxvt_screen *s, GdkPixbuf *pb); // from pixbuf
  static rxvt_img *new_from_file (rxvt_screen *s, const char *filename); // via pixbuf
# endif
  static rxvt_img *new_from_root (rxvt_screen *s); // get root pixmap

  ~rxvt_img ();

  Pixmap steal ()
  {
    ref->ours = false;
    return pm;
  }

  // inplace
  void move (int dx, int dy)
  {
    x -= dx;
    y -= dy;
  }

  void repeat_mode (int repeat)
  {
    this->repeat = repeat;
  }

  void unshare (); // prepare for write
  void fill (const rgba &c);
  void add_alpha ();
  //void linear_gradient  (const XLinearGradient  *gradient, const XFixed *stops, const XRenderColor *colors, int nstops);
  //void radial_gradient  (const XRadialGradient  *gradient, const XFixed *stops, const XRenderColor *colors, int nstops);
  //void conical_gradient (const XConicalGradient *gradient, const XFixed *stops, const XRenderColor *colors, int nstops);
  void brightness (int32_t r, int32_t g, int32_t b, int32_t a);
  void contrast (int32_t r, int32_t g, int32_t b, int32_t a);

  void brightness (double r, double g, double b, double a = 1.)
  {
    brightness (float_to_component (r),
                float_to_component (g),
                float_to_component (b),
                float_to_component (a));
  }

  void contrast (double r, double g, double b, double a = 1.)
  {
    contrast (float_to_component (r),
              float_to_component (g),
              float_to_component (b),
              float_to_component (a));
  }

  // copy
  rxvt_img *reify (); // make x, y 0, make real width/height
  rxvt_img *blur (int rh, int rv);
  rxvt_img *clone ();
  rxvt_img *sub_rect (int x, int y, int width, int height);
  rxvt_img *transform (double matrix[3][3]);
  rxvt_img *scale (int new_width, int new_height);
  rxvt_img *rotate (int cx, int cy, double phi);
  rxvt_img *convert_format (XRenderPictFormat *format, const rgba &bg);
  rxvt_img *blend (rxvt_img *img, double factor = 1.);

  // egregiuous helper category
  rxvt_img *replace (rxvt_img *&p)
  {
    delete p;
    p = this;
    return this;
  }
};

#endif

#endif

Revision:	1.35
Committed:	Thu Jun 14 18:13:18 2012 UTC (11 years, 11 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.34:	+1 -1 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.1	#ifndef IMG_H
2			#define IMG_H
3
4	sf-exg	1.29	#if HAVE_BG_PIXMAP
5	root	1.1	#define HAVE_IMG 1
6			#endif
7
8			#if HAVE_IMG
9
10	root	1.28	#define float_to_component(d) (int32_t)((d) * 65535.99)
11	sf-exg	1.16
12	root	1.1	#include <X11/extensions/Xrender.h>
13
14	root	1.17	class rxvt_img
15	root	1.1	{
16	root	1.17	void destroy ();
17	root	1.19	Picture src_picture ();
18	root	1.17
19			public:
20	root	1.19	// could also hold the Pixmap itself
21			struct pixref
22			{
23			int cnt;
24			int w, h;
25			bool ours; // false if we don't own the pixmap at all
26
27			pixref (int w, int h)
28			: cnt(1), w(w), h(h), ours(true)
29			{
30			}
31			};
32
33	root	1.1	rxvt_screen *s;
34			Pixmap pm;
35	root	1.19	pixref *ref; // shared refcnt
36	root	1.15	int x, y, w, h, repeat;
37	root	1.1	XRenderPictFormat *format;
38
39	root	1.21	rxvt_img (rxvt_screen screen, XRenderPictFormat format, int x, int y, int width, int height, int repeat = RepeatNormal);
40	root	1.17	rxvt_img (const rxvt_img &img);
41	root	1.30	void alloc ();
42	root	1.17
43	sf-exg	1.29	# if HAVE_PIXBUF
44	root	1.23	static rxvt_img new_from_pixbuf (rxvt_screen s, GdkPixbuf *pb); // from pixbuf
45			static rxvt_img new_from_file (rxvt_screen s, const char *filename); // via pixbuf
46	sf-exg	1.29	# endif
47	root	1.5	static rxvt_img new_from_root (rxvt_screen s); // get root pixmap
48	root	1.4
49	root	1.1	~rxvt_img ();
50
51			Pixmap steal ()
52			{
53	root	1.19	ref->ours = false;
54			return pm;
55	root	1.1	}
56
57			// inplace
58	root	1.15	void move (int dx, int dy)
59			{
60	root	1.20	x -= dx;
61			y -= dy;
62	root	1.15	}
63
64			void repeat_mode (int repeat)
65			{
66			this->repeat = repeat;
67			}
68
69	root	1.17	void unshare (); // prepare for write
70	root	1.33	void fill (const rgba &c);
71	root	1.34	void add_alpha ();
72	root	1.26	//void linear_gradient (const XLinearGradient gradient, const XFixed stops, const XRenderColor *colors, int nstops);
73			//void radial_gradient (const XRadialGradient gradient, const XFixed stops, const XRenderColor *colors, int nstops);
74			//void conical_gradient (const XConicalGradient gradient, const XFixed stops, const XRenderColor *colors, int nstops);
75	root	1.28	void brightness (int32_t r, int32_t g, int32_t b, int32_t a);
76			void contrast (int32_t r, int32_t g, int32_t b, int32_t a);
77	sf-exg	1.16
78			void brightness (double r, double g, double b, double a = 1.)
79			{
80			brightness (float_to_component (r),
81			float_to_component (g),
82			float_to_component (b),
83			float_to_component (a));
84			}
85
86			void contrast (double r, double g, double b, double a = 1.)
87			{
88			contrast (float_to_component (r),
89			float_to_component (g),
90			float_to_component (b),
91			float_to_component (a));
92			}
93
94	root	1.1	// copy
95	root	1.18	rxvt_img *reify (); // make x, y 0, make real width/height
96	sf-exg	1.12	rxvt_img *blur (int rh, int rv);
97	root	1.8	rxvt_img *clone ();
98	root	1.15	rxvt_img *sub_rect (int x, int y, int width, int height);
99	root	1.32	rxvt_img *transform (double matrix[3][3]);
100	root	1.1	rxvt_img *scale (int new_width, int new_height);
101	root	1.32	rxvt_img *rotate (int cx, int cy, double phi);
102	root	1.33	rxvt_img convert_format (XRenderPictFormat format, const rgba &bg);
103	root	1.35	rxvt_img blend (rxvt_img img, double factor = 1.);
104	root	1.27
105			// egregiuous helper category
106			rxvt_img replace (rxvt_img &p)
107			{
108			delete p;
109			p = this;
110			return this;
111			}
112	root	1.1	};
113
114			#endif
115
116			#endif
117