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 picture ();

public:
  typedef double nv;

  // *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 (nv r, nv g, nv b, nv a = 1.)
  {
    brightness (float_to_component (r),
                float_to_component (g),
                float_to_component (b),
                float_to_component (a));
  }

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

  void draw (rxvt_img *img, int op = PictOpSrc, nv mask = 1.);

  // 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 (nv matrix[3][3]);
  rxvt_img *scale (int new_width, int new_height);
  rxvt_img *rotate (int cx, int cy, nv phi);
  rxvt_img *convert_format (XRenderPictFormat *format, const rgba &bg);
  rxvt_img *blend (rxvt_img *img, nv factor = 1.);

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

#endif

#endif

Revision:	1.37
Committed:	Thu Jun 14 18:59:39 2012 UTC (11 years, 11 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.36:	+3 -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	1.37	Picture picture ();
18	root	1.17
19			public:
20	root	1.36	typedef double nv;
21
22	root	1.19	// could also hold the Pixmap itself
23			struct pixref
24			{
25			int cnt;
26			int w, h;
27			bool ours; // false if we don't own the pixmap at all
28
29			pixref (int w, int h)
30			: cnt(1), w(w), h(h), ours(true)
31			{
32			}
33			};
34
35	root	1.1	rxvt_screen *s;
36			Pixmap pm;
37	root	1.19	pixref *ref; // shared refcnt
38	root	1.15	int x, y, w, h, repeat;
39	root	1.1	XRenderPictFormat *format;
40
41	root	1.21	rxvt_img (rxvt_screen screen, XRenderPictFormat format, int x, int y, int width, int height, int repeat = RepeatNormal);
42	root	1.17	rxvt_img (const rxvt_img &img);
43	root	1.30	void alloc ();
44	root	1.17
45	sf-exg	1.29	# if HAVE_PIXBUF
46	root	1.23	static rxvt_img new_from_pixbuf (rxvt_screen s, GdkPixbuf *pb); // from pixbuf
47			static rxvt_img new_from_file (rxvt_screen s, const char *filename); // via pixbuf
48	sf-exg	1.29	# endif
49	root	1.5	static rxvt_img new_from_root (rxvt_screen s); // get root pixmap
50	root	1.4
51	root	1.1	~rxvt_img ();
52
53			Pixmap steal ()
54			{
55	root	1.19	ref->ours = false;
56			return pm;
57	root	1.1	}
58
59			// inplace
60	root	1.15	void move (int dx, int dy)
61			{
62	root	1.20	x -= dx;
63			y -= dy;
64	root	1.15	}
65
66			void repeat_mode (int repeat)
67			{
68			this->repeat = repeat;
69			}
70
71	root	1.17	void unshare (); // prepare for write
72	root	1.33	void fill (const rgba &c);
73	root	1.34	void add_alpha ();
74	root	1.26	//void linear_gradient (const XLinearGradient gradient, const XFixed stops, const XRenderColor *colors, int nstops);
75			//void radial_gradient (const XRadialGradient gradient, const XFixed stops, const XRenderColor *colors, int nstops);
76			//void conical_gradient (const XConicalGradient gradient, const XFixed stops, const XRenderColor *colors, int nstops);
77	root	1.28	void brightness (int32_t r, int32_t g, int32_t b, int32_t a);
78			void contrast (int32_t r, int32_t g, int32_t b, int32_t a);
79	sf-exg	1.16
80	root	1.36	void brightness (nv r, nv g, nv b, nv a = 1.)
81	sf-exg	1.16	{
82			brightness (float_to_component (r),
83			float_to_component (g),
84			float_to_component (b),
85			float_to_component (a));
86			}
87
88	root	1.36	void contrast (nv r, nv g, nv b, nv a = 1.)
89	sf-exg	1.16	{
90			contrast (float_to_component (r),
91			float_to_component (g),
92			float_to_component (b),
93			float_to_component (a));
94			}
95
96	root	1.37	void draw (rxvt_img *img, int op = PictOpSrc, nv mask = 1.);
97
98	root	1.1	// copy
99	root	1.18	rxvt_img *reify (); // make x, y 0, make real width/height
100	sf-exg	1.12	rxvt_img *blur (int rh, int rv);
101	root	1.8	rxvt_img *clone ();
102	root	1.15	rxvt_img *sub_rect (int x, int y, int width, int height);
103	root	1.36	rxvt_img *transform (nv matrix[3][3]);
104	root	1.1	rxvt_img *scale (int new_width, int new_height);
105	root	1.36	rxvt_img *rotate (int cx, int cy, nv phi);
106	root	1.33	rxvt_img convert_format (XRenderPictFormat format, const rgba &bg);
107	root	1.36	rxvt_img blend (rxvt_img img, nv factor = 1.);
108	root	1.27
109			// egregiuous helper category
110			rxvt_img replace (rxvt_img &p)
111			{
112			delete p;
113			p = this;
114			return this;
115			}
116	root	1.1	};
117
118			#endif
119
120			#endif
121