1 |
/*----------------------------------------------------------------------* |
2 |
* File: rxvtimg.h |
3 |
*----------------------------------------------------------------------* |
4 |
* |
5 |
* All portions of code are copyright by their respective author/s. |
6 |
* Copyright (c) 2012 Marc Lehmann <schmorp@schmorp.de> |
7 |
* Copyright (c) 2012 Emanuele Giaquinta <e.giaquinta@glauco.it> |
8 |
* |
9 |
* This program is free software; you can redistribute it and/or modify |
10 |
* it under the terms of the GNU General Public License as published by |
11 |
* the Free Software Foundation; either version 2 of the License, or |
12 |
* (at your option) any later version. |
13 |
* |
14 |
* This program is distributed in the hope that it will be useful, |
15 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
16 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
17 |
* GNU General Public License for more details. |
18 |
* |
19 |
* You should have received a copy of the GNU General Public License |
20 |
* along with this program; if not, write to the Free Software |
21 |
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
22 |
*---------------------------------------------------------------------*/ |
23 |
|
24 |
#ifndef IMG_H |
25 |
#define IMG_H |
26 |
|
27 |
#if HAVE_BG_PIXMAP |
28 |
#define HAVE_IMG 1 |
29 |
#endif |
30 |
|
31 |
#if HAVE_IMG |
32 |
|
33 |
#define float_to_component(d) (int32_t)((d) * 65535.99) |
34 |
|
35 |
#include <X11/extensions/Xrender.h> |
36 |
|
37 |
struct rxvt_img |
38 |
{ |
39 |
typedef double nv; |
40 |
|
41 |
// *could* also hold the Pixmap itself |
42 |
struct pixref |
43 |
{ |
44 |
int cnt; |
45 |
int w, h; |
46 |
bool ours; // false if we don't own the pixmap at all |
47 |
|
48 |
pixref (int w, int h) |
49 |
: cnt(1), w(w), h(h), ours(true) |
50 |
{ |
51 |
} |
52 |
}; |
53 |
|
54 |
rxvt_screen *s; |
55 |
Pixmap pm; |
56 |
pixref *ref; // shared refcnt |
57 |
int x, y, w, h, repeat; |
58 |
XRenderPictFormat *format; |
59 |
|
60 |
rxvt_img (rxvt_screen *screen, XRenderPictFormat *format, int x, int y, int width, int height, int repeat = RepeatNormal); |
61 |
rxvt_img (const rxvt_img &img); |
62 |
void alloc (); |
63 |
|
64 |
# if HAVE_PIXBUF |
65 |
static rxvt_img *new_from_pixbuf (rxvt_screen *s, GdkPixbuf *pb); // from pixbuf |
66 |
static rxvt_img *new_from_file (rxvt_screen *s, const char *filename); // via pixbuf |
67 |
# endif |
68 |
static rxvt_img *new_from_root (rxvt_screen *s); // get root pixmap |
69 |
|
70 |
~rxvt_img (); |
71 |
|
72 |
Pixmap steal () |
73 |
{ |
74 |
ref->ours = false; |
75 |
return pm; |
76 |
} |
77 |
|
78 |
// inplace |
79 |
void move (int dx, int dy) |
80 |
{ |
81 |
x += dx; |
82 |
y += dy; |
83 |
} |
84 |
|
85 |
void repeat_mode (int repeat) |
86 |
{ |
87 |
this->repeat = repeat; |
88 |
} |
89 |
|
90 |
void unshare (); // prepare for write |
91 |
void fill (const rgba &c); |
92 |
void add_alpha (); |
93 |
//void linear_gradient (const XLinearGradient *gradient, const XFixed *stops, const XRenderColor *colors, int nstops); |
94 |
//void radial_gradient (const XRadialGradient *gradient, const XFixed *stops, const XRenderColor *colors, int nstops); |
95 |
//void conical_gradient (const XConicalGradient *gradient, const XFixed *stops, const XRenderColor *colors, int nstops); |
96 |
void brightness (int32_t r, int32_t g, int32_t b, int32_t a); |
97 |
void contrast (int32_t r, int32_t g, int32_t b, int32_t a); |
98 |
|
99 |
void brightness (nv r, nv g, nv b, nv a = 1.) |
100 |
{ |
101 |
brightness (float_to_component (r), |
102 |
float_to_component (g), |
103 |
float_to_component (b), |
104 |
float_to_component (a)); |
105 |
} |
106 |
|
107 |
void contrast (nv r, nv g, nv b, nv a = 1.) |
108 |
{ |
109 |
contrast (float_to_component (r), |
110 |
float_to_component (g), |
111 |
float_to_component (b), |
112 |
float_to_component (a)); |
113 |
} |
114 |
|
115 |
void draw (rxvt_img *img, int op = PictOpOver, nv mask = 1.); |
116 |
#if 0 |
117 |
void draw (rxvt_img *img, int op = PictOpOver, nv mask = 1., |
118 |
nv px, nv py, nv qx, nv qy, nv rx, nv ry, nv sx, nv sy); |
119 |
#endif |
120 |
|
121 |
// copy |
122 |
rxvt_img *reify (); // make x, y 0, make real width/height |
123 |
rxvt_img *blur (int rh, int rv); |
124 |
rxvt_img *clone (); |
125 |
rxvt_img *sub_rect (int x, int y, int width, int height); |
126 |
rxvt_img *transform (const nv matrix[3][3]); |
127 |
rxvt_img *scale (int new_width, int new_height); |
128 |
rxvt_img *rotate (int cx, int cy, nv phi); |
129 |
rxvt_img *convert_format (XRenderPictFormat *format, const rgba &bg); |
130 |
rxvt_img *blend (rxvt_img *img, nv factor = 1.); |
131 |
|
132 |
// egregiuous helper category |
133 |
rxvt_img *replace (rxvt_img *&p) |
134 |
{ |
135 |
delete p; |
136 |
p = this; |
137 |
return this; |
138 |
} |
139 |
|
140 |
private: |
141 |
|
142 |
void destroy (); |
143 |
Picture picture (); |
144 |
rxvt_img *transform (const nv *matrix); |
145 |
}; |
146 |
|
147 |
#endif |
148 |
|
149 |
#endif |
150 |
|