1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
|
// ImageControl.hh for FbTk - Fluxbox Toolkit
// Copyright (c) 2001 - 2003 Henrik Kinnunen (fluxbox at users.sourceforge.net)
//
// from Image.hh for Blackbox - an X11 Window manager
// Copyright (c) 1997 - 2000 Brad Hughes (bhughes at tcac.net)
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
// $Id$
#ifndef FBTK_IMAGECONTROL_HH
#define FBTK_IMAGECONTROL_HH
// actually, Text is rather tool like, that's where orientation comes from
#include "Text.hh"
#include "Texture.hh"
#include "Timer.hh"
#include "NotCopyable.hh"
#include <X11/Xlib.h>
#include <list>
namespace FbTk {
/// Holds screen info, color tables and caches textures
class ImageControl: private NotCopyable {
public:
ImageControl(int screen_num, bool dither = false, int colors_per_channel = 4,
unsigned long cache_timeout = 300000l, unsigned long cache_max = 200l);
virtual ~ImageControl();
bool doDither() const { return m_dither; }
#ifdef NOT_USED
int bitsPerPixel() const { return bits_per_pixel; }
#endif
int depth() const { return m_screen_depth; }
int colorsPerChannel() const { return m_colors_per_channel; }
int screenNumber() const { return m_screen_num; }
Visual *visual() const { return m_visual; }
unsigned long getSqrt(unsigned int val) const;
/**
Render to pixmap
@param width width of pixmap
@param height height of pixmap
@param src_texture texture type to render
@return pixmap of the rendered image, on failure None
*/
Pixmap renderImage(unsigned int width, unsigned int height,
const FbTk::Texture &src_texture,
Orientation orient = ROT0);
void installRootColormap();
void removeImage(Pixmap thepix);
void colorTables(const unsigned char **, const unsigned char **, const unsigned char **,
int *, int *, int *, int *, int *, int *) const;
#ifdef NOT_USED
void getXColorTable(XColor **, int *);
#endif
void getGradientBuffers(unsigned int, unsigned int,
unsigned int **, unsigned int **);
void setDither(bool d) { m_dither = d; }
#ifdef NOT_USED
void setColorsPerChannel(int cpc);
#endif
void cleanCache();
private:
/**
Search cache for a specific pixmap
@return None if no cache was found
*/
Pixmap searchCache(unsigned int width, unsigned int height, const Texture &text, Orientation orient) const;
void createColorTable();
bool m_dither;
Timer m_timer;
Colormap m_colormap;
Window m_root_window;
XColor *m_colors; ///< color table
unsigned int m_num_colors; ///< number of colors in color table
Visual *m_visual;
int bits_per_pixel, red_offset, green_offset, blue_offset,
red_bits, green_bits, blue_bits;
int m_colors_per_channel; ///< number of colors per channel
int m_screen_depth; ///< bit depth of screen
int m_screen_num; ///< screen number
unsigned char red_color_table[256], green_color_table[256],
blue_color_table[256];
unsigned int *grad_xbuffer, *grad_ybuffer, grad_buffer_width,
grad_buffer_height;
static unsigned long *sqrt_table; /// sqrt lookup table
typedef struct Cache {
Pixmap pixmap;
Pixmap texture_pixmap;
Orientation orient;
unsigned int count, width, height;
unsigned long pixel1, pixel2, texture;
} Cache;
struct ltCacheEntry {
bool operator()(const Cache* s1, const Cache* s2) const {
return (s1->orient < s2->orient || s1->orient == s2->orient
&& (s1->width < s2->width || s1->width == s2->width
&& (s1->height < s2->height || s1->height == s2->height
&& (s1->texture < s2->texture || s1->texture == s2->texture
&& (s1->pixel1 < s2->pixel1 || s1->pixel1 == s2->pixel1
&& ((s1->texture & FbTk::Texture::GRADIENT) && s1->pixel2 < s2->pixel2)
)))));
}
};
unsigned long cache_max;
typedef std::list<Cache *> CacheList;
mutable CacheList cache;
static bool s_timed_cache;
};
} // end namespace FbTk
#endif // FBTK_IMAGECONTROL_HH
|
