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1// ImageControl.hh for Fluxbox Window Manager
2// Copyright (c) 2001 - 2002 Henrik Kinnunen (fluxbox at linuxmail.org)
3//
4// from Image.hh for Blackbox - an X11 Window manager
5// Copyright (c) 1997 - 2000 Brad Hughes (bhughes at tcac.net)
6//
7// Permission is hereby granted, free of charge, to any person obtaining a
8// copy of this software and associated documentation files (the "Software"),
9// to deal in the Software without restriction, including without limitation
10// the rights to use, copy, modify, merge, publish, distribute, sublicense,
11// and/or sell copies of the Software, and to permit persons to whom the
12// Software is furnished to do so, subject to the following conditions:
13//
14// The above copyright notice and this permission notice shall be included in
15// all copies or substantial portions of the Software.
16//
17// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
22// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
23// DEALINGS IN THE SOFTWARE.
24
25// $Id: ImageControl.hh,v 1.3 2002/12/01 13:41:57 rathnor Exp $
26
27#ifndef IMAGECONTROL_HH
28#define IMAGECONTROL_HH
29
30#include "Texture.hh"
31#include "Timer.hh"
32
33#include <X11/Xlib.h>
34#include <X11/Xutil.h>
35#include <list>
36
37/**
38 Holds screen info and color tables
39*/
40class BImageControl : public TimeoutHandler {
41public:
42 BImageControl(int screen_num, bool dither = false, int colors_per_channel = 4,
43 unsigned long cache_timeout = 300000l, unsigned long cache_max = 200l);
44 virtual ~BImageControl();
45
46 inline bool doDither() const { return m_dither; }
47 inline int bitsPerPixel() const { return bits_per_pixel; }
48 inline int depth() const { return m_screen_depth; }
49 inline int colorsPerChannel() const { return m_colors_per_channel; }
50 int screenNum() const { return m_screen_num; }
51 Visual *visual() const { return m_visual; }
52 unsigned long getSqrt(unsigned int val) const;
53
54 /**
55 Render to pixmap
56 @param width width of pixmap
57 @param height height of pixmap
58 @param src_texture texture type to render
59 @return pixmap of the rendered image, on failure None
60 */
61 Pixmap renderImage(unsigned int width, unsigned int height,
62 const FbTk::Texture &src_texture);
63
64 void installRootColormap();
65 void removeImage(Pixmap thepix);
66 void colorTables(const unsigned char **, const unsigned char **, const unsigned char **,
67 int *, int *, int *, int *, int *, int *) const;
68 void getXColorTable(XColor **, int *);
69 void getGradientBuffers(unsigned int, unsigned int,
70 unsigned int **, unsigned int **);
71 void setDither(bool d) { m_dither = d; }
72 void setColorsPerChannel(int cpc);
73
74 virtual void timeout();
75
76private:
77 /**
78 Search cache for a specific pixmap
79 @return None if no cache was found
80 */
81 Pixmap searchCache(unsigned int width, unsigned int height, unsigned long texture_type,
82 const FbTk::Color &color, const FbTk::Color &color_to) const;
83
84 void createColorTable();
85 bool m_dither;
86
87 BTimer m_timer;
88
89 Colormap m_colormap;
90
91 Window m_root_window;
92
93 XColor *m_colors; ///< color table
94 unsigned int m_num_colors; ///< number of colors in color table
95
96 Visual *m_visual;
97
98 int bits_per_pixel, red_offset, green_offset, blue_offset,
99 red_bits, green_bits, blue_bits;
100 int m_colors_per_channel; ///< number of colors per channel
101 int m_screen_depth; ///< bit depth of screen
102 int m_screen_num; ///< screen number
103 unsigned char red_color_table[256], green_color_table[256],
104 blue_color_table[256];
105 unsigned int *grad_xbuffer, *grad_ybuffer, grad_buffer_width,
106 grad_buffer_height;
107
108 static unsigned long *sqrt_table; /// sqrt lookup table
109
110 typedef struct Cache {
111 Pixmap pixmap;
112
113 unsigned int count, width, height;
114 unsigned long pixel1, pixel2, texture;
115 } Cache;
116
117 unsigned long cache_max;
118 typedef std::list<Cache *> CacheList;
119
120 mutable CacheList cache;
121};
122
123
124#endif // IMAGECONTROL_HH
125