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// 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.
#ifndef FBTK_IMAGECONTROL_HH
#define FBTK_IMAGECONTROL_HH
#include "Orientation.hh"
#include "Timer.hh"
#include "NotCopyable.hh"
#include <X11/Xlib.h> // for Visual* etc
#include <list>
namespace FbTk {
class Texture;
/// Holds screen info, color tables and caches textures
class ImageControl: private NotCopyable {
public:
ImageControl(int screen_num, int colors_per_channel = 4,
unsigned long cache_timeout = 300000l, unsigned long cache_max = 200l);
virtual ~ImageControl();
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
@param orient Orientation of the texture.
@param use_cache whether or not to use cache
@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,
bool use_cache = true);
void installRootColormap();
void removeImage(Pixmap thepix);
void colorTables(const unsigned char **, const unsigned char **, const unsigned char **,
int *, int *, int *, int *, int *, int *) const;
void getGradientBuffers(unsigned int, unsigned int,
unsigned int **, unsigned int **);
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];
unsigned char green_color_table[256];
unsigned char blue_color_table[256];
unsigned int *grad_xbuffer, *grad_ybuffer, grad_buffer_width,
grad_buffer_height;
struct Cache;
typedef std::list<Cache *> CacheList;
mutable CacheList cache;
unsigned long cache_max;
};
} // end namespace FbTk
#endif // FBTK_IMAGECONTROL_HH
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