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Diffstat (limited to 'contrib/gdk-pixbuf-xlib/gdk-pixbuf-xlibrgb.h')
| -rw-r--r-- | contrib/gdk-pixbuf-xlib/gdk-pixbuf-xlibrgb.h | 211 |
1 files changed, 211 insertions, 0 deletions
diff --git a/contrib/gdk-pixbuf-xlib/gdk-pixbuf-xlibrgb.h b/contrib/gdk-pixbuf-xlib/gdk-pixbuf-xlibrgb.h new file mode 100644 index 0000000..f838ea8 --- /dev/null +++ b/contrib/gdk-pixbuf-xlib/gdk-pixbuf-xlibrgb.h @@ -0,0 +1,211 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- + * + * The contents of this file are subject to the Mozilla Public License + * Version 1.1 (the "MPL"); you may not use this file except in + * compliance with the MPL. You may obtain a copy of the MPL at + * http://www.mozilla.org/MPL/ + * + * Software distributed under the MPL is distributed on an "AS IS" basis, + * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the MPL + * for the specific language governing rights and limitations under the + * MPL. + * + * Alternatively, the contents of this file may be used under the + * terms of the GNU Library General Public License (the "LGPL"), in + * which case the provisions of the LGPL are applicable instead of + * those above. If you wish to allow use of your version of this file + * only under the terms of the LGPL and not to allow others to use + * your version of this file under the MPL, indicate your decision by + * deleting the provisions above and replace them with the notice and + * other provisions required by the LGPL. If you do not delete the + * provisions above, a recipient may use your version of this file + * under either the MPL or the LGPL. + */ + +/* + * This code is derived from GdkRgb. + * For more information on GdkRgb, see http://www.levien.com/gdkrgb/ + * Raph Levien <raph@acm.org> + */ + +/* Ported by Christopher Blizzard to Xlib. With permission from the + * original authors of this file, the contents of this file are also + * redistributable under the terms of the Mozilla Public license. For + * information about the Mozilla Public License, please see the + * license information at http://www.mozilla.org/MPL/ + */ + +/* This code is copyright the following authors: + * Raph Levien <raph@acm.org> + * Manish Singh <manish@gtk.org> + * Tim Janik <timj@gtk.org> + * Peter Mattis <petm@xcf.berkeley.edu> + * Spencer Kimball <spencer@xcf.berkeley.edu> + * Josh MacDonald <jmacd@xcf.berkeley.edu> + * Christopher Blizzard <blizzard@redhat.com> + * Owen Taylor <otaylor@redhat.com> + * Shawn T. Amundson <amundson@gtk.org> +*/ + + +#ifndef __XLIB_RGB_H__ +#define __XLIB_RGB_H__ + +#include <glib.h> + +G_BEGIN_DECLS + +#include <X11/Xlib.h> +#include <X11/Xutil.h> + +/** + * XlibRgbCmap: + * @colors: FIXME. + * @lut: FIXME. + * + * FIXME: Describe this. + */ +typedef struct _XlibRgbCmap XlibRgbCmap; +struct _XlibRgbCmap { + unsigned int colors[256]; + unsigned char lut[256]; /* for 8-bit modes */ +}; + +void +xlib_rgb_init (Display *display, Screen *screen); +void +xlib_rgb_init_with_depth (Display *display, Screen *screen, int prefDepth); + +unsigned long +xlib_rgb_xpixel_from_rgb (guint32 rgb); + +void +xlib_rgb_gc_set_foreground (GC gc, guint32 rgb); + +void +xlib_rgb_gc_set_background (GC gc, guint32 rgb); + +/** + * XlibRgbDither: + * @XLIB_RGB_DITHER_NONE: Specifies no dithering. + * @XLIB_RGB_DITHER_NORMAL: Specifies dithering only on pseudocolor + * displays. + * @XLIB_RGB_DITHER_MAX: Specifies dithering on high color displays. + * + * These values are used to specify which dithering method should be + * used. <symbol>XLIB_RGB_DITHER_NONE</symbol> will use no dithering + * and simply map the colors in an RGB buffer to the closest colors + * that the display can provide. + * <symbol>XLIB_RGB_DITHER_NORMAL</symbol> will provide dithering + * only on pseudocolor displays. + * <symbol>XLIB_RGB_DITHER_MAX</symbol> will provide dithering on + * pseudocolor and 16-bit truecolor or “high color” + * displays. + */ +typedef enum +{ + XLIB_RGB_DITHER_NONE, + XLIB_RGB_DITHER_NORMAL, + XLIB_RGB_DITHER_MAX +} XlibRgbDither; + +void +xlib_draw_rgb_image (Drawable drawable, + GC gc, + int x, + int y, + int width, + int height, + XlibRgbDither dith, + unsigned char *rgb_buf, + int rowstride); + +void +xlib_draw_rgb_image_dithalign (Drawable drawable, + GC gc, + int x, + int y, + int width, + int height, + XlibRgbDither dith, + unsigned char *rgb_buf, + int rowstride, + int xdith, + int ydith); + +void +xlib_draw_rgb_32_image (Drawable drawable, + GC gc, + int x, + int y, + int width, + int height, + XlibRgbDither dith, + unsigned char *buf, + int rowstride); + +void +xlib_draw_gray_image (Drawable drawable, + GC gc, + int x, + int y, + int width, + int height, + XlibRgbDither dith, + unsigned char *buf, + int rowstride); + +XlibRgbCmap * +xlib_rgb_cmap_new (guint32 *colors, int n_colors); + +void +xlib_rgb_cmap_free (XlibRgbCmap *cmap); + +void +xlib_draw_indexed_image (Drawable drawable, + GC gc, + int x, + int y, + int width, + int height, + XlibRgbDither dith, + unsigned char *buf, + int rowstride, + XlibRgbCmap *cmap); + +/* Below are some functions which are primarily useful for debugging + and experimentation. */ +Bool +xlib_rgb_ditherable (void); + +void +xlib_rgb_set_verbose (Bool verbose); + +/* experimental colormap stuff */ +void +xlib_rgb_set_install (Bool install); + +void +xlib_rgb_set_min_colors (int min_colors); + +Colormap +xlib_rgb_get_cmap (void); + +Visual * +xlib_rgb_get_visual (void); + +XVisualInfo * +xlib_rgb_get_visual_info (void); + +int +xlib_rgb_get_depth (void); + +Display * +xlib_rgb_get_display (void); + +Screen * +xlib_rgb_get_screen (void); + +G_END_DECLS + +#endif /* __XLIB_RGB_H__ */ |