86 lines
3.6 KiB
C
86 lines
3.6 KiB
C
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/*
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* Copyright (c) 1993 Christian E. Hopps
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Christian E. Hopps.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#if ! defined (_GRF_VIEW_H)
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#define _GRF_VIEW_H
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/* removes the view if displaying */
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typedef void remove_view_func (view_t *v);
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/* free's the memory for this view and removes it if displaying */
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typedef void free_view_func (view_t *v);
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/* displays this view */
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typedef void display_view_func (view_t *v);
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/* returns mode of this view */
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typedef dmode_t *get_mode_func (view_t *v);
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/* fills in color map structure with requested registers */
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typedef int get_colormap_func (view_t *v, colormap_t *);
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/* sets this views colors according to the color map structure. */
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typedef int use_colormap_func (view_t *v, colormap_t *);
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struct view {
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bmap_t *bitmap; /* bitmap. */
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box_t display; /* viewable area. */
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void *data; /* view specific data. */
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/* functions */
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display_view_func *display_view; /* make this view active */
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remove_view_func *remove_view; /* remove this view if active */
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free_view_func *free_view; /* free this view */
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get_mode_func *get_display_mode; /* get the mode this view belongs to */
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get_colormap_func *get_colormap; /* get a color map for registers */
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use_colormap_func *use_colormap; /* use color map to load registers */
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};
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view_t * grf_alloc_view (dmode_t *d, dimen_t *dim, u_byte depth);
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void grf_display_view (view_t *v);
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void grf_remove_view (view_t *v);
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void grf_free_view (view_t *v);
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dmode_t *grf_get_display_mode (view_t *v);
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int grf_get_colormap (view_t *v, colormap_t *cm);
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int grf_use_colormap (view_t *v, colormap_t *cm);
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#define VDISPLAY_LINE(v, p, l) ((v)->bitmap->plane[p] +\
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(((v)->bitmap->bytes_per_row+(v)->bitmap->row_mod)*l))
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#endif /* _GRF_VIEW_H */
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