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103 lines
2.5 KiB
C
103 lines
2.5 KiB
C
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/*
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copyright 2002 Alexander Malmberg <alexander@malmberg.org>
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This file is part of GNUstep.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with this library; if not, write to the Free
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Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef ARTWindowBuffer_h
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#define ARTWindowBuffer_h
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#include <X11/extensions/XShm.h>
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/*
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ARTWindowBuffer maintains an XImage for a window. Each ARTGState that
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renders to that window uses the same WinImage (and thus the same buffer,
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etc.).
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Many states might render to the same window, so we need to make sure
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that there's only one WinImage for each window. */
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@interface ARTWindowBuffer : NSObject
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{
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@public
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#ifdef RDS
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int window;
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RDSClient *remote;
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struct
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{
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int shmid;
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char *shmaddr;
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} shminfo;
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#else
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gswindow_device_t *window;
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GC gc;
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Drawable drawable;
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XImage *ximage;
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Display *display;
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int use_shm;
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XShmSegmentInfo shminfo;
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#endif
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/* While a XShmPutImage is in progress we don't try to call it
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again. The pending updates are stored here, and when we get the
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ShmCompletion event, we handle them. */
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int pending_put; /* There are pending updates */
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NSRect pending_rect; /* in this rectangle. */
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int pending_event; /* We're waiting for the ShmCompletion event. */
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unsigned char *data;
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int sx, sy;
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int bytes_per_line, bits_per_pixel, bytes_per_pixel;
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/* If has_alpha is 1 and alpha is NULL, the alpha is stored in data
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somehow. The drawing mechanism code should know how to deal with
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it. */
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unsigned char *alpha;
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int has_alpha;
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unsigned char *old_shape;
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int old_shape_size;
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}
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#ifdef RDS
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+ artWindowBufferForWindow: (int)awindow remote: (RDSClient *)remote;
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#else
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+ artWindowBufferForWindow: (gswindow_device_t *)awindow;
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#endif
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-(void) needsAlpha;
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-(void) _gotShmCompletion;
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-(void) _exposeRect: (NSRect)r;
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+(void) initializeBackendWithDrawInfo: (draw_info_t *)d;
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#ifndef RDS
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+(void) _gotShmCompletion: (Drawable)d;
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#endif
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@end
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#endif
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