| 1 | /*
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| 2 | * Copyright © 2007 Keith Packard
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| 3 | *
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| 4 | * Permission to use, copy, modify, distribute, and sell this software and its
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| 5 | * documentation for any purpose is hereby granted without fee, provided that
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| 6 | * the above copyright notice appear in all copies and that both that copyright
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| 7 | * notice and this permission notice appear in supporting documentation, and
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| 8 | * that the name of the copyright holders not be used in advertising or
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| 9 | * publicity pertaining to distribution of the software without specific,
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| 10 | * written prior permission. The copyright holders make no representations
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| 11 | * about the suitability of this software for any purpose. It is provided "as
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| 12 | * is" without express or implied warranty.
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| 13 | *
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| 14 | * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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| 15 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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| 16 | * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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| 17 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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| 18 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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| 19 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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| 20 | * OF THIS SOFTWARE.
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| 21 | */
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| 22 |
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| 23 | #ifndef _RRTRANSFORM_H_
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| 24 | #define _RRTRANSFORM_H_
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| 25 |
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| 26 | #include <X11/extensions/randr.h>
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| 27 | #include "picturestr.h"
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| 28 |
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| 29 | typedef struct _rrTransform RRTransformRec, *RRTransformPtr;
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| 30 |
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| 31 | struct _rrTransform {
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| 32 | PictTransform transform;
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| 33 | struct pict_f_transform f_transform;
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| 34 | struct pict_f_transform f_inverse;
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| 35 | PictFilterPtr filter;
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| 36 | xFixed *params;
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| 37 | int nparams;
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| 38 | int width;
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| 39 | int height;
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| 40 | };
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| 41 |
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| 42 | extern _X_EXPORT void
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| 43 | RRTransformInit(RRTransformPtr transform);
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| 44 |
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| 45 | extern _X_EXPORT void
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| 46 | RRTransformFini(RRTransformPtr transform);
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| 47 |
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| 48 | extern _X_EXPORT Bool
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| 49 | RRTransformEqual(RRTransformPtr a, RRTransformPtr b);
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| 50 |
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| 51 | extern _X_EXPORT Bool
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| 52 |
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| 53 | RRTransformSetFilter(RRTransformPtr dst,
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| 54 | PictFilterPtr filter,
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| 55 | xFixed * params, int nparams, int width, int height);
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| 56 |
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| 57 | extern _X_EXPORT Bool
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| 58 | RRTransformCopy(RRTransformPtr dst, RRTransformPtr src);
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| 59 |
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| 60 | /*
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| 61 | * Compute the complete transformation matrix including
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| 62 | * client-specified transform, rotation/reflection values and the crtc
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| 63 | * offset.
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| 64 | *
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| 65 | * Return TRUE if the resulting transform is not a simple translation.
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| 66 | */
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| 67 | extern _X_EXPORT Bool
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| 68 |
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| 69 | RRTransformCompute(int x,
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| 70 | int y,
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| 71 | int width,
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| 72 | int height,
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| 73 | Rotation rotation,
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| 74 | RRTransformPtr rr_transform,
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| 75 | PictTransformPtr transform,
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| 76 | struct pict_f_transform *f_transform,
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| 77 | struct pict_f_transform *f_inverse);
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| 78 |
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| 79 | #endif /* _RRTRANSFORM_H_ */
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