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