diff options
Diffstat (limited to 'randr/rrtransform.c')
| -rw-r--r-- | randr/rrtransform.c | 368 |
1 files changed, 191 insertions, 177 deletions
diff --git a/randr/rrtransform.c b/randr/rrtransform.c index e1620498b..f93181d2e 100644 --- a/randr/rrtransform.c +++ b/randr/rrtransform.c @@ -24,63 +24,59 @@ #include "rrtransform.h" void -RRTransformInit (RRTransformPtr transform) +RRTransformInit(RRTransformPtr transform) { - pixman_transform_init_identity (&transform->transform); - pixman_f_transform_init_identity (&transform->f_transform); - pixman_f_transform_init_identity (&transform->f_inverse); + pixman_transform_init_identity(&transform->transform); + pixman_f_transform_init_identity(&transform->f_transform); + pixman_f_transform_init_identity(&transform->f_inverse); transform->filter = NULL; transform->params = NULL; transform->nparams = 0; } void -RRTransformFini (RRTransformPtr transform) +RRTransformFini(RRTransformPtr transform) { free(transform->params); } Bool -RRTransformEqual (RRTransformPtr a, RRTransformPtr b) +RRTransformEqual(RRTransformPtr a, RRTransformPtr b) { - if (a && pixman_transform_is_identity (&a->transform)) - a = NULL; - if (b && pixman_transform_is_identity (&b->transform)) - b = NULL; + if (a && pixman_transform_is_identity(&a->transform)) + a = NULL; + if (b && pixman_transform_is_identity(&b->transform)) + b = NULL; if (a == NULL && b == NULL) - return TRUE; + return TRUE; if (a == NULL || b == NULL) - return FALSE; - if (memcmp (&a->transform, &b->transform, sizeof (a->transform)) != 0) - return FALSE; + return FALSE; + if (memcmp(&a->transform, &b->transform, sizeof(a->transform)) != 0) + return FALSE; if (a->filter != b->filter) - return FALSE; + return FALSE; if (a->nparams != b->nparams) - return FALSE; - if (memcmp (a->params, b->params, a->nparams * sizeof (xFixed)) != 0) - return FALSE; + return FALSE; + if (memcmp(a->params, b->params, a->nparams * sizeof(xFixed)) != 0) + return FALSE; return TRUE; } Bool -RRTransformSetFilter (RRTransformPtr dst, - PictFilterPtr filter, - xFixed *params, - int nparams, - int width, - int height) +RRTransformSetFilter(RRTransformPtr dst, + PictFilterPtr filter, + xFixed * params, int nparams, int width, int height) { - xFixed *new_params; + xFixed *new_params; - if (nparams) - { - new_params = malloc(nparams * sizeof (xFixed)); - if (!new_params) - return FALSE; - memcpy (new_params, params, nparams * sizeof (xFixed)); + if (nparams) { + new_params = malloc(nparams * sizeof(xFixed)); + if (!new_params) + return FALSE; + memcpy(new_params, params, nparams * sizeof(xFixed)); } else - new_params = NULL; + new_params = NULL; free(dst->params); dst->filter = filter; dst->params = new_params; @@ -91,27 +87,26 @@ RRTransformSetFilter (RRTransformPtr dst, } Bool -RRTransformCopy (RRTransformPtr dst, RRTransformPtr src) +RRTransformCopy(RRTransformPtr dst, RRTransformPtr src) { - if (src && pixman_transform_is_identity (&src->transform)) - src = NULL; + if (src && pixman_transform_is_identity(&src->transform)) + src = NULL; - if (src) - { - if (!RRTransformSetFilter (dst, src->filter, - src->params, src->nparams, src->width, src->height)) - return FALSE; - dst->transform = src->transform; - dst->f_transform = src->f_transform; - dst->f_inverse = src->f_inverse; + if (src) { + if (!RRTransformSetFilter(dst, src->filter, + src->params, src->nparams, src->width, + src->height)) + return FALSE; + dst->transform = src->transform; + dst->f_transform = src->f_transform; + dst->f_inverse = src->f_inverse; } - else - { - if (!RRTransformSetFilter (dst, NULL, NULL, 0, 0, 0)) - return FALSE; - pixman_transform_init_identity (&dst->transform); - pixman_f_transform_init_identity (&dst->f_transform); - pixman_f_transform_init_identity (&dst->f_inverse); + else { + if (!RRTransformSetFilter(dst, NULL, NULL, 0, 0, 0)) + return FALSE; + pixman_transform_init_identity(&dst->transform); + pixman_f_transform_init_identity(&dst->f_transform); + pixman_f_transform_init_identity(&dst->f_inverse); } return TRUE; } @@ -125,13 +120,13 @@ RRTransformRescale(struct pixman_f_transform *f_transform, double limit) int i, j; for (j = 0; j < 3; j++) - for (i = 0; i < 3; i++) - if ((v = abs (f_transform->m[j][i])) > max) - max = v; + for (i = 0; i < 3; i++) + if ((v = abs(f_transform->m[j][i])) > max) + max = v; scale = limit / max; for (j = 0; j < 3; j++) - for (i = 0; i < 3; i++) - f_transform->m[j][i] *= scale; + for (i = 0; i < 3; i++) + f_transform->m[j][i] *= scale; } /* @@ -142,142 +137,161 @@ RRTransformRescale(struct pixman_f_transform *f_transform, double limit) * Return TRUE if the resulting transform is not a simple translation. */ Bool -RRTransformCompute (int x, - int y, - int width, - int height, - Rotation rotation, - RRTransformPtr rr_transform, - - PictTransformPtr transform, - struct pixman_f_transform *f_transform, - struct pixman_f_transform *f_inverse) +RRTransformCompute(int x, + int y, + int width, + int height, + Rotation rotation, + RRTransformPtr rr_transform, + PictTransformPtr transform, + struct pixman_f_transform *f_transform, + struct pixman_f_transform *f_inverse) { - PictTransform t_transform, inverse; + PictTransform t_transform, inverse; struct pixman_f_transform tf_transform, tf_inverse; - Bool overflow = FALSE; + Bool overflow = FALSE; + + if (!transform) + transform = &t_transform; + if (!f_transform) + f_transform = &tf_transform; + if (!f_inverse) + f_inverse = &tf_inverse; + + pixman_transform_init_identity(transform); + pixman_transform_init_identity(&inverse); + pixman_f_transform_init_identity(f_transform); + pixman_f_transform_init_identity(f_inverse); + if (rotation != RR_Rotate_0) { + double f_rot_cos, f_rot_sin, f_rot_dx, f_rot_dy; + double f_scale_x, f_scale_y, f_scale_dx, f_scale_dy; + xFixed rot_cos, rot_sin, rot_dx, rot_dy; + xFixed scale_x, scale_y, scale_dx, scale_dy; - if (!transform) transform = &t_transform; - if (!f_transform) f_transform = &tf_transform; - if (!f_inverse) f_inverse = &tf_inverse; + /* rotation */ + switch (rotation & 0xf) { + default: + case RR_Rotate_0: + f_rot_cos = 1; + f_rot_sin = 0; + f_rot_dx = 0; + f_rot_dy = 0; + rot_cos = F(1); + rot_sin = F(0); + rot_dx = F(0); + rot_dy = F(0); + break; + case RR_Rotate_90: + f_rot_cos = 0; + f_rot_sin = 1; + f_rot_dx = height; + f_rot_dy = 0; + rot_cos = F(0); + rot_sin = F(1); + rot_dx = F(height); + rot_dy = F(0); + break; + case RR_Rotate_180: + f_rot_cos = -1; + f_rot_sin = 0; + f_rot_dx = width; + f_rot_dy = height; + rot_cos = F(-1); + rot_sin = F(0); + rot_dx = F(width); + rot_dy = F(height); + break; + case RR_Rotate_270: + f_rot_cos = 0; + f_rot_sin = -1; + f_rot_dx = 0; + f_rot_dy = width; + rot_cos = F(0); + rot_sin = F(-1); + rot_dx = F(0); + rot_dy = F(width); + break; + } - pixman_transform_init_identity (transform); - pixman_transform_init_identity (&inverse); - pixman_f_transform_init_identity (f_transform); - pixman_f_transform_init_identity (f_inverse); - if (rotation != RR_Rotate_0) - { - double f_rot_cos, f_rot_sin, f_rot_dx, f_rot_dy; - double f_scale_x, f_scale_y, f_scale_dx, f_scale_dy; - xFixed rot_cos, rot_sin, rot_dx, rot_dy; - xFixed scale_x, scale_y, scale_dx, scale_dy; + pixman_transform_rotate(transform, &inverse, rot_cos, rot_sin); + pixman_transform_translate(transform, &inverse, rot_dx, rot_dy); + pixman_f_transform_rotate(f_transform, f_inverse, f_rot_cos, f_rot_sin); + pixman_f_transform_translate(f_transform, f_inverse, f_rot_dx, + f_rot_dy); - /* rotation */ - switch (rotation & 0xf) { - default: - case RR_Rotate_0: - f_rot_cos = 1; f_rot_sin = 0; - f_rot_dx = 0; f_rot_dy = 0; - rot_cos = F ( 1); rot_sin = F ( 0); - rot_dx = F ( 0); rot_dy = F ( 0); - break; - case RR_Rotate_90: - f_rot_cos = 0; f_rot_sin = 1; - f_rot_dx = height; f_rot_dy = 0; - rot_cos = F ( 0); rot_sin = F ( 1); - rot_dx = F ( height); rot_dy = F (0); - break; - case RR_Rotate_180: - f_rot_cos = -1; f_rot_sin = 0; - f_rot_dx = width; f_rot_dy = height; - rot_cos = F (-1); rot_sin = F ( 0); - rot_dx = F (width); rot_dy = F ( height); - break; - case RR_Rotate_270: - f_rot_cos = 0; f_rot_sin = -1; - f_rot_dx = 0; f_rot_dy = width; - rot_cos = F ( 0); rot_sin = F (-1); - rot_dx = F ( 0); rot_dy = F ( width); - break; - } - - pixman_transform_rotate (transform, &inverse, rot_cos, rot_sin); - pixman_transform_translate (transform, &inverse, rot_dx, rot_dy); - pixman_f_transform_rotate (f_transform, f_inverse, f_rot_cos, f_rot_sin); - pixman_f_transform_translate (f_transform, f_inverse, f_rot_dx, f_rot_dy); + /* reflection */ + f_scale_x = 1; + f_scale_dx = 0; + f_scale_y = 1; + f_scale_dy = 0; + scale_x = F(1); + scale_dx = 0; + scale_y = F(1); + scale_dy = 0; + if (rotation & RR_Reflect_X) { + f_scale_x = -1; + scale_x = F(-1); + if (rotation & (RR_Rotate_0 | RR_Rotate_180)) { + f_scale_dx = width; + scale_dx = F(width); + } + else { + f_scale_dx = height; + scale_dx = F(height); + } + } + if (rotation & RR_Reflect_Y) { + f_scale_y = -1; + scale_y = F(-1); + if (rotation & (RR_Rotate_0 | RR_Rotate_180)) { + f_scale_dy = height; + scale_dy = F(height); + } + else { + f_scale_dy = width; + scale_dy = F(width); + } + } - /* reflection */ - f_scale_x = 1; - f_scale_dx = 0; - f_scale_y = 1; - f_scale_dy = 0; - scale_x = F (1); - scale_dx = 0; - scale_y = F (1); - scale_dy = 0; - if (rotation & RR_Reflect_X) - { - f_scale_x = -1; - scale_x = F(-1); - if (rotation & (RR_Rotate_0|RR_Rotate_180)) { - f_scale_dx = width; - scale_dx = F(width); - } else { - f_scale_dx = height; - scale_dx = F(height); - } - } - if (rotation & RR_Reflect_Y) - { - f_scale_y = -1; - scale_y = F(-1); - if (rotation & (RR_Rotate_0|RR_Rotate_180)) { - f_scale_dy = height; - scale_dy = F(height); - } else { - f_scale_dy = width; - scale_dy = F(width); - } - } - - pixman_transform_scale (transform, &inverse, scale_x, scale_y); - pixman_f_transform_scale (f_transform, f_inverse, f_scale_x, f_scale_y); - pixman_transform_translate (transform, &inverse, scale_dx, scale_dy); - pixman_f_transform_translate (f_transform, f_inverse, f_scale_dx, f_scale_dy); + pixman_transform_scale(transform, &inverse, scale_x, scale_y); + pixman_f_transform_scale(f_transform, f_inverse, f_scale_x, f_scale_y); + pixman_transform_translate(transform, &inverse, scale_dx, scale_dy); + pixman_f_transform_translate(f_transform, f_inverse, f_scale_dx, + f_scale_dy); } - + #ifdef RANDR_12_INTERFACE - if (rr_transform) - { - if (!pixman_transform_multiply (transform, &rr_transform->transform, transform)) - overflow = TRUE; - pixman_f_transform_multiply (f_transform, &rr_transform->f_transform, f_transform); - pixman_f_transform_multiply (f_inverse, f_inverse, &rr_transform->f_inverse); + if (rr_transform) { + if (!pixman_transform_multiply + (transform, &rr_transform->transform, transform)) + overflow = TRUE; + pixman_f_transform_multiply(f_transform, &rr_transform->f_transform, + f_transform); + pixman_f_transform_multiply(f_inverse, f_inverse, + &rr_transform->f_inverse); } #endif /* * Compute the class of the resulting transform */ - if (!overflow && pixman_transform_is_identity (transform)) - { - pixman_transform_init_translate (transform, F ( x), F ( y)); + if (!overflow && pixman_transform_is_identity(transform)) { + pixman_transform_init_translate(transform, F(x), F(y)); - pixman_f_transform_init_translate (f_transform, x, y); - pixman_f_transform_init_translate (f_inverse, -x, -y); - return FALSE; + pixman_f_transform_init_translate(f_transform, x, y); + pixman_f_transform_init_translate(f_inverse, -x, -y); + return FALSE; } - else - { - pixman_f_transform_translate (f_transform, f_inverse, x, y); - if (!pixman_transform_translate (transform, &inverse, F(x), F(y))) - overflow = TRUE; - if (overflow) - { - struct pixman_f_transform f_scaled; - f_scaled = *f_transform; - RRTransformRescale(&f_scaled, 16384.0); - pixman_transform_from_pixman_f_transform(transform, &f_scaled); - } - return TRUE; + else { + pixman_f_transform_translate(f_transform, f_inverse, x, y); + if (!pixman_transform_translate(transform, &inverse, F(x), F(y))) + overflow = TRUE; + if (overflow) { + struct pixman_f_transform f_scaled; + + f_scaled = *f_transform; + RRTransformRescale(&f_scaled, 16384.0); + pixman_transform_from_pixman_f_transform(transform, &f_scaled); + } + return TRUE; } } |