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Diffstat (limited to 'pixman/pixman/pixman-compute-region.c')
-rw-r--r--pixman/pixman/pixman-compute-region.c242
1 files changed, 0 insertions, 242 deletions
diff --git a/pixman/pixman/pixman-compute-region.c b/pixman/pixman/pixman-compute-region.c
deleted file mode 100644
index a93cee0ba..000000000
--- a/pixman/pixman/pixman-compute-region.c
+++ /dev/null
@@ -1,242 +0,0 @@
-/*
- *
- * Copyright © 1999 Keith Packard
- *
- * Permission to use, copy, modify, distribute, and sell this software and its
- * documentation for any purpose is hereby granted without fee, provided that
- * the above copyright notice appear in all copies and that both that
- * copyright notice and this permission notice appear in supporting
- * documentation, and that the name of Keith Packard not be used in
- * advertising or publicity pertaining to distribution of the software without
- * specific, written prior permission. Keith Packard makes no
- * representations about the suitability of this software for any purpose. It
- * is provided "as is" without express or implied warranty.
- *
- * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
- * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
- * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
- * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
- * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
- * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
- * PERFORMANCE OF THIS SOFTWARE.
- */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-#include <stdlib.h>
-#include <stdio.h>
-#include "pixman-private.h"
-
-#define BOUND(v) (int16_t) ((v) < INT16_MIN ? INT16_MIN : (v) > INT16_MAX ? INT16_MAX : (v))
-
-static inline pixman_bool_t
-miClipPictureReg (pixman_region32_t * pRegion,
- pixman_region32_t * pClip,
- int dx,
- int dy)
-{
- if (pixman_region32_n_rects(pRegion) == 1 &&
- pixman_region32_n_rects(pClip) == 1)
- {
- pixman_box32_t * pRbox = pixman_region32_rectangles(pRegion, NULL);
- pixman_box32_t * pCbox = pixman_region32_rectangles(pClip, NULL);
- int v;
-
- if (pRbox->x1 < (v = pCbox->x1 + dx))
- pRbox->x1 = BOUND(v);
- if (pRbox->x2 > (v = pCbox->x2 + dx))
- pRbox->x2 = BOUND(v);
- if (pRbox->y1 < (v = pCbox->y1 + dy))
- pRbox->y1 = BOUND(v);
- if (pRbox->y2 > (v = pCbox->y2 + dy))
- pRbox->y2 = BOUND(v);
- if (pRbox->x1 >= pRbox->x2 ||
- pRbox->y1 >= pRbox->y2)
- {
- pixman_region32_init (pRegion);
- }
- }
- else if (!pixman_region32_not_empty (pClip))
- return FALSE;
- else
- {
- if (dx || dy)
- pixman_region32_translate (pRegion, -dx, -dy);
- if (!pixman_region32_intersect (pRegion, pRegion, pClip))
- return FALSE;
- if (dx || dy)
- pixman_region32_translate(pRegion, dx, dy);
- }
- return pixman_region32_not_empty(pRegion);
-}
-
-
-static inline pixman_bool_t
-miClipPictureSrc (pixman_region32_t * pRegion,
- pixman_image_t * pPicture,
- int dx,
- int dy)
-{
- /* XXX what to do with clipping from transformed pictures? */
- if (pPicture->common.transform || pPicture->type != BITS)
- return TRUE;
-
- if (pPicture->common.repeat)
- {
- /* If the clip region was set by a client, then it should be intersected
- * with the composite region since it's interpreted as happening
- * after the repeat algorithm.
- *
- * If the clip region was not set by a client, then it was imposed by
- * boundaries of the pixmap, or by sibling or child windows, which means
- * it should in theory be repeated along. FIXME: we ignore that case.
- * It is only relevant for windows that are (a) clipped by siblings/children
- * and (b) used as source. However this case is not useful anyway due
- * to lack of GraphicsExpose events.
- */
- if (pPicture->common.has_client_clip)
- {
- pixman_region32_translate ( pRegion, dx, dy);
-
- if (!pixman_region32_intersect (pRegion, pRegion,
- pPicture->common.src_clip))
- return FALSE;
-
- pixman_region32_translate ( pRegion, -dx, -dy);
- }
-
- return TRUE;
- }
- else
- {
- return miClipPictureReg (pRegion,
- pPicture->common.src_clip,
- dx,
- dy);
- }
-}
-
-/*
- * returns FALSE if the final region is empty. Indistinguishable from
- * an allocation failure, but rendering ignores those anyways.
- */
-
-pixman_bool_t
-pixman_compute_composite_region32 (pixman_region32_t * pRegion,
- pixman_image_t * pSrc,
- pixman_image_t * pMask,
- pixman_image_t * pDst,
- int16_t xSrc,
- int16_t ySrc,
- int16_t xMask,
- int16_t yMask,
- int16_t xDst,
- int16_t yDst,
- uint16_t width,
- uint16_t height)
-{
- int v;
-
- pRegion->extents.x1 = xDst;
- v = xDst + width;
- pRegion->extents.x2 = BOUND(v);
- pRegion->extents.y1 = yDst;
- v = yDst + height;
- pRegion->extents.y2 = BOUND(v);
- pRegion->data = 0;
- /* Check for empty operation */
- if (pRegion->extents.x1 >= pRegion->extents.x2 ||
- pRegion->extents.y1 >= pRegion->extents.y2)
- {
- pixman_region32_init (pRegion);
- return FALSE;
- }
- /* clip against dst */
- if (!miClipPictureReg (pRegion, &pDst->common.clip_region, 0, 0))
- {
- pixman_region32_fini (pRegion);
- return FALSE;
- }
- if (pDst->common.alpha_map)
- {
- if (!miClipPictureReg (pRegion, &pDst->common.alpha_map->common.clip_region,
- -pDst->common.alpha_origin.x,
- -pDst->common.alpha_origin.y))
- {
- pixman_region32_fini (pRegion);
- return FALSE;
- }
- }
- /* clip against src */
- if (!miClipPictureSrc (pRegion, pSrc, xDst - xSrc, yDst - ySrc))
- {
- pixman_region32_fini (pRegion);
- return FALSE;
- }
- if (pSrc->common.alpha_map)
- {
- if (!miClipPictureSrc (pRegion, (pixman_image_t *)pSrc->common.alpha_map,
- xDst - (xSrc + pSrc->common.alpha_origin.x),
- yDst - (ySrc + pSrc->common.alpha_origin.y)))
- {
- pixman_region32_fini (pRegion);
- return FALSE;
- }
- }
- /* clip against mask */
- if (pMask)
- {
- if (!miClipPictureSrc (pRegion, pMask, xDst - xMask, yDst - yMask))
- {
- pixman_region32_fini (pRegion);
- return FALSE;
- }
- if (pMask->common.alpha_map)
- {
- if (!miClipPictureSrc (pRegion, (pixman_image_t *)pMask->common.alpha_map,
- xDst - (xMask + pMask->common.alpha_origin.x),
- yDst - (yMask + pMask->common.alpha_origin.y)))
- {
- pixman_region32_fini (pRegion);
- return FALSE;
- }
- }
- }
-
- return TRUE;
-}
-
-PIXMAN_EXPORT pixman_bool_t
-pixman_compute_composite_region (pixman_region16_t * pRegion,
- pixman_image_t * pSrc,
- pixman_image_t * pMask,
- pixman_image_t * pDst,
- int16_t xSrc,
- int16_t ySrc,
- int16_t xMask,
- int16_t yMask,
- int16_t xDst,
- int16_t yDst,
- uint16_t width,
- uint16_t height)
-{
- pixman_region32_t r32;
- pixman_bool_t retval;
-
- pixman_region32_init (&r32);
-
- retval = pixman_compute_composite_region32 (&r32, pSrc, pMask, pDst,
- xSrc, ySrc, xMask, yMask, xDst, yDst,
- width, height);
-
- if (retval)
- {
- if (!pixman_region16_copy_from_region32 (pRegion, &r32))
- retval = FALSE;
- }
-
- pixman_region32_fini (&r32);
- return retval;
-}
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