[PATCH 8/9] fb: split off a few functions into a seperate file and enhance them slightly.
Maarten Maathuis
madman2003 at gmail.com
Tue Feb 3 11:06:30 PST 2009
- Compatibility wrappers, if deemed neccesary will come later.
---
fb/Makefile.am | 3 +-
fb/fb.h | 37 +-----
fb/fb24_32.c | 4 +-
fb/fbcopy.c | 342 ++---------------------------------------------
fb/fbcopy_helpers.c | 367 +++++++++++++++++++++++++++++++++++++++++++++++++++
fb/fbcopy_helpers.h | 52 +++++++
fb/fboverlay.c | 1 +
fb/fbwindow.c | 5 +-
8 files changed, 448 insertions(+), 363 deletions(-)
create mode 100644 fb/fbcopy_helpers.c
create mode 100644 fb/fbcopy_helpers.h
diff --git a/fb/Makefile.am b/fb/Makefile.am
index 64e49f3..cfd9364 100644
--- a/fb/Makefile.am
+++ b/fb/Makefile.am
@@ -7,7 +7,7 @@ INCLUDES = \
AM_CFLAGS = $(DIX_CFLAGS)
if XORG
-sdk_HEADERS = fb.h fbrop.h fboverlay.h wfbrename.h fbpict.h
+sdk_HEADERS = fb.h fbrop.h fboverlay.h wfbrename.h fbpict.h fbcopy_helpers.h
endif
libfb_la_CFLAGS = $(AM_CFLAGS)
@@ -24,6 +24,7 @@ libfb_la_SOURCES = \
fbbits.h \
fbblt.c \
fbbltone.c \
+ fbcopy_helpers.c \
fbcopy.c \
fbfill.c \
fbfillrect.c \
diff --git a/fb/fb.h b/fb/fb.h
index 8384315..b0898b0 100644
--- a/fb/fb.h
+++ b/fb/fb.h
@@ -788,7 +788,7 @@ fb24_32GetImage (DrawablePtr pDrawable,
unsigned long planeMask,
char *d);
-extern _X_EXPORT void
+extern _X_EXPORT Bool
fb24_32CopyMtoN (DrawablePtr pSrcDrawable,
DrawablePtr pDstDrawable,
GCPtr pGC,
@@ -1306,7 +1306,7 @@ fbInitVisuals (VisualPtr *visualp,
* fbcopy.c
*/
-typedef void (*fbCopyProc) (DrawablePtr pSrcDrawable,
+typedef Bool (*fbCopyProc) (DrawablePtr pSrcDrawable,
DrawablePtr pDstDrawable,
GCPtr pGC,
BoxPtr pDstBox,
@@ -1318,7 +1318,7 @@ typedef void (*fbCopyProc) (DrawablePtr pSrcDrawable,
Pixel bitplane,
void *closure);
-extern _X_EXPORT void
+extern _X_EXPORT Bool
fbCopyNtoN (DrawablePtr pSrcDrawable,
DrawablePtr pDstDrawable,
GCPtr pGC,
@@ -1331,7 +1331,7 @@ fbCopyNtoN (DrawablePtr pSrcDrawable,
Pixel bitplane,
void *closure);
-extern _X_EXPORT void
+extern _X_EXPORT Bool
fbCopy1toN (DrawablePtr pSrcDrawable,
DrawablePtr pDstDrawable,
GCPtr pGC,
@@ -1344,7 +1344,7 @@ fbCopy1toN (DrawablePtr pSrcDrawable,
Pixel bitplane,
void *closure);
-extern _X_EXPORT void
+extern _X_EXPORT Bool
fbCopyNto1 (DrawablePtr pSrcDrawable,
DrawablePtr pDstDrawable,
GCPtr pGC,
@@ -1357,31 +1357,6 @@ fbCopyNto1 (DrawablePtr pSrcDrawable,
Pixel bitplane,
void *closure);
-extern _X_EXPORT void
-fbCopyRegion (DrawablePtr pSrcDrawable,
- DrawablePtr pDstDrawable,
- GCPtr pGC,
- RegionPtr pDstRegion,
- int dx,
- int dy,
- fbCopyProc copyProc,
- Pixel bitPlane,
- void *closure);
-
-extern _X_EXPORT RegionPtr
-fbDoCopy (DrawablePtr pSrcDrawable,
- DrawablePtr pDstDrawable,
- GCPtr pGC,
- int xIn,
- int yIn,
- int widthSrc,
- int heightSrc,
- int xOut,
- int yOut,
- fbCopyProc copyProc,
- Pixel bitplane,
- void *closure);
-
extern _X_EXPORT RegionPtr
fbCopyArea (DrawablePtr pSrcDrawable,
DrawablePtr pDstDrawable,
@@ -2036,7 +2011,7 @@ fbPositionWindow(WindowPtr pWin, int x, int y);
extern _X_EXPORT Bool
fbUnmapWindow(WindowPtr pWindow);
-extern _X_EXPORT void
+extern _X_EXPORT Bool
fbCopyWindowProc (DrawablePtr pSrcDrawable,
DrawablePtr pDstDrawable,
GCPtr pGC,
diff --git a/fb/fb24_32.c b/fb/fb24_32.c
index 1ebd598..952b9ff 100644
--- a/fb/fb24_32.c
+++ b/fb/fb24_32.c
@@ -472,7 +472,7 @@ fb24_32GetImage (DrawablePtr pDrawable,
fbFinishAccess (pDrawable);
}
-void
+Bool
fb24_32CopyMtoN (DrawablePtr pSrcDrawable,
DrawablePtr pDstDrawable,
GCPtr pGC,
@@ -529,6 +529,8 @@ fb24_32CopyMtoN (DrawablePtr pSrcDrawable,
fbFinishAccess (pSrcDrawable);
fbFinishAccess (pDstDrawable);
+
+ return TRUE;
}
PixmapPtr
diff --git a/fb/fbcopy.c b/fb/fbcopy.c
index b8b0b6a..2f430b7 100644
--- a/fb/fbcopy.c
+++ b/fb/fbcopy.c
@@ -27,8 +27,9 @@
#include <stdlib.h>
#include "fb.h"
+#include "fbcopy_helpers.h"
-void
+Bool
fbCopyNtoN (DrawablePtr pSrcDrawable,
DrawablePtr pDstDrawable,
GCPtr pGC,
@@ -98,9 +99,11 @@ fbCopyNtoN (DrawablePtr pSrcDrawable,
}
fbFinishAccess (pDstDrawable);
fbFinishAccess (pSrcDrawable);
+
+ return TRUE;
}
-void
+Bool
fbCopy1toN (DrawablePtr pSrcDrawable,
DrawablePtr pDstDrawable,
GCPtr pGC,
@@ -171,9 +174,11 @@ fbCopy1toN (DrawablePtr pSrcDrawable,
fbFinishAccess (pDstDrawable);
fbFinishAccess (pSrcDrawable);
+
+ return TRUE;
}
-void
+Bool
fbCopyNto1 (DrawablePtr pSrcDrawable,
DrawablePtr pDstDrawable,
GCPtr pGC,
@@ -244,7 +249,7 @@ fbCopyNto1 (DrawablePtr pSrcDrawable,
tmpStride = ((width + FB_STIP_MASK) >> FB_STIP_SHIFT);
tmp = xalloc (tmpStride * height * sizeof (FbStip));
if (!tmp)
- return;
+ return FALSE;
fbGetDrawable (pSrcDrawable, src, srcStride, srcBpp, srcXoff, srcYoff);
fbGetDrawable (pDstDrawable, dst, dstStride, dstBpp, dstXoff, dstYoff);
@@ -287,329 +292,8 @@ fbCopyNto1 (DrawablePtr pSrcDrawable,
}
pbox++;
}
-}
-
-void
-fbCopyRegion (DrawablePtr pSrcDrawable,
- DrawablePtr pDstDrawable,
- GCPtr pGC,
- RegionPtr pDstRegion,
- int dx,
- int dy,
- fbCopyProc copyProc,
- Pixel bitPlane,
- void *closure)
-{
- int careful;
- Bool reverse;
- Bool upsidedown;
- BoxPtr pbox;
- int nbox;
- BoxPtr pboxNew1, pboxNew2, pboxBase, pboxNext, pboxTmp;
-
- pbox = REGION_RECTS(pDstRegion);
- nbox = REGION_NUM_RECTS(pDstRegion);
-
- /* XXX we have to err on the side of safety when both are windows,
- * because we don't know if IncludeInferiors is being used.
- */
- careful = ((pSrcDrawable == pDstDrawable) ||
- ((pSrcDrawable->type == DRAWABLE_WINDOW) &&
- (pDstDrawable->type == DRAWABLE_WINDOW)));
-
- pboxNew1 = NULL;
- pboxNew2 = NULL;
- if (careful && dy < 0)
- {
- upsidedown = TRUE;
-
- if (nbox > 1)
- {
- /* keep ordering in each band, reverse order of bands */
- pboxNew1 = (BoxPtr)xalloc(sizeof(BoxRec) * nbox);
- if(!pboxNew1)
- return;
- pboxBase = pboxNext = pbox+nbox-1;
- while (pboxBase >= pbox)
- {
- while ((pboxNext >= pbox) &&
- (pboxBase->y1 == pboxNext->y1))
- pboxNext--;
- pboxTmp = pboxNext+1;
- while (pboxTmp <= pboxBase)
- {
- *pboxNew1++ = *pboxTmp++;
- }
- pboxBase = pboxNext;
- }
- pboxNew1 -= nbox;
- pbox = pboxNew1;
- }
- }
- else
- {
- /* walk source top to bottom */
- upsidedown = FALSE;
- }
-
- if (careful && dx < 0)
- {
- /* walk source right to left */
- if (dy <= 0)
- reverse = TRUE;
- else
- reverse = FALSE;
-
- if (nbox > 1)
- {
- /* reverse order of rects in each band */
- pboxNew2 = (BoxPtr)xalloc(sizeof(BoxRec) * nbox);
- if(!pboxNew2)
- {
- if (pboxNew1)
- xfree(pboxNew1);
- return;
- }
- pboxBase = pboxNext = pbox;
- while (pboxBase < pbox+nbox)
- {
- while ((pboxNext < pbox+nbox) &&
- (pboxNext->y1 == pboxBase->y1))
- pboxNext++;
- pboxTmp = pboxNext;
- while (pboxTmp != pboxBase)
- {
- *pboxNew2++ = *--pboxTmp;
- }
- pboxBase = pboxNext;
- }
- pboxNew2 -= nbox;
- pbox = pboxNew2;
- }
- }
- else
- {
- /* walk source left to right */
- reverse = FALSE;
- }
-
- (*copyProc) (pSrcDrawable,
- pDstDrawable,
- pGC,
- pbox,
- nbox,
- dx, dy,
- reverse, upsidedown, bitPlane, closure);
-
- if (pboxNew1)
- xfree (pboxNew1);
- if (pboxNew2)
- xfree (pboxNew2);
-}
-
-RegionPtr
-fbDoCopy (DrawablePtr pSrcDrawable,
- DrawablePtr pDstDrawable,
- GCPtr pGC,
- int xIn,
- int yIn,
- int widthSrc,
- int heightSrc,
- int xOut,
- int yOut,
- fbCopyProc copyProc,
- Pixel bitPlane,
- void *closure)
-{
- RegionPtr prgnSrcClip = NULL; /* may be a new region, or just a copy */
- Bool freeSrcClip = FALSE;
- RegionPtr prgnExposed = NULL;
- RegionRec rgnDst;
- int dx;
- int dy;
- int numRects;
- int box_x1;
- int box_y1;
- int box_x2;
- int box_y2;
- Bool fastSrc = FALSE; /* for fast clipping with pixmap source */
- Bool fastDst = FALSE; /* for fast clipping with one rect dest */
- Bool fastExpose = FALSE; /* for fast exposures with pixmap source */
-
- /* Short cut for unmapped windows */
-
- if (pDstDrawable->type == DRAWABLE_WINDOW &&
- !((WindowPtr)pDstDrawable)->realized)
- {
- return NULL;
- }
-
- if ((pSrcDrawable != pDstDrawable) &&
- pSrcDrawable->pScreen->SourceValidate)
- {
- (*pSrcDrawable->pScreen->SourceValidate) (pSrcDrawable, xIn, yIn, widthSrc, heightSrc);
- }
-
- /* Compute source clip region */
- if (pSrcDrawable->type == DRAWABLE_PIXMAP)
- {
- if ((pSrcDrawable == pDstDrawable) && (pGC->clientClipType == CT_NONE))
- prgnSrcClip = fbGetCompositeClip(pGC);
- else
- fastSrc = TRUE;
- }
- else
- {
- if (pGC->subWindowMode == IncludeInferiors)
- {
- /*
- * XFree86 DDX empties the border clip when the
- * VT is inactive, make sure the region isn't empty
- */
- if (!((WindowPtr) pSrcDrawable)->parent &&
- REGION_NOTEMPTY (pSrcDrawable->pScreen,
- &((WindowPtr) pSrcDrawable)->borderClip))
- {
- /*
- * special case bitblt from root window in
- * IncludeInferiors mode; just like from a pixmap
- */
- fastSrc = TRUE;
- }
- else if ((pSrcDrawable == pDstDrawable) &&
- (pGC->clientClipType == CT_NONE))
- {
- prgnSrcClip = fbGetCompositeClip(pGC);
- }
- else
- {
- prgnSrcClip = NotClippedByChildren((WindowPtr)pSrcDrawable);
- freeSrcClip = TRUE;
- }
- }
- else
- {
- prgnSrcClip = &((WindowPtr)pSrcDrawable)->clipList;
- }
- }
-
- xIn += pSrcDrawable->x;
- yIn += pSrcDrawable->y;
-
- xOut += pDstDrawable->x;
- yOut += pDstDrawable->y;
-
- box_x1 = xIn;
- box_y1 = yIn;
- box_x2 = xIn + widthSrc;
- box_y2 = yIn + heightSrc;
-
- dx = xIn - xOut;
- dy = yIn - yOut;
-
- /* Don't create a source region if we are doing a fast clip */
- if (fastSrc)
- {
- RegionPtr cclip;
-
- fastExpose = TRUE;
- /*
- * clip the source; if regions extend beyond the source size,
- * make sure exposure events get sent
- */
- if (box_x1 < pSrcDrawable->x)
- {
- box_x1 = pSrcDrawable->x;
- fastExpose = FALSE;
- }
- if (box_y1 < pSrcDrawable->y)
- {
- box_y1 = pSrcDrawable->y;
- fastExpose = FALSE;
- }
- if (box_x2 > pSrcDrawable->x + (int) pSrcDrawable->width)
- {
- box_x2 = pSrcDrawable->x + (int) pSrcDrawable->width;
- fastExpose = FALSE;
- }
- if (box_y2 > pSrcDrawable->y + (int) pSrcDrawable->height)
- {
- box_y2 = pSrcDrawable->y + (int) pSrcDrawable->height;
- fastExpose = FALSE;
- }
-
- /* Translate and clip the dst to the destination composite clip */
- box_x1 -= dx;
- box_x2 -= dx;
- box_y1 -= dy;
- box_y2 -= dy;
-
- /* If the destination composite clip is one rectangle we can
- do the clip directly. Otherwise we have to create a full
- blown region and call intersect */
-
- cclip = fbGetCompositeClip(pGC);
- if (REGION_NUM_RECTS(cclip) == 1)
- {
- BoxPtr pBox = REGION_RECTS(cclip);
-
- if (box_x1 < pBox->x1) box_x1 = pBox->x1;
- if (box_x2 > pBox->x2) box_x2 = pBox->x2;
- if (box_y1 < pBox->y1) box_y1 = pBox->y1;
- if (box_y2 > pBox->y2) box_y2 = pBox->y2;
- fastDst = TRUE;
- }
- }
-
- /* Check to see if the region is empty */
- if (box_x1 >= box_x2 || box_y1 >= box_y2)
- {
- REGION_NULL(pGC->pScreen, &rgnDst);
- }
- else
- {
- BoxRec box;
- box.x1 = box_x1;
- box.y1 = box_y1;
- box.x2 = box_x2;
- box.y2 = box_y2;
- REGION_INIT(pGC->pScreen, &rgnDst, &box, 1);
- }
-
- /* Clip against complex source if needed */
- if (!fastSrc)
- {
- REGION_INTERSECT(pGC->pScreen, &rgnDst, &rgnDst, prgnSrcClip);
- REGION_TRANSLATE(pGC->pScreen, &rgnDst, -dx, -dy);
- }
-
- /* Clip against complex dest if needed */
- if (!fastDst)
- {
- REGION_INTERSECT(pGC->pScreen, &rgnDst, &rgnDst,
- fbGetCompositeClip(pGC));
- }
-
- /* Do bit blitting */
- numRects = REGION_NUM_RECTS(&rgnDst);
- if (numRects && widthSrc && heightSrc)
- fbCopyRegion (pSrcDrawable, pDstDrawable, pGC,
- &rgnDst, dx, dy, copyProc, bitPlane, closure);
- /* Pixmap sources generate a NoExposed (we return NULL to do this) */
- if (!fastExpose && pGC->fExpose)
- prgnExposed = miHandleExposures(pSrcDrawable, pDstDrawable, pGC,
- xIn - pSrcDrawable->x,
- yIn - pSrcDrawable->y,
- widthSrc, heightSrc,
- xOut - pDstDrawable->x,
- yOut - pDstDrawable->y,
- (unsigned long) bitPlane);
- REGION_UNINIT(pGC->pScreen, &rgnDst);
- if (freeSrcClip)
- REGION_DESTROY(pGC->pScreen, prgnSrcClip);
- fbValidateDrawable (pDstDrawable);
- return prgnExposed;
+ return TRUE;
}
RegionPtr
@@ -632,7 +316,7 @@ fbCopyArea (DrawablePtr pSrcDrawable,
#endif
copy = fbCopyNtoN;
return fbDoCopy (pSrcDrawable, pDstDrawable, pGC, xIn, yIn,
- widthSrc, heightSrc, xOut, yOut, copy, 0, 0);
+ widthSrc, heightSrc, xOut, yOut, copy, 0, 0, NULL);
}
RegionPtr
@@ -650,11 +334,11 @@ fbCopyPlane (DrawablePtr pSrcDrawable,
if (pSrcDrawable->bitsPerPixel > 1)
return fbDoCopy (pSrcDrawable, pDstDrawable, pGC,
xIn, yIn, widthSrc, heightSrc,
- xOut, yOut, fbCopyNto1, (Pixel) bitplane, 0);
+ xOut, yOut, fbCopyNto1, (Pixel) bitplane, 0, NULL);
else if (bitplane & 1)
return fbDoCopy (pSrcDrawable, pDstDrawable, pGC, xIn, yIn,
widthSrc, heightSrc, xOut, yOut, fbCopy1toN,
- (Pixel) bitplane, 0);
+ (Pixel) bitplane, 0, NULL);
else
return miHandleExposures(pSrcDrawable, pDstDrawable, pGC,
xIn, yIn,
diff --git a/fb/fbcopy_helpers.c b/fb/fbcopy_helpers.c
new file mode 100644
index 0000000..b51b0ad
--- /dev/null
+++ b/fb/fbcopy_helpers.c
@@ -0,0 +1,367 @@
+/*
+ * Copyright © 1998 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_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include <stdlib.h>
+
+#include "fb.h"
+#include "fbcopy_helpers.h"
+
+Bool
+fbCopyRegion (DrawablePtr pSrcDrawable,
+ DrawablePtr pDstDrawable,
+ GCPtr pGC,
+ RegionPtr pDstRegion,
+ int dx,
+ int dy,
+ fbCopyProc copyProc,
+ Pixel bitPlane,
+ void *closure)
+{
+ int careful;
+ Bool reverse;
+ Bool upsidedown;
+ BoxPtr pbox;
+ int nbox;
+ BoxPtr pboxNew1, pboxNew2, pboxBase, pboxNext, pboxTmp;
+ Bool ret;
+
+ pbox = REGION_RECTS(pDstRegion);
+ nbox = REGION_NUM_RECTS(pDstRegion);
+
+ /* XXX we have to err on the side of safety when both are windows,
+ * because we don't know if IncludeInferiors is being used.
+ */
+ careful = ((pSrcDrawable == pDstDrawable) ||
+ ((pSrcDrawable->type == DRAWABLE_WINDOW) &&
+ (pDstDrawable->type == DRAWABLE_WINDOW)));
+
+ pboxNew1 = NULL;
+ pboxNew2 = NULL;
+ if (careful && dy < 0)
+ {
+ upsidedown = TRUE;
+
+ if (nbox > 1)
+ {
+ /* keep ordering in each band, reverse order of bands */
+ pboxNew1 = (BoxPtr)xalloc(sizeof(BoxRec) * nbox);
+ if(!pboxNew1)
+ return FALSE;
+ pboxBase = pboxNext = pbox+nbox-1;
+ while (pboxBase >= pbox)
+ {
+ while ((pboxNext >= pbox) &&
+ (pboxBase->y1 == pboxNext->y1))
+ pboxNext--;
+ pboxTmp = pboxNext+1;
+ while (pboxTmp <= pboxBase)
+ {
+ *pboxNew1++ = *pboxTmp++;
+ }
+ pboxBase = pboxNext;
+ }
+ pboxNew1 -= nbox;
+ pbox = pboxNew1;
+ }
+ }
+ else
+ {
+ /* walk source top to bottom */
+ upsidedown = FALSE;
+ }
+
+ if (careful && dx < 0)
+ {
+ /* walk source right to left */
+ if (dy <= 0)
+ reverse = TRUE;
+ else
+ reverse = FALSE;
+
+ if (nbox > 1)
+ {
+ /* reverse order of rects in each band */
+ pboxNew2 = (BoxPtr)xalloc(sizeof(BoxRec) * nbox);
+ if(!pboxNew2)
+ {
+ if (pboxNew1)
+ xfree(pboxNew1);
+ return FALSE;
+ }
+ pboxBase = pboxNext = pbox;
+ while (pboxBase < pbox+nbox)
+ {
+ while ((pboxNext < pbox+nbox) &&
+ (pboxNext->y1 == pboxBase->y1))
+ pboxNext++;
+ pboxTmp = pboxNext;
+ while (pboxTmp != pboxBase)
+ {
+ *pboxNew2++ = *--pboxTmp;
+ }
+ pboxBase = pboxNext;
+ }
+ pboxNew2 -= nbox;
+ pbox = pboxNew2;
+ }
+ }
+ else
+ {
+ /* walk source left to right */
+ reverse = FALSE;
+ }
+
+ ret = (*copyProc) (pSrcDrawable,
+ pDstDrawable,
+ pGC,
+ pbox,
+ nbox,
+ dx, dy,
+ reverse, upsidedown, bitPlane, closure);
+
+ if (pboxNew1)
+ xfree (pboxNew1);
+ if (pboxNew2)
+ xfree (pboxNew2);
+
+ return ret;
+}
+
+RegionPtr
+fbDoCopy (DrawablePtr pSrcDrawable,
+ DrawablePtr pDstDrawable,
+ GCPtr pGC,
+ int xIn,
+ int yIn,
+ int widthSrc,
+ int heightSrc,
+ int xOut,
+ int yOut,
+ fbCopyProc copyProc,
+ Pixel bitPlane,
+ void *closure,
+ Bool *success)
+{
+ RegionPtr prgnSrcClip = NULL; /* may be a new region, or just a copy */
+ Bool freeSrcClip = FALSE;
+ RegionPtr prgnExposed = NULL;
+ RegionRec rgnDst;
+ int dx;
+ int dy;
+ int numRects;
+ int box_x1;
+ int box_y1;
+ int box_x2;
+ int box_y2;
+ Bool fastSrc = FALSE; /* for fast clipping with pixmap source */
+ Bool fastDst = FALSE; /* for fast clipping with one rect dest */
+ Bool fastExpose = FALSE; /* for fast exposures with pixmap source */
+ Bool ret;
+
+ /* Short cut for unmapped windows */
+
+ if (pDstDrawable->type == DRAWABLE_WINDOW &&
+ !((WindowPtr)pDstDrawable)->realized)
+ {
+ if (success)
+ *success = TRUE;
+ return NULL;
+ }
+
+ if ((pSrcDrawable != pDstDrawable) &&
+ pSrcDrawable->pScreen->SourceValidate)
+ {
+ (*pSrcDrawable->pScreen->SourceValidate) (pSrcDrawable, xIn, yIn, widthSrc, heightSrc);
+ }
+
+ /* Compute source clip region */
+ if (pSrcDrawable->type == DRAWABLE_PIXMAP)
+ {
+ if ((pSrcDrawable == pDstDrawable) && (pGC->clientClipType == CT_NONE))
+ prgnSrcClip = fbGetCompositeClip(pGC);
+ else
+ fastSrc = TRUE;
+ }
+ else
+ {
+ if (pGC->subWindowMode == IncludeInferiors)
+ {
+ /*
+ * XFree86 DDX empties the border clip when the
+ * VT is inactive, make sure the region isn't empty
+ */
+ if (!((WindowPtr) pSrcDrawable)->parent &&
+ REGION_NOTEMPTY (pSrcDrawable->pScreen,
+ &((WindowPtr) pSrcDrawable)->borderClip))
+ {
+ /*
+ * special case bitblt from root window in
+ * IncludeInferiors mode; just like from a pixmap
+ */
+ fastSrc = TRUE;
+ }
+ else if ((pSrcDrawable == pDstDrawable) &&
+ (pGC->clientClipType == CT_NONE))
+ {
+ prgnSrcClip = fbGetCompositeClip(pGC);
+ }
+ else
+ {
+ prgnSrcClip = NotClippedByChildren((WindowPtr)pSrcDrawable);
+ freeSrcClip = TRUE;
+ }
+ }
+ else
+ {
+ prgnSrcClip = &((WindowPtr)pSrcDrawable)->clipList;
+ }
+ }
+
+ xIn += pSrcDrawable->x;
+ yIn += pSrcDrawable->y;
+
+ xOut += pDstDrawable->x;
+ yOut += pDstDrawable->y;
+
+ box_x1 = xIn;
+ box_y1 = yIn;
+ box_x2 = xIn + widthSrc;
+ box_y2 = yIn + heightSrc;
+
+ dx = xIn - xOut;
+ dy = yIn - yOut;
+
+ /* Don't create a source region if we are doing a fast clip */
+ if (fastSrc)
+ {
+ RegionPtr cclip;
+
+ fastExpose = TRUE;
+ /*
+ * clip the source; if regions extend beyond the source size,
+ * make sure exposure events get sent
+ */
+ if (box_x1 < pSrcDrawable->x)
+ {
+ box_x1 = pSrcDrawable->x;
+ fastExpose = FALSE;
+ }
+ if (box_y1 < pSrcDrawable->y)
+ {
+ box_y1 = pSrcDrawable->y;
+ fastExpose = FALSE;
+ }
+ if (box_x2 > pSrcDrawable->x + (int) pSrcDrawable->width)
+ {
+ box_x2 = pSrcDrawable->x + (int) pSrcDrawable->width;
+ fastExpose = FALSE;
+ }
+ if (box_y2 > pSrcDrawable->y + (int) pSrcDrawable->height)
+ {
+ box_y2 = pSrcDrawable->y + (int) pSrcDrawable->height;
+ fastExpose = FALSE;
+ }
+
+ /* Translate and clip the dst to the destination composite clip */
+ box_x1 -= dx;
+ box_x2 -= dx;
+ box_y1 -= dy;
+ box_y2 -= dy;
+
+ /* If the destination composite clip is one rectangle we can
+ do the clip directly. Otherwise we have to create a full
+ blown region and call intersect */
+
+ cclip = fbGetCompositeClip(pGC);
+ if (REGION_NUM_RECTS(cclip) == 1)
+ {
+ BoxPtr pBox = REGION_RECTS(cclip);
+
+ if (box_x1 < pBox->x1) box_x1 = pBox->x1;
+ if (box_x2 > pBox->x2) box_x2 = pBox->x2;
+ if (box_y1 < pBox->y1) box_y1 = pBox->y1;
+ if (box_y2 > pBox->y2) box_y2 = pBox->y2;
+ fastDst = TRUE;
+ }
+ }
+
+ /* Check to see if the region is empty */
+ if (box_x1 >= box_x2 || box_y1 >= box_y2)
+ {
+ REGION_NULL(pGC->pScreen, &rgnDst);
+ }
+ else
+ {
+ BoxRec box;
+ box.x1 = box_x1;
+ box.y1 = box_y1;
+ box.x2 = box_x2;
+ box.y2 = box_y2;
+ REGION_INIT(pGC->pScreen, &rgnDst, &box, 1);
+ }
+
+ /* Clip against complex source if needed */
+ if (!fastSrc)
+ {
+ REGION_INTERSECT(pGC->pScreen, &rgnDst, &rgnDst, prgnSrcClip);
+ REGION_TRANSLATE(pGC->pScreen, &rgnDst, -dx, -dy);
+ }
+
+ /* Clip against complex dest if needed */
+ if (!fastDst)
+ {
+ REGION_INTERSECT(pGC->pScreen, &rgnDst, &rgnDst,
+ fbGetCompositeClip(pGC));
+ }
+
+ /* Do bit blitting */
+ numRects = REGION_NUM_RECTS(&rgnDst);
+ if (numRects && widthSrc && heightSrc)
+ ret = fbCopyRegion (pSrcDrawable, pDstDrawable, pGC,
+ &rgnDst, dx, dy, copyProc, bitPlane, closure);
+ else
+ ret = TRUE;
+
+ /* Pixmap sources generate a NoExposed (we return NULL to do this) */
+ if (ret && !fastExpose && pGC->fExpose)
+ prgnExposed = miHandleExposures(pSrcDrawable, pDstDrawable, pGC,
+ xIn - pSrcDrawable->x,
+ yIn - pSrcDrawable->y,
+ widthSrc, heightSrc,
+ xOut - pDstDrawable->x,
+ yOut - pDstDrawable->y,
+ (unsigned long) bitPlane);
+ REGION_UNINIT(pGC->pScreen, &rgnDst);
+ if (freeSrcClip)
+ REGION_DESTROY(pGC->pScreen, prgnSrcClip);
+ fbValidateDrawable (pDstDrawable);
+
+ /* Some users want to allow failure. */
+ if (success)
+ *success = ret;
+
+ return prgnExposed;
+}
\ No newline at end of file
diff --git a/fb/fbcopy_helpers.h b/fb/fbcopy_helpers.h
new file mode 100644
index 0000000..d523e92
--- /dev/null
+++ b/fb/fbcopy_helpers.h
@@ -0,0 +1,52 @@
+/*
+ * Copyright © 1998 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.
+ */
+
+#ifndef _FBCOPY_HELPERS_H_
+#define _FBCOPY_HELPERS_H_
+
+extern _X_EXPORT Bool
+fbCopyRegion (DrawablePtr pSrcDrawable,
+ DrawablePtr pDstDrawable,
+ GCPtr pGC,
+ RegionPtr pDstRegion,
+ int dx,
+ int dy,
+ fbCopyProc copyProc,
+ Pixel bitPlane,
+ void *closure);
+
+extern _X_EXPORT RegionPtr
+fbDoCopy (DrawablePtr pSrcDrawable,
+ DrawablePtr pDstDrawable,
+ GCPtr pGC,
+ int xIn,
+ int yIn,
+ int widthSrc,
+ int heightSrc,
+ int xOut,
+ int yOut,
+ fbCopyProc copyProc,
+ Pixel bitplane,
+ void *closure,
+ Bool *success);
+
+#endif /* _FBCOPY_HELPERS_H_ */
diff --git a/fb/fboverlay.c b/fb/fboverlay.c
index 1432cb6..f90f4c5 100644
--- a/fb/fboverlay.c
+++ b/fb/fboverlay.c
@@ -30,6 +30,7 @@
#include <stdlib.h>
#include "fb.h"
+#include "fbcopy_helpers.h"
#include "fboverlay.h"
#include "shmint.h"
diff --git a/fb/fbwindow.c b/fb/fbwindow.c
index 022a16f..9730b2b 100644
--- a/fb/fbwindow.c
+++ b/fb/fbwindow.c
@@ -27,6 +27,7 @@
#include <stdlib.h>
#include "fb.h"
+#include "fbcopy_helpers.h"
Bool
fbCreateWindow(WindowPtr pWin)
@@ -64,7 +65,7 @@ fbUnmapWindow(WindowPtr pWindow)
return TRUE;
}
-void
+Bool
fbCopyWindowProc (DrawablePtr pSrcDrawable,
DrawablePtr pDstDrawable,
GCPtr pGC,
@@ -113,6 +114,8 @@ fbCopyWindowProc (DrawablePtr pSrcDrawable,
fbFinishAccess (pDstDrawable);
fbFinishAccess (pSrcDrawable);
+
+ return TRUE;
}
void
--
1.6.1.1
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