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Diffstat (limited to 'mfb/mfbbstore.c')
| -rw-r--r-- | mfb/mfbbstore.c | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/mfb/mfbbstore.c b/mfb/mfbbstore.c new file mode 100644 index 000000000..661ed0827 --- /dev/null +++ b/mfb/mfbbstore.c @@ -0,0 +1,151 @@ +/* $Xorg: mfbbstore.c,v 1.4 2001/02/09 02:05:18 xorgcvs Exp $ */ +/* Combined Purdue/PurduePlus patches, level 2.0, 1/17/89 */ +/* + +Copyright 1987, 1998 The Open Group + +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. + +The above copyright notice and this permission notice shall be included +in all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS +OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. +IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR +OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, +ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR +OTHER DEALINGS IN THE SOFTWARE. + +Except as contained in this notice, the name of The Open Group shall +not be used in advertising or otherwise to promote the sale, use or +other dealings in this Software without prior written authorization +from The Open Group. + +*/ + +#include "mfb.h" +#include "X.h" +#include "mibstore.h" +#include "regionstr.h" +#include "scrnintstr.h" +#include "pixmapstr.h" +#include "windowstr.h" + +/*- + *----------------------------------------------------------------------- + * mfbSaveAreas -- + * Function called by miSaveAreas to actually fetch the areas to be + * saved into the backing pixmap. This is very simple to do, since + * mfbDoBitblt is designed for this very thing. The region to save is + * already destination-relative and we're given the offset to the + * window origin, so we have only to create an array of points of the + * u.l. corners of the boxes in the region translated to the screen + * coordinate system and fetch the screen pixmap out of its devPrivate + * field.... + * + * Results: + * None. + * + * Side Effects: + * Data are copied from the screen into the pixmap. + * + *----------------------------------------------------------------------- + */ +void +mfbSaveAreas(pPixmap, prgnSave, xorg, yorg, pWin) + PixmapPtr pPixmap; /* Backing pixmap */ + RegionPtr prgnSave; /* Region to save (pixmap-relative) */ + int xorg; /* X origin of region */ + int yorg; /* Y origin of region */ + WindowPtr pWin; +{ + register DDXPointPtr pPt; + DDXPointPtr pPtsInit; + register BoxPtr pBox; + register int numRects; + + numRects = REGION_NUM_RECTS(prgnSave); + pPtsInit = (DDXPointPtr)ALLOCATE_LOCAL(numRects * sizeof(DDXPointRec)); + if (!pPtsInit) + return; + + pBox = REGION_RECTS(prgnSave); + pPt = pPtsInit; + while (numRects--) + { + pPt->x = pBox->x1 + xorg; + pPt->y = pBox->y1 + yorg; + pPt++; + pBox++; + } + + mfbDoBitblt((DrawablePtr)pPixmap->drawable.pScreen->devPrivate, + (DrawablePtr)pPixmap, + GXcopy, + prgnSave, + pPtsInit); + + DEALLOCATE_LOCAL(pPtsInit); +} + +/*- + *----------------------------------------------------------------------- + * mfbRestoreAreas -- + * Function called by miRestoreAreas to actually fetch the areas to be + * restored from the backing pixmap. This is very simple to do, since + * mfbDoBitblt is designed for this very thing. The region to restore is + * already destination-relative and we're given the offset to the + * window origin, so we have only to create an array of points of the + * u.l. corners of the boxes in the region translated to the pixmap + * coordinate system and fetch the screen pixmap out of its devPrivate + * field.... + * + * Results: + * None. + * + * Side Effects: + * Data are copied from the pixmap into the screen. + * + *----------------------------------------------------------------------- + */ +void +mfbRestoreAreas(pPixmap, prgnRestore, xorg, yorg, pWin) + PixmapPtr pPixmap; /* Backing pixmap */ + RegionPtr prgnRestore; /* Region to restore (screen-relative)*/ + int xorg; /* X origin of window */ + int yorg; /* Y origin of window */ + WindowPtr pWin; +{ + register DDXPointPtr pPt; + DDXPointPtr pPtsInit; + register BoxPtr pBox; + register int numRects; + + numRects = REGION_NUM_RECTS(prgnRestore); + pPtsInit = (DDXPointPtr)ALLOCATE_LOCAL(numRects*sizeof(DDXPointRec)); + if (!pPtsInit) + return; + + pBox = REGION_RECTS(prgnRestore); + pPt = pPtsInit; + while (numRects--) + { + pPt->x = pBox->x1 - xorg; + pPt->y = pBox->y1 - yorg; + pPt++; + pBox++; + } + + mfbDoBitblt((DrawablePtr)pPixmap, + (DrawablePtr)pPixmap->drawable.pScreen->devPrivate, + GXcopy, + prgnRestore, + pPtsInit); + + DEALLOCATE_LOCAL(pPtsInit); +} |