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Diffstat (limited to 'miext/shadow/shrotpack.h')
| -rw-r--r-- | miext/shadow/shrotpack.h | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/miext/shadow/shrotpack.h b/miext/shadow/shrotpack.h new file mode 100644 index 000000000..ce9b4c561 --- /dev/null +++ b/miext/shadow/shrotpack.h @@ -0,0 +1,182 @@ +/* + * $XFree86: xc/programs/Xserver/miext/shadow/shrotpack.h,v 1.4 2001/10/28 03:34:16 tsi Exp $ + * + * Copyright © 2000 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. + */ + +/* + * Thanks to Daniel Chemko <dchemko@intrinsyc.com> for making the 90 and 180 + * orientations work. + */ + +#include "X.h" +#include "scrnintstr.h" +#include "windowstr.h" +#include "font.h" +#include "dixfontstr.h" +#include "fontstruct.h" +#include "mi.h" +#include "regionstr.h" +#include "globals.h" +#include "gcstruct.h" +#include "shadow.h" +#include "fb.h" + +#define DANDEBUG 0 + +#if ROTATE == 270 + +#define SCRLEFT(x,y,w,h) (pScreen->height - ((y) + (h))) +#define SCRY(x,y,w,h) (x) +#define SCRWIDTH(x,y,w,h) (h) +#define FIRSTSHA(x,y,w,h) (((y) + (h) - 1) * shaStride + (x)) +#define STEPDOWN(x,y,w,h) ((w)--) +#define NEXTY(x,y,w,h) ((x)++) +#define SHASTEPX(stride) -(stride) +#define SHASTEPY(stride) (1) + +#elif ROTATE == 90 + +#define SCRLEFT(x,y,w,h) (y) +#define SCRY(x,y,w,h) (pScreen->width - ((x) + (w)) - 1) +#define SCRWIDTH(x,y,w,h) (h) +#define FIRSTSHA(x,y,w,h) ((y) * shaStride + (x + w - 1)) +#define STEPDOWN(x,y,w,h) ((w)--) +#define NEXTY(x,y,w,h) ((void)(x)) +#define SHASTEPX(stride) (stride) +#define SHASTEPY(stride) (-1) + +#elif ROTATE == 180 + +#define SCRLEFT(x,y,w,h) (pScreen->width - ((x) + (w))) +#define SCRY(x,y,w,h) (pScreen->height - ((y) + (h)) - 1) +#define SCRWIDTH(x,y,w,h) (w) +#define FIRSTSHA(x,y,w,h) ((y + h - 1) * shaStride + (x + w - 1)) +#define STEPDOWN(x,y,w,h) ((h)--) +#define NEXTY(x,y,w,h) ((void)(y)) +#define SHASTEPX(stride) (-1) +#define SHASTEPY(stride) -(stride) + +#else + +#define SCRLEFT(x,y,w,h) (x) +#define SCRY(x,y,w,h) (y) +#define SCRWIDTH(x,y,w,h) (w) +#define FIRSTSHA(x,y,w,h) ((y) * shaStride + (x)) +#define STEPDOWN(x,y,w,h) ((h)--) +#define NEXTY(x,y,w,h) ((y)++) +#define SHASTEPX(stride) (1) +#define SHASTEPY(stride) (stride) + +#endif + +void +FUNC (ScreenPtr pScreen, + shadowBufPtr pBuf) +{ + RegionPtr damage = &pBuf->damage; + PixmapPtr pShadow = pBuf->pPixmap; + int nbox = REGION_NUM_RECTS (damage); + BoxPtr pbox = REGION_RECTS (damage); + FbBits *shaBits; + Data *shaBase, *shaLine, *sha; + FbStride shaStride; + int scrBase, scrLine, scr; + int shaBpp; + int shaXoff, shaYoff; /* XXX assumed to be zero */ + int x, y, w, h, width; + int i; + Data *winBase = NULL, *win; + CARD32 winSize; + + fbGetDrawable (&pShadow->drawable, shaBits, shaStride, shaBpp, shaXoff, shaYoff); + shaBase = (Data *) shaBits; + shaStride = shaStride * sizeof (FbBits) / sizeof (Data); +#if (DANDEBUG > 1) + ErrorF ("-> Entering Shadow Update:\r\n |- Origins: pShadow=%x, pScreen=%x, damage=%x\r\n |- Metrics: shaStride=%d, shaBase=%x, shaBpp=%d\r\n | \n", pShadow, pScreen, damage, shaStride, shaBase, shaBpp); +#endif + while (nbox--) + { + x = pbox->x1; + y = pbox->y1; + w = (pbox->x2 - pbox->x1); + h = pbox->y2 - pbox->y1; + +#if (DANDEBUG > 2) + ErrorF (" |-> Redrawing box - Metrics: X=%d, Y=%d, Width=%d, Height=%d\n", x, y, w, h); +#endif + scrLine = SCRLEFT(x,y,w,h); + shaLine = shaBase + FIRSTSHA(x,y,w,h); + + while (STEPDOWN(x,y,w,h)) + { + winSize = 0; + scrBase = 0; + width = SCRWIDTH(x,y,w,h); + scr = scrLine; + sha = shaLine; +#if (DANDEBUG > 3) + ErrorF (" | |-> StepDown - Metrics: width=%d, scr=%x, sha=%x\n", width, scr, sha); +#endif + while (width) + { + /* how much remains in this window */ + i = scrBase + winSize - scr; + if (i <= 0 || scr < scrBase) + { + winBase = (Data *) (*pBuf->window) (pScreen, + SCRY(x,y,w,h), + scr * sizeof (Data), + SHADOW_WINDOW_WRITE, + &winSize, + pBuf->closure); + if(!winBase) + return; + scrBase = scr; + winSize /= sizeof (Data); + i = winSize; +#if(DANDEBUG > 4) + ErrorF (" | | |-> Starting New Line - Metrics: winBase=%x, scrBase=%x, winSize=%d\r\n | | | Xstride=%d, Ystride=%d, w=%d h=%d\n", winBase, scrBase, winSize, SHASTEPX(shaStride), SHASTEPY(shaStride), w, h); +#endif + } + win = winBase + (scr - scrBase); + if (i > width) + i = width; + width -= i; + scr += i; +#if(DANDEBUG > 5) + ErrorF (" | | |-> Writing Line - Metrics: win=%x, sha=%x\n", win, sha); +#endif + while (i--) + { +#if(DANDEBUG > 6) + ErrorF (" | | |-> Writing Pixel - Metrics: win=%x, sha=%d, remaining=%d\n", win, sha, i); +#endif + *win++ = *sha; + sha += SHASTEPX(shaStride); + } /* i */ + } /* width */ + shaLine += SHASTEPY(shaStride); + NEXTY(x,y,w,h); + } /* STEPDOWN */ + pbox++; + } /* nbox */ +} |