/* * * 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. */ #ifdef HAVE_DIX_CONFIG_H #include <dix-config.h> #endif #include <stdlib.h> #include <X11/X.h> #include "scrnintstr.h" #include "windowstr.h" #include <X11/fonts/font.h> #include "dixfontstr.h" #include <X11/fonts/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 = shadowDamage (pBuf); 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 */ }