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-rw-r--r--miext/shadow/shadow.c1525
1 files changed, 1525 insertions, 0 deletions
diff --git a/miext/shadow/shadow.c b/miext/shadow/shadow.c
new file mode 100644
index 000000000..60a1555d8
--- /dev/null
+++ b/miext/shadow/shadow.c
@@ -0,0 +1,1525 @@
+/*
+ * $XFree86: xc/programs/Xserver/miext/shadow/shadow.c,v 1.13 2002/12/02 20:37:23 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.
+ */
+
+
+#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"
+
+typedef struct _shadowGCPriv {
+ GCOps *ops;
+ GCFuncs *funcs;
+} shadowGCPrivRec, *shadowGCPrivPtr;
+
+int shadowScrPrivateIndex;
+int shadowGCPrivateIndex;
+int shadowGeneration;
+
+#define shadowGetGCPriv(pGC) \
+ ((shadowGCPrivPtr) (pGC)->devPrivates[shadowGCPrivateIndex].ptr)
+#define shadowGCPriv(pGC) \
+ shadowGCPrivPtr pGCPriv = shadowGetGCPriv(pGC)
+
+#define wrap(priv, real, mem, func) {\
+ priv->mem = real->mem; \
+ real->mem = func; \
+}
+
+#define unwrap(priv, real, mem) {\
+ real->mem = priv->mem; \
+}
+
+static void
+shadowRedisplay (ScreenPtr pScreen)
+{
+ shadowScrPriv(pScreen);
+ shadowBufPtr pBuf;
+
+ for (pBuf = pScrPriv->pBuf; pBuf; pBuf = pBuf->pNext)
+ {
+ if (REGION_NOTEMPTY (pScreen, &pBuf->damage))
+ {
+ REGION_INTERSECT (pScreen, &pBuf->damage, &pBuf->damage,
+ &WindowTable[pScreen->myNum]->borderClip);
+ (*pBuf->update) (pScreen, pBuf);
+ REGION_EMPTY (pScreen, &pBuf->damage);
+ }
+ }
+}
+
+static void
+shadowBlockHandler (pointer data,
+ OSTimePtr pTimeout,
+ pointer pRead)
+{
+ ScreenPtr pScreen = (ScreenPtr) data;
+
+ shadowRedisplay (pScreen);
+}
+
+static void
+shadowWakeupHandler (pointer data, int i, pointer LastSelectMask)
+{
+}
+
+static void
+shadowDamageRegion (WindowPtr pWindow, RegionPtr pRegion)
+{
+ shadowBufPtr pBuf = shadowFindBuf (pWindow);
+
+ if (!pBuf)
+ abort ();
+
+ REGION_INTERSECT(pWindow->drawable.pScreen, pRegion, pRegion,
+ &pWindow->borderClip);
+ REGION_UNION(pWindow->drawable.pScreen, &pBuf->damage, &pBuf->damage,
+ pRegion);
+#ifdef ALWAYS_DISPLAY
+ shadowRedisplay (pWindow->drawable.pScreen);
+#endif
+}
+
+static void
+shadowDamageBox (WindowPtr pWindow, BoxPtr pBox)
+{
+ RegionRec region;
+
+ REGION_INIT (pWindow->drawable.pScreen, &region, pBox, 1);
+ shadowDamageRegion (pWindow, &region);
+}
+
+static void
+shadowDamageRect (WindowPtr pWindow, int x, int y, int w, int h)
+{
+ BoxRec box;
+
+ x += pWindow->drawable.x;
+ y += pWindow->drawable.y;
+ box.x1 = x;
+ box.x2 = x + w;
+ box.y1 = y;
+ box.y2 = y + h;
+ shadowDamageBox (pWindow, &box);
+}
+
+static void shadowValidateGC(GCPtr, unsigned long, DrawablePtr);
+static void shadowChangeGC(GCPtr, unsigned long);
+static void shadowCopyGC(GCPtr, unsigned long, GCPtr);
+static void shadowDestroyGC(GCPtr);
+static void shadowChangeClip(GCPtr, int, pointer, int);
+static void shadowDestroyClip(GCPtr);
+static void shadowCopyClip(GCPtr, GCPtr);
+
+GCFuncs shadowGCFuncs = {
+ shadowValidateGC, shadowChangeGC, shadowCopyGC, shadowDestroyGC,
+ shadowChangeClip, shadowDestroyClip, shadowCopyClip
+};
+
+extern GCOps shadowGCOps;
+
+static Bool
+shadowCreateGC(GCPtr pGC)
+{
+ ScreenPtr pScreen = pGC->pScreen;
+ shadowScrPriv(pScreen);
+ shadowGCPriv(pGC);
+ Bool ret;
+
+ unwrap (pScrPriv, pScreen, CreateGC);
+ if((ret = (*pScreen->CreateGC) (pGC))) {
+ pGCPriv->ops = NULL;
+ pGCPriv->funcs = pGC->funcs;
+ pGC->funcs = &shadowGCFuncs;
+ }
+ wrap (pScrPriv, pScreen, CreateGC, shadowCreateGC);
+
+ return ret;
+}
+
+void
+shadowWrapGC (GCPtr pGC)
+{
+ shadowGCPriv(pGC);
+
+ pGCPriv->ops = NULL;
+ pGCPriv->funcs = pGC->funcs;
+ pGC->funcs = &shadowGCFuncs;
+}
+
+void
+shadowUnwrapGC (GCPtr pGC)
+{
+ shadowGCPriv(pGC);
+
+ pGC->funcs = pGCPriv->funcs;
+ if (pGCPriv->ops)
+ pGC->ops = pGCPriv->ops;
+}
+
+#define SHADOW_GC_OP_PROLOGUE(pGC, pDraw) \
+ shadowGCPriv(pGC); \
+ GCFuncs *oldFuncs = pGC->funcs; \
+ unwrap(pGCPriv, pGC, funcs); \
+ unwrap(pGCPriv, pGC, ops); \
+
+#define SHADOW_GC_OP_EPILOGUE(pGC, pDraw) \
+ wrap(pGCPriv, pGC, funcs, oldFuncs); \
+ wrap(pGCPriv, pGC, ops, &shadowGCOps)
+
+#define SHADOW_GC_FUNC_PROLOGUE(pGC) \
+ shadowGCPriv(pGC); \
+ unwrap(pGCPriv, pGC, funcs); \
+ if (pGCPriv->ops) unwrap(pGCPriv, pGC, ops)
+
+#define SHADOW_GC_FUNC_EPILOGUE(pGC) \
+ wrap(pGCPriv, pGC, funcs, &shadowGCFuncs); \
+ if (pGCPriv->ops) wrap(pGCPriv, pGC, ops, &shadowGCOps)
+
+static void
+shadowValidateGC(
+ GCPtr pGC,
+ unsigned long changes,
+ DrawablePtr pDraw
+){
+ SHADOW_GC_FUNC_PROLOGUE (pGC);
+ (*pGC->funcs->ValidateGC)(pGC, changes, pDraw);
+ if(pDraw->type == DRAWABLE_WINDOW)
+ pGCPriv->ops = pGC->ops; /* just so it's not NULL */
+ else
+ pGCPriv->ops = NULL;
+ SHADOW_GC_FUNC_EPILOGUE (pGC);
+}
+
+static void
+shadowDestroyGC(GCPtr pGC)
+{
+ SHADOW_GC_FUNC_PROLOGUE (pGC);
+ (*pGC->funcs->DestroyGC)(pGC);
+ SHADOW_GC_FUNC_EPILOGUE (pGC);
+}
+
+static void
+shadowChangeGC (
+ GCPtr pGC,
+ unsigned long mask
+){
+ SHADOW_GC_FUNC_PROLOGUE (pGC);
+ (*pGC->funcs->ChangeGC) (pGC, mask);
+ SHADOW_GC_FUNC_EPILOGUE (pGC);
+}
+
+static void
+shadowCopyGC (
+ GCPtr pGCSrc,
+ unsigned long mask,
+ GCPtr pGCDst
+){
+ SHADOW_GC_FUNC_PROLOGUE (pGCDst);
+ (*pGCDst->funcs->CopyGC) (pGCSrc, mask, pGCDst);
+ SHADOW_GC_FUNC_EPILOGUE (pGCDst);
+}
+
+static void
+shadowChangeClip (
+ GCPtr pGC,
+ int type,
+ pointer pvalue,
+ int nrects
+){
+ SHADOW_GC_FUNC_PROLOGUE (pGC);
+ (*pGC->funcs->ChangeClip) (pGC, type, pvalue, nrects);
+ SHADOW_GC_FUNC_EPILOGUE (pGC);
+}
+
+static void
+shadowCopyClip(GCPtr pgcDst, GCPtr pgcSrc)
+{
+ SHADOW_GC_FUNC_PROLOGUE (pgcDst);
+ (* pgcDst->funcs->CopyClip)(pgcDst, pgcSrc);
+ SHADOW_GC_FUNC_EPILOGUE (pgcDst);
+}
+
+static void
+shadowDestroyClip(GCPtr pGC)
+{
+ SHADOW_GC_FUNC_PROLOGUE (pGC);
+ (* pGC->funcs->DestroyClip)(pGC);
+ SHADOW_GC_FUNC_EPILOGUE (pGC);
+}
+
+#define IS_VISIBLE(pWin) 1
+
+
+#define TRIM_BOX(box, pGC) { \
+ BoxPtr extents = &pGC->pCompositeClip->extents;\
+ if(box.x1 < extents->x1) box.x1 = extents->x1; \
+ if(box.x2 > extents->x2) box.x2 = extents->x2; \
+ if(box.y1 < extents->y1) box.y1 = extents->y1; \
+ if(box.y2 > extents->y2) box.y2 = extents->y2; \
+ }
+
+#define TRANSLATE_BOX(box, pDraw) { \
+ box.x1 += pDraw->x; \
+ box.x2 += pDraw->x; \
+ box.y1 += pDraw->y; \
+ box.y2 += pDraw->y; \
+ }
+
+#define TRIM_AND_TRANSLATE_BOX(box, pDraw, pGC) { \
+ TRANSLATE_BOX(box, pDraw); \
+ TRIM_BOX(box, pGC); \
+ }
+
+#define BOX_NOT_EMPTY(box) \
+ (((box.x2 - box.x1) > 0) && ((box.y2 - box.y1) > 0))
+
+#ifdef RENDER
+static void
+shadowComposite (CARD8 op,
+ PicturePtr pSrc,
+ PicturePtr pMask,
+ PicturePtr pDst,
+ INT16 xSrc,
+ INT16 ySrc,
+ INT16 xMask,
+ INT16 yMask,
+ INT16 xDst,
+ INT16 yDst,
+ CARD16 width,
+ CARD16 height)
+{
+ ScreenPtr pScreen = pDst->pDrawable->pScreen;
+ PictureScreenPtr ps = GetPictureScreen(pScreen);
+ shadowScrPriv(pScreen);
+
+ unwrap (pScrPriv, ps, Composite);
+ (*ps->Composite) (op,
+ pSrc,
+ pMask,
+ pDst,
+ xSrc,
+ ySrc,
+ xMask,
+ yMask,
+ xDst,
+ yDst,
+ width,
+ height);
+ wrap (pScrPriv, ps, Composite, shadowComposite);
+ if (pDst->pDrawable->type == DRAWABLE_WINDOW)
+ shadowDamageRect ((WindowPtr) pDst->pDrawable, xDst, yDst,
+ width, height);
+}
+
+static void
+shadowGlyphs (CARD8 op,
+ PicturePtr pSrc,
+ PicturePtr pDst,
+ PictFormatPtr maskFormat,
+ INT16 xSrc,
+ INT16 ySrc,
+ int nlist,
+ GlyphListPtr list,
+ GlyphPtr *glyphs)
+{
+ ScreenPtr pScreen = pDst->pDrawable->pScreen;
+ PictureScreenPtr ps = GetPictureScreen(pScreen);
+ shadowScrPriv(pScreen);
+ int x, y;
+ int n;
+ GlyphPtr glyph;
+
+ unwrap (pScrPriv, ps, Glyphs);
+ (*ps->Glyphs) (op, pSrc, pDst, maskFormat, xSrc, ySrc, nlist, list, glyphs);
+ wrap (pScrPriv, ps, Glyphs, shadowGlyphs);
+ if (pDst->pDrawable->type == DRAWABLE_WINDOW)
+ {
+ x = xSrc;
+ y = ySrc;
+ while (nlist--)
+ {
+ x += list->xOff;
+ y += list->yOff;
+ n = list->len;
+ while (n--)
+ {
+ glyph = *glyphs++;
+ shadowDamageRect ((WindowPtr) pDst->pDrawable,
+ x - glyph->info.x,
+ y - glyph->info.y,
+ glyph->info.width,
+ glyph->info.height);
+ x += glyph->info.xOff;
+ y += glyph->info.yOff;
+ }
+ list++;
+ }
+ }
+}
+#endif
+
+/**********************************************************/
+
+
+static void
+shadowFillSpans(
+ DrawablePtr pDraw,
+ GC *pGC,
+ int nInit,
+ DDXPointPtr pptInit,
+ int *pwidthInit,
+ int fSorted
+){
+ SHADOW_GC_OP_PROLOGUE(pGC, pDraw);
+
+ if(IS_VISIBLE(pDraw) && nInit) {
+ DDXPointPtr ppt = pptInit;
+ int *pwidth = pwidthInit;
+ int i = nInit;
+ BoxRec box;
+
+ box.x1 = ppt->x;
+ box.x2 = box.x1 + *pwidth;
+ box.y2 = box.y1 = ppt->y;
+
+ while(--i) {
+ ppt++;
+ pwidthInit++;
+ if(box.x1 > ppt->x) box.x1 = ppt->x;
+ if(box.x2 < (ppt->x + *pwidth))
+ box.x2 = ppt->x + *pwidth;
+ if(box.y1 > ppt->y) box.y1 = ppt->y;
+ else if(box.y2 < ppt->y) box.y2 = ppt->y;
+ }
+
+ box.y2++;
+
+ (*pGC->ops->FillSpans)(pDraw, pGC, nInit, pptInit, pwidthInit, fSorted);
+
+ TRIM_AND_TRANSLATE_BOX(box, pDraw, pGC);
+ if(BOX_NOT_EMPTY(box))
+ shadowDamageBox ((WindowPtr) pDraw, &box);
+ } else
+ (*pGC->ops->FillSpans)(pDraw, pGC, nInit, pptInit, pwidthInit, fSorted);
+
+ SHADOW_GC_OP_EPILOGUE(pGC, pDraw);
+}
+
+static void
+shadowSetSpans(
+ DrawablePtr pDraw,
+ GCPtr pGC,
+ char *pcharsrc,
+ DDXPointPtr pptInit,
+ int *pwidthInit,
+ int nspans,
+ int fSorted
+){
+ SHADOW_GC_OP_PROLOGUE(pGC, pDraw);
+
+ if(IS_VISIBLE(pDraw) && nspans) {
+ DDXPointPtr ppt = pptInit;
+ int *pwidth = pwidthInit;
+ int i = nspans;
+ BoxRec box;
+
+ box.x1 = ppt->x;
+ box.x2 = box.x1 + *pwidth;
+ box.y2 = box.y1 = ppt->y;
+
+ while(--i) {
+ ppt++;
+ pwidth++;
+ if(box.x1 > ppt->x) box.x1 = ppt->x;
+ if(box.x2 < (ppt->x + *pwidth))
+ box.x2 = ppt->x + *pwidth;
+ if(box.y1 > ppt->y) box.y1 = ppt->y;
+ else if(box.y2 < ppt->y) box.y2 = ppt->y;
+ }
+
+ box.y2++;
+
+ (*pGC->ops->SetSpans)(pDraw, pGC, pcharsrc, pptInit,
+ pwidthInit, nspans, fSorted);
+
+ TRIM_AND_TRANSLATE_BOX(box, pDraw, pGC);
+ if(BOX_NOT_EMPTY(box))
+ shadowDamageBox ((WindowPtr) pDraw, &box);
+ } else
+ (*pGC->ops->SetSpans)(pDraw, pGC, pcharsrc, pptInit,
+ pwidthInit, nspans, fSorted);
+
+ SHADOW_GC_OP_EPILOGUE(pGC, pDraw);
+}
+
+static void
+shadowPutImage(
+ DrawablePtr pDraw,
+ GCPtr pGC,
+ int depth,
+ int x, int y, int w, int h,
+ int leftPad,
+ int format,
+ char *pImage
+){
+ SHADOW_GC_OP_PROLOGUE(pGC, pDraw);
+ (*pGC->ops->PutImage)(pDraw, pGC, depth, x, y, w, h,
+ leftPad, format, pImage);
+ SHADOW_GC_OP_EPILOGUE(pGC, pDraw);
+
+ if(IS_VISIBLE(pDraw)) {
+ BoxRec box;
+
+ box.x1 = x + pDraw->x;
+ box.x2 = box.x1 + w;
+ box.y1 = y + pDraw->y;
+ box.y2 = box.y1 + h;
+
+ TRIM_BOX(box, pGC);
+ if(BOX_NOT_EMPTY(box))
+ shadowDamageBox ((WindowPtr) pDraw, &box);
+ }
+}
+
+static RegionPtr
+shadowCopyArea(
+ DrawablePtr pSrc,
+ DrawablePtr pDst,
+ GC *pGC,
+ int srcx, int srcy,
+ int width, int height,
+ int dstx, int dsty
+){
+ RegionPtr ret;
+ SHADOW_GC_OP_PROLOGUE(pGC, pDst);
+ ret = (*pGC->ops->CopyArea)(pSrc, pDst,
+ pGC, srcx, srcy, width, height, dstx, dsty);
+ SHADOW_GC_OP_EPILOGUE(pGC, pDst);
+
+ if(IS_VISIBLE(pDst)) {
+ BoxRec box;
+
+ box.x1 = dstx + pDst->x;
+ box.x2 = box.x1 + width;
+ box.y1 = dsty + pDst->y;
+ box.y2 = box.y1 + height;
+
+ TRIM_BOX(box, pGC);
+ if(BOX_NOT_EMPTY(box))
+ shadowDamageBox ((WindowPtr) pDst, &box);
+ }
+
+ return ret;
+}
+
+static RegionPtr
+shadowCopyPlane(
+ DrawablePtr pSrc,
+ DrawablePtr pDst,
+ GCPtr pGC,
+ int srcx, int srcy,
+ int width, int height,
+ int dstx, int dsty,
+ unsigned long bitPlane
+){
+ RegionPtr ret;
+ SHADOW_GC_OP_PROLOGUE(pGC, pDst);
+ ret = (*pGC->ops->CopyPlane)(pSrc, pDst,
+ pGC, srcx, srcy, width, height, dstx, dsty, bitPlane);
+ SHADOW_GC_OP_EPILOGUE(pGC, pDst);
+
+ if(IS_VISIBLE(pDst)) {
+ BoxRec box;
+
+ box.x1 = dstx + pDst->x;
+ box.x2 = box.x1 + width;
+ box.y1 = dsty + pDst->y;
+ box.y2 = box.y1 + height;
+
+ TRIM_BOX(box, pGC);
+ if(BOX_NOT_EMPTY(box))
+ shadowDamageBox ((WindowPtr) pDst, &box);
+ }
+
+ return ret;
+}
+
+static void
+shadowPolyPoint(
+ DrawablePtr pDraw,
+ GCPtr pGC,
+ int mode,
+ int npt,
+ xPoint *pptInit
+){
+ SHADOW_GC_OP_PROLOGUE(pGC, pDraw);
+ (*pGC->ops->PolyPoint)(pDraw, pGC, mode, npt, pptInit);
+ SHADOW_GC_OP_EPILOGUE(pGC, pDraw);
+
+ if(IS_VISIBLE(pDraw) && npt) {
+ BoxRec box;
+
+ box.x2 = box.x1 = pptInit->x;
+ box.y2 = box.y1 = pptInit->y;
+
+ /* this could be slow if the points were spread out */
+
+ while(--npt) {
+ pptInit++;
+ if(box.x1 > pptInit->x) box.x1 = pptInit->x;
+ else if(box.x2 < pptInit->x) box.x2 = pptInit->x;
+ if(box.y1 > pptInit->y) box.y1 = pptInit->y;
+ else if(box.y2 < pptInit->y) box.y2 = pptInit->y;
+ }
+
+ box.x2++;
+ box.y2++;
+
+ TRIM_AND_TRANSLATE_BOX(box, pDraw, pGC);
+ if(BOX_NOT_EMPTY(box))
+ shadowDamageBox ((WindowPtr) pDraw, &box);
+ }
+}
+
+static void
+shadowPolylines(
+ DrawablePtr pDraw,
+ GCPtr pGC,
+ int mode,
+ int npt,
+ DDXPointPtr pptInit
+){
+ SHADOW_GC_OP_PROLOGUE(pGC, pDraw);
+ (*pGC->ops->Polylines)(pDraw, pGC, mode, npt, pptInit);
+ SHADOW_GC_OP_EPILOGUE(pGC, pDraw);
+
+
+ if(IS_VISIBLE(pDraw) && npt) {
+ BoxRec box;
+ int extra = pGC->lineWidth >> 1;
+
+ box.x2 = box.x1 = pptInit->x;
+ box.y2 = box.y1 = pptInit->y;
+
+ if(npt > 1) {
+ if(pGC->joinStyle == JoinMiter)
+ extra = 6 * pGC->lineWidth;
+ else if(pGC->capStyle == CapProjecting)
+ extra = pGC->lineWidth;
+ }
+
+ if(mode == CoordModePrevious) {
+ int x = box.x1;
+ int y = box.y1;
+ while(--npt) {
+ pptInit++;
+ x += pptInit->x;
+ y += pptInit->y;
+ if(box.x1 > x) box.x1 = x;
+ else if(box.x2 < x) box.x2 = x;
+ if(box.y1 > y) box.y1 = y;
+ else if(box.y2 < y) box.y2 = y;
+ }
+ } else {
+ while(--npt) {
+ pptInit++;
+ if(box.x1 > pptInit->x) box.x1 = pptInit->x;
+ else if(box.x2 < pptInit->x) box.x2 = pptInit->x;
+ if(box.y1 > pptInit->y) box.y1 = pptInit->y;
+ else if(box.y2 < pptInit->y) box.y2 = pptInit->y;
+ }
+ }
+
+ box.x2++;
+ box.y2++;
+
+ if(extra) {
+ box.x1 -= extra;
+ box.x2 += extra;
+ box.y1 -= extra;
+ box.y2 += extra;
+ }
+
+ TRIM_AND_TRANSLATE_BOX(box, pDraw, pGC);
+ if(BOX_NOT_EMPTY(box))
+ shadowDamageBox ((WindowPtr) pDraw, &box);
+ }
+}
+
+static void
+shadowPolySegment(
+ DrawablePtr pDraw,
+ GCPtr pGC,
+ int nseg,
+ xSegment *pSeg
+){
+ SHADOW_GC_OP_PROLOGUE(pGC, pDraw);
+ (*pGC->ops->PolySegment)(pDraw, pGC, nseg, pSeg);
+ SHADOW_GC_OP_EPILOGUE(pGC, pDraw);
+
+ if(IS_VISIBLE(pDraw) && nseg) {
+ BoxRec box;
+ int extra = pGC->lineWidth;
+
+ if(pGC->capStyle != CapProjecting)
+ extra >>= 1;
+
+ if(pSeg->x2 > pSeg->x1) {
+ box.x1 = pSeg->x1;
+ box.x2 = pSeg->x2;
+ } else {
+ box.x2 = pSeg->x1;
+ box.x1 = pSeg->x2;
+ }
+
+ if(pSeg->y2 > pSeg->y1) {
+ box.y1 = pSeg->y1;
+ box.y2 = pSeg->y2;
+ } else {
+ box.y2 = pSeg->y1;
+ box.y1 = pSeg->y2;
+ }
+
+ while(--nseg) {
+ pSeg++;
+ if(pSeg->x2 > pSeg->x1) {
+ if(pSeg->x1 < box.x1) box.x1 = pSeg->x1;
+ if(pSeg->x2 > box.x2) box.x2 = pSeg->x2;
+ } else {
+ if(pSeg->x2 < box.x1) box.x1 = pSeg->x2;
+ if(pSeg->x1 > box.x2) box.x2 = pSeg->x1;
+ }
+ if(pSeg->y2 > pSeg->y1) {
+ if(pSeg->y1 < box.y1) box.y1 = pSeg->y1;
+ if(pSeg->y2 > box.y2) box.y2 = pSeg->y2;
+ } else {
+ if(pSeg->y2 < box.y1) box.y1 = pSeg->y2;
+ if(pSeg->y1 > box.y2) box.y2 = pSeg->y1;
+ }
+ }
+
+ box.x2++;
+ box.y2++;
+
+ if(extra) {
+ box.x1 -= extra;
+ box.x2 += extra;
+ box.y1 -= extra;
+ box.y2 += extra;
+ }
+
+ TRIM_AND_TRANSLATE_BOX(box, pDraw, pGC);
+ if(BOX_NOT_EMPTY(box))
+ shadowDamageBox ((WindowPtr) pDraw, &box);
+ }
+}
+
+static void
+shadowPolyRectangle(
+ DrawablePtr pDraw,
+ GCPtr pGC,
+ int nRects,
+ xRectangle *pRects
+){
+ SHADOW_GC_OP_PROLOGUE(pGC, pDraw);
+ (*pGC->ops->PolyRectangle)(pDraw, pGC, nRects, pRects);
+ SHADOW_GC_OP_EPILOGUE(pGC, pDraw);
+
+ if(IS_VISIBLE(pDraw) && nRects)
+ {
+ BoxRec box;
+ int offset1, offset2, offset3;
+
+ offset2 = pGC->lineWidth;
+ if(!offset2) offset2 = 1;
+ offset1 = offset2 >> 1;
+ offset3 = offset2 - offset1;
+
+ while(nRects--)
+ {
+ box.x1 = pRects->x - offset1;
+ box.y1 = pRects->y - offset1;
+ box.x2 = box.x1 + pRects->width + offset2;
+ box.y2 = box.y1 + offset2;
+ TRIM_AND_TRANSLATE_BOX(box, pDraw, pGC);
+ if(BOX_NOT_EMPTY(box))
+ shadowDamageBox ((WindowPtr) pDraw, &box);
+
+ box.x1 = pRects->x - offset1;
+ box.y1 = pRects->y + offset3;
+ box.x2 = box.x1 + offset2;
+ box.y2 = box.y1 + pRects->height - offset2;
+ TRIM_AND_TRANSLATE_BOX(box, pDraw, pGC);
+ if(BOX_NOT_EMPTY(box))
+ shadowDamageBox ((WindowPtr) pDraw, &box);
+
+ box.x1 = pRects->x + pRects->width - offset1;
+ box.y1 = pRects->y + offset3;
+ box.x2 = box.x1 + offset2;
+ box.y2 = box.y1 + pRects->height - offset2;
+ TRIM_AND_TRANSLATE_BOX(box, pDraw, pGC);
+ if(BOX_NOT_EMPTY(box))
+ shadowDamageBox ((WindowPtr) pDraw, &box);
+
+ box.x1 = pRects->x - offset1;
+ box.y1 = pRects->y + pRects->height - offset1;
+ box.x2 = box.x1 + pRects->width + offset2;
+ box.y2 = box.y1 + offset2;
+ TRIM_AND_TRANSLATE_BOX(box, pDraw, pGC);
+ if(BOX_NOT_EMPTY(box))
+ shadowDamageBox ((WindowPtr) pDraw, &box);
+
+ pRects++;
+ }
+ }
+ }
+
+static void
+shadowPolyArc(
+ DrawablePtr pDraw,
+ GCPtr pGC,
+ int narcs,
+ xArc *parcs
+){
+ SHADOW_GC_OP_PROLOGUE(pGC, pDraw);
+ (*pGC->ops->PolyArc)(pDraw, pGC, narcs, parcs);
+ SHADOW_GC_OP_EPILOGUE(pGC, pDraw);
+
+ if(IS_VISIBLE(pDraw) && narcs) {
+ int extra = pGC->lineWidth >> 1;
+ BoxRec box;
+
+ box.x1 = parcs->x;
+ box.x2 = box.x1 + parcs->width;
+ box.y1 = parcs->y;
+ box.y2 = box.y1 + parcs->height;
+
+ /* should I break these up instead ? */
+
+ while(--narcs) {
+ parcs++;
+ if(box.x1 > parcs->x) box.x1 = parcs->x;
+ if(box.x2 < (parcs->x + parcs->width))
+ box.x2 = parcs->x + parcs->width;
+ if(box.y1 > parcs->y) box.y1 = parcs->y;
+ if(box.y2 < (parcs->y + parcs->height))
+ box.y2 = parcs->y + parcs->height;
+ }
+
+ if(extra) {
+ box.x1 -= extra;
+ box.x2 += extra;
+ box.y1 -= extra;
+ box.y2 += extra;
+ }
+
+ box.x2++;
+ box.y2++;
+
+ TRIM_AND_TRANSLATE_BOX(box, pDraw, pGC);
+ if(BOX_NOT_EMPTY(box))
+ shadowDamageBox ((WindowPtr) pDraw, &box);
+ }
+}
+
+static void
+shadowFillPolygon(
+ DrawablePtr pDraw,
+ GCPtr pGC,
+ int shape,
+ int mode,
+ int count,
+ DDXPointPtr pptInit
+){
+ SHADOW_GC_OP_PROLOGUE(pGC, pDraw);
+
+ if(IS_VISIBLE(pDraw) && (count > 2)) {
+ DDXPointPtr ppt = pptInit;
+ int i = count;
+ BoxRec box;
+
+ box.x2 = box.x1 = ppt->x;
+ box.y2 = box.y1 = ppt->y;
+
+ if(mode != CoordModeOrigin) {
+ int x = box.x1;
+ int y = box.y1;
+ while(--i) {
+ ppt++;
+ x += ppt->x;
+ y += ppt->y;
+ if(box.x1 > x) box.x1 = x;
+ else if(box.x2 < x) box.x2 = x;
+ if(box.y1 > y) box.y1 = y;
+ else if(box.y2 < y) box.y2 = y;
+ }
+ } else {
+ while(--i) {
+ ppt++;
+ if(box.x1 > ppt->x) box.x1 = ppt->x;
+ else if(box.x2 < ppt->x) box.x2 = ppt->x;
+ if(box.y1 > ppt->y) box.y1 = ppt->y;
+ else if(box.y2 < ppt->y) box.y2 = ppt->y;
+ }
+ }
+
+ box.x2++;
+ box.y2++;
+
+ (*pGC->ops->FillPolygon)(pDraw, pGC, shape, mode, count, pptInit);
+
+ TRIM_AND_TRANSLATE_BOX(box, pDraw, pGC);
+ if(BOX_NOT_EMPTY(box))
+ shadowDamageBox ((WindowPtr) pDraw, &box);
+ } else
+ (*pGC->ops->FillPolygon)(pDraw, pGC, shape, mode, count, pptInit);
+
+ SHADOW_GC_OP_EPILOGUE(pGC, pDraw);
+}
+
+
+static void
+shadowPolyFillRect(
+ DrawablePtr pDraw,
+ GCPtr pGC,
+ int nRectsInit,
+ xRectangle *pRectsInit
+){
+ SHADOW_GC_OP_PROLOGUE(pGC, pDraw);
+
+ if(IS_VISIBLE(pDraw) && nRectsInit) {
+ BoxRec box;
+ xRectangle *pRects = pRectsInit;
+ int nRects = nRectsInit;
+
+ box.x1 = pRects->x;
+ box.x2 = box.x1 + pRects->width;
+ box.y1 = pRects->y;
+ box.y2 = box.y1 + pRects->height;
+
+ while(--nRects) {
+ pRects++;
+ if(box.x1 > pRects->x) box.x1 = pRects->x;
+ if(box.x2 < (pRects->x + pRects->width))
+ box.x2 = pRects->x + pRects->width;
+ if(box.y1 > pRects->y) box.y1 = pRects->y;
+ if(box.y2 < (pRects->y + pRects->height))
+ box.y2 = pRects->y + pRects->height;
+ }
+
+ /* cfb messes with the pRectsInit so we have to do our
+ calculations first */
+
+ (*pGC->ops->PolyFillRect)(pDraw, pGC, nRectsInit, pRectsInit);
+
+ TRIM_AND_TRANSLATE_BOX(box, pDraw, pGC);
+ if(BOX_NOT_EMPTY(box))
+ shadowDamageBox ((WindowPtr) pDraw, &box);
+ } else
+ (*pGC->ops->PolyFillRect)(pDraw, pGC, nRectsInit, pRectsInit);
+
+ SHADOW_GC_OP_EPILOGUE(pGC, pDraw);
+}
+
+
+static void
+shadowPolyFillArc(
+ DrawablePtr pDraw,
+ GCPtr pGC,
+ int narcs,
+ xArc *parcs
+){
+ SHADOW_GC_OP_PROLOGUE(pGC, pDraw);
+ (*pGC->ops->PolyFillArc)(pDraw, pGC, narcs, parcs);
+ SHADOW_GC_OP_EPILOGUE(pGC, pDraw);
+
+ if(IS_VISIBLE(pDraw) && narcs) {
+ BoxRec box;
+
+ box.x1 = parcs->x;
+ box.x2 = box.x1 + parcs->width;
+ box.y1 = parcs->y;
+ box.y2 = box.y1 + parcs->height;
+
+ /* should I break these up instead ? */
+
+ while(--narcs) {
+ parcs++;
+ if(box.x1 > parcs->x) box.x1 = parcs->x;
+ if(box.x2 < (parcs->x + parcs->width))
+ box.x2 = parcs->x + parcs->width;
+ if(box.y1 > parcs->y) box.y1 = parcs->y;
+ if(box.y2 < (parcs->y + parcs->height))
+ box.y2 = parcs->y + parcs->height;
+ }
+
+ TRIM_AND_TRANSLATE_BOX(box, pDraw, pGC);
+ if(BOX_NOT_EMPTY(box))
+ shadowDamageBox ((WindowPtr) pDraw, &box);
+ }
+
+}
+
+static int
+shadowPolyText8(
+ DrawablePtr pDraw,
+ GCPtr pGC,
+ int x,
+ int y,
+ int count,
+ char *chars
+){
+ int width;
+
+ SHADOW_GC_OP_PROLOGUE(pGC, pDraw);
+ width = (*pGC->ops->PolyText8)(pDraw, pGC, x, y, count, chars);
+ SHADOW_GC_OP_EPILOGUE(pGC, pDraw);
+
+ width -= x;
+
+ if(IS_VISIBLE(pDraw) && (width > 0)) {
+ BoxRec box;
+
+ /* ugh */
+ box.x1 = pDraw->x + x + FONTMINBOUNDS(pGC->font, leftSideBearing);
+ box.x2 = pDraw->x + x + FONTMAXBOUNDS(pGC->font, rightSideBearing);
+
+ if(count > 1) {
+ if(width > 0) box.x2 += width;
+ else box.x1 += width;
+ }
+
+ box.y1 = pDraw->y + y - FONTMAXBOUNDS(pGC->font, ascent);
+ box.y2 = pDraw->y + y + FONTMAXBOUNDS(pGC->font, descent);
+
+ TRIM_BOX(box, pGC);
+ if(BOX_NOT_EMPTY(box))
+ shadowDamageBox ((WindowPtr) pDraw, &box);
+ }
+
+ return (width + x);
+}
+
+static int
+shadowPolyText16(
+ DrawablePtr pDraw,
+ GCPtr pGC,
+ int x,
+ int y,
+ int count,
+ unsigned short *chars
+){
+ int width;
+
+ SHADOW_GC_OP_PROLOGUE(pGC, pDraw);
+ width = (*pGC->ops->PolyText16)(pDraw, pGC, x, y, count, chars);
+ SHADOW_GC_OP_EPILOGUE(pGC, pDraw);
+
+ width -= x;
+
+ if(IS_VISIBLE(pDraw) && (width > 0)) {
+ BoxRec box;
+
+ /* ugh */
+ box.x1 = pDraw->x + x + FONTMINBOUNDS(pGC->font, leftSideBearing);
+ box.x2 = pDraw->x + x + FONTMAXBOUNDS(pGC->font, rightSideBearing);
+
+ if(count > 1) {
+ if(width > 0) box.x2 += width;
+ else box.x1 += width;
+ }
+
+ box.y1 = pDraw->y + y - FONTMAXBOUNDS(pGC->font, ascent);
+ box.y2 = pDraw->y + y + FONTMAXBOUNDS(pGC->font, descent);
+
+ TRIM_BOX(box, pGC);
+ if(BOX_NOT_EMPTY(box))
+ shadowDamageBox ((WindowPtr) pDraw, &box);
+ }
+
+ return (width + x);
+}
+
+static void
+shadowImageText8(
+ DrawablePtr pDraw,
+ GCPtr pGC,
+ int x,
+ int y,
+ int count,
+ char *chars
+){
+ SHADOW_GC_OP_PROLOGUE(pGC, pDraw);
+ (*pGC->ops->ImageText8)(pDraw, pGC, x, y, count, chars);
+ SHADOW_GC_OP_EPILOGUE(pGC, pDraw);
+
+ if(IS_VISIBLE(pDraw) && count) {
+ int top, bot, Min, Max;
+ BoxRec box;
+
+ top = max(FONTMAXBOUNDS(pGC->font, ascent), FONTASCENT(pGC->font));
+ bot = max(FONTMAXBOUNDS(pGC->font, descent), FONTDESCENT(pGC->font));
+
+ Min = count * FONTMINBOUNDS(pGC->font, characterWidth);
+ if(Min > 0) Min = 0;
+ Max = count * FONTMAXBOUNDS(pGC->font, characterWidth);
+ if(Max < 0) Max = 0;
+
+ /* ugh */
+ box.x1 = pDraw->x + x + Min +
+ FONTMINBOUNDS(pGC->font, leftSideBearing);
+ box.x2 = pDraw->x + x + Max +
+ FONTMAXBOUNDS(pGC->font, rightSideBearing);
+
+ box.y1 = pDraw->y + y - top;
+ box.y2 = pDraw->y + y + bot;
+
+ TRIM_BOX(box, pGC);
+ if(BOX_NOT_EMPTY(box))
+ shadowDamageBox ((WindowPtr) pDraw, &box);
+ }
+}
+static void
+shadowImageText16(
+ DrawablePtr pDraw,
+ GCPtr pGC,
+ int x,
+ int y,
+ int count,
+ unsigned short *chars
+){
+ SHADOW_GC_OP_PROLOGUE(pGC, pDraw);
+ (*pGC->ops->ImageText16)(pDraw, pGC, x, y, count, chars);
+ SHADOW_GC_OP_EPILOGUE(pGC, pDraw);
+
+ if(IS_VISIBLE(pDraw) && count) {
+ int top, bot, Min, Max;
+ BoxRec box;
+
+ top = max(FONTMAXBOUNDS(pGC->font, ascent), FONTASCENT(pGC->font));
+ bot = max(FONTMAXBOUNDS(pGC->font, descent), FONTDESCENT(pGC->font));
+
+ Min = count * FONTMINBOUNDS(pGC->font, characterWidth);
+ if(Min > 0) Min = 0;
+ Max = count * FONTMAXBOUNDS(pGC->font, characterWidth);
+ if(Max < 0) Max = 0;
+
+ /* ugh */
+ box.x1 = pDraw->x + x + Min +
+ FONTMINBOUNDS(pGC->font, leftSideBearing);
+ box.x2 = pDraw->x + x + Max +
+ FONTMAXBOUNDS(pGC->font, rightSideBearing);
+
+ box.y1 = pDraw->y + y - top;
+ box.y2 = pDraw->y + y + bot;
+
+ TRIM_BOX(box, pGC);
+ if(BOX_NOT_EMPTY(box))
+ shadowDamageBox ((WindowPtr) pDraw, &box);
+ }
+}
+
+
+static void
+shadowImageGlyphBlt(
+ DrawablePtr pDraw,
+ GCPtr pGC,
+ int x, int y,
+ unsigned int nglyph,
+ CharInfoPtr *ppci,
+ pointer pglyphBase
+){
+ SHADOW_GC_OP_PROLOGUE(pGC, pDraw);
+ (*pGC->ops->ImageGlyphBlt)(pDraw, pGC, x, y, nglyph,
+ ppci, pglyphBase);
+ SHADOW_GC_OP_EPILOGUE(pGC, pDraw);
+
+ if(IS_VISIBLE(pDraw) && nglyph) {
+ int top, bot, width = 0;
+ BoxRec box;
+
+ top = max(FONTMAXBOUNDS(pGC->font, ascent), FONTASCENT(pGC->font));
+ bot = max(FONTMAXBOUNDS(pGC->font, descent), FONTDESCENT(pGC->font));
+
+ box.x1 = ppci[0]->metrics.leftSideBearing;
+ if(box.x1 > 0) box.x1 = 0;
+ box.x2 = ppci[nglyph - 1]->metrics.rightSideBearing -
+ ppci[nglyph - 1]->metrics.characterWidth;
+ if(box.x2 < 0) box.x2 = 0;
+
+ box.x2 += pDraw->x + x;
+ box.x1 += pDraw->x + x;
+
+ while(nglyph--) {
+ width += (*ppci)->metrics.characterWidth;
+ ppci++;
+ }
+
+ if(width > 0)
+ box.x2 += width;
+ else
+ box.x1 += width;
+
+ box.y1 = pDraw->y + y - top;
+ box.y2 = pDraw->y + y + bot;
+
+ TRIM_BOX(box, pGC);
+ if(BOX_NOT_EMPTY(box))
+ shadowDamageBox ((WindowPtr) pDraw, &box);
+ }
+}
+
+static void
+shadowPolyGlyphBlt(
+ DrawablePtr pDraw,
+ GCPtr pGC,
+ int x, int y,
+ unsigned int nglyph,
+ CharInfoPtr *ppci,
+ pointer pglyphBase
+){
+ SHADOW_GC_OP_PROLOGUE(pGC, pDraw);
+ (*pGC->ops->PolyGlyphBlt)(pDraw, pGC, x, y, nglyph,
+ ppci, pglyphBase);
+ SHADOW_GC_OP_EPILOGUE(pGC, pDraw);
+
+ if(IS_VISIBLE(pDraw) && nglyph) {
+ BoxRec box;
+
+ /* ugh */
+ box.x1 = pDraw->x + x + ppci[0]->metrics.leftSideBearing;
+ box.x2 = pDraw->x + x + ppci[nglyph - 1]->metrics.rightSideBearing;
+
+ if(nglyph > 1) {
+ int width = 0;
+
+ while(--nglyph) {
+ width += (*ppci)->metrics.characterWidth;
+ ppci++;
+ }
+
+ if(width > 0) box.x2 += width;
+ else box.x1 += width;
+ }
+
+ box.y1 = pDraw->y + y - FONTMAXBOUNDS(pGC->font, ascent);
+ box.y2 = pDraw->y + y + FONTMAXBOUNDS(pGC->font, descent);
+
+ TRIM_BOX(box, pGC);
+ if(BOX_NOT_EMPTY(box))
+ shadowDamageBox ((WindowPtr) pDraw, &box);
+ }
+}
+
+static void
+shadowPushPixels(
+ GCPtr pGC,
+ PixmapPtr pBitMap,
+ DrawablePtr pDraw,
+ int dx, int dy, int xOrg, int yOrg
+){
+ SHADOW_GC_OP_PROLOGUE(pGC, pDraw);
+ (*pGC->ops->PushPixels)(pGC, pBitMap, pDraw, dx, dy, xOrg, yOrg);
+ SHADOW_GC_OP_EPILOGUE(pGC, pDraw);
+
+ if(IS_VISIBLE(pDraw)) {
+ BoxRec box;
+
+ box.x1 = xOrg + pDraw->x;
+ box.x2 = box.x1 + dx;
+ box.y1 = yOrg + pDraw->y;
+ box.y2 = box.y1 + dy;
+
+ TRIM_BOX(box, pGC);
+ if(BOX_NOT_EMPTY(box))
+ shadowDamageBox ((WindowPtr) pDraw, &box);
+ }
+}
+
+
+static void
+shadowPaintWindow(
+ WindowPtr pWindow,
+ RegionPtr prgn,
+ int what
+){
+ ScreenPtr pScreen = pWindow->drawable.pScreen;
+ shadowScrPriv(pScreen);
+
+ if(what == PW_BACKGROUND) {
+ unwrap (pScrPriv, pScreen, PaintWindowBackground);
+ (*pScreen->PaintWindowBackground) (pWindow, prgn, what);
+ wrap (pScrPriv, pScreen, PaintWindowBackground, shadowPaintWindow);
+ } else {
+ unwrap (pScrPriv, pScreen, PaintWindowBorder);
+ (*pScreen->PaintWindowBorder) (pWindow, prgn, what);
+ wrap (pScrPriv, pScreen, PaintWindowBorder, shadowPaintWindow);
+ }
+ shadowDamageRegion (pWindow, prgn);
+}
+
+
+static void
+shadowCopyWindow(
+ WindowPtr pWindow,
+ DDXPointRec ptOldOrg,
+ RegionPtr prgn
+){
+ ScreenPtr pScreen = pWindow->drawable.pScreen;
+ shadowScrPriv(pScreen);
+
+ unwrap (pScrPriv, pScreen, CopyWindow);
+ (*pScreen->CopyWindow) (pWindow, ptOldOrg, prgn);
+ wrap (pScrPriv, pScreen, CopyWindow, shadowCopyWindow);
+ shadowDamageRegion (pWindow, prgn);
+}
+
+GCOps shadowGCOps = {
+ shadowFillSpans, shadowSetSpans,
+ shadowPutImage, shadowCopyArea,
+ shadowCopyPlane, shadowPolyPoint,
+ shadowPolylines, shadowPolySegment,
+ shadowPolyRectangle, shadowPolyArc,
+ shadowFillPolygon, shadowPolyFillRect,
+ shadowPolyFillArc, shadowPolyText8,
+ shadowPolyText16, shadowImageText8,
+ shadowImageText16, shadowImageGlyphBlt,
+ shadowPolyGlyphBlt, shadowPushPixels,
+#ifdef NEED_LINEHELPER
+ NULL,
+#endif
+ {NULL} /* devPrivate */
+};
+
+static void
+shadowGetImage (DrawablePtr pDrawable,
+ int sx,
+ int sy,
+ int w,
+ int h,
+ unsigned int format,
+ unsigned long planeMask,
+ char * pdstLine)
+{
+ ScreenPtr pScreen = pDrawable->pScreen;
+ shadowScrPriv(pScreen);
+
+ /* Many apps use GetImage to sync with the visable frame buffer */
+ if (pDrawable->type == DRAWABLE_WINDOW)
+ shadowRedisplay (pScreen);
+ unwrap (pScrPriv, pScreen, GetImage);
+ (*pScreen->GetImage) (pDrawable, sx, sy, w, h, format, planeMask, pdstLine);
+ wrap (pScrPriv, pScreen, GetImage, shadowGetImage);
+}
+
+static void
+shadowRestoreAreas (PixmapPtr pPixmap,
+ RegionPtr prgn,
+ int xorg,
+ int yorg,
+ WindowPtr pWin)
+{
+ ScreenPtr pScreen = pWin->drawable.pScreen;
+ shadowScrPriv(pScreen);
+
+ unwrap (pScrPriv, pScreen, BackingStoreFuncs.RestoreAreas);
+ (*pScreen->BackingStoreFuncs.RestoreAreas) (pPixmap, prgn,
+ xorg, yorg, pWin);
+ wrap (pScrPriv, pScreen, BackingStoreFuncs.RestoreAreas,
+ shadowRestoreAreas);
+ shadowDamageRegion (pWin, prgn);
+}
+
+static Bool
+shadowCloseScreen (int i, ScreenPtr pScreen)
+{
+ shadowScrPriv(pScreen);
+
+ unwrap (pScrPriv, pScreen, CreateGC);
+ unwrap (pScrPriv, pScreen, PaintWindowBackground);
+ unwrap (pScrPriv, pScreen, PaintWindowBorder);
+ unwrap (pScrPriv, pScreen, CopyWindow);
+ unwrap (pScrPriv, pScreen, CloseScreen);
+ unwrap (pScrPriv, pScreen, GetImage);
+ unwrap (pScrPriv, pScreen, BackingStoreFuncs.RestoreAreas);
+ xfree (pScrPriv);
+ return (*pScreen->CloseScreen) (i, pScreen);
+}
+
+Bool
+shadowSetup (ScreenPtr pScreen)
+{
+ shadowScrPrivPtr pScrPriv;
+#ifdef RENDER
+ PictureScreenPtr ps = GetPictureScreenIfSet(pScreen);
+#endif
+
+ if (shadowGeneration != serverGeneration)
+ {
+ shadowScrPrivateIndex = AllocateScreenPrivateIndex ();
+ if (shadowScrPrivateIndex == -1)
+ return FALSE;
+ shadowGCPrivateIndex = AllocateGCPrivateIndex ();
+ if (shadowGCPrivateIndex == -1)
+ return FALSE;
+ shadowGeneration = serverGeneration;
+ }
+ if (!AllocateGCPrivate (pScreen, shadowGCPrivateIndex, sizeof (shadowGCPrivRec)))
+ return FALSE;
+ pScrPriv = (shadowScrPrivPtr) xalloc (sizeof (shadowScrPrivRec));
+ if (!pScrPriv)
+ return FALSE;
+
+ if (!RegisterBlockAndWakeupHandlers (shadowBlockHandler,
+ shadowWakeupHandler,
+ (pointer) pScreen))
+ return FALSE;
+
+ wrap (pScrPriv, pScreen, CreateGC, shadowCreateGC);
+ wrap (pScrPriv, pScreen, PaintWindowBackground, shadowPaintWindow);
+ wrap (pScrPriv, pScreen, PaintWindowBorder, shadowPaintWindow);
+ wrap (pScrPriv, pScreen, CopyWindow, shadowCopyWindow);
+ wrap (pScrPriv, pScreen, CloseScreen, shadowCloseScreen);
+ wrap (pScrPriv, pScreen, GetImage, shadowGetImage);
+ wrap (pScrPriv, pScreen, BackingStoreFuncs.RestoreAreas,
+ shadowRestoreAreas);
+#ifdef RENDER
+ if (ps) {
+ wrap (pScrPriv, ps, Glyphs, shadowGlyphs);
+ wrap (pScrPriv, ps, Composite, shadowComposite);
+ }
+#endif
+ pScrPriv->pBuf = 0;
+
+ pScreen->devPrivates[shadowScrPrivateIndex].ptr = (pointer) pScrPriv;
+ return TRUE;
+}
+
+Bool
+shadowAdd (ScreenPtr pScreen,
+ PixmapPtr pPixmap,
+ ShadowUpdateProc update,
+ ShadowWindowProc window,
+ int randr,
+ void *closure)
+{
+ shadowScrPriv(pScreen);
+ shadowBufPtr pBuf;
+
+ pBuf = (shadowBufPtr) xalloc (sizeof (shadowBufRec));
+ if (!pBuf)
+ return FALSE;
+ /*
+ * Map simple rotation values to bitmasks; fortunately,
+ * these are all unique
+ */
+ switch (randr) {
+ case 0:
+ randr = SHADOW_ROTATE_0;
+ break;
+ case 90:
+ randr = SHADOW_ROTATE_90;
+ break;
+ case 180:
+ randr = SHADOW_ROTATE_180;
+ break;
+ case 270:
+ randr = SHADOW_ROTATE_270;
+ break;
+ }
+ pBuf->pPixmap = pPixmap;
+ pBuf->update = update;
+ pBuf->window = window;
+ REGION_INIT (pScreen, &pBuf->damage, NullBox, 0);
+ pBuf->pNext = pScrPriv->pBuf;
+ pBuf->randr = randr;
+ pBuf->closure = 0;
+ pScrPriv->pBuf = pBuf;
+ return TRUE;
+}
+
+void
+shadowRemove (ScreenPtr pScreen, PixmapPtr pPixmap)
+{
+ shadowScrPriv(pScreen);
+ shadowBufPtr pBuf, *pPrev;
+
+ for (pPrev = &pScrPriv->pBuf; (pBuf = *pPrev); pPrev = &pBuf->pNext)
+ if (pBuf->pPixmap == pPixmap)
+ {
+ REGION_UNINIT (pScreen, &pBuf->damage);
+ *pPrev = pBuf->pNext;
+ xfree (pBuf);
+ break;
+ }
+}
+
+shadowBufPtr
+shadowFindBuf (WindowPtr pWindow)
+{
+ ScreenPtr pScreen = pWindow->drawable.pScreen;
+ shadowScrPriv(pScreen);
+ shadowBufPtr pBuf, *pPrev;
+ PixmapPtr pPixmap = (*pScreen->GetWindowPixmap) (pWindow);
+
+ for (pPrev = &pScrPriv->pBuf; (pBuf = *pPrev); pPrev = &pBuf->pNext)
+ {
+ if (!pBuf->pPixmap)
+ pBuf->pPixmap = (*pScreen->GetScreenPixmap) (pScreen);
+ if (pBuf->pPixmap == pPixmap)
+ {
+ /*
+ * Reorder so this one is first next time
+ */
+ if (pPrev != &pScrPriv->pBuf)
+ {
+ *pPrev = pBuf->pNext;
+ pBuf->pNext = pScrPriv->pBuf;
+ pScrPriv->pBuf = pBuf;
+ }
+ return pBuf;
+ }
+ }
+ return 0;
+}
+
+Bool
+shadowInit (ScreenPtr pScreen, ShadowUpdateProc update, ShadowWindowProc window)
+{
+ if (!shadowSetup (pScreen))
+ return FALSE;
+
+ if (!shadowAdd (pScreen, 0, update, window, SHADOW_ROTATE_0, 0))
+ return FALSE;
+
+ return TRUE;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-24 12:50:02 +0000