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xserver/miext/shadow/shadow.c

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/*
* $XFree86: xc/programs/Xserver/miext/shadow/shadow.c,v 1.14tsi 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++;
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->FillSpans)(pDraw, pGC, nInit, pptInit, pwidthInit, fSorted);
if(!pGC->miTranslate) {
TRANSLATE_BOX(box, pDraw);
}
TRIM_BOX(box, 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);
if(!pGC->miTranslate) {
TRANSLATE_BOX(box, pDraw);
}
TRIM_BOX(box, 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;
box.y1 = yOrg;
if(!pGC->miTranslate) {
box.x1 += pDraw->x;
box.y1 += pDraw->y;
}
box.x2 = box.x1 + dx;
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_NULL(pScreen, &pBuf->damage);
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;
}
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